Conductive jig of continuous electroplating production line

Abstract

The utility model discloses a conductive jig of a continuous electroplating production line, which comprises a base and a middle shaft arranged above the base, two groups of conductive rings are arranged up and down, the heights of the two groups of conductive rings can be adjusted according to different products, and pressing wheels in four groups of pressing wheel components on a fixed plate are matched to adjust the height of the conductive rings. The two sides of a product can be pressed on the conducting ring in cooperation with the middle shaft, the distance between the pressing wheels can be adjusted through cooperation of the pressing wheels, the stainless steel support, the spring, the locking nut and the fixing plate, compressed air is conveyed into the installation cavity, the impeller is driven to rotate through compressed air power, and then the middle shaft and the conducting ring are driven to rotate automatically. Therefore, relative static contact is formed between the product and the conducting ring in the continuous production process, the phenomena of sparks, skip plating and the like can be effectively prevented, the resistance formed in the production process is reduced due to the increase of the contact area, the deformation of the product is obviously reduced due to the fact that no pressure of a pressing wheel exists on the product, and meanwhile thin products can be produced.

Description

Technical Field

[0001] This utility model relates to the technical field of continuous electroplating production lines for surface treatment, and more particularly to a conductive fixture for a continuous electroplating production line, suitable for high-precision, high-quality continuous electroplating production lines such as metal lead frames. Background Technology

[0002] Surface treatment is a process that artificially forms a layer on the surface of a substrate material that has different mechanical, physical, and chemical properties from the substrate. The purpose of surface treatment is to meet the product's requirements for corrosion resistance, wear resistance, decoration, or other special functions.

[0003] Electroplating is a major surface treatment method. To improve productivity, continuous electroplating production lines are the most important equipment in the electroplating process. During electroplating, the product must be energized to produce the electroplating reaction. In continuous plating production lines, the conductive fixture typically uses a bottom-contact conductive method, with pressure rollers on top to ensure contact between the bottom of the product and the conductive fixture. Due to the small contact area, sparks and scorching are easily generated during production. Furthermore, with technological advancements and increasingly thinner product designs, the pressure from the pressure rollers can cause product deformation. Insufficient pressure can lead to poor contact at the bottom, resulting in serious quality problems such as skipped plating. This is especially true in high-precision, high-quality continuous electroplating production lines for metal leadframes, where quality issues caused by the conductive fixture frequently occur. Therefore, we need to propose a conductive fixture for continuous electroplating production lines. Utility Model Content

[0004] The purpose of this invention is to provide a conductive fixture for a continuous electroplating production line to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A conductive fixture for a continuous electroplating production line includes a base and a central shaft disposed above the base. The base has an internal mounting cavity, one side of which is connected to a compressed gas inlet penetrating the base, and the other side of which is connected to an air outlet penetrating the base.

[0007] A ceramic bearing is embedded in the top of the base, and a T-shaped PP plate is fixedly inserted into the inner ring of the ceramic bearing. The central shaft is fixedly installed on the top of the T-shaped PP plate by bolts, and two sets of conductive rings are arranged on the outer wall of the central shaft in a vertically corresponding manner. The bottom of the T-shaped PP plate extends into the interior of the mounting cavity and is fixedly sleeved with an impeller.

[0008] The base is fixed to a fixing plate on one side of the central axis by bolts. Four sets of pressure roller assemblies are symmetrically arranged on the fixing plate to cooperate with the central axis.

[0009] Preferably, the pressure roller assembly includes a stainless steel bracket, which is slidably sleeved on a fixed plate. A stainless steel block is fixedly installed at one end of the stainless steel bracket, and a rotating shaft is fixedly installed on the stainless steel block. A pressure roller is rotatably installed on the outer wall of the rotating shaft.

[0010] Preferably, one end of the stainless steel bracket is threaded with two sets of locking nuts, one side of which is in contact with one side of the fixing plate.

[0011] Preferably, a spring is fitted on the outer wall of the stainless steel bracket, and the spring is located between the stainless steel block and the fixing plate.

[0012] Preferably, a stainless steel cover plate is fixedly installed on the top of the central shaft by bolts, a stainless steel support is threadedly connected to the middle of the stainless steel cover plate, and a rotating mercury head is installed on the top of the stainless steel support.

[0013] Preferably, the conductive ring is configured as an L-shaped structure, and the side contact surface and the upper and lower edge contact surfaces of the conductive ring are configured as smooth surfaces.

[0014] Preferably, the top of the base has a through groove communicating with the mounting cavity, and the ceramic bearing is fixedly embedded inside the through groove.

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

[0016] This invention utilizes two sets of conductive rings arranged vertically, with adjustable heights to accommodate different products. Four pressure rollers on a fixed plate work together to press the product against the conductive rings, with the central shaft providing additional pressure. The pressure is adjusted by the pressure rollers, stainless steel brackets, springs, locking nuts, and the fixed plate. Compressed air is supplied to the mounting cavity, driving an impeller that in turn rotates the central shaft and conductive rings. This creates a relatively static contact between the product and the conductive rings during continuous production, effectively preventing sparks and skipped plating. The increased contact area also reduces resistance during production, improving product quality stability. Furthermore, the absence of pressure rollers significantly reduces product deformation, allowing for the production of thinner products. Attached Figure Description

[0017] Figure 1 This is a side view of the three-dimensional structure of the present invention;

[0018] Figure 2 This is a cross-sectional structural diagram of the base of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the central shaft and pressure roller assembly of this utility model;

[0020] Figure 4 This is a schematic diagram of the pressure roller assembly of this utility model.

[0021] In the diagram: 1. Base; 2. Mounting cavity; 3. Ceramic bearing; 4. T-shaped PP plate; 5. Impeller; 6. Compressed gas inlet; 7. Gas outlet; 8. Central shaft; 9. Conductive ring; 10. Stainless steel cover plate; 11. Stainless steel support column; 12. Rotating mercury head; 13. Fixing plate; 14. Stainless steel bracket; 15. Stainless steel block; 16. Pressure roller; 17. Spring; 18. Rotating shaft; 19. Locking nut; 20. Through groove. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution:

[0024] A conductive fixture for a continuous electroplating production line includes a base 1 and a central shaft 8 disposed above the base 1. The base 1 has an installation cavity 2 inside. One side of the installation cavity 2 is connected to a compressed gas inlet 6 that penetrates the base 1, and the other side of the installation cavity 2 is connected to an air outlet 7 that penetrates the base 1.

[0025] A ceramic bearing 3 is embedded in the top of the base 1. A T-shaped PP plate 4 is fixedly inserted into the inner ring of the ceramic bearing 3. There is a certain gap between the upper end of the T-shaped PP plate 4 and the base 1 to ensure no frictional resistance. The central shaft 8 is fixedly installed on the top of the T-shaped PP plate 4 by bolts. Two sets of conductive rings 9 are set on the outer wall of the central shaft 8 in a corresponding manner. The bottom of the T-shaped PP plate 4 extends into the interior of the mounting cavity 2 and is fixedly fitted with an impeller 5. The impeller 5 is a PP impeller. There is a 10mm distance between the impeller 5 and the inner wall edge of the mounting cavity 2.

[0026] The base 1 is located on one side of the central shaft 8 and is fixedly mounted with a fixing plate 13 by bolts. Four sets of pressure roller assemblies that work with the central shaft 8 are symmetrically arranged on the fixing plate 13. The fixing plate 13 is made of stainless steel. The base 1 can be fixed to the production line by bolts.

[0027] Furthermore, the pressure roller assembly includes a stainless steel bracket 14, which is slidably sleeved on the fixed plate 13. A stainless steel block 15 is fixedly installed at one end of the stainless steel bracket 14. A rotating shaft 18 is fixedly installed on the stainless steel block 15. A pressure roller 16 is rotatably installed on the outer wall of the rotating shaft 18. The pressure roller 16 can cooperate with the central shaft 8 to press the two sides of the product onto the conductive ring 9.

[0028] Specifically, two sets of locking nuts 19 are threaded onto the outer wall of one end of the stainless steel bracket 14. One side of one set of locking nuts 19 is in contact with one side of the fixing plate 13. The position of the pressure roller 16 at one end of the stainless steel bracket 14 is adjusted by the locking nuts 19 in conjunction with the fixing plate 13.

[0029] Specifically, a spring 17 is fitted on the outer wall of the stainless steel bracket 14. The spring 17 is located between the stainless steel block 15 and the fixing plate 13, so that the pressure roller 16 can move back and forth by means of the spring 17 cooperating with the stainless steel bracket 14.

[0030] Specifically, a stainless steel cover plate 10 is bolted to the top of the central shaft 8. A stainless steel support column 11 is threaded to the middle of the stainless steel cover plate 10, making it easy to disassemble and assemble the stainless steel support column 11. A rotating mercury head 12 is installed on the top of the stainless steel support column 11. The rotating mercury head 12 can be connected to the rectifier power supply of the electroplating production line.

[0031] Specifically, the conductive ring 9 is designed with an L-shaped structure. The side contact surface and the upper and lower edge contact surface of the conductive ring 9 are designed with smooth surfaces. The upper and lower surfaces of the two sets of corresponding conductive rings 9 are fixed to the height of the product. The position of the conductive ring 9 can be adjusted according to the width of different products. The side and the upper and lower edges of the product are in contact with the conductive surface.

[0032] Specifically, the top of the base 1 has a through groove 20 that connects to the mounting cavity 2. The ceramic bearing 3 is fixedly embedded inside the through groove 20, and the through groove 20 provides installation space and support for the ceramic bearing 3.

[0033] Working Principle: This invention utilizes two sets of upper and lower conductive rings 9, whose heights can be adjusted according to the product. These rings, along with pressure rollers 16 from four pressure roller assemblies on the fixed plate 13, work in conjunction with the central shaft 8 to press the product onto the conductive rings 9. The pressure is adjusted by the pressure rollers 16, stainless steel bracket 14, spring 17, locking nut 19, and fixed plate 13. Compressed air is supplied to the mounting cavity 2, and the released air drives the impeller 5 to rotate, generating power that in turn drives the central shaft 8 and conductive rings 9 to rotate automatically. This creates a relatively static contact between the product and the conductive rings 9 during continuous production, effectively preventing sparks and skipped plating. The increased contact area also reduces resistance during production, improving product quality stability. Furthermore, the absence of pressure from the pressure rollers 16 significantly reduces product deformation, allowing for the production of thinner products.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A conductive fixture for a continuous electroplating production line, characterized in that, include: The base (1) and the central shaft (8) located above the base (1); The base (1) has an installation cavity (2) inside. One side of the installation cavity (2) is connected to a compressed gas inlet (6) that penetrates the base (1), and the other side of the installation cavity (2) is connected to an air outlet (7) that penetrates the base (1). A ceramic bearing (3) is embedded in the top of the base (1). A T-shaped PP plate (4) is fixedly inserted into the inner ring of the ceramic bearing (3). The central shaft (8) is fixedly installed on the top of the T-shaped PP plate (4) by bolts. Two sets of conductive rings (9) are arranged on the outer wall of the central shaft (8) in a vertically corresponding manner. The bottom of the T-shaped PP plate (4) extends into the interior of the mounting cavity (2) and is fixedly sleeved with an impeller (5). The base (1) is located on one side of the central shaft (8) and a fixing plate (13) is fixedly installed by bolts. Four sets of pressure roller assemblies are symmetrically arranged on the fixing plate (13) to cooperate with the central shaft (8).

2. The conductive fixture for a continuous electroplating production line according to claim 1, characterized in that: The pressure roller assembly includes a stainless steel bracket (14), which is slidably sleeved on a fixed plate (13). A stainless steel block (15) is fixedly installed at one end of the stainless steel bracket (14), and a rotating shaft (18) is fixedly installed on the stainless steel block (15). A pressure roller (16) is rotatably installed on the outer wall of the rotating shaft (18).

3. The conductive fixture for a continuous electroplating production line according to claim 2, characterized in that: Two sets of locking nuts (19) are threaded onto the outer wall of one end of the stainless steel bracket (14), one side of which of the locking nuts (19) is in contact with one side of the fixing plate (13).

4. The conductive fixture for a continuous electroplating production line according to claim 3, characterized in that: A spring (17) is fitted on the outer wall of the stainless steel bracket (14), and the spring (17) is located between the stainless steel block (15) and the fixing plate (13).

5. The conductive fixture for a continuous electroplating production line according to claim 1, characterized in that: A stainless steel cover plate (10) is fixedly installed on the top of the central shaft (8) by bolts. A stainless steel support column (11) is threadedly connected to the middle of the stainless steel cover plate (10). A rotating mercury head (12) is installed on the top of the stainless steel support column (11).

6. The conductive fixture for a continuous electroplating production line according to claim 1, characterized in that: The conductive ring (9) is configured as an L-shaped structure, and the side contact surface and the upper and lower edge contact surfaces of the conductive ring (9) are configured as smooth surfaces.

7. The conductive fixture for a continuous electroplating production line according to claim 1, characterized in that: The top of the base (1) is provided with a through groove (20) that communicates with the mounting cavity (2), and the ceramic bearing (3) is fixedly embedded in the through groove (20).

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