Improved transmission system for button sewing machine

Abstract

The invention provides an improved transmission system for a button sewing machine, which comprises a machine head, a groove is arranged at the front end of the machine head, a transverse walking positioning strip is arranged on the bottom surface of the groove, a walking driving mechanism is arranged between the machine head and the transverse walking positioning strip, and the walking driving mechanism comprises a power input end. A connecting shaft is arranged on the power input end, a center shaft is arranged on the outer side of the rear portion of the machine head, a cam is arranged outside the center shaft in a sleeved mode, a handle rod is arranged on the cam, an L-shaped driving groove is formed in the cam, a roller is arranged on the lower portion of the cam, and the machine head is connected with a driving device. The driving device comprises a switch and a propeller shaft. And meanwhile, the requirements of high-strength-grade belts and button binding can be met, and the button binding efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of machinery, in particular to the machinery of a conveyor belt stapling machine, and more particularly to an improved transmission system for a buttoning machine. Background Art

[0002] A conveyor belt buttoning machine is used to staple a buckle to the joint of a conveyor belt, thereby connecting the conveyor belt with the buckle. The handle lever type buttoning machine has the advantages of simple operation and high buttoning efficiency, and thus has been widely used. For the existing handle lever type buttoning machine, an operator manually operates the handle lever to displace the machine head along the conveyor belt stapling line and perform the buttoning operation. However, such a mode cannot meet the needs of production efficiency in today's era. Repeatedly operating the handle lever manually for a long time will cause obvious fatigue, and at the same time, the strength of the staff is limited, and the manual handle lever cannot meet the requirements of high-strength belts and buttoning operations. Summary of the Invention

[0003] The purpose of the present invention is to provide an improved transmission system for a buttoning machine, and the improved transmission system for a buttoning machine is to solve the technical problem that the manual handle lever of the handle lever type buttoning machine in the prior art cannot meet the working requirements.

[0004] To achieve the above purpose, the present invention provides the following technical solutions: An improved transmission system for a button sewing machine, comprising a machine head, a groove is arranged at the front end of the machine head, a transverse walking positioning strip is arranged on the bottom surface of the groove, the transverse walking positioning strip and the machine head are arranged as a sliding pair along the length direction of the transverse walking positioning strip, a plurality of convex teeth are continuously arranged on one side of the transverse walking positioning strip facing the machine head, a notch is formed between two adjacent convex teeth, a through hole is arranged under the groove of the machine head, a nail punching hammer is arranged in the through hole, the nail punching hammer and the machine head are arranged as a sliding pair along the axial direction of the through hole, the axial direction of the through hole is perpendicular to the length direction of the transverse walking positioning strip, a nail pulling plate is arranged at the upper part of the groove, the nail pulling plate is arranged above the nail punching hammer, the nail pulling plate and the nail punching hammer are respectively connected with the movable ends of a nail punching hammer transmission mechanism, a walking transmission mechanism is arranged between the machine head and the transverse walking positioning strip, the walking transmission mechanism comprises a power input end, a connecting shaft is arranged on the power input end, a central shaft is arranged outside the rear part of the machine head, a cam is sleeved outside the central shaft, the cam and the central shaft form a rotating pair, a handle rod is arranged on the cam, the handle rod is arranged on the side surface of the cam and is located in the rotating plane of the cam, an L-shaped driving groove is arranged in the cam, the connecting shaft extends into the driving groove, the connecting shaft and the driving groove form a sliding pair, a roller is arranged at the lower part of the cam, the machine head is connected with a driving device, the driving device comprises a switch and a propulsion shaft, the switch is arranged behind the cam and faces the roller, and the propulsion shaft is connected with the driving end of the nail punching hammer transmission mechanism.

[0005] Furthermore, the front end of the propulsion shaft extends into the nose. The driving end of the nail punching hammer transmission mechanism is a connecting rod. The connecting rod is arranged in a sliding track and forms a sliding pair with the sliding track. The connecting rod is connected to the front end of the propulsion shaft. The nail punching hammer transmission mechanism further includes an upper connecting rod and a lower connecting rod. One ends of the upper connecting rod and the lower connecting rod are respectively hinged to the connecting rod. The other end of the lower connecting rod is hinged to one end of a second lower connecting rod. The other end of the second lower connecting rod is hinged to the nail punching hammer. The middle part of the second lower connecting rod is hinged to the inner wall of the nose. The middle part of the upper connecting rod is hinged to the first end of a large triangular plate. The second end of the large triangular plate is hinged to the inner wall of the nose. The third end of the large triangular plate is hinged to the first end of a small triangular plate. A return torsion spring is arranged at the first end of the small triangular plate. The second end of the small triangular plate is hinged to one end of an upper second connecting rod. An arc-shaped sliding groove is arranged at the other end of the upper second connecting rod. The other end of the upper connecting rod and the sliding groove of the upper second connecting rod are set as a sliding pair. The third end of the small triangular plate is hinged to one end of an upper third connecting rod. The other end of the upper third connecting rod is hinged to the tail of the rivet plate. The second end of the large triangular plate is arranged above the middle part of the second lower connecting rod.

[0006] Furthermore, a sliding groove is arranged in the middle of one side of the nose. A positioning strip is arranged in the sliding groove. The front end of the positioning strip is cooperatively arranged with the notch. The positioning strip forms a sliding pair with the sliding groove. The sliding direction of the positioning strip is perpendicular to the length direction of the lateral walking positioning strip. The connecting shaft is arranged outside the rear end of the positioning strip. A first connecting rod and a second connecting rod are arranged outside the positioning strip. One end of the first connecting rod is hinged to a connecting rod seat, and the connecting rod seat is fixed on the outer side wall of the nose. One end of the second connecting rod is hinged to the middle part of the positioning strip. The other end of the second connecting rod is hinged to the middle part of the first connecting rod. A limiting block is arranged at the front end of the first connecting rod, and a convex tooth is arranged on the limiting block.

[0007] Furthermore, a concave area is arranged at the lower part of the cam, and the roller is arranged on the concave area.

[0008] Furthermore, a reset device is arranged in the switch or the switch is of a self-resetting structure.

[0009] Furthermore, the driving device is a hydraulic cylinder.

[0010] Further, the front part of the sliding groove is a T-shaped groove, auxiliary rib strips are respectively arranged on the upper and lower sides of the positioning strip, the cross-sectional shape of the positioning strip matches that of the T-shaped groove, and a connection hole is arranged at the tail of the positioning strip.

[0011] Working principle: Integrate the operation of pushing the head and the operation of starting and closing the oil cylinder on one cam. As the handle rod drives the cam to rotate, first achieve the displacement and positioning of the head, and then continue to rotate the cam, then the oil cylinder will be started to perform the buttoning operation.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The operation of the staff is more labor-saving, and the buttoning action can be accurately completed. At the same time, it can meet the requirements of high-strength belts and buttons, and improve the buttoning efficiency. Brief description of the drawings

[0013] Figure 1 It is an in-situ three-dimensional schematic diagram of an improved transmission system for a buttoning machine of the present invention.

[0014] Figure 2 It is an in-situ side schematic diagram of an improved transmission system for a buttoning machine of the present invention.

[0015] Figure 3 It is an in-situ three-dimensional schematic diagram of the positioning completion of an improved transmission system for a buttoning machine of the present invention.

[0016] Figure 4 It is an in-situ side schematic diagram of the positioning completion of an improved transmission system for a buttoning machine of the present invention.

[0017] Figure 5 It is an in-situ three-dimensional schematic diagram of starting the oil cylinder of an improved transmission system for a buttoning machine of the present invention.

[0018] Figure 6 It is an in-situ side schematic diagram of starting the oil cylinder of an improved transmission system for a buttoning machine of the present invention.

[0019] Figure 7 It is a schematic diagram of the driving device of an improved transmission system for a buttoning machine of the present invention.

[0020] Figure 8 It is a schematic diagram of the driving device of an improved transmission system for a buttoning machine of the present invention.

[0021] Figure 9 It is a schematic diagram of the traveling driving mechanism of an improved transmission system for a buttoning machine of the present invention.

[0022] Figure 10 It is a schematic diagram of the traveling driving mechanism of an improved transmission system for a buttoning machine of the present invention.

[0023] Figure 11 Schematic diagram of the nail driving hammer transmission mechanism of an improved transmission system for a button sewing machine according to the present invention.

[0024] Figure 12 Schematic diagram of the nail driving hammer transmission mechanism of an improved transmission system for a button sewing machine according to the present invention.

[0025] Figure 13 Schematic diagram of the nail driving hammer transmission mechanism of an improved transmission system for a button sewing machine according to the present invention.

[0026] Figure 14 Schematic diagram of the nail driving hammer transmission mechanism of an improved transmission system for a button sewing machine according to the present invention.

[0027] Figure 15 Schematic diagram of the nail driving hammer transmission mechanism of an improved transmission system for a button sewing machine according to the present invention.

[0028] Figure 16 Schematic diagram of the nail driving hammer transmission mechanism of an improved transmission system for a button sewing machine according to the present invention.

[0029] Figure 17 Side view of the machine head of an improved positioning mechanism for a button sewing machine according to the present invention.

[0030] Figure 18 Schematic diagram of the positioning bar of an improved positioning mechanism for a button sewing machine according to the present invention.

[0031] Figure 19 Assembly diagram of an improved positioning mechanism for a button sewing machine according to the present invention. Embodiment

[0032] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments and drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of 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. Embodiment

[0033] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , the present invention provides a technical solution: An improved transmission system for a button sewing machine, comprising a machine head 1. A groove is provided at the front end of the machine head 1. A transverse walking positioning strip is provided on the bottom surface of the groove. The transverse walking positioning strip and the machine head 1 are set as a sliding pair along the length direction of the transverse walking positioning strip. A number of convex teeth are continuously provided on the side of the transverse walking positioning strip facing the machine head 1. A notch is formed between two adjacent convex teeth. A through hole is provided under the groove of the machine head 1. A nail punching hammer 50 is provided in the through hole. The nail punching hammer 50 and the machine head 1 are set as a sliding pair along the axial direction of the through hole. The axial direction of the through hole is perpendicular to the length direction of the transverse walking positioning strip. A nail pulling plate 51 is provided above the groove. The nail pulling plate 51 is arranged above the nail punching hammer 50. The nail pulling plate 51 and the nail punching hammer 50 are respectively connected to the movable ends of a nail punching hammer transmission mechanism. A walking transmission mechanism is provided between the machine head 1 and the transverse walking positioning strip. The walking transmission mechanism includes a power input end. A connecting shaft 4 is provided on the power input end. A central shaft 5 is provided outside the rear part of the machine head 1. A cam 6 is sleeved on the central shaft 5. The cam 6 and the central shaft 5 form a rotating pair. A handle rod 11 is provided on the cam 6. The handle rod 11 is arranged on the side of the cam 6 and is located in the rotation plane of the cam 6. An L-shaped driving groove 7 is provided in the cam 6. The connecting shaft 4 extends into the driving groove 7. The connecting shaft 4 and the driving groove 7 form a sliding pair. A roller 8 is provided at the lower part of the cam 6. The machine head 1 is connected with a driving device 9. The driving device 9 includes a switch 10 and a propulsion shaft 20. The switch 10 is provided behind the cam 6 and faces the roller 8. The propulsion shaft 20 is connected to the driving end of the nail punching hammer transmission mechanism.

[0034] Further, the front end of the propulsion shaft 20 extends into the machine head 1. The driving end of the nail punching hammer transmission mechanism is a connecting rod 21. The connecting rod 21 is arranged in a sliding track and forms a sliding pair with the sliding track. The connecting rod 21 is connected to the front end of the propulsion shaft 20. The nail punching hammer transmission mechanism further includes an upper connecting rod 41 and a lower connecting rod 42. One ends of the upper connecting rod 41 and the lower connecting rod 42 are respectively hinged to the connecting rod 21. The other end of the lower connecting rod 42 is hinged to one end of a lower second connecting rod 43. The other end of the lower second connecting rod 43 is hinged to the nail punching hammer 50. The middle part of the lower second connecting rod 43 is hinged to the inner wall of the machine head 1. The middle part of the upper connecting rod 41 is hinged to the first end of a large triangular plate 44. The second end of the large triangular plate 44 is hinged to the inner wall of the machine head 1. The third end of the large triangular plate 44 is hinged to the first end of a small triangular plate 45. A reset torsion spring 48 is arranged at the first end of the small triangular plate 45. The second end of the small triangular plate 45 is hinged to one end of an upper second connecting rod 46. An arc-shaped sliding groove is arranged at the other end of the upper second connecting rod 46. The other end of the upper connecting rod 41 and the sliding groove of the upper second connecting rod 46 are set as a sliding pair. The third end of the small triangular plate 45 is hinged to one end of an upper third connecting rod 47. The other end of the upper third connecting rod 47 is hinged to the tail of the rivet plate 51. The second end of the large triangular plate 44 is arranged above the middle part of the lower second connecting rod 43.

[0035] Further, a sliding groove 2 is arranged in the middle of one side of the machine head 1. A positioning strip 3 is arranged in the sliding groove 2. The front end of the positioning strip 3 is arranged in cooperation with the notch. The positioning strip 3 forms a sliding pair with the sliding groove 2. The sliding direction of the positioning strip 3 is perpendicular to the length direction of the transverse walking positioning strip. A connecting shaft 4 is arranged outside the rear end of the positioning strip 3. A first connecting rod 31 and a second connecting rod 32 are arranged outside the positioning strip 3. One end of the first connecting rod 31 is hinged to a connecting rod seat. The connecting rod seat is fixed on the outer side wall of the machine head 1. One end of the second connecting rod 32 is hinged to the middle part of the positioning strip 3. The other end of the second connecting rod 32 is hinged to the middle part of the first connecting rod 31. A limiting block is arranged at the front end of the first connecting rod 31. A convex tooth is arranged on the limiting block.

[0036] Further, a concave area is arranged at the lower part of the cam 6. A roller 8 is arranged on the concave area.

[0037] Further, a reset device is arranged in the switch 10 or the switch 10 is a self-resetting structure.

[0038] Further, the driving device 9 is a hydraulic cylinder.

[0039] Further, the front part of the sliding groove 2 is a T-shaped groove. Auxiliary rib strips 33 are respectively arranged on the upper and lower sides of the positioning strip 3. The cross-sectional shape of the positioning strip 3 is matched with the T-shaped groove. A connecting hole 34 is arranged at the tail of the positioning strip 3.

[0040] Working process: Step 0, as Figure 1 and Figure 2 shown, this is the initial state at this time; Step 1, as Figure 3 and Figure 4 shown, at this time, pull the handle rod 11, and the protruding part at the front end of the positioning strip 3 moves forward along the sliding groove 2. At the same time, through the walking drive mechanism on the outside, the machine head 1 moves approximately one grid in the direction of the arrow, achieving rough positioning; Step 2, as Figure 3 and Figure 4 shown, at this time, continue to pull the handle rod 11, so that the positioning strip 3 abuts tightly in the groove of the mounting buckle plate. The groove of the mounting buckle plate matches the wedge shape at the front end of the positioning strip 3, thus playing a role in precise positioning; Step 3, as Figure 5 and Figure 6 shown, continue to pull the handle rod 11. Due to the shape of the L-shaped driving groove 7 in the cam 6, the positioning strip 3 continues to abut tightly in the groove of the mounting buckle plate, fixing the position of the entire machine head 1 relative to the mounting buckle plate. At the same time, the roller 8 below the cam 6 begins to contact the switch 10 of the driving device 9 and continuously maintains the pressure on the handle rod 11, thereby starting the driving device 9, and the nail driving hammer inside the machine head 1 starts the binding work; After the binding is completed, pull the handle rod 11 in the reverse direction and return it to the initial position. The roller 8 below the cam 6 leaves the switch 10 of the driving device 9, and the machine head 1 returns to the Figure 1 and Figure 2 shown state.

[0041] After the handle rod is stressed, it drives the cam to rotate around the central axis, causing the connecting shaft to move along the L-shaped driving groove, driving the walking drive mechanism to start operating, realizing the movement of the machine head along the rack for precise positioning. The cam continues to twist and hold, so that the roller continuously presses the switch of the driving device (hydraulic cylinder). The hydraulic cylinder starts to advance. After the buttoning work is completed, the handle rod resets the cam, and the hydraulic cylinder automatically retracts, and then the next buttoning action can be carried out. The operation of the staff is more labor-saving, and the buttoning action is accurately completed without causing misoperation resulting in unsuccessful buttoning.

[0042] Regarding the driving device and the binding process: As Figure 7 and Figure 8 shown, a propulsion shaft 20 is arranged in the driving device 9. The front end of the propulsion shaft 9 is connected to a transmission rod 21. The transmission rod 21 is connected to a set of link mechanisms. The link mechanisms are transmitted from one end to the other end of the transmission track along the transmission rod 21, realizing the control of the upper nail driving hammer and the lower base on the machine head 1 to complete the buttoning action.

[0043] The driving device 9 is used to drive the propulsion shaft 20 to move forward and backward, and a hydraulic cylinder can be used for driving. The hydraulic cylinder is a prior art and will not be elaborated here.

[0044] Furthermore, the walking driving mechanism in an embodiment of the present invention adopts the following structure: As Figure 9 、 Figure 10 shown, the lateral walking positioning bar 30 is located in front of the positioning bar 3. A number of protruding teeth are provided on the lateral walking positioning bar 30, and a tooth opening is formed between two adjacent teeth. The tooth opening is cooperatively arranged with the front end of the positioning bar 3. A first connecting rod 31 and a second connecting rod 32 are arranged outside the positioning bar 3. One end of the first connecting rod 31 is hinged to a connecting rod seat, and the connecting rod seat is fixed on the outer side wall of the machine head 1. One end of the second connecting rod 32 is hinged to the middle of the positioning bar 3, and the other end of the second connecting rod 32 is hinged to the middle of the first connecting rod 31. A limiting block is provided at the front end of the first connecting rod 31, and a convex tooth is provided on the limiting block.

[0045] Specifically, taking the positioning bar 3 in the first tooth opening as the starting point as an example, the convex tooth at the front end of the first connecting rod 31 abuts against the front end of the third tooth at a certain distance to the left of the first tooth opening. When the user pulls the handle rod 11 and the handle rod 11 makes the positioning bar 3 retract backward through the cam 6, the first connecting rod 31 moves closer to the positioning bar 3, and the convex tooth at the front end of the first connecting rod 31 moves away from the lateral walking positioning bar 30. When the user pushes the handle rod 11 and the handle rod 11 makes the positioning bar 3 advance forward through the cam 6, the first connecting rod 31 extends to the left. During the extension process, the convex tooth at the front end of the first connecting rod 31 will abut against the front end of the fourth tooth at a tooth position to the right of the third tooth. At this time, when the positioning bar 3 is continuously pushed forward, but the convex tooth at the front end of the first connecting rod 31 cannot move forward due to being blocked, the reaction force of the first connecting rod 31 pushes the machine head to slide to the right. When the machine head slides to the right by one tooth position, the front end of the positioning bar 3 just inserts into the second tooth opening at a tooth position to the right of the first tooth opening, realizing positioning engagement. At this time, the convex tooth at the front end of the first connecting rod 31 abuts against the front end of the fourth tooth. In this way, through one reciprocating movement of the positioning bar 3, the machine head 1 realizes a displacement of one tooth position along the lateral walking positioning bar 30.

[0046] Furthermore, the driving mechanism of the riveting hammer in an embodiment of the present invention is as Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 、 Figure 16 shown, Figure 11 、 Figure 12 is the state of the driving mechanism of the riveting hammer when the transmission rod 21 is at one end of the transmission track (i.e., the open - non - buttoned state), Figure 13 、 Figure 14For the state of the nail driving hammer transmission mechanism during the startup process of the transmission rod 21 in the transmission track (i.e., the closed - non - buttoned state), at this time, the machine head 1 presses down. There is a nail pressing die 52 on the machine head 1. As the machine head 1 closes downward, the upper and lower sides of the buckle belt are closed and clamped. The nail driving hammer 50 below the buckle belt pushes the nail upward, making the nail pass through the holes reserved on the buckle belt, but the riveting plate 51 is not in place yet, and the buttoning is not completed. Figure 15 , Figure 16 For the state of the nail driving hammer transmission mechanism when the transmission rod 21 is at the other end of the transmission track (i.e., the closed - buttoned state), at this time, through the nail driving hammer transmission mechanism, the riveting plate 51 is pulled towards the inside of the machine head 1, so that the downward - pressing surface of the riveting plate 51 is above the nail on the nail belt lifted by the nail driving hammer 50, and presses the nail downward, making the nail bend and deform and closely adhere to the upper side of the buckle belt, thus completing the buttoning operation.

[0047] The nail driving hammer transmission mechanism is used to control the opening and closing of the riveting plate 51 and the nail driving hammer 50 of the machine head 1. The return spring 48 on the small triangular plate 45 is used to provide the power for resetting the riveting plate 51 of the machine head 1 when the machine head 1 returns from the closed state to the open state.

[0048] The front part of the sliding groove 2 is set as a T - shaped groove. At the same time, auxiliary rib strips 33 are arranged on both sides of the front part of the positioning strip 3, making the buttoning machine equipment have higher precision and stability during the walking process.

[0049] The advantages of this product compared with the handle - rod buttoning machine are as follows: 1. Labor - saving. The handle - rod buttoning machine relies entirely on manual pulling of the connecting rod mechanism to button. Now, a hydraulic cylinder is used to drive. Human effort is only used for the power of walking the machine head and operating the hydraulic cylinder switch, and 4 actions are completed in one reciprocating operation, namely, the machine head walks, precisely positions, opens the hydraulic cylinder, and closes the hydraulic cylinder; 2. Through the drive of the cylinder, belts and nail buttons of high - strength grades can be buttoned; 3. Faster speed and higher efficiency.

Claims

1. An improved drive system for a button sewing machine, comprising a machine head (1), a groove is provided at the front end of the machine head (1), a transverse walking positioning strip is provided on the bottom surface of the groove, and the transverse walking positioning strip and the machine head (1) are arranged as a sliding pair along the length direction of the transverse walking positioning strip. A number of convex teeth are continuously provided on one side of the transverse walking positioning strip facing the machine head (1), and a notch is formed between two adjacent convex teeth. A through hole is provided under the groove of the machine head (1), and a nail punching hammer (50) is arranged in the through hole. The nail punching hammer (50) and the machine head (1) are arranged as a sliding pair along the axial direction of the through hole. The axial direction of the through hole is perpendicular to the length direction of the transverse walking positioning strip. A nail pulling plate (51) is provided above the groove, the nail pulling plate (51) is arranged above the nail punching hammer (50), and the nail pulling plate (51) and the nail punching hammer (50) are respectively connected to the movable ends of a nail punching hammer transmission mechanism. A walking transmission mechanism is provided between the machine head (1) and the transverse walking positioning strip. Characterized in that: The walking transmission mechanism includes a power input end, a connecting shaft (4) is provided on the power input end, a central shaft (5) is provided outside the rear part of the machine head (1), a cam (6) is sleeved outside the central shaft (5), and the cam (6) and the central shaft (5) form a rotating pair. A handle rod (11) is provided on the cam (6), the handle rod (11) is arranged on the side surface of the cam (6) and is located in the rotation plane of the cam (6). An L-shaped driving groove (7) is provided in the cam (6), the connecting shaft (4) extends into the driving groove (7), and the connecting shaft (4) and the driving groove (7) form a sliding pair. A roller (8) is provided at the lower part of the cam (6), the machine head (1) is connected with a driving device (9), the driving device (9) includes a switch (10) and a propulsion shaft (20), the switch (10) is provided behind the cam (6) and faces the roller (8), and the propulsion shaft (20) is connected to the driving end of the nail punching hammer transmission mechanism.

2. An improved drive system for a button sewing machine according to claim 1, Characterized in that: The front end of the propulsion shaft (20) extends into the nose (1). The driving end of the nail punching hammer transmission mechanism is a connecting rod (21). The connecting rod (21) is arranged in a sliding track and forms a sliding pair with the sliding track. The connecting rod (21) is connected to the front end of the propulsion shaft (20). The nail punching hammer transmission mechanism further includes an upper connecting rod (41) and a lower connecting rod (42). One ends of the upper connecting rod (41) and the lower connecting rod (42) are respectively hinged to the connecting rod (21). The other end of the lower connecting rod (42) is hinged to one end of a lower second connecting rod (43). The other end of the lower second connecting rod (43) is hinged to the nail punching hammer (50). The middle of the lower second connecting rod (43) is hinged to the inner wall of the nose (1). The middle of the upper connecting rod (41) is hinged to the first end of a large triangular plate (44). The second end of the large triangular plate (44) is hinged to the inner wall of the nose (1). The third end of the large triangular plate (44) is hinged to the first end of a small triangular plate (45). A return torsion spring (48) is arranged at the first end of the small triangular plate (45). The second end of the small triangular plate (45) is hinged to one end of an upper second connecting rod (46). An arc-shaped sliding groove is arranged at the other end of the upper second connecting rod (46). The other end of the upper connecting rod (41) and the sliding groove of the upper second connecting rod (46) are set as a sliding pair. The third end of the small triangular plate (45) is hinged to one end of an upper third connecting rod (47). The other end of the upper third connecting rod (47) is hinged to the tail of the rivet plate (51). The second end of the large triangular plate (44) is arranged above the middle of the lower second connecting rod (43).

3. An improved transmission system for a button sewing machine according to claim 1, characterized in that: A sliding groove (2) is arranged in the middle of one side of the nose (1). A positioning strip (3) is arranged in the sliding groove (2). The front end of the positioning strip (3) is arranged in cooperation with the notch. The positioning strip (3) forms a sliding pair with the sliding groove (2). The sliding direction of the positioning strip (3) is perpendicular to the length direction of the transverse walking positioning strip. The connecting shaft (4) is arranged outside the rear end of the positioning strip (3). A first connecting rod (31) and a second connecting rod (32) are arranged outside the positioning strip (3). One end of the first connecting rod (31) is hinged to a connecting rod seat, and the connecting rod seat is fixed on the outer side wall of the nose (1). One end of the second connecting rod (32) is hinged to the middle of the positioning strip (3). The other end of the second connecting rod (32) is hinged to the middle of the first connecting rod (31). A limiting block is arranged at the front end of the first connecting rod (31), and a convex tooth is arranged on the limiting block.

4. An improved transmission system for a button sewing machine according to claim 1, characterized in that: The lower part of the described cam (6) is provided with a concave area, and the described roller (8) is arranged on the concave area.

5. An improved transmission system for a button sewing machine according to claim 1, characterized in that: A reset device is arranged inside the described switch (10) or the described switch (10) is of a self-resetting structure.

6. An improved transmission system for a button sewing machine according to claim 1, characterized in that: The described driving device (9) is a hydraulic cylinder.

7. An improved transmission system for a button sewing machine according to claim 3, characterized in that: The front part of the described sliding groove (2) is a T-shaped groove, auxiliary ribs (33) are respectively arranged on the upper and lower sides of the described positioning strip (3), the cross-sectional shape of the described positioning strip (3) matches that of the T-shaped groove, and a connecting hole (34) is arranged at the tail of the described positioning strip (3).

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