Button identifying and adjusting device of riveting machine

Abstract

The utility model belongs to the technical field of riveting machines, and particularly relates to a button identifying and adjusting device of a riveting machine, which comprises a machine frame, the material receiving mechanism is mounted on the mounting plate; the adjusting mechanism is mounted on the mounting plate; the recognition mechanism is installed on the rack, movably arranged above the material receiving mechanism and used for recognizing the upper buckles on the material receiving mechanism and driving the adjusting mechanism to work; the material receiving mechanism at least comprises a fixed shaft which is rotationally connected to the mounting plate, and the lower end of the fixed shaft is movably connected with the adjusting mechanism; the connecting and buckling die is movably connected to the upper end of the fixing shaft, and the upper end of the connecting and buckling die is provided with a fixing position; after the recognition mechanism recognizes the upper button in the fixing position, the recognition mechanism drives the adjusting mechanism to work to drive the fixing shaft to rotate, the fixing shaft drives the button connecting die to rotate, adjustment of the upper button is achieved, and the orientation of characters and patterns of the upper button sewn to cloth is consistent with the set direction. And the overall attractiveness of the clothes after the upper buckle is sewn on the clothes is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of riveting machines, in particular to a button identification and adjustment device for riveting machines. Background Art

[0002] Riveting machines, also known as button-attaching machines, are widely used in garment factories and leather bag processing companies. They are mainly used to attach various types of buttons to knitted garments, down jackets, jeans, shoes and hats, leather and other products.

[0003] For example, a multifunctional riveting machine disclosed in Chinese patent CN202022767934.1 includes a frame, a lower die mechanism, a punching and upper buckle picking mechanism, a lower buckle feeding mechanism and an upper buckle feeding mechanism; the lower buckle feeding mechanism conveys the lower buckle to the lower die mechanism, the upper buckle feeding mechanism conveys the upper buckle to the bottom of the punching and upper buckle picking mechanism, the punching and upper buckle picking mechanism punches the fabric and fixes the upper buckle and the lower buckle on the fabric;

[0004] The riveting machine still has some shortcomings. There is a lack of equipment for identifying and adjusting the buttons before sewing them to clothes, which makes it impossible to adjust the direction of the buttons. Since the buttons of existing buttons are generally printed with text and patterns, after the buttons are fixed to the fabric, the buttons of some buttons cannot be rotated on the fabric, which causes the surface text and pattern of the buttons sewn to the fabric to be oriented incorrectly, affecting the appearance of the clothes. Summary of the invention

[0005] The utility model aims to provide a button recognition and adjustment device for a riveting machine, which recognizes the text and pattern of the button in the butt-jointing mechanism through a recognition mechanism, and drives the adjustment mechanism to work, so that the adjustment mechanism drives the fixed shaft to rotate to adjust the button in the butt-jointing mold, so that the direction of the button is always consistent with the set direction, thereby improving the problem that the riveting machine cannot recognize and adjust the button direction.

[0006] The purpose of the utility model is achieved in this way:

[0007] A button recognition and adjustment device for a riveting machine, comprising:

[0008] a frame having a mounting plate thereon;

[0009] A material receiving mechanism, which is mounted on the mounting plate and is used to receive the delivered upper buckle and fix the upper buckle;

[0010] An adjusting mechanism, which is mounted on the mounting plate and is used to drive the material receiving mechanism to rotate;

[0011] An identification mechanism, which is mounted on the frame and movably placed above the material receiving mechanism, is used to identify the buckle on the material receiving mechanism and drive the adjustment mechanism to work;

[0012] The material receiving mechanism at least comprises:

[0013] A fixed shaft, which is rotatably connected to the mounting plate, and the lower end of the fixed shaft is movably connected to the adjustment mechanism;

[0014] A buckle connection mold is movably connected to the upper end of the fixed shaft, and the upper end of the buckle connection mold has a fixed position;

[0015] When the identification mechanism identifies the make-up in the fixed position, the identification mechanism drives the adjustment mechanism to work, thereby driving the fixed shaft to rotate, and the fixed shaft drives the fastening mold to rotate to achieve adjustment of the make-up.

[0016] Preferably, the buckle mold comprises:

[0017] The left mold has a limiting convex edge and an avoidance groove;

[0018] The right mold has two limiting convex edges and two avoidance grooves;

[0019] An elastic tightening ring, which is sleeved on the left mold and the right mold;

[0020] When the left mold and the right mold are both installed to the upper end of the fixed shaft, the fixed position is formed between the limiting convex edge 1 and the limiting convex edge 2, and the avoidance groove 1 and the avoidance groove 2 are used to avoid the raised portion of the buckle.

[0021] Preferably, the buckle mold comprises:

[0022] A buckle seat, which is movably connected to the upper end of the fixed shaft, and the upper end of the buckle seat is provided with a limit groove and a third avoidance groove, and the bottom of the limit groove is connected to the third avoidance groove;

[0023] A magnetic attraction member is arranged at the bottom of the limiting groove and is used to attract the upper buckle.

[0024] Preferably, an arc-shaped groove 1 is provided on the outer wall of the left mold, and an arc-shaped groove 2 is provided on the outer wall of the right mold;

[0025] When the left mold and the right mold are both installed on the upper end of the fixed shaft through the limiting member, the arc groove 1 and the arc groove 2 form an annular groove, and the elastic clamping ring is sleeved in the annular groove.

[0026] Preferably, an elastic member is sleeved on the fixed shaft, the upper end of the elastic member movably abuts against the lower end of the left mold and the lower end of the right mold, and the lower end of the elastic member movably abuts against the mounting plate;

[0027] The left mold is provided with a first limiting hole, and the right mold is provided with a second limiting hole; the limiting member is passed through the upper end of the fixed shaft, and the two ends of the limiting member are slidably placed in the first limiting hole and the second limiting hole respectively;

[0028] When the material taking mechanism of the riveting machine takes the upper button in the fixed position, the left mold and the right mold overcome the elastic force of the elastic member and move downward on the fixed shaft, so that the upper button is separated from the fixed position.

[0029] Preferably, an avoidance opening 1 is formed between the front end of the limiting convex edge 1 and the front end of the limiting convex edge 2, for realizing the buckle movement to the fixed position.

[0030] Preferably, an avoidance opening 2 is formed between the rear ends of the first limiting convex edge and the second limiting convex edge for avoiding the material blocking claws of the feeding mechanism of the button sewing machine.

[0031] Preferably, a mounting hole is provided on the mounting plate, a rotating member is provided in the mounting hole, and a limiting platform is provided on the fixed shaft;

[0032] When the fixed shaft is inserted into the rotating member, the limiting platform movably abuts against the upper end of the rotating member to limit the fixed shaft from being separated from the mounting plate.

[0033] Preferably, the adjustment mechanism comprises:

[0034] A driving member mounted on the mounting plate;

[0035] A driving wheel, which is mounted on the driving shaft of the driving member;

[0036] A driven wheel mounted on the lower end of the fixed shaft;

[0037] A synchronous belt, which is sleeved on the driving wheel and the driven wheel;

[0038] When the driving member drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through the synchronous belt, and the driven wheel drives the fixed shaft to rotate.

[0039] Preferably, the mounting plate is provided with an adjustment hole and an avoidance hole, the driving member is connected with a fixing member, an end of the fixing member passes through the adjustment hole and is connected to the driving member, and a driving shaft of the driving member is movably placed in the avoidance hole;

[0040] The position of the fixing member in the adjusting hole is adjusted, thereby adjusting the position of the driving member on the mounting plate, thereby adjusting the tightness of the synchronous belt.

[0041] Compared with the prior art, the utility model has the following outstanding and beneficial technical effects:

[0042] The utility model recognizes the text and pattern of the buttons in the material connection mechanism through the recognition mechanism. When the direction of the button is incorrect, the recognition mechanism drives the adjustment mechanism to work, so that the adjustment mechanism drives the fixed shaft to rotate to rotate and adjust the button in the button mold, so that the direction of the text and pattern of the buttons sewn on the cloth is consistent with the set direction, thereby improving the overall aesthetics of the clothes after the buttons are sewn on the clothes. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a structural diagram of embodiment 1.

[0044] Figure 2 This is one of the partial structural diagrams of the first embodiment.

[0045] Figure 3 This is the second schematic diagram of the partial structure of the first embodiment.

[0046] Figure 4 This is the third schematic diagram of the partial structure of the first embodiment.

[0047] Figure 5 This is the fourth schematic diagram of the partial structure of the first embodiment.

[0048] Figure 6 This is an exploded view of the first embodiment.

[0049] Figure 7 It is a cross-sectional view of the first embodiment.

[0050] Figure 8 It is a structural schematic diagram of the buckle mold of embodiment 2.

[0051] Figure numerals: 1, frame; 11, mounting plate; 111, mounting hole; 112, adjustment hole; 113, avoidance hole; 2, material receiving mechanism; 21, fixed shaft; 211, limit table; 22, buckle mold; 221, fixed position; 222, avoidance opening 1; 223, avoidance opening 2; 23, left mold; 231, limit convex edge 1; 232, avoidance groove 1; 233, arc groove 1; 234, limit hole 1; 24, right mold; 241, limit convex edge 2; 242, avoidance Groove 2; 243, arc-shaped groove 2; 244, limiting hole 2; 25, elastic clamping ring; 26, limiting member; 27, elastic member; 28, buckle seat; 281, limiting groove; 282, avoidance groove 3; 29, magnetic member; 3, adjustment mechanism; 31, driving member; 32, driving wheel; 33, driven wheel; 34, synchronous belt; 35, fixing member; 4, identification mechanism; 5, rotating member; 7, buckle; 71, raised portion; 8, material taking mechanism; 9, feeding mechanism; 91, material blocking claw. DETAILED DESCRIPTION

[0052] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0053] Embodiment 1:

[0054] Combination Figure 1 and Figure 2 A button recognition and adjustment device for a riveting machine comprises: a frame 1, the middle of which is connected to a mounting plate 11 by screws; a material receiving mechanism 2, which is mounted on the mounting plate 11 and is used to receive and fix the delivered upper button; an adjustment mechanism 3, which is mounted on the mounting plate 11 and is used to drive the material receiving mechanism 2 to rotate; an identification mechanism 4, which is mounted on the frame 1 and movably placed above the material receiving mechanism 2, is used to identify the upper button on the material receiving mechanism 2 and drive the adjustment mechanism 3 to work; when the identification mechanism 4 identifies the orientation of the text and pattern of the upper button, the identification mechanism 4 drives the adjustment mechanism 3 to work, and the adjustment mechanism 3 drives the material receiving mechanism 2 to rotate, so that the upper button in the material receiving mechanism 2 rotates, so that the text and pattern of the button are adjusted to a predetermined position, and the overall aesthetics of the clothes after the upper button is sewn to the clothes is ensured.

[0055] Specific as Figure 3 The material receiving mechanism 2 includes: a fixed shaft 21, which is rotatably connected to the mounting plate 11, and the lower end of the fixed shaft 21 is movably connected to the adjustment mechanism 3; a buckle mold 22, which is movably connected to the upper end of the fixed shaft 21, and the upper end of the buckle mold 22 has a fixed position 221, and the fixed position 221 is used to clamp or adsorb and fix the upper buckle; when the recognition mechanism 4 recognizes the upper buckle in the fixed position 221, the recognition mechanism 4 drives the adjustment mechanism 3 to work, thereby driving the fixed shaft 21 to rotate, and the fixed shaft 21 drives the buckle mold 22 to rotate, thereby realizing rotation adjustment of the upper buckle.

[0056] Combination Figure 4 , Figure 6 and Figure 7 The buckle mold 22 includes: a left mold 23, which has a limiting convex edge 231 and an avoidance groove 232; a right mold 24, which has a limiting convex edge 241 and a avoidance groove 242; an elastic clamping ring 25, which is a rubber ring or a silicone ring or a spring, and the elastic clamping ring 25 is sleeved on the left mold 23 and the right mold 24, and is used to make the left mold 23 and the right mold 24 have a tendency to approach each other and can clamp the buckle 7; when the left mold 23 and the right mold 24 are both installed to the fixed shaft 21, a fixed position 221 is formed between the limiting convex edge 1 231 and the limiting convex edge 241, and the limiting convex edge 1 231 and the limiting convex edge 241 can abut against the side wall of the upper buckle 7 under the action of the elastic clamping ring 25, thereby clamping the upper buckle 7, and the avoidance groove 1 232 and the avoidance groove 242 are used to avoid the raised portion 71 of the upper buckle 7, so that the upper buckle 7 can slide into the fixed position 221 and be clamped and fixed by the limiting convex edge 1 231 and the limiting convex edge 241.

[0057] Combination Figure 6 and Figure 7 The outer wall of the left mold 23 is provided with an arc-shaped groove 1 233, and the outer wall of the right mold 24 is provided with an arc-shaped groove 243; when the left mold 23 and the right mold 24 are both installed to the upper end of the fixed shaft 21 through the limiting member 26 (the limiting member 26 is a rod-shaped member such as a limiting rod or a limiting pin), the arc-shaped groove 1 233 and the arc-shaped groove 243 form an annular groove, and an elastic clamping ring 25 is sleeved in the annular groove. The annular groove prevents the elastic clamping ring 25 from moving up and down or falling off on the outer side of the left mold 23 and the right mold 24, and the annular groove ensures that the elastic clamping ring 25 can be stably sleeved on the outer side of the left mold 23 and the right mold 24;

[0058] Combination Figure 6 and Figure 7 The annular groove is located at the lower end side of the buckle mold 22, so that the upper end of the buckle mold 22 can be opened or retracted and the upper buckle can slide into the fixed position 221. Specifically, the arc groove 1 233 is located at the lower end side of the left mold 23, and the arc groove 243 is located at the lower end side of the right mold 24, so that the limiting convex edge 1 231 at the upper end of the left mold 23 and the limiting convex edge 241 of the right mold 24 can move away from each other when the upper buckle slides in, thereby realizing the upper buckle sliding into the fixed position 221, which is convenient for loading the upper buckle. At the same time, under the action of the elastic tightening ring 25, the limiting convex edge 1 231 and the limiting convex edge 241 can clamp the upper buckle.

[0059] Combination Figure 6 and Figure 7 The material receiving mechanism 2 further includes: an elastic member 27, which is a spring or a disc spring, and the elastic member 27 is sleeved on the fixed shaft 21, and the upper end of the elastic member 27 movably abuts against the lower end of the left mold 23 and the lower end of the right mold 24, and the lower end of the elastic member 27 movably abuts against the upper end of the mounting plate 11; a limiting hole 234 is provided on the left mold 23, and a limiting hole 244 is provided on the right mold 24; a limiting member 26 is provided on the upper end of the fixed shaft 21, and the two ends of the limiting member 26 are respectively slidably placed in the limiting hole 234 and the second limiting hole 244; when the picking mechanism 8 of the riveting machine takes the upper button in the fixed position 221, the left mold 23 and the right mold 24 overcome the elastic force of the elastic member 27 and move downward on the fixed shaft 21, so that the upper button is separated from the fixed position 221. The elastic member 27 facilitates the upper button to separate from the fixed position 221, which facilitates the picking of materials by the picking mechanism 8. The moving range of the left mold 23 and the right mold 24 on the fixed shaft 21 is the sliding range of the limiting member 26 in the limiting hole 1 234 and the limiting hole 244.

[0060] In this solution, a through hole is horizontally opened at the upper end of the fixed shaft 21, the middle part of the limit member 26 is inserted into the through hole, and the two ends of the limit member 26 extend out of the through hole. In actual production, two limit members 26 can be used. Through holes are opened opposite to each other at the upper end of the fixed shaft 21, and a limit member 26 is connected to each through hole. The limit members 26 on both sides of the fixed shaft 21 are respectively placed in limit hole 1 234 and limit hole 244.

[0061] Combination Figure 3 and Figure 4 An avoidance opening 222 is formed between the front end of the limiting convex edge 1 231 and the front end of the limiting convex edge 241 for realizing the buckle movement to the fixed position 221.

[0062] Combination Figure 3 and Figure 4 A second avoidance opening 223 is formed between the rear ends of the first limiting convex edge 231 and the second limiting convex edge 241 for avoiding the blocking claw 91 of the feeding mechanism 9 of the button sewing machine.

[0063] like Figure 7 As shown, a mounting hole 111 is opened on the mounting plate 11, and a rotating part 5 is arranged in the mounting hole 111. The rotating part 5 is a bearing or a sleeve, and a limiting platform 211 is arranged on the fixed shaft 21; when the lower end of the fixed shaft 21 is inserted into the rotating part 5, the limiting platform 211 movably abuts against the upper end of the rotating part 5; when the material picking mechanism 8 presses down the left mold 23 and the right mold 24 to pick up the material, the limiting platform 211 prevents the fixed shaft 21 from separating from the mounting plate 11.

[0064] Specific as Figure 5 As shown, the adjustment mechanism 3 includes: a driving member 31, which is a motor or a rotary cylinder, and the driving member 31 is installed on the mounting plate 11; a driving wheel 32, which is installed on the driving shaft of the driving member 31; a driven wheel 33, which is installed at the lower end of the fixed shaft 21; a synchronous belt 34, which is sleeved on the driving wheel 32 and the driven wheel 33; when the driving member 31 drives the driving wheel 32 to rotate, the driving wheel 32 drives the driven wheel 33 to rotate through the synchronous belt 34, and the driven wheel 33 drives the fixed shaft 21 to rotate.

[0065] like Figure 5 As shown, an adjustment hole 112 and an avoidance hole 113 are provided on the mounting plate 11, and a fixing member 35 is connected to the driving member 31. The fixing member 35 is a bolt or a screw, and the end of the fixing member 35 passes through the adjustment hole 112 and is connected to the driving member 31. The driving shaft of the driving member 31 is movably placed in the avoidance hole 113; the position of the driving member 31 on the mounting plate 11 is adjusted by adjusting the position of the fixing member 35 in the adjustment hole 112, thereby adjusting the distance between the driving shaft of the driving member 31 and the fixed shaft 21, thereby adjusting the tightness of the synchronous belt 34.

[0066] The identification mechanism 4 is an intelligent industrial camera, which uses a CCD camera to identify the text and pattern on the buckle, and controls the operation of the adjustment mechanism 3 through the control center. The specific structure of the identification mechanism 4 refers to an intelligent industrial camera disclosed in Chinese patent CN201820071029.2, which will not be repeated here.

[0067] The identification mechanism 4 is located behind the material picking mechanism 8. When the material picking mechanism 8 feeds the upper buckle, the identification mechanism 4 moves forward with the material picking mechanism 8 and is placed above the fixed position 221, so that the industrial camera can identify the text and pattern of the upper buckle in the fixed position 221.

[0068] Embodiment 2:

[0069] The design of this embodiment is basically the same as that of the first embodiment, except that:

[0070] like Figure 8 As shown, the buckle mold 22 includes: a buckle seat 28, which is movably connected to the upper end of the fixed shaft 21, and the upper end of the buckle seat 28 is provided with a limit groove 281 and an avoidance groove 282, the bottom of the limit groove 281 is connected with the avoidance groove 282, the limit groove 281 is used to abut the side end of the upper buckle 7, and the avoidance groove 282 is used to avoid the raised portion 71 of the upper buckle 7; a magnetic suction member 29, which is arranged at the bottom of the limit groove 281, and is used to absorb the upper buckle of the metal button, thereby adsorbing and fixing the upper buckle in the limit groove 281, when the fixed shaft 21 rotates, the buckle seat 28 drives the upper buckle 7 to rotate through the magnetic suction member 29, thereby adjusting the text and pattern of the upper buckle.

[0071] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

[0072] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0073] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0074] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

Claims

1. A button recognition and adjustment device for a riveting machine, characterized in that: include: A frame (1) having a mounting plate (11) thereon; A material receiving mechanism (2) is mounted on the mounting plate (11) and is used to receive the delivered upper buckle and fix the upper buckle; An adjustment mechanism (3) mounted on the mounting plate (11) and used to drive the material receiving mechanism (2) to rotate; an identification mechanism (4), which is mounted on the frame (1) and movably disposed above the material receiving mechanism (2), and is used to identify the buckle on the material receiving mechanism (2) and drive the adjustment mechanism (3) to work; The material receiving mechanism (2) at least comprises: A fixed shaft (21) which is rotatably connected to the mounting plate (11), and the lower end of the fixed shaft (21) is movably connected to the adjustment mechanism (3); A buckle connection mold (22) is movably connected to the upper end of the fixed shaft (21), and the upper end of the buckle connection mold (22) has a fixed position (221); When the identification mechanism (4) identifies the make-up in the fixed position (221), the identification mechanism (4) drives the adjustment mechanism (3) to work, thereby driving the fixed shaft (21) to rotate, and the fixed shaft (21) drives the buckle mold (22) to rotate, thereby achieving adjustment of the make-up.

2. The button recognition and adjustment device for a riveting machine according to claim 1, characterized in that: The buckle connection mold (22) comprises: The left mold (23) has a limiting convex edge (231) and an avoidance groove (232) thereon; The right mold (24) has a second limiting convex edge (241) and a second avoidance groove (242); An elastic tightening ring (25) is sleeved on the left mold (23) and the right mold (24); When the left mold (23) and the right mold (24) are both mounted on the upper end of the fixed shaft (21), the fixed position (221) is formed between the limiting convex edge 1 (231) and the limiting convex edge 2 (241), and the avoiding groove 1 (232) and the avoiding groove 2 (242) are used to avoid the buckled protrusion.

3. The button recognition and adjustment device for a riveting machine according to claim 1, characterized in that: The buckle connection mold (22) comprises: A buckle seat (28) is movably connected to the upper end of the fixed shaft (21), and a limit groove (281) and a third avoidance groove (282) are provided at the upper end of the buckle seat (28), and the bottom of the limit groove (281) is communicated with the third avoidance groove (282); A magnetic attraction member (29) is arranged at the bottom of the limiting groove (281) and is used to attract the upper buckle.

4. The button recognition and adjustment device for a riveting machine according to claim 2, characterized in that: The outer wall of the left mold (23) is provided with an arc-shaped groove 1 (233), and the outer wall of the right mold (24) is provided with an arc-shaped groove 2 (243); When the left mold (23) and the right mold (24) are both mounted on the upper end of the fixed shaft (21) via the stopper (26), the arc-shaped groove 1 (233) and the arc-shaped groove 2 (243) form an annular groove, in which the elastic clamping ring (25) is sleeved.

5. The button recognition and adjustment device for a riveting machine according to claim 4, characterized in that: An elastic member (27) is sleeved on the fixed shaft (21), the upper end of the elastic member (27) movably abuts against the lower end of the left mold (23) and the lower end of the right mold (24), and the lower end of the elastic member (27) movably abuts against the mounting plate (11); The left mold (23) is provided with a first limiting hole (234), and the right mold (24) is provided with a second limiting hole (244); the limiting member (26) is passed through the upper end of the fixed shaft (21), and two ends of the limiting member (26) are slidably placed in the first limiting hole (234) and the second limiting hole (244) respectively; When the material taking mechanism of the riveting machine takes the upper button in the fixed position (221), the left mold (23) and the right mold (24) overcome the elastic force of the elastic member (27) and move downward on the fixed shaft (21), so that the upper button is separated from the fixed position (221).

6. A button identification and adjustment device for a riveting machine according to claim 2, 4 or 5, characterized in that: An escape opening 1 (222) is formed between the front end of the limiting convex edge 1 (231) and the front end of the limiting convex edge 2 (241) for realizing the buckling movement into the fixed position (221).

7. The button recognition and adjustment device for a riveting machine according to claim 6, characterized in that: A second avoidance opening (223) is formed between the rear ends of the first limiting convex edge (231) and the second limiting convex edge (241) for avoiding the material blocking claws of the feeding mechanism of the button sewing machine.

8. A button identification and adjustment device for a riveting machine according to claim 1 or 2 or 3 or 4 or 5 or 7, characterized in that: The mounting plate (11) is provided with a mounting hole (111), a rotating member (5) is arranged in the mounting hole (111), and a limiting platform (211) is arranged on the fixed shaft (21); When the fixed shaft (21) is inserted into the rotating member (5), the limiting platform (211) movably abuts against the upper end of the rotating member (5) to limit the fixed shaft (21) from being separated from the mounting plate (11).

9. A button recognition and adjustment device for a riveting machine according to any one of claims 1 to 5, characterized in that: The adjustment mechanism (3) comprises: A driving member (31) mounted on the mounting plate (11); A driving wheel (32) mounted on a driving shaft of the driving member (31); A driven wheel (33) mounted on the lower end of the fixed shaft (21); A synchronous belt (34) sleeved on the driving wheel (32) and the driven wheel (33); When the driving member (31) drives the driving wheel (32) to rotate, the driving wheel (32) drives the driven wheel (33) to rotate through the synchronous belt (34), and the driven wheel (33) drives the fixed shaft (21) to rotate.

10. The button recognition and adjustment device for a riveting machine according to claim 9, characterized in that: The mounting plate (11) is provided with an adjustment hole (112) and an avoidance hole (113); the driving member (31) is connected with a fixing member (35); an end of the fixing member (35) passes through the adjustment hole (112) and is connected to the driving member (31); and a driving shaft of the driving member (31) is movably placed in the avoidance hole (113); By adjusting the position of the fixing member (35) in the adjusting hole (112), the position of the driving member (31) on the mounting plate (11) is adjusted, thereby adjusting the tightness of the synchronous belt (34).

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