PET base material cleaning device for flexible circuit board

Abstract

The utility model discloses a PET base material cleaning device for a flexible circuit board. The PET base material cleaning device comprises a working cabinet body and a tension self-adjusting cleaning mechanism, a visual window is arranged in the middle of the front side face of the working cabinet. The tension self-adjusting cleaning mechanism comprises mounting plates, limiting rods, sliding blocks, mounting frames, rotating grooves, connecting rods, primary leveling rollers and fine brush rollers, the mounting plates are uniformly arranged on the inner wall of the upper side of the working cabinet body, one limiting rod is fixedly connected between every two transversely adjacent mounting plates, and the sliding blocks are arranged on the outer arc surfaces of the two limiting rods in a bilateral symmetry mode; and a mounting frame is fixedly connected between every two longitudinally adjacent sliding blocks, telescopic rods are symmetrically arranged in the middle of the inner wall of the lower side of the working cabinet body front and back, and the telescopic ends of the two telescopic rods are fixedly connected with the lower surface of one mounting frame. According to the PET base material cleaning device for the flexible circuit board, the PET base material is fully brushed, and the cleanliness is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible circuit board production, in particular to a PET substrate cleaning device for flexible circuit boards. Background Art

[0002] Flexible circuit boards are made of flexible insulating substrates and have advantages that PCB rigid circuit boards do not have. They can be bent, wound, and folded freely, can be arranged arbitrarily according to spatial layout requirements, and can be moved and stretched arbitrarily in three-dimensional space, thereby achieving the integration of component assembly and wire connection. The application of FPC can greatly reduce the volume and weight of electronic products, and meet the needs of electronic products developing towards high density, miniaturization, and high reliability. Therefore, FPC has been widely used in aerospace, military, mobile communications, portable computers, wearable consumer electronics and other fields. At the same time, FPC also has good heat dissipation and solderability. Since flexible circuit boards are produced based on PET substrates through multiple processes such as circuit printing, the cleanliness of the PET substrate is crucial to product quality.

[0003] CN202121480168.9 discloses a PET substrate cleaning device for a display, comprising a lower cleaning roller mechanism and an upper cleaning pressure roller mechanism, wherein the lower cleaning roller mechanism comprises a bracket and a cleaning roller, wherein the bracket is arranged horizontally, and a plurality of cleaning rollers are horizontally and side by side rotatably installed in the bracket, and the upper cleaning pressure roller mechanism comprises a support frame and a cleaning pressure roller, wherein a spur gear 1 is provided at the end of the cleaning roller, and a spur gear 2 is provided at the end of the cleaning pressure roller, and the spur gear 1 is meshed with the corresponding spur gear 2; a synchronous drive mechanism is provided on the bracket for driving all the cleaning rollers to rotate synchronously.

[0004] The above-mentioned PET substrate cleaning device has some problems in actual operation. For example, the cleaning roller is fixed. When the PET substrate passes through the cleaning roller, it may only be slightly scrubbed due to insufficient adhesion, resulting in low cleaning ability. For this reason, we propose a PET substrate cleaning device for flexible circuit boards. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a PET substrate cleaning device for flexible circuit boards, which has high cleanliness and can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned object, the present utility model provides the following technical solutions: a PET substrate cleaning device for flexible circuit boards, comprising a working cabinet and a tension self-adjusting cleaning mechanism;

[0007] A visual window is provided in the middle of the front side of the working cabinet;

[0008] The self-adjusting tension cleaning mechanism comprises a mounting plate, a limit rod, a slider, a mounting frame, a rotating groove, a connecting rod, a primary smoothing roller and a fine brush roller, wherein the mounting plates are evenly arranged on the upper inner wall of the working cabinet, a limit rod is fixedly connected between every two laterally adjacent mounting plates, the outer arc surfaces of the two limit rods are symmetrically provided with sliders, and a mounting frame is fixedly connected between every two longitudinally adjacent sliders, a telescopic rod is symmetrically provided front and back in the middle of the lower inner wall of the working cabinet, the telescopic ends of the two telescopic rods are also fixedly connected to the lower surface of a mounting frame, the lower surfaces of the two mounting frames on the upper side and the upper surface of the mounting frame on the lower side are symmetrically provided with rotating grooves, the interiors of the four rotating grooves on the upper side are hinged with connecting rods through pins, and the lower ends of the four connecting rods are also respectively hinged with the interiors of the vertically adjacent rotating grooves through pins, a primary smoothing roller is rotatably connected between the front and rear inner walls of the mounting frame on the left side by a rotating shaft, and the interiors of the mounting frame on the lower side and the mounting frame on the right side are also rotatably connected with fine brush rollers through rotating shafts, so that the PET substrate is fully brushed and the cleanliness is improved.

[0009] Furthermore, a single chip microcomputer is provided in the middle of the front side surface of the working cabinet, and the input end of the single chip microcomputer is electrically connected to an external power supply to control the normal operation of the motor.

[0010] Furthermore, the tension self-adjusting cleaning mechanism also includes a synchronous wheel, which is fixedly connected to the rear ends of the three rotating shafts respectively. The three synchronous wheels are connected through a synchronous belt transmission. A driving motor is provided on the front side of the lower mounting frame. The output shaft of the driving motor is fixedly connected to the front end of the lower rotating shaft. The input end of the driving motor is electrically connected to the output end of the single-chip microcomputer to provide power for cleaning.

[0011] Furthermore, a telescopic cylinder is provided in the middle of the lower inner wall of the working cabinet, the telescopic end of the telescopic cylinder is fixedly connected to the lower side wall of the lower mounting frame, and the air inlet of the telescopic cylinder is connected to an external air pump to provide power for changing the position of the roller body.

[0012] Furthermore, a wind knife frame is symmetrically provided on the upper and lower right sides of the interior of the working cabinet, and wind knives are respectively provided on the opposite inner sides of the two working cabinets. The air inlets of the two wind knives are respectively connected to external air pumps. A waste water tank is provided on the lower right side of the interior of the working cabinet, and the two wind knives correspond to the oblique positions of a waste water tank respectively, thereby realizing the function of removing dirt.

[0013] Furthermore, it also includes a spray flushing pipe, which is symmetrically arranged on the left side between the front and rear inner walls of the working cabinet. The outer arc surfaces of the two spray flushing pipes are provided with evenly distributed spray heads, and the water inlets of the two spray flushing pipes are both connected to external feeding equipment to realize the function of providing cleaning agent.

[0014] Furthermore, it also includes a water collection tank, which is arranged on the left side of the interior of the working cabinet. A water outlet is provided on the front side of the water collection tank to realize the function of circulating excess detergent.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] By changing the positions of the primary leveling roller and the two fine-bristled brush rollers, and thus changing the conveying direction of the PET substrate, the PET substrate with the cleaning agent will first be leveled by the primary leveling roller before cleaning, and then be brushed in sequence by the two fine-bristled brush rollers in a close contact manner, so that the PET substrate is fully brushed and the cleanliness is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the working cabinet of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the tension self-adjusting cleaning mechanism of the utility model.

[0020] In the figure: 1 working cabinet, 2 tension self-adjusting cleaning mechanism, 21 mounting plate, 22 limit rod, 23 slider, 24 mounting frame, 25 rotating trough, 26 connecting rod, 27 primary leveling roller, 28 fine brush roller, 29 synchronous wheel, 3 driving motor, 4 single chip microcomputer, 5 viewing window, 6 telescopic cylinder, 7 telescopic rod, 8 air knife frame, 9 air knife, 10 waste water tank, 11 spray flushing pipe, 12 spray head, 13 water collecting tank, 14 water outlet. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-3This embodiment provides a technical solution: a PET substrate cleaning device for flexible circuit boards, comprising a working cabinet 1 and a tension self-adjusting cleaning mechanism 2; a visual window 5 is provided in the middle of the front side of the working cabinet 1, and air knife frames 8 are symmetrically provided on the upper and lower right sides of the interior of the working cabinet 1, and air knives 9 are respectively provided on the opposite inner sides of the two working cabinets 1, and the air inlets of the two air knives 9 are respectively connected to external air pumps, and a waste water tank 10 is provided on the lower right side of the interior of the working cabinet 1, and the two air knives 9 are respectively corresponding to one waste water tank 10 at an oblique position; a single-chip microcomputer 4 is provided in the middle of the front side of the working cabinet 1, and the input end of the single-chip microcomputer 4 is electrically connected to an external power supply.

[0023] In addition, it also includes a spray flushing pipe 11, which is symmetrically arranged on the left side between the front and rear inner walls of the working cabinet 1. The outer arc surfaces of the two spray flushing pipes 11 are provided with evenly distributed spray heads 12, and the water inlets of the two spray flushing pipes 11 are both externally connected to external feeding equipment; it also includes a water collecting tank 13, which is arranged on the left side inside the working cabinet 1, and a water outlet 14 is provided on the front side of the water collecting tank 13.

[0024] Among them, the tension self-adjusting cleaning mechanism 2 includes a mounting plate 21, a limiting rod 22, a slider 23, a mounting frame 24, a rotating groove 25, a connecting rod 26, a primary leveling roller 27 and a fine brush roller 28. The mounting plates 21 are evenly arranged on the upper inner wall of the working cabinet 1. A limiting rod 22 is fixedly connected between every two laterally adjacent mounting plates 21. The outer arc surfaces of the two limiting rods 22 are symmetrically provided with sliders 23. A mounting frame 24 is fixedly connected between every two longitudinally adjacent sliders 23. A telescopic rod 7 is symmetrically provided front and back in the middle of the lower inner wall of the working cabinet 1. The telescopic ends of the two telescopic rods 7 are also fixedly connected to the lower surface of a mounting frame 24. The lower surfaces of the two mounting frames 24 on the upper side and the upper surface of the mounting frame 24 on the lower side are symmetrically provided with rotating grooves 25. The interiors of the four rotating grooves 25 on the upper side are hinged with connecting rods 26 through pins. The lower ends of the rods 26 are also hinged to the inside of the vertically adjacent rotating grooves 25 through pins. A primary leveling roller 27 is rotatably connected between the front and rear inner walls of the left mounting frame 24 through a rotating shaft. The interiors of the lower mounting frame 24 and the right mounting frame 24 are also rotatably connected to fine brush rollers 28 through rotating shafts; the tension self-adjusting cleaning mechanism 2 also includes a synchronous wheel 29, which is fixedly connected to the rear ends of the three rotating shafts, and the three synchronous wheels 29 are connected through a synchronous belt transmission. A drive motor 3 is provided on the front side of the lower mounting frame 24, and the output shaft of the drive motor 3 is fixedly connected to the front end of the lower rotating shaft. The input end of the drive motor 3 is electrically connected to the output end of the single-chip microcomputer 4. A telescopic cylinder 6 is provided in the middle of the lower inner wall of the working cabinet 1. The telescopic end of the telescopic cylinder 6 is fixedly connected to the lower side wall of the lower mounting frame 24, and the air inlet of the telescopic cylinder 6 is connected to an external air pump.

[0025] The working principle of this utility model is as follows:

[0026] During operation, the PET substrate is unwound by the unwinder. At this time, the unwound PET substrate can be guided to pass between the two spray and flushing pipes 11 in sequence, and then pass through the lower side of the primary leveling roller 27, and then pass between the two fine brush rollers 28, and then pass between the two air knives 9. The unwound PET substrate is then connected to the external winder. At this time, the external feeding equipment can be adjusted, and the cleaning agent enters the two spray and flushing pipes 11, and is then sprayed out through two sets of opposite spray heads 12 to spray the upper and lower surfaces of the PET substrate. The excess cleaning agent falls back into the water collection tank 13.

[0027] At this time, the external unwinder and winder can be regulated to move the PET substrate to the right. During this period, the PET substrate passing through the two spray flushing pipes 11 will adhere to the cleaning agent. At this time, the external cylinder can be regulated, and the telescopic end of the telescopic cylinder 6 is extended, thereby driving the lower mounting frame 24 to move slowly upward, thereby driving the lower fine brush roller 28 to move upward, and then through the connecting rod 26, the two sliders 23 on the left and the two sliders 23 on the right are pushed away from each other, thereby driving the primary leveling roller 27 and the fine brush roller 28 on the right to move away from each other. At this time, the outer arc surface of the primary leveling roller 27 on the left is attached to the upper surface of the PET substrate, and the fine brush roller 28 on the lower side is attached to the lower surface of the PET substrate, and pushes the lower surface of the PET substrate upward, and changes the conveying path of the PET substrate. The fine brush roller 28 on the right is attached to the upper surface of the PET substrate again, and pushes the lower surface of the PET substrate downward, and restores the conveying path of the PET substrate. At this time, the primary leveling roller 27, the fine brush roller 28 on the lower side and the fine brush roller 28 on the right are sequentially moved away. The PET substrate of the brush roller 28 is tightly attached to the outer surface of these rollers and changes the conveying line. During this adjustment period, the unwinding rate of the external unwinder can be adjusted to adapt to the change of the conveying line. At this time, the single-chip microcomputer 4 can be adjusted to drive the motor 3 to operate, and the output shaft of the drive motor 3 rotates, thereby driving the lower rotating shaft to rotate, and then driving the three synchronous wheels 29 to rotate synchronously through the synchronous belt, thereby driving a primary leveling roller 27 and two fine brush rollers 28 to rotate. The PET substrate will first be subjected to the primary leveling of the primary leveling roller 27, and then pass through the lower fine brush roller 28 and the fine brush roller 28 on the right to brush both sides of the PET substrate, and then continue to move to the right. At this time, the external air pump can be adjusted, and the high-pressure airflow enters the wind knife 9 to form a high-pressure airflow that is continuously blown out. The residual dirt washed on both sides of the PET substrate passing here is blown off together with the remaining detergent, and then falls into the wastewater tank 10. Then, the cleaned PET substrate will be wound up by the external winder to complete the cleaning operation of the PET substrate.

[0028] It is worth noting that the single chip microcomputer 4 disclosed in the above embodiment is specifically model STM32, and the drive motor 3, telescopic cylinder 6, air knife 9 and sprinkler head 12 can be freely configured according to the actual application scenario. It is recommended to use a 90 series DC brushless motor for the drive motor 3, an SMC series servo cylinder for the telescopic cylinder 6, a KLT model 304 stainless steel fan nozzle for the sprinkler head 12, and an SS-B1 model air knife for the air knife 9. The single chip microcomputer 4 controls the operation of the drive motor 3 using methods commonly used in the prior art.

[0029] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A PET substrate cleaning device for flexible circuit boards, characterized in that: It comprises a working cabinet (1) and a tension self-adjusting cleaning mechanism (2); A visual window (5) is provided in the middle of the front side of the working cabinet (1); The tension self-adjusting cleaning mechanism (2) comprises a mounting plate (21), a limiting rod (22), a slider (23), a mounting frame (24), a rotating groove (25), a connecting rod (26), a primary leveling roller (27) and a fine brush roller (28), wherein the mounting plate (21) is evenly arranged on the upper inner wall of the working cabinet (1), a limiting rod (22) is fixedly connected between every two transversely adjacent mounting plates (21), sliders (23) are symmetrically provided on the outer arc surfaces of the two limiting rods (22), a mounting frame (24) is fixedly connected between every two longitudinally adjacent sliders (23), a telescopic rod (7) is symmetrically provided in the middle of the lower inner wall of the working cabinet (1), and the two connecting rods (26) are fixedly connected to each other. The telescopic ends of the telescopic rods (7) are also fixedly connected to the lower surface of a mounting frame (24). The lower surfaces of the two mounting frames (24) on the upper side and the upper surface of the mounting frame (24) on the lower side are symmetrically provided with rotation grooves (25). The interiors of the four rotation grooves (25) on the upper side are hinged with connecting rods (26) through pins. The lower ends of the four connecting rods (26) are also hinged with the interiors of the vertically adjacent rotation grooves (25) through pins. A primary leveling roller (27) is rotatably connected between the front and rear inner walls of the mounting frame (24) on the left side through a rotating shaft. The interiors of the mounting frame (24) on the lower side and the mounting frame (24) on the right side are also rotatably connected with fine brush rollers (28) through rotating shafts.

2. The PET substrate cleaning device for flexible circuit boards according to claim 1, characterized in that: A single-chip microcomputer (4) is provided in the middle of the front side of the working cabinet (1), and an input end of the single-chip microcomputer (4) is electrically connected to an external power supply.

3. The PET substrate cleaning device for flexible circuit boards according to claim 2, characterized in that: The tension self-adjusting cleaning mechanism (2) further comprises a synchronous wheel (29), the synchronous wheel (29) being fixedly connected to the rear ends of the three rotating shafts respectively, the three synchronous wheels (29) being connected via a synchronous belt transmission, a driving motor (3) being provided on the front side of the lower mounting frame (24), the output shaft of the driving motor (3) being fixedly connected to the front end of the lower rotating shaft, and the input end of the driving motor (3) being electrically connected to the output end of the single chip microcomputer (4).

4. The PET substrate cleaning device for flexible circuit boards according to claim 1, characterized in that: A telescopic cylinder (6) is provided in the middle of the lower inner wall of the working cabinet (1), the telescopic end of the telescopic cylinder (6) is fixedly connected to the lower wall of the lower mounting frame (24), and the air inlet of the telescopic cylinder (6) is connected to an external air pump.

5. The PET substrate cleaning device for flexible circuit boards according to claim 1, characterized in that: An air knife frame (8) is symmetrically arranged on the upper and lower right sides of the interior of the working cabinet (1), and air knives (9) are respectively arranged on the opposite inner sides of the two working cabinets (1). The air inlets of the two air knives (9) are respectively connected to external air pumps. A waste water tank (10) is arranged on the lower right side of the interior of the working cabinet (1), and the two air knives (9) correspond to a waste water tank (10) at an oblique position.

6. The PET substrate cleaning device for flexible circuit boards according to claim 1, characterized in that: The utility model also comprises a spray flushing pipe (11), wherein the spray flushing pipe (11) is symmetrically arranged on the left side between the front and rear inner walls of the working cabinet (1), and the outer arc surfaces of the two spray flushing pipes (11) are provided with evenly distributed spray heads (12), and the water inlets of the two spray flushing pipes (11) are both externally connected to an external feeding device.

7. The PET substrate cleaning device for flexible circuit boards according to claim 1, characterized in that: It also includes a water collecting tank (13), which is arranged on the left side of the interior of the working cabinet (1), and a water outlet (14) is provided on the front side of the water collecting tank (13).

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