Bale Severance Mechanism for a Continuous Round Baler

Abstract

A continuous round baler forms a cylindrically-shaped bale by spiral, coiled layers created by a conical portion of a bale-forming chamber and protruded upwardly from a cylindrical portion of the bale-forming chamber. The bale is circumferentially supported by netting applied to the bale in the cylindrical portion. A rotary feed table receives crop from the field and feeds the crop into the conical portion. The bale forming process can be interrupted if an insufficient volume of crop is collected on the rotary feed table. The netting material is provided on short rolls to facilitate loading onto the machine. A cutoff mechanism is coupled to the growth of the bale from the cylindrical portion to sever the bale at a predetermined length with end surfaces that are perpendicular to the axis of the bale. A bale density mechanism supports the distal end of the bale as the bale protrudes upwardly.

Claims

1-20. (canceled)

21. A bale severance mechanism for a continuous round baler movable in a forward direction of travel and producing a cylindrical bale extending axially in a rearward direction with respect to said direction of travel, comprising: at least one knife pivotally mounted on said continuous round baler and positioned to engage said axially extending cylindrical bale along a circumferential surface thereof; and an actuator operatively connected to said at least one knife to drive said at least one knife into said axially extending cylindrical bale to sever a formed cylindrical bale from said axially extending cylindrical bale.

22. The bale severance mechanism of claim 21 wherein a rear support member engages a rearwardly distal end of said axially extending cylindrical bale to assist in severing said formed cylindrical bale from said axially extending cylindrical bale, and said rear support member remains engaged with said rearwardly distal end of said axially extending cylindrical bale until said at least one knife has completed the severing of said formed cylindrical bale from said axially extending cylindrical bale.

23. The bale severance mechanism of claim 22 wherein said axially extending cylindrical bale is rotated about the axis of said axially formed cylindrical bale, said rear support member including a plate engaged with said rearwardly distal end of said axially extending cylindrical bale such that said plate is rotatable with said axially extending cylindrical bale.

24. The bale severance mechanism of claim 23 wherein said plate is mounted on a support beam that telescopes as said axially extending cylindrical bale protrudes from said continuous round baler to permit said rear support member to remain engaged with said rearwardly distal end of said axially extending cylindrical bale during formation thereof.

25. The bale severance mechanism of claim 24 wherein said telescoping support beam is operatively associated with a resistance device that causes said rear support member to press against said rearwardly distal end of said axially extending cylindrical bale in a manner to control density thereof.

26. The bale severance mechanism of claim 24 wherein said support beam retracts into said frame after said formed cylindrical bale is severed from said axially extending cylindrical bale by said at least one knife to reengage said plate with the newly formed rearwardly distal end of said axially extending cylindrical bale.

27. The bale severance mechanism of claim 21 wherein said at least one knife cuts through said axially extending cylindrical bale as said axially extending cylindrical bale rotates about the axis of said axially extending cylindrical bale.

28. The bale severance mechanism of claim 21 wherein said at least one knife moves axially with said axially extending cylindrical bale as said at least one knife engages the circumference of said axially extending cylindrical bale to provide a line of separation for said formed cylindrical bale that creates a proximal end for said formed cylindrical bale that is parallel to said rearwardly distal end thereof.

29. The bale severance mechanism of claim 21 wherein said at least one knife includes multiple knives mounted on said continuous round baler along the circumferential sides of said axially extending cylindrical bale.

30. A method of severing a formed cylindrical bale from an axially extending cylindrical bale being protruded from a continuous round baler in a rearward direction relative to a direction of travel of said continuous round baler, comprising the steps of: engaging a circumferential side of said axially extending cylindrical bale with at least one knife that is powered to progress into said axially extending cylindrical bale until a formed cylindrical bale is severed from said axially formed cylindrical bale by said at least one knife.

31. The method of claim 30 further comprising the step of: retracting said at least one knife to home position spaced outwardly of said axially extending cylindrical bale after said formed cylindrical bale has been severed from said axially extending cylindrical bale.

32. The method of claim 31 further comprising the step of: moving said at least one knife with said axially extending cylindrical bale as said at least one knife is engaging said axially extending cylindrical bale such that said formed cylindrical bale has proximal and distal ends that are generally parallel and perpendicular to the axis of said formed cylindrical bale.

33. The method of claim 32 wherein said axially extending cylindrical bale continues to protrude in an increasing manner during said moving step.

34. The method of claim 30 wherein said at least one knife is powered into engagement with said axially extending cylindrical bale by a hydraulic cylinder.

35. The method of claim 30 wherein said round baler includes a bale support member engaged with said distal end of said axially extending cylindrical bale while said at least one knife is engaging said axially extending cylindrical bale until said formed cylindrical bale has been severed therefrom.

36. The method of claim 30 wherein said at least one knife includes at least two knives respectively engaging said axially extending cylindrical bale on opposing circumferential sides thereof.

37. A round baler axially forming a cylinder of crop material protruding from said round baler into a rearward direction relative to a normal direction of travel of said round baler, comprising: a frame adapted for movement across a field; a crop pick-up mechanism supported from said frame to collect crop material from said field to form said cylinder of crop material; a conical bale forming chamber supported on said frame to receive said crop material to start forming said cylinder of crop material; a table rotatably mounted on said frame to receive crop material from said crop pick-up mechanism and deliver said crop material to said conical bale forming chamber; a cylindrical bale forming chamber supported on said frame in communication with said conical bale forming chamber to receive said cylinder of crop material from said conical bale forming chamber and protrude said cylinder of crop material rearwardly therefrom; and a bale severance mechanism supported from said frame rearwardly of said cylindrical bale forming chamber to engage the circumference of said cylinder of crop material and sever a formed cylindrical bale therefrom for discharge from said round baler.

38. The round baler of claim 37 wherein said bale severance mechanism is supported on said frame in a manner to move with said cylinder of crop material while said cylinder of crop material continues to protrude increasingly in a rearward direction and while said bale severance mechanism is severing said formed cylindrical bale from said cylinder of crop material.

39. The round baler of claim 38 wherein said round baler further comprises: a bale support member supported from said frame to be engaged with a distal end of said cylinder of crop material as said cylinder of crop material protrudes increasingly from said cylindrical bale forming chamber, said bale support member being movable with said distal end of said cylinder of crop material.

40. The round baler of claim 39 wherein said bale support member engages said distal end of said cylinder of crop material while said bale severance mechanism severs said formed cylindrical bale from said cylinder of crop material, said bale support member disengaging said formed cylindrical bale as said formed cylindrical bale is discharged to said field behind said round baler.

41. The round baler of claim 40 wherein said bale support member is reengaged with said distal end of said cylinder of crop material after said formed cylindrical bale has been discharged from said round baler.

42. The round baler of claim 37 wherein said bale severance mechanism comprises at least two knives pivotally supported from said frame to engage opposing circumferential sides of said cylinder of crop material to sever said formed cylindrical bale from said cylinder of crop material.

43. The round baler of claim 42 wherein said at least two knives are powered in pivotal movement to engage opposing circumferential sides of said cylinder of crop material by respective hydraulic cylinders and to return to a home position after said formed cylindrical bale has been severed from said cylinder of crop material.

44. The round baler of claim 39 further comprising a rearwardly extending support member on which said bale support member is mounted, said rearwardly extending support member moving with the protrusion of said cylinder of crop material from said cylindrical bale forming chamber.

45. The round baler of claim 44 wherein said bale support member is rotatably mounted on said rearwardly extending support member so as to rotate with said cylinder of crop material protruding from said cylindrical bale forming chamber.

46. The round baler of claim 44 wherein said bale severance mechanism is selectively engagable with said rearwardly extending support member to effect rearward movement thereof when engaged with said cylinder of crop material.

47. A continuous round baler moveable in a forward direction of travel comprising: a bale chamber oriented longitudinally with respect to the direction of travel and having a forward conical portion and a contiguous rearward cylindrical portion, the bale chamber being configured to rotate crop material therein, and to form and protrude a rotating cylinder of crop material from the cylindrical portion of the bale chamber, a density control mechanism comprising a support plate engageable with a distal end of the protruding cylinder of crop material, the support plate being operable to advance with the growth of the cylinder of crop material protruding from the cylindrical portion of the bale forming chamber, and being operatively urged towards the cylindrical portion of the bale forming chamber for controlling the density of the protruding cylinder of crop material.

48. The continuous round baler of claim 47 wherein the support plate is rotatably mounted and is rotatable with the protruding cylinder of crop material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The advantages of this invention will become apparent upon consideration of the following detailed disclosure of the invention, especially when taken in conjunction with the accompanying drawings wherein:

[0062] FIG. 1 is left front perspective view of the continuous round baler in the initial configuration;

[0063] FIG. 2 is a right front perspective view of the continuous round baler shown in FIG. 1;

[0064] FIG. 3 is a left rear perspective view of the continuous round baler shown in FIG. 1;

[0065] FIG. 4 is a rear perspective view of the continuous round baler with components broken away to better seen the transfer table;

[0066] FIG. 5 is left front perspective view similar to that of FIG. 1, but showing the extension of the rear support plate corresponding to a growth of the formed round bale;

[0067] FIG. 6 is an upper perspective view of the continuous round baler with the rear support plate displaced rearwardly to permit a view of the rollers internal of the bale chamber;

[0068] FIG. 6A is a schematic cross-sectional view taken along the vertical longitudinal centerline of the machine, showing a cylindrical bale protruding out of the cylindrical portion of the bale chamber while a new bale is being formed in the conical bale chamber;

[0069] FIG. 7 is an upper right, rear perspective view of the continuous round baler with components broken away to view the transfer table and the movement of the crop material shown in broken lines;

[0070] FIG. 7A is an upper rear perspective view of the continuous round baler with the rear support plate moved rearwardly to display the interior of the bale chamber, the opening in the conical portion of the bale chamber being depicted;

[0071] FIG. 8 is an upper perspective view similar to that of FIG. 6, but showing the beginning of the formation of a round bale extending rearwardly from the bale chamber, the rear support plate being displaced rearwardly to permit a view of the formed round bale;

[0072] FIG. 9 is an upper perspective view similar to that of FIG. 8, but showing a formed round bale extending rearwardly and being supported between the bale chamber and the rear support plate with the bale severance device being ready for actuation;

[0073] FIG. 10 is an upper perspective view similar to that of FIG. 9 but with the bale severance device partially through the cutting cycle;

[0074] FIG. 11 is an upper perspective view similar to that of FIG. 10 but with the bale severance device completing the cutting cycle;

[0075] FIG. 12 is an upper perspective view similar to that of FIG. 11 but with the severed round bale falling from the rear support plate to the ground;

[0076] FIG. 13 is an upper perspective view similar to that of FIG. 12 but with the rear support plate re-positioned to support the rearward end of the round bale being formed;

[0077] FIG. 14 is a right front perspective view of the continuous round baler showing the folded net wrapping apparatus mounted on the frame of the continuous round baler supporting the rollers of the bale chamber;

[0078] FIG. 15 is an enlarged partial cross-sectional view of the folded net wrapping apparatus with the path of the net passing between rollers for engagement with the formed round bale;

[0079] FIG. 16 is a left rear perspective view of the continuous round baler shown in FIG. 14;

[0080] FIG. 17 is a schematic perspective view of the continuous round baler with an alternative net wrapping apparatus utilizing small width rolls of netting material as the netting supply source;

[0081] FIG. 18 is a partial side elevational view of the alternative net wrapping apparatus;

[0082] FIG. 19 is an enlarged partial perspective view of the interlocking mechanism tying the respective netting rolls together;

[0083] FIG. 20 is a detail perspective view of a portion of the center mounting tube for the netting rolls;

[0084] FIG. 21 is a detail view of the center mounting tube with the tail end of the netting material placed through the access opening and knotted;

[0085] FIG. 22 is a perspective detail view of one of the netting rolls with a central portion thereof broken away to view the center mounting tube;

[0086] FIG. 23 is a schematic perspective view of the continuous round baler with the alternative net wrapping apparatus showing the exhaustion of the first roll of netting with the knotted tail end of the netting still positioned within the center mounting tube;

[0087] FIG. 24 is a partial side elevational view of the alternative net wrapping apparatus showing the exhaustion of the first roll of netting material with the knotted tail end of the netting roll positioned within the center mounting tube;

[0088] FIG. 25 is a schematic perspective view of the continuous round baler with the alternative net wrapping apparatus showing the exhaustion of the first roll of netting with the knotted tail end approaching the interlocking mechanism to initiate the utilization of the second roll of netting material;

[0089] FIG. 26 is a partial side elevational view of the alternative net wrapping apparatus showing the exhaustion of the first roll of netting with the knotted tail end approaching the interlocking mechanism to initiate the utilization of the second roll of netting material;

[0090] FIG. 27 is a schematic perspective view of the continuous round baler with the alternative net wrapping apparatus showing the engagement of the second roll of netting material with the first segment of the interlocking mechanism rotated into an inoperative position;

[0091] FIG. 28 is a partial side elevational view of the alternative net wrapping apparatus showing the engagement of the second roll of netting material with the first segment of the interlocking mechanism rotated into an inoperative position;

[0092] FIG. 29 is a schematic perspective view of the continuous round baler with the alternative net wrapping apparatus utilizing the second roll of netting material;

[0093] FIG. 30 is a partial side elevational view of the alternative net wrapping apparatus utilizing the second roll of netting material;

[0094] FIG. 31 is a partial schematic side elevational view of the continuous round baler having an alternative bale slicing mechanism, some of the conical rolls of the bale forming chamber being removed for purposes of clarity, the bale slicing mechanism being located at an initial position at the bottom of the conical bale formation chamber;

[0095] FIG. 31A is a partial schematic side elevational view of the continuous round baler as shown in FIG. 31 but used in conjunction with FIG. 33 to depict with dashed lines the corresponding location of pivots;

[0096] FIG. 32 is a bottom plan view of the continuous round baler shown in FIG. 31, dashed lines indicating the corresponding location of pivots with respect to FIGS. 31 and 32;

[0097] FIG. 33 is a top plan view of the continuous round baler shown in FIG. 31 with some of the conical and cylindrical rolls being removed for purposes of clarity;

[0098] FIG. 34 is a partial side elevational view of the continuous round baler as shown in FIG. 31 showing the operation of the bale slicing mechanism beginning at the initial position, the initial conical wedge of crop material at the beginning of the operation of the bale slicing mechanism being highlighted;

[0099] FIG. 35 is a partial side elevational view of the continuous round baler with the bale slicing mechanism progressed through approximately half of the length of the bale, the initial conical wedge of crop material being highlighted;

[0100] FIG. 36 is a partial side elevational view of the continuous round baler with the bale slicing mechanism progressed to the end of the bale slicing operation, the location of the blade being at the bottom of the array of cylindrical rollers, the initial conical wedge of crop material being highlighted;

[0101] FIG. 37 is a partial side elevational view of the continuous round baler with the bale slicing mechanism following the formation of the cylindrical bale with the blade being above the array of cylindrical rollers;

[0102] FIG. 38 is a partial side elevational view of the continuous round baler with the severed cylindrical bale being discharged from the baler onto the ground, the bale slicing mechanism being withdrawn for repositioning;

[0103] FIG. 39 is a side elevational view of the continuous round baler with the bale slicing mechanism being re-positioned to insert the blade at the bottom of the conical bale forming chamber to start severance of another cylindrical bale at the formation thereof;

[0104] FIG. 40 is a partial top plan view of the continuous round baler with a second alternative bale severance mechanism depicted, the movement of the bale slicing knives being shown in phantom;

[0105] FIG. 41 is partial side elevational view of the continuous round baler shown in FIG. 40;

[0106] FIG. 42 is a schematic perspective view of the continuous round baler having a bale density spear mounted in the center of the conical bale formation chamber; and

[0107] FIG. 43 is a schematic vertical cross sectional view through the center of the round baler showing the location of the bale density spear during the formation of the cylindrical bale.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0108] Referring now to drawings, a continuous round baler incorporating the principles of the instant invention can best be seen. Any references to left, right, front and rear are determined by standing at the rear of the machine facing a prime mover, such as a tractor, that is connected to pull the continuous round baler in a forward direction behind the prime mover. The continuous round baler 10 includes a wheeled frame 12 having a pair of laterally spaced ground engaging wheels 13 and a forwardly extending draft tongue 14 that is connectable to a prime mover (not shown), such as a tractor, that provides a source of rotational power and a source of hydraulic power in a conventional manner.

[0109] The frame 12 further includes a circular roller support member 15 to rotatably support the rollers 28 in the bale chamber 20 as will be described in greater detail below. The draft tongue 14 connects to the roller support member 15 and provides a hollow receiver for the support beam 32 supporting the rear support plate 30 as will also be described in greater detail below. The frame 12 supports a conventional crop pick-up mechanism 17 extending transversely to create the operative forward edge of the machine 10 underneath the draft tongue 14. The purpose of the crop pick-up mechanism 17 is to elevate severed crop material lying on the surface of the ground and feed the crop material rearwardly into the machine 10.

[0110] Receiving the crop material from the crop pick-up mechanism 17 is a transfer table 18 which has the function of transferring the crop material received from the pick-up mechanism 17 to one side of the transfer table 18. Although the transfer table 18 could have a rotary mechanism (not shown) associated with the transfer table 18 to convey the crop material received from the pick-up mechanism 17, the transfer table 18 could also be simply rotatably driven to move crop material to one side of the table 18 so that the crop material can be fed into the bale chamber 20 as depicted in FIG. 7 and will be described in greater detail below. The transfer table 18 can be operated to move crop in either direction, depending on the rotation of the rollers 25, 28 within the bale chamber, but preferably, the transfer table 18 will be operable to convey the crop material to the left side of the table 18 and upwardly into the bale chamber 20 through an infeed opening 23 between two selected conical rollers 25 as depicted in FIG. 7A. The transfer table 18 includes a curved barrier 19 that serves as a fence to retain the crop material on the transfer table 18 as the crop material is being moved to the side of the table 18 and fed into the bale chamber 20 upwardly along the ramp 18a and into the infeed opening 23.

[0111] The bale chamber 20 starts with a conical portion 22 adjacent to the transfer table 18. The conical portion 22 of the bale chamber 20 is formed by tapered, conical rollers 25 that are mounted for rotation by the frame 12 at a forward end thereof and by the circular roller support member 15 at the rearward end thereof. The tapered rollers 25 are arranged to converge at the forward frame 12 and to be spaced in a circular array at the diameter of the circular roller support member 15. Thus, the conical portion 22 of the bale chamber 20 is oriented generally vertically. As is best seen in FIGS. 1, 2, 5 and 6, the circular roller support member 15 is tipped from horizontal at an acute angle, preferably in the range of 20 to 60 degrees, which in turn orients the conical portion 22 and the cylindrical portion 27 of the bale chamber 20 at about 20-60 degrees from vertical, preferably between 25 to 35 degrees.

[0112] The circular roller support member 15 rotatably supports the cylindrical rollers 28 in a circular array with a central discharge opening 29 that is oriented generally vertically, as defined above. One skilled in the art will recognize that a truly vertical orientation of the discharge opening 29, as well as the bale chamber 20 could be utilized except that the deflection from being truly vertical by the acute angle facilitates the discharge of a severed round bale, as will be described in greater detail below.

[0113] The bale chamber 20 also includes a circular portion 27 formed by the short cylindrical rollers 28 that are rotatably housed within the circular roller support member 15. The conical rollers 25 and the cylindrical rollers 28 have a one to one relationship and are preferably driven together, such as via a drive belt or chain 36 shown in FIGS. 6 and 14. A drive mechanism 35, which will be described in greater detail below, interconnects the wide end of the conical roller 25 and the corresponding adjacent end of the cylindrical roller 28 to provide a driven rotation to both sets of rollers 25, 28. Therefore, crop material received into the conical portion 22 of the bale chamber 20 is rotated into a compact conically shaped mass that continues to build as crop material is fed into the conical portion 22 of the bale chamber 20. Then, as more crop material is added into the bale chamber 20, the conically shaped mass within the conical portion 22 has a diameter at the rearward end thereof that is the same diameter as the cylindrical portion 27 of the bale chamber 20. Then, as additional crop material is added into the conical portion 22, the cylindrical bale protrudes upwardly and rearwardly from the cylindrical portion 27 against the rear support plate 30, as will be described in greater detail below.

[0114] One skilled in the art will recognize that the drive belt or chain 36 can be rotatably driven from the prime mover either mechanically or hydraulically. Mechanically, the prime mover (not shown) will have a power takeoff that can deliver rotational power to a gearbox (not shown) that can be operatively connected to the drive belt or chain 36 for driving the rollers 25, 28. Alternatively, the power takeoff can drive a hydraulic system to drive the belt or chain 36. Similarly, the rotation of the transfer table 18, or the rotational mechanism associated therewith, can be operatively driven from the mechanical or hydraulic power provided by the prime mover.

[0115] The drive mechanism 35 can include a drive belt or chain 36 positioned to wrap partially around a drive sprocket 37 mounted on the forward end of each cylindrical roller 28, as is best seen in FIG. 14. Also mounted on the forward end of each cylindrical roller 28 is a drive transfer member 38 that is rotatable with the driven rotation of the drive sprocket 37. The drive transfer member 38 is shown in FIG. 14 as being an elastomeric wheel that is sized to engage a parallel cuff formed on the inside of each corresponding conical roller 25. Such an arrangement will be operable to transfer rotation to the conical rollers 25 through friction between the elastomeric wheel and the parallel cuff. One skilled in the art will also recognize that other configurations of the drive transfer member 38, such as a pinion engagable with a corresponding rack formed on the parallel cuff, or a bevel gear set, would be operable to transfer rotational power from the drive mechanism 35 to the circular arrangement of conical rollers 25 adjacent to the cylindrical rollers 28.

[0116] One skilled in the art will also recognize that dirt and debris, such as crop material fines and dust, are prevalent in the operation of any mechanism that bales crop material. The drive mechanism 35, for the sake of shielding from dirt and debris, but also for the sake of safety, will likely be enclosed by shielding, which is not depicted in the drawings for the purposes of clarity of the component parts of the continuous round baler 10. Likewise, shielding that might be desirable for other operative components, such as the transfer table 18 and the bale severance device 40 are not shown in the drawings to permit a better view of the component parts.

[0117] One skilled in the art will recognize that the drive mechanism for the components requiring a driving power to be transmitted thereto can be provided in a variety of different mechanisms, including a gearbox (not shown) optimally positioned to drive the conical rollers 25 and the transfer table 18 and associated mechanisms. One skilled in the art will also recognize that the cylindrical rollers 28 may not have to be driven at all. With the rotation imparted to the conical bale being formed in the conical bale chamber 22 by the conical rollers 25, the bale protruding from the upper portion of the cylindrical rollers 28 may be rotated from the conical bale chamber 22 without requiring a driving power to be delivered to the cylindrical rollers 28. Accordingly, the cylindrical rollers 28 may be simply mounted from the center of the corresponding conical rollers 25 with a bearing permitting rotation thereof due to the engagement with the rotating cylindrical bale protruding from the cylindrical portion of the baler chamber 27, such as is schematically shown in FIG. 17.

[0118] The rear support plate 30 is rotatably supported at the rearward end of a support beam 32 telescopically received within the rearward end of the draft tongue 14. The telescopic movement of the support beam 32 can either be powered to correspond to the advancement of the round bale from the cylindrical portion 27 of the bale chamber 20, or be spring-loaded toward the collapsed orientation, as shown in FIGS. 1-3, so that the rear support plate 30 supports the rearward end of the formed round bale and the bale protrudes from the cylindrical portion 27 of the bale chamber 20. The rear support plate 30 could be hydraulically powered with density being controlled through a hydraulic relief valve (not shown) and the rear support plate 30 being returned to the home position hydraulically. Preferably, the rear support plate 30 will be formed with teeth 34 mounted on the bale facing side of the plate 30 so that the end of the protruding round bale will be fully engaged and supported. Alternatively, the rear support plate 30 could be formed in a cup-shape (not shown) such that the sides of the rear support plate 30 could engage the sides of the cylindrical bale around the distal end to provide additional support for the end of the bale. The rotation of the rear support plate 30 will facilitate the rotation of the protruding round bale by the rollers 28 as the bale is being formed and extending out of the bale chamber 20.

[0119] The cylindrical round baler 10 is also provided with a bale severance device 40 supported from the rearward end of the draft tongue 14. The purpose of the bale severance device 40 is to cut the continuously protruding round bale into discrete lengths such that the end result is a cylindrical bale lying on the surface of the field as any conventional round baler would have created. Preferably, the telescoping support beam 32 triggers the operation of the bale severance device 40 when the rear support plate 30 has reached a point corresponding to the desired length of the formed round bale. Also preferably the length of the formed round bale can be adjusted to a desired length for the individual operator. Then when the desired length has been attained, the bale severance device will be actuated to sever a round bale from the continuous round baler at the appropriate length.

[0120] The bale severance device 40 preferably includes a powered knife 42 that swings through an arc to sever the round bale at the desired length. Preferably, the knife 42 is carried on a collar 44 that is engagable by the telescoping support beam 32 and movable along the rearward end of the draft tongue 14 with the telescoping support beam 32 so that the knife 42, once actuated, moves rearwardly with the support beam 32 and rear support plate 30 to maintain a parallel cut as the round bale continues to protrude from the bale chamber 20. The movement of the knife 42 can be powered hydraulically from the prime mover (not shown), such as via the movement of a hydraulic cylinder (not shown).

[0121] One skilled in the art will recognize that a number of different knife 42 configurations can be utilized in the operation of the bale severance device. Instead of a single blade powered through a cutting arc, as depicted in FIGS. 9-13, the knife 42 could be a rotating blade, or a fine chain, such as a chain saw, or a pair of reciprocating blades. Furthermore, the length of the knife 42 does not have to be as long as the diameter of the formed round bale. The knife blade 42 could be slightly longer than half the diameter so that the formed round bale would have to rotate at least one revolution during the operation of the bale severance device to affect a complete severing of the bale from the round bale extrusion.

[0122] With reference to FIGS. 8-13, one skilled in the art can see the progression of the extrusion of the round bale from the bale chamber 20 and the operation of the bale severance device to form a conventional looking round bale. In FIG. 8, although the rear support member 30 would be in the same position as depicted in FIG. 13, the displaced rear support plate 30 reveals the formation of the round bale within the bale chamber 20, formed by feeding crop material from the transfer table into the conical portion 22 of the bale chamber 20 with the full diameter round bale filling the cylindrical portion 27 of the bale chamber. One skilled in the art will recognize that the placement of the rear support member 30 at the end of the cylindrical portion 27, as depicted in FIG. 13, the formation of the cylindrical bale is enhanced and facilitated as the crop material has to tightly compact in the cylindrical form protruding from the bale chamber 20.

[0123] The round bale continues to grow with the continuing addition of more crop material into the conical portion 22 and advances the extrusion of the round bale from the bale chamber 20 against the rear support plate 30. Eventually, the protruded round bale reaches a length deemed desirable by the operator, as is represented in FIG. 9, and the bale severance device 40 is actuated, preferably automatically, as opposed to being manually actuated, so that uniform bale lengths will be attained. The bale severance device 40 severs through the protruded round bale, even as the protruded bale continues to be rotated with the rollers 25, 28, as is depicted in FIGS. 10 and 11. The severed round bale then falls from the remaining protruding cylindrical bale and from the rear support plate 30, as depicted in FIG. 12, to fall to the surface of the field. After the severed round bale has been detached and discharged, the support beam 32 collapses to position the rear support plate 30 against the protruding cylindrical bale for continued support thereof during the formation of the next round bale.

[0124] The above-described operation of the continuous round baler 10 makes the wrapping of the bale with a conventional net wrapping apparatus (not shown) problematic. One resolution of the problem of applying netting material to the circumferential perimeter of the formed round bale would be to attach a net wrapping apparatus (not shown) to the support beam 32 at the rearward end thereof corresponding to the location of the rear support plate 30. Such a net wrapping apparatus would carry a conventional roll or rolls of netting material to be applied to the outer surface of the formed round bale just prior to actuating the bale severance device 40.

[0125] However, a folded net wrap apparatus 50 would provide an improved net wrapping function for the continuous round baler 10. Rather than supplying the netting material on a roll, which requires a core about which the netting material is rolled, the netting material is formed in a folded configuration that is compacted into a pre-formed shape to fit into the supply boxes 52 mounted on top of the roller support member 15 on opposing sides of the draft tongue 14 and telescopic support beam 32. The folding of the netting material can place a larger amount of netting material into a correspondingly sized box because there is no roll core required. Actually, several bundles of folded netting material can be loaded into each of the supply boxes 52 with the tail end of the leading bundle clipped or tied to the leading end of the subsequent bundle of folded netting material until the respective supply box 52 is filled with folded compressed netting material.

[0126] As is best seen in FIGS. 14-16, the netting material 55 can be fed from either one of the supply boxes 52 between two of the cylindrical rollers 28 to be placed into contact with the exterior surface of the formed round bale as the round bale is rotated and protruded within the cylindrical portion 28 of the bale chamber 20. As a result, the netting material 55 would already be applied to the periphery of the round bale as the round bale leaves the bale chamber 20. Since the round bale is both rotating and advancing linearly out of the bale chamber 20, the netting material 55 is applied in a continuous spiral manner around the outer periphery of the formed round bale. Therefore, the stability of the formed round bale between the rear support plate 30 and the bale chamber 20 is enhanced by the application of the netting material 55.

[0127] In normal or heavy crop conditions, the amount of crop material being received on the transfer table 18 is sufficient to maintain a continuous operation of the formation of the round bale within the bale chamber 20. As a result, the formed round bale should protrude from the bale chamber in an even manner so that the netting material 55 is applied in an even spiral manner around the formed round bale. However, in light crop conditions, the progress of the bale formation may not be rapid enough to apply the netting material efficiently and effectively.

[0128] Therefore, the transfer table 18 can be used as an accumulation chamber to accumulate a sufficient supply of crop material before being fed into the conical portion 22 of the bale chamber 20. In such conditions, the drive mechanism (not shown) can incorporate a drive interrupt apparatus, such as a clutch or an on/off function, so that the rollers 25, 28 will not be rotated until the transfer table 18 is ready to feed crop material into the bale chamber 20. In such situations, the transfer table 18 will continue to operate, as will the crop pick-up mechanism 17, to collect crop material and position the crop material on one side of the transfer table 18 for delivery to the bale chamber 20. A sensor (not shown), either a proximity switch or a volume or a weight sensor, will identify when an adequate amount of crop material has been collected on the transfer table 18. The triggering of the sensor will start the drive for the rollers 25, 28 and allow the feeding of the crop material into the conical portion 22. With the rotation of the rollers 28, the netting material 55 will continue to be drawn from the supply box 52 and applied to the outer periphery of the formed round bale. In this manner, the netting material 55 will not be wasted and will only be applied when the round bale is being formed within the bale chamber 20. Depending on the volume of crop material available to feed into the conical portion 22, the drive interrupt apparatus could simply slow the rotation of the rollers 25, 28, instead of stopping them completely, to provide proper feeding of the crop material into the conical portion 22.

[0129] The folded net wrap apparatus can also be utilized by conventional round balers. Instead of a roll of netting material, the supply boxes can be filled with folded netting material which would enable a larger supply of netting material to be carried by a conventional round baler. Although the width of the netting material would be the same as is carried on the conventional rolls, the leading and trailing ends of the bundles of folded netting material would be coupled or tied together to make a long supply of netting for application to the net wrapping mechanism without requiring a change in the mechanisms. The operator would have longer periods of application of netting material between re-loadings of the supply boxes, and the loading of the netting material would be easier since the lack of a core would make the netting bundles lighter and easier to handle.

[0130] One skilled in the art will recognize that the above-described continuous round baler 10 presents a lightweight, compact round bale forming machine that is much smaller and less complex than most conventional round balers, and certainly smaller and significantly less complex than known continuous round balers. The operation of the continuous round baler 10 to collect crop material from the field is never interrupted, while the formation of the round bale is genuinely continuous, unless the machine 10 is encountering light crop conditions and the operator desires to interrupt the bale formation process as the crop material is accumulated on the transfer table 18 before re-starting the rotation of the rollers 25, 28 and feed the accumulated material into the bale chamber 20.

[0131] Alternative net wrapping apparatus and bale severance devices can be seen in FIGS. 17-43. Looking first at FIGS. 17-30, an alternative net wrapping mechanism utilizing small width rolls of netting material instead of the folded netting material disclosed above. The configuration of the round baler 10 is essential the same as described above with like reference numbers being used for like components. Instead of a folded net wrapping mechanism 50, this alternative roll net wrapping mechanism 60 utilizes a plurality of small width rolls of netting material, similar to conventional netting material except having a small axial width. The width of the rolls of netting material is intended to be substantially equal to the height of the cylindrical rollers 28, although depending on the rotational speed of the cylindrical bale at the location of the cylindrical rollers 28, the width of the netting material could be smaller than the height of the cylindrical rollers 28.

[0132] The roll net wrapping mechanism 60 is preferably mounted along the front of the baler 10 and configured to feed netting material between the cylindrical rollers 28 for application to the formed cylindrical bale while in engagement with the cylindrical rollers 28. The small width rolls of netting material are numbered 1-4 in the drawings to reflect the order of utilization. The rolls of netting material 1-4 are mounted on a center mounting tube 61, best seen in FIGS. 20-22. The center mounting tube 61 is hollow and formed with an access opening 62 in the circumference to gain access to the central hollow of the center mounting tube 61. As depicted in FIG. 21, the tail end 63 of the netting material at the center of the roll 1-4, is fed into the access opening and then through the end of the center mounting tube 61 so that a knot 64 can be formed therein before being pulled back into the central hollow of the center mounting tube 61. The roll of netting material is then mounted on the center mounting tube 61 and then supported on the front of the baler 10.

[0133] The head end 65 of the netting material on the roll 1-4 is then looped and knotted as shown in FIG. 22 to form an interlock loop 66 as depicted in FIG. 22. With all rolls of netting material, four being shown in FIG. 17, although the number of rolls will be determined by the size of the baler 10 and the width of the rolls 1-4, mounted on the front of the baler 10 for rotational movement to dispense the netting material from the rolls 1-4, the interlock mechanism 70 is utilized to engage each of the rolls of netting material 1-4 for sequential utilization to dispense netting material into the net wrapping apparatus 60. Preferably, manufacturers of netting material would pre-form these small width rolls of netting material with the knotted tail end 63 already positioned within a center mounting tube 61 on which the roll of netting material is mounted, and with an interlock loop 66 appropriately sized and formed in the head end 65 of the netting material. Manufacturers of netting material may only wedge the knotted tail end 63 on the center mounting tube 61 as the tail end knot 64 would not necessarily be required to reside internally of the center mounting tube 61. Then the operator can simply mount and engage the interlock loops 66 as described in greater detail below.

[0134] The interlock mechanism 70 is best seen in FIG. 19. The interlock mechanism 70 includes a first guide bar 72 and a second guide bar 74 positioned above the first guide bar 72 for engagement with the netting material to assist in maintaining tension in the netting material. A loop holder mechanism 75 holds the interlock loops through a plurality of loop holders 76 with each loop holder 76 being pivotally supported on a support bar 77 to permit each loop holder 76 to pivot between an active position and an inactive position, as will be described in greater detail below. As best seen in FIG. 19, each loop holder 76 includes a U-shaped knot retainer 78 having an open end and a flange 79 spaced from the knot retainer 78. The entire loop holder mechanism 75 pivots about an axis defined by the support bar 77 with each loop holder 76 pivoting independently of each other loop holder 76. Although four loop holders 76 are shown in the drawings, one skilled in the art will understand that each roll of netting material mounted in the roll net wrapping apparatus 60 should be provided with a corresponding loop holder 76.

[0135] Once mounted on the front of the baler 10, the head end 65 each roll of netting material is passed through the interlock loop 66 of the next sequential roll and then positioned in the loop holder 76 of the previous sequential roll with the knot 67 located on the adjacent side of the U-shaped knot retainer 78 and the netting material passed through the U-shaped knot retainer 78 so that the interlock loop 66 rests on the flange 79. More specifically utilizing four rolls of netting material as is shown in FIG. 17, the rolls of netting material 1-4 are mounted in the following manner. The head end of the netting material on roll 4 is passed behind the first guide bar 72 and then passed between the corresponding U-shaped knot retainer 78 and the flange 79. The interlock loop 66 is then moved to the loop holder 76 corresponding to roll 3 with the knot 67 on the adjacent side of the U-shaped knot retainer 78 and the interlock loop 66 resting on the flange 79 of the loop holder 76 for roll 3.

[0136] The head end 65 of the netting material on roll 3 is then passed behind the first guide bar 72 and then upwardly through the interlock loop 66 of roll 4. As with the head end 65 of roll 4, the interlock loop 66 is passed through the U-shaped knot retainer 78 to keep the knot 67 on the adjacent side thereof and the interlock loop resting on the flange 79 of the loop holder 76 for roll 2. Similarly, the head end 65 of the netting material from roll 2 is passed behind the first guide bar and then upwardly through the interlock loop 66 of roll 3. The head end 65 for roll 2 is then moved through the loop holder 76 for roll 1 with the knot 67 on the adjacent side of the knot retainer 78 and the interlock loop 66 resting on the flange 79 of the loop holder 76 for roll 1.

[0137] The head end of roll 1 is then passed behind the first guide bar 72 and upwardly through the interlock loop 66 of roll 2. The head end 65 of the netting material for roll 1 is then passed upwardly in front of the second guide bar 74 and wrapped over the second guide bar 74 for entrance into and through the net receiver 68 followed by engagement with the net spreader rolls 69. If more than four rolls of netting material are used, the additional rolls are connected to the interlock mechanism 70 as iterations of the procedure described above. The spreader rolls 69 operate to spread the netting material received from the net receiver 68 to the width required for application to the cylindrical bale which is accomplished by passing between selected cylindrical rollers 28. It will be recognized by one skilled in the art that the receiving opening of the net receiver is wide transversely to receive netting material from all four rolls. The discharge opening of the net receiver, however, is small to provide a consistent point of application of the netting material to the spreader rolls 69.

[0138] Looking then at FIGS. 17-30, the operation of the roll net wrapping apparatus 60 can best be seen. The netting material is dispensed from roll 1 through the net receiver 68 and to the spreader rolls 69 for application between cylindrical rolls 28 to the engaged cylindrical bale until the supply of netting material on roll 1 is exhausted. As seen in FIGS. 23-26, the exhaustion of netting material on roll 1 results in the tail end knot 64 being popped from the access opening 62 and passing upwardly to engage the interlock loop 66 of roll 2. As depicted in FIGS. 27-30, the tail end knot 64 is sized so that the tail end knot 64 cannot pass through the interlock loop 66. As a result, the interlock loop 66 of roll 2 is carried along with the tail end knot 64 of roll 1 into the net receiver.

[0139] The engagement of the tail end knot 64 with the interlock loop 66 of roll 2 pulls the head end 65 of the roll 2 netting material upwardly. Since the knot 67 cannot pass through the U-shaped knot retainer 78 on the loop holder 76 for roll 1, the knot 67 causes the loop holder 76 to pivot on the support bar 77 until the U-shaped knot retainer 78 is oriented substantially vertically, as is depicted in FIG. 28, so that the knot 67 can move upwardly into the net receiver 68. One skilled in the art will recognize that the loop holder 76 may need to be spring-biased to the engagement position, with the spring (not shown) going overcenter when the loop holder 76 is tipped upwardly. The supply of netting material will then come from roll 2 passing in front of the second guide bar 74 until the supply of netting material on roll 2 is exhausted and the engagement of the tail end knot 64 of roll 2 with the interlock loop of roll 3 switches the supply to roll 3 in the same manner as described above. Looking at FIG. 19, the arrangement of the first guide bar 72, loop holders 76 and the support bar 77 maintains the interlock loop 66 in position on the corresponding loop holder 76. With the supply of netting material passing behind the first guide bar 72 and through the interlock loop 66 for the subsequent roll, the U-shaped interlock loop 66 prevents the head end 65 of the netting material from slipping rearwardly from the interlock mechanism 70 and the netting material engaging the first guide bar 72 prevents the interlock loop 66 from slipping forwardly of the loop holder 76.

[0140] Referring now to FIGS. 31-39, a first alternative bale severance mechanism 80 can best be seen. The primary function of the first alternative bale severance mechanism 80 is to sever the crop material as the crop material enters the conical bale forming chamber 22 maintaining a parallel cut path to define a line of separation between the formed cylindrical bales. As is noted previously, the draft tongue 14 provides support for the telescopic extension of the support beam 32 for the rear support plate 30. More specifically, the draft tongue 14 includes a hitch member that extends generally horizontally, and a hollow frame member 14a that extends upwardly from the hitch member at an acute angle extending from a vertical orientation. This acute angle is preferably less than 60 degrees so that the protruded cylindrical bale is oriented at the same angle relative to vertical.

[0141] The first alternative bale severance mechanism 80 includes a knife member 81 supported on the distal end of an articulated mounting arm 82 that is affixed to a bifurcated support arm 85 that is pivotally connected to a mounting bracket 86 supported on the roller support member 15, and is pivotally connected to a slotted mounting bracket 87 formed as part of the support beam 32 extending telescopically from the frame member 14a. One skilled in the art will note that many of the components of the round baler 10 have been broken away for the purpose of clarity in the viewing of this first alternative bale severance mechanism 80. The articulated mounting arm 82 is formed with a knife holder 83 that is pivotally connected to an upper mounting arm 84 that is pivotally received in the slotted mounting bracket 87. The knife member 81 is fixed to the knife holder 83 in a manner such that the knife member 81 is oriented perpendicularly to the angle of the hollow frame member 14a so that the cuts made to the crop material by the knife member 81 are perpendicular to the cylindrical axis of the bale being formed. The knife holder 83 is disposed relative to the knife member 81 at the angle of the conical bale forming chamber 22 such that the vertical movement of the mounting arm 82 keeps the knife holder 83 parallel to the side of the conical bale chamber 22.

[0142] Movement of the mounting arm 82 is accomplished by the movement of the protruding cylindrical bale, or alternatively can be powered to correspond to the protrusion of the cylindrical bale, in conjunction with the engagement of the rear support plate 30 mounted on the distal end of the support beam 32. Accordingly, the rear support plate 30 moves with the protruding cylindrical bale to maintain support of the upper end thereof. As the support beam 32 extends telescopically from the hollow frame member 14a, the slotted mounting bracket 87 moves upwardly with the support beam 32 and pulls the upper mounting arm 84 with the support beam 32. The fixed connection between the upper mounting arm 84 and the bifurcated support arm moves the pivotal connection between the upper mounting arm 84 and the knife holder 83 upwardly and outwardly from the cylindrical bale, as can be seen in comparisons between FIGS. 34-37.

[0143] As a result, the knife member 81 rises with the protruding cylindrical bale to maintain a cutting operation on the incoming crop material in a parallel manner to define a separation between formed cylindrical bales. The knife member 81 has a length that is as long as the depth of the incoming swath of crop material inserted into the conical bale chamber 22 so that the knife member 81 will cut the incoming crop material as the crop material is inputted into the conical bale chamber 22 and the bale is protruded upwardly. The progression of the inputted crop material relative to the knife member 81 is seen in FIGS. 34-37. In FIG. 34 the knife member 81 is inserted into the conical bale chamber 22 between a pair of selected adjacent conical rollers 25, as well as between the corresponding circular rollers 28. The outermost layer of incoming crop material is highlighted in FIG. 34.

[0144] The progression of the cylindrical bale is depicted in FIG. 35 such that the crop material in the conical bale chamber 22 has made approximately two revolutions, adding two layers of crop material outside of the highlighted layer. The knife member 81 remains located between the selected conical rollers 25, but rises with the protrusion of the cylindrical bale as a result of the telescopic extension of the support beam 32 from the hollow frame member 14a. In FIG. 36, additional layers of crop material have been inputted into the conical bale chamber 22 causing the cylindrical bale to protrude further and moving the knife member 81 vertically within the conical bale chamber 22. The original highlighted layer is now positioned at the center of the formed cylindrical bale that is about to be discharged from the baler 10.

[0145] In FIG. 37, the formed cylindrical bale has moved to the top of the array of cylindrical rollers 28 and the knife member has passed between the selected cylindrical rollers 28 and is located at the top of the array. The formed cylindrical bale is discharged from the baler 10 in FIG. 38 as the rear support plate 30 is disengaged, allowing the bale to fall to the ground. In FIG. 39, the support beam 32 is retracted into the hollow frame member 14a, the rear support plate 30 is re-engaged with the top surface of the newly forming cylindrical bale, and the knife member 81 is re-positioned for insertion into the conical bale chamber 22 to start the bale severance process anew.

[0146] A second alternative bale severance mechanism 90 is depicted in FIGS. 40 and 41 and is similar to the bale severance device 40 described above. The second alternative bale severance device 90 utilizes a pair of cutting blades 92 mounted on the circular roller support member 15 on opposite sides of the protruding cylindrical bale. At the desired moment of actuation to separate a desired length of cylindrical bale for discharge, the hydraulic cylinders 94 operatively coupled to the blades 92 swing the blades 92 into engagement with the cylindrical bale. As with the bale severance device 40, the blades 92 and hydraulic cylinders 94 are movable with the protrusion of the cylindrical bale. The cutting blade 92a adjacent the hollow frame member 14a is coupled to the support beam to move upwardly with the support beam 32. However, to permit a corresponding movement for the other cutting blade 92b, a secondary support 95 would be required to enable the upward movement of the cutting blade 92b and the associated hydraulic cylinder 94.

[0147] The second alternative bale severance mechanism 90 has the advantage of simplicity, as well as speed of operation. With two cutting blades 92 operating to sever the protruded cylindrical bale, the separation process can be accomplished quickly. Furthermore, compared to the long knife 42 of the bale severance device 40, neither of the cutting blades 92 is positioned outside of the confines of the circular roller support member 15 during operation or during storage waiting to be activated. Some control of the discharge movement of the separated cylindrical bale would need to be provided to protect the secondary support 95, the cutting blade 92b and the corresponding hydraulic cylinder 94.

[0148] A bale density spear 97 is depicted in FIGS. 42 and 43. The bale density spear 97 is detachably secured to a bottom plate 24 of the conical bale chamber 22 in a manner to be rotatable with the crop material within the conical bale chamber 22. The bale density spear 97 includes a slender lower shaft 98 that spreads into triangular fins 99. As the crop material enters into the conical bale chamber 22, the crop material entering the conical bale chamber 22 pushes the crop material already in the conical bale chamber upwardly toward the circular portion of the bale chamber 27. The fins 99 of the bale density spear 97 resist this upward movement of the forming bale and, therefore, increase the density of the bale being formed in the conical bale chamber 22. The bale density spear 97 can be freely rotatable to move with the forming bale. Alternatively, the bottom plate 24 can be rotatably driven independently, or in conjunction with the rotation of the conical rollers 25, thereby causing the bale density spear 97 to rotate. The powered version of the bale density spear 97 can also function to start the rotation of the crop material within the conical bale chamber 22, especially in conjunction with the initial bale being formed.

[0149] It will be understood that changes in the details, materials, steps and arrangements of parts which have been described and illustrated to explain the nature of the invention will occur to and may be made by those skilled in the art upon a reading of this disclosure within the principles and scope of the invention. The foregoing description illustrates the preferred embodiment of the invention; however, concepts, as based upon the description, may be employed in other embodiments without departing from the scope of the invention.