An etching machine for producing a circuit board

Abstract

The utility model discloses an etching machine of production circuit board, including the box, the both sides of box are equipped with the through groove, and the through groove is fixed and is equipped with the rack, is equipped with the net format conveying belt in the rack, and the top surface perpendicular fixed multiple pairs of equidistance distribution's locating column of net format conveying belt, the top surface of every pair of locating column is connected with a u -shaped block, and the both sides symmetry of u -shaped block are connected with a pair of fixed part and slide, and the box is equipped with the drying part and etching part of left and right distribution, and the box is fixedly connected with the waste liquid groove, and the waste liquid groove is located below etching part, and the lateral surface of waste liquid groove is connected with a filter box. The utility model discloses through the additional sliding type fixed part, makes the u -shaped block and the locating column form two -way locking, prevents the u -shaped block to dump in the transportation process, ensures that circuit board maintains vertical posture in etching and drying process, improves the processing accuracy.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing technology, and in particular to an etching machine for producing circuit boards. Background Technology

[0002] Patent publication number CN221598259U discloses a circuit board surface etching device, including an etching box with openings at both ends. A mesh conveyor belt is installed inside a support frame, with one end of the mesh conveyor belt connected to a drive motor mounted on the support frame. Positioning posts are installed on the mesh conveyor belt, and circuit board positioning structures are connected to the positioning posts. An etching spraying mechanism is installed on one side of the etching box, and a waste collection structure communicating with the etching box is provided on the other side. A drying mechanism is connected to the end of the etching box away from the drive motor, which collects the used etching solution and filters the residue. Furthermore, after etching, the circuit board can be directly dried, avoiding the need for subsequent drying processes, simplifying the process, and improving production efficiency.

[0003] However, the U-shaped support frame in this patent is only connected to the grid conveyor belt through blind holes and positioning posts, lacking a fixing structure. This makes the U-shaped support frame prone to tipping over during transportation due to the lack of a fixing structure when the grid conveyor belt transports the U-shaped support frame. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an etching machine for producing circuit boards.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an etching machine for producing circuit boards, comprising a housing, through slots on both sides of the housing, a frame fixedly inserted through the through slots, a mesh conveyor belt inside the frame, multiple pairs of equidistant positioning posts vertically fixed to the top surface of the mesh conveyor belt, a U-shaped block snapped onto the top surface of each pair of positioning posts, a pair of fixing members symmetrically slidably connected to the two sides of the U-shaped block, drying components and etching components distributed on the left and right sides inside the housing, a waste liquid tank fixedly connected inside the housing, the waste liquid tank being located below the etching components, and a filter box connected to the side of the waste liquid tank.

[0006] As a further description of the above technical solution: A first discharge pipe is horizontally fixed to the side of the waste liquid tank, the first discharge pipe penetrates the box body, the filter box is fixedly connected to the end of the first discharge pipe, a second discharge pipe is fixedly connected to the side of the filter box, a sealing cap is threaded to the end of the second discharge pipe, the end of the sealing cap abuts against a sealing ring, the sealing ring is fixedly sleeved on the outer edge of the second discharge pipe, a cover plate is hinged to the top surface of the filter box, the cover plate is fixedly connected to the filter box through a limiting member, and multiple equidistantly distributed filter plates are slidably connected inside the filter box, the aperture of the multiple filter plates gradually decreases from the inside to the outside.

[0007] As a further description of the above technical solution: the fixing member includes a first pull block abutting against the side of the U-shaped block, a blind hole is opened on the bottom surface of the U-shaped block, the positioning post is inserted into the blind hole, a first countersunk hole is horizontally opened in the blind hole, a first pull rod is slidably inserted in the first countersunk hole, one end of the first pull rod is fixedly connected to the first pull block, and the other end is fixedly connected to the first positioning block, a first spring is sleeved on the outer edge of the first pull rod, a first positioning groove is opened on the side of the positioning post, the first positioning block is inserted into the first positioning groove, and two limiting plates are symmetrically fixed on the inner walls of both sides of the U-shaped block.

[0008] As a further description of the above technical solution: the etched part includes a liquid storage tank fixed to the side of the box body, a pump body fixedly connected to the top surface of the liquid storage tank, a feed pipe fixedly connected to the input end of the pump body, the feed pipe extending into the liquid storage tank, a delivery pipe fixedly connected to the output end of the pump body, the delivery pipe penetrating the box body, a nozzle fixedly connected to the end of the delivery pipe, the nozzle being located above the waste liquid tank, and a replenishment valve fixedly connected to the top surface of the liquid storage tank.

[0009] As a further description of the above technical solution: the drying component includes a fan hood fixed to the top surface of the chamber, a dustproof net fixedly connected inside the fan hood, an air inlet opened on the top surface of the chamber, the air inlet being located directly below the dustproof net, a plurality of fans fixedly connected inside the air inlet, a heating net provided below the fans, and the heating net being fixed inside the air inlet.

[0010] As a further description of the above technical solution: multiple pairs of equally spaced slots are provided in the filter box, and a filter plate is slidably connected in each pair of slots. Two rubber strips are symmetrically fixed to the inner wall of each slot, and the rubber strips abut against the two ends of the filter plate.

[0011] As a further description of the above technical solution: the limiting component includes two first fixing blocks symmetrically fixed on both sides of the cover plate. A second countersunk hole is opened on the inner side of the first fixing block. A second pull rod is slidably inserted in the second countersunk hole. One end of the second pull rod is fixedly connected to a second positioning block, and the other end is fixedly connected to a second pull block. A second spring is sleeved on the outer edge of the second pull rod. A second positioning groove is opened on the outer side of the filter box. The second positioning block is inserted into the second positioning groove. Two second fixing blocks are symmetrically hinged to the outside of the cover plate. The two second fixing blocks are symmetrically fixed on the outside of the filter box.

[0012] This utility model has the following beneficial effects:

[0013] 1. Compared with existing technologies, the etching machine for producing circuit boards adds a sliding fixing component to form a two-way lock between the U-shaped block and the positioning post, preventing the U-shaped block from tipping over during transportation, ensuring that the circuit board maintains a vertical posture during etching and drying, and improving processing accuracy.

[0014] 2. Compared with existing technologies, the etching machine for producing circuit boards uses a waste liquid tank in conjunction with a multi-stage filter box to achieve stepped filtration of the etching solution, effectively separating residues and recovering usable liquid, reducing waste; the filter plates are fixed by slots and rubber strips, making them easy to disassemble, clean or replace; the cover of the filter box uses a limiting component for quick opening and closing, facilitating cleaning of the filter plates; the nozzle, storage tank and pump body constitute an independent etching solution circulation system, and the replenishment valve allows for real-time addition of etching solution, making maintenance convenient. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the overall structure of an etching machine for producing circuit boards according to the present invention.

[0016] Figure 2 This utility model proposes an etching machine for producing circuit boards. Figure 1 Enlarged view of the structure at point A in the middle;

[0017] Figure 3 This utility model presents an overall structural diagram of the filter box of an etching machine for producing circuit boards.

[0018] Figure 4 This is a side view of the overall structure of an etching machine for producing circuit boards according to the present invention.

[0019] Figure 5 This is a main sectional view of the overall structure of an etching machine for producing circuit boards according to the present invention.

[0020] Figure 6 This is a side sectional view of the overall structure of an etching machine for producing circuit boards according to the present invention.

[0021] Figure 7 This is a main sectional view of the connection between the U-shaped block and the mesh conveyor belt of an etching machine for producing circuit boards, as proposed in this utility model.

[0022] Figure 8 This is a side sectional view showing the connection between the first fixing block and the filter box of an etching machine for producing circuit boards according to the present invention.

[0023] Legend:

[0024] 1. Housing; 2. Filter box; 3. Frame; 4. Mesh conveyor belt; 5. Through groove; 6. Air hood; 7. Dustproof net; 8. U-shaped block; 9. Limiting plate; 10. First pull block; 11. First discharge pipe; 12. First fixing block; 13. Cover plate; 14. Second fixing block; 15. Second discharge pipe; 16. Sealing cover; 17. Sealing ring; 18. Second pull block; 19. Conveying pipe; 20. Pump body; 21. Supplementing valve; 22. Liquid storage tank; 23. Nozzle; 24. Fan; 25. Heating grid; 26. Air inlet; 27. Waste liquid tank; 28. Filter plate; 29. ​​Blind hole; 30. First positioning groove; 31. First positioning block; 32. First spring; 33. First countersunk hole; 34. First pull rod; 35. Positioning post; 36. Second pull rod; 37. Second spring; 38. Second positioning block; 39. Second positioning groove; 40. Second countersunk hole. Detailed Implementation

[0025] 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.

[0026] Reference Figures 1 to 8This utility model provides an etching machine for producing circuit boards, comprising a housing 1, through slots 5 on both sides of the housing 1, a frame 3 fixedly inserted through the slots 5, a mesh conveyor belt 4 inside the frame 3, multiple pairs of equidistantly distributed positioning posts 35 vertically fixed to the top surface of the mesh conveyor belt 4, a U-shaped block 8 snapped onto the top surface of each pair of positioning posts 35, two limiting plates 9 symmetrically fixed to the inner walls of the two sides of the U-shaped block 8, a pair of fixing members symmetrically slidably connected to the two sides of the U-shaped block 8, drying parts and etching parts distributed on the left and right sides inside the housing 1, a waste liquid tank 27 fixedly connected inside the housing 1, the waste liquid tank 27 being located below the etching parts, a filter box 2 connected to the side of the waste liquid tank 27, a first discharge pipe 11 horizontally fixed to the side of the waste liquid tank 27, the first discharge pipe 11 penetrating... The filter box 2 is fixedly connected to the end of the first discharge pipe 11 through the box body 1. The second discharge pipe 15 is fixedly connected to the side of the filter box 2. The end of the second discharge pipe 15 is threadedly connected to the sealing cover 16. The end of the sealing cover 16 abuts against the sealing ring 17. The sealing ring 17 is fixedly sleeved on the outer edge of the second discharge pipe 15. The top surface of the filter box 2 is hinged to the cover plate 13. The cover plate 13 is fixedly connected to the filter box 2 through the limiting member. Multiple equally spaced filter plates 28 are slidably connected inside the filter box 2. The aperture of the multiple filter plates 28 gradually decreases from the inside to the outside. Multiple pairs of equally spaced slots are opened inside the filter box 2. A filter plate 28 is slidably connected in each pair of slots. Two rubber strips are symmetrically fixed on the inner wall of each slot. The rubber strips abut against the two ends of the filter plate 28.

[0027] The fastener includes a first pull block 10 that abuts against the side of the U-shaped block 8. A blind hole 29 is opened on the bottom surface of the U-shaped block 8. A positioning post 35 is inserted into the blind hole 29. A first countersunk hole 33 is opened horizontally in the blind hole 29. A first pull rod 34 is slidably inserted in the first countersunk hole 33. One end of the first pull rod 34 is fixedly connected to the first pull block 10, and the other end is fixedly connected to the first positioning block 31. A first spring 32 is sleeved on the outer edge of the first pull rod 34. A first positioning groove 30 is opened on the side of the positioning post 35. The first positioning block 31 is inserted into the first positioning groove 30.

[0028] The etched part includes a liquid storage tank 22 fixed to the side of the housing 1. A pump body 20 is fixedly connected to the top surface of the liquid storage tank 22. A feed pipe is fixedly connected to the input end of the pump body 20 and extends into the liquid storage tank 22. A delivery pipe 19 is fixedly connected to the output end of the pump body 20 and passes through the housing 1. A nozzle 23 is fixedly connected to the end of the delivery pipe 19 and is located above the waste liquid tank 27. A replenishment valve 21 is fixedly connected to the top surface of the liquid storage tank 22.

[0029] The drying unit includes a fan hood 6 fixed to the top surface of the chamber 1, a dustproof net 7 fixedly connected inside the fan hood 6, an air inlet 26 opened on the top surface of the chamber 1, the air inlet 26 is located directly below the dustproof net 7, multiple fans 24 are fixedly connected inside the air inlet 26, a heating net 25 is provided below the fans 24, and the heating net 25 is fixed inside the air inlet 26.

[0030] The limiting component includes two first fixing blocks 12 symmetrically fixed on both sides of the cover plate 13. A second countersunk hole 40 is opened on the inner side of the first fixing block 12. A second pull rod 36 is slidably inserted in the second countersunk hole 40. One end of the second pull rod 36 is fixedly connected to a second positioning block 38, and the other end is fixedly connected to a second pull block 18. A second spring 37 is sleeved on the outer edge of the second pull rod 36. A second positioning groove 39 is opened on the outer side of the filter box 2. The second positioning block 38 is inserted into the second positioning groove 39. Two second fixing blocks 14 are symmetrically hinged to the outside of the cover plate 13. The two second fixing blocks 14 are symmetrically fixed on the outside of the filter box 2.

[0031] Working principle: During use, the circuit board is inserted between the limiting plates 9 on both sides of the U-shaped block 8. Pressing the first pull block 10 causes the first positioning block 31 to engage with the first positioning groove 30 of the positioning post 35, thus locking the circuit board. The drive motor moves the mesh conveyor belt 4, bringing the circuit board below the nozzle 23. The pump body 20 draws etching liquid from the storage tank 22 and sprays it evenly onto the surface of the circuit board through the nozzle 23. The waste liquid falls into the waste liquid tank 27 and then enters the filter box 2 through the first discharge pipe 11. After being filtered by the multi-layer filter plate 28, the clean liquid is temporarily stored at the bottom of the filter box 2. The etched circuit board enters the drying area. The fan 24 purifies the air through the dustproof net 7 and then heats it with the heating net 25 to form hot air, which quickly dries the residual liquid on the surface of the circuit board.

[0032] When the filter plate 28 needs to be cleaned, pull the second pull block 18 to release the cover plate 13 limit, and the filter plate 28 can be taken out for cleaning; rotate the sealing cover 16 to discharge the waste liquid in the filter box 2, and the replenishment valve 21 is used to replenish the etching solution periodically to ensure continuous production.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An etching machine for producing circuit boards, comprising a housing (1), wherein through slots (5) are provided on both sides of the housing (1), characterized in that: A frame (3) is fixedly installed inside the through groove (5). A mesh conveyor belt (4) is installed inside the frame (3). Multiple pairs of equidistant positioning posts (35) are vertically fixed on the top surface of the mesh conveyor belt (4). A U-shaped block (8) is snapped onto the top surface of each pair of positioning posts (35). A pair of fixing members are symmetrically slidably connected on both sides of the U-shaped block (8). Drying parts and etching parts are arranged on the left and right sides inside the box (1). A waste liquid tank (27) is fixedly connected inside the box (1). The waste liquid tank (27) is located below the etching parts. A filter box (2) is connected to the side of the waste liquid tank (27).

2. The etching machine for producing circuit boards according to claim 1, characterized in that: The first discharge pipe (11) is horizontally fixed to the side of the waste liquid tank (27), and the first discharge pipe (11) passes through the box body (1). The filter box (2) is fixedly connected to the end of the first discharge pipe (11). The side of the filter box (2) is fixedly connected to the second discharge pipe (15). The end of the second discharge pipe (15) is threadedly connected to the sealing cap (16). The end of the sealing cap (16) abuts against the sealing ring (17). The sealing ring (17) is fixedly sleeved on the outer edge of the second discharge pipe (15). The top surface of the filter box (2) is hinged to the cover plate (13). The cover plate (13) is fixedly connected to the filter box (2) through a limiting member. Multiple equally spaced filter plates (28) are slidably connected inside the filter box (2). The aperture of the multiple filter plates (28) gradually decreases from the inside to the outside.

3. The etching machine for producing circuit boards according to claim 1, characterized in that: The fixing component includes a first pull block (10) abutting against the side of the U-shaped block (8), a blind hole (29) is opened on the bottom surface of the U-shaped block (8), the positioning post (35) is inserted into the blind hole (29), a first countersunk hole (33) is opened horizontally in the blind hole (29), a first pull rod (34) is slidably inserted in the first countersunk hole (33), one end of the first pull rod (34) is fixedly connected to the first pull block (10), and the other end is fixedly connected to the first positioning block (31). A first spring (32) is sleeved on the outer edge of the first pull rod (34), a first positioning groove (30) is opened on the side of the positioning post (35), the first positioning block (31) is inserted into the first positioning groove (30), and two limiting plates (9) are symmetrically fixed on the inner walls of both sides of the U-shaped block (8).

4. An etching machine for producing circuit boards according to claim 1, characterized in that: The etched part includes a liquid storage tank (22) fixed to the side of the housing (1), a pump body (20) fixedly connected to the top surface of the liquid storage tank (22), a feed pipe fixedly connected to the input end of the pump body (20), the feed pipe extending into the liquid storage tank (22), a delivery pipe (19) fixedly connected to the output end of the pump body (20), the delivery pipe (19) penetrating the housing (1), a nozzle (23) fixedly connected to the end of the delivery pipe (19), the nozzle (23) being located above the waste liquid tank (27), and a replenishment valve (21) fixedly connected to the top surface of the liquid storage tank (22).

5. An etching machine for producing circuit boards according to claim 1, characterized in that: The drying component includes a fan hood (6) fixed to the top surface of the box (1), a dustproof net (7) fixedly connected inside the fan hood (6), an air inlet (26) opened on the top surface of the box (1), the air inlet (26) is located directly below the dustproof net (7), a plurality of fans (24) fixedly connected inside the air inlet (26), a heating net (25) is provided below the fans (24), and the heating net (25) is fixed inside the air inlet (26).

6. An etching machine for producing circuit boards according to claim 2, characterized in that: The filter box (2) has multiple pairs of equally spaced slots. Each pair of slots is slidably connected to a filter plate (28). Two rubber strips are symmetrically fixed to the inner wall of each slot. The rubber strips abut against the two ends of the filter plate (28).

7. An etching machine for producing circuit boards according to claim 2, characterized in that: The limiting component includes two first fixing blocks (12) symmetrically fixed on both sides of the cover plate (13). A second countersunk hole (40) is opened on the inner side of the first fixing block (12). A second pull rod (36) is slidably inserted in the second countersunk hole (40). One end of the second pull rod (36) is fixedly connected to a second positioning block (38), and the other end is fixedly connected to a second pull block (18). A second spring (37) is sleeved on the outer edge of the second pull rod (36). A second positioning groove (39) is opened on the outer side of the filter box (2). The second positioning block (38) is inserted into the second positioning groove (39). Two second fixing blocks (14) are symmetrically hinged to the outer side of the cover plate (13). The two second fixing blocks (14) are symmetrically fixed on the outer side of the filter box (2).

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