Wire mesh laser cutting device

Abstract

The metal wire mesh laser cutting device discloses to metal wire mesh processing device technical field, including laser cutting machine, the laser cutting machine includes frame body, the frame body is connected with movable cutting head, it further includes: conveying system, the conveying system is connected on the frame body, and conveying has metal wire mesh;Bearing station, the bearing station includes the workbench fixedly connected on the frame body, the workbench is opened with multiple openings, the present application is through setting bearing station, the top of workbench and tray adopts triangular net shape convex, greatly reduces the contact area with metal wire mesh, avoids the metal wire mesh to be hung or deflection when conveying, guarantees the cutting stability, when cutting, the tray convex interface negative electricity, forms electrostatic environment through the metal wire mesh conduction, after cutting, the tray bottom tray interface positive electricity, utilizes the electrostatic attraction adsorption cutting piece, ensures its and the rest material stable separation, effectively avoids the separation problem caused by micro-fusion adhesion or electrostatic.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wire mesh processing devices, in particular to a wire mesh laser cutting device. BACKGROUND

[0002] As a high-precision material, wire mesh is widely used in the fields of aerospace and medical devices, and laser cutting technology is often used in processing. The processing precision directly affects the quality and performance of the final product. In the process of laser cutting wire mesh, stable delivery of wire mesh, separation of cutting parts and excess material, anti-oxidation and cooling of the cutting area, and treatment of metal vapor are key links. In the prior art, the delivery of wire mesh is prone to deviation, and the separation of cutting parts and excess material is prone to deviation due to static electricity or micro-melting adhesion. When actively peeling the wire mesh at the end, the whole wire mesh is prone to deviation due to the peeling force, resulting in positioning error and affecting the cutting quality.

[0003] In the prior art, a vacuum chuck is used for negative pressure adsorption, and the cutting part is vertically peeled immediately after cutting. In this way, for light and thin or electrostatic wire mesh, the peeling may not be complete due to insufficient adsorption force, or the wire mesh may be deformed due to excessive adsorption force, which cannot ensure stable separation of the cutting part and the excess material, affecting the cutting quality. Moreover, no cooling or anti-oxidation mechanism is provided, and the wire mesh is prone to oxidation during cutting, affecting the edge quality of the cutting part. A movable cooling copper plate is used to cool the cutting area by compressing cold air. In this way, the cooling intensity cannot be dynamically adjusted according to the real-time temperature of the cutting area, and the energy consumption is high. SUMMARY

[0004] The purpose of the present application is to solve the problem that the prior art cannot ensure stable separation of the cutting part and the excess material, affecting the cutting quality, and to provide a wire mesh laser cutting device.

[0005] To achieve the above purpose, the present application adopts the following technical scheme: a wire mesh laser cutting device, comprising a laser cutting machine, the laser cutting machine comprising a frame body, the frame body being connected with a movable cutting head, further comprising:

[0006] A conveying system is connected to the frame body and conveys the wire mesh.

[0007] A carrying table comprises a workbench fixedly connected to the frame body, the workbench being provided with a plurality of openings, the openings being gap-fitted with liftable trays, the workbench and the plurality of trays each comprising a bottom disc and a protrusion fixedly connected to the bottom disc, and the wire mesh abutting against the top of the protrusion.

[0008] The nitrogen protection mechanism comprises a gas channel and a gas outlet, the gas channel is provided in the protrusion, the gas inlet end of the gas channel is communicated with the external nitrogen source, the gas outlet end is communicated with the gas outlet, the gas outlet end of the gas outlet faces the metal screen, the bottom plate of the tray is insulated from the protrusion, the protrusion of the tray is negatively charged when the metal screen is cut, the top end of the gas channel is fixedly connected with a spring, the spring has conductivity, and the bottom end is fixedly connected with a plug, the plug is electrically connected with the protrusion through the spring, the plug is located at the communication position of the gas channel and the gas outlet, the bottom plate of the tray is positively charged when the cutting piece is cut off, and the cutting head is negatively charged when working.

[0009] The metal vapor treatment mechanism is provided with a suction end facing the laser cutting machine.

[0010] In the above-mentioned metal screen laser cutting device, the conveying system comprises a feeding shaft, a guide shaft, two guide assemblies and a receiving shaft, the metal screen is unwound from the feeding shaft, guided through the guide shaft and the two guide assemblies in sequence, and then wound by the receiving shaft.

[0011] In the above-mentioned metal screen laser cutting device, the guide assembly comprises two adjusting shafts rotatably connected to the frame, bearings are arranged between the two ends of the adjusting shaft and the frame, and the metal screen passes through between the two adjusting shafts.

[0012] In the above-mentioned metal screen laser cutting device, the conveying system further comprises an adjusting assembly, the adjusting assembly comprises a motor installed in the adjusting shaft, a worm is fixedly connected to the output end of the motor in a same axis, a plurality of adjusting wheels are engaged with the worm, a shaft cavity is provided in the adjusting shaft for movement of the worm and the plurality of adjusting wheels, a plurality of adjusting grooves are communicated with the shaft cavity, the plurality of adjusting wheels are in gap cooperation with the plurality of adjusting grooves one by one, the adjusting wheels partially extend out of the adjusting grooves and are in contact with the bottom of the metal screen, and the rotation axis of the adjusting wheel is perpendicular to the rotation axis of the adjusting shaft.

[0013] In the above-mentioned metal screen laser cutting device, the adjusting assembly comprises a distance sensor installed on the frame, the distance sensor is used for monitoring the deviation of the metal screen, the motor is electrically connected with a rotary joint, the rotary joint is rotatably installed at one end of the adjusting shaft, the rotary joint and the distance sensor are electrically connected with a controller, the controller is installed on the frame and is used for receiving the signal of the distance sensor and controlling the working state of the motor through the rotary joint.

[0014] In the above-mentioned metal screen laser cutting device, the adjusting wheel comprises a worm wheel engaged with the worm, rubber wheels are fixedly connected to the two sides of the worm wheel, the rubber wheels are in gap cooperation with the adjusting grooves and in contact with the bottom of the metal screen.

[0015] In the above-mentioned metal wire screen laser cutting device, the protrusions are in a mesh structure, the mesh lines are triangular, and the metal wire screen between the two guide assemblies abuts against the protrusions of the workbench and the multiple trays.

[0016] In the above-mentioned metal wire screen laser cutting device, the bottom of the tray is connected with a first oil cylinder, the first oil cylinder is installed on the ground, the bottom of the workbench is fixedly connected with multiple fixed baffles, the frame body is connected with multiple liftable movable baffles, the multiple fixed baffles and movable baffles are in one-to-one correspondence with the multiple trays, and the side surface of the tray is in sliding fit with the fixed baffles and movable baffles.

[0017] In the above-mentioned metal wire screen laser cutting device, the output end of the first oil cylinder is rotationally connected with the bottom of the tray, the side surface of the tray is fixedly connected with a lower turning edge, the side surface of the movable baffle is fixedly connected with an upper turning edge, the upper turning edge abuts against the top of the lower turning edge, the bottom of the movable baffle is fixedly connected with a second oil cylinder, the second oil cylinder is installed on the frame body, the frame body is fixedly connected with a discharging plate, the discharging plate is obliquely arranged, after the tray and the movable baffle are synchronously lowered to be separated from the workbench, the movable baffle continues to be lowered, the upper turning edge thereof presses the lower turning edge of the tray to drive the tray to rotate, and the cutting piece on the tray is poured onto the discharging plate.

[0018] In the above-mentioned metal wire screen laser cutting device, the metal vapor treatment mechanism comprises a dust suction pump, the suction end of the dust suction pump is communicated with a dust suction pipe, the middle part of the dust suction pipe is communicated with a dirt collecting box, the end away from the dust suction pump is communicated with a dust suction cover, the suction end of the dust suction cover faces the laser cutting machine, the communication part of the dust suction pipe and the dirt collecting box is fixedly connected with a dust collecting plate and is communicated with a water pipe, the water outlet end of the water pipe faces the dust collecting plate, the dust collecting plate is positively charged and has an anti-sticking coating on the surface.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] 1. The present application is provided with a bearing table, the top of the workbench and the tray is provided with a triangular mesh protrusion, which greatly reduces the contact area with the metal wire screen, avoids the metal wire screen from being caught or deviated during conveying, and ensures the cutting stability; during cutting, the tray protrusion is negatively charged, and an electrostatic environment is formed through the conduction of the metal wire screen, after cutting, the tray bottom is positively charged, and the cutting piece is adsorbed by the electrostatic attraction, which ensures its stable separation from the remaining material and effectively avoids the separation problem caused by slight melting adhesion or static electricity; the nitrogen protection mechanism is provided, the internal air duct of the protrusion is communicated with the nitrogen source, the plug at the gas outlet is negatively charged with the protrusion through the spring, the resistance of the metal wire screen in the high-temperature area increases during cutting, which reduces the electrostatic repulsion between the protrusion and the plug, the plug moves upward to increase the air duct opening, and the nitrogen flow in the high-temperature area is automatically increased, which is targeted to reduce the temperature and prevent oxidation, and the nitrogen flow in the non-cutting area is kept small, which saves nitrogen and reduces energy consumption.

[0021] 2、The metal vapor treatment mechanism is arranged, the dust suction pump works, the metal vapor is sucked through the dust suction pipe and the dust suction cover, the metal vapor is avoided from diffusing pollution, the dust collection plate in the dust suction pipe is connected to positive electricity, the metal vapor and particles with negative electricity are adsorbed, the dust collection plate surface is provided with an anti-sticking coating, and the dust collection plate is prevented from being blocked by dust by being washed by the water pipe at regular time, so that continuous and efficient purification effect is realized; the cutting head is connected to negative electricity, electrostatic repulsion is generated with the metal vapor with negative electricity, the adhesion of the vapor on the cutting head is reduced, and equipment failure is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 The working schematic view of the metal wire mesh laser cutting device is provided in the application;

[0023] Figure 2 The rear view direction schematic view of the metal wire mesh laser cutting device is provided in the application;

[0024] Figure 3 The half-section schematic view of the metal wire mesh laser cutting device is provided in the application;

[0025] Figure 4 The local enlarged view of X in the application; Figure 3

[0026] Figure 5 The horizontal section view of the frame body of the metal wire mesh laser cutting device is provided in the application;

[0027] Figure 6 The vertical section view of the dust suction pipe and the dirt collection box of the metal wire mesh laser cutting device is provided in the application;

[0028] Figure 7 The half-section schematic view of the adjusting shaft of the metal wire mesh laser cutting device is provided in the application;

[0029] Figure 8 The tray structure schematic view of the metal wire mesh laser cutting device is provided in the application;

[0030] Figure 9 The local vertical section view of the tray of the metal wire mesh laser cutting device is provided in the application;

[0031] Figure 10 The local enlarged view of Y in the application; Figure 9

[0032] ​​In the figure: 1, dust suction pump, 2, dust collecting box, 3, laser cutting machine, 4, metal wire mesh, 11, dust suction pipe, 12, dust suction cover, 13, water pipe, 14, dust collecting plate, 31, feeding shaft, 32, guide shaft, 33, adjusting shaft, 34, first oil cylinder, 35, second oil cylinder, 36, discharging 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, 335, bearing, 391, base plate, 392, protrusion, 393, air duct, 394, air outlet, 395, plug, 396, spring. DETAILED DESCRIPTION

[0033] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0034] Reference Figures 1-4 The metal wire mesh laser cutting device comprises a laser cutting machine 3, the laser cutting machine 3 comprises a frame body, the frame body is connected with a movable cutting head 37, and the metal wire mesh laser cutting device further comprises:

[0035] The laser cutting machine 3 adopts the prior art, and the movable cutting head 37 is used to perform a laser cutting operation under the control of a set program.

[0036] The conveying system is connected to the frame body and conveys the metal wire mesh 4.

[0037] The conveying system comprises a feeding shaft 31, a guide shaft 32 and a receiving shaft 38 which are rotatably installed on the frame body, and the metal wire mesh 4 is unwound from the feeding shaft 31, guided through the guide shaft 32 and the two guide assemblies and then wound on the receiving shaft 38.

[0038] The feeding shaft 31 and the receiving shaft 38 both adopt the prior art and are used to stably convey the metal wire mesh 4 by rotating synchronously.

[0039] The guide assembly comprises two adjusting shafts 33 which are rotatably connected to the frame body, bearings 335 are installed between the two ends of the adjusting shaft 33 and the frame body, and the metal wire mesh 4 passes through between the two adjusting shafts 33.

[0040] The conveying system further comprises an adjusting assembly, the adjusting assembly comprising a motor 332 mounted inside the adjusting shaft 33, a worm 334 coaxially fixedly connected to an output end of the motor 332, a plurality of adjusting wheels 333 engaged with the worm 334, an axial cavity provided in the adjusting shaft 33 for movement of the worm 334 and the plurality of adjusting wheels 333, a plurality of adjusting grooves in communication with the axial cavity, and the plurality of adjusting wheels 333 one-to-one corresponding to the plurality of adjusting grooves in clearance fit, the adjusting wheels 333 partially extending out of the adjusting grooves and in contact fit with the bottom of the wire mesh 4, and the rotation axis of the adjusting wheels 333 being perpendicular to the rotation axis of the adjusting shaft 33.

[0041] The adjusting assembly comprises a distance sensor 313 mounted on the frame body, the distance sensor 313 being used to monitor the offset condition of the wire mesh 4, the motor 332 being electrically connected to a rotary joint 331, the rotary joint 331 being rotatably mounted at one end of the adjusting shaft 33, the rotary joint 331 and the distance sensor 313 both being electrically connected to a controller, the controller being mounted on the frame body and being used to receive the signal of the distance sensor 313 and control the working state of the motor 332 through the rotary joint 331.

[0042] The adjusting wheel 333 comprises a worm wheel engaged with the worm 334, rubber wheels fixedly connected to both sides of the worm wheel, the rubber wheels being in clearance fit with the adjusting grooves and in contact fit with the bottom of the wire mesh 4.

[0043] The rubber wheels are insulated from the wire mesh 4, and when the rubber wheels rotate, the wire mesh 4 is moved to restore the wire mesh 4 from the offset state to the normal state, thereby ensuring the accuracy during laser cutting.

[0044] With reference to Figures 3-5 and Figure 8 , the bearing table comprises a workbench 310 fixedly connected to the frame body, the workbench 310 being provided with a plurality of openings, the openings being in clearance fit with liftable trays 39 inside, and the workbench 310 and the plurality of trays 39 both comprising a bottom disc 391 and a protrusion 392 fixedly connected to the bottom disc 391, and the wire mesh 4 abutting against the top of the protrusion 392.

[0045] The protrusion 392 has a mesh structure, and the mesh lines thereof are triangular, and the wire mesh 4 between the two guide assemblies abuts against the protrusions 392 of the workbench 310 and the plurality of trays 39.

[0046] The mesh protrusions 392 on the workbench 310 only have a bearing effect on the wire mesh 4, and the protrusions 392 on the trays 39 are used to bear the cutting pieces, and after the trays 39 move downward, the cutting pieces can be moved downward, thereby facilitating unloading.

[0047] With reference to Figure 9 and Figure 10, nitrogen protection mechanism, the nitrogen protection mechanism includes air channel 393 opened in the inside of the protrusion 392, air outlet 394, the air inlet end of the air channel 393 is communicated with the nitrogen source of outside, the air outlet end is communicated with the air outlet 394, the air outlet end of the air outlet 394 is towards the wire mesh 4, the bottom disc 391 of the tray 39 is insulated with the protrusion 392, the protrusion 392 of the tray 39 is negative when the wire mesh 4 is cut, the top end of the air channel 393 is fixedly connected with the spring 396, the spring 396 has conductivity, and the bottom end is fixedly connected with the plug 395, the plug 395 is electrically connected with the protrusion 392 through the spring 396, the plug 395 is located at the communication place of the air channel 393 and the air outlet 394, the bottom disc 391 of the tray 39 is positive when the cutting piece is cut, the cutting head 37 is negative when working.

[0048] With reference to Figure 3 And Figure 4 The bottom of the tray 39 is connected with the first oil cylinder 34, 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, a plurality of movable baffles 312 are connected on the frame body, the plurality of fixed baffles 311 and movable baffles 312 are one-to-one corresponding with the plurality of trays 39, and the side surface of the tray 39 is slidably connected with the fixed baffle 311 and the movable baffle 312.

[0049] 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 is abutted on the top of the lower flange, the bottom of the movable baffle 312 is fixedly connected with the second oil cylinder 35, the second oil cylinder 35 is installed on the frame body, the frame body is fixedly connected with the discharge plate 36, and the discharge plate 36 is inclinedly arranged; after the tray 39 and the movable baffle 312 are synchronously moved downward and separated from the workbench 310, the movable baffle 312 continues to move downward, 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.

[0050] With reference to Figures 1-3 And Figure 6 The metal vapor treatment mechanism, the air outlet end of the metal vapor treatment mechanism is towards the laser cutting machine 3.

[0051] The metal vapor treatment mechanism includes the dust suction pump 1, the dust suction pipe 11 is communicated with the air outlet end of the dust suction pump 1, the dust suction pipe 11 is communicated with the dust collection box 2 in the middle part, the end away from the dust suction pump 1 is communicated with the dust suction cover 12, the air outlet end of the dust suction cover 12 is towards the laser cutting machine 3, the dust suction pipe 11 is fixedly connected with the dust collection plate 14 at the communication place with the dust collection box 2, and is communicated with the water pipe 13, the water outlet end of the water pipe 13 is towards the dust collection plate 14, the dust collection plate 14 is positive, and the surface is coated with an anti-sticking coating, the anti-sticking coating adopts the prior art, is used for reducing the adhesion of metal particles and dust, and facilitates cleaning.

[0052] In use of the present application, the operator installs the metal wire mesh 4 in a roll 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 assemblies, and is finally collected by the collecting shaft 38, and the area between the two guide assemblies is the working area for laser cutting.

[0053] The working area carries the metal wire mesh 4 through the workbench 310 and a plurality of trays 39 in the opening of the workbench 310, the trays 39 are similar to the appearance of the workbench 310, and the top of each is provided with a plurality of triangular protrusions 392 arranged in a grid pattern, which reduces the contact area with the metal wire mesh 4 and effectively prevents the metal wire mesh 4 from being caught during transportation, thereby avoiding the metal wire mesh 4 from being skewed and affecting the cutting accuracy.

[0054] The power supply is connected to the motor 332 inside the adjusting shaft 33 through the rotary joint 331, and the controller receives the signal of the distance sensor 313, when the position of the metal wire mesh 4 deviates, the motor 332 is controlled to work through the rotary joint 331, and the output end of the motor 332 drives the worm 334 to rotate correspondingly, the adjusting wheel 333 is provided with a worm gear in the middle and rubber wheels on both sides, the worm gear drives the rubber wheels to rotate through the meshing with the worm 334, thereby driving the metal wire mesh 4 to move, correspondingly adjusting the position of the metal wire mesh 4, ensuring the position accuracy of the metal wire mesh 4 in the working area, and ensuring the processing accuracy in laser cutting.

[0055] During cutting operation, the grid protrusions 392 constituting the tray 39 are first electrified negatively, the protrusions 392 transfer the negative electricity to the metal wire mesh 4 in contact with them, and the nitrogen protection mechanism is uniformly arranged inside the protrusions 392, the external nitrogen source delivers nitrogen to the air duct 393 and sprays it out through the air outlet 394, so that the cutting process is in a nitrogen environment, effectively preventing metal oxidation and cooling for high-heat laser cutting operation, and improving the quality of laser cutting.

[0056] The air duct 393 is provided with a plug 395 at the top, since the top of the air duct 393 and the plug 395 are both electrified negatively, the repulsion between them makes the plug 395 move downward, reducing the communication caliber of the air duct 393 and the air outlet 394, and limiting the spraying of nitrogen, when the cutting head 37 performs laser cutting on the metal wire mesh 4, the temperature of the cut position of the metal wire mesh 4 increases, the resistance increases, and in the voltage stabilizing circuit, the current of the corresponding part of the protrusions 392 decreases, the repulsion between the top of the air duct 393 and the plug 395 weakens, the plug 395 moves upward correspondingly under the resilience of the spring 396, the communication caliber of the air duct 393 and the air outlet 394 increases, and the limitation on the spraying of nitrogen is weakened, so that the higher the temperature, the greater the flow of nitrogen sprayed by the nitrogen protection mechanism, and the temperature is adaptively lowered according to the temperature change, so that the overall temperature of the cutting piece is relatively uniform, effectively avoiding the deformation of the cutting piece, and improving the quality of laser cutting.

[0057] After cutting, the bottom plate 391 of the tray 39 is positively electrified. Since the bottom plate 391 of the tray 39 and the protrusion 392 are insulated from each other, the positively electrified bottom plate 391 generates electrostatic attraction to the negatively electrified protrusion 392 and the cutting piece. Then, the output ends of the first and second oil cylinders 34 and 35 are retracted, the output end of the first oil cylinder 34 pulls the tray 39 downward, and the workbench 310 supports the remaining material.

[0058] When the tray 39 is lowered, the electrostatic adsorption of the tray 39 to the cutting piece ensures stable separation of the cutting piece from the remaining material, prevents the cutting piece from being adhered or hung due to electrostatic adsorption and cutting, effectively avoids the problems of the remaining material being deviated, the cutting piece being deformed, and the subsequent separation process being increased, ensures the cutting quality, and reduces the failure.

[0059] The output end of the second oil cylinder 35 pulls the movable baffle 312 to move downward synchronously. Under the limiting of the fixed baffle 311 and the movable baffle 312, the output end of the first oil cylinder 34 continuously pulls the tray 39 to move downward to the lower limit. Then, the output end of the second oil cylinder 35 continuously pulls the movable baffle 312 to move downward. The upper turning edge of the movable baffle 312 presses the lower turning edge of the tray 39 to drive the tray 39 to rotate, so as to dump the cutting piece on the tray 39 onto the discharge plate 36. The cutting piece slides down from the discharge plate 36 to be collected.

[0060] Then, the second oil cylinder 35 and the first oil cylinder 34 are reset to restore the tray 39 to the original position.

[0061] During the laser cutting process, part of the metal is evaporated into metal vapor, which is easy to cause the cutting head 37 to fail and harm the health of the on-site personnel. Since the cutting head 37 is negatively electrified, the negatively electrified metal vapor is electrostatically repelled, effectively preventing the metal vapor from adhering and reducing the failure of the cutting head 37.

[0062] The dust suction pump 1 works to suck the metal vapor or the air carrying the metal particles after cooling through the cooperation of the dust suction pipe 11 and the dust suction cover 12, preventing the metal vapor from diffusing into the on-site air to harm the health of the personnel. The surface of the dust collection plate 14 is coated with an anti-sticking coating to prevent metal particles and dust from adhering. The dust collection plate 14 is positively electrified. When the negatively electrified metal vapor passes through the dust suction pipe 11, it is electrostatically attracted and adheres to the surface of the positively electrified dust collection plate 14. The water pipe 13 sends water at regular intervals to flush the dust collection plate 14, flushes the metal particles and dust formed after cooling into the dust collection box 2, and finally the personnel clean the dust collection box 2 regularly.

[0063] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A wire mesh laser cutting device comprising a laser cutting machine (3) comprising a frame body, on 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) opened 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 communicated with 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); The conveying system further includes an adjusting assembly, the adjusting assembly includes a motor (332) installed in the adjusting shaft (33), a worm (334) coaxially fixedly connected with the output end of the motor (332), a plurality of adjusting wheels (333) meshed on the worm (334), an axle cavity for movement of the worm (334) and the plurality of adjusting wheels (333) is formed in the adjusting shaft (33), a plurality of adjusting grooves are communicated with the axle cavity, the plurality of adjusting wheels (333) are in gap fit with the plurality of adjusting grooves one by one, the adjusting wheels (333) partially extend out of the adjusting grooves and are in contact with the bottom of the metal mesh (4), and the rotation axis of the adjusting wheel (333) is perpendicular to the rotation axis of the adjusting shaft (33). The adjusting wheel (333) comprises a worm wheel engaged with the worm (334), and rubber wheels are fixedly connected on both sides of the worm wheel, which are in gap cooperation with the adjusting groove and in contact cooperation with the bottom of the wire mesh (4).

2. The wire mesh laser cutting apparatus of claim 1, wherein, The adjusting assembly comprises a distance sensor (313) mounted on the frame, which is used to monitor the deviation of the wire mesh (4), and the motor (332) is electrically connected with a rotary joint (331) rotatably mounted on one end of the adjusting shaft (33), and the rotary joint (331) and the distance sensor (313) are both electrically connected with a controller mounted on the frame, which is used to receive the signal of the distance sensor (313) and control the working state of the motor (332) through the rotary joint (331).

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

4. The wire mesh laser cutting apparatus of claim 1, wherein, The bottom of the tray (39) is connected with a first oil cylinder (34), 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), and the frame is connected with a plurality of liftable movable baffles (312). The plurality of fixed baffles (311) and movable baffles (312) correspond to the plurality of trays (39) one by one, and the side surface of the tray (39) is in sliding cooperation with the fixed baffles (311) and movable baffles (312).

5. The wire mesh laser cutting apparatus of claim 4, wherein, 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 the frame, the frame is fixedly connected with a discharge plate (36), and the discharge plate (36) is inclinedly arranged. After the tray (39) and the movable baffle (312) are synchronously lowered to disengage from the workbench (310), the movable baffle (312) continues to move downward, the upper flange thereof presses the lower flange of the tray (39) to drive the tray (39) to rotate, and the cutting pieces on the tray (39) are poured onto the discharge plate (36).

6. The wire mesh laser cutting apparatus of claim 1, wherein, The metal vapor treatment mechanism comprises 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 dust collection 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 the laser cutting machine (3), the communication part of the dust suction pipe (11) and the dust collection box (2) is fixedly connected with a dust collection plate (14) and is communicated with a water pipe (13), the water outlet end of the water pipe (13) faces the dust collection plate (14), the dust collection plate (14) is connected with positive electricity and is coated with an anti-sticking coating.

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