Method for operating a round baler and a round baler

Abstract

The present disclosure relates to a method for operating a round baler. The method comprises providing a nonstop baler type machine; feeding of crop into a prechamber and a main bale forming chamber; and providing, by a binding unit, a binding material to the main bale forming chamber for wrapping a bale formed in the main bale forming chamber, comprising, in a first mode of operation, providing a stretching apparatus in contact with the binding material, thereby, applying a compressive force to the binding material for stretching the binding material; and in a second mode of operation, providing the stretching apparatus free of contact with the binding material. Furthermore, a round baler is disclosed.

Claims

1. A method for operating a round baler, comprising providing a nonstop baler type machine; feeding of crop into a prechamber and a main bale forming chamber; and providing, by a binding unit, a binding material to the main bale forming chamber for wrapping a bale formed in the main bale forming chamber, comprising in a first mode of operation, providing a stretching apparatus comprising a first stretching roller and a second stretching roller in contact with the binding material, providing a compressive force against at least one of a surface of the first stretching roller and a surface of the second stretching roller, thereby, applying a compressive force to the binding material for stretching the binding material; and in a second mode of operation, providing the stretching apparatus free of contact with the binding material.

2. The method according to claim 1, wherein the first and second stretching rollers are moved simultaneously for at least one of providing the first and second stretching rollers in contact with the binding material and for providing both the first and second stretching rollers free of contact with the binding material.

3. The method according to claim 2, wherein the first and second stretching rollers are moved by a single actuator.

4. The method according to claim 1, wherein a first compressive force applied to the binding material by the first stretching roller is different from a second compressive force applied to the binding material by the second stretching roller.

5. The method according to claim 1, wherein the applying comprises applying the compressive force against a circumference of a binding material roller which is supporting the binding material and from which the binding material is unrolled for providing the binding material to the main bale forming chamber.

6. The method according to claim 1, wherein the applying comprises applying the compressive force against a side of the binding material, wherein an opposite side of the binding material is unsupported.

7. A round baler, comprising a prechamber; a main bale forming chamber; a feed channel configured to feed crop into at least one the prechamber and the main chamber; and a binding unit, comprising a stretching apparatus including a first stretching roller and a second stretching roller in contact with the binding material; wherein the binding unit is configured to provide a binding material to the main bale forming chamber for wrapping a bale formed in the main bale forming chamber; in a first mode of operation, provide a compressive force against at least one of a surface of the first stretching roller and a surface of the second stretching roller in contact with the binding material, thereby, applying a compressive force to the binding material for stretching the binding material; and in a second mode of operation, provide the stretching apparatus free of contact with the binding material.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) Following, further embodiments are described by referring to figures. In the figures show:

(2) FIG. 1 a schematic representation of crop flow to the main bale forming chamber, the crop flow entering the chamber encloses the binding material between the outer layer of crop on the bale and the inner material on the bale;

(3) FIG. 2 a schematic representation of the switching of the crop flow to the baler's prechamber at a predetermined point on the bales circumference of the binding material;

(4) FIG. 3 a schematic representation of a binding apparatus, wherein the binding apparatus is provided with a braking mechanism, within the braking mechanism the stretch roller locates in the parked/binding roll recharge position;

(5) FIG. 4 a schematic representation of a binding apparatus, wherein the braking mechanism is shown, within the braking mechanism the stretch roller locates in the binding feed position, located away from the binding material;

(6) FIG. 5 a schematic representation of the binding apparatus, wherein the braking mechanism is shown, within the braking mechanism the stretch roller locates in the stretching position, the stretching position, the stretch roller applying a braking force on the binding material roll;

(7) FIG. 6 a schematic representation of the binding apparatus, wherein the braking mechanism is shown, within the braking mechanism the stretch roller locates in the binding completion position; the stretch roller locates in a non contact position with the binding material; and

(8) FIG. 7 a schematic representation of the binding apparatus, wherein the braking mechanism is shown, within the braking mechanism the stretch roller locates in the binding material roll change recharge position.

DETAILED DESCRIPTION OF THE DRAWINGS

(9) FIG. 1 shows a schematic representation of a baling machine 10 of the nonstop type. The baling machine 10 is provided with a prechamber 20 in which a preformed bale is prepared in the process of forming a bale from crop 41. There is a feeding channel 21 configured to feed the crop 41 picked up by a crop pickup mechanism 42 to the prechamber 20.

(10) There is a second feeding channel 45 for feeding or guiding the crop 41 into a main baling forming chamber 60. In the main bale forming chamber 60 a full bale of crop material is prepared.

(11) A crop cutting device 43 is provided. A crop switching plate 44 can be pivoted on the rear side of the crop cutting device 43 for guiding the crop 41 to at least one of the prechamber 20 and the main bale forming chamber 60.

(12) The feeding of the crop 41 is conducted by a feeding mechanism 47.

(13) While according to FIG. 1 the crop 41 is fed to the main bale forming chamber 60, the crop 41 is fed to the prechamber 20 according to FIG. 2 when the crop switching plate 44 is in a different position compared to FIG. 1.

(14) A binding apparatus 31 is provided for the baling machine 10. The binding apparatus 31 is provided with a roll 32 of binding material. A binding material pathway 33 is provided. A tail end 34 of the binding material is on the circumference of the bale 11.

(15) Further, a feeding roller 35 is provided for the binding apparatus 31.

(16) Referring to FIGS. 3 to 7, further aspects are described, specifically with respect to the binding apparatus 31 provided in a binding unit 100.

(17) In FIGS. 3 to 6 bale chamber rollers 102 are depicted applied for forming the bale 11.

(18) A braking apparatus structure 111 is provided.

(19) There are binding material guide rollers 112.

(20) The binding unit 100 is provided with a frame 113. With respect to the binding unit 100, a binding apparatus grouping mechanism 114 and a binding material cutting mechanism 115 are provided.

(21) A part 116 of the binding material is entering the main bale forming chamber 60 between one of the bale chamber rollers 102 and the circumference of the bale 11.

(22) The binding material is provided by a roll of binding material 117. The binding material is moved along a path 118 when leaving the roll of binding material 117.

(23) A stretch roller 119 (stretching/braking roller) is provided.

(24) A secondary force depicted by reference numeral 120 is applied to the stretch roller 119.

(25) There is a braking roller 121 of the braking apparatus structure 111 for providing a braking mechanism.

(26) A primary force depicted by reference numeral 122 is applied to the stretch roller 119.

(27) There is a primary force monitoring device 123.

(28) A connecting rod 124 is connecting an actuator for braking in the brake mechanism.

(29) Further, a binding material feeding roller 125 is provided.

(30) FIG. 3 shows a schematic representation of a binding apparatus, wherein the binding apparatus is provided with a braking mechanism, within the braking mechanism the stretch roller locates in the parked/binding roll recharge position. In this state, the binding unit 31 is in a switch over state, the braking mechanism 121 is lifted into a home position so the binding material roll can be recharged when the binding material 117 goes empty.

(31) FIG. 4 shows a schematic representation of a binding apparatus, wherein the braking mechanism is shown, within the braking mechanism the stretch roller locates in the binding feed position, located away from the binding material. The binding unit 31 is now engaged in the working mode, the roll of binding material 121 is in position and the braking mechanism 121 is lifted from the binding materials surface so the binding material can be pulled from the roll and fed into the baling chamber 60. The binding material follows a path 118 from the circumference of the binding material roll over the guiding rollers 112, between the plastic grouping system 114, through the binding systems feeding rollers and cutting mechanism and in-to the baling chamber 60.

(32) FIG. 6 shows a schematic representation of the binding apparatus, wherein the braking mechanism is shown, within the braking mechanism the stretch roller locates in the binding completion position. The primary braking apparatus is removed from the stretching roller locates, the roll of binding material 117 is in position and the primary braking mechanism 121 is lifted from the braking roller so the binding material can be cut by the binding unit 31 knife unit 115.

(33) FIG. 7 shows a schematic representation of the binding apparatus, wherein the braking mechanism is shown, within the primary braking apparatus 121 is removed from the braking roller and the secondary braking force 120 is removed by the lifting of the braking roller 119 from being in contact with the binding material 117.

(34) The features disclosed in this specification, the figures and/or the claims may be material for the realization of various embodiments, taken in isolation or in various combinations thereof.

REFERENCE LIST

(35) 10 Baling machine of the nonstop type 11 Bale 20 Prechamber 21 Feeding channel entering the prechamber 31 Binding apparatus 32 Roll of binding material 33 Binding material and binding material pathway 34 Tail end of the binding material on the bale's circumference 35 Feeding roller and binding material cutting mechanism 42 Crop pickup mechanism 43 Crop cutting device 44 Crop switching plate pivoting on the rear side of the crop cutting device, in this position guides crop to the main bale forming chamber 45 Crop channel for guiding crop into the main baling chamber 46 Crop switching plate pivoting on the rear side of the crop cutting device, in this position guides crop to the main bale forming chamber 47 Feeding mechanism 60 Main bale forming chamber with a full bale of material 100 Binding unit 102 Bale chamber rollers 103 Bale of material 111 Braking apparatus structure 112 Binding material guide rollers 113 Frame of binding unit 114 Binding apparatus grouping mechanism 115 Binding material cutting mechanism 116 Binding material entering bale chamber between roller and bale circumference 117 Roll of binding material 118 Path of binding material leaving from the roll of binding material 119 Stretch roller (Stretching/braking roller) 120 Secondary force applied to the braking roller 121 Braking roller braking mechanism 122 Primary force applied to braking roller mechanism 123 Primary force monitoring device 124 Connecting rod, connecting actuator to braking roller brake mechanism 125 Binding material feeding roller