A kind of spray washing device for improving degreasing efficiency before electroplating

Abstract

This utility model discloses a spray cleaning device for improving the degreasing efficiency before electroplating, relating to the electroplating processing field. It includes a support frame, with a high-pressure pump and a main tank at the lower part of the support frame; a material support platform is installed on the upper part of the support frame, with a sub-tank on the platform. Several straightening fixtures and nozzle arrays are fixedly installed in the sub-tank, and the straightening fixtures and nozzle arrays are staggered along the product's feeding direction. Both the straightening fixtures and nozzle arrays are arranged in a U-shape, allowing the product to pass through the gaps in the U-shape sequentially. A water inlet pipe is installed at the outlet of the high-pressure pump, and several branch pipes are installed at the other end of the water inlet pipe for correspondingly connecting the nozzle arrays. A return water inlet is opened at the bottom of the sub-tank for connecting to the main tank. The bottom of the main tank is connected to the inlet of the high-pressure pump via a pipe. This utility model utilizes the high-pressure pump to spray a high-speed liquid stream from the nozzles to quickly remove oil stains from the workpiece surface, improving pre-plating treatment efficiency and avoiding defective products caused by incomplete pre-plating treatment.

Description

Technical Field

[0001] This utility model relates to the field of electroplating processing, and specifically to a spray washing device for improving the degreasing efficiency before electroplating. Background Technology

[0002] Electroplating is a common surface treatment method. In the electroplating process, degreasing is a crucial pretreatment step that directly affects the quality of the plating layer. Traditional degreasing spray cleaning devices mostly use low-pressure spraying or immersion methods, which have the following problems:

[0003] 1. Insufficient degreasing liquid spray pressure makes it difficult to completely remove oil stains from the workpiece surface;

[0004] 2. Oil stains in the grooves and small blind holes of the workpiece are difficult to remove completely;

[0005] 3. Uneven spray coverage leads to low degreasing efficiency;

[0006] 4. The low recycling rate of degreasing liquid leads to resource waste.

[0007] Therefore, there is an urgent need for a high-pressure spray washing device that can improve degreasing efficiency and reduce energy consumption. Utility Model Content

[0008] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a spray cleaning device that improves the degreasing efficiency before electroplating. This device uses a high-pressure pump to spray a high-speed liquid stream from the nozzle to quickly remove oil stains from the surface of the workpiece, effectively improving the efficiency of pre-plating treatment and avoiding defective products due to incomplete pre-plating treatment.

[0009] The purpose of this utility model is achieved through the following technical solution: This spray cleaning device for improving the degreasing efficiency before electroplating includes a support frame, with a high-pressure pump and a main tank installed at the lower part of the support frame; a material support platform is installed on the upper part of the support frame for lifting and positioning the product, and a sub-tank is set on the material support platform. Several straightening fixtures and nozzle arrays are fixedly installed in the sub-tank, and the straightening fixtures and nozzle arrays are staggered along the material flow direction of the product. At the same time, the straightening fixtures and nozzle arrays are arranged in a U-shaped structure, so that the product passes through the gaps of the U-shaped structure in sequence; a water inlet pipe is installed at the outlet of the high-pressure pump, and several branch pipes are set at the other end of the water inlet pipe for correspondingly connecting the nozzle arrays; a return water inlet is opened at the bottom of the sub-tank for installing a return water pipe, and the other end of the return water pipe is connected to the main tank. The bottom of the main tank is connected to the inlet of the high-pressure pump through a pipe to realize the circulation of the spray cleaning liquid.

[0010] As a further technical solution, a water shield is installed inside the sub-tank. The water shield covers the straightening fixture and the nozzle array, and through holes are opened on both sides of the water shield to allow the product to pass through.

[0011] As a further technical solution, valves are installed on each branch pipe to control the on / off state of each nozzle array.

[0012] As a further technical solution, the nozzle array adopts a combination of fan-shaped and conical nozzles to achieve multi-directional spraying.

[0013] As a further technical solution, the number of nozzle arrays is 1 to 10.

[0014] As a further technical solution, a heating coil for heating the spraying liquid and a level gauge for monitoring the liquid level are installed in the mother tank.

[0015] As a further technical solution, the product is driven to move materials by drive wheels located on the outside of the support frame.

[0016] As a further technical solution, the material support platform can be detachably installed on the support frame, allowing it to slide up and down along the support frame to adjust the installation position.

[0017] As a further technical solution, through holes are opened on both sides of the sub-slot for the product to pass through. An air duct is installed in the sub-slot near the through hole on the discharge side. The air duct is U-shaped and the air outlets are all facing the product.

[0018] The beneficial effects of this utility model are as follows:

[0019] 1. The nozzle array and the straightening fixture are staggered along the material feeding direction of the product and are arranged in a U-shape on both sides of the product, so that the product is sprayed and washed in both the front and back directions, resulting in a more thorough cleaning.

[0020] 2. The nozzle array uses a high-pressure pump to deliver the cleaning fluid, resulting in higher spray pressure and better cleaning effect;

[0021] 3. Each nozzle array can be individually controlled by the valve on the branch pipe, allowing for flexible control of opening or closing. The nozzle array uses a combination of fan-shaped and conical nozzles, which can achieve multi-directional spraying, more uniform coverage, and high degreasing efficiency.

[0022] 4. A water shield is installed above the nozzle array and the straightening fixture to block the water flow from the top and sides, preventing the cleaning fluid from spreading and contaminating the cleaning site. At the same time, the bottom of the sub-tank is connected to the main tank through a return water pipe for water return and reuse.

[0023] 5. A heating coil and a level gauge are installed in the mother tank. Heating the cleaning fluid can improve cleaning efficiency, and the level gauge can monitor the level of the cleaning fluid in the mother tank in real time so that it can be replenished in time.

[0024] 6. Install air ducts near the product outlet of the sub-tank. The air ducts blow air inward from both sides of the product, which can reduce the amount of cleaning liquid carried out. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of this utility model.

[0026] Figure 2 for Figure 1 A magnified view of a portion of region A in the middle.

[0027] Figure 3 This is a schematic diagram showing the positional relationship between the products inside the water shield, the straightening fixture, and the nozzle array.

[0028] Explanation of reference numerals in the attached drawings: 1. High-pressure pump; 2. Water inlet pipe; 3. Valve; 4. Straightening fixture; 5. Nozzle array; 6. Water baffle; 7. Sub-tank; 8. Return water pipe; 9. Main tank; 10. Material support platform; 11. Support frame; 12. Air duct; 13. Heating coil; 14. Level gauge; 15. Drive wheel; 16. Product; 17. Through hole; 18. Branch pipe. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings:

[0030] Example: As attached Figures 1-3 As shown, this spray cleaning device for improving the degreasing efficiency before electroplating includes a high-pressure pump 1, a water inlet pipe 2, a valve 3, a straightening fixture 4, a nozzle array 5, a water baffle 6, a sub-tank 7, a return water pipe 8, a main tank 9, a material support platform 10, a support frame 11, an air duct 12, a heating coil 13, a level gauge 14, a drive wheel 15, a product 16, a through hole 17, and a branch pipe 18.

[0031] Reference Appendix Figure 1 A high-pressure pump 1 and a mother tank 9 are installed at the lower part of the support frame 11. A material support platform 10 is installed at the upper part of the support frame 11. The material support platform 10 is used to lift and position the product 16. Preferably, the material support platform 10 is detachably installed on the support frame 11 to facilitate sliding up and down along the support frame 11 to adjust the installation position. The product 16 is driven by drive wheels 15 located on the outside of the support frame 11.

[0032] like Figure 1 , 2As shown, a sub-trough 7 is set on the material support platform 10. Several sets of straightening fixtures 4 and several sets of nozzle arrays 5 are fixedly installed in the sub-trough 7, and the straightening fixtures 4 and nozzle arrays 5 are staggered along the material flow direction of the product 16. At the same time, the straightening fixtures 4 and nozzle arrays 5 are arranged in a U-shape, so that the product 16 can pass through the gaps of each U-shape in sequence. A water supply pipe 2 is installed at the outlet of the high-pressure pump 1. Several branch pipes 18 are set at the other end of the water supply pipe 2. The branch pipes 18 correspond one-to-one with the nozzle arrays 5 and are connected. A valve 3 is installed on each branch pipe 18 to independently control the on / off of each nozzle array 5. A return water inlet is opened at the bottom of the sub-trough 7. A return water pipe 8 is installed on the return water inlet. The other end of the return water pipe 8 is connected to the main tank 9. The bottom of the main tank 9 is connected to the inlet of the high-pressure pump 1 through a pipe to realize the circulation of the spray washing liquid.

[0033] Further, see attached document. Figure 2 , 3 A water shield 6 (smaller than the sub-tank) is installed inside the sub-tank 7. This water shield 6 covers the straightening fixture 4 and the nozzle array 5 (covering the nozzle array and straightening fixture from top to bottom), which can block the water flow on the top and sides of the product and prevent the cleaning liquid from spreading and contaminating the cleaning site. Furthermore, through holes 17 are opened on both sides of the water shield 6, allowing the product 16 to pass through.

[0034] Preferably, the nozzle array 5 uses a combination of fan-shaped and cone-shaped nozzles to achieve multi-directional spraying. Furthermore, depending on the space size and required cleanliness level, the number of nozzle arrays 5 can be set to 1 to 10 groups.

[0035] A heating coil 13 and a level gauge 14 are installed in the mother tank 9. The heating coil 13 is used to heat the spraying liquid, and the level gauge 14 can monitor the level of the spraying liquid in real time.

[0036] Preferably, through holes 17 are provided on both sides of the sub-trough 7 to allow the product 16 to pass through. An air duct 12 is provided in the sub-trough 7 near the through hole 17 on the discharge side. The air duct 12 is a U-shaped pipe and the air outlets are all facing the product 16 to achieve air blowing inward from both sides, reducing the amount of cleaning liquid carried out from the product 16.

[0037] Furthermore, the high-pressure pump 1 can be controlled by a PLC controller, and the cleaning solution can be either clean water or an alkaline cleaning agent, depending on the actual production situation.

[0038] In actual production, high-pressure spray cleaning is used in continuous electroplating to improve degreasing efficiency. The process flow is as follows: feeding → high-pressure spray cleaning → ultrasonic degreasing → electrolytic degreasing → acid pickling activation → nickel plating → gold plating → gold stripping → electrolytic activation → tin plating → hot water washing → air drying → baking → material collection.

[0039] Chemical control and maintenance: Degreasing solution concentration: 1%-3%, temperature: 50-60℃, change the chemical solution weekly, and thoroughly clean the tank walls.

[0040] Implementation: The product is continuously electroplated from roll to roll, passing through each station sequentially from the unloading stage to the receiving stage. Before entering the electroplating tank, the substrate must be thoroughly cleaned (to remove oil and oxides) and activated. This process directly determines the adhesion and uniformity of the coating. If the pretreatment is insufficient, residual impurities or surface inertness will cause the coating to blister, peel off, or increase porosity, seriously affecting the product's conductivity, corrosion resistance, and appearance quality.

[0041] The introduction of high-pressure spray cleaning in the pretreatment process, employing directional jetting and pressure control, effectively enhances the pretreatment effect of the substrate surface, ensuring coating uniformity and adhesion. This improvement effectively addresses the issue of difficult-to-clean grooves after bending, successfully increasing production line speed from 5 meters / minute to 8 meters / minute, a 60% increase. This technological improvement, by shortening the cleaning cycle and reducing rework rates, increases throughput per unit time.

[0042] The working process of this utility model:

[0043] During cleaning, the product 16 is first lifted by the material support platform 10 and fed into the sub-tank 7, passing sequentially through the straightening fixture 4 and the nozzle array 5. The water shield 6 is then placed over the straightening fixture 4 and the nozzle array 5, and the high-pressure pump 1 is started to begin cleaning. The high-pressure pump 1 pumps cleaning fluid through the water inlet pipe 2, which is then sent to the corresponding nozzle array 5 through the branch pipe 18 and valve 3. The cleaning fluid is sprayed out from the nozzle array 5 to clean the product 16. The water shield 6, in conjunction with the sub-tank 7, collects the cleaning fluid and returns it to the main tank 9 through the return water pipe 8. The drive wheel 15 drives the product 16 to move forward. Simultaneously, air is blown inward from both sides of the air duct 12 to reduce the amount of cleaning fluid remaining on the product 16 being carried away.

[0044] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this utility model should fall within the protection scope of the appended claims.

Claims

1. A spray cleaning device for improving degreasing efficiency before electroplating, characterized in that: The system includes a support frame (11), with a high-pressure pump (1) and a mother tank (9) installed at the lower part of the support frame (11); a material support platform (10) is installed on the upper part of the support frame (11) for lifting and positioning the product (16). A sub-slot (7) is provided on the material support platform (10), and several straightening fixtures (4) and nozzle arrays (5) are fixedly installed in the sub-slots (7). The straightening fixtures (4) and nozzle arrays (5) are staggered along the material flow direction of the product (16). At the same time, the straightening fixtures (4) and nozzle arrays (5) are staggered along the material flow direction of the product (16). All of them adopt a U-shaped structure arrangement so that the product (16) passes through the gap of the U-shaped structure; the outlet of the high pressure pump (1) is equipped with a water supply pipe (2), and the other end of the water supply pipe (2) is equipped with several branch pipes (18) for connecting the nozzle array (5) one by one; a return water port is opened at the bottom of the sub-tank (7) for installing a return water pipe (8); the other end of the return water pipe (8) is connected to the main tank (9); the bottom of the main tank (9) is connected to the inlet of the high pressure pump (1) through a pipe to realize the circulation of the spray washing liquid.

2. The spray cleaning device for improving degreasing efficiency before electroplating according to claim 1, characterized in that: A water shield (6) is installed in the sub-slot (7). The water shield (6) covers the straightening fixture (4) and the nozzle array (5), and through holes (17) are opened on both sides of the water shield (6) for the product (16) to pass through.

3. The spray cleaning device for improving degreasing efficiency before electroplating according to claim 1, characterized in that: Each branch pipe (18) is equipped with a valve (3) to control the on / off state of each nozzle array (5).

4. The spray cleaning device for improving degreasing efficiency before electroplating according to claim 1, characterized in that: The nozzle array (5) uses a combination of fan-shaped and cone-shaped nozzles to achieve multi-directional spraying.

5. The spray cleaning device for improving degreasing efficiency before electroplating according to claim 1, characterized in that: The number of nozzle arrays (5) is 1 to 10.

6. The spray cleaning device for improving degreasing efficiency before electroplating according to claim 1, characterized in that: The mother tank (9) is equipped with a heating coil (13) for heating the spraying liquid and a level gauge (14) for monitoring the level of the spraying liquid.

7. The spray cleaning device for improving degreasing efficiency before electroplating according to claim 1, characterized in that: The product (16) is driven by a drive wheel (15) located on the outside of the support frame (11).

8. The spray cleaning device for improving degreasing efficiency before electroplating according to claim 1, characterized in that: The material support platform (10) is detachably mounted on the support frame (11) and can slide up and down along the support frame (11) to adjust the installation position.

9. The spray cleaning device for improving degreasing efficiency before electroplating according to claim 1, characterized in that: The sub-slot (7) has through holes (17) on both sides for the product (16) to pass through. An air duct (12) is installed in the sub-slot (7) near the through hole (17) on the discharge side. The air duct (12) is a U-shaped pipe and the air outlet is facing the product (16).

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