Cleaning device and method for developing dry film on circuit board

Abstract

The invention discloses a cleaning device for a developing dry film on a circuit board, and belongs to the technical field of circuit board cleaning devices and methods, and the cleaning device comprises a conveying line which is installed on a frame, extends in a preset direction, and is used for bearing and conveying a bearing table on the circuit board; the blowing cleaning mechanism comprises fixing plates fixed to the two sides of the top end of the frame, sliding grooves are formed in the fixing plates, first sliding blocks are movably connected to the fixing plates, air cylinders fixed to the fixing plates are connected to the top ends of the first sliding blocks, and the first sliding blocks are connected with the bottoms of the inner walls of the fixing plates through compression springs; the two ends of the outer wall of the first sliding block are fixedly connected with first motors through supports. The technical problems that no matter for the circuit board itself or in the dry film external irradiation process, the requirement for the cleanliness of the processing environment is high, dust and pollutants possibly have remarkable influences on the processing effect of the circuit board, the product quality is reduced, and even the circuit board is scrapped are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of circuit board cleaning devices and methods, and in particular relates to a cleaning device and method for a developed dry film on a circuit board. Background Art

[0002] The dry film of circuit board development is relative to the wet film. The dry film is a polymer material. After being irradiated by ultraviolet rays, it can produce a polymerization reaction to form a stable substance attached to the board surface, thereby achieving the function of blocking electroplating and etching. Dry film is an important consumable material for making printed circuit boards and is widely used in the microelectronics industry and circuit board manufacturing industry.

[0003] Dry film is easy to operate and suitable for some relatively simple processing tasks, but it has certain limitations in terms of coverage and resolution. At the same time, dry film is also a semi-hardened film. It needs to undergo polymerization during the processing to form a protective layer to improve its adhesion. Both for the circuit board itself and for the dry film during external irradiation, the cleanliness of the processing environment is required to be high, because dust and pollutants may have a significant impact on its processing effect, reduce product quality, and even cause the circuit board to be scrapped. Summary of the invention

[0004] The purpose of the present invention is to provide a cleaning device and method for a developed dry film on a circuit board, so as to solve the technical problem that both the circuit board itself and the dry film have high requirements for the cleanliness of the processing environment during external irradiation, because dust and pollutants may have a significant impact on the processing effect, reduce product quality, and even cause the circuit board to be scrapped.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A cleaning device for developing a dry film on a circuit board, comprising: A conveyor line, which is installed on the frame and extends along a preset direction to carry and convey the carrier platform on the circuit board; The blowing cleaning mechanism comprises a fixing plate fixed on both sides of the top of the frame, a sliding groove is provided on the fixing plate and is movably connected with a first slider, a cylinder fixed on the fixing plate is connected to the top of the first slider, and the first slider and the bottom of the inner wall of the fixing plate are connected by a compression spring, a first motor is fixedly connected to the outer wall of the first slider at both ends through a bracket, an output shaft of the first motor passes through the first slider and extends to a cleaning roller, and bristles adapted thereto are connected to the cleaning roller; The output shaft of the first motor and the first rotating wheel on the fixed block are connected by a first conveyor belt transmission, the fixed block is installed at the bottom of the fixed plate, and the first rotating wheel and the second rotating wheels at both ends of the fixed block are connected by a second conveyor belt transmission, the first conveyor belt and the second conveyor belt are arranged in parallel and staggered, and the wrap angle formed by the second conveyor belt between the first rotating wheel and the second rotating wheel is greater than degrees; One end of the second rotating wheel extends into the ventilation hole inside the fixed block, the outer wall of the second rotating wheel is connected with a rotating blade, and the inner wall of the ventilation hole and the bearing on the second rotating wheel are connected through a fixing rod.

[0006] Furthermore, a cross beam is fixedly mounted on one end of the piston rod on the cylinder, the protrusion on the cross beam and the second slider are connected by a swing rod, both sides of the swing rod are mounted on the protrusion and the second slider by a rotational connection, and the second slider is provided with a guide groove along the length direction of the guide plate fixed on the frame.

[0007] Furthermore, one end of the second slider is connected to a baffle plate placed at the ventilation hole through a bending rod away from the swing rod, and one end of the bending rod is movably connected to a tensioning wheel placed between the first conveyor belts. As the cylinder is started, the first slider drives the bristles on the cleaning roller to contact and fit the circuit board, and at the same time the tensioning wheel adjusts the tension of the first conveyor belt, and the ventilation hole is opened under the action of the baffle plate.

[0008] Furthermore, it also includes an irradiation polymerization mechanism, which includes a U-shaped plate fixed on the frame, a second motor fixedly installed at the center of the top end of the U-shaped plate, the output shaft of the second motor extends to the first bevel gear and the first screw shaft in sequence, both ends of the outer wall of the first bevel gear are meshed with second bevel gears fixed on the second screw shaft, the outside of the first bevel gear and the second bevel gear are both placed in a cover body, and the top end of the cover body is fixedly connected to the U-shaped plate through a column.

[0009] Furthermore, a third slider is spirally driven on the first screw shaft, and a UV lamp is connected to the bottom of the third slider via a sealing plate. The first screw shaft and the second screw shaft are vertically arranged.

[0010] Furthermore, a fourth slider fixed on the moving rod is spirally driven on the second screw shaft, the bottom of the moving rod is connected to the telescopic box, the top of the telescopic box is provided with semicircular holes, and a circular hole corresponding to the sealing plate is formed between the semicircular holes.

[0011] Furthermore, an unwinder placed on a frame is provided between the irradiation polymerization mechanism and the blowing cleaning mechanism, and the unwinder includes an unwinding wheel connected to an unwinding motor.

[0012] A method for cleaning a developed dry film on a circuit board comprises the following steps: S1. The circuit board is placed on the carrier and transported through the conveyor line. The cylinder is started and drives the cleaning roller to the corresponding height point. The first motor is started and the surface of the circuit board is cleaned by the bristles. S2. After the cylinder in step S1 is started, the ventilation hole can be opened, and the transmission of the first conveyor belt can be tightened and adjusted. Under the action of mechanical transmission, the second rotating wheel drives the rotating blades to rotate, and the blowing and dust removal work is started; S3, the unwinding motor drives the unwinding wheel to rotate, and the dry film is cut in sections by a cutter or manual operation, so that the dry film is laid on the circuit board; S4, the second motor starts, and under the action of the spiral transmission, the telescopic box moves to the center, the sealing plate moves downward and closes the circular hole, and a polymerization reaction occurs under the action of the ultraviolet light, so that the dry film increases the adhesion and adheres to the circuit board.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: A blowing cleaning mechanism is provided. After the cylinder is started, the cleaning roller can be driven downward to a corresponding height. The bristles on the cleaning roller are made of carbon fiber, which has excellent conductive properties, can effectively prevent static electricity accumulation, and protect electronic components from damage. The start of the first motor can not only drive the cleaning roller to rotate and clean by friction, but also transmit power to the first rotating wheel. Under the transmission action of the conveyor belt, the power can be transmitted to the second rotating wheels at both ends. The second rotating wheel can drive the rotation of the rotating blades, and the particle impurities on the circuit board can be removed by blowing cleaning. At the same time, during the descent of the piston rod on the cylinder, the second slider can be moved outward through the rotation connection of the swing rod and drive the synchronous movement of the tensioning wheel and the baffle plate. The tensioning wheel can adjust the rotation distance of the first conveyor belt, and the baffle plate can open the vents to ensure the normal blowing and cleaning work of the rotating blades. In addition, during the return process of the baffle plate, dust can be prevented from falling inside the vents when not in use, effectively ensuring the cleanliness of the device, and dust and particle impurities on the surface of the circuit board can be effectively removed, which is beneficial to the subsequent process flow.

[0014] (2) An unwinder is provided. Under the action of an unwinding motor, the dry film can be laid on the circuit board, and then the dry film is cut by a corresponding existing cutter so that the dry film can be disconnected, thereby effectively improving work efficiency.

[0015] (3) An irradiation polymerization mechanism is provided. After the second motor is started, it can drive the rotation of the first bevel gear. Under the gear meshing transmission action, it can drive the rotation of the first screw shaft and the second screw shaft. Through the spiral transmission action, the ultraviolet irradiation lamp can reach the corresponding position point. At the same time, the moving rod can drive the centering movement of the telescopic box. Moreover, when the semicircular holes on the telescopic box are combined into a single circular hole, it can be connected with the sealing plate accordingly, thereby forming a relatively sealed environment for the telescopic box. At the same time, the sealing plate on the ultraviolet irradiation lamp can, on the one hand, cover and seal the circular hole, and on the other hand, allow the ultraviolet irradiation lamp to move up and down normally, thereby ensuring the dust-freeness of the dry film during the polymerization reaction on the circuit board, effectively improving the product quality, and having a reasonable design and strong integrated performance. It can quickly improve the adhesion of the dry film on the circuit board, so that the dry film can be effectively bonded to the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The present invention is a schematic diagram of a cleaning device for developing dry film on a circuit board. Figure 1 ; Figure 2 The present invention is a schematic diagram of a cleaning device for developing dry film on a circuit board. Figure 2 ; Figure 3 It is a front view of a cleaning device for developing a dry film on a circuit board according to the present invention; Figure 4 It is a right side view of a cleaning device for developing dry film on a circuit board according to the present invention; Figure 5 It is a structural schematic diagram of the fixing block of the present invention; Figure 6 The present invention Figure 1 A magnified image of point A; Figure 7 The present invention Figure 4 The enlarged view of point B; Figure 8 Schematic diagram of meshing transmission between the first bevel gear and the second bevel gear of the present invention; Fig. 9 The present invention is a schematic flow chart of a method for cleaning a developed dry film on a circuit board.

[0018] Figure numerals: 1, conveyor line; 2, carrier platform; 3, air blowing cleaning mechanism; 4, fixed plate; 5, first slider; 6, cylinder; 7, compression spring; 8, first motor; 9, cleaning roller; 10, bristles; 11, fixed block; 12, first rotating wheel; 13, first conveyor belt; 14, second rotating wheel; 15, second conveyor belt; 16, ventilation hole; 17, rotating blade; 18, crossbeam; 19, second slider; 20, swing rod; 21, guide Toward plate; 22, bending rod; 23, shielding plate; 24, tensioning wheel; 25, irradiation polymerization mechanism; 26, U-shaped plate; 27, second motor; 28, first bevel gear; 29, first screw shaft; 30, second screw shaft; 31, second bevel gear; 32, cover body; 33, third slider; 34, sealing plate; 35, ultraviolet irradiation lamp; 36, moving rod; 37, fourth slider; 38, telescopic box; 39, semicircular hole; 40, unwinder. DETAILED DESCRIPTION

[0019] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0020] Reference Manual Attached Figure 1 , Attachment Figure 2 and attached Figure 4 As shown, a cleaning device for developing a dry film on a circuit board comprises: A conveyor line 1, which is installed on a frame and extends in a preset direction to carry and convey a carrier table 2 on a circuit board; an air blowing cleaning mechanism 3, which includes a fixed plate 4 fixed on both sides of the top of the frame, a slide groove is provided on the fixed plate 4 and a first slider 5 is movably connected thereto, a cylinder 6 fixed on the fixed plate 4 is connected to the top of the first slider 5, and the first slider 5 and the bottom of the inner wall of the fixed plate 4 are connected by a compression spring 7, and the first motor 8 is fixedly connected to the outer wall of the first slider 5 at both ends through a bracket, and the output shaft of the first motor 8 passes through the first slider 5 and extends to a cleaning roller 9, and a brush 10 adapted thereto is connected to the cleaning roller 9.

[0021] Among them, the output shaft of the first motor 8 and the first rotating wheel 12 on the fixed block 11 are connected by a first conveyor belt 13, the fixed block 11 is installed at the bottom of the fixed plate 4, and the first rotating wheel 12 and the second rotating wheels 14 at both ends of the fixed block 11 are connected by a second conveyor belt 15, the first conveyor belt 13 and the second conveyor belt 15 are arranged in parallel and staggered, and the wrap angle formed by the second conveyor belt 15 between the first rotating wheel 12 and the second rotating wheel 14 is greater than 120 degrees.

[0022] The staggered parallel arrangement of the first conveyor belt 13 and the second conveyor belt 15 can effectively ensure the effective transmission of the force. In addition, the above-mentioned wrap angle setting can ensure that the contact area between the belt and the wheel is large enough, thereby increasing the friction and improving the transmission capacity. If the wrap angle is too small, it is easy to cause slipping, which is not conducive to the stable operation of the transmission parts.

[0023] A blowing cleaning mechanism 3 is provided. After the cylinder 6 is started, it can drive the cleaning roller 9 downward to a corresponding height. The bristles 10 on the cleaning roller 9 are made of carbon fiber, which has excellent conductive properties and can effectively prevent static electricity accumulation and protect electronic components from damage. The first motor 8 is started and can not only drive the cleaning roller 9 to rotate and clean by friction, but also transmit power to the first rotating wheel 12. Under the transmission action of the conveyor belt, the power can be transmitted to the second rotating wheels 14 at both ends. The second rotating wheel 14 can drive the rotation of the rotating blades 17, and the particulate impurities on the circuit board are removed by blowing cleaning. At the same time, the piston rod on the cylinder 6 During the descent process, the second slider 19 can be moved outward through the rotation connection of the swing rod 20, driving the synchronous movement of the tensioning wheel 24 and the baffle plate 23. The tensioning wheel 24 can adjust the tightness of the rotation distance of the first conveyor belt 13, and the baffle plate 23 can open the ventilation hole 16, ensuring the normal blowing and cleaning work of the rotating blade 17. Moreover, during the return process of the baffle plate 23, dust can be prevented from falling inside the ventilation hole 16 when it is not in use, thereby effectively ensuring the cleanliness of the device and effectively removing dust and particulate impurities on the surface of the circuit board, which is beneficial to the subsequent process flow.

[0024] Specifically, when the first slider 5 moves up and down under the action of the cylinder 6, the compression spring 7 can play a buffering and regulating role for the first slider 5, and can also prevent the first slider 5 from deviating from the position in the slide groove. Moreover, the rotational force of the rotating blade 17 comes from the first motor 8, so there is no need to set up an additional power source, which is beneficial to saving resources and environmental protection.

[0025] refer to Figure 3 , Figure 5 and Figure 6 One end of the second rotating wheel 14 extends into the ventilation hole 16 inside the fixed block 11 , the outer wall of the second rotating wheel 14 is connected with a rotating blade 17 , and the inner wall of the ventilation hole 16 and the bearing on the second rotating wheel 14 are connected through a fixing rod.

[0026] A crossbeam 18 is fixedly installed on one end of the piston rod on the cylinder 6, and the protrusion on the crossbeam 18 and the second slider 19 are connected by a swing rod 20. Both sides of the swing rod 20 are installed on the protrusion and the second slider 19 by a rotational connection. The second slider 19 is provided with a guide groove along the length direction of a guide plate 21 fixed to the frame. One end of the second slider 19 away from the swing rod 20 is connected to a baffle plate 23 placed at the ventilation hole 16 through a bending rod 22. One end of the bending rod 22 is movably connected to a tensioning wheel 24 placed between the first conveyor belt 13. As the cylinder 6 is started, the first slider 5 drives the bristles 10 on the cleaning roller 9 to contact and fit with the circuit board. At the same time, the tensioning wheel 24 adjusts the tension of the first conveyor belt 13, and the ventilation hole 16 is opened under the action of the baffle plate 23.

[0027] Specifically, when the cylinder 6 drives the first slider 5 on the piston rod to move downward, it can not only drive the cleaning roller 9 to drive the corresponding cleaning position point, but also because the first motor 8 moves downward at the same time, the tension of the first conveyor belt 13 between the output shaft of the first motor 8 and the first rotating wheel 12 is in a relaxed state. Through the rotation connection of the swing rod 20, the second slider 19 can drive the tensioning wheel 24 on the bending rod 22 to move outward, which can also ensure the tension of the first conveyor belt 13 transmission, and then enable the first conveyor belt 13 to perform normal transmission work. At the same time, during the movement of the bending rod 22, the ventilation hole 16 can be opened through the baffle plate 23, so that the rotating blade 17 can perform corresponding air blowing and cleaning work. The linkage is strong, which can ensure the synchronous operation of multiple components and avoid interference between transmission parts.

[0028] A cleaning device for developing dry film on a circuit board also includes an irradiation polymerization mechanism 25, which includes a U-shaped plate 26 fixed on a frame, a second motor 27 fixedly installed at the center of the top end of the U-shaped plate 26, and an output shaft of the second motor 27 extends to a first bevel gear 28 and a first screw shaft 29 in sequence. Both ends of the outer wall of the first bevel gear 28 are meshed and driven with a second bevel gear 31 fixed on a second screw shaft 30. The outsides of the first bevel gear 28 and the second bevel gear 31 are both placed in a cover body 32, and the top end of the cover body 32 is fixedly connected to the U-shaped plate 26 through a column.

[0029] A third slider 33 is spirally driven on the first screw shaft 29, and an ultraviolet lamp 35 is connected to the bottom of the third slider 33 through a sealing plate 34. The first screw shaft 29 and the second screw shaft 30 are kept vertically arranged, and a fourth slider 37 fixed on a moving rod 36 is spirally driven on the second screw shaft 30. The bottom of the moving rod 36 is connected to a telescopic box 38. A semicircular hole 39 is opened on the top of the telescopic box 38, and a circular hole corresponding to the sealing plate 34 is formed between the semicircular holes 39.

[0030] An irradiation polymerization mechanism 25 is set. After the second motor 27 is started, it can drive the rotation of the first bevel gear 28. Under the gear meshing transmission action, it can drive the rotation of the first screw shaft 29 and the second screw shaft 30. Through the spiral transmission action, the ultraviolet irradiation lamp 35 can reach the corresponding position point. At the same time, the moving rod 36 can drive the centering movement of the telescopic box 38. Moreover, when the semicircular holes 39 on the telescopic box 38 are merged into a single circular hole, they can be connected to the sealing plate 34 accordingly, thereby forming a relatively sealed environment for the telescopic box 38. At the same time, the sealing plate 34 on the ultraviolet irradiation lamp 35 is set. On the one hand, the circular hole can be covered and sealed, and on the other hand, the ultraviolet irradiation lamp 35 can be moved up and down normally, thereby ensuring the dust-freeness of the dry film during the polymerization reaction on the circuit board, effectively improving the product quality, and having a reasonable design and strong integration performance. It can quickly improve the adhesion of the dry film on the circuit board, so that the dry film can be effectively bonded to the circuit board.

[0031] Specifically, the cover body 32 has a supporting and connecting function for the first bevel gear 28 and the second bevel gear 31, and can also play a certain protective role. When the ultraviolet lamp 35 moves downward, the telescopic boxes 38 are aligned and closed, thereby forming a relatively closed environment to prevent external dust particles from entering the reaction space. When the ultraviolet lamp 35 moves upward, the telescopic boxes 38 move outward and separate, thereby allowing the next circuit board to be transported normally.

[0032] The unwinder 40 is provided, and under the action of the unwinding motor, the dry film can be laid on the circuit board, and then the dry film is cut by the corresponding existing cutter, so that the dry film can be disconnected, which effectively improves the work efficiency.

[0033] A reel 40 placed on the frame is provided between the irradiation polymerization mechanism 25 and the blowing cleaning mechanism 3. The reel 40 includes a reel wheel connected to the reel motor. When the reel wheel lays the dry film on the circuit board, the electric push rod pushes the cutting knife to cut the dry film. The cutting knife can directly cut the dry film on the carrier table 2. Since the technical solution of electric push and cutting is a conventional technical means for technical personnel in this field, the drawings in the specification are not drawn, but it does not affect the effective implementation of the technical solution of this patent. In addition, by extension, it can also be directly partitioned by manual cutting. The main technical solution is set according to actual needs.

[0034] A method for cleaning a developed dry film on a circuit board comprises the following steps: S1, the circuit board is placed on the carrier 2 and transported through the conveyor line 1, the cylinder 6 is started, and drives the cleaning roller 9 to reach the corresponding height point, the first motor 8 is started, and the surface of the circuit board is cleaned by the bristles 10; S2, step S1 After the cylinder 6 is started, the ventilation hole 16 can be opened, and the transmission of the first conveyor belt 13 can be adjusted to tighten. Under the action of mechanical transmission, the second rotating wheel 14 drives the rotating blade 17 to rotate, and the blowing and dust removal work is started; S3, the unwinding motor drives the unwinding wheel to rotate, and the dry film is cut in sections by a cutter or manual operation, so that the dry film is laid on the circuit board; S4, the second motor 27 is started, and under the action of the spiral transmission, the telescopic box 38 moves to the center, the sealing plate 34 moves downward and closes the circular hole, and a polymerization reaction occurs under the action of the ultraviolet irradiation lamp 35, so that the dry film increases the adhesion and adheres to the circuit board.

[0035] The whole cleaning method has a high degree of automation, and can quickly clean the developer dry film and the circuit board, ensuring that the dry film can be effectively bonded to the circuit board, is not easy to separate, has good bonding quality, and can effectively improve work efficiency.

[0036] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0037] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A cleaning device for developing a dry film on a circuit board, characterized in that: include: A conveyor line (1), the conveyor line (1) being mounted on a frame and extending along a preset direction, and being used to carry and convey a carrying platform (2) on a circuit board; A blowing cleaning mechanism (3), the blowing cleaning mechanism (3) comprising a fixing plate (4) fixed to both sides of the top of a frame, a sliding groove being provided on the fixing plate (4) and movably connected to a first slider (5), the top of the first slider (5) being connected to a cylinder (6) fixed to the fixing plate (4), and the first slider (5) and the bottom of the inner wall of the fixing plate (4) being connected via a compression spring (7), the outer wall of the first slider (5) being fixedly connected to a first motor (8) via a bracket at both ends, the output shaft of the first motor (8) passing through the first slider (5) and extending to a cleaning roller (9), and the cleaning roller (9) being connected to bristles (10) adapted thereto; The output shaft of the first motor (8) and the first rotating wheel (12) on the fixed block (11) are connected to each other by a first conveyor belt (13); the fixed block (11) is mounted on the bottom of the fixed plate (4); the first rotating wheel (12) and the second rotating wheels (14) at both ends of the fixed block (11) are connected to each other by a second conveyor belt (15); the first conveyor belt (13) and the second conveyor belt (15) are arranged in parallel and staggered manner; and the wrap angle formed by the second conveyor belt (15) between the first rotating wheel (12) and the second rotating wheel (14) is greater than 120 degrees; One end of the second rotating wheel (14) extends into a ventilation hole (16) inside the fixed block (11); a rotating blade (17) is connected to an outer wall of the second rotating wheel (14); and an inner wall of the ventilation hole (16) and a bearing on the second rotating wheel (14) are connected via a fixing rod.

2. A cleaning device for developing dry film on a circuit board according to claim 1, characterized in that: A crossbeam (18) is fixedly mounted on one end of the piston rod on the cylinder (6); a protrusion on the crossbeam (18) and a second slider (19) are connected via a swing rod (20); both sides of the swing rod (20) are mounted on the protrusion and the second slider (19) in a rotatable manner; and a guide groove is provided on the second slider (19) along the length direction of a guide plate (21) fixed to the frame.

3. A cleaning device for developing dry film on a circuit board according to claim 2, characterized in that: One end of the second slider (19) is connected to a shielding plate (23) disposed at the ventilation hole (16) via a bending rod (22) on the side away from the swing rod (20); one end of the bending rod (22) is movably connected to a tensioning wheel (24) disposed between the first conveyor belt (13); when the cylinder (6) is started, the first slider (5) drives the bristles (10) on the cleaning roller (9) to contact and fit the circuit board; at the same time, the tensioning wheel (24) adjusts the tension of the first conveyor belt (13), and the ventilation hole (16) is opened under the action of the shielding plate (23).

4. The cleaning device for developing dry film on a circuit board according to claim 1, characterized in that: The invention also comprises an irradiation polymerization mechanism (25), wherein the irradiation polymerization mechanism (25) comprises a U-shaped plate (26) fixed on the frame, a second motor (27) being fixedly mounted at the center of the top end of the U-shaped plate (26), an output shaft of the second motor (27) extending to the first bevel gear (28) and the first screw shaft (29) in sequence, the two ends of the outer wall of the first bevel gear (28) being meshed and driven with a second bevel gear (31) fixed on the second screw shaft (30), the outsides of the first bevel gear (28) and the second bevel gear (31) being both placed in a cover body (32), the top end of the cover body (32) being fixedly connected to the U-shaped plate (26) via a column.

5. The cleaning device for developing dry film on a circuit board according to claim 4, characterized in that: A third slider (33) is spirally driven on the first screw shaft (29), and the bottom of the third slider (33) is connected to an ultraviolet irradiation lamp (35) via a sealing plate (34). The first screw shaft (29) and the second screw shaft (30) are arranged vertically.

6. The cleaning device for developing dry film on a circuit board according to claim 5, characterized in that: The second screw shaft (30) is spirally driven with a fourth slider (37) fixed on the moving rod (36); the bottom of the moving rod (36) is connected to the telescopic box (38); the top of the telescopic box (38) is provided with a semicircular hole (39); a circular hole corresponding to the sealing plate (34) is formed between the semicircular holes (39).

7. The cleaning device for developing dry film on a circuit board according to claim 4, characterized in that: An unwinder (40) disposed on a frame is provided between the irradiation polymerization mechanism (25) and the blowing cleaning mechanism (3), and the unwinder (40) comprises an unwinding wheel connected to an unwinding motor.

8. A method for cleaning a developed dry film on a circuit board, applied to a device for cleaning a developed dry film on a circuit board as claimed in any one of claims 1 to 7, characterized in that: The steps include: S1, a circuit board is placed on a carrier platform (2) and transported via a conveyor line (1), the cylinder (6) is started and drives the cleaning roller (9) to a corresponding height point, the first motor (8) is started and the surface of the circuit board is cleaned by the brush (10); S2, step S1: After the cylinder (6) is started, the ventilation hole (16) can be opened, and the transmission of the first conveyor belt (13) can be adjusted to be tighter. Under the action of mechanical transmission, the second rotating wheel (14) drives the rotating blade (17) to rotate, and the blowing and dust removal work is started; S3, the unwinding motor drives the unwinding wheel to rotate, and the dry film is cut in sections by a cutter or manual operation, so that the dry film is laid on the circuit board; S4, the second motor (27) is started, and under the action of the screw drive, the telescopic box (38) moves to the center, the sealing plate (34) moves downward and seals the circular hole, and a polymerization reaction occurs under the action of the ultraviolet irradiation lamp (35), so that the dry film increases its adhesive force and adheres to the circuit board.

Images