A flexible circuit board surface treatment device

Abstract

The application discloses a flexible circuit board surface treatment device and belongs to the field of flexible circuit boards. The device comprises a treatment box and a soaking groove arranged on the top of the treatment box. A cavity is arranged on the inner wall of the treatment box. A pushing assembly is arranged in the cavity and used for pushing the placing plate to move up and down. A sealing assembly is arranged on one side of the treatment box and used for sealing the soaking groove. A pressurizing assembly is arranged on the other side of the treatment box and used for pressurizing the soaking groove. The circuit board on the placing plate is moved out of the soaking groove and above the silver ion solution by the lifting assembly. The pressure of the sealing space of the soaking groove pressurized by the pressurizing assembly is used for extruding the circuit board and the silver ion solution attached to the circuit board. The repeated soaking and pressurizing between the circuit board and the silver ion solution can improve the solidification effect of the silver ion solution on the circuit board, reduce the solidification infiltration time and improve the infiltration solidification efficiency.

Description

Technical Field

[0001] This invention relates to the field of flexible circuit board technology, and more specifically to a flexible circuit board surface treatment device. Background Technology

[0002] Flexible circuit boards, also known as flexographic circuit boards or flexible printed circuit boards, are highly favored for their excellent properties such as light weight, thinness, and ability to be freely bent and folded. Flexible circuit boards are printed circuits with high reliability and excellent flexibility, made from polyester film or polyimide as the substrate. By embedding circuit designs into a flexible, thin plastic sheet, a large number of precision components can be packed into narrow and limited spaces, thus forming a flexible circuit. This type of circuit can be bent and folded at will, is lightweight, small in size, has good heat dissipation, and is easy to install, breaking through the limitations of traditional interconnection technologies. The materials that make up the structure of a flexible circuit are insulating film, conductors, and adhesives.

[0003] Immersion silvering is a step in the surface treatment process of circuit boards. It achieves submicron-level pure silver coating through a displacement reaction, preventing silver corrosion and eliminating silver migration problems. However, existing equipment places the circuit board directly into the reaction tank and removes it only after the surface of the circuit board is fully coated with silver. Such equipment is time-consuming and inefficient for immersion silvering; moreover, the silver thickness on the circuit board surface is uneven, affecting the production quality of the circuit board.

[0004] Application number CN111988922B discloses a surface treatment method for flexible circuit boards. A sliding groove is provided on the side wall of the vertical plate of an L-shaped upright plate to cooperate with a slider and an L-shaped connecting rod to fix a support plate. A groove is provided at the upper end of the support plate to cooperate with a fixing mechanism to fix the circuit board. After the circuit board is fixed, the support plate is controlled by the fixing plate, rotating handle, and gears and racks to move up and down in the immersion liquid in the immersion tank for vibration immersion. The vibration immersion liquid promotes full contact between the circuit board and the immersion plate, accelerating the immersion efficiency. Fixing mechanisms are provided at the edges of the ports on both sides of the upper end of the immersion tank. A limiting plate is set using the cooperation of a housing, mounting groove, spring, movable block, and connecting rod. The limiting plate fixes the circuit board in the immersion tank, preventing it from detaching during vibration immersion and ensuring its stability. A push-pull rod controls the movable block to fix and release the limiting plate on the circuit board. The operation is simple.

[0005] However, in the above application, repeatedly moving the circuit board in the silver ion solution to make the silver ion solution vibrate does not significantly improve the effect of the silver ion solution reacting and curing on the circuit board. At the same time, the reaction and curing time between the silver ion solution and the circuit board is long, and the manual repeated movement is labor-intensive. Summary of the Invention

[0006] To overcome the aforementioned technical problems, the present invention aims to provide a flexible circuit board surface treatment device. A lifting cylinder moves a circuit board placed in a placement tank downwards into a silver ion solution in an immersion tank. Then, a sealing assembly is activated. This assembly, via a sealing motor, lead screw, and moving block, moves a sealing plate to seal the immersion tank. Next, a pressure boosting pump in a pressurizing assembly pressurizes the sealed immersion tank. Finally, a lifting motor in a lifting assembly drives an eccentric wheel to rotate. The eccentric wheel's rotation pushes a top rod to lift the placement plate, ejecting it from the silver ion solution. Pressurized air in the upper space of the immersion tank further pressurizes the reaction between the circuit board and the silver ion solution, accelerating the curing process and improving the efficiency of the immersion reaction while reducing immersion time.

[0007] The objective of this invention can be achieved through the following technical solutions: A flexible circuit board surface treatment device includes a treatment box and an immersion tank formed on the top of the treatment box. A support frame is fixedly connected to the top of the treatment box, and a lifting cylinder is fixedly connected to the top of the support frame. The output end of the lifting cylinder passes through the support frame and is fixedly connected to a slide rod. A lifting frame is slidably connected to the bottom end of the slide rod. A slide groove is formed on one side of the immersion tank, and the lifting frame slides in the slide groove. A placement plate is connected to the bottom of the lifting frame, and a placement groove is formed on the placement plate. Fixing components are arranged on both sides of the placement groove. A fixing block is fixedly connected inside the lifting frame, and a sliding spring is provided on the top of the fixing block. The top end of the sliding spring abuts against the end of the slide rod that passes through the lifting frame and extends into the interior of the lifting frame. A cavity is formed in the inner wall of the treatment box, and a pushing component for pushing the placement plate up and down is arranged inside the cavity. A sealing component for sealing the immersion tank is arranged on one side of the treatment box, and a pressurizing component for pressurizing the immersion tank is arranged on the other side of the treatment box.

[0008] As a further aspect of the present invention: the pushing assembly includes a U-shaped frame fixedly connected to the inner wall of the bottom of the cavity, a rotating rod rotatably connected between the inner walls of the U-shaped frame, an eccentric wheel fixedly connected to the rotating rod, a lifting motor fixedly connected to one outer wall of the U-shaped frame, the output end of the lifting motor passing through the U-shaped frame and fixedly connected to the rotating rod, a push rod slidably connected between the top of the cavity and the soaking tank, the two ends of the push rod extending into the soaking tank and the cavity respectively, a sliding ball fixedly connected to the bottom end of the push rod, and the sliding ball being in contact with the outer wall of the eccentric wheel.

[0009] As a further aspect of the present invention: a support plate is fixedly connected to the top of the top rod, and a lifting spring is sleeved on the outer wall of the top rod, with the two ends of the lifting spring abutting against the inner wall of the cavity and the sliding ball, respectively.

[0010] As a further aspect of the present invention: the sealing assembly includes an L-shaped plate fixedly connected to one side of the processing box, a sealing motor fixedly connected to the side wall of the L-shaped plate, the output end of the sealing motor passing through the L-shaped plate and fixedly connected to a sealing screw, a moving block threadedly connected to the sealing screw, a sealing plate fixedly connected to one side of the top of the moving block, a groove being provided on one side of the processing box, and the sealing plate sliding on the groove.

[0011] As a further embodiment of the present invention: the pressurization assembly includes a fixed box fixedly connected to the side of the treatment box away from the sealing assembly, a pressurization pump fixedly connected inside the fixed box, an air outlet pipe fixedly connected to the output end of the pressurization pump, the end of the air outlet pipe away from the pressurization pump passing through the fixed box and the treatment box and communicating with the soaking tank, and a filter plate fixedly connected to the side of the fixed box away from the treatment box.

[0012] As a further embodiment of the present invention: the fixing component includes a baffle, and slots are provided on both sides of the placement groove. The baffle is fixedly connected inside the slots. A push rod is slidably connected to the baffle. A clamping block and a push plate are fixedly connected to both ends of the push rod, respectively. The clamping block is located at the opening of the slot. A fixing spring is provided inside the slot, and both ends of the fixing spring abut against the slot and the push plate, respectively.

[0013] As a further aspect of the present invention: a transmission rod is rotatably connected inside the lifting frame, one end of the transmission rod extends to the outer wall of the lifting frame and is fixedly connected to the placement plate, a tilting motor is fixedly connected to one side of the outer wall of the lifting frame, the output end of the tilting motor passes through the lifting frame and is connected to a transmission belt, and the other end of the transmission belt is connected to the transmission rod.

[0014] As a further aspect of the present invention, the placement tank has multiple sets of equidistant arrayed water outlet tanks inside.

[0015] As a further aspect of the present invention: a rectangular V-shaped groove is provided at the edge of the placement plate, and multiple sets of drainage grooves penetrating the placement plate are provided on the inner wall of the V-shaped groove.

[0016] The beneficial effects of this invention are: 1. In this invention, a lifting cylinder moves the circuit board placed in the placement tank downwards into the silver ion solution in the soaking tank. Then, the sealing assembly is activated. The sealing assembly, through a sealing motor, lead screw, and moving block, moves the sealing plate to seal the soaking tank. Then, the pressurizing pump in the pressurizing assembly pressurizes the sealed soaking tank. Then, the lifting motor in the lifting assembly drives the eccentric wheel to rotate. The rotation of the eccentric wheel pushes the top rod to lift the placement plate, pushing the placement plate out of the silver ion solution. The pressurized air in the upper space of the soaking tank pressurizes the reaction between the circuit board and the silver ion solution, accelerating the reaction and curing speed of the silver ion solution and the circuit board, improving the efficiency of the circuit board wetting reaction, and reducing the wetting time.

[0017] 2. In this invention, by starting the flipping motor, the flipping motor drives the placement plate to rotate alternately in both directions by 15° via the transmission belt and transmission rod, allowing excess silver ion solution on the circuit board in the placement tank to flow out from the circuit board, maintaining the flatness of the silver ion solution on the circuit board. At the same time, the V-shaped groove at the edge of the placement plate blocks the silver ion solution flowing out from the circuit board, and then discharges it through the drainage tank, preventing the silver ion solution from splashing onto the outside of the soaking tank. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the left-side structure of the present invention; Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 5 This is a schematic diagram of a portion of the pusher assembly of the present invention; Figure 6 This is a schematic diagram of the internal structure of the lifting frame of the present invention; Figure 7 This is a schematic diagram of the three-dimensional structure of the placement plate of the present invention; Figure 8 This is a top view of the placement plate structure in this invention; Figure 9 This is a partial cross-sectional view of the placement plate in this invention.

[0020] In the diagram: 1. Processing box; 101. Soaking tank; 1011. Slide chute; 102. Cavity; 103. Groove; 2. Support frame; 3. Lifting cylinder; 301. Slide rod; 4. Lifting frame; 401. Fixing block; 402. Sliding spring; 403. Tilting motor; 404. Transmission rod; 405. Transmission belt; 5. Placement plate; 501. Placement groove; 5011. Water outlet groove; 502. V-groove; 5021. Drainage groove; 503. Slot; 6. Pushing assembly; 601. C-shaped frame; 602. Rotating rod; 603. 604. Eccentric wheel; 605. Lifting motor; 606. Top rod; 607. Sliding ball; 608. Support plate; 609. Lifting spring; 700. Sealing assembly; 701. L-shaped plate; 702. Sealing motor; 703. Sealing screw; 704. Moving block; 705. Sealing plate; 806. Pressurization assembly; 801. Fixed box; 802. Pressurization pump; 803. Air outlet pipe; 804. Filter plate; 905. Fixing assembly; 901. Baffle; 902. Push rod; 903. Clamping block; 904. Push plate; 905. Fixed spring. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1-9 As shown, a flexible circuit board surface treatment device includes a treatment box 1 and an immersion tank 101 formed on the top of the treatment box 1. The immersion tank 101 is filled with a silver ion solution. A support frame 2 is fixedly connected to the top of the treatment box 1, and a lifting cylinder 3 is fixedly connected to the top of the support frame 2. The output end of the lifting cylinder 3 passes through the support frame 2 and is fixedly connected to a slide rod 301. A lifting frame 4 is slidably connected to the bottom end of the slide rod 301. A groove 1011 is formed on one side of the immersion tank 101, and the lifting frame 4 slides in the groove 1011. A placement plate 5 is connected to the bottom of the lifting frame 4, and a placement groove 501 is formed on the placement plate 5. Fixing components 9 are provided on both sides of the placement tank 501; a fixing block 401 is fixedly connected inside the lifting frame 4, and a sliding spring 402 is provided on the top of the fixing block 401. The top of the sliding spring 402 abuts against the end of the slide rod 301 that passes through the lifting frame 4 and extends into the interior of the lifting frame 4; a cavity 102 is opened in the inner wall of the treatment box 1, and a pushing component 6 for pushing the placement plate 5 to move up and down is provided inside the cavity 102; a sealing component 7 for sealing the soaking tank 101 is provided on one side of the treatment box 1, and a pressurizing component 8 for pressurizing the soaking tank 101 is provided on the other side of the treatment box 1.

[0023] like Figure 1 and Figure 5 As shown, the push assembly 6 includes a U-shaped frame 601 fixedly connected to the inner wall of the bottom of the cavity 102. The U-shaped frame 601 opens upwards, and a rotating rod 602 is rotatably connected between the inner walls of the U-shaped frame 601. An eccentric wheel 603 is fixedly connected to the rotating rod 602. A lifting motor 604 is fixedly connected to the outer wall of one side of the U-shaped frame 601. The output end of the lifting motor 604 passes through the U-shaped frame 601 and is fixedly connected to the rotating rod 602, driving the rotating rod 602 to drive the eccentric wheel 603 to rotate. A push rod is slidably connected between the top of the cavity 102 and the soaking tank 101. 605, the two ends of the push rod 605 extend into the soaking tank 101 and the cavity 102 respectively. The bottom end of the push rod 605 is fixedly connected to a sliding ball 6051. The sliding ball 6051 is in contact with the outer wall of the eccentric wheel 603. The eccentric wheel 603 pushes the push rod 605 upward to lift the placement plate 5. The top of the push rod 605 is fixedly connected to a support plate 6052. The outer wall of the push rod 605 is fitted with a lifting spring 606. The two ends of the lifting spring 606 abut against the inner wall of the cavity 102 and the sliding ball 6051 respectively, driving the push rod 605 downward.

[0024] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the sealing assembly 7 includes an L-shaped plate 701 fixedly connected to one side of the processing tank 1. A sealing motor 702 is fixedly connected to the side wall of the L-shaped plate 701. The output end of the sealing motor 702 passes through the L-shaped plate 701 and is fixedly connected to a sealing screw 703. A moving block 704 is threadedly connected to the sealing screw 703. A sealing plate 705 is fixedly connected to one side of the top of the moving block 704. A groove 103 is provided on one side of the processing tank 1. The sealing plate 705 slides on the groove 103 to seal the soaking tank 101.

[0025] like Figure 1 and Figure 3 As shown, the pressurization assembly 8 includes a fixed box 801 fixedly connected to the side of the treatment box 1 away from the sealing assembly 7. A pressurization pump 802 is fixedly connected inside the fixed box 801. An air outlet pipe 803 is fixedly connected to the output end of the pressurization pump 802. The end of the air outlet pipe 803 away from the pressurization pump 802 passes through the fixed box 801 and the treatment box 1 and is connected to the soaking tank 101 to pressurize the inside of the soaking tank 101. A filter plate 804 is fixedly connected to the side of the fixed box 801 away from the treatment box 1. The filter plate 804 filters the incoming air to prevent dust from entering the inside of the soaking tank 101.

[0026] like Figure 1 and Figure 9As shown, the fixing component 9 includes a baffle 901. The two opposite sides of the placement groove 501 are provided with slots 503. The baffle 901 is fixedly connected inside the slots 503. A push rod 902 is slidably connected to the baffle 901. The two ends of the push rod 902 are respectively fixedly connected to clamping blocks 903 and push plates 904. The clamping blocks 903 are located at the opening of the slots 503, and the upper end of the clamping blocks 903 is inclined to facilitate the circuit board to be inserted between the two sets of clamping blocks 903. A fixing spring 905 is provided inside the slots 503. The two ends of the fixing spring 905 abut against the slots 503 and the push plates 904 respectively.

[0027] like Figure 1 and Figure 6 As shown, a transmission rod 404 is rotatably connected inside the lifting frame 4. One end of the transmission rod 404 extends to the outer wall of the lifting frame 4 and is fixedly connected to the placement plate 5. A tilting motor 403 is fixedly connected to one side of the outer wall of the lifting frame 4. The output end of the tilting motor 403 passes through the lifting frame 4 and is connected to the transmission belt 405. The other end of the transmission belt 405 is connected to the transmission rod 404. The tilting motor 403 is a forward and reverse servo motor, which rotates forward 15° and reverses 15° alternately. Thus, the placement plate 5 is driven to rotate left and right and tilt through the transmission belt 405 and the transmission rod 404, so as to discharge the excess silver ion solution on the circuit board.

[0028] like Figure 1 , Figure 7 and Figure 8 As shown, the placement tank 501 has multiple sets of equidistantly arranged water outlet tanks 5011 inside, through which the silver ion solution in the placement tank 501 is discharged. The edge of the placement plate 5 has a rectangular V-shaped groove 502. The inner wall of the V-shaped groove 502 has multiple sets of drainage grooves 5021 that penetrate the placement plate 5. When the placement plate 5 is tilted, the silver ion solution on the circuit board flows into the V-shaped groove 502 and is then discharged into the soaking tank 101 through the drainage grooves 5021, thus preventing the silver ion solution from flowing out from the edge of the placement plate 5 to the outside of the soaking tank 101.

[0029] The working principle of this invention: The height of the silver ion solution inside the soaking tank 101 is greater than the height of the placement plate 5 plus the circuit board, allowing the circuit board to be completely soaked. When in use, the user places multiple circuit boards inside the placement slot 501 on the placement plate 5. The two ends of the circuit boards abut against the tops of the two clamping blocks 903, pushing the clamping blocks 903 to move to both sides. Simultaneously, the tension of the fixing spring 905 abuts against the push plate 904, causing the clamping blocks 903 on the push rod 902 to clamp and fix the circuit boards. Then, the lifting cylinder 3 is activated. The slide rod 301 at the output end of the lifting cylinder 3 drives the placement plate 5 downwards via the lifting frame 4. The lifting frame 4 slides into the slide groove 1011, the size of which is the same as the size of the lifting frame 4. The bottom of the lifting frame 4 is attached to the bottom of the slide 1011, so that the circuit board on the placement plate 5 is completely immersed in the silver ion solution in the soaking tank 101. Then, the sealing motor 702 in the sealing assembly 7 is started. The sealing motor 702 drives the sealing screw 703 to rotate. The moving block 704 threaded on the sealing screw 703 drives the sealing plate 705 to slide in the groove 103. The sealing plate 705 moves to the side of the soaking tank 101 away from the groove 103 and is attached to it, sealing the soaking tank 101. Then, the booster pump 802 is started. The booster pump 802 draws air from the outside and sends it into the sealed soaking tank 101 through the air outlet pipe 803, increasing the pressure in the space above the silver ion solution in the soaking tank 101. Then, the lifting motor 604 is started to lift... The motor 604 drives the rotating rod 602 to rotate, which in turn drives the eccentric wheel 603 to rotate. The rotating eccentric wheel 603 abuts against the sliding ball 6051 on the top rod 605, pushing the top rod 605 upward. The upward movement of the top rod 605 causes the support plate 6052 to abut against the bottom of the placement plate 5, pushing the placement plate 5 upward. The placement plate 5 drives the lifting frame 4 to slide up and down on the outer wall of the slide rod 301, causing the circuit board on the placement plate 5 to be removed from the silver ion solution. The pressure increased by the pressurizing component 8 in the sealed space of the soaking tank 101 squeezes the circuit board and the silver ion solution attached to it. Then, the eccentric wheel 603 drives the top rod 605 downward, and the tension of the sliding spring 402 pushes the lifting frame 4 downward. 4. The circuit board on the placement plate 5 is immersed in the silver ion solution again. By repeatedly immersing and pressurizing the circuit board and the silver ion solution, the curing effect of the silver ion solution on the circuit board is improved, the curing and wetting time is reduced, and the wetting and curing efficiency is improved. After the silver ion solution is attached, the sealing component 7 is activated to move the sealing plate 705 away from the immersion tank 101. Then, the lifting cylinder 3 is activated to move the placement plate 5 out of the silver ion solution. The flipping motor 403 is activated and rotates repeatedly in both directions at 15°. Through the transmission belt 405 and the transmission rod 404, the placement plate 5 is rotated and tilted in both directions, so that the excess silver ion solution on the circuit board on the placement plate 5 flows out of the circuit board, improving the flatness of the silver ion solution on the circuit board.

[0030] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A flexible circuit board surface treatment apparatus, comprising a treatment chamber (1) and an immersion tank (101) formed on the top of the treatment chamber (1), characterized in that, The top of the processing box (1) is fixedly connected to a support frame (2), the top of the support frame (2) is fixedly connected to a lifting cylinder (3), the output end of the lifting cylinder (3) passes through the support frame (2) and is fixedly connected to a slide rod (301), the bottom end of the slide rod (301) is slidably connected to a lifting frame (4), a slide groove (1011) is opened on one side of the soaking tank (101), the lifting frame (4) slides in the slide groove (1011), the bottom of the lifting frame (4) is connected to a placement plate (5), a placement groove (501) is opened on the placement plate (5), and fixing components (9) are provided on both sides of the placement groove (501). The lifting frame (4) is fixedly connected to a fixing block (401), and a sliding spring (402) is provided on the top of the fixing block (401). The top of the sliding spring (402) abuts against one end of the slide rod (301) that passes through the lifting frame (4) and extends into the interior of the lifting frame (4). The processing box (1) has a cavity (102) on its inner wall. Inside the cavity (102) is a push assembly (6) for pushing the placement plate (5) up and down. On one side of the processing box (1) is a sealing assembly (7) for sealing the soaking tank (101). On the other side of the processing box (1) is a pressurizing assembly (8) for pressurizing the soaking tank (101). The pressurization assembly (8) includes a fixed box (801) fixedly connected to the side of the treatment box (1) away from the sealing assembly (7). A pressurization pump (802) is fixedly connected inside the fixed box (801). An air outlet pipe (803) is fixedly connected to the output end of the pressurization pump (802). The end of the air outlet pipe (803) away from the pressurization pump (802) passes through the fixed box (801) and the treatment box (1) and is connected to the soaking tank (101). A filter plate (804) is fixedly connected to the side of the fixed box (801) away from the treatment box (1).

2. The flexible circuit board surface treatment device according to claim 1, characterized in that, The push assembly (6) includes a U-shaped frame (601) fixedly connected to the inner wall of the bottom of the cavity (102). A rotating rod (602) is rotatably connected between the inner walls of the U-shaped frame (601). An eccentric wheel (603) is fixedly connected to the rotating rod (602). A lifting motor (604) is fixedly connected to the outer wall of one side of the U-shaped frame (601). The output end of the lifting motor (604) passes through the U-shaped frame (601) and is fixedly connected to the rotating rod (602). A push rod (605) is slidably connected between the top of the cavity (102) and the soaking tank (101). The two ends of the push rod (605) extend into the soaking tank (101) and the cavity (102) respectively. A sliding ball (6051) is fixedly connected to the bottom end of the push rod (605). The sliding ball (6051) is in contact with the outer wall of the eccentric wheel (603).

3. The flexible circuit board surface treatment device according to claim 2, characterized in that, The top of the top rod (605) is fixedly connected to a support plate (6052), and a lifting spring (606) is sleeved on the outer wall of the top rod (605). The two ends of the lifting spring (606) abut against the inner wall of the cavity (102) and the sliding ball (6051) respectively.

4. The flexible circuit board surface treatment device according to claim 1, characterized in that, The sealing assembly (7) includes an L-shaped plate (701) fixedly connected to one side of the processing box (1). A sealing motor (702) is fixedly connected to the side wall of the L-shaped plate (701). The output end of the sealing motor (702) passes through the L-shaped plate (701) and is fixedly connected to a sealing screw (703). A moving block (704) is threaded onto the sealing screw (703). A sealing plate (705) is fixedly connected to one side of the top of the moving block (704). A groove (103) is provided on one side of the processing box (1). The sealing plate (705) slides on the groove (103).

5. The flexible circuit board surface treatment apparatus according to claim 1, characterized in that, The fixing component (9) includes a baffle (901), and slots (503) are provided on both sides of the placement slot (501). The baffle (901) is fixedly connected inside the slot (503). A push rod (902) is slidably connected on the baffle (901). A clamping block (903) and a push plate (904) are fixedly connected to both ends of the push rod (902). The clamping block (903) is located at the opening of the slot (503). A fixing spring (905) is provided inside the slot (503). The two ends of the fixing spring (905) abut against the slot (503) and the push plate (904) respectively.

6. The flexible circuit board surface treatment apparatus according to claim 1, characterized in that, The lifting frame (4) is rotatably connected to a transmission rod (404). One end of the transmission rod (404) extends to the outer wall of the lifting frame (4) and is fixedly connected to the placement plate (5). A flip motor (403) is fixedly connected to one side of the outer wall of the lifting frame (4). The output end of the flip motor (403) passes through the lifting frame (4) and is connected to a transmission belt (405). The other end of the transmission belt (405) is connected to the transmission rod (404).

7. The flexible circuit board surface treatment apparatus according to claim 1, characterized in that, The placement tank (501) has multiple sets of equidistant array water outlet tanks (5011) inside.

8. The flexible circuit board surface treatment apparatus according to claim 1, characterized in that, The placement plate (5) has a rectangular V-shaped groove (502) at its edge, and the inner wall of the V-shaped groove (502) has multiple drainage grooves (5021) that penetrate the placement plate (5).

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