Continuous copper plating bath structure for steel strip

Abstract

This utility model discloses a continuous plating tank structure for copper-plated steel strip, including a tank body. The tank body has a cleaning chamber, a rinsing chamber, and an electroplating chamber respectively. The rinsing chamber is located between the cleaning chamber and the electroplating chamber. A water-driving component is installed at the top of the cleaning chamber, positioned close to the rinsing chamber. The water-driving component includes two fixed seats fixedly connected to the outer wall of the top of the tank body. Two vertically arranged guide rods are fixedly connected to the outer sides of each of the two fixed seats. The two guide rods on one side are slidably fitted with the same movable seat. A pressure roller is rotatably connected between each of the two fixed seats and the two movable seats. A spring is fitted around each of the four guide rods. By incorporating the water-driving component, this utility model can squeeze the surface of the steel strip before it moves out of the cleaning chamber, thereby ensuring that the acid adhering to its surface is driven away to the maximum extent, thus avoiding excessive consumption of the solution.

Description

Technical Field

[0001] This utility model relates to the field of electroplating technology, specifically to a continuous plating tank structure for copper-plated steel strips. Background Technology

[0002] The continuous copper plating tank for steel strip is an electroplating equipment used to continuously deposit copper layers on the surface of steel strip. It is widely used in industries such as electronics, communications, and power to improve the conductivity, corrosion resistance, and weldability of steel strip.

[0003] A search revealed a utility model patent with Chinese patent publication number CN103952737B, which discloses a continuous copper plating process for steel strips using cyanide copper plating. The process mainly includes a pretreatment process and a copper plating process. The pretreatment process mainly includes ultrasonic degreasing, electrolytic degreasing, water washing, activation, and water washing; the electroplating process mainly includes copper plating, recovery, and water washing. The process tank in the continuous copper plating of the steel strip is a closed, transparent, isosceles trapezoidal tank with openable observation windows and simultaneous venting. The tank body is designed with an isosceles trapezoidal shape at the top; three transparent, automatically opening observation windows are designed on each of the two sloping sections of the tank.

[0004] As mentioned above, impurities need to be removed from the continuous trough before the steel strip is electroplated. After the steel strip moves out of the pickling tank, some of it will adhere to the surface. If it is not treated, a large portion will be washed away by the subsequent water washing process, which will greatly increase the consumption of these solutions, indicating room for improvement. Utility Model Content

[0005] The purpose of this invention is to provide a continuous plating tank structure for copper-plated steel strips to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a continuous copper plating tank structure for steel strips, comprising a tank body, wherein a cleaning chamber, a rinsing chamber, and an electroplating chamber are respectively provided inside the tank body, the rinsing chamber being located between the cleaning chamber and the electroplating chamber, a water-driving assembly being installed at the top of the cleaning chamber, the water-driving assembly being arranged close to the rinsing chamber, the water-driving assembly including two fixed seats fixedly connected to the outer wall of the top of the tank body, two vertically arranged guide rods fixedly connected to the outer side of each of the two fixed seats, the two guide rods on one side being slidably fitted with the same movable seat, a pressure roller being rotatably connected between each of the two fixed seats and the two movable seats, and a spring being fitted on the outer side of each of the four guide rods, the two ends of the four springs being fixedly connected to the adjacent fixed seats and movable seats respectively.

[0007] As a further preferred embodiment of this technical solution, each of the two pressure rollers is fixedly fitted with a compression sleeve.

[0008] The system can compress the surface of the steel belt before it moves out of the cleaning chamber, ensuring that the acid adhering to its surface is removed to the greatest extent possible, thus avoiding excessive consumption of the solution. Since the spring is in a stretched state under normal conditions, its tension is transmitted to the pressure roller connected to it through the moving seat, causing the steel belt to be squeezed close to the position of the bottom pressure roller. At this time, the upper and lower surfaces of the steel belt will be squeezed by the two extrusion sleeves respectively, thus forming a barrier. When the steel belt moves outward from the inside of the cleaning chamber, the acidic solution adhering to it will be intercepted, and only a very small part will adhere to the surface of the steel belt, effectively avoiding the waste of acidic solution.

[0009] As a further preferred embodiment of this technical solution, two support components are installed on the top of the tank, with the two support components respectively located at the top of the cleaning chamber and the electroplating chamber.

[0010] As a further preferred embodiment of this technical solution, the support assembly includes a support frame fixedly connected to the outer wall of the top of the tank. Two horizontally arranged limiting rods are fixedly connected inside the support frame. The two limiting rods are slidably connected to two movable frames. A horizontally arranged support roller is rotatably connected to the bottom of each of the two movable frames. A motor is fixedly installed on one side of the outer wall of the support frame. A horizontally arranged lead screw is rotatably connected inside the support frame. The output end of the motor is coaxially fixed with one end of the lead screw.

[0011] As a further preferred embodiment of this technical solution, five horizontally arranged guide rollers are rotatably connected inside the tank, four of which are located on both sides of the cleaning chamber and the electroplating chamber, and the other guide roller is rotatably connected inside the rinsing chamber, where two parallel water spray pipes are fixedly installed.

[0012] When the motor on the side wall of the support frame is started, the output end of the motor drives the lead screw to rotate. The lead screw can then drive the two movable frames connected to it to move away from each other along the limit rod. The support rollers installed at the bottom of the movable frames will also be driven to move synchronously. Correspondingly, the length of the steel strip immersed in the solution will also increase, so the time it takes to move out of the solution will become longer.

[0013] As a further preferred embodiment of this technical solution, the thread helix angle of the external thread of the lead screw is smaller than the equivalent friction angle.

[0014] As a further preferred embodiment of this technical solution, the extrusion sleeve is made of fluororubber material.

[0015] This utility model provides a continuous plating tank structure for copper-plated steel strips, which has the following beneficial effects: (1) By setting up a water-driving component, this utility model can squeeze the surface of the steel belt before it moves out of the cleaning chamber, thereby ensuring that the acid attached to its surface can be driven away to the maximum extent, thus avoiding excessive consumption of the solution. Since the spring is in a stretched state under normal conditions, its tension will be transmitted to the pressure roller connected to it through the moving seat, so that the steel belt is squeezed close to the position of the bottom pressure roller. At this time, the upper and lower surfaces of the steel belt will be squeezed by the two extrusion sleeves respectively, thus forming a barrier. When the steel belt moves outward from the inside of the cleaning chamber, the acidic solution attached to it will be intercepted, and only a very small part will be attached to the surface of the steel belt, effectively avoiding the waste of acidic solution.

[0016] (2) By setting up a support component, the motor on the side wall of the support frame is started. The output end of the motor drives the lead screw to rotate. The lead screw can drive the two movable frames connected to it to move away from each other along the limit rod. The support roller installed at the bottom of the movable frame will also be driven to move synchronously. Correspondingly, the length of the steel strip immersed in the solution will also increase, so the time it takes to move out of the solution will be longer. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model; Figure 2 This is a schematic diagram of the overall second-view structure of this utility model; Figure 3 For the present utility model Figure 1 Enlarged structural diagram at point A; Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point B; In the diagram: 1. Tank; 2. Cleaning chamber; 3. Rinsing chamber; 4. Electroplating chamber; 5. Guide roller; 6. Water driving assembly; 7. Support assembly; 601. Fixed seat; 602. Guide rod; 603. Moving seat; 604. Pressure roller; 605. Extrusion sleeve; 606. Spring; 701. Support frame; 702. Limiting rod; 703. Lead screw; 704. Moving frame; 705. Support roller; 706. Motor. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0019] This utility model provides a technical solution: such as Figure 1 and Figure 3As shown in the figure, in this embodiment, the continuous copper plating tank structure for steel strip includes a tank body 1. The tank body 1 has a cleaning chamber 2, a rinsing chamber 3, and an electroplating chamber 4 (the anode plate inside is not shown in the figure; the cathode end can be connected to a mounting base of a guide roller 5 near the outside at the top of the electroplating chamber 4. This mounting base and the guide roller 5 are made of metal, and electroplating can be achieved in conjunction with the anode plate). The rinsing chamber 3 is located between the cleaning chamber 2 and the electroplating chamber 4. A water-driving component 6 is installed at the top of the cleaning chamber 2, and the water-driving component 6 is positioned towards the rinsing chamber 3. The water-driving assembly 6 includes two fixed seats 601 fixedly connected to the top outer wall of the tank 1. Two vertically arranged guide rods 602 are fixedly connected to the outer side of each of the two fixed seats 601. The same movable seat 603 is slidably sleeved on one side of the two guide rods 602. A pressure roller 604 is rotatably connected between each of the two fixed seats 601 and the two movable seats 603. A spring 606 is sleeved on the outside of each of the four guide rods 602. The two ends of the four springs 606 are fixedly connected to the adjacent fixed seats 601 and movable seats 603 respectively.

[0020] Each of the two pressure rollers 604 is fixedly fitted with a compression sleeve 605, which makes the pressure rollers 604 fit better with the steel strip and helps to improve the water dispersing effect.

[0021] Since the spring 606 is in a stretched state under normal conditions, its tension is transmitted to the pressure roller 604 connected to it through the movable seat 603, causing the steel strip to be squeezed close to the position of the bottom pressure roller 604. At this time, the upper and lower surfaces of the steel strip will be squeezed by the two extrusion sleeves 605 respectively, thus forming a barrier. When the steel strip moves outward from the inside of the cleaning chamber 2, the acidic solution attached to it will be intercepted, and only a very small part will be attached to the surface of the steel strip, effectively avoiding the waste of acidic solution.

[0022] like Figure 2 and Figure 4 As shown, two support components 7 are installed on the top of the tank 1, and the two support components 7 are located at the top of the cleaning chamber 2 and the electroplating chamber 4, respectively.

[0023] The support assembly 7 includes a support frame 701 fixedly connected to the top outer wall of the tank 1. Two horizontally arranged limiting rods 702 are fixedly connected inside the support frame 701. The two limiting rods 702 are slidably connected to two movable frames 704. A horizontally arranged support roller 705 is rotatably connected to the bottom of each of the two movable frames 704. A motor 706 is fixedly installed on one side of the outer wall of the support frame 701. A horizontally arranged lead screw 703 is rotatably connected inside the support frame 701. The output end of the motor 706 is coaxially fixed with one end of the lead screw 703.

[0024] The motor 706 on the side wall of the support frame 701 is started. The output end of the motor 706 drives the lead screw 703 to rotate. The lead screw 703 can then drive the two movable frames 704 connected to it to move away from each other along the limit rod 702. The support roller 705 installed at the bottom of the movable frame 704 will also be driven to move synchronously. Correspondingly, the length of the steel strip immersed in the solution will also increase, so the time it takes to move out of the solution will be longer.

[0025] like Figure 1 As shown in Figure 2, five horizontally arranged guide rollers 5 are rotatably connected inside the tank 1. Four of the guide rollers 5 are located on both sides of the cleaning chamber 2 and the electroplating chamber 4, respectively. The other guide roller 5 is rotatably connected inside the rinsing chamber 3. Two parallel water spray pipes are fixedly installed inside the rinsing chamber 3. The water spray direction of the two water spray pipes is towards the steel strip, which is used to rinse the acidic solution on the surface of the steel strip.

[0026] like Figure 2 As shown, the thread helix angle of the external thread of the lead screw 703 is smaller than the equivalent friction angle, giving it a self-locking property.

[0027] like Figure 3 As shown, the extrusion sleeve 605 is made of fluororubber material. Fluororubber has excellent resistance to strong acids such as concentrated sulfuric acid, hydrochloric acid, and hydrofluoric acid, and can maintain chemical stability, especially at high temperatures.

[0028] This utility model provides a continuous plating tank structure for copper-plated steel strips, and its specific working principle is as follows: When the device is working, the steel strip is taken out from the external unwinding equipment, then wound around as shown in the attached diagram, and finally fixed on the external winding equipment. Since the steel strip is supported by the support roller 705 inside the cleaning chamber 2 and the electroplating chamber 4, the supported part can come into contact with the acidic solution inside the cleaning chamber 2 and the electroplating solution inside the electroplating chamber 4. When the steel strip passes through the inner range of the cleaning chamber 2, external impurities can be cleaned, and when the steel strip passes through the inner range of the electroplating chamber 4, it can be electroplated.

[0029] Since the spring 606 is in a stretched state under normal conditions, its tension is transmitted to the pressure roller 604 connected to it through the movable seat 603, causing the steel strip to be squeezed close to the position of the bottom pressure roller 604. At this time, the upper and lower surfaces of the steel strip will be squeezed by the two extrusion sleeves 605 respectively, thus forming a barrier. When the steel strip moves outward from the inside of the cleaning chamber 2, the acidic solution attached to it will be intercepted, and only a very small part will be attached to the surface of the steel strip, effectively avoiding the waste of acidic solution.

[0030] If there are many impurities on the surface of the steel strip, or if the electroplating time needs to be increased, the support components 7 at the top of the corresponding groove can be adjusted respectively, and the motor 706 on the side wall of the support frame 701 can be started. The output end of the motor 706 drives the lead screw 703 to rotate. The lead screw 703 can drive the two movable frames 704 connected to it to move away from each other along the limit rod 702. The support roller 705 installed at the bottom of the movable frame 704 will also be driven to move synchronously. Correspondingly, the length of the steel strip immersed in the solution will also increase, so the time it takes to move out of the solution will be longer.

[0031] 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 continuous copper plating bath structure for copper plating steel strip, comprising a bath body (1), characterized in that: The tank (1) is provided with a cleaning chamber (2), a rinsing chamber (3) and an electroplating chamber (4) respectively. The rinsing chamber (3) is located in the middle of the cleaning chamber (2) and the electroplating chamber (4). A water-driving assembly (6) is installed at the top of the cleaning chamber (2). The water-driving assembly (6) is arranged close to the rinsing chamber (3). The water-driving assembly (6) includes two fixed seats (601) fixedly connected to the outer wall of the top of the tank (1). Two vertically arranged guide rods (602) are fixedly connected to the outer side of the two fixed seats (601). The two guide rods (602) on one side are slidably fitted with the same movable seat (603). A pressure roller (604) is rotatably connected between the two fixed seats (601) and the two movable seats (603). A spring (606) is fitted on the outside of the four guide rods (602). The two ends of the four springs (606) are fixedly connected to the adjacent fixed seats (601) and movable seats (603) respectively.

2. The continuous plating tank structure for copper-plated steel strip according to claim 1, characterized in that: Each of the two pressure rollers (604) is fixedly fitted with a compression sleeve (605).

3. The copper plated steel strip continuous plating cell structure according to claim 1, characterized in that: Two support components (7) are installed on the top of the tank (1), and the two support components (7) are respectively located at the top of the cleaning chamber (2) and the electroplating chamber (4).

4. The copper plated steel strip continuous plating cell structure according to claim 3, characterized in that: The support assembly (7) includes a support frame (701) fixedly connected to the top outer wall of the tank (1). The support frame (701) has two horizontally arranged limiting rods (702) fixedly connected inside. The two limiting rods (702) are slidably connected to two movable frames (704). The bottom of each of the two movable frames (704) is rotatably connected to a horizontally arranged support roller (705). A motor (706) is fixedly installed on one side outer wall of the support frame (701). A horizontally arranged lead screw (703) is rotatably connected inside the support frame (701). The output end of the motor (706) is coaxially fixed with one end of the lead screw (703).

5. The copper plated steel strip continuous plating cell configuration of claim 1 wherein: The tank (1) is rotatably connected to five horizontally arranged guide rollers (5), four of which are located on the sides of the cleaning chamber (2) and the electroplating chamber (4), and the other guide roller (5) is rotatably connected to the inside of the rinsing chamber (3). The rinsing chamber (3) is fixedly installed with two parallel water spray pipes.

6. The copper plated steel strip continuous plating cell structure according to claim 4, characterized in that: The thread helix angle of the external thread of the lead screw (703) is less than the equivalent friction angle.

7. The copper plated steel strip continuous plating cell structure according to claim 2, characterized in that: The extrusion sleeve (605) is made of fluororubber material.

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