An automatic rope clamping device for a square baler knotter

Abstract

The present invention discloses an automatic rope clamping device for a knotter of a square bale baler, which is arranged on the knotter and used for clamping and fixing the binding rope. The device comprises: a first frame, the middle part of the first frame is rotationally connected to the bale chamber of the knotter, one end of the first frame is provided with a clamping assembly for clamping the binding rope, and the other end of the first frame is set as an abutting rod; a second frame is provided with a torsion spring at the rotational position of the bale chamber, the other end side of the second frame is fixedly connected with an arc-shaped rod through an extension rod, the arc-shaped rod penetrates through the abutting rod and is adapted to the clamping assembly; a rope feeding part, which comprises a C-shaped rod, the C-shaped rod is fixedly connected with a tying needle, and a pushing assembly is arranged on one side of the top of the C-shaped rod, and the pushing assembly is adapted to the second frame. The present invention adds a rope clamping device to the original device, which is convenient for disassembly and replacement, and at the same time, concentrates the load received during the knotting process on the rope clamping device to reduce the load received by the knotting tongs, effectively improving the efficiency and service life of the knotter.

Description

Technical Field

[0001] The present invention relates to the technical field of bundling mechanical equipment, and in particular to an automatic rope clamping device for a knotter of a square bale baler. Background Art

[0002] Square bale balers have high production efficiency, and the pressed bales have high density, which are convenient for storage and transportation. They play an increasingly important role in reducing forage harvest losses, lowering storage and transportation costs, increasing commercialization rates, and enhancing industrial competitiveness, and strongly promote the rapid development of the grass and livestock industry and the comprehensive utilization of straw in China.

[0003] The knotter is a key component of the square bale baler. The reliability and service life of the knotter play a decisive role in the operating performance and operating cost of the square bale baler. During the knotting process, the tension of the binding rope is the main factor leading to the wear, fracture, and failure of the knotter parts. Therefore, effectively reducing the force of the binding rope on the knotting nozzle during the knotting process and effectively improving the stress conditions of key components such as the toothed disc and the frame body will significantly improve the reliability and service life of the knotter. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic rope clamping device for a knotter of a square bale baler to solve the problems existing in the prior art. By adding a rope clamping device, the present invention realizes clamping both ends of the binding rope before knotting by the knotter, so that the bale tension mainly acts on the rope clamping device, significantly reducing the pressure on the knotting pliers during knotting, fundamentally improving the stress conditions of vulnerable parts during the knotting process of the traditional knotter, and reducing the wear rate of the mating surfaces of the knotter. The rope clamping device adopted by the invention has the advantages of simple structure, convenient manufacturing and maintenance, overcomes the deficiencies of the traditional knotter such as large manufacturing difficulty of key components, easy wear and failure, and high use and maintenance costs, and is beneficial to comprehensively improving the reliability and service life of the knotter and reducing the operation and maintenance costs of the knotter.

[0005] To achieve the above object, the present invention provides the following solution: The present invention provides an automatic rope clamping device for a knotter of a square bale baler, which is arranged on the knotter and used for clamping and fixing the binding rope, and includes:

[0006] A first frame, the middle part of the first frame is rotationally connected to the bale chamber of the knotter, a torsion spring is arranged at the rotational position of the first frame and the bale chamber, the first frame is located at the top of the bale chamber, one end of the first frame is provided with a clamping assembly for clamping the binding rope, and the other end of the first frame is set as an abutting rod;

[0007] A second frame, one end of the second frame is rotatably connected to the side of the baling chamber, a torsion spring is arranged at the rotating position of the second frame and the baling chamber, an arc-shaped rod is fixedly connected to the side surface of the other end of the second frame through an extension rod, and the arc-shaped rod penetrates through the abutting rod and is adapted to the clamping assembly;

[0008] A rope feeding part, including a C-shaped rod, both ends of the C-shaped rod are respectively rotatably connected to two opposite side surfaces of the baling chamber, a tying needle is fixedly connected to the C-shaped rod, a pushing assembly is arranged on one side of the top of the C-shaped rod, and the pushing assembly is adapted to the second frame.

[0009] Preferably, the clamping assembly includes a clamping block, a rope inlet groove and a clamping groove are formed in the bottom surface of the clamping block, a bundling rope penetrates through the rope inlet groove, a clamping piece is arranged in the clamping groove, the clamping groove intersects with the rope inlet groove, a clamping hole is formed in the top of the clamping block, the clamping hole is arranged in a long strip structure, and one end of the arc-shaped rod penetrates through the clamping hole and abuts against the clamping piece.

[0010] Preferably, the clamping piece includes a clamping plate, the middle part of the clamping plate is rotatably connected to two opposite inner walls of the clamping groove, a torsion spring is arranged at the rotating position of the clamping plate and the clamping groove, one end of the clamping plate abuts against the bundling rope, and the other end of the clamping plate abuts against the arc-shaped rod.

[0011] Preferably, the pushing assembly includes a pushing rod, one end of the pushing rod is rotatably connected to the outer wall of the C-shaped rod, a pushing groove is formed in the side surface of the second frame, and the other end of the pushing rod abuts against the pushing groove.

[0012] Preferably, a roller is arranged at the end of the arc-shaped rod, and the roller abuts against the clamping plate.

[0013] Preferably, the width of the clamping plate is adapted to the width of the clamping groove, and two opposite side surfaces of the clamping plate are in sliding contact with two opposite inner walls of the clamping groove.

[0014] Preferably, a through hole is formed in the side surface of the abutting rod, and the arc-shaped rod penetrates through the through hole.

[0015] Preferably, the tying needle, the first frame and the arc-shaped rod are located in the same plane.

[0016] The present invention discloses the following technical effects: By adding a rope clamping device, the present invention realizes clamping of both ends of the binding rope before knotting by the knotter, so that the tension of the bale mainly acts on the rope clamping device, significantly reducing the pressure on the knotting jaws during knotting, fundamentally improving the stress condition of the vulnerable parts during the knotting process of the traditional knotter, and reducing the wear rate of the mating surface of the knotter. The rope clamping device adopted by the invention has the advantages of simple structure, convenient manufacturing and maintenance, overcomes the deficiencies of the traditional knotter such as large manufacturing difficulty of key parts, easy wear and failure, and high use and maintenance costs, and is beneficial to comprehensively improving the reliability and service life of the knotter and reducing the operation and maintenance costs of the knotter. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of the initial state of the present invention;

[0019] Figure 2 is a schematic diagram of the binding needle moving to the dead center of the stroke in the present invention;

[0020] Figure 3 is a schematic structural diagram of the first frame in the present invention;

[0021] Figure 4 is a schematic structural diagram of the second frame in the present invention;

[0022] Figure 5 is a schematic structural diagram of the clamping assembly in the present invention;

[0023] Figure 6 is a schematic structural diagram of the clip in the present invention;

[0024] Figure 7 is a sectional view of the clip in the present invention;

[0025] Figure 8 is Figure 2 a partial enlarged view of A1 in;

[0026] Among them, 1, binding rope; 2, bale chamber; 3, abutting rod; 4, second frame; 5, extension rod; 6, arc rod; 7, C-shaped rod; 8, binding needle; 9, clamping block; 10, rope inlet groove; 11, clamping groove; 12, clip; 13, push rod; 14, push groove; 15, rope deflecting plate; 16, rope releasing rod; 17, knotting jaws; 18, rope clamp. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] To make the above objects, features, and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Referring to Figures 1-8 , the present invention provides an automatic rope clamping device for a square bale knotter, which is arranged on the knotter and used for clamping and fixing the binding rope 1, and includes:

[0030] The first frame, the middle part of the first frame is rotationally connected to the bale chamber 2 of the knotter, a torsion spring is arranged at the rotational position of the first frame and the bale chamber 2, the first frame is located at the top of the bale chamber 2, one end of the first frame is provided with a clamping assembly for clamping the binding rope 1, and the other end of the first frame is set as an abutting rod 3;

[0031] The second frame 4, one end of the second frame 4 is rotationally connected to the side surface of the bale chamber 2, a torsion spring is arranged at the rotational position of the second frame 4 and the bale chamber 2, and an arc-shaped rod 6 is fixedly connected to the other end side surface of the second frame 4 through an extension rod 5. The arc-shaped rod 6 penetrates through the abutting rod 3 and is adapted to the clamping assembly;

[0032] The rope feeding part, including a C-shaped rod 7, both ends of the C-shaped rod 7 are rotationally connected to two opposite side surfaces of the bale chamber 2, a tying needle 8 is fixedly connected to the C-shaped rod 7, and a pushing assembly is arranged on one side of the top of the C-shaped rod 7. The pushing assembly is adapted to the second frame 4.

[0033] The present invention can clamp the binding rope 1 before the knotter knots. By adding a rope clamping device to the original device, the load during the knotting process is concentrated on the rope clamping device, so as to reduce the load on the knotting jaws 17, effectively improving the efficiency and service life of the knotter. By adding a rope clamping device, the present invention realizes clamping both ends of the binding rope 1 before the knotter knots, so that the bale tension mainly acts on the rope clamping device, significantly reducing the pressure on the knotting jaws 17 during knotting, fundamentally improving the stress condition of the vulnerable parts in the traditional knotting process, and reducing the wear rate of the mating surfaces of the knotter. The rope clamping device adopted by the invention has the advantages of simple structure, convenient manufacturing and maintenance, overcomes the deficiencies of the traditional knotter such as large manufacturing difficulty of key parts, easy wear and failure, and high use and maintenance costs, and is conducive to comprehensively improving the reliability and service life of the knotter and reducing the operation and maintenance costs of the knotter.

[0034] The provided C-shaped rod 7 is driven by the drive mechanism of the knotter, and the tying needle 8 is a prior art. A needle hole is provided at the top thereof for the tying rope 1 to pass through and drive the tying rope 1 to displace.

[0035] In a further optimized solution, the clamping assembly includes a clamping block 9. A rope inlet groove 10 and a clamping groove 11 are provided on the bottom surface of the clamping block 9. The tying rope 1 is disposed through the rope inlet groove 10. A clamping member is disposed in the clamping groove 11. The clamping groove 11 intersects with the rope inlet groove 10. A clamping hole is provided at the top of the clamping block 9. The clamping hole is set as a long strip structure. One end of the arc-shaped rod 6 passes through the clamping hole and abuts against the clamping member.

[0036] When the tying needle 8 moves to the dead center of the stroke, it pushes the first rack to rotate, and feeds the tying rope 1 into the rope inlet groove 10. At the same time, the pushing rod 13 also rotates along with the movement of the tying needle 8 and presses the clamping piece 12, clamping the tying rope 1 before the rope winding of the knotter. The clamping piece 12 starts to rotate under the push of the arc-shaped rod 6, driving the tying rope 1 stuck in the rope inlet groove 10 to move upward and clamping the tying rope 1 between the inner wall of the clamping groove 11 and the clamping piece 12, completing the rope clamping. When the tying needle 8 returns, the first rack and the second rack 4 have no driving force and slowly return under the action of the torsion spring. When the knotter completes knotting, the clamping piece 12 also returns under the action of the torsion spring and resets before the start of the next action. The present invention is detachable from the knotter main body and is closely connected with the components of the knotter in terms of timing sequence. It clamps the tying rope 1 between the rope feeding and rope releasing of the knotter, concentrating the force on the clamping piece 12 which is easy to replace instead of the original knotting jaw 17, reducing the pressure on the surface of the knotting jaw 17 and extending the service life of the knotter. At the same time, the present invention has a simple structure and stable performance, and can be adapted to the components of the D-type knotter.

[0037] In a further optimized solution, the clamping member includes a clamping piece 12. The middle part of the clamping piece 12 is rotationally connected to two opposite inner walls of the clamping groove 11. A torsion spring is provided at the rotational position of the clamping piece 12 and the clamping groove 11. One end of the clamping piece 12 abuts against the tying rope 1, and the other end of the clamping piece 12 abuts against the arc-shaped rod 6.

[0038] When the arc-shaped rod 6 pushes the clamping piece 12 to rotate, the torsion spring is in a compressed state. When the second rack 4 returns, the clamping piece 12 starts to return under the action of the torsion spring. The thickness of the clamping piece 12 is close to the width of the two clamping grooves 11 and can accommodate a distance of the diameters of two tying ropes 1.

[0039] In a further optimized solution, the pushing assembly includes a pushing rod 13. One end of the pushing rod 13 is rotationally connected to the outer wall of the C-shaped rod 7. A pushing groove 14 is provided on the side surface of the second rack 4. The other end of the pushing rod 13 abuts against the pushing groove 14.

[0040] The provided push rod 13 is rotatably connected to the C-shaped rod 7 by a pin, and its rotation angle is limited, and it can only rotate within a small range of angles. The specific rotation angle is 5° - 15°.

[0041] In a further optimized solution, a roller is provided at the end of the arc-shaped rod 6, and the roller abuts against the clamping piece 12.

[0042] The roller (not marked in the figure) provided at the end of the arc-shaped rod 6 can reduce the wear generated during the contact with the clamping piece 12.

[0043] In a further optimized solution, the width of the clamping piece 12 is adapted to the width of the clamping groove 11, and the two opposite side surfaces of the clamping piece 12 are in sliding contact with the two opposite inner walls of the clamping groove 11.

[0044] The shape of the clamping piece 12 is hook-shaped, and its thickness is close to the width of the clamping groove 11 to ensure that the binding rope 1 can be clamped tightly.

[0045] In a further optimized solution, a through hole is provided on the side surface of the abutting rod 3, and the arc-shaped rod 6 passes through the through hole.

[0046] In a further optimized solution, the tying needle 8, the first frame and the arc-shaped rod 6 are located in the same plane.

[0047] The working principle of the present invention:

[0048] The initial state is as Figure 1As shown in the figure, when tying a knot, first, the tying needle 8 sends the tying rope 1 above the knotting jaw 17 during the process of feeding the rope. The rope deflecting plate 15 deflects the tying rope 1 to make it closely adhere to the surface of the knotting jaw 17. Then, the tying needle 8 continues to move above the rope clamping device 18 to clamp the tying rope 1. After that, the tying needle 8 continues to rotate until it touches the front end of the first frame and pushes the first frame to rotate, and the clamping component at the end of the first frame also rotates accordingly. During the movement of the tying needle 8, the push rod 13 connected to the tying needle 8 also rotates together. When the tying needle 8 moves to the dead center of the stroke, it pushes the first frame to rotate. At this time, the clamping component also descends to the maximum position, and the rope inlet groove 10 at its end is parallel to the tying rope 1. The tying rope 1 is fed into the rope inlet groove 10. The initial position of the tying rope 1 is above the clamping piece 12. The push rod 13 is adapted to the push groove 14 and pushes the second frame 4 to rotate while pressing the clamping piece 12. The clamping piece 12 rotates clockwise under the push of the arc-shaped rod 6. When the clamping piece 12 contacts the tying rope 1, the clamping piece 12 deflects the tying rope 1 to move upward, so that the fed tying rope 1 is clamped between the clamping piece 12 and the clamping groove 11 to clamp the tying rope 1, and the tying rope 1 is in a clamped state. After the tying needle 8 moves to the dead center of the stroke, it starts to return. Without the driving force, the first frame slowly returns under the action of the torsion spring. At this time, the position of the clamping piece 12 remains unchanged. When the knotter finishes tying the knot and the rope releasing rod 16 is ready to release the buckle, the second frame 4 also returns under the action of the torsion spring. Without the driving force, the clamping piece 12 quickly resets under the action of the torsion spring, driving the clamping piece 12 to rotate back to its original position. The tying rope 1 originally squeezed between the clamping piece 12 and the clamping groove 11 is driven by the clamping piece 12 to break away and return to its original position. At this time, both the second frame 4 and the clamping piece 12 have returned to their original positions, preparing for the next cycle of knotting.

[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0050] The above-described embodiments are only descriptions of the preferred embodiments of the present invention, and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention.

Claims

1. An automatic rope clamping device for a knotter of a square bale baler, which is arranged on the knotter and used for clamping and fixing a binding rope (1). Characterized in that: It includes: A first frame, the middle part of the first frame is rotationally connected to the bale chamber (2) of the knotter, a torsion spring is arranged at the rotational position between the first frame and the bale chamber (2), the first frame is located at the top of the bale chamber (2), one end of the first frame is provided with a clamping assembly for clamping the binding rope (1), and the other end of the first frame is set as an abutting rod (3); A second frame (4), one end of the second frame (4) is rotationally connected to the side surface of the bale chamber (2), a torsion spring is arranged at the rotational position between the second frame (4) and the bale chamber (2), the other end side of the second frame (4) is fixedly connected with an arc-shaped rod (6) through an extension rod (5), the arc-shaped rod (6) penetrates through the abutting rod (3) and is adapted to the clamping assembly; A rope feeding part, including a C-shaped rod (7), both ends of the C-shaped rod (7) are rotationally connected to two opposite side surfaces of the bale chamber (2), a tying needle (8) is fixedly connected to the C-shaped rod (7), a pushing assembly is arranged on one side of the top of the C-shaped rod (7), and the pushing assembly is adapted to the second frame (4); The clamping assembly includes a clamping block (9), a rope inlet groove (10) and a clamping groove (11) are arranged on the bottom surface of the clamping block (9), the binding rope (1) penetrates through the rope inlet groove (10), a clamping piece is arranged in the clamping groove (11), the clamping groove (11) intersects with the rope inlet groove (10), a clamping hole is arranged on the top of the clamping block (9), the clamping hole is set as a long-strip structure, and one end of the arc-shaped rod (6) penetrates through the clamping hole and abuts against the clamping piece; The pushing assembly includes a pushing rod (13), one end of the pushing rod (13) is rotationally connected to the outer wall of the C-shaped rod (7), a pushing groove (14) is arranged on the side surface of the second frame (4), and the other end of the pushing rod (13) abuts against the pushing groove (14).

2. An automatic rope clamping device for a knotter of a square bale baler according to claim 1, Characterized in that: The clamping piece includes a clamping piece (12), the middle part of the clamping piece (12) is rotationally connected to two opposite inner walls of the clamping groove (11), a torsion spring is arranged at the rotational position between the clamping piece (12) and the clamping groove (11), one end of the clamping piece (12) abuts against the binding rope (1), and the other end of the clamping piece (12) abuts against the arc-shaped rod (6).

3. An automatic rope clamping device for a knotter of a square bale baler according to claim 2, Characterized in that: A roller is arranged at the end of the arc-shaped rod (6), and the roller abuts against the clamping piece (12).

4. An automatic rope clamping device for a knotter of a square bale baler according to claim 3, Characterized in that: The width of the clamping piece (12) is adapted to the width of the clamping groove (11), and two opposite side surfaces of the clamping piece (12) are in sliding contact with two opposite inner walls of the clamping groove (11).

5. An automatic rope clamping device for a square bale knotter according to claim 4, characterized in that: A through hole is formed in the side surface of the abutting rod (3), and the arc-shaped rod (6) penetrates through the through hole.

6. An automatic rope clamping device for a square bale knotter according to claim 5, characterized in that: The tying needle (8), the first frame and the arc-shaped rod (6) are located on the same plane.

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