Optical film double station laser drilling equipment

Abstract

This invention discloses a dual-station laser drilling device for optical films, comprising an unwinding mechanism, a rewinding mechanism, a housing, a first linear motor, a first laser, a second linear motor, a second laser, a control system, a support, and a CCD camera. A pair of cold-blowing mechanisms are arranged on the right side of the housing, with the optical film body passing through the pair of cold-blowing mechanisms. Each cold-blowing mechanism includes an air inlet pipe and a distributor. The distributor has an inner cavity, and the air inlet pipe communicates with the inner cavity of the distributor. The distributor has a right-angled trapezoidal cross-section and an inclined surface with several evenly distributed through holes facing the optical film body. An exhaust pipe is connected to the left side of the housing. High-pressure gas enters the inner cavity of the distributor through the air inlet pipe, exits through the through holes, and is blown onto the two surfaces of the optical film body, cooling the optical film body. This prevents the optical film body from twisting and deforming due to high temperatures. Simultaneously, smoke is carried by the high-pressure gas and discharged from the exhaust pipe.

Description

Technical Field

[0001] This invention relates to a dual-station laser drilling device for optical films, belonging to the field of optical film laser processing technology. Background Technology

[0002] Laser drilling of optical films utilizes high-energy pulsed lasers, focused into micron-sized spots by an optical system. Through photothermal or photochemical reactions, it instantly vaporizes and ablates optical film materials, achieving non-contact precision micro-hole processing. It boasts advantages such as apertures of 10-500 μm, accuracy of ±1-3 μm, smooth, burr-free hole edges, small heat-affected zone, high efficiency, and strong flexibility, making it widely used in the processing of micron-sized hole arrays in display backlight guide films, optical filter films, and new energy membranes. However, existing laser drilling equipment for optical films has shortcomings. The optical film slightly deforms when heated, generating fumes that pollute the environment. Therefore, how to reduce the temperature of the optical film and minimize fumes pollution is a crucial technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0003] To overcome the above-mentioned shortcomings, the purpose of this invention is to provide a dual-station laser drilling device for optical films.

[0004] To achieve the above objectives, the technical solution adopted by this invention is: a dual-station laser drilling device for optical films, comprising an unwinding mechanism, a winding mechanism, a housing, a first linear motor, a first laser, a second linear motor, a second laser, a control system, a support, and a CCD camera. Slits are provided on both the left and right sides of the housing. The optical film body discharged from the unwinding mechanism passes through the slits and is wound up by the winding mechanism. The first linear motor is located on the upper side wall of the housing, and the first laser is loaded on the first linear motor. The second linear motor is located on the lower side wall of the housing, and the second laser is loaded on the second linear motor. The first laser and the second laser... The optical film body is spaced apart along its length. A first laser and a second laser process the optical film body to form a first element and a second element, respectively. A pair of cold blowing mechanisms are provided on the right side of the housing. The pair of cold blowing mechanisms are located at the upper and lower edges of the slit, respectively, and the optical film body passes through the pair of cold blowing mechanisms. The cold blowing mechanism includes an air inlet pipe and a distributor. The distributor has an inner cavity, and the air inlet pipe communicates with the inner cavity of the distributor. The cross-section of the distributor is a right-angled trapezoid. The distributor has an inclined surface, and several evenly distributed through holes are opened on the inclined surface, with the through holes facing the optical film body. An exhaust pipe is connected to the left side of the housing.

[0005] The invention is further configured such that: a first support mechanism and a second support mechanism are provided inside the housing; the upper surface of the first support mechanism supports the optical film body, and the lower surface of the second support mechanism presses down on the optical film body; a laser emitted by a first laser irradiates the optical film body on the first support mechanism, and a laser emitted by a second laser irradiates the optical film body under the second support mechanism; the first support mechanism and the second support mechanism have the same structure, the first support mechanism includes a round tube and a pair of square tubes, the pair of square tubes are connected to both ends of the round tube, and cooling water flows in the round tube and the square tube; the square tube is connected to the first laser and moves synchronously.

[0006] The present invention is further configured such that: the first graphic element includes several mutually spaced first parts, the second graphic element includes several mutually spaced second parts, and the first parts and the second parts are combined to form a continuous, unspaced, and non-overlapping total graphic element.

[0007] The present invention is further configured such that: a plurality of target points are provided on the optical film body at equal intervals; after the CCD camera detects the total image element and the target points, it transmits the information to the control system; the control system calculates the distance error between the total image element and the target points, as well as the stitching distance error between the first image element and the second image element; controls the first linear motor to move the first laser, and controls the second linear motor to move the second laser, so as to eliminate the error.

[0008] A further feature of the present invention is that the left or right side of the box is replaced by a pair of door panels, and the edges of the door panels are rotatably connected to the top or bottom surface of the box via hinges.

[0009] Compared with existing technologies, the advantages of this invention are as follows: The unwinding and rewinding mechanisms are activated to tension the optical film body, which then passes through the slit. High-pressure gas enters the inner cavity of the distributor through the inlet pipe, exits through the through-hole, and blows onto the two surfaces of the optical film body, cooling it down. This prevents the optical film body from twisting and deforming due to high temperatures. Simultaneously, the fumes generated during laser processing are carried by the high-pressure gas and discharged through the exhaust pipe, protecting the environment and preventing pollution.

[0010] The cooling water flowing in the first support mechanism cools the optical film body and also prevents the first support mechanism from being burned through by the laser. Preferably, the square tube is connected to the first laser by a clamp and moves synchronously. No matter where the first laser moves, the laser emitted by the first laser always illuminates the optical film body on the circular tube.

[0011] A first element and a second element are formed on the optical film body by sequentially processing the film with a first laser and a second laser. The first element comprises several spaced-apart first sections, such as dashed lines. As the first element moves above the second laser, high-pressure gas from a cooling mechanism cools the first element to room temperature. The second element comprises several spaced-apart second sections, such as another dashed line shape. The first and second sections combine to form a continuous, uninterrupted, and non-overlapping overall element. As the overall element moves to the right side of the housing, high-pressure gas from the cooling mechanism cools the overall element to room temperature. Therefore, the heat generated by the laser on the optical film body is divided into two parts, reducing the maximum temperature of the optical film body and preventing deformation due to high temperatures.

[0012] The control system calculates the distance error between the total primitives and the target point, as well as the stitching distance error between the first primitive and the second primitive. It then controls the first linear motor carrying the first laser to move, and controls the second linear motor carrying the second laser to move, in order to eliminate these errors and improve machining accuracy. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a dual-station laser drilling device for optical films.

[0014] Figure 2 This is a schematic diagram of another state of the dual-station laser drilling equipment for optical films;

[0015] Figure 3 This is a schematic diagram of the distribution structure of the first support mechanism;

[0016] Figure 4 This is a structural diagram of the first and second primitives.

[0017] In the diagram: 1. Unwinding mechanism; 2. Rewinding mechanism; 3. Housing; 4. Door panel; 5. Exhaust pipe; 6. Inlet pipe; 7. Distributor; 8. Inclined surface; 9. Through hole; 10. First linear motor; 11. First laser; 12. Second linear motor; 13. Second laser; 14. Bracket; 15. CCD camera; 16. First support mechanism; 17. Second support mechanism; 18. First element; 19. Second element; 20. Hinge; 21. Slit; 22. Cold blowing mechanism; 23. Optical film body; 161. Round tube; 162. Square tube. Detailed Implementation

[0018] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0019] See Figure 1-4 As shown, this embodiment of a dual-station laser drilling device for optical films includes an unwinding mechanism 1, a winding mechanism 2, a housing 3, a first linear motor 10, a first laser 11, a second linear motor 12, a second laser 13, a control system, a support 14, and a CCD camera 15. Slits 21 are provided on both the left and right sides of the housing 3. The optical film body 23 discharged from the unwinding mechanism 1 is wound up by the winding mechanism 2 through the slits 21. The first linear motor 10 is located on the upper side wall of the housing 3, and the first laser 11 is loaded on the first linear motor 10. The second linear motor 12 is located on the lower side wall of the housing 3, and the second laser 13 is loaded on the second linear motor 12. The first laser 11 and the second laser 13 are used to drill holes in the optical film. The optical film body 23 is spaced apart along its length. The first laser 11 and the second laser 13 are processed on the optical film body 23 to form the first graphic element 18 and the second graphic element 19, respectively. A pair of cold blowing mechanisms 22 are provided on the right side of the housing 3. The pair of cold blowing mechanisms 22 are located at the upper and lower edges of the slit, respectively. The optical film body 23 passes through the pair of cold blowing mechanisms 22. The cold blowing mechanism 22 includes an air inlet pipe 6 and a distributor 7. The distributor 7 has an inner cavity, and the air inlet pipe 6 communicates with the inner cavity of the distributor 7. The cross-section of the distributor 7 is a right trapezoidal shape. The distributor 7 has an inclined surface 8, and several evenly distributed through holes 9 are opened on the inclined surface 8. The through holes 9 face the optical film body 23. An exhaust pipe 5 is connected to the left side of the housing 3.

[0020] The housing 3 is internally equipped with a first support mechanism 16 and a second support mechanism 17. The upper surface of the first support mechanism 16 supports the optical film body 23, and the lower surface of the second support mechanism 17 presses down on the optical film body 23. The laser emitted by the first laser 11 irradiates the optical film body 23 on the first support mechanism 16, and the laser emitted by the second laser 13 irradiates the optical film body 23 under the second support mechanism 17. The first support mechanism 16 and the second support mechanism 17 have the same structure. The first support mechanism 16 includes a round tube 161 and a pair of square tubes 162. The pair of square tubes 162 are connected to both ends of the round tube 161. Cooling water flows in the round tube 161 and the square tubes 162. The square tubes 162 are connected to the first laser 11 and move synchronously.

[0021] The first graphic element 18 comprises several mutually spaced first parts, and the second graphic element 19 comprises several mutually spaced second parts. The first parts and the second parts are combined to form a continuous, uninterrupted, and non-overlapping overall graphic element. In this embodiment, the first graphic element 18 and the second graphic element 19 are as follows: Figure 4 As shown, it is in the shape of a five-pointed star. It can also be in other shapes.

[0022] The optical film body 23 is provided with a plurality of target points set at equal intervals. After the CCD camera 15 detects the total image elements and the target points, it transmits the information to the control system. The control system calculates the distance error between the total image elements and the target points, as well as the stitching distance error between the first image element 18 and the second image element 19, and controls the first linear motor 10 to move the first laser 11 and the second linear motor 12 to move the second laser 13 to eliminate the error.

[0023] To facilitate opening and maintenance of the enclosure 3, the left or right side of the enclosure 3 is replaced by a pair of door panels 4. The edges of the door panels 4 are rotatably connected to the top or bottom surface of the enclosure 3 via hinges 20. When closed, the distance between the pair of door panels 4 is equal to the height of the slit 21.

[0024] In summary, the method of using the dual-station laser drilling equipment for optical films shown in this invention is as follows: The unwinding mechanism 1 and the rewinding mechanism 2 are activated to tension the optical film body 23, which then passes through the slit 21. High-pressure gas enters the inner cavity of the distributor 7 through the inlet pipe 6 and exits through the through hole 9, blowing onto the two surfaces of the optical film body 23 to cool it down. This prevents the optical film body 23 from twisting or deforming due to high temperatures. Simultaneously, the fumes generated by laser processing on the optical film body 23 are carried by the high-pressure gas and discharged through the exhaust pipe 5, protecting the environment and preventing pollution.

[0025] The cooling water flowing in the first support mechanism 16 cools the optical film body 23 and also prevents the first support mechanism 16 from being burned through by the laser. Preferably, the square tube 162 is connected to the first laser 11 by a clamp and moves synchronously. No matter where the first laser 11 moves, the laser emitted by the first laser 11 always irradiates the optical film body 23 on the circular tube 161.

[0026] First element 18 and second element 19 are formed on the optical film body 23 by first laser 11 and second laser 13 respectively. First element 18 comprises several spaced-apart first parts, such as dashed lines. As first element 18 moves above second laser 13, high-pressure gas from cooling mechanism 22 cools it down to room temperature. Second element 19 comprises several spaced-apart second parts, such as another dashed line shape. The first and second parts combine to form a continuous, uninterrupted, and non-overlapping overall element. As the overall element moves to the right side of housing 3, high-pressure gas from cooling mechanism 22 cools it down to room temperature. Therefore, the heat generated by the laser on the optical film body 23 is divided into two parts, reducing the maximum temperature of the optical film body 23 and preventing deformation due to high temperature.

[0027] The control system calculates the distance error between the total primitives and the target point, as well as the stitching distance error between the first primitive 18 and the second primitive 19. It then controls the first linear motor 10, which carries the first laser 11, to move, and controls the second linear motor 12, which carries the second laser 13, to move, in order to eliminate these errors and improve processing accuracy.

[0028] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it. They should not be used to limit the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A dual-station laser drilling device for optical films, comprising an unwinding mechanism (1), a winding mechanism (2), a housing (3), a first linear motor (10), a first laser (11), a second linear motor (12), a second laser (13), a control system, a support (14), and a CCD camera (15). Slits (21) are provided on both the left and right sides of the housing (3). The optical film body (23) discharged by the unwinding mechanism (1) is wound up by the winding mechanism (2) through the slits (21). The first linear motor (10)... The first laser (11) is mounted on the upper side wall of the housing (3), and the first laser (12) is mounted on the lower side wall of the housing (3). The first laser (11) and the second laser (13) are arranged at intervals along the length of the optical film body (23). The first laser (11) and the second laser (13) are processed on the optical film body (23) to form the first graphic element (18) and the second graphic element (19) respectively. Its features are, A pair of cold blowing mechanisms (22) are provided on the right side of the housing (3). The pair of cold blowing mechanisms (22) are located at the upper and lower edges of the slit, respectively. The optical film body (23) passes through the pair of cold blowing mechanisms (22). The cold blowing mechanism (22) includes an air inlet pipe (6) and a distributor (7). The distributor (7) has an inner cavity, and the air inlet pipe (6) is connected to the inner cavity of the distributor (7). The cross-section of the distributor (7) is a right trapezoidal shape. The distributor (7) has an inclined surface (8), and several evenly distributed through holes (9) are opened on the inclined surface (8). The through holes (9) face the optical film body (23). An exhaust pipe (5) is connected to the left side of the housing (3).

2. The dual-station laser drilling equipment for optical films according to claim 1, characterized in that, The housing (3) is equipped with a first support mechanism (16) and a second support mechanism (17). The upper surface of the first support mechanism (16) supports the optical film body (23), and the lower surface of the second support mechanism (17) presses down on the optical film body (23). The laser emitted by the first laser (11) irradiates the optical film body (23) on the first support mechanism (16), and the laser emitted by the second laser (13) irradiates the optical film body (23) under the second support mechanism (17). The first support mechanism (16) and the second support mechanism (17) have the same structure. The first support mechanism (16) includes a round tube (161) and a pair of square tubes (162). The pair of square tubes (162) are connected to both ends of the round tube (161). Cooling water flows in the round tube (161) and the square tube (162). The square tube (162) is connected to the first laser (11) and moves synchronously.

3. The dual-station laser drilling equipment for optical films according to claim 1, characterized in that, The first graphic element (18) contains several mutually spaced first parts, and the second graphic element (19) contains several mutually spaced second parts. The first parts and the second parts are combined to form a continuous, unspaced, and non-overlapping total graphic element.

4. The dual-station laser drilling equipment for optical films according to claim 3, characterized in that, The optical film body (23) is provided with a number of target points set at equal intervals. After the CCD camera (15) detects the total image elements and the target points, it transmits the information to the control system. The control system calculates the distance error between the total image elements and the target points, as well as the splicing distance error between the first image element (18) and the second image element (19). It controls the first linear motor (10) to carry the first laser (11) to move, and controls the second linear motor (12) to carry the second laser (13) to move, so as to eliminate the error.

5. The dual-station laser drilling equipment for optical films according to claim 1, characterized in that, The left or right side of the box (3) is replaced by a pair of door panels (4), and the edge of the door panel (4) is rotatably connected to the top or bottom surface of the box (3) by a hinge (20).

Images