A laser cutting device for liquid crystal displays

Abstract

This invention discloses a laser cutting device for liquid crystal displays, specifically relating to the field of laser cutting technology. The invention utilizes a switching unit and two sets of positioning stations. During the feeding stage, the switching unit engages with the transmission unit, and the positioning frames on both sides are flipped to a vertical position. The two types of display substrates are arranged correspondingly in the same set of positioning stations, and then cut along the same preset direction using a laser cutting unit. This reduces contour errors caused by different cutting and clamping references, ensuring that the polarizer and glass substrate form matching cutting contours, thereby improving dimensional consistency. Meanwhile, the two positioning frames on the other positioning station are flipped to a horizontal position, and the switching unit engages with the ejector unit. The ejector units embedded on both sides of the flip-pushing seat actuate, pushing the cut display substrates located in the positioning frames outwards. The two sets of positioning stations alternately enter the processing chamber under the drive of a sliding plate, continuously cycling through the process.

Description

Technical Field

[0001] This invention relates to the field of laser cutting technology, specifically to a laser cutting device for liquid crystal displays. Background Technology

[0002] LCD screens are widely used in mobile phones, tablets, automotive displays, industrial control terminals, medical equipment, and various smart terminal products. As display products develop towards thinner and lighter designs, narrower bezels, higher integration, and more irregular shapes, higher requirements are placed on cutting precision, processing efficiency, and yield rates during the manufacturing process of LCD screens.

[0003] In the current process of manufacturing LCD screens, it is usually necessary to cut, grooving, trimming, or shape cutting the glass substrate, polarizer, flexible circuit board attachment area, or display module edge. With the development of laser processing technology, non-contact cutting of LCD screens using lasers has become an important direction. Laser cutting has the advantages of concentrated energy, narrow kerf, high precision, fast processing speed, and high degree of automation. It can effectively reduce the damage to the workpiece caused by mechanical stress and is suitable for processing complex contours and microstructures.

[0004] In current LCD manufacturing processes, polarizers and glass substrates are often processed separately, with each being loaded and cut separately. Because the positioning and cutting references used during processing are inconsistent, deviations in the cut contours can easily occur, resulting in poor dimensional matching between the polarizer and the glass substrate. This leads to edge misalignment, over-edge defects, or under-edge defects during subsequent bonding, affecting product processing accuracy and finished product quality. Some processes use bonding before cutting, but this requires high-quality bonding and precise cutting, and therefore has certain limitations. Summary of the Invention

[0005] The purpose of this invention is to provide a laser cutting device for liquid crystal displays to solve the problems mentioned in the background art.

[0006] The main technical problem solved by this invention is: Inconsistent positioning and cutting references between the polarizer and the glass substrate can easily lead to deviations in the cutting contours, resulting in poor dimensional matching between the polarizer and the glass substrate. This can cause edge misalignment, over-edge or under-edge shrinkage during subsequent bonding, thus affecting the product processing accuracy and finished product quality.

[0007] This invention can be achieved through the following technical solutions: A liquid crystal display laser cutting device includes a processing chamber installed in the middle of a substrate. A linear slide rail is installed in the middle of the substrate and passes through the interior of the processing chamber. A sliding plate is installed on the slider of the linear slide rail and two sets of positioning stations are provided on the sliding plate. Both sides of the processing chamber are provided with feeding channels for the vertical entry of the display screen base material, and the interior of the processing chamber is equipped with a laser cutting unit that cuts the display screen base material along the same preset direction. The positioning station includes a flip-up pusher seat, on both sides of which are provided with positioning frames that are rotatably connected to the slide plate. The outer side of the flip-up pusher seat is equipped with a transmission unit that pushes the positioning frames on both sides to rotate synchronously. The two positioning frames are respectively fixed to the polarizer and the glass substrate. Both sides of the flip-pushing base are embedded with ejection units that push the laser-cut display screen base material outwards. A switching unit is installed on the edge of the flip-up pusher; When the switching unit and the transmission unit are engaged, the transmission unit flips the positioning frames on both sides to a vertical state, and the positioning frames are vertically connected to the feeding channel. The positioning frames on both sides are horizontal. When the switching unit and the ejection unit are engaged, the ejection unit pushes the laser-cut display screen base material outward. While one set of positioning stations is cutting, another set of positioning stations remains vertically connected to the feeding channel after the display screen base material is horizontally ejected.

[0008] A further technical improvement of the present invention is that: the transmission unit includes two gears rotatably mounted on one side of the flipping push seat, the two gears are meshed, and the shaft in the middle of each gear is fixedly sleeved with a transmission rod that cooperates with the positioning frame on the corresponding side. A keyway is provided in the center of one gear, and a limit post is fixed on the outer side of the positioning frame. The surface of the transmission rod is provided with a sliding groove, which slides in a limiting position with the limiting post.

[0009] A further technical improvement of the present invention is that: the ejection unit includes a connecting shaft installed in the middle of the flipping push seat, and the surface of the connecting shaft is provided with a plurality of eccentric wheels, each eccentric wheel is provided with two protruding ends, and the two protruding ends of the eccentric wheel abut against a push rod; Each push rod has a limiting plate fixed to one end near the eccentric wheel. The inner wall of the flipping push seat has multiple limiting rods that slide in cooperation with the corresponding limiting plates. A spring is sleeved on the outside of the limiting rod, and the end of the spring is fixed to the corresponding limiting plate.

[0010] A further technical improvement of the present invention is that: the switching unit includes an L-shaped extension plate, a stroke cylinder is installed on the inner side of the extension plate, a forward and reverse motor is installed at the pushing end of the stroke cylinder and slides along the bottom groove of the extension plate, a rotating shaft is installed at the driving end of the forward and reverse motor, and a key block is installed at the end of the rotating shaft and engages with the keyway.

[0011] A further technical improvement of the present invention is that: the surface of the flipping push seat is provided with an opening for the rotating shaft to pass through, and the side of the connecting shaft adjacent to the opening is provided with a keyway II, which is engaged with the key block.

[0012] A further technical improvement of the present invention is that: both sides of the processing chamber and one end adjacent to the positioning frame are provided with a transfer table, and the transfer table is lower than the height of the positioning frame; The positioning frame has a through hole on one end surface near the flip-pushing seat, which is used to cooperate with the corresponding push rod.

[0013] A further technical improvement of the present invention is that: the upper surface of the positioning frame is provided with several openings, and multiple vent pipes are embedded in the top of the cavity of the positioning frame. Multiple airbag components are installed at the bottom of each vent pipe, and a positioning block for pressing the display screen base material is installed at the bottom of the airbag component. Multiple venting tubes are connected together and then connected to an external air pump via hoses.

[0014] A further technical improvement of the present invention is that: the laser cutting unit includes a lifting plate pushed by a cylinder in the processing chamber. The lifting plate has an L-shaped structure. A sliding seat is slidably installed in the rail groove on the bottom surface of the lifting plate. Linear guide rails are installed on both sides of the sliding seat. A laser cutting head is installed on the slider of each linear guide rail. The outer side of the lifting plate is equipped with a stroke cylinder two that pushes the sliding seat to move.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting a switching unit and two sets of positioning stations, during the feeding stage, the switching unit engages with the transmission unit, and the positioning frames on both sides are flipped to a vertical state and vertically connected to the feeding channels on both sides of the processing chamber. The two display screen base materials are arranged correspondingly in the same set of positioning stations, and then cut along the same preset direction with the laser cutting unit. This reduces the contour error caused by different cutting references and clamping references, so that the polarizer and glass substrate form a matching cutting contour, thereby improving the dimensional consistency of the two. The two positioning frames on the other positioning station are flipped to a horizontal state, and the switching unit engages with the ejection unit. The ejection unit embedded on both sides inside the flipping push seat moves to push the cut display screen base material located in the positioning frames on both sides outward. The polarizer and glass substrate after cutting are smoothly ejected along the predetermined direction. After the current cutting station is completed and moved out of the processing area, the slide moves on the linear slide rail and sends the other set of positioning stations that have been fed into the processing chamber to continue laser cutting. The two sets of positioning stations alternately enter the processing chamber under the drive of the slide, and continuously cycle. 2. After the polarizer or glass substrate is vertically inserted into the vertical positioning frame and positioned in the predetermined position, gas is delivered through a hose to multiple interconnected vent pipes, and then distributed by each vent pipe to the corresponding airbag component. After the airbag component is inflated, it expands and extends, thereby pushing the positioning block installed at its bottom end into the positioning frame. This achieves synchronous inflation and deflation of multiple airbag components, making multiple positioning blocks move synchronously, thereby improving the consistency of the pressing action and pressing the surface of the display screen base material placed in the positioning frame. The distributed pressing of multiple positioning blocks reduces the possibility of displacement, warping, or shaking during the cutting process. 3. By setting up a laser cutting unit, the second stroke cylinder drives the sliding seat to slide in multiple segments along the rail groove on the bottom surface of the lifting plate. After the sliding seat slides to each opening, it pauses briefly. During the pause, the laser cutting heads on the two linear guide rails slide back and forth synchronously in the vertical direction, performing laser cutting processing on the polarizer and glass substrate within the positioning frames on both sides along the same path. Through the multiple segmented movements of the sliding seat and the vertical reciprocating cutting of the laser cutting heads at each stop position, the overall contour of the polarizer and glass substrate can be gradually cut, so that the two form consistent or matching cutting contours. The synchronous reciprocating cutting in the vertical direction at each stop position decomposes the overall cutting path into multiple segmented processing intervals, improving the stability of the cutting process and the path control accuracy. The laser cutting heads on both sides perform cutting along the same path, ensuring the consistency of the cutting contours of the polarizer and glass substrate. Attached Figure Description

[0016] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the external structure of the present invention; Figure 2 For the present invention Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the positioning frame of the present invention in a vertical state; Figure 4 This is a schematic diagram of the installation structure of the push rod and eccentric wheel of the present invention; Figure 5 This is a schematic diagram of the installation structure of the positioning block of the present invention; Figure 6 This is a schematic diagram of the three-dimensional mounting structure of the laser cutting head of the present invention.

[0018] In the diagram: 1. Processing chamber; 2. Feeding channel; 3. Transfer table; 4. Slide plate; 5. Linear guide rail one; 6. Positioning frame; 7. Flipping push seat; 8. Push rod; 9. Extension side plate; 10. Stroke cylinder one; 11. Rotating shaft; 12. Key block; 13. Transmission rod; 14. Keyway one; 15. Gear; 16. Connecting shaft; 17. Keyway two; 18. Limiting rod; 19. Spring; 20. Eccentric wheel; 21. Slide groove; 22. Limiting post; 23. Opening; 24. Vent pipe; 25. Airbag component; 26. Positioning block; 27. Through hole; 28. Lifting plate; 29. ​​Stroke cylinder two; 30. Sliding seat; 31. Linear guide rail two; 32. Laser cutting head. Detailed Implementation

[0019] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0020] Please see Figures 1-6 As shown, the present invention provides a liquid crystal display screen laser cutting device, including a processing chamber 1 installed in the middle of the substrate, a linear slide rail 5 passing through the interior of the processing chamber 1 installed in the middle of the substrate, a slide plate 4 installed on the slider of the linear slide rail 5, and two sets of positioning stations provided on the slide plate 4. Both sides of the processing chamber 1 are provided with feeding channels 2 for vertical entry of the display screen base material, and the interior of the processing chamber 1 is equipped with a laser cutting unit that cuts the display screen base material along the same preset direction. The positioning station includes a flip-up pusher 7. Both sides of the flip-up pusher 7 are provided with positioning frames 6 that are rotatably connected to the slide plate 4. The outer side of the flip-up pusher 7 is equipped with a transmission unit that pushes the positioning frames 6 on both sides to rotate synchronously. The two positioning frames 6 fix the polarizer and the glass substrate respectively. Both sides of the inside of the flip-pushing base 7 are embedded with ejection units that push the laser-cut display screen base material outwards. A switching unit is installed on the edge of the flip-up pusher 7; When the switching unit and the transmission unit are engaged, the transmission unit flips the positioning frames 6 on both sides to a vertical state, and the positioning frames 6 are vertically connected to the feeding channel 2. The positioning frames 6 on both sides are in a horizontal state. When the switching unit and the ejection unit are engaged, the ejection unit pushes the laser-cut display screen base material outward.

[0021] Two sets of positioning stations move with the slide plate 4 and alternately enter the processing chamber 1 for cutting, realizing a cycle of cutting and loading / unloading.

[0022] The display screen base materials are polarizers and glass substrates. During the feeding stage, the positioning frames 6 on both sides are flipped to a vertical position and vertically connected to the feeding channels 2 on both sides of the processing chamber 1. At this time, the polarizers and glass substrates enter the positioning frames 6 on both sides along the corresponding feeding channels 2, realizing automatic feeding and receiving positioning. The positioning frames 6 on both sides support and fix the polarizers and glass substrates respectively. The two display screen base materials are arranged correspondingly, so that the two display screen base materials are arranged correspondingly in the same set of positioning stations. Then, in conjunction with the laser cutting unit, they are cut along the same preset direction to reduce the contour error caused by different cutting references and different clamping references, so that the polarizers and glass substrates form matching cutting contours, thereby improving the dimensional consistency of the two and providing favorable conditions for subsequent bonding.

[0023] When entering the processing chamber 1, the positioning frames 6 on both sides remain vertical and reach the working position of the laser cutting unit. At this time, the laser cutting unit lowers its height and cuts the display screen base material in the positioning frames 6 on both sides along the same preset direction. The cutting path is executed in the same preset direction so that the polarizer and the glass substrate form a consistent cutting contour. After the cutting is completed, the cut display screen base material is still kept in the corresponding positioning frame 6.

[0024] While cutting is being performed at one positioning station, the two positioning frames 6 at another positioning station flip to a horizontal position, and the switching unit engages with the ejection unit. At this time, the ejection units embedded on both sides inside the flipping pusher 7 activate, pushing the cut display substrate material located in the positioning frames 6 on both sides outward. Since the positioning frames 6 on both sides are in a horizontal position at this time, the ejection unit can smoothly eject the cut polarizer and glass substrate in a predetermined direction, facilitating subsequent collection, transfer, or bonding operations.

[0025] After the horizontal ejection of the display substrate is completed, the switching unit engages with the transmission unit, causing the two positioning frames 6 to flip to a vertical position, maintaining vertical communication with the feeding channel 2 for the feeding of new polarizers and glass substrates. Once the current cutting station has finished processing and moved out of the processing area, the slide plate 4 moves on the linear guide rail 5, sending another set of already-fed positioning stations into the processing chamber 1 for continued laser cutting. Thus, the two sets of positioning stations alternately enter the processing chamber 1 under the drive of the slide plate 4, forming a continuous cyclic operation mode.

[0026] See Figure 2 and Figure 3 As shown, the transmission unit includes two gears 15 rotatably mounted on one side of the flipping push seat 7. The two gears 15 are meshed. The shaft in the middle of each gear 15 is fixedly sleeved with a transmission rod 13 that cooperates with the positioning frame 6 on the corresponding side. A keyway 14 is provided in the center of one gear 15. A limit post 22 is fixed on the outer side of the positioning frame 6. The surface of the transmission rod 13 is provided with a sliding groove 21, which slides in a limited manner with the limiting post 22.

[0027] When the switching unit is engaged with keyway 14, it drives one of the gears 15 to rotate around its own axis. Since the two gears 15 mesh with each other, the other gear 15 rotates synchronously in the opposite direction. When the gear 15 rotates, it synchronously drives the two transmission rods 13 to rotate. When the transmission rods 13 rotate, the slide 21 applies a pushing action to the limiting post 22, thereby causing the positioning frame 6 to rotate around the rotational connection between it and the slide plate 4. The two positioning frames 6 move synchronously, realizing the switching from the vertical feeding state to the horizontal pushing state.

[0028] See Figure 4 As shown, the ejection unit includes a connecting shaft 16 installed in the middle of the flipping push seat 7. The surface of the connecting shaft 16 is provided with a number of eccentric wheels 20. Each eccentric wheel 20 is provided with two protruding ends, and the two protruding ends of the eccentric wheel 20 abut against the push rod 8. Each push rod 8 has a limiting plate fixed to one end adjacent to the eccentric wheel 20. The inner wall of the flipping push seat 7 is fixed with multiple limiting rods 18 that slide in cooperation with the corresponding limiting plates. A spring 19 is sleeved on the outside of the limiting rod 18, and the end of the spring 19 is fixed to the corresponding limiting plate.

[0029] When the connecting shaft 16 rotates, several eccentric wheels 20 mounted on its surface rotate synchronously. Because the outer contour of each eccentric wheel 20 has an eccentricity, and each eccentric wheel 20 has two protruding ends, during rotation, its protruding ends periodically press against the push rod 8 it abuts. When the protruding end of the eccentric wheel 20 rotates to contact the push rod 8 and applies a pushing force, the push rod 8 moves outward, pushing out the cut display screen base material placed in the positioning frame 6, causing it to move out of its original positioning position for subsequent collection or transfer. During this process, the elastic spring 19 is compressed. When the protruding end of the eccentric wheel 20 rotates away from the push rod 8, the spring 19 releases its elastic restoring force, driving the push rod 8 to move in the opposite direction and reset, preparing for the next ejection action. Thus, as the connecting shaft 16 continues to rotate, each push rod 8 can periodically extend and retract under the combined action of the eccentric wheel 20 and the spring 19.

[0030] See Figure 2 and Figure 4 As shown, the switching unit includes an L-shaped extension plate 9. A stroke cylinder 10 is installed on the inner side of the extension plate 9. A forward and reverse motor that slides along the bottom groove of the extension plate 9 is installed at the pushing end of the stroke cylinder 10. A rotating shaft 11 is installed at the driving end of the forward and reverse motor. A key block 12 that engages with the keyway 14 is installed at the end of the rotating shaft 11. The surface of the flip-pushing seat 7 is provided with an opening for the rotating shaft 11 to pass through. The connecting shaft 16 is provided with a keyway 17 on one side adjacent to the opening. The keyway 17 is engaged with the key block 12.

[0031] When the drive unit needs to be driven, the stroke cylinder 10 pushes the forward and reverse motors to move, so that the key block 12 aligns and engages with the keyway 14 in the center of one of the gears 15. At this time, the forward and reverse motors start and drive the rotating shaft 11 to rotate. The rotating shaft 11 transmits torque to the gear 15 through the key block 12, and then drives the transmission rods 13 on both sides to rotate synchronously through the meshing transmission of the two gears 15, thereby driving the positioning frames 6 on both sides to rotate synchronously, realizing the switching of the positioning frames 6 between the vertical feeding state and the horizontal state.

[0032] When the ejection unit needs to be driven, the stroke cylinder 10 actuates again, pushing the forward and reverse motors to move along the track groove, causing the key block 12 to disengage from the keyway 14 and move to align and engage with the keyway 17 on the connecting shaft 16. At this time, the torque output by the forward and reverse motors is transmitted to the connecting shaft 16, causing the connecting shaft 16 to rotate, which in turn drives the eccentric wheel 20 on it to rotate, causing the push rod 8 to extend and push the cut display screen base material outward. Switching between the transmission unit and the ejection unit, the positioning frame 6 is flipped and the push rod 8 is ejected, respectively, completing two actions.

[0033] See Figure 5 As shown, both sides of the processing chamber 1 and one end adjacent to the positioning frame 6 are provided with a transfer table 3, and the transfer table 3 is lower than the height of the positioning frame 6. The positioning frame 6 has a through hole 27 on one end surface adjacent to the flip-pushing seat 7, which is used to cooperate with the corresponding push rod 8.

[0034] After the push rod 8 extends outward and enters the corresponding through hole 27, it can extend from the inside of the flip-up push seat 7 to the inside of the horizontal positioning frame 6, directly pushing out the polarizing film and glass substrate that are cut on both sides at the same time. It moves outward from the position of the positioning frame 6 and slides onto the corresponding side of the removal platform 3. The display substrate forms a height difference transition during the pushing process, which is conducive to smoothly leaving the positioning frame 6 and avoiding stopping at the edge of the positioning frame 6.

[0035] See Figure 1 and Figure 5 As shown, the upper surface of the positioning frame 6 is provided with several openings 23, and multiple vent pipes 24 are embedded in the top of the cavity of the positioning frame 6. Multiple airbag components 25 are installed at the bottom of each vent pipe 24, and a positioning block 26 for pressing the display screen base material is installed at the bottom of the airbag component 25. Multiple venting tubes 24 are connected together and connected to an external air pump via hoses.

[0036] Once the polarizer or glass substrate is vertically inserted into the vertical positioning frame 6 and positioned at the predetermined location, the external air pump is activated. Gas is delivered via hoses to multiple interconnected vent pipes 24, which then distribute the gas to the corresponding airbag components 25. After inflation, the airbag components 25 expand and extend, pushing the positioning blocks 26 mounted at their bottom into the positioning frame 6. This allows for the synchronous inflation and deflation of multiple airbag components 25, enabling the multiple positioning blocks 26 to move synchronously. This improves the consistency of the pressing action and presses the surface of the display substrate placed in the positioning frame 6. The distributed pressing of multiple positioning blocks 26 keeps the polarizer or glass substrate in a relatively stable fixed state within the positioning frame 6, reducing the possibility of displacement, warping, or shaking during the cutting process. When cutting is completed or unloading is required, the external air pump stops supplying gas or depressurizes, the airbag components 25 gradually retract, and the positioning blocks 26 move upwards, releasing the pressure on the display substrate. This does not affect subsequent flipping, ejection, and transfer actions.

[0037] See Figure 1 and Figure 6 As shown, the laser cutting unit includes a lifting plate 28 pushed by a hydraulic cylinder in the processing chamber 1. The lifting plate 28 has an L-shaped structure. A sliding seat 30 is slidably installed in the rail groove on the bottom surface of the lifting plate 28. Linear guide rails 31 are installed on both sides of the sliding seat 30. A laser cutting head 32 is installed on the slider of each linear guide rail 31. The outer side of the lifting plate 28 is equipped with a stroke cylinder 29 that pushes the sliding seat 30 to move.

[0038] After a set of positioning stations moves into the processing chamber 1 along with the slide plate 4, and the two positioning frames 6 remain vertical, the lifting plate 28 moves downward, so that the sliding seat 30 and each laser cutting head 32 descend to a processing height that matches the display screen base material to be cut. After the lifting plate 28 descends to the predetermined position, the second stroke cylinder 29 drives the sliding seat 30 to slide in multiple segments along the track groove on the bottom surface of the lifting plate 28. After the sliding seat 30 slides to a predetermined position (i.e., each opening 23), it pauses briefly. During the pause, the laser cutting heads 32 on the two linear guide rails 31 slide back and forth synchronously in the vertical direction, performing laser cutting processing on the polarizer and glass substrate within the positioning frames 6 on both sides along the same path. Through the multiple segmented movements of the sliding seat 30 and the vertical reciprocating cutting of the laser cutting heads 32 at each stop position, the overall contour of the polarizer and glass substrate can be gradually cut, so that the two form consistent or matching cutting contours. The synchronous reciprocating cutting along the vertical direction at each stop position decomposes the overall cutting path into multiple segmented processing intervals, improving the stability of the cutting process and the path control accuracy. The laser cutting heads 32 on both sides perform cutting along the same path, ensuring the consistency of the cutting contours of the polarizer and glass substrate, and improving the subsequent bonding accuracy.

[0039] In use, this invention employs a switching unit and two sets of positioning stations. During the loading stage, the switching unit engages with the transmission unit, and the positioning frames 6 on both sides are flipped to a vertical position, vertically connecting with the loading channels 2 on both sides of the processing chamber 1. The two display screen substrates are arranged correspondingly in the same set of positioning stations, and then cut along the same preset direction using a laser cutting unit. This reduces contour errors caused by different cutting and clamping references, ensuring that the polarizer and glass substrate form matching cutting contours, thereby improving dimensional consistency. The two positioning stations on the other positioning station... Position frame 6 flips to a horizontal state, the switching unit and the ejection unit engage, the ejection units embedded on both sides of the flipping push seat 7 move, pushing the cut display base material located in the positioning frames 6 on both sides outward, and smoothly ejecting the polarizer and glass substrate after cutting in a predetermined direction. After the current cutting station is completed and moved out of the processing area, the slide plate 4 moves on the linear slide rail 5, sending another set of positioning stations that have been loaded into the processing chamber 1 to continue laser cutting. The two sets of positioning stations alternately enter the processing chamber 1 under the drive of the slide plate 4, and continuously cycle. After the polarizer or glass substrate is vertically inserted into the vertical positioning frame 6 and positioned in the predetermined position, gas is delivered through a hose to multiple interconnected vent pipes 24, and then distributed by each vent pipe 24 to the corresponding airbag component 25. After the airbag component 25 is inflated, it expands and extends, thereby pushing the positioning block 26 installed at its bottom end into the positioning frame 6, realizing the synchronous inflation and deflation of multiple airbag components 25, and making multiple positioning blocks 26 move synchronously, thereby improving the consistency of the pressing action and pressing the surface of the display screen base material placed in the positioning frame 6. The distributed pressing of multiple positioning blocks 26 reduces the possibility of displacement, warping or shaking during the cutting process. By setting up a laser cutting unit, the second stroke cylinder 29 drives the sliding seat 30 to slide in multiple segments along the rail groove on the bottom surface of the lifting plate 28. The sliding seat 30 pauses briefly after sliding to each opening 23. During the pause, the laser cutting heads 32 on the two linear guide rails 31 slide back and forth synchronously in the vertical direction, respectively performing laser cutting processing on the polarizer and glass substrate within the positioning frames 6 on both sides along the same path. Through the multiple segmented movements of the sliding seat 30 and the vertical reciprocating cutting of the laser cutting heads 32 at each stop position, the overall contour of the polarizer and glass substrate can be cut gradually, so that the two form consistent or matching cutting contours. The synchronous reciprocating cutting in the vertical direction at each stop position decomposes the overall cutting path into multiple segmented processing intervals, improving the stability of the cutting process and the path control accuracy. The laser cutting heads 32 on both sides perform cutting along the same path, ensuring the consistency of the cutting contour of the polarizer and glass substrate.

[0040] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A laser cutting apparatus for a liquid crystal display screen, comprising a processing chamber (1) installed in the middle of a substrate, characterized in that: A linear slide rail (5) passing through the interior of the processing chamber (1) is installed in the middle of the substrate. A slide plate (4) is installed on the slider of the linear slide rail (5). Two sets of positioning stations are provided on the slide plate (4). Both sides of the processing chamber (1) are provided with feeding channels (2) for vertical entry of display screen base material, and the interior of the processing chamber (1) is equipped with a laser cutting unit that cuts the display screen base material along the same preset direction. The positioning station includes a flip-up pusher (7), and both sides of the flip-up pusher (7) are provided with positioning frames (6) that are rotatably connected to the slide plate (4). The outer side of the flip-up pusher (7) is equipped with a transmission unit that pushes the positioning frames (6) on both sides to rotate synchronously. The two positioning frames (6) fix the polarizer and the glass substrate respectively. Both sides of the inside of the flip-pushing base (7) are embedded with ejection units that push the laser-cut display screen base material outward; A switching unit is installed on the edge of the flip-up pusher (7); When the switching unit and the transmission unit are engaged, the transmission unit flips the positioning frames (6) on both sides into a vertical state, and the positioning frames (6) are vertically connected to the feeding channel (2); The positioning frames (6) on both sides are in a horizontal state. When the switching unit and the top-out unit are engaged, the laser-cut display screen base material is pushed outward by the top-out unit. When one set of positioning stations is cutting, the other set of positioning stations remains vertically connected to the feeding channel (2) after the horizontal ejection of the display screen base material is completed.

2. The liquid crystal display screen laser cutting device according to claim 1, characterized in that, The transmission unit includes two gears (15) rotatably mounted on one side of the flipping push seat (7). The two gears (15) are meshed. The shaft in the middle of each gear (15) is fixedly sleeved with a transmission rod (13) that cooperates with the positioning frame (6) on the corresponding side. A keyway (14) is provided in the center of one gear (15). A limit post (22) is fixed on the outer side of the positioning frame (6). The surface of the transmission rod (13) is provided with a groove (21), and the groove (21) slides in a limiting position with the limiting post (22).

3. The liquid crystal display screen laser cutting device according to claim 1, characterized in that, The ejection unit includes a connecting shaft (16) installed in the middle of the flipping push seat (7). The surface of the connecting shaft (16) is provided with a number of eccentric wheels (20). Each eccentric wheel (20) is provided with two protruding ends, and the two protruding ends of the eccentric wheel (20) abut against the push rod (8). Each push rod (8) has a limiting plate fixed at one end near the eccentric wheel (20). The inner wall of the flip push seat (7) is fixed with a plurality of limiting rods (18) that slide in cooperation with the corresponding limiting plate. A spring (19) is sleeved on the outside of the limiting rod (18), and the end of the spring (19) is fixed to the corresponding limiting plate.

4. The liquid crystal display screen laser cutting device according to claim 2, characterized in that, The switching unit includes an L-shaped extension plate (9), on the inner side of the extension plate (9) a stroke cylinder (10) is installed, the pushing end of the stroke cylinder (10) is equipped with a forward and reverse motor that slides along the bottom groove of the extension plate (9), the driving end of the forward and reverse motor is equipped with a rotating shaft (11), and the end of the rotating shaft (11) is equipped with a key block (12) that engages with the keyway (14).

5. The liquid crystal display screen laser cutting device according to claim 4, characterized in that, The surface of the flip-pushing seat (7) is provided with an opening for the rotating shaft (11) to pass through. The connecting shaft (16) is provided with a keyway two (17) on one side adjacent to the opening. The keyway two (17) is engaged with the key block (12).

6. The liquid crystal display screen laser cutting device according to claim 1, characterized in that, The processing chamber (1) is provided with a transfer table (3) on both sides and at one end adjacent to the positioning frame (6), and the transfer table (3) is lower than the height of the positioning frame (6); The positioning frame (6) has a through hole (27) on one end surface near the flip push seat (7) for the corresponding push rod (8) to pass through.

7. The liquid crystal display screen laser cutting device according to claim 1, characterized in that, The upper surface of the positioning frame (6) is provided with several openings (23), and multiple vent pipes (24) are embedded in the top of the cavity of the positioning frame (6). Multiple airbag components (25) are installed at the bottom of each vent pipe (24), and a positioning block (26) for pressing the display screen base material is installed at the bottom of the airbag component (25). Multiple vent tubes (24) are connected together and connected to an external air pump via hoses.

8. The laser cutting device for a liquid crystal display screen according to claim 1, characterized in that, The laser cutting unit includes a lifting plate (28) pushed by a hydraulic cylinder in the processing chamber (1). The lifting plate (28) has an L-shaped structure. A sliding seat (30) is slidably installed in the rail groove on the bottom surface of the lifting plate (28). Linear guide rails (31) are installed on both sides of the sliding seat (30). A laser cutting head (32) is installed on the slider of each linear guide rail (31). The outer side of the lifting plate (28) is equipped with a stroke cylinder two (29) that pushes the sliding seat (30) to move.

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