Punching and cutting equipment and method for liquid crystal display screen PCB (Printed Circuit Board) processing

Abstract

The invention relates to the technical field of liquid crystal display screen machining, and discloses punching and cutting equipment and method for liquid crystal display screen PCB machining. The punching and cutting equipment comprises a machine body, a mounting frame is mounted on one side of the top of the machine body, a connecting frame is mounted outside the mounting frame, and a movable frame is mounted on the outer side of the connecting frame; a double-shaft motor is installed on one side of the movable frame, a driving disc is fixedly connected to one output end of the double-shaft motor, a swing rod is rotationally connected to the eccentric position of the outer portion of the driving disc, an air cylinder is fixedly connected to the top of the movable frame, and the outer surface of the air cylinder sequentially communicates with an air inlet pipe and a connecting pipe. Smoke dust and sweeps are ingeniously absorbed by applying the Bernoulli principle, the generated smoke dust and sweeps are absorbed in real time in the punching and cutting process, cleanliness of a working area can be maintained, a healthier and safer working environment is provided for operators, and health problems and potential safety hazards possibly caused by smoke dust suction or sweeps accumulation are reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal display screen processing, and specifically to a punching and cutting device and method for liquid crystal display screen PCB processing. Background Art

[0002] In the field of electronic manufacturing, the printed circuit board (PCB) of a liquid crystal display screen, as a key technical component, its processing accuracy and efficiency have attracted much attention. The PCB of a liquid crystal display screen is the circuit carrier that constitutes the liquid crystal display screen, carrying various electronic components and circuits, and realizing functions such as signal transmission, processing, and control, which plays a decisive role in the performance and quality of the liquid crystal display screen.

[0003] At present, there are many deficiencies in the punching and cutting devices and methods for liquid crystal display screen PCB processing. During the operation of traditional punching and cutting devices, a large amount of soot and waste chips are often generated due to operations such as high-speed rotating cutters or laser cutting. These soot and waste chips fill the working area. On the one hand, it seriously endangers the health of operators, and long-term inhalation may lead to health problems such as respiratory diseases; on the other hand, the accumulation of waste chips is likely to cause equipment failures, increasing safety hazards, reducing work efficiency, and additionally increasing the cost of purchasing special soot and waste chip treatment equipment, which increases the economic burden on enterprises.

[0004] In terms of clamping the PCB of a liquid crystal display screen, the existing devices lack flexibility. With the continuous update and replacement of electronic products, the models of PCBs for liquid crystal display screens are becoming increasingly diverse. Traditional devices mostly design fixtures for specific models. When replacing PCBs of different models for liquid crystal display screens, it takes a lot of time and manpower to readjust the fixtures, reducing production efficiency and increasing equipment adjustment time and labor costs. At the same time, if the clamping is not stable, it will also lead to an increase in processing errors during punching and cutting operations, and the product rejection rate remains high, seriously affecting product quality and stability, and it is difficult to meet the current high-precision, high-efficiency, and low-energy-consuming electronic manufacturing requirements.

[0005] Based on this, those skilled in the art have proposed a punching and cutting device for liquid crystal display screen PCB processing to solve the above problems. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the present invention provides a punching and cutting device and method for liquid crystal display screen PCB processing, which solves the problems raised in the above background art.

[0007] To achieve the above object, the present invention is realized through the following technical solutions: A punching and cutting device for liquid crystal display PCB processing, including a machine body, on one side of the top of the machine body, there is an installation frame installed, on the outside of the installation frame, there is a connection frame installed, on the outside of the connection frame, there is a movable frame installed, on one side of the movable frame, there is a dual-axis motor installed, one of the output ends of the dual-axis motor is fixedly connected with a driving disc, at an eccentric position outside the driving disc, there is a swing rod rotatably connected, on the top of the movable frame, there is an air cylinder fixedly connected, on the outer surface of the air cylinder, there are an air inlet pipe and a connection pipe connected in sequence, inside the air cylinder, there is an installation cavity opened, inside the installation cavity, there is a rubber piston slidably connected, on the outside of the rubber piston, there is a movable rod fixedly connected, on the outside of the connection pipe, there is a transport pipe one connected, on the outer surface of the transport pipe one, there are a plurality of dust suction pipes connected, and on the outside of the movable frame, there is a collection box installed.

[0008] Preferably, on the top of the machine body, there are a plurality of fixed shells installed, inside the fixed shells, there are driving racks slidably connected, inside the fixed shells, there are a plurality of driving gears rotatably connected through bearings, on the outside of the driving gears, there are second driving rods fixedly connected, on the outside of the fixed shells, there is a first driving rod rotatably connected, at one end of the first driving rod, there is a clamping plate rotatably connected, and on the outside of the fixed shells, there is an electric telescopic rod installed.

[0009] Preferably, on the outside of both of the driving gears, they are meshed and connected with the outside of the driving rack, and at one end of the first driving rod, it is rotatably connected with the outside of the clamping plate.

[0010] Preferably, inside both the connection pipe and the air inlet pipe, there are one-way valves installed, and the conduction directions of the two one-way valves are opposite.

[0011] Preferably, the cross-sectional area of the air cylinder is larger than the cross-sectional area of the transport pipe one, and the end of the movable rod away from the rubber piston penetrates through the outside of the air cylinder and is rotatably connected with one end of the swing rod.

[0012] Preferably, the bottom output end of the dual-axis motor is fixedly connected with a drill rod, and on the outside of the movable frame, there is a laser cutting gun installed.

[0013] Preferably, the output end of the electric telescopic rod is fixedly connected with one end of the driving rack, and inside the clamping plate, there is a rubber pad provided.

[0014] The usage method of the punching and cutting device for liquid crystal display PCB processing includes the following steps: Place the four end parts of the liquid crystal display PCB on the upper side of the bottom clamping plate. At this time, start the electric telescopic rod to drive the driving rack to move. While the driving rack is moving, drive multiple driving gears to rotate, thus driving one end of the second driving rod to swing. Under the traction of the first driving rod, drive the two clamping plates to approach each other until the end part of the liquid crystal display PCB is clamped and fixed. By starting the biaxial motor, the rotation of the output end of the biaxial motor drives the drill rod to rotate. In cooperation with the electric guide rail and electric slider installed outside the connecting frame, the drill rod is moved in the three-dimensional directions of X, Y, and Z to realize the punching of the liquid crystal display PCB. At the same time, the liquid crystal display PCB is cut by the laser cutting gun. During the punching or cutting process of the liquid crystal display PCB, waste chips and dust will be generated. At this time, start the other output end of the biaxial motor. During the rotation of this output end, drive the driving disc to rotate. Under the transmission of the movable rod, make the rubber piston move left and right along the inner wall of the installation cavity. In this way, the air pressure inside the installation cavity changes, and the waste chips and dust are sucked into the inside of the transport pipe 1 through the dust suction pipe by using Bernoulli's principle, and finally collected in the collection box.

[0015] The present invention provides a punching and cutting device and method for processing liquid crystal display PCBs. It has the following beneficial effects: 1. The present invention cleverly realizes the absorption of dust and waste chips by applying Bernoulli's principle, absorbs the generated dust and waste chips in real time during the punching and cutting process, can maintain the cleanliness of the working area, provides a healthier and safer working environment for operators, reduces the health problems and safety hazards that may be caused by dust inhalation or waste chip accumulation, helps to improve work efficiency, and at the same time does not need to purchase additional special dust and waste chip treatment equipment, greatly saving the enterprise's equipment procurement cost and effectively reducing the initial investment and subsequent maintenance cost.

[0016] 2. The present invention effectively clamps liquid crystal display PCBs of different models through the clamping component, avoids the cumbersome procedures of readjusting the equipment due to model change, greatly improves the production efficiency, reduces the equipment adjustment time and labor cost. At the same time, it provides stable support and precise positioning for the punching and cutting operation, ensures the high precision of the processing process, effectively reduces the processing error and product rejection rate caused by unstable clamping, and thus improves the quality and stability of the product. Description of the Drawings

[0017] Figure 1 Is a perspective view of the present invention; Figure 2 Is a schematic structural diagram of the mounting frame of the present invention; Figure 3 Is a schematic structural diagram of the transport pipe 1 of the present invention; Figure 4 Schematic diagram of the connection frame structure of the present invention; Figure 5 Schematic diagram of the internal structure of the air cylinder of the present invention; Figure 6 Schematic diagram of the clamping plate structure of the present invention; Figure 7 Schematic diagram of the first driving rod structure of the present invention; Among them, 1, body; 2, fixed shell; 3, mounting bracket; 4, mounting cavity; 5, connection frame; 6, movable frame; 7, air cylinder; 8, first transport pipe; 9, movable rod; 10, driving disc; 11, swing rod; 12, dust suction pipe; 13, drill rod; 14, collection box; 15, laser cutting gun; 16, intake pipe; 17, connection pipe; 18, rubber piston; 19, clamping plate; 20, first driving rod; 21, second driving rod; 22, electric telescopic rod; 23, driving rack; 24, driving gear. Specific embodiments

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0019] Please refer to the attached Figure 1 - attached Figure 7 The present invention provides a punching and cutting device for LCD display PCB processing, including a body 1. A mounting bracket 3 is installed on one side of the top of the body 1. A connection frame 5 is installed outside the mounting bracket 3. A movable frame 6 is installed outside the connection frame 5. A dual-axis motor is installed on one side of the movable frame 6. One of the output ends of the dual-axis motor is fixedly connected to a driving disc 10. A swing rod 11 is rotatably connected to an eccentric position outside the driving disc 10. A gas cylinder 7 is fixedly connected to the top of the movable frame 6. An intake pipe 16 and a connection pipe 17 are sequentially communicated with the outer surface of the gas cylinder 7. An installation cavity 4 is opened inside the gas cylinder 7. A rubber piston 18 is slidably connected to the inner side of the installation cavity 4. A movable rod 9 is fixedly connected to the outside of the rubber piston 18. A first transport pipe 8 is communicated with the outside of the connection pipe 17. A plurality of dust suction pipes 12 are communicated with the outer surface of the first transport pipe 8. A collection box 14 is installed outside the movable frame 6. Check valves are installed inside both the connection pipe 17 and the intake pipe 16, and the conduction directions of the two check valves are opposite. The cross-sectional area of the gas cylinder 7 is larger than the cross-sectional area of the first transport pipe 8. The end of the movable rod 9 away from the rubber piston 18 penetrates the outside of the gas cylinder 7 and is rotatably connected to one end of the swing rod 11.

[0020] Specifically, the body 1 serves as the bearing foundation of the entire device, providing an installation platform and support for other components, ensuring the overall stability and rigidity of the device, and guaranteeing the smooth progress of the processing process. The mounting bracket 3 is used to fix and support the connecting bracket 5, ensuring the installation accuracy and stability of the connecting bracket 5 and providing a foundation for the installation of subsequent components. One output end of the dual-axis motor drives the rubber piston 18 to reciprocate through the drive disk 10, the swing rod 11, and the movable rod 9, generating air flow changes to achieve the collection of waste chips and dust. The other output end directly drives the drill rod 13 to perform drilling operations, providing power for the drilling and cutting function of the device. An installation cavity 4 is provided inside the air cylinder 7, providing a sealed space for the reciprocating movement of the rubber piston 18. Its cross-sectional area is larger than that of the first transport pipe 8, forming a cross-sectional area difference, which is one of the key structures for generating the Bernoulli effect, ensuring that effective suction can be formed during the gas flow. The installation cavity 4 provides space for the compression and expansion of the gas, enabling the gas to change in volume and pressure therein, thereby driving the gas flow and achieving the function of collecting waste chips and dust. The rubber piston 18 is used to change the volume of the gas in the installation cavity 4, thereby generating a pressure change to drive the gas flow. The connecting pipe 17 transports the compressed gas in the installation cavity 4 to the first transport pipe 8, enabling the gas to flow smoothly to the dust suction pipe 12 to achieve the collection of waste chips and dust. A one-way valve is installed inside to ensure that the gas can only flow from the air cylinder 7 to the first transport pipe 8, preventing gas backflow from causing system failure. A plurality of dust suction pipes 12 are connected to the outer surface of the first transport pipe 8, directly aiming at the drilling and cutting operation area, using the suction force generated by the Bernoulli effect to collect waste chips and dust, guiding them into the first transport pipe 8, and finally achieving the effective collection and treatment of waste chips and dust, protecting the cleanliness and safety of the operating environment. The collection box 14 is used to centrally collect the waste chips and dust entering from the dust suction pipes 12, realizing the unified treatment of waste materials, facilitating subsequent cleaning and maintenance work, and reducing the pollution of waste chips to the environment and the impact on the device.

[0021] During the process of punching or cutting the PCB of the liquid crystal display screen, a large amount of waste chips and smoke and dust will be generated. At this time, start the other output end of the dual-axis motor, and the rotation of this output end drives the driving disk 10 to rotate continuously. As the driving disk 10 rotates, one end of the swing rod 11 makes a circular motion, thereby driving the movable rod 9 rotatably connected thereto to reciprocate. Under the reciprocating movement of the movable rod 9, the rubber piston 18 reciprocates left and right along the inner wall of the installation cavity 4. When the rubber piston 18 moves in the direction of the movable rod 9, the volume of the gas in the installation cavity 4 increases and the air pressure decreases. At this time, the one-way valve inside the air inlet pipe 16 is opened under the action of the pressure difference, and the external air enters the installation cavity 4 through the air inlet pipe 16; while the one-way valve inside the connecting pipe 17 is closed under the action of the air pressure to prevent the gas from flowing back. When the rubber piston 18 moves away from the movable rod 9, the gas in the installation cavity 4 is compressed, the volume decreases, and the air pressure increases. At this time, the one-way valve inside the air inlet pipe 16 is closed to prevent the external air from continuing to enter; while the one-way valve inside the connecting pipe 17 is opened under the action of the pressure difference, and the gas in the installation cavity 4 enters the first transport pipe 8 through the connecting pipe 17. Since the outer surface of the first transport pipe 8 is connected with a plurality of dust suction pipes 12, and the cross-sectional area of the dust suction pipe 12 is much smaller than the cross-sectional area of the air cylinder 7, when the gas enters the first transport pipe 8, under the action of Bernoulli's principle, the flow rate of the gas at the dust suction pipe 12 increases rapidly. According to Bernoulli's principle, the faster the gas flow rate, the smaller its pressure, so that the pressure inside the dust suction pipe 12 is lower than the external atmospheric pressure, and thus a strong suction force is generated at the opening of the dust suction pipe 12. The waste chips and smoke and dust enter the inside of the first transport pipe 8 through the dust suction pipe 12 under the action of the suction force, and are finally centrally collected in the collection box 14, realizing the cleaning of the working area, effectively avoiding the equipment failure that may be caused by the accumulation of waste chips and the harm of smoke and dust to the health of the operators. At the same time, there is no need to purchase special smoke and dust and waste chip treatment equipment additionally, reducing the production cost of the enterprise and improving the work efficiency.

[0022] A plurality of fixed shells 2 are installed on the top of the machine body 1. A driving rack 23 is slidably connected inside the fixed shell 2. A plurality of driving gears 24 are rotatably connected to the inner side of the fixed shell 2 through bearings. A second driving rod 21 is fixedly connected to the outside of the driving gear 24. A first driving rod 20 is rotatably connected to the outside of the fixed shell 2. One end of the first driving rod 20 is rotatably connected to a clamping plate 19. An electric telescopic rod 22 is installed on the outside of the fixed shell 2. The outside of both driving gears 24 is meshed with the outside of the driving rack 23. One end of the first driving rod 20 is rotatably connected to the outside of the clamping plate 19.

[0023] Specifically, the driving rack 23 is connected to the output end of the electric telescopic rod 22. Through the telescopic movement of the electric telescopic rod 22, the driving rack 23 is driven to move stably inside the fixed housing 2. The driving gear 24 rotates evenly and stably under the drive of the driving rack 23, converting the linear motion of the driving rack 23 into rotational motion and transmitting power for subsequent clamping actions. The clamping plate 19 is used to directly contact the liquid crystal display PCB board to achieve clamping and fixing of the PCB board. A rubber pad is provided on the inner side of the clamping plate 19, which can increase the friction force with the PCB board, prevent the PCB board from sliding during the processing, and ensure the stability and reliability of the clamping. The electric telescopic rod 22 drives the driving rack 23 to move through its telescopic movement, thereby starting the operation of the entire clamping mechanism. The precise control of the electric telescopic rod 22 can ensure that the clamping force of the clamping plate 19 is appropriate, neither causing the liquid crystal display PCB board to slide due to too small clamping force nor damaging the liquid crystal display PCB board due to too large clamping force.

[0024] The bottom output end of the dual-axis motor is fixedly connected to the drill rod 13, and a laser cutting gun 15 is installed on the outer side of the movable frame 6.

[0025] Specifically, when performing drilling operations, the drill rod 13 rotates at a high speed under the drive of the dual-axis motor. At the same time, under the coordinated action of the electric guide rail and the electric slider on the outer side of the connecting frame 5, it can move precisely along the X, Y, and Z directions to achieve high-precision drilling operations on the liquid crystal display PCB. This design enables the device to quickly and accurately complete complex drilling tasks, meeting the strict requirements for processing accuracy and efficiency in modern electronic manufacturing. The installation position of the laser cutting gun 15 is on the outer side of the movable frame 6. This layout enables the laser cutting gun 15 to move flexibly under the drive of the movable frame 6 to adapt to the cutting requirements of liquid crystal display PCBs of different sizes and shapes. The laser cutting gun 15 uses a laser beam with a high power density to irradiate the surface of the liquid crystal display PCB, causing the material to quickly melt, vaporize, or ablate, thereby achieving fast and precise cutting.

[0026] The output end of the electric telescopic rod 22 is fixedly connected to one end of the driving rack 23, and a rubber pad is provided on the inner side of the clamping plate 19.

[0027] Specifically, a rubber pad is provided on the inner side of the clamping plate 19, and its main function is to increase the friction force between the clamping plate 19 and the PCB board when clamping the liquid crystal display PCB. The softness and elasticity of the rubber pad can effectively prevent the PCB board from sliding during the processing, and at the same time, it can also avoid damaging the surface of the PCB board due to too large clamping force.

[0028] The usage method of the drilling and cutting equipment for liquid crystal display PCBs includes the following steps: Place the four end parts of the liquid crystal display PCB board accurately on the upper side of the bottom clamping plate 19. At this time, start the electric telescopic rod 22 to drive the driving rack 23 to move stably along the inside of the fixed housing 2. During the movement of the driving rack 23, a plurality of driving gears 24 engaged with it are movably connected through bearings on the inner side of the fixed housing 2 and rotate evenly and stably. Then, one end of the second driving rod 21 swings regularly. Under the traction and transmission of the swinging force of the second driving rod 21, the two clamping plates 19 are driven to approach each other. With the rubber pads on the inner sides of the clamping plates 19, the friction between the clamping plates 19 and the liquid crystal display PCB is increased, preventing the PCB board from sliding during the processing and ensuring the stability and reliability of the clamping until the end part of the liquid crystal display PCB is firmly clamped and fixed, providing a solid and stable support for the subsequent drilling and cutting operations.

[0029] Start the dual-axis motor, and the drill rod 13 fixedly connected to the bottom output end starts to rotate at high speed. At the same time, the electric guide rail and the electric slider installed on the outside of the connecting frame 5 cooperate with each other to enable precise movement control of the drill rod 13 in the X, Y, and Z three-dimensional directions. The operator can preset parameters such as the punching position, hole diameter size, and cutting path through the control system of the equipment. The drill rod 13 accurately positions in the three-dimensional space according to the set parameters to achieve high-precision punching operations on the liquid crystal display PCB. In addition, a laser cutting gun 15 is installed on the outside of the movable frame 6. Under the drive of the dual-axis motor and the coordinated action of the electric guide rail and the electric slider, it can perform rapid and efficient cutting on the PCB board according to the preset cutting trajectory. The high-energy laser beam emitted by the laser cutting gun 15 is focused on the surface of the PCB board, instantly melting and vaporizing the material, thereby achieving precise cutting and ensuring that the cutting edge is neat and smooth, improving the processing quality of the product.

[0030] During the process of punching or cutting the PCB of the liquid crystal display screen, a large amount of waste chips and dust will be generated. At this time, start the other output end of the biaxial motor, and the rotation of this output end drives the driving disk 10 to rotate continuously. As the driving disk 10 rotates, one end of the swing rod 11 makes a circular motion, thereby driving the movable rod 9 rotatably connected thereto to move reciprocally. Under the reciprocating movement of the movable rod 9, the rubber piston 18 moves reciprocally left and right along the inner wall of the installation cavity 4. When the rubber piston 18 moves in the direction of the movable rod 9, the volume of the gas in the installation cavity 4 increases and the air pressure decreases. At this time, the check valve inside the intake pipe 16 is opened under the action of the pressure difference, and the external air enters the installation cavity 4 through the intake pipe 16; while the check valve inside the connecting pipe 17 is closed under the action of the air pressure to prevent the gas from flowing back. When the rubber piston 18 moves away from the movable rod 9, the gas in the installation cavity 4 is compressed, the volume decreases, and the air pressure increases. At this time, the check valve inside the intake pipe 16 is closed to prevent the external air from continuing to enter; while the check valve inside the connecting pipe 17 is opened under the action of the pressure difference, and the gas in the installation cavity 4 enters the first transport pipe 8 through the connecting pipe 17.

[0031] Since a plurality of dust suction pipes 12 are connected to the outer surface of the first transport pipe 8, and the cross-sectional area of the dust suction pipe 12 is much smaller than the cross-sectional area of the air cylinder 7, when the gas enters the first transport pipe 8, under the action of Bernoulli's principle, the flow rate of the gas at the dust suction pipe 12 increases rapidly. According to Bernoulli's principle, the faster the gas flow rate, the smaller its pressure, so that the pressure inside the dust suction pipe 12 is lower than the external atmospheric pressure, and thus a strong suction force is generated at the opening of the dust suction pipe 12. Under the action of the suction force, the waste chips and dust enter the inside of the first transport pipe 8 through the dust suction pipe 12 and are finally centrally collected in the collection box 14, realizing the cleaning of the working area, effectively avoiding the equipment failures that may be caused by the accumulation of waste chips and the harm of dust to the health of the operators. At the same time, there is no need to purchase additional special equipment for dust and waste chip treatment, reducing the production cost of the enterprise and improving the work efficiency.

[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A punching and cutting device for liquid crystal display PCB processing, comprising a machine body (1), characterized in that, On one side of the top of the body (1), a mounting frame (3) is installed. An adapter frame (5) is installed outside the mounting frame (3). A movable frame (6) is installed outside the adapter frame (5). A double-shaft motor is installed on one side of the movable frame (6). One of the output ends of the double-shaft motor is fixedly connected to a driving disc (10). A swing rod (11) is rotatably connected to an eccentric position outside the driving disc (10). A cylinder (7) is fixedly connected to the top of the movable frame (6). An air inlet pipe (16) and an adapter pipe (17) are successively communicated with the outer surface of the cylinder (7). An installation cavity (4) is formed inside the cylinder (7). A rubber piston (18) is slidably connected to the inner side of the installation cavity (4). A movable rod (9) is fixedly connected to the outside of the rubber piston (18). A first transport pipe (8) is communicated with the outside of the adapter pipe (17). A plurality of dust suction pipes (12) are communicated with the outer surface of the first transport pipe (8). A collection box (14) is installed outside the movable frame (6). Check valves are installed inside both the adapter pipe (17) and the air inlet pipe (16), and the conduction directions of the two check valves are opposite; and the cross-sectional area of the dust suction pipe (12) is much smaller than that of the cylinder (7); When the rubber piston 18 moves in the direction of the movable rod 9, the volume of the gas in the installation cavity 4 increases and the air pressure decreases. At this time, the check valve inside the air inlet pipe 16 is opened under the action of the pressure difference, and the external air enters the installation cavity 4 through the air inlet pipe 16; while the check valve inside the adapter pipe 17 is closed under the action of the air pressure to prevent gas backflow; When the gas enters the first transport pipe 8, under the action of Bernoulli's principle, the flow rate of the gas at the dust suction pipe 12 increases rapidly. The faster the gas flow rate, the smaller its pressure, so that the pressure inside the dust suction pipe 12 is lower than the external atmospheric pressure, and then a strong suction force is generated at the opening of the dust suction pipe 12. The waste chips and dust enter the inside of the first transport pipe 8 under the action of the suction force.

2. The punching and cutting device for liquid crystal display PCB processing according to claim 1, wherein, A plurality of fixed shells (2) are installed on the top of the body (1). A driving rack (23) is slidably connected to the inside of the fixed shell (2). A plurality of driving gears (24) are rotatably connected to the inside of the fixed shell (2) through bearings. A second driving rod (21) is fixedly connected to the outside of the driving gear (24). A first driving rod (20) is rotatably connected to the outside of the fixed shell (2). One end of the first driving rod (20) is rotatably connected to a clamping plate (19). An electric telescopic rod (22) is installed on the outside of the fixed shell (2).

3. The punching and cutting device for liquid crystal display PCB processing according to claim 2, characterized in that, The outside of both of the two driving gears (24) is meshed with the outside of the driving rack (23), and one end of the first driving rod (20) is rotatably connected to the outside of the clamping plate (19).

4. The punching and cutting device for liquid crystal display PCB processing according to claim 1, characterized in that, The cross-sectional area of the cylinder (7) is larger than that of the first transport pipe (8). The end of the movable rod (9) far from the rubber piston (18) penetrates the outside of the cylinder (7) and is rotatably connected to one end of the swing rod (11).

5. The punching and cutting device for liquid crystal display PCB processing according to claim 1, characterized in that, The bottom output end of the biaxial motor is fixedly connected to a drill rod (13), and a laser cutting gun (15) is installed on the outer side of the movable frame (6).

6. The punching and cutting device for liquid crystal display PCB processing according to claim 2, characterized in that, The output end of the electric telescopic rod (22) is fixedly connected to one end of the driving rack (23), and a rubber pad is arranged on the inner side of the clamping plate (19).

7. The usage method of a punching and cutting device for liquid crystal display PCB processing, characterized in that, The punching and cutting device for liquid crystal display PCB processing according to any one of claims 1-6 includes the following steps: Place the four end parts of the liquid crystal display PCB on the upper side of the bottom clamping plate (19) respectively. At this time, start the electric telescopic rod (22) to drive the driving rack (23) to move. While the driving rack (23) is moving, drive a plurality of driving gears (24) to rotate, so as to drive one end of the second driving rod (21) to swing. Under the traction of the first driving rod (20), drive the two clamping plates (19) to approach each other until the end part of the liquid crystal display PCB is clamped and fixed; Start the biaxial motor. The start of the output end of the biaxial motor drives the drill rod (13) to rotate. Cooperate with the electric guide rail and electric slider installed on the outer side of the connecting frame (5) to move the drill rod (13) in the three-dimensional directions of X, Y, and Z to realize punching of the liquid crystal display PCB. At the same time, perform cutting treatment on the liquid crystal display PCB through the laser cutting gun (15); During the process of punching or cutting the liquid crystal display PCB, waste chips and smoke and dust will be generated. At this time, start the other output end of the biaxial motor. During the rotation of this output end, drive the driving disc (10) to rotate. Under the transmission of the movable rod (9), make the rubber piston (18) move left and right along the inner wall of the installation cavity (4), so that the air pressure inside the installation cavity (4) changes. Utilize Bernoulli's principle to make the waste chips and smoke and dust enter the inside of the transport pipe 1 (8) through the dust suction pipe (12), and finally be centrally collected in the collection box (14).

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