Laser cutting equipment for wire mesh

Abstract

The invention discloses metal wire mesh laser cutting equipment, and relates to the technical field of metal wire mesh processing devices, the metal wire mesh laser cutting equipment comprises a laser cutting machine, the laser cutting machine comprises a frame body, a movable cutting head is connected to the frame body, the conveying system is connected to the frame body and conveys a metal wire mesh; and the bearing table comprises a working table fixedly connected to the frame body, and a plurality of openings are formed in the working table. The top of the bearing table, the top of the workbench and the top of the tray are provided with triangular net-shaped protrusions, the contact area with a metal wire net is greatly reduced, the situation that the metal wire net is hung or deflected during conveying is avoided, and the cutting stability is guaranteed; during cutting, the tray protrusion is connected with negative electricity, a static environment is formed through electric conduction of the metal wire mesh, after cutting, the tray base plate is connected with positive electricity, a cut piece is adsorbed through static attraction, it is ensured that the cut piece is stably separated from excess materials, and the separation problem caused by micro-melting adhesion or static electricity is effectively avoided.

Description

[0001] This application is a divisional application of the application filed on October 9, 2025, with application number 2025114325581 and invention title "Metal Wire Mesh Laser Cutting Device". Technical Field

[0002] This invention relates to the field of metal wire mesh processing equipment, and more particularly to metal wire mesh laser cutting equipment. Background Technology

[0003] Metal wire mesh, as a high-precision material, is widely used in aerospace and medical device fields. Laser cutting technology is often employed in its processing, and the precision of this process directly affects the quality and performance of the final product. Key aspects of laser-cut metal wire mesh include stable wire mesh feeding, separation of the cut part from the residue, oxidation prevention and cooling of the cutting area, and treatment of metal vapor. In existing technologies, wire mesh feeding is prone to deviation, and separation of the cut part from the residue is susceptible to deviation due to static electricity or micro-melting adhesion. Furthermore, during active stripping of the wire mesh at the end, the stripping force can easily cause the entire wire mesh to skew, leading to positioning accuracy errors and consequently affecting the cutting quality.

[0004] In existing technologies, vacuum suction cups are used for negative pressure adsorption, and the cut parts are immediately peeled off vertically after cutting. In this method, for thin or electrostatically charged metal wire mesh, the peeling may be incomplete due to insufficient adsorption force, or the metal wire mesh may be deformed due to excessive adsorption force. This cannot ensure stable separation of the cut parts and the residue, affecting the cutting quality. Furthermore, there is no cooling or anti-oxidation mechanism, and the metal wire mesh is prone to oxidation during the cutting process, affecting the edge quality of the cut parts. Using movable cooling copper plates to cool the cutting area with compressed cold air, this method cannot dynamically adjust the cooling intensity according to the real-time temperature of the cutting area, resulting in high energy consumption. Summary of the Invention

[0005] The purpose of this invention is to solve the problem in the prior art that it is impossible to ensure stable separation between the cut part and the scrap, which affects the cutting quality, and proposes a metal wire mesh laser cutting device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a metal wire mesh laser cutting device, including a laser cutting machine, the laser cutting machine including a frame, a movable cutting head connected to the frame, and further including: A conveying system connected to the frame and conveying a metal wire mesh; The support platform includes a workbench fixedly connected to the frame. The workbench has multiple openings, and the openings are fitted with liftable trays. The workbench and multiple trays each include a base and a protrusion fixedly connected to the base. The wire mesh abuts against the top of the protrusion. A nitrogen protection mechanism includes an air passage and an air outlet inside the protrusion. The air passage's inlet is connected to an external nitrogen source, and its outlet is connected to the air outlet. The air outlet faces the metal mesh. The base of the tray is insulated from the protrusion. The protrusion is negatively charged when the metal mesh is cut. A spring is fixedly connected to the top of the air passage. The spring is conductive, and a plug is fixedly connected to the bottom of the air passage. The plug is electrically connected to the protrusion through the spring and is located at the connection between the air passage and the air outlet. The base of the tray is positively charged when the cutting part is cut off, and negatively charged when the cutting head is working. A metal vapor treatment mechanism, wherein the exhaust end of the metal vapor treatment mechanism faces the laser cutting machine.

[0007] In the aforementioned metal wire mesh laser cutting equipment, the conveying system includes a feeding shaft, a guide shaft, two guide components, and a take-up shaft that are rotatably mounted on the frame. The metal wire mesh is unwound by the feeding shaft, guided sequentially by the guide shaft and the two guide components, and then wound up by the take-up shaft.

[0008] In the aforementioned metal wire mesh laser cutting equipment, the guide assembly includes two adjusting shafts rotatably connected to the frame, with bearings installed at both ends of the adjusting shafts and between the frame, and the metal wire mesh passing through the space between the two adjusting shafts.

[0009] In the aforementioned metal wire mesh laser cutting equipment, the conveying system further includes an adjustment component. The adjustment component includes a motor installed inside an adjustment shaft. A worm gear is coaxially fixedly connected to the output end of the motor. Multiple adjustment wheels mesh on the worm gear. The adjustment shaft has a shaft cavity for the movement of the worm gear and the multiple adjustment wheels. The shaft cavity is connected to multiple adjustment slots. The multiple adjustment wheels are in one-to-one clearance fit with the multiple adjustment slots. The adjustment wheels extend out of the adjustment slots and contact the bottom of the metal wire mesh. The rotation axis of the adjustment wheels is perpendicular to the rotation axis of the adjustment shaft.

[0010] In the aforementioned metal wire mesh laser cutting equipment, the adjustment component includes a distance sensor mounted on the frame, which is used to monitor the offset of the metal wire mesh. The motor is electrically connected to a rotary joint, which is rotatably mounted on one end of the adjustment shaft. Both the rotary joint and the distance sensor are electrically connected to a controller, which is mounted on the frame and is used to receive signals from the distance sensor and control the working state of the motor through the rotary joint.

[0011] In the aforementioned metal wire mesh laser cutting equipment, the adjusting wheel includes a worm wheel that meshes with a worm gear. Rubber wheels are fixedly connected to both sides of the worm wheel. The rubber wheels are in clearance fit with the adjusting groove and in contact with the bottom of the metal wire mesh.

[0012] In the aforementioned metal wire laser cutting equipment, the protrusions have a mesh structure with triangular mesh lines, and the metal wire mesh between the two guide components abuts against the protrusions of the worktable and multiple trays.

[0013] In the aforementioned metal wire mesh laser cutting equipment, a first hydraulic cylinder is connected to the bottom of the tray, the first hydraulic cylinder is installed on the ground, multiple fixed baffles are fixedly connected to the bottom of the worktable, and multiple movable baffles that can be raised and lowered are connected to the frame. Each of the multiple fixed baffles and movable baffles corresponds to a multiple tray, and the side of the tray slides in cooperation with the fixed baffles and movable baffles.

[0014] In the aforementioned metal wire mesh laser cutting equipment, the output end of the first hydraulic cylinder is rotatably connected to the bottom of the tray. A downward-turned edge is fixedly connected to the side of the tray, and an upward-turned edge is fixedly connected to the side of the movable baffle. The upward-turned edge abuts against the top of the downward-turned edge. A second hydraulic cylinder is fixedly connected to the bottom of the movable baffle. The second hydraulic cylinder is mounted on the frame, and a discharge plate is fixedly connected to the frame. The discharge plate is inclined. After the tray and the movable baffle move down synchronously and leave the worktable, the movable baffle continues to move down, and its upward-turned edge presses down on the downward-turned edge of the tray to drive the tray to rotate, tilting the cut parts on the tray onto the discharge plate.

[0015] In the aforementioned metal wire mesh laser cutting equipment, the metal vapor treatment mechanism includes a dust pump, the suction end of which is connected to a dust suction pipe, the middle of which is connected to a sludge collection box, and the end away from the dust pump is connected to a dust suction hood. The suction end of the dust suction hood faces the laser cutting machine. A dust collection plate is fixedly connected to the connection between the dust suction pipe and the sludge collection box, and a water pipe is connected thereto. The water outlet of the water pipe faces the dust collection plate. The dust collection plate is connected to positive electricity and has an anti-stick coating on its surface.

[0016] Compared with existing technologies, the advantages of this invention are: This invention significantly reduces the contact area with the wire mesh by setting up a support platform. The top of the worktable and tray features triangular mesh protrusions, preventing the wire mesh from getting caught or tilted during transport and ensuring cutting stability. During cutting, the tray protrusions are negatively charged, creating an electrostatic environment through the wire mesh. After cutting, the tray base is positively charged, using electrostatic attraction to hold the cut parts together, ensuring stable separation from the remaining material and effectively avoiding separation problems caused by micro-melting adhesion or static electricity. A nitrogen protection mechanism is incorporated, with the internal air passages of the protrusions connected to a nitrogen source. A plug at the outlet is negatively charged along with the protrusion via a spring. During cutting, the increased resistance of the wire mesh in the high-temperature area weakens the electrostatic repulsion between the protrusion and the plug, causing the plug to move upwards and increase the air passage opening. This automatically increases the nitrogen flow rate in the high-temperature area, providing targeted cooling and preventing oxidation, while maintaining a lower nitrogen flow rate in non-cutting areas, saving nitrogen and reducing energy consumption.

[0017] 2. This invention incorporates a metal vapor treatment mechanism. A vacuum pump operates, drawing metal vapor directionally through a suction pipe and hood, preventing diffuse contamination. A positively charged dust collection plate inside the suction pipe adsorbs negatively charged metal vapor and particles. The dust collection plate has an anti-stick coating, and with regular flushing via a water pipe, dust accumulation and clogging are prevented, achieving continuous and efficient purification. Simultaneously, the cutting head is negatively charged, generating electrostatic repulsion with the negatively charged metal vapor, reducing vapor adhesion to the cutting head and minimizing equipment malfunctions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the working operation of the metal wire mesh laser cutting equipment proposed in this invention; Figure 2 This is a rear-view schematic diagram of the metal wire mesh laser cutting equipment proposed in this invention. Figure 3 This is a half-sectional schematic diagram of the metal wire mesh laser cutting equipment proposed in this invention; Figure 4 for Figure 3 A magnified view of a section at point X; Figure 5 This is a horizontal sectional view of the frame of the metal wire mesh laser cutting equipment proposed in this invention; Figure 6 This is a vertical sectional view of the dust suction pipe and the sludge collection box of the metal wire laser cutting equipment proposed in this invention; Figure 7 This is a half-sectional schematic diagram of the adjustment shaft of the metal wire mesh laser cutting equipment proposed in this invention. Figure 8 This is a schematic diagram of the tray structure of the metal wire mesh laser cutting equipment proposed in this invention; Figure 9 This is a partial vertical sectional view of the tray of the metal wire mesh laser cutting equipment proposed in this invention; Figure 10 for Figure 9 A magnified view of the area at point Y in the middle.

[0019] In the diagram: 1. Dust pump, 2. Sludge collection box, 3. Laser cutting machine, 4. Metal wire mesh, 11. Dust suction pipe, 12. Dust suction hood, 13. Water pipe, 14. Dust collection plate, 31. Feeding shaft, 32. Guide shaft, 33. Adjusting shaft, 34. First hydraulic cylinder, 35. Second hydraulic cylinder, 36. Discharge plate, 37. Cutting head, 38. Receiving shaft, 39. Tray, 310. Workbench, 311. Fixed baffle, 312. Movable baffle, 313. Distance sensor, 331. Rotary joint, 332. Motor, 333. Adjusting wheel, 334. Worm gear, 335. Bearing, 391. Chassis, 392. Protrusion, 393. Air passage, 394. Air outlet, 395. Plug, 396. Spring. Detailed Implementation

[0020] The following examples are for illustrative purposes only and are not intended to limit the scope of the invention.

[0021] Reference Figures 1-4 A metal wire mesh laser cutting device, including a laser cutting machine 3, the laser cutting machine 3 including a frame, a movable cutting head 37 connected to the frame, and further including: The laser cutting machine 3 uses existing technology and performs laser cutting operations under the control of a set program through a movable cutting head 37.

[0022] A conveying system is connected to the frame and conveys metal wire mesh 4.

[0023] The conveying system includes a feeding shaft 31, a guide shaft 32, two guide components, and a take-up shaft 38 that are rotatably mounted on the frame. The wire mesh 4 is unwound by the feeding shaft 31, guided by the guide shaft 32 and the two guide components in sequence, and then taken up by the take-up shaft 38.

[0024] Both the feeding shaft 31 and the receiving shaft 38 adopt existing technology and smoothly convey the metal wire mesh 4 through synchronous rotation.

[0025] The guide assembly includes two adjusting shafts 33 rotatably connected to the frame, with bearings 335 installed at both ends of the adjusting shafts 33 and the frame, and a wire mesh 4 passing between the two adjusting shafts 33.

[0026] The conveying system also includes an adjustment assembly, which includes a motor 332 installed inside the adjustment shaft 33. The output end of the motor 332 is coaxially fixedly connected to a worm gear 334. Multiple adjustment wheels 333 are meshed on the worm gear 334. The adjustment shaft 33 has a shaft cavity for the worm gear 334 and the multiple adjustment wheels 333 to move. The shaft cavity is connected to multiple adjustment grooves. The multiple adjustment wheels 333 are in one-to-one clearance fit with the multiple adjustment grooves. Part of the adjustment wheel 333 extends out of the adjustment groove and contacts the bottom of the metal wire mesh 4. The rotation axis of the adjustment wheel 333 is perpendicular to the rotation axis of the adjustment shaft 33.

[0027] The adjustment assembly includes a distance sensor 313 mounted on the frame, which is used to monitor the offset of the wire mesh 4. The motor 332 is electrically connected to a rotary joint 331, which is rotatably mounted on one end of the adjustment shaft 33. Both the rotary joint 331 and the distance sensor 313 are electrically connected to a controller, which is mounted on the frame and is used to receive the signal from the distance sensor 313 and control the working state of the motor 332 through the rotary joint 331.

[0028] The adjusting wheel 333 includes a worm wheel that meshes with the worm 334. Rubber wheels are fixedly connected to both sides of the worm wheel. The rubber wheels are in clearance fit with the adjusting groove and in contact fit with the bottom of the metal wire mesh 4.

[0029] The rubber wheel is insulated from the metal wire mesh 4. When the rubber wheel rotates, it drives the metal wire mesh 4 to move, so that the metal wire mesh 4 returns to the normal state from the offset state, ensuring the accuracy of laser cutting.

[0030] Reference Figures 3-5 and Figure 8 The support platform includes a workbench 310 fixedly connected to the frame. The workbench 310 has multiple openings, and the openings are fitted with liftable trays 39. The workbench 310 and the multiple trays 39 each include a base 391 and a protrusion 392 fixedly connected to the base 391. The wire mesh 4 abuts against the top of the protrusion 392.

[0031] The protrusion 392 has a mesh structure with triangular mesh lines. The metal wire mesh 4 between the two guide components abuts against the protrusion 392 of the worktable 310 and multiple trays 39.

[0032] The mesh protrusions 392 on the workbench 310 only serve to support the wire mesh 4, while the protrusions 392 on the tray 39 are used to support the cutting parts. After the tray 39 moves down, it can drive the cutting parts to move downward, making it easier to unload.

[0033] Reference Figure 9 and Figure 10 The nitrogen protection mechanism includes an air passage 393 and an air outlet 394 located inside the protrusion 392. The air inlet of the air passage 393 is connected to an external nitrogen source, and the air outlet is connected to the air outlet 394. The air outlet 394 faces the metal wire mesh 4. The base 391 of the tray 39 is insulated from the protrusion 392. The protrusion 392 of the tray 39 is connected to a negative voltage when the metal wire mesh 4 is cut. A spring 396 is fixedly connected to the top of the air passage 393. The spring 396 is conductive, and a plug 395 is fixedly connected to the bottom. The plug 395 is electrically connected to the protrusion 392 through the spring 396. The plug 395 is located at the connection between the air passage 393 and the air outlet 394. The base 391 of the tray 39 is connected to a positive voltage when the cutting part is cut off, and to a negative voltage when the cutting head 37 is working.

[0034] Reference Figure 3 and Figure 4The bottom of the tray 39 is connected to the first hydraulic cylinder 34, which is installed on the ground. The bottom of the workbench 310 is fixedly connected to multiple fixed baffles 311, and the frame is connected to multiple movable baffles 312 that can be raised and lowered. The multiple fixed baffles 311 and movable baffles 312 correspond one-to-one with the multiple trays 39. The sides of the trays 39 are slidably engaged with the fixed baffles 311 and movable baffles 312.

[0035] The output end of the first hydraulic cylinder 34 is rotatably connected to the bottom of the tray 39. A downward-turned edge is fixedly connected to the side of the tray 39, and an upward-turned edge is fixedly connected to the side of the movable baffle 312. The upward-turned edge abuts against the top of the downward-turned edge. A second hydraulic cylinder 35 is fixedly connected to the bottom of the movable baffle 312. The second hydraulic cylinder 35 is mounted on the frame. A discharge plate 36 is fixedly connected to the frame. The discharge plate 36 is inclined. After the tray 39 and the movable baffle 312 move down synchronously and leave the worktable 310, the movable baffle 312 continues to move down. Its upward-turned edge presses down on the downward-turned edge of the tray 39 to drive the tray 39 to rotate, and the cut parts on the tray 39 are poured onto the discharge plate 36.

[0036] Reference Figures 1-3 and Figure 6 The metal vapor treatment mechanism has its extraction end facing the laser cutting machine 3.

[0037] The metal vapor treatment mechanism includes a dust pump 1, with a dust suction pipe 11 connected to the suction end of the dust pump 1. A dust collection box 2 is connected to the middle of the dust suction pipe 11, and a dust suction hood 12 is connected to the end away from the dust pump 1. The suction end of the dust suction hood 12 faces the laser cutting machine 3. A dust collection plate 14 is fixedly connected to the connection between the dust suction pipe 11 and the dust collection box 2, and a water pipe 13 is connected thereto. The water outlet of the water pipe 13 faces the dust collection plate 14. The dust collection plate 14 is connected to positive electricity and has an anti-stick coating on its surface. The anti-stick coating adopts existing technology to reduce the adhesion of metal particles and dust, making it easy to clean.

[0038] When using this invention, the operator installs the rolled metal wire mesh 4 on the feeding shaft 31. The metal wire mesh 4 released by the feeding shaft 31 passes through the guide shaft 32 and two guide components, and is finally collected by the receiving shaft 38. The area between the two guide components is the working area for laser cutting.

[0039] The working area carries the wire mesh 4 through the workbench 310 and multiple trays 39 in the opening of the workbench 310. The trays 39 are similar in appearance to the workbench 310, and each has triangular protrusions 392 arranged in a grid pattern on the top to reduce the contact area with the wire mesh 4, effectively preventing the wire mesh 4 from getting caught during transportation and avoiding the wire mesh 4 from being skewed and affecting the cutting accuracy.

[0040] Power is supplied to the motor 332 inside the adjusting shaft 33 via the rotary joint 331. The controller receives the signal from the distance sensor 313. When the position of the metal wire mesh 4 shifts, the rotary joint 331 controls the motor 332 to work. The output of the motor 332 drives the worm gear 334 to rotate accordingly. The adjusting wheel 333 has a worm wheel in the middle and rubber wheels on both sides. The worm wheel drives the rubber wheels to rotate through meshing with the worm gear 334, thereby moving the metal wire mesh 4 and adjusting its position accordingly. This ensures the positional accuracy of the metal wire mesh 4 in the working area and guarantees the processing accuracy in laser cutting.

[0041] During the cutting operation, the mesh protrusions 392 that make up the tray 39 are first negatively charged. The protrusions 392 transfer the negative charge to the metal wire mesh 4 that they are in contact with. Nitrogen protection mechanisms are evenly distributed inside the protrusions 392. An external nitrogen gas source delivers nitrogen to the gas channel 393 and sprays it out through the gas outlet 394, so that the cutting process is in a nitrogen environment, which effectively prevents metal oxidation and cools down the high-heat laser cutting operation, thereby improving the quality of laser cutting.

[0042] A plug 395 is provided at the top of the air passage 393. Since both the top of the air passage 393 and the plug 395 are negatively charged, they repel each other, causing the plug 395 to move downward, reducing the connection diameter between the air passage 393 and the air outlet 394, thus restricting the emission of nitrogen. When the cutting head 37 performs laser cutting on the metal wire mesh 4, the temperature of the cut area of ​​the metal wire mesh 4 increases, and the resistance increases. In the voltage stabilizing circuit, the current of the corresponding protrusion 392 decreases, weakening the repulsive effect between the top of the air passage 393 and the plug 395. Under the rebound force of the spring 396, the plug 395 moves upward accordingly, increasing the connection diameter between the air passage 393 and the air outlet 394, and weakening the restriction on the emission of nitrogen. Thus, the higher the temperature, the greater the flow rate of nitrogen emitted by the nitrogen protection mechanism. Adaptive cooling is formed according to temperature changes, making the overall temperature of the cut part more uniform, effectively avoiding deformation of the cut part, and improving the quality of laser cutting.

[0043] After cutting, the base 391 that makes up the tray 39 is positively energized. Since the base 391 and the protrusion 392 are insulated from each other, the positively energized base 391 generates electrostatic attraction to the negatively energized protrusion 392 and the cut piece. Then the output ends of the first hydraulic cylinder 34 and the second hydraulic cylinder 35 retract. The output end of the first hydraulic cylinder 34 pulls the tray 39 down, taking the cut piece down with it. The worktable 310 supports the remaining material.

[0044] When the tray 39 moves down, the electrostatic adsorption of the cutting part by the tray 39 ensures stable separation between the cutting part and the scrap material. This prevents the cutting part and the scrap material from sticking or getting stuck due to electrostatic adsorption or micro-melting adhesion caused by cutting. It effectively avoids problems such as the scrap material being carried off course, the cutting part being stretched and deformed, and the need for additional separation processes in the future, thus ensuring cutting quality and reducing failures.

[0045] The output end of the second hydraulic cylinder 35 pulls the movable baffle 312 downwards in sync. Under the limitation of the fixed baffle 311 and the movable baffle 312, the output end of the first hydraulic cylinder 34 drives the tray 39 to continue to move downwards to the lower limit. Then, the output end of the second hydraulic cylinder 35 continues to drive the movable baffle 312 downwards. The upper edge of the movable baffle 312 presses down on the lower edge of the tray 39 to drive the tray 39 to rotate, tilting the cut pieces on the tray 39 onto the discharge plate 36. The cut pieces slide down from the discharge plate 36 for collection.

[0046] Then the second cylinder 35 and the first cylinder 34 are reset, so that the tray 39 returns to its original position.

[0047] During laser cutting, some metal is evaporated into metal vapor, which can easily cause malfunctions of the cutting head 37 and endanger the health of on-site personnel. Since the cutting head 37 is connected to a negative charge, it electrostatically repels the negatively charged metal vapor, effectively preventing metal vapor from adhering and reducing malfunctions of the cutting head 37.

[0048] The dust pump 1 operates by using the suction pipe 11 in conjunction with the suction hood 12 to draw in metal vapor or cooled air carrying metal particles, preventing metal vapor from dispersing into the air and harming personnel's health. The surface of the dust collection plate 14 is coated with an anti-stick coating to prevent metal particles and dust from adhering. The dust collection plate 14 is positively charged. When negatively charged metal vapor passes through the suction pipe 11, it is electrostatically attracted by the positively charged dust collection plate 14 and adheres to its surface. The water pipe 13 delivers water periodically to flush the dust collection plate 14, washing away the cooled metal particles and dust into the dust collection box 2. Finally, the dust collection box 2 is cleaned periodically by the staff.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. Wire mesh laser cutting apparatus comprising a laser cutting machine (3) comprising a frame to which a movable cutting head (37) is connected, characterized in that, Also include: The conveying system is connected on the frame, and the metal mesh (4) is conveyed; The carrying table includes a workbench (310) fixedly connected on the frame, the workbench (310) is provided with a plurality of openings, the inside gap of the opening is matched with a liftable tray (39), the workbench (310) and the plurality of trays (39) include a bottom disc (391) and a protrusion (392) fixedly connected on the bottom disc (391), and the metal mesh (4) abuts against the top of the protrusion (392); The nitrogen protection mechanism includes an air channel (393) and an air outlet (394) provided in the protrusion (392), the air inlet end of the air channel (393) is communicated with the outside nitrogen source, the air outlet end is communicated with the air outlet (394), the air outlet end of the air outlet (394) faces the metal mesh (4), the bottom disc (391) and the protrusion (392) of the tray (39) are mutually insulated, the protrusion (392) of the tray (39) is negatively charged when the metal mesh (4) is cut, the top end of the air channel (393) is fixedly connected with a spring (396), the spring (396) has conductivity, and the bottom end is fixedly connected with a plug (395), the plug (395) is electrically connected with the protrusion (392) through the spring (396), the plug (395) is located at the communication position of the air channel (393) and the air outlet (394), the bottom disc (391) of the tray (39) is positively charged when the cutting piece is cut off, and the cutting head (37) is negatively charged when working; The metal vapor treatment mechanism is provided with an air outlet end facing the laser cutting machine (3); The conveying system includes a feeding shaft (31), a guide shaft (32), two guide assemblies and a receiving shaft (38) rotatably installed on the frame, the metal mesh (4) is unwound from the feeding shaft (31), guided through the guide shaft (32) and the two guide assemblies in sequence, and then wound by the receiving shaft (38); The guide assembly includes two adjusting shafts (33) rotatably connected on the frame, bearings (335) are installed between the two ends of the adjusting shaft (33) and the frame, and the metal mesh (4) passes through between the two adjusting shafts (33); A plurality of movable baffles (312) are connected on the frame; The bottom of the tray (39) is connected with a first oil cylinder (34), the output end of the first oil cylinder (34) is rotatably connected with the bottom of the tray (39), the side surface of the tray (39) is fixedly connected with a lower flange, the side surface of the movable baffle (312) is fixedly connected with an upper flange, the upper flange abuts against the top of the lower flange, the bottom of the movable baffle (312) is fixedly connected with a second oil cylinder (35), the second oil cylinder (35) is installed on a frame, the frame is fixedly connected with a discharge plate (36), the discharge plate (36) is obliquely arranged, after the tray (39) and the movable baffle (312) are synchronously lowered to be separated from the workbench (310), the movable baffle (312) continues to be lowered, the upper flange thereof presses the lower flange of the tray (39) to drive the tray (39) to rotate, and the cutting piece on the tray (39) is poured onto the discharge plate (36).

2. The wire mesh laser cutting apparatus according to claim 1, wherein, The conveying system further comprises an adjusting assembly, the adjusting assembly comprises a motor (332) installed in the adjusting shaft (33), the output end of the motor (332) is coaxially fixedly connected with a worm (334), the worm (334) is meshed with a plurality of adjusting wheels (333), the adjusting shaft (33) is internally provided with a shaft cavity for movement of the worm (334) and the plurality of adjusting wheels (333), the shaft cavity is communicated with a plurality of adjusting grooves, the plurality of adjusting wheels (333) are in one-to-one correspondence with the plurality of adjusting grooves in gap cooperation, the adjusting wheels (333) partially extend out of the adjusting grooves and are in contact with the bottom of the metal wire mesh (4), and the rotation axis of the adjusting wheels (333) is perpendicular to the rotation axis of the adjusting shaft (33).

3. The wire mesh laser cutting apparatus of claim 2, wherein, The adjusting wheels (333) comprise a worm wheel meshed with the worm (334), the worm wheel is fixedly connected with rubber wheels on both sides, the rubber wheels are in gap cooperation with the adjusting grooves and are in contact with the bottom of the metal wire mesh (4).

4. The wire mesh laser cutting apparatus of claim 3, wherein, The adjusting assembly comprises a distance sensor (313) installed on the frame, the distance sensor (313) is used for monitoring the offset condition of the metal wire mesh (4), the motor (332) is electrically connected with a rotary joint (331), the rotary joint (331) is rotatably installed at one end of the adjusting shaft (33), the rotary joint (331) and the distance sensor (313) are both electrically connected with a controller, the controller is installed on the frame and is used for receiving the signal of the distance sensor (313) and controlling the working state of the motor (332) through the rotary joint (331).

5. The wire mesh laser cutting apparatus of claim 1, wherein, The protrusions (392) are in a mesh structure, the mesh lines are in a triangular shape, and the metal wire mesh (4) between the two guide assemblies abuts against the workbench (310) and the protrusions (392) of the plurality of trays (39).

6. The wire mesh laser cutting apparatus of claim 1, wherein, The first oil cylinder (34) is installed on the ground, the bottom of the workbench (310) is fixedly connected with a plurality of fixed baffles (311), the plurality of fixed baffles (311) and the movable baffle (312) are in one-to-one correspondence with the plurality of trays (39), and the side surface of the tray (39) is in sliding cooperation with the fixed baffles (311) and the movable baffle (312).

7. The wire mesh laser cutting apparatus of claim 1, wherein, Said metal vapor treatment mechanism includes a dust suction pump (1), the suction end of the dust suction pump (1) is communicated with a dust suction pipe (11), the middle part of the dust suction pipe (11) is communicated with a dirt collecting box (2), the end away from the dust suction pump (1) is communicated with a dust suction cover (12), the suction end of the dust suction cover (12) faces a laser cutting machine (3), the communication part of the dust suction pipe (11) and the dirt collecting box (2) is fixedly connected with a dust collecting plate (14) and is communicated with a water pipe (13), the water outlet end of the water pipe (13) faces the dust collecting plate (14), the dust collecting plate (14) is connected with positive electricity, and the surface is coated with an anti-sticking coating.

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