Wire feeding and knotting device of square bale collecting and bundling machine

Abstract

The invention relates to the technical field of pasture processing equipment, in particular to a wire feeding and knotting device of a square bale collecting machine. Comprising a knotter assembly, a driving assembly and a large needle assembly, the knotter comprises a gear ring, an eagle beak, a rope clamping disc and a cutter arm, the main shaft is installed on a machine frame of the square bale collecting machine, and the main shaft is connected with the driving assembly; the large needle assembly comprises large needles and a U-shaped frame, the multiple large needles are installed on a cross beam of the U-shaped frame, and supporting legs of the U-shaped frame are installed on a rack of the straw bundle collecting and bundling machine and connected with the driving assembly through a rocker arm. The driving assembly drives the main shaft to rotate and drives the large needle to rotate towards the knotter through the rocker arm, the large needle drives the knotting rope to penetrate through the rope clamping disc, the gear ring and the eagle beak, and the rope clamping disc is matched with the tool arm to act to complete knotting operation. Needle threading and knotting actions are ensured to be strictly synchronous, a large needle assembly is ensured to accurately deliver a rope, and a knotter quickly completes knotting; and the knotting quality is high, and the knotted rope fastener is firm, reliable and free of loosening.

Description

Technical Field

[0001] The invention relates to the technical field of forage processing equipment, in particular to a wire feeding and knotting device of a square grass bale baler. Background Art

[0002] At present, there are many types of bales, including small square bales, large square bales, and large round bales. Small square bales are suitable for small plots, large square bales are suitable for large areas, and are convenient for users to collect and transport. Large round bales are limited in transportation and are not suitable for long-distance transportation. Small square bales are about 30-40 cm (width) × 40-50 cm (height) × 70-100 cm (length), and the weight of a single bale is usually 15-30 kg. The size of a large square bale is usually 1.1-2.2 meters long, 1.15 meters wide, and 0.8 meters high, and the weight of a single bale is usually 500-800 kg. At present, the large square bale baler on the market is towed by a tractor, which can complete the automatic picking, chopping, pre-pressing, feeding, compression, and bundling of materials such as grass and straw at one time. It has the advantages of high degree of automation, efficient operation, regular bale shape, tight bundling, and convenient storage and transportation. However, the price is expensive, generally between 1.38 million and 1.58 million, and a manufacturer's tractor needs to be purchased, which is also priced at 1 million, with a total price of more than 2 million. The cost is too high for the majority of domestic farmers, and the subsequent maintenance costs are also too high. Due to its high investment and long payback period, it has not been promoted and used in China. Small square bundles are generally used in China, and they are picked up, stacked, and bundled manually. Not only is the operating efficiency low, but as the people willing to work in this industry gradually age, there is a labor shortage, and labor costs increase year by year.

[0003] The square bale baler can collect, squeeze and bundle small square bales, and turn small square bales into large square bales. With the help of grab buckets and lifting equipment, large square bales can be directly transported to a flatbed truck for easy transportation. Only one person is needed to complete the picking and baling operation, and the cost is much lower than that of a large square bale baler. At present, domestic two-way rope balers have formed large-scale production, and the general price after enjoying agricultural subsidies is about 100,000. The market share is large, and only a square bale baler is needed to pick up, squeeze and bundle small square bales into large square bales. There is no need to purchase a high-horsepower tractor separately. A two-way rope tractor can be used, saving the cost of purchasing a tractor, saving manual picking time, and improving efficiency.

[0004] To turn a small square bale into a large square bale, it is necessary to use a knotted rope to tie N bundles of small square bales together and tie the knotted rope into a buckle through a knotter, a large needle assembly, etc. Therefore, it is a technical problem to be solved in this field to develop a wire feeding and knotting device suitable for a square grass bale baler to ensure that the knotted rope buckle is firm and reliable and does not fall apart. The starting wire feeding of the large needle assembly and the return time and beat of the large needle after knotting must match and be consistent with the starting, rope clamping, knotting, and rope cutting movements of the knotter. Summary of the invention

[0005] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides a wire feeding and knotting device for a square grass bale baler, which is suitable for the square grass bale baler, ensures that the needle threading and knotting actions are strictly synchronized, ensures that the large needle assembly delivers the rope accurately, and the knotter completes the knotting quickly; and the rope knot is of high quality, and the knotted rope buckle is firm and reliable without loose buckles.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A wire feeding and knotting device for a square grass bale baler comprises a knotter assembly, a driving assembly and a large needle assembly; the knotter assembly comprises a main shaft and a plurality of knotters mounted on the main shaft, the knotter comprises a gear ring, an eagle's beak, a rope clamping disc and a knife arm, the main shaft is mounted on a frame of the square grass bale baler, and the main shaft is connected to the driving assembly; the large needle assembly comprises a large needle and a C-shaped frame, a plurality of large needles are mounted on the crossbeam of the C-shaped frame, the legs of the C-shaped frame are mounted on the frame of the square grass bale baler, and the legs of the C-shaped frame are connected to the driving assembly through a rocker arm; the driving assembly drives the main shaft to rotate and drives the large needle to rotate toward the knotter through the rocker arm, the large needle carries the knotting rope through the rope clamping disc, and the gear ring, the eagle's beak, the rope clamping disc and the knife arm cooperate to complete the knotting operation.

[0008] Furthermore, the knotter includes a gear ring, a worm gear shaft, a frame, a rope clamping piece, a rope cleaning piece, a rope clamping disc, a beak and a knife arm; the gear ring is installed on the main shaft and rotates with the main shaft, the worm gear shaft is installed on the frame, and the worm wheel of the worm gear shaft is meshed with the inner teeth of the gear ring; the rope clamping disc is provided with a rope clamping disc gear, the rope clamping disc gear is meshed with the worm wheel of the worm gear shaft, and the rope cleaning piece is installed on the rotating shaft of the rope clamping disc; the rope clamping piece is hinged on the frame and located at the rope clamping disc; the beak is provided with a beak beak gear, and the beak beak gear is meshed with the outer teeth of the gear ring; the knife arm is hinged on the frame, the knife arm is connected to the gear ring, and the knife arm is provided with a cutting knife.

[0009] Furthermore, when tying a knot, the driving assembly drives the large needle and the main shaft of the knotter to move, and the large needle sends a strand of rope to the eagle's beak of the knotter and passes through the rope clamping disk; the rotation of the main shaft drives the gear ring to move, and when the outer teeth of the gear ring mesh with the bevel gear of the eagle's beak, the beak begins to rotate and entangles the two strands of rope. After the beak rotates to a certain angle, the upper lip begins to open and gradually forms a knotting circle; during this period, the large needle also begins to return, and the inner teeth of the gear ring mesh with the bevel gear of the worm gear shaft and drive the shaft to rotate, and the worm gear of the shaft meshes with the rope clamping disk gear, thereby driving the rope clamping disk to rotate 90° and clamp the knotted rope returned by the large needle in the rope clamping disk through the rope clamping piece, It is the end point of the knotted rope for the next knotting; when the eagle's beak rotates to the initial position, the upper lip bites the double-strand knotted rope and the large needle returns to the back of the knife arm, the knife arm starts to move under the drive of the gear ring cam groove to disengage the rope loop and the eagle's beak from the rope loop on the eagle's beak, and forms a relative movement with the knotted rope bitten by the eagle's beak to complete the knotting operation; while the knife arm completes the rope-detaching operation, the cutting knife on the knife arm cuts the knotted rope between the rope buckle and the rope clamping disk, one of which serves as the end point for the next knotting, and the other falls to the ground under the action of the rope cleaning piece; after knotting is completed, each component returns to the initial position and is ready for the next knotting.

[0010] Furthermore, the gear ring and the frame are installed on the main shaft, the gear ring rotates with the main shaft, and the frame is fixed to the frame by bolt connection.

[0011] Furthermore, the drive assembly includes a motor, a driving sprocket and a driven sprocket; the driven sprocket is installed on the main shaft, the driving sprocket and the driven sprocket are connected by a chain, the driving sprocket is connected to the motor, and the motor drives the driving sprocket and the driven sprocket to rotate synchronously.

[0012] Furthermore, shaft sleeves are provided at both ends of the rocker arm, the shaft sleeve at one end is sleeved on the main shaft, and the shaft sleeve at the other end is sleeved on the U-shaped frame.

[0013] Furthermore, a first connecting shaft is provided at the top of the leg of the large needle assembly U-shaped frame, a second connecting shaft is provided at the upper part of the leg, the shaft sleeve of the rocker arm is sleeved on the second connecting shaft, and the first connecting shaft is installed on the bearing seat on the frame of the square grass bale baler.

[0014] Furthermore, the large needle comprises a needle body, a lower seat and an upper seat, the needle body is fixedly connected to the lower seat, and the lower seat and the upper seat are fixedly connected to the crossbeam of the U-shaped frame by bolts.

[0015] Furthermore, the knotter assembly also includes a plurality of bearing seats, a plurality of bearings are mounted on the main shaft, the bearings are mounted in the bearing seats, and the bearing seats are fixedly connected to the frame of the square hay bale baler.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention includes a knotter assembly, a drive assembly and a large needle assembly. The knotter assembly and the large needle assembly are synchronously driven by the drive assembly. The drive assembly drives the main shaft to rotate and drives the large needle to rotate toward the knotter through the rocker arm. The large needle carries the knotted rope through the rope clamping disk. The gear ring, the eagle beak, the rope clamping disk and the knife arm cooperate to complete the knotting operation. In this way, the starting and feeding of the large needle assembly and the return time and beat of the large needle after knotting are matched and consistent with the starting, rope clamping, knotting, and rope cutting movements of the knotter. Ensure that the needle threading and knotting actions are strictly synchronized, ensure that the large needle assembly delivers the rope accurately, and the knotter quickly completes the knotting; and the knot quality is high, and the knotted rope buckle is firm, reliable, and does not fall apart.

[0018] 2. The knotter of the present invention includes a gear ring, a worm shaft, a frame, a rope clamping piece, a rope cleaning piece, a rope clamping disc, a beak and a knife arm; when the large needle passes through the rope clamping disc, the rope clamping disc clamps the knotted rope, the beak begins to wrap around the two knotted ropes, and finally the beak bites the knotted rope, and at the same time the large needle begins to make a return movement; when returning, the knotted rope is clamped by the rope clamping disc to prepare for the next knotting; when the large needle leaves the knotter, the knife arm starts to move to separate the rope buckle from the beak, the beak performs knotting, and at the same time the blade on the knife arm cuts the two ropes to complete the knotting. The structure of the knotter is simplified, which is convenient for processing, assembly and maintenance. The coordination rate of each component is high, the knotting efficiency is high, the knotting quality is high, the ability of synchronous operation of multiple knotting points is strong, the knotting success rate is high, and it has higher reliability, stronger adaptability and lower overall cost.

[0019] 3. The large needle of the present invention comprises a needle body, a lower seat and an upper seat, the needle body is fixed to the lower seat, and the lower seat and the upper seat are fixed to the crossbeam of the U-shaped frame by bolts. The large needle is detachably mounted on the crossbeam of the U-shaped frame, which is convenient for assembly and maintenance.

[0020] 4. The knotter assembly of the present invention is installed on the frame of the square grass bale baler through a plurality of bearing seats, thereby ensuring smooth operation.

[0021] 5. Both ends of the rocker arm of the present invention are provided with shaft sleeves, one end of the shaft sleeve is sleeved on the main shaft, and the other end of the shaft sleeve is sleeved on the U-shaped frame. This further strengthens the coordination of the movement of the knotter assembly and the large needle assembly, and facilitates assembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the knotter assembly structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the three-dimensional structure of the knotter of the present invention.

[0025] Figure 4 It is a schematic diagram of the three-dimensional structure of the knotter of the present invention from another angle.

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the gear ring of the present invention.

[0027] Figure 6 It is a schematic diagram of the three-dimensional structure of the frame of the present invention.

[0028] Figure 7 It is a schematic diagram of the three-dimensional structure of the knife arm of the present invention.

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the hawk's beak of the present invention.

[0030] Fig. 9 It is a schematic diagram of the three-dimensional structure of the rope clamping disc of the present invention.

[0031] Fig.10 It is a schematic diagram of the three-dimensional structure of the rope clamping piece of the present invention.

[0032] Fig.11 It is a schematic diagram of the three-dimensional structure of the worm gear shaft of the present invention.

[0033] Fig.12 It is a schematic diagram of the structure of the rope cleaning piece of the present invention.

[0034] Fig.13 It is a schematic diagram of the three-dimensional structure of the large needle assembly of the present invention.

[0035] Fig.14 It is a side view of the installation of the present invention.

[0036] Fig.15 Install the main view for the present invention.

[0037] Markings in the figure: 1. knotter assembly; 2. drive assembly; 3. large needle assembly; 4. rocker arm; 5. connecting seat; 11. main shaft; 12. bearing seat; 13. gear ring; 14. worm gear shaft; 15. frame; 16. rope clamping piece; 17. rope cleaning piece; 18. rope clamping disc; 19. eagle beak; 110. knife arm; 111. shaft sleeve body; 21. motor; 22. driving sprocket; 23. driven sprocket; 24. chain; 25. tensioner; 31. support leg; 32. crossbeam; 33. first connecting shaft; 34. second connecting shaft; 35. needle body; 36. lower seat; 37. upper seat. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the description of the present invention, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0042] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0043] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0044] like Figure 1-15 As shown, a wire feeding and knotting device of a square grass bale baler comprises a knotter assembly 1, a drive assembly 2 and a large needle assembly 3.

[0045] like Figure 2-12 As shown, the knotter assembly 1 includes a main shaft 11 and a plurality of knotters mounted on the main shaft 11. In this embodiment, there are four knotters. The knotter assembly 1 also includes a plurality of bearing seats 12. In this embodiment, there are four bearing seats 12. Four bearings are mounted on the main shaft 11. The bearings are mounted in the bearing seats 12. The bearing seats 12 are fixed to the frame of the square hay baler. The main shaft 11 is mounted on the frame of the square hay baler through the bearing seats 12, which ensures the smooth operation of the entire device.

[0046] The knotter includes a gear ring 13 , a worm shaft 14 , a frame 15 , a rope clamping piece 16 , a rope cleaning piece 17 , a rope clamping disc 18 , a beak 19 and a knife arm 110 .

[0047] The frame 15 is provided with a sleeve body 111, the ring gear 13 is installed on the main shaft and connected to the end of the sleeve body 111, the sleeve body 111 is sleeved on the main shaft 11, and then the knotter is installed on the main shaft 11. The ring gear 13 is installed on the main shaft, and the worm gear shaft 14 is installed on the frame 15. One end of the worm gear shaft 14 is provided with a bevel gear, and the other end is provided with a worm wheel. The bevel gear of the worm gear shaft 14 is meshed with the ring gear 13. The rope clamping disc 18 is provided with a rope clamping disc gear, and the rope clamping disc gear is meshed with the worm wheel of the worm gear shaft.

[0048] The rope cleaning piece 17 is installed on the rotating shaft of the rope clamping disc 18. The rope clamping piece 10 is hinged on the frame 15 and is located at the rope clamping disc 18. The eagle beak 19 is provided with an eagle beak bevel gear, which meshes with the ring gear 13. The knife arm 110 is hinged on the frame 15, the knife arm 110 is connected to the ring gear 13, and the knife arm 110 is provided with a cutting knife.

[0049] The gear ring 13 synchronizes the knotting action to ensure that the various components of the knotter (such as the beak 19, the rope clamping disc 18, the rope cleaning piece 17, the knife arm 110, etc.) are strictly coordinated in sequence to avoid misalignment of the action and knotting failure. The beak 19 is used to clamp the rope head and cooperate with the large needle assembly 3 to complete the formation of the knot. It opens and closes during the knotting process to ensure that the knot is firm and does not loosen. The rope clamping disc 18 and the rope clamping piece 16 fix the rope during the knotting process to prevent it from loosening, and work together with the beak 19 to ensure that the knot is tight. After the knot is tied, the excess rope is cut off to keep the rope heads of the same length to avoid entanglement. After the knot is tied, the cutter will cut the rope, but a small amount of rope heads may be left on the rope clamping disc 18. The rope cleaning piece 17 removes these residual rope heads from the rope clamping disc through mechanical scraping action to prevent them from interfering with the next knotting.

[0050] When the big needle passes through the rope clamping disc 18 and returns, the rope clamping disc 18 clamps the knotted rope, and the eagle's beak 19 starts to wrap around the two knotted ropes, and finally the eagle's beak 19 bites the knotted rope, and the big needle starts to make a returning movement at the same time; when returning, the knotted rope is clamped by the rope clamping disc 18, preparing for the next knotting; when the big needle leaves the knotter, the knife arm 110 starts to move to separate the rope buckle from the eagle's beak 19, and the eagle's beak 19 performs knotting, and at the same time the cutting knife on the knife arm 110 cuts the two ropes to complete the knotting.

[0051] When tying a knot, the driving assembly 2 drives the large needle and the main shaft of the knotter to move, and the large needle sends a strand of rope to the eagle's beak 19 of the knotter and passes through the rope clamping disk 18; the rotation of the main shaft 11 drives the gear ring 13 to move, and when the outer teeth of the gear ring mesh with the bevel gear of the beak, the beak 19 starts to rotate and entangle the two strands of rope. After the beak 19 rotates to a certain angle, the upper lip begins to open and gradually forms a knotting circle; during this period, the large needle also starts to return, and the inner teeth of the gear ring mesh with the bevel gear in the worm shaft and drive the shaft to rotate, and the meshing of the worm wheel in the shaft with the rope clamping disk drives the rope clamping disk to rotate 90° and clamp the knotted rope returned by the large needle in the rope clamping disk through the rope clamping piece, which serves as the lower The end point of the knotted rope when tying a knot for the first time; when the eagle's beak 19 rotates to the initial position, the upper lip bites the double-strand knotted rope and the large needle returns to the back of the knife arm, the knife arm 110 starts to move under the drive of the gear ring cam groove to disengage the rope loop and the eagle's beak from the rope loop on the eagle's beak, and forms a relative movement with the knotted rope bitten by the eagle's beak to complete the knotting operation; while the knife arm 110 completes the rope-detaching operation, the cutting knife on the knife arm cuts the knotted rope between the rope buckle and the rope clamping disk 18, one of which serves as the end point for the next knotting, and the other falls to the ground under the action of the rope cleaning piece 17; after the knotting is completed, each component returns to the initial position and is ready for the next knotting.

[0052] like Fig.14 , Fig.15 As shown, the drive assembly 2 includes a motor 21, a driving sprocket 22 and a driven sprocket 23; the driven sprocket 23 is installed on the main shaft 11, the driving sprocket 22 and the driven sprocket 23 are connected by a chain 24, the driving sprocket 22 is installed on the output shaft of the motor 21, and the motor 21 drives the driving sprocket 22 and the driven sprocket 23 and the main shaft 11 to rotate synchronously, driving the rocker arm 4 to move.

[0053] Both ends of the rocker arm 4 are provided with shaft sleeves, the shaft sleeve at the top is sleeved on the connecting seat 5, and the connecting seat 5 is installed on the main shaft 11; the shaft sleeve at the bottom is sleeved on the U-shaped frame of the large needle assembly 3. The coordination of the movement of the knotter assembly and the large needle assembly is further strengthened, and it is easy to assemble and maintain.

[0054] like Fig.13 As shown, the large needle assembly 3 includes a large needle and a U-shaped frame, which is composed of two mutually parallel legs 31 and a crossbeam 32 fixed between the two legs 31, and the crossbeam 32 is vertically fixed to the bottom of the legs 31. A first connecting shaft 33 is provided at the top of the legs, and a second connecting shaft 34 is provided at the upper part of the legs. The shaft sleeve of the rocker arm 4 is sleeved on the second connecting shaft 34, and the first connecting shaft 33 is installed on the bearing seat on the frame of the square grass bale baler.

[0055] A plurality of large needles are mounted on the crossbeam 32 of the C-shaped frame. In this embodiment, there are 4 large needles in total, and the large needles correspond to the knotters one by one. The legs 31 of the C-shaped frame are hinged on the frame of the bale baler. The legs of the C-shaped frame are connected to the main shaft 11 through the rocker arm 4 and the connecting seat 5. The motor 21 drives the main shaft 11 to rotate, thereby driving the C-shaped frame to shake up and down.

[0056] The large needle includes a needle body 35, a lower seat 36 and an upper seat 37. The needle body 35 is fixed to the bottom of the lower seat 36. The lower seat 36 and the upper seat 37 are both provided with semicircular grooves corresponding to the cross beam 32. The lower seat 36 and the upper seat 37 are clamped on the cross beam 32 through the semicircular grooves and connected by bolts. The large needle is detachably mounted on the cross beam 32 of the U-shaped frame, which is convenient for assembly and maintenance.

[0057] The working principle and working process of the present invention are as follows:

[0058] 1. Introduction to the formation of large square bundles:

[0059] The big square bale is made of N small square bales bundled and tied in the bale bin. There are N / 2 layers of big square bales, that is, 2 small square bales in each layer. When the 2 small square bales of the first layer are pushed into the lifting platform under the bale bin, they are lifted to a certain height and make room after receiving the signal feedback; the 2 small square bales of the second layer are further pushed into the lifting platform, and after receiving the signal feedback, the first layer of bales falls down, and the second layer of bales is lifted to a certain height together with the first layer of bales to make room; ... Repeatedly, until the bale bin reaches N full bales, and then prepare to send wires and tie knots.

[0060] 2. Preliminary conditions for bundle tying:

[0061] When the small square bales in the bale box are full of grass, they are lifted to a certain height in the bale box. When the top bale touches the full grass sensor on the bale bin and the bale is squeezed to a set pressure, the motor 21 starts to rotate to drive the large needle and knotter to feed the wire and tie the knot.

[0062] 3. Working principle of wire feeding and knotting mechanism:

[0063] When knotting is in progress, the motor 21 rotates to drive the driving sprocket 22 to work, and drives the driven sprocket 23 to rotate through the chain 24. The tension of the chain 24 is adjusted by the tensioner 25. The driven sprocket 23 drives the main shaft 11 and the ring gear 13 of the knotter to rotate, and drives the large needle to rotate in the direction of the knotter through the connecting seat 5 and the rocker arm 4.

[0064] The large needle moves with the knotted rope toward the knotter. When the large needle passes through the rope clamping disk 18 of the knotter and clamps the knotted rope, the beak 19 in the knotter begins to wrap around the two strands of the knotted rope, and finally the beak 19 bites the knotted rope, and the large needle begins to return. When returning, the knotted rope is clamped by the rope clamping disk 18, preparing for the next knotting. When the large needle leaves the knotter, the knife arm 110 starts to move to separate the rope buckle from the beak 19, and the beak 19 performs knotting. At the same time, the cutter on the knife arm 110 cuts the two strands of rope and completely separates them from the knotted rope on the big bag, and this knotting is completed.

[0065] The present invention is applicable to square grass bale balers, ensuring that the start-up wire feeding of the large needle assembly and the return time and rhythm of the large needle after knotting are matched and consistent with the start-up, rope clamping, knotting, and rope cutting movements of the knotter. Ensure that the needle threading and knotting actions are strictly synchronized, ensure that the large needle assembly delivers the rope accurately, and the knotter quickly completes the knotting; and the knot quality is high, and the knotted rope buckle is firm, reliable, and does not fall apart. The knotter structure of the present invention is simplified, which is convenient for processing, assembly, and maintenance. The coordination rate of each component is high, the knotting efficiency is high, and the knot quality is high. The synchronous operation capability of multiple knotting points is strong, the knotting success rate is high, and it has higher reliability, stronger adaptability, and lower overall cost.

[0066] The above descriptions are only some specific implementation methods of the present invention, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A wire feeding and knotting device for a square straw bale baler, characterized in that: It includes a knotter assembly, a drive assembly and a large needle assembly; The knotter assembly includes a main shaft and a plurality of knotters mounted on the main shaft, the knotter includes a gear ring, a beak, a rope clamping disc and a knife arm, the main shaft is mounted on a frame of the square grass bale baler, and the main shaft is connected to the driving assembly; The large needle assembly comprises a large needle and a C-shaped frame, a plurality of large needles are mounted on the crossbeam of the C-shaped frame, the legs of the C-shaped frame are mounted on the frame of the square bale baler, and the legs of the C-shaped frame are connected to the driving assembly through a rocker arm; The driving assembly drives the main shaft to rotate and drives the large needle to rotate toward the knotter through the rocker arm. The large needle carries the knotted rope through the rope clamping disk. The gear ring, eagle beak, rope clamping disk and knife arm cooperate to complete the knotting operation.

2. The wire feeding and knotting device of the square straw bale baler according to claim 1, characterized in that: The knotter comprises a gear ring, a worm gear shaft, a frame, a rope clamping piece, a rope cleaning piece, a rope clamping disc, a beak and a knife arm; The gear ring is installed on the main shaft and rotates with the main shaft, the worm gear shaft is installed on the frame, and the bevel gear of the worm gear shaft is meshed with the inner teeth of the gear ring; the rope clamping disc is provided with a rope clamping disc gear, and the rope clamping disc gear is meshed with the worm wheel of the worm gear shaft, and the rope cleaning piece is installed on the rotating shaft of the rope clamping disc; the rope clamping piece is hinged on the frame and is located at the rope clamping disc; the eagle beak is provided with an eagle beak beak gear, and the eagle beak beak gear is meshed with the outer teeth of the gear ring; the knife arm is hinged on the frame, the knife arm is connected to the gear ring, and a cutting knife is provided on the knife arm.

3. The wire feeding and knotting device of the square straw bale baler according to claim 2, characterized in that: When tying a knot, the driving assembly drives the large needle and the main shaft of the knotter to move, and the large needle sends a strand of rope to the beak of the knotter and passes through the rope clamping disc; The rotation of the main shaft drives the gear ring to move. When the outer teeth of the gear ring mesh with the eagle beak bevel gear, the eagle beak begins to rotate and wraps the two ropes. After the eagle beak rotates to a certain angle, the upper lip begins to open and gradually forms a knotted loop. During this period, the large needle also starts to return, and the inner teeth of the gear ring mesh with the bevel gear of the worm gear shaft and drive the shaft to rotate, while the worm gear of the shaft meshes with the rope clamping disc gear, thereby driving the rope clamping disc to rotate 90° and clamp the knotted rope returned by the large needle into the rope clamping disc through the rope clamping piece, which serves as the end point of the knotted rope for the next knotting; When the beak rotates to the initial position, the upper lip bites the double-strand knotted rope, and the large needle returns to the back of the knife arm, the knife arm starts to move under the drive of the gear ring cam groove to separate the rope loop and the beak from the beak, and forms a relative movement with the knotted rope bitten by the beak to complete the knotting operation; While the knife arm is completing the rope-removing operation, the cutter on the knife arm cuts the knotted rope between the rope buckle and the rope clamping disc, one strand of which serves as the end point for the next knotting, and the other strand falls to the ground under the action of the rope cleaning piece; After knotting is completed, all parts return to their initial positions and are ready for the next knotting.

4. The wire feeding and knotting device of the square grass bale baler according to claim 2, characterized in that: The gear ring and the frame are installed on the main shaft, the gear ring rotates with the main shaft, and the frame is fixed on the frame by bolt connection.

5. The wire feeding and knotting device of the square straw bale baler according to claim 1, characterized in that: The driving assembly includes a motor, a driving sprocket and a driven sprocket; the driven sprocket is installed on the main shaft, the driving sprocket and the driven sprocket are connected by a chain, the driving sprocket is connected to the motor, and the motor drives the driving sprocket and the driven sprocket to rotate synchronously.

6. The wire feeding and knotting device of the square straw bale baler according to claim 1, characterized in that: Both ends of the rocker arm are provided with shaft sleeves, the shaft sleeve at one end is sleeved on the main shaft, and the shaft sleeve at the other end is sleeved on the U-shaped frame.

7. The wire feeding and knotting device of the square grass bale baler according to claim 6, characterized in that: The top of the leg of the large needle assembly U-shaped frame is provided with a first connecting shaft, the upper part of the leg is provided with a second connecting shaft, the shaft sleeve of the rocker arm is sleeved on the second connecting shaft, and the first connecting shaft is installed on the bearing seat on the frame of the square grass bale baler.

8. The wire feeding and knotting device of a square straw bale baler according to claim 1, characterized in that: The large needle comprises a needle body, a lower seat and an upper seat, the needle body is fixedly connected to the lower seat, and the lower seat and the upper seat are fixedly connected to the crossbeam of the U-shaped frame through bolts.

9. The wire feeding and knotting device of a square grass bale baler according to claim 1, characterized in that: The knotter assembly also includes a plurality of bearing seats, a plurality of bearings are mounted on the main shaft, the bearings are mounted in the bearing seats, and the bearing seats are fixedly connected to the frame of the square grass bale baler.

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