Self-puncturing riveter

Abstract

The utility model discloses a self-puncturing riveter which comprises a riveter body, the riveter body comprises a driving part, a C-shaped clamp and a riveter head assembly, the driving part is arranged on the C-shaped clamp, and the riveter head assembly comprises a base, a riveting part and a riveting part, the material belt is arranged on the base in a sliding manner, and a plurality of rivets are arranged on the material belt; the ejector pin is arranged on the base in a sliding mode, and the ejector pin sequentially triggers the rivets under the action of the driving piece; the driving mechanism comprises a linkage piece and a first elastic piece, the linkage piece is arranged on the base in a sliding mode, at least part of the linkage piece is connected with the material belt in a clamped mode, a first inclined face is formed on the linkage piece, and the ejector pin can abut against the first inclined face and slide relative to the first inclined face; one end of the first elastic piece abuts against the linkage piece, and the other end of the first elastic piece abuts against the base. The automatic feeding device can achieve automatic feeding, and is simple in structure, convenient to carry and low in equipment production cost.

Description

Technical Field

[0001] This utility model relates to the field of riveting equipment, and in particular to a self-piercing riveting gun. Background Technology

[0002] Riveting is a machining process that permanently connects two or more components (such as metal plates, plastics, etc.) using rivets. Its principle is to use external force to cause plastic deformation of the rivet, forming a rivet head, thereby firmly fixing the components together. Riveting is widely used in aerospace, construction, automotive manufacturing, shipbuilding, and other fields, and is especially suitable for applications requiring high strength, vibration resistance, or non-removable components.

[0003] Existing riveting equipment typically requires pre-drilling holes between two connecting plates or objects before use. After drilling, the objects are riveted together using specialized equipment. During riveting, rivets need to be manually placed on the objects, which affects the efficiency of riveting and reduces its practicality. Therefore, press riveting equipment is sometimes used for press riveting.

[0004] However, in existing riveting equipment, the rivet drive mechanism and the rivet riveting power mechanism are set up and work separately. The rivet drive mechanism uses a vibratory feeder to push the rivets and orient them, while the rivet riveting works by connecting to other power mechanisms. Both mechanisms require a complete power output scheme, which makes the entire rivet riveting machine complex, inconvenient to carry, difficult to maintain, and has high equipment production costs. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a self-piercing rivet gun that can achieve automatic feeding, has a simple structure, is easy to carry, and has low equipment production costs.

[0006] This utility model is achieved through the following technical solution:

[0007] A self-piercing rivet gun includes a rivet gun body, the rivet gun body including a drive component, a C-clamp, and a gun head assembly, the drive component being disposed on the C-clamp, and the gun head assembly including:

[0008] Base;

[0009] A strip of material is slidably mounted on the base, and a plurality of rivets are arranged on the strip of material.

[0010] A ejector pin is slidably mounted on the base, and the ejector pin sequentially fires multiple rivets under the action of the driving component;

[0011] The driving mechanism includes a linkage and a first elastic member. The linkage is slidably disposed on the base and at least partially engaged with the material belt. A first inclined surface is formed on the linkage. The ejector pin can abut against the first inclined surface and slide relative to it. One end of the first elastic member abuts against the linkage and the other end abuts against the base.

[0012] Furthermore, the base is provided with a through hole and a guide groove. The guide groove is arranged perpendicular to the axial direction of the through hole. The ejector pin is disposed in the through hole and can move along the axial direction of the through hole. The material strip is at least partially disposed in the guide groove and can move along the arrangement direction of the guide groove.

[0013] Furthermore, the linkage also includes a first reset bolt. The linkage includes a snap-fit ​​member and a wedge block that are fixedly connected to each other. The snap-fit ​​member is elastic and at least partially snaps into the material strip. The wedge block is slidably connected to the base, and the first inclined surface is formed on the wedge block.

[0014] Furthermore, the linkage also includes a first reset bolt, one end of which is fixedly connected to the wedge block, and the other end is formed with a nut and exposed outside the base. The first elastic member is sleeved on the first reset bolt, and one end of the first elastic member abuts against the nut and the other end abuts against the base.

[0015] Furthermore, a receiving groove is formed on the base, and the other end of the first elastic member is at least partially disposed in the receiving groove and abuts against the lower wall forming the receiving groove.

[0016] Furthermore, a clearance groove is formed on the wedge, and a first inclined surface is formed on the side wall of the clearance groove. The ejector pin is at least partially accommodated in the clearance groove, and an abutment portion is formed on the ejector pin, which abuts against the first inclined surface.

[0017] Furthermore, the snap-fit ​​component has symmetrical claws, and each claw has a snap-fit ​​portion, which at least partially snaps into the snap-fit ​​hole on the strip.

[0018] Furthermore, a third inclined surface is formed on the snap-fit ​​portion, and the bottom wall forming the snap-fit ​​hole can abut against the third inclined surface.

[0019] Furthermore, the rivet gun body also includes a second elastic element, the output shaft of the drive element is fixedly connected to the ejector pin, and a second reset bolt is fixed on the output shaft. One end of the second elastic element abuts against the second reset bolt, and the other end abuts against the base.

[0020] Furthermore, the rivet is a hexagonal anti-rotation rivet.

[0021] Compared with existing technologies, the advantages of this utility model are:

[0022] 1. By setting up an automatic feeding mechanism, and having the automatic feeding mechanism and the ejector pin share the same power source, the rivet gun has a compact overall structure, is easy to carry, and has low production cost.

[0023] 2. In this utility model, the automatic feeding mechanism is equipped with a flexible latching component, which allows the latching component to repeatedly detach from the material belt and drive the material belt to move when it reciprocates, thereby completing the automatic feeding, thus speeding up the production cycle and improving production efficiency.

[0024] 3. This utility model uses a hexagonal self-piercing anti-rotation rivet to replace the original two rivets, which greatly improves production efficiency, simplifies operation, and makes maintenance convenient. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of a self-piercing rivet gun according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the structure of a gun head assembly according to an embodiment of the present invention;

[0027] Figure 3 This is an exploded view of a gun head assembly according to an embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the base and positioning nozzle according to an embodiment of the present invention;

[0029] Figure 5 for Figure 3 Enlarged view of section A in the middle;

[0030] Figure 6 This is a cross-sectional view of a self-piercing rivet gun according to an embodiment of the present invention;

[0031] Figure 7 This is a cross-sectional view of a self-piercing rivet gun according to an embodiment of the present invention in one state;

[0032] Figure 8 This is a cross-sectional view of another state of the self-piercing rivet gun according to an embodiment of the present invention.

[0033] Labeling Explanation: 1. Handle; 2. Rivet Gun Body; 3. Drive Component; 30. Output Shaft; 31. External Thread; 32. Ejector Screw; 4. C-Pliers; 40. Bottom Mold; 5. Gun Head Assembly; 50. Base; 501. Through Hole; 502. Guide Groove; 503. Opening Groove; 503a. First Side Wall; 503b. Sliding Groove; 502a. Positioning Strip; 504. Positioning Nozzle; 504a. Positioning Hole; 505. Receiving Groove; 505a. Lower Wall; 51. Ejector Pin; 510. Abutment Part; 511. Second Inclined Surface; 52. Drive Mechanism; 53. Linkage component; 53a. Snap-fit ​​component; 530. Material claw; 530a. Snap-fit ​​part; 530b. Third inclined surface; 54. Wedge block; 540. First inclined surface; 541. Clearance groove; 542. Second side wall; 543. Guide block; 55. First reset bolt; 550. Nut; 56. First elastic component; 57. Limiting component; 58. Second reset bolt; 59. Second elastic component; 6. Positioning mold; 7. Material strip; 70. Rivet; 71. Material outlet; 72. Snap-fit ​​hole; 720. Bottom wall; 8. Material A; 9. Material B. Detailed Implementation

[0034] The following detailed, non-limiting description of the utility model's technical solution, in conjunction with preferred embodiments and accompanying drawings, is provided. In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0035] like Figure 1 As shown, a self-piercing riveting gun according to an embodiment of the present invention is used to rivet two thin-walled parts, namely material A 8 and material B 9, together by means of pressure riveting. Further, in this embodiment, material A 8 is a curtain wall aluminum panel, and material B 9 is a corner bracket. The self-piercing riveting gun includes a handle 1 and a riveting gun body 2 fixed to each other. The handle 1 is shaped for easy gripping, and a start button is provided on the handle 1 to control the operation of the riveting gun body 2.

[0036] The riveting gun body 2 includes a drive component 3, a C-shaped clamp 4, and a gun head assembly 5. The drive component 3 is mounted on the C-shaped clamp 4 and drives the gun head assembly 5 to sequentially fire the rivets 70 on the material strip 7. This allows the rivets 70 to sequentially pierce the A part 8 and the B part 9 and finally abut against and deform against the bottom die 40 on the C-shaped clamp 4, thereby riveting the A part 8 and the B part 9 together. Furthermore, to ensure sufficient driving force, the drive component 3 in this embodiment is a high-speed single-acting hydraulic cylinder, which has many advantages such as simple and compact structure, high thrust and efficiency, and low maintenance costs. Simultaneously, the drive component 3 is connected to an ultra-high pressure, portable electric hydraulic pump via an oil pipe to ensure stable power and easy portability.

[0037] Further reference Figure 2 To ensure that the rivet 70 has sufficient pressure to pierce parts A 8 and B 9, the drive component 3 is fixedly mounted on one end of the C-shaped clamp 4. Specifically, the drive component 3 has an external thread 31, which engages with the internal thread on the C-shaped clamp 4 to secure the drive component 3 to the C-shaped clamp 4. Furthermore, the drive component 3 has a set screw 32 at the location forming the external thread 31, and the C-shaped clamp 4 has a hole that mates with the set screw 32, further securing the drive component 3 and the C-shaped clamp 4 and preventing them from loosening or rotating.

[0038] Further reference Figure 3 The gun head assembly 5 includes a feed strip 7, a base 50, an ejector pin 51, and a drive mechanism 52. Multiple rivets 70 are evenly arranged vertically on the feed strip 7. The ejector pin 51 can reciprocate within the base 50 to sequentially eject the multiple rivets 70 on the feed strip 7. Specifically, the drive mechanism 52 moves with the ejector pin 51, and its direction of movement is perpendicular to the direction of movement of the ejector pin 51. This allows the drive mechanism 52 to reciprocate in a direction perpendicular to the direction of movement of the ejector pin 51 as the ejector pin 51 reciprocates, driving the feed strip 7 to move. This ensures that the ejector pin 51 can sequentially abut against the evenly arranged rivets 70 on the feed strip 7, thereby completing automatic feeding.

[0039] Specifically, please refer to Figure 4 The base 50 has a through hole 501 and a guide groove 502, with the guide groove 502 perpendicular to the axial direction of the through hole 501. The material strip 7 is disposed in the guide groove 502 and can move along the arrangement direction of the guide groove 502. At the same time, the cross-section of the material strip 7 is in the shape of "[", so a positioning strip 502a is also provided on the side wall forming the guide groove 502 to further restrict the lateral displacement of the material strip 7, so that the material strip 7 can only make vertical displacement, ensuring the stable operation of the equipment.

[0040] Further reference Figure 5The ejector pin 51 is disposed in the through hole 501, and the driving member 3 can drive the ejector pin 51 to reciprocate along the axial direction of the through hole 501. The driving mechanism 52 includes a linkage member 53 and a first elastic member 56. The linkage member 53 is slidably connected to the base 50 and can move along a direction parallel to the arrangement direction of the guide groove 502. One end of the first elastic member 56 abuts against the linkage member 53 and the other end abuts against the base 50. The linkage member 53 is at least partially engaged with the material strip 7, and a first inclined surface 540 is formed on the linkage member 53. The ejector pin 51 abuts against the first inclined surface 540 and can slide relative to it, so that when the ejector pin 51 moves and abuts against the first inclined surface 540, it can push the linkage member 53 to move.

[0041] Furthermore, the strip 7 is a straight, injection-molded part with a row of evenly arranged nozzles 71 and two rows of evenly arranged snap-fit ​​holes 72 on its top. The two rows of snap-fit ​​holes 72 are symmetrically arranged on both sides of the row of nozzles 71. Each nozzle 71 is fixed with a rivet 70. The linkage 53 can engage with each row of snap-fit ​​holes 72.

[0042] Therefore, the movement and operation of the aforementioned linkage 53 are as follows: the direction away from the drive component 3 is defined as forward, and the opposite direction as backward. When the ejector pin 51 moves forward, it abuts against the first inclined surface 540, thereby pushing the linkage 53 to move vertically downward. At this time, the linkage 53 disengages from one row of feed ports 71 on the material belt 7, and the first elastic element 56 is compressed and stores force. When the linkage 53 continues to move downward and reaches the next row of feed ports 71, it engages with the next row of feed ports 71 again. When the ejector pin 51 moves backward, the first elastic element 56 releases and drives the linkage 53 to move upward, thereby driving the material belt 7 to move upward and completing one feeding cycle. This achieves continuous automatic feeding during each pressing action, greatly improving the equipment's working efficiency.

[0043] Important reference Figure 5 The linkage 53 includes a snap-fit ​​member 53a and a wedge 54 fixedly connected to each other. The snap-fit ​​member 53a is elastic and at least partially snaps into the strip 7. The wedge 54 is at least partially disposed within the base 50 and is slidable relative to each other, and the first inclined surface 540 described above is formed on the wedge 54. Specifically, symmetrical guide blocks 543 protrude from both sides of the wedge 54. An opening groove 503 communicating with the through hole 501 is formed on the base 50, and a sliding groove 503b is recessed on the first sidewall 503a forming the opening groove 503. The wedge 54 is configured to slide within the opening groove 503, and the guide blocks 543 on both sides of the wedge 54 are respectively accommodated in the corresponding sliding grooves 503b, so that the wedge 54 can only slide along the sliding grooves 503b. In this embodiment, the sliding grooves 503b are vertically arranged, so the wedge 54 can move vertically to drive the snap-fit ​​member 53a to move vertically.

[0044] Optionally, a clearance groove 541 is formed on the wedge 54, and the first inclined surface 540 described above is formed on the second sidewall 542 forming the clearance groove 541. The ejector pin 51 can be at least partially accommodated in the clearance groove 541, so that the movement of the ejector pin 51 will not cause additional interference to the wedge 54. Furthermore, a symmetrical abutment portion 510 is formed on the ejector pin 51, and a second inclined surface 511 is formed on the abutment portion 510. The second inclined surface 511 and the first inclined surface 540 can at least partially abut against each other.

[0045] Furthermore, in this embodiment, the snap-fit ​​member 53a is a thin metal sheet with a certain elastic deformation capability, so that when the snap-fit ​​member 53a moves downward, it can deform backward to disengage from the snap-fit ​​hole 72, and when it moves downward to the next row of snap-fit ​​holes 72, it recovers its deformation due to its own elasticity, thereby snapping into the snap-fit ​​hole 72.

[0046] Optionally, the latching member 53a has a pair of symmetrical claws 530, and each claw 530 has a latching portion 530a. At least partially, the two latching portions 530a can engage with the two rows of latching holes 72 on the material strip 7. Furthermore, in this embodiment, a third inclined surface 530b is formed on the latching portion 530a. The bottom wall 720 forming the latching hole 72 can abut against the third inclined surface 530b, allowing the latching member 53a to move along the third inclined surface 530b to deform outwards when the claws 530 move downwards, thereby reducing wear on the latching member 53a and extending the equipment's service life.

[0047] In addition, the linkage 53 also includes a first reset bolt 55. One end of the first reset bolt 55 is fixedly connected to the wedge block 54, and the other end has a nut 550 exposed outside the base 50. A first elastic member 56 is sleeved on the first reset bolt 55, with one end of the first elastic member 56 abutting against the nut 550 and the other end abutting against the base 50. This allows the first elastic member 56 to store force when the linkage 53 moves downward to complete the subsequent reset action, facilitating automatic feeding. Furthermore, in this embodiment, to ensure the stability of the movement of the linkage 53, two first reset bolts 55 are symmetrically arranged on the wedge block 54, and each of the two first reset bolts 55 is sleeved with a first elastic member 56.

[0048] For details, please refer to Figure 3 The base 50 also has a receiving groove 505, which is connected to the opening groove 503 and is used to pass through the opening groove 503. At least one end of the first elastic member 56 is disposed in the receiving groove 505 and abuts against the lower wall 505a that forms the receiving groove 505.

[0049] Optionally, the drive mechanism 52 also includes a limiting member 57, which is fixedly connected to the wedge block 54 and can abut against the base 50 to prevent the drive mechanism 52 from moving out when it is reset upward, thereby improving the safety of the equipment.

[0050] The riveting gun body 2 also includes a second elastic element 59. The output shaft 30 of the drive unit 3 is fixedly connected to the ejector pin 51, and a second reset bolt 58 is fixed on the output shaft 30. One end of the second elastic element 59 abuts against the second reset bolt 58, and the other end abuts against the base 50. This invention provides a second elastic element 59 so that the base 50 and the output shaft 30 are elastically connected. When the output shaft 30 pushes the ejector pin 51 forward, the base 50 is simultaneously pushed forward due to the compression of the second elastic element 59, and abuts against the workpiece to be riveted. When the output shaft 30 moves further forward, the second elastic element 59 is further compressed, preventing the base 50 from continuing to move. This improves the accuracy of the crimping process and allows the equipment to adapt to workpieces with various wall thicknesses.

[0051] Optionally, the gun head assembly 5 also includes a positioning nozzle 504. The positioning nozzle 504 is fixed to the front end of the base 50 and has a positioning hole 504a coaxial with the through hole 501. It is used to position the rivet 70 that has detached from the material strip 7, and to prevent the rivet 70 from tilting due to gravity or other external forces, which would lead to riveting failure.

[0052] Finally, to facilitate the positioning of component B 9 and prevent it from tilting during riveting, a positioning mold 6 is provided on the C-shaped clamp 4. Component B 9 has process holes, and the positioning mold 6 has positioning posts that match the process holes. Before riveting, placing component B 9 onto the positioning posts and engaging it within the process holes ensures the stable and accurate installation of component B 9.

[0053] It is worth noting that in this embodiment, the rivet 70 is a hexagonal anti-rotation rivet, which eliminates the need for pre-drilling of the sheet metal, reducing costs. At the same time, only one rivet 70 needs to be pressed between a B part 9 and an A part 8 to prevent rotation during use, ensuring stability after fastening, thereby further reducing costs and improving work efficiency.

[0054] For detailed operating principles of this device, please refer to [link / reference]. Figures 6 to 8 :

[0055] The operator first clamps part B 9 onto the C-shaped clamp 4, aligning the process hole of part B 9 with the positioning pin on the positioning mold 6. Then, the start button on the handle 1 is pressed, and the drive unit 3 begins operation. The output shaft 30 moves forward along the axis of the through hole 501, pushing the ejector pin 51 forward. At this point, the ejector pin 51 has not yet contacted the wedge block 54. As the ejector pin 51 continues to move forward and contacts a rivet 70 on the material strip 7, pushing the rivet 70 out of the material outlet 71, the ejector pin 51 is now inserted into the material outlet 71, clamping the material strip 7 and restricting its vertical displacement. Next, ejector pin 51 continues to move forward, pushing rivet 70 to engage with bottom mold 40, riveting part B 9 and part A 8 together. Simultaneously, as ejector pin 51 continues to move forward, it abuts against and slides relative to the first inclined surface 540 on wedge block 54, thus pushing wedge block 54 downward, thereby causing snap-fit ​​part 53a to move downward. At this time, because strip 7 is snapped by ejector pin 51, snap-fit ​​part 53a deforms due to its own elasticity and disengages from a row of snap-fit ​​holes 72 on strip 7, engaging with the next row of snap-fit ​​holes 72 during its downward movement. At this time, the first elastic element 56 is in a stored state. Finally, when ejector pin 51 moves backward to disengage from the feed inlet 71, wedge block 54 moves upward under the elastic action of the first elastic element 56, driving snap-fit ​​part 53a upward, ultimately pushing strip 7 snapped with snap-fit ​​part 53a upward, so that the next rivet 70 is conveyed to a position coaxial with through hole 501, completing automatic feeding.

[0056] This invention, by incorporating an automatic feeding mechanism that shares a power source with the ejector pin 51, results in a compact, portable, and low-cost rivet gun. Furthermore, the use of hexagonal self-piercing anti-rotation rivets, replacing the original two rivets, significantly improves production efficiency, simplifies operation, and facilitates maintenance. In addition, the precise design of the automatic feeding mechanism ensures stable rivet delivery, reduces manual intervention, and further enhances work efficiency and product quality. Overall, this invention simplifies the operation process while significantly reducing production costs, bringing substantial economic benefits to enterprises.

[0057] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A self-piercing rivet gun, comprising a rivet gun body (2), the rivet gun body (2) comprising a drive member (3), a C-clamp (4), and a gun head assembly (5), the drive member (3) being disposed on the C-clamp (4), characterized in that, The gun head assembly (5) includes: Base (50); The strip (7) is slidably disposed on the base (50), and a plurality of rivets (70) are arranged on the strip (7); A ejector pin (51) is slidably disposed on the base (50), and the ejector pin (51) sequentially fires multiple rivets (70) under the action of the drive member (3); The driving mechanism (52) includes a linkage (53) and a first elastic member (56). The linkage (53) is slidably disposed on the base (50) and at least partially engaged with the material strip (7). A first inclined surface (540) is formed on the linkage (53). The ejector pin (51) can abut against the first inclined surface (540) and slide relative to it. One end of the first elastic member (56) abuts against the linkage (53) and the other end abuts against the base (50).

2. The self-piercing rivet gun according to claim 1, characterized in that, The base (50) is provided with a through hole (501) and a guide groove (502). The guide groove (502) is arranged perpendicular to the axial direction of the through hole (501). The ejector pin (51) is disposed in the through hole (501) and can move along the axial direction of the through hole (501). The material strip (7) is at least partially disposed in the guide groove (502) and can move along the arrangement direction of the guide groove (502).

3. The self-piercing rivet gun according to claim 1, characterized in that, The linkage (53) includes a snap-fit ​​member (53a) and a wedge (54) that are fixedly connected to each other. The snap-fit ​​member (53a) is elastic and at least partially snaps into the strip (7). The wedge (54) is slidably connected to the base (50), and the first inclined surface (540) is formed on the wedge (54).

4. The self-piercing rivet gun according to claim 3, characterized in that, The linkage (53) further includes a first reset bolt (55), one end of which is fixedly connected to the wedge (54), and the other end is formed with a nut (550) and exposed outside the base (50). The first elastic member (56) is sleeved on the first reset bolt (55), and one end of the first elastic member (56) abuts against the nut (550) and the other end abuts against the base (50).

5. The self-piercing rivet gun according to claim 4, characterized in that, A receiving groove (505) is formed on the base (50), and the other end of the first elastic member (56) is at least partially disposed in the receiving groove (505) and abuts against the lower wall (505a) forming the receiving groove (505).

6. The self-piercing rivet gun according to claim 3, characterized in that, A clearance groove (541) is formed on the wedge (54), and a first inclined surface (540) is formed on the side wall of the clearance groove (541). The ejector pin (51) is at least partially accommodated in the clearance groove (541), and an abutment portion (510) is formed on the ejector pin (51), which abuts against the first inclined surface (540).

7. The self-piercing rivet gun according to claim 3, characterized in that, The snap-fit ​​member (53a) has symmetrical claws (530) formed on it, and the claws (530) have snap-fit ​​portions (530a) formed on them. The snap-fit ​​portions (530a) are at least partially snapped into snap-fit ​​holes (72) on the strip (7).

8. The self-piercing rivet gun according to claim 7, characterized in that, A third inclined surface (530b) is formed on the snap-fit ​​portion (530a), and the bottom wall (720) forming the snap-fit ​​hole (72) can abut against the third inclined surface (530b).

9. The self-piercing rivet gun according to claim 1, characterized in that, The rivet gun body (2) also includes a second elastic element (59). The output shaft (30) of the drive element (3) is fixedly connected to the ejector pin (51), and a second reset bolt (58) is fixed on the output shaft (30). One end of the second elastic element (59) abuts against the second reset bolt (58), and the other end abuts against the base (50).

10. The self-piercing rivet gun according to claim 1, characterized in that, The rivet (70) is a hexagonal anti-rotation rivet.

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