Upper and lower clamping hanging tool for rectangular workpiece

By designing a top and bottom clamping fixture for rectangular workpieces, and adopting a main frame and clamping rod and hook structure, the problem of insufficient stability of traditional fixtures is solved, and stable clamping of workpieces is achieved during the electroplating process, thereby improving the electroplating effect and product quality.

CN224258839UActive Publication Date: 2026-05-19SHANGHAI JIANLI ELECTROPLATING CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANGHAI JIANLI ELECTROPLATING CO LTD
Filing Date
2025-06-26
Publication Date
2026-05-19

AI Technical Summary

Technical Problem

Traditional rectangular workpiece electroplating fixtures are difficult to hold the workpieces to be plated stably and securely, causing them to shake or fall off during the electroplating process, which affects the electroplating effect and product quality.

Method used

Design a top and bottom clamping fixture for rectangular workpieces, which adopts a main frame, clamping rod and clamping hook structure. The clamping rod is elastic, the clamping hook can clamp the workpiece from both sides, and the stability is improved by clamping mechanism and anti-disengagement block.

Benefits of technology

It effectively prevents workpieces from shaking or falling off, improves the uniformity of electroplating effect and product quality, enhances corrosion resistance, wear resistance and conductivity, and extends service life.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the field of workpiece machining auxiliary tools, in particular to an up-down clamping hanging tool for a rectangular workpiece, which comprises a main frame, a clamping space for clamping a to-be-electroplated workpiece is defined on the main frame, clamping rods are arranged on the main frame in pairs, and the two clamping rods are respectively positioned on two opposite sides of the clamping space; the middle of any clamping rod is fixedly arranged on the main frame, the clamping rods are elastic, clamping hooks are arranged at the two ends of each clamping rod, and an opening of each clamping hook faces the side away from the limiting space. The rectangular workpiece to be electroplated can be stably and firmly clamped through the clamping hooks, the situation that the rectangular workpiece shakes or falls off due to the factors such as solution flowing and electrode reaction in the electroplating process is avoided, the rectangular workpiece is kept stable during electroplating, the uniformity of the electroplating effect and the product quality are improved, the workpiece is prevented from being damaged, and the production efficiency is improved.
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Description

Technical Field

[0001] This application relates to the field of auxiliary tools for workpiece processing, and in particular to an upper and lower clamping fixture for rectangular workpieces. Background Technology

[0002] Electroplating technology, as one of the key technologies in the field of surface treatment, occupies an important position in today's industrial development. In recent years, with the continuous progress of manufacturing, electroplating technology has made significant progress. It is widely used in many industrial fields, covering automobile manufacturing, electronic equipment production, and aerospace. Through electroplating, the physicochemical properties of metallic or non-metallic materials, such as corrosion resistance, wear resistance, and electrical conductivity, can be effectively improved, while also enhancing the aesthetics of products to meet the diverse appearance requirements of consumers. For rectangular workpieces, the surface performance is significantly improved after electroplating, enabling them to better adapt to various complex working environments and further extending their service life, thus providing strong support for the development of related industries.

[0003] In traditional electroplating processes, when specifically electroplating rectangular workpieces, various types of hangers are commonly used to accurately place the workpiece in the plating solution and ensure its stability. Among these, hook-type hangers are the most common, relying on hooks to suspend the rectangular workpiece; clamp-type hangers also exist, using clamping force to secure the workpiece. These hangers play a crucial role in the electroplating operation, ensuring the basic stability of the rectangular workpiece during the plating process, allowing for smooth electroplating.

[0004] However, traditional electroplating racks designed for rectangular workpieces have a significant drawback: they are difficult to stably and securely hold the rectangular workpieces to be plated. During the electroplating process, due to factors such as solution flow and electrode reactions, rectangular workpieces are prone to shaking or even falling off, resulting in uneven electroplating effects, reduced product quality, and potentially even damage to the rectangular workpieces and a decrease in production efficiency. Utility Model Content

[0005] To address the problem of fixing rectangular workpieces in the prior art, this application provides an upper and lower clamping fixture for rectangular workpieces.

[0006] This application provides a top and bottom clamping fixture for rectangular workpieces, employing the following technical solution:

[0007] A rectangular workpiece clamping fixture includes a main frame with a clamping space formed on the main frame for clamping electroplated workpieces. A pair of clamping rods are arranged on the main frame, with the two clamping rods located on opposite sides of the clamping space. The middle part of any one clamping rod is fixedly mounted on the main frame and the clamping rod is elastic. Both ends of the clamping rod are provided with clamping hooks, and the opening of any one clamping hook faces away from the limiting space.

[0008] By adopting the above technical solution, the snap-fit ​​hook can be used to stably and firmly hold the rectangular workpiece to be electroplated, preventing the rectangular workpiece from shaking or falling off during the electroplating process due to factors such as solution flow and electrode reaction. This keeps the rectangular workpiece stable during electroplating, improves the uniformity of the electroplating effect and product quality, avoids workpiece damage and improves production efficiency. It can also improve the physical and chemical properties of the rectangular workpiece, such as corrosion resistance, wear resistance and conductivity, enhance its aesthetics, make it better adaptable to complex working environments, and extend its service life.

[0009] Preferably, the main frame is provided with a clamping mechanism for fixing the hanger. The clamping mechanism includes a clamping plate fixedly mounted on the main frame. The end of the clamping plate away from the main frame is bent to form a clamping groove, and the opening of the clamping groove faces the main frame.

[0010] By adopting the above technical solution, the clamping mechanism set on the main frame can easily fix the hanger in a suitable position by bending the clamping plate to form a clamping groove, which facilitates electroplating operation.

[0011] Preferably, the clamping groove is provided with an abutment plate, one end of the abutment plate is provided at the opening of the clamping groove, and the clamping groove is also provided with an abutment bolt, which is threadedly connected to the clamping groove and forms a rotatable connection with the abutment plate.

[0012] By adopting the above technical solution, the main frame is enclosed to form a snap-fit ​​space to hold the electroplated workpiece. The snap-fit ​​hooks of the snap-fit ​​rod can snap the workpiece from opposite sides. The abutment plate is set at the opening of the clamping groove. The position of the abutment plate can be adjusted by turning the abutment bolt, so that the hanger is more firmly fixed in the required position, ensuring the stability of the workpiece to be electroplated during the electroplating process, and improving the electroplating effect and product quality.

[0013] Preferably, the bent portion of the snap hook is provided with an outwardly extending anti-detachment block, the extension direction of which is perpendicular to the opening direction of the snap hook.

[0014] By adopting the above technical solution, the main frame encloses a snap-fit ​​space for receiving electroplated workpieces. Pairs of elastic snap-fit ​​rods are located on opposite sides of the snap-fit ​​space, and snap-fit ​​hooks are provided at both ends of the snap-fit ​​rods to stably hold the rectangular workpieces. Anti-detachment blocks are provided at the bends of the snap-fit ​​hooks, extending outwards with the extension direction perpendicular to the opening direction of the snap-fit ​​hooks. This prevents the rectangular workpieces from coming out of the snap-fit ​​hooks, making the rectangular workpieces more stable during the electroplating process, avoiding uneven electroplating results due to shaking or falling off, improving product quality, reducing damage to rectangular workpieces, and increasing production efficiency. After electroplating, the surface performance of the rectangular workpieces is improved, making them better adaptable to complex working environments and extending their service life.

[0015] Preferably, the inner surface of the snap hook is provided with anti-slip texture.

[0016] By adopting the above technical solution, the inner surface of the snap hook is provided with anti-slip texture, which can further increase the friction between the snap hook and the rectangular workpiece, and more firmly snap the rectangular workpiece. This avoids the rectangular workpiece from shaking or even falling off due to factors such as solution flow and electrode reaction during the electroplating process, improves the uniformity of electroplating effect and product quality, reduces damage to rectangular workpieces, increases production efficiency, and improves the surface performance and service life of rectangular workpieces.

[0017] Preferably, a sliding strip is fixedly provided on the side of the main frame, the width of the sliding strip on the side away from the main frame is greater than the width on the side closer to the main frame, and a sliding groove is provided in the middle of the snap-fit ​​rod, the sliding groove being sleeved on the sliding strip.

[0018] By adopting the above technical solution, a sliding strip is provided on the side of the main frame, and a sliding groove is provided in the middle of the locking rod and it is sleeved on the sliding strip. This allows the locking rod to slide along the sliding strip, making it easy to adjust the position of the locking rod to accommodate workpieces of different sizes to be electroplated. The width of the sliding strip on the side away from the main frame is greater than the width on the side closer to the main frame, which can prevent the locking rod from falling off the sliding strip and ensure the stability of the locking rod during the sliding process. This, in turn, allows for a more stable and secure clamping of the workpiece to be electroplated, preventing the workpiece from shaking or falling off during the electroplating process, resulting in a more uniform electroplating effect and improving product quality and production efficiency.

[0019] Preferably, a threaded bolt is also provided on the sliding groove, and the bolt and the sliding strip form an abutting fit.

[0020] By adopting the above technical solution, the main frame forms a snap-fit ​​space, and the snap-fit ​​rod with elastic snap-fit ​​hooks at both ends can stably snap-fit ​​the electroplating workpiece. The main frame is equipped with a sliding strip on the side, and the snap-fit ​​rod is equipped with a sliding groove in the middle of the sliding strip, so that the position of the snap-fit ​​rod can be adjusted. Furthermore, by inserting a tightening bolt through the sliding groove and abutting with the sliding strip, the position of the snap-fit ​​rod can be fixed, which can further improve the stability of the snap-fit ​​rod and prevent the snap-fit ​​rod from sliding at will. This makes the snap-fit ​​rod more stable and firm in snapping the electroplating workpiece, preventing the workpiece from shaking or falling off during the electroplating process, ensuring uniform electroplating effect, and improving product quality and production efficiency.

[0021] Preferably, the main frame is also provided with reinforcing ribs.

[0022] By adopting the above technical solutions, the main frame is reinforced with ribs to enhance its structural strength, thereby further improving the overall stability and durability of the hanger.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The main frame's snap-fit ​​space and flexible snap-fit ​​rods and hooks can stably and firmly hold the rectangular workpiece to be electroplated, preventing it from shaking or falling off during the electroplating process.

[0025] 2. Prevents rectangular workpieces from shaking or falling off, resulting in a more uniform electroplating effect and improved product quality;

[0026] 3. Avoiding damage to rectangular workpieces helps ensure normal production and improves production efficiency. Attached Figure Description

[0027] Figure 1 This is an isometric schematic diagram of the main overall structure in the embodiments of this application;

[0028] Figure 2 This is a schematic diagram of the snap-fit ​​rod in an embodiment of this application.

[0029] Reference numerals: 1. Main frame; 2. Snap-fit ​​rod; 3. Clamping mechanism; 31. Clamping plate; 32. Clamping groove; 33. Abutment plate; 34. Abutment bolt; 4. Sliding strip; 5. Snap-fit ​​space; 6. Sliding groove; 7. Tightening bolt; 8. Snap-fit ​​hook; 9. Anti-disengagement block; 10. Anti-slip texture; 11. Reinforcing rib. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail.

[0031] This application discloses an upper and lower clamping fixture for rectangular workpieces.

[0032] Reference Figure 1 and Figure 2 A rectangular workpiece clamping fixture includes a main frame 1, clamping rods 2, a clamping mechanism 3, and a sliding bar 4. The main frame 1 forms a clamping space 5. The clamping rods 2 are arranged in pairs on the main frame 1 and located on opposite sides of the clamping space 5. The clamping mechanism 3 is set on the main frame 1 to fix the fixture. The sliding bar 4 is set on the side of the main frame 1 and cooperates with the clamping rods 2 to achieve a stable and firm clamping of the rectangular workpiece to be plated, which facilitates the fixation of the fixture. The clamping mechanism 3 ensures the stability of the fixture on the electroplating equipment.

[0033] Reference Figure 1 and Figure 2 The snap-fit ​​space 5 is a dedicated area for placing the rectangular workpiece to be plated, with each pair of snap-fit ​​rods 2 located on opposite sides of the snap-fit ​​space 5. The snap-fit ​​rods 2 are made of a flexible metal material, such as spring steel, which has good elastic recovery capabilities and can generate appropriate elastic force when holding the rectangular workpiece.

[0034] Reference Figure 1 and Figure 2 The locking rod 2 has a U-shaped sliding groove 6 in its middle, with a smooth inner wall to reduce friction with the sliding strip 4. The sliding strip 4 is fixedly mounted on the side of the main frame 1, with a wider width on the side away from the main frame 1 than on the side closer to the main frame 1, forming a trapezoidal structure. This design prevents the locking rod 2 from slipping off the sliding strip 4. The locking rod 2 is fitted onto the sliding strip 4 through the sliding groove 6, and a threaded bolt 7 is threaded through the sliding groove 6, forming an abutment fit with the sliding strip 4. When the bolt 7 is tightened, it presses firmly against the sliding strip 4, thus fixing the position of the locking rod 2 on the sliding strip 4. The locking rod 2 slides along the sliding strip 4, allowing for easy adjustment of its position to accommodate workpieces of different sizes to be electroplated.

[0035] Reference Figure 1 and Figure 2 Each of the two ends of the latching rod 2 is provided with a latching hook 8, which is generally made by forging and integrally formed with the latching rod 2. The opening direction of the latching hook 8 is horizontal and parallel to the length direction of the sliding bar 4. On one side of the main frame 1, the bent part of the latching hook 8 is provided with an outwardly extending anti-detachment block 9. The anti-detachment block 9 is usually integrally formed with the latching hook 8 by stamping. The extension direction of the anti-detachment block 9 is perpendicular to the opening direction of the latching hook 8. The anti-detachment block 9 can prevent the rectangular workpiece from coming out of the latching hook 8 during the electroplating process.

[0036] Reference Figure 1 and Figure 2The inner surface of the snap hook 8 is provided with anti-slip texture 10, which can be a cross grid or stripe. It is processed on the inner surface of the snap hook 8 by etching process, which increases the friction between the snap hook 8 and the rectangular workpiece and further improves the stability of snap holding.

[0037] Reference Figure 1 and Figure 2 The clamping mechanism 3 includes a clamping plate 31 fixedly mounted on the main frame 1. The clamping plate 31 is generally made of metal plate through a bending process. The end of the clamping plate 31 away from the main frame 1 is bent to form a clamping groove 32, and the opening of the clamping groove 32 faces the main frame 1. An abutment plate 33 is provided in the clamping groove 32, and one end of the abutment plate 33 is rotatably mounted at the opening of the clamping groove 32. An abutment bolt 34 is also provided on the clamping groove 32, and the abutment bolt 34 is threadedly connected to the clamping groove 32 and forms a rotatable connection with the abutment plate 33. When the abutment bolt 34 is rotated, the abutment bolt 34 will push the abutment plate 33 to rotate, thereby achieving clamping and fixing with other objects. The main frame 1 is also provided with reinforcing ribs 11.

[0038] The implementation principle of this embodiment is as follows: The fixture, through the combination of a main frame 1, a locking rod 2, and a locking hook 8, can stably and firmly hold the rectangular workpiece to be plated. The elasticity of the locking rod 2 and the special design of the locking hook 8 prevent the rectangular workpiece from shaking or falling off during electroplating, ensuring the uniformity of the electroplating effect. Simultaneously, the clamping mechanism 3 facilitates the fixing of the fixture on the electroplating equipment, improving operational convenience. The reinforcing rib 11 enhances the structural strength of the main frame 1 and extends the service life of the fixture. The overall design of the fixture effectively solves the problem of traditional electroplating fixtures being unable to stably hold rectangular workpieces, improving product quality and production efficiency, and has significant advantages compared to traditional fixtures.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A top and bottom clamping fixture for rectangular workpieces, characterized in that: The device includes a main frame (1), which has a clamping space (5) for clamping electroplated workpieces. A pair of clamping rods (2) are provided on the main frame (1), with the two clamping rods (2) located on opposite sides of the clamping space (5). The middle part of any clamping rod (2) is fixedly set on the main frame (1) and the clamping rod (2) is elastic. Both ends of the clamping rod (2) are provided with clamping hooks (8), and the opening of any clamping hook (8) faces away from the limiting space.

2. The upper and lower clamping fixture for a rectangular workpiece according to claim 1, characterized in that: The main frame (1) is provided with a clamping mechanism (3) for fixing the hanger. The clamping mechanism (3) includes a clamping plate (31) fixedly installed on the main frame (1). The end of the clamping plate (31) away from the main frame (1) is bent to form a clamping groove (32). The opening of the clamping groove (32) faces the main frame (1).

3. The upper and lower clamping fixture for a rectangular workpiece according to claim 2, characterized in that: The clamping groove (32) is provided with an abutment plate (33), one end of which is located at the opening of the clamping groove (32). An abutment bolt (34) is also provided on the clamping groove (32), and the abutment bolt (34) is threadedly connected to the clamping groove (32) and forms a rotatable connection with the abutment plate (33).

4. The upper and lower clamping fixture for a rectangular workpiece according to claim 1, characterized in that: The bend of the snap hook (8) is provided with an outwardly extending anti-detachment block (9), and the extension direction of the anti-detachment block (9) is perpendicular to the opening direction of the snap hook (8).

5. The upper and lower clamping fixture for a rectangular workpiece according to claim 1, characterized in that: The inner surface of the snap hook (8) is provided with anti-slip texture (10).

6. The upper and lower clamping fixture for a rectangular workpiece according to claim 1, characterized in that: A sliding strip (4) is fixedly provided on the side of the main frame (1). The width of the sliding strip (4) on the side away from the main frame (1) is greater than the width on the side close to the main frame (1). A sliding groove (6) is provided in the middle of the snap-fit ​​rod (2). The sliding groove (6) is sleeved on the sliding strip (4).

7. A rectangular workpiece upper and lower clamping fixture according to claim 6, characterized in that: The sliding groove (6) is also threaded with a tightening bolt (7), and the tightening bolt (7) and the sliding strip (4) form an abutting fit.

8. The upper and lower clamping fixture for a rectangular workpiece according to claim 1, characterized in that: The main frame (1) is also provided with reinforcing ribs (11).