Riveting device for motor shell

Abstract

The invention provides a riveting device for a motor shell, solves the technical problems of high labor intensity of operators and low riveting efficiency caused by an existing manual riveting mode, and can be widely applied to the field of motor processing. The die specifically comprises an upper die body and a lower die body, the upper die body comprises a top cover, a die handle is arranged on the top face of the top cover and used for transmitting driving force needed when the upper die body moves, a pressing plate is arranged below the top cover, and a positioning groove is formed in the lower die body and used for containing a motor; a plurality of groups of riveting assemblies are arranged around the positioning groove, and the riveting assemblies are used for riveting the motor shell after being pressed by a pressing plate; each riveting assembly comprises a pressing block and a punch, an inclined pressing face is arranged on the pressing block, the pressing block is longitudinally arranged in the pressing block sliding groove in a sliding fit mode, and the top face of the pressing block is higher than the top face of the first limiting plate. The pressing block moving grooves are formed in the periphery of the positioning groove, and the positions of the multiple pressing block moving grooves are all located on the moving path of the pressing plate.

Description

Technical Field

[0001] The present invention belongs to the technical field of motor processing, and particularly relates to a riveting device for a motor housing. Background Art

[0002] At present, a motor 20 applied to a micro motor, as Figure 9 shown, the motor 20 is composed of a body, a motor cover plate 21 and a motor housing 22 connected. One end side wall of the motor housing 22 close to the motor cover plate 21 is symmetrically provided with riveting points 23 along its axis. Riveting is required at the riveting points 23 during assembly. The existing riveting method is that after manually combining the motor housing 22 and the motor cover plate 21, the motor cover plate 21 is tightened, and the side wall of the motor housing 22 is knocked into the riveting point 23 by using a pin (not shown in the figure). The manual riveting method causes high labor intensity of the operator and low riveting efficiency. Summary of the Invention

[0003] The purpose of the present invention is to solve the above technical deficiencies and provide a riveting device for a motor housing.

[0004] To this end, the present invention provides a riveting device for a motor housing, including an upper die and a lower die. The upper die includes a top cover, and a die handle is arranged on the top surface of the top cover. The die handle is used to transmit the driving force required for the movement of the upper die. A pressing plate is arranged below the top cover. A positioning groove is opened on the lower die for placing the motor; a plurality of riveting components are arranged around the positioning groove, and the riveting components rivet the motor housing after being pressed by the pressing plate.

[0005] Further, each riveting component includes a pressing block and a punch. The pressing block is provided with an inclined pressing surface. The pressing block is longitudinally slidably matched in the pressing block sliding groove, and the top surface of the pressing block is higher than the top surface of the first limiting plate; a pressing block moving groove is opened around the positioning groove, and the positions of a plurality of pressing block moving grooves are all on the movement path of the pressing plate.

[0006] Further, the punch is transversely slidably matched in the punch moving groove, and the punch moving groove is communicated with the pressing block moving groove; the punch is composed of an inclined block and a guillotine knife. The inclined block is matched with the inclined pressing surface, so that when the pressing block moves longitudinally, the punch can be pushed to move towards the motor.

[0007] Further, a spring is further arranged in the gap between the inclined block and the punch moving groove, and the spring provides an elastic force for the punch to move away from the motor.

[0008] Further, a guiding groove is further opened on the punch moving groove. The shape of the guiding groove is adapted to the guillotine knife to provide stable movement guidance for the guillotine knife; the guiding groove is communicated with the positioning groove, and the position of the communication port corresponds to the position of the riveting point of the motor.

[0009] Further, the cutter head at the end of the guillotine is provided with an inclined surface in the vertical direction, and the height of the starting end of the inclined surface is higher than the top surface height of the motor housing, so that during the riveting process, the motor housing is subjected to a stable extrusion force from the cutter head.

[0010] Further, the lower die is fixedly arranged in a stacked manner from top to bottom by a first limiting plate, a second limiting plate, a third limiting plate and a substrate, and the punch moving groove is opened on the second limiting plate.

[0011] Further, a disassembly groove is also opened on the lower die, and the disassembly groove forms an open end on the lower die; at the bottom of the positioning groove, a through hole penetrating the substrate is opened on the substrate; a support rod is fixedly spanned in the disassembly groove, and a striking rod rotatable around the support rod is arranged on the support rod, and one end of the striking rod extends below the through hole.

[0012] Further, the end of the striking rod extending below the through hole is provided with a fork head, a rotatable jacking seat is arranged between the fork heads through a pin shaft, and a guide rod adapted to the shape of the through hole is arranged on the top of the jacking seat, and the guide rod is inserted into the through hole.

[0013] The present invention provides a riveting device for a motor housing, and has the following beneficial effects:

[0014] By providing an annular pressing plate, a plurality of pressing blocks can be pressed simultaneously, so that a plurality of punches can rivet a plurality of parts simultaneously, improving the riveting efficiency; by only opening the punch moving groove on the second limiting plate, the first limiting plate and the second limiting plate can limit the punch longitudinally at the same time, and the additional guide groove limits the punch transversely, finally greatly improving the stability of the punch during movement.

[0015] By providing an inclined surface on the cutter head of the guillotine, the top edge of the motor housing can be contacted first, so that the motor housing is turned inward from the top end, and the motor housing is gradually riveted to the riveting point of the motor, and finally the formed riveting structure has higher strength. Description of the Drawings

[0016] Figure 1 is the overall structure diagram of the present invention;

[0017] Figure 2 is the structure diagram of the lower die of the present invention;

[0018] Figure 3 is the structure diagram of the lower die of the present invention after removing the first limiting plate;

[0019] Figure 4 is the sectional view of the lower die of the present invention;

[0020] Figure 5 is the cooperation structure diagram of the pressing block and the punch of the present invention;

[0021] Figure 6It is the structural diagram of the substrate of the present invention;

[0022] Figure 7 It is the structural diagram of the cooperation between the substrate of the present invention and the punching rod;

[0023] Figure 8 It is the structural diagram of the punching rod of the present invention;

[0024] Figure 9 It is the structural diagram of the motor;

[0025] Markings in the figure: 1. Upper die; 2. Lower die; 3. Die shank; 4. Top cover; 5. Support pillar; 6. Pressure plate; 7. Pre-pressing column; 8. Positioning groove; 9. Limiting groove; 10. Pressure block; 11. Punch; 12. Punch moving groove; 13. Inclined pressure surface; 14. Inclined pressure block; 15. Guide groove; 16. Guillotine; 17. Tool bit; 18. Pressure block moving groove; 19. Spring; 20. Motor; 21. Motor cover plate; 22. Motor housing; 23. Riveting point; 24. Punching rod; 25. Support rod; 26. Disassembly groove; 27. Fork head; 28. Jacking seat; 29. Guide rod; 30. Through hole; 31. Pin shaft; 32. First limiting plate; 33. Second limiting plate; 34. Third limiting plate; 35. Substrate; 36. Inclined surface. Detailed implementation manners

[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified.

[0027] As Figure 1 shown, the present invention provides a riveting device for a motor housing, including an upper die 1 and a lower die 2. The upper die 1 includes a top cover 4, and a die shank 3 is fixedly arranged at the center of the top surface of the top cover 4. The die shank 3 is used to transmit the driving force required when the upper die 1 moves. A pressure plate 6 is arranged below the top cover 4. The pressure plate 6 is an annular structure with a notch, and the pressure plate 6 is fixed to the top cover 4 through four support pillars 5.

[0028] As Figure 2 , as shown in FIG. 3, the lower die 2 is fixedly arranged in a stacked manner from top to bottom by a first limiting plate 32, a second limiting plate 33, a third limiting plate 34 and a substrate 35. A positioning groove 8 is opened at the center, and the shape of the positioning groove 8 is adapted to the shape of the motor 20. The positioning groove 8 penetrates through the first limiting plate 32, the second limiting plate 33 and the third limiting plate 34. A limiting groove 9 is also opened on the positioning groove 8, and the motor cover plate 21 is accommodated in the limiting groove 9 to prevent the motor 20 from rotating and shifting.

[0029] As Figure 3, as shown in Figure 4, there are six pressing block moving slots 18 arranged in a circumferential array around the positioning slot 8. The positions of the six pressing block moving slots 18 are all directly below the pressing plate 6. The pressing block moving slots 18 penetrate through the first limiting plate 32, the second limiting plate 33, and the third limiting plate 34. A pressing block 10 is arranged in each pressing block moving slot 18 in a matching manner. The pressing block 10 can slide up and down in the pressing block moving slot 18, and the top surface of the pressing block 10 is higher than the top surface of the first limiting plate 32. An inclined pressing surface 13 is arranged in the middle of the pressing block 10 in the vertical direction, and the inclined pressing surface 13 makes the pressing block 10 wider at the top and narrower at the bottom overall.

[0030] As Figure 4 shown, a punch moving slot 12 is also opened on the second limiting plate 33. The punch moving slot 12 is communicated with the pressing block moving slot 18. A punch 11 is arranged in the punch moving slot 12 in a matching manner. The punch 11 can slide back and forth in the punch moving slot 12. As Figure 5 shown, the punch 11 is composed of an inclined pressing block 14 and a guillotine 16. The inclined pressing block 14 is matched with the inclined pressing surface 13, so that when the pressing block 10 moves downward, it can push the punch 11 to move towards the motor 20. A spring 19 is also arranged in the gap between the inclined pressing block 14 and the punch moving slot 12. The spring 19 provides an elastic force for the punch 11 to move away from the motor 20. A guiding slot 15 is also opened on the punch moving slot 12. The shape of the guiding slot 15 is adapted to the guillotine 16, providing a stable moving guide for the guillotine 16. The guiding slot 15 is communicated with the positioning slot 8, and the position of the communication port corresponds to the riveting point 23 position of the motor 20. A slope 36 in the vertical direction is arranged at the cutter head 17 at the end of the guillotine 16. The height of the starting end of the slope 36 is higher than the top surface height of the motor housing 22, so that during the riveting process, the motor housing 22 is subjected to a stable extrusion force by the cutter head 17.

[0031] When riveting the motor housing 22, first install the die shank 3 on the pressure rod of the press, install the lower die 2 on the workbench of the press, and the pressure rod drives the upper die 1 to move towards the lower die 2; during the process of the pressing plate 6 squeezing the six pressing blocks 10 downward, the inclined pressing surface 13 pushes the inclined pressing block 14 to compress the spring 19, and the six punches 11 move towards the motor 20 at the same time; the slope 36 of the cutter head 17 first contacts the top edge of the motor housing 22, so that the motor housing 22 is turned inward from the top first, and gradually rivets the motor housing 22 on the riveting point 23 of the motor 20, so that the motor housing 22 is fixed on the motor 20. After the riveting is completed, the upper die 1 moves upward. When the upper die 1 releases the pressure on the pressing block 10, the punch 11 moves away from the motor 20 under the action of the spring 19, driving the pressing block 10 to move upward to complete the reset.

[0032] As Figures 6 - 8As shown in the figure, a disassembly groove 26 is also formed on the lower die 2. The disassembly groove 26 is fan-shaped, forming an open end on the lower die 2. The disassembly groove 26 penetrates through the first limiting plate 32, the second limiting plate 33, the third limiting plate 34 and the substrate 35. At the bottom of the positioning groove 8, a through hole 30 penetrating through the substrate 35 is formed on the substrate 35. A support rod 25 is fixedly spanned in the disassembly groove 26. A punching rod 24 rotatable around the support rod 25 is arranged on the support rod 25. One end of the punching rod 24 extends below the through hole 30, and a fork head 27 is arranged at this end. The fork head 27 is semi-circular ring-shaped. A rotatable jacking seat 28 is arranged between the fork heads 27 through a pin shaft 31. A guide rod 29 with a shape adapted to the through hole 30 is arranged on the top of the jacking seat 28. The guide rod 29 is inserted into the through hole 30.

[0033] After the riveting of the motor housing 22 is completed, taking the punching rod 24 as a crowbar and the support rod 25 as a fulcrum, pressing down the free end of the punching rod 24, the punching rod 24 rotates around the support rod 25, the fork head 27 drives the jacking seat 28 to move upward, and the guide rod 29 extends out from the top of the through hole 30, jacking the motor 20 out of the positioning groove 8.

[0034] A pre-pressing column 7 is fixedly arranged on the bottom surface of the top cover 4. The pre-pressing column 7 is telescopic, and the internal telescopic force is provided by a spring. The bottom surface of the pre-pressing column 7 is lower than the bottom surface of the pressing plate 6. During the downward movement of the upper die 1, the pre-pressing column 7 can contact the top surface of the motor 20 in advance to pre-press the motor 20 and prevent the motor 20 from floating.

[0035] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present invention.

[0036] However, the above are only specific embodiments of the present invention, and the scope of implementation of the present invention cannot be limited thereby. Therefore, the replacement of equivalent components or the equivalent changes and modifications made according to the scope of protection of the present invention patent shall still fall within the scope covered by the claims of the present invention.

Claims

1. A riveting device for a motor housing, comprising an upper die and a lower die, wherein the upper die comprises a top cover, and a die handle is provided on the top surface of the top cover, and the die handle is used to transmit the driving force required for the upper die to move, and is characterized in that: A pressure plate is arranged under the top cover, and a positioning groove is opened on the lower die for placing the motor; a plurality of riveting assemblies are arranged around the positioning groove, and the riveting assemblies are riveted to the motor housing after being pressed by the pressure plate.

2. The riveting device for a motor housing according to claim 1, characterized in that: Each riveting assembly includes a pressing block and a punch. The pressing block is provided with an inclined pressing surface. The pressing block is longitudinally slidably fitted in the pressing block sliding groove, and the top surface of the pressing block is higher than the top surface of the first limiting plate. The pressing block movable groove is opened around the positioning groove, and the positions of multiple pressing block movable grooves are all located on the moving path of the pressing plate.

3. The riveting device for a motor housing according to claim 2, characterized in that: The punch is laterally slidably fitted in the punch movable groove, and the punch movable groove is connected with the pressing block movable groove; the punch is composed of an inclined pressing block and a shearing cutter, and the inclined pressing block cooperates with the inclined pressing surface so that when the pressing block moves longitudinally, it can push the punch to move toward the direction of the motor.

4. The riveting device for a motor housing according to claim 3, characterized in that: A spring is also arranged in the gap between the oblique pressing block and the active groove of the punch, and the spring provides elastic force for the punch to move away from the motor.

5. The riveting device for a motor housing according to claim 3 or 4, characterized in that: A guide groove is also provided on the active groove of the punch, the shape of which matches the guillotine cutter, providing a stable moving guide for the guillotine cutter; the guide groove is connected to the positioning groove, and the position of the connecting port corresponds to the riveting point position of the motor.

6. The riveting device for a motor housing according to claim 3, characterized in that: The cutter head at the end of the guillotine is provided with an inclined surface in the vertical direction, and the height of the inclined starting end of the inclined surface is higher than the top surface height of the motor housing, so that during the riveting process, the motor housing is subjected to a steady extrusion force from the cutter head.

7. The riveting device for a motor housing according to claim 3, characterized in that: The lower die is fixedly arranged in a stacked manner from top to bottom by a first limiting plate, a second limiting plate, a third limiting plate and a base plate, and a punch movable groove is arranged on the second limiting plate.

8. The riveting device for a motor housing according to claim 7, characterized in that: The lower die is also provided with a disassembly groove, which forms an open end on the lower die; a through hole penetrating the base plate is provided on the base plate at the bottom of the positioning groove; a support rod is fixed across the disassembly groove, and a hitting rod that can rotate around the support rod is provided on the support rod, and one end of the hitting rod extends below the through hole.

9. The riveting device for a motor housing according to claim 8, characterized in that: The end of the driving rod extending below the through hole is provided with a fork, a rotatable lifting seat is provided between the forks through a pin shaft, a guide rod matching the shape of the through hole is provided on the top of the lifting seat, and the guide rod is inserted into the through hole.

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