Electroplating fixtures for thin-walled parts

Abstract

This utility model provides an electroplating fixture for thin-walled parts, belonging to the field of electroplating fixture technology. The fixture includes a hanging frame, hanging branches, and a pressing jig. The hanging frame consists of an outer frame and a hanging head, with the hanging head fixed to the top of the outer frame and reinforced for stability by a connecting rod. The hanging branches are rectangular frames composed of two short rods and two long rods. The long rods have stops and U-shaped plates, with the bent and pressing plates of the U-shaped plates used to match the pressing jig. The pressing jig includes a base and a cover plate. The base has positioning posts and support posts, and the cover plate engages with the positioning posts through positioning holes and is fixed to the base through positioning seats. Multiple hanging branches are installed vertically and alternately within the hanging frame, and the two ends of the pressing jig are mounted on the U-shaped plates of the hanging branches, enabling stable clamping of thin-walled parts. This fixture effectively ensures the flatness of thin-walled parts while meeting the conductivity requirements of electroplating, and offers quick clamping, making it suitable for electroplating, electroless plating, anodizing, and other processes.

Description

Technical Field

[0001] This utility model relates to the field of electroplating tooling technology, specifically to an electroplating tooling for thin-walled parts. Background Technology

[0002] With the rapid development of industries such as consumer electronics and precision instruments, products are continuously evolving towards thinner and smaller designs. The application of thin-walled, irregularly shaped structural parts (typically less than 0.5mm thick) is becoming increasingly widespread. These parts have extremely stringent requirements for flatness and surface quality after electroplating. However, existing electroplating clamping technologies for thin-walled parts have significant bottlenecks: the clamping or support-type tooling commonly used in the industry tends to apply uneven external forces to thin-walled parts during clamping, causing irreversible deformation and severely affecting flatness. In actual production, the flatness pass rate is often below 70%, making it difficult to meet the assembly requirements of high-precision products. Furthermore, the clamping process of traditional tooling is cumbersome, relying heavily on manual fixation, with clamping efficiency typically below 5 pieces / minute, hindering the pace of mass production. Furthermore, existing tooling has poor versatility, with most designs tailored to specific workpiece sizes or structures. Changing workpieces necessitates readjusting or replacing the tooling, increasing production costs and extending preparation time. Additionally, some tooling uses limited material options, making it susceptible to corrosion and poor conductivity in different process environments such as electroplating, electroless plating, and anodizing, further impacting electroplating quality and tooling lifespan. These issues collectively make it difficult to balance production efficiency and product quality in the electroplating process for thin-walled parts, becoming a pressing technical challenge for the industry. Utility Model Content

[0003] In view of the above-mentioned technical deficiencies, the purpose of this utility model is to provide an electroplating fixture for thin-walled parts, which can effectively ensure the flatness of thin-walled parts while meeting the conductivity requirements of electroplating.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] An electroplating fixture for a thin-walled part includes:

[0006] The hanging frame includes an outer frame and a hanging head, with the hanging head fixed to the top of the outer frame;

[0007] Multiple hanging branches are configured and installed inside the outer frame; the multiple hanging branches are arranged vertically at intervals inside the outer frame; each hanging branch includes two short rods and two long rods; the two short rods are arranged parallel and spaced apart, and the two long rods are positioned between the two short rods; one end of the long rod is perpendicularly and fixedly connected to one end of one of the short rods, and the other end of the long rod is perpendicularly and fixedly connected to one end of the other short rod; multiple stops are fixedly installed on the upper surface of the long rod, and the multiple stops are arranged parallel and spaced along the length of the long rod; a U-shaped piece is set between two adjacent stops, one end of the U-shaped piece is fixed to one of the stops, and the other end is fixed to the other stop, and a bending pressure plate is integrally provided on one end of the U-shaped piece;

[0008] The pressing fixture has two ends mounted on U-shaped pieces corresponding to two long rods respectively. The pressing fixture includes a base and a cover plate. The base is fixedly equipped with a positioning post and a support post. The length of the positioning post is greater than the length of the support post. The cover plate is provided with positioning holes that are adapted to the positioning posts. The positioning posts are inserted into the positioning holes, and one end of the support post abuts against the cover plate.

[0009] Preferably, the hanging frame has two hanging heads; the two hanging heads are symmetrically arranged on the top of the outer frame.

[0010] Preferably, the hanging frame further includes a connecting rod; the lower end of the connecting rod is fixed to the outer frame, and the upper end is fixed to the hanging head.

[0011] Preferably, the hanging head includes a vertical plate, a hook, a threaded sleeve, a bolt, and a spring; the vertical plate is fixed to the outer frame; the hook is fixed to the top of the vertical plate; the spring is placed between the vertical plate and the hook, and the lower end of the spring is fixed to the hook; the distance between the spring and the vertical plate gradually increases from bottom to top; the threaded sleeve is fixed to the end of the vertical plate away from the hook, and the vertical plate is provided with a threaded hole corresponding to the threaded sleeve, and the bolt is installed in the threaded sleeve; the extension line of the bolt's axis is perpendicular to the vertical plate.

[0012] Preferably, a guide assembly is fixedly provided on the outer frame; the guide assembly includes an upper guide plate, a lower guide plate, and a pressure plate; one side of the upper guide plate and the lower guide plate is fixed on the inner side of the outer frame; the upper guide plate and the lower guide plate are arranged parallel to each other vertically, with the upper guide plate located above the lower guide plate, and the short rod is slidably arranged between the upper guide plate and the lower guide plate; the pressure plate is fixed on the upper part of the upper guide plate; a U-shaped pressure head is fixedly provided at the end of the pressure plate, and an opening corresponding to the U-shaped pressure head is provided on the upper guide plate, with the U-shaped pressure head passing through the opening and abutting against the upper end face of the short rod.

[0013] Preferably, the upper guide plate has an integrally formed upper curved plate at its end, and the lower guide plate has an integrally formed lower curved plate at its end. The distance between the upper guide plate and the lower guide plate gradually increases from the end closer to the upper guide plate to the end farther away from the upper guide plate.

[0014] Preferably, the pressing fixture further includes a positioning seat; a slot is provided at one end of the positioning post away from the base; the positioning seat is placed on the end of the cover plate away from the base; a guide strip is fixedly provided on the cover plate, and a guide hole corresponding to the guide strip is provided on the positioning seat, the guide strip being slidably disposed in the guide hole; a positioning groove adapted to the slot is provided on the positioning seat, and the positioning seat is engaged in the slot of the positioning post through the positioning groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] By coordinating the support columns of the pressing fixture with the clamping points of the cover plate, the support points are designed to maintain the workpiece level. At the same time, the pressing height of the cover plate is controlled by the positioning seat, which reduces the workpiece deformation caused by traditional clamping fixtures and significantly improves the flatness qualification rate.

[0017] The pressing fixture quickly limits the position through the buckle and the positioning column slot, and inserts the U-shaped piece of the hanging branch through the pin structure. The hanging branch and the hanging frame, and the hanging frame and the flying target are all connected by quick connection method of spring clip buckle or screw lock, which solves the problem of low clamping efficiency of traditional tooling and improves the convenience of clamping.

[0018] The hanging frame adopts a double hanging head design and is reinforced with connecting rods. The connection between the hanging branch and the hanging frame, and between the pressing fixture and the hanging branch, is achieved through an adaptive structure to achieve stable fixation. The tooling material can be stainless steel, titanium alloy, etc., and it is suitable for multiple industries such as electroplating, chemical plating, and anodizing. The support points can be changed according to the workpiece size to adapt to the processing needs of different thin-walled parts.

[0019] A single hanging frame can assemble multiple layers of hanging branches, and each layer of hanging branches can load multiple pressing fixtures, significantly increasing the total loading capacity. The structural design is also adapted to automated loading and unloading, facilitating mass production. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 3 for Figure 1 A magnified view of a section at point B in the middle;

[0023] Figure 4 This is a schematic diagram of the installation of the pressing fixture and the hanging branch in this utility model;

[0024] Figure 5 for Figure 4 A magnified view of a section at point C;

[0025] Figure 6This is a schematic diagram of the pressing fixture in this utility model.

[0026] in:

[0027] 1. Vertical plate; 2. Pressing fixture; 3. Outer frame; 4. Hanging branch; 5. Bolt; 6. Screw sleeve; 7. Hook; 8. Spring; 9. Lower bending plate; 10. Upper bending plate; 11. Pressure plate; 12. Upper guide plate; 13. U-shaped pressure head; 14. Lower guide plate; 15. Opening; 16. Short bar; 17. Stop block; 18. U-shaped piece; 19. Long bar; 20. Bending pressure piece; 21. Positioning groove; 22. Card slot; 23. Base; 24. Support column; 25. Cover plate; 26. Positioning column; 27. Guide hole; 28. Guide strip; 29. ​​Positioning seat. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings.

[0029] like Figures 1 to 6 As shown, an electroplating fixture for a thin-walled part includes:

[0030] The hanging frame includes an outer frame 3 and a hanging head, with the hanging head fixed to the top of the outer frame 3;

[0031] Multiple hanging branches 4 are installed inside the outer frame 3. The multiple hanging branches 4 are arranged vertically at intervals inside the outer frame 3. Each hanging branch 4 includes two short rods 16 and two long rods 19. The two short rods 16 are arranged in parallel at intervals, and the two long rods 19 are arranged in parallel at intervals, with the two long rods 19 positioned between the two short rods 16. One end of the long rod 19 is vertically and fixedly connected to one end of one of the short rods 16, and the other end of the long rod 19 is vertically and fixedly connected to one end of the other short rod 16. Multiple stops 17 are fixedly arranged on the upper surface of the long rod 19, and the multiple stops 17 are arranged in parallel at intervals along the length of the long rod 19. A U-shaped piece 18 is arranged between two adjacent stops 17, with one end of the U-shaped piece 18 fixed to one of the stops 17 and the other end fixed to the other stop 17. A bending pressure plate 20 is integrally provided on one end of the U-shaped piece 18.

[0032] The pressing fixture 2 is mounted on the U-shaped pieces 18 corresponding to the two long rods 19 at both ends. The pressing fixture 2 includes a base 23 and a cover plate 25. The base 23 is fixedly provided with a positioning post 26 and a support post 24. The length of the positioning post 26 is greater than the length of the support post 24. The cover plate 25 is provided with a positioning hole that matches the positioning post 26. The positioning post 26 is inserted into the positioning hole, and one end of the support post 24 abuts against the cover plate 25.

[0033] Furthermore, the hanging frame has two hanging heads; the two hanging heads are symmetrically arranged on the top of the outer frame 3.

[0034] Furthermore, the hanging frame also includes a connecting rod; the lower end of the connecting rod is fixed to the outer frame 3, and the upper end is fixed to the hanging head.

[0035] Furthermore, the hanging head includes a vertical plate 1, a hook 7, a threaded sleeve 6, a bolt 5, and a spring piece 8; the vertical plate 1 is fixed to the outer frame 3; the hook 7 is fixed to the top of the vertical plate 1; the spring piece 8 is placed between the vertical plate 1 and the hook 7, and the lower end of the spring piece 8 is fixed to the hook 7; the distance between the spring piece 8 and the vertical plate 1 gradually increases from bottom to top; the threaded sleeve 6 is fixed to the end of the vertical plate 1 away from the hook 7, and the vertical plate 1 is provided with a threaded hole corresponding to the threaded sleeve 6, and the bolt 5 is installed in the threaded sleeve 6; the extension line of the axis of the bolt 5 is perpendicular to the vertical plate 1.

[0036] Furthermore, a guide assembly is fixedly installed on the outer frame 3; the guide assembly includes an upper guide plate 12, a lower guide plate 14, and a pressure plate 11; one side of the upper guide plate 12 and the lower guide plate 14 is fixed on the inner side of the outer frame 3; the upper guide plate 12 and the lower guide plate 14 are arranged parallel to each other vertically, with the upper guide plate 12 located above the lower guide plate 14, and the short rod 16 is slidably arranged between the upper guide plate 12 and the lower guide plate 14; the pressure plate 11 is fixed on the upper part of the upper guide plate 12; a U-shaped pressure head 13 is fixedly installed at the end of the pressure plate 11, and an opening 15 corresponding to the U-shaped pressure head 13 is provided on the upper guide plate 12, with the U-shaped pressure head 13 passing through the opening 15 and abutting against the upper end face of the short rod 16.

[0037] Furthermore, an upper curved plate 10 is integrally provided at the end of the upper guide plate 12, and a lower curved plate 9 is integrally provided at the end of the lower guide plate 14. The distance between the upper guide plate 12 and the lower guide plate 14 gradually increases from the end closer to the upper guide plate 12 to the end farther away from the upper guide plate 12.

[0038] Furthermore, the pressing fixture 2 also includes a positioning seat 29; a slot 22 is provided at the end of the positioning post 26 away from the base 23; the positioning seat 29 is placed on the end of the cover plate 25 away from the base 23; a guide strip 28 is fixedly provided on the cover plate 25, and a guide hole 27 corresponding to the guide strip 28 is provided on the positioning seat 29, and the guide strip 28 is slidably disposed in the guide hole 27; a positioning groove 21 adapted to the slot 22 is provided on the positioning seat 29, and the positioning seat 29 is engaged in the slot 22 of the positioning post 26 through the positioning groove 21, thereby fixing the cover plate 25 to the base 23 and clamping the workpiece between the cover plate 25 and the base 23.

[0039] Example 1: Electroplating fixture for thin-walled parts in aluminum anodizing

[0040] Application scenario: Suitable for anodizing of thin-walled irregular aluminum parts (such as the inner lining of mobile phone frames) with a thickness of 0.3mm, requiring flatness ≤0.05mm and clamping efficiency ≥8 pieces / minute.

[0041] 1. Parameters and materials of each component

[0042] Hanging frame:

[0043] Outer frame 3: Made of titanium alloy TA2 welded and formed, with dimensions of 600mm×400mm×50mm (length×width×height), and the thickness of the outer frame 3 is 8mm;

[0044] Hanging head: Double hanging heads are symmetrically arranged on the top of the outer frame 3 (300mm apart). Each hanging head consists of a vertical plate 1 (200mm×50mm×5mm), a hook 7 (U-shaped, opening 15 width 30mm, plate thickness 3mm), a spring 8 (titanium alloy TA2, thickness 1mm, the distance between the spring and the vertical plate 1 increases from 2mm to 5mm from bottom to top), a screw sleeve 6 (M8, stainless steel) and a bolt 5 (M8×30mm).

[0045] Connecting rods: 4 rods, made of titanium alloy TA2, 8mm in diameter, with both ends welded and fixed to the hanger and outer frame 3 respectively to enhance stability.

[0046] Hanging branch 4:

[0047] Long bar 19: 2 pieces of titanium alloy TA2, with dimensions of 400mm×15mm×10mm (length×width×height); Short bar 16: 2 pieces of titanium alloy TA2, with dimensions of 100mm×15mm×10mm, welded perpendicularly to long bar 19 to form a rectangular frame.

[0048] Stop 17: 16 stops (32 in total) are set on each long bar 19 at 30mm intervals, with a size of 10mm×10mm×5mm, and are fixed by welding;

[0049] U-shaped piece 18: Located between adjacent stops 17, made of titanium alloy TA2, 1mm thick, with an opening 15 15mm wide, and a bent pressing piece 20 (10mm long, 90° bending angle) that matches the hollow structure of the cover plate 25 of the pressing fixture 2.

[0050] Pressing fixture 2:

[0051] Base 23: Titanium alloy TA2, size 80mm×60mm×10mm, with positioning post 26 (cylinder, diameter 8mm, height 20mm, upper part groove depth 5mm) and support post 24 (round head, diameter 5mm, height 15mm, 6 support points according to the workpiece structure, fastened by M3 screws);

[0052] Cover plate 25: Titanium alloy TA2, the size matches the base 23, and there are 6 round-headed clamping points (non-metallic material, PEEK, diameter 3mm) at the position of the support column 24. The cover plate 25 has a hollow structure on both sides (width 15mm) and a guide strip 28 (length 20mm, width 5mm) on the edge.

[0053] Positioning seat 29: made of PEEK material, it slides with guide strip 28 through guide hole 27, positioning groove 21 engages with positioning post 26 slot 22 (depth 3mm), and controls the cover plate 25 to press down to 18mm (clamping force 5N, to ensure no deformation of the workpiece).

[0054] Guiding components:

[0055] The upper guide plate 12 and the lower guide plate 14 (titanium alloy TA2, thickness 5mm) are spaced 12mm apart. The upper guide plate 12 is provided with an upper bending plate 10 (bending angle 30°) at the end, and the lower guide plate 14 is provided with a lower bending plate 9 (bending angle 30°) at the end. The distance between the two increases from 12mm to 15mm from the inside to the outside.

[0056] The pressure plate 11 (thickness 6mm) is fixed to the upper guide plate 12. The U-shaped pressure head 13 (width 10mm) passes through the opening 15 (width 12mm) of the upper guide plate 12 and abuts against the short rod 16 to ensure that the installation deviation of the hanging branch 4 is ≤0.5mm.

[0057] 2. Assembly and Usage Procedure

[0058] 4. Assembly of hanging branches: Weld short rod 16 and long rod 19 into a frame, weld stop block 17 and fix U-shaped piece 18 (bent pressure piece 20 facing outward);

[0059] Hanging frame assembly: The outer frame 3 is welded to the hanging head, 4 connecting rods are welded, and the guide assembly is installed (the upper / lower guide plate 14 is welded to the outer frame 3, and the pressure plate 11 is fixed with screws);

[0060] Installation of hanging branches 4: Slide the short rods 16 of hanging branches 4 into the upper / lower guide plates 14 of the guide assembly, and press and fix them by the U-shaped pressure head 13 (the spacing between each layer of hanging branches 4 is 80mm, and there are 7 layers in total).

[0061] Workpiece clamping: Place the aluminum thin-walled part on the support column 24 of the base 23 of the pressing fixture 2. The cover plate 25 is inserted through the positioning column 26. Push the positioning seat 29 into the slot 22 of the positioning column 26 to complete the fixation.

[0062] Fixture installation: Insert the pressing fixture 2 into the U-shaped piece 18 of the hanging branch 4 through the hollow structure on both sides (the bending pressing piece 20 is used to clamp it) to complete the assembly.

[0063] Results: Flatness pass rate ≥95%, clamping efficiency up to 10 pieces / minute, single hanging frame can load 112 pieces (7 layers × 16).

[0064] Example 2: Electroplating fixture for thin-walled stainless steel parts

[0065] Application scenarios: Suitable for acid nickel plating of thin-walled 304 stainless steel parts with a thickness of 0.4mm (such as precision instrument housings), which need to be resistant to plating solution corrosion and have high requirements for clamping stability.

[0066] 1. Parameters and materials of each component

[0067] Hanging frame:

[0068] Outer frame 3: Welded from 304 stainless steel, dimensions 500mm×350mm×40mm, frame thickness 10mm;

[0069] Hanging head: Double hanging head (250mm spacing), upright plate 1 (180mm×40mm×6mm), hook 7 (U-shaped, opening 15, width 25mm, stainless steel 304), spring piece 8 (stainless steel 304, thickness 1.2mm), threaded sleeve 6 (M10) and bolt 5 (M10×25mm);

[0070] Connecting rods: 3 pieces, stainless steel 304, diameter 10mm, welded and fixed.

[0071] Hanging branch 4:

[0072] Long bar 19: 304 stainless steel, 2 pieces, size 350mm×20mm×12mm; Short bar 16: 2 pieces, size 80mm×20mm×12mm, welded into a frame;

[0073] Stop 17: 12 stops are set on each long bar 19 at 35mm intervals (24 in total), with dimensions of 12mm×12mm×6mm, and are fastened by M4 screws;

[0074] U-shaped sheet 18: Stainless steel 304, thickness 1.5mm, opening 15, width 18mm, bending and pressing sheet 20, length 12mm.

[0075] Pressing fixture 2:

[0076] Base 23: Stainless steel 304, dimensions 70mm×50mm×12mm, positioning post 26 (square post, 10mm×10mm×25mm, groove depth 6mm), support post 24 (needle-shaped, height 18mm, 4 support points, M4 screw fastening);

[0077] Cover plate 25: Stainless steel 304, with 4 metal conductive clamping points (needle-shaped, 2mm in diameter) corresponding to the support column 24, and guide strip 28 (18mm long, 6mm wide).

[0078] Positioning seat 29: Stainless steel 304, positioning groove 21 and positioning post 26 slot 22 (depth 4mm) cooperate, cover plate 25 press down height 22mm (clamping force 8N).

[0079] Guiding components:

[0080] Upper / lower guide plates 14 (stainless steel 304, thickness 6mm), spacing 15mm; upper bending plate 10 and lower bending plate 9 with bending angle of 25°, spacing increasing from 15mm to 18mm from the inside out.

[0081] The pressure plate 11 and U-shaped pressure head 13 (width 12mm) ensure that the installation deviation of the hanging branch 4 is ≤0.8mm.

[0082] 2. Assembly and Usage Procedure

[0083] 4. Assembly of hanging branches: After welding short rod 16 and long rod 19, lock the stop block 17 and fix the U-shaped piece 18;

[0084] Hanging frame assembly: Weld the outer frame 3 to the hanging head, and install the connecting rod and guide assembly;

[0085] Installation of hanging branch 4: After sliding into the guide assembly, it is fixed by U-shaped pressure head 13 (6 layers in total, with a spacing of 70mm between each layer);

[0086] Workpiece clamping: The stainless steel part is placed on the support column 24, and after the cover plate 25 is inserted into the positioning column 26, the positioning seat 29 is clamped.

[0087] Fixture installation: Insert the hanging branch 4U-shaped piece 18, and bend and press the piece 20 to clamp and fix it.

[0088] Results: Flatness pass rate ≥92%, clamping efficiency up to 8 pieces / minute, single hanging frame can load 72 pieces (6 layers × 12 pieces), and corrosion resistance to plating solution ≥6 months.

Claims

1. An electroplating fixture for thin-walled parts, characterized in that, include: The hanging frame includes an outer frame (3) and a hanging head, with the hanging head fixed to the top of the outer frame (3); Multiple hanging branches (4) are installed inside the outer frame (3); the multiple hanging branches (4) are arranged vertically and alternately inside the outer frame (3); each hanging branch (4) includes two short rods (16) and two long rods (19); the two short rods (16) are arranged parallel and spaced apart, and the two long rods (19) are arranged parallel and spaced apart, with the two long rods (19) positioned between the two short rods (16); one end of the long rod (19) is vertically and fixedly connected to one end of one of the short rods (16), and the other end of the long rod (19) is connected to the other short rod. (16) is vertically fixed at one end; multiple blocks (17) are fixedly provided on the upper end surface of the long rod (19), and the multiple blocks (17) are arranged in parallel intervals along the length direction of the long rod (19); a U-shaped piece (18) is provided between two adjacent blocks (17), one end of the U-shaped piece (18) is fixed on one of the blocks (17), and the other end is fixed on the other block (17), and a bending pressure plate (20) is integrally provided on one end of the U-shaped piece (18); The pressing fixture (2) is installed on the U-shaped pieces (18) corresponding to the two long rods (19) at both ends. The pressing fixture (2) includes a base (23) and a cover plate (25). The base (23) is fixedly provided with a positioning post (26) and a support post (24). The length of the positioning post (26) is greater than the length of the support post (24). The cover plate (25) is provided with a positioning hole that matches the positioning post (26). The positioning post (26) is inserted into the positioning hole, and one end of the support post (24) abuts against the cover plate (25).

2. The electroplating fixture for thin-walled parts as described in claim 1, characterized in that, The hanging frame has two hanging heads; the two hanging heads are symmetrically arranged on the top of the outer frame (3).

3. The electroplating fixture for thin-walled parts as described in claim 2, characterized in that, The hanging frame also includes a connecting rod; the lower end of the connecting rod is fixed to the outer frame (3), and the upper end is fixed to the hanging head.

4. The electroplating fixture for thin-walled parts as described in any one of claims 1 to 3, characterized in that, The hanging head includes a vertical plate (1), a hook (7), a screw sleeve (6), a bolt (5), and a spring piece (8); the vertical plate (1) is fixed on the outer frame (3); the hook (7) is fixed on the top of the vertical plate (1); the spring piece (8) is placed between the vertical plate (1) and the hook (7), and the lower end of the spring piece (8) is fixed on the hook (7); the distance between the spring piece (8) and the vertical plate (1) gradually increases from bottom to top; the screw sleeve (6) is fixed on the end of the vertical plate (1) away from the hook (7), and the vertical plate (1) is provided with a screw hole corresponding to the screw sleeve (6), and the bolt (5) is installed in the screw sleeve (6); the extension line of the axis of the bolt (5) is perpendicular to the vertical plate (1).

5. The electroplating fixture for thin-walled parts as described in claim 1, characterized in that, A guide assembly is fixedly installed on the outer frame (3); the guide assembly includes an upper guide plate (12), a lower guide plate (14) and a pressure plate (11); one side of the upper guide plate (12) and the lower guide plate (14) is fixed on the inner side of the outer frame (3); the upper guide plate (12) and the lower guide plate (14) are arranged in parallel intervals, with the upper guide plate (12) located above the lower guide plate (14), and the short rod (16) is slidably arranged between the upper guide plate (12) and the lower guide plate (14); the pressure plate (11) is fixed on the upper part of the upper guide plate (12); a U-shaped pressure head (13) is fixedly installed at the end of the pressure plate (11), and an opening (15) corresponding to the U-shaped pressure head (13) is provided on the upper guide plate (12), and the U-shaped pressure head (13) passes through the opening (15) and abuts against the upper end face of the short rod (16).

6. The electroplating fixture for thin-walled parts as described in claim 5, characterized in that, The upper guide plate (12) is integrally provided with an upper curved plate (10) at its end, and the lower guide plate (14) is integrally provided with a lower curved plate (9) at its end. The distance between the upper guide plate (12) and the lower guide plate (14) gradually increases from the end closer to the upper guide plate (12) to the end farther away from the upper guide plate (12).

7. The electroplating fixture for thin-walled parts as described in claim 1, characterized in that, The pressing fixture (2) also includes a positioning seat (29); a slot (22) is provided at one end of the positioning post (26) away from the base (23); the positioning seat (29) is placed at one end of the cover plate (25) away from the base (23); a guide strip (28) is fixedly provided on the cover plate (25), and a guide hole (27) corresponding to the guide strip (28) is provided on the positioning seat (29), and the guide strip (28) is slidably provided in the guide hole (27); a positioning groove (21) adapted to the slot (22) is provided on the positioning seat (29), and the positioning seat (29) is engaged in the slot (22) of the positioning post (26) through the positioning groove (21).

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