A laser cutting device for processing an optical film

Abstract

The application discloses a kind of laser cutting devices for optical film processing, including laser cutting head, the outside of the laser cutting head is provided with protection mechanism, the protection mechanism includes support, the support is arranged outside the laser cutting head, the outer surface of the support is fixedly connected with linear motor, the outer surface of the support and linear motor is fixedly connected with lifting rod, the output end of one side lifting rod is fixedly connected with the outer surface of laser cutting head, the output end of the other side lifting rod is fixedly connected with abutment, the abutment is arranged below the laser cutting head, the body of the abutment is provided with through cutting seam groove, relate to optical film cutting technical field, solve the problem that when using existing laser cutting device, air cooling heat dissipation is carried out below optical film through air extraction hole, resulting in poor actual heat dissipation efficiency and effect, and since only one side heat dissipation can be carried out, resulting in limited actual protection effect on cutting seam flatness.

Description

Technical Field

[0001] This invention relates to the field of optical film cutting technology, specifically to a laser cutting device for optical film processing. Background Technology

[0002] Currently, when laser cutting optical films, clamps are typically used to fix the optical film onto the laser cutting device. This results in low cutting efficiency and the optical film is prone to shifting, affecting the cutting effect. In the invention patent with publication number CN119282429A, a laser cutting device for optical film processing is disclosed, which includes a base and a worktable, as well as a conveying and fixing unit set on the worktable. This device can overcome the problems of low cutting efficiency, poor cutting quality, high loss, and inconvenience in collecting optical films.

[0003] While the device possesses the aforementioned advantages, it still has certain drawbacks in use. Although it dissipates heat from the cut by setting up air extraction holes, the temperature during laser cutting is high, and ordinary air cooling cannot dissipate heat in a timely and effective manner. Furthermore, the air extraction holes are only located below the optical film material, which can only dissipate heat on one side of the optical film material, resulting in limited actual protection for the smoothness of the cut. Therefore, it is necessary to improve upon the shortcomings of the existing laser cutting device. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a laser cutting device for optical film processing. It solves the problems of poor actual heat dissipation efficiency and effect caused by air cooling through the air extraction hole under the optical film when using existing laser cutting devices, and the limited protection of the cut surface due to the fact that heat dissipation can only be carried out on one side.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser cutting device for processing optical film materials, comprising a laser cutting head, a protective mechanism provided on the outside of the laser cutting head, the protective mechanism including a bracket, the bracket being disposed outside the laser cutting head, a linear motor fixedly connected to the outer surface of the bracket, and lifting rods fixedly connected to the outer surfaces of both the bracket and the linear motor, the output end of one lifting rod being fixedly connected to the outer surface of the laser cutting head, and a backing plate fixedly connected to the output end of the other lifting rod, the backing plate being disposed below the laser cutting head, the body of the backing plate having a through slit groove, the slit groove being disposed directly below the laser cutting head, the linear motor driving the laser cutting head to slide along the slit groove to cut the optical film material, and inner cavities being formed on both sides of the backing plate body, the inner cavity having a partition fixedly connected inside, the partition dividing the upper part of the inner cavity into a heat dissipation cavity.

[0006] Preferably, the heat dissipation cavity has heat dissipation holes on three sides, and the heat dissipation holes are opened on the body of the abutment and are in a through state.

[0007] Preferably, the body of the abutment is provided with a touch component, the touch component including a groove, the groove being formed on the top of the abutment, the interior of the groove communicating with the interior of the slit groove, a slider being slidably connected inside the groove, a heat-conducting plate being fixedly connected to the outer surface of the slider, a lead screw being threadedly connected to the body of the slider, the end of the lead screw being rotatably embedded in the interior of the groove, and an adjusting motor being fixedly connected to one end of the lead screw via a coupling, the outer surface of the adjusting motor being fixedly connected to the outer surface of the abutment.

[0008] Preferably, a thermistor is fixedly connected to the outer surface of the heat-conducting plate, the outer surface of the thermistor is slidably connected to the inside of the groove, and a slide rod is slidably connected through the body of the thermistor, the end of the slide rod being fixedly connected to the inside of the groove.

[0009] Preferably, a control unit is provided on the outside of the thermistor. The control unit includes a support plate, the outer surface of which is fixedly connected to the inside of the slide groove. An arc strip is fixedly connected to the outer surface of the support plate. A rotating rod is rotatably connected through the body of the support plate. An arc plate is fixedly connected to the outer surface of the rotating rod. The outer surface of the arc plate is movably connected to the outer surface of the arc strip. A torsion spring is sleeved on the outside of the rotating rod. The two ends of the torsion spring are fixedly connected to the outer surfaces of the support plate and the rotating rod, respectively.

[0010] Preferably, a magnetic plate is fixedly connected to the outer surface of the rotating rod, the outer surface of the magnetic plate is movably connected to the interior of the slide groove, an electromagnet is movably connected to the outside of the magnetic plate by magnetic force, the outer surface of the electromagnet is fixedly connected to the interior of the slide groove, and the input end of the electromagnet is electrically connected to the output end of the thermistor through a wire.

[0011] Preferably, a heat dissipation assembly is provided inside the inner cavity. The heat dissipation assembly includes a fan blade, the outer surface of which is rotatably connected to the inside of the heat dissipation cavity. The shaft end of the fan blade is fixedly connected to the body of the partition and extends into the inner cavity. A propeller is fixedly connected to the shaft end of the fan blade, the outer surface of which is rotatably connected to the inside of the inner cavity. A conical cover is rotatably connected to the shaft end of the fan blade, the outer surface of which is fixedly connected to the outer surface of the partition. A fixed tube is sleeved on the outside of the propeller. The fixed tube is located directly below the conical cover and one end is fixedly connected to the inside of the inner cavity. A through groove is opened at one end of the fixed tube.

[0012] Preferably, a worm gear is fixedly connected through the shaft end of the fan blade, the outer surface of the worm gear is rotatably connected to the interior of the heat dissipation cavity, a worm is meshed on the outer surface of the worm gear, the shaft end of the worm is rotatably embedded in the interior of the heat dissipation cavity, and a drive motor is fixedly connected to the shaft end of the worm through a coupling, the outer surface of the drive motor is fixedly connected to the outer surface of the backing plate.

[0013] Beneficial effects This invention provides a laser cutting apparatus for optical film processing. Compared with the prior art, it has the following advantages: (1) By setting up a protective mechanism, the lifting rod drives the bottom plate to descend, so that the cutting groove is directly above the cutting groove. Then, the linear motor drives the laser cutting head to move along the cutting groove through the corresponding lifting rod, so that the laser cutting line cuts the optical film material through the cutting groove. On the one hand, the bottom plate abuts against both sides of the cutting groove to prevent deformation. On the other hand, the coolant inside the cavity can achieve rapid heat exchange, which can further avoid the problem of uneven cut. At the same time, the partition and heat dissipation holes can increase the heat dissipation area, which can facilitate the heat dissipation of the coolant and thus facilitate the continuous use of the device.

[0014] (2) By setting a point contact component, the heat-conducting plate can slide inside the groove to cut optical film materials of different specifications. The heat-conducting plate is set on both sides of the optical film material to receive the laser cutting line emitted by the laser cutting head in the preheated state, which can avoid the laser rays from damaging other parts and the problem of the cut deformation due to insufficient temperature. The cooperation between the slider and the lead screw and the thermistor and the slide rod can improve the stability of the heat-conducting plate inside the groove. At the same time, the groove is recessed on the surface of the back plate, which can save space and make the outside of the back plate more regular, and can also increase the overall heat dissipation area, further improving the heat dissipation efficiency of the coolant.

[0015] (3) By setting up a control unit, when the heat-conducting plate transfers the heat energy of the laser cutting line to the thermistor, it changes its own resistance value, which causes the magnetic force of the electromagnet to change, and then causes the magnetic force of the electromagnet and the magnetic plate and the force of the torsion spring to change, so that the rotating rod rotates to make the arc plate and the arc strip fit together, thereby forming a control signal. The initial signal controls the linear motor to drive the laser cutting head to move and cut the optical film material, and the final signal controls the linear motor to stop moving and causes the laser cutting head to stop laser cutting, thereby facilitating the precise cutting of the optical film material and avoiding the problem of accidental damage.

[0016] (4) By setting up a heat dissipation component, the drive motor drives the fan blades to rotate synchronously through the transmission of the worm gear and worm. The fan blades drive the air inside the heat dissipation chamber to be discharged through the heat dissipation hole above, and then enter through the heat dissipation holes on both sides. The coolant is cooled by the external air circulation. At the same time, the blades pump the coolant upward through the through groove and solid pipe. Heat exchange is achieved through the contact between the coolant and the cone cover. Thus, the service life of the coolant can be increased by cooling the coolant, so as to facilitate the continuous use of the device. Attached Figure Description

[0017] Figure 1 This is a perspective view of the external structure of the present invention; Figure 2 This is a perspective view of the internal structure of the backing plate of the present invention; Figure 3 This is a perspective view of the external structure of the slider of the present invention; Figure 4 This is a perspective view of the external structure of the support plate of the present invention; Figure 5 This is a perspective view of the external structure of the fan blade of the present invention.

[0018] In the diagram: 1. Laser cutting head; 2. Support; 3. Linear motor; 4. Lifting rod; 5. Support plate; 6. Cutting groove; 7. Contact assembly; 71. Slide groove; 72. Slider; 73. Heat-conducting plate; 74. Lead screw; 75. Adjusting motor; 76. Thermistor; 77. Control unit; 771. Support plate; 772. Arc strip; 773. Rotating rod; 774. Arc plate; 775. Torsion spring; 776. Magnetic plate; 777. Electromagnet; 778. Wire; 78. Slide rod; 8. Inner cavity; 9. Heat dissipation assembly; 91. Fan blade; 92. Paddle blade; 93. Conical cover; 94. Fixed pipe; 95. Through groove; 96. Worm gear; 97. Worm; 98. Drive motor; 10. Partition plate; 11. Heat dissipation cavity; 12. Heat dissipation hole. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figure 1-5 This invention provides a technical solution: a laser cutting device for optical film processing. The device includes a laser cutting head 1, which is electrically connected to an external control circuit. A protective mechanism, including a support 2, is installed on the outside of the laser cutting head 1. The support 2 is fixedly connected to the base of the existing cutting device and is positioned outside the laser cutting head 1. A linear motor 3 is fixedly connected to the outer surface of the support 2, and is electrically connected to the external control circuit. The linear motor 3 has a self-locking function to improve the stability of the laser cutting head 1. Lifting rods 4 are fixedly connected to the outer surfaces of both the support 2 and the linear motor 3. The lifting rods 4 are made of electric push rods and are electrically connected to the external control circuit. The output end of one lifting rod 4 is fixedly connected to the outer surface of the laser cutting head 1, and the output end of the other lifting rod 4 is fixedly connected to a backing plate 5. The backing plate 5 is made of a material that is pressure-resistant, wear-resistant, corrosion-resistant, and has good thermal conductivity. The backing plate 5 is positioned below the laser cutting head 1. The body of the back plate 5 has a through slit groove 6, which facilitates the penetration of the laser cutting line emitted by the laser cutting head 1 to cut the optical film. The slit groove 6 is located directly below the laser cutting head 1. The linear motor 3 drives the laser cutting head 1 to slide along the slit groove 6 to cut the optical film. Both sides of the back plate 5 have inner cavities 8, which are filled with coolant to exchange heat on both sides of the slit to avoid unevenness caused by high temperature cutting. A partition 10 is fixedly connected inside the inner cavity 8. The partition 10 is made of the same material as the back plate 5. The partition 10 divides the upper part of the inner cavity 8 into a heat dissipation cavity 11. As a preferred embodiment, arc-shaped guide plates can be set on both sides of the heat dissipation cavity 11. On the one hand, it can increase the heat dissipation area, and on the other hand, it can guide the air inside the heat dissipation cavity 11 to further improve the heat dissipation performance.

[0021] The heat dissipation cavity 11 has heat dissipation holes 12 connected to three sides. The heat dissipation holes 12 can increase the heat dissipation area, and due to the isolation effect of the partition 10, the problem of coolant leakage can be avoided. The heat dissipation holes 12 are opened on the body of the back plate 5 and are in a through state.

[0022] The backplate 5 has a contact component 7, which includes a groove 71. The groove 71 is located on the top of the backplate 5 and serves to store and increase the heat dissipation area. The interior of the groove 71 is connected to the interior of the slot 6. A slider 72 is slidably connected inside the groove 71. The slider 72 is made of the same material as the backplate 5. A heat-conducting plate 73 is fixedly connected to the outer surface of the slider 72. The heat-conducting plate 73 has good thermal conductivity and a melting point far exceeding that of the optical film material. A lead screw 74 is threaded through the body of the slider 72. The surface of the lead screw 74 has two... The threads on both sides are arranged in opposite directions, which can drive the two sets of heat-conducting plates 73 to move synchronously in opposite directions, so as to adjust the distance between the two sets of heat-conducting plates 73, thereby adapting to different specifications of optical film materials. The end of the lead screw 74 is rotatably connected to the inside of the slide groove 71. One end of the lead screw 74 is fixedly connected to the adjusting motor 75 through a coupling. The adjusting motor 75 is made of servo motor and is electrically connected to the external control circuit. As a preferred method, it can be installed on the back plate 5 through heat insulation material, and the outer surface of the adjusting motor 75 is fixedly connected to the outer surface of the back plate 5.

[0023] A thermistor 76 is fixedly connected to the outer surface of the heat-conducting plate 73. When the thermistor 76 is heated, its resistance changes, causing the current value of its circuit to change accordingly. The outer surface of the thermistor 76 is slidably connected to the inside of the slide groove 71. A slide rod 78 is slidably connected through the body of the thermistor 76. The slide rod 78 provides support and movement guidance for the thermistor 76. The end of the slide rod 78 is fixedly connected to the inside of the slide groove 71.

[0024] The thermistor 76 is externally equipped with a control unit 77, which includes a support plate 771. The support plate 771 serves as a fixed support and is made of a pressure-resistant, wear-resistant, and insulating material. The outer surface of the support plate 771 is fixedly connected to the interior of the slide groove 71. An arc strip 772 is fixedly connected to the outer surface of the support plate 771. The arc strip 772 is made of a wear-resistant and conductive material. A rotating rod 773 is rotatably connected through the body of the support plate 771. The rotating rod 773 is made of the same material as the support plate 771, and the connection between the two is equipped with an axial limiting measure (not shown in the figure). As shown), an arc plate 774 is fixedly connected to the outer surface of the rotating rod 773. The arc plate 774 is made of the same material as the arc strip 772, and both are electrically connected to the external control circuit. The two form a joint control signal by fitting together, so as to control the working state of the linear motor 3 and the laser cutting head 1. The outer surface of the arc plate 774 is movably connected to the outer surface of the arc strip 772. A torsion spring 775 is sleeved on the outside of the rotating rod 773. The torsion spring 775 can facilitate the arc plate 774 to reverse and reset by rebound. The two ends of the torsion spring 775 are fixedly connected to the support plate 771 and the outer surface of the rotating rod 773, respectively.

[0025] A magnetic plate 776 is fixedly connected to the outer surface of the rotating rod 773. The magnetic plate 776 is made of permanent magnet. The outer surface of the magnetic plate 776 is movably connected to the inside of the slide groove 71. An electromagnet 777 is movably connected to the outside of the magnetic plate 776 through magnetic force. The electromagnet 777 generates magnetism when energized, and controls the rotating rod 773 to rotate in both directions by the change of magnetic force between it and the magnetic plate 776, as well as the elastic force of the torsion spring 775. The outer surface of the electromagnet 777 is fixedly connected to the inside of the slide groove 71. The input end of the electromagnet 777 is electrically connected to the output end of the thermistor 76 through a wire 778. The wire 778 is spirally arranged, and its deformation can easily adapt to the movement of the thermistor 76.

[0026] The inner cavity 8 is equipped with a heat dissipation assembly 9, which includes a fan blade 91. The outer surface of the fan blade 91 is rotatably connected to the interior of the heat dissipation cavity 11. The rotation of the fan blade 91 drives the air inside the heat dissipation cavity 11 to circulate externally through the three-sided heat dissipation holes 12, so as to dissipate heat from the coolant. The shaft end of the fan blade 91 is fixedly connected to the body of the partition plate 10 and extends into the interior of the inner cavity 8. The fan blade 91 is connected to the partition plate 10 by an axial limiting measure (not shown in the figure) to improve the stability of the fan blade 91. The shaft end of the fan blade 91 is fixedly connected to a propeller 92. The rotation of the propeller 92 can drive the movement of the coolant to dissipate heat from the coolant. The outer surface of the propeller 92... The fan blade 91 is rotatably connected to the inner cavity 8. The shaft end of the fan blade 91 is rotatably connected to a cone cover 93. The cone cover 93 is connected to the fan blade 91 through a rotary seal to improve the connection sealing. The cone cover 93 can also increase the heat dissipation area. The outer surface of the cone cover 93 is fixedly connected to the outer surface of the partition plate 10. A solid tube 94 is sleeved on the outside of the blade 92. The solid tube 94 and the blade 92 cooperate to form a coolant circulation path. The solid tube 94 is located directly below the cone cover 93 and one end is fixedly connected to the inside of the inner cavity 8. One end of the solid tube 94 has a through groove 95. Multiple through grooves 95 are set at equal angles to facilitate the entry of coolant into the interior of the solid tube 94.

[0027] A worm gear 96 is fixedly connected through the shaft end of the fan blade 91. The outer surface of the worm gear 96 is rotatably connected to the interior of the heat dissipation cavity 11. A worm 97 meshes with the outer surface of the worm gear 96. The meshing of the worm 97 and the worm gear 96 can improve the stability of the fan blade 91 through a self-locking function, and can also drive multiple sets of fan blades 91 synchronously through vertical transmission to improve the heat dissipation efficiency of the coolant. The shaft end of the worm 97 is rotatably embedded in the interior of the heat dissipation cavity 11. The shaft end of the worm 97 is fixedly connected to a drive motor 98 through a coupling. The drive motor 98 is electrically connected to an external control circuit and is mounted on the back plate 5 through heat insulation material. The outer surface of the drive motor 98 is fixedly connected to the outer surface of the back plate 5.

[0028] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0029] Working principle: The existing cutting device conveys the optical film material and makes the cut slit directly below the cut groove 6. Then, the output end of a set of lifting rods 4 extends and drives the abutment plate 5 to descend. The abutment plate 5 and the optical film material are in contact to abut the two sides of the cut slit. Then, the motor 75 drives the lead screw 74 to rotate. Through the threaded connection between the lead screw 74 and the slider 72, the two sets of sliders 72 drive the corresponding heat-conducting plates 73 to slide inside the slide groove 71 and stop above the edge of the optical film material. Then, the linear motor 3 drives the laser cutting head 1 to move directly above the set of heat-conducting plates 73. The output of the corresponding lifting rod 4 extends and drives the laser cutting head 1 to approach the optical film material. Then, the laser cutting head 1 emits a laser cutting line to irradiate the set of heat-conducting plates 73. During preheating, the heat-conducting plate 73 conducts heat energy to the thermistor 76, causing a change in the resistance of the thermistor 76. This change in the resistance causes a change in the magnetic force of the electromagnet 777. The change in the magnetic force between the electromagnet 777 and the magnetic plate 776, combined with the elastic force of the torsion spring 775, causes the rotating rod 773 to drive the arc plate 774 to rotate. When the temperature of the laser cutting line reaches the melting point of the optical film, the arc plate 774 rotates and comes into contact with the arc strip 772, forming an initial control signal. This causes the linear motor 3 to drive the laser cutting head 1 to translate, allowing the laser cutting line to irradiate the optical film through the slit groove 6 to cut the optical film. When the laser cutting line irradiates another set of heat-conducting plates 73 through translation, a final control signal is formed, causing the linear motor 3 to stop moving. After the set conveying interval, the last-position control signal is converted into the initial control signal, causing the linear motor 3 to move in the reverse direction, thereby enabling the laser cutting line to cut the optical film material again. When the optical film material is only cut once, or when the conveying interval is long, the last-position control signal controls the linear motor 3 and the laser cutting head 1 to stop working synchronously. After the conveying interval is reached, the initial control signal is re-formed by the laser cutting line irradiating the heat-conducting plate 73, thereby improving the convenience of optical film material cutting and reducing cutting costs. When the laser cuts the optical film material, the coolant cools both sides of the cut through the abutment plate 5 to avoid uneven cuts. The drive motor 98 drives the fan blade 91 to rotate the propeller blade 92 through the meshing of the worm gear 97 and worm wheel 96. The fan blade 91 drives the air inside the heat dissipation cavity 11 to be discharged through the upper heat dissipation hole 12, and allows outside air to enter the heat dissipation cavity 11 through the heat dissipation holes 12 on both sides, thereby dissipating the coolant through external air circulation. The propeller blade 92 pumps the coolant inside the solid tube 94 upward. After impacting the cone cover 93, the coolant falls into the lower part of the inner cavity 8. The coolant inside the inner cavity 8 enters the solid tube 94 through the through groove 95, and the cooling efficiency is further improved through coolant circulation.

[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser cutting device for processing optical film materials, comprising a laser cutting head (1), characterized in that: The laser cutting head (1) is provided with a protective mechanism, which includes a bracket (2). The bracket (2) is located outside the laser cutting head (1). A linear motor (3) is fixedly connected to the outer surface of the bracket (2). Lifting rods (4) are fixedly connected to the outer surfaces of both the bracket (2) and the linear motor (3). The output end of one lifting rod (4) is fixedly connected to the outer surface of the laser cutting head (1), and the output end of the other lifting rod (4) is fixedly connected to a stop plate (5). Located below the laser cutting head (1), the body of the abutment plate (5) has a through slit groove (6). The slit groove (6) is located directly below the laser cutting head (1). The linear motor (3) drives the laser cutting head (1) to slide along the slit groove (6) to cut the optical film. Both sides of the body of the abutment plate (5) have inner cavities (8). A partition plate (10) is fixedly connected inside the inner cavity (8). The partition plate (10) divides the upper part of the inner cavity (8) into a heat dissipation cavity (11).

2. The laser cutting device for optical film processing according to claim 1, characterized in that: The heat dissipation cavity (11) has heat dissipation holes (12) on three sides. The heat dissipation holes (12) are opened on the body of the abutment plate (5) and are in a through state.

3. The laser cutting device for optical film processing according to claim 1, characterized in that: The body of the abutment (5) is provided with a touch component (7), the touch component (7) includes a groove (71), the groove (71) is opened on the top of the abutment (5), the interior of the groove (71) is connected to the interior of the slit groove (6), a slider (72) is slidably connected inside the groove (71), a heat-conducting plate (73) is fixedly connected to the outer surface of the slider (72), a lead screw (74) is threaded through the body of the slider (72), the end of the lead screw (74) is rotatably embedded in the interior of the groove (71), one end of the lead screw (74) is fixedly connected to an adjusting motor (75) through a coupling, and the outer surface of the adjusting motor (75) is fixedly connected to the outer surface of the abutment (5).

4. The laser cutting device for optical film processing according to claim 3, characterized in that: A thermistor (76) is fixedly connected to the outer surface of the heat-conducting plate (73). The outer surface of the thermistor (76) is slidably connected to the inside of the slide groove (71). The body of the thermistor (76) is slidably connected to a slide rod (78). The end of the slide rod (78) is fixedly connected to the inside of the slide groove (71).

5. The laser cutting device for optical film processing according to claim 4, characterized in that: The thermistor (76) is externally provided with a control unit (77), which includes a support plate (771). The outer surface of the support plate (771) is fixedly connected to the inside of the slide groove (71). An arc strip (772) is fixedly connected to the outer surface of the support plate (771). A rotating rod (773) is rotatably connected through the body of the support plate (771). An arc plate (774) is fixedly connected to the outer surface of the rotating rod (773). The outer surface of the arc plate (774) is movably connected to the outer surface of the arc strip (772). A torsion spring (775) is sleeved on the outside of the rotating rod (773). The two ends of the torsion spring (775) are fixedly connected to the outer surfaces of the support plate (771) and the rotating rod (773), respectively.

6. The laser cutting device for optical film processing according to claim 5, characterized in that: A magnetic plate (776) is fixedly connected to the outer surface of the rotating rod (773). The outer surface of the magnetic plate (776) is movably connected to the inside of the slide groove (71). An electromagnet (777) is movably connected to the outside of the magnetic plate (776) by magnetic force. The outer surface of the electromagnet (777) is fixedly connected to the inside of the slide groove (71). The input end of the electromagnet (777) is electrically connected to the output end of the thermistor (76) through a wire (778).

7. The laser cutting device for optical film processing according to claim 1, characterized in that: The inner cavity (8) is provided with a heat dissipation assembly (9), which includes a fan blade (91). The outer surface of the fan blade (91) is rotatably connected to the inside of the heat dissipation cavity (11). The shaft end of the fan blade (91) is fixedly connected to the body of the partition plate (10) and extends into the inner cavity (8). The shaft end of the fan blade (91) is fixedly connected to a blade (92). The outer surface of the blade (92) is rotatably connected to the inside of the inner cavity (8). The shaft end of the fan blade (91) is rotatably connected to a cone cover (93). The outer surface of the cone cover (93) is fixedly connected to the outer surface of the partition plate (10). A fixed tube (94) is sleeved on the outside of the blade (92). The fixed tube (94) is located directly below the cone cover (93) and one end is fixedly connected to the inside of the inner cavity (8). One end of the fixed tube (94) has a through groove (95).

8. The laser cutting device for optical film processing according to claim 7, characterized in that: The fan blade (91) has a worm gear (96) fixedly connected through its shaft end. The outer surface of the worm gear (96) is rotatably connected to the interior of the heat dissipation cavity (11). The outer surface of the worm gear (96) is meshed with a worm (97). The shaft end of the worm (97) is rotatably embedded in the interior of the heat dissipation cavity (11). The shaft end of the worm (97) is fixedly connected to a drive motor (98) via a coupling. The outer surface of the drive motor (98) is fixedly connected to the outer surface of the backing plate (5).

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