Self-puncturing riveter

Abstract

The invention 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; 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 realize automatic feeding, and is simple in structure, convenient to carry and low in equipment production cost.

Description

Technical Field

[0001] The present invention relates to the field of riveting equipment, and in particular to a self-piercing rivet gun. Background Art

[0002] Riveting is a mechanical processing technology for permanently connecting two or more components (such as metal plates, plastics, etc.) through rivets. Its principle is to plastically deform the rivet by an external force to form a rivet head, thereby firmly fixing the components together. Riveting is widely used in the fields of aerospace, construction, automobile manufacturing, shipbuilding, etc., especially suitable for occasions requiring high strength, vibration resistance or non-detachable.

[0003] When the existing riveting equipment is usually in use, it is necessary to drill holes in advance between two connecting plates or connecting objects. After drilling, riveting and fixing are carried out through special equipment. When riveting is in use, it is necessary for workers to place rivets on the connecting objects, which affects the efficiency of riveting and reduces the practicability of riveting. Therefore, sometimes press riveting equipment is used for press riveting.

[0004] However, in the existing press riveting equipment, the rivet driving mechanism and the rivet press riveting power mechanism are separately arranged and operate. Among them, the rivet driving mechanism uses a vibrating disk to push the rivets for feeding and orient the rivets, and the rivet press riveting works by connecting other power mechanisms. Both mechanisms require a complete set of power output schemes, resulting in a complex mechanical structure of the entire rivet press riveting, inconvenient to carry, difficult to maintain, and high equipment production cost. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a self-piercing rivet gun, which can realize automatic feeding, has a simple structure, is convenient to carry, and has a low equipment production cost.

[0006] The present invention is realized through the following technical solutions:

[0007] A self-piercing rivet gun includes a rivet gun body, the rivet gun body includes a driving member, a C-shaped clamp and a gun head assembly, the driving member is arranged on the C-shaped clamp, and the gun head assembly includes:

[0008] A base;

[0009] A tape, slidably arranged on the base, and a plurality of rivets are arranged on the tape;

[0010] A thimble, slidably arranged on the base, and the thimble sequentially fires a plurality of the rivets under the action of the driving member;

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

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

[0013] Furthermore, the linkage part also includes a first reset bolt, and the linkage part includes a clamping part and a wedge block fixedly connected to each other, the clamping part is elastic and is at least partially clamped with 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 member 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 a lower wall forming the receiving groove.

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

[0017] Furthermore, the clamping member is formed with symmetrical material claws, and the material claws are formed with clamping portions, and the clamping portions are at least partially clamped with the clamping holes on the material strip.

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

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

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

[0021] Compared with the prior art, the advantages of the present invention are as follows:

[0022] 1. By providing an automatic feeding mechanism which shares the same power source with the thimble, the overall structure of the riveting gun is compact, easy to carry and has low production cost.

[0023] 2. In the automatic feeding mechanism of the present invention, by providing an elastic clamping member, when the clamping member reciprocates, it can repeatedly disengage from the strip and drive the strip to move, thereby completing automatic feeding, and further accelerating the production rhythm and improving the production efficiency.

[0024] 3. The present invention uses a hexagonal self-piercing anti-rotation rivet to replace the original two rivets, greatly improving the production efficiency, being easy to operate and convenient to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

[0029] Figure 5 is Figure 3 an enlarged view of part A in

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

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

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

[0033] Marking description: 1. Handle; 2. Riveting gun body; 3. Driving part; 30. Output shaft; 31. External thread; 32. Set screw; 4. C-shaped clamp; 40. Bottom die; 5. Gun head assembly; 50. Base; 501. Through hole; 502. Guide groove; 503. Opening groove; 503a. First side wall; 503b. Sliding groove; 502a. Positioning bar; 504. Positioning nozzle; 504a. Positioning hole; 505. Accommodating groove; 505a. Lower wall; 51. Thimble; 510. Contact part; 511. Second inclined surface; 52. Driving mechanism; 53. Linking part; 53a. Clamping part; 530. Material claw; 530a. Clamping part; 530b. Third inclined surface; 54. Wedge block; 540. First inclined surface; 541. Avoidance groove; 542. Second side wall; 543. Guide block; 55. First reset bolt; 550. Nut; 56. First elastic part; 57. Limiting part; 58. Second reset bolt; 59. Second elastic part; 6. Positioning die; 7. Tape; 70. Rivet; 71. Material opening; 72. Clamping hole; 720. Bottom wall; 8. Part A; 9. Part B. Detailed implementation mode

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

[0035] As Figure 1 shown, a self-piercing riveting gun according to an embodiment of the present invention is used to rivet two thin-walled parts, namely part A 8 and part B 9, by means of press riveting. Further, in this embodiment, part A 8 is a curtain wall aluminum plate and part B 9 is an angle code. The self-piercing riveting gun includes a handle 1 and a riveting gun body 2 that are fixedly connected to each other. The handle 1 is set in a shape convenient for human hands to hold, 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 driving member 3, a C-shaped clamp 4, and a gun head assembly 5. The driving member 3 is arranged on the C-shaped clamp 4 and is used to drive the gun head assembly 5 to work in sequence to strike the rivets 70 on the strip 7, so that the rivets 70 can pierce the A workpiece 8 and the B workpiece 9 in sequence and finally abut against and deform with the bottom die 40 on the C-shaped clamp 4, thereby riveting the A workpiece 8 and the B workpiece 9. In addition, in order to ensure that the driving member 3 has sufficient driving force, in this embodiment, the driving member 3 is a high-speed single-acting oil cylinder, which has many advantages such as simple and compact structure, high thrust and efficiency, and low maintenance cost. At the same time, the driving member 3 is connected to an ultra-high pressure and portable electric hydraulic pump through an oil pipe to ensure its stable power and easy portability.

[0037] Further referring to Figure 2 , in order to ensure that the rivet 70 has sufficient pressure to pierce the A workpiece 8 and the B workpiece 9, the driving member 3 is fixedly arranged at one end of the C-shaped clamp 4. Specifically, an external thread 31 is provided on the driving member 3, and the external thread 31 can be matched with the internal thread on the C-shaped clamp 4 to fix the driving member 3 and the C-shaped clamp 4. In addition, a set screw 32 is also provided at the part of the driving member 3 where the external thread 31 is formed, and a hole for matching the set screw 32 is provided on the C-shaped clamp 4, so as to further fix the driving member 3 and the C-shaped clamp 4 and prevent the two from loosening and rotating.

[0038] Further referring to Figure 3 , the gun head assembly 5 includes a strip 7, a base 50, a thimble 51, and a driving mechanism 52. Among them, a plurality of rivets 70 are uniformly arranged on the strip 7 in the vertical direction. The thimble 51 can reciprocate in the base 50 to push out the plurality of rivets 70 on the strip 7 in sequence. Specifically, the driving mechanism 52 can move along with the movement of the thimble 51, and the moving direction is perpendicular to the moving direction of the thimble 51. Therefore, when the thimble 51 reciprocates, the driving mechanism 52 can reciprocate in the direction perpendicular to the moving direction of the thimble 51 to drive the strip 7 to move, so that the thimble 51 can abut against the rivets 70 uniformly arranged on the strip 7 in sequence, thereby completing automatic feeding.

[0039] Specifically, with emphasis on referring to Figure 4 , a through hole 501 and a guide groove 502 are provided on the base 50. The guide groove 502 is perpendicular to the axial direction of the through hole 501. The strip 7 is arranged 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 strip 7 is in the shape of "[", so a positioning strip 502a is also convexly provided on the side wall forming the guide groove 502 to further limit the lateral displacement of the strip 7, so that the strip 7 can only perform vertical displacement and ensure the stable operation of the equipment.

[0040] Further referring to Figure 5, the ejector pin 51 is disposed within the through-hole 501, and the driving member 3 is capable of driving 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 is movable along a direction parallel to the direction in which the guiding groove 502 is arranged. One end of the first elastic member 56 abuts against the linkage member 53, and the other end abuts against the base 50. At least a part of the linkage member 53 is engaged with the 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 is relatively slidable, such that when the ejector pin 51 moves and abuts against the first inclined surface 540, the linkage member 53 can be pushed to move.

[0041] In addition, the strip 7 is a straight strip-shaped part formed by integral injection molding, and a row of uniformly arranged material openings 71 and two rows of uniformly arranged engaging holes 72 are formed above. The two rows of engaging holes 72 are symmetrically arranged on both sides of a row of material openings 71. A rivet 70 is fixed in each material opening 71. The linkage member 53 can be engaged with each row of engaging holes 72.

[0042] Therefore, the movement and working mode of the above-mentioned linkage member 53 are as follows: Define the direction away from the driving member 3 as the front, and the opposite direction as the rear. When the ejector pin 51 moves forward, the ejector pin 51 abuts against the first inclined surface 540, thereby pushing the linkage member 53 to move vertically downward. At this time, the linkage member 53 disengages from the engagement with one row of material openings 71 of the strip 7, and the first elastic member 56 is compressed and stores energy; when the linkage member 53 continues to move downward and reaches the next row of material openings 71, it engages with the next row of material openings 71 again. When the ejector pin 51 moves backward, the first elastic member 56 releases and drives the linkage member 53 to move upward, thereby driving the strip 7 to move upward to complete one feeding. Thus, continuous automatic feeding can be achieved for each crimping operation, greatly improving the working efficiency of the equipment.

[0043] Focus on referring to Figure 5 , the linkage member 53 includes a clamping member 53a and a wedge block 54 which are fixedly connected to each other. The clamping member 53a is elastic and at least a part of it is engaged with the strip 7. At least a part of the wedge block 54 is disposed within the base 50 and is slidable relative to each other, and the above-mentioned first inclined surface 540 is formed on the wedge block 54. Specifically, symmetric guiding blocks 543 protrude from both sides of the wedge block 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 side wall 503a forming the opening groove 503. The wedge block 54 is arranged to be slidable within the opening groove 503, and the guiding blocks 543 on both sides of the wedge block 54 are respectively received within the corresponding sliding grooves 503b, so that the wedge block 54 can only slide along the sliding groove 503b. In this embodiment, the sliding groove 503b is vertically arranged, so the wedge block 54 can move vertically to drive the clamping member 53a to move vertically.

[0044] Optionally, an avoidance groove 541 is formed on the wedge block 54. The first inclined surface 540 is formed on the second side wall 542 of the avoidance groove 541. The ejector pin 51 can be at least partially received in the avoidance groove 541, so that the movement of the ejector pin 51 will not cause additional interference to the wedge block 54. A symmetrical abutting portion 510 is formed on the ejector pin 51, and a second inclined surface 511 is formed on the abutting portion 510. The second inclined surface 511 and the first inclined surface 540 can at least partially abut against each other.

[0045] In addition, in this embodiment, the engaging member 53a is a metal sheet and has a certain elastic deformation ability. When the engaging member 53a moves downward, the engaging member 53a can deform backward to disengage from the engaging hole 72, and when moving downward to the next row of engaging holes 72, it can recover its deformation due to its own elastic ability and thus engage with the engaging hole 72.

[0046] Optionally, a pair of symmetrical material claws 530 are formed on the engaging member 53a. A engaging portion 530a is formed on the material claws 530. At least part of the two engaging portions 530a can engage with two rows of engaging holes 72 on the material tape 7. In this embodiment, a third inclined surface 530b is formed on the engaging portion 530a. The bottom wall 720 of the engaging hole 72 can abut against the third inclined surface 530b, so that when the material claws 530 move downward, the engaging member 53a can move along the third inclined surface 530b to deform outward, thereby reducing the wear of the engaging member 53a and extending the service life of the equipment.

[0047] In addition, the linkage member 53 further 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 is formed with a nut 550 and is 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, so that when the linkage member 53 moves downward, the first elastic member 56 can store energy to complete the subsequent reset action, which is convenient for automatic feeding. In this embodiment, in order to ensure the stable movement of the linkage member 53, two first reset bolts 55 are symmetrically arranged on the wedge block 54, and a first elastic member 56 is sleeved on each of the two first reset bolts 55.

[0048] Specifically, reference can be made to Figure 3 , a receiving groove 505 is further formed on the base 50. The receiving groove 505 communicates with the above-mentioned opening groove 503 and is used for passing through the opening groove 503. At least part of the other end of the first elastic member 56 is arranged in the receiving groove 505 and abuts against the lower wall 505a of the receiving groove 505.

[0049] Optionally, the driving mechanism 52 further includes a limiting member 57. The limiting member 57 is fixedly connected to the wedge block 54 and the limiting member 57 can abut against the base 50 to prevent the driving mechanism 52 from moving out when resetting upward, thereby improving the safety of the device.

[0050] The riveting gun body 2 further includes a second elastic member 59. The output shaft 30 of the driving member 3 is fixedly connected to the ejector pin 51, and a second return bolt 58 is fixed on the output shaft 30. One end of the second elastic member 59 abuts against the second return bolt 58, and the other end abuts against the base 50. In the present invention, the second elastic member 59 is provided 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 synchronously pushed forward due to the compression of the second elastic member 59 and abuts against the workpiece to be riveted. When the output shaft 30 further moves forward, the second elastic member 59 is further compressed, preventing the base 50 from continuing to move. While improving the accuracy of the crimping, the device can be adapted to workpieces to be riveted with various wall thicknesses.

[0051] Optionally, the gun head assembly 5 further includes a positioning nozzle 504. The positioning nozzle 504 is fixed to the front end of the base 50, and is provided with a positioning hole 504a coaxial with the through hole 501, which is used to position the rivet 70 separated from the strip 7, preventing the rivet 70 from being skewed due to gravity or other external force reasons, resulting in riveting failure.

[0052] Finally, in order to facilitate the positioning of the B workpiece 9 and prevent the B workpiece 9 from being skewed during riveting, a positioning mold 6 is provided on the C-shaped clamp 4. The B workpiece 9 has a process hole, and a positioning post matching the process hole is formed on the positioning mold 6. Before riveting, placing the B workpiece 9 so that the positioning post is clamped in the process hole can ensure the stable and accurate installation of the B workpiece 9.

[0053] It should be noted that in this embodiment, the rivet 70 is a hexagonal anti-rotation rivet, and the plate does not need to be pre-drilled, reducing costs. At the same time, only one rivet 70 needs to be crimped between one B workpiece 9 and the A workpiece 8 to prevent rotation during use and ensure the stability after fastening, thereby further reducing costs and improving work efficiency.

[0054] During use, the specific working principle of this device can be referred to Figures 6 to 8 :

[0055] The operator first snaps the B component 9 onto the C-shaped clamp 4 and aligns the process hole of the B component 9 with the positioning post on the positioning die 6. Then, press the start button on the handle 1, and the driving member 3 starts to work. The output shaft 30 moves forward along the axis of the through hole 501 and pushes the ejector pin 51 forward. At this time, the ejector pin 51 has not yet abutted against the wedge block 54. When the ejector pin 51 continues to move forward and abuts against a rivet 70 on the strip 7, pushing the rivet 70 out of the material outlet 71, at this time, the ejector pin 51 penetrates into the material outlet 71, clamping the strip 7 and restricting its vertical displacement. Then the ejector pin 51 continues to move forward, pushing the rivet 70 to be mated with the bottom die 40 to rivet the B component 9 and the A component 8. At the same time, during the process of the ejector pin 51 continuing to move forward, it will abut against and slide relative to the first inclined surface 540 of the wedge block 54, thereby pushing the wedge block 54 downward, driving the clamping member 53a downward. At this time, since the strip 7 is clamped by the ejector pin 51, the clamping member 53a deforms due to its own elasticity and disengages from a row of clamping holes 72 on the strip 7, and engages with the next row of clamping holes 72 during the downward movement. At this time, the first elastic member 56 is in a state of storing energy. Finally, when the ejector pin 51 moves backward to disengage from the material outlet 71, the wedge block 54 moves upward under the elastic action of the first elastic member 56, driving the clamping member 53a upward, and finally pushing the strip 7 clamped by the clamping member 53a upward, so that the next rivet 70 is conveyed to a position coaxial with the through hole 501, completing automatic feeding.

[0056] By setting up an automatic feeding mechanism in the present invention, and this automatic feeding mechanism shares the same power source with the ejector pin 51, the overall structure of the riveting gun is compact, easy to carry, and has a low production cost. At the same time, since a hexagonal self-piercing anti-rotation rivet is used in the present invention to replace the original two rivets, the production efficiency is greatly improved, the operation is simple, and the maintenance is convenient. In addition, the precise design of the automatic feeding mechanism ensures the stable conveyance of the rivets, reduces manual intervention, and further improves the work efficiency and product quality. Generally speaking, the present invention simplifies the operation process while significantly reducing the production cost, bringing significant economic benefits to the enterprise.

[0057] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims

1. A self-piercing riveting gun, comprising a riveting gun body (2), the riveting gun body (2) including a driving member (3), a C-shaped clamp (4) and a gun head assembly (5), the driving member (3) being arranged on the C-shaped clamp (4), characterized in that, The gun head assembly (5) includes: A base (50); A tape (7) slidably arranged on the base (50), and a plurality of rivets (70) are arranged on the tape (7); A thimble (51) slidably arranged on the base (50), and the thimble (51) sequentially fires a plurality of the rivets (70) under the action of the driving member (3); A driving mechanism (52), the driving mechanism (52) includes a linkage member (53) and a first elastic member (56), the linkage member (53) is slidably arranged on the base (50), and at least part of the linkage member (53) is clamped with the tape (7), a first inclined surface (540) is formed on the linkage member (53), the thimble (51) can abut against and slide relative to the first inclined surface (540), one end of the first elastic member (56) abuts against the linkage member (53), and the other end abuts against the base (50).

2. The self-piercing riveting gun according to claim 1, wherein A through hole (501) and a guide groove (502) are formed on the base (50), the guide groove (502) is perpendicular to the axial direction of the through hole (501), the thimble (51) is arranged in the through hole (501) and can move along the axial direction of the through hole (501), and at least part of the tape (7) is arranged in the guide groove (502) and can move along the arrangement direction of the guide groove (502).

3. The self-piercing riveting gun according to claim 1, characterized in that, The linkage member (53) includes a clamping member (53a) and a wedge block (54) fixedly connected to each other, the clamping member (53a) has elasticity and at least part of it is clamped with the tape (7), the wedge block (54) is slidably connected to the base (50), and the first inclined surface (540) is formed on the wedge block (54).

4. The self-piercing riveting gun according to claim 3, wherein, The linkage member (53) further includes a first reset bolt (55), one end of the first reset bolt (55) is fixedly connected to the wedge block (54), the other end forms a nut (550) and is 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 riveting gun according to claim 4, wherein A receiving groove (505) is formed on the base (50), and at least part of the other end of the first elastic member (56) is arranged in the receiving groove (505) and abuts against the lower wall (505a) forming the receiving groove (505).

6. The self-piercing riveting gun according to claim 3, wherein, An avoidance groove (541) is formed on the wedge block (54), the first inclined surface (540) is formed on the side wall forming the avoidance groove (541), at least part of the thimble (51) is received in the avoidance groove (541), and a contact portion (510) is formed on the thimble (51), and the contact portion (510) abuts against the first inclined surface (540).

7. The self-piercing riveting gun according to claim 3, wherein, Symmetrical material claws (530) are formed on the clamping part (53a), a clamping portion (530a) is formed on the material claw (530), and at least a part of the clamping portion (530a) is clamped with a clamping hole (72) on the material tape (7).

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

9. The self-piercing riveting gun according to claim 1, characterized in that, The riveting gun body (2) further includes a second elastic member (59). The output shaft (30) of the driving member (3) is fixedly connected to the thimble (51), and a second return bolt (58) is fixed on the output shaft (30). One end of the second elastic member (59) abuts against the second return bolt (58), and the other end abuts against the base (50).

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

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