LIFT AND TILT DEVICE, BALER EQUIPPED THEREWITH AND METHOD OF ITS OPERATION
20210370631 · 2021-12-02
Inventors
Cpc classification
B65F1/1452
PERFORMING OPERATIONS; TRANSPORTING
B65G67/30
PERFORMING OPERATIONS; TRANSPORTING
International classification
B30B9/30
PERFORMING OPERATIONS; TRANSPORTING
Abstract
In that the lifting and tilting device (22)—which can be used as a separate assembly or integrated in or on a baler (1) for lifting up and tilting out a collector trolley (SW)—consists of only one long pivot arm (30) and a tilting part (31) tiltably attached thereto, the tilting movement of which is controlled by a link guide (33), a very stable, structurally simple and purely mechanical device can be achieved, as well as a baler (1) equipped therewith.
Claims
1. Lift-tilt device (22) for picking up, moving and emptying a collector trolley (SW) filled with packaging materials, comprising a base press plunger (32), a pivot arm (30) that is pivotally attached to the base press plunger e (32) about an arm axis (30′), a fixing device (23) for fastening the collector trolley (SW) to the pivot arm (30), a tilting device (33) for tilting the collector trolley (SW), characterized in that the tilting device (33) comprises a tilting part (31) pivotably mounted on the pivot arm (30) about a tilting axis (31′), wherein the fixing device (23) is fixed against rotation to the tilting part (31).
2. Lift-tilt device according to claim 1, characterized in that the tilting device (33) is a slotted guide (33) with a guideway (34) and a guided element (35) guided along the latter, the tilting part (31) carries the guided element (35).
3. The lift-tilt device according to claim 2, characterized in that the guideway (34) is a guide groove (34), the guided element (35) is a slot nut (35), in particular a slot roller (35).
4. The lift-tilt device according to claim 1, characterized in that the pivot arm (30) is rigidly formed between the arm axis (30′) and the tilting part (31), in particular does not comprise a joint.
5. The lift-tilt device according to claim 1, characterized in that the arm axis (30′) and the tilting axis (31′) are parallel to each other, in particular are horizontally.
6. The lift-tilt device according to claim 1 characterized in that the device comprises only one pivot arm (30).
7. The lift-tilt device according to claim 1, characterized in that the pivot arm (30) can be pivoted between an upper and a lower end stop (36a, b), in particular the pivot arm (30) points inclined downwards from the arm axis (30′) in the lower end position, i.e. in contact with the lower end stop (36a), and points inclined upwards in the upper end position, i.e. in contact with the upper end stop (36b).
8. The lift-tilt device according to claim 7, characterized in that the pivot drive for the pivot arm (30) is a hydraulic cylinder (38).
9. The lift-tilt device according to claim 2, characterized in that the lower part of the guideway (34), in particular the lower initial area of the guideway (34), is an arc of a circle around the arm axis (30′) and/or the curvature of the guideway (34) is greatest in its central region.
10. The lift-tilt device according to claim 8, characterized in that the lift-tilt device (22) comprises a bearing block (37) in which the pivot arm (30) is pivotably mounted and the hydraulic cylinder (38) for pivoting the pivot arm (30) is fixed between the bearing block (37) and the pivot arm (30).
11. Baler (1) for compressing in particular packaging materials into bales, comprising a press box (2) with a bottom (2a) and side walls (2.1-2.4) projecting upwardly therefrom and a removal opening, a press plunger (3) movable in the press box (2), a filling device (20) with a lift-tilt device (22) for picking up, moving and emptying a collector trolley (SW) filled with packaging materials for automatic filling of the press box (2) through a filling opening (2.2a), characterized in that the lift-tilt device (22) is embodied according to claim 1.
12. A baler according to claim 11, characterized in that the lifting-tilting device (22) is attached to the baler (1) in particular as a base fpress plunger e (32), in particular the bearing block (37) is bolted to the baler (1).
13. The baler according to claim 11, characterized in that the baler (1) is a vertical box baler (1), the press plunger (3) can be moved up and down in the press box (2). the press box (2) has a removal opening (2.1a) which can be closed by a removal door (12).
14. The baler according to claim 11, characterized in that if only one pivot arm (30) is present, this is attached to the baler (1) on the anti-operator side (1d) facing away from the operator side (1c), the fixing device (23) extends from the pivot arm (30) in the direction to the operator side (1c).
15. The baler according to claim 11, characterized in that the filling device (20) comprises a storage container (21) for receiving loose material to be pressed (P), which comprises a filling opening (21b1), in particular in the upper region, in particular in the upper side (21b), of the storage container (21), in particular in that the upper side (21b) is completely open, the storage container (21) is in communication with the filling opening (2.2a), in particular the bottom (21a) of the storage container (21) extends up to the filling opening (2.2a) and ends at its level or above it, in particular adjoins it.
16. The baler according to claim 11, characterized in that the storage container (21) has a sufficiently large volume to hold a complete batch with, in particular, a predetermined volume of, in particular, loose material to be pressed (P), the specified volume of a complete batch corresponds to the volume of a collector trolley (SW) for loose material to be pressed (P).
17. The baler according to claim 11, characterized in that the storage container (21) comprises a storage slide (24) which is movable towards and away from the filling opening (2.2a) between two end positions, wherein in one end position the storage slide (24) closes the filling opening (2.2a) of the press box (2) and its front surface is part of the inner surface of one of the walls (2.2-2.4) of the press box (2) and/or in one end position the storage slide (24) is part of that side wall (2.2) in which the filling opening (2.2a) is located, in particular in the other end position, the storage slide (24) is located at the end of the storage container (21) facing away from the filling opening (2.2a).
18. The baler according to claim 17, characterized in that the storage slider (24) either can be moved back and forth in the storage container (21), or the end wall (21.1) of the storage container (21) facing away from the filling opening (2.2a) is the storage slide (24) and in particular the side walls (21.2, 21.3) are embodied to be variable in length, in particular multi-part, in particular telescopic.
19. The baler according to claim 17, characterized in that the storage slide (24) is moved by means of slide cylinders (26a, b) on both sides, preferably running in its direction of movement (24′), which run in particular along the outer sides of the storage container (21) and in particular also along the outer sides of the longitudinal walls (2.3, 2.4) of the press box (2), and/or the slide cylinders (26a, b) are embodied as pull cylinders.
20. The baler according to claim 17, characterized in that the pivot arm (30), the storage slide (24), and the at least one press plunger (3) have separate drives and in particular can be actuated independently of one another, in particular in the case of hydraulic drives, separate and in particular independently controllable pressure sources, in particular hydraulic pumps, are provided for this purpose.
21. The baler according to claim 11, characterized in that the storage container (21) comprises a cover flap (25) which is displaceable, in particular pivotable, between a closed position closing the filling opening (21b1), in particular the open upper side (21b), of the storage container (21) and an open position not closing it, in particular leaving it completely open, in particular the volume of the storage container (21) in the closed position of the cover flap (25) is less than the predetermined volume of a batch, in particular in the closed position, the underside (25b) of the cover flap (25) runs parallel to the bottom (21a) of the storage container (21), and/or the cover flap (25) has, on its free side facing away from its pivot axis (25′), an offset in the direction of the storage container (21).
22. The baler according to claim 21, characterized in that the cover flap (25) is embodied in such a way that it can be used as a guiding flap which can be displaced, in particular pivoted, between a guide position inclined to the bottom (21a) above the open top (21b) of the storage container (21) and an open position less overlapping the latter, in the guide position, the underside of the guiding flap approaches the bottom (21a) of the storage container (21) in the direction of the filling opening (2.2a), in particular, side plates (29a, b) are provided which, in the guide position, close the free space between the side edges of the guiding flap and the edge of the open top (21b) of the storage container (21).
23. The baler according to claim 17, characterized in that a cover element (27) is provided which extends from the upper edge of the storage slide (24) in the direction away from the filling opening (2.2a) and closes the area between the rear side of the storage slide (24) and the part of the storage container (21) adjacent thereto as viewed in plan view.
24. The baler according to claim 17, characterized in that the bottom (21a) of the storage container (21) rises filling opening upward, in particular as a flat surface, toward the filling opening (2.2a), in particular toward its lower edge, the feed direction (24′) of the storage slide (24) runs parallel to the bottom (21a) of the supply container (21), the front side (24a) of the storage slide (24) is arranged parallel to the inner surface of that side wall (2.2) in which the filling opening (2.2a) is located.
25. The baler according to claim 11, characterized in that the storage container (21) is attached to the press box (2) so as to be displaceable in height up to an upper position in which the box-side edge of the bottom (21a) is aligned with the lower edge of the filling opening (2.2a) or lies higher.
26. The method of operating a baler (1) according to claim 11, whose press box (2) is filled automatically, characterized in that the press box (2) is filled automatically in batches.
27. Method according to claim 26, characterized in that the, in particular loose, material to be pressed (P) is automatically pressed, in particular pushed, through the filling opening (2.2a) into the press box (2).
28. The method according to claim 27, characterized in that the, in particular loose, material to be pressed (P) is compressed in height, i.e. precompressed, before or during pressing into the press box (2) through the filling opening (2.2a) to a height which is equal to or less than the height of the filling opening (2.2a).
29. The method according to claim 27, characterized in that the, in particular loose, material to be pressed (P) before it is pressed into the press box (2) through the filling opening (2.2a) is either distributed over a smaller width considered in the top view than the width of the filling opening (2.2a), or before or during pressing into the press box (2) through the filling opening (2.2a) is compressed in width to a width which is smaller than the width of the filling opening (2.2a).
30. The method according to claim 27 characterized in that during pressing of the material to be pressed (P) in the press box (2) a collector trolley (SW) can still be moved back into the docking position by the lift-tilt device (22), in particular a new, filled collector trolley (SW) can be attached to the lift-tilt device (22), and/or the storage container (21) of the filling device (20) can already be refilled with material to be pressed (P).
31. The method according to claim 27, characterized in that the, in particular loose, material to be pressed (P) is pushed upwards through the filling opening (2.2a) to the height of the filling opening (2.2a) before being pressed into the press box (2).
32. The method according to claim 27, characterized in that the, in particular loose, material to be pressed (P) is lifted upwards through the filling opening (2.2a) to the height of the filling opening (2.2a) before being pressed into the press box (2).
Description
EXAMPLES OF EMBODIMENTS
[0096] Embodiments according to the invention are described in more detail below by way of example. They show:
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[0100]
[0101]
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[0106]
[0107]
[0108]
[0109]
[0110]
[0111]
[0112] In
[0113] Accordingly, the collector trolley SW attached to a fixing device 23, which is held on the pivot arm 30 by means of a tilting part 31, is already raised far from the floor U on which it is approached for hooking into the lowered fixing device 23 as shown in
[0114] In this case, the upper opening SWo of the collector trolley SW already points to the left and hardly upwards, as in the initial state of the collector trolley SW standing on the floor U.
[0115] It is conceivable from
[0116] Exactly this further raised position of the pivot arm 30 and even more tilted position of the tilting part 31 is shown in
[0117] The tilting axis 31′ is located in the pivot arm 30 outside the guide groove 34 as viewed from its arm axis 30″, which runs approximately horizontally in this upper end region.
[0118] As can best be seen in
[0119] The pivot arm 30—on which the fixing device 23 is cantilevered mounted, i.e., mounted on only a single pivot arm 30—is supported in a solidly formed, armshaped bearing block 37, which is attached to one side, the arm side, of the base plate 32 via a reinforcing flange plate 39.
[0120] The tilting part 31, on the other hand, is located on the other side, the carriage side, of the base plate 32, and the tilting axis 31′, via which the tilting part 31 and the pivot arm 30 are hinged to one another, is located outside the base plate 32 in the view of the base plate 32 according to
[0121] Accordingly, the fixing device 23 is also located on the carriage side of the base plate 32, and in
[0122] To pivot the pivot arm 30, a hydraulic cylinder 38, which is inserted away from the arm axis 30″ between the bearing block 37 and the pivot arm 30, is extended or retracted. The hydraulic cylinder 38 is supplied with hydraulic fluid by its own hydraulic pump driven by an electric motor, which is also attached to the base plate 32 on the arm side, or from a hydraulic source remote therefrom, and can be acted upon in either the extending direction or the retracting direction.
[0123] Thus, the lift-and-tilt device 22 may be positioned adjacent to an assembly having a filling opening into which a collector trolley SW is to be emptied.
[0124]
[0125] Preferably, the hydraulic circuit of the baler 1 is connected to and supplied with hydraulic fluid from the hydraulic cylinder 38 of the lift-tilt device 22, rather than using its own hydraulic pump.
[0126] In
[0127] It can be seen that the arm axis 30′ lies in the width range of the press box 2 in the direction of view of the arm axis 30′.
[0128] The vertically acting box baler 1 shown comprises, as generic components, a press box 2 with a bottom 2a which, viewed in plan view, has an approximately rectangular shape in this case, so that a total of four side walls 2.1 to 2.4 project upwards from its outer regions, namely a front wall 2.1, a rear wall 2.2 opposite the latter, and longitudinal walls 2.3, 2.4 connecting these two walls to one another.
[0129] In the press box 2, as can best be seen in
[0130] The press plunger 3 is attached to the lower ends of the piston rods—only piston rod 14.1 is visible in
[0131] To apply high pressing forces, the two outer pressing cylinders 13.1 and 13,3 are extended downward, while the middle pressing cylinder 13.2 with its smaller cross section is used as a rapid-motion cylinder, for example to move the pressing press plunger 3 quickly upward back into the deactivated position.
[0132] Between the vertically extending press cylinders 13.1 to 13.3, which are arranged in a common plane parallel to one another, there is in each case a guiding rod 16a, b, the lower ends of which are likewise firmly connected to the press plunger 3 and are intended to prevent an inclined position and thus tilting of the press plunger 3 in the press box 2.
[0133] The front wall 2.1 of the press box 2, which is present on the front side 1a of the box baler 1, is hinged to one of the longitudinal walls 2.3 via a vertically positioned pivot axis and can be swung open relative to the latter like a door—as shown closed in
[0134] In a vertical box baler of this type, the rear wall 2.2 of the pressing box 2 is usually closed or at most—if strapping of the finished bales is provided—has slots for the strapping medium to pass through.
[0135] The rear wall 2.2 representing the rear side 1b is preferably manufactured as a one-piece welded part, and the filling of the press box 2 with material M to be pressed is carried out from the front side 1a, in that in the movable front wall 2.1, which thereby forms a removal door 12, the upper part is formed as a filling flap 2.1.1, which is movably attached to the rest of the front door 2.1 and can be moved downward along guides so that a filling opening is open in the upper part of the front wall 2.1, via which material to be pressed can be inserted from the front side 1a.
[0136] On the one hand, the operator side 1c, on which the operating elements such as input unit, emergency switch and the like for the operator are arranged, runs between the front side 1a and the rear side 1b. The pivot arm 30 of the lift-tilt device 22, on the other hand, is arranged on the anti-operator side 1d opposite the operator side 1c. The fixing device 23, which is U-shaped in plan view, for holding the collector trolley SW projects in front of the front side 1a.
[0137] On the one hand, the vertically acting box baler 1 shown, additionally has a filling opening 2.2a in the upper region of the rear wall 2.2, which represents the rear side 1b, through which it can be filled automatically.
[0138] The filling opening to be opened in the front wall 2.1, formed as described by forming a filling flap 2.1.1 in the removal door 2.1, may additionally be present, but this is not a prerequisite for the realization of the invention. The front wall 2.1 can be formed as a closed removal door 12, which is only movable as a whole as a door.
[0139] Automatic filling is carried out by means of a filling device 20, which additionally comprises a box-shaped storage container 21, which adjoins the rear wall 2.2 of the press box 2 on the outside and has a bottom 21a sloping downwards from the press box 2 in
[0140] The upper side 21b of the storage container 21 can be closed by a cover flap 25, which can be pivoted about a horizontally extending pivot axis 25′ near the press box 2 between the lowered position of the cover flap 25 closing the upper side 21b, in which the lower side of the cover flap 25 runs parallel to the bottom 21a of the storage container 21, and a filling position in which the cover flap 25 is pivoted upwards—as shown—with the aid of a tilting cylinder 28.
[0141] In this filling position, a collector trolley SW filled with material to be pressed M and open at the top SWo can be swung up and emptied into the storage container 21 over the top edge of the end wall 21e of the latter.
[0142] Lifting, tilting, emptying, tilting back and setting down of the collector trolley SW is generally performed automatically by means of the lifting-tilting device 22 according to the invention, as shown in
[0143] After the collector trolley SW has been swung back, the cover flap 25 can be closed by means of the tilting cylinder 28, the tilting cylinder 28 being able to provide sufficient pivot force to ensure that loose material M to be pressed projecting above the level of the upper edge of the end wall 21e from the underside 25b of the cover flap 25 is compressed below this level.
[0144] Since only one tilting cylinder 28 is to be used, which is centered on the cover flap 25 in the 2nd transverse direction 11.2, it must be avoided that when the cover flap 25 is pressed down into the upper side of the storage container 21 by material M of different rigidity on the two sides, the cover flap 25 does not quite reach the upper side of the storage container 21 at its free end on one side and lies somewhat filling opening and thus the other side lies too low, namely in the path of movement of the slide 24 and blocks it.
[0145] For this purpose, at the two lateral ends of the cover flap 25 in the 2nd transverse direction 11.2, the stop arms 25a, which are best visible in
[0146] At their free ends, they each have a stop hook 25a1 which, when the cover flap 25 is closed, strikes the upper end edge of the rear wall 21e of the storage container 21 and prevents the free end of the cover flap 25 from sinking too deeply into the storage container 21
[0147] Inside the storage container 21, a storage slide 24 is movable between a retracted position near the end wall 21e and an advanced or advanced position near the filling opening 2.2a of the press box 2, the lower edge of the storage slide 24 moving along close to the bottom 21a.
[0148] In the advanced end position, the storage slide 24 is preferably not only close to the filling opening 2.2a, but in this filling opening 2.2a, which it closes completely, so that it becomes part of the rear wall 2.2 of the press box 2 and its front surface facing the press box 2 is aligned with the inner surface of the remaining rear wall 2.2.
[0149] The storage slide 24 is moved by means of two slide cylinders 26a, b which run along the outer sides of the side walls 21c, d of the supply container 21 and also along the longitudinal walls 2.3, 2.4 of the press box 2 in the first horizontal transverse direction 11.1, one end of each slide cylinder 26a, b being fixed to a respective one of the longitudinal walls 2.3, 2.4 in the vicinity of the front wall 2.1, while the other end is connected to the storage slide 24 through the side wall 21c, d of the storage container 21.
[0150] The slide cylinders 26a, b are preferably embodied as double-acting hydraulic cylinders that can be pressurized in both directions.
[0151] In the embodiment of
[0152] As a result, its free end facing away from the bale chamber 2, i.e. also the end wall 21e and its upper edge, is considerably lower than in the second design according to the following
[0153]
[0154] Additionally, in
[0155] The end wall 21e of the storage container 21 is vertical as in the 1st embodiment, and so is the storage slide 24 arranged therein, but the slide direction 24′ of the storage slide 24 is now horizontal.
[0156] The remaining construction of the baler 1 corresponds to that of the first embodiment of
[0157] Furthermore, in
[0158] When used as a cover flap 25, this lower end position is an end position parallel to the base 21a, in which the distance between the closed cover flap 25 and the base 21a then remains the same over the entire displacement path of the storage slide 24, in particular until the latter has reached its end position in the filling opening 2.2a and there becomes part of the corresponding side wall 2.2.
[0159] Of course, the lift-and-tilt device 22 according to the invention can also be used to empty the contents of a collector trolley SW directly into a pressing box 2, and not only into a storage container 21 upstream of this press box 2 and serving as a buffer store.
[0160] As shown, this can be a box baler, in particular a vertically acting box baler, or also a—then usually horizontally acting—channel baler.
REFERENCE LIST
[0161] 1 baler, box baler
[0162] 1a front side
[0163] 1b back side
[0164] 1c operator side
[0165] 1d anti operator side
[0166] 2 press box
[0167] 2a bottom
[0168] 2.1 sidewall, front wall
[0169] 2.1.1 filling flap
[0170] 2.1a removal opening
[0171] 2.2 sidewall, back wall
[0172] 2.2a filling opening
[0173] 2.3, 2.4 side wall, longitudinal wall
[0174] 3 press plunger
[0175] 4 counter flange plate
[0176] 10 Pressing direction, vertical
[0177] 11.1 1. transversal direction, process flow direction
[0178] 11. 22. transversal direction
[0179] 12 removal door
[0180] 13.1-13.3 press cylinder
[0181] 14.1-14.2 piston rod
[0182] 15a,b guiding rod
[0183] 20 filling device
[0184] 21 storage container
[0185] 21a bottom
[0186] 21b top side
[0187] 21b1 batch opening, charge opening
[0188] 21c,d sidewall
[0189] 21e end wall
[0190] 22 Lift and tilt device
[0191] 23 fixing device
[0192] 24 storage slid
[0193] 24′ direction of movement, sliding direction
[0194] 25 cover flap
[0195] 25′ tilting axis
[0196] 25* guide flap
[0197] 25a stop arm
[0198] 25a1 stop hook
[0199] 25b underside
[0200] 26a, b slide cylinder
[0201] 27 cover element
[0202] 28 tilting cylinder
[0203] 29a, b side plate
[0204] 30 pivot arm
[0205] 30′ arm axis
[0206] 31 tilting part
[0207] 31′ tilting axis
[0208] 32 base press plunger, base plate
[0209] 33 tilting device
[0210] 34 guideway, guide groove
[0211] 34* guide plate
[0212] 35 guided element, slot nut, slot roller
[0213] 36a, b upper/lower end stop
[0214] 37 bearing block
[0215] 38 hydraulic cylinder
[0216] 39 flange plate
[0217] P material to be pressed
[0218] SW collector trolley
[0219] SWo upper opening
[0220] U floor