Automatic film tearing system

Abstract

The application relates to the technical field of printed circuit board production, and discloses an automatic film tearing system, which comprises a feeding device, a film tearing device is arranged on the right side of the feeding device, a discharging device is arranged on the rear side of the film tearing device, a temporary storage device is arranged above the discharging device, a feeding roller is rotationally connected to the top end of the feeding device, and a clamping plate is fixedly installed on the side wall of the feeding device. The substrate enters two film starting wheels, the two film starting wheels can be silica gel rollers or be provided with dust sticking paper on the top, the two film starting wheels tear the films on the upper side and the lower side of the substrate upwards and downwards respectively, air is blown into the space between the substrate and the protective film through the air blowing device during the film tearing process, the film tearing efficiency is improved, the protective film of the circuit board can be conveniently and quickly torn off, and the residual protective film is checked, so that the residual protective film does not cause defects in the subsequent process, and the production efficiency and quality of the circuit board are effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of printed circuit board production, and more particularly, to an automatic film tearing system. BACKGROUND

[0002] With the progress of science and technology, the electronic industry is also growing rapidly, and printed circuit boards (PCB) are also increasingly widely used. Because printed circuit boards have many advantages and are easy to assemble, they can be easily applied to various electronic products and equipment for standardized assembly, and can also be automated and mass-produced, thereby being widely used in various electronic products and equipment.

[0003] In the production process of printed circuit boards, before exposure, a photoresist layer and a film adhered to the surface of the photoresist layer are formed on the upper and lower surfaces of the substrate, respectively. After exposure, the film is peeled off to expose the photoresist layer, so that subsequent developing and etching procedures can be performed.

[0004] However, with the existing film peeling method, there is still a possibility of film residue, which can cause subsequent process defects. How to provide a convenient and fast film peeling method and equipment will help improve the production quality of printed circuit boards and reduce production costs. SUMMARY

[0005] In order to overcome the deficiencies of the prior art, the present application provides an automatic film tearing system, which has the advantages of being convenient and fast in peeling off the film as mentioned in the background.

[0006] To achieve the above purpose, the present application provides the following technical scheme: an automatic film tearing system, comprising a feeding device, a film tearing device is arranged on the right side of the feeding device, an output device is arranged on the rear side of the film tearing device, a temporary storage device is arranged above the output device, an input roller is rotatably connected to the top end of the feeding device, a clamping plate is fixedly installed on the side wall of the feeding device, an upper film conveying device is arranged above the film tearing device, a lower film storage is arranged below the rear end of the upper film conveying device, a lower film storage is arranged below the film tearing device, and an output roller is rotatably connected to the top end of the output device.

[0007] The film tearing device comprises an embossing plate and a film starting wheel, the embossing plate is located at the bottom end of the film tearing device, an embossing wheel is rotationally connected above the embossing plate, an embossing plate moving device, an embossing wheel lifting device and an embossing wheel horizontal moving device are fixedly installed at the top end of the embossing plate, the film starting wheel is rotationally connected at the middle part of the film tearing device, there are two film starting wheels and they are distributed above and below, a cleaning rubber wheel is arranged at the right side of the upper film starting wheel and below the lower film starting wheel, a film guide device is fixedly installed at the top end of the film tearing device, and a film tearing abnormality sensor is arranged at the middle part of the discharge roller.

[0008] The temporary storage device comprises a lifting seat, the lifting seat is movably connected to the rear side of the temporary storage device, a bearing support rod is rotationally connected to the front end of the lifting seat, a lifting motor is fixedly installed on the side wall of the temporary storage device, the lifting motor is in transmission connection with the bearing support rod, and a position sensor is fixedly installed on the side wall of the temporary storage device.

[0009] As a preferred technical solution of the present application, the film conveying device comprises a top shell, a moving block is slidably connected inside the top shell, a driving motor is fixedly installed at the rear side of the top shell, a ball screw is fixedly sleeved at the output end of the driving motor, a gas pump and a mounting plate are fixedly installed at the rear end and the bottom end of the moving block respectively, a connecting pipe is fixedly installed at the rear end of the gas pump, an extension pipe is fixedly installed at the rear end of the connecting pipe, and an adsorption pipe is fixedly installed at the right side of the mounting plate.

[0010] As a preferred technical solution of the present application, the film conveying device comprises a top shell, a moving block is slidably connected inside the top shell, a driving motor is fixedly installed at the rear side of the top shell, a ball screw is fixedly sleeved at the output end of the driving motor, a gas pump and a mounting plate are fixedly installed at the rear end and the bottom end of the moving block respectively, a connecting pipe is fixedly installed at the rear end of the gas pump, an extension pipe is fixedly installed at the rear end of the connecting pipe, and an adsorption pipe is fixedly installed at the right side of the mounting plate.

[0011] As a preferred technical solution of the present application, the front side of the film conveying device is provided with a controller for controlling the driving of the whole device.

[0012] As a preferred technical solution of the present application, the extension pipe is in communication with the outer box, the connecting block is fixedly connected with the inner box, the two ends of the reset spring are fixedly connected to the moving plate and the inner wall of the outer box respectively, and the air hole is located at the end of the moving plate away from the extension pipe.

[0013] As a preferred technical solution of the present application, the adsorption pipe is in communication with the connecting pipe through the gas pump, the connecting pipe is made of corrugated flexible pipe material, and the ball screw is engaged with the moving block.

[0014] As a preferred technical scheme of the present application, the bearing support rods are staggered with the discharge rollers, and the bearing support rods are divided into four groups from top to bottom, and the axes of the bearing support rods in each group are in the same horizontal plane.

[0015] As a preferred technical scheme of the present application, the film tearing device further comprises a blowing device for blowing air between the substrate and the protective film.

[0016] As a preferred technical scheme of the present application, the bottom end of the inner cavity of the outer box is fixedly provided with a sliding rail, and the bottom surface of the inner box is fixedly provided with a sliding strip which is slidingly connected in the sliding rail.

[0017] Compared with the prior art, the present application has the following advantages:

[0018] 1. The substrate enters the two film forming wheels, which can be silica gel rollers or have dust-sticking paper attached to the top, and the two film forming wheels tear the film on the upper and lower sides of the substrate upward and downward, respectively, and in the process of tearing the film, the blowing device blows air between the substrate and the protective film to increase the efficiency of film tearing, so that the protective film of the circuit board can be conveniently and quickly torn off, and the residual protective film can be checked to avoid defects in subsequent processes caused by residual protective film, thereby effectively improving the production efficiency and quality of the circuit board.

[0019] 2. The movable moving block is provided, and the air pump is arranged on the moving block, the air pump is used for sucking air outside into the adsorption pipe, when the adsorption pipe is located near the upper film, the flowing air current can drive the upper film to swing close to the adsorption pipe, when the upper film contacts the adsorption pipe, the upper film seals the adsorption pipe, thereby forming negative pressure in the adsorption pipe to adsorb and pull the upper film, and the adsorption mode does not need to align the pulling structure with the upper film, so that the operation is more simple and convenient.

[0020] 3. The air is sent into the outer box through the extension pipe, thereby increasing the pressure between the moving plate and the extension pipe, the moving plate is pushed to move in the direction of the air hole, when the moving plate moves below the air hole, the air sent by the extension pipe is discharged through the air hole, at this time, the atmospheric pressure between the moving plate and the extension pipe is restored, the connecting rod in the compressed state is reversely pushed back to the original position under the driving of the elasticity, and then the above steps are repeated, the connecting rod drives the inner box to continuously move left and right, the film in the inner box is shaken and stacked in the inner box, thereby reducing the waste of space, reducing the number of transfer, and reducing the labor intensity of the operator. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic view of the automatic film tearing system of the present application.

[0022] Figure 2Figure 1 is a schematic diagram of a part of the film tearing device of the automatic film tearing system of the present application;

[0023] Figure 3 Figure 2 is a schematic diagram of another part of the film tearing device of the automatic film tearing system of the present application;

[0024] Figure 4 Figure 3 is a schematic diagram of the discharge device and the temporary storage device of the automatic film tearing system of the present application;

[0025] Figure 5 Figure 4 is a schematic diagram of the connection of the film conveying device inside the structure of the present application;

[0026] Figure 6 Figure 5 is a schematic diagram of the connection of the box inside the structure of the present application;

[0027] Figure 7 Figure 6 is a schematic diagram of the cross-section of the box outside the structure of the present application;

[0028] Figure 8 Figure 7 is a schematic diagram of the cross-section of the gas box of the present application.

[0029] Figure 1 is a schematic diagram of a part of the film tearing device of the automatic film tearing system of the present application; DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] As Figures 1 to 8As shown, the present application provides an automatic film tearing system, which comprises a feeding device 1, a film tearing device 2 arranged on the right side of the feeding device 1, an output device 3 arranged on the rear side of the film tearing device 2, a temporary storage device 4 arranged above the output device 3, an input roller 5 rotatably connected to the top end of the feeding device 1, a clamping plate device 6 fixedly installed on the side wall of the feeding device 1, an upper film conveying device 7 arranged above the film tearing device 2, an upper film storage 8 arranged below the rear end of the upper film conveying device 7, a lower film storage 9 arranged below the film tearing device 2, and an output roller 10 rotatably connected to the top end of the output device 3;

[0032] The film tearing device 2 comprises an embossing plate 11 and a film lifting wheel 16, the embossing plate 11 is arranged at the bottom end of the film tearing device 2, the embossing plate 11 is rotatably connected with an embossing wheel 12 arranged above the embossing plate 11, the top end of the embossing plate 11 is fixedly installed with an embossing plate moving device 13, an embossing wheel lifting device 14 and an embossing wheel horizontal moving device 15, the film lifting wheel 16 is rotatably connected in the middle of the film tearing device 2, the film lifting wheel 16 has two and is arranged in an upper and lower distribution, the right side of the upper film lifting wheel 16 and the lower side of the lower film lifting wheel 16 are both provided with a cleaning rubber wheel 17, the top end of the film tearing device 2 is fixedly installed with a film guide device 18, and the middle of the output roller 10 is provided with a film tearing abnormality sensor 19.

[0033] The temporary storage device 4 comprises a lifting seat 20 movably connected to the rear side of the temporary storage device 4, the front end of the lifting seat 20 is rotatably connected with a bearing support rod 21, the side wall of the temporary storage device 4 is fixedly installed with a lifting motor 22, the lifting motor 22 is drivingly connected with the bearing support rod 21, and the side wall of the temporary storage device 4 is fixedly installed with a position sensor 23.

[0034] The output roller 10 and the input roller 5 are synchronously rotatable to ensure the stability of the conveying substrate, the embossing wheel 12 can move horizontally along the edge of the substrate to roll press the edge of the protective film on the substrate, thereby generating embossed lines on the protective film, the position sensor 23 is used to detect whether there is residual protective film on the substrate, thereby effectively avoiding residual protective film on the substrate, improving the production quality and yield of the printed circuit board, the substrate enters the two film lifting wheels 16, the two film lifting wheels 16 can be silica gel rollers or have sticky dust paper pasted thereon, the two film lifting wheels 16 tear the films on the upper and lower sides of the substrate upward and downward respectively, and air is blown into the space between the substrate and the protective film through a blowing device during the film tearing process to increase the film tearing efficiency, the protective film of the circuit board can be conveniently and quickly removed, and the residual protective film can be checked to avoid defects caused by residual protective film in subsequent processes, thereby effectively improving the production efficiency and quality of the circuit board.

[0035] The upper film conveying device 7 comprises a top shell 71, a moving block 72 is slidably connected inside the top shell 71, a driving motor 73 is fixedly installed at the rear side of the top shell 71, a ball screw 74 is fixedly sleeved on the output end of the driving motor 73, a gas pump 75 and a mounting plate 77 are fixedly installed at the rear end and the bottom end of the moving block 72 respectively, the rear end of the gas pump 75 is fixedly installed with a connecting pipe 76, the rear end of the connecting pipe 76 is fixedly installed with an extension pipe 79, and the right side of the mounting plate 77 is fixedly installed with a suction pipe 78;

[0036] The moving block 72 can move, and the gas pump 75 is arranged on the moving block 72. Air outside is sucked into the suction pipe 78 through the gas pump 75. When the suction pipe 78 is located near the upper film, the flowing air flow can drive the upper film to swing close to the suction pipe 78. When the upper film contacts the suction pipe 78, the upper film closes the suction pipe 78, so that a negative pressure is formed in the suction pipe 78, and the upper film is adsorbed and pulled. The adsorption method does not need to align the pulling structure with the upper film, and the operation is more simple and convenient.

[0037] The upper film storage 8 comprises an outer box 81 and an inner box 82. The inner box 82 is located inside the outer box 81. A gas box 83 is fixedly installed on the inner wall of the outer box 81. A moving plate 84 is slidably connected to the middle part of the gas box 83. A connecting rod 85 is fixedly installed on the end of the moving plate 84 away from the extension pipe 79. A connecting block 86 is fixedly installed on the other end of the connecting rod 85. A return spring 87 is sleeved on the surface of the connecting rod 85. Gas holes 88 are formed at the upper and lower ends of the inner box 82.

[0038] Air is sent into the outer box 81 through the extension pipe 79, so as to increase the pressure between the moving plate 84 and the extension pipe 79, and drive the moving plate 84 to move in the direction of the gas hole 88. When the moving plate 84 moves below the gas hole 88, the air sent by the extension pipe 79 is discharged through the gas hole 88. At this time, the atmospheric pressure between the moving plate 84 and the extension pipe 79 is restored, and the connecting rod 85 in the compressed state is reversely pushed back to the original position under the elastic force. Then the above steps are repeated, so that the connecting rod 85 drives the inner box 82 to continuously move left and right, and the thin film in the inner box 82 is shaken and stacked in the inner box 82, thereby reducing the waste of space and reducing the number of transportation, and reducing the labor intensity of the operator.

[0039] A controller 24 is arranged at the front side of the upper film conveying device 7, which is used to control the driving of the whole device.

[0040] The position sensor 23 can provide the start of the controller 24, so as to control the start and stop of the device and the working angle of each driver.

[0041] The extension pipe 79 is communicated with the outer box 81, the connecting block 86 is fixedly connected with the inner box 82, the two ends of the reset spring 87 are fixedly connected with the moving plate 84 and the inner wall of the outer box 81 respectively, and the air hole 88 is located at the end of the moving plate 84 away from the extension pipe 79.

[0042] The reset spring 87 is arranged on the moving plate 84 and the inner wall of the outer box 81, so that sufficient elastic force can be provided to push the moving plate 84 back to the original position, and the reciprocating movement of the inner box 82 is continuously driven.

[0043] The adsorption pipe 78 is communicated with the connecting pipe 76 through the air pump 75, the connecting pipe 76 is made of corrugated hose material, and the ball screw 74 is engaged with the moving block 72.

[0044] The connecting pipe 76 made of corrugated hose material can smoothly connect the air pump 75 and the extension pipe 79 when the moving block 72 moves forward and backward.

[0045] The bearing support rod 21 is staggered with the discharge roller 10, and the bearing support rod 21 is divided into four groups from top to bottom, and the axis of each group of bearing support rods 21 is in the same horizontal plane.

[0046] The bearing support rod 21 can move up and down smoothly, avoiding interference with the discharge roller 10, and ensuring smooth operation of the device.

[0047] The film tearing device 2 further comprises a blowing device, which blows air between the substrate and the protective film.

[0048] The blowing device can blow air between the substrate and the protective film to increase the efficiency of film tearing and avoid damaging the substrate and the photoresist dry film on the substrate.

[0049] The bottom end of the inner cavity of the outer box 81 is fixedly installed with a sliding rail, and the bottom surface of the inner box 82 is fixedly installed with a sliding strip which is slidingly connected in the sliding rail.

[0050] The sliding rail and the sliding strip are arranged to position the vertical position of the outer box 81 and the inner box 82, and provide guidance and support for the reciprocating movement of the inner box 82.

[0051] The working principle and use process of the present application are as follows:

[0052] The substrate raw material is placed on the feeding roller 5 and transported to the right side, and when passing through the clamp plate device 6, the substrate is guided to the middle by the clamp plate device 6 and centered.

[0053] When the substrate enters the film tearing device 2, the embossing wheel 12 is driven to move by the embossing plate moving device 13, the embossing wheel lifting device 14 and the embossing wheel horizontal moving device 15, the embossing plate 11 is pressed on the substrate to avoid movement when embossing, and the embossing wheel 12 can move horizontally along the edge of the substrate to roll on the edge of the protective film on the substrate, so as to generate embossed lines on the protective film. When the substrate enters the two film lifting wheels 16, the two film lifting wheels 16 can be silica gel rollers or have dust-sticking paper pasted on the top, and the two film lifting wheels 16 can tear the film on the upper and lower sides of the substrate upward and downward respectively, and air is blown into the space between the substrate and the protective film by the air blowing device during the film tearing process, so as to increase the film tearing efficiency and avoid damaging the substrate and the dry film of the photoresist on the substrate. The cleaning rubber wheel 17 in contact with the film lifting wheel 16 can clean the film lifting wheel 16;

[0054] The torn lower film directly falls downward into the lower film storage 9 for storage, and the upper film is guided into the upper film conveying device 7 by the film guiding device 18.

[0055] The driving motor 73 drives the ball screw 74 to rotate, and then drives the moving block 72 to move forward to the upper film. The air pump 75 is started to suck external air into the adsorption tube 78 and transport the air to the connecting tube 76 and the extension tube 79. When the adsorption tube 78 is close to the upper film, the upper film is adsorbed on the adsorption tube 78, and then the upper film is transported backward to the upper film storage 8. Then the air pump 75 is closed, and the upper film falls downward to the upper film storage 8.

[0056] After the air is sucked into the extension tube 79, the extension tube 79 sends the air into the outer box 81, so as to increase the pressure between the moving plate 84 and the extension tube 79, and push the moving plate 84 to move to the direction of the air hole 88. When the moving plate 84 moves below the air hole 88, the air sent by the extension tube 79 is discharged through the air hole 88. At this time, the atmospheric pressure between the moving plate 84 and the extension tube 79 is restored, and the connecting rod 85 in the compressed state is pushed back to the original position under the elasticity of the elastic belt. Then the above steps are repeated to realize the continuous left and right movement of the inner box 82 driven by the connecting rod 85, so that the film in the inner box 82 is shaken and stacked flat in the inner box 82.

[0057] When the substrate enters the discharging device 3, the film tearing abnormality sensor 19 detects whether there is residual protective film on the substrate. If there is no residual, the substrate is directly conveyed away by the discharging roller 10. If there is residual, the substrate with residual is transported upward to the temporary storage device 4 by the position sensor 23 driving the bearing support rod 21 to move upward when the bearing support rod 21 is located at the position.

[0058] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and illustrative figures, it should be apparent that the scope of the present application is not limited to these specific embodiments.

[0059] While the embodiments of the application have been shown and described herein, it will be understood by those of ordinary skill in the art that various changes, modifications, alternatives, and variations can be made to the embodiments without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. Automatic film tearing system, including a feeding device (1), characterized in that: A film tearing device (2) is provided on the right side of the feeding device (1), a discharging device (3) is provided on the rear side of the film tearing device (2), a temporary storage device (4) is provided above the discharging device (3), a feeding roller (5) is rotatably connected to the top of the feeding device (1), a clamping device (6) is fixedly installed on the side wall of the feeding device (1), an upper film conveying device (7) is provided above the film tearing device (2), an upper film storage device (8) is provided below the rear end of the upper film conveying device (7), a lower film storage device (9) is provided below the film tearing device (2), and a discharging roller (10) is rotatably connected to the top of the discharging device (3); The film tearing device (2) comprises an embossing plate (11) and a film peeling wheel (16), the embossing plate (11) is located at the bottom end of the film tearing device (2), the embossing wheel (12) is rotatably connected above the embossing plate (11), the top of the embossing plate (11) is fixedly installed with an embossing plate moving device (13), an embossing wheel lifting device (14) and an embossing wheel horizontal moving device (15), the film peeling wheel (16) is rotatably connected to the middle part of the film tearing device (2), there are two film peeling wheels (16) and they are distributed up and down, a cleaning rubber wheel (17) is provided on the right side of the upper film peeling wheel (16) and below the lower film peeling wheel (16), a guide mold device (18) is fixedly installed at the top of the film tearing device (2), and a film tearing abnormality sensor (19) is provided in the middle part of the discharging roller (10); The temporary storage device (4) includes a lifting seat (20), the lifting seat (20) is movably connected to the rear side of the temporary storage device (4), the front end of the lifting seat (20) is rotatably connected to a load-bearing support rod (21), a lifting motor (22) is fixedly installed on the side wall of the temporary storage device (4), the lifting motor (22) is transmission-connected to the load-bearing support rod (21), and a position sensor (23) is fixedly installed on the side wall of the temporary storage device (4); The upper film conveying device (7) comprises a top shell (71), a moving block (72) is slidably connected to the interior of the top shell (71), an air pump (75) and a mounting plate (77) are fixedly mounted on the rear end and bottom end of the moving block (72), a connecting pipe (76) is fixedly mounted on the rear end of the air pump (75), and an extension pipe (79) is fixedly mounted on the rear end of the connecting pipe (76); The upper film storage device (8) comprises an outer box (81) and an inner box (82), wherein the inner box (82) is located inside the outer box (81), an air box (83) is fixedly mounted on the inner wall of the outer box (81), a movable plate (84) is slidably connected to the middle of the air box (83), a connecting rod (85) is fixedly mounted on one end of the movable plate (84) away from the extension tube (79), a connecting block (86) is fixedly mounted on the other end of the connecting rod (85), a return spring (87) is sleeved on the surface of the connecting rod (85), and air holes (88) are provided at the upper and lower ends of the inner box (82); After air is introduced into the extension tube (79), the air is sent into the outer box (81) through the extension tube (79). At this time, the air pushes the movable plate (84) to move in the direction of the air hole (88). When the movable plate (84) moves below the air hole (88), the air sent in by the extension tube (79) is discharged through the air hole (88). The connecting rod (85) drives the movable plate (84) to push back and reset through the reset spring (87), so that the connecting rod (85) continuously drives the inner box (82) to move left and right.

2. The automatic film tearing system according to claim 1, characterized in that: A driving motor (73) is fixedly mounted on the rear side of the top shell (71), a ball screw (74) is fixedly sleeved on the output end of the driving motor (73), and an adsorption tube (78) is fixedly mounted on the right side of the mounting plate (77).

3. The automatic film tearing system according to claim 1, characterized in that: The front side of the upper film conveying device (7) is provided with a controller (24) for controlling the drive of the entire device.

4. The automatic film tearing system according to claim 1, characterized in that: The extension tube (79) is communicated with the outer box (81), the connection block (86) is fixedly connected to the inner box (82), the two ends of the return spring (87) are respectively fixedly connected to the movable plate (84) and the inner wall of the outer box (81), and the air hole (88) is located at the end of the movable plate (84) away from the extension tube (79).

5. The automatic film tearing system according to claim 2, characterized in that: The adsorption tube (78) is communicated with the connecting tube (76) through the air pump (75), and the connecting tube (76) is made of a corrugated hose material. The ball screw (74) is engaged with the moving block (72).

6. The automatic film tearing system according to claim 1, characterized in that: The load-bearing support rods (21) and the discharge rollers (10) are arranged in an interlaced manner. The load-bearing support rods (21) are divided into four groups from top to bottom, and the axes of the load-bearing support rods (21) in each group are on the same horizontal plane.

7. The automatic film tearing system according to claim 1, characterized in that: The film tearing device (2) also includes an air blowing device for blowing air into between the substrate and the protective film.

8. The automatic film tearing system according to claim 1, characterized in that: A slide rail is fixedly mounted on the bottom end of the inner cavity of the outer box (81), and a slide bar is fixedly mounted on the bottom surface of the inner box (82), and the slide bar is slidably connected in the slide rail.

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