A spin riveter

Abstract

A spin riveting machine, including rotating assembly, moving assembly, rotating assembly includes motor, rotating rod, rivet rod for riveting, motor drives rotating rod to rotate, rivet rod is installed to the end of rotating rod, moving assembly includes cylinder, piston piece, end cover, end cover is installed to both ends of cylinder to seal the inside of cylinder, end cover is provided with feeding air inlet for advancing piston piece and back stroke air inlet for pushing back piston piece, the entrance of feeding air inlet and back stroke air inlet is located in the side wall of end cover, the outlet of feeding air inlet and back stroke air inlet is communicated with the inside of cylinder, the advantages are: in the manufacturing and processing technology of the equipment of the utility model, feeding air inlet and back stroke air inlet are directly opened in end cover, if cylinder appears deviation or other errors in the process of opening hole, will not cause the defect of cylinder, the defect only appears in end cover part, reduces the processing difficulty of technical processing personnel, reduces the process requirement of the manufacture of this equipment.

Description

[0001] A riveting machine Technical Field

[0002] This utility model relates to the technical field of riveting equipment, and in particular to a riveting machine. Background Technology

[0003] The spin riveting machine is a new type of riveting equipment developed based on the cold rolling riveting method. The cold rolling riveting method is a riveting method that uses a rivet rod to apply local pressure to the rivet and continuously swings around the center until the rivet is formed. In existing spin riveting machines, the rotation of the rivet rod is usually driven by a motor through a rotating assembly, and the axial movement of the rivet rod is driven by a cylinder through a moving assembly. The rotating assembly is specifically inserted in the moving assembly. When the moving assembly moves, it also drives the rotating assembly to move. The rotating assembly rotates in the moving assembly.

[0004] Patent document CN222843098U discloses a novel pneumatic riveting machine, comprising a riveting assembly for rotary riveting and a drive assembly for driving the riveting assembly; the drive assembly is connected to the riveting assembly, the drive assembly includes a motor and a cylinder, the motor is fixedly mounted on the upper end of the cylinder, the riveting assembly is mounted on the lower end of the cylinder, the riveting assembly passes through the cylinder and is connected to the motor, the cylinder has a detachable partition, the cylinder has a feed air inlet and a return air inlet, and the cylinder body has two first air ports and two second air ports.

[0005] The drive assembly is equivalent to the aforementioned moving assembly, and the riveting assembly is equivalent to the aforementioned rotating assembly. Because it is necessary to drill holes in the cylinder to provide feed and return air inlets, the riveting machine requires drilling holes in the cylinder during manufacturing. This places high demands on both the manufacturing process and the operators. If deviations or other errors occur during the drilling process, the cylinder will be scrapped, increasing manufacturing costs and reducing material utilization. Therefore, this invention provides a riveting machine that avoids drilling holes in the outer wall of the cylinder. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a riveting machine.

[0007] To achieve the above objectives, this utility model discloses a riveting machine, including a rotating assembly and a moving assembly. The rotating assembly includes a motor, a rotating rod, and a riveting rod for riveting. The motor drives the rotating rod to rotate, and the riveting rod is installed at the end of the rotating rod. The moving assembly includes a cylinder, a piston, and an end cap. The end cap is installed at both ends of the cylinder to cover the inner side of the cylinder. The end cap has a feed air inlet for advancing the piston and a return air inlet for retracting the piston. The inlets of the feed air inlet and the return air inlet are located on the side wall of the end cap, and the outlets of the feed air inlet and the return air inlet communicate with the inner side of the cylinder.

[0008] The end cap includes an upper end cap and a lower end cap. The upper end cap is connected to the upper side of the cylinder, and the lower end cap is connected to the lower side of the cylinder. The feed air inlet is located on the upper end cap, and the return air inlet is located on the return air inlet.

[0009] The cylinder includes a first cylinder body and a second cylinder body. The first cylinder body is connected to the upper side of the second cylinder body. The end cover also includes a middle end cover. The middle end cover is connected between the lower port of the first cylinder body and the upper port of the second cylinder body. The upper end cover is connected to the upper port of the first cylinder body. The lower end cover is connected to the lower port of the second cylinder body. The middle end cover has the feed air inlet and the return air inlet.

[0010] The end cap further includes a connecting bar, the cylinder is cylindrical, the end cap is cubic, and the connecting bar is sequentially connected between the upper end cap and the lower end cap, or sequentially connected between the upper end cap, the middle end cap, and the lower end cap.

[0011] The system includes a support assembly. The piston is axially movably mounted inside the cylinder, and the motor is mounted on the upper side of the cylinder. The piston has a rotating hole along its axial direction, and a rotating rod passes through the rotating hole. The support assembly includes a central bearing, a second locking member, and a third locking member. The second and third locking members are both sleeved on the rotating rod. The second locking member is fixedly connected to the side wall of the rotating hole. The rotating rod has a central shoulder. The central bearing is installed between the rotating hole and the rotating rod. The second and third locking members are located on both sides of the central bearing along its axial direction to lock the axial position of the central bearing. The rotating hole has a stepped hole with an enlarged radius. The central bearing is installed in the stepped hole and is located above the central shoulder and the second locking member.

[0012] The end cap further includes a connecting cap, which is connected to the top surface of the upper end cap. The outer side wall of the connecting cap has a vent hole, which is connected to the rotation hole.

[0013] The support assembly further includes an upper bearing and a first locking member. The rotating rod is provided with an upper shoulder. The upper bearing is installed between the rotating hole and the rotating rod. The upper shoulder and the first locking member are located on the axial sides of the upper bearing to lock the axial position of the upper bearing, so that the rotating rod and the piston move axially synchronously.

[0014] The intermediate bearing includes a first intermediate bearing and a second intermediate bearing. The first intermediate bearing is located above the second intermediate bearing. The first intermediate bearing is a slanted bearing, and the second intermediate bearing is a ball bearing. The first intermediate bearing and the second intermediate bearing are installed in the stepped hole and located above the intermediate shaft shoulder and the second locking member.

[0015] The system also includes a riveting head, and the support assembly includes a first lower bearing. The bottom surface of the riveting head has an installation groove, the rivet rod is rotatably connected to the inner side of the installation groove, the top surface of the riveting head has a fitting groove, the end of the rotating rod is fixedly installed in the fitting groove, and the first lower bearing is installed between the rivet rod and the installation groove.

[0016] The support assembly further includes a fourth locking member and a fifth locking member, both of which are sleeved on the rivet rod. The first lower bearing is located between the fourth and fifth locking members to lock the axial position of the first lower bearing.

[0017] Compared to existing technologies, the advantages of this utility model are as follows: Unlike existing technologies that place the feed and return air inlets on the cylinder, this utility model places the feed and return air inlets on the end cap, avoiding the need to install them on the cylinder itself. In the manufacturing process of this device, the feed and return air inlets can be directly opened on the end cap, eliminating the need to open them on the cylinder. Opening holes in the cylinder forces the processing personnel to drill holes in the cylinder. If deviations or other errors occur during the drilling process, the cylinder will be scrapped. However, by drilling holes on the end cap, any deviations or other errors during drilling will not result in defects in the cylinder; the defects will only appear on the end cap. This design reduces the manufacturing process requirements of this device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of a riveting machine;

[0019] Figure 2 A three-dimensional view of a riveting machine;

[0020] Figure 3This is a schematic diagram showing a partial cross-section of some components of a riveting machine;

[0021] Figure 4 for Figure 3 Enlarged view of region A in the middle;

[0022] Figure 5 This is a schematic diagram of a half-section of a moving component of a riveting machine.

[0023] Figure 6 This is a schematic diagram of the rotating component and the support component of a riveting machine in a half-section state;

[0024] Figure 7 for Figure 6 Enlarged view of region B in the middle;

[0025] Figure 8 for Figure 6 A magnified view of region C in the middle.

[0026] Markings: 11. Motor; 12. Rotating rod; 13. Rivet rod; 14. Cylinder; 15. First cylinder body; 16. Second cylinder body; 17. Piston hole; 18. Piston component; 19. Upper piston component; 20. Lower piston component; 21. Rotating hole; 22. Upper bearing; 23. First locking component; 24. Upper shaft shoulder; 25. Middle bearing; 26. First middle bearing; 27. Second middle bearing; 28. Second locking component; 29. ​​Third locking component; 30. Middle shaft shoulder; 31. Riveting head; 32. First lower bearing; 33. Installation 34. Groove; 35. Fourth locking element; 36. Cylindrical part; 37. Fifth locking element; 48. Protrusion; 39. Second lower bearing; 40. Locking ring; 41. Third lower bearing; 42. Spacer; 43. First nozzle; 44. Second nozzle; 45. Upper rotating hole; 46. Lower rotating hole; 47. Stepped hole; 48. Fitting groove; 49. End cap; 50. Upper end cap; 51. Middle end cap; 52. Lower end cap; 53. Feed air inlet; 54. Return air inlet; 55. Connecting bar; 56. Vent hole; 57. Connecting cover. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will be combined with Figure 1-8 The state shown is described in terms of orientation and structure, that is, in... Figure 1 The directional terms "front", "back", "up" and "down" are defined in this utility model.

[0028] The following will combine Figure 1-8 The accompanying drawings provide a further detailed description of this utility model.

[0029] To address the instability of existing riveting machines where the rotating component responsible for driving the rivet rod rotates within the moving component, exhibiting poor coaxiality and prone to wobbling, this invention provides a riveting machine. The machine includes a support assembly, a rotating component for rotary riveting, and a moving component for driving the rotating component axially. The rotating component comprises a motor 11, a rotating rod 12, and a rivet rod 13 for riveting. The motor 11 drives the rotating rod 12 to rotate, and the rivet rod 13 is mounted at the end of the rotating rod 12. The moving component includes a cylinder 14 and a piston 18. The motor 11 is mounted on the upper side of the cylinder 14, and the piston 18 is vertically movably mounted inside the cylinder 14 (vertical, i.e., the axial direction of this invention). The piston 18 has a through-hole along its axial direction. A rotating hole 21 is formed, through which a rotating rod 12 passes. A piston 18 reciprocates within a cylinder 14 to drive the rotating assembly to move axially, thereby causing the rivet rod 13 to rotate and be fed axially for riveting. The support assembly includes an upper bearing 22 and a first locking member 23. The rotating rod 12 has an upper shoulder 24, and the first locking member 23 is sleeved on the rotating rod 12. The inner ring of the upper bearing 22 is fixedly connected to the rotating rod 12, and the outer ring of the upper bearing 22 is fixedly connected to the side wall of the rotating hole 21. The upper bearing 22 is located between the upper shoulder 24 and the first locking member 23. The upper bearing 22 and the upper shoulder 24 limit the upper bearing 22, restricting it between the first locking member 23 and the upper shoulder 24. The upper bearing 22 supports the rotation of the rotating rod 12, improving the coaxiality of the rotating rod 12 during rotation and enhancing the stability of the rivet rod 13 during riveting.

[0030] Specifically, the first locking element 23 is an R-type radial locking nut, the upper bearing 22 is a ball bearing, and the upper bearing 22 is provided in two sets. The two sets of upper bearings 22 are arranged axially and are both limited between the upper shoulder 24 of the rotating rod 12 and the first locking element 23.

[0031] like Figure 5 The lower bottom surface of the upper piston 19 is provided with a first nozzle 41, which is connected to the rotating hole 21 of the lower piston 20. The lower bottom surface of the lower piston 20 is provided with a second nozzle 42, which faces the rivet 13. The rotating hole 21 passes through the first nozzle 41 and the second nozzle 42. The rotating hole 21 includes an upper rotating hole 44 and a lower rotating hole 45. The upper rotating hole 44 passes through the first nozzle 41, and the lower rotating hole 45 passes through the second nozzle 42. The upper rotating hole 44 and the lower rotating hole 45 are coaxially connected. The upper bearing 22 is located in the lower rotating hole 45 and is located close to the upper rotating hole 44. The middle bearing 25 is located in the lower rotating hole 45 and is located close to the lower end of the lower rotating hole 45.

[0032] The moving assembly also includes end caps 48, which are installed at both ends of the cylinder 14 to cover the inner side of the cylinder 14. The end caps 48 have feed inlets 52 for pushing the piston 18 and return inlets 53 for pushing the piston 18 back. The inlets of the feed inlets 52 and the return inlets 53 are located on the side wall of the end caps 48, and the outlets of the feed inlets 52 and the return inlets 53 are connected to the inner side of the cylinder 14.

[0033] Compared to the existing technology that places the feed inlet 52 and return inlet 53 on the cylinder 14, this invention places the feed inlet 52 and return inlet 53 on the end cover 48, avoiding the need to place the feed inlet 52 and return inlet 53 on the cylinder 14. Instead, the feed inlet 52 is placed on the end cover 48. In the manufacturing process of this invention, the feed inlet 52 and return inlet 53 can be directly opened on the end cover 48, eliminating the need to open the feed inlet 52 and return inlet 53 on the cylinder 14. Opening holes in the cylinder 14 requires the processing process and personnel to drill holes in the cylinder. If the cylinder deviates or makes other mistakes during the drilling process, the cylinder will be scrapped. However, if the drilling is done on the end cover, any deviations or other mistakes during the drilling process will not cause defects in the cylinder; the defects will only appear on the end cover. Through the above arrangement, the manufacturing process requirements of this equipment are reduced.

[0034] The end cover 48 includes an upper end cover 49 and a lower end cover 51. The upper end cover 49 is connected to the upper side of the cylinder 14, and the lower end cover 51 is connected to the lower side of the cylinder 14. The feed inlet 52 is opened in the upper end cover 49, and the return inlet 53 is opened in the return inlet 53. The feed inlet 52 and the return inlet 53 are opened in the upper end cover 49 and the lower end cover 51 respectively, so that the air holes of the cylinder 14 can be reasonably set. At the same time, the upper end cover 49 and the lower end cover 51 are located at both ends of the cylinder 14, which is beneficial to the position design of the feed inlet 52 and the return inlet 53.

[0035] The cylinder 14 is a dual-cylinder configuration, namely, the cylinder 14 has a first cylinder 15 and a second cylinder 16. The piston component 18 includes an upper piston component 19 and a lower piston component 20. The upper piston component 19 is located in the first cylinder 15, and the lower piston component 20 is located in the second cylinder 16. The spacer 40 between the first cylinder 15 and the second cylinder 16 has a piston hole 17. The first nozzle 41 of the upper piston component 19 passes through the piston hole 17 and connects with the second nozzle 42 of the lower piston component 20, so that the rotation hole 21 of the upper piston component 19 and the rotation hole 21 of the lower piston component 20 are connected. The upper piston component 19 and the lower piston component 20 are integrally movable, and the upper piston component 19 reciprocates in the piston hole 17. The rotation hole 21 of the upper piston component 19 and the rotation hole 21 of the lower piston component 20 are connected. The first locking component 23 and the upper bearing 22 are located in the rotation hole 21 of the lower piston component 20.

[0036] The end cap 48 also includes a middle end cap 50, which is connected between the lower port of the first cylinder block 15 and the upper port of the second cylinder block 16. The middle end cap 50 serves as a partition between the first cylinder block 15 and the second cylinder block 16. Specifically, the middle end cap 50 is connected to the lower port of the first cylinder block 15 and the upper port of the second cylinder block 16. The upper end cap 49 is connected to the upper port of the first cylinder block 15, and the lower end cap 51 is connected to the lower port of the second cylinder block 16. The middle end cap 50 has an opening on its side. There is a feed inlet 52 and a return inlet 53. The feed inlet 52 of the middle end cover 50 is connected to the second cylinder 16, and the return inlet 53 of the middle end cover 50 is connected to the first cylinder 15. The feed inlet 52 and the return inlet 53 are opened in the middle end cover 50, which makes it convenient to set the feed inlet 52 and the return inlet 53 between the first cylinder 15 and the second cylinder 16, so that the lower piston 20 and the upper piston 19 can be pushed to move, thereby increasing the power of the moving component.

[0037] The feed air inlet 52 and the return air inlet 53 of this utility model are both located on the same side of this utility model, such as... Figure 1 As shown, both the feed inlet 52 and the return inlet 53 are located on the left side;

[0038] like Figure 5 The figure shows gas path a, which is the intake path of the feed inlet 52 of the upper end cover 49; gas path b, which is the intake path of the return inlet 53 of the middle end cover 50; gas path c, which is the intake path of the feed inlet 52 of the middle end cover 50; and gas path d, which is the intake path of the return inlet 53 of the lower end cover 51.

[0039] Figure 5 The gas path shown in the figure is b, which belongs to the return air inlet 53 of the middle end cover 50, and the gas path shown in the figure is c, which belongs to the feed air inlet 52 of the middle end cover 50. Figure 5 To illustrate the directions of gas routes b and c, gas routes b and c are shown in the same channel, but in this invention, gas routes b and c belong to different channels.

[0040] The end cap 48 also includes a connecting bar 54. The cylinder 14 is cylindrical, and the end cap 48 is cuboid. The cross section of the end cap 48 is larger than that of the cylinder 14. The connecting bar 54 is connected between the upper end cap 49 and the lower end cap 51 in sequence, or between the upper end cap 49, the middle end cap 50, and the lower end cap 51 in sequence. The connecting bar 54 serves to connect and support the upper end cap 49, the middle end cap 50, and the lower end cap 51.

[0041] The end cap 48 also includes a connecting cap 56, which is connected to the top surface of the upper end cap 49. A vent hole 55 is provided on the outer side wall of the connecting cap 56. The vent hole 55 is connected to the rotation hole 21. The vent hole 55 is also provided on the upper end cap 49, so that the vent hole 55 can be opened on the upper end cap 49.

[0042] like Figure 5 The figure shows gas path e, which is the inlet and outlet route of vent 55.

[0043] The top cover 49, the middle cover 50, the bottom cover 51, and the end cover 48 are all flat cubes.

[0044] The support assembly also includes a middle bearing 25. The outer ring of the middle bearing 25 is fixedly connected to the side wall of the rotating hole 21, and the inner ring of the middle bearing 25 is fixedly connected to the rotating rod 12. The middle bearing 25 is located below the upper bearing 22 and is positioned near the lower port of the rotating hole 21.

[0045] Specifically, the intermediate bearing 25 includes a first intermediate bearing 26 and a second intermediate bearing 27. The first intermediate bearing 26 is a slant bearing, and the second intermediate bearing 27 is a ball bearing. The lower rotating hole 45 is provided with a stepped hole 46 with an enlarged radius. The first intermediate bearing 26 and the second intermediate bearing 27 are installed in the stepped hole 46 and are located on the upper side of the intermediate shaft shoulder 30 and the second locking member 28.

[0046] The support assembly also includes a second locking member 28 and a third locking member 29. The lower part of the rotating rod 12 is provided with a central shaft shoulder 30. The second central bearing 27 is installed on the upper side of the central shaft shoulder 30 and the second locking member 28. The first central bearing 26 is located on the upper side of the second central bearing 27. The third locking member 29 is locked on the upper side of the first central bearing 26. That is, the first central bearing 26 and the second central bearing 27 are located between the second locking member 28 and the third locking member 29 and are locked. The second locking member 28 is sealed at the lower port of the rotating hole 21. The outer side wall of the second locking member 28 is fixedly connected to the rotating hole 21. Specifically, the outer side wall of the second locking member 28 is interference-fitted with the rotating hole 21. The second locking member 28 is a locking nut, and the third locking member 29 is an R-type radial locking nut.

[0047] When the piston 18 drives the rotating rod 12 to move downward axially, the piston 18 drives the intermediate bearing 25 to move downward through the stepped hole 46, and the intermediate bearing 25 then drives the rotating rod 12 to move downward through the intermediate shaft shoulder 30; when the piston 18 drives the rotating rod 12 to move upward axially, the piston 18 drives the intermediate bearing 25 to move upward through the second locking member 28, and the intermediate bearing 25 abuts against the third locking member 29, so that the third locking member 29 drives the rotating rod 12 to move upward axially.

[0048] This utility model also includes a riveting head 31, and the support assembly includes a first lower bearing 32. The bottom surface of the riveting head 31 is provided with a mounting groove 33, and the rivet rod 13 is rotatably connected to the inner side of the mounting groove 33. The top surface of the riveting head 31 is provided with a fitting groove 47, and the end of the rotating rod 12 is fixedly installed with the fitting groove 47 so that the motor 11 drives the riveting head 31 to rotate through the rotating rod 12, thereby driving the rivet rod 13 to rotate. The inner ring of the first lower bearing 32 is fixedly connected to the rivet rod 13, and the outer ring of the first lower bearing 32 is fixedly connected to the side wall of the mounting groove 33.

[0049] The support assembly also includes a fourth locking member 34 and a fifth locking member 36. The root of the rivet 13 is installed on the bottom surface of the fifth locking member 36. The fourth locking member 34 is sleeved on the rivet 13 and locks the first lower bearing 32 between the fourth locking member 34 and the fifth locking member 36. The upward-facing side of the fourth locking member 34 has a protruding cylindrical part 35. The cylindrical part 35 is embedded in the inner ring of the first lower bearing 32. The inner ring of the first lower bearing 32 is fixedly connected to the rivet 13 through the cylindrical part 35.

[0050] The support assembly also includes a second lower bearing 37, which is located between the bottom surface of the mounting groove 33 and the fifth locking member 36. The fifth locking member 36 has a protrusion 43 on the side facing the second lower bearing 37 and the protrusion 43 is embedded in the inner ring of the second lower bearing 37. That is, the top surface of the fifth locking member 36 has a protrusion 43 to fix the position of the second lower bearing 37.

[0051] The second lower bearing 37 is a thrust tapered roller bearing.

[0052] The support assembly also includes a locking ring 38 and a third lower bearing 39. The third lower bearing 39 is located below the fourth locking member 34. The locking ring 38 is fixedly connected to the inner wall of the mounting groove 33 and is located below the third lower bearing 39 to lock the third lower bearing 39 between the locking ring 38 and the fourth locking member 34.

[0053] By setting the first lower bearing 32 and the third lower bearing 39, the stability of the rivet rod 13 during rotation is improved; by setting the second lower bearing 37, the axial load capacity of the rivet rod 13 is improved.

[0054] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They cannot be used to limit the protection scope of this utility model. All modifications made in accordance with the spirit of the main technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. A riveting machine, characterized in that, The device includes a rotating component and a moving component. The rotating component includes a motor (11), a rotating rod (12), and a riveting rod (13) for riveting. The motor (11) drives the rotating rod (12) to rotate. The riveting rod (13) is installed at the end of the rotating rod (12). The moving component includes a cylinder (14), a piston (18), and an end cap (48). The end cap (48) is installed at both ends of the cylinder (14) to cover the inner side of the cylinder (14). The end cap (48) has a feed inlet (52) for pushing the piston (18) and a return inlet (53) for pushing back the piston (18). The inlets of the feed inlet (52) and the return inlet (53) are located on the side wall of the end cap (48). The outlets of the feed inlet (52) and the return inlet (53) are connected to the inner side of the cylinder (14).

2. The riveting machine according to claim 1, characterized in that, The end cap (48) includes an upper end cap (49) and a lower end cap (51). The upper end cap (49) is connected to the upper side of the cylinder (14), and the lower end cap (51) is connected to the lower side of the cylinder (14). The feed inlet (52) is opened on the upper end cap (49), and the return inlet (53) is opened on the return inlet (53).

3. A riveting machine according to claim 2, characterized in that, The cylinder (14) includes a first cylinder body (15) and a second cylinder body (16). The first cylinder body (15) is connected to the upper side of the second cylinder body (16). The end cap (48) also includes a middle end cap (50). The middle end cap (50) is connected between the lower port of the first cylinder body (15) and the upper port of the second cylinder body (16). The upper end cap (49) is connected to the upper port of the first cylinder body (15). The lower end cap (51) is connected to the lower port of the second cylinder body (16). The middle end cap (50) has the feed air inlet (52) and the return air inlet (53).

4. A riveting machine according to claim 3, characterized in that, The end cap (48) also includes a connecting bar (54). The cylinder (14) is cylindrical, and the end cap (48) is cubic. The connecting bar (54) is connected in sequence between the upper end cap (49) and the lower end cap (51) or in sequence between the upper end cap (49), the middle end cap (50), and the lower end cap (51).

5. A riveting machine according to claim 3, characterized in that, The system includes a support assembly. The piston (18) is axially movably mounted inside the cylinder (14). The motor (11) is mounted on the upper side of the cylinder (14). The piston (18) has a rotating hole (21) axially. The rotating rod (12) passes through the rotating hole (21). The support assembly includes a central bearing (25), a second locking member (28), and a third locking member (29). The second locking member (28) and the third locking member (29) are both sleeved on the rotating rod (12). The second locking member (28) and the rotating hole (21) are connected. 1) The side wall is fixedly connected. The rotating rod (12) is provided with a central shoulder (30). The central bearing (25) is installed between the rotating hole (21) and the rotating rod (12). The second locking member (28) and the third locking member (29) are located on both sides of the axial direction of the central bearing (25) to lock the axial position of the central bearing (25). The rotating hole (21) is provided with a stepped hole (46) with an enlarged radius. The central bearing (25) is installed in the stepped hole (46) and is located on the upper side of the central shoulder (30) and the second locking member (28).

6. A riveting machine according to claim 5, characterized in that, The end cap (48) also includes a connecting cap (56), which is connected to the top surface of the upper end cap (49). The outer side wall of the connecting cap (56) is provided with a vent hole (55), which is connected to the rotating hole (21).

7. A riveting machine according to claim 6, characterized in that, The support assembly also includes an upper bearing (22) and a first locking member (23). The rotating rod (12) is provided with an upper shoulder (24). The upper bearing (22) is installed between the rotating hole (21) and the rotating rod (12). The upper shoulder (24) and the first locking member (23) are located on the axial sides of the upper bearing (22) respectively to lock the axial position of the upper bearing (22) so that the rotating rod (12) and the piston (18) move axially synchronously.

8. A riveting machine according to claim 7, characterized in that, The intermediate bearing (25) includes a first intermediate bearing (26) and a second intermediate bearing (27). The first intermediate bearing (26) is located above the second intermediate bearing (27). The first intermediate bearing (26) is a slant bearing, and the second intermediate bearing (27) is a ball bearing. The first intermediate bearing (26) and the second intermediate bearing (27) are installed in the stepped hole (46) and located above the intermediate shaft shoulder (30) and the second locking member (28).

9. A riveting machine according to claim 8, characterized in that, It also includes a riveting head (31), and the support assembly also includes a first lower bearing (32). The bottom surface of the riveting head (31) is provided with an installation groove (33). The rivet rod (13) is rotatably connected to the inner side of the installation groove (33). The top surface of the riveting head (31) is provided with a fitting groove (47). The end of the rotating rod (12) is fixedly installed with the fitting groove (47). The first lower bearing (32) is installed between the rivet rod (13) and the installation groove (33).

10. A riveting machine according to claim 9, characterized in that, The support assembly also includes a fourth locking member (34) and a fifth locking member (36), both of which are sleeved on the rivet (13). The first lower bearing (32) is located between the fourth locking member (34) and the fifth locking member (36) to lock the axial position of the first lower bearing (32).

Images