Riveting equipment for lead strip for capacitor
By introducing corner parts and crimping parts into the riveting equipment of the capacitor, the corners of the lead lines are realized, which solves the short circuit problem caused by the contact between the lead lines and the aluminum shell, and improves the quality and reliability of the capacitor.
Patent Information
- Application Number
- CN202421297892.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-06
AI Technical Summary
In some capacitors, the corners of the leads are prone to contact with the aluminum shell, resulting in short circuit.
A lead-line riveting device for capacitors is designed. By providing a first folding part and a second folding part in the lower riveting die, combining the crimping part and the puncture needle of the upper riveting die, the corner folding corner treatment of the lead wire is realized, thereby avoiding contact with the aluminum shell.
This equipment can not only effectively rivet the lead lines and Huasi, but also fold the corners of the lead lines, reduce the risk of contact between the lead lines and the aluminum shell and improve the quality of the capacitor.
Smart Images
Figure CN222673574U_ABST
Abstract
Description
Technical Field
[0001] The utility model generally relates to the technical field of capacitors, and in particular to a lead wire riveting device for capacitors. Background Art
[0002] The capacitor includes an aluminum shell, a core package and an end cover. The core package is installed in the aluminum shell. The end cover is provided with positive and negative terminals and covers the top opening of the aluminum shell. The core package is connected to the positive terminal and the negative terminal respectively through two lead bars. The lead bar is usually a rectangular metal strip structure. Among them, the first end of the lead bar is electrically connected to the core package, and the second end of the lead bar is first riveted with a washer through a riveting device and then connected to the terminal. Specifically: the riveting device includes a riveting lower die and a riveting upper die that can move up and down. The riveting upper die is equipped with a piercing needle. During the riveting process, the staff places a washer on the loading surface of the riveting lower die and overlaps the second end of the lead bar on the top of the washer. Then, during the riveting process of the riveting lower die, the piercing needle is inserted into the washer to rivet the washer and the lead bar together. The terminal is installed on the riveted lead bar and washer.
[0003] However, in some types of capacitors, the connection terminals are arranged close to the aluminum shell, which may easily cause the corners of the lead bar to contact the aluminum shell, thereby causing a short circuit between the lead bar and the aluminum shell. Utility Model Content
[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a lead bar riveting device for a capacitor.
[0005] The present application also provides a capacitor lead wire riveting device, comprising:
[0006] The riveting lower die comprises a lower die seat, a washer placement portion and a first angled piece arranged along a first direction are provided on the top of the lower die seat, a first angled surface is provided on one side of the first angled piece, and the first angled surface is inclined relative to the first direction, and the first angled surface is higher than the washer placement portion;
[0007] The riveting upper die is liftably arranged above the riveting lower die, and the riveting upper die includes an upper die base and a puncture needle. A crimping surface is provided on one side of the upper die base close to the lower die base, and the puncture needle is installed on the upper die base and passes through the crimping surface. A crimping portion is convexly provided on the crimping surface, and the puncture needle and the crimping portion are arranged along a first direction, wherein in the moving direction of the riveting upper die, the projection of the first angled surface is located on one side of the projection of the crimping portion.
[0008] Furthermore, a second angle piece is provided on the top of the lower die base, and the second angle piece and the first angle piece are located on the same side of the washer placement portion. A second angle surface is provided on one side of the second angle piece, and the second angle surface is inclined relative to the first direction, and the second angle surface is higher than the washer placement portion, wherein along the moving direction of the riveting upper die, the projection of the crimping portion is located between the projection of the first angle surface and the projection of the second angle surface.
[0009] Further, an end of the first angled surface away from the washer placement portion intersects with an end of the second angled surface away from the washer placement portion.
[0010] Furthermore, the first angled surface and the second angled surface are symmetrically arranged along the first direction.
[0011] Furthermore, the angle formed between the first angled surface and the second angled surface is a right angle.
[0012] Further, the first angled surface is parallel to the moving direction of the riveting upper die; and / or the second angled surface is parallel to the moving direction of the riveting upper die.
[0013] Furthermore, the first angle piece is a first angle plate, the second angle piece is a second angle plate, the first angle surface is located on a side of the first angle plate close to the second angle plate, and the second angle surface is located on a side of the second angle plate close to the first angle plate.
[0014] Furthermore, the crimping portion is a rectangular parallelepiped structure arranged parallel to the first direction.
[0015] The capacitor lead bar riveting device provided by the present application is characterized in that a first angled piece is provided on the riveting lower die, and the washer placement portion and the first angled piece are arranged along a first direction, a first angled surface is provided on one side of the first angled piece, and the first angled surface is extended in a direction inclined relative to the first direction, the first angled surface is higher than the washer placement portion, a crimping portion is convexly provided on the crimping surface of the riveting upper die, and the puncture needle and the crimping portion are arranged along the first direction, the projection of the first angled surface along the moving direction of the riveting upper die is located on one side of the projection of the crimping portion, and the crimping portion of the riveting upper die presses down the protruding end of the lead bar and bends it downward during the riveting operation, and the corner of the protruding end of the lead bar will be lifted up and form an angle under the push of the first angled surface during the bending process, so that the lead bar riveting device not only has the function of riveting the lead bar and the washer, but also has the function of crimping the corners of the lead bar, thereby enriching the functionality of the lead bar riveting device, reducing the risk of contact between the lead bar and the aluminum shell, and improving the quality of the capacitor. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:
[0017] Figure 1 A schematic side view of a lead bar riveting device provided in an embodiment of the present application;
[0018] Figure 2 A schematic side view of a riveting upper die provided in an embodiment of the present application;
[0019] Figure 3 A schematic top view of the riveting lower die provided in an embodiment of the present application. DETAILED DESCRIPTION
[0020] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It is also necessary to explain that, for ease of description, only the parts related to the utility model are shown in the accompanying drawings.
[0021] Please refer to the attached Figure 1-3 The present application also provides a lead bar riveting device for a capacitor, including a frame and a riveting lower die 200 and a riveting upper die 100 arranged on the frame, the riveting upper die 100 is located above the riveting lower die 200, and the riveting upper die 100 is arranged to be raised and lowered relative to the riveting lower die 200. During the downward movement, the riveting lower die 200 cooperates with the riveting upper die 100 to complete the riveting between the lead bar and the washer 330.
[0022] The riveting lower die 200 includes a lower die base 210, and a washer placement portion is provided on the top of the lower die base 210. The washer placement portion is used to place the washer 330, and the washer placement portion can be but is not limited to a washer placement groove 212. A first angled piece 220 is also provided on the top of the lower die base 210. The washer placement portion and the first angled piece 220 are arranged along the first direction. A first angled surface is provided on one side of the first angled piece 220, and the first angled surface is inclined relative to the first direction, and the first angled surface is higher than the washer placement portion. The riveting upper die 100 includes an upper die base 110 and a puncture needle. A crimping surface 111 is provided on one side of the upper die base 110 close to the lower die base 210. The crimping surface 111 is crimped to the top surface of the lead wire during riveting. The puncture needle is installed on the upper die base 110 and passes through the crimping surface 111. The crimping surface 111 is convexly provided with a crimping portion 130, and the puncture needle and the crimping portion 130 are arranged along the first direction. In the moving direction of the riveting upper die 100 , the projection of the first angled surface is located on one side of the projection of the crimping portion 130 , so that the crimping position of the crimping portion 130 on the protruding end 340 is located on one side of the corner to be folded.
[0023] The riveting process of the riveting device provided in this embodiment is as follows: the washer 330 is placed on the washer placement part, the lead bar is overlapped and placed above the washer 330 along the first direction, and one end of the lead bar extends above the first angled surface. The end of the lead bar extending above the first angled surface is the extended end 340, and at this time, the extended end 340 can overlap the first angled piece 220 or have a gap with the first angled piece 220. Then, when the riveting upper die 100 and the riveting lower die 200 are riveted together to perform the riveting operation, the puncture needle will pass through the lead bar and penetrate into the washer 330. When the lead bar is penetrated by the puncture needle, a deformation part will be formed and the washer 330 will be riveted and fixed by the deformation part. During the above riveting operation, the crimping part 130 will press down the extended end 340 of the lead bar and bend it downward. During the bending process of the extended end 340, the corner of the extended end 340 will be reversely tilted and formed under the top push of the inclined first angled surface.
[0024] The lead bar riveting equipment provided in this embodiment not only has the function of riveting the lead bar and the washer 330 together, but also has the function of folding the corners of the lead bar, thereby enriching the functionality of the lead bar riveting equipment, reducing the risk of contact between the lead bar and the aluminum shell, and improving the quality of the capacitor.
[0025] The first direction is perpendicular to the moving direction of the riveting upper die 100. As shown in the drawings, the first direction is indicated by arrow A. The lead bar may be, but is not limited to, in a rectangular shape.
[0026] Optionally, the crimping portion 130 is a rectangular parallelepiped structure arranged parallel to the first direction, such as but not limited to a cube, which helps to form a bending angle with a good bending range and shape.
[0027] In some embodiments of the present application, a second angled piece 230 is further provided at the top of the lower die seat 210. The second angled piece 230 and the first angled piece 220 are located on the same side of the washer placement portion and are arranged opposite to each other. A second angled surface is provided on the side of the second angled piece 230 close to the first angled piece 220, and the second angled surface is inclined relative to the first direction, and the second angled surface is higher than the washer placement portion. When the lead bar is placed on the washer 330 along the first direction, the extended end 340 of the lead bar is located above the first angled surface and the second angled surface to bend the two opposite corners of the extended end 340. In the moving direction of the riveting upper die 100, the projection of the crimping portion 130 is located between the projection of the first angled surface and the projection of the second angled surface, so that the crimping position of the crimping portion 130 on the extended end 340 is located between the two corners to be formed.
[0028] In this embodiment, during the process of the protruding end 340 being pressed down and bent by the crimping portion 130, the two opposite corners of the protruding end 340 are respectively tilted in the opposite direction and form a fold under the push of the inclined first folding surface and the inclined second folding surface, so that the riveting equipment can simultaneously fold the two corners of the protruding end 340 of the lead bar, further reducing the risk of contact between the lead bar and the aluminum shell, and improving the folding efficiency of the lead bar.
[0029] Optionally, the crimping matching position of the crimping portion 130 and the protruding end 340 is located in the middle of the protruding end 340 and is arranged close to the end surface of the protruding end 340, so that the two corners are close in size.
[0030] Optionally, one end of the first angled surface away from the washer placement portion intersects with one end of the second angled surface away from the washer placement portion; or, one end of the first angled surface away from the washer placement portion and one end of the second angled surface away from the washer placement portion are arranged at intervals. When one end of the first angled surface away from the washer placement portion intersects with one end of the second angled surface away from the washer placement portion, the overall structure formed by the first angled piece 220 and the second angled piece 230 can have better stability, which helps to improve the service life of the angled pieces.
[0031] Optionally, the first angled surface and the second angled surface are symmetrically arranged along the first direction, so that the two angles of the protruding end 340 are the same size; or, the first angled surface and the second angled surface are asymmetrically arranged along the first direction, so that the two angles of the protruding end 340 are different sizes.
[0032] Optionally, the angle formed between the first angled surface and the second angled surface can be a right angle, an acute angle, or an obtuse angle. When the angle is an obtuse angle, the two angles formed will be relatively small; when the angle is an acute angle, the area of the crimping surface 111 of the crimping portion 130 to the protruding end 340 will be relatively small, so that the bending amplitude of the two angles formed is relatively low, and the effect of the angle avoiding the aluminum shell is not good. When the angle is a right angle, it can balance the size of the angle and the bending amplitude of the angle.
[0033] Optionally, the first angled surface is parallel to the moving direction of the riveting upper die 100; and / or the second angled surface is parallel to the moving direction of the riveting upper die 100, so that the bending angle of the angle is 90° or close to 90°, the bending amplitude of the angle is large, and it has a good effect of avoiding the aluminum shell. Of course, the first angled surface and the second angled surface can also be inclined outward relative to the moving direction of the riveting upper die 100, so that the bending amplitude of the angle is relatively small.
[0034] Optionally, the first angle piece 220 is a first angle plate, the second angle piece 230 is a second angle plate, the first angle surface is located on the side of the first angle plate close to the second angle plate, and the second angle surface is located on the side of the second angle plate close to the first angle plate, which can simplify the structure of the angle piece and reduce the cost of the lead wire riveting equipment. Of course, the angle piece is not limited to the above, for example, in other embodiments, an angle block is provided on one side of the washer placement portion, the first angle piece 220 and the second angle piece 230 are different parts of the angle block, and a triangular notch is provided on the side of the angle block close to the washer placement portion, and the opposite sides of the notch are the first angle surface and the second angle surface, respectively.
[0035] In some embodiments of the present application, a third angle piece may be further included. The third angle piece is disposed between the first angle piece 220 and the second angle piece 230 and is disposed near the washer placement portion. The third angle piece may be, but is not limited to, a third angle plate. The third angle plate is perpendicular to the first direction. The third angle plate, the first angle plate, and the second angle plate are disposed at the same height. In the moving direction of the riveting upper die 100, the projection of the third angle plate is located on the side of the projection of the crimping portion 130 close to the washer placement portion, so as to reduce the length of the lower folded portion in the end of the lead strip.
[0036] In some embodiments of the present application, two washers are provided on the top of the riveting lower mold 200, and the two washers are arranged at intervals along the second direction. A group of first corner pieces 220 and second corner pieces 230 are provided on one side of each washers placement portion. The riveting upper mold 100 is provided with two piercing needles 120, and the two piercing needles 120 are arranged at intervals along the second direction and a crimping portion 130 is provided on one side of each piercing needle 120. The second direction, the first direction and the moving direction of the riveting upper mold 100 are perpendicular to each other. The capacitor includes a positive lead bar 310 and a negative lead bar 320. When using a riveting device, two washers 330 are placed on two washers placement parts respectively. The positive lead bar 310 and the negative lead bar 320 are respectively overlapped on top of the two washers 330 and the protruding ends 340 of the positive lead bar 310 and the negative lead bar 320 are respectively located above each group of first angled surfaces and second angled surfaces. The riveting device can rivet washers 330 on both the positive lead bar 310 and the negative lead bar 320 and perform angle processing on the protruding ends 340 of the positive lead bar 310 and the negative lead bar 320, thereby improving the working efficiency of the riveting device.
[0037] Please refer to the attached Figure 3The top of the lower mold base 210 is recessed with two lead bar placement grooves 211 both arranged along the first direction, the lead bar placement grooves 211 are used to accommodate part of the lead bar, the two lead bar placement grooves 211 are spaced apart, the bottom groove wall of the lead bar placement groove 211 is recessed with a washer placement groove 212, the bottom groove wall of the lead bar placement groove 211 is provided with a first angle plate and a second angle plate, and the first angle plate and the second angle plate are both located on one side of the washer placement groove 212, and an end of the first angle plate away from the washer placement groove 212 is connected to an end of the second angle plate away from the washer placement groove 212.
[0038] It should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like used above to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means more than two.
[0039] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the utility model involved in the present application is not limited to the technical solution formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the concept of the utility model. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical solution.
Claims
1. A capacitor lead wire riveting device, characterized in that: include: A riveting lower die, the riveting lower die comprising a lower die seat, a washer placement portion and a first angled piece arranged along a first direction are provided on the top of the lower die seat, a first angled surface is provided on one side of the first angled piece and the first angled surface is inclined relative to the first direction, and the first angled surface is higher than the washer placement portion; A riveting upper die, wherein the riveting upper die can be raised and lowered above the riveting lower die, the riveting upper die comprises an upper die seat and a puncture needle, a crimping surface is provided on one side of the upper die seat close to the lower die seat, the puncture needle is mounted on the upper die seat and passes through the crimping surface, a crimping portion is convexly provided on the crimping surface, and the puncture needle and the crimping portion are arranged along the first direction, wherein in the moving direction of the riveting upper die, the projection of the first angled surface is located on one side of the projection of the crimping portion.
2. The capacitor lead wire riveting equipment according to claim 1, characterized in that: A second angled piece is also provided on the top of the lower die base, and the second angled piece and the first angled piece are located on the same side of the washer placement portion. A second angled surface is provided on one side of the second angled piece, and the second angled surface is inclined relative to the first direction, and the second angled surface is higher than the washer placement portion, wherein in the moving direction along the riveting upper die, the projection of the crimping portion is located between the projection of the first angled surface and the projection of the second angled surface.
3. The capacitor lead wire riveting equipment according to claim 2, characterized in that: One end of the first angled surface away from the washer placement portion intersects with one end of the second angled surface away from the washer placement portion.
4. The capacitor lead wire riveting equipment according to claim 2, characterized in that: The first angled surface and the second angled surface are symmetrically arranged along the first direction.
5. The capacitor lead wire riveting equipment according to claim 2, characterized in that: The included angle between the first angled surface and the second angled surface is a right angle.
6. The capacitor lead wire riveting equipment according to claim 2, characterized in that: The first angled surface is parallel to the moving direction of the riveting upper die; and / or the second angled surface is parallel to the moving direction of the riveting upper die.
7. The capacitor lead bar riveting equipment according to claim 2, characterized in that: The first angle piece is a first angle plate, the second angle piece is a second angle plate, the first angle surface is located on a side of the first angle plate close to the second angle plate, and the second angle surface is located on a side of the second angle plate close to the first angle plate.
8. The capacitor lead bar riveting equipment according to claim 1, characterized in that: The crimping portion is a rectangular parallelepiped structure arranged parallel to the first direction.