Laser cutting machine with local welding slag cleaning function

Abstract

The invention discloses a laser cutting machine with a local welding slag cleaning function, which comprises a laser lathe bed, a transverse and longitudinal moving cutting device is arranged at the upper end of the laser lathe bed, a welding slag suction device is fixedly connected to one side of the transverse and longitudinal moving cutting device, a material carrying platform is arranged at the upper end of the laser lathe bed, and a plurality of sundry material collecting vehicles are arranged at the bottom of the material carrying platform. A plurality of ground feet are equidistantly arranged at the bottom of the laser lathe bed; the transverse and longitudinal moving cutting device comprises a moving cross beam, a transverse gear rack motor moving mechanism is arranged at the bottom of one side of the moving cross beam, a longitudinal gear rack motor moving mechanism is arranged at the upper end of the moving cross beam, and bottom welding slag adsorption devices are arranged on the two sides of bottom feet, fixedly connected to the moving cross beam, of the right lower end of the moving cross beam. The double-stage adsorption system has the beneficial effects that the welding slag adsorption device at the bottom of the double-stage adsorption system is linked with the welding slag suction device, magnetic adsorption and negative pressure pneumatic suction are combined, synchronous displacement is carried out along with the laser cutting head, and the local welding slag adsorption effect is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser cutting, and particularly relates to a laser cutting machine with local welding slag cleaning. Background Art

[0002] During the laser cutting process, the laser beam locally heats the metal workpiece to a high temperature, and the metal surface quickly melts to form liquid metal. At the same time, the injection of air flow or auxiliary gas helps to blow the melted metal away from the cutting area. However, due to factors such as the speed, pressure, and angle of the cutting gas, the discharge of the melted metal may not be complete, forming some small particle metal oxides. These metal oxides adhere to the surface of the cutting area, thus forming welding slag adhering to the rack on the bed. For the already formed welding slag, the existing cleaning methods have problems such as incomplete cleaning, low cleaning efficiency due to the need to shovel the rack, and at the same time, during laser cutting, smoke and dust are also generated. The traditional air flow adsorption method installs a plurality of adsorption vacancies at equal distances on both sides of the bottom of the bed to adsorb the whole bed, with a large adsorption area and poor effect, and there is no synchronous adsorption treatment for the local area during the cutting of the laser head. This solution designs a laser cutting machine for local welding slag cleaning, which can effectively solve this problem. Summary of the Invention

[0003] The purpose of the present invention is to solve the problem that the traditional welding slag cleaning methods mainly include mechanical cleaning and air flow adsorption method. Mechanical cleaning usually relies on brushes or tools to clean the rack on the bed. Since the rack itself is made of metal iron, the welding slag is easily adsorbed on its surface after high-temperature melting. This solution adopts the combination of a diamond-shaped bearing bar and a diamond-shaped cover plate, which enhances the structure. At the same time, the cover plate is made of high-temperature resistant material and is not easy to accumulate welding slag on its surface. It also adopts a separated method, which is more convenient to replace and clean, solving the problem of welding slag cleaning. At the same time, it adopts a follow-up adsorption method, which also solves the problems of welding slag splashing and poor dust adsorption effect resulting in environmental pollution in the workshop.

[0004] The present invention realizes the above purpose through the following technical solutions: A laser cutting machine with local welding slag cleaning, including a laser bed, a horizontal and vertical moving cutting device is arranged at the upper end of the laser bed, a welding slag suction device is fixedly connected to one side of the horizontal and vertical moving cutting device, a loading platform is arranged at the upper end of the laser bed, a plurality of miscellaneous material collection carts are arranged at the bottom of the loading platform, and a plurality of floor feet are arranged at equal distances at the bottom of the laser bed;

[0005] The horizontal and vertical moving cutting device includes a moving crossbeam. At the bottom on one side of the moving crossbeam, there is a horizontal gear-rack motor moving mechanism. At the upper end of the moving crossbeam, there is a vertical gear-rack motor moving mechanism. At the bottom of the moving crossbeam, on both sides of the feet fixed to the bottom of the moving crossbeam, there is a bottom welding slag adsorption device. On both sides of the moving crossbeam, sliding mechanisms are synchronously arranged for the horizontal movement of the horizontal and vertical moving cutting device. On one side of the tail of the laser bed, there is a bottom dust extraction pipe connection port.

[0006] Furthermore, the bottom welding slag adsorption device includes a fixed connection crossbeam arm, which is fixedly connected to both sides of the bottom of the moving crossbeam. At one side end of the fixed connection crossbeam arm, several inclined triangular welding slag adsorption boxes are fixedly connected. Inside the inclined triangular welding slag adsorption boxes, several magnetic adsorption blocks are arranged. On the upper end of the inclined triangular welding slag adsorption boxes, there is a grille. On the back of the inclined triangular welding slag adsorption boxes, there is a dust extraction connection port. The magnetic adsorption blocks are detachable neodymium iron boron permanent magnets, and their surfaces are covered with high-temperature resistant silica gel layers. And the magnetic adsorption blocks are connected to the inner wall of the inclined triangular welding slag adsorption boxes through a slide rail structure. The double-stage adsorption system and the up-and-down linkage design of the bottom welding slag adsorption device and the welding slag suction device realize the combination of real-time local cleaning and large-range negative pressure suction in the cutting area. Compared with the traditional single-suction nozzle equipment, the efficiency of welding slag cleaning is greatly improved. The magnetic and pneumatic composite adsorption in the inclined triangular welding slag adsorption box and the cooperation of the magnetic adsorption blocks and the dust extraction connection port can capture magnetic metal debris and non-magnetic dust at the same time, with stronger adaptability and compatibility for cutting various materials such as stainless steel and aluminum alloy.

[0007] Furthermore, the welding slag suction device includes a Z-direction moving cutting device. On one side of the lower end of the Z-direction moving cutting device, there is a first upper welding slag adsorption device fixedly connected. On the other side of the lower end of the Z-direction moving cutting device, there is a second upper welding slag adsorption device fixedly connected. The first upper welding slag adsorption device and the second upper welding slag adsorption device present a mirror structure, and a protective shell is arranged at the outer end. The mirror double adsorption covers without dead angles. No matter the cutting path direction (left → right or right → left), it can effectively capture the flying welding slag, realize the two-way interception of the molten slag on complex trajectories such as corners and arcs, and eliminate the one-sided adsorption blind area. The mirror double adsorption device can be independently started and stopped or the suction force can be adjusted according to the cutting position. The protective shell wraps the outside of the adsorption device to form a semi-closed diversion cavity to block the interference of external air turbulence (such as workshop ventilation) on the slag suction air flow. The protective shell adopts a high-temperature resistant ceramic coating or a double-layer heat insulation structure to ensure that the outer shell temperature is lower than 50°C to avoid scalding the operator.

[0008] Further, the first slag adsorption device at the upper end includes a fixed box body. At a corner of the upper end inside the fixed box body, a dust suction device is arranged. Adjacent to one side of the dust suction device, a filtering device is arranged. At the center of the lower end inside the fixed box body, a cyclone slag adsorption and filtering device is arranged. An inwardly folded slag baffle is arranged at the bottom of the fixed box body. The dust suction device and the filtering device are connected to each other through a pipeline. The filtering device and the cyclone slag adsorption and filtering device are connected to each other through a pipeline. Through the hierarchical treatment of the dust suction device, the filtering device, and the cyclone slag adsorption and filtering device, comprehensive adsorption of dust can be achieved. Whether it is large metal particles or fine dust, comprehensive adsorption can be carried out.

[0009] Further, the cyclone slag adsorption and filtering device includes a plug-in replacement box. A sealing cover is arranged at the upper end of the plug-in replacement box. The sealing cover is fixedly connected to a cyclone filtering chamber at the lower end. The upper surface of the cyclone filtering chamber is evenly arranged with leakage holes at equal distances for the ejection of slag. A slag adsorption port is arranged at the lower end of the cyclone filtering chamber. A first air extraction pipe connection port is arranged at the upper end of the cyclone filtering chamber. A partition ring plate is fixedly arranged at the outer circle of the bottom of the cyclone filtering chamber at the bottom of the plug-in replacement box for the blocking and storage of the fallen slag after the slag is ejected. A layer of leakage hole magnetic pole adsorption ring plate is arranged outside the outer circle of the cyclone filtering chamber at the lower end of the sealing cover. A second layer of magnetic pole adsorption ring plate is arranged outside the layer of leakage hole magnetic pole adsorption ring plate. The dust-containing air flow tangentially enters the cyclone filtering chamber from the slag adsorption port. Coarse-grained slag is ejected through the leakage holes after hitting the chamber wall due to centrifugal force. A layer of leakage hole magnetic pole adsorption ring plate is arranged in the area of the leakage holes for ejecting the slag to preferentially adsorb magnetic metal debris and reduce the risk of leakage hole blockage. The second layer of magnetic pole adsorption ring plate expands the magnetic field coverage range to capture escaping micron-sized metal dust. The overall capture rate of metal debris is increased by more than 40%. The relatively light slag falls along the inner side of the magnetic pole adsorption ring plate after separation and is blocked by the partition ring plate and guided to the bottom of the plug-in replacement box, facilitating cleaning and collection. The sealing cover adopts a silica gel sealing ring and a quick-lock buckle design to maintain the system negative pressure when replacing the plug-in box and prevent dust leakage. For non-magnetic materials (such as aluminum and copper), the magnetic pole adsorption function can be turned off or replaced with a non-magnetic leakage hole ring plate, relying only on centrifugal separation. The leakage holes adopt a tapered flared design to slow down the wear of the air flow on the hole edge. A pulse back-blowing system can be selectively connected to the first air extraction pipe connection port to regularly remove the fine dust attached to the magnetic pole ring plate.

[0010] Further, the filtering device includes a filtering box. A dust and slag collection bag is arranged inside the filtering box. A cyclone collection cover is arranged at the upper end of the filtering box. A second air extraction pipe connection port is arranged at one side end of the cyclone collection cover. A dust suction device pipeline connection port is arranged at the bottom of the filtering box. The collected fine iron filings and dust can quickly fall and be collected into the collection bag through the cyclone collection cover. The dust and slag collection bag is a breathable cloth bag.

[0011] Furthermore, the material loading platform includes a frame. A number of diamond-shaped bearing bars are arranged on the upper end of the platform frame at equal intervals. A diamond-shaped cover plate is arranged on the upper end of the diamond-shaped bearing bars. The included angle between adjacent sides of the diamond-shaped bearing bars is 60°. A number of through gaps are evenly formed on the surface of the diamond-shaped cover plate. The width of the gaps is less than 2 mm, which is used to block large-sized welding slag from splashing and rebounding. The width of the gaps is strictly controlled within 2 mm, allowing small molten particles of welding slag (particle size < 2 mm) to fall naturally, while intercepting solid splashes with a particle size > 3 mm. The diamond-shaped bearing bars are arranged in a cross pattern at a 60° angle to form triangular stable units, which are more firm and neater in arrangement. The cover plate is movable, facilitating taking and cleaning.

[0012] Furthermore, the miscellaneous material collection vehicle includes a box body. Moving wheels are arranged at the four corners of the bottom of the box body. A pulling handle is arranged on one side of the upper end of the box body, and a tail-end fixed connecting piece is arranged on the other side of the upper end of the box body.

[0013] Furthermore, the diamond-shaped cover plate is made of high-temperature resistant material.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. By adopting a double-stage adsorption system (the bottom welding slag adsorption device is linked with the welding slag suction device), combining magnetic adsorption and negative pressure pneumatic suction, magnetic metal debris (such as stainless steel) and non-magnetic dust (such as aluminum chips) can be captured simultaneously. The slide rail design of the magnetic adsorption block supports quick disassembly, and the dust extraction connection port realizes particle classification treatment through hierarchical filtration (cyclone separation + magnetic pole adsorption ring plate), improving the efficiency of welding slag collection. It follows the synchronous displacement of the laser cutting head to achieve the effect of local welding slag adsorption, adsorbing and collecting the splashing welding slag immediately during laser cutting, thus ensuring the environment in the workshop.

[0016] 2. The welding slag suction device adopts a mirror double-adsorption structure (the first and second adsorption devices at the upper end). By covering both sides, the single-sided blind area is eliminated. No matter the cutting direction (left → right or right → left) or the trajectory (arc, corner), bidirectional interception of molten slag can be achieved. The semi-closed diversion cavity design of the protective shell reduces external air flow interference, ensuring adsorption stability. The device supports independent start-stop and suction adjustment, with higher flexibility.

[0017] 3. The original "centrifugal separation - magnetic separation adsorption - cyclone filtration" three - stage treatment process. The magnetic pole adsorption ring plate and the plug - and - play replacement box are designed to facilitate the rapid cleaning of metal debris. The sealing cover uses a silica gel ring and a quick - lock buckle. When replacing, it maintains the negative pressure of the system to avoid dust leakage. The protective shell uses a high - temperature - resistant ceramic coating or a double - layer heat - insulation structure, with a surface temperature lower than 50 °C to prevent operators from being scalded. The diamond - shaped cover plate is made of movable high - temperature - resistant material, with a gap design of <2 mm. It can block the splash and rebound of large particles and allow small particles to fall naturally. It can be directly disassembled and cleaned during maintenance;

[0018] 4. The loading platform uses a 60° diamond - shaped load - bearing strip and a triangular stable unit arrangement to improve the load - bearing strength. The conical flared leak holes and the pulse back - blowing system in the cyclone filtration chamber reduce air flow abrasion and extend the life of the magnetic pole ring plate, and are compatible with non - magnetic materials (only relying on centrifugal separation after turning off the magnetic adsorption function); BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the horizontal and vertical moving cutting device of the present invention;

[0021] Figure 3 It is a schematic diagram of the bottom welding slag adsorption device of the present invention;

[0022] Figure 4 It is a schematic diagram of the welding slag suction device of the present invention;

[0023] Figure 5 It is a schematic diagram of the first upper - end welding slag adsorption device of the present invention;

[0024] Figure 6 It is a schematic diagram of the cyclone welding slag adsorption and filtration device of the present invention;

[0025] Figure 7 It is a schematic diagram of the filtration device of the present invention;

[0026] Figure 8 It is a schematic diagram of the loading platform of the present invention;

[0027] Figure 9 It is a schematic diagram of the miscellaneous material collection vehicle of the present invention;

[0028] In the figure: 1 - laser bed, 2 - horizontal and vertical moving cutting device, 3 - welding slag suction device, 4 - loading platform, 5 - miscellaneous material collection vehicle, 6 - floor feet, 21 - moving cross beam, 22 - horizontal gear and rack motor moving mechanism, 23 - vertical gear and rack motor moving mechanism, 24 - bottom welding slag adsorption device, 11 - dust extraction pipe connection port, 241 - fixed connection cross beam arm, 242 - inclined triangular welding slag adsorption box, 243 - magnetic adsorption block, 244 - grille, 245 - dust extraction connection port, 31 - Z - direction moving cutting device, 32 - upper first welding slag adsorption device, 33 - upper second welding slag adsorption device, 34 - protective shell, 321 - fixed box body, 322 - dust suction device, 323 - filtering device, 324 - cyclone welding slag adsorption and filtering device, 325 - inner - folded welding slag baffle, 3241 - plug - in replacement box, 3242 - sealing cover, 3243 - cyclone filtering bin, 3244 - welding slag adsorption port, 3245 - first air extraction pipe connection port, 3246 - partition ring plate, 3247 - leakage hole magnetic pole adsorption ring plate, 3248 - second - layer magnetic pole adsorption ring plate, 3231 - filtering box, 3232 - dust and welding slag collection bag, 3233 - cyclone collection cover, 3234 - second air extraction pipeline connection port, 3235 - dust suction device pipeline connection port, 41 - frame, 42 - diamond - shaped bearing strip, 43 - diamond - shaped cover plate, 51 - box body, 52 - moving wheel, 53 - pulling handle, 54 - tail - end fixed connecting piece. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments 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.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0031] Combine Figures 1 - 2As shown, a laser cutting machine with local slag cleaning includes a laser bed 1. At the upper end of the laser bed 1, there is a horizontal and vertical movement cutting device 2. One side of the horizontal and vertical movement cutting device 2 is fixedly connected with a slag suction device 3. At the upper end of the laser bed 1, there is a loading platform 4. At the bottom of the loading platform 4, there are several miscellaneous material collection carts 5. At the bottom of the laser bed 1, several floor feet 6 are arranged at equal intervals; The horizontal and vertical movement cutting device 2 includes a moving crossbeam 21. At the bottom of one side of the moving crossbeam 21, there is a horizontal gear and rack motor moving mechanism 22. At the upper end of the moving crossbeam 21, there is a vertical gear and rack motor moving mechanism 23. At the bottom of the moving crossbeam 21, fixedly connected to both sides of the feet of the moving crossbeam 21, there is a bottom slag adsorption device 24. On both sides of the moving crossbeam 21, sliding mechanisms are synchronously arranged for the horizontal movement of the horizontal and vertical movement cutting device 2. On one side of the tail of the laser bed 1, there is a bottom dust extraction pipe connection port 11;

[0032] Combined with Figure 3 Figure 9As shown in the figure, the bottom slag adsorption device 24 includes a fixedly connected crossbeam arm 241, which is fixedly connected to both sides of the bottom of the moving crossbeam 21. One end of the fixedly connected crossbeam arm 241 is fixedly connected with a number of inclined triangular slag adsorption boxes 242. Inside the inclined triangular slag adsorption box 242, a number of magnetic adsorption blocks 243 are arranged. On the upper end of the inclined triangular slag adsorption box 242, a grille 244 is provided. On the back of the inclined triangular slag adsorption box 242, a dust extraction connection port 245 is provided. The magnetic adsorption block 243 is a detachable neodymium iron boron permanent magnet, and its surface is covered with a high-temperature resistant silica gel layer 2431. And the magnetic adsorption block 243 is connected to the inner wall of the inclined triangular slag adsorption box 242 through a slide rail structure. For the double-stage adsorption system, the up-and-down linkage design of the bottom slag adsorption device and the slag suction device realizes the combination of real-time local cleaning in the cutting area and large-range negative pressure suction. Compared with the traditional single-nozzle equipment, the slag cleaning efficiency is greatly improved. The magnetic and pneumatic composite adsorption in the inclined triangular slag adsorption box, the cooperation between the magnetic adsorption block and the dust extraction connection port can capture magnetic metal debris and non-magnetic dust at the same time, with stronger adaptability, compatible with the cutting of various materials such as stainless steel and aluminum alloy; The slag suction device 3 includes a Z-direction moving cutting device 31. One side of the lower end of the Z-direction moving cutting device 31 is fixedly connected with an upper first slag adsorption device 32, and the other side of the lower end of the Z-direction moving cutting device 31 is fixedly connected with an upper second slag adsorption device 33. The upper first slag adsorption device 32 and the upper second slag adsorption device 33 present a mirror structure, and a protective shell 34 is provided at the outer end. The mirror double adsorption covers without dead angles. Whether the cutting path direction is left → right or right → left, it can effectively capture the flying slag and realize the two-way interception of the molten slag on complex trajectories such as corners and arcs, eliminating the one-sided adsorption blind area. The mirror double adsorption device can be independently started and stopped or the suction force can be adjusted according to the cutting position. The protective shell wraps the outside of the adsorption device to form a semi-closed diversion cavity to block the interference of external air turbulence such as workshop ventilation on the slag suction air flow. The protective shell adopts a high-temperature resistant ceramic coating or a double-layer heat insulation structure to ensure that the outer shell temperature is lower than 50°C to avoid scalding the operator; The upper first slag adsorption device 32 includes a fixed box body 321. In the upper corner of the inner part of the fixed box body 321, a dust suction device 322 is arranged. Adjacent to one side of the dust suction device 322, a filtering device 323 is provided. In the center of the lower end of the inner part of the fixed box body 321, a cyclone slag adsorption and filtering device 324 is arranged. At the bottom of the fixed box body 321, an inwardly folded slag baffle 325 is provided. The dust suction device 322 and the filtering device 323 are connected to each other through a pipeline. The filtering device 323 and the cyclone slag adsorption and filtering device 324 are connected to each other through a pipeline. Through the hierarchical treatment of the dust suction device, the filtering device and the cyclone slag adsorption and filtering device, the comprehensive adsorption of dust can be achieved. Whether it is large metal particles or fine dust, comprehensive adsorption can be carried out;The cyclone welding slag adsorption and filtration device 324 includes a plug-in replacement box 3241. A sealing cover 3242 is provided at the upper end of the plug-in replacement box 3241. A cyclone filtration chamber 3243 is fixedly connected to the lower end of the sealing cover 3242. Leak holes are evenly arranged at equal intervals on the upper surface of the cyclone filtration chamber 3243 for the ejection of welding slag. A welding slag adsorption port 3244 is provided at the lower end of the cyclone filtration chamber 3243. A first air extraction pipe connection port 3245 is provided at the upper end of the cyclone filtration chamber 3243. A partition ring plate 3246 is fixed to the outer bottom circle of the cyclone filtration chamber 3243 at the bottom of the plug-in replacement box 3241, which is used for the blocking and storage of the falling back of welding slag after the welding slag is ejected. A layer of leak hole magnetic pole adsorption ring plate 3247 is provided on the outer side of the cyclone filtration chamber 3243 at the lower end of the sealing cover 3242. A second layer of magnetic pole adsorption ring plate 3248 is provided on the outer circle of the layer of leak hole magnetic pole adsorption ring plate 3247. The dust-containing air flow tangentially enters the cyclone filtration chamber from the welding slag adsorption port. Coarse-grained welding slag is ejected through the leak holes after hitting the chamber wall due to centrifugal force. A layer of leak hole magnetic pole adsorption ring plate is provided in the area of the leak holes where the welding slag is ejected to preferentially adsorb magnetic metal debris and reduce the risk of leak hole blockage. The second layer of magnetic pole adsorption ring plate expands the magnetic field coverage range to capture escaping micron-sized metal dust. The overall metal debris capture rate is increased by more than 40%. The relatively light welding slag falls along the inner side of the magnetic pole adsorption ring plate after separation and is blocked by the partition ring plate and guided to the bottom of the plug-in replacement box, facilitating cleaning and collection. The sealing cover adopts a silicone rubber sealing ring and a quick-lock buckle design to maintain the system negative pressure when replacing the plug-in box and prevent dust leakage. For non-magnetic materials such as aluminum and copper, the magnetic pole adsorption function can be turned off or replaced with a non-magnetic leak hole ring plate, relying only on centrifugal separation. The leak holes adopt a conical flared design to slow down the wear of the air flow on the hole edge. A pulse back-blowing system can be selectively connected to the first air extraction pipe connection port to regularly remove the fine dust attached to the magnetic pole ring plate. The filtration device 323 includes a filtration box 3231. A dust and welding slag collection bag 3232 is arranged inside the filtration box 3231. A cyclone collection cover 3233 is provided at the upper end of the filtration box 3231. A second air extraction pipe connection port 3234 is provided at one side end of the cyclone collection cover 3233. A dust suction device pipe connection port 3235 is provided at the bottom of the filtration box 3231. The collected fine iron filings and dust can quickly fall into the collection bag through the cyclone collection cover. The dust and welding slag collection bag is a breathable cloth bag;The material loading platform 4 includes a frame 41. At the upper end of the platform frame 41, a number of diamond-shaped bearing bars 42 are arranged evenly and equidistantly. A diamond-shaped cover plate 43 is provided at the upper end of the diamond-shaped bearing bars 42. The included angle between adjacent sides of the diamond-shaped bearing bars 42 is 60°. A number of through slits are evenly formed on the surface of the diamond-shaped cover plate 43. The width of the slits is less than 2 mm, which is used to block large-sized welding slag flying and rebounding. The width of the slits is strictly controlled within 2 mm, allowing molten small-particle welding slag with a particle size < 2 mm to fall naturally, and at the same time intercepting solid splashes with a particle size > 3 mm. The diamond-shaped bearing bars are arranged in a cross pattern with a 60° included angle to form triangular stable units, which are more firm and neater in arrangement. The cover plate is movable, facilitating taking and cleaning; The miscellaneous material collection vehicle 5 includes a box body 51. At the four corners of the bottom of the box body 51, moving wheels 52 are provided respectively. At one side of the upper end of the box body 51, a pulling handle 53 is provided. At the other side of the upper end of the box body 51, a tail-end fixed connecting part 54 is provided; The diamond-shaped cover plate 43 is made of high-temperature resistant material.;

[0033] During operation, a large amount of welding slag will be generated during the cutting process. In order to achieve local welding slag cleaning, the equipment is equipped with a bottom welding slag adsorption device 24. The structure of the bottom welding slag adsorption device includes an inclined triangular welding slag adsorption box 242, which is internally provided with magnetic adsorption blocks 243. These magnetic adsorption blocks are fixed in the welding slag adsorption box through a slide rail structure. The magnetic adsorption blocks can effectively adsorb metal particles such as iron filings, and are coated with a high-temperature resistant silica gel layer on the surface, having high-temperature resistant performance. The welding slag adsorption box is connected to a negative pressure suction system through a dust extraction connection port 245, capable of jointly capturing welding slag and dust. The welding slag suction device 3 includes a Z-direction moving cutting device 31 and a double adsorption system. The upper first welding slag adsorption device 32 and the upper second welding slag adsorption device 33 achieve all-round welding slag capture through a mirror structure, avoiding one-sided adsorption blind areas. Whether the cutting path direction is from left to right or from right to left, the welding slag adsorption device can effectively capture flying welding slag. The protective shell 34 wraps the adsorption device to form a semi-closed diversion cavity, ensuring smooth air flow and avoiding interference with the workshop ventilation. The adsorption device is connected to a grading treatment system at the back, including a dust suction device, a filtering device, and a cyclone welding slag adsorption and filtering device 324. The cyclone filtering chamber uses centrifugal force to throw out coarse-grained welding slag and adsorbs metal debris through a magnetic pole adsorption ring plate, further improving the welding slag capture efficiency. Welding slag made of non-magnetic materials is processed through centrifugal separation, avoiding the risk of leakage hole blockage.

[0034] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0035] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser cutting machine with local welding slag cleaning, comprising a laser bed (1), characterized in that: At the upper end of the laser bed (1), a transverse and longitudinal moving cutting device (2) is provided. On one side of the transverse and longitudinal moving cutting device (2), a welding slag suction device (3) is fixedly connected. At the upper end of the laser bed (1), a loading platform (4) is provided. At the bottom of the loading platform (4), a number of miscellaneous material collection carts (5) are provided. At equal intervals at the bottom of the laser bed (1), a number of floor feet (6) are arranged. The transverse and longitudinal moving cutting device (2) includes a moving cross beam (21). At the bottom of one side of the moving cross beam (21), a transverse gear-rack motor moving mechanism (22) is provided. At the upper end of the moving cross beam (21), a longitudinal gear-rack motor moving mechanism (23) is provided. At the bottom of the two feet on both sides of the bottom of the moving cross beam (21) which is fixedly connected to the lower end of the moving cross beam (21), a bottom welding slag adsorption device (24) is provided. On both sides of the moving cross beam (21), a sliding mechanism is synchronously provided for the transverse movement of the transverse and longitudinal moving cutting device (2). On one side of the tail of the laser bed (1), a bottom dust extraction pipe connection port (11) is provided.

2. The laser cutting machine with local welding slag cleaning according to claim 1, characterized in that: The bottom welding slag adsorption device (24) includes a fixedly connected cross beam arm (241). The fixedly connected cross beam arm (241) is fixedly connected to both sides of the bottom of the moving cross beam (21). At one side end of the fixedly connected cross beam arm (241), a number of inclined triangular welding slag adsorption boxes (242) are fixedly connected. Inside the inclined triangular welding slag adsorption boxes (242), a number of magnetic adsorption blocks (243) are provided. At the upper end of the inclined triangular welding slag adsorption boxes (242), a grille (244) is provided. At the back of the inclined triangular welding slag adsorption boxes (242), a dust extraction connection port (245) is provided. The magnetic adsorption blocks (243) are detachable neodymium iron boron permanent magnets, and a high-temperature resistant silica gel layer (2431) is covered on their surfaces. And the magnetic adsorption blocks (243) are connected to the inner wall of the inclined triangular welding slag adsorption boxes (242) through a slide rail structure.

3. The laser cutting machine with local welding slag cleaning according to claim 2, wherein: The welding slag suction device (3) includes a Z-direction moving cutting device (31). At one side of the lower end of the Z-direction moving cutting device (31), an upper first welding slag adsorption device (32) is fixedly connected. At the other side of the lower end of the Z-direction moving cutting device (31), an upper second welding slag adsorption device (33) is fixedly connected. The upper first welding slag adsorption device (32) and the upper second welding slag adsorption device (33) present a mirror image structure, and a protective shell (34) is provided at the outer end.

4. A laser cutting machine with local welding slag cleaning according to claim 3, characterized in that: The first welding slag adsorption device (32) at the upper end includes a fixed box body (321). At a corner of the upper end inside the fixed box body (321), a dust suction device (322) is provided. Adjacent to one side of the dust suction device (322), a filtering device (323) is provided. At the center of the lower end inside the fixed box body (321), a cyclone welding slag adsorption and filtering device (324) is provided. At the bottom of the fixed box body (321), an inward-folded welding slag baffle (325) is provided. The dust suction device (322) and the filtering device (323) are connected to each other through a pipeline. The filtering device (323) and the cyclone welding slag adsorption and filtering device (324) are connected to each other through a pipeline.

5. A laser cutting machine with local welding slag cleaning according to claim 4, characterized in that: The cyclone welding slag adsorption and filtering device (324) includes a plug-in replacement box (3241). At the upper end of the plug-in replacement box (3241), a sealing cover (3242) is provided. At the lower end of the sealing cover (3242), a cyclone filtering chamber (3243) is fixedly connected. On the upper surface of the cyclone filtering chamber (3243), leakage holes are evenly arranged at equal intervals for the ejection of welding slag. At the lower end of the cyclone filtering chamber (3243), a welding slag adsorption port (3244) is provided. At the upper end of the cyclone filtering chamber (3243), a first air extraction pipe connection port (3245) is provided. At the outer circle of the bottom of the cyclone filtering chamber (3243), a partition ring plate (3246) is fixed to the bottom of the plug-in replacement box (3241) for the blocking and storage of the falling-back of welding slag after ejection. At the lower end of the sealing cover (3242) and outside the outer circle of the cyclone filtering chamber (3243), a layer of leakage hole magnetic pole adsorption ring plate (3247) is provided. Outside the outer circle of the layer of leakage hole magnetic pole adsorption ring plate (3247), a second-layer magnetic pole adsorption ring plate (3248) is provided.

6. The laser cutting machine with local welding slag cleaning according to claim 5, characterized in that: The filtering device (323) includes a filtering box (3231). Inside the filtering box (3231), a dust and welding slag collection bag (3232) is provided. At the upper end of the filtering box (3231), a cyclone collection cover (3233) is provided. At one side end of the cyclone collection cover (3233), a second air extraction pipeline connection port (3234) is provided. At the bottom of the filtering box (3231), a dust suction device pipeline connection port (3235) is provided.

7. A laser cutting machine with local welding slag cleaning according to claim 6, characterized in that: The loading platform (4) includes a frame (41). On the upper end of the platform frame (41), a number of diamond-shaped bearing bars (42) are evenly arranged at equal intervals. At the upper end of the diamond-shaped bearing bars (42), a diamond-shaped cover plate (43) is provided. The included angle between adjacent side edges of the diamond-shaped bearing bars (42) is 60°. On the surface of the diamond-shaped cover plate (43), a number of through gaps are evenly opened. The width of the gaps is less than 2 mm for blocking large-sized welding slag from splashing and rebounding.

8. A laser cutting machine with local welding slag cleaning according to claim 7, characterized in that: The miscellaneous material collection vehicle (5) includes a box body (51). At the four corners of the bottom of the box body (51), moving wheels (52) are provided. At one side of the upper end of the box body (51), a pulling handle (53) is provided. At the other side of the upper end of the box body (51), a tail-end fixed connecting piece (54) is provided.

9. The laser cutting machine with local welding slag cleaning according to claim 8, characterized in that: The diamond-shaped cover plate (43) is made of high-temperature resistant material.

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