A water-cooled bed of a laser cutting machine

Abstract

The present invention relates to a water-cooled bed of a laser cutting machine, which belongs to the technical field of laser cutting machine manufacturing. The laser cutting machine comprises a laser cutting head and a processing bed. A movable crossbeam is provided between the laser cutting head and the processing bed. The movable crossbeam is connected to the processing bed and the laser cutting head by transmission. The processing bed comprises a mounting beam, a support beam and a rack assembly. A support leg connector is provided at the bottom of the mounting beam. The processing bed also comprises a water-cooling mechanism, a dust reduction spray mechanism and a dust removal mechanism. The water-cooling mechanism comprises a plurality of radiators, two groups of U-shaped circulation pipes, a water tank and a water pump. The dust reduction spray mechanism comprises a plurality of spray assemblies, two groups of material receiving boxes and a plurality of dust isolation assemblies. The dust removal mechanism comprises two groups of square pipe ducts, two groups of connecting ports and a plurality of opening and closing assemblies. The present invention as a whole has the advantages of convenient heat dissipation of the bed and convenient dust removal.

Description

Technical Field

[0001] The invention relates to a water-cooled bed of a laser cutting machine, belonging to the technical field of laser cutting machines. Background Art

[0002] A laser cutting machine uses a high-power-density laser beam to cut materials. It focuses the laser beam, bringing the workpiece surface to its melting or boiling point. High-pressure gas simultaneously blows away the molten or vaporized material, achieving precise cutting. Laser cutting machines offer advantages such as high precision, high speed, smooth cuts, and a minimal heat-affected zone. They are widely used in processing a variety of materials, including metals and non-metals, in industries such as automotive, machinery, and electronics. Furthermore, their high degree of automation and low processing costs make them an indispensable component of modern manufacturing.

[0003] In traditional laser cutting machine designs, the processing bed usually uses a fixed or air cooling system to maintain the stability of the bed during the cutting process. However, these traditional methods have certain shortcomings. For example, the fixed bed cannot dissipate heat effectively. Long-term operation can easily cause the bed temperature to rise and its volume to increase, pushing the laser head beam to open and causing it to tear, thereby affecting the cutting accuracy and equipment life. Due to its limited cooling efficiency, the air cooling system often cannot meet the high cooling performance requirements of high-power laser cutting machines, leading to heat accumulation problems. At the same time, dust flying everywhere during the processing process can easily pollute the working environment. The flying dust can even affect the accuracy of the laser, resulting in an increase in the number of defective products. Summary of the Invention

[0004] In view of the defects existing in the above prior art, the present invention provides a water-cooled bed of a laser cutting machine, which solves the problems that the common laser cutting machine bed has poor heat dissipation effect and is difficult to remove dust.

[0005] The objective of the present invention is achieved through the following technical solutions, including a laser cutting head and a processing bed, a movable crossbeam is provided between the laser cutting head and the processing bed, the movable crossbeam and the processing bed and the laser cutting head are all connected by transmission, the processing bed includes a mounting beam, a support beam and a rack assembly, a support leg connector is provided at the bottom of the mounting beam, the processing bed also includes a water cooling mechanism, a dust reduction spray mechanism and a dust removal mechanism, the water cooling mechanism includes several radiators, two sets of U-shaped circulation pipes, a water tank and a water pump, the dust reduction spray mechanism includes several spray assemblies, two sets of material receiving boxes and several dust isolation assemblies, the dust removal mechanism includes two sets of square pipe ducts, two sets of connecting ports and several opening and closing assemblies.

[0006] Furthermore, the support beam includes a main beam, and a number of load-bearing beams are provided on both sides of the main beam. The two ends of the load-bearing beam are respectively connected to the main beam and the square tube culvert by screws. The main beam and the bottom of the square tube culvert are both provided with a number of load-bearing connecting parts and are connected by screws. The main beam and the load-bearing beam jointly support the rack assembly.

[0007] Furthermore, the radiator includes a heat conduction plate, one side of the heat conduction plate is fitted with the load-bearing beam, and the other side of the heat conduction plate is fixed with a plurality of columnar heat conduction fins, a water storage box is provided on the outside of the heat conduction plate, the heat conduction plate is embedded in the side of the water storage box and is sealed and connected, the heat conduction fins pass through the outer wall of the water storage box and are inserted into the interior thereof, a square mounting hole is provided on the outside of the water storage box, both ends of the square mounting hole are provided with curved connecting pipes and are connected through pipe fittings, the other end of the curved connecting pipe is connected to the U-shaped circulation pipe through a pipe fitting, a connecting plate is fixed with a connecting plate on the top and bottom of the water storage box, the connecting plate is connected to the load-bearing beam by screws, after the temperature of the load-bearing beam is affected by the laser and rises, the heat is transferred to the water inside the water storage box through the heat conduction plate and the heat conduction fins, and the cooling water enters and exits the water storage box through the curved connecting pipe.

[0008] Furthermore, the spray assembly includes a mounting shell and an atomizing head. The mounting shell is sealed and connected to the square mounting hole. The atomizing head is connected to the water storage box through a pipeline. The nozzle of the atomizing head is designed to be oblique. The atomizing head draws cooling water from the inside of the water storage box and sprays it obliquely. The tiny water droplets wrap around the dust formed during laser cutting, increase the weight and make the dust fall, which can prevent the dust from flying everywhere.

[0009] Furthermore, a plurality of trapezoidal slow-flow belts are fixedly provided on the inner side of the material receiving box, and a gap is provided between the two ends of the trapezoidal slow-flow belts and the inner wall of the material receiving box. The material receiving box and the load-bearing beam are fixed by angle irons and screws. The width of the material receiving box is greater than the width of the spray assembly. The U-shaped circulation pipe is connected to the material receiving box through a bracket. A square through hole is provided on the inner side of one end of the material receiving box. A filter is provided on the inner side of the square through hole and is connected by a snap. The trapezoidal slow-flow belt can slow down the flow rate of water in the material receiving box to prevent the water flow from driving dust to accumulate in the dust isolation assembly and causing blockage. At the same time, the gap on both sides will not affect the water flow when the water flow is less. Part of the dust-containing water droplets generated after the spray assembly is sprayed falls into the material receiving box, and the remaining splashes are sucked away by the dust removal mechanism.

[0010] Furthermore, the water tank is located at the bottom of the receiving box and is connected by screws, two square through holes are provided on the top of the water tank and are connected to the square through holes, two partition plates are fixedly provided in the middle of the two square through holes and are fixedly connected to the water tank, one end of the two partition plates is tightly fitted with the inner wall of the water tank, and a distance is provided between the other end of the two partition plates and the inner wall of the water tank, water inlet and water outlet are respectively provided on both sides of the water tank and are sealed by valves, the water in the water tank is sent to the radiator through a U-shaped circulation pipe to dissipate heat to the load-bearing beam, and part of the hot water is sprayed out and cooled and falls back into the receiving box, filtered through the filter and then returns to the water tank to complete the circulation, and the partition plate can extend the distance from the water falling from the receiving box to the water pump.

[0011] Furthermore, the water pump is connected to the outside of the water tank by screws, the water pump input end passes through the side wall of the water tank, a filter head is provided on the outside of the water pump input end, the filter head is located between the two partition plates, and the water pump output end is provided with a T-shaped pipe fitting, the T-shaped pipe fitting is connected to one end of the two U-shaped circulation pipes, and the other end of the two U-shaped circulation pipes is connected to the water tank through a pipe fitting, and the water pump pumps the water in the water tank into the U-shaped circulation pipe, so that the cooling water is distributed in the water cooling mechanism and the dust reduction spray mechanism.

[0012] Furthermore, the dust isolation assembly includes a partition plate, which is fixedly connected to the material receiving box, and a plurality of circular through holes are provided on the partition plate. An inverted U-shaped insert is provided on the outer side of the partition plate, and square holes are provided on both sides of the inverted U-shaped insert. A filter is installed on the inner side of the square hole, and the circular through holes are all located within the range of the square holes. The inverted U-shaped insert is plugged into the partition plate, and the dust isolation assembly is located directly below the dust reduction spray mechanism. The water-wrapped dust formed after spraying falls between the two adjacent partition plates. The inverted U-shaped insert can filter the water flowing in the material receiving box to prevent dust from falling into the water tank along the direction of the water flow and causing accumulation.

[0013] Furthermore, the connection port is located at one end of the square tube duct, and the connection port is connected to an external dust suction fan. A plurality of square windows are provided on the inner wall of the square tube duct, and the opening and closing assembly is located in the square window. The dust suction fan absorbs dust near the square window through the square tube duct to prevent dust from splashing randomly.

[0014] Furthermore, the opening and closing assembly includes an installation frame, a closed door is provided on the inner side of the installation frame, the closed door is slidably connected to the installation frame, a hydraulic telescopic rod is provided at one end of the closed door, the hydraulic telescopic rod is connected to the inner side of the square tube duct by screws, the output end of the hydraulic telescopic rod is connected to the closed door by screws, and the pipeline of the input end of the hydraulic telescopic rod is connected to the external equipment through the connecting port. After the closed door is opened, the dust near the square window is sucked into the square tube duct and is sucked out by the fan through the connecting port.

[0015] In summary, the present invention has the following advantages compared with the prior art:

[0016] 1. In the present invention, the cooling water in the water tank enters the water storage box. After the load-bearing beam is affected by the laser and its temperature rises, the heat is transferred to the water inside the water storage box through the heat conduction plate and the heat conduction fins. During the water circulation process, the load-bearing beam is continuously cooled to prevent the load-bearing beam from expanding due to temperature rise and causing damage to the bed and movable beam.

[0017] 2. In the present invention, the hot water in the water storage box is sprayed obliquely through the dust reduction spray mechanism. The fine water droplets wrap the dust formed during laser cutting, increase the weight and make the dust fall, which can prevent the dust from flying around and affecting the working environment. After being sprayed out, the hot water cools down and falls back into the receiving box. After being filtered by the filter, it returns to the water tank to complete the water cooling cycle, which prevents the water temperature from not being able to dissipate and affecting the water cooling effect on the load-bearing beam;

[0018] 3. In the present invention, after the closed door is opened, the dust near the square window is sucked into the square tube duct and then sucked out by the fan through the connecting port, thus preventing the dust from splashing and affecting the working environment.

[0019] 4. In the present invention, the dust isolation component is located directly below the dust reduction spray mechanism. The water-wrapped dust formed after spraying falls between two adjacent partitions. The inverted U-shaped insert can filter the water flowing in the material box to prevent the dust from falling into the water tank along the direction of the water flow, causing accumulation and precipitation that is difficult to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the local structure of the machining bed of the present invention;

[0022] Figure 3 This is a schematic diagram of the local structure of the support beam of the present invention;

[0023] Figure 4 It is a schematic diagram of the partial structure of the water cooling mechanism of the present invention;

[0024] Figure 5This is an exploded view of the radiator structure of the present invention;

[0025] Figure 6 This is a schematic diagram of the partial structure of the water tank of the present invention;

[0026] Figure 7 This is a schematic diagram of the partial structure of the material receiving box of the present invention;

[0027] Figure 8 It is a schematic diagram of the partial structure of the dust removal mechanism of the present invention.

[0028] In the figure: 1-laser cutting head, 2-machining bed, 3-moving beam, 4-water cooling mechanism, 5-dust suppression spray mechanism, 6-dust removal mechanism;

[0029] 21-mounting beam, 22-support beam, 23-rack assembly, 24-support leg connector, 41-radiator, 42-U-shaped circulation pipe, 43-water tank, 44-water pump, 51-spray assembly, 52-material receiving box, 53-dust isolation assembly, 61-square pipe duct, 62-connection port, 63-opening and closing assembly;

[0030] 221-main beam, 222-load-bearing beam, 223-load-bearing connector, 411-heat conduction plate, 412-heat conduction fins, 413-water storage box, 414-square mounting hole, 415-curved connecting pipe, 416-connecting plate, 431-square through hole, 432-partition plate, 433-water inlet, 434-water outlet, 441-filter head, 442-T-type pipe fitting, 511-mounting shell, 512-atomizing head, 521-trapezoidal slow flow belt, 522-square through hole, 531-partition plate, 532-circular through hole, 533-inverted U-shaped insert, 534-square hole, 611-square window, 631-mounting frame, 632-enclosed door, 633-hydraulic telescopic rod. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described in detail below through specific embodiments, but the present invention is not limited to these embodiments.

[0032] Combine Figures 1 to 8The water-cooled bed of a laser cutting machine shown in the figure includes a laser cutting head 1 and a processing bed 2. A movable beam 3 is provided between the laser cutting head 1 and the processing bed 2. The movable beam 3 is connected to the processing bed 2 and the laser cutting head 1 by transmission. The processing bed 2 includes a mounting beam 21, a support beam 22 and a rack assembly 23. A support leg connector 24 is provided at the bottom of the mounting beam 21. The processing bed 2 also includes a water-cooling mechanism 4, a dust reduction spray mechanism 5 and a dust removal mechanism 6. The water-cooling mechanism 4 includes a number of radiators 41, two groups of U-shaped circulation pipes 42, a water tank 43 and a water pump 44. The dust reduction spray mechanism 5 includes a number of spray assemblies 51, two groups of material receiving boxes 52 and a number of dust isolation assemblies 53. The dust removal mechanism 6 includes two groups of square pipe ducts 61, two groups of connecting ports 62 and a number of opening and closing assemblies 63.

[0033] Combine Figure 2 、 Figure 3 As shown, the support beam 22 includes a main beam 221, and a plurality of load-bearing beams 222 are provided on both sides of the main beam 221. The two ends of the load-bearing beam 222 are respectively connected to the main beam 221 and the square tube culvert 61 by screws. The bottom of the main beam 221 and the square tube culvert 61 are both provided with a plurality of load-bearing connecting parts 223 and connected by screws. The main beam 221 and the load-bearing beam 222 jointly support the rack assembly 23.

[0034] Combine Figure 4 、 Figure 5 As shown, the radiator 41 includes a heat conducting plate 411, one side of the heat conducting plate 411 is in contact with the load-bearing beam 222, and a plurality of columnar heat conducting fins 412 are fixed on the other side of the heat conducting plate 411. A water storage box 413 is provided on the outside of the heat conducting plate 411. The heat conducting plate 411 is embedded in the side of the water storage box 413 and is sealed and connected. The heat conducting fins 412 pass through the outer wall of the water storage box 413 and are inserted into the inside thereof. A square mounting hole 414 is provided on the outside of the water storage box 413, and both ends of the square mounting hole 414 are provided with The curved connecting pipe 415 is connected by a pipe fitting, and the other end of the curved connecting pipe 415 is connected to the U-shaped circulation pipe 42 by a pipe fitting. The top and bottom of the water storage box 413 are fixed with connecting plates 416, and the connecting plates 416 are connected to the load-bearing beam 222 by screws. After the load-bearing beam 222 is affected by the laser and the temperature rises, the heat is transferred to the water inside the water storage box 413 through the heat conduction plate 411 and the heat conduction fins 412. The cooling water enters and exits the water storage box 413 through the curved connecting pipe 415.

[0035] Combine Figure 4 、 Figure 5As shown, the spray assembly 51 includes a mounting shell 511 and an atomizing head 512. The mounting shell 511 is sealed and connected to the square mounting hole 414. The atomizing head 512 is connected to the water storage box 413 through a pipeline. The nozzle of the atomizing head 512 is designed to be oblique. The atomizing head 512 draws cooling water from the inside of the water storage box 413 and sprays it obliquely. The tiny water droplets wrap around the dust formed during laser cutting, increase the weight and make the dust fall, which can prevent the dust from flying everywhere.

[0036] Combine Figure 4 、 Figure 7 As shown, a number of trapezoidal slow-flow belts 521 are fixedly provided on the inner side of the material receiving box 52, and a gap is provided between the two ends of the trapezoidal slow-flow belts 521 and the inner wall of the material receiving box 52. The material receiving box 52 is fixed to the load-bearing beam 222 by angle irons and screws. The width of the material receiving box 52 is greater than the width of the spray assembly 51. The U-shaped circulation pipe 42 is connected to the material receiving box 52 through a bracket. A square through hole 522 is provided on the inner side of one end of the material receiving box 52. A filter is provided on the inner side of the square through hole 522 and is connected by a snap. The trapezoidal slow-flow belt 521 can slow down the flow rate of water in the material receiving box 52 to prevent the water flow from driving dust to accumulate in the dust isolation assembly 53 and causing blockage. At the same time, the gap on both sides will not affect the water flow when the water flow is small. Part of the dust-containing water droplets generated after the spray assembly 51 sprays falls into the material receiving box 52, and the remaining splashes are sucked away by the dust removal mechanism 6.

[0037] Combine Figure 4 、 Figure 6 As shown, the water tank 43 is located at the bottom of the receiving box 52 and is connected by screws. Two square through holes 431 are provided on the top of the water tank 43 and are connected to the square through holes 522. Two partition plates 432 are fixedly provided in the middle of the two square through holes 431 and are fixedly connected to the water tank 43. One end of the two partition plates 432 is tightly fitted with the inner wall of the water tank 43, and there is a distance between the other end of the two partition plates 432 and the inner wall of the water tank 43. Water inlet 433 and water outlet 434 are respectively provided on both sides of the water tank 43 and are sealed by valves. The water in the water tank 43 is sent to the radiator 41 through the U-shaped circulation pipe 42 to dissipate heat for the load-bearing beam 222. Part of the hot water is sprayed out and then cooled and falls back into the receiving box 52. After being filtered by the filter, it returns to the water tank 43 to complete the cycle. The partition plate 432 can extend the distance from the water falling from the receiving box 52 to the water pump 44.

[0038] Combine Figure 4 、 Figure 6As shown, the water pump 44 is connected to the outside of the water tank 43 by screws, the input end of the water pump 44 passes through the side wall of the water tank 43, and a filter head 441 is provided on the outside of the input end of the water pump 44. The filter head 441 is located between the two partition plates 432, and a T-shaped pipe fitting 442 is provided at the output end of the water pump 44. The T-shaped pipe fitting 442 is connected to one end of the two U-shaped circulation pipes 42, and the other ends of the two U-shaped circulation pipes 42 are connected to the water tank 43 through pipe fittings. The water pump 44 pumps the water in the water tank 43 into the U-shaped circulation pipe 42, so that the cooling water is distributed in the water cooling mechanism 4 and the dust reduction spray mechanism 5.

[0039] Combine Figure 7 As shown, the dust isolation assembly 53 includes a partition plate 531, which is fixedly connected to the receiving box 52. A number of circular through holes 532 are provided on the partition plate 531, and an inverted U-shaped insert 533 is provided on the outside of the partition plate 531. Square holes 534 are provided on both sides of the inverted U-shaped insert 533, and a filter is installed on the inside of the square hole 534. The circular through holes 532 are all located within the range of the square hole 534. The inverted U-shaped insert 533 is plugged into the partition plate 531. The dust isolation assembly 53 is located directly below the dust reduction spray mechanism 5. The water-wrapped dust formed after spraying falls between the two adjacent partition plates 531. The inverted U-shaped insert 533 can filter the water flowing in the receiving box 52 to prevent dust from falling into the water tank 43 along the direction of the water flow and causing accumulation.

[0040] Combine Figure 3 、 Figure 8 As shown, the connection port 62 is located at one end of the square tube duct 61, and the connection port 62 is connected to the external dust suction fan. A plurality of square windows 611 are provided on the inner wall of the square tube duct 61, and the opening and closing assembly 63 is located in the square window 611. The dust suction fan absorbs dust near the square window 611 through the square tube duct 61 to prevent dust from splashing randomly.

[0041] Combine Figure 3 、 Figure 8 As shown, the opening and closing assembly 63 includes a mounting frame 631, a closed door 632 is provided on the inner side of the mounting frame 631, and the closed door 632 is slidably connected to the mounting frame 631. A hydraulic telescopic rod 633 is provided at one end of the closed door 632. The hydraulic telescopic rod 633 is connected to the inner side of the square tube duct 61 by screws. The output end of the hydraulic telescopic rod 633 is connected to the closed door 632 by screws, and the pipeline at the input end of the hydraulic telescopic rod 633 is connected to the external equipment through the connecting port 62. After the closed door 632 is opened, the dust near the square window 611 is sucked into the square tube duct 61 and is sucked out by the fan through the connecting port 62.

[0042] Working principle: When the scheme of the present invention is in use, the cooling water in the water tank enters the water storage box. After the temperature of the load-bearing beam is affected by the laser and rises, the heat is transferred to the water inside the water storage box through the heat conduction plate and the heat conduction fins. During the water circulation, the load-bearing beam is continuously cooled, and the hot water is sprayed out and then cooled and falls back into the receiving box. After being filtered by the filter, it returns to the water tank to complete the water cooling cycle, so as to avoid the water temperature from being unable to dissipate and affecting the water-cooling effect on the load-bearing beam. The hot water in the water storage box is sprayed obliquely through the dust reduction spray mechanism, and the tiny water droplets wrap the dust formed during laser cutting, increase the weight and make the dust fall. Part of the dust-containing water droplets fall between the two partition plates in the receiving box, and the inverted U-shaped insert can filter the dust flowing in the receiving box, and the filtered water flows into the water tank; the remaining splashed dust falls near the dust removal mechanism. After the closed door is opened, the dust near the square window is sucked into the square pipe duct and is sucked out by the fan through the connecting port.

[0043] The embodiments of the present invention are not limited to the above embodiments. Without departing from the spirit and scope of the present invention, ordinary technicians in this field can make various changes and improvements to the present invention in form and details, and these are all considered to fall within the scope of protection of the present invention.

Claims

1. A water-cooled bed of a laser cutting machine, comprising a laser cutting head and a processing bed, wherein a movable crossbeam is provided between the laser cutting head and the processing bed, wherein the movable crossbeam is connected to the processing bed and the laser cutting head by a transmission, wherein the processing bed comprises a mounting beam, a support beam, and a rack assembly, wherein a support leg connector is provided at the bottom of the mounting beam, and wherein: The processing bed also includes a water cooling mechanism, a dust suppression spray mechanism and a dust removal mechanism. The water cooling mechanism includes a plurality of cooling rows, two sets of U-shaped circulation pipes, a water tank and a water pump. The dust suppression spray mechanism includes a plurality of spray components, two sets of material receiving boxes and a plurality of dust isolation components. The dust removal mechanism includes two sets of square pipe ducts, two sets of connecting ports and a plurality of opening and closing components. The support beam includes a main beam, and a plurality of load-bearing beams are provided on both sides of the main beam. The two ends of the load-bearing beams are respectively connected to the main beam and the square tube culvert by screws. The main beam and the bottom of the square tube culvert are both provided with a plurality of load-bearing connectors and connected by screws. The radiator includes a heat conducting plate, one side of the heat conducting plate is fitted with the load-bearing beam, and a plurality of columnar heat conducting fins are fixedly provided on the other side of the heat conducting plate. A water storage box is provided on the outside of the heat conducting plate, and the heat conducting plate is embedded in the side of the water storage box and is sealed and connected. The heat conducting fins pass through the outer wall of the water storage box and are inserted into the inside thereof. A square mounting hole is provided on the outside of the water storage box, and both ends of the square mounting hole are provided with curved connecting pipes and are connected through pipe fittings. The other end of the curved connecting pipe is connected to the U-shaped circulation pipe through a pipe fitting. Connecting plates are fixed on the top and bottom of the water storage box, and the connecting plates are connected to the load-bearing beam by screws. The spray assembly includes a mounting shell and an atomizing head. The mounting shell is sealed and connected to the square mounting hole. The atomizing head is connected to the water storage box through a pipeline. The nozzle of the atomizing head is designed to be oblique.

2. The water-cooled bed of a laser cutting machine according to claim 1, characterized in that: A number of trapezoidal slow-flow belts are fixed on the inner side of the material receiving box, and a distance is provided between the two ends of the trapezoidal slow-flow belts and the inner wall of the material receiving box. The material receiving box and the load-bearing beam are fixed by angle irons and screws. The width of the material receiving box is greater than the width of the spray assembly. The U-shaped circulation pipe is connected to the material receiving box through a bracket. A square through hole is provided on the inner side of one end of the material receiving box, and a filter is provided on the inner side of the square through hole and is connected by a snap.

3. The water-cooled bed of a laser cutting machine according to claim 2, characterized in that: The water tank is located at the bottom of the receiving box and is connected by screws. Two square through holes are provided on the top of the water tank and are connected to the square through holes. Two partition plates are fixedly provided in the middle of the two square through holes and are fixedly connected to the water tank. One end of the two partition plates is tightly fitted with the inner wall of the water tank, and a distance is provided between the other end of the two partition plates and the inner wall of the water tank. A water inlet and a water outlet are respectively provided on both sides of the water tank and are sealed by a valve.

4. The water-cooled bed of a laser cutting machine according to claim 3, characterized in that: The water pump is connected to the outside of the water tank by screws, the water pump input end passes through the side wall of the water tank, a filter head is provided on the outside of the water pump input end, the filter head is located between the two partition plates, and a T-shaped pipe fitting is provided at the water pump output end, the T-shaped pipe fitting is connected to one end of the two U-shaped circulation pipes, and the other end of the two U-shaped circulation pipes is connected to the water tank through a pipe fitting.

5. The water-cooled bed of a laser cutting machine according to claim 4, characterized in that: The dust isolation assembly includes a partition plate, which is fixedly connected to the material receiving box. A plurality of circular through holes are provided on the partition plate. An inverted U-shaped insert is provided on the outer side of the partition plate. Square holes are provided on both sides of the inverted U-shaped insert. A filter is installed on the inner side of the square hole. The circular through holes are all located within the range of the square hole. The inverted U-shaped insert is plugged into the partition plate.

6. The water-cooled bed of a laser cutting machine according to claim 5, characterized in that: The connecting port is located at one end of the square tube duct, and the connecting port is connected to an external dust suction fan. A plurality of square windows are provided on the inner side wall of the square tube duct, and the opening and closing components are located in the square windows.

7. The water-cooled bed of a laser cutting machine according to claim 6, characterized in that: The opening and closing assembly includes an installation frame, a closed door is provided on the inside of the installation frame, the closed door is slidably connected to the installation frame, a hydraulic telescopic rod is provided at one end of the closed door, the hydraulic telescopic rod is connected to the inside of the square pipe culvert by screws, the output end of the hydraulic telescopic rod is connected to the closed door by screws, and the pipeline of the input end of the hydraulic telescopic rod is connected to the external equipment through the connecting port.

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