A laser cutting device and a cutting method for processing a full-screen

Abstract

This invention belongs to the field of laser cutting technology, specifically relating to a laser cutting device and a cutting method for full-screen processing. The device includes a support column, a turntable rotatably connected to the outer ring of the support column, a laser generator mounted on the upper end of the turntable, first conveyor belts on the left and rear sides of the turntable, and second conveyor belts at the ends of the first conveyor belts; a screen substrate; a driving unit including a toothed ring; a lifting unit including a lifting frame connected to a lifting rod positioned above the second conveyor belts; and a fixing unit including an air pump connected to an electrically controlled valve, which in turn is connected to a negative pressure nozzle. This invention enables automatic loading and unloading of the screen substrate, as well as automatic fixing and unfixing during the loading and unloading process, ensuring stability during loading, unloading, and processing. It also enables multi-station processing during screen cutting, ensuring processing efficiency.

Description

Technical Field

[0001] This invention belongs to the field of laser cutting technology, specifically relating to a laser cutting device and a cutting method for full-screen processing. Background Technology

[0002] As smartphones, tablets, and wearable devices evolve towards a "full-screen" design, screen ratios are constantly increasing and bezels are continuously narrowing, placing unprecedented precision demands on screen cutting and processing technologies. The irregular cutting of full-screen displays requires micron-level cutting precision and smooth edges free of microcracks. Laser cutting, due to its advantages of being non-contact, having a small heat-affected zone, and offering high cutting precision, has become the mainstream process for full-screen manufacturing. However, some shortcomings still exist in the actual production process of laser cutting.

[0003] Firstly, in a screen laser cutting production line, loading and unloading refers to the process of sending the screen substrate to be cut into the cutting station and removing the cut product. However, existing technologies make the loading and unloading process too cumbersome, unable to achieve fast and stable automatic loading and unloading and screen fixation. Furthermore, the loading and unloading process is greatly affected by factors such as operator skill level, fatigue, and concentration, resulting in significant fluctuations. This instability makes it difficult for the cutting process to achieve precise coordination with preceding and following processes.

[0004] Secondly, during laser cutting of screens, the relative positional accuracy between the cutting head and the screen needs to be maintained at the micrometer level. Any minute vibration, displacement, or deformation will directly affect the cutting quality and product yield, and the interaction between the laser and the material will generate localized high temperatures. If the screen is not securely fixed, the heat from the cutting area cannot be effectively conducted through the worktable, which may lead to the expansion of the heat-affected zone and the generation of thermal stress within the material. Although existing technologies can fix the screen during cutting, the fixing procedure is too cumbersome, requiring separate fixing after loading before transferring it to the processing station, which affects production efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a laser cutting device and a cutting method for full-screen processing, which can realize automatic loading and unloading of screen substrates, as well as automatic fixing and unfixing during the loading and unloading process, ensuring stability in loading, unloading and processing operations, and also realize multi-station processing during screen cutting to ensure processing efficiency.

[0006] The specific technical solution adopted by this invention is as follows: A laser cutting device, comprising: The support column is rotatably connected to a turntable on its outer ring. A laser generator is installed at the upper end of the turntable. A first conveyor belt is installed on the left and rear sides of the turntable, and a second conveyor belt is installed at the end of each of the first conveyor belts. The screen base is positioned above the turntable and the two sets of conveyor belts; The drive unit includes a gear ring, which is fixedly mounted on the lower end of the turntable. The lifting unit includes a lifting frame, which is located at the lower end of the inner ring of the turntable. A lifting rod is fixedly connected to one end of the lifting frame facing the outside of the turntable, and the lifting rod is located above the second conveyor belt. The fixing part includes an air pump, which is installed above the turntable. An electric control valve is connected to the outlet of the air pump, and a negative pressure nozzle is connected to the outlet of the electric control valve. The negative pressure nozzle is fixedly installed on the upper end of the lifting frame. When the screen substrate moves onto the second conveyor belt, the lifting frame and lifting rod rise and pass through the second conveyor belt, driving the negative pressure nozzle to contact and adsorb the screen substrate. The gear ring drives the turntable to rotate around the support column, and the control screen base is sent to different workstations.

[0007] In a preferred embodiment, a turntable is rotatably connected to the outer ring of the middle section of the support column, a robotic arm is fixedly installed at the upper end of the support column, and a laser generator is fixedly installed at the operating end of the robotic arm.

[0008] In a preferred embodiment, four sets of grooves are evenly distributed on the outer ring of the turntable, and the four sets of grooves are located on the four sides of the turntable. A first conveyor belt is provided on the left and rear sides of the turntable. A second conveyor belt is provided at the end of each of the two sets of first conveyor belts near the turntable. The two sets of second conveyor belts are located below the grooves on the outer ring of the turntable, and the conveying parts of the two sets of second conveyor belts are arranged opposite to the conveying parts of the first conveyor belts.

[0009] In a preferred embodiment, waste bins are placed on the right side and below the front side of the turntable.

[0010] In a preferred embodiment, a gear ring is fixedly installed on the lower inner ring of the turntable, and a cavity is opened in the area below the gear ring inside the support column. A motor is fixedly installed in the cavity, and a gear is fixedly connected to the output shaft of the motor. The outer ring of the gear passes through and extends out of the support column and meshes with the inner ring of the gear ring.

[0011] In a preferred embodiment, a square groove is formed inside the groove of the outer ring of the turntable, and two sets of guide rods are fixedly installed in the middle of the square groove. The outer ring of the two sets of guide rods is slidably connected to a lifting frame, and the upper end of the lifting frame is slidably connected in the square groove. Two sets of lifting rods are fixedly connected to the area of ​​the lifting frame facing the outside of the turntable, and both sets of lifting rods are movably sleeved in the gap of the second conveyor belt.

[0012] In a preferred embodiment, mounting brackets are fixedly installed on both sides of the lower end of the turntable, with the lower end of the mounting brackets positioned below the lifting frame. An electric actuator is fixedly installed on the lower end of the inner cavity of the mounting bracket, and the output end of the electric actuator is fixedly connected to the middle of the lower end of the lifting frame.

[0013] In a preferred embodiment, a groove is provided at the upper end of the turntable, and an air pump is fixedly installed in the groove. An air pipe is connected to the outlet of the air pump, and the lower end of the air pipe extends into and passes through the turntable.

[0014] In a preferred embodiment, a diverter tube is fixedly connected to the lower inner ring of the turntable, and the lower end of the air pipe passes through the turntable and communicates with the diverter tube. Four sets of electrically controlled valves are fixedly connected to the outer ring of the diverter tube, and each of the outlets of the electrically controlled valves is connected to a spiral tube. The other end of the spiral tube passes through the guide rod and is connected to the lower end of the lifting frame. Multiple sets of negative pressure nozzles are fixedly connected to the upper end of the lifting rod, and the lower end of the negative pressure nozzles is connected to the spiral tube.

[0015] A cutting method for full-screen processing using a laser cutting apparatus, applicable to any of the laser cutting apparatuses described above, comprising: S1: Loading. After the screen substrate moves from the first conveyor belt on the left to the second conveyor belt, the lifting frame and lifting rod rise and pass through the second conveyor belt, so that the negative pressure nozzle contacts the screen substrate. At this time, the air pump runs to generate negative pressure, which is transmitted to the negative pressure nozzle through the electric control valve to stably adsorb the screen substrate. Then the electric control valve cuts off the connection with the air pump to maintain the negative pressure state in the negative pressure nozzle. Immediately afterwards, the lifting rod rises to a height parallel to the turntable. S2: Cutting. The turntable rotates around the support column, moving the screen substrate to the front of the turntable, and then laser cutting is performed. S3: Cooling. After the screen substrate is cut, it is moved to the right side of the turntable to cool and wait for unloading. S4: Unloading. After the cut screen substrate cools down, it moves to the rear of the turntable as the turntable rotates. At this time, the lifting frame and lifting rod descend, causing the screen substrate to descend synchronously. Then, the electric control valve operates to release the negative pressure in the negative pressure nozzle. Subsequently, the cut screen contacts and is placed on the second conveyor belt on the rear of the turntable for discharge, completing the cutting operation.

[0016] The technical effects achieved by this invention are as follows: The lifting unit and the second conveyor belt of the present invention can realize automatic loading and unloading of screen substrates, improving production efficiency and stability. In use, the first conveyor belt on the left side of the turntable transports the screen substrate to the second conveyor belt. Then the lifting frame and the lifting rod rise and pass through the second conveyor belt. The rising lifting rod will drive the negative pressure nozzle to contact the screen substrate and lift it to the top of the turntable. When unloading, simply drive the lifting rod down and pass through the second conveyor belt to place the screen substrate on the second conveyor belt to complete the unloading. The fixing part of the present invention can automatically fix and release the screen substrate during the loading and unloading process, ensuring stability during loading, unloading and processing operations; when the negative pressure nozzle contacts the screen substrate, the air pump operates to create a negative pressure inside the negative pressure nozzle through the electronic control valve and adsorb the screen substrate for fixation. Subsequently, the electronic control valve cuts off the connection between the negative pressure nozzle and the air pump, keeping the negative pressure inside the negative pressure nozzle in a negative pressure state. When unloading is required, the electronic control valve can automatically release the pressure, releasing the negative pressure state inside the negative pressure nozzle and releasing the screen substrate from the fixed state. The drive unit and turntable of the present invention can realize multi-station processing during screen cutting, ensuring processing efficiency. When in use, after the screen base moves above the turntable, the screen base is moved to four different stations for processing as the turntable rotates. During the screen processing, the other stations will also continue to perform their preset work, ensuring processing efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a right-side view of the overall structure of this invention; Figure 3 This is a schematic diagram showing the position of the lifting rod in this invention; Figure 4 This is a schematic diagram showing the positions of the lifting rod and the second conveyor belt in this invention; Figure 5 This is a schematic diagram showing the position of the driving unit in this invention; Figure 6 This is a cross-sectional schematic diagram of the drive unit in this invention; Figure 7 This is a schematic diagram of the lifting part in this invention; Figure 8 This is a schematic diagram showing the position of the fixing part in this invention; Figure 9 This is a schematic diagram of the fixing part in this invention; Figure 10 This is a cross-sectional schematic diagram of the turntable in this invention.

[0018] The attached diagram lists the components represented by each number as follows: 10. Support column; 11. Turntable; 12. Robotic arm; 13. Laser generator; 14. First conveyor belt; 15. Second conveyor belt; 16. Waste bin; 20. Screen base; 30. Drive unit; 31. Gear ring; 32. Motor; 33. Gear; 40. Lifting unit; 41. Guide rod; 42. Lifting frame; 43. Lifting rod; 44. Mounting frame; 45. Electric actuator; 50. Fixing unit; 51. Air pump; 52. Air pipe; 53. Diverter pipe; 54. Electric control valve; 55. Spiral tube; 56. Negative pressure nozzle. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" appearing in different places throughout this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that mutually excludes other embodiments.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth. Example

[0023] Please see the appendix Figures 1 to 5 , Figures 7 to 9 As shown, this is the first embodiment of the present invention, which provides a laser cutting device, including: The support column 10 is rotatably connected to the outer ring of the support column 10. A laser generator 13 is provided at the upper end of the turntable 11. A first conveyor belt 14 is provided on the left and rear sides of the turntable 11, and a second conveyor belt 15 is provided at the end of each of the first conveyor belts 14. Screen base 20 is positioned above turntable 11 and two sets of conveyor belts; The drive unit 30 includes a gear ring 31, which is fixedly installed at the lower end of the turntable 11. The lifting unit 40 includes a lifting frame 42, which is located at the lower end of the inner ring of the turntable 11. A lifting rod 43 is fixedly connected to one end of the lifting frame 42 facing the outside of the turntable 11. The lifting rod 43 is located above the second conveyor belt 15. The fixing part 50 includes an air pump 51, which is installed above the turntable 11. An electric control valve 54 is connected to the outlet of the air pump 51, and a negative pressure nozzle 56 is connected to the outlet of the electric control valve 54. The negative pressure nozzle 56 is fixedly installed on the upper end of the lifting frame 42. When the screen substrate 20 moves onto the second conveyor belt 15, the lifting frame 42 and the lifting rod 43 rise and pass through the second conveyor belt 15, driving the negative pressure nozzle 56 to contact and adsorb the screen substrate 20. The gear ring 31 drives the turntable 11 to rotate around the support column 10, and the control screen base 20 is sent to different workstations.

[0024] It should be noted that, in order to ensure the stable use and operation of the device, electrical control components and drive components should be installed inside the support column 10 and the turntable 11, and connected to the mains power to ensure that all electrical components in the device can operate stably.

[0025] In this embodiment, during use, the first conveyor belt 14 on the left side of the turntable 11 transports the screen substrate 20 onto the second conveyor belt 15. Then, the lifting frame 42 and lifting rod 43 rise and pass through the second conveyor belt 15, causing the negative pressure nozzle 56 to contact the screen substrate 20. At this time, the air pump 51 operates, creating a negative pressure inside the negative pressure nozzle 56 via the electronically controlled valve 54, which then adsorbs and fixes the screen substrate 20. Subsequently, the electronically controlled valve 54 cuts off the connection between the negative pressure nozzle 56 and the air pump 51, maintaining a negative pressure state inside the negative pressure nozzle 56. Then, the lifting frame 42 continues to rise, moving the screen substrate 20 to the turntable. Above the turntable 11, the turntable 11 rotates around the support column 10, causing the screen base 20 to move to the front position of the turntable 11 for cutting. After completion, it moves to the right position for static cooling. After cooling, it moves to the rear position of the turntable 11. At this time, the lifting rod 43 descends, and the electric control valve 54 releases the negative pressure in the negative pressure nozzle 56, causing the screen base 20 to be released from the fixed state. Then, the lifting rod 43 passes through the second conveyor belt 15 on the rear side of the turntable 11, and the cut screen is placed on the second conveyor belt 15 on the rear side for discharge.

[0026] Secondly, please refer to again Figures 1 to 4 The outer ring of the middle section of the support column 10 is rotatably connected to the turntable 11 via ball bearings. The upper end of the support column 10 is fixedly installed with a robotic arm 12, and the operating end of the robotic arm 12 is fixedly installed with a laser generator 13. The outer ring of the turntable 11 is evenly provided with four sets of grooves, and the four sets of grooves are located on the four sides of the turntable 11. The left and rear sides of the turntable 11 are provided with first conveyor belts 14. The two sets of first conveyor belts 14 are provided with second conveyor belts 15 at the end near the turntable 11. The two sets of second conveyor belts 15 are located below the grooves on the outer ring of the turntable 11. At the same time, the two sets of second conveyor belts 15 are arranged opposite to the conveying parts of the first conveyor belts 14. Waste bins 16 are placed on the right side and the lower front side of turntable 11.

[0027] It should be noted that the laser generator 13 is a device used for screen laser cutting in the prior art, and will not be described in detail here; Both the upper and lower sides of the contact area between the support column 10 and the turntable 11 are provided with limiting rings with a diameter larger than that of the support column 10, which are intended to ensure the stability of the rotation of the turntable 11 and restrict the turntable 11 to only rotate. The second conveyor belt 15 consists of three sets of tracks, which are connected by a drive shaft. The three sets of tracks have a gap on the side near the turntable 11, and the width of the gap should be greater than the width of the lifting rod 43. The robotic arm 12 has a four-axis structure and should be equipped with a telescopic rod inside to ensure the stability and comprehensiveness of laser cutting; The waste bin 16 has a door hinged to its exterior for easy cleaning of the interior.

[0028] In this embodiment, the robotic arm 12 can drive the laser generator 13 to move flexibly, achieving precise cutting of the screen substrate 20 at different positions and along different paths. The four sets of grooves on the outer ring of the turntable 11 provide space for the installation and operation of the lifting part 40 and the fixing part 50, while also making the overall structural layout more compact. The first conveyor belt 14 on the left side is responsible for smoothly transporting the screen substrate 20 to be cut onto the second conveyor belt 15 at its end. The second conveyor belt 15 is located directly below the groove on the left side of the turntable 11, and its conveying direction is towards the center of the turntable 11, ensuring that the screen substrate 20 can accurately reach the adsorption area of ​​the lifting rod 43. The first conveyor belt 14 on the rear side and the second conveyor belt 15 at its end are used to receive the finished screen after cutting, and their conveying direction is away from the center of the turntable 11, transporting the finished product outwards. The waste bin 16 below the front side of the turntable 11 is used to collect debris and scraps generated during the laser cutting process.

[0029] Secondly, please refer to again Figures 5 to 6 A gear ring 31 is fixedly installed on the lower inner ring of the turntable 11. A cavity is opened in the area below the gear ring 31 inside the support column 10, and a motor 32 is fixedly installed in the cavity. A gear 33 is fixedly connected to the output shaft of the motor 32. The outer ring of the gear 33 passes through and extends out of the support column 10 and meshes with the inner ring of the gear ring 31.

[0030] It should be noted that the support column 10 has a through groove at the position where the gear 33 is installed, and the gear 33 meshes with the inner ring of the gear ring 31 through the through groove.

[0031] In this embodiment, during use, the motor 32 drives the gear 33 to rotate, which in turn drives the gear ring 31 to rotate synchronously, thereby causing the entire turntable 11 to rotate smoothly around the central axis of the support column 10. By precisely controlling its rotation angle and speed, the motor 32 can achieve accurate positioning of the turntable 11, ensuring that the screen substrate 20 can be accurately delivered to various preset workstations, such as the cutting workstation and the cooling workstation.

[0032] Secondly, please refer to again Figures 3 to 4 , Figures 7 to 8 The outer ring of the turntable 11 has a square groove inside, and two sets of guide rods 41 are fixedly installed in the middle of the square groove. The outer ring of the two sets of guide rods 41 is slidably connected to the lifting frame 42, and the upper end of the lifting frame 42 is slidably connected in the square groove. Two sets of lifting rods 43 are fixedly connected to the area of ​​the lifting frame 42 facing the outside of the turntable 11. Both sets of lifting rods 43 are movably sleeved in the gap of the second conveyor belt 15. A mounting bracket 44 is fixedly installed on both sides of the lower end of the turntable 11. The lower end of the mounting bracket 44 is located below the lifting frame 42. An electric push rod 45 is fixedly installed on the lower end of the inner cavity of the mounting bracket 44. The output end of the electric push rod 45 is fixedly connected to the middle of the lower end of the lifting frame 42.

[0033] It should be noted that the width of the lifting rod 43 should be less than the preset gap on the side of the second conveyor belt 15 near the turntable 11, so that the lifting rod 43 can stably pass through the second conveyor belt 15 and contact the screen base 20 placed on its upper end. A contact-type power supply device (such as an electric slip ring) should be installed between the turntable 11 and the support column 10 to provide power to the equipment at the upper end of the turntable 11 and ensure the stable operation of the device. All electrical components on turntable 11 should have built-in Internet of Things (IoT) operation modules for intelligent control, ensuring stable operation of the equipment. The guide rod 41 cannot contact the second conveyor belt 15 to avoid affecting the rotation of the turntable 11; The length of the guide rod 41 should be greater than the height difference between the turntable 11 and the second conveyor belt 15 so that the lifting frame 42 and the lifting rod 43 can be moved to a position below the second conveyor belt 15 to avoid affecting the rotation of the turntable 11; Here, the four grooves on the outer ring of the turntable 11 are divided into four workstations, starting from the second conveyor belt 15 on the left and ending at the second conveyor belt 15 on the rear, which are the loading section, processing section, cooling section and unloading section in sequence. The processing section and the cooling section are each equipped with a waste bin 16. The laser generator 13 mainly moves in the processing section. When the laser generator 13 is performing screen cutting operations, it should cut off the waste material to prevent the waste material from forming a whole and falling out of the gap of the lifting rod 43. Preferably, in order to ensure that the waste generated from cutting can fall smoothly into the waste bin 16, the upper end of the lifting rod 43 can be set as a semi-circular or semi-elliptical structure (not shown in the figure, and this is a common technical structure in the prior art, so it will not be described in detail here), so that the waste can slide directly off the lifting rod 43, avoiding the accumulation of waste on the lifting rod 43 and affecting subsequent loading and unloading operations.

[0034] In this embodiment, when the screen substrate 20 moves onto the second conveyor belt 15 on the left, the electric push rod 45 pushes the lifting frame 42 to slide upward along the guide rod 41, causing the two sets of lifting rods 43 to rise synchronously. Because its width is smaller than the gap between the tracks of the second conveyor belt 15, it can smoothly pass through the second conveyor belt 15. When the upper end surface of the lifting rod 43 is higher than the conveying plane of the second conveyor belt 15, it will lift the screen substrate 20 placed on the second conveyor belt 15 until the negative pressure nozzle 56 installed at the upper end of the lifting frame 42 is in full contact with the lower surface of the screen substrate 20. At this time, the electric push rod 45 stops extending, maintaining the current height of the lifting frame 42 and the lifting rod 43, preparing for the subsequent adsorption and fixing action. After the adsorption and fixing is completed, it rises again until the screen substrate 20 is raised above the turntable 11.

[0035] Please refer to it again. Figures 8 to 10 The upper end of the turntable 11 has a groove, and an air pump 51 is fixedly installed in the groove. The outlet of the air pump 51 is connected to an air pipe 52, and the lower end of the air pipe 52 extends into and passes through the turntable 11. A diverter pipe 53 is fixedly connected to the lower inner ring of the turntable 11. The lower end of the air pipe 52 passes through the turntable 11 and is connected to the diverter pipe 53. Four sets of electrically controlled valves 54 are fixedly connected to the outer ring of the diverter pipe 53. The outlet of each electrically controlled valve 54 is connected to a spiral tube 55. The other end of the spiral tube 55 passes through the guide rod 41 and is connected to the lower end of the lifting frame 42. Multiple sets of negative pressure nozzles 56 are fixedly connected to the upper end of the lifting rod 43. The lower end of the negative pressure nozzles 56 is connected to the spiral tube 55.

[0036] It should be noted that the air pump 51 is a bidirectional air pump, designed to be able to both blow and suck air, which facilitates subsequent cleaning of the inside of the device and can also deal with some emergency situations (such as the failure of the negative pressure nozzle 56 to depressurize, and the screen being unable to feed materials normally). The electric control valve 54 is a three-head valve with two inlets connected to the diverter pipe 53 and one set of outlets connected to the spiral pipe 55. The part connected to the spiral pipe 55 should be equipped with a pressure relief valve so that the negative pressure in the spiral pipe 55 can be released during the unloading operation, which will facilitate the unloading operation of the screen. The diversion pipe 53 is provided with four sections, which are respectively located between the four sets of solenoid valves 54. The four diversion pipes 53 and solenoid valves 54 together form a ring structure, so that the four sets of spiral pipes 55 can simultaneously receive the negative pressure generated in the air pump 51. The inner cavity of the spiral tube 55 is provided with reinforcing ribs to prevent the inner wall from collapsing when a negative pressure is formed inside the spiral tube 55, which would affect the stability of the adsorption of the screen substrate 20. A rubber ring is provided at the upper end of the negative pressure nozzle 56 to ensure sealing and improve the stability of the screen adsorption and fixation. Here, after the negative pressure nozzle 56 adsorbs onto the screen substrate 20, the electric control valve 54 should promptly cut off the connection between the spiral tube 55 and the diverter tube 53, so that the spiral tube 55 and the negative pressure nozzle 56 are kept under negative pressure. When the screen substrate 20 is cut and moves to the unloading section, the pressure relief valve in the electric control valve 54 is opened to release the negative pressure in the spiral tube 55 and the negative pressure nozzle 56, so that when the lifting rod 43 descends and passes through the second conveyor belt 15, the cut screen substrate 20 can be placed above the second conveyor belt 15 on the rear side.

[0037] In this embodiment, when the negative pressure nozzle 56 contacts the screen substrate 20, the air pump 51 starts and delivers negative pressure to the diversion pipe 53 through the air pipe 52. At this time, the electrically controlled valve 54 corresponding to the left loading section opens, allowing the negative pressure in the diversion pipe 53 to be transmitted to the negative pressure nozzle 56 through the spiral tube 55. The rubber ring at the upper end of the negative pressure nozzle 56 is tightly attached to the lower surface of the screen substrate 20, firmly adsorbing the screen substrate 20 under the action of negative pressure. After the adsorption is stable, the electrically controlled valve 54 closes, cutting off the passage between the spiral tube 55 and the diversion pipe 53, so that the negative pressure state in the negative pressure nozzle 56 and the spiral tube 55 can be maintained. At this time, even if the air pump 51 stops working or switches to other workstations for air supply, the currently adsorbed screen substrate 20 can still be stably fixed on the lifting rod 43. When the screen substrate 20 rotates with the turntable 11 to the processing section and cooling section, and finally reaches the rear unloading section, the corresponding electronically controlled valve 54 of the unloading section opens its built-in pressure relief valve, allowing outside air to enter the spiral tube 55 and the negative pressure nozzle 56. The negative pressure is released, and the screen substrate 20 loses its adsorption force, thus allowing it to be placed stably on the rear second conveyor belt 15. If the negative pressure nozzle 56 fails to release pressure, causing the screen to fail to unload normally, the air pump 51 can be switched to blowing mode. Gas is blown into the spiral tube 55 through the air pipe 52, the diverter pipe 53, and the corresponding electronically controlled valve 54, using positive pressure to blow the screen substrate 20 off the negative pressure nozzle 56, ensuring the smooth progress of the unloading process. Example

[0038] A cutting method for full-screen processing using a laser cutting apparatus, applicable to any of the laser cutting apparatuses described above, comprising: S1: Loading. After the screen substrate 20 moves from the first conveyor belt 14 on the left to the second conveyor belt 15, the lifting frame 42 and the lifting rod 43 rise and pass through the second conveyor belt 15, so that the negative pressure nozzle 56 contacts the screen substrate 20. At this time, the air pump 51 runs to generate negative pressure, which is transmitted to the negative pressure nozzle 56 through the electric control valve 54 to stably adsorb the screen substrate 20. Then the electric control valve 54 cuts off the connection with the air pump 51 to maintain the negative pressure state in the negative pressure nozzle 56. Immediately afterwards, the lifting rod 43 rises to a height parallel to the turntable 11. S2: Cutting, the turntable 11 rotates around the support column 10, moving the screen base 20 loaded with material to the position in front of the turntable 11, and then performing laser cutting operation; S3: Cooling. After the screen base 20 is cut, it is moved to the right side of the turntable 11 and left to cool, waiting for the material to be unloaded. S4: Unloading. After the screen substrate 20 is cooled, it moves to the rear position of the turntable 11 as the turntable 11 rotates. At this time, the lifting frame 42 and the lifting rod 43 descend, driving the screen substrate 20 to descend synchronously. At this time, the electric control valve 54 operates to release the negative pressure state in the negative pressure nozzle 56. Then the cut screen contacts and is placed on the second conveyor belt 15 on the rear side of the turntable 11 for discharge, completing the cutting operation.

[0039] In this embodiment, within the gap between S1, S2, S3, and S4, with each rotation of the turntable 11, a new lifting frame 42 is moved to the left side of the turntable 11 below the second conveyor belt 15, which is intended to enable continuous loading, cutting, and unloading operations. By setting up multiple workstations, the processing efficiency is improved.

[0040] The working principle of this invention is as follows: During use, the first conveyor belt 14 on the left side of the turntable 11 transports the screen substrate 20 onto the second conveyor belt 15. Subsequently, the electric push rod 45 pushes the lifting frame 42 to slide upward along the guide rod 41, driving the two sets of lifting rods 43 to rise synchronously and pass through the second conveyor belt 15. When the upper end surface of the lifting rod 43 is higher than the conveying plane of the second conveyor belt 15, it will lift the screen substrate 20 placed on the second conveyor belt 15 until the negative pressure nozzle 56 installed at the upper end of the lifting frame 42 is in full contact with the lower surface of the screen substrate 20. At this time, the air pump 51 starts and delivers negative pressure to the diversion pipe 53 through the air pipe 52. At this time, the electric control valve 54 corresponding to the left loading section opens, allowing the negative pressure in the diversion pipe 53 to be transmitted to the negative pressure nozzle 56 through the spiral tube 55. The rubber ring at the upper end of the negative pressure nozzle 56 is tightly attached to the lower surface of the screen substrate 20, and firmly adsorbs the screen substrate 20 under the action of negative pressure. After the adsorption stabilizes, the electronically controlled valve 54 closes, cutting off the passage between the spiral tube 55 and the diverter tube 53, thus maintaining the negative pressure state in the negative pressure nozzle 56 and the spiral tube 55. Subsequently, the motor 32 drives the gear 33 to rotate, driving the gear ring 31 to rotate synchronously, thereby driving the entire turntable 11 to rotate smoothly around the central axis of the support column 10, so that the screen substrate 20 rotates with the turntable 11 to the front position. At this time, the robotic arm 12 drives the laser generator 13 to move, realizing precise cutting of the screen substrate 20 at different positions and along different paths. The cut waste falls into the waste bin 16 for collection. After the cut screen is placed on the right side of the turntable 11 to cool, it is moved to the rear side of the turntable 11. At this time, the lifting rod 43 descends and passes through the second conveyor belt 15 on the rear side of the turntable 11. At the same time, the electric control valve 54 opens its built-in pressure relief valve, and outside air enters the spiral tube 55 and the negative pressure nozzle 56. The negative pressure is released, and the screen substrate 20 loses its adsorption force, so it can be placed stably on the rear second conveyor belt 15 for discharge, completing the cutting operation.

[0041] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A laser cutting apparatus, characterized by: include: The support column is rotatably connected to a turntable on its outer ring. A laser generator is installed at the upper end of the turntable. A first conveyor belt is installed on the left and rear sides of the turntable, and a second conveyor belt is installed at the end of each of the first conveyor belts. The screen base is positioned above the turntable and the two sets of conveyor belts; The drive unit includes a gear ring, which is fixedly mounted on the lower end of the turntable. The lifting unit includes a lifting frame, which is located at the lower end of the inner ring of the turntable. A lifting rod is fixedly connected to one end of the lifting frame facing the outside of the turntable, and the lifting rod is located above the second conveyor belt. The fixing part includes an air pump, which is installed above the turntable. An electric control valve is connected to the outlet of the air pump, and a negative pressure nozzle is connected to the outlet of the electric control valve. The negative pressure nozzle is fixedly installed on the upper end of the lifting frame. When the screen substrate moves onto the second conveyor belt, the lifting frame and lifting rod rise and pass through the second conveyor belt, driving the negative pressure nozzle to contact and adsorb the screen substrate. The gear ring drives the turntable to rotate around the support column, and the control screen base is sent to different workstations.

2. The laser cutting apparatus of claim 1, wherein: A turntable is rotatably connected to the outer ring of the middle section of the support column, and a robotic arm is fixedly installed at the upper end of the support column. A laser generator is fixedly installed at the operating end of the robotic arm.

3. The laser cutting apparatus of claim 2, wherein: The outer ring of the turntable is evenly provided with four sets of grooves, and the four sets of grooves are located on the four sides of the turntable. The left and rear sides of the turntable are provided with first conveyor belts, and the two sets of first conveyor belts are provided with second conveyor belts at the ends of the turntables. The two sets of second conveyor belts are located below the grooves on the outer ring of the turntable, and the conveying parts of the two sets of second conveyor belts are opposite to those of the first conveyor belts.

4. The laser cutting apparatus according to claim 3, characterized in that: Waste bins are placed on the right side and below the front of the turntable.

5. The laser cutting apparatus according to claim 4, characterized in that: A gear ring is fixedly installed on the lower inner ring of the turntable. A cavity is opened in the area below the gear ring inside the support column, and a motor is fixedly installed in the cavity. A gear is fixedly connected to the output shaft of the motor. The outer ring of the gear passes through and extends out of the support column and meshes with the inner ring of the gear ring.

6. The laser cutting apparatus according to claim 5, characterized in that: The outer ring of the turntable has a square groove inside, and two sets of guide rods are fixedly installed in the middle of the square groove. The outer ring of the two sets of guide rods is slidably connected to a lifting frame, and the upper end of the lifting frame is slidably connected in the square groove. Two sets of lifting rods are fixedly connected to the area of ​​the lifting frame facing the outside of the turntable. Both sets of lifting rods are movably sleeved in the gap of the second conveyor belt.

7. The laser cutting apparatus according to claim 6, characterized in that: Mounting brackets are fixedly installed on both sides of the lower end of the turntable. The lower end of the mounting bracket is located below the lifting frame. An electric push rod is fixedly installed on the lower end of the inner cavity of the mounting bracket. The output end of the electric push rod is fixedly connected to the middle of the lower end of the lifting frame.

8. The laser cutting apparatus according to claim 7, characterized in that: The upper end of the turntable has a groove, in which an air pump is fixedly installed. The outlet of the air pump is connected to an air pipe, and the lower end of the air pipe extends into and passes through the turntable.

9. The laser cutting apparatus according to claim 8, characterized in that: A diverter tube is fixedly connected to the lower inner ring of the turntable. The lower end of the air pipe passes through the turntable and connects to the diverter tube. Four sets of electrically controlled valves are fixedly connected to the outer ring of the diverter tube, and each of the outlets of the electrically controlled valves is connected to a spiral tube. The other end of the spiral tube passes through the guide rod and connects to the lower end of the lifting frame. Multiple sets of negative pressure nozzles are fixedly connected to the upper end of the lifting rod, and the lower end of the negative pressure nozzles is connected to the spiral tube.

10. A laser cutting device for cutting full-screen displays, characterized in that: The laser cutting apparatus applicable to any one of claims 1 to 9 comprises: S1: Loading. After the screen substrate moves from the first conveyor belt on the left to the second conveyor belt, the lifting frame and lifting rod rise and pass through the second conveyor belt, so that the negative pressure nozzle contacts the screen substrate. At this time, the air pump runs to generate negative pressure, which is transmitted to the negative pressure nozzle through the electric control valve to stably adsorb the screen substrate. Then the electric control valve cuts off the connection with the air pump to maintain the negative pressure state in the negative pressure nozzle. Immediately afterwards, the lifting rod rises to a height parallel to the turntable. S2: Cutting. The turntable rotates around the support column, moving the screen substrate to the front of the turntable, and then laser cutting is performed. S3: Cooling. After the screen substrate is cut, it is moved to the right side of the turntable to cool and wait for unloading. S4: Unloading. After the cut screen substrate cools down, it moves to the rear of the turntable as the turntable rotates. At this time, the lifting frame and lifting rod descend, causing the screen substrate to descend synchronously. Then, the electric control valve operates to release the negative pressure in the negative pressure nozzle. Subsequently, the cut screen contacts and is placed on the second conveyor belt on the rear of the turntable for discharge, completing the cutting operation.

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