Device for stamping and riveting automobile motor parts

Abstract

The invention provides a device for stamping and riveting automobile motor parts, which comprises a control system, a machine base and a machine frame fixedly mounted on the machine base, a stamping and riveting mechanism is mounted on the machine frame, and a rivet feeding and positioning assembly is mounted at the position, corresponding to the stamping and riveting mechanism, above the machine base; the rivet feeding and positioning assembly comprises a supporting plate, a vibration feeding disc and a plurality of lifting driving motors. A first limiting hole for the punch to penetrate through is formed in the position, corresponding to the punch, of the supporting plate, and a push seat limiting convex hole corresponding to the push seat is coaxially formed in the upper surface of the supporting plate and surrounds the upper surface of the first limiting hole; a feeding rail is arranged on one side of the supporting plate in the length direction of the supporting plate, the cross section of the feeding rail is in a T shape, the feeding rail communicates with the first limiting hole, and the feeding rail is connected with a discharging rail of the vibration feeding disc through a transition hose rail. And automatic rivet feeding, positioning and punching riveting are achieved.

Description

Technical Field

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

[0002] In the manufacturing of automotive motor parts, the riveting process is widely used in the connection of key parts due to its high strength, reliability and adaptability, such as rotor shafts, magnet assemblies, stator core laminations, motor housings and end covers, heat dissipation fins and cooling water channels, electronic control module connectors, sensor brackets and mounting seats. Currently, in the manufacturing of automotive motor parts, the overall development trend is: intelligent, precise, green and environmentally friendly, multi-functional integration, networked, and new material adaptation. Chinese Patent Publication No. CN222268546U, with the publication date of December 31, 2024, discloses a spring automatic punching and riveting machine, including a machine base; a frame fixedly connected to the top of the machine base; a punching and riveting mechanism installed on the frame, the punching and riveting mechanism includes a hydraulic cylinder, the output end of the hydraulic cylinder is fixedly connected with a connecting seat, the bottom of the connecting seat is fixedly connected with a punching head, elastic connection components are installed on both sides of the connecting seat, and a placement channel for placing rivets is installed between the two elastic connection components. The present invention first places the workpieces to be riveted on the punching and riveting seat in sequence, and then drives the connecting seat to move downward by the hydraulic cylinder. While the connecting seat moves downward, first, the workpieces to be riveted are tightly fixed by the pressing rubber ring at the bottom of the placement channel, and as the connecting seat continues to move downward, the workpieces to be riveted can be firmly pressed. Then, the rivets inside the placement channel are pressed onto the workpieces by the punching head, so that the convenient riveting of the workpieces can be realized. The defects of this prior art are: insufficient intelligence and single function, resulting in low production efficiency. In view of this situation, it is urgent to improve. Summary of the Invention

[0003] Based on this, the purpose of the present invention is to provide a device for stamping and riveting processing of automotive motor parts, which realizes automatic feeding of rivets, positioning and punching and riveting. On the one hand, it improves the intelligent level of the device, and on the other hand, it improves the punching and riveting accuracy to ensure the quality of punching and riveting processing.

[0004] The present invention provides a device for stamping and riveting processing of automotive motor parts, including a control system, a machine base, and a frame fixedly installed on the machine base. A punching and riveting mechanism is installed on the frame, and a rivet feeding and positioning assembly is installed at a position corresponding to the punching and riveting mechanism above the machine base; the punching and riveting mechanism includes a punching and riveting drive motor, a pushing seat, and a punch. The punching and riveting drive motor is fixedly installed on the frame, and the power output end of the frame penetrates the frame and is connected to the pushing seat. The punch is correspondingly installed at the bottom of the pushing seat; a limiting space for the feeding strip conveyor belt to pass through is provided at a position corresponding to the punching and riveting mechanism on the upper surface of the machine base, and a punching and riveting seat is provided at the top of the limiting space; guiding columns are provided on the machine base, and connecting plates for the guiding columns to penetrate are provided on opposite sides of the pushing seat.

[0005] The rivet feeding and positioning assembly includes a support plate, a vibrating feeding tray, and multiple lifting drive motors; the lifting drive motors are correspondingly installed on opposite sides of the machine base, and the power output shafts of the lifting drive motors are connected to the bottom of the support plate.

[0006] A first limiting hole for the punch to penetrate is provided at a position corresponding to the punch on the support plate. A push seat limiting convex hole corresponding to the push seat is provided on the upper surface of the support plate and coaxial with the upper surface around the first limiting hole. The inner diameter of the first limiting hole is smaller than the inner diameter of the push seat limiting convex hole; a hollow mounting seat is provided coaxially at a position corresponding to the first limiting hole on the lower surface of the support plate. A rivet clamping jaw structure coaxial with the first limiting hole is provided on the upper surface of the hollow mounting seat; the rivet clamping jaw structure includes an annular lug and multiple elastic clamping pieces integrally formed in the middle of the annular lug and folded downward into a tapered shape with a wider upper part and a narrower lower part. Each elastic clamping piece encloses to form a tapered cavity for receiving the rivet. The inner diameter of the bottom opening of the tapered cavity is larger than the root of the rivet and smaller than the outer diameter of the rivet cap.

[0007] A feeding track with a T-shaped cross-section and communicating with the first limiting hole is provided along the length direction on one side of the support plate. The feeding track is connected to the discharging track of the vibrating feeding tray through a transition hose track.

[0008] Preferably, the hollow mounting seat is fixedly connected to the support plate. A rivet clamping jaw receiving groove is provided in the inner cavity of the hollow mounting seat. An annular sealing cover plate for sealing the bottom opening of the rivet clamping jaw receiving groove is provided at the bottom of the hollow mounting seat. Screws threadedly connected to the annular lug are provided at the bottom of the annular sealing cover plate.

[0009] Preferably, an annular threaded seat is formed at the position of the support plate corresponding to the hollow mounting seat. An internal thread is formed on the inner side wall of the annular threaded seat, and an external thread is formed on the outer side surface of the hollow mounting seat. The hollow mounting seat is threadedly connected to the annular threaded seat; an annular lug relief concave platform is formed on the upper surface of the hollow mounting seat, and the rivet jaw structure is correspondingly fitted on the hollow mounting seat through the annular lug; when the hollow mounting seat and the annular threaded seat are in an assembled state, the annular lug is in contact with the lower surface of the support plate.

[0010] Preferably, a positioning pin is formed on the annular lug relief concave platform, and a positioning jack for inserting the positioning pin is formed on the annular lug.

[0011] Preferably, multiple support cross stripes are formed on the inner side surface of each elastic clip from bottom to top.

[0012] Preferably, the rivet jaw structure is made of nickel-titanium alloy.

[0013] Preferably, an infrared induction probe is arranged in the first limiting hole, and the infrared induction probe is connected to a control system.

[0014] Preferably, a blocking structure is arranged at the position of the support plate corresponding to the discharge end of the feeding track; the blocking structure includes a first servo motor and a blocking door connected to the power output end of the first servo motor.

[0015] Preferably, a second servo motor is installed in the pushing seat. The power output end of the second servo motor is connected to a pressing push rod that coaxially penetrates through the punch. The free end of the pressing push rod is connected to a pressing block; a buffer groove for receiving the pressing block is formed at the bottom of the punch.

[0016] Preferably, a protective ring is provided at the bottom of the hollow mounting seat. The protective ring is a silicone buffer ring, and a polyurethane wear-resistant layer is coated on the outer surface of the silicone buffer ring.

[0017] The beneficial effects of the present invention are as follows: By providing a rivet feeding and positioning assembly, including a support plate, a vibrating feeding tray, and multiple lifting drive motors, and through the cooperation of the vibrating feeding tray and the feeding track, the feeding and automatic feeding actions of the rivets are realized, improving the intelligent level of the device. Then, the rivet is limited and fixed by the rivet jaw structure, and the punching and riveting mechanism is coaxially limited by the limiting convex hole of the pushing seat and the first limiting hole 33, thereby improving the punching and riveting accuracy and ensuring the quality of the punching and riveting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the first embodiment.

[0019] Figure 2 Schematic diagram of the second servo motor in the power output state in the first embodiment.

[0020] Figure 3 Partial view of the second embodiment.

[0021] Figure 4 Partial view of the second embodiment with a blocking structure and an infrared induction probe.

[0022] Figure 5 Three-dimensional view of the relative structural relationship between the hollow mounting base and the rivet jaw structure in the second embodiment.

[0023] Figure 6 Schematic diagram of the relative structural relationship between the rivet jaw structure and the rivet.

[0024] Reference numerals in the drawings are: riveting drive motor 10, guide post 11, frame 12, second servo motor 13, pressure material push rod 14, receiving pressure material block 16, buffer groove 15, connecting plate 17, feeding track 18, transition hose track 19, vibrating feeding tray 22, discharging track 20, positioning jack 21, push seat 23, punch 24, push seat limit convex hole 25, support plate 26, lifting drive motor 28, power output shaft 27, machine base 29, rivet jaw structure 30, limit space 31, riveting seat 32, first limit hole 33, hollow mounting base 34, rivet 35, screw 36, annular sealing cover plate 38, annular threaded seat 39, relief concave platform 40, positioning pin 41, infrared induction probe 42, first servo motor 43, blocking door 44, annular lug 45, elastic clip 46, support transverse stripe 47. Specific embodiments

[0025] In order to further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in conjunction with specific embodiments and the drawings.

[0026] In the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection", "connection", "fixation" and other terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0027] For the first embodiment, please refer to Figure 1 、 2, as shown in Figures 6, the present invention provides a device for stamping and riveting automotive motor parts, including a control system, a machine base 29, and a frame 12 fixedly installed on the machine base 29. A punching and riveting mechanism is installed on the frame 12, and a rivet feeding and positioning component is installed at a position corresponding to the punching and riveting mechanism above the machine base 29; the punching and riveting mechanism includes a punching and riveting drive motor 10, a pushing seat 23, and a punch 24. The punching and riveting drive motor 10 is fixedly installed on the frame 12, and the power output end of the frame 12 penetrates through the frame 12 and is connected to the pushing seat 23. The punch 24 is correspondingly installed at the bottom of the pushing seat 23; a limiting space 31 for the feeding strip conveyor belt to pass through is provided at a position corresponding to the punching and riveting mechanism on the upper surface of the machine base 29, and a punching and riveting seat 32 is provided at the top of the limiting space 31; the machine base 29 is provided with guide posts 11, and connecting plates 17 for the guide posts 11 to penetrate are provided on opposite sides of the pushing seat 23.

[0028] The rivet feeding and positioning component includes a support plate 26, a vibrating feeding tray 22, and a plurality of lifting drive motors 28; the lifting drive motors 28 are correspondingly installed on opposite sides of the machine base 29, and the power output shafts 27 of the lifting drive motors 28 are connected to the bottom of the support plate 26.

[0029] A first limiting hole 33 for the punch 24 to penetrate is provided at a position corresponding to the punch 24 on the support plate 26. A push seat limiting convex hole 25 corresponding to the push seat 23 is provided on the upper surface of the support plate 26 and coaxial with the upper surface around the first limiting hole 33. The inner diameter of the first limiting hole 33 is smaller than the inner diameter of the push seat limiting convex hole 25; a hollow mounting seat 34 is provided coaxially at a position corresponding to the first limiting hole 33 on the lower surface of the support plate 26, and a rivet clamping structure 30 coaxial with the first limiting hole 33 is provided on the upper surface of the hollow mounting seat 34; the rivet clamping structure 30 includes an annular lug 45 and a plurality of elastic clamping pieces 46 integrally formed in the middle of the annular lug 45 and folded downward to form a tapered shape with a wider upper part and a narrower lower part. Each elastic clamping piece 46 encloses to form a tapered cavity for receiving the rivet 35. The inner diameter of the bottom opening of the tapered cavity is larger than the root of the rivet and smaller than the outer diameter of the rivet head; multiple support transverse stripes 47 are formed on the inner side surface of each elastic clamping piece 46 from bottom to top, so that the rivet head can be correspondingly embedded on the support transverse stripes 47 with corresponding diameters for positioning. By providing multiple support transverse stripes 47, the same rivet clamping structure 30 can adapt to rivets of various sizes, and there is no need to often replace the rivet clamping structure 30 due to different diameters of the rivets for punching and riveting. The rivet clamping structure 30 is made of nickel-titanium alloy.

[0030] A feeding track 18 with a T-shaped cross-section and communicating with the first limiting hole 33 is provided along the length direction on one side of the support plate 26. The feeding track 18 is connected to the discharging track 20 of the vibrating feeding tray 22 through a transition hose track 19. By providing the transition hose track 19, the stability of the vibrating feeding tray 22 will not be affected when the support plate 26 moves up and down.

[0031] The hollow mounting base 34 is fixedly connected to the support plate 26. A rivet jaw receiving groove is formed in the inner cavity of the hollow mounting base 34. A ring-shaped sealing cover plate 38 for sealing the bottom opening of the rivet jaw receiving groove is provided at the bottom of the hollow mounting base 34. A screw 36 that is threadedly connected to the ring-shaped lug 45 is provided at the bottom of the ring-shaped sealing cover plate 38. If it is necessary to replace the rivet jaw structure 30, loosen the screw 36, remove the ring-shaped sealing cover plate 38, take out the old rivet jaw structure 30, then replace it with a new rivet jaw structure 30, and lock it with the screw after covering the ring-shaped sealing cover plate 38.

[0032] A blocking structure is provided at the position on the support plate 26 corresponding to the discharge end of the feeding track 18; the blocking structure includes a first servo motor 43 and a blocking door 44 connected to the power output end of the first servo motor 43. By providing the blocking structure, the feeding is carried out in cooperation with the riveting action.

[0033] A second servo motor 13 is installed in the pushing seat 23. The power output end of the second servo motor 13 is connected to a pressing push rod 14 that penetrates the punch 24 coaxially. The free end of the pressing push rod 14 is connected to a pressing block 16; a buffer groove 15 for receiving the pressing block 16 is formed at the bottom of the punch 24. By providing a cooperating structure of the second servo motor 13, the pressing push rod 14, and the pressing block 16, when it is detected that the root of the rivet has not been completely inserted into the conical cavity, the second servo motor 13 causes the pressing push rod 14 to drive the pressing block 16 to descend a predetermined height to apply pressure to the rivet to be riveted, so that the rivet can move down to a suitable position, thereby ensuring the riveting quality.

[0034] The operating principle of this embodiment is:

[0035] 1. The feeding strip conveyor belt conveys the product to be riveted to the position of the riveting seat 32; the rivets pass through the first limiting hole 33 in sequence through the feeding track 18 and fall into the conical cavity formed by enclosing the rivets 35 by the elastic clamping pieces 46;

[0036] 2. The lifting drive motor 28 causes the support plate 26 to descend, and presses the product through the hollow mounting base 34;

[0037] 3. The riveting drive motor 10 causes the pushing seat 23 to drive the punch 24 to sequentially penetrate the pushing seat limiting convex hole 25 and the first limiting hole 33 until the punch 24 pushes open the elastic clamping piece 46 and simultaneously rivets the rivet to the product and then resets;

[0038] 4. The lifting drive motor 28 causes the support plate 26 to rise and reset, and the feeding strip conveyor belt continues to convey the next product to the position of the riveting seat 32 to prepare for the next riveting action.

[0039] The present invention provides a rivet feeding and positioning assembly, including a support plate, a vibrating feeding tray, and multiple lifting drive motors, and realizes the feeding and automatic feeding of rivets through the connection and coordination between the vibrating feeding tray and the feeding track, thereby improving the intelligence level of the device, and then the rivet is limited and fixed by the rivet clamp structure, and the coaxial limitation of the punching and riveting mechanism is performed in coordination with the push seat limiting convex hole and the first limiting hole 33, thereby improving the punching and riveting accuracy and ensuring the quality of the punching and riveting process.

[0040] For the second implementation, please refer to Figures 3 - 5 As shown, based on the first embodiment, the connection mode of the hollow mounting seat 34 is modified to a threaded connection mode in this embodiment. An annular threaded seat 39 is formed at the position corresponding to the support plate 26 and the hollow mounting seat 34. The inner side wall of the annular threaded seat 39 is formed with an internal thread, and the outer side surface of the hollow mounting seat 34 is formed with an external thread. The hollow mounting seat 34 is threadedly connected with the annular threaded seat 39; an annular lug is formed on the upper surface of the hollow mounting seat 34 to give way to a recessed platform 40, and the rivet clamping claw structure 30 is correspondingly arranged on the hollow mounting seat 34 through the annular lug; when the hollow mounting seat 34 and the annular threaded seat 39 are in an assembled state, the annular lug 45 is in contact with the lower surface of the support plate 26. When the rivet clamping claw structure 30 needs to be replaced, it is only necessary to separate the hollow mounting seat 34 from the annular threaded seat 39, replace the rivet clamping claw structure 30, and then install the hollow mounting seat 34 back to the annular threaded seat 39, which is simple and quick to operate.

[0041] The annular lug recess 40 is formed with a positioning pin 41, and the annular lug 45 is provided with a positioning hole 21 for inserting the positioning pin 41. An infrared sensor probe 42 is arranged in the first limit hole 33, and the infrared sensor probe 42 is connected to the control system. By setting the infrared sensor probe 42, the situation of the rivet is sensed in time, and the corresponding information is fed back to the control system, and the control system issues a corresponding instruction.

[0042] By providing the positioning pin 41 , it is convenient to quickly position the rivet clamp structure 30 when replacing it, thereby ensuring assembly accuracy and shortening the operation time.

[0043] A protective ring is provided at the bottom of the hollow mounting seat 34, and the protective ring is set as a silicone buffer ring, and the outer surface of the silicone buffer ring is coated with a polyurethane wear-resistant layer. By providing the protective ring, the wear degree of the hollow mounting seat 34 when pressed down is reduced, thereby increasing the service life.

[0044] The above-described embodiments merely represent two implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the patent for 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 fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. A device for punching and riveting automobile motor parts, comprising a control system, a machine base (29), and a frame (12) fixedly mounted on the machine base (29), a punching and riveting mechanism being mounted on the frame (12), and a rivet feeding and positioning assembly being mounted above the machine base (29) and at a position corresponding to the punching and riveting mechanism; the punching and riveting mechanism comprising a punching and riveting drive motor (10), a push seat (23), and a punch (24), the punching and riveting drive motor (10) being fixedly mounted on the frame (12), and the frame (12 ) passes through the frame (12) and is connected to the push seat (23), and the punch (24) is correspondingly mounted at the bottom of the push seat (23); a limiting space (31) for a material supply conveyor belt to pass through is provided on the upper surface of the machine seat (29) at a position corresponding to the punching and riveting mechanism, and a punching and riveting seat (32) is provided at the top of the limiting space (31); a guide column (11) is provided on the machine seat (29), and connecting plates (17) for the guide column (11) to pass through are provided on opposite sides of the push seat (23); Features: The rivet feeding and positioning assembly comprises a support plate (26), a vibrating feeding plate (22), and a plurality of lifting drive motors (28); the lifting drive motors (28) are correspondingly mounted on opposite sides of the machine base (29), and a power output shaft (27) of the lifting drive motor (28) is connected to the bottom of the support plate (26); A first limiting hole (33) for the punch (24) to pass through is provided at a position corresponding to the support plate (26) and the punch (24); a push seat limiting convex hole (25) corresponding to the push seat (23) is provided on the upper surface of the support plate (26) and around the upper surface of the first limiting hole (33) coaxially, and the inner diameter of the first limiting hole (33) is smaller than the inner diameter of the push seat limiting convex hole (25); a hollow space is provided coaxially on the lower surface of the support plate (26) and the position corresponding to the first limiting hole (33). A mounting seat (34), wherein the upper surface of the hollow mounting seat (34) is provided with a rivet clamping structure (30) coaxial with the first limiting hole (33); the rivet clamping structure (30) comprises an annular lug (45) and a plurality of elastic clips (46) integrally formed in the middle of the annular lug (45) and folded downward to form a tapered shape with a wider top and a narrower bottom, each of the elastic clips (46) surrounding a tapered cavity for accommodating the rivet (35), the inner diameter of the bottom opening of the tapered cavity being larger than the root of the rivet and smaller than the outer diameter of the rivet cap; A feeding track (18) having a T-shaped cross section and connected to the first limiting hole (33) is provided on one side of the support plate (26) along its length direction; the feeding track (18) is connected to the discharge track (20) of the vibrating loading tray (22) via a transition hose track (19).

2. The device for stamping and riveting automobile motor parts according to claim 1, characterized in that: The hollow mounting seat (34) is fixedly connected to the support plate (26); a rivet clamp receiving groove is provided in the inner cavity of the hollow mounting seat (34); an annular sealing cover plate (38) is provided at the bottom of the hollow mounting seat (34) for sealing the bottom opening of the rivet clamp receiving groove; a screw (36) threadedly connected to the annular lug (45) is provided at the bottom of the annular sealing cover plate (38).

3. The device for stamping and riveting automobile motor parts according to claim 1, characterized in that: An annular threaded seat (39) is formed at a position corresponding to the support plate (26) and the hollow mounting seat (34); an inner side wall of the annular threaded seat (39) is formed with an internal thread; an outer side surface of the hollow mounting seat (34) is formed with an external thread; the hollow mounting seat (34) is threadedly connected to the annular threaded seat (39); an annular lug-yielding recess (40) is formed on the upper surface of the hollow mounting seat (34); the rivet clamping claw structure (30) is arranged on the hollow mounting seat (34) by corresponding engagement with the annular lug; when the hollow mounting seat (34) and the annular threaded seat (39) are in an assembled state, the annular lug (45) is in contact with the lower surface of the support plate (26).

4. The device for stamping and riveting automobile motor parts according to claim 3 is characterized in that: The annular lug recess (40) is formed with a positioning pin (41), and the annular lug (45) is provided with a positioning insertion hole (21) for the positioning pin (41) to be inserted.

5. A device for stamping and riveting automotive motor parts according to claim 2 or 3, characterized in that: The inner side surface of each elastic clip (46) is formed with a plurality of supporting transverse lines (47) from bottom to top.

6. A device for stamping and riveting automotive motor parts according to claim 2 or 3, characterized in that: The rivet clamping claw structure (30) is made of nickel-titanium alloy.

7. A device for stamping and riveting automotive motor parts according to claim 2 or 3, characterized in that: An infrared sensing probe (42) is arranged in the first limiting hole (33), and the infrared sensing probe (42) is connected to a control system.

8. A device for stamping and riveting automotive motor parts according to claim 2 or 3, characterized in that: A blocking structure is provided on the support plate (26) at a position corresponding to the discharge end of the feeding track (18); the blocking structure comprises a first servo motor (43) and a blocking door (44) connected to the power output end of the first servo motor (43).

9. A device for stamping and riveting automotive motor parts according to claim 2 or 3, characterized in that: A second servo motor (13) is installed in the push seat (23); a power output end of the second servo motor (13) is connected to a material pressing push rod (14) coaxially penetrating the punch (24); a free end of the material pressing push rod (14) is connected to a material pressing block (16); a buffer groove (15) for accommodating the material pressing block (16) is provided at the bottom of the punch (24).

10. The device for stamping and riveting automobile motor parts according to claim 3, characterized in that: A protective ring is arranged at the bottom of the hollow mounting seat (34), and the protective ring is arranged as a silicone buffer ring, and the outer surface of the silicone buffer ring is coated with a polyurethane wear-resistant layer.

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