A punching and riveting integrated button sewing machine

Abstract

The present invention discloses a punching and riveting integrated buttoning machine, comprising: a frame, a punching mechanism, a riveting mechanism, and a displacement mechanism. A workbench for carrying fabrics is further provided on the frame. During operation, the punching mechanism first punches holes in the fabric, and then the displacement mechanism drives the riveting mechanism to move above the fabric so that the riveting mechanism and the button holes of the fabric are in a vertically aligned position. Subsequently, the riveting mechanism can rivet the buttons at the button holes of the fabric. Among them, the fabric is in the same position when punching holes and riveting buttons, and there is no need to move the fabric, so the buttoning efficiency and quality can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of button sewing machines, and particularly relates to a punching and riveting integrated button sewing machine. Background Art

[0002] When buttoning on fabric, it is usually necessary to punch holes in the fabric first. If no holes are punched, problems such as fabric wrinkling or loose buttons will occur. For cases with a relatively large number of fabric layers, after punching, the fabric will shift, resulting in increased difficulty in button sewing.

[0003] Existing automatic feeding button sewing machines can punch holes in the fabric first and then move the fabric to the button sewing station for button sewing operations, which not only affects the button sewing efficiency but also results in poor button sewing quality.

[0004] Therefore, how to provide a button sewing machine to improve the button sewing quality and efficiency is a technical problem that those skilled in the art need to solve currently. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a punching and riveting integrated button sewing machine, which can effectively improve the button sewing quality and efficiency.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A punching and riveting integrated button sewing machine includes: a frame, a punching mechanism, a riveting mechanism, and a shifting mechanism. A workbench for carrying fabric is provided on the frame; the punching mechanism is used to punch holes in the fabric; the shifting mechanism is used to drive the riveting mechanism to move above the fabric so that the riveting mechanism is vertically aligned with the button holes in the fabric; the riveting mechanism is used to rivet buttons at the button holes in the fabric.

[0008] Preferably, it further includes a pressure ring and a pressure driving device. The pressure driving device is used to drive the pressure ring to press the fabric tightly on the workbench, and the punching mechanism is used to punch holes in the fabric through the pressure ring.

[0009] Preferably, the shifting mechanism includes a swinging motor and a swing arm. One end of the swing arm is connected to the swinging motor through a vertically arranged rotating shaft, and the other end is connected to the riveting mechanism. The swinging motor is used to drive the swing arm to swing around the rotating shaft, thereby driving the riveting mechanism to swing.

[0010] Preferably, a punching lower die, a riveting lower die and a transposition device are provided on the frame. The punching lower die is used to support the fabric, and the riveting lower die is used to clamp the lower buckle. A through hole is provided on the workbench. The punching lower die and the riveting lower die are arranged below the workbench. During punching, the transposition device is used to drive the punching lower die to align with the through hole, and during riveting, the transposition device is used to drive the riveting lower die to align with the through hole.

[0011] Preferably, the transposition device includes a transposition power part, a sliding seat and a sliding rail. The punching lower die and the riveting lower die are arranged on the sliding seat. The sliding seat is slidably connected to the sliding rail. The transposition power part is used to drive the sliding seat to slide horizontally on the sliding rail.

[0012] Preferably, a lifting device is further included for driving the punching lower die and the riveting lower die to move up and down.

[0013] Preferably, a first mounting hole and a second mounting hole are provided on the sliding seat. The punching lower die is slidably connected up and down in the first mounting hole. A first compression spring is sleeved on the lower part of the punching lower die. The lower end of the first compression spring is connected to a position near the bottom end of the punching lower die, and the upper end is connected to the bottom of the sliding seat. The riveting lower die is slidably connected up and down in the second mounting hole. A second compression spring is sleeved on the lower part of the riveting lower die. The lower end of the second compression spring is connected to a position near the bottom end of the riveting lower die, and the upper end is connected to the bottom of the sliding seat. The lifting device includes a horizontal driving part and a slider. The slider is provided with an inclined surface. The horizontal driving part is used to drive the slider to move so as to move upward by contacting the inclined surface with the lower ends of the punching lower die and the riveting lower die.

[0014] Preferably, the punching mechanism includes a punching power part, a punching upper shaft, a punching shaft seat, a punching upper die, a punching compression spring and a punching limit pin. The punching upper shaft is vertically inserted into the punching shaft seat. A punching chute is provided on the side wall of the punching upper shaft along its axial direction. The punching limit pin is horizontally inserted into the punching chute. The two ends of the punching limit pin are connected to the punching shaft seat. The punching compression spring is arranged in the inner cavity of the punching upper shaft. The two ends of the punching compression spring respectively abut against the top of the inner cavity and the punching limit pin. The punching power part is used to drive the punching upper shaft to move up and down in the punching shaft seat. The punching compression spring is used to control the upward reset of the punching upper shaft. The punching upper die is connected to the lower end of the punching upper shaft.

[0015] Preferably, the riveting mechanism includes a riveting power unit, a riveting upper shaft, a riveting upper die, a riveting compression spring, and a riveting limit pin. The riveting upper shaft is vertically inserted into the end of the swing arm. A riveting sliding groove is provided on the side wall of the riveting upper shaft along its axial direction. The riveting limit pin is horizontally inserted into the riveting sliding groove, and both ends of the riveting limit pin are connected to the swing arm. The riveting compression spring is arranged in the inner cavity of the riveting upper shaft, and both ends of the riveting compression spring respectively abut against the top of the inner cavity and the riveting limit pin. The riveting power unit is used to drive the up and down movement of the riveting upper shaft, the riveting compression spring is used to control the upward reset of the riveting upper shaft, and the riveting upper die is connected to the lower end of the riveting upper shaft.

[0016] Preferably, the frame includes a base, a left side plate, and a right side plate. The left side plate and the right side plate are respectively arranged on both sides of the base and extend upward. The workbench is arranged on the upper part of the base. The punching mechanism, the riveting mechanism, and the shifting mechanism are arranged between the left side plate and the right side plate.

[0017] Compared with the prior art, the above technical solution has the following advantages:

[0018] A punching and riveting integrated button nailing machine provided by the present invention includes: a frame, a punching mechanism, a riveting mechanism, and a shifting mechanism. A workbench for carrying fabric is also provided on the frame. During operation, the punching mechanism first punches holes in the fabric, and then the shifting mechanism drives the riveting mechanism to move above the fabric so that the riveting mechanism and the button hole of the fabric are vertically aligned. Subsequently, the riveting mechanism can rivet the button at the button hole of the fabric. The fabric is in the same position during punching and riveting the button without moving the fabric, so the button nailing efficiency and quality can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0020] Figure 1 It is a schematic structural diagram of a punching and riveting integrated button nailing machine provided by a specific embodiment of the present invention after removing the right side plate;

[0021] Figure 2 It is a schematic structural diagram of the frame provided by the embodiment of the present invention;

[0022] Figure 3 It is a schematic structural diagram of the punching mechanism provided by the embodiment of the present invention;

[0023] Figure 4 Partial sectional view schematic diagram of the punching mechanism provided by the embodiment of the present invention;

[0024] Figure 5 Structural schematic diagram of the riveting mechanism and the displacement mechanism provided by the embodiment of the present invention;

[0025] Figure 6 Sectional view schematic diagram of the riveting mechanism provided by the embodiment of the present invention;

[0026] Figure 7 Structural schematic diagram of the lower die, the transposition device and the base provided by the embodiment of the present invention;

[0027] Figure 8 Structural schematic diagram of the lower die and the slider provided by the embodiment of the present invention;

[0028] Figure 9 Sectional view structural schematic diagram of the lower die provided by the embodiment of the present invention;

[0029] Figure 10 Structural schematic diagram of the blank holding mechanism, the workbench and the frame provided by the embodiment of the present invention.

[0030] The reference numerals are as follows:

[0031] 1 is the frame, 101 is the base, 102 is the left side plate, 103 is the right side plate, 104 is the support seat, 105 is the punching power part support, 106 is the punching mechanism support, 107 is the riveting shaft seat, 108 is the workbench;

[0032] 2 is the punching mechanism, 201 is the punching upper shaft, 202 is the punching chute, 203 is the punching shaft seat, 204 is the punching upper die, 205 is the punching limit pin, 206 is the punching compression spring, 207 is the punching copper bushing, 208 is the punching power part, 209 is the guide rail;

[0033] 3 is the riveting mechanism, 301 is the riveting upper shaft, 302 is the riveting limit pin, 303 is the riveting upper die, 304 is the riveting compression spring, 305 is the riveting copper bushing;

[0034] 4 is the displacement mechanism, 401 is the swing arm, 402 is the rotating shaft, 403 is the bearing;

[0035] 5 is the transposition device, 501 is the sliding seat, 502 is the sliding rail;

[0036] 601 is the riveting lower die, 602 is the second compression spring, 603 is the lower die copper bushing;

[0037] 701 is the punching lower die, 702 is the first compression spring;

[0038] 8 is the lifting device, 801 is the slider;

[0039] 9 is the blank holding device, 901 is the blank holding driving device, and 902 is the blank holding ring;

[0040] 10 is the loading mechanism. Specific embodiments

[0041] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] Please refer to Figures 1 to 10 。

[0043] A punching and riveting integrated buttoning machine provided by an embodiment of the present invention includes: a frame 1, a punching mechanism 2, a riveting mechanism 3, and a shifting mechanism 4. Among them, the punching mechanism 2, the riveting mechanism 3, and the shifting mechanism 4 can be arranged on the frame 1, and a workbench 108 for carrying the fabric is further arranged on the frame 1. During work, the punching mechanism 2 first punches holes in the fabric, and then the shifting mechanism 4 drives the riveting mechanism 3 to move above the fabric so that the riveting mechanism 3 and the buttonhole of the fabric are in a vertically aligned position. Subsequently, the riveting mechanism 3 can rivet the button at the buttonhole of the fabric. Among them, the fabric is in the same position during punching and riveting the button, and there is no need to move the fabric, so the buttoning efficiency and quality can be improved.

[0044] Among them, please refer to Figure 2 , the frame 1 includes a base 101, a left side plate 102, and a right side plate 103. The left side plate 102 and the right side plate 103 are respectively arranged on both sides of the base 101 and extend upward. The workbench 108 is arranged on the upper part of the base 101, and the punching mechanism 2, the riveting mechanism 3, and the shifting mechanism 4 are arranged between the left side plate 102 and the right side plate 103, that is, the punching mechanism 2, the riveting mechanism 3, and the shifting mechanism 4 are located on the upper part of the base 101. In addition, a loading mechanism 10 can be arranged on both sides of the base 101. The loading mechanism 10 is used to provide the upper button and the lower button for riveting. For the specific working principle of the loading mechanism 10, reference can be made to the prior art and will not be elaborated here.

[0045] Furthermore, please refer to Figure 10, the button sewing machine further includes a material pressing device, which includes a material pressing ring 902 and a material pressing driving device 901. The material pressing driving device 901 is preferably a cylinder. It can be arranged on a connecting plate, preferably a connecting plate bent at an obtuse angle. The upper end of the connecting plate is connected to the telescopic end of the cylinder, and the lower end extends outward and is provided with a material pressing ring 902. Through the outwardly extending material pressing ring 902, it can play a role in making way for the punching mechanism 2. Before punching, the pressure driving device drives the material pressing ring 902 to press the fabric tightly on the workbench 108, and then the punching head of the punching mechanism 2 passes through the pressure ring to punch holes in the fabric. Among them, through the material pressing ring 902, the stability of the fabric can be improved, which is convenient for the punching mechanism 2 to punch holes.

[0046] Specifically, please refer to Figure 5 , the displacement mechanism 4 includes a swing motor and a swing arm 401. One end of the swing arm 401 is connected to the swing motor through a vertically arranged rotating shaft 402, and the other end is connected to the riveting mechanism 3. The rotating shaft 402 can be installed on the riveting shaft seat 107 through a bearing 403. The riveting shaft seat 107 is arranged on the frame 1. Specifically, the riveting shaft seat 107 can be arranged between the left side plate 102 and the right side plate 103. The swing motor drives the rotating shaft 402 to rotate, thereby driving the swing arm 401 to swing around the rotating shaft 402, and then driving the riveting mechanism 3 to swing. In addition to controlling the displacement of the riveting mechanism 3 by swinging, the displacement of the riveting mechanism 3 can also be controlled by horizontal movement. For example, the riveting mechanism 3 is driven by a horizontal cylinder or a linear motor.

[0047] Specifically, please refer to Figure 7 , the frame 1 is provided with a lower die and a transposition device 5. The lower die includes a punching lower die 701 and a riveting lower die 601. The punching lower die 701 is used to support the fabric so that the punching mechanism 2 can punch holes in the area of the fabric supported by the punching lower die 701; the riveting lower die 601 is used to clamp the lower button. The workbench 108 is provided with through holes. The workbench 108 is preferably of a shell structure and can cover the workbench 108. The punching lower die 701 and the riveting lower die 601 are arranged below the workbench 108. When punching, the transposition device 5 drives the punching lower die 701 to align with the through holes; when riveting, the transposition device 5 drives the riveting lower die 601 to align with the through holes.

[0048] Specifically, the transposition device 5 includes a transposition power unit, a sliding seat 501, a sliding rail 502. The punching lower die 701 and the riveting lower die 601 are arranged on the sliding seat 501. The sliding seat 501 is slidably connected to the sliding rail 502. The transposition power unit is used to drive the sliding seat 501 to slide horizontally on the sliding rail 502. The sliding rail 502 is arranged on the frame 1. Two sliding rails 502 can be provided. The left and right sides of the sliding seat 501 are slidably connected to the sliding rails 502 to improve the stability of the horizontal translation of the sliding seat 501. In addition to controlling the transposition of the punching lower die 701 and the riveting lower die 601 by translation, the transposition of the two can also be controlled by rotation. For example, a turntable is provided. The punching lower die 701 and the riveting lower die 601 are arranged along the circumferential direction of the turntable. The rotation of the turntable driven by the rotation power unit can achieve the transposition of the punching lower die 701 and the riveting lower die 601.

[0049] Further, it further includes a lifting device 8 for driving the punching lower die 701 and the riveting lower die 601 to move up and down. When punching is required, the lifting device 8 can control the punching lower die 701 to move up to extend into the through hole of the workbench 108. After punching is completed, the punching lower die 701 is controlled to move down. When riveting is required, the lifting device 8 controls the riveting lower die 601 to move up to extend into the through hole of the workbench 108. After riveting is completed, the riveting lower die 601 is controlled to move down.

[0050] Specifically, the sliding seat 501 is provided with a first mounting hole and a second mounting hole. The punching lower die 701 is connected to the first mounting hole in a vertically sliding manner. A first compression spring 702 is sleeved on the lower part of the punching lower die 701. The lower end of the first compression spring 702 is connected to a position near the bottom end of the punching lower die 701. An annular boss for supporting the first compression spring 702 can be provided on the outer periphery of the bottom of the punching lower die 701. The upper end of the first compression spring 702 is connected to the bottom of the sliding seat 501. The riveting lower die 601 is connected to the second mounting hole in a vertically sliding manner. A second compression spring 602 is sleeved on the lower part of the riveting lower die 601. The lower end of the second compression spring 602 is connected to a position near the bottom end of the riveting lower die 601. Similarly, an annular boss for supporting the second compression spring 602 can be provided on the outer periphery of the bottom of the riveting lower die 601. The upper end of the second compression spring 602 is connected to the bottom of the sliding seat 501. A lower die copper sleeve 603 is provided in the first mounting hole and the second mounting hole to reduce the wear of the punching lower die 701 and the riveting lower die 601. In the natural state, the punching lower die 701 is reset downward under the action of the first compression spring 702, and the riveting lower die 601 is reset downward under the action of the second compression spring 602. The lifting device 8 includes a horizontal driving part and a slider 801. The slider 801 is provided with an inclined surface. The horizontal driving part is used to drive the slider 801 to move so as to move upward by contacting the inclined surface with the lower ends of the punching lower die 701 and the riveting lower die 601. A support seat 104 is provided at the bottom of the frame 1. The slider 801 is horizontally slidably connected to the support seat 104. In addition, the lower parts of the punching lower die 701 and the riveting lower die 601 can be accommodated inside the support seat 104. In addition to controlling the punching lower die 701 and the riveting lower die 601 to rise through the inclined surface, a lifting force can also be directly provided by a power device such as a telescopic cylinder or an oil cylinder.

[0051] In an embodiment of the present invention, please refer to Figure 3 and Figure 4, the punching mechanism 2 includes a punching power unit 208, a punching upper shaft 201, a punching shaft seat 203, a punching upper die 204, a punching compression spring 206, and a punching limit pin 205. The connection relationships of the components of the punching mechanism 2 are as follows: The punching upper shaft 201 is inserted vertically into the punching shaft seat 203. A punching chute 202 is provided on the side wall of the punching upper shaft 201 along its axial direction. The punching limit pin 205 is inserted horizontally into the punching chute 202, and both ends of the punching limit pin 205 are connected to the punching shaft seat 203, which can be connected by threads. The punching compression spring 206 is arranged in the inner cavity of the punching upper shaft 201, and both ends of the punching compression spring 206 abut against the top of the inner cavity and the punching limit pin 205 respectively. The punching upper die 204 is connected to the lower end of the punching upper shaft 201. A punching copper sleeve 207 can be arranged in the punching shaft seat 203 to reduce the wear of the punching upper shaft 201. The punching power unit 208 is located above the punching upper shaft 201 and is separated from each other. The punching power unit 208 can be installed on the brackets of the left side plate 102 and the right side plate 103 through the punching power unit bracket 105. During punching, the telescopic end of the punching power unit 208 moves downward and controls the downward movement of the punching upper shaft 201 by contacting the punching upper shaft 201. After punching is completed, the telescopic end of the punching power unit 208 moves upward, and the punching upper shaft 201 can be reset upward under the action of the punching compression spring 206. In addition, in order to facilitate the control of the horizontal movement of the punching upper shaft 201, a punching mechanism 2 bracket 106 can be provided. The punching mechanism 2 bracket 106 is fixed between the left side plate 102 and the right side plate 103. The punching shaft seat 203 is slidably connected to the bottom of the punching mechanism 2 bracket 106 through a guide rail 209. The punching shaft seat 203 can be driven by a power device such as a linear motor or a cylinder. The telescopic end of the punching power unit 208 can pass through the bottom of the punching power unit bracket 105 and contact the punching upper shaft 201.

[0052] Specifically, please refer to Figure 6, the riveting mechanism 3 includes a riveting power unit, a riveting upper shaft 301, a riveting upper die 303, a riveting compression spring 304, and a riveting limit pin 302. The connection relationships of the components of the riveting mechanism 3 are as follows: The riveting upper shaft 301 is vertically inserted into the end of the swing arm 401. A riveting chute is provided on the side wall of the riveting upper shaft 301 along its axial direction. The riveting limit pin 302 is horizontally inserted into the riveting chute, and both ends of the riveting limit pin 302 are connected to the swing arm 401, which can be connected by threads. The riveting compression spring 304 is arranged in the inner cavity of the riveting upper shaft 301, and both ends of the riveting compression spring 304 are respectively abutted against the top of the inner cavity and the riveting limit pin 302. The riveting upper die 303 is connected to the lower end of the riveting upper shaft 301. A riveting copper bushing 305 can be arranged inside the end of the swing arm 401 to reduce the wear of the riveting upper shaft 301. During riveting, the riveting upper die 303 grabs the upper buckle, the riveting power unit drives the riveting upper shaft 301 to move downward, and then drives the riveting upper die 303 to move downward, so that the upper buckle and the lower buckle can be riveted on the fabric. After riveting is completed, the telescopic end of the riveting power unit moves upward, and the riveting upper shaft 301 is reset upward under the action of the riveting compression spring 304.

[0053] In this specification, the various embodiments are described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0054] The above has introduced in detail a punching and riveting integrated button nailing machine provided by the present invention. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A punching and riveting integrated button machine, characterized in that, Including: A frame, a punching mechanism, a riveting mechanism, and a shifting mechanism. A workbench for carrying fabric is provided on the frame. The punching mechanism is used for punching holes in the fabric. The shifting mechanism is used to drive the riveting mechanism to move above the fabric so that the riveting mechanism and the buttonhole of the fabric are vertically aligned. The riveting mechanism is used to rivet buttons at the buttonholes of the fabric. It further includes a pressure ring and a pressure driving device. The pressure driving device is used to drive the pressure ring to press the fabric tightly on the workbench, and the punching mechanism is used to punch holes in the fabric through the pressure ring. A punching lower die, a riveting lower die, and a transposition device are provided on the frame. The punching lower die is used to support the fabric, and the riveting lower die is used to clamp the lower button. A through hole is provided on the workbench. The punching lower die and the riveting lower die are arranged below the workbench. During punching, the transposition device is used to drive the punching lower die to align with the through hole. During riveting, the transposition device is used to drive the riveting lower die to align with the through hole. The transposition device includes a transposition power part, a sliding seat, and a slide rail. The punching lower die and the riveting lower die are arranged on the sliding seat. The sliding seat is slidably connected to the slide rail. The transposition power part is used to drive the sliding seat to slide horizontally on the slide rail. It further includes a lifting device for driving the punching lower die and the riveting lower die to move up and down. The sliding seat is provided with a first mounting hole and a second mounting hole. The punching lower die is slidably connected up and down in the first mounting hole. A first compression spring is sleeved on the lower part of the punching lower die. The lower end of the first compression spring is connected to a position near the bottom end of the punching lower die, and the upper end is connected to the bottom of the sliding seat. The riveting lower die is slidably connected up and down in the second mounting hole. A second compression spring is sleeved on the lower part of the riveting lower die. The lower end of the second compression spring is connected to a position near the bottom end of the riveting lower die, and the upper end is connected to the bottom of the sliding seat. The lifting device includes a horizontal driving part and a slider. The slider is provided with an inclined surface. The horizontal driving part is used to drive the slider to move so as to move upward by contacting the lower ends of the punching lower die and the riveting lower die through the inclined surface.

2. The button sewing machine according to claim 1, wherein, The shifting mechanism includes a swing motor and a swing arm. One end of the swing arm is connected to the swing motor through a vertically arranged rotating shaft, and the other end is connected to the riveting mechanism. The swing motor is used to drive the swing arm to swing around the rotating shaft, thereby driving the riveting mechanism to swing.

3. The button sewing machine according to claim 1, characterized in that, The punching mechanism includes a punching power unit, a punching upper shaft, a punching shaft seat, a punching upper die, a punching compression spring, and a punching limit pin. The punching upper shaft is vertically inserted into the punching shaft seat. Along the axial direction of the side wall of the punching upper shaft, there is a punching chute. The punching limit pin is horizontally inserted into the punching chute, and both ends of the punching limit pin are connected to the punching shaft seat. The punching compression spring is arranged in the inner cavity of the punching upper shaft, and both ends of the punching compression spring respectively abut against the top of the inner cavity and the punching limit pin. The punching power unit is used to drive the punching upper shaft to move up and down, the punching compression spring is used to control the upward reset of the punching upper shaft, and the punching upper die is connected to the lower end of the punching upper shaft.

4. The button sewing machine according to claim 2, characterized in that, The riveting mechanism includes a riveting power unit, a riveting upper shaft, a riveting upper die, a riveting compression spring, and a riveting limit pin. The riveting upper shaft is vertically inserted into the end of the swing arm. Along the axial direction of the side wall of the riveting upper shaft, there is a riveting chute. The riveting limit pin is horizontally inserted into the riveting chute, and both ends of the riveting limit pin are connected to the swing arm. The riveting compression spring is arranged in the inner cavity of the riveting upper shaft, and both ends of the riveting compression spring respectively abut against the top of the inner cavity and the riveting limit pin. The riveting power unit is used to drive the riveting upper shaft to move up and down, the riveting compression spring is used to control the upward reset of the riveting upper shaft, and the riveting upper die is connected to the lower end of the riveting upper shaft.

5. The button sewing machine according to any one of claims 1 to 4, characterized in that, The machine frame includes a base, a left side plate, and a right side plate. The left side plate and the right side plate are respectively arranged on both sides of the base and extend upward. The workbench is arranged on the upper part of the base. The punching mechanism, the riveting mechanism, and the shifting mechanism are arranged between the left side plate and the right side plate.

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