A kind of expanding pliers for baling machine

Abstract

The present invention relates to the technical field of rubber ring flaring, and specifically to a flaring pliers for a baling machine. The invention comprises a fixed frame, a spreading column, an angled arm, a clamping handle, a support frame, a controller, a sliding plate, an adjustment box, an opening and closing mechanism, a limiting mechanism, and a reciprocating mechanism. The present invention realizes the synchronous opening and closing of the spreading column through the opening and closing mechanism, so that the partial device can drive the four spreading columns to open and close and slide synchronously, so that the spreading column can stably control the expansion of the rubber ring. The limiting mechanism realizes the limiting brake and the adjustment of the brake spacing of the spreading column, so that the partial device can stably brake the expanded spreading column, and the partial device can adjust the limiting component according to the expansion demand of the rubber ring. The reciprocating drive of the spreading column is realized through the reciprocating mechanism, so that the partial device can drive the reciprocating opening and closing of the spreading column through the electric component, which saves a lot of labor and improves the stability, linkage, adjustability and convenience of the device.

Description

Technical Field

[0001] The invention relates to the technical field of rubber ring expanding, in particular to a kind of expanding pliers for a baling machine. Background Art

[0002] Expanding pliers are a tool that is mainly used to expand the opening of an object for filling, installation or other operations. Expanding pliers are a multifunctional tool, and their specific uses vary depending on the usage scenario. Whether it is balloon filling, model making or medical examination, expanding pliers play an important role. In packaging operations, expanding pliers are mainly used to expand balloons or other packaging materials with a rubber sleeve structure in order to fill some larger contents.

[0003] The existing device mainly drives multiple expansion columns and other components to open and close through a driving assembly. The existing technology is mostly similar to a flaring pliers for a baling machine. The structure with patent number CN106915069A includes a static pliers arm, and one end of the upper side of the static pliers arm is hinged to one end of the first connecting rod and one end of the third connecting rod. The other end of the upper side of the static pliers arm is hinged to one end of the second connecting rod, the other end of the first connecting rod is hinged to the movable pliers arm, and one end of the second connecting rod is hinged to the hinge point of the static pliers arm and the movable pliers arm. The inner side of the upper part of the static pliers arm handle is connected to one end of a reset spring, and the other end of the reset spring is connected to the movable pliers arm. A lock is provided at the lower end of the static pliers arm, and a rubber wear-resistant sheath is provided on the outer walls of the static pliers arm and the movable pliers arm. The other end of the second connecting rod, the other end of the third connecting rod, and the middle of the upper end of the static pliers arm are respectively clamped with a first flaring claw, a second flaring claw, and a third flaring claw, and the outer ends of the first flaring claw, the second flaring claw, and the third flaring claw are spike-shaped. The invention has a simple structure and can quickly thread the wire into the rubber sleeve, which is convenient and quick and improves efficiency. However, there are still areas for improvement in the device.

[0004] The existing device mainly drives the four expansion columns to open and close by linking two telescopic clamp rods with two movable clamp arms, which makes it difficult for some devices to drive the four expansion columns to open and close synchronously, resulting in inconvenience for the expansion columns to stably control the expansion of the rubber ring. Secondly, some devices mainly stably control the expansion state of the expansion columns by holding them for a long time, which makes it difficult for some devices to stably brake the expanded expansion columns, resulting in inconvenience for expanding the rubber ring to a certain extent. Furthermore, some devices mainly limit the braking component to a fixed position, which makes it difficult for some devices to adjust the limit component according to the expansion requirements of the rubber ring, resulting in inconvenience for stably expanding the rubber ring to different sizes. Finally, some devices mainly open and close the clamp arms manually, which makes it difficult for some devices to drive the reciprocating opening and closing of the expansion columns by electric components, resulting in high labor intensity of the expanding operation and reducing the working efficiency and practicality of the device. Therefore, in order to solve the above problems, a kind of expanding pliers for a baler is proposed. Summary of the invention

[0005] The object of the present invention is to provide a widening pliers for a baling machine to solve the problem that the existing devices in the prior art mentioned in the above background technology mainly drive the four expansion columns to open and close by linking two telescopic pliers rods with two movable pliers arms, which makes it difficult for some devices to drive the four expansion columns to open and close synchronously, resulting in inconvenience for the expansion columns to stably control the expansion of the rubber ring. Secondly, some devices mainly stably control the expansion state of the expansion columns by holding them for a long time, which makes it difficult for some devices to stably brake the expanded expansion columns, resulting in inconvenience for expanding the rubber ring to a certain extent. Furthermore, some devices mainly limit the braking component to a fixed position, which makes it difficult for some devices to adjust the limit component according to the expansion requirements of the rubber ring, resulting in inconvenience for stably expanding the rubber ring to different sizes. Finally, some devices mainly open and close the pliers arms manually, which makes it difficult for some devices to drive the reciprocating opening and closing of the expansion columns by electric components, resulting in the problem of high labor intensity of the expansion operation.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a flaring pliers for a baler, comprising a fixed frame, two pairs of opening columns are arranged in the upper middle part of the fixed frame, a pair of angled arms are movably connected to the right side of the bottom of the fixed frame, a clamping handle is fixedly connected to the right end of the angled arm, a support frame is fixedly connected to the middle part of the right side of the fixed frame, a controller is fixedly connected to the left side of the top of the support frame, a sliding plate is arranged on the left side of the fixed frame, and an adjustment box is fixedly connected to the left side of the sliding plate;

[0007] An opening and closing mechanism is provided inside the fixed frame, and the opening and closing mechanism includes a sliding frame, and the sliding frame is arranged on the front and rear sides of the fixed frame. The adjusting box includes a limiting mechanism, and the limiting mechanism includes a symmetrical screw rod, and the two ends of the symmetrical screw rod are movably connected to the inner wall of the adjusting box. A reciprocating mechanism is provided below the support frame, and the reciprocating mechanism includes a limiting frame, and the top of the limiting frame is fixedly connected to the right side of the inner wall of the support frame.

[0008] Preferably, both ends of the sliding frame are fixedly connected to limiting sliding sleeves, a limiting rod is inserted into the inner wall of the limiting sliding sleeve, and both ends of the limiting rod are fixedly connected to both sides of the inner wall of the fixed frame.

[0009] Preferably, a movable groove is provided at the bottom of the sliding frame, a traction block is slidably connected to the inner wall of the movable groove, and the bottom of the traction block is fixedly connected to the left top of the angle arm.

[0010] Preferably, the inner wall of the sliding frame is fixedly connected with a square rod, the outer wall of the square rod is sleeved with a sliding platform, the bottom of the support column is fixedly connected to the top of the sliding platform, the outer wall of the sliding platform is movably connected with a linkage rod, and the other end of the linkage rod is movably connected to the middle of the inner wall of the fixed frame.

[0011] Preferably, a second bevel gear is fixedly connected to the middle part of the inner wall of the symmetrical screw, the left side of the second bevel gear is meshingly connected to the first bevel gear, the middle part of the left side of the first bevel gear is fixedly connected to a transmission shaft, and the left end of the transmission shaft passes through the adjustment box and is fixedly connected to a twist cover.

[0012] Preferably, both sides of the outer wall of the symmetrical screw are threadedly connected with adjusting screw sleeves, the right side of the outer wall of the adjusting screw sleeve passes through the sliding plate and is fixedly connected to the limiting block, and both sides of the inner side of the sliding plate are provided with limiting sliding slots corresponding to the adjusting screw sleeves.

[0013] Preferably, the inner wall of the limit block can be sleeved on the left side of the outer wall of the limit rod, and a pair of conical cylinders are provided between the two limit blocks. The inner wall of the conical cylinder is sleeved on the outer wall of the limit rod. The top diameter of the conical cylinder is smaller than the inner wall diameter of the limit block, and the side wall of the conical cylinder is fixedly connected to the side of the limit sleeve close to the limit block.

[0014] Preferably, the two ends of the right side of the sliding plate are fixedly connected to sliding rods, the right end of the sliding rod passes through the left side wall of the fixed frame and is fixedly connected to a stop block, the left side of the stop block is located on the outer wall of the sliding rod and is fixedly connected to a spring, and the left end of the spring is fixedly connected to the left side wall of the fixed frame.

[0015] Preferably, the inner wall of the limit frame is slidably connected to a sliding frame, the right side of the sliding frame is movably connected to a traction rod, and the other end of the traction rod is movably connected to the top right side of the angle arm.

[0016] Preferably, a rack belt group is fixedly connected to the front and rear sides of the inner wall of the sliding frame, a half gear is meshingly connected to the inner wall of the rack belt group, a rotating shaft is fixedly connected to the top middle of the half gear, the top of the rotating shaft passes through the support frame and is fixedly connected to a servo motor, and the bottom of the servo motor is fixedly connected to the top right side of the support frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention uses the structures of the sliding frame, limiting sliding sleeve, limiting rod, movable groove, traction block, square rod, sliding platform and linkage rod in the opening and closing mechanism, and drives the folding arm to rotate symmetrically by holding the clamping handle. The folding arm drives the sliding frame, square rod and sliding platform to slide symmetrically front and back through the traction block and the movable groove. The sliding platform is restricted by the linkage rod, so that the linkage rod drives the sliding platform to slide symmetrically left and right on the outer wall of the square rod, and the sliding platform drives the support column to slide synchronously, thereby realizing the synchronous opening and closing of the support column, so that some devices can drive the four support columns to open and close synchronously, which is convenient for the support column to stably control the expansion of the rubber ring, thereby improving the stability and practicality of the device.

[0019] 2. The present invention uses the limit block, conical cylinder, sliding rod, stopper and spring structures in the limit mechanism, and drives the limit sleeve to slide symmetrically away from the outer wall of the limit rod through the sliding frame, and the limit sleeve on the left side drives the conical cylinder to slide synchronously, so that the conical cylinder pushes the limit block, adjusting screw sleeve, symmetrical screw, adjusting box and sliding plate to slide left, and the sliding plate drives the sliding rod and the stopper to slide and compress the spring. The compressed spring drives the adjusting box and the sliding plate to automatically reset, so that the limit block limit card is set between the limit sleeve on the left side, thereby realizing the limit braking of the expansion column, so that some devices can stably brake the expanded expansion column, which is convenient for expanding the rubber ring to a certain extent, thereby improving the linkage and practicality of the device.

[0020] 3. The present invention uses the structures such as the symmetrical screw, the second bevel gear, the first bevel gear, the transmission shaft, the twist cover, the adjusting screw sleeve and the limit block in the limit mechanism. The twist cover is rotated to drive the transmission shaft and the first bevel gear to rotate in a limited manner. The meshing of the first bevel gear drives the second bevel gear and the symmetrical screw to rotate in a limited manner. The symmetrical screw drives the adjusting screw sleeve and the limit block to slide symmetrically, thereby realizing the adjustment of the braking distance. Part of the device can adjust the limit assembly according to the expansion requirements of the rubber ring, which is convenient for stably expanding the rubber ring to different sizes, thereby improving the adjustability and practicality of the device.

[0021] 4. The present invention uses structures such as a limit frame, a sliding frame, a traction rod, a rack belt group, a half gear, a rotating shaft and a servo motor in the reciprocating mechanism. The servo motor is started by a controller to drive the rotating shaft and the half gear to limit rotation. The meshing of the half gear drives the rack belt group and the sliding frame to slide back and forth on the inner wall of the limit frame. The sliding frame drives the right end of the traction rod to slide synchronously, so that the left end of the traction rod drives the angle arm to limit rotation, thereby realizing the reciprocating drive of the support column. This allows some devices to drive the reciprocating opening and closing of the support column through an electric component, saving a lot of labor and improving the convenience and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front top perspective view of the structure of the present invention;

[0023] Figure 2 It is a front cross-sectional perspective view of the structure of the present invention;

[0024] Figure 3 It is a bottom-view cross-sectional stereoscopic view of the local structure of the fixing frame and the opening and closing mechanism of the present invention;

[0025] Figure 4 It is a top perspective view of the local structure of the fixing frame and the opening and closing mechanism of the present invention;

[0026] Figure 5 It is a left side sectional stereoscopic view of the partial structure of the regulating box and the limiting mechanism of the present invention;

[0027] Figure 6 It is a top-view cross-sectional stereoscopic diagram of the local structure of the regulating box and the limiting mechanism of the present invention;

[0028] Figure 7 It is a front cross-sectional perspective view of the local structure of the support frame and the reciprocating mechanism of the present invention;

[0029] Figure 8 It is a top perspective view of the local structure of the traction arm and the reciprocating mechanism of the present invention.

[0030] In the figure: 101, fixed frame; 102, support column; 103, angle arm; 104, clamping handle; 105, support frame; 106, controller; 107, sliding plate; 108, adjustment box; 2, opening and closing mechanism; 201, sliding frame; 202, limit sliding sleeve; 203, limit rod; 204, movable groove; 205, traction block; 206, square rod; 207, sliding table; 208, linkage rod; 3, limit mechanism; 301, symmetry Screw rod; 302, second bevel gear; 303, first bevel gear; 304, transmission shaft; 305, twist cover; 306, adjusting screw sleeve; 307, limit block; 308, truncated cone cylinder; 309, sliding rod; 310, stop block; 311, spring; 4, reciprocating mechanism; 401, limit frame; 402, sliding frame; 403, traction rod; 404, rack belt group; 405, half gear; 406, rotating shaft; 407, servo motor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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. 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.

[0032] See also Figure 1-Figure 8 , an embodiment provided by the present invention:

[0033] A flaring pliers for a baler, comprising a fixed frame 101, two pairs of opening columns 102 are provided in the middle of the upper part of the fixed frame 101, a pair of angled arms 103 are movably connected to the right side of the bottom of the fixed frame 101, a clamping handle 104 is fixedly connected to the right end of the angled arm 103, a support frame 105 is fixedly connected to the middle of the right side of the fixed frame 101, a controller 106 is fixedly connected to the left side of the top of the support frame 105, a sliding plate 107 is provided on the left side of the fixed frame 101, and an adjustment box 108 is fixedly connected to the left side of the sliding plate 107;

[0034] An opening and closing mechanism 2 is provided inside the fixed frame 101, and the opening and closing mechanism 2 includes a sliding frame 201, which is provided on the front and rear sides of the fixed frame 101, and the two ends of the sliding frame 201 are fixedly connected to the limited sliding sleeve 202, and the inner wall of the limited sliding sleeve 202 is inserted with a limiting rod 203, and the two ends of the limiting rod 203 are fixedly connected to the two sides of the inner wall of the fixed frame 101. Through this design, the sliding frame 201 drives the limiting sliding sleeve 202 to slide on the outer wall of the limiting rod 203. A movable groove 204 is provided at the bottom of the sliding frame 201, and a traction block 205 is slidably connected to the inner wall of the movable groove 204. The bottom of the traction block 205 is fixedly connected to the left top of the angle arm 103. Through this design, the angle arm 103 drives the traction block 205 in the movable groove 20 4 slides left and right, so that the traction block 205 drives the sliding frame 201 to slide symmetrically front and back, the inner wall of the sliding frame 201 is fixedly connected with a square rod 206, the outer wall of the square rod 206 is sleeved with a sliding platform 207, the bottom of the support column 102 is fixedly connected to the top of the sliding platform 207, the outer wall of the sliding platform 207 is movably connected with a linkage rod 208, and the other end of the linkage rod 208 is movably connected to the middle of the inner wall of the fixed frame 101. Through this design, the sliding frame 201 drives the square rod 206, the sliding platform 207 and the two pairs of support columns 102 to slide symmetrically front and back, and the sliding platform 207 is restricted by the square rod 206 and the linkage rod 208, so that the sliding platform 207 drives a pair of support columns 102 to slide symmetrically left and right, thereby realizing the synchronous opening and closing sliding of the four support columns 102.

[0035] The regulating box 108 includes a limiting mechanism 3, which includes a symmetrical screw 301, both ends of which are movably connected to the inner wall of the regulating box 108, a second bevel gear 302 is fixedly connected to the middle of the inner wall of the symmetrical screw 301, the left side of the second bevel gear 302 is meshedly connected to the first bevel gear 303, the left middle of the first bevel gear 303 is fixedly connected to a transmission shaft 304, the left end of the transmission shaft 304 passes through the regulating box 108 and is fixedly connected to a twist cover 305, and through this design, the twist cover 305 drives the transmission shaft 304 and the first bevel gear 303 limited rotation, so that the first bevel gear 303 meshes to drive the second bevel gear 302 and the symmetrical screw 301 to limited rotation, the outer wall of the symmetrical screw 301 is threadedly connected with adjusting screw sleeves 306 on both sides, the outer wall of the adjusting screw sleeve 306 passes through the sliding plate 107 on the right side and is fixedly connected to the limited block 307, and the inner sides of the sliding plate 107 are provided with limited sliding grooves corresponding to the adjusting screw sleeve 306. Through this design, the symmetrical screw 301 drives the adjusting screw sleeve 306 to slide symmetrically on the inner wall of the limited sliding groove, so that the adjusting screw sleeve 306 drives the limited block 307 to slide synchronously, and the limited The inner wall of the positioning block 307 can be sleeved on the left side of the outer wall of the limiting rod 203. A pair of conical cylinders 308 are provided between the two limiting blocks 307. The inner wall of the conical cylinder 308 is sleeved on the outer wall of the limiting rod 203. The top diameter of the conical cylinder 308 is smaller than the inner wall diameter of the limiting block 307. The side wall of the conical cylinder 308 is fixedly connected to the side of the limiting sleeve 202 close to the limiting block 307. Through this design, the limiting sleeve 202 drives the conical cylinder 308 to slide synchronously, so that the limiting sleeve 202 can be placed on the outer side of the limiting block 307 for limiting braking, which is convenient for the support column 102 to be expanded. After opening, limiting braking is performed, the two ends of the right side of the sliding plate 107 are fixedly connected with sliding rods 309, the right end of the sliding rod 309 passes through the left side wall of the fixed frame 101 and is fixedly connected with a stopper 310, the left side of the stopper 310 is located on the outer wall of the sliding rod 309 and is fixedly connected with a spring 311, and the left end of the spring 311 is fixedly connected to the left side wall of the fixed frame 101. Through this design, the conical cylinder 308 pushes the sliding plate 107 and the adjusting box 108 to slide to the left through components such as the limit block 307, and the sliding plate 107 and the adjusting box 108 are automatically reset through the spring 311.

[0036] A reciprocating mechanism 4 is provided below the support frame 105. The reciprocating mechanism 4 includes a limit frame 401. The top of the limit frame 401 is fixedly connected to the right side of the inner wall of the support frame 105. The inner wall of the limit frame 401 is slidably connected to a sliding frame 402. The right side of the sliding frame 402 is movably connected to a traction rod 403. The other end of the traction rod 403 is movably connected to the top right side of the angle arm 103. Through this design, the sliding frame 402 can slide left and right on the inner wall of the limit frame 401, so that the sliding frame 402 drives the angle arm 103 to slide symmetrically through the traction rod 403. The front and rear sides of the inner wall of the sliding frame 402 are fixed. A rack belt set 404 is fixedly connected, and a half gear 405 is meshedly connected to the inner wall of the rack belt set 404. A rotating shaft 406 is fixedly connected to the top middle of the half gear 405. The top of the rotating shaft 406 passes through the support frame 105 and is fixedly connected to a servo motor 407. The bottom of the servo motor 407 is fixedly connected to the top right side of the support frame 105. Through this design, the servo motor 407 drives the rotating shaft 406 and the half gear 405 to rotate in a limited position, so that the half gear 405 meshes to drive the rack belt set 404 and the sliding frame 402 to slide back and forth left and right, which is convenient for the reciprocating mechanism 4 to drive the opening and closing mechanism 2.

[0037] Working principle: When the support column 102 needs to be opened and closed synchronously, it is first opened and closed by holding the clamping handle 104, so that the clamping handle 104 drives the angle arm 103 to limit rotation, and the angle arm 103 drives the traction block 205 to slide on the inner wall of the movable groove 204, and the traction block 205 drives the sliding frame 201 to slide symmetrically front and back, and the sliding frame 201 drives the limiting sliding sleeve 202 to slide on the outer wall of the limiting rod 203. At the same time, the sliding frame 201 drives the square rod 206 and the sliding table 207 to rotate synchronously, and the sliding table 207 is restricted by the linkage rod 208, so that the linkage rod 208 drives the sliding table 207 to slide symmetrically on the outer wall of the square rod 206, so that the sliding table 207 drives the support column 102 to slide synchronously, thereby realizing the synchronous opening and closing operation of the support column 102.

[0038] When it is necessary to limit the braking of the expansion column 102, the limiting sleeve 202 is first driven by the sliding frame 201 to slide symmetrically away from the outer wall of the limiting rod 203, and the limiting sleeve 202 on the left drives the conical cylinder 308 to slide synchronously, so that the conical cylinder 308 pushes the limiting block 307 to slide to the left, and the limiting block 307 drives the adjusting box 108 and the sliding plate 107 to slide synchronously through the adjusting screw sleeve 306 and the symmetrical screw 301, and the sliding plate 107 drives the sliding rod 309 and the stopper 310 to limit the sliding and compress the spring 311. The compressed spring 311 drives the adjusting box 108 and the sliding plate 107 to automatically reset, so that the limiting block 307 is limited and clamped between the limiting sleeve 202 on the left, thereby realizing the limit braking operation of the expansion column 102.

[0039] When the braking distance needs to be adjusted, first rotate the twist cover 305, the twist cover 305 drives the transmission shaft 304 to limit rotation, the transmission shaft 304 drives the first bevel gear 303 to rotate synchronously, the first bevel gear 303 engages to drive the second bevel gear 302 to rotate, the second bevel gear 302 drives the symmetrical screw 301 to limit rotation, the symmetrical screw 301 drives the adjusting screw sleeve 306 to slide symmetrically, the adjusting screw sleeve 306 drives the limit block 307 to slide synchronously, thereby realizing the adjustment operation of the braking distance.

[0040] When the support column 102 needs to be driven back and forth, the servo motor 407 is first started through the controller 106. The servo motor 407 drives the rotating shaft 406 to limit the rotation, and the rotating shaft 406 drives the half gear 405 to rotate synchronously. The half gear 405 engages and drives the rack belt group 404 to slide back and forth left and right. The rack belt group 404 drives the sliding frame 402 to slide synchronously on the inner wall of the limit frame 401, and the sliding frame 402 drives the right end of the traction rod 403 to slide synchronously, so that the left end of the traction rod 403 drives the angle arm 103 to limit the rotation, thereby realizing the reciprocating drive operation of the support column 102. The operation ends here.

[0041] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A flaring pliers for a baling machine, comprising a fixing frame (101), characterized in that: Two pairs of support columns (102) are provided in the middle of the upper part of the fixed frame (101); a pair of angled arms (103) are movably connected to the right side of the bottom of the fixed frame (101); a clamping handle (104) is fixedly connected to the right end of the angled arm (103); a support frame (105) is fixedly connected to the middle of the right side of the fixed frame (101); a controller (106) is fixedly connected to the left side of the top of the support frame (105); a sliding plate (107) is provided on the left side of the fixed frame (101); and an adjustment box (108) is fixedly connected to the left side of the sliding plate (107); An opening and closing mechanism (2) is provided inside the fixed frame (101), and the opening and closing mechanism (2) comprises a sliding frame (201), the sliding frame (201) is provided at the front and rear sides of the fixed frame (101), a movable groove (204) is provided at the bottom of the sliding frame (201), a traction block (205) is slidably connected to the inner wall of the movable groove (204), the bottom of the traction block (205) is fixedly connected to the left top of the angle arm (103), a square rod (206) is fixedly connected to the inner wall of the sliding frame (201), a sliding platform (207) is sleeved on the outer wall of the square rod (206), the bottom of the support column (102) is fixedly connected to the top of the sliding platform (207), the outer wall of the sliding platform (207) is movably connected to a linkage rod (208), and the other end of the linkage rod (208) is movably connected to the middle of the inner wall of the fixed frame (101); The two ends of the sliding frame (201) are fixedly connected to the limiting sliding sleeve (202), the inner wall of the limiting sliding sleeve (202) is provided with a limiting rod (203), the two ends of the limiting rod (203) are fixedly connected to the two sides of the inner wall of the fixed frame (101), the regulating box (108) comprises a limiting mechanism (3), the limiting mechanism (3) comprises a symmetrical screw rod (301), the two ends of the symmetrical screw rod (301) are movably connected to the inner wall of the regulating box (108), the two sides of the outer wall of the symmetrical screw rod (301) are threadedly connected to the adjusting screw sleeve (306), the right side of the outer wall of the adjusting screw sleeve (306) passes through the sliding plate ( 107) and fixedly connected to a limit block (307), both sides of the interior of the sliding plate (107) are provided with limit sliding slits corresponding to the adjusting screw sleeve (306), the inner wall of the limit block (307) can be sleeved on the left side of the outer wall of the limit rod (203), a pair of frustum cylinders (308) are provided between the limit blocks (307), the inner wall of the frustum cylinder (308) is sleeved on the outer wall of the limit rod (203), the top diameter of the frustum cylinder (308) is smaller than the inner wall diameter of the limit block (307), and the side wall of the frustum cylinder (308) is fixedly connected to a side of the limit sliding sleeve (202) close to the limit block (307); A reciprocating mechanism (4) is provided below the support frame (105), the reciprocating mechanism (4) comprising a limit frame (401), the top of the limit frame (401) being fixedly connected to the right side of the inner wall of the support frame (105), the inner wall of the limit frame (401) being slidably connected to a sliding frame (402), the right side of the sliding frame (402) being movably connected to a traction rod (403), the other end of the traction rod (403) being movably connected to the top right side of the angle arm (103).

2. The expanding pliers for a baler according to claim 1, characterized in that: A second bevel gear (302) is fixedly connected to the middle of the inner wall of the symmetrical screw rod (301), the left side of the second bevel gear (302) is meshingly connected to the first bevel gear (303), a transmission shaft (304) is fixedly connected to the middle of the left side of the first bevel gear (303), and the left end of the transmission shaft (304) passes through the adjustment box (108) and is fixedly connected to a twist cover (305).

3. The expanding pliers for a baler according to claim 1, characterized in that: The two ends of the right side of the sliding plate (107) are fixedly connected to sliding rods (309); the right end of the sliding rod (309) passes through the left side wall of the fixed frame (101) and is fixedly connected to a stopper (310); the left side of the stopper (310) is located on the outer wall of the sliding rod (309) and is fixedly connected to a spring (311); the left end of the spring (311) is fixedly connected to the left side wall of the fixed frame (101).

4. The expanding pliers for a baler according to claim 1, characterized in that: A rack belt group (404) is fixedly connected to the front and rear sides of the inner wall of the sliding frame (402); a half gear (405) is meshingly connected to the inner wall of the rack belt group (404); a rotating shaft (406) is fixedly connected to the middle of the top of the half gear (405); the top of the rotating shaft (406) passes through the support frame (105) and is fixedly connected to a servo motor (407); the bottom of the servo motor (407) is fixedly connected to the top right side of the support frame (105).

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