Capacitor cover plate, fixing clamp and welding equipment

Abstract

The utility model relates to a capacitor cover plate, stationary fixture and welding equipment, comprising a fixture seat, the top surface of the fixture seat is provided with a step concave surface for placing the capacitor cover plate, and the front end and the rear end of the step concave surface are respectively provided with a front limiting surface and a rear limiting surface; the step concave surface is also concavely provided with an avoiding groove for avoiding the two leading-out terminals, and the inner side wall of the avoiding groove forms a side leaning surface against which the two leading-out terminals abut; according to the fixing clamp on the welding equipment, the two leading-out terminals abut against the side abutting faces, it is ensured that the cover plate linearly slides front and back along the side abutting faces, the front limiting face and the rear limiting face are matched during front-back sliding, the bottom ends of the two leading-out terminals can be aligned to a welding station in sequence, and two welding points are still kept positioned during switching; the whole positioning process is fast and accurate, the welding quality and the welding efficiency of the capacitor cover plate are improved, the stability of products is guaranteed, the structure is simple, and the starting difficulty is low.

Description

Technical Field

[0001] The utility model relates to the field of capacitors, in particular to a capacitor cover plate, a fixing jig and a welding device. Background Art

[0002] At present, the capacitor structure mainly includes a housing, a capacitor core built in the inner cavity of the housing, and a cover plate encapsulated at the mouth of the housing. The cover plate is provided with lead-out terminals. During the assembly process of the capacitor, one end of the connecting wire needs to be welded to the sprayed gold surface of the capacitor core first, and then the other end of the connecting wire is welded to the bottom of the lead-out terminal. Finally, the capacitor core is placed in the inner cavity of the housing and then encapsulated through the cover plate. Currently, the process of welding the other end of the connecting wire to the lead-out terminal generally adopts manual welding, and the cover plate is simply fixed on the jig. Workers hold the welding gun and move it according to the position of the welding point for welding. This welding method results in unstable welding effects, and problems such as the welding points being welded crooked easily occur due to the shaking of the workers' hands, resulting in poor welding accuracy of the product, high rejection rate, low production efficiency, and unqualified product quality. Therefore, the applicant provides a new solution for the welding structure through the improvement and perfection of the existing technology for consumers to choose and use. Summary of the Invention

[0003] The purpose of the utility model is to provide a capacitor cover plate, a fixing jig and a welding device with simple and reasonable structure, convenient installation and stable structure.

[0004] A capacitor cover plate includes a cover plate. Two side-by-side lead-out terminals are arranged on the cover surface of the cover plate. The bottom ends of the two lead-out terminals pass through the cover plate and are led out from the bottom of the cover plate, and are used for welding with the connecting wire of the capacitor core.

[0005] The purpose of the utility model can also be solved by adopting the following technical measures:

[0006] As a more specific solution, the cover plate has a circular structure, and the two lead-out terminals are symmetrically arranged along the width direction on a symmetry line of the cover plate.

[0007] A fixing jig includes a jig base for limiting the front-back linear sliding of the above-mentioned capacitor cover plate. A welding station is arranged on the jig base. By sliding the capacitor cover plate back and forth, the bottom ends of the two lead-out terminals slide to the welding station successively.

[0008] As a further solution, a stepped concave surface for placing the capacitor cover plate is opened on the top surface of the jig base. A front limiting surface and a rear limiting surface are respectively arranged at the front and rear ends of the stepped concave surface; a relief groove for avoiding the two lead-out terminals is also concavely arranged on the stepped concave surface, and the inner side walls of the relief groove form side abutting surfaces for being abutted by the two lead-out terminals.

[0009] As a further solution, an open mouth with the same width and height as the avoidance groove is arranged on the outer side of the avoidance groove, and the open mouth forms a lateral access for the two lead-out terminals to slide horizontally into the avoidance groove.

[0010] As a further solution, the distance between the front wall or the rear wall of the avoidance groove and the adjacent lead-out terminal is greater than the maximum sliding distance between the front limiting surface or the rear limiting surface and the cover plate.

[0011] A welding device includes a workbench surface, and the above-mentioned fixed fixture is fixedly connected to the workbench surface.

[0012] As a further solution, a hot melt head and a lifting device for controlling the up and down movement of the hot melt head are arranged on the workbench surface, and the hot melt head is correspondingly placed directly above the welding station; a wire guiding tube for conveying the welding wire to the welding station is also arranged on the workbench surface, and the wire guiding tube is horizontally placed at the rear side of the fixed fixture.

[0013] As a further solution, an exhaust fan and a smoke suction pipe are arranged on the workbench surface; the exhaust fan is fixedly arranged on the left side or the right side of the fixed fixture, the smoke suction pipe is placed at the rear side of the fixed fixture, the suction end of the smoke suction pipe is connected with a smoke suction nozzle, and the smoke suction nozzle is placed above the fixed fixture and close to the welding station.

[0014] As a further solution, the lifting device includes a support column fixed on the workbench surface, a lifting cylinder is arranged on the support column, a hot melt head bracket is connected to the piston shaft of the lifting cylinder, and the hot melt head is fixedly connected to the hot melt head bracket.

[0015] The beneficial effects of the present utility model are as follows:

[0016] A capacitor cover plate, a fixed fixture and a welding device of the present utility model. The fixed fixture on this welding device ensures that the cover plate slides linearly back and forth along the side abutting surface by abutting the side abutting surfaces of the two lead-out terminals. When sliding back and forth, it cooperates with the front limiting surface and the rear limiting surface, so that the bottom ends of the two lead-out terminals can be aligned with the welding station successively, and the two welding points still maintain positioning during the switching, and the whole positioning process is fast and accurate, improving the welding quality and efficiency of the capacitor cover plate, ensuring the stability of the product, with a simple structure and low operation difficulty. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the capacitor cover plate in the present utility model.

[0018] Figure 2 It is a schematic structural diagram of the fixed fixture in the present utility model.

[0019] Figure 3 It is a schematic cross-sectional structural diagram of the fixed fixture in the present utility model.

[0020] Figure 4 This is a schematic structural diagram of the welding equipment in the present utility model.

[0021] Figure 5 This is a schematic top view structural diagram of the welding equipment in the present utility model.

[0022] Figure 6 This is a schematic sectional structural diagram of the welding equipment in the present utility model. Detailed implementation manners

[0023] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] As Figure 1 shown, in this embodiment, it is necessary to weld a capacitor cover plate, which includes a cover plate 1. Two parallel lead terminals 2 are arranged on the cover surface of the cover plate 1. The bottom ends of the two lead terminals 2 pass through the cover plate 1 and are led out from the bottom of the cover plate 1, and are used to be welded to the connecting wire 3 of the capacitor core; the cover plate 1 has a circular structure, and the two lead terminals 2 are symmetrically arranged along the width direction on a symmetry line of the cover plate 1.

[0025] When welding this capacitor cover plate, a fixing fixture is required. As Figure 2 and Figure 3 shown, the fixing fixture mainly includes a fixture base 4 for restricting the front and back linear sliding of the capacitor cover plate of the above structure. A welding station is provided on the fixture base 4. By sliding the capacitor cover plate back and forth, the bottom ends of the two lead terminals 2 are successively slid to the welding station.

[0026] A stepped concave surface 41 for placing the capacitor cover plate is formed on the top surface of the fixture base 4. A front limiting surface 42 and a rear limiting surface 43 are respectively provided at the front and rear ends of the stepped concave surface 41; a relief groove 44 for avoiding the two lead terminals 2 is also recessed on the stepped concave surface 41, and the inner side wall of the relief groove 44 forms a side abutting surface 45 for being abutted by the two lead terminals 2.

[0027] The fixing fixture on this welding equipment abuts against the side abutting surface 45 where the two lead terminals 2 are located, ensuring that the cover plate 1 linearly slides back and forth along the side abutting surface 45. When sliding back and forth, it cooperates with the front limiting surface 42 and the rear limiting surface 43, so that the bottom ends of the two lead terminals 2 can be successively aligned with the welding station. The two welding points still maintain positioning during the switching, and the whole positioning process is fast and accurate, improving the welding quality and welding efficiency of the capacitor cover plate, ensuring the stability of the product, with a simple structure and low operation difficulty.

[0028] Specific welding process: First, place the cover plate 1 upside down on the stepped concave surface 41, so that the two lead terminals 2 on the cover surface of the cover plate 1 are placed in the avoidance grooves 44. Then, adjust the angle of the cover plate 1 so that the end faces of the two lead terminals 2 abut against the side abutting surfaces 45. Then, slide the cover plate 1 forward until it abuts against the front limit surface 42. At this time, the bottom end of the rear lead terminal 2 will be aligned with the welding station. Then, weld the bottom end of the lead terminal 2. Subsequently, slide the cover plate 1 backward until it abuts against the rear limit surface 43. At this time, the bottom end of the front lead terminal 2 will immediately be aligned with the welding station. Finally, weld the bottom end of the lead terminal 2. After welding the two lead terminals 2 successively, the welding work of one product is completed.

[0029] An open mouth with the same width and height as the avoidance groove 44 is provided on the outside of the avoidance groove 44, and the open mouth forms a terminal side entrance and exit 46 for laterally sliding the two lead terminals 2 into the avoidance groove 44; since the hot melt head 6 is provided above the fixture base 4, sliding the capacitor cover plate into the stepped concave surface 41 from the side can avoid the hot melt head 6 and prevent possible scalding accidents when the worker's hand touches the hot melt head 6.

[0030] The distance H1 between the front wall 47 or the rear wall 48 of the avoidance groove 44 and the adjacent lead terminal 2 is greater than the maximum sliding distance H2 between the front limit surface 42 or the rear limit surface 43 and the cover plate 1; in other embodiments, the front limit surface 42 and the rear limit surface 43 can also be omitted, and the lead terminal 2 is used to abut against the front wall 47 or the rear wall 48 of the avoidance groove 44 for positioning and adjustment. However, in this embodiment, keeping a distance between the lead terminal 2 and the front wall 47 or the rear wall 48 can prevent the lead terminal 2 from colliding with the front wall 47 or the rear wall 48 and causing skew.

[0031] A welding device Figures 4 to 6 includes a workbench surface 5, and a fixed fixture with the above structure is fixedly connected to the workbench surface 5.

[0032] A hot melt head 6 and a lifting device for controlling the up and down movement of the hot melt head 6 are provided on the workbench surface 5, and the hot melt head 6 is correspondingly placed directly above the welding station; a wire guide tube 7 for conveying the welding wire 71 to the welding station is also provided on the workbench surface 5, and the wire guide tube 7 is horizontally placed at the rear side of the fixed fixture; by driving the hot melt head 6 to move up and down through the lifting device, the hot melt head 6 can be pressed against the bottom end of the lead terminal 2, melting the welding wire 71 originally placed between the hot melt head 6 and the cover plate 1 at the bottom end of the lead terminal 2, and placing the wire guide tube 7 at the rear side of the fixed fixture can avoid the operation space of the worker and facilitate the worker's work.

[0033] In addition, the wire guide tube 7 and the lifting device can also be linked. After one welding, while the lifting device drives the hot melt head 6 to move upward, it triggers the wire guide tube 7 to automatically advance a small section of welding wire 7 forward to the welding station.

[0034] An exhaust fan 8 and a smoke suction pipe 9 are arranged on the workbench surface 5; the exhaust fan 8 is fixedly arranged on the left or right side of the fixed fixture, the smoke suction pipe 9 is placed at the rear side of the fixed fixture, and a smoke suction nozzle 91 is connected to the suction end of the smoke suction pipe 9. The smoke suction nozzle 91 is placed above the fixed fixture and close to the welding station; the cooperation of the smoke suction pipe 9 and the smoke suction nozzle 91 can immediately suck away the smoke generated during welding, preventing workers from inhaling and affecting their health. In addition, the exhaust fan 8 works simultaneously during welding, causing the air near the welding station to flow, assisting in smoke exhaust and being able to suck away the odor generated during welding.

[0035] The lifting device includes a support column 10 fixed on the workbench surface 5. A lifting cylinder 11 is arranged on the support column 10. A hot melt head bracket 12 is connected to the piston shaft of the lifting cylinder 11, and the hot melt head 6 is fixedly connected to the hot melt head bracket 12; the up and down movement of the hot melt head 6 is realized through the movement of the lifting cylinder 11, with a simple structure and stable up and down movement.

[0036] The above is the preferred solution of the present invention, showing and describing the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A capacitor cover, characterized in that: It comprises a cover plate (1), wherein the cover surface of the cover plate (1) is provided with two lead-out terminals (2) arranged side by side, the bottom ends of the two lead-out terminals (2) pass through the cover plate (1) and are led out from the bottom of the cover plate (1) and are used for welding with the connecting wires (3) of the capacitor core.

2. A capacitor cover according to claim 1, characterized in that: The cover plate (1) has a circular structure, and the two lead terminals (2) are symmetrically arranged on a symmetry line of the cover plate (1) along the width direction.

3. A fixing fixture, characterized in that : It comprises a fixture seat (4) for limiting the linear sliding of the capacitor cover plate as claimed in claim 1 or 2, and a welding station is provided on the fixture seat (4). By sliding the capacitor cover plate back and forth, the bottom ends of the two lead terminals (2) slide to the welding station one after another.

4. A fixing fixture according to claim 3, characterized in that: The top surface of the clamp seat (4) is provided with a stepped concave surface (41) for placing a capacitor cover plate, and the front and rear ends of the stepped concave surface (41) are respectively provided with a front limit surface (42) and a rear limit surface (43); the stepped concave surface (41) is also provided with an avoidance groove (44) for avoiding two lead terminals (2), and the inner side wall of the avoidance groove (44) forms a side support surface (45) for being abutted by the two lead terminals (2).

5. A fixing fixture according to claim 4, characterized in that: An open opening of the same width and height as the avoidance groove (44) is provided on the outside of the avoidance groove (44), the open opening forming a terminal lateral entrance and exit (46) for sliding two lead-out terminals (2) into the avoidance groove (44) laterally.

6. A fixing fixture according to claim 4, characterized in that: The distance between the front wall (47) or the rear wall (48) of the avoidance groove (44) and the adjacent lead-out terminal (2) is greater than the maximum sliding distance between the front limit surface (42) or the rear limit surface (43) and the cover plate (1).

7. A welding device, characterized in that : comprising a work surface (5), to which a fixing fixture as claimed in any one of claims 3 to 6 is fixedly connected.

8. A welding device according to claim 7, characterized in that: The work surface (5) is provided with a hot melt head (6) and a lifting device for controlling the up and down lifting movement of the hot melt head (6), and the hot melt head (6) is correspondingly placed directly above the welding station; the work surface (5) is also provided with a wire guide tube (7) for conveying the welding wire (71) to the welding station, and the wire guide tube (7) is laterally placed on the rear side of the fixing fixture.

9. A welding device according to claim 7, characterized in that: An exhaust fan (8) and a smoking pipe (9) are arranged on the work surface (5); the exhaust fan (8) is fixedly arranged on the left or right side of the fixing fixture, the smoking pipe (9) is placed on the rear side of the fixing fixture, the suction end of the smoking pipe (9) is connected to a smoking nozzle (91), and the smoking nozzle (91) is placed above the fixing fixture and close to the welding station.

10. A welding device according to claim 8, characterized in that: The lifting device comprises a support column (10) fixed on a work surface (5), a lifting cylinder (11) being arranged on the support column (10), a hot melt head bracket (12) being connected to a piston shaft of the lifting cylinder (11), and the hot melt head (6) being fixedly connected to the hot melt head bracket (12).

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