Automatic spot welding device for capacitor cover plate

Abstract

The utility model relates to an automatic spot welding device for a capacitor cover plate, and belongs to the technical field of automatic assembly. The automatic spot welding device comprises a first feeding mechanism used for feeding leading-out terminals, a second feeding mechanism used for feeding electrodes, an assembling platform and a welding mechanism, and the welding mechanism comprises a welding head and a welding lifting piece driving the welding head to ascend and descend. The welding mechanism further comprises a welding moving assembly driving the welding lifting piece to move and a grinding assembly rotationally arranged on one side of the assembling platform and used for abutting against the end of the welding head. The welding device has the effect of improving the welding efficiency.

Description

Technical Field

[0001] This application relates to the field of automated assembly technology, and in particular to an automatic spot welding device for capacitor cover plates. Background Technology

[0002] The capacitor cover is an important component in electronic devices, and it generally includes a substrate, positive and negative electrodes, and lead-out terminals. The lead-out terminals are L-shaped plates, and the positive and negative electrodes are bolt-shaped, with the screw portion of the electrodes passing through the lead-out terminals.

[0003] Positive and negative electrodes and leads are fixed by welding or riveting. To improve production efficiency, the assembly of positive and negative electrodes and leads is mostly carried out using automated equipment. For automated equipment that uses welding as the connection method for positive and negative electrodes and leads, after each welding operation, the high temperature generated by welding causes the welding head to adhere to waste material generated from the melting of the leads. After prolonged welding, as the amount of waste material remaining on the welding head increases, it affects the welding effect of the electrodes and leads. Utility Model Content

[0004] To reduce the impact of waste material at the welding head end on the welding effect, this application provides an automatic spot welding device for capacitor covers.

[0005] The automatic spot welding device for capacitor covers provided in this application adopts the following technical solution:

[0006] An automatic spot welding device for capacitor cover plates includes a first feeding mechanism for feeding lead-out terminals, a second feeding mechanism for feeding electrodes, an assembly platform, and a welding mechanism. The welding mechanism includes a welding head and a welding lifting component for driving the welding head to rise and fall. The welding mechanism also includes a welding moving component for driving the welding lifting component to move and a grinding component rotatably disposed on one side of the assembly platform and for the end of the welding head to abut against.

[0007] By adopting the above technical solution, after the welding mechanism completes multiple welding operations, the welding head is moved horizontally to the grinding component by the welding moving component. The grinding component removes the adhesive waste on the welding head by grinding. Then, the welding moving component is reset. The above structural design reduces the impact of the adhesive waste on the welding effect of the product and improves the product yield.

[0008] Optionally, the welding moving assembly includes a welding frame, a moving drive component disposed on the welding frame, a moving screw connected to the output shaft of the moving drive component, and a moving slide block threadedly engaged with the moving screw and slidably mounted on the welding frame, wherein the welding lifting component is fixed to the moving slide block.

[0009] By adopting the above technical solution, the structural composition of the welding moving assembly is disclosed. The welding moving assembly realizes the horizontal movement of the welding head. The overall structure is simple and has the effects of convenient assembly, stable transmission, and high movement accuracy.

[0010] Optionally, the grinding assembly includes a grinding drive and a grinding disc disposed on the grinding drive, the grinding disc having a grinding surface that abuts against the end of the welding head.

[0011] By adopting the above technical solution, the grinding component can grind the end of the welding head, ensuring the cleanliness of the welding head end and improving the welding effect.

[0012] Optionally, the grinding assembly further includes a grinding lifting component for driving the grinding drive component to rise and fall, and a grinding buffer component. The grinding buffer component includes a grinding buffer frame sleeved on the grinding drive component and a buffer elastic component connected to the grinding buffer frame.

[0013] By adopting the above technical solution, the grinding drive component is raised and lowered through the grinding lifting component, which reduces the probability of interference between the welding head and the grinding disc when the welding head moves horizontally. The setting of the buffer elastic component can buffer the descent of the grinding component.

[0014] Optionally, the first feeding mechanism has a first conveying track for conveying the lead-out terminals to the assembly platform, and the second feeding mechanism has a second conveying track for conveying the electrodes to the assembly platform. The assembly platform is provided with a first assembly component and a second assembly component that correspond to the output ends of the first conveying track and the second conveying track, respectively.

[0015] By adopting the above technical solution, the two conveying tracks are set up to transport the lead-out terminals and electrodes to the assembly platform respectively, and then achieve preliminary positioning under the action of the first and second assembly components, thereby improving the welding efficiency of the product.

[0016] Optionally, the first assembly includes a first pusher and a push rod connected to the first pusher, the push rod corresponding to the output end of the first conveying track, and the top of the assembly table having a sliding groove for the lead-out terminal to slide.

[0017] By adopting the above technical solution, the configuration of the first assembly is disclosed, which is used to horizontally push the lead-out terminal to one end of the sliding groove to achieve positioning.

[0018] Optionally, after the welding head completes one welding operation, the welding head is reset upwards and the lead-out terminal and electrode are simultaneously bonded and lifted. The horizontal projections of the lifted electrode and the lead-out terminal located in the sliding groove overlap.

[0019] By adopting the above technical solution, since the welded product will be bonded and lifted by the welding head, the first assembly can simultaneously realize the unloading of the welded product and the loading of the lead-out terminal, resulting in high production efficiency.

[0020] Optionally, the second assembly includes a fixing plate, a first push plate, and a second push plate. The fixing plate has a drop hole that extends through both end faces and allows the electrode to pass through. The first push plate is slidably mounted on the top of the fixing plate and has a limiting plate for covering the drop hole. The second push plate has a conveying hole corresponding to the drop hole. When the first push plate slides, the limiting plate and the drop hole are staggered, so that the drop hole and the conveying hole are connected, and the electrode falls onto the second push plate.

[0021] By adopting the above technical solution, the structural composition of the second assembly is disclosed. The second assembly delivers the electrode to the top of the lead-out terminal, and the electrode passes through the lead-out terminal to achieve a preliminary connection between the two, resulting in high feeding efficiency.

[0022] Optionally, the assembly platform has a positioning through hole in the bottom wall of the sliding groove for the electrode to pass through, and the bottom of the assembly platform is provided with a positioning lifting component corresponding to the positioning through hole and used to drive the electrode to lift after welding.

[0023] By adopting the above technical solution, when the welding head does not bond and lift the product, the positioning lifting component ensures that the product can be detached from the positioning through hole, so that the next lead-out terminal to be welded can push the product out of the material.

[0024] Optionally, the assembly platform is provided with a feeding track on the side away from the first assembly component, and an auxiliary feeding channel is provided on one side of the feeding track. The auxiliary feeding channel has a limiting surface for the electrode to abut.

[0025] By adopting the above technical solution, the feeding track is used to receive the product pushed by the first assembly. The setting of the auxiliary feeding channel can limit the product on the horizontally moving welding head, so that the product is pushed horizontally and falls into the auxiliary feeding channel.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] This application uses a grinding component to grind away the adhesive waste on the welding head, and then resets it using a welding moving component. The above structural design reduces the impact of adhesive waste on the welding effect of the product and improves the product yield.

[0028] This application reduces the probability of interference between the welding head and the grinding disc when the welding head moves horizontally by setting up a grinding lifting component and a grinding buffer component. The setting of the buffer elastic component can buffer the descent of the grinding assembly.

[0029] This application, through the setting of a positioning lifting component, ensures that the product can be detached from the positioning through hole when the welding head fails to bond and lift the product, thereby realizing the unloading operation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0031] Figure 2 This is a cross-sectional schematic diagram of an embodiment of this application.

[0032] Figure 3 This is a schematic diagram of the welding mechanism in an embodiment of this application.

[0033] Figure 4 This is a schematic diagram of the structure of the first and second combined components according to an embodiment of this application.

[0034] Figure 5 This is a cross-sectional schematic diagram of the second assembly component according to an embodiment of this application.

[0035] Explanation of reference numerals in the attached drawings: 1. Workbench; 2. First feeding mechanism; 21. First conveying track; 3. Second feeding mechanism; 31. Second conveying track; 32. Limiting rod; 4. Assembly platform; 41. First assembly; 411. First pushing component; 412. Pushing rod; 42. Second assembly; 421. Fixing plate; 4211. Drop through hole; 422. First push plate; 4221. Limiting plate; 423. Second push plate; 4231. Conveying through hole; 43. Sliding groove; 431. Positioning through hole; 44. Abutting slide plate; 45. Positioning lifting component; 5. Welding machine 51. Welding head; 511. Conductive copper strip; 52. Welding lifting component; 53. Welding moving assembly; 531. Welding frame; 5311. Horizontal slide rail; 532. Moving drive component; 533. Moving screw; 534. Moving slide block; 5341. Vertical slide rail; 5342. Reset elastic component; 54. Grinding assembly; 541. Grinding drive component; 542. Grinding disc; 543. Grinding lifting component; 544. Grinding buffer component; 5441. Grinding buffer frame; 5442. Buffer elastic component; 6. Unloading track; 61. Auxiliary unloading channel; 611. Limiting surface. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0037] This application discloses an automatic spot welding device for capacitor cover plates.

[0038] Reference Figure 1 An automatic spot welding device for capacitor cover plates includes a workbench 1, a first feeding mechanism 2 for feeding lead-out terminals, a second feeding mechanism 3 for feeding electrodes, an assembly platform 4 disposed on the workbench 1, and a welding mechanism 5 for welding and fixing.

[0039] The first feeding mechanism 2 and the second feeding mechanism 3 are both fixed on the top of the workbench 1. Both feeding mechanisms are existing vibrating feeding disc structures, therefore, the specific structure and feeding principle of the two feeding mechanisms will not be described in this application. The first feeding mechanism 2 has a first conveying track 21 that transports the lead-out terminals one by one to the assembly platform 4, and the cross-section of the lead-out terminals is L-shaped during transport. The second feeding mechanism 3 has a second conveying track 31 that transports the electrodes one by one to the assembly platform 4, and the electrodes are transported to the assembly platform 4 in a vertical posture.

[0040] Reference Figure 1 and Figure 2 The welding mechanism 5 is located on the side of the assembly platform 4 away from the two feeding mechanisms. It includes a welding head 51, a welding lifting component 52 that drives the welding head 51 to rise and fall, a welding moving component 53 that drives the welding lifting component 52 to move horizontally, and a grinding component 54 that is rotatably set on one side of the assembly platform 4.

[0041] Reference Figure 2 and Figure 3 The welding head 51 is a vertical rod, with a conductive copper strip 511 connected to a power source on one side of its top. The welding lifting component 52 is a lifting cylinder, which is fixed above the assembly platform 4 by a U-shaped frame. The output shaft of the welding lifting component 52 passes vertically through the U-shaped frame. The welding moving assembly 53 includes a welding frame 531, a moving drive component 532 fixed to one side of the welding frame 531, a moving screw 533 connected to the output shaft of the moving drive component 532, and a moving slide 534 threadedly engaged with the moving screw 533. The moving drive component 532 is a rotary motor, with its output shaft and the moving screw 533 coaxially fixed. The welding frame 531 is equipped with a horizontal slide rail 5311 that slides and engages with the moving slide 534. When the moving drive component 532 is activated, it can drive the moving slide 534 to move back and forth in the horizontal direction.

[0042] The movable slide block 534 is provided with a vertical slide rail 5341 along the height direction to cooperate with the sliding of the welding head 51. The movable slide block 534 is also provided with a reset elastic element 5342. The reset elastic element 5342 is arranged along the height direction, and its two ends are fixed to the movable slide block 534 and the welding head 51 respectively, so that after the welding lifting releases the push on the welding head 51, the welding head 51 can automatically lift and reset under the action of the reset elastic element 5342.

[0043] The grinding assembly 54 is located on the side of the welding head 51 away from the assembly platform 4, and includes a grinding drive 541, a grinding disc 542, a grinding lifting component 543, and a grinding buffer 544. The grinding drive 541 is a vertically arranged rotary motor, and the output shafts of the grinding disc 542 and the grinding drive 541 are coaxially fixed. The top of the grinding disc 542 has a grinding surface for the welding head 51 to abut against. After the welding head 51 completes multiple welding operations, the welding head 51 moves horizontally to the top of the grinding disc 542 under the action of the welding moving assembly 53. The grinding drive 541 drives the grinding disc 542 to rotate, and the end of the welding head 51 abuts against the grinding surface to grind away the waste material adhering to the welding head 51.

[0044] The grinding drive 541 is a drive component that drives the grinding drive 541 to rise and fall. It can be a cylinder or a hydraulic cylinder, so that when the welding head 51 moves toward the grinding disc 542, there is a gap between the grinding surface and the welding head 51. After the welding head 51 and the grinding disc 542 are aligned, the grinding lifting component 543 is activated to lift the grinding disc 542.

[0045] The grinding buffer component 544 includes a grinding buffer frame 5441 sleeved on the grinding drive component 541 and a buffer elastic component 5442 connected to the grinding buffer frame 5441. The buffer elastic component 5442 is arranged along the height direction, and the grinding buffer frame 5441 and the worktable 1 are fixed at both ends respectively.

[0046] Reference Figure 4 and Figure 5 The assembly platform 4 is provided with a first combination component 41 and a second combination component 42, which are respectively corresponding to the first conveying track 21 and the second conveying track 31. The lead-out terminals and electrodes are initially positioned by the first combination component 41 and the second combination component.

[0047] The first assembly 41 includes a first pusher 411 and a push rod 412. The first pusher 411 is a push cylinder, and the push rod 412 is L-shaped. Its vertical plate is fixed to the output shaft of the push cylinder, and its horizontal plate is slidably mounted on the assembly platform 4. The top of the assembly platform 4 has a sliding groove 43 corresponding to the push rod 412 and for the sliding of the lead-out terminals.

[0048] The second assembly 42 includes a fixed plate 421, a first push plate 422, and a second push plate 423. The fixed plate 421 is fixedly mounted on the assembly platform 4 and has a drop through hole 4211 that extends through both end faces and allows the electrode to pass through. The first push plate 422 is slidably mounted on the top of the fixed plate 421 and is driven by a cylinder. The end of the first push plate 422 has a limiting plate 4221 for covering the drop through hole 4211. In normal operation, the first push plate 422 covers the drop through hole 4211, and the electrode is fed to the top of the limiting plate. After the first push plate 422 is pushed, the top of the drop through hole 4211 is opened, allowing the electrode to fall from the drop through hole 4211.

[0049] The second push plate 423 is slidably mounted on the bottom of the fixed plate 421 and is driven by a cylinder. The second push plate 423 has a conveying through hole 4231 corresponding to the drop through hole 4211. The top of the assembly platform 4 has an abutment slide plate 44 corresponding to the conveying through hole 4231, so that after the electrode falls from the drop through hole 4211 to the conveying through hole 4231, it is supported by the abutment slide plate 44. When the second push plate 423 is pushed by the cylinder, it drives the electrode to move synchronously. After the conveying through hole 4231 and the through hole of the lead-out terminal are aligned, the electrode automatically falls and the lead-out terminal is initially assembled. The second conveying track 31 also has a limiting rod 32 to restrict the synchronous movement of the electrode and the limiting plate 4221.

[0050] Assembly platform 4 has a feeding track 6 installed on the side away from the first assembly component 41. The opening of the feeding track 6 is adapted to the width of assembly platform 4. After welding head 51 completes welding, the lead-out terminal and electrode are fixed. The reset of welding head 51 causes the welded product to be lifted synchronously. In this embodiment, the product lifted by welding head 51 and the lead-out terminal located in sliding groove 43 have an overlapping area in the horizontal direction. This allows the lead-out terminal on the first push rod 412 to push the welded product to the feeding track 6 after the first assembly component 41 is started, thus realizing the feeding of the lead-out terminal.

[0051] When the welding head 51 needs to be ground for scrap after multiple welding operations, the assembly platform 4 is also provided with an auxiliary unloading channel 61 on one side of the unloading track 6. The auxiliary unloading channel 61 has a limiting surface 611 for the bottom of the product to be bonded to abut. Through the limiting surface 611, the product can automatically detach and fall into the auxiliary unloading channel 61.

[0052] The assembly platform 4 has a positioning through hole 431 on the bottom wall of the sliding groove 43 for the electrode to pass through. The electrode is fed to the end of the sliding groove 43 by the action of the second assembly 42. The electrode passes through the lead-out terminal and is inserted into the positioning through hole 431, so that the end face of the electrode and the lead-out terminal are in contact. The bottom of the assembly platform 4 is provided with a positioning lifting member 45 for driving the electrode to rise. When the electrode is disengaged from the positioning through hole 431, ensuring that the welding head 51 and the product are not bonded, the positioning lifting member 45 can still push the product to the unloading track 6 by the lead-out terminal.

[0053] The implementation principle of an automatic spot welding device for capacitor cover plates in this application is as follows: the lead-out terminals and electrodes are respectively transported to the assembly platform 4 under the action of the first feeding mechanism 2 and the second feeding mechanism 3, and then the lead-out terminals and electrodes are initially connected through the first assembly component 41 and the second component.

[0054] The welding lifting component 52 is activated, so that the end of the welding head 51 abuts against the lead-out terminal and the electrode. After welding is completed, the product is attached to the welding head 51 and lifted synchronously. Through the first combined component 41, the product is pushed to the unloading track 6, and at the same time, the next lead-out terminal to be welded is loaded to the end of the sliding groove 43.

[0055] When the welding head 51 completes multiple welding operations, the moving drive 532 is activated, and the grinding assembly 54 grinds the end of the welding head 51 to remove the adhesive waste from the welding head 51.

[0056] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic spot welding device for capacitor cover plates, comprising a first feeding mechanism (2) for feeding lead-out terminals, a second feeding mechanism (3) for feeding electrodes, an assembly platform (4), and a welding mechanism (5), wherein the welding mechanism (5) includes a welding head (51) and a welding lifting component (52) for driving the welding head (51) to rise and fall, characterized in that, The welding mechanism (5) further includes a welding moving assembly (53) that drives the welding lifting member (52) to move, and a grinding assembly (54) that is rotatably disposed on one side of the assembly platform (4) and is abutted by the end of the welding head (51). The grinding assembly (54) includes a grinding drive (541) and a grinding disk (542) disposed on the grinding drive (541), the grinding disk (542) having a grinding surface that abuts against the end of the welding head (51). The grinding assembly (54) further includes a grinding lifting member (543) for driving the grinding drive member (541) to rise and fall, and a grinding buffer member (544). The grinding buffer member (544) includes a grinding buffer frame (5441) sleeved on the grinding drive member (541) and a buffer elastic member (5442) connected to the grinding buffer frame (5441).

2. The automatic spot welding device for capacitor cover plates according to claim 1, characterized in that, The welding moving assembly (53) includes a welding frame (531), a moving drive (532) disposed on the welding frame (531), a moving screw (533) connected to the output shaft of the moving drive (532), and a moving slide (534) threadedly engaged with the moving screw (533) and slidably mounted on the welding frame (531). The welding lifting component (52) is fixed to the moving slide (534).

3. The automatic spot welding device for capacitor cover plates according to claim 1, characterized in that, The first feeding mechanism (2) has a first conveying track (21) for conveying the lead-out terminal to the assembly platform (4), and the second feeding mechanism (3) has a second conveying track (31) for conveying the electrode to the assembly platform (4). The assembly platform (4) is provided with a first assembly component (41) and a second assembly component (42) corresponding to the output ends of the first conveying track (21) and the second conveying track (31), respectively.

4. The automatic spot welding device for capacitor cover plates according to claim 3, characterized in that, The first assembly (41) includes a first pusher (411) and a push rod (412) connected to the first pusher (411). The push rod (412) corresponds to the output end of the first conveying track (21). The top of the assembly platform (4) has a sliding groove (43) for the lead-out terminal to slide.

5. An automatic spot welding device for capacitor cover plates according to claim 3, characterized in that, After the welding head (51) completes one welding, the welding head (51) is reset upward and the lead-out terminal and electrode are simultaneously bonded and lifted. The projection of the lifted electrode and the lead-out terminal located in the sliding groove (43) in the horizontal direction has an overlapping area.

6. The automatic spot welding device for capacitor cover plates according to claim 3, characterized in that, The second assembly (42) includes a fixing plate (421), a first push plate (422), and a second push plate (423). The fixing plate (421) has a drop hole (4211) that passes through both end faces and allows the electrode to pass through. The first push plate (422) is slidably mounted on the top of the fixing plate (421). The first push plate (422) is provided with a limiting plate (4221) for covering the drop hole (4211). The second push plate (423) has a conveying hole (4231) corresponding to the drop hole (4211). When the first push plate (422) slides, the limiting plate (4221) and the drop hole (4211) are staggered, so that the drop hole (4211) and the conveying hole (4231) are connected, and the electrode falls onto the second push plate (423).

7. The automatic spot welding device for capacitor cover plates according to claim 4, characterized in that, The assembly platform (4) has a positioning through hole (431) for the electrode to pass through on the bottom wall of the sliding groove (43), and the bottom of the assembly platform (4) is provided with a positioning lifting component (45) corresponding to the positioning through hole (431) and used to drive the electrode to lift after welding.

8. An automatic spot welding device for capacitor cover plates according to claim 5, characterized in that, The assembly platform (4) has a feeding track (6) on the side away from the first assembly component (41), and an auxiliary feeding channel (61) is provided on one side of the feeding track (6). The auxiliary feeding channel (61) has a limiting surface (611) for the product to be bonded to abut.

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