Auxiliary device for wet etching processing of PCB (Printed Circuit Board)

Abstract

The utility model relates to the technical field of circuit board wet etching, in particular to an auxiliary device for PCB (printed circuit board) wet etching processing, which comprises an etching pool, support cylinders are fixed on two sides in the etching pool, adjusting grooves are arranged in the support cylinders, support columns are inserted in the adjusting grooves in a sliding manner, and the support columns are arranged in the adjusting grooves. A mounting block is fixed to the top end of the supporting column. The device has the beneficial effects that the depth of a circuit board in the etching pool can be adjusted, the etching processing of the circuit board is facilitated, two circuit boards can be etched at the same time, the efficiency is high, and the circuit boards are convenient to take and place before and after the etching processing of the circuit boards; a circuit board is placed between the fixed clamping plate and the movable clamping plate from the side face of the placing plate, and the movable clamping plate and the fixed clamping plate stably clamp the circuit board through the telescopic elastic force of the spring, so that the circuit board is prevented from being separated from the placing plate in an etching pool, and safe and stable etching processing of the circuit board is assisted.

Description

Technical Field

[0001] The utility model relates to the technical field of wet etching of circuit boards, in particular to an auxiliary device for wet etching processing of PCB circuit boards. Background Art

[0002] Circuit boards are a type of component that is often used in circuit processing. Circuit boards can generally be called: ceramic circuit boards, alumina ceramic circuit boards, aluminum nitride ceramic circuit boards, circuit boards, PCB boards, aluminum substrates, high-frequency boards, thick copper boards, impedance boards, PCBs, ultra-thin circuit boards, ultra-thin circuit boards, printed (copper etching technology) circuit boards, etc. They are indispensable in the production of electronic products and are commonly used parts in electronic processing; circuit boards need to be etched during processing.

[0003] Wet etching is a technology that involves immersing the etching material in a corrosive solution for etching. The main factor affecting the etching material of the circuit board during wet etching is the etching rate. In layman's terms, the etching rate is the thickness of the material removed / the time used for etching. The etching rate is often affected by temperature, bubble agitation, and the number of etching batches of the corrosive solution. In addition, the etching rates of circuit boards in different batches and at different locations will also be different.

[0004] For example, the prior art Chinese patent publication number "CN117596785B" provides an auxiliary equipment for wet etching processing of PCB circuit boards, including an etching conveyor base equipped with a driving device, end plates are fixedly provided at both ends of the etching conveyor base, etching rate detection devices are provided at the four corners of the end plates, and lifting supports are provided between the end plates for positioning and supporting the circuit boards, and an adjusting motor is provided inside the etching conveyor base.

[0005] The device sets etching test plates that are consistent with the material of the PCB circuit board at the four corners of the etching conveying seat, blocks the photoelectric sensor through the etching test plates, and reacts the etching rate through the photoelectric sensor at all times after etching, so as to accurately control the etching efficiency of the PCB circuit board. By setting an adjusting motor, a supporting part and a joint control component, the PCB circuit board that has completed the predetermined depth of etching can be removed from the etching liquid in time, and the etching can be separated in time to avoid excessive etching and lateral etching, thereby improving the quality of the etching process.

[0006] The existing auxiliary device for wet etching of PCB circuit boards is troublesome to take and place the circuit boards in the etching tank, and the speed is slow. It is not convenient to place the circuit boards outside the etching tank in advance to save time. Moreover, when etching circuit boards of different sizes, it is not convenient to support and stabilize them, and they are easy to fall into the etching tank. Utility Model Content

[0007] The utility model aims to solve the shortcomings in the prior art that it is troublesome to take and put the circuit board in the etching pool, the speed is slow, and it is inconvenient to place the circuit board outside the etching pool in advance to save time, and proposes an auxiliary device for wet etching processing of PCB circuit boards.

[0008] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0009] An auxiliary device for wet etching processing of a PCB circuit board is designed, comprising an etching pool, support cylinders are fixed on both sides of the interior of the etching pool, an adjustment groove is arranged inside the support cylinder, a support column is slidably inserted into the interior of the adjustment groove, a mounting block is fixed to the top of the support column, a limit strip is fixed to the bottom end of the mounting block and located at the outside of the etching pool, a first connecting hole is opened at the bottom end of the side of the limit strip, a second connecting hole is opened on the outside of the etching pool and located at the outside of the support cylinder, fastening bolts are inserted into the first connecting hole and the second connecting hole, a rotating rod is rotatably installed between the two mounting blocks, a motor is installed at one end of the rotating rod, a placement plate is fixed to the surface of the rotating rod, and a liquid hole is opened on the surface of the placement plate.

[0010] Furthermore, a fixed splint is fixed to the outer end of the placement plate, a first limit plate is fixed to the inner middle of the fixed splint, a guide hole is opened on the surface of the fixed splint and located at the outer side of the first limit plate, a connecting rod passes through the inside of the guide hole, a movable splint is fixed to the inner end of the connecting rod and located at the side of the placement plate, a second limit plate is fixed to the middle of the side of the movable splint, the outer end of the connecting rod is connected to a limit nut, and a spring is sleeved on the surface of the connecting rod and located between the guide hole and the limit nut.

[0011] Furthermore, the etching pool is a rectangular structure and is arranged horizontally, and the supporting tube is a rectangular structure and is located in the middle of the inner side of the etching pool, and its height is flush with the top of the etching pool.

[0012] Furthermore, the support column is a rectangular column structure and is vertically arranged, the mounting block is a rectangular structure and is horizontally arranged, and its outer end protrudes outward from the outside of the etching pool, and the limiting bar is a rectangular structure and is vertically slidably arranged on the outside of the etching pool and covers the outside of the second connecting hole.

[0013] Furthermore, the height of the limit bar is equal to the height of the support column, the second connecting hole is a threaded hole structure, and the depth is less than the wall thickness of the etching pool, and is distributed up and down in the middle of the outer side of the etching pool, and the limit bar is fastened to the etching pool by the fastening bolts.

[0014] Furthermore, the rotating rod is a cylindrical structure and is horizontally arranged at the top of the etching pool. The motor is installed on the outside of the mounting block. The placement plate is a rectangular plate-plate structure and is distributed in a cross shape on the surface of the rotating rod. The liquid holes are evenly distributed on the surface of the placement plate.

[0015] Furthermore, the fixing clamp is a long strip structure and is perpendicular to the plane of the placement plate. The first limiting plate is a long strip structure and is parallel to the surface of the placement plate and is aligned with the second limiting plates.

[0016] Furthermore, the connecting rod is a threaded rod structure, and is parallel to the placement plate and evenly distributed on the outside of the placement plate. The movable splint is a long strip plate structure, and is aligned and parallel to the fixed splint.

[0017] The utility model provides an auxiliary device for wet etching of a PCB circuit board, which has the following beneficial effects:

[0018] 1. In the etching pool, the utility model supports the installation block through the support tube and the limit bar, and the installation block can be moved up and down along the adjustment groove, and is connected through the limit bar, the first connecting hole, the second connecting hole and the fastening bolt, so as to adjust the height of the installation block and the placement plate, and then the depth of the circuit board in the etching pool can be adjusted, which is beneficial to the etching process of the circuit board. At the same time, four placement plates are fixed around the rotating rod, and the circuit board can be pre-clamped on both sides of the placement plate. With the rotation of the rotating rod, one placement plate goes deep into the etching pool, and two circuit boards can be etched at the same time, which is efficient and convenient for taking and placing the circuit boards before and after the etching process of the circuit boards.

[0019] 2. The utility model provides a fixed clamp and a movable clamp on both sides of the placement plate, and elastically connects them through a connecting rod and a spring, so that the position of the limit nut on the surface of the connecting rod can be adjusted, and then the movable clamp can be pulled along the connecting rod to place the circuit board between the fixed clamp and the movable clamp from the side of the placement plate, and the flexible force of the spring enables the movable clamp and the fixed clamp to stably clamp the circuit board, preventing the circuit board from detaching from the placement plate in the etching pool, thereby assisting the safe and stable etching processing of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 For this utility model Figure 1 The enlarged view of point B;

[0022] Figure 3 For this utility model Figure 1 Enlarged view of point C;

[0023] Figure 4 For this utility model Figure 1 A cross-sectional view of

[0024] Figure 5 For this utility model Figure 4 A magnified image of point A;

[0025] Figure 6 For this utility model Figure 1 Schematic diagram of the partial structure of the etching pool.

[0026] In the figure: 1. etching pool; 2. rotating rod; 3. placing plate; 4. connecting rod; 5. movable splint; 6. mounting block; 7. fixed splint; 8. second limit plate; 9. first limit plate; 10. spring; 11. limit nut; 12. support column; 13. adjusting groove; 14. support cylinder; 15. guide hole; 16. liquid hole; 17. second connecting hole; 18. fastening bolt; 19. limit strip; 20. first connecting hole; 21. motor. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Example 1

[0029] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , an auxiliary device for wet etching processing of a PCB circuit board shown in the figure comprises an etching pool 1, support cylinders 14 are fixed on both sides of the interior of the etching pool 1, an adjusting groove 13 is arranged inside the support cylinder 14, a support column 12 is slidably inserted inside the adjusting groove 13, a mounting block 6 is fixed to the top of the support column 12, a limiting strip 19 is fixed to the bottom end of the mounting block 6 and located at the outside of the etching pool 1, a first connecting hole 20 is opened at the bottom end of the side of the limiting strip 19, a second connecting hole 17 is opened on the outside of the etching pool 1 and located at the outside of the support cylinder 14, fastening bolts 18 are inserted into the first connecting hole 20 and the second connecting hole 17, a rotating rod 2 is rotatably installed between the two mounting blocks 6, a motor 21 is installed at one end of the rotating rod 2, a placement plate 3 is fixed to the surface of the rotating rod 2, and a liquid hole 16 is opened on the surface of the placement plate 3.

[0030] In the etching pool 1, the mounting block 6 is supported by the support tube 14 and the limit bar 19, and the mounting block 6 can be moved up and down along the adjustment groove 13, and connected by the limit bar 19, the first connecting hole 20, the second connecting hole 17 and the fastening bolt 18, so as to adjust the height of the mounting block 6 and the placement plate 3, and then the etching depth of the circuit board in the etching pool 1 can be adjusted, which is beneficial to the etching process of the circuit board; at the same time, four placement plates 3 are fixed around the rotating rod 2, and the circuit board can be pre-clamped on both sides of the placement plates 3. As the rotating rod 2 rotates, one placement plate 3 goes deep into the etching pool 1, and two circuit boards can be etched at the same time, which is efficient and convenient for taking and placing circuit boards before and after the etching process of the circuit boards.

[0031] The etching pool 1 is a rectangular structure and is arranged horizontally. The support tube 14 is a rectangular structure and is located in the middle of the inner side of the etching pool 1 , and its height is flush with the top of the etching pool 1 .

[0032] The support column 12 is a rectangular column structure and is vertically arranged. The mounting block 6 is a rectangular structure and is horizontally arranged, and its outer end protrudes outward from the outside of the etching pool 1. The limiting bar 19 is a rectangular structure and is vertically slidably arranged on the outside of the etching pool 1 and covers the outside of the second connecting hole 17.

[0033] The height of the limit bar 19 is equal to the height of the support column 12. The second connecting hole 17 is a threaded hole structure, and its depth is less than the wall thickness of the etching pool 1. It is distributed up and down in the middle of the outer side of the etching pool 1. The limit bar 19 is fastened to the etching pool 1 by the fastening bolts 18.

[0034] The rotating rod 2 is a cylindrical structure and is horizontally arranged at the top of the etching pool 1. The motor 21 is installed on the outside of the mounting block 6. The placement plate 3 is a rectangular plate structure and is distributed in a cross shape on the surface of the rotating rod 2. The liquid holes 16 are evenly distributed on the surface of the placement plate 3.

[0035] Example 2

[0036] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6, an auxiliary device for wet etching processing of a PCB circuit board shown in the figure comprises an etching pool 1, support cylinders 14 are fixed on both sides of the interior of the etching pool 1, an adjusting groove 13 is arranged inside the support cylinder 14, a support column 12 is slidably inserted inside the adjusting groove 13, a mounting block 6 is fixed to the top of the support column 12, a limiting strip 19 is fixed to the bottom end of the mounting block 6 and located at the outside of the etching pool 1, a first connecting hole 20 is opened at the bottom end of the side of the limiting strip 19, a second connecting hole 17 is opened on the outside of the etching pool 1 and located at the outside of the support cylinder 14, fastening bolts 18 are inserted into the first connecting hole 20 and the second connecting hole 17, a rotating rod 2 is rotatably installed between the two mounting blocks 6, a motor 21 is installed at one end of the rotating rod 2, a placement plate 3 is fixed to the surface of the rotating rod 2, and a liquid hole 16 is opened on the surface of the placement plate 3.

[0037] In the etching pool 1, the mounting block 6 is supported by the support tube 14 and the limit bar 19, and the mounting block 6 can be moved up and down along the adjustment groove 13, and connected by the limit bar 19, the first connecting hole 20, the second connecting hole 17 and the fastening bolt 18, so as to adjust the height of the mounting block 6 and the placement plate 3, and then the etching depth of the circuit board in the etching pool 1 can be adjusted, which is beneficial to the etching process of the circuit board; at the same time, four placement plates 3 are fixed around the rotating rod 2, and the circuit board can be pre-clamped on both sides of the placement plates 3. As the rotating rod 2 rotates, one placement plate 3 goes deep into the etching pool 1, and two circuit boards can be etched at the same time, which is efficient and convenient for taking and placing circuit boards before and after the etching process of the circuit boards.

[0038] A fixed clamp plate 7 is fixed to the outer end of the placement plate 3, a first limiting plate 9 is fixed to the inner middle of the fixed clamp plate 7, a guide hole 15 is opened on the surface of the fixed clamp plate 7 and located at the outer side of the first limiting plate 9, a connecting rod 4 passes through the inside of the guide hole 15, a movable clamp plate 5 is fixed to the inner end of the connecting rod 4 and located at the side of the placement plate 3, a second limiting plate 8 is fixed to the middle of the side of the movable clamp plate 5, the outer end of the connecting rod 4 is connected to the limiting nut 11, and a spring 10 is sleeved on the surface of the connecting rod 4 and located between the guide hole 15 and the limiting nut 11.

[0039] A fixed clamp 7 and a movable clamp 5 are provided on both sides of the placement plate 3, and are elastically connected by a connecting rod 4 and a spring 10. Therefore, the position of the limit nut 11 on the surface of the connecting rod 4 can be adjusted, and then the movable clamp 5 can be pulled along the connecting rod 4 to place the circuit board between the fixed clamp 7 and the movable clamp 5 from the side of the placement plate 3. The elastic force of the spring 10 allows the movable clamp 5 and the fixed clamp 7 to stably clamp the circuit board, preventing the circuit board from detaching from the placement plate 3 in the etching pool 1, thereby assisting the safe and stable etching processing of the circuit board.

[0040] The fixing clamping plate 7 is a long strip structure and is perpendicular to the plane of the placing plate 3 . The first limiting plate 9 is a long strip structure and is parallel to the surface of the placing plate 3 and is aligned with the second limiting plates 8 .

[0041] The connecting rod 4 is a threaded rod structure, and is parallel to the placement plate 3 and evenly distributed on the outside of the placement plate 3. The movable clamping plate 5 is a long strip plate structure, and is aligned and parallel to the fixed clamping plate 7.

[0042] Working method: In the etching pool 1, the mounting block 6 is supported by the support tube 14 and the limit bar 19, and the mounting block 6 can be moved up and down along the adjustment groove 13, and connected through the limit bar 19, the first connecting hole 20, the second connecting hole 17 and the fastening bolt 18, so as to adjust the height of the mounting block 6 and the placement plate 3, and then the etching depth of the circuit board in the etching pool 1 can be adjusted, which is beneficial to the etching process of the circuit board; at the same time, four placement plates 3 are fixed around the rotating rod 2, and the circuit board can be pre-clamped on both sides of the placement plate 3. As the rotating rod 2 rotates, one placement plate 3 goes deep into the etching pool 1, and two circuit boards can be etched at the same time, which is efficient, and it is convenient to take and put the circuit board before and after the etching process of the circuit board.

[0043] A fixed clamp 7 and a movable clamp 5 are provided on both sides of the placement plate 3, and are elastically connected by a connecting rod 4 and a spring 10. Therefore, the position of the limit nut 11 on the surface of the connecting rod 4 can be adjusted, and then the movable clamp 5 can be pulled along the connecting rod 4 to place the circuit board between the fixed clamp 7 and the movable clamp 5 from the side of the placement plate 3. The elastic force of the spring 10 allows the movable clamp 5 and the fixed clamp 7 to stably clamp the circuit board, preventing the circuit board from detaching from the placement plate 3 in the etching pool 1, thereby assisting the safe and stable etching processing of the circuit board.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An auxiliary device for wet etching of a PCB circuit board, comprising an etching pool (1), characterized in that: Support cylinders (14) are fixed on both sides of the etching pool (1), an adjustment groove (13) is provided inside the support cylinder (14), a support column (12) is slidably inserted into the adjustment groove (13), a mounting block (6) is fixed on the top of the support column (12), a limit strip (19) is fixed at the bottom of the mounting block (6) and located outside the etching pool (1), a first connection hole (20) is opened at the bottom of the side of the limit strip (19), a second connection hole (17) is opened at the outside of the etching pool (1) and located outside the support cylinder (14), fastening bolts (18) are inserted into the first connection hole (20) and the second connection hole (17), a rotating rod (2) is rotatably installed between the two mounting blocks (6), a motor (21) is installed at one end of the rotating rod (2), a placement plate (3) is fixed on the surface of the rotating rod (2), and a liquid hole (16) is opened on the surface of the placement plate (3).

2. The auxiliary device for wet etching of a PCB circuit board according to claim 1, characterized in that: A fixed clamp (7) is fixed to the outer end of the placement plate (3), a first limiting plate (9) is fixed to the middle of the inner side of the fixed clamp (7), a guide hole (15) is opened on the surface of the fixed clamp (7) and located on the outer side of the first limiting plate (9), a connecting rod (4) passes through the inside of the guide hole (15), a movable clamp (5) is fixed to the inner end of the connecting rod (4) and located on the side of the placement plate (3), a second limiting plate (8) is fixed to the middle of the side of the movable clamp (5), the outer end of the connecting rod (4) is connected to a limiting nut (11), and a spring (10) is sleeved on the surface of the connecting rod (4) and located between the guide hole (15) and the limiting nut (11).

3. The auxiliary device for wet etching of a PCB circuit board according to claim 1, characterized in that: The etching pool (1) is a rectangular structure and is arranged horizontally; the support tube (14) is a rectangular structure and is located in the middle of the inner side of the etching pool (1), and its height is flush with the top of the etching pool (1).

4. The auxiliary device for wet etching of a PCB circuit board according to claim 1, characterized in that: The support column (12) is a rectangular column structure and is arranged vertically; the mounting block (6) is a rectangular structure and is arranged horizontally, with its outer end protruding outward from the outside of the etching pool (1); the limiting strip (19) is a rectangular structure and is arranged vertically and slidably on the outside of the etching pool (1) and covers the outside of the second connection hole (17).

5. The auxiliary device for wet etching of a PCB circuit board according to claim 1, characterized in that: The height of the limiting strip (19) is equal to the height of the supporting column (12); the second connecting hole (17) is a threaded hole structure, and the depth is less than the wall thickness of the etching pool (1), and is distributed vertically in the middle of the outer side of the etching pool (1); the limiting strip (19) is fastened to the etching pool (1) by the fastening bolt (18).

6. The auxiliary device for wet etching of a PCB circuit board according to claim 1, characterized in that: The rotating rod (2) is a cylindrical structure and is horizontally arranged at the top of the etching pool (1); the motor (21) is installed on the outside of the mounting block (6); the placement plate (3) is a rectangular plate-plate structure and is distributed in a cross shape on the surface of the rotating rod (2); and the liquid holes (16) are evenly distributed on the surface of the placement plate (3).

7. The auxiliary device for wet etching of a PCB circuit board according to claim 2, characterized in that: The fixing clamping plate (7) is a long strip structure and is perpendicular to the plane of the placement plate (3); the first limiting plate (9) is a long strip structure and is parallel to the surface of the placement plate (3) and is aligned with the second limiting plates (8).

8. The auxiliary device for wet etching of a PCB circuit board according to claim 2, characterized in that: The connecting rod (4) is a threaded rod structure, and is parallel to the placement plate (3) and evenly distributed on the outer side of the placement plate (3). The movable clamping plate (5) is a long strip plate structure, and is aligned and parallel to the fixed clamping plate (7).

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