A stepped pickling tank for recycling circuit boards

Abstract

The utility model discloses a kind of circuit board recycling's stepped pickling tank, including bottom plate, pickling frame and be used for the pickling assembly of different metal inside circuit board in stages dissolution;Wherein, pickling assembly includes first pickling tank, second pickling tank, third pickling tank, cleaning module and moving module;Moving module includes connecting rod, connecting ring, slide rail structure and drive structure, by setting pickling liquid of different concentration in first pickling tank, second pickling tank and third pickling tank, then moving module drives pickling frame to move between first pickling tank, second pickling tank and third pickling tank, to carry out dissolution to the different metal of circuit board, and by setting first cleaning tank between first pickling tank and second pickling tank, second cleaning tank is set between second pickling tank and third pickling tank, to carry out water spray cleaning to the circuit board inside pickling frame, avoid the mixing of pickling liquid of different concentration.

Description

Technical Field

[0001] This utility model relates to the field of circuit board recycling technology, specifically a stepped pickling tank for circuit board recycling. Background Technology

[0002] With rapid development, the number of discarded circuit boards is increasing daily. Circuit boards contain large amounts of precious and rare metals, such as gold, silver, and copper. Recycling and reusing them not only reduces resource waste but also lowers environmental pollution. Currently, acid washing is a crucial step in the circuit board recycling process, as it separates the metals from other impurities.

[0003] However, most existing pickling tanks have a single structure, resulting in poor pickling effect. The simultaneous dissolution of different metal layers (copper foil, nickel layer, gold plating, etc.) makes subsequent separation difficult. At the same time, when pickling circuit boards with different compositions, the single-structure pickling tank requires frequent replacement of acid solution, resulting in low pickling efficiency and increased cost. Therefore, we need to propose a stepped pickling tank for circuit board recycling. Summary of the Invention

[0004] The purpose of this invention is to provide a stepped pickling tank for circuit board recycling. By setting pickling solutions of different concentrations in the first, second, and third pickling tanks, and then moving the pickling frame between the first, second, and third pickling tanks using a moving module, different metals of the circuit board are dissolved, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stepped pickling tank for circuit board recycling, comprising a bottom plate, a pickling frame, and a pickling assembly for dissolving different metals inside the circuit board in stages;

[0006] The pickling assembly includes a first pickling tank, a second pickling tank, a third pickling tank, a cleaning module, and a moving module; the first pickling tank, the second pickling tank, and the third pickling tank are arranged in a stepped manner.

[0007] The mobile module includes a connecting rod, a connecting ring, a slide rail structure, and a drive structure. The connecting rod is rotatably connected to the pickling frame via a rotating column. The top end of the connecting rod is fixedly connected to the connecting ring, and the connecting ring is slidably connected to the slide rail structure.

[0008] Preferably, the cleaning module includes a first cleaning tank, a second cleaning tank, cleaning nozzles, and a water tank. The first cleaning tank is located between the first pickling tank and the second pickling tank, and the second cleaning tank is located between the second pickling tank and the third pickling tank. Two sets of water tanks are provided, and the two sets of water tanks are fixedly installed on the upper surface of the base plate. Several sets of cleaning nozzles are provided inside the first and second cleaning tanks, and the several sets of cleaning nozzles are connected to the corresponding water tanks through connecting pipes. Cleaning grooves corresponding to the pickling frames are opened on both sides of the first and second cleaning tanks.

[0009] Preferably, the drive structure includes a mounting frame, a motor, a moving block, a lead screw, and a telescopic rod. The mounting frame is mounted on the upper surface of the base plate via a support rod. The motor is bolted to one end of the mounting frame. The lead screw is rotatably mounted inside the mounting frame. The moving block is threaded onto the outer arc surface of the lead screw. The lead screw is keyed to the output end of the motor.

[0010] Preferably, the telescopic rod includes a telescopic sleeve, a telescopic rod, and a limiting plate. The limiting plate is fixedly disposed at the top end of the telescopic rod, and both the telescopic rod and the limiting plate are slidably disposed inside the telescopic sleeve.

[0011] Preferably, the movable block is configured as a convex block, and the side of the mounting frame is provided with a movable groove corresponding to the movable block, and the movable block is fixedly connected to the telescopic sleeve through an extension column.

[0012] Preferably, the slide rail structure includes V-shaped slides and transverse slides. There are three sets of V-shaped slides and two sets of transverse slides. The three sets of V-shaped slides are located above the first pickling tank, the second pickling tank, and the third pickling tank, respectively. The two sets of transverse slides are located above the first cleaning tank and the second cleaning tank, respectively. The three sets of V-shaped slides and the two sets of transverse slides are connected end to end.

[0013] Preferably, the pickling frame is provided with a snap-fit ​​frame on its side, and limit blocks are provided on both sides of the snap-fit ​​frame. The pickling frame is provided with a limit groove corresponding to the limit blocks on its side.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This invention uses pickling solutions of different concentrations in a first pickling tank, a second pickling tank, and a third pickling tank. A moving module then moves a pickling frame between these three tanks to dissolve different metals on the circuit board. Furthermore, by placing a first cleaning tank between the first and second pickling tanks and a second cleaning tank between the second and third pickling tanks, the circuit board inside the pickling frame is sprayed with water for cleaning, thus preventing the pickling solutions of different concentrations from mixing.

[0016] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is an exploded view of the overall structure of this utility model;

[0019] Figure 3 This utility model Figure 2 Side view;

[0020] Figure 4 This utility model Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 5 This utility model Figure 3 Enlarged view of the structure at point B in the middle.

[0022] In the diagram: 1. Base plate; 2. First pickling tank; 3. First cleaning tank; 4. Second pickling tank; 5. Second cleaning tank; 6. Third pickling tank; 7. Mounting frame; 8. V-shaped slide rail; 9. Horizontal slide rail; 10. Cleaning nozzle; 11. Motor; 12. Pickling frame; 13. Water tank; 14. Moving groove; 15. Moving block; 16. Lead screw; 17. Cleaning tank; 18. Discharge port; 19. Rotating column; 20. Plug-in frame; 21. Limiting block; 22. Limiting groove; 23. Telescopic sleeve; 24. Telescopic rod; 25. Limiting plate. Detailed Implementation

[0023] 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.

[0024] This utility model provides: a stepped pickling tank for circuit board recycling, such as... Figure 1-5As shown, the system includes a base plate 1, an acid pickling frame 12, and an acid pickling assembly for dissolving different metals inside the circuit board in stages. The acid pickling assembly includes a first acid pickling tank 2, a second acid pickling tank 4, a third acid pickling tank 6, a cleaning module, and a moving module. The first acid pickling tank 2, the second acid pickling tank 4, and the third acid pickling tank 6 are arranged in a stepped manner. Acid solutions of different concentrations are set in the first acid pickling tank 2, the second acid pickling tank 4, and the third acid pickling tank 6. An 8-12% nitric acid solution is set in the first acid pickling tank 2 to dissolve the precious metal layer inside the circuit board. A 15-20% sulfuric acid solution is set in the second acid pickling tank 4 to dissolve the nickel layer inside the circuit board. A 25-30% sulfuric acid and hydrogen peroxide mixture is set in the third acid pickling tank 6 to dissolve the copper substrate of the circuit board. This allows different materials to be dissolved in different acid pickling tanks, facilitating the collection of the dissolved materials.

[0025] Preferably, the movable module includes a connecting rod, a connecting ring, a slide rail structure, and a drive structure. The connecting rod is rotatably connected to the pickling frame 12 via a rotating column 19, and the pickling frame 12 is rotatably connected to the connecting rod, ensuring that the pickling frame 12 can rotate, thereby ensuring the effectiveness of the pickling process. At the same time, no matter how the pickling frame 12 rotates, it can enter the first cleaning tank 3 or the second cleaning tank 5 through the cleaning tank 17. The top of the connecting rod is fixedly connected to the connecting ring, and the connecting ring is slidably connected to the slide rail structure. A plug-in frame 20 is snapped onto the side of the pickling frame 12. Limiting blocks 21 are provided on both sides of the plug-in frame 20. Limiting grooves 22 corresponding to the limiting blocks 21 are opened on the side of the pickling frame 12. Hollows are opened around the pickling frame 12 and the plug-in frame 20, thereby ensuring that the circuit board can contact the pickling liquid after being placed inside the pickling frame 12. The limiting blocks 21 are set as protrusions, and the limiting blocks 21 move along the limiting grooves 22, thereby ensuring the stability of the connection between the plug-in frame 20 and the pickling frame 12.

[0026] In addition, the cleaning module includes a first cleaning tank 3, a second cleaning tank 5, cleaning nozzles 10, and a water tank 13. The first cleaning tank 3 is located between the first pickling tank 2 and the second pickling tank 4. The second cleaning tank 5 is located between the second pickling tank 4 and the third pickling tank 6. Two sets of water tanks 13 are provided, and the two sets of water tanks 13 are fixedly installed on the upper surface of the base plate 1. Several sets of cleaning nozzles 10 are provided inside the first cleaning tank 3 and the second cleaning tank 5, and the several sets of cleaning nozzles 10 are connected to the corresponding water tanks 13 through connecting pipes. Both sides of the washing tank 5 are provided with cleaning tanks 17 corresponding to the pickling frame 12. The water tank 13 is equipped with a water pump and is connected to the cleaning gun head 10. When the pickling frame 12 moves into the first washing tank 3 and the second washing tank 5, several sets of cleaning gun heads 10 spray water to clean the pickling frame 12 and the circuit board inside, so as to avoid the mixing of different pickling solutions and affect the dissolution effect. At the same time, the bottom of the first pickling tank 2, the first cleaning tank 3, the second pickling tank 4, the second cleaning tank 5 and the third pickling tank 6 are all provided with drain ports 18 to facilitate the discharge of wastewater and waste pickling solution.

[0027] Furthermore, the drive structure includes a mounting frame 7, a motor 11, a moving block 15, a lead screw 16, and a telescopic rod. The mounting frame 7 is mounted on the upper surface of the base plate 1 via a support rod. The motor 11 is bolted to one end of the mounting frame 7. The lead screw 16 is rotatably mounted inside the mounting frame 7. The moving block 15 is threaded onto the outer arc surface of the lead screw 16. The lead screw 16 is keyed to the output end of the motor 11. When the motor 11 is started, it drives the lead screw 16 to rotate. The lead screw 16 drives the moving block 15 to move along the lead screw 16 via a thread. The mounting frame 7 supports the motor 11, the moving block 15, and the lead screw 16, ensuring the overall stability of the drive structure.

[0028] Furthermore, the telescopic rod includes a telescopic sleeve 23, a telescopic rod 24, and a limiting plate 25. The limiting plate 25 is fixedly installed at the top of the telescopic rod 24, and both the telescopic rod 24 and the limiting plate 25 are slidably installed inside the telescopic sleeve 23. The moving block 15 is a convex block, and the side of the mounting frame 7 is provided with a moving groove 14 corresponding to the moving block 15. The moving block 15 is a convex block to ensure that the moving block 15 will not rotate with the lead screw 16. The moving block 15 is fixedly connected to the telescopic sleeve 23 through an extension column. The telescopic rod 24 is limited inside the telescopic sleeve 23 by the limiting plate 25, thereby preventing the entire telescopic rod 24 from falling out of the telescopic sleeve 23. At the same time, it ensures that the moving block 15 can move up and down when it drives the pickling frame 12 to move.

[0029] It is worth noting that the slide rail structure includes V-shaped slide rails 8 and transverse slide rails 9. There are three sets of V-shaped slide rails 8 and two sets of transverse slide rails 9. The three sets of V-shaped slide rails 8 are located above the first pickling tank 2, the second pickling tank 4, and the third pickling tank 6, respectively. The two sets of transverse slide rails 9 are located above the first cleaning tank 3 and the second cleaning tank 5, respectively. The three sets of V-shaped slide rails 8 and the two sets of transverse slide rails 9 are connected end to end. The slide rail structure is set as shown in the figure. The overall surface of the slide rail structure is set as an arc shape, so as to ensure the smoothness of the connecting ring during the movement of the outer arc surface of the V-shaped slide rails 8 and the transverse slide rails 9. At the same time, when the pickling frame 12 moves along the V-shaped slide rails 8, it will enter the first pickling tank 2, the second pickling tank 4, or the third pickling tank 6 for pickling. When the pickling frame 12 moves along the transverse slide rails 9, it will enter the first cleaning tank 3 or the second cleaning tank 5 for cleaning, so as to ensure the pickling effect of the circuit board inside the pickling frame 12 and facilitate the collection of dissolved materials.

[0030] 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 stepped pickling tank for circuit board recycling, characterized in that, include: The base plate (1), the pickling frame (12), and the pickling assembly for dissolving different metals inside the circuit board in stages; The pickling assembly includes a first pickling tank (2), a second pickling tank (4), a third pickling tank (6), a cleaning module, and a moving module; the first pickling tank (2), the second pickling tank (4), and the third pickling tank (6) are arranged in a stepped manner; The mobile module includes a connecting rod, a connecting ring, a slide rail structure and a driving structure. The connecting rod is rotatably connected to the pickling frame (12) through a rotating column (19). The top end of the connecting rod is fixedly connected to the connecting ring, and the connecting ring is slidably connected to the slide rail structure.

2. The stepped pickling tank for circuit board recycling according to claim 1, characterized in that: The cleaning module includes a first cleaning tank (3), a second cleaning tank (5), cleaning nozzles (10), and a water tank (13). The first cleaning tank (3) is located between the first pickling tank (2) and the second pickling tank (4). The second cleaning tank (5) is located between the second pickling tank (4) and the third pickling tank (6). There are two sets of water tanks (13), and the two sets of water tanks (13) are fixedly installed on the upper surface of the base plate (1). Several sets of cleaning nozzles (10) are provided inside the first cleaning tank (3) and the second cleaning tank (5), and the several sets of cleaning nozzles (10) are connected to the corresponding water tanks (13) through connecting pipes. Cleaning grooves (17) corresponding to the pickling frame (12) are opened on both sides of the first cleaning tank (3) and the second cleaning tank (5).

3. The stepped pickling tank for circuit board recycling according to claim 2, characterized in that: The drive structure includes a mounting frame (7), a motor (11), a moving block (15), a lead screw (16), and a telescopic rod. The mounting frame (7) is mounted on the upper surface of the base plate (1) via a support rod. The motor (11) is bolted to one end of the mounting frame (7). The lead screw (16) is rotatably mounted inside the mounting frame (7). The moving block (15) is threaded onto the outer arc surface of the lead screw (16). The lead screw (16) is keyed to the output end of the motor (11).

4. The stepped pickling tank for circuit board recycling according to claim 3, characterized in that: The telescopic rod includes a telescopic sleeve (23), a telescopic rod (24), and a limiting plate (25). The limiting plate (25) is fixedly installed at the top of the telescopic rod (24), and both the telescopic rod (24) and the limiting plate (25) are slidably installed inside the telescopic sleeve (23).

5. The stepped pickling tank for circuit board recycling according to claim 4, characterized in that: The movable block (15) is configured as a convex block, and the side of the mounting frame (7) is provided with a movable groove (14) corresponding to the movable block (15), and the movable block (15) is fixedly connected to the telescopic sleeve (23) through an extension column.

6. The stepped pickling tank for circuit board recycling according to claim 1, characterized in that: The slide rail structure includes a V-shaped slide rail (8) and a transverse slide rail (9). There are three sets of V-shaped slide rails (8) and two sets of transverse slide rails (9). The three sets of V-shaped slide rails (8) are located above the first pickling tank (2), the second pickling tank (4) and the third pickling tank (6) respectively. The two sets of transverse slide rails (9) are located above the first cleaning tank (3) and the second cleaning tank (5) respectively. The three sets of V-shaped slide rails (8) and the two sets of transverse slide rails (9) are connected end to end.

7. The stepped pickling tank for circuit board recycling according to claim 1, characterized in that: The pickling frame (12) is provided with a snap-fit ​​frame (20) on its side. Limiting blocks (21) are provided on both sides of the snap-fit ​​frame (20). The pickling frame (12) is provided with a limiting groove (22) corresponding to the limiting block (21) on its side.

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