Laser cutting equipment for display screen manufacturing and processing

Abstract

This invention relates to the field of laser cutting equipment, and more particularly to a laser cutting equipment for display screen production and processing. The laser cutting equipment for display screen production and processing of this invention includes a lifting mechanism that controls an upper clamping plate to cooperate with a lower clamping plate to hold the display screen. Through the water-cooling structure of the lower clamping plate and the heat dissipation structure of the upper clamping plate, the display screen unit obtained after laser cutting is less prone to breakage. The electromagnet of the lower clamping plate generates electromagnetic attraction, controlling the upper clamping plate to press down, thereby clamping the display screen unit. The clamping force can be precisely adjusted by regulating the electromagnetic attraction of the electromagnet, reducing the clamping pressure on the display screen unit. High-temperature fumes and high-temperature debris ejected downwards are blown into the cooling water in the grid groove structure, preventing the accumulation of high-temperature heat in the electrically controlled moving carrier.

Description

Technical Field

[0001] This invention relates to the field of laser cutting equipment, and more particularly to a laser cutting equipment for display screen manufacturing and processing. Background Technology

[0002] In the laser cutting process of displays, some special material displays typically use high thermal conductivity glass or ceramic substrates, which have extremely high hardness and brittleness. To ensure safety and precision during processing, operators must use metal clamps equipped with heat dissipation structures to hold the displays. These clamps not only need to quickly conduct away the high temperature generated during laser cutting through heat-conducting strips to prevent the displays from generating internal pressure due to excessive local heat absorption, thus avoiding the risk of cracking due to excessive thermal stress, but also need to position and clamp the individual displays being laser-cut to prevent positional displacement. Among these, the clamping force parameter is difficult to control precisely. If the clamping force is set too high, although it can effectively prevent the individual displays being laser-cut from shifting due to vibration or thermal expansion, at the same time, the edges or stress points of the displays will be subjected to excessive mechanical compression. Furthermore, during the laser cutting process, the display material will undergo thermal expansion due to high temperature. If the clamping force cannot be released appropriately, the restricted thermal expansion will lead to huge compressive stress inside the material. This stress concentration often causes micro-cracks at the edges or clamping points of the individual displays, which will then evolve into obvious cracks or breakage. Summary of the Invention

[0003] In order to overcome the shortcomings of laser cutting of displays, such as the difficulty in precisely controlling the clamping force of the clamping plate and the tendency for excessive clamping force to cause the display unit to break, this invention provides a laser cutting equipment for display production and processing.

[0004] The technical solution is as follows: A laser cutting equipment for display screen manufacturing and processing includes a worktable, a laser cutting machine, an electrically controlled moving carrier, a lower clamping plate, an upper clamping plate, an electromagnet, a liquid infusion pipe, a waste liquid pipe, and a lifting mechanism; the laser cutting machine is installed on the worktable; the electrically controlled moving carrier is slidably connected to the worktable; several lower clamping plates are fixed in a matrix on the electrically controlled moving carrier; an upper clamping plate is placed on the lower clamping plate; a lifting mechanism that drives the upper clamping plate to move up and down is connected to the worktable; an electromagnet is installed on the lower clamping plate; the upper clamping plate is a composite plate structure formed by pressing an upper steel sheet layer and a lower copper sheet layer together; a liquid infusion pipe and a waste liquid pipe are sequentially fixed to the electrically controlled moving carrier; a water-cooled guide channel structure is provided inside the lower clamping plate, and the inlet end of the water-cooled guide channel structure of the lower clamping plate is connected to the liquid infusion pipe, and the outlet end of the water-cooled guide channel structure of the lower clamping plate is connected to the waste liquid pipe.

[0005] To further clarify, the lower clamping plate uses a thermally conductive copper plate material.

[0006] To further explain, the upper clamping plate has a heat dissipation groove structure.

[0007] To further explain, a magnetic plate is fixedly attached to the lower clamp and closely attached to the electromagnet.

[0008] To further explain, the electrically controlled moving carrier plate has a grid groove structure that surrounds all the lower clamping plates.

[0009] To further explain, the rear side of the electrically controlled moving carrier is fixedly connected to an outflow pipe that connects to the grid groove structure; the outflow pipe connects to the infusion pipe; the front side of the electrically controlled moving carrier is fixedly connected to an inflow pipe that connects to the grid groove structure; the inflow pipe connects to the waste liquid pipe.

[0010] To further clarify, defoamer was added to the cooling water used.

[0011] To further explain, the lifting mechanism consists of a lifting plate, an electrically controlled lifting machine, an air extraction pipe, and suction cups; the lifting plate is slidably connected to the worktable; the electrically controlled lifting machine is installed on the worktable; the telescopic end of the electrically controlled lifting machine is fixedly connected to the lifting plate; an air extraction pipe is provided on the lifting plate; suction cups are provided at the bottom of the lifting plate, corresponding in number and position to the upper clamping plate, and the suction cups are connected to the air extraction pipe.

[0012] To further explain, the upper clamping plate is provided with a sinking trough structure that is compatible with the suction cup structure.

[0013] To further explain, a miniature electronically controlled telescopic rod is installed inside the suction cup; the groove structure of the upper clamping plate has a through hole structure aligned with the miniature electronically controlled telescopic rod.

[0014] The beneficial effects of this invention are as follows: This invention provides a laser cutting equipment for display screen production and processing. The lifting mechanism controls the upper clamping plate to cooperate with the lower clamping plate to clamp the display screen. Through the water-cooling structure of the lower clamping plate and the heat dissipation structure of the upper clamping plate, the display screen unit after laser cutting is less likely to break. The electromagnet of the lower clamping plate controls the upper clamping plate to press down through the electromagnetic attraction, thereby clamping the display screen unit. The clamping force can be precisely adjusted by adjusting the electromagnetic attraction of the electromagnet, reducing the clamping pressure on the display screen unit. The high-temperature fumes and high-temperature debris sprayed downwards are blown into the cooling water in the grid groove structure, avoiding the accumulation of high temperature heat in the electrically controlled moving tray. When the lifting mechanism controls the upper clamping plate to pick up the display screen unit after laser cutting, it can also help the workers quickly remove broken display screen units. This solves the technical problem that in the laser cutting process of display screens, it is difficult to precisely control the clamping force of the clamping plate, and excessive clamping force can easily cause the display screen unit to break. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a three-dimensional structural diagram of the lower clamping plate of the present invention;

[0017] Figure 3 This is a three-dimensional structural diagram of the electrically controlled moving carrier disk of the present invention;

[0018] Figure 4 This is a three-dimensional structural diagram of the infusion tube and waste tube of the present invention;

[0019] Figure 5 This is a three-dimensional structural diagram of the upper clamping plate of the present invention;

[0020] Figure 6 This is a three-dimensional structural diagram of the lifting plate of the present invention;

[0021] Figure 7 This is a three-dimensional structural diagram of the miniature electronically controlled telescopic rod of the present invention.

[0022] Reference numerals: 11-Workbench, 12-Laser cutting machine, 13-Electrically controlled moving carrier plate, 1301-Grid groove structure, 21-Lower clamping plate, 22-Upper clamping plate, 2201-Heat dissipation groove structure, 2202-Submerged groove structure, 2203-Through hole structure, 23-Electromagnetic body, 24-Magnetic plate, 31-Infusion pipe, 32-Waste liquid pipe, 33-Outflow pipe, 34-Inflow pipe, 41-Lifting plate, 42-Electrically controlled lifting machine, 43-Evacuation pipe, 44-Suction cup, 45-Miniature electrically controlled telescopic rod. Detailed Implementation

[0023] The invention will now be described more fully below with reference to the accompanying drawings, in which presently preferred embodiments of the invention are illustrated. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the invention to those skilled in the art.

[0024] Example 1: A laser cutting equipment for display screen manufacturing and processing, such as... Figures 1-5As shown, the system includes a worktable 11, a laser cutter 12, an electrically controlled moving carrier 13, lower clamping plates 21, upper clamping plates 22, an electromagnet 23, an infusion tube 31, a waste tube 32, and a lifting mechanism. The laser cutter 12 is mounted on the worktable 11. The electrically controlled moving carrier 13 is slidably connected to the worktable 11. Several lower clamping plates 21 are fixed in a matrix on the electrically controlled moving carrier 13. Each lower clamping plate 21 has an upper clamping plate 22 placed on it, and the areas of the upper clamping plates 22 and lower clamping plates 21 facing each other are the same. A lifting mechanism is connected to the worktable 11 to drive all the upper clamping plates 22 to move up and down synchronously. Each lower clamping plate 21 has an electromagnet 23 mounted on it. All upper clamping plates 22 are composite plate structures made of an upper steel sheet layer and a lower copper sheet layer pressed together, and the upper steel sheet layer can generate electricity with the electromagnet 23. Magnetic attraction allows the lower copper sheet layer to serve as a heat dissipation material; a liquid inlet pipe 31 is fixedly connected to the rear side of the electrically controlled moving carrier 13, and the liquid inlet pipe 31 is externally connected to a cooling water delivery device; a waste liquid pipe 32 is fixedly connected to the front side of the electrically controlled moving carrier 13, and the waste liquid pipe 32 is externally connected to a waste liquid treatment device; each lower clamping plate 21 is provided with a water-cooled guide channel structure, and the inlet end of the water-cooled guide channel structure of the lower clamping plate 21 is connected to the liquid inlet pipe 31, and the outlet end of the water-cooled guide channel structure of the lower clamping plate 21 is connected to the waste liquid pipe 32; all lower clamping plates 21 are made of thermally conductive copper plate material; each upper clamping plate 22 has several heat dissipation groove structures 2201; each lower clamping plate 21 is fixedly connected to a magnetic plate 24, and the magnetic plate 24 is in close contact with the electromagnet 23, and the magnetic plate 24 can increase the electromagnetic attraction area generated by the electromagnet 23 on the upper clamping plate 22.

[0025] When using a laser cutting equipment for manufacturing a display screen according to this embodiment, the operator first controls the lifting mechanism to lift all the upper clamping plates 22 upwards, and then places a display screen made of a whole piece of raw material between all the lower clamping plates 21. The operator then controls the lifting mechanism to simultaneously lower all the upper clamping plates 22 onto the display screen. At this time, the electromagnet 23 on the lower clamping plate 21, together with the magnetic plate 24, generates an electromagnetic attraction force on the corresponding upper clamping plate 22 through the display screen. Under the combined action of the electromagnetic attraction force and its own weight, the upper clamping plate 22 is pressed tightly onto the display screen. The lower clamping plate 21 and the upper clamping plate 22 firmly clamp the display screen. At this time, the display screen is held between the lower clamping plate 21 and the upper clamping plate 22. Since the upper clamping plate 22 is relatively light, and the electromagnetic attraction force generated by the electromagnet 23 on the upper steel sheet layer in the upper clamping plate 22 is weakened by the lower copper sheet layer, the clamping force on the display screen from the lower clamping plate 21 and the upper clamping plate 22 is small. This clamping force is only used to prevent the display screen from shifting.

[0026] After the lifting mechanism is lifted away from all the upper clamping plates 22, the electrically controlled moving carrier plate 13 moves the display screens held together by all the lower clamping plates 21 and the corresponding upper clamping plates 22 to the bottom of the laser cutting machine 12. The laser cutting machine 12 then sequentially laser-cuts each area of ​​the display screen, resulting in individual display screen units. Simultaneously, an external cooling water supply device delivers cooling water to the water-cooled guide channel structure of each lower clamping plate 21 through the liquid delivery pipe 31. The cooling water flows into the waste liquid pipe 32 and is discharged into the external waste liquid treatment device. The continuous flow of cooling water in the water-cooled guide channel structure of the lower clamping plate 21 mainly performs water cooling treatment on the laser-cut display screen units. At the same time, the protective gas sprayed downward from the laser cutting machine 12 acts as a cooling airflow, blowing over the heat dissipation groove structure 2201 of the upper clamping plate 22. The air cooling treatment of the heat dissipation groove structure 2201 on the upper clamping plate 22 enhances the cooling effect on the display screen units.

[0027] During the laser cutting process of a display screen unit by the laser cutting machine 12, as the high-temperature heat emitted by the laser cutting machine 12 continuously accumulates in the edge area of ​​the display screen unit, the edge area of ​​the display screen unit undergoes slight thermal expansion due to the heat. At this time, the electromagnet 23 in the lower clamping plate 21 corresponding to the display screen unit performs low-power fine-tuning, slightly reducing the electromagnetic attraction force generated on the corresponding upper clamping plate 22, thereby slightly reducing the clamping force exerted on the display screen unit by the lower clamping plate 21 and the upper clamping plate 22. Simultaneously, the thermally expanded display screen unit can slightly push the upper clamping plate 22 upward, allowing the accumulated heat within the display screen unit to... Thermal stress is released in time, and the lower clamping plate 21 and the upper clamping plate 22 keep the display unit clamped to prevent displacement. After the laser cutting process of the display unit is completed, as the display unit is continuously cooled down, the small thermal expansion of the display unit will gradually recover. At the same time, the electromagnet 23 in the lower clamping plate 21 corresponding to the display unit is finely adjusted with low power to slightly increase the electromagnetic attraction force generated on the corresponding upper clamping plate 22, thereby slightly increasing the clamping force applied by the lower clamping plate 21 and the upper clamping plate 22 to the display unit, and the lower clamping plate 21 and the upper clamping plate 22 firmly clamp the display unit.

[0028] Example 2, based on Example 1 above, as follows: Figures 1-5 As shown, the electrically controlled moving carrier 13 of this embodiment has a grid groove structure 1301, and each lower clamping plate 21 is surrounded by the grid groove structure 1301; an outflow pipe 33 connected to the grid groove structure 1301 is fixedly connected to the rear side of the electrically controlled moving carrier 13; the outflow pipe 33 is connected to the infusion pipe 31; an inflow pipe 34 connected to the grid groove structure 1301 is fixedly connected to the front side of the electrically controlled moving carrier 13; the inflow pipe 34 is connected to the waste liquid pipe 32; a defoamer (such as a silicone oil defoamer) is added to the cooling water.

[0029] When using a laser cutting device for manufacturing a display screen according to this embodiment, part of the cooling water in the inlet pipe 31 flows out through the outlet pipe 33 into the grid groove structure 1301 of the electrically controlled moving carrier 13. The cooling water then enters the inlet pipe 34 and flows into the waste liquid pipe 32, so that cooling water continuously flows in the grid groove structure 1301 of the electrically controlled moving carrier 13. The high-temperature fumes ejected downward from the laser cutting machine 12 and the high-temperature debris generated by the laser cutting work are blown downward into the cooling water in the grid groove structure 1301. The cooling water absorbs the high-temperature fumes and high-temperature debris, avoiding the accumulation of high-temperature heat in the electrically controlled moving carrier 13. The defoamer added to the cooling water can reduce the surface tension of the liquid, thereby preventing a large amount of cooling water from splashing when the high-temperature fumes rush into the liquid surface.

[0030] Example 3, based on Example 1 above, as follows: Figures 1-7 As shown, the lifting mechanism in this embodiment consists of a lifting plate 41, an electrically controlled lifting machine 42, an air extraction pipe 43, and a suction cup 44. The lifting plate 41 is slidably connected to the workbench 11. An electrically controlled lifting machine 42 that drives the lifting plate 41 to move up and down is installed on the workbench 11. An air extraction pipe 43 is provided on the lifting plate 41, and the air extraction pipe 43 is connected to a vacuum suction machine. The bottom of the lifting plate 41 is provided with suction cups 44 that correspond in number and position to the upper clamping plates 22, and the suction cups 44 are connected to the air extraction pipe 43. Each upper clamping plate 22 has a groove structure 2202 adapted to the structure of the suction cup 44. Each suction cup 44 is equipped with a miniature electrically controlled telescopic rod 45. Each groove structure 2202 of each upper clamping plate 22 has a through hole structure 2203 aligned with the miniature electrically controlled telescopic rod 45.

[0031] When using a laser cutting equipment for display screen production in this embodiment, when the upper clamping plate 22 needs to be raised, the electric lifting machine 42 drives the lifting plate 41 to move downward until all the suction cups 44 on the lifting plate 41 are inserted into the corresponding groove structure 2202 of the upper clamping plate 22. Then, the external vacuum suction machine performs suction work on each suction cup 44 through the suction pipe 43. The suction cups 44 suck up the corresponding upper clamping plate 22, and the electric lifting machine 42 drives the lifting plate 41 to rise. At this time, the lifting plate 41 pulls the upper clamping plate 22 upward through the suction cups 44. Although the upper clamping plate 22 has a through hole structure 2203, it is relatively light, and the suction force provided by the vacuum suction machine is sufficient to attract and lift it.

[0032] If there is a display unit that has undergone laser cutting between the upper clamping plate 22 and the lower clamping plate 21, the suction cup 44 sucks the display unit through the through hole structure 2203 of the upper clamping plate 22, allowing the display unit to be lifted upwards along with the upper clamping plate 22. If a display unit has broken due to local overheating, only the part of the broken display unit that is sucked by the suction cup 44 can be lifted upwards along with the upper clamping plate 22. At this time, the operator can clearly observe that the display unit is in an incomplete structure with a breakage. The operator only needs to control the miniature electronically controlled telescopic rod 45 corresponding to the broken display unit downwards. Inserting the suction cup 44 into the through hole structure 2203 of the upper clamping plate 22 will disconnect the suction force of the shattered display screen unit, allowing the shattered display screen unit to fall downwards back onto the corresponding lower clamping plate 21. Then, the staff will place the collection tray they are carrying under all the display screen units lifted by the suction cup 44. The staff will then control all the micro-electric telescopic rods 45 to be inserted downwards into the through hole structure 2203 of the upper clamping plate 22, so that the display screen units will lose the suction force from the suction cup 44 and fall naturally into the collection tray carried by the staff, thus completing the collection of the display screen units.

[0033] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A laser cutting equipment for manufacturing and processing displays, comprising a worktable (11) and a laser cutting machine (12); the laser cutting machine (12) is installed on the worktable (11). Its features are, It also includes an electrically controlled movable carrier plate (13), a lower clamping plate (21), an upper clamping plate (22), an electromagnet (23), an infusion tube (31), a waste tube (32), and a lifting mechanism; the electrically controlled movable carrier plate (13) is slidably connected to the worktable (11); several lower clamping plates (21) are fixed in a matrix on the electrically controlled movable carrier plate (13); the upper clamping plate (22) is placed on the lower clamping plate (21); the worktable (11) is connected to a lifting mechanism that drives the upper clamping plate (22) to move up and down. Mechanism; an electromagnet (23) is installed on the lower clamping plate (21); the upper clamping plate (22) is a composite plate structure made of an upper steel sheet layer and a lower copper sheet layer pressed together; an infusion pipe (31) and a waste liquid pipe (32) are fixedly connected to the electrically controlled moving carrier plate (13); a water-cooled guide channel structure is provided in the lower clamping plate (21), and the inlet end of the water-cooled guide channel structure of the lower clamping plate (21) is connected to the infusion pipe (31), and the outlet end of the water-cooled guide channel structure of the lower clamping plate (21) is connected to the waste liquid pipe (32). The lifting mechanism consists of a lifting plate (41), an electric lifting machine (42), an air extraction pipe (43), and a suction cup (44); the lifting plate (41) is slidably connected to the workbench (11); the electric lifting machine (42) is installed on the workbench (11); the telescopic end of the electric lifting machine (42) is fixedly connected to the lifting plate (41); the lifting plate (41) is provided with an air extraction pipe (43); the bottom of the lifting plate (41) is provided with suction cups (44) that correspond in number and position to the upper clamping plate (22), and the suction cups (44) are connected to the air extraction pipe (43); The upper clamping plate (22) is provided with a sinking structure (2202) adapted to the structure of the suction cup (44).

2. The laser cutting equipment for display screen manufacturing and processing according to claim 1, characterized in that, The lower clamp (21) is made of thermally conductive copper plate material.

3. The laser cutting equipment for display screen manufacturing and processing according to claim 1, characterized in that, The upper clamping plate (22) has a heat dissipation groove structure (2201).

4. The laser cutting equipment for display screen manufacturing and processing according to claim 1, characterized in that, A magnetic plate (24) is fixedly attached to the lower clamp (21) and closely attached to the electromagnet (23).

5. The laser cutting equipment for display screen manufacturing and processing according to claim 1, characterized in that, The electrically controlled moving carrier plate (13) has a grid groove structure (1301) that surrounds all the lower clamping plates (21).

6. The laser cutting equipment for display screen manufacturing and processing according to claim 5, characterized in that, The rear side of the electrically controlled mobile carrier (13) is fixedly connected to the outflow pipe (33) that connects to the grid groove structure (1301); the outflow pipe (33) is connected to the infusion pipe (31); the front side of the electrically controlled mobile carrier (13) is fixedly connected to the inflow pipe (34) that connects to the grid groove structure (1301); the inflow pipe (34) is connected to the waste liquid pipe (32).

7. The laser cutting equipment for display screen manufacturing and processing according to claim 6, characterized in that, Defoamer is added to the cooling water used.

8. The laser cutting equipment for display screen manufacturing and processing according to claim 1, characterized in that, A miniature electronically controlled telescopic rod (45) is installed inside the suction cup (44); a through hole structure (2203) is provided in the sinkhole structure (2202) of the upper clamping plate (22) to be aligned with the miniature electronically controlled telescopic rod (45).

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