A process for centering multi-core cylindrical capacitors
By using a core centering clamp and positioning pins, the problem of welding deformation in multi-core capacitors was solved, and the coaxiality and insulation performance of the core assembly were improved.
Patent Information
- Application Number
- CN202311287736.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-10-07
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2043-10-07
AI Technical Summary
In film capacitors, when multiple cores are welded in parallel or series, misalignment of the cores can lead to welding deformation, affecting the filling and insulation performance of the adhesive mixture.
The process of using a core centering clamp and a centering positioning pin ensures that the upper and lower core units are coaxial. They are fixed by welding with connecting copper strips, and the centering positioning pin is used to keep the relative position of the core assembly stable.
This effectively ensures the consistency of the gap between the core assembly and the outer shell, avoids air bubble residue, and improves the insulation performance and lifespan of the product.
Smart Images
Figure CN117260119B_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of capacitor production, in particular to a process for center positioning of a multi-core cylindrical capacitor. BACKGROUND
[0002] In the thin film capacitor industry, when a circular shell is used for packaging, if multiple cores are connected in parallel or series, the core placement is generally vertical stacking. If the core centering structure is not designed in the welding process, local welding deformation may occur, and the cores in each layer may not be centered, resulting in inconsistent gaps between the cores and the shell. During the AB mixed glue filling process, the flowability of the side with a small gap is poor, affecting the filling of the mixed glue, and air bubbles may be generated, which affects the product life. In addition, the small gap may also cause the mixed glue for insulation to be thin on one side and thick on the other side, affecting the insulation performance of the product.
[0003] Therefore, a new product structure and production process for a multi-core cylindrical capacitor are needed to improve the centering coaxiality of the multi-core cylindrical capacitor. SUMMARY
[0004] The present application aims to at least solve one of the technical problems in the prior art. To this end, the present application proposes a process for center positioning of a multi-core cylindrical capacitor.
[0005] An embodiment of the present application adopts the technical solution to solve its technical problem: a process for center positioning of a multi-core cylindrical capacitor, comprising the following steps:
[0006] S1: a plurality of capacitor core assemblies are divided into a lower core unit and an upper core unit to be welded; the lower core unit is a single capacitor core or a plurality of capacitor cores that have been longitudinally positioned and welded;
[0007] S2: the lower core unit is abutted against the front end of a core centering clamp, and the upper core unit is placed on the upper end of the core centering clamp; the core centering clamp can make the axes of the upper core unit and the lower core unit in the same vertical plane;
[0008] S3: one end of the upper core connecting copper strip is welded to the lower end of the upper core unit, and one end of the lower core connecting copper strip is welded to the upper end of the lower core unit;
[0009] S4: one end of the centering positioning pin is inserted into the middle of the core rod end face of the upper core unit or the lower core unit;
[0010] S5: the upper core unit is turned over, and the other end of the centering positioning pin is inserted into the middle of the core rod end face of the lower core unit or the upper core unit; the upper core unit, the centering positioning pin, and the lower core unit form a core group;
[0011] S6; put the core group into the capacitor shell, and fill the mixed glue into the capacitor shell.
[0012] Optionally, the core centering clamp comprises a clamp body; the upper side of the clamp body is a V-shaped upper V-shaped groove, and the side of the clamp is a V-shaped front V-shaped groove; the centers of the upper V-shaped groove and the front V-shaped groove are in the same vertical plane.
[0013] The upper core unit can be placed in the upper V-shaped groove, and the lower core unit can be abutted against the front V-shaped groove.
[0014] Optionally, the clamp body further comprises two limiting bosses; the two limiting bosses are symmetrically and spaced apart from each other at one end of the upper V-shaped groove close to the front V-shaped groove; and the end surface of the upper core unit can abut against the limiting boss.
[0015] Optionally, the core centering clamp further comprises a telescopic workbench; the clamp body is arranged above the telescopic workbench; and the telescopic workbench can be telescoped up and down and can change the position of the clamp body.
[0016] Optionally, the upper V-shaped groove extends along the horizontal direction, the front V-shaped groove extends along the vertical direction, and the centers of the upper V-shaped groove and the front V-shaped groove are arranged at a 90-degree angle.
[0017] Optionally, the centering positioning pin comprises a vertical positioning pin and a horizontal spacing rib; the two ends of the vertical positioning pin can be respectively inserted into the middle part of the end surface of the core rod of the upper core unit or the lower core unit; the horizontal spacing rib is arranged in the middle part of the vertical positioning pin and extends along the radial direction; and the horizontal spacing rib can abut against the upper core unit or the lower core unit.
[0018] Optionally, in the step S6, the top cover of the capacitor shell is provided with a capacitor cover plate, the middle part of the capacitor cover plate is provided with a cover plate positioning column, and the cover plate positioning column can be inserted into the middle part of the core rod at the top of the core group.
[0019] Optionally, the capacitor cover plate is provided with a plurality of filler grooves.
[0020] Optionally, in step S6, the mixed glue is AB glue or epoxy resin.
[0021] The beneficial effects of the present application are as follows: the upper core connecting copper band is welded to the lower end of the upper core unit, and the lower core connecting copper band is welded to the upper end of the lower core unit, so that the connecting copper band and the capacitor core are fixed and the relative position is accurately fixed, then the upper core unit is turned over, the central positioning pins are inserted into the middle of the core rod end face of the upper core unit and the lower core unit, and the core group with accurate and stable relative position is formed; the core group can effectively maintain the stability of the relative position and the central coaxiality of the upper core unit and the lower core unit during the transfer movement; when the core group is installed in the capacitor shell, the consistency of the core group and the gap around the shell can be effectively ensured, the mixed glue filling is not affected by the small gap, and the phenomenon of air bubbles and residual air in the capacitor due to the gap difference is effectively avoided, the product life is effectively ensured, the mixed glue filling gap is uniform, and the insulation performance of the product is effectively ensured.
[0022] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS
[0023] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
[0024] Fig. 1 It is a structural schematic diagram of the core centering clamp of the present application;
[0025] Fig. 2 It is a structural schematic diagram of the core centering clamp of the present application;
[0026] Fig. 3 It is a structural schematic diagram of the core centering clamp of the present application;
[0027] Main element symbol explanation:
[0028] 10, upper core unit; 11, upper core connecting copper band; 20, lower core unit; 21, lower core connecting copper band; 30, core centering clamp; 31, clamp main body; 311, upper V-shaped groove; 312, front side V-shaped groove; 313, limiting boss; 32, telescopic workbench; 40, central positioning pin; 41, vertical positioning pin column; 42, transverse spacing rib; 50, capacitor shell; 60, mixed glue; 70, capacitor cover plate; 71, cover plate positioning column; 72, filler groove. DETAILED DESCRIPTION
[0029] This section will describe in detail specific embodiments of the present invention. Preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but they should not be construed as limiting the scope of protection of the present invention.
[0030] In the description of this invention, "multiple" means two or more; "greater than," "less than," and "exceeding" are understood to exclude the stated number; "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0031] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.
[0032] In this invention, unless otherwise explicitly defined, the terms "setting," "installing," and "connecting" should be interpreted broadly. For example, they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to a fixed connection, a detachable connection, or an integrally formed connection; they can refer to a mechanical connection; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.
[0033] Example
[0034] Reference Figs. 1 to 3 The present invention proposes a process for centering a multi-core cylindrical capacitor, comprising the following steps:
[0035] S1: Several capacitor core assemblies are divided into lower core units 20 and upper core units 10 to be welded; the lower core unit 20 is a single capacitor core, or multiple capacitor cores that have been longitudinally positioned and welded.
[0036] S2: Place the lower core unit 20 against the front end of the core centering fixture 30, and place the upper core unit 10 on the upper end of the core centering fixture 30; the core centering fixture 30 can make the axes of the upper core unit 10 and the lower core unit 20 lie in the same vertical plane.
[0037] S3: weld one end of the upper core connecting copper band 11 to the lower end of the upper core unit 10; weld one end of the lower core connecting copper band 21 to the upper end of the lower core unit 20;
[0038] S4: insert one end of the center positioning pin 40 into the middle of the core rod end face of the upper core unit 10 or the lower core unit 20;
[0039] S5: flip the upper core unit 10, so that the other end of the center positioning pin 40 is inserted into the middle of the core rod end face of the lower core unit 20 or the upper core unit 10; the upper core unit 10, the center positioning pin 40, and the lower core unit 20 form a core group;
[0040] S6: place the core group into the capacitor housing 50, and fill the mixed glue 60 into the capacitor housing 50.
[0041] In the present application, the upper core connecting copper band 11 is welded to the lower end of the upper core unit 10, and the lower core connecting copper band 21 is welded to the upper end of the lower core unit 20, so that the connecting copper band is fixedly welded to the capacitor core and the relative position is accurately fixed. Then, the upper core unit 10 is flipped, the center positioning pin 40 is inserted into the middle of the core rod end face of the upper core unit 10 and the lower core unit 20, and a core group with accurate and stable relative position is formed. The core group can effectively maintain the stability of the relative position and the centering coaxiality of the upper core unit 10 and the lower core unit 20 during the transfer movement. When the core group is installed in the capacitor housing 50, the consistency of the core group and the gap around the housing can be effectively ensured, the filling of the mixed glue 60 is not affected by the small gap, and the phenomenon of air bubbles and residual air in the capacitor due to the difference in the gap is effectively avoided, the product life is effectively ensured, the gap filled by the mixed glue 60 is uniform, and the insulation performance of the product is effectively ensured.
[0042] In the present embodiment, for a cylindrical capacitor product composed of more cores, the core group composed of the upper core unit 10, the center positioning pin, and the lower core unit 20 can be used as the lower core unit 20 of the next round of centering positioning process, and the centering positioning welding is performed again on another upper core unit 10 to ensure the coaxiality of the multiple capacitor cores.
[0043] In the embodiment, the core centering clamp 30 comprises a clamp body 31; the upper side of the clamp body 31 is an upper V-shaped groove 311, and the side of the clamp is a front side V-shaped groove 312; the centers of the upper V-shaped groove 311 and the front side V-shaped groove 312 are in the same vertical plane; the upper core unit 10 can be placed in the upper V-shaped groove 311; and the lower core unit 20 can be placed in the front side V-shaped groove 312. The upper V-shaped groove 311 and the front side V-shaped groove 312 can effectively center and align the central axes of the upper core unit 10 and the lower core unit 20, so that they are in the same vertical plane; and then the copper band welding and fixing of step S3 is performed.
[0044] In step S3, specifically, after the core is placed in the center, the copper band for connecting the two cores is connected to the core plating surface.
[0045] Further, the clamp body 31 further comprises two limiting bosses 313; the two limiting bosses 313 are symmetrically and spacedly arranged at one end of the upper V-shaped groove 311 close to the front side V-shaped groove 312; and the end surface of the upper core unit 10 can abut against the limiting bosses 313. The end surface of the upper core unit 10 can abut against the two limiting bosses 313, so as to ensure the spacing between the end surfaces of the upper core unit 10 and the lower core unit 20, so that after the centering positioning pin 40 is inserted into the upper core unit 10, there is enough space to flip and insert into the lower core unit 20.
[0046] In the embodiment, the core centering clamp 30 further comprises a telescopic workbench 32; the clamp body 31 is arranged above the telescopic workbench 32; and the telescopic workbench 32 can be telescoped up and down and can change the position of the clamp body 31. The telescopic workbench 32 is telescoped up and down to adjust the position of the clamp body 31, so as to match different sizes of the capacitor core or the lower core unit 20 composed of multiple capacitor cores for centering positioning.
[0047] In the embodiment, the upper V-shaped groove 311 extends along the horizontal direction, and the front side V-shaped groove 312 extends along the vertical direction; the centers of the upper V-shaped groove 311 and the front side V-shaped groove 312 are arranged at a 90-degree angle.
[0048] In the embodiment, the centering positioning pin 40 comprises a vertical positioning pin column 41 and a transverse partition rib 42; the two ends of the vertical positioning pin can be respectively inserted into the middle part of the core rod end surface of the upper core unit 10 or the lower core unit 20; the transverse partition rib 42 is arranged at the middle part of the vertical positioning pin column 41 and extends along the radial direction; and the transverse partition rib 42 can abut against the upper core unit 10 or the lower core unit 20. The vertical positioning pin column 41 can be inserted into the middle part of the core rod end surface of the core, so as to maintain the coaxiality of the upper and lower cores; and through the transverse partition rib 42, the equal-interval spacing separation can be maintained, so as to prevent the direct contact of the end surfaces of the two.
[0049] Further, the transverse partition ribs 42 can be provided in plurality and arranged uniformly in the circumferential direction at the middle portion of the vertical positioning pin.
[0050] In the embodiment, in step S6, the top cover of the capacitor housing 50 is provided with a capacitor cover plate 70, the middle portion of the capacitor cover plate 70 is provided with a cover plate positioning column 71, the cover plate positioning column 71 can be inserted into the middle portion of the core rod at the top of the core group. By matching the cover plate positioning column 71 of the capacitor cover plate 70 with the middle portion of the core rod of the capacitor core at the top of the core group, the core group can be aligned with the middle and lower portion of the capacitor cover plate 70, and the coaxiality of the capacitor cover plate 70 and the core group can be ensured.
[0051] Further, in order to facilitate the filling of the mixing cavity, the capacitor cover plate 70 is provided with a plurality of filling grooves 72.
[0052] In other embodiments, the bottom of the capacitor housing 50 can also be provided with a bottom positioning column, which can be inserted into the middle portion of the core rod at the bottom of the core group, further ensuring the coaxiality of the core group and the capacitor housing 50 and ensuring the consistency of the filling gap of the mixed glue 60.
[0053] In the embodiment, in step S6, the mixed glue 60 can be AB glue or epoxy resin.
[0054] Of course, the present application is not limited to the above-mentioned embodiments, and those skilled in the art can make equivalent modifications or replacements without departing from the spirit of the present application, and these equivalent modifications and replacements are all included in the scope defined by the claims of the present application.
Claims
1. A process for centering and positioning a multi-core cylindrical capacitor, characterized in that, Includes the following steps: S1: Several capacitor core components are divided into lower core units (20) and upper core units (10) to be welded; the lower core unit (20) is a single capacitor core, or multiple capacitor cores that have been longitudinally positioned and welded. S2: Place the lower core unit (20) against the front end of the core centering fixture (30), and place the upper core unit (10) on the upper end of the core centering fixture (30); the core centering fixture (30) can make the axes of the upper core unit (10) and the lower core unit (20) be in the same vertical plane. The core centering fixture (30) includes a fixture body (31); the upper side of the fixture body (31) is a V-shaped upper V-groove (311), and the side of the fixture body (31) is a V-shaped front V-groove (312); the centers of the upper V-groove (311) and the front V-groove (312) are on the same vertical plane; the upper core unit (10) can be placed in the upper V-groove (311); the lower core unit (20) can abut against the front V-groove (312); The fixture body (31) also includes two limiting bosses (313); the two limiting bosses (313) are symmetrically spaced at one end of the upper V-groove (311) near the front V-groove (312); the end face of the upper core sub-unit (10) can abut against the limiting bosses (313); The core centering fixture (30) also includes a telescopic worktable (32); the fixture body (31) is located above the telescopic worktable (32); the telescopic worktable (32) can extend and retract vertically and can change the position of the fixture body (31); S3: Weld one end of the upper core connecting copper strip (11) to the lower end of the upper core unit (10); weld one end of the lower core connecting copper strip (21) to the upper end of the lower core unit (20); S4: Insert one end of the centering positioning pin (40) into the middle of the mandrel end face of the upper core unit (10) or the lower core unit (20); S5: Flip the upper core unit (10) so that the other end of the centering positioning pin (40) is inserted into the middle of the mandrel end face of the lower core unit (20) or the upper core unit (10); so that the upper core unit (10), the centering positioning pin (40) and the lower core unit (20) form a core group; S6; Place the core assembly into the capacitor housing (50) and fill the capacitor housing (50) with mixed adhesive (60).
2. The process for centering and positioning a multi-core cylindrical capacitor according to claim 1, characterized in that: The upper V-groove (311) extends horizontally, and the front V-groove (312) extends vertically; the upper V-groove (311) and the front V-groove (312) are arranged at a 90-degree angle.
3. The process for centering and positioning a multi-core cylindrical capacitor according to claim 1, characterized in that: The centering positioning pin (40) includes a vertical positioning pin (41) and a horizontal partition (42); the two ends of the vertical positioning pin can be inserted into the middle of the mandrel end face of the upper core unit (10) or the lower core unit (20); the horizontal partition (42) is located in the middle of the vertical positioning pin (41) and extends radially; the horizontal partition (42) can abut between the upper core unit (10) or the lower core unit (20).
4. The process for centering and positioning a multi-core cylindrical capacitor according to claim 1, characterized in that: In step S6, a capacitor cover plate (70) is provided on the top of the capacitor housing (50), and a cover plate positioning post (71) is provided in the middle of the capacitor cover plate (70). The cover plate positioning post (71) can be inserted into the middle of the core rod at the top of the core assembly.
5. The process for centering and positioning a multi-core cylindrical capacitor according to claim 4, characterized in that: The capacitor cover plate (70) has several filling grooves (72).
6. The process for centering and positioning a multi-core cylindrical capacitor according to claim 1, characterized in that: In step S6, the mixed adhesive (60) is AB glue or epoxy resin.
Citation Information
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