Capacitor guide pin riveting equipment and method

Abstract

The invention relates to the technical field of capacitor guide pin riveting, and discloses a capacitor guide pin riveting device and method.The capacitor guide pin riveting device comprises a device base and an aluminum foil conveying mechanism, a plurality of guide pin bodies are arranged in a guide pin feeding mechanism, a rivet feeding mechanism is arranged on the device base, and a synchronous driving mechanism is arranged on the other side of the device base; compared with the prior art, the automatic riveting machine has the beneficial effects that a flowering head of the riveting mechanism is driven by a pressing block to be inserted into a petal head of a rivet body firstly, the petal head is stably expanded to the preset diameter in the radial direction, and the petal head is prevented from being torn; along with continuous pushing of the second electric telescopic rod, the fourth petal head compression spring retracts into the pressing block, the pressing block directly makes full contact with the opened petal head, the petal head is flattened and attached to the surface of the sleeve of the guide pin body, the riveting face is flat and tight, the problems that traditional riveting is prone to loosening and irregular in forming are solved, and the riveting strength and consistency are greatly improved.

Description

Technical Field

[0001] This invention relates to the field of capacitor pin riveting technology, specifically to a capacitor pin riveting device and method. Background Technology

[0002] Capacitor pin riveting is a core process in capacitor production. It requires precisely connecting the pins to the aluminum foil using rivets to form a stable conductive path. The quality of this riveting directly determines the capacitor's conductivity, mechanical stability, and lifespan. For example, a loose riveting connection can lead to increased contact resistance, causing overheating, short circuits, and other malfunctions; a poorly fitted rivet joint is susceptible to detachment due to vibration. Currently, most riveting equipment in the industry is a traditional design with a single riveting action, which has significant technical bottlenecks in riveting accuracy, automation, and synchronization, making it difficult to meet the development demands of capacitors for miniaturization, high precision, and mass production.

[0003] Traditional riveting equipment often uses single pressing or impact riveting, which lacks precise control, resulting in poor riveting formation and low connection strength. Traditional equipment directly squeezes the rivet head with pressure, which can easily cause the rivet head to tear or deform. The flatness of the aluminum foil and the guide pin is greatly reduced, resulting in a small contact area, poor conductivity, and easy overheating of the capacitor during use. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the above-mentioned difficulties and provide a capacitor guide pin riveting device and method.

[0005] A capacitor pin riveting device includes a device base and an aluminum foil conveying mechanism mounted on the device base. The aluminum foil conveying mechanism includes a conveying guide wheel located at the side end of the device base and an aluminum foil body conveyed by the conveying guide wheel. Riveting holes are evenly pre-set on the aluminum foil body. A pin feeding mechanism is provided on one side of the device base, which contains a plurality of pin bodies and can drive the pin bodies to feed onto the aluminum foil body. A rivet feeding mechanism is provided on the device base, which contains a plurality of rivet bodies and the rivet bodies output by the rivet feeding mechanism can simultaneously insert into the aluminum foil body and the pin bodies. A synchronous drive mechanism driven by the aluminum foil conveying mechanism is provided on the other side of the device base. The synchronous drive mechanism has a driven stop mechanism that is driven by the pin bodies to drop the rivet bodies. The synchronous drive mechanism also has a riveting mechanism that can complete the petal riveting of the rivet bodies by pressing them together.

[0006] As an improvement, the guide needle feeding mechanism includes a side plate fixed to one side of the equipment base. The end of the side plate is provided with a hopper for loading the guide needle body. The bottom of the hopper is provided with an insertion hole. An electric telescopic rod is provided on one side of the hopper. The telescopic end of the electric telescopic rod is connected to a plug rod that is inserted into the insertion hole. The plug rod driven by the electric telescopic rod can push the guide needle body in the hopper to align with the aluminum foil body. The guide needle body includes a kit that fits into the aluminum foil body. The end of the kit is provided with the guide needle body. The kit is provided with an insertion hole that is aligned with the opening of the riveting hole.

[0007] As an improvement, the rivet feeding mechanism includes a second hopper fixed to the equipment base. The guide needle body output from the first hopper is located at the bottom of the second hopper. The bottom of the second hopper is provided with a slot, and the slot is provided with a discharge hole that communicates with the second hopper. The rivet body in the second hopper is output from the discharge hole and simultaneously inserted into the riveting hole and the insertion hole.

[0008] As an improvement, the conveying guide wheel is provided with a bevel gear one, and the synchronous drive mechanism includes a rotating shaft mounted on the equipment base. One end of the rotating shaft is provided with a bevel gear two that meshes with the bevel gear one, and the other end of the rotating shaft is fixedly connected to a bidirectional lead screw. A lead screw block is threaded onto the bidirectional lead screw, and a push plate is provided on the lead screw block. The guide needle body output from the hopper one is located at the bottom of the push plate, and a side plate that can push the guide needle body is provided on one side of the push plate.

[0009] As an improvement, the synchronous drive mechanism also includes an operating chamber on the push plate. The operating chamber has a slide plate that slides along the axis of the bidirectional lead screw. The slide plate has an abutment plate and a material leakage hole located on one side of the abutment plate that allows the rivet body to pass through. The rivet feeding mechanism also includes a push rod that slides into the inner wall of the slot. The end of the push rod has a push block that slides in the slot and abuts against the abutment plate. The push rod is fitted with a spring located between the inner wall of the slot and the push block.

[0010] As an improvement, the driven stop mechanism includes a slide plate two that is slidably mounted on the push plate. The slide plate two is located on the slide plate one and is perpendicular to the moving direction of the slide plate one. The end of the slide plate two is provided with an abutment rod that is slidably inserted into a vertical block between the push plate and the wire block. The end of the abutment rod abuts against the kit, and a spring three is provided between the abutment end of the abutment rod and the vertical block.

[0011] As an improvement, the riveting mechanism includes an electric telescopic rod II fixed to the wire block. The telescopic end of the electric telescopic rod II is fixed with a head, and an upper folding rod and a lower folding rod are fixed to the upper and lower ends of the head, respectively. The end of the upper folding rod is provided with a groove. An aluminum foil conveying groove is provided on the equipment base. A riveting operation groove is provided on one side of the aluminum foil conveying groove. A rivet receiving groove is provided on one side of the riveting operation groove. The synchronous drive mechanism also includes a slide rail on the push plate. A bearing seat that slides on the slide rail and simultaneously abuts against the material bin II and the abutment plate is provided. An insert is provided on the bearing seat. A trapezoidal block is fixed to both the insert and the end of the lower folding rod. After the insert moves, it can be embedded into the groove to connect with the upper folding rod. A pressure block that moves up and down driven by the trapezoidal block is provided in both the bearing seat and the riveting operation groove. A spring II with its end abutting against the bearing seat is sleeved on the slide rail.

[0012] As an improvement, both ends of the rivet body are flush with the kit and both ends of the rivet body are provided with petal heads. The riveting mechanism also includes a flower head that slides into the pressure block. The pressure block is provided with a spring four that abuts against the flower head. When the pressure block moves toward the rivet body, the flower head can insert into the petal head and make the petal head open. When the flower head abuts against the rivet body, the flower head retracts into the pressure block and the pressure block flattens the opened petal head to realize petal riveting.

[0013] A method for riveting capacitor leads includes the following steps: S1: The aluminum foil body is intermittently conveyed to the riveting station via the aluminum foil conveying mechanism; S2: The guide needle body is pushed onto the aluminum foil body by the guide needle feeding mechanism, and the insertion hole on the kit of the guide needle body is initially aligned with the riveting hole on the aluminum foil body. S3: The rivet body located in the rivet feeding mechanism falls, causing it to be simultaneously inserted into the aligned rivet hole and insertion hole; S4: The riveting mechanism is driven to move by the synchronous drive mechanism, and the driven stop mechanism is triggered by the positioned guide pin body to ensure that the rivet body is accurately positioned. S5: The pressure blocks of the riveting mechanism move in opposite directions, and the flower head first opens the petal heads at both ends of the rivet body radially. Then the pressure block flattens the opened petal heads on the surface of the kit to complete the petal riveting.

[0014] To solve the above-mentioned technical problems, the technical solution provided by the present invention is as follows: The advantages of this invention compared to the prior art are as follows: 1. This device ensures reliable connection through a two-step precise riveting design of "spreading-flattening": the flower head of the riveting mechanism, driven by the pressure block, first inserts into the petal head of the rivet body and smoothly spreads radially to the preset diameter to avoid tearing of the petal head; as the electric telescopic rod continues to advance, the flower head compression spring retracts into the pressure block, and the pressure block directly contacts the spread petal head, flattening it and fitting it against the surface of the guide needle body kit. The riveting surface is flat and tight, solving the problems of easy loosening and irregular forming in traditional riveting, and greatly improving the riveting strength and consistency.

[0015] 2. This device achieves automatic and precise dual-material feeding: The guide needle feeding mechanism's hopper one can store the guide needle body, and the electric telescopic rod one drives the insertion rod to precisely push the guide needle along the side plate to the edge of the aluminum foil body. The insertion hole of the kit is initially aligned with the riveting hole of the aluminum foil; The rivet feeding mechanism's hopper two stacks the rivet body, and the driven material blocking mechanism is triggered by the guide needle body. The kit pushes against the abutment rod, and the compression spring three drives the slide plate two to slide, releasing the obstruction of the material leakage hole. The rivet is inserted into the riveting hole and insertion hole simultaneously through the discharge hole. No manual calibration is required throughout the process, and the misalignment rate is greatly reduced.

[0016] 3. This device significantly improves efficiency through synchronous linkage design: When the conveying guide wheel of the aluminum foil conveying mechanism rotates, bevel gear one drives bevel gear two, which drives the bidirectional lead screw and lead block to move. The abutting side plate of the push plate pushes the guide pin to move synchronously with the aluminum foil, avoiding damage to the aluminum foil due to relative displacement. At the same time, the linkage riveting mechanism is precisely positioned, and the feeding, conveying and riveting actions are seamlessly connected. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a capacitor guide pin riveting device and method according to the present invention. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the overall structure of a capacitor guide pin riveting device and method according to the present invention. Figure 2 .

[0019] Figure 3 This is a schematic diagram showing the overall structure of the capacitor guide pin riveting device and method of the present invention. Figure 1 .

[0020] Figure 4 This is a schematic diagram showing the overall structure of the capacitor guide pin riveting device and method of the present invention. Figure 2 .

[0021] Figure 5 This is a schematic diagram of the rivet feeding mechanism of a capacitor guide pin riveting device and method according to the present invention. Figure 1 .

[0022] Figure 6This is a schematic diagram of the rivet feeding mechanism of a capacitor guide pin riveting device and method according to the present invention. Figure 2 .

[0023] Figure 7 This is a partial structural schematic diagram of a capacitor guide pin riveting device and method according to the present invention.

[0024] Figure 8 This is a partial structural breakdown diagram of a capacitor guide pin riveting device and method according to the present invention.

[0025] Figure 9 This is a schematic diagram of the main structure of the capacitor guide pin riveting device and method of the present invention.

[0026] Figure 10 This is a schematic diagram of the synchronous drive mechanism of a capacitor guide pin riveting device and method according to the present invention.

[0027] Figure 11 This is a schematic diagram of the riveting mechanism of a capacitor guide pin riveting device and method according to the present invention.

[0028] Figure 12 This is a schematic diagram of the guide pin feeding mechanism of a capacitor guide pin riveting device and method according to the present invention.

[0029] As shown in the figure: 1. Equipment base; 101. Aluminum foil conveying trough; 102. Riveting operation trough; 103. Rivet receiving trough; 2. Aluminum foil conveying mechanism; 201. Conveying guide wheel; 202. Aluminum foil body; 203. Bevel gear one; 3. Guide pin feeding mechanism; 301. Side plate; 302. Material bin one; 303. Insertion hole; 304. Electric telescopic rod one; 305. Insertion rod; 4. Rivet feeding mechanism; 401. Material bin two; 402. Slot; 403. Discharge hole; 404. Push rod; 405. Push block; 406. Spring one; 5. Synchronous drive mechanism; 501. Rotating shaft; 502. Bevel gear two; 503. Bidirectional lead screw; 504. Lead block; 505 506. Push plate; 507. Slide plate 1; 508. Abutment plate; 509. Material leakage hole; 510. Abutment side plate; 511. Slide rail; 512. Spring 2; 6. Driven stop mechanism; 601. Slide plate 2; 603. Abutment rod; 604. Spring 3; 7. Riveting mechanism; 701. Electric telescopic rod 2; 702. End; 703. Upper folding rod; 704. Lower folding rod; 705. Insert groove; 706. Insert segment; 707. Trapezoidal block; 708. Pressure block; 709. Bearing seat; 710. Spring 4; 711. Flower head; 8. Guide needle body; 801. Guide needle body; 802. Kit; 803. Insertion hole; 804. Rivet body; 805. Petal head. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings.

[0031] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 9 As shown: A capacitor lead pin riveting device includes a device base 1 and an aluminum foil conveying mechanism 2 mounted on the device base 1. The aluminum foil conveying mechanism 2 includes a conveying guide wheel 201 located at the side end of the device base 1 and an aluminum foil body 202 conveyed by the conveying guide wheel 201. Riveting holes are evenly pre-set on the aluminum foil body 202. A lead pin feeding mechanism 3 is provided on one side of the device base 1. The lead pin feeding mechanism 3 contains a plurality of lead pin bodies 8 and can drive the lead pin bodies 8 to feed onto the aluminum foil body 202. Rivets are provided on the device base 1. The feeding mechanism 4 has a number of rivet bodies 804 inside, and the rivet bodies 804 output by the rivet feeding mechanism 4 can be simultaneously inserted with the aluminum foil body 202 and the guide needle body 8. On the other side of the equipment base 1, there is a synchronous drive mechanism 5 driven by the aluminum foil conveying mechanism 2. The synchronous drive mechanism 5 is equipped with a driven blocking mechanism 6 driven by the guide needle body 8 to make the rivet bodies 804 fall. The synchronous drive mechanism 5 is equipped with a riveting mechanism 7 that can make the rivet bodies 804 complete the petal riveting by pressing the rivet bodies 804.

[0032] The equipment base 1 is provided with an aluminum foil conveying trough 101, a riveting operation trough 102 is provided on one side of the aluminum foil conveying trough 101, and a rivet receiving trough 103 is provided on one side of the riveting operation trough 102.

[0033] The working principle of this invention is as follows: This equipment adopts a fully automated process logic of "intermittent conveying - synchronous feeding - precise positioning - petal riveting". The aluminum foil conveying mechanism 2 realizes the intermittent and precise feeding of the aluminum foil body 202, providing a stable working position for riveting. The guide pin feeding mechanism 3 and the rivet feeding mechanism 4 automatically feed the guide pin body 8 and the rivet body 804 respectively, realizing the precise alignment and insertion of the two with the riveting hole of the aluminum foil body 202. The synchronous drive mechanism 5 relies on the power of the conveying guide wheel 201 to drive the guide pin body 8 to push, the rivet body 804 to position and the riveting mechanism 7 to move, ensuring the coordinated action of each process. The driven material blocking mechanism 6 is triggered by the guide pin body 8 to precisely control the falling time of the rivet body 804 to avoid misalignment. Finally, through the two-step action of "opening-flattening" of the riveting mechanism 7, the riveting and fixing of the rivet petal head 805 is completed, realizing the integrated and firm connection of the guide pin body 8, the aluminum foil body 202 and the rivet body 804. The whole process has a high degree of automation and is suitable for the batch riveting needs of capacitor production.

[0034] In this invention, the equipment base 1 is horizontally fixed to the production workshop table and connected to the ground by high-strength bolts to ensure no vibration or displacement during riveting, providing a stable installation benchmark for all functional components. The aluminum foil body 202 passes through the aluminum foil conveying groove 101. The conveying guide wheel 201 is driven by a motor to rotate intermittently. Utilizing the friction between the conveying guide wheel 201 and the aluminum foil body 202, the aluminum foil body 202 is conveyed to the riveting station above the riveting operation groove 102 according to a preset spacing that matches the riveting hole spacing. When the conveying guide wheel 201 rotates, it drives the synchronous drive mechanism 5 to work synchronously and transmits power to the subsequent mechanism, realizing the synchronous linkage between the conveying of the aluminum foil body 202 and the riveting action. After each delivery, the conveying guide wheel 201 pauses, and after the rivet body 804 is installed, the delivery continues. During the delivery process, the riveting mechanism 7 completes the riveting. After riveting, the drive mechanism 5 returns to its original position to complete the reset, forming an intermittent operation process of "pause-installation-conveyance-riveting-reset".

[0035] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 9 Appendix Figure 12 As shown: The guide needle feeding mechanism 3 includes a side plate 301 fixed to one side of the equipment base 1. The end of the side plate 301 is provided with a hopper 302 for loading the guide needle body 8. The bottom of the hopper 302 is provided with an insertion hole 303. An electric telescopic rod 304 is provided on the side of the hopper 302. The telescopic end of the electric telescopic rod 304 is connected to an insertion rod 305 that is inserted into the insertion hole 303. The insertion rod 305 driven by the electric telescopic rod 304 can push the guide needle body 8 in the hopper 302 to align with the aluminum foil body 202. The guide needle body 8 includes a kit 802 that fits into the aluminum foil body 202. The end of the kit 802 is provided with the guide needle body 801. The kit 802 is provided with an insertion hole 803 that is aligned with the opening of the riveting hole.

[0036] Working principle of the guide needle feeding mechanism 3: In this invention, several guide needle bodies 8 can be neatly stacked in the hopper 302 by workers manually or by a robot, waiting for feeding; when the aluminum foil body 202 is conveyed, the electric telescopic rod 304 starts to retract, driving the insertion rod 305 to move horizontally along the insertion hole 303. The end of the insertion rod 305 pushes the lowermost guide needle body 8 in the hopper 302, causing it to slide along the side plate 301 to above the aluminum foil body 202; the guide needle body 8 kit 802 is precisely assembled. The fitting is positioned at the edge of the aluminum foil body 202. When the insertion hole 803 on the fitting 802 is initially aligned with the pre-set riveting hole on the aluminum foil body 202, the aluminum foil body 202 pauses its movement. The fitting 802 drives the driven stop mechanism 6 to move the rivet body 804 downward, after which the rivet insertion can be performed. After the feeding is completed, the electric telescopic rod 304 retracts and resets, the insertion rod 305 retracts, and the subsequent guide needle body 8 in the hopper falls to fill the position under the action of gravity, waiting for the next feeding. The guide needle feeding mechanism 3 can realize the automatic quantitative feeding of the guide needle body 8, accurately positioning the guide needle body 8 at the riveting hole of the aluminum foil body 202, ensuring that the insertion hole 803 of the guide needle body 8 is aligned with the riveting hole of the aluminum foil body 202, providing a basis for the cross-component insertion of the rivet body 804.

[0037] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 9 Appendix Figure 12 As shown: The rivet feeding mechanism 4 includes a second hopper 401 fixed to the equipment base 1. The guide needle body 8 output from the first hopper 302 is located at the bottom of the second hopper 401. The bottom of the second hopper 401 is provided with a slot 402. The slot 402 is provided with a discharge hole 403 communicating with the second hopper 401. The rivet body 804 in the second hopper 401 is output from the discharge hole 403 and simultaneously inserted into the riveting hole and the insertion hole 803. The rivet feeding mechanism 4 also includes a push rod 404 that is slidably inserted into the inner wall of the slot 402. The end of the push rod 404 is provided with a push block 405 that slides in the slot 402 and abuts against the abutment plate 507. The push rod 404 is sleeved with a spring 406 located between the inner wall of the slot 402 and the push block 405.

[0038] Working principle of rivet feeding mechanism 4: Several rivet bodies 804 with petal heads 805 at both ends are stacked in the second hopper 401. In the initial state, the push block 405 is released from the blocking state of the discharge hole 403 by the synchronous drive mechanism 5 through the abutment action of the riveting mechanism 7. At this time, the spring 1 406 is in a compressed state, and the rivet bodies 804 in the second hopper 401 can be output from the discharge hole 403. When the insertion hole 803 of the guide pin body 8 is aligned with the riveting hole of the aluminum foil body 202, the rivet bodies 804... Simultaneously, it can be inserted into both the guide pin body 8 and the aluminum foil body 202. After insertion, the aluminum foil conveying mechanism 2 is activated to convey the aluminum foil body 202. The aluminum foil conveying mechanism 2 drives the synchronous drive mechanism 5 to move in the conveying direction of the aluminum foil body 202. Spring 406 releases its elastic potential energy, pushing push rod 404 and push block 405 back to their initial positions. The subsequent rivet body 804 in the material bin 401 falls to the discharge hole 403 under the action of gravity and is placed on push block 405, ready for the next feeding. The rivet feeding mechanism 4 can realize the automatic and continuous feeding of rivet body 804, ensuring that the rivet body 804 is accurately inserted into the corresponding hole of aluminum foil body 202 and guide pin body 8, constructing the basic connection structure for riveting and providing a prerequisite for subsequent petal riveting.

[0039] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 5 Appendix Figure 6 Appendix Figure 7 Appendix Figure 8 Appendix Figure 9 Appendix Figure 10 Appendix Figure 11 Appendix Figure 12 As shown: The conveying guide wheel 201 is provided with a bevel gear 203. The synchronous drive mechanism 5 includes a rotating shaft 501 rotatably mounted on the equipment base 1. One end of the rotating shaft 501 is provided with a bevel gear 502 that meshes with the bevel gear 203. The other end of the rotating shaft 501 is fixedly connected to a bidirectional lead screw 503. A lead screw block 504 is threaded onto the bidirectional lead screw 503. A push plate 505 is provided on the lead screw block 504. The guide needle body 8 output from the hopper 302 is located at the bottom of the push plate 505. A side plate 509 that can push the guide needle body 8 is provided on one side of the push plate 505.

[0040] The synchronous drive mechanism 5 also includes an operating chamber on the push plate 505. The operating chamber is provided with a slide plate 506 that slides along the axial direction of the bidirectional lead screw 503. The slide plate 506 is provided with an abutment plate 507. The slide plate 506 is provided with a material leakage hole 508 located on one side of the abutment plate 507 and allowing the rivet body 804 to pass through.

[0041] The synchronous drive mechanism 5 also includes a slide rail 510 on the push plate 505. A bearing seat 709 is slidably mounted on the slide rail 510, which simultaneously abuts against the second hopper 401 and the abutment plate 507. A spring 511 with its end abutting against the bearing seat 709 is sleeved on the slide rail 510.

[0042] Working principle of synchronous drive mechanism 5: When the conveying guide wheel 201 of aluminum foil conveying mechanism 2 rotates, bevel gear 1 203 drives the meshing bevel gear 2 502 to rotate, driving the rotating shaft 501 and the bidirectional lead screw 503 to rotate synchronously; the rotation of the bidirectional lead screw 503 drives the lead block 504 to move along the axial direction of the bidirectional lead screw 503, thereby driving the push plate 505 to move synchronously. The abutting side plate 509 on the push plate 505 pushes the guide needle body 8 and the aluminum foil body 202 to move synchronously, avoiding damage to the aluminum foil body 202 due to poor connection between the guide needle body 8 and the aluminum foil body 202. In the feeding state, the bearing seat 709 on the riveting mechanism 7 is in contact with the second hopper 401, the second spring 511 is in a compressed state, and the material leakage hole 508 on the first slide plate 506 is aligned to provide a channel for the rivet to fall. After the insertion is completed, at the same time as the aluminum foil conveying mechanism 2 is started, the bearing seat 709 can slide along the slide rail 510 under the elastic action of the second spring 511 and drive the first slide plate 506 to move through the abutment plate 507 to open the top of the operating chamber. At this time, the bearing seat 709 is disengaged from the second hopper 401 and the bearing seat 709 is located directly above the push plate 505. Then the riveting mechanism 7 can be started to carry out the riveting work. After riveting is completed, the aluminum foil conveying mechanism 2 reverses and links with the synchronous drive mechanism 5, causing the bidirectional lead screw 503 to drive the lead block 504 and the push plate 505 to reset. When the bearing seat 709 and the material bin 2 401 are re-attached, the spring 2 511 is gradually compressed again, that is, the bearing seat 709 returns to the initial position. The abutment plate 507 is reset under the action of the push block 405, and after the reset is completed, it applies a pushing force to the push block 405 to compress the spring 1 406. This completes one synchronous action cycle.

[0043] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 10 As shown: The driven stop mechanism 6 includes a second slide plate 601 slidably mounted on the push plate 505. The second slide plate 601 is located on the first slide plate 506 and is perpendicular to the moving direction of the first slide plate 506. The end of the second slide plate 601 is provided with an abutment rod 603 that is slidably inserted into a vertical block disposed between the push plate 505 and the thread block 504. The end of the abutment rod 603 abuts against the kit 802, and a third spring 604 is provided between the abutment end of the abutment rod 603 and the vertical block.

[0044] Working principle of driven material blocking mechanism 6: In the initial state, spring three 604 pushes the abutment rod 603, so that the slide plate two 601 is in the position of blocking the material leakage hole 508, i.e., the top of the operating chamber, and the rivet body 804 cannot fall; when the guide needle body 8 is pushed onto the aluminum foil body 202, the kit 802 abuts against the end of the abutment rod 603, pushing the abutment rod 603 to move in the direction of the vertical block, compressing spring three 604; the abutment rod 603 drives the slide plate two 601 to slide synchronously, so that the slide plate two 601 is freed from blocking the material leakage hole 508 of the slide plate one 506, and the rivet body 804 can fall from the material bin two 401 through the material leakage hole 508 and the discharge hole 403, and insert into the riveting hole and insertion hole 803 of the aluminum foil body 202; After riveting is completed, the guide pin body 8 moves with the aluminum foil body 202 and disengages from the abutment rod 603. The spring 604 releases its elastic potential energy, pushing the abutment rod 603 and the sliding plate 601 to reset, thus re-blocking the material leakage hole 508. This prevents the next rivet body 804 from falling prematurely after the synchronous drive mechanism 5 has reset and before the next guide pin body 8 has finished feeding. In this invention, the driven material blocking mechanism 6 can trigger the rivet to fall through the positioning signal of the guide pin body 8, precisely controlling the release timing of the rivet body 804, avoiding premature falling or misaligned insertion of the rivet body 804, and ensuring the precise docking of "guide pin-aluminum foil-rivet".

[0045] Combined with appendix Figure 1 Appendix Figure 2 Appendix Figure 3 Appendix Figure 4 Appendix Figure 9 Appendix Figure 11 As shown: The riveting mechanism 7 includes an electric telescopic rod 701 fixed to the wire block 504. The telescopic end of the electric telescopic rod 701 is fixed to an end head 702. The upper and lower ends of the end head 702 are respectively fixed to an upper folding rod 703 and a lower folding rod 704. The end of the upper folding rod 703 is provided with a groove 705. The bearing seat 709 is provided with a segment 706. The ends of the segment 706 and the lower folding rod 704 are both fixed to trapezoidal blocks 707. After the segment 706 moves, it can be inserted into the groove 705 and thus connected to the upper folding rod 703. The bearing seat 709 and the riveting operation groove 102 are both provided with pressure blocks 708 that are driven by the trapezoidal blocks 707 to move up and down.

[0046] Both ends of the rivet body 804 are flush with the kit 802, and both ends of the rivet body 804 are provided with petal heads 805. The riveting mechanism 7 also includes a flower head 711 that is slidably inserted into the pressure block 708. The pressure block 708 is provided with a spring 710 that abuts against the flower head 711. When the pressure block 708 moves toward the rivet body 804, the flower head 711 can insert into the petal head 805 and make the petal head 805 open. When the flower head 711 abuts against the rivet body 804, the flower head 711 retracts into the pressure block 708 and the pressure block 708 flattens the opened petal head 805 to realize petal riveting. The upper pressure block 708 is provided with a spring 5 whose bottom abuts against the bearing seat 709.

[0047] Working principle of riveting mechanism 7: In the initial state, the upper and lower pressure blocks 708 are misaligned. When the rivet body 804 is precisely inserted into the hole, when the conveying guide wheel 201 of the aluminum foil conveying mechanism 2 is rotated to drive the synchronous drive mechanism 5 to move with the aluminum foil body 202, the bearing seat 709, under the action of spring 511, drives the upper pressure block 708 to gradually move directly above the push plate 505. When it moves into place, the insert 706 and the insert groove 705 are in an embedded docking state. The two pressure blocks 708 are located on the upper and lower sides of the kit 802. At this time, the bottom of the bearing seat 709 abuts against the push plate 505. The aluminum foil conveying mechanism 2 continues to move, driving the push plate 505 and the bearing seat 709 to move synchronously, that is, the relative position of the bearing seat 709 and the push plate 505 remains unchanged.

[0048] Then, the electric telescopic rod 701 starts to extend, driving the end 702 to move towards the riveting station. The upper folding rod 703 and the lower folding rod 704 advance synchronously. After the trapezoidal block 707 contacts the pressure block 708, the guide effect of the trapezoidal inclined surface pushes the bearing seat 709 and the pressure block 708 in the riveting operation groove 102 to move towards each other. The pressure block 708 drives the flower head 711 to approach the rivet body 804 synchronously. The flower head 711 first inserts into the petal heads 805 at both ends of the rivet body 804, and under the action of the opposing pressure, it radially expands the petal heads 805. As the pressure block 707... 08 continues to move, the flower head 711 abuts against the rivet body 804, and the compression spring 710 retracts into the pressure block 708. At this time, the pressure block 708 directly contacts the opened petal head 805 and flattens it against the surface of the guide needle assembly 802, completing the petal riveting. After riveting, the electric telescopic rod 701 retracts and resets, the trapezoidal block 707 disengages from the pressure block 708, the spring 710 pushes the flower head 711 back to its original position, the upper pressure block 708 returns to its initial position under the action of the spring 5, and the lower pressure block 708 returns to its initial position under the action of gravity. The riveting mechanism 7, through the two-step action of "opening-flattening", shapes the rivet petal head 805 into a flat riveting surface that fits against the guide needle body 8 assembly 802, realizing a firm integrated connection of the rivet body 804, the aluminum foil body 202, and the guide needle body 8, ensuring the riveting strength and stability.

[0049] A method for riveting capacitor leads includes the following steps: S1: The aluminum foil body 202 is intermittently conveyed to the riveting station by the aluminum foil conveying mechanism 2; The drive motor of the aluminum foil conveying mechanism 2 is started, and the motor drives the conveying guide wheel 201 to rotate intermittently according to preset parameters. The friction between the conveying guide wheel 201 and the aluminum foil body 202 drives the aluminum foil body 202 to move along the aluminum foil conveying groove 101. The conveying distance of each rotation is consistent with the spacing of the riveting holes of the aluminum foil body 202. After completion, the conveying guide wheel 201 pauses. At this time, one riveting hole on the aluminum foil body 202 is exactly aligned with the center position of the riveting operation groove 102, forming a stable riveting station. The pause time is matched with the cycle of subsequent feeding and riveting actions. After the riveting of this station is completed, the conveying guide wheel 201 starts again to convey the next station, and the cycle repeats.

[0050] During the conveying process, the first bevel gear 203 on the conveying guide wheel 201 rotates synchronously. Through the meshing transmission with the second bevel gear 502, the power is transmitted to the rotating shaft 501 of the synchronous drive mechanism 5, providing power for the subsequent linkage of the mechanism and ensuring that the conveying of the aluminum foil body 202 is coordinated and synchronized with other actions.

[0051] S2: The guide needle body 8 is pushed onto the aluminum foil body 202 by the guide needle feeding mechanism 3, and the insertion hole 803 on the kit 802 of the guide needle body 8 is initially aligned with the riveting hole on the aluminum foil body 202. After the aluminum foil body 202 pauses at the riveting station, the electric telescopic rod 304 of the guide pin feeding mechanism 3 extends at a set rate, driving the insertion rod 305 to move horizontally along the insertion hole 303. The end of the insertion rod 305 contacts the end of the guide pin body 8 at the bottom of the hopper 302 and pushes it to move. The guide pin body 8 slides along the guide surface of the side plate 301 to above the aluminum foil body 202. At this time, the kit 802 is precisely fitted onto the edge of the aluminum foil body 202, and the insertion hole 803 on the kit 802 is initially aligned with the riveting hole of the aluminum foil body 202.

[0052] After the push is completed, the electric telescopic rod 304 retracts and resets at the original rate, the insertion rod 305 returns to the initial position, and the guide needle body 8 in the hopper 302 falls to fill the gap under the action of gravity. The uppermost guide needle body 8 moves to the bottom of the hopper 302, waiting for the next push.

[0053] S3: The rivet body 804 located in the rivet feeding mechanism 4 falls down, so that it is simultaneously inserted into the aligned rivet hole and insertion hole 803; The guide pin assembly 802 contacts and pushes the end of the abutment rod 603 of the driven stop mechanism 6 to slide, compressing the spring 604. The abutment rod 603 drives the slide plate 601 to slide along the push plate 505. The sliding direction is perpendicular to the slide plate 506. When the guide pin is fully in place, the opening 602 on the slide plate 601 is precisely aligned with the material leakage hole 508 of the slide plate 506, ensuring that the rivet falling channel is unobstructed. If the guide pin is not fully in place, the opening 602 and the material leakage hole 508 remain misaligned, and the rivet cannot fall, thus achieving error prevention triggering.

[0054] After the guide needle body 8 is in place, the spring 406 contracts to store elastic potential energy. The rivet body 804 at the bottom of the hopper 401 falls vertically along the discharge hole 403, passes through the leakage hole 508 of the slide plate 506, and is simultaneously inserted into the riveting hole of the aluminum foil and the insertion hole 803 of the guide needle kit 802 to achieve the insertion of "aluminum foil-guide needle-rivet". After insertion, both ends of the rivet body 804 are flush with the end face of the kit 802.

[0055] S4: The riveting mechanism 7 is moved by the synchronous drive mechanism 5, and the driven stop mechanism 6 is triggered by the positioned guide pin body 8 to ensure that the rivet body 804 is accurately positioned. The power for conveying aluminum foil is transmitted to the bidirectional lead screw 503 via a bevel gear. The rotation of the bidirectional lead screw 503 drives the lead block 504 to move along the lead screw axis. The bearing seat 709 slides along the slide rail 510. When the bearing seat 709 moves to a position aligned with the slide plate 506, it stops. The riveting mechanism 7 is simultaneously positioned, and the insert 706 at the end of the upper folding rod 703 moves into the groove 705. Afterward, the lead block 504 drives the push plate 505 and the bearing seat 709 to move synchronously.

[0056] S5: The pressure block 708 of the riveting mechanism 7 moves in opposite directions, and the flower head 711 first radially expands the petal heads 805 at both ends of the rivet body 804. Then, the pressure block 708 flattens the expanded petal heads 805 on the surface of the kit 802 to complete the petal riveting.

[0057] The electric telescopic rod 701 of the riveting mechanism 7 is activated, extending at a set rate, driving the end 702, the upper folding rod 703, and the lower folding rod 704 to move towards the rivet body 804. After the inclined surface of the trapezoidal block 707 contacts the pressure block 708, a radial thrust is generated, driving the upper and lower pressure blocks 708 to move towards each other. The pressure blocks 708 drive the flower head 711 to approach the rivet synchronously. First, the flower head 711 is inserted into the petal heads 805 at both ends of the rivet. Under the action of the opposing pressure, the petal heads 805 are radially expanded to the preset diameter. During the expansion process, the flower head 711 and the petal heads 805 make stable contact without tearing. When the flower head 711 abuts against the end of the rivet body 804, the flower head 711 compresses the spring 710 and retracts into the pressure block 708. The pressure block 708 continues to move and makes full contact with the expanded petal head 805, pressing the petal head 805 flat and adhering it to the surface of the kit 802, ensuring that the petal head 805 and the kit 802 are tightly fitted and regularly shaped, thus completing the petal riveting.

[0058] After riveting is completed, the electric telescopic rod 701 retracts and resets, the spring 710 pushes the opening head 711 to reset, and drives the pressure block 708 back to the initial position; the synchronous drive mechanism 5 reverses the linkage, the wire block 504 and the push plate 505 reset, the spring 604 of the driven material blocking mechanism 6 pushes the abutment rod 603 and the slide plate 601 to reset; the conveying guide wheel 201 starts again and enters the cycle.

[0059] When implementing the capacitor pin riveting equipment, the equipment base 1 is first fixed to the flat table in the production workshop with high-strength bolts to ensure that the whole is stable and vibration-free. The aluminum foil body 202 with pre-set uniform riveting holes is passed through the aluminum foil conveying groove 101. At the same time, several pin bodies 8 are stacked in the first hopper 302 of the pin feeding mechanism 3, and several rivet bodies 804 with petal heads 805 are stacked in the second hopper 401 of the rivet feeding mechanism 4.

[0060] After the equipment is started, the conveying guide wheel 201 rotates intermittently under the drive of the motor, and uses friction to convey the aluminum foil body 202 to the riveting station above the riveting operation groove 102 at a preset interval. The bevel gear 203 on the conveying guide wheel 201 drives the bevel gear 502 and the rotating shaft 501 to rotate synchronously, so that the bidirectional lead screw 503 drives the lead block 504 and the push plate 505 to move synchronously. When the aluminum foil body 202 is in position and pauses, the electric telescopic rod 304 of the guide needle feeding mechanism 3 extends, driving the insertion rod 305 to push the guide needle body 8 at the bottom of the material bin 302 to the edge of the aluminum foil body 202. The kit 802 is fitted with the aluminum foil and the insertion hole 803 is initially aligned with the riveting hole. The kit 802 of the guide needle body 8 pushes against the abutment rod 603 of the driven material blocking mechanism 6, compressing the spring 604 and driving the slide plate 601 to slide, releasing the obstruction of the material leakage hole 508. The rivet body 804 in the material bin 401 falls through the material leakage hole 508 and the discharge hole 403, and is inserted into the riveting hole and the insertion hole 803 at the same time, realizing the three-layer precise insertion.

[0061] Subsequently, the conveyor guide wheel 201 is started again, and the synchronous drive mechanism 5 drives the abutting side plate 509 of the push plate 505 to push the guide needle body 8 to move synchronously with the aluminum foil body 202. Under the action of the second spring 511, the bearing seat 709 slides along the slide rail 510 to directly above the push plate 505, the insert 706 docks with the insert groove 705, and the riveting mechanism 7 is in place. When the electric telescopic rod 701 is activated, the end 702 drives the upper folding rod 703 and the lower folding rod 704 to advance. The trapezoidal block 707 drives the bearing seat 709 and the pressure block 708 in the riveting operation groove 102 to move towards each other. The flower head 711 first inserts into the petal head 805 and expands it radially. Then, the flower head 711 compresses the spring 710 and retracts into the pressure block 708. The pressure block 708 flattens the expanded petal head 805 and fits it against the surface of the kit 802, thus completing the petal riveting.

[0062] After riveting is completed, the electric telescopic rod 701 retracts and resets, and the synchronous drive mechanism 5 reverses and links to reset all components. The spring 604 of the driven material blocking mechanism 6 pushes the slide plate 601 to block the leakage hole 508 again. The conveying guide wheel 201 moves the riveted aluminum foil workpiece out and enters the next cycle of "conveying-feeding-riveting-resetting".

[0063] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A capacitor pin riveting device, comprising a device base (1) and an aluminum foil conveying mechanism (2) disposed on the device base (1), the aluminum foil conveying mechanism (2) comprising a conveying guide wheel (201) disposed at the side end of the device base (1) and an aluminum foil body (202) conveyed by the conveying guide wheel (201), wherein riveting holes are uniformly preset on the aluminum foil body (202), characterized in that: A guide needle feeding mechanism (3) is provided on one side of the equipment base (1). The guide needle feeding mechanism (3) contains several guide needle bodies (8) and can drive the guide needle bodies (8) to feed onto the aluminum foil body (202). A rivet feeding mechanism (4) is provided on the equipment base (1). The rivet feeding mechanism (4) contains several rivet bodies (804) and the rivet bodies (804) output by the rivet feeding mechanism (4) can be inserted into the aluminum foil body (202) and the guide needle bodies (8) at the same time. A synchronous drive mechanism (5) driven by the aluminum foil conveying mechanism (2) is provided on the other side of the equipment base (1). A driven material blocking mechanism (6) driven by the guide needle bodies (8) to make the rivet bodies (804) fall is provided on the synchronous drive mechanism (5). A riveting mechanism (7) is provided on the synchronous drive mechanism (5) to make the rivet bodies (804) complete the petal riveting by pressing the rivet bodies (804).

2. The capacitor guide pin riveting device according to claim 1, characterized in that: The guide needle feeding mechanism (3) includes a side plate (301) fixed to one side of the equipment base (1). The end of the side plate (301) is provided with a hopper (302) for loading the guide needle body (8). The bottom of the hopper (302) is provided with an insertion hole (303). The side end of the hopper (302) is provided with an electric telescopic rod (304). The telescopic end of the electric telescopic rod (304) is connected to a plug rod (305) that is inserted into the insertion hole (303). The plug rod (305) driven by the electric telescopic rod (304) can push the guide needle body (8) in the hopper (302) to dock with the aluminum foil body (202). The guide needle body (8) includes a kit (802) that is sleeved with the aluminum foil body (202). The end of the kit (802) is provided with a guide needle body (801). The kit (802) is provided with an insertion hole (803) that is aligned with the opening of the riveting hole.

3. The capacitor guide pin riveting device according to claim 2, characterized in that: The rivet feeding mechanism (4) includes a second hopper (401) fixed to the equipment base (1). The guide needle body (8) output from the first hopper (302) is located at the bottom of the second hopper (401). The bottom of the second hopper (401) is provided with a slot (402). The slot (402) is provided with a discharge hole (403) that communicates with the second hopper (401). The rivet body (804) in the second hopper (401) is output from the discharge hole (403) and simultaneously inserted into the riveting hole and the insertion hole (803).

4. The capacitor guide pin riveting device according to claim 3, characterized in that: The conveying guide wheel (201) is provided with a bevel gear (203). The synchronous drive mechanism (5) includes a rotating shaft (501) rotatably mounted on the equipment base (1). One end of the rotating shaft (501) is provided with a bevel gear (502) meshing with the bevel gear (203). The other end of the rotating shaft (501) is fixedly connected to a two-way screw (503). A screw block (504) is threaded onto the two-way screw (503). A push plate (505) is provided on the screw block (504). The guide needle body (8) output from the hopper (302) is located at the bottom of the push plate (505). A side plate (509) that can push the guide needle body (8) is provided on one side of the push plate (505).

5. A capacitor guide pin riveting device according to claim 4, characterized in that: The synchronous drive mechanism (5) also includes an operating chamber on the push plate (505). The operating chamber is provided with a sliding plate (506) that slides along the axial direction of the bidirectional lead screw (503). The sliding plate (506) is provided with an abutment plate (507). The sliding plate (506) is provided with a material leakage hole (508) located on one side of the abutment plate (507) and allowing the rivet body (804) to pass through. The rivet feeding mechanism (4) also includes a push rod (404) that slides into the inner wall of the slot (402). The end of the push rod (404) is provided with a push block (405) that slides in the slot (402) and abuts against the abutment plate (507). The push rod (404) is sleeved with a spring (406) located between the inner wall of the slot (402) and the push block (405).

6. The capacitor guide pin riveting device according to claim 5, characterized in that: The driven stop mechanism (6) includes a second slide plate (601) that is slidably mounted on the push plate (505). The second slide plate (601) is located on the first slide plate (506) and is perpendicular to the moving direction of the first slide plate (506). The end of the second slide plate (601) is provided with an abutment rod (603) that is slidably inserted into a vertical block between the push plate (505) and the wire block (504). The end of the abutment rod (603) abuts against the kit (802), and a spring (604) is provided between the abutment end of the abutment rod (603) and the vertical block.

7. The capacitor guide pin riveting device according to claim 5, characterized in that: The riveting mechanism (7) includes an electric telescopic rod two (701) fixed to the wire block (504). The telescopic end of the electric telescopic rod two (701) is fixed with an end head (702). The upper and lower ends of the end head (702) are respectively fixed with an upper folding rod (703) and a lower folding rod (704). The end of the upper folding rod (703) is provided with a groove (705). The equipment base (1) is provided with an aluminum foil conveying trough (101). The aluminum foil conveying trough (101) is provided with a riveting operation groove (102) on one side. The riveting operation groove (102) is provided with a rivet receiving groove (103) on one side. The synchronous drive mechanism (5) also includes a slide rail (51) provided on the push plate (505). 0), a bearing seat (709) is slidably provided on the slide rail (510) and simultaneously abuts the hopper (401) and the abutment plate (507). A segment (706) is provided on the bearing seat (709). A trapezoidal block (707) is fixedly connected to the end of the segment (706) and the lower folding rod (704). After the segment (706) moves, it can be embedded in the groove (705) and thus connected to the upper folding rod (703). A pressure block (708) driven by the trapezoidal block (707) to move up and down is provided in both the bearing seat (709) and the riveting operation groove (102). A spring (511) with its end abutting the bearing seat (709) is sleeved on the slide rail (510).

8. A capacitor pin riveting device according to claim 7, characterized in that: Both ends of the rivet body (804) are flush with the kit (802), and both ends of the rivet body (804) are provided with petal heads (805). The riveting mechanism (7) also includes a flower head (711) that is slidably inserted into the pressure block (708). The pressure block (708) is provided with a spring four (710) that abuts against the flower head (711). When the corresponding pressure block (708) moves toward the rivet body (804), the flower head (711) can insert into the petal head (805) so that the petal head (805) is opened. When the flower head (711) abuts against the rivet body (804), the flower head (711) retracts into the pressure block (708) and the pressure block (708) flattens the opened petal head (805) to realize petal riveting.

9. A method for riveting capacitor guide pins based on the riveting equipment described in claim 8, characterized in that, Includes the following steps: S1: The aluminum foil body (202) is intermittently conveyed to the riveting station by the aluminum foil conveying mechanism (2); S2: The guide needle body (8) is pushed onto the aluminum foil body (202) by the guide needle feeding mechanism (3), and the insertion hole (803) on the kit (802) of the guide needle body (8) is initially aligned with the riveting hole on the aluminum foil body (202); S3: The rivet body (804) located in the rivet feeding mechanism (4) falls down, so that it is simultaneously inserted into the aligned rivet hole and the insertion hole (803); S4: The riveting mechanism (7) is moved by the synchronous drive mechanism (5), and the driven stop mechanism (6) is triggered by the positioned guide pin body (8) to ensure that the rivet body (804) is accurately positioned; S5: The pressure block (708) of the riveting mechanism (7) moves towards each other, and the flower head (711) first opens the petal heads (805) at both ends of the rivet body (804) radially. Then the pressure block (708) flattens the opened petal heads (805) on the surface of the kit (802) to complete the petal riveting.

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