Routing mechanism and sewing machine

Abstract

The invention discloses a thread bonding mechanism and a sewing machine, the thread bonding mechanism comprises a first fixing piece, a pressing rod sliding block, a thread passing assembly and a driving shaft, the pressing rod sliding block is movably connected to the first fixing piece through a first guide mechanism, the pressing rod sliding block can move in the height direction, the pressing rod sliding block is provided with an inclined surface, and the inclined surface is provided with a thread passing hole; an angle is formed between the inclined plane and the height direction; the wire passing assembly comprises a second fixing piece connected to the shell, a guide rod which is connected to the second fixing piece and can horizontally move relative to the second fixing piece, a roller which is connected to one end of the guide rod and abuts against the inclined face, and a wire passing device connected to the other end of the guide rod. The driving shaft is in transmission connection with the pressing rod sliding block through a transmission assembly, and the driving shaft can drive the pressing rod sliding block to move in the height direction when rotating around the axis of the driving shaft, so that the inclined face pushes the guide rod to horizontally move, and the thread passing device is driven to horizontally move so as to pull a thread penetrating through the thread passing device. The problem that the thread amount and the cloth thickness are not matched can be effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of sewing machines, in particular to a thread punching mechanism and a sewing machine. Background Art

[0002] Sewing machines are equipped with a thread take-up assembly. The existing thread take-up assembly generally has a long groove extending up and down on the casing of the sewing machine, which allows the thread take-up rod to swing up and down. The thread take-up rod is driven by the upper shaft in the sewing machine to make an up and down reciprocating swing motion with an arc-shaped motion trajectory in the long groove; at the same time, the upper shaft in the sewing machine also drives the needle to make an up and down reciprocating motion in the vertical direction. The thread taking-up function is realized through the coordinated action of the needle and the thread take-up rod.

[0003] Different types of fabrics and fabrics of different thicknesses have different thread requirements, but the current thread take-up rod cannot adapt well to both thin and thick materials at the same time, resulting in a mismatch between the thread amount and the fabric thickness, which can easily cause the upper thread to not be reeled in and the stitches to be unsightly; or insufficient thread can lead to thread breakage.

[0004] Therefore, how to effectively improve the problem of mismatch between thread amount and fabric thickness, so as to achieve beautiful stitches and effectively reduce the problem of thread breakage, is a technical problem that technical personnel in this field currently need to solve. Summary of the Invention

[0005] The object of the present invention is to provide a thread-punching mechanism and a sewing machine, which can effectively improve the problem of mismatch between thread amount and fabric thickness, thereby achieving beautiful stitches and effectively reducing the problem of thread breakage.

[0006] To achieve the above object, the present invention provides a wire bonding mechanism, comprising:

[0007] a first fixing member for connecting to a housing of a sewing machine;

[0008] A pressing rod slider is movably connected to the first fixing member through a first guide mechanism, the pressing rod slider is capable of moving in the height direction, and the pressing rod slider is provided with an inclined surface, which is arranged at an angle to the height direction;

[0009] The wire-passing assembly includes a second fixing member connected to the housing, a guide rod connected to the second fixing member and capable of horizontally moving relative to the second fixing member, a roller connected to one end of the guide rod and abutting against the inclined surface, and a wire-passing device connected to the other end of the guide rod;

[0010] The driving shaft is connected to the clamping rod slider through the transmission assembly. When the driving shaft rotates around its own axis, it can drive the clamping rod slider to move in the height direction, so that the inclined surface pushes the guide rod to move horizontally, and drives the thread guide to move horizontally to pull the suture thread passing through the thread guide.

[0011] In a possible embodiment, the first fixing member is provided with a first through hole, the pressing rod slider is provided with a second through hole, and the axis of the first through hole is collinear with the axis of the second through hole;

[0012] The first guide mechanism includes a sliding rod and a first connecting member. The sliding rod extends in the height direction. After the top of the sliding rod extends into the first through hole, the first connecting member is connected to the sliding rod and the first fixing member to fix the sliding rod relative to the first fixing member. The bottom of the sliding rod is passed through the second through hole, which is used to press the rod slider to slide in the height direction relative to the sliding rod.

[0013] In a possible embodiment, the second fixing member is provided with a horizontally extending third through hole, and the third through hole is used for the guide rod to pass through, so that the guide rod can slide relative to the second fixing member along the extension direction of the third through hole.

[0014] In a possible embodiment, the guide rod is also provided with a limit plate, which is located between the second fixing member and the roller. An elastic member is sleeved on the guide rod, and the two ends of the elastic member respectively abut against the side facing the limit plate and the second fixing member, so as to drive the guide rod to move toward the clamping rod slider so that the roller presses the inclined surface.

[0015] In one possible implementation, the transmission assembly includes:

[0016] A cam assembly is fixedly connected to the drive shaft and is eccentrically arranged relative to the drive shaft;

[0017] The transmission rod comprises a first connecting rod and a second connecting rod which are rotatably connected. The first connecting rod is provided with a first connecting portion which is rotatably connected to the cam assembly, and the second connecting rod is provided with a second connecting portion which is rotatably connected to the pressing rod slider.

[0018] In one possible embodiment, the first connecting rod is provided with a first connecting hole, the second connecting rod is provided with a second connecting hole, and the first connecting rod and the second connecting rod are connected by a fixing assembly, and the fixing assembly includes:

[0019] The second connecting member includes a stopper and a rod connected to the stopper, the rod being used to pass through the first connecting hole and the second connecting hole, and a connecting section being provided at one end of the rod facing away from the stopper;

[0020] The rotating wheel is annular in structure, the rotating wheel is sleeved on the rod body, and the outer ring of the rotating wheel is cooperatively connected with the inner wall of the first connecting hole;

[0021] a retaining ring, sleeved on the rod body and located between the first connecting rod and the second connecting rod, so that the first connecting rod and the second connecting rod are spaced apart;

[0022] The first limiting member is located on a side of the second connecting rod away from the first connecting rod. The first limiting member is cooperatively connected with the connecting section to limit the movement of the first connecting rod and the second connecting rod along the extension direction of the rod body.

[0023] In one possible embodiment, the cam assembly includes:

[0024] The cam body is sleeved on the outer periphery of the drive shaft and is eccentrically arranged relative to the axis of the drive shaft;

[0025] an annular protrusion protruding from the circumferential surface of the cam body, and the annular protrusion is located at one end of the cam body in the extending direction of the drive shaft;

[0026] The limiting plate is detachably connected to the other end of the cam body in the extension direction of the drive shaft. The cross-sectional diameter of the limiting plate perpendicular to the extension direction of the drive shaft is larger than the cross-sectional diameter of the cam body in the extension direction of the drive shaft, so that a mounting groove is formed between the limiting plate and the annular protrusion.

[0027] In one possible embodiment, the first connecting part is assembled on the mounting groove, and the first connecting part is provided with a third connecting hole that cooperates with the circumferential surface of the cam body, and the annular protrusion and the limiting plate can limit the first connecting part from detaching from the cam body in the extension direction of the drive shaft.

[0028] In a possible embodiment, the second connecting part is provided with a fourth connecting hole, the clamping rod slider is provided with a fifth connecting hole corresponding to the fourth connecting hole, the third connecting member is passed through the fourth connecting hole and is detachably connected to the fifth connecting hole, and the second connecting part can rotate around the axis of the fourth connecting hole relative to the third connecting member.

[0029] Based on the above content, the present application also provides a sewing machine, including a thread-binding mechanism as described in any one of the items.

[0030] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects: the pressure rod slider is movably connected to the first fixing part provided on the housing of the sewing machine through a first guide mechanism, the driving shaft can rotate around its own axis, and the pressure rod slider is driven to move in the height direction relative to the first fixing part through the transmission assembly. The pressure rod slider is provided with an inclined surface set at an angle to the height direction. During the movement of the pressure rod slider, the position at which the inclined surface abuts the roller connected to the guide rod changes, pushing the roller and the guide rod to move horizontally relative to the second fixing part, so that the thread guide connected to the guide rod moves horizontally to pull the suture passed through the thread guide, and the thread amount of the suture can be adjusted when the thread take-up rod takes up the thread, so as to effectively improve the problem of mismatch between the thread amount and the thickness of the fabric, thereby achieving beautiful stitches and effectively reducing the problem of thread breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0032] Figure 1 A schematic structural diagram of a wire bonding mechanism provided in an embodiment of the present invention;

[0033] Figure 2 An exploded diagram of a wire bonding mechanism provided in an embodiment of the present invention;

[0034] Figure 3 A schematic structural diagram of a pressing rod slider provided in an embodiment of the present invention;

[0035] Figure 4 This is a structural schematic diagram of a cam body provided by an embodiment of the present invention.

[0036] in:

[0037] 1- thread take-up lever assembly, 2- thread passer, 3- second fixing member, 4- second limiting member, 5- elastic member, 6- guide rod, 7- fourth connecting member, 8- pressing rod slider, 9- first fixing member, 10- slide rod, 11- roller, 12- fifth connecting member, 13- retaining ring, 14- first limiting member, 15- limiting plate, 16- second connecting rod, 17- third connecting member, 18- rotating wheel, 19- second connecting member, 20- first connecting rod, 21- cam body, 22- driving shaft, 23- inclined surface, 24- annular protrusion. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0039] In order to enable those skilled in the art to better understand the solutions of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0040] In the description of the present invention, it should be understood that the terms "upper" and "lower" etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the position or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation of the present invention.

[0041] The object of the present invention is to provide a thread-punching mechanism and a sewing machine, which can effectively improve the problem of mismatch between thread amount and fabric thickness, thereby achieving beautiful stitches and effectively reducing the problem of thread breakage.

[0042] See also Figure 1 and Figure 2 In order to achieve the above-mentioned purpose, the present invention provides a thread-passing mechanism, including a first fixing member 9, a clamping rod slider 8, a thread-passing assembly and a driving shaft 22, the first fixing member 9 is used to connect the shell of the sewing machine; the clamping rod slider 8 is movably connected to the first fixing member 9 through a first guide mechanism, the clamping rod slider 8 can move in the height direction, the height direction refers to the up and down movement direction of the needle, the clamping rod slider 8 is provided with an inclined surface 23, and the inclined surface 23 is set at an angle to the height direction; the thread-passing assembly includes a second fixing member 3 connected to the shell, a guide rod 6 connected to the second fixing member 3 and capable of horizontal movement relative to the second fixing member 3, a roller 11 connected to one end of the guide rod 6 and abutting against the inclined surface 23, and a thread-passing device 2 connected to the other end of the guide rod 6; the driving shaft 22 is connected to the clamping rod slider 8 through a transmission assembly, and when the driving shaft 22 rotates around its own axis, it can drive the clamping rod slider 8 to move in the height direction, so that the inclined surface 23 pushes the guide rod 6 to move horizontally, and drives the thread-passing device 2 to move horizontally to pull the suture passed through the thread-passing device 2. The drive shaft 22 can be provided separately and driven by a motor, or the upper shaft of the sewing machine can be used as the drive shaft 22 and the pressing rod slider 8 can be driven to move by a transmission assembly to reduce costs.

[0043] The pressure rod slider 8 is movably connected to the first fixing part 9 provided on the housing of the sewing machine through a first guide mechanism. The driving shaft 22 can rotate around its own axis and drive the pressure rod slider 8 to move in the height direction relative to the first fixing part 9 through the transmission assembly. The pressure rod slider 8 is provided with an inclined surface 23 set at an angle to the height direction. During the movement of the pressure rod slider 8, the position at which the inclined surface 23 abuts against the roller 11 connected to the guide rod 6 changes, pushing the roller 11 and the guide rod 6 to move horizontally relative to the second fixing part 3, so that the thread guide 2 connected to the guide rod 6 moves horizontally to pull the suture thread passing through the thread guide 2. When the thread take-up rod takes up the thread, the thread amount of the suture can be adjusted to effectively improve the problem of mismatch between the thread amount and the thickness of the fabric, thereby achieving beautiful stitches and effectively reducing the problem of thread breakage.

[0044] It should be noted that the thread take-up rod assembly 1 of the sewing machine includes a transmission module and a thread take-up rod. The upper thread passes through the thread passer 2 and then through the thread take-up rod, and then passes into the needle. The thread take-up rod can be moved downward in the vertical plane to release the thread and move upward to reel in the thread under the drive of the transmission module. When the required thread amount is greater than the normal thread supply of the thread take-up rod, the upper thread can be horizontally pulled through the thread passer 2 during the process of the thread take-up rod moving up to tighten the thread, so that the thread passer 2 can be restored when the thread take-up rod moves down for releasing the thread next time to increase the thread supply; when the required thread amount is less than the normal thread supply of the thread take-up rod, the upper thread can be horizontally pulled through the thread passer 2 during the process of the thread take-up rod moving down to release the thread to reduce the thread supply, and the thread passer 2 can be restored when the thread take-up rod moves up to tighten the thread.

[0045] It can be understood that the two ends of the guide rod 6 are respectively provided with a first mounting plate and a second mounting plate, the first mounting plate is provided with a first mounting hole, the second mounting plate is provided with a second mounting hole, the wire passer 2 is provided with a third mounting hole, the fourth connecting member 7 is passed through the first mounting hole and the third mounting hole and then fixed by the second limiting member 4, so that the wire passer 2 and the guide rod 6 are relatively fixed, and the third mounting hole can be set as a waist-shaped hole to adjust the position of the wire passer 2 relative to the guide rod 6, the roller 11 is provided with a fourth mounting hole, and the fifth connecting member 12 is passed through the fourth mounting hole and then connected to the second mounting hole to limit the roller 11 from disengaging from the guide rod 6, wherein the fourth connecting member 7 and the fifth connecting member 12 can both adopt screws, the second limiting member 4 can adopt a nut adapted to the fourth connecting member 7, and the second mounting hole can adopt a threaded hole adapted to the fifth connecting member 12.

[0046] In one possible embodiment, the first fixing member 9 is provided with a first through hole, and the clamping rod slider 8 is provided with a second through hole, and the axis of the first through hole is collinear with the axis of the second through hole; the first guide mechanism includes a slide rod 10 and a first connecting member, and the slide rod 10 extends in the height direction. After the top of the slide rod 10 extends into the first through hole, the first connecting member is connected to the slide rod 10 and the first fixing member 9. The first connecting member can be but is not limited to a screw to fix the slide rod 10 relative to the first fixing member 9. The bottom of the slide rod 10 is passed through the second through hole, which is used for the clamping rod slider 8 to slide in the height direction relative to the slide rod 10. A limit block can be added to the bottom of the slide rod 10, and the limit block can limit the clamping rod slider 8 from detaching from the bottom of the slide rod 10.

[0047] In one possible embodiment, the second fixing member 3 is provided with a third through hole extending horizontally, and the third through hole is used for the guide rod 6 to pass through, so that the guide rod 6 can slide relative to the second fixing member 3 along the extension direction of the third through hole, that is, the guide rod 6 slides with the third through hole, and the guide rod 6 is also provided with a limit plate, which is located between the second fixing member 3 and the roller 11. An elastic member 5 is sleeved on the guide rod 6, and the two ends of the elastic member 5 respectively abut against the side facing the limit plate and the second fixing member 3. The elastic member 5 can be, but is not limited to, a spring, used to drive the guide rod 6 to move toward the clamping rod slider 8 so that the roller 11 presses the inclined surface 23, and the end of the elastic member 5 facing away from the second fixing member 3 can also be fixed to other positions of the guide rod 6, so as to achieve the above purpose.

[0048] In one possible embodiment, the transmission assembly includes a cam assembly and a transmission rod, the cam assembly is fixedly connected to the drive shaft 22, and the cam assembly is eccentrically arranged relative to the drive shaft 22, so that when the drive shaft 22 rotates to different angles around its own axis, the cam assembly is in different positions; the transmission rod includes a rotatably connected first connecting rod 20 and a second connecting rod 16, the first connecting rod 20 is provided with a first connecting portion rotatably connected to the cam assembly, which is used for the cam assembly to drive the first connecting rod 20 to rotate and move, and the second connecting rod 16 is provided with a second connecting portion rotatably connected to the clamping rod slider 8, which is used for the second connecting rod 16 to pull the clamping rod slider 8 to move.

[0049] Furthermore, the first connecting rod 20 is provided with a first connecting hole, and the second connecting rod 16 is provided with a second connecting hole. The first connecting rod 20 and the second connecting rod 16 are connected by a fixing assembly, and the fixing assembly includes a second connecting member 19, a rotating wheel 18, a retaining ring 13 and a first limit member 14. The second connecting member 19 includes a stopper and a rod body connected to the stopper, and the rod body is used to pass through the first connecting hole and the second connecting hole. The end of the rod body away from the stopper is provided with a connecting section; the rotating wheel 18 is annular in structure, and the rotating wheel 18 is sleeved on the rod body, and the outer ring of the rotating wheel 18 is matched with the inner wall of the first connecting hole. The setting of the rotating wheel 18 can be So that the first connecting rod 20 can rotate relative to the second connecting member 19; the retaining ring 13 is sleeved on the rod body and is located between the first connecting rod 20 and the second connecting rod 16, so that the first connecting rod 20 and the second connecting rod 16 are spaced apart, effectively reducing the mutual wear of the first connecting rod 20 and the second connecting rod 16, and improving the service life of the first connecting rod 20 and the second connecting rod 16; the first limiting member 14 is located on the side of the second connecting rod 16 away from the first connecting rod 20, and the first limiting member 14 is connected with the connecting section. The matching method can be but is not limited to a threaded connection to limit the movement of the first connecting rod 20 and the second connecting rod 16 along the extension direction of the rod body.

[0050] See also Figure 3 and Figure 4The cam assembly includes a cam body 21, an annular protrusion 24 and a limiting piece 15. The cam body 21 is sleeved on the outer periphery of the drive shaft 22 and is eccentrically arranged relative to the axis of the drive shaft 22; the annular protrusion 24 protrudes from the circumferential surface of the cam body 21, and the annular protrusion 24 is located at one end of the cam body 21 in the extending direction of the drive shaft 22. The cam body 21 and the annular protrusion 24 can be integrally arranged as a whole, that is, the cam body 21 and the annular protrusion 24 adopt a stepped boss structure as a whole, and the limiting piece 15 is detachably connected to the other end of the cam body 21 in the extending direction of the drive shaft 22, and the limiting piece 15 is vertical The cross-sectional diameter in the direction of extension of the drive shaft 22 is greater than the cross-sectional diameter of the cam body 21 in the direction of extension of the drive shaft 22, so that a mounting groove is formed between the limiting piece 15 and the annular protrusion 24. The mounting groove is an annular groove as a whole. The first connecting portion is assembled on the mounting groove. The first connecting portion is provided with a third connecting hole that is connected to the circumferential surface of the cam body 21. The annular protrusion 24 and the limiting piece 15 can limit the first connecting portion from being separated from the cam body 21 in the direction of extension of the drive shaft 22. By adjusting the angle at which the cam body 21 is fixed to the drive shaft 22, the timing of the thread passing device 2 can be adjusted to adapt to a variety of fabrics. By adjusting the degree of inclination of the inclined surface 23 relative to the height direction, when the pressure rod slider 8 moves a preset distance in the height direction, the inclined surface 23 pushes the roller 11 to move different distances in the horizontal direction to adapt to fabrics of different thicknesses. That is, by adjusting the degree of inclination of the inclined surface 23 relative to the height direction, the subsequent horizontal movement distance of the thread passing device 2 can be adjusted.

[0051] In one possible embodiment, the second connecting part is provided with a fourth connecting hole, the clamping rod slider 8 is provided with a fifth connecting hole corresponding to the fourth connecting hole, and the third connecting member 17 is passed through the fourth connecting hole and is detachably connected to the fifth connecting hole. The second connecting part can rotate around the axis of the fourth connecting hole relative to the third connecting member 17. The third connecting member 17 can adopt a screw having a threaded section and a smooth section, and the smooth section is used to cooperate with the inner wall of the fourth connecting hole. The fifth connecting hole can adopt a threaded hole for threaded connection with the threaded section to connect the second connecting part to the clamping rod slider 8.

[0052] Based on the above content, the present application also provides a sewing machine, including the above-mentioned thread-punching mechanism. The sewing machine also has all the beneficial effects of the above-mentioned thread-punching mechanism. The remaining structure of the sewing machine can refer to the existing technology and can achieve the above-mentioned purpose.

[0053] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0054] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0055] The principles and implementation methods of the present invention are described herein using specific examples. The description of the above examples is only intended to help understand the method and core concept of the present invention. It should be noted that those skilled in the art may make various improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications also fall within the scope of protection of the present invention.

Claims

1. A wire bonding mechanism, characterized in that: include: A first fixing member (9) for connecting to a housing of a sewing machine; A pressing rod slider (8) is movably connected to the first fixing member (9) via a first guide mechanism, the pressing rod slider (8) is movable in a height direction, and the pressing rod slider (8) is provided with an inclined surface (23), and the inclined surface (23) is arranged at an angle to the height direction; A wire passing assembly, comprising a second fixing member (3) connected to the housing, a guide rod (6) connected to the second fixing member (3) and capable of horizontally moving relative to the second fixing member (3), a roller (11) connected to one end of the guide rod (6) and in contact with the inclined surface (23), and a wire passing device (2) connected to the other end of the guide rod (6); The drive shaft (22) is connected to the clamping rod slider (8) through a transmission assembly. When the drive shaft (22) rotates around its own axis, it can drive the clamping rod slider (8) to move in the height direction, so that the inclined surface (23) pushes the guide rod (6) to move horizontally, and drives the thread guide (2) to move horizontally to pull the suture threaded through the thread guide (2).

2. The wire bonding mechanism according to claim 1, wherein: The first fixing member (9) is provided with a first through hole, the pressing rod slider (8) is provided with a second through hole, and the axis of the first through hole is collinear with the axis of the second through hole; The first guide mechanism includes a slide rod (10) and a first connecting member, wherein the slide rod (10) extends in the height direction, and after the top of the slide rod (10) extends into the first through hole, the first connecting member is connected to the slide rod (10) and the first fixing member (9) so that the slide rod (10) is fixed relative to the first fixing member (9), and the bottom of the slide rod (10) is passed through the second through hole for the clamping rod slider (8) to slide in the height direction relative to the slide rod (10).

3. The wire bonding mechanism according to claim 1, wherein: The second fixing member (3) is provided with a third through hole extending horizontally, and the third through hole is used for the guide rod (6) to pass through, so that the guide rod (6) can slide relative to the second fixing member (3) along the extension direction of the third through hole.

4. The wire bonding mechanism according to claim 1, wherein: The guide rod (6) is further provided with a limit plate, which is located between the second fixing member (3) and the roller (11). An elastic member (5) is sleeved on the guide rod (6), and both ends of the elastic member (5) respectively abut against the side of the limit plate and the second fixing member (3) facing each other, and are used to drive the guide rod (6) to move toward the pressing rod slider (8) so that the roller (11) presses the inclined surface (23).

5. The wire bonding mechanism according to any one of claims 1 to 4, characterized in that: The transmission assembly comprises: a cam assembly fixedly connected to the drive shaft (22) and eccentrically arranged relative to the drive shaft (22); The transmission rod comprises a first connecting rod (20) and a second connecting rod (16) which are rotatably connected, wherein the first connecting rod (20) is provided with a first connecting portion rotatably connected to the cam assembly, and the second connecting rod (16) is provided with a second connecting portion rotatably connected to the pressing rod slider (8).

6. The wire bonding mechanism according to claim 5, characterized in that: The first connecting rod (20) is provided with a first connecting hole, the second connecting rod (16) is provided with a second connecting hole, the first connecting rod (20) and the second connecting rod (16) are connected via a fixing assembly, and the fixing assembly comprises: A second connecting member (19) comprises a stopper and a rod connected to the stopper, the rod being used to penetrate the first connecting hole and the second connecting hole, and a connecting section being provided at one end of the rod facing away from the stopper; A rotating wheel (18) is annular in structure, the rotating wheel (18) is sleeved on the rod body, and the outer ring of the rotating wheel (18) is cooperatively connected with the inner wall of the first connecting hole; a retaining ring (13) sleeved on the rod body and located between the first connecting rod (20) and the second connecting rod (16), so that the first connecting rod (20) and the second connecting rod (16) are spaced apart; A first limiting member (14) is located on a side of the second connecting rod (16) facing away from the first connecting rod (20), and the first limiting member (14) is cooperatively connected with the connecting section to limit the movement of the first connecting rod (20) and the second connecting rod (16) along the extension direction of the rod body.

7. The wire bonding mechanism according to claim 5, characterized in that: The cam assembly comprises: A cam body (21) is sleeved on the outer periphery of the drive shaft (22) and is eccentrically arranged relative to the axis of the drive shaft (22); an annular protrusion (24) protruding from the circumferential surface of the cam body (21), and the annular protrusion (24) is located at one end of the cam body (21) in the extending direction of the drive shaft (22); A limiting plate (15) is detachably connected to the other end of the cam body (21) in the extending direction of the drive shaft (22); the cross-sectional diameter of the limiting plate (15) perpendicular to the extending direction of the drive shaft (22) is larger than the cross-sectional diameter of the cam body (21) in the extending direction of the drive shaft (22), so that a mounting groove is formed between the limiting plate (15) and the annular protrusion (24).

8. The wire bonding mechanism according to claim 7, characterized in that: The first connecting portion is assembled on the mounting groove, and the first connecting portion is provided with a third connecting hole that is matched with the circumferential surface of the cam body (21), and the annular protrusion (24) and the limiting plate (15) can limit the first connecting portion from being separated from the cam body (21) in the extension direction of the drive shaft (22).

9. The wire bonding mechanism according to claim 5, characterized in that: The second connecting portion is provided with a fourth connecting hole, the pressing rod slider (8) is provided with a fifth connecting hole corresponding to the fourth connecting hole, the third connecting member (17) is passed through the fourth connecting hole and is detachably connected to the fifth connecting hole, and the second connecting portion can rotate around the axis of the fourth connecting hole relative to the third connecting member (17).

10. A sewing machine, characterized in that: The invention comprises a wire bonding mechanism as described in any one of claims 1 to 9.

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