Square solid aluminum electrolytic capacitor welding special fixture
By designing a special welding fixture for square solid aluminum electrolytic capacitors, precise positioning and welding of the core package, cover plate and terminals were achieved, solving the problems of low pass rate and safety hazards in the welding process, and improving the welding accuracy and yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FOSHAN SANSHUI RIMING ELECTRONCS
- Filing Date
- 2025-08-04
- Publication Date
- 2026-07-31
AI Technical Summary
In the existing technology, the laser welding process for square solid aluminum electrolytic capacitors has a low pass rate and poses safety hazards.
A special welding fixture for square solid aluminum electrolytic capacitors was designed, including components such as a fixed base plate, core holder, cover plate holder, movable panel and wire pins. The fixture achieves precise positioning and welding of the core, cover plate and terminals through positioning grooves and welding pre-drilled holes, and uses laser welding equipment to burn through the cover plate and fuse the terminals.
It improved the accuracy and stability of welding, increased the yield of finished products, and solved safety hazards.
Smart Images
Figure CN224574873U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of capacitor welding fixture technology, specifically a special fixture for welding square solid aluminum electrolytic capacitors. Background Technology
[0002] The square solid aluminum electrolytic capacitor is a newly developed product of the company. Laser welding of the terminals on the cover plate to the positive and negative leads of the core is a crucial step in the production process. In the early stages of development, production involved hand-holding the core and then positioning it onto the cover plate for laser welding. However, this method resulted in a very low yield rate, and the hand-held operation posed safety hazards.
[0003] Therefore, we invented a special fixture for welding square solid aluminum electrolytic capacitors. Utility Model Content
[0004] The purpose of this invention is to provide a special fixture for welding square solid aluminum electrolytic capacitors, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A special welding fixture for square solid aluminum electrolytic capacitors is mainly used for welding square solid aluminum electrolytic capacitors. The square solid aluminum electrolytic capacitor is composed of a core, lead plates, a cover plate, and terminals. Lead plates are provided on both sides of the front end of the core, and terminals are provided at both ends of the bottom of the cover plate. The lead plates are fixedly connected to the terminals. It also includes a fixed base plate, and a positioning groove is provided on the top of the fixed base plate.
[0007] The positioning groove contains a core package seat and a cover plate seat, with the cover plate seat positioned at the front end of the core package seat.
[0008] The fixed base plate is rotatably connected to a movable panel, and the movable panel has welding pre-drilled holes, which correspond to the two sides of the top of the cover plate seat.
[0009] The welding pre-drilled hole is slidably connected to two sides of a pressure pin, and a pin spring is connected to the top of the pressure pin. The top of the pin spring is fixedly mounted on the movable panel.
[0010] In a preferred embodiment of this utility model, through holes are provided at the four corners of the fixed base plate, and supports are fixedly installed on both sides of the top rear end of the fixed base plate, with movable panels rotatably connected to the side walls of the supports.
[0011] In a preferred embodiment of this utility model, a positioning post is fixedly installed at the top front end of the fixed base plate, a magnet is installed in the middle of the positioning post, and a magnet is installed on the movable panel at the position corresponding to the position of the magnet.
[0012] In a preferred embodiment of this utility model, a core package placement groove is provided on the top of the core package holder, and a core package is placed inside the core package placement groove. Lead-out piece positioning grooves are provided on both sides of the front end of the top of the core package holder, and lead-out pieces are provided inside the lead-out piece positioning grooves.
[0013] In a preferred embodiment of the present invention, a fixture seat is fixedly installed on the top of the cover plate seat, and slots are provided on both sides of the fixture seat, with terminals placed on the inner wall of the slots.
[0014] In a preferred embodiment of this utility model, screws are installed at the bottom of the movable panel, and the screws are located on both sides of the wire pressing pin.
[0015] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
[0016] This fixture can effectively improve the product qualification rate and consists of a core package fixing seat, a cover plate seat, a lead wire clamping block, a movable panel and a fixed base plate.
[0017] Place the core package into the core package placement slot and the lead piece into the lead piece positioning slot. Insert the terminal of the cover plate into the slot of the fixture seat and place the end of the lead piece on top of the cover plate. Then flip the movable panel downwards. The pressure pin is pressed onto the lead piece by the weight of the movable panel. Start the external laser equipment. During the laser welding process, the cover plate will be burned through, the terminal will be exposed, and the pressure pin will be fused with the terminal to improve the welding accuracy.
[0018] The core package placement slot positions the core package, the lead-out piece positioning slot positions the lead-out piece, and the slot positions the cover plate, thereby improving the stability of the welding process and increasing the yield. Attached Figure Description
[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0020] Figure 1 This is a schematic diagram of a special fixture for welding square solid aluminum electrolytic capacitors.
[0021] Figure 2 A schematic diagram of the core housing seat and cover plate seat in a special fixture for welding square solid aluminum electrolytic capacitors;
[0022] Figure 3 A three-dimensional view of a special fixture for welding square solid aluminum electrolytic capacitors;
[0023] Figure 4A schematic diagram of the voltage wire lead structure in a special welding fixture for square solid aluminum electrolytic capacitors;
[0024] Figure 5 This is a schematic diagram of the structure of a square solid aluminum electrolytic capacitor in a special welding fixture for square solid aluminum electrolytic capacitors.
[0025] In the diagram: fixed base plate 100, positioning groove 110, through hole 120, support 130, movable panel 140, welding reserved hole 150, positioning post 200, magnet one 210, magnet two 220, core package seat 300, core package placement groove 310, lead-out piece positioning groove 320, cover plate seat 400, jig seat 410, slot 420, wire pressing pin 500, ejector spring 510, screw 520, core package 1, lead-out piece 2, cover plate 3, terminal 4. Detailed Implementation
[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0027] Please refer to Figure 1-5 This is a special welding fixture for square solid aluminum electrolytic capacitors. It is mainly used for welding square solid aluminum electrolytic capacitors. The square solid aluminum electrolytic capacitor is composed of a core cascade 1, lead plates 2, a cover plate 3, and terminals 4. Lead plates 2 are provided on both sides of the front end of the core cascade 1, and terminals 4 are provided at both ends of the bottom of the cover plate 3. The lead plates 2 and terminals 4 are fixedly connected. The core cascade 1 is set to be square, thus forming a square solid aluminum electrolytic capacitor.
[0028] It also includes a fixed base plate 100, the top of which is provided with a positioning groove 110. Specifically, the fixed base plate 100 has a positioning function for the core package seat 300 and the cover plate seat 400.
[0029] The positioning groove 110 contains a core package seat 300 and a cover plate seat 400. The cover plate seat 400 is located at the front end of the core package seat 300. Specifically, the core package seat 300 has a positioning function for the core package 1 and the lead-out piece 2, and the cover plate seat 400 has a positioning function for the cover plate 3 and the terminal 4.
[0030] The fixed base plate 100 is rotatably connected to a movable panel 140. The movable panel 140 has welding pre-drilled holes 150, which correspond to the top two sides of the cover plate seat 400. The welding pre-drilled holes 150 are slidably connected to the two sides of the welding pre-drilled holes 150. The top of the welding pre-drilled holes 150 is connected to a pin spring 510, and the top of the pin spring 510 is fixedly installed on the movable panel 140. Specifically, the core package 1 and the cover plate 3 are placed on the core package seat 300 and the cover plate seat 400, respectively. Then, by flipping the movable panel 140, the downward-moving welding pre-drilled holes 140 press the lead piece 2 onto the cover plate 3. Then, the lead piece 2 and the terminal 4 are welded from the welding pre-drilled holes 150 using an external laser welding device. During the laser welding process, the cover plate 3 will be burned through, exposing the terminal 4, and the welding pre-drilled holes 500 and the terminal 4 will be fused together, thus improving the welding accuracy.
[0031] The fixed base plate 100 has through holes 120 at its four corners. Supports 130 are fixedly installed on both sides of the top rear end of the fixed base plate 100. The side wall of the support 130 is rotatably connected to a movable panel 140. Specifically, those skilled in the art can fix the fixed base plate 100 to the workbench by using the through holes 120 and external screws. The support 130 provides support for the movable panel 140.
[0032] A positioning post 200 is fixedly installed at the top front end of the fixed base plate 100. A magnet 210 is installed in the middle of the positioning post 200. A magnet 220 is installed on the movable panel 140 corresponding to the position of the magnet 210. Specifically, after the movable panel 140 is reversed downwards, the top of its positioning post 200 contacts the bottom of the movable panel 140, and the magnets 210 and 220 are attracted to each other, thereby positioning the fixed base plate 100 and the movable panel 140 and improving the welding accuracy.
[0033] The core packing seat 300 has a core packing placement groove 310 on its top, and a core packing 1 is placed inside the core packing placement groove 310. Lead-out piece positioning grooves 320 are provided on both sides of the front end of the core packing seat 300, and lead-out pieces 2 are placed inside the lead-out piece positioning grooves 320. A fixture seat 410 is fixedly installed on the top of the cover plate seat 400. Slots 420 are provided on both sides of the fixture seat 410, and terminals 4 are placed on the inner wall of the slots 420. Specifically, the core packing placement groove 310 positions the core packing 1, the lead-out piece positioning groove 320 positions the lead-out piece 2, and the slots 420 position the cover plate 3, thereby improving the stability of the welding process and increasing the yield.
[0034] The bottom of the movable panel 140 is equipped with screws 520, which are located on both sides of the wire pressing pin 500. Specifically, the edge of the screws 520 extends to the lower sides of the wire pressing pin 500 to prevent the wire pressing pin 500 from detaching from the movable panel 140.
[0035] The working principle of this utility model is as follows: those skilled in the art can fix this device on the laser welding platform by passing screws through the through hole 120, and adjust the position of the welding reserved hole 150 so that it corresponds to the lower part of the laser output end;
[0036] Flip the movable panel 140 upwards, place the core package 1 into the core package placement slot 310, and place the lead piece into the lead piece positioning slot 320. Insert the terminal 4 of the cover plate 3 into the slot 420 of the fixture base 410, and place the end of the lead piece 2 above the cover plate 3. Then flip the movable panel 140 downwards, and the wire pressing pin 500 is pressed onto the lead piece 2 by the weight of the movable panel 140. Start the external laser equipment. During the laser welding process, the cover plate 3 will be burned through, the terminal 4 will be exposed, and the wire pressing pin 500 will be fused with the terminal 4.
[0037] After welding is completed, flip the movable panel 140 upwards to remove the assembled square solid aluminum electrolytic capacitor.
[0038] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.
Claims
1. A special welding fixture for square solid aluminum electrolytic capacitors, mainly used for welding square solid aluminum electrolytic capacitors. The square solid aluminum electrolytic capacitor is composed of a core package (1), lead plates (2), a cover plate (3), and terminals (4). Lead plates (2) are provided on both sides of the front end of the core package (1), and terminals (4) are provided at both ends of the bottom of the cover plate (3). The lead plates (2) are fixedly connected to the terminals (4). The feature is that: It also includes a fixed base plate (100), the top of which is provided with a positioning groove (110); The positioning groove (110) contains a core package seat (300) and a cover plate seat (400), and the cover plate seat (400) is located at the front end of the core package seat (300); The fixed base plate (100) is rotatably connected to a movable panel (140) on its top. The movable panel (140) is provided with welding pre-drilled holes (150), which correspond to the two sides of the top of the cover plate seat (400). The welding pre-drilled hole (150) is slidably connected to two sides of a pressure pin (500), and the top of the pressure pin (500) is connected to a pin spring (510), and the top of the pin spring (510) is fixedly installed on the movable panel (140).
2. The special welding fixture for square solid aluminum electrolytic capacitors according to claim 1, characterized in that, The fixed base plate (100) has through holes (120) at its four corners. Supports (130) are fixedly installed on both sides of the top rear end of the fixed base plate (100). A movable panel (140) is rotatably connected to the side wall of the support (130).
3. The square solid electrolytic aluminum capacitor welding fixture of claim 1, wherein, A positioning post (200) is fixedly installed at the top front end of the fixed base plate (100), a magnet (210) is installed in the middle of the positioning post (200), and a magnet (220) is installed on the movable panel (140) corresponding to the position of the magnet (210).
4. The square solid electrolytic aluminum capacitor welding fixture of claim 1, wherein, The core package holder (300) has a core package placement groove (310) on its top, and a core package (1) is placed inside the core package placement groove (310). The core package holder (300) has lead-out piece positioning grooves (320) on both sides of its top front end, and lead-out pieces (2) are arranged inside the lead-out piece positioning grooves (320).
5. The square solid electrolytic aluminum capacitor welding fixture of claim 1, wherein, A fixture seat (410) is fixedly installed on the top of the cover plate seat (400). Slots (420) are provided on both sides of the fixture seat (410), and terminals (4) are placed on the inner wall of the slots (420).
6. The square solid electrolytic aluminum capacitor welding fixture of claim 1, wherein, The bottom of the movable panel (140) is fitted with screws (520), which are located on both sides of the wire pins (500).