A surface cleaning device for flexible circuit board production

Abstract

The utility model discloses a surface cleaning device for flexible circuit board production, including frame and conveyer belt, the middle part of frame is installed with conveyer belt, the top of frame is installed with cleaning box, the outside of cleaning box is installed with controller, the top of cleaning box is installed with cylinder, the fixed frame is fixed with the fixed frame of cylinder's protruding end, the middle part fixed mounting of fixed frame has motor. This surface cleaning device for flexible circuit board production conveyer belt sends into the cleaning box of flexible circuit board, and after infrared sensor detects that the circuit board is in position, and electric push rod promotes the positioning plate and fixes it, and cylinder drive motor and cleaning mechanism drop, and motor drives cleaning mechanism rotation and cleans the surface of circuit board, and dust fan passes through dust absorption pipe and dust absorption head and removes the dust and impurity of cleaning generation, and accurate positioning flexible circuit board realizes efficient cleaning to its surface, removes dust and impurity effectively, and guarantees flexible circuit board production quality.

Description

Technical Field

[0001] This utility model relates to the field of circuit board manufacturing technology, specifically to a surface cleaning device for flexible circuit board manufacturing. Background Technology

[0002] Flexible circuit boards are highly reliable and extremely flexible printed circuit boards made with polyimide or polyester film as the substrate; they are characterized by high wiring density, light weight, thinness, and good bending performance. However, existing flexible circuit boards still have certain problems during production: During the production of flexible circuit boards, their surfaces are easily contaminated with dust, impurities, and tiny particles generated during production. If these contaminants are not thoroughly cleaned, they will seriously affect the subsequent processing quality of the flexible circuit boards, such as causing defects like poor soldering and short circuits, thereby reducing the yield and reliability of the products.

[0003] In view of this, in-depth research was conducted on the above issues, which led to the creation of this case.

[0004] To address the aforementioned issues, innovative designs were implemented based on existing flexible circuit board production practices. Utility Model Content

[0005] The purpose of this invention is to provide a surface cleaning device for flexible circuit board production, in order to solve the problem mentioned in the background art that the surface of flexible circuit boards is easily contaminated with dust, impurities and tiny particles generated during the production process. If these contaminants are not thoroughly cleaned, they will seriously affect the subsequent processing quality of the flexible circuit boards, such as causing defects such as poor soldering and short circuits, thereby reducing the yield and reliability of the products.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A surface cleaning device for flexible circuit board production includes a frame and a conveyor belt. The conveyor belt is installed in the middle of the frame, and a cleaning box is installed above the frame. A controller is installed on the outside of the cleaning box, and a cylinder is installed above the cleaning box. A fixing frame is fixed to the extended end of the cylinder, and a motor is fixedly installed in the middle of the fixing frame. A drive shaft is movably connected to the output end of the motor, and a cleaning mechanism is provided at the end of the drive shaft. Two sets of electric push rods are symmetrically installed inside the cleaning box, and positioning plates are fixed to the extended ends of the electric push rods. Two sets of infrared sensors are symmetrically installed on the inner wall of the cleaning box. A vacuum fan is installed above the cleaning box, and a vacuum pipe is installed in the middle of the vacuum fan. A vacuum head is installed at the air inlet end of the vacuum pipe.

[0007] Using the above technical solution, the conveyor belt feeds the flexible circuit board into the cleaning box. After the infrared sensor detects that the circuit board is in place, the electric push rod pushes the positioning plate to fix it. The cylinder drives the motor and cleaning mechanism to descend. The motor drives the cleaning mechanism to rotate and clean the surface of the circuit board. At the same time, the vacuum fan sucks away the dust and impurities generated during cleaning through the vacuum pipe and vacuum head. The flexible circuit board is accurately positioned to achieve efficient cleaning of its surface, effectively remove dust and impurities, and ensure the production quality of the flexible circuit board.

[0008] Preferably, a fixing block is welded to the top of the frame, a knob is provided on one side of the fixing block, an adjusting screw is fixed to the end of the knob, and a limit plate is connected to the end of the adjusting screw by a bearing.

[0009] Using the above technical solution, rotating the knob drives the adjusting screw to rotate on the fixed block. Since the adjusting screw is connected to the bearing of the limiting plate, under the limiting action of the fixed block, the rotational motion of the adjusting screw is converted into the linear movement of the limiting plate. According to the different widths of the flexible circuit board, the position of the limiting plate can be adjusted to limit the circuit board on the conveyor belt and prevent it from shifting during the conveying and cleaning process.

[0010] Preferably, the adjusting screw passes through and is threadedly connected to the middle of the fixed block, and four sets of limiting plates are symmetrically arranged along the upper part of the frame.

[0011] Using the above technical solution, the adjusting screw passes through and is threadedly connected to the fixed block. When the adjusting screw is rotated, based on the transmission characteristics of the thread, the screw will make a linear forward and backward movement relative to the fixed block, thereby driving the limit plate connected to the bearing to move. The four sets of limit plates are symmetrically distributed front and back, which can constrain the circuit board from different positions. The position of the limit plate can be flexibly adjusted by rotating the adjusting screw to adapt to flexible circuit boards of different specifications. The four sets of symmetrical limit plates can stably limit the circuit board from all directions, preventing the circuit board from shifting or shaking during transportation and cleaning.

[0012] Preferably, the cleaning mechanism includes a main cleaning disc fixedly installed at the end of the drive shaft, a secondary cleaning disc is provided at the bottom of the main cleaning disc, and soft bristles are provided at the bottom of the secondary cleaning disc.

[0013] Using the above technical solution, the drive shaft drives the main cleaning disc to rotate, which in turn drives the auxiliary cleaning disc to rotate synchronously. This causes the soft bristles at the bottom of the auxiliary cleaning disc to make a circular motion, thereby achieving a brushing action on the surface of the flexible circuit board. During the rotation process, the soft bristles can effectively remove dust, impurities and other contaminants from the surface of the flexible circuit board. Moreover, the soft bristles are soft in texture, which can avoid scratching and damaging the surface of the circuit board, ensuring the cleaning effect and the quality of the circuit board.

[0014] Preferably, five sets of auxiliary cleaning discs are arranged in a ring around the bottom of the main cleaning disc.

[0015] Using the above technical solution, when the main cleaning disc rotates under the drive shaft, the five sets of auxiliary cleaning discs arranged in a ring around its bottom rotate synchronously by mechanical transmission. This causes the soft bristles on the auxiliary cleaning discs to make a circular motion, forming a large and continuous cleaning coverage area. The ring distribution of the five sets of auxiliary cleaning discs can expand the cleaning range, improve cleaning efficiency, and clean different positions on the surface of the flexible circuit board at the same time. It can also ensure the uniformity of cleaning, reduce cleaning dead corners, and improve the overall cleaning quality.

[0016] Preferably, two sets of suction pipes are symmetrically arranged along both sides of the suction fan, and the suction head extends to the upper side of the positioning plate.

[0017] By adopting the above technical solution, when the vacuum blower is started, a negative pressure environment is formed inside the device. Because the vacuum pipes are symmetrically arranged along both sides of the vacuum blower, the vacuuming range can be expanded. At the same time, the vacuum head extends to the upper side of the positioning plate, which can accurately target the area where dust and impurities are generated during the cleaning of the flexible circuit board. The two sets of symmetrical vacuum pipes, together with the vacuum head extending to the key position, can efficiently and comprehensively remove the dust and impurities generated during the cleaning process, prevent them from being re-adhered to the circuit board, ensure the cleaning effect, and improve the production quality of the flexible circuit board.

[0018] Compared with the prior art, the beneficial effects of this utility model are: the surface cleaning device for flexible circuit board production, 1. The conveyor belt feeds the flexible circuit board into the cleaning box. After the infrared sensor detects that the circuit board is in place, the electric push rod pushes the positioning plate to fix it. The cylinder drives the motor and cleaning mechanism to descend. The motor drives the cleaning mechanism to rotate and clean the surface of the circuit board. At the same time, the dust collector blower sucks away the dust and impurities generated during cleaning through the dust collection pipe and dust collection head. The flexible circuit board is accurately positioned to achieve efficient cleaning of its surface, effectively remove dust and impurities, and ensure the production quality of the flexible circuit board. 2. Rotating the knob drives the adjusting screw to rotate on the fixed block. Since the adjusting screw is connected to the bearing of the limiting plate, under the limiting action of the fixed block, the rotational motion of the adjusting screw is converted into the linear movement of the limiting plate. According to the different widths of the flexible circuit board, the position of the limiting plate can be adjusted to limit the circuit board on the conveyor belt and prevent it from shifting during the conveying and cleaning process. 3. The drive shaft drives the main cleaning disc to rotate, which in turn drives the auxiliary cleaning disc to rotate synchronously. This causes the soft bristles at the bottom of the auxiliary cleaning disc to make a circular motion, thus achieving a brushing action on the surface of the flexible circuit board. During the rotation, the soft bristles can effectively remove dust, impurities and other contaminants from the surface of the flexible circuit board. Moreover, the soft bristles are soft in texture, which can avoid scratching and damaging the surface of the circuit board, ensuring the cleaning effect and the quality of the circuit board. 4. When the vacuum blower starts, a negative pressure environment is created inside the device. Because the vacuum pipes are symmetrically arranged on both sides of the vacuum blower, the vacuuming range can be expanded. At the same time, the vacuum head extends to the upper side of the positioning plate, which can accurately target the area where dust and impurities are generated during the cleaning of the flexible circuit board. The two sets of symmetrical vacuum pipes, together with the vacuum head extending to the key position, can efficiently and comprehensively remove the dust and impurities generated during the cleaning process, prevent them from being re-adhered to the circuit board, ensure the cleaning effect, and improve the production quality of the flexible circuit board. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the external structure of the main body of this utility model; Figure 2 This is a schematic diagram of the limiting plate adjustment structure of this utility model; Figure 3 This is a schematic diagram of the internal structure of the cleaning box of this utility model; Figure 4 This is a schematic diagram of the dust collection structure of this utility model; Figure 5 This is a schematic diagram of the cleaning mechanism of this utility model.

[0020] In the diagram: 1. Frame; 2. Conveyor belt; 3. Cleaning box; 4. Controller; 5. Fixing block; 6. Knob; 7. Adjusting screw; 8. Limit plate; 9. Cylinder; 10. Fixing frame; 11. Motor; 12. Drive shaft; 13. Cleaning mechanism; 1301. Main cleaning disc; 1302. Secondary cleaning disc; 1303. Soft brush bristles; 14. Electric push rod; 15. Positioning plate; 16. Infrared sensor; 17. Vacuum fan; 18. Vacuum hose; 19. Vacuum head. Detailed Implementation

[0021] 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.

[0022] Example 1 Please see Figure 1 , Figure 3 , Figure 5 This utility model provides a technical solution: A surface cleaning device for flexible circuit board production includes a frame 1 and a conveyor belt 2. The conveyor belt 2 is installed in the middle of the frame 1, and a cleaning box 3 is installed above the frame 1. A controller 4 is installed on the outside of the cleaning box 3, and a cylinder 9 is installed above the cleaning box 3. A fixing frame 10 is fixed to the extended end of the cylinder 9. A motor 11 is fixedly installed in the middle of the fixing frame 10. A drive shaft 12 is movably connected to the output end of the motor 11. A cleaning mechanism 13 is provided at the end of the drive shaft 12. Two sets of electric push rods 14 are symmetrically installed on the inner side of the cleaning box 3. A positioning plate 15 is fixed to the extended end of the electric push rods 14. Two sets of infrared sensors 16 are symmetrically installed on the inner wall of the cleaning box 3. The cleaning mechanism 13 includes a main cleaning disc 1301 fixedly installed at the end of the drive shaft 12, a secondary cleaning disc 1302 provided at the bottom of the main cleaning disc 1301, and soft bristles 1303 provided at the bottom of the secondary cleaning disc 1302. Five sets of auxiliary cleaning discs 1302 are arranged in a ring around the bottom of the main cleaning disc 1301.

[0023] In this surface cleaning device for flexible circuit board production, when the conveyor belt 2 transports the flexible circuit board into the cleaning box 3, two sets of infrared sensors 16 symmetrically installed on the inner wall of the cleaning box 3 detect that the circuit board has arrived in place and transmit signals to the controller 4. The controller 4 controls two sets of electric push rods 14 symmetrically installed on the inner side of the cleaning box 3 to extend, pushing the positioning plate 15 to accurately position and fix the circuit board, preventing the circuit board from moving during cleaning. Subsequently, the cylinder 9 above the cleaning box 3 is activated, and its extended end drives the fixing frame 10 to descend, causing the motor 11 installed in the middle of the fixing frame 10, the drive shaft 12 movably connected to the output end of the motor 11, and the cleaning mechanism 13 at the end of the drive shaft 12 to descend together to the appropriate cleaning position. The motor 11 drives the drive shaft 12 to rotate, which in turn drives the main cleaning disc 1301, which is fixedly installed at the end of the drive shaft 12, to rotate. Since the main cleaning disc 1301 has five sets of auxiliary cleaning discs 1302 arranged in a ring at the bottom, the rotation of the main cleaning disc 1301 will drive the five sets of auxiliary cleaning discs 1302 to rotate synchronously. The soft bristles 1303 arranged at the bottom of the auxiliary cleaning discs 1302 will then make a circular motion, which will thoroughly and efficiently clean the surface of the flexible circuit board. The ring distribution of the five sets of auxiliary cleaning discs 1302 expands the cleaning range and reduces cleaning dead corners. The soft bristles 1303 are soft and can avoid scratching the surface of the circuit board, thus ensuring the production quality of the flexible circuit board.

[0024] Example 2 Please see Figure 1 , Figure 4 This utility model provides a technical solution: A vacuum cleaner fan 17 is installed above the cleaning box 3. A vacuum cleaner pipe 18 is installed in the middle of the vacuum cleaner fan 17, and a vacuum cleaner head 19 is installed at the air inlet end of the vacuum cleaner pipe 18. Two sets of vacuum cleaner pipes 18 are symmetrically arranged along both sides of the vacuum cleaner fan 17, and the vacuum cleaner head 19 extends to the upper side of the positioning plate 15.

[0025] This surface cleaning device for flexible circuit board production operates as follows: After the flexible circuit board is conveyed into the cleaning box 3 by the conveyor belt 2 and fixed by the positioning plate 15, the cleaning mechanism 13 cleans the surface of the circuit board, generating dust and impurities. At this time, the vacuum fan 17 installed above the cleaning box 3 starts. Since two sets of suction pipes 18 are symmetrically arranged along both sides of the vacuum fan 17, and the suction heads 19 extend to the upper side of the positioning plate 15, the operation of the vacuum fan 17 creates a negative pressure environment inside the device. This allows the dust and impurities generated during the cleaning process to be sucked in by the airflow through the suction heads 19 extending to key positions, and then enter the vacuum fan 17 through the two symmetrically distributed sets of suction pipes 18, where they are finally collected and processed. This method can efficiently and comprehensively remove the dust and impurities generated during cleaning, preventing them from re-adhering to the circuit board, ensuring the cleaning effect, and improving the production quality of flexible circuit boards.

[0026] Example 3 Please see Figure 2 This utility model provides a technical solution: A fixing block 5 is welded to the top of the frame 1. A knob 6 is provided on one side of the fixing block 5. An adjusting screw 7 is fixed to the end of the knob 6. The end of the adjusting screw 7 is connected to a limit plate 8 by a bearing. The adjusting screw 7 passes through and is threadedly connected to the middle of the fixing block 5. Four sets of limit plates 8 are symmetrically arranged along the top of the frame 1.

[0027] In this surface cleaning device for flexible circuit board production, the fixed block 5 welded above the frame 1 serves as a fixed support. When the limit size needs to be adjusted according to the width of flexible circuit boards of different specifications, the operator rotates the knob 6 on one side of the fixed block 5. Since the end of the knob 6 is fixed with an adjusting screw 7, and the adjusting screw 7 passes through and is threadedly connected to the middle of the fixed block 5, rotating the knob 6 will cause the adjusting screw 7 to rotate on the fixed block 5. Based on the characteristics of threaded transmission, the rotational motion of the adjusting screw 7 is converted into the linear movement of the limit plate 8 connected to the bearing at its end. Since there are four sets of limit plates 8 symmetrically arranged along the upper part of the frame 1, by adjusting the position of these four sets of limit plates 8 respectively, the flexible circuit boards on the conveyor belt 2 can be precisely limited from different directions (front, back, left, and right) to prevent the circuit boards from shifting or shaking during transportation and cleaning, ensuring that the cleaning work is carried out stably and accurately, and guaranteeing the production quality of flexible circuit boards.

[0028] Working principle: In use, the conveyor belt 2 transports the flexible circuit board. When it enters the cleaning box 3, two sets of infrared sensors 16 symmetrically arranged on the inner wall of the cleaning box 3 detect that the circuit board is in place and transmit the signal to the controller 4. The controller 4 controls two sets of electric push rods 14 on the inner side of the cleaning box 3 to extend and push the positioning plate 15 to accurately position and fix the circuit board. At the same time, according to the width of the flexible circuit board of different specifications, the operator rotates the knob 6 on one side of the fixing block 5 above the frame 1, so that the adjusting screw 7 rotates and drives the limit plate 8 to move linearly. The four sets of limit plates 8 limit the circuit board from the front, back, left and right. After that, the cylinder 9 above the cleaning box 3 is activated and extends. The end-driven fixed frame 10 is lowered, causing the motor 11, drive shaft 12 and cleaning mechanism 13 to descend to a suitable cleaning position. The motor 11 rotates, driving the drive shaft 12 to rotate. The main cleaning disc 1301 rotates, causing five sets of auxiliary cleaning discs 1302 to rotate synchronously. The soft bristles 1303 at the bottom of the auxiliary cleaning discs 1302 brush and clean the surface of the circuit board. During the cleaning process, the vacuum fan 17 above the cleaning box 3 is started. Because two sets of vacuum pipes 18 are symmetrically arranged on both sides and the vacuum head 19 extends to the side above the positioning plate 15, the vacuum fan 17 forms a negative pressure, sucking in and collecting the dust and impurities generated during cleaning through the vacuum head 19 and vacuum pipe 18.

[0029] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A surface cleaning device for flexible circuit board production, comprising a frame (1) and a conveyor belt (2), wherein the conveyor belt (2) is installed in the middle of the frame (1), a cleaning box (3) is installed above the frame (1), and a controller (4) is installed on the outside of the cleaning box (3), characterized in that: A cylinder (9) is installed above the cleaning box (3). A fixed frame (10) is fixed to the extended end of the cylinder (9). A motor (11) is fixedly installed in the middle of the fixed frame (10). A drive shaft (12) is movably connected to the output end of the motor (11). A cleaning mechanism (13) is provided at the end of the drive shaft (12). Two sets of electric push rods (14) are symmetrically installed on the inner side of the cleaning box (3). A positioning plate (15) is fixed to the extended end of the electric push rod (14). Two sets of infrared sensors (16) are symmetrically installed on the inner wall of the cleaning box (3). A vacuum fan (17) is installed above the cleaning box (3). A vacuum pipe (18) is installed in the middle of the vacuum fan (17). A vacuum head (19) is installed at the air inlet end of the vacuum pipe (18).

2. The surface cleaning device for flexible circuit board production according to claim 1, characterized in that: A fixing block (5) is welded on the top of the frame (1). A knob (6) is provided on one side of the fixing block (5). An adjusting screw (7) is fixed at the end of the knob (6). A limit plate (8) is connected to the end of the adjusting screw (7) by a bearing.

3. The surface cleaning device for flexible circuit board production according to claim 2, characterized in that: The adjusting screw (7) passes through and is threadedly connected to the middle of the fixed block (5), and four sets of limiting plates (8) are symmetrically arranged along the top of the frame (1).

4. The surface cleaning device for flexible circuit board production according to claim 1, characterized in that: The cleaning mechanism (13) includes a main cleaning disc (1301) fixedly installed at the end of the drive shaft (12), a secondary cleaning disc (1302) is provided at the bottom of the main cleaning disc (1301), and soft bristles (1303) are provided at the bottom of the secondary cleaning disc (1302).

5. The surface cleaning device for flexible circuit board production according to claim 4, characterized in that: The auxiliary cleaning discs (1302) are arranged in five groups in a ring around the bottom of the main cleaning discs (1301).

6. The surface cleaning device for flexible circuit board production according to claim 1, characterized in that: Two sets of suction pipes (18) are symmetrically arranged on both sides of the suction fan (17), and the suction head (19) extends to the upper side of the positioning plate (15).

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