A protective device for circuit board etching

Abstract

This utility model discloses a protective device for circuit board etching, including an etching solution tank. A fixing frame is fixedly connected to the surface of the etching solution tank. A first electric push rod is arranged above the fixing frame. The first electric push rod is fixedly inserted through and extends to the bottom of the fixing frame. A clamping mechanism is fixedly connected to the bottom end of the first electric push rod. Two clamping plates are arranged inside the clamping mechanism. Multiple springs are fixedly connected to the opposite surfaces of the two clamping plates. A controller starts a second electric push rod to drive a top block to move. When the top block contacts the pressure sensor on the fixing plate, it converts the mechanical signal into an electrical signal and sends it to the controller. After processing, the controller controls the second electric push rod to stop moving. Through the contact of the top block, the position of the fixing plate can be limited, limiting the final position of the fixing plate and preventing the circuit board from shifting due to the fixing plate still being able to move after being clamped.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board etching technology, and in particular relates to a protective device for circuit board etching. Background Technology

[0002] Circuit board etching is a core process in PCB manufacturing that removes excess copper foil and forms fine lines. It requires the circuit board to be precisely fixed and immersed in etching solution for etching.

[0003] When etching circuit boards, it is necessary to fix the circuit boards. Traditional mechanical grippers rely on manual or rigid structures to control the clamping force. Excessive pressure can damage the circuit board, or insufficient pressure can cause the circuit board to shift during etching, resulting in damage to the circuit board during etching. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a protective device for circuit board etching. A fixing plate contacts the circuit board and applies initial pressure, forcing a spring to compress. The spring acts as a buffer, preventing damage to the circuit board due to its high rigidity when clamped, thus providing protection. After the circuit board is clamped and fixed, the controller activates a second electric push rod to move the top block. When the top block contacts the pressure sensor on the fixing plate, it converts the mechanical signal into an electrical signal, which is then sent to the controller. After processing, the controller stops the second electric push rod from moving. The contact of the top block limits the position of the fixing plate, preventing the circuit board from shifting due to the fixing plate still being able to move after clamping.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective device for circuit board etching, comprising an etching solution tank, a fixing frame fixedly connected to the surface of the etching solution tank, a first electric push rod disposed above the fixing frame, the first electric push rod being fixedly penetrated and extended to the bottom of the fixing frame, a clamping mechanism being fixedly connected to the bottom end of the first electric push rod, two clamping plates disposed inside the clamping mechanism, multiple springs being fixedly connected to the opposite surfaces of the two clamping plates, and fixing plates being fixedly connected to the multiple springs, multiple placement grooves being formed on the surface of the fixing plates, multiple drainage holes being formed inside the placement grooves, a second electric push rod being fixedly connected to the surface of the clamping plates, the second electric push rod being fixedly penetrated through the clamping plates, a top block being provided at the output end of the second electric push rod, a pressure sensor being provided at one end of the fixing plate corresponding to the spring position, the top block being positioned corresponding to the pressure sensor, sliding grooves being formed on both sides of the fixing frame, a slider being slidably connected inside the sliding grooves, a stabilizing rod being fixedly connected to the surface of the clamping plates, the stabilizing rod being movably penetrated through the slider.

[0006] Furthermore, two sliding rods are fixedly connected to one end of the fixed plate corresponding to the spring position, and the end of the sliding rod away from the fixed plate moves through the clamping plate.

[0007] Furthermore, a controller is provided on the fixing frame, and the controller is electrically connected to the first electric push rod, the clamping mechanism, the second electric push rod and the pressure sensor respectively through wires.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] The circuit board is clamped by two fixing plates. As the clamping plates continue to move, they contact the circuit board and apply initial pressure, forcing the spring to compress. The spring acts as a buffer, preventing damage to the circuit board due to its high rigidity during clamping, thus providing protection. After the circuit board is clamped and fixed, the controller activates the second electric push rod to move the top block. When the top block contacts the pressure sensor on the fixing plate, it converts the mechanical signal into an electrical signal, which is then sent to the controller. After processing, the controller stops the second electric push rod from moving. The contact of the top block limits the position of the fixing plate, preventing the circuit board from shifting due to the fixing plate still being able to move after clamping. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 This is a cross-sectional view of the overall structure of this utility model.

[0012] Figure 3 This is a schematic diagram of the clamping plate structure of this utility model.

[0013] In the figure: 1. Etching solution tank; 2. Fixing frame; 3. First electric push rod; 4. Clamping mechanism; 5. Clamping plate; 6. Slide groove; 7. Slider; 8. Stabilizing rod; 9. Spring; 10. Fixing plate; 11. Placement groove; 12. Drain hole; 13. Second electric push rod; 14. Pressure sensor. Detailed Implementation

[0014] 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, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0015] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0016] See appendix Figure 1-3 As shown, a protective device for etching circuit boards includes an etching solution tank 1. A fixing frame 2 is fixedly connected to the surface of the etching solution tank 1. A first electric push rod 3 is disposed above the fixing frame 2. The first electric push rod 3 is fixedly passed through and extends to the bottom of the fixing frame 2. A clamping mechanism 4 is fixedly connected to the bottom end of the first electric push rod 3. Two clamping plates 5 are disposed inside the clamping mechanism 4. Multiple springs 9 are fixedly connected to the opposite surfaces of the two clamping plates 5. Each of the multiple springs 9 is fixedly connected to a fixing plate 10. Multiple placement grooves 1 are formed on the surface of the fixing plate 10. 1. The interior of the placement groove 11 is provided with multiple drainage holes 12. The surface of the clamping plate 5 is fixedly connected to a second electric push rod 13, which is fixedly connected through the clamping plate 5. The output end of the second electric push rod 13 is provided with a top block. The fixed plate 10 is provided with a pressure sensor 14 at one end corresponding to the position of the spring 9. The top block and the pressure sensor 14 are positioned correspondingly. The two sides of the fixed frame 2 are respectively provided with sliding grooves 6. The sliding grooves 6 are slidably connected to the inside of the sliding grooves 6. The surface of the clamping plate 5 is fixedly connected to a stabilizing rod 8, which is movably connected through the sliding rod 7.

[0017] Two sliding rods are fixedly connected to one end of the fixed plate 10 corresponding to the position of the spring 9, and the end of the sliding rod away from the fixed plate 10 moves through the clamping plate 5.

[0018] A controller is installed on the fixed frame 2. The controller is electrically connected to the first electric push rod 3, the clamping mechanism 4, the second electric push rod 13 and the pressure sensor 14 through wires.

[0019] Working principle: The circuit board to be etched is placed in the placement slot 11 of the fixing plate 10. The shape of the placement slot 11 is adapted to the outline of the circuit board. The controller starts the clamping mechanism 4, which drives the two clamping plates 5 to move in opposite directions. The clamping plates 5 drive the spring 9 and the fixing plate 10 to move. The two fixing plates 10 clamp the circuit board. When the clamping plates 5 continue to move, the fixing plates 10 contact the circuit board and apply initial pressure, forcing the spring 9 to compress. The spring 9 acts as a buffer to prevent the circuit board from being damaged due to its high rigidity when clamped, thus providing protection. The sliding rod on the back of the fixing plate 10 passes through the clamping plate 5 and slides with it to ensure that the fixing plate 10 only moves horizontally, preventing the fixing plate 10 from tilting due to uneven force on the spring 9. After the circuit board is clamped and fixed, the controller starts the second electric push rod 13 to drive the top block to move. When the top block contacts the pressure sensor 14 on the fixing plate 10, it converts the mechanical signal into an electrical signal and sends it to the controller. The controller processes the signal and controls the second electric push rod 13 to move the top block. When the electric push rod 13 stops moving, the position of the fixing plate 10 can be limited by the contact of the top block, limiting the final position of the fixing plate 10 and preventing the circuit board from shifting due to the movement of the fixing plate 10 after clamping. The stabilizing rods 8 on both sides of the clamping plate 5 cooperate with the slider 7 in the slide groove 6 of the fixing frame 2 to maintain the stability of the clamping plate 5 during movement, reduce shaking, and ensure clamping accuracy. The controller starts the first electric push rod 3, driving the clamping mechanism 4 to descend, so that the circuit board is immersed in the etching solution in the etching solution tank 1 for etching. After the etching time is reached, the controller drives the first electric push rod 3 to rise, lifting the circuit board off the surface of the etching solution and letting it stay for a while to drain excess etching solution. Then, the second electric push rod 13 retracts, the top block separates from the pressure sensor 14, the clamping mechanism 4 drives the two clamping plates 5 to move in opposite directions, the spring 9 returns to its original position, the fixing plate 10 releases the circuit board, and the operator can take out the etched circuit board. The controller is a PLC controller, which is existing technology, and its working principle will not be described in detail here.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this utility model, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider 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 protective device for etching circuit boards, comprising an etching solution tank (1), a fixing frame (2) fixedly connected to the surface of the etching solution tank (1), a first electric push rod (3) disposed above the fixing frame (2), the first electric push rod (3) being fixedly penetrated and extended to the bottom of the fixing frame (2), and a clamping mechanism (4) fixedly connected to the bottom end of the first electric push rod (3), characterized in that: The clamping mechanism (4) has two clamping plates (5) inside. Multiple springs (9) are fixedly connected to the opposite surfaces of the two clamping plates (5). Multiple springs (9) are fixedly connected to a fixing plate (10). Multiple placement slots (11) are opened on the surface of the fixing plate (10). Multiple drainage holes (12) are opened inside the placement slots (11). A second electric push rod (13) is fixedly connected to the surface of the clamping plate (5). The second electric push rod (13) is fixedly inserted through the clamping plate (5). A top block is provided at the output end of the second electric push rod (13). A pressure sensor (14) is provided at one end of the fixing plate (10) corresponding to the position of the spring (9). The top block is positioned corresponding to the pressure sensor (14). Slide grooves (6) are opened on both sides of the fixing frame (2). A slider (7) is slidably connected inside the slide groove (6). A stabilizing rod (8) is fixedly connected to the surface of the clamping plate (5). The stabilizing rod (8) movably inserts through the slider (7).

2. The protective device for circuit board etching according to claim 1, characterized in that: Two sliding rods are fixedly connected to one end of the fixed plate (10) corresponding to the position of the spring (9), and the end of the sliding rod away from the fixed plate (10) moves through the clamping plate (5).

3. The protective device for circuit board etching according to claim 1, characterized in that: The fixed frame (2) is equipped with a controller, which is electrically connected to the first electric push rod (3), the clamping mechanism (4), the second electric push rod (13) and the pressure sensor (14) respectively via wires.

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