Filtering turnover disc for etching printed circuit board

Abstract

The utility model provides a filtering turnover disc for etching a printed circuit board, which comprises a circuit board turnover disc, an etching groove is arranged in the middle of the upper end of the circuit board turnover disc, a supporting fence is arranged in the middle of the groove wall of the etching groove, and the upper part of the left end of the circuit board turnover disc is fixedly connected with a limiting frame. A flow guide hopper is fixedly connected to the middle of the lower end of the circuit board turnover disc, a fixing mechanism is jointly and fixedly connected between the left portion and the right portion of the lower end of the circuit board turnover disc, the front end and the rear end of the fixing mechanism are each fixedly connected with two supporting legs, and the upper ends of the four supporting legs are all fixedly connected with the lower end of the circuit board turnover disc. According to the filtering turnover disc for etching of the printed circuit board, etching liquid can be further filtered and recycled through the arrangement of the filtering groove and the recycling mechanism, the filtering effect is enhanced, oil absorption cotton paper can be firmly fixed through the arrangement of the fixing mechanism, rapid replacement can be achieved, and the filtering turnover disc is suitable for being widely used.

Description

Technical Field

[0001] The utility model relates to a filtering turnover tray for printed circuit board etching, and belongs to the field of printed circuit board etching. Background Art

[0002] A circuit board can be called a printed circuit board or a printed wiring board. A circuit board is composed of integrated circuits, crystal oscillators, trimming capacitors, and printed circuit boards. The names of circuit boards include: ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, etc. Circuit boards miniaturize and visualize circuits, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layouts. A filtering turnover tray is used in the etching process of printed circuit boards.

[0003] In a Chinese patent with the publication number CN218573042U, a filtering turnover tray for printed circuit board etching is mentioned. By operating a T-shaped grip to drive the rotation of a rotating rod on a bearing block, the rotating rod drives the relative movement of a movable block through a left-handed and right-handed thread during rotation. During the movement of the movable block, the pressing plate on the support rod presses and fixes the oil-absorbing cotton sheet on the oil-absorbing bottom plate through the rotational connection of a hinge and a hinge rod, avoiding the movement of the oil-absorbing cotton sheet and facilitating the replacement of the oil-absorbing cotton sheet. The operation is simple and convenient, and the practical performance is strong. However, in the prior art, the filtering turnover tray only filters the etching solution through the oil-absorbing cotton sheet, and the filtering effect on the etching solution is not good. Moreover, there are still some impurities in the etching solution, which will lead to poor activity of the etching solution and is not conducive to the full reuse of the etching solution. Therefore, we introduce a filtering turnover tray for printed circuit board etching. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a filtering turnover tray for printed circuit board etching, so as to solve the problems raised in the above background art. The filtering effect of the utility model is good, the reuse rate is high, it is easy to operate, and the practical performance is strong.

[0005] In order to achieve the above purpose, the utility model is realized through the following technical solutions:

[0006] A filtering turnover tray for printed circuit board etching, including a circuit board turnover tray. In the middle of the upper end of the circuit board turnover tray, an etching groove is provided. In the middle of the groove wall of the etching groove, a support fence is arranged. In the upper part of the left end of the circuit board turnover tray, a limit frame is fixedly connected. In the middle of the lower end of the circuit board turnover tray, a diversion hopper is fixedly connected. Between the left lower part and the right lower part of the lower end of the circuit board turnover tray, a fixing mechanism is fixedly connected together. At the front end and the rear end of the fixing mechanism, two support feet are fixedly connected, and the upper ends of the four support feet are fixedly connected with the lower end of the circuit board turnover tray. At the left lower part and the right lower part of the lower end of the fixing mechanism, connecting frames are fixedly connected. Between the opposite surfaces of the two connecting frames, a filtering groove is fixedly connected together. In the middle of the groove wall of the filtering groove, a filter plate is arranged. On the upper end of the filter plate, oil-absorbing cotton paper is placed. At the lower left part of the left end of the filtering groove, a liquid outlet pipe is inserted and fixedly connected. On the left part of the outer surface of the liquid outlet pipe, a reuse mechanism is threadedly connected.

[0007] Further, the reuse mechanism includes a liquid extraction pump. In the middle of the front end of the liquid extraction pump, a liquid extraction pipe is inserted and fixedly connected. And the other end of the liquid extraction pipe is inserted and fixedly connected with a filtering joint. And in the middle of the right end of the filtering joint, it is threadedly connected with the left part of the outer surface of the liquid outlet pipe. In the middle of the left end of the liquid extraction pump, an infusion pipe is inserted and fixedly connected. The other end of the infusion pipe is inserted and fixedly connected with a reuse spray head. And the lower part of the outer surface of the reuse spray head is clamped with the limit frame.

[0008] Further, both the liquid extraction pipe and the infusion pipe are arranged as flexible hoses. Inside the filtering joint, filter cotton is arranged.

[0009] Further, the lower end surface of the filtering groove is flush with the lower end surface of the support feet, and the filtering groove is located directly below the diversion hopper. The oil-absorbing cotton paper is arranged in a square plate structure.

[0010] Further, the fixing mechanism includes a diversion frame. At the left end and the right end of the diversion frame, support frames are fixedly connected. And the upper ends of the two support frames are fixedly connected with the lower end of the circuit board turnover tray. Between the middle parts of the opposite surfaces of the two support frames, a positive and negative lead screw is inserted and movably connected through a bearing. On the left part and the right part of the outer surface of the positive and negative lead screw, fixing frames are threadedly connected. In the middle of the right end of the positive and negative lead screw, a crank is fixedly connected.

[0011] Further, the upper parts of the outer surfaces of the diversion frame and the two fixing frames are all arranged in a V-shaped structure. The two support frames and the two fixing frames are all arranged in a T-shaped structure.

[0012] The beneficial effects of the utility model:

[0013] 1. By setting up a filtering tank and a recycling mechanism, the suction pump generates suction to extract the preliminarily filtered etching solution, enabling the etching solution to enter the filtering joint for secondary filtration. The filtering joint is detachable for replacing the filter cotton, which can enhance the filtering effect of the etching solution, effectively filter out impurities in the etching solution and improve its activity, and also facilitate the full recycling of the etching solution.

[0014] 2. By setting up a fixing mechanism, turning the crank handle drives the forward and reverse lead screw to rotate, causing the two fixing frames to move outward together under the guiding and limiting of the diversion frame, enabling the two fixing frames to cooperate with the filtering tank to firmly clamp and fix the oil-absorbing cotton paper, which can enhance the fixing effect of the oil-absorbing cotton paper. By reversing the rotation of the crank handle, the fixing of the oil-absorbing cotton paper can be quickly cancelled, thus realizing the quick replacement of the oil-absorbing cotton paper. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Other features, objectives and advantages of the present utility model will become more apparent by reading the detailed description of the non-restrictive embodiments with reference to the following drawings:

[0016] Figure 1 It is a schematic structural diagram of a filtering turnover tray for printed circuit board etching of the present utility model;

[0017] Figure 2 It is a schematic diagram of the filtering tank in a filtering turnover tray for printed circuit board etching of the present utility model;

[0018] Figure 3 It is a schematic diagram of the recycling mechanism in a filtering turnover tray for printed circuit board etching of the present utility model;

[0019] Figure 4 It is a schematic diagram of the fixing mechanism in a filtering turnover tray for printed circuit board etching of the present utility model;

[0020] In the figure: 1. Circuit board turnover tray; 2. Etching tank; 3. Support fence; 4. Limiting frame; 5. Diversion hopper; 6. Fixing mechanism; 61. Diversion frame; 62. Support frame; 63. Forward and reverse lead screw; 64. Fixing frame; 65. Crank handle; 7. Support feet; 8. Connecting frame; 9. Filtering tank; 10. Filter plate; 11. Oil-absorbing cotton paper; 12. Liquid outlet pipe; 13. Recycling mechanism; 131. Suction pump; 132. Suction pipe; 133. Filtering joint; 134. Liquid delivery pipe; 135. Recycling spray head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] To make the technical means, creative features, achieved objectives and functions of the present utility model easy to understand, the present utility model will be further elaborated below in conjunction with specific embodiments.

[0022] Please refer to Figures 1 to 3 , the present utility model provides a technical solution:

[0023] It includes a circuit board turnover tray 1. In the middle of the upper end of the circuit board turnover tray 1, an etching groove 2 is provided. In the middle of the groove wall of the etching groove 2, a support fence 3 is arranged. At the upper left part of the circuit board turnover tray 1, a limit frame 4 is fixedly connected. At the middle of the lower end of the circuit board turnover tray 1, a diversion hopper 5 is fixedly connected. Between the upper left part and the upper right part of the lower end of the circuit board turnover tray 1, a fixing mechanism 6 is fixedly connected together. At the front end and the rear end of the fixing mechanism 6, two support feet 7 are fixedly connected respectively, and the upper ends of the four support feet 7 are fixedly connected with the lower end of the circuit board turnover tray 1. At the lower left part and the lower right part of the lower end of the fixing mechanism 6, connecting frames 8 are fixedly connected respectively. Between the opposite surfaces of the two connecting frames 8, a filtering groove 9 is fixedly connected together. In the middle of the groove wall of the filtering groove 9, a filter plate 10 is arranged. On the upper end of the filter plate 10, an oil-absorbing cotton paper 11 is placed. At the lower left part of the left end of the filtering groove 9, a liquid outlet pipe 12 is inserted and fixedly connected. On the left part of the outer surface of the liquid outlet pipe 12, a reuse mechanism 13 is threadedly connected; The reuse mechanism 13 includes a liquid extraction pump 131. In the middle of the front end of the liquid extraction pump 131, a liquid extraction pipe 132 is inserted and fixedly connected, and the other end of the liquid extraction pipe 132 is inserted and fixedly connected with a filtering joint 133, and the middle of the right end of the filtering joint 133 is threadedly connected with the left part of the outer surface of the liquid outlet pipe 12. In the middle of the left end of the liquid extraction pump 131, an infusion pipe 134 is inserted and fixedly connected, and the other end of the infusion pipe 134 is inserted and fixedly connected with a reuse spray head 135, and the lower part of the outer surface of the reuse spray head 135 is clamped with the limit frame 4; Both the liquid extraction pipe 132 and the infusion pipe 134 are arranged as flexible hoses, which is beneficial to the movement of the reuse spray head 135 and the filtering joint 133. A filter cotton is arranged inside the filtering joint 133, and the etching solution can be further filtered through the filter cotton; The lower end surface of the filtering groove 9 is flush with the lower end surface of the support feet 7, so that the filtering groove 9 also contacts the ground to assist in supporting the circuit board turnover tray 1, and the filtering groove 9 is located directly below the diversion hopper 5. The oil-absorbing cotton paper 11 is arranged in a square plate structure, so that the filtered impurities are all accumulated in the oil-absorbing cotton paper 11 and are not easy to spill out.

[0024] Specific implementation manner: The etching solution used in the etching process of the circuit board can flow through the guiding of the guiding hopper 5 and the guiding frame 61 and enter the oil-absorbing cotton paper 11 in the filtering tank 9. The oil-absorbing cotton paper 11 can filter and absorb impurities such as oil stains and suspended matters contained in the etching solution. The filtered etching solution then flows through the filter plate 10 to the bottom of the filtering tank 9. When it is necessary to reuse the etching solution, the reuse spray head 135 can be first removed from the limiting frame 4, and then the liquid extraction pump 131 is started to generate suction, so that the liquid outlet pipe 12 extracts the etching solution preliminarily filtered in the filtering tank 9, and the etching solution enters the filtering joint 133 and is filtered again through the filtering cotton therein. Moreover, the filtering joint 133 can be detached from the liquid outlet pipe 12, which is convenient for replacing the filtering cotton in the filtering joint 133, further strengthening the filtering effect on the etching solution, effectively filtering out the impurities in the etching solution and improving its activity. Finally, the filtered filtering joint 133 is input into the reuse spray head 135 through the liquid delivery pipe 134 and sprayed out, which is convenient for the full reuse of the etching solution.

[0025] Please refer to Figure 4 , the fixing mechanism 6 includes a guiding frame 61. Both the left end and the right end of the guiding frame 61 are fixedly connected with support frames 62, and the upper ends of the two support frames 62 are fixedly connected with the lower end of the circuit board turnover tray 1. A positive and reverse lead screw 63 is jointly inserted and movably connected between the middle parts of the opposite surfaces of the two support frames 62 through bearings. Both the left part of the outer surface and the right part of the outer surface of the positive and reverse lead screw 63 are threadedly connected with fixing frames 64. The middle part of the right end of the positive and reverse lead screw 63 is fixedly connected with a crank 65; The upper parts of the outer surfaces of the guiding frame 61 and the two fixing frames 64 are all set as V-shaped structures, so that the guiding frame 61 plays a limiting role on the two fixing frames 64, improving the stability of the two fixing frames 64. Both the two support frames 62 and the two fixing frames 64 are set as T-shaped structures, which can improve the stability of the two support frames 62 and also increase the contact area between the two fixing frames 64 and the oil-absorbing cotton paper 11, strengthening the fixing effect.

[0026] Specific implementation manner: By rotating the crank 65 to drive the positive and reverse lead screw 63 to rotate, the two fixing frames 64 move stably towards the middle together under the guiding and limiting of the guiding frame 61 to cancel the fixation of the oil-absorbing cotton paper 11, and the used oil-absorbing cotton paper 11 can be quickly taken out of the filtering tank 9 to realize the quick replacement of the oil-absorbing cotton paper 11. Moreover, the square plate-structured oil-absorbing cotton paper 11 can effectively collect impurities, making it not easy for the impurities to spill out. Then, a new oil-absorbing cotton paper 11 is placed in the filtering tank 9, and the oil-absorbing cotton paper 11 is supported by the filter plate 10. Then, the crank 65 is rotated in the reverse direction to drive the two fixing frames 64 to move outward, so that the two fixing frames 64 cooperate with the filtering tank 9 to clamp and fix the oil-absorbing cotton paper 11 firmly, thereby strengthening the fixing effect on the oil-absorbing cotton paper 11 and also improving the practicability.

[0027] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A filter turntable for etching a printed circuit board, comprising a circuit board turntable (1), characterized in that: An etching groove (2) is provided in the middle of the upper end of the circuit board turnover plate (1), a supporting fence (3) is provided in the middle of the groove wall of the etching groove (2), a limiting frame (4) is fixedly connected to the upper left end of the circuit board turnover plate (1), a flow guide bucket (5) is fixedly connected to the middle of the lower end of the circuit board turnover plate (1), a fixing mechanism (6) is fixedly connected between the lower left end and the lower right end of the circuit board turnover plate (1), the front end and the rear end of the fixing mechanism (6) are both fixedly connected to two supporting feet (7), and the upper ends of the four supporting feet (7) are fixedly connected to the upper ends of the four supporting feet (7). Both are fixedly connected to the lower end of the circuit board turnover disk (1); the lower left and lower right parts of the fixing mechanism (6) are fixedly connected to a connecting frame (8); a filter tank (9) is fixedly connected between the opposite surfaces of the two connecting frames (8); a filter plate (10) is provided in the middle of the tank wall of the filter tank (9); an oil-absorbing cotton paper (11) is placed on the upper end of the filter plate (10); a liquid outlet pipe (12) is inserted and fixedly connected to the lower left end of the filter tank (9); and a recycling mechanism (13) is threadedly connected to the left part of the outer surface of the liquid outlet pipe (12).

2. The filter turntable for etching a printed circuit board according to claim 1, characterized in that: The recycling mechanism (13) comprises a liquid extraction pump (131), a liquid extraction tube (132) is inserted and fixedly connected to the middle of the front end of the liquid extraction pump (131), and a filter joint (133) is inserted and fixedly connected to the other end of the liquid extraction tube (132), and the middle of the right end of the filter joint (133) is threadedly connected to the left part of the outer surface of the liquid outlet pipe (12), and a liquid infusion tube (134) is inserted and fixedly connected to the middle of the left end of the liquid extraction pump (131), and the other end of the liquid infusion tube (134) is inserted and fixedly connected to the recycling nozzle (135), and the lower part of the outer surface of the recycling nozzle (135) is clamped with the limit frame (4).

3. The filter turntable for etching a printed circuit board according to claim 2, characterized in that: The liquid extraction tube (132) and the liquid infusion tube (134) are both configured as elastic hoses, and filter cotton is disposed inside the filter joint (133).

4. The filter turntable for etching a printed circuit board according to claim 1, characterized in that: The lower end surface of the filter tank (9) is flush with the lower end surface of the support foot (7), and the filter tank (9) is located directly below the guide bucket (5), and the oil-absorbing cotton paper (11) is configured as a square disc structure.

5. The filter turntable for etching a printed circuit board according to claim 1, characterized in that: The fixing mechanism (6) comprises a guide frame (61), the left and right ends of the guide frame (61) are fixedly connected to a support frame (62), and the upper ends of the two support frames (62) are fixedly connected to the lower end of the circuit board turnover plate (1), and a positive and negative screw rod (63) is movably connected through a bearing between the middle parts of the opposite surfaces of the two support frames (62), and the left and right parts of the outer surfaces of the positive and negative screw rods (63) are both threadedly connected to a fixing frame (64), and the middle part of the right end of the positive and negative screw rods (63) is fixedly connected to a crank (65).

6. The filter turntable for etching a printed circuit board according to claim 5, characterized in that: The upper parts of the outer surfaces of the guide frame (61) and the two fixing frames (64) are both arranged as V-shaped structures, and the two support frames (62) and the two fixing frames (64) are both arranged as T-shaped structures.

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