Anti-warping fixture for electroplating
By using a clamping assembly with oblique and vertical elongated holes in the electroplating fixture, the problem of product warping during vertical electroplating was solved, the workpiece was fully unfolded, and the dimensional accuracy and appearance quality of the product were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHONGKE XIANFENG (SUZHOU) INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-06-26
AI Technical Summary
In existing vertical electroplating technology, it is difficult to eliminate the warping phenomenon of products in the left and right directions, which affects product quality and production efficiency.
An anti-warping electroplating fixture is adopted, which includes a mounting frame, a tensioning bracket, an electroplating frame, and a clamping assembly. Through the sliding fit of oblique and vertical elongated holes, a synergistic constraint structure is formed with multi-directional tension at the top and stable clamping at the bottom, ensuring that the workpiece is fully unfolded.
It effectively suppresses warping deformation caused by coating stress and residual stress in the substrate, improving the dimensional accuracy and appearance quality of the product.
Smart Images
Figure CN224411952U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an anti-warping electroplating fixture, belonging to the field of electroplating fixture technology. Background Technology
[0002] Vertical electroplating technology, with its efficient and uniform coating deposition characteristics, is widely used in printed circuit boards (PCBs) and precision metal components. However, during the vertical electroplating process, products (such as PCB substrates and thin metal sheets) are prone to warping and deformation due to factors such as coating stress, residual stress in the substrate, and fluctuations in process parameters. This not only affects the dimensional accuracy and appearance quality of the products but may also lead to difficulties in subsequent assembly and performance degradation, severely restricting production efficiency and product yield.
[0003] To alleviate product warping, the industry commonly uses upper tensioning fixtures for product correction. These fixtures apply clamping or tension forces to the upper and lower edges of the product, using vertical constraints to counteract the product's warping tendency in the vertical direction, thus improving the vertical deformation problem to some extent.
[0004] However, in actual production, it was found that even with the use of an upper tensioning fixture, the warping of the product in the left and right directions was still difficult to eliminate, becoming a key bottleneck restricting the improvement of product quality. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a clamp for electroplating that prevents warping.
[0006] To achieve the above objectives, the technical solution adopted by this utility model is: an anti-warping electroplating fixture, comprising...
[0007] Mounting rack;
[0008] The tensioning bracket is horizontally installed at the bottom of the mounting frame, and multiple tensioning parts are spaced apart on the top of the tensioning bracket; oblique elongated holes are provided on the tensioning parts at both ends of the tensioning bracket, with the upper side of the oblique elongated holes facing the end of the tensioning bracket, and the oblique elongated holes on the tensioning parts at both ends of the tensioning bracket are symmetrically arranged; vertical elongated holes are provided on the tensioning parts in the middle of the tensioning bracket.
[0009] An electroplating frame is set on the lower side of the tensioning bracket and forms a rectangular frame structure with the tensioning bracket. The rectangular frame structure is used to place the workpiece to be electroplated.
[0010] The first clamping assembly is provided in multiple ways, and each of them is used to clamp the upper part of the workpiece to be electroplated. The multiple first clamping assemblies are sequentially installed on the tensioning part of the tensioning bracket and slide in cooperation with the oblique elongated hole or vertical elongated hole on the tensioning part to tension the upper part of the workpiece to be electroplated in the vertical or oblique direction.
[0011] The second clamping assembly is provided in multiple ways. The multiple second clamping assemblies are spaced apart at the bottom of the electroplating frame and are all used to clamp the lower part of the workpiece to be electroplated.
[0012] Preferably, the first clamping assembly includes a mounting plate, a first clamp, a second clamp, and a drive handle; the mounting plate is connected to the tensioning part of the tensioning bracket and slides in cooperation with an oblique or vertical elongated hole on the tensioning part; the first clamp is disposed at the bottom of the mounting plate; the second clamp is disposed on the opposite side of the first clamp; the drive handle is used to drive the second clamp to clamp the first clamp together; the second clamping assembly is the same as the first clamping assembly.
[0013] Preferably, the tensioning part is integrally formed on the tensioning bracket.
[0014] Preferably, the tensioning bracket has four tensioning parts, with oblique elongated holes on the two tensioning parts at both ends of the tensioning bracket and vertical elongated holes on the two tensioning parts in the middle of the tensioning bracket; the number of the first clamping components is the same as the number of tensioning parts.
[0015] Preferably, the electroplating frame is U-shaped, and the upper ends of both sides of the electroplating frame are fixed to the two ends of the tensioning bracket by connectors.
[0016] Preferably, both sides of the electroplating frame are provided with adjusting sleeves, the inner wall of the adjusting sleeve is provided with protrusions, the side frame of the electroplating frame extends into the adjusting sleeve, and the side frame of the electroplating frame is provided with grooves that match the protrusions. The electroplating frame and the adjusting sleeve are engaged through the grooves and protrusions.
[0017] Preferably, the bottom of the electroplating frame is provided with multiple load-bearing blocks.
[0018] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0019] The first clamping component of this utility model can tension the upper part of the workpiece to be electroplated in the inclined direction and the vertical direction respectively by slidingly engaging with the oblique elongated hole and the vertical elongated hole on the tensioning part. Combined with the clamping of the lower part of the workpiece by the second clamping component, a synergistic constraint structure of "multi-directional tensioning of the upper part and stable clamping of the lower part" is formed, thereby ensuring that the workpiece to be electroplated is fully unfolded and avoiding workpiece warping. Attached Figure Description
[0020] The technical solution of this utility model will be further described below with reference to the accompanying drawings:
[0021] Appendix Figure 1 This is a schematic diagram of the structure of an anti-warping electroplating fixture according to the present invention;
[0022] Appendix Figure 2 This is a partial structural schematic diagram of an anti-warping electroplating fixture according to the present invention;
[0023] Appendix Figure 3 This is a schematic diagram of the structure of the first clamping component of this utility model in conjunction with the oblique elongated hole and the vertical elongated hole.
[0024] In the diagram: 1. Mounting bracket; 2. Tensioning bracket; 21. Tensioning part; 211. Angled elongated hole; 212. Vertical elongated hole; 3. Electroplating frame; 31. Adjusting sleeve; 32. Groove; 33. Load-bearing block; 4. Workpiece to be electroplated; 5. First clamping assembly; 51. Mounting plate; 52. First chuck; 53. Second chuck; 54. Drive handle; 6. Second clamping assembly; 7. Connector. Detailed Implementation
[0025] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0026] As attached Figure 1-3 As shown, the anti-warping electroplating fixture of this utility model includes a mounting frame 1, a tensioning bracket 2, an electroplating frame 3, a first clamping component 5, and a second clamping component 6.
[0027] Mounting bracket 1 serves as the basic support component of the entire fixture, used to fix the entire fixture to the electroplating equipment; tension bracket 2 is horizontally set at the bottom of mounting bracket 1 and can be fixed to mounting bracket 1 with bolts; electroplating frame 3 is set on the lower side of tension bracket 2, wherein the electroplating frame 3 is U-shaped, and the upper ends of both sides of the electroplating frame 3 are respectively fixed to the two ends of tension bracket 2 through connectors 7, so that the electroplating frame 3 and tension bracket 2 form a rectangular frame structure, and the rectangular frame structure is used to place the workpiece 4 to be electroplated.
[0028] The top of the tensioning bracket 2 is provided with multiple tensioning parts 21 at intervals. The tensioning parts 21 are integrally formed on the tensioning bracket 2 to ensure structural strength. The tensioning parts 21 at both ends of the tensioning bracket 2 are provided with oblique elongated holes 211, the upper side of which faces the end of the tensioning bracket 2. The oblique elongated holes 211 on the tensioning parts 21 at both ends of the tensioning bracket 2 are symmetrically arranged. The tensioning parts 21 in the middle of the tensioning bracket 2 are provided with vertical elongated holes 212.
[0029] In this embodiment, the tensioning bracket 2 has four tensioning parts 21. The two tensioning parts 21 located at both ends of the tensioning bracket 2 have oblique elongated holes 211, and the two tensioning parts 21 located in the middle of the tensioning bracket 2 have vertical elongated holes 212. In actual application, the number of tensioning parts 21 can be adjusted according to the actual situation.
[0030] Multiple first clamping components 5 are provided, and all of them are used to clamp the upper part of the workpiece 4 to be electroplated. Specifically, multiple first clamping components 5 are sequentially installed on the tensioning part 21 of the tensioning bracket 2, and slide in cooperation with the oblique elongated hole 211 or the vertical elongated hole 212 on the tensioning part 21 to tension the upper part of the workpiece 4 to be electroplated in the vertical or oblique direction. In this embodiment, the number of first clamping components 5 is consistent with the number of tensioning parts 21, which is four.
[0031] As attached Figure 3 As shown, specifically, the first clamping assembly 5 includes a mounting plate 51, a first chuck 52, a second chuck 53, and a drive handle 54. The mounting plate 51 is connected to the tensioning part 21 of the tensioning bracket 2 by fasteners such as bolts, and the bolts pass through the oblique elongated hole 211 or the vertical elongated hole 212 on the tensioning part 21, so that the mounting plate 51 can slide along the oblique elongated hole 211 or the vertical elongated hole 212 on the tensioning part 21. The first chuck 52 is located at the bottom of the mounting plate 51, and the second chuck 53 is located on the opposite side of the first chuck 52, forming a clamping space with the first chuck 52. The drive handle 54 is used to drive the second chuck 53 to clamp the first chuck 52 together. The drive handle 54 can be connected to the second chuck 53 through a linkage or gear structure, so that when the drive handle 54 is rotated, the second chuck 53 can be driven to move closer to or away from the first chuck 52, thereby achieving clamping or loosening of the upper part of the workpiece 4 to be electroplated.
[0032] During operation, the first clamping assembly 5 installed on the tensioning parts 21 at both ends can slide along the oblique elongated hole 211 in the inclined direction, thereby tensioning the upper part of the workpiece 4 to be electroplated in the inclined direction; the first clamping assembly 5 installed on the middle tensioning part 21 can slide along the vertical elongated hole 212 in the vertical direction, thereby tensioning the upper part of the workpiece 4 to be electroplated in the vertical direction to ensure that the workpiece 4 to be electroplated is fully unfolded and to avoid local warping.
[0033] It should be noted that each first clamping component 5 is installed independently. Therefore, during the tensioning operation, the workpiece 4 to be electroplated can be tensioned separately in the inclined direction or in the vertical direction. At the same time, it can be tensioned in both the inclined and vertical directions to ensure the flexibility of the tensioning operation.
[0034] Multiple second clamping components 6 are provided, and their number can be flexibly adjusted according to the length of the workpiece 4 to be electroplated. Multiple second clamping components 6 are spaced apart at the bottom of the electroplating frame 3, and are all used to clamp the lower part of the workpiece 4 to be electroplated. The second clamping components 6 are the same as the first clamping components 5, and will not be described in detail here. The first clamping components 5 and the second clamping components 6 cooperate to form a coordinated constraint on the upper and lower parts of the workpiece.
[0035] As attached Figure 2As shown, further, both sides of the electroplating frame 3 are provided with adjusting sleeves 31. The inner wall of the adjusting sleeve 31 is provided with protrusions (not shown). The side frame of the electroplating frame 3 extends into the adjusting sleeve 31, and the side frame of the electroplating frame 3 is provided with grooves 32 that match the protrusions. The electroplating frame 3 and the adjusting sleeve 31 cooperate through the grooves 32 and the protrusions to adjust the length of the electroplating frame 3 extending into the adjusting sleeve 31, thereby adjusting the height of the rectangular frame structure and improving the versatility of the fixture.
[0036] Furthermore, the bottom of the electroplating frame 3 is provided with multiple load-bearing blocks 33 to enhance the overall stability of the fixture and prevent the frame from shaking due to the weight of the workpiece or the impact of the liquid during the electroplating process.
[0037] In summary, the first clamping component 5 of this application can tension the upper part of the workpiece 4 to be electroplated in the inclined direction and the vertical direction respectively by slidingly engaging with the oblique elongated hole 211 and the vertical elongated hole 212 on the tensioning part 21. Combined with the clamping of the lower part of the workpiece by the second clamping component 6, a cooperative constraint structure of "multi-directional tensioning of the upper part and stable clamping of the lower part" is formed, thereby ensuring that the workpiece 4 to be electroplated is fully unfolded and avoiding workpiece warping.
[0038] Among them, the tension in the inclined direction at both ends can effectively counteract the warping tendency of the workpiece in the left and right direction, and the tension in the vertical direction in the middle can suppress the warping in the up and down direction. This significantly reduces the warping deformation of the product caused by coating stress, residual stress of the substrate, etc., and improves the dimensional accuracy and appearance quality of the product.
[0039] The above are merely specific application examples of this utility model and do not constitute any limitation on the scope of protection of this utility model; all technical solutions formed by equivalent transformation or equivalent substitution fall within the scope of protection of this utility model.
Claims
1. A clamp for electroplating that prevents warping, characterized in that: Include Mounting bracket (1); The tensioning bracket (2) is horizontally arranged at the bottom of the mounting bracket (1), and multiple tensioning parts (21) are spaced apart on the top of the tensioning bracket (2). The tensioning parts (21) at both ends of the tensioning bracket (2) are provided with oblique elongated holes (211), the upper side of the oblique elongated holes (211) facing the end of the tensioning bracket (2), and the oblique elongated holes (211) on the tensioning parts (21) at both ends of the tensioning bracket (2) are symmetrically arranged. The tensioning parts (21) in the middle of the tensioning bracket (2) are provided with vertical elongated holes (212). An electroplating frame (3) is set on the lower side of the tensioning bracket (2) and forms a rectangular frame structure with the tensioning bracket (2). The rectangular frame structure is used to place the workpiece (4) to be electroplated. The first clamping assembly (5) is provided in multiple ways, and each of them is used to clamp the upper part of the workpiece (4) to be electroplated; the multiple first clamping assemblies (5) are sequentially installed on the tensioning part (21) of the tensioning bracket (2) and slide in cooperation with the oblique elongated hole (211) or vertical elongated hole (212) on the tensioning part (21) to tension the upper part of the workpiece (4) to be electroplated in the vertical or oblique direction; The second clamping assembly (6) is provided in multiple ways. Multiple second clamping assemblies (6) are spaced apart at the bottom of the electroplating frame (3) and are all used to clamp the lower part of the workpiece (4) to be electroplated.
2. The anti-warping electroplating fixture according to claim 1, characterized in that: The first clamping assembly (5) includes a mounting plate (51), a first chuck (52), a second chuck (53), and a drive handle (54); the mounting plate (51) is connected to the tensioning part (21) of the tensioning bracket (2) and slides in cooperation with the oblique elongated hole (211) or the vertical elongated hole (212) on the tensioning part (21); the first chuck (52) is located at the bottom of the mounting plate (51); the second chuck (53) is located on the opposite side of the first chuck (52); the drive handle (54) is used to drive the second chuck (53) to clamp the first chuck (52) together; the second clamping assembly (6) is the same as the first clamping assembly (5).
3. The anti-warping electroplating fixture according to claim 1, characterized in that: The tensioning part (21) is integrally formed on the tensioning bracket (2).
4. The anti-warping electroplating fixture according to claim 1, characterized in that: The tensioning bracket (2) has four tensioning parts (21). Two tensioning parts (21) located at both ends of the tensioning bracket (2) have oblique elongated holes (211), and two tensioning parts (21) located in the middle of the tensioning bracket (2) have vertical elongated holes (212). The number of the first clamping components (5) is the same as the number of tensioning parts (21).
5. The anti-warping electroplating fixture according to claim 1, characterized in that: The electroplating frame (3) is U-shaped, and the upper ends of both sides of the electroplating frame (3) are fixed to the two ends of the tensioning bracket (2) respectively by connectors (7).
6. The anti-warping electroplating fixture according to claim 5, characterized in that: The electroplating frame (3) is provided with adjusting sleeves (31) on both sides. The inner wall of the adjusting sleeve (31) is provided with protrusions. The side frame of the electroplating frame (3) extends into the adjusting sleeve (31), and the side frame of the electroplating frame (3) is provided with grooves (32) that match the protrusions. The electroplating frame (3) and the adjusting sleeve (31) cooperate through the grooves (32) and the protrusions.
7. The anti-warping electroplating fixture according to claim 6, characterized in that: The bottom of the electroplating frame (3) is provided with multiple load-bearing blocks (33).