Device for recycling micro-etching liquid and recycling copper of micro-etching liquid

Abstract

The utility model discloses a micro-etching liquid cyclic regeneration and copper recovery device which comprises a micro-etching tank, a waste liquid recovery barrel, an electrolytic tank, a regenerated liquid recovery barrel and a micro-etching liquid blending barrel which are sequentially communicated through a pipeline with a pump, the micro-etching liquid blending barrel is communicated with the micro-etching tank through a pipeline with a pump, and the copper recovery device is arranged on the side edge of the electrolytic tank. When the first electric push rod in the copper recovery device is arranged to drive the push block to extrude the cathode plate, the surface of the cathode plate can be bent, a crystallization copper plate and the cathode plate can be conveniently pried and separated, then the second electric push rod drives the scraper knife to be inserted between the copper plate and the cathode plate, and the copper plate can be shoveled when the scraper knife moves from top to bottom. Therefore, the effect of rapidly stripping the crystal copper plates on the two sides of the cathode plate is achieved, copper recovery is effectively facilitated, and the stripping and recovery efficiency of copper is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of micro-etching liquid recycling and regeneration, in particular to a micro-etching liquid recycling and regeneration device and copper recycling device. Background Art

[0002] Micro-etching liquid is a liquid used for etching of printed circuit boards. As the etching process proceeds, the excess copper on the PCB is corroded and removed, and the copper concentration in the solution increases, causing the etching efficiency of the etching liquid to gradually decrease. At this time, the etching liquid becomes waste liquid and is discharged. However, the etching waste liquid contains a large amount of copper ions, and direct discharge causes greater pollution. Therefore, electrolytic removal of oxidants - electrodeposition copper process is often used to treat micro-etching waste liquid, thereby reducing the copper ion concentration in the micro-etching waste liquid, so that the micro-etching waste liquid can be recycled.

[0003] When the micro-etching solution is used for copper electrodeposition, copper powder will adhere to the cathode plate of the electrolytic cell. After the electrolysis is completed, the crystallized copper on the cathode plate needs to be stripped off from the cathode plate for recycling. However, the current manual operation of copper stripping and recycling is cumbersome and difficult, resulting in low recycling efficiency.

[0004] Therefore, we propose a micro-etching solution recycling and copper recovery device to solve the above problems. Utility Model Content

[0005] The utility model aims to provide a micro-etching solution recycling and copper recovery device to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A micro-etching liquid circulation and regeneration device comprises a micro-etching tank, a waste liquid recovery barrel, an electrolytic tank, a regeneration liquid recovery barrel and a micro-etching liquid preparation barrel, wherein the micro-etching tank, the waste liquid recovery barrel, the electrolytic tank, the regeneration liquid recovery barrel and the micro-etching liquid preparation barrel are sequentially connected through a pipeline with a pump, and the micro-etching liquid preparation barrel is connected to the micro-etching tank through a pipeline with a pump.

[0008] A copper recovery device in a micro-etching liquid recycling and regeneration device includes a copper recovery device, which is arranged on the side of the electrolytic cell. The copper recovery device includes a base, and a bracket for supporting a cathode plate is fixed to the base symmetrically in front and back, and a double-headed screw rod is passed through and rotatably connected to the inside of each bracket, and the two double-headed screw rods are parallel to each other, and the double-headed screw rods are provided with left-right symmetrical cross beams, and the cross beams are threadedly connected to the double-headed screw rods, and an I-shaped frame is fixed to each cross beam rod, and push blocks are installed in the middle of opposite sides of the two I-shaped frames through electric push rod 1, and limit rods are fixed to the four corners of opposite sides of the I-shaped frames, and an inverted L-shaped frame is fixed to the I-shaped frame, and a scraper is installed on the inner top of the inverted L-shaped frame through electric push rod 2.

[0009] In a further embodiment, an auxiliary manipulator is further provided between the copper recovery device and the electrolytic cell, and the auxiliary manipulator is used to move the cathode plate between the electrolytic cell and the bracket.

[0010] In a further embodiment, a sprocket is coaxially fixed to the same end of the two double-headed screws, and a chain is sleeved between the two sprockets. The end of one of the double-headed screws is also coaxially connected to a servo motor.

[0011] In a further embodiment, rollers are rotatably mounted on opposite ends of the limit rod.

[0012] In a further embodiment, conveyor belts are installed on both sides of the base, a pair of parallel rotating rods are rotatably connected between the two brackets, and a support plate is fixed on the rotating rods. When the support plate is rotated to be parallel, the upper surface of the support plate is flush with the upper surface of the conveyor belt.

[0013] In a further embodiment, one end of the two rotating rods passing through the side wall of the bracket is connected to a gear, and the two gears are meshed and connected to each other, and a servo motor 2 is coaxially connected to the shaft of one of the gears.

[0014] In a further embodiment, a partition is provided between the two rotating rods, and the partition is fixed to the bracket.

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

[0016] The utility model arranges an electric push rod in the copper recovery device to drive the push block to squeeze the cathode plate, which can cause the surface of the cathode plate to bend, thereby facilitating the prying and separation between the crystallized copper plate and the cathode plate, and then drives the scraper to be inserted between the copper plate and the cathode plate through the electric push rod. The copper plate can be scraped apart when moving from top to bottom, thereby achieving the effect of quickly stripping the crystallized copper plates on both sides of the cathode plate, which not only effectively facilitates the recovery of copper, but also helps to improve the stripping and recovery efficiency of copper. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a recycling system for the micro-etching solution of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the copper recovery device of the utility model;

[0019] Figure 3 This is a schematic diagram of the front view structure of the copper recovery device of the utility model;

[0020] Figure 4 This is a schematic diagram of the partially cutaway structure of the copper recovery device of the utility model after the inverted L frame is removed;

[0021] Figure 5 For this utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0022] Figure 6 This is a schematic diagram of the installation structure of the limit rod and the roller of the utility model.

[0023] In the figure: 1. micro-etching tank; 2. waste liquid recovery barrel; 3. electrolytic cell; 4. regeneration liquid recovery barrel; 5. micro-etching liquid mixing barrel; 6. pipeline with pump; 7. copper recovery device; 701. base; 702. bracket; 703. double-headed screw; 7031. servo motor one; 7032. sprocket; 7033. chain; 704. crossbeam; 705. I-beam; 706. electric push rod one; 707. push block; 708. limit rod; 7081. roller; 709. inverted L frame; 710. electric push rod two; 711. scraper; 712. rotating rod; 7121. gear; 7122. servo motor two; 713. pallet; 714. conveyor belt; 715. partition. DETAILED DESCRIPTION

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood by specific circumstances.

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1 A micro-etching liquid recycling and regeneration device comprises a micro-etching tank 1, a waste liquid recovery barrel 2, an electrolytic tank 3, a regeneration liquid recovery barrel 4 and a micro-etching liquid preparation barrel 5. The micro-etching tank 1 and the waste liquid recovery barrel 2, the waste liquid recovery barrel 2 and the electrolytic tank 3, the electrolytic tank 3 and the regeneration liquid recovery barrel 4, the regeneration liquid recovery barrel 4 and the micro-etching liquid preparation barrel 5, and the micro-etching liquid preparation barrel 5 and the micro-etching tank 1 are all connected in sequence through a pump pipeline 6. The micro-etching tank 1 is used for PCB micro-etching. During micro-etching, copper ions in the micro-etching liquid gradually accumulate and increase. The waste liquid in the micro-etching tank 1 is first collected in the waste liquid recovery barrel 2, and then discharged into the electrolytic tank 3 for electrolysis, so that the copper ions in the waste liquid are crystallized on the cathode plate of the electrolytic tank 3. At this time, the copper ions in the electrolyte in the electrolytic tank 3 are significantly reduced and can be reused. The waste liquid is transported to the regeneration liquid recovery barrel 4 for unified collection, and then transported to the micro-etching liquid preparation barrel 5 for preparation, so as to form a new usable micro-etching liquid, and then transported to the micro-etching tank 1 for micro-etching.

[0028] See also Figure 2-4A copper recovery device in a micro-etching liquid recycling device includes a copper recovery device 7 for stripping a crystallized copper plate on a cathode plate in an electrolytic cell 3. The copper recovery device 7 is arranged on the side of the electrolytic cell 3. The copper recovery device 7 includes a base 701, and a bracket 702 for supporting the cathode plate is symmetrically fixed on the base 701. A card slot is provided on the bracket 702, so that the hanger of the cathode plate can be positioned in the card slot. A double-headed screw 703 is penetrated and rotatably connected to the inside of each bracket 702. The two ends of the double-headed screw rod 703 face the left and right sides respectively, and the two double-headed screw rods 703 are parallel to each other. Support side plates are provided at both ends of the double-headed screw rod 703 to facilitate the erection of the double-headed screw rod 703. The double-headed screw rod 703 is provided with a left-right symmetrical crossbeam rod 704. The two crossbeam rods 704 are respectively threadedly connected with different thread segments on the double-headed screw rod 703, so that when the double-headed screw rod 703 rotates, the two crossbeam rods 704 can move closer to or farther away from each other. An I-shaped frame 705 is fixed on each crossbeam rod 704, and The middle parts of the opposite sides of the two I-shaped frames 705 are both installed with push blocks 707 through electric push rods 1 706, and the four corners of the opposite sides of the I-shaped frames 705 are fixed with limit rods 708. An inverted L frame 709 is fixed on the I-shaped frame 705, and a scraper 711 is installed on the inner top of the inverted L frame 709 through electric push rods 2 710. When the cathode plate is stuck on the bracket 702, the two crossbeams 704 can be driven to approach each other. At this time, the limit rods 708 on both sides first contact the cathode plate to tighten and limit the suspended cathode plate. , and then start the electric push rod 1 706 to drive the push block 707 to squeeze the cathode plate, so that the cathode plate is bent, and the crystallized copper plate and the cathode plate can be pried apart and separated. In order to facilitate the prying of the crystallized copper plates on both sides of the cathode plate, the electric push rod 1 706 and the push block 707 on both sides are controlled to alternately squeeze the cathode plate, and then the electric push rod 2 710 drives the scraper 711 to be inserted between the copper plate and the cathode plate. When moving from top to bottom, the copper plate can be scraped apart, and the crystallized copper plate can be peeled off from the cathode plate, and the peeling efficiency is relatively high.

[0029] In order to facilitate the movement of the cathode plate, an auxiliary manipulator (not shown in the figure) is also arranged between the copper recovery device 7 and the electrolytic cell 3. The auxiliary manipulator can first take out the cathode plate in the electrolytic cell 3, and then move it above the bracket 702 to make it stuck on the bracket 702. After the crystallized copper plate is peeled off, the auxiliary manipulator can remove the peeled cathode plate from the bracket 702, which is convenient for operating a new cathode plate that needs to be stripped of copper.

[0030] See also Figure 3-4In order to ensure the movement stability of the two cross beams 704, a sprocket 7032 is coaxially fixed to the same end of the two double-headed screws 703, and a chain 7033 is sleeved between the two sprockets 7032. The end of one of the double-headed screws 703 is also coaxially connected to a servo motor 7031, and the main part of the servo motor 7031 is fixed to the side plate supporting the double-headed screw 703. Therefore, when the servo motor 7031 works to drive one of the double-headed screws 703 to rotate, under the transmission of the sprocket 7032 and the chain 7033, the other double-headed screw 703 can be synchronously driven to rotate, thereby ensuring the synchronization of the movement of the two ends of the two cross beams 704.

[0031] See also Figure 6 Considering that when the cathode plate is squeezed and bent, it is easy to have excessive friction with the limiting rod 708, therefore, rollers 7081 are rotatably installed on the opposite ends of the limiting rod 708. The rollers 7081 are in contact with the cathode plate through the rollers 7081, which ensures an effective limiting effect. At the same time, the curvature of the surface of the rollers 7081 and its rotation can reduce damage to the surface of the cathode plate.

[0032] See also Figure 2-5 In order to further facilitate the collection of the peeled copper plates, conveyor belts 714 are installed on both sides of the base 701. The conveyor belt 714 is driven to the side away from the bracket 702. A pair of parallel rotating rods 712 are rotatably connected between the two brackets 702, and a support plate 713 is fixed on the rotating rods 712. A partition plate 715 is also arranged between the two rotating rods 712, and the partition plate 715 is fixed to the bracket 702, so that the two copper plates peeled off from both sides of the cathode plate are blocked and separated by the partition plate 715 and fall on the two support plates 713 respectively. When the support plates 713 are rotated to be parallel, the upper surface of the support plate 713 is flush with the upper surface of the conveyor belt 714. At this time , the copper plate falls down and is in a horizontal state, and a part of the copper plate contacts the surface of the conveyor belt 714, and can be transmitted and moved outward under the drive of the conveyor belt 714. In order to facilitate the control of the synchronous reverse rotation of the two support plates 713, two rotating rods 712 are arranged, and one end of the two rotating rods 712 passing through the side wall of the bracket 702 is connected to a gear 7121, and the two gears 7121 are meshed and connected to each other. A servo motor 7122 is coaxially connected to the shaft of one of the gears 7121, and the main part of the servo motor 7122 is fixed to the base 701 through the mounting frame, so that it is driven by the servo motor 7122 and then driven by the two gears 7121, so that the two support plates 713 can be synchronously rotated in the opposite direction.

[0033] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A micro-etching liquid recycling device, comprising a micro-etching tank (1), a waste liquid recovery tank (2), an electrolytic tank (3), a regeneration liquid recovery tank (4) and a micro-etching liquid preparation tank (5), characterized in that: The micro-etching tank (1), the waste liquid recovery tank (2), the electrolytic tank (3), the regeneration liquid recovery tank (4) and the micro-etching liquid preparation tank (5) are sequentially connected via a pumped pipeline (6), and the micro-etching liquid preparation tank (5) is connected to the micro-etching tank (1) via a pumped pipeline (6).

2. A copper recovery device in the micro-etching solution recycling device according to claim 1, comprising a copper recovery device (7), characterized in that: The copper recovery device (7) is arranged on the side of the electrolytic cell (3), and comprises a base (701), and brackets (702) for supporting cathode plates are fixed on the base (701) in a front-to-back symmetrical manner, and a double-headed screw (703) is passed through and rotatably connected to the inside of each bracket (702), and the two double-headed screws (703) are parallel to each other, and the double-headed screws (703) are provided with left-right symmetrical crossbeams (704), and the crossbeams (704) and the double-headed screws are connected to each other. The screw rod (703) is threadedly connected, an I-shaped frame (705) is fixed on each crossbeam rod (704), and push blocks (707) are installed in the middle of the opposite sides of the two I-shaped frames (705) through electric push rod 1 (706), and limit rods (708) are fixed at the four corners of the opposite sides of the I-shaped frames (705), an inverted L-shaped frame (709) is fixed on the I-shaped frame (705), and a scraper (711) is installed on the inner top of the inverted L-shaped frame (709) through electric push rod 2 (710).

3. The copper recovery device in the micro-etching liquid recycling device according to claim 2, characterized in that: An auxiliary manipulator is also provided between the copper recovery device (7) and the electrolytic cell (3), and is used to move the cathode plate between the electrolytic cell (3) and the bracket (702).

4. The copper recovery device in the micro-etching liquid recycling device according to claim 2, characterized in that: A sprocket (7032) is coaxially fixed to the same end of the two double-headed screw rods (703), and a chain (7033) is sleeved between the two sprocket wheels (7032). The end of one of the double-headed screw rods (703) is also coaxially connected to a servo motor 1 (7031).

5. The copper recovery device in the micro-etching liquid recycling device according to claim 2, characterized in that: Rollers (7081) are rotatably mounted on opposite ends of the limiting rod (708).

6. The copper recovery device in the micro-etching liquid recycling device according to claim 2, characterized in that: Conveyor belts (714) are installed on both left and right sides of the base (701); a pair of parallel rotating rods (712) are rotatably connected between the two brackets (702); and a support plate (713) is fixed on the rotating rods (712); when the support plate (713) is rotated to be parallel, the upper surface of the support plate (713) and the upper surface of the conveyor belt (714) are flush with each other.

7. The copper recovery device in the micro-etching liquid recycling device according to claim 6, characterized in that: One end of the two rotating rods (712) passing through the side wall of the bracket (702) is connected to a gear (7121), and the two gears (7121) are meshed and connected to each other, and a servo motor 2 (7122) is coaxially connected to the shaft of one of the gears (7121).

8. The copper recovery device in the micro-etching liquid recycling device according to claim 6, characterized in that: A partition plate (715) is also provided between the two rotating rods (712), and the partition plate (715) is fixed to the bracket (702).

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