A conductive film double-sided etching device

Abstract

This invention provides a conductive film double-sided etching device, including a frame, and an unwinding roller and a take-up roller respectively rotatably mounted on the frame. A conductive film is wound on the unwinding roller, and the ends of the conductive film are detachably connected to the take-up roller. A motor for driving the take-up roller is mounted on the frame. Laser etching modules one and two for etching are respectively mounted on the upper and lower sides of the conductive film on the frame. Guide roller one and guide roller two are also rotatably mounted on the frame in sequence. A limit roller is rotatably mounted between guide roller one and the unwinding roller, and a film-attaching support plate is mounted between the unwinding roller and the limit roller. The conductive film double-sided etching device provided by this invention simultaneously laser-etches both sides of the conductive film using laser etching modules one and two, improving the etching efficiency of the conductive film, avoiding manual film threading, and facilitating quick and easy installation of the conductive film roll, further improving the processing efficiency of the conductive film.

Description

Technical Field

[0001] This utility model relates to the field of laser etching equipment technology, specifically to a conductive film double-sided etching device. Background Technology

[0002] Transparent conductive films are important optical components in the display field, with ITO transparent conductive films currently being the most widely used. ITO thin films are the most commonly used conductive film material for transparent electrodes in liquid crystal displays, plasma displays, electroluminescent displays, touch screens, solar cells, and other electronic instruments. In touch screen manufacturing, conductive film etching refers to the chemical or physical processing of indium tin oxide thin films used to prepare finely patterned ITO conductive films for electrodes, transparent conductive layers, and other electronic devices. As a core functional material, the precision of ITO conductive film patterning directly affects the performance indicators of touch sensors.

[0003] Chinese Utility Model Patent Publication No. CN217689689U discloses an ITO film etching device for liquid crystal display screen manufacturing, comprising a base and a mounting shell. A top plate is fixedly mounted on the top of the mounting shell. A moving mechanism is provided inside the mounting shell, comprising a motor, a threaded rod, a bearing, a slider, and a fixing plate. The motor is fixedly mounted on one side of the mounting shell, and the output end of the motor is drivenly connected to the threaded rod. The other end of the threaded rod is fixedly connected to the inside of the bearing, which is fixed to one side of the inside of the mounting shell. A slider is threadedly connected to the surface of the threaded rod, and the bottom of the slider is fixed to the fixing plate via a support plate. This improves the efficiency and quality of ITO film etching and reduces losses.

[0004] However, the existing ITO film etching apparatuses often require etching one side of the conductive film first, and then flipping the ITO film to etch the other side after etching. This results in low etching efficiency of the conductive film. This solution addresses this technical problem. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a conductive film double-sided etching device. It simultaneously etches both sides of the conductive film using laser etching modules one and two, improving the etching efficiency. A tension control component ensures a more constant tension on the conductive film. A film support plate guides the second conductive film onto the winding roller, eliminating the need for manual film threading. This makes the installation of the conductive film roll convenient and quick, further improving the processing efficiency of the conductive film.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a conductive film double-sided etching device, including a frame, and further including an unwinding roller and a winding roller respectively rotatably mounted on the frame, wherein a conductive film is wound on the unwinding roller, and the end of the conductive film is detachably connected to the winding roller, and a motor for driving the winding roller to rotate is provided on the frame;

[0007] The frame is provided with a laser etching module one and a laser etching module two for etching on the upper and lower sides of the conductive film, respectively. Guide roller one and guide roller two are also rotatably mounted on the frame. The conductive film is positioned around guide roller one and guide roller two. A limit roller is rotatably mounted between guide roller one and unwind roller. The conductive film is positioned around the limit roller. The frame is provided with a positioning component for pressing the conductive film onto the limit roller. A brake component is provided on the unwind roller. A controller is provided on the frame. The motor, laser etching module one, laser etching module two, positioning component, and brake component are electrically connected to the controller. Furthermore, laser etching module one and laser etching module two are implemented using existing technology, which will not be described in detail here.

[0008] A film-attaching support plate is provided between the unwinding roller and the limiting roller. The film-attaching support plate is used to support the first and last ends of the two conductive films. The two ends of the film-attaching support plate are respectively connected to the frame.

[0009] The positioning assembly includes support blocks respectively disposed at both ends of the frame, guide posts respectively slidably disposed on the top sides of the two support blocks, a connecting rod fixedly connected between the two guide posts, and a pressure block disposed on the side of the connecting rod. The inner side of the pressure block is provided with an arc-shaped rubber pad for pressing the conductive film onto the limiting roller. A return spring is sleeved on the outer side of the guide post. One end of the return spring is connected to the support block, and the other end of the return spring is connected to the connecting rod. An electromagnet is disposed on the side of the support block close to the connecting rod. An iron block is disposed on the side of the connecting rod. The electromagnet and the iron block can be detachably attracted together. The electromagnet is electrically connected to the controller.

[0010] The unwinding roller is coaxially equipped with a brake disc, and the brake assembly includes an electric cylinder fixedly mounted on the frame and a brake block connected to the telescopic end of the electric cylinder. The inner side of the brake block is in separable contact with the brake disc.

[0011] A tension control assembly is provided between the limiting roller and the guide roller. The tension control assembly includes support rods vertically arranged on both sides of the frame, linear bearings slidably sleeved on the outer sides of the two support rods, and a buffer roller connected between the two linear bearings. The conductive film passes through the bottom of the buffer roller. Stabilizing rods parallel to the support rods are provided at both ends of the buffer roller. One end of the stabilizing rod is connected to the buffer roller, and a counterweight is provided between the other ends of the two stabilizing rods. A buffer spring is sleeved on the bottom outer side of the support rod. One end of the buffer spring is connected to the frame, and the other end of the buffer spring is connected to the linear bearing.

[0012] Both the unwinding roller and the take-up roller are provided with air shafts on their outer sides, and the ends of the conductive film are detachably disposed on the unwinding roller and the take-up roller respectively through the air shafts.

[0013] The side of the frame is equipped with a photoelectric sensor for detecting the position of the linear bearing, and the photoelectric sensor is electrically connected to the controller.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] (1) Laser etching is performed on both sides of the conductive film simultaneously by laser etching module one and laser etching module two, which improves the etching efficiency of the conductive film. The first conductive film roll is pressed on the limiting roller by the positioning component, and the second conductive film roll is fixed on the unwinding roller by the braking component. The tail of the first conductive film and the end of the second conductive film are temporarily fixed on the film receiving support plate by tape, thereby guiding the second conductive film to the winding roller. This avoids manual film threading, and the installation of the conductive film roll is convenient and quick, further improving the processing efficiency of the conductive film.

[0016] (2) By having the conductive film bypass the buffer roller of the tension control component, the linear bearing drives the buffer roller to move up and down on the outside of the support rod, making the tension received by the conductive film during etching more stable, the conductive film more flat, and improving the precision of laser etching.

[0017] (3) Two photoelectric sensors are installed on the frame to detect the upper and lower limits of the linear bearing respectively. When the photoelectric sensor detects that the linear bearing is at the lower limit, the brake assembly is activated to increase the friction on the brake disc and reduce the speed of the unwinding roller. When the photoelectric sensor detects that the linear bearing is at the upper limit, the brake assembly is separated from the brake disc, making the delivery of the conductive film safer and more reliable. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 3 This is a side sectional view of the present invention.

[0021] Figure 4 This is a schematic diagram of the tension control component of this utility model;

[0022] Figure 5 This is a schematic diagram of the connection structure between the brake assembly and the brake disc of this utility model;

[0023] Figure 6 This is a schematic diagram of the positioning component of this utility model;

[0024] Figure 7 This is a utility model Figure 6 A magnified structural diagram of part A.

[0025] In the diagram: 1. Frame; 11. Laser etching module one; 12. Laser etching module two; 13. Guide roller one; 14. Guide roller two; 15. Limiting roller; 16. Film bonding support plate; 2. Unwinding roller; 21. Brake disc; 3. Rewinding roller; 31. Motor; 4. Conductive film; 5. Positioning assembly; 51. Support block; 52. Guide column; 53. Connecting rod; 54. Pressure block; 541. Arc-shaped rubber pad; 55. Return spring; 56. Electromagnet; 57. Iron block; 6. Braking assembly; 61. Electric cylinder; 62. Brake block; 7. Controller; 8. Tension control assembly; 81. Support rod; 82. Linear bearing; 821. Photoelectric sensor; 83. Buffer roller; 84. Stabilizing rod; 85. Counterweight; 86. Buffer spring. Detailed Implementation

[0026] To more clearly illustrate the technical features of this solution, the following detailed implementation method will be used to explain the solution.

[0027] See Figures 1-7 A conductive film double-sided etching apparatus includes a frame 1, and an unwinding roller 2 and a take-up roller 3 respectively rotatably mounted on the frame 1. A conductive film 4 is wound on the unwinding roller 2, and the end of the conductive film 4 is detachably connected to the take-up roller 3. A motor 31 for driving the take-up roller 3 to rotate is mounted on the frame 1.

[0028] Laser etching module 11 and laser etching module 2 12 for etching are respectively arranged on the upper and lower sides of the conductive film 4 on the frame 1. Guide roller 13 and guide roller 2 14 are also arranged rotatably on the frame 1. The conductive film 4 is arranged around the guide roller 13 and guide roller 2 14. A limit roller 15 is arranged rotatably between the guide roller 13 and the unwinding roller 2. The conductive film 4 is arranged around the limit roller 15. A positioning component 5 for pressing the conductive film 4 onto the limit roller 15 is provided on the frame 1. A brake component 6 is provided on the unwinding roller 2. A controller 7 is provided on the frame 1. The motor 31, laser etching module 11, laser etching module 2 12, positioning component 5 and brake component 6 are electrically connected to the controller 7.

[0029] A film-attaching support plate 16 is provided between the unwinding roller 2 and the limiting roller 15. The film-attaching support plate 16 is used to support the first and last ends of the two conductive films 4. The two ends of the film-attaching support plate 16 are respectively connected to the frame 1.

[0030] The positioning component 5 includes support blocks 51 respectively disposed at both ends of the frame 1, guide posts 52 respectively slidably disposed on the top sides of the two support blocks 51, connecting rod 53 fixedly connected between the two guide posts 52, and pressure block 54 disposed on the side of the connecting rod 53. The inner side of the pressure block 54 is provided with an arc-shaped rubber pad 541 for pressing the conductive film 4 onto the limiting roller 15. The outer side of the guide post 52 is provided with a return spring 55. One end of the return spring 55 is connected to the support block 51, and the other end of the return spring 55 is connected to the connecting rod 53. An electromagnet 56 is disposed on the side of the support block 51 close to the connecting rod 53. An iron block 57 is disposed on the side of the connecting rod 53. The electromagnet 56 and the iron block 57 can be detachably attracted together. The electromagnet 56 is electrically connected to the controller 7.

[0031] The unwinding roller 2 is coaxially provided with a brake disc 21. The brake assembly 6 includes an electric cylinder 61 fixedly mounted on the frame 1 and a brake block 62 connected to the telescopic end of the electric cylinder 61. The inner side of the brake block 62 is in separable contact with the brake disc 21.

[0032] A tension control assembly 8 is provided between the limiting roller 15 and the guide roller 13. The tension control assembly 8 includes support rods 81 vertically arranged on both sides of the frame 1, linear bearings 82 slidably sleeved on the outside of the two support rods 81, and a buffer roller 83 connected between the two linear bearings 82. The conductive film 4 passes through the bottom of the buffer roller 83. Stabilizing rods 84 parallel to the support rods 81 are provided at both ends of the buffer roller 83. One end of the stabilizing rod 84 is connected to the buffer roller 83. A counterweight 85 is provided between the other ends of the two stabilizing rods 84. A buffer spring 86 is sleeved on the bottom outside of the support rod 81. One end of the buffer spring 86 is connected to the frame 1, and the other end of the buffer spring 86 is connected to the linear bearing 82.

[0033] Both the unwinding roller 2 and the take-up roller 3 are provided with air shafts on their outer sides. The ends of the conductive film 4 are detachably mounted on the unwinding roller 2 and the take-up roller 3 via the air shafts. Specifically, the film roll of the conductive film 4 is wound on the core cylinder, and the core cylinder is fixed on the outer side of the air shaft.

[0034] A photoelectric sensor 821 for detecting the position of the linear bearing 82 is provided on the side of the frame 1. The photoelectric sensor 821 is electrically connected to the controller 7. Specifically, there are two photoelectric sensors 821, which are used to detect the upper limit and lower limit of the linear bearing 82 respectively. This avoids damage to the conductive film 4 due to excessive tension, and also avoids unevenness of the conductive film 4 due to insufficient tension, which would affect the etching quality.

[0035] The specific working process of this utility model:

[0036] In use, the conductive film 4 is installed on the air shaft of the unwinding roller 2, and the end of the conductive film 4 is passed through the limiting roller 15, the buffer roller 83, the first guide roller 13, and the second guide roller 14 in sequence, and then connected to the air shaft of the take-up roller 3 to complete the installation of the conductive film 4.

[0037] The motor 31 is started, and the motor 31 drives the take-up roller 3 to rotate. The conductive film 4 passes between the laser etching modules 11 and 212. The take-up roller 3 drives the film roll of the conductive film 4 to be wound from the unwinding roller 2 onto the take-up roller 3. Under the action of the counterweight 85 of the buffer roller 83 in the tension control component 8, the tension on the conductive film 4 is more stable, and the conductive film 4 is stretched and unfolded more straight. When the conductive film 4 is transported to the position that needs to be etched, the laser etching modules 11 and 212 are started to etch the two sides of the conductive film 4 simultaneously. When the conductive film 4 is etched to the end of the film roll, the take-up roller 3 pulls the conductive film 4. The other end of the conductive film 4 is fixed to the air shaft through the core cylinder, which increases the tension of the conductive film 4. The linear bearing 82 of the tension control component 8 drives the buffer roller 83 to move upward along the support rod 81. When the photoelectric sensor 821 senses that the linear bearing 82 has risen and passed, it sends a signal to the controller 7. The controller 7 sends a command to the motor 31 to stop rotating and to the laser etching module 11 and the laser etching module 212 to stop etching. At the same time, the controller 7 sends a signal to the electromagnet 56 of the positioning component 5. The electromagnet 56 attracts the iron block 57 on the connecting rod 53, so that the connecting rod 53 slides along the guide post 52. The connecting rod 53 drives the arc-shaped rubber pad 541 on the pressure block 54 to press the conductive film 4 onto the limit roller 15. The controller 7 sends a signal to the electric cylinder 61 of the brake component 6. The electric cylinder 61 extends and contacts the brake block 62 with the brake disc 21, fixing the unwinding roller 2.

[0038] When the conductive film 4 is clamped and fixed on the limiting roller 15, the core of the conductive film 4 is unloaded from the outside of the unwinding roller 2, and the second conductive film 4 roll is guided to the end of the second roll onto the film receiving support plate 16. After the end of the first roll is cut off, it is also placed on the film receiving support plate 16 and aligned with the end of the second roll. Then, they are glued together with tape to complete the connection of the two conductive film 4 rolls.

[0039] Subsequently, the controller 7 drives the arc-shaped rubber pad 541 on the pressure block 54 away from the limiting roller 15, the positioning component 5 releases the conductive film 4, and then the motor 31 is started. The end of the second conductive film 4 is pulled by the tail of the first conductive film 4 on the take-up roller 3 and guided to the take-up roller 3. Then the motor 31 stops, the tape is peeled off between the two conductive films 4, the core of the first conductive film 4 on the take-up roller 3 is removed and the core of the second conductive film 4 is installed. The end of the second conductive film 4 is firmly attached to the core, and the installation of the second conductive film 4 is completed.

[0040] After the second conductive film 4 roll is installed, the motor 31 is started, and the brake assembly 6 is controlled by the controller 7 to release the brake disc 21. The motor 31 drives the take-up roller 3 to transport the conductive film 4 to be etched between the laser etching module 11 and the laser etching module 22, so as to perform double-sided synchronous etching on the conductive film 4, thereby completing the etching of the second conductive film 4 roll.

[0041] Laser etching is performed simultaneously on both sides of the conductive film 4 by laser etching module 11 and laser etching module 22, which improves the etching efficiency of the conductive film 4. The first conductive film 4 roll is pressed onto the limiting roller 15 by the positioning component 5, and the second conductive film 4 roll is fixed onto the unwinding roller 2 by the braking component 6. The tail of the first conductive film 4 and the end of the second conductive film 4 are temporarily fixed on the film receiving support plate 16 with tape, thereby guiding the second conductive film 4 onto the take-up roller 3. This avoids the manual film threading operation of passing the conductive film 4 through the limiting roller 15, guide roller 13, buffer roller 83 and guide roller 2 14. The installation of the conductive film 4 roll is convenient and quick, further improving the processing efficiency of the conductive film 4.

[0042] By having the conductive film 4 bypass the buffer roller 83 of the tension control component 8, the linear bearing 82 drives the buffer roller 83 to move up and down outside the support rod 81, making the tension received by the conductive film 4 during etching more stable, the conductive film 4 flatter, and improving the precision of laser etching.

[0043] The frame 1 is equipped with two photoelectric sensors 821, which are used to detect the upper and lower limits of the linear bearing 82 respectively. When the photoelectric sensor 821 detects that the linear bearing 82 is at the lower limit, the brake assembly 6 is activated to increase the friction on the brake disc 21 and reduce the speed of the unwinding roller 2. When the photoelectric sensor 821 detects that the linear bearing 82 is at the upper limit, the brake assembly 6 separates from the brake disc 21, making the conveying of the conductive film 4 safer and more reliable.

[0044] Technical features not described in detail in this solution are based on conventional operations and general understanding of those skilled in the art, and are therefore not elaborated upon here. Technical features not described in this utility model can be implemented using existing technology, and will not be repeated here. Of course, the above description is not intended to limit this utility model, nor is it limited to the examples given above. Any changes, modifications, additions, or substitutions made by those skilled in the art within the scope of this utility model should also fall within the protection scope of this utility model.

Claims

1. A conductive film double-sided etching apparatus, comprising a frame (1), characterized in that, It also includes an unwinding roller (2) and a winding roller (3) that are rotatably mounted on the frame (1). A conductive film (4) is wound on the unwinding roller (2). The end of the conductive film (4) is detachably connected to the winding roller (3). A motor (31) for driving the winding roller (3) to rotate is provided on the frame (1). The frame (1) is provided with a laser etching module 1 (11) and a laser etching module 2 (12) for etching on the upper and lower sides of the conductive film (4), respectively. The frame (1) is also provided with a guide roller 1 (13) and a guide roller 2 (14) in sequence. The conductive film (4) is arranged around the guide roller 1 (13) and the guide roller 2 (14). A limit roller (15) is arranged between the guide roller 1 (13) and the unwinding roller (2). The conductive film (4) is arranged around the limit roller (15). The frame (1) is provided with a positioning component (5) for pressing the conductive film (4) onto the limit roller (15). The unwinding roller (2) is provided with a brake component (6). The frame (1) is provided with a controller (7). The motor (31), the laser etching module 1 (11), the laser etching module 2 (12), the positioning component (5) and the brake component (6) are electrically connected to the controller (7). A film-attaching support plate (16) is provided between the unwinding roller (2) and the limiting roller (15). The film-attaching support plate (16) is used to support the first and last ends of the two conductive films (4). The two ends of the film-attaching support plate (16) are respectively connected to the frame (1).

2. The conductive film double-sided etching apparatus according to claim 1, characterized in that, The positioning assembly (5) includes support blocks (51) respectively disposed at both ends of the frame (1), guide posts (52) respectively slidably disposed on the top sides of the two support blocks (51), a connecting rod (53) fixedly connected between the two guide posts (52), and a pressure block (54) disposed on the side of the connecting rod (53). The inner side of the pressure block (54) is provided with an arc-shaped rubber pad (541) for pressing the conductive film (4) onto the limiting roller (15). The guide posts (52) A return spring (55) is sleeved on the outside. One end of the return spring (55) is connected to the support block (51), and the other end of the return spring (55) is connected to the connecting rod (53). An electromagnet (56) is provided on the side of the support block (51) close to the connecting rod (53). An iron block (57) is provided on the side of the connecting rod (53). The electromagnet (56) and the iron block (57) can be detachably attracted. The electromagnet (56) is electrically connected to the controller (7).

3. The conductive film double-sided etching apparatus according to claim 2, characterized in that, The unwinding roller (2) is coaxially provided with a brake disc (21), and the brake assembly (6) includes an electric cylinder (61) fixedly mounted on the frame (1) and a brake block (62) connected to the telescopic end of the electric cylinder (61). The inner side of the brake block (62) is in separable contact with the brake disc (21).

4. The conductive film double-sided etching apparatus according to claim 3, characterized in that, A tension control assembly (8) is provided between the limiting roller (15) and the guide roller (13). The tension control assembly (8) includes support rods (81) vertically arranged on both sides of the frame (1), linear bearings (82) slidably sleeved on the outside of the two support rods (81), and a buffer roller (83) connected between the two linear bearings (82). The conductive film (4) passes through the bottom of the buffer roller (83). The buffer roller (83) has a stabilizing rod (84) parallel to the support rod (81) at both ends. One end of the stabilizing rod (84) is connected to the buffer roller (83). A counterweight (85) is provided between the other ends of the two stabilizing rods (84). A buffer spring (86) is sleeved on the bottom side of the support rod (81). One end of the buffer spring (86) is connected to the frame (1), and the other end of the buffer spring (86) is connected to the linear bearing (82).

5. The conductive film double-sided etching apparatus according to claim 1, characterized in that, Both the unwinding roller (2) and the winding roller (3) are provided with air shafts on their outer sides. The ends of the conductive film (4) are respectively detachably disposed on the unwinding roller (2) and the winding roller (3) through the air shafts.

6. The conductive film double-sided etching apparatus according to claim 4, characterized in that, The side of the frame (1) is provided with a photoelectric sensor (821) for detecting the position of the linear bearing (82), and the photoelectric sensor (821) is electrically connected to the controller (7).

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