Laser processing device and laser processing equipment

Abstract

The utility model is suitable for the technical field of laser processing, and provides a laser processing device and equipment, the laser processing device comprises a cross beam, a laser head, a dust suction pipeline, a telescopic pipe, a dust suction cover and two sliding seats, and the sliding seats are arranged in parallel at intervals; the two ends of the beam are slidably arranged on the two sliding seats respectively, the laser head is slidably arranged on the beam, and the sliding direction of the laser head is perpendicular to the sliding direction of the beam. The dust suction pipeline is arranged on the sliding seat, the telescopic pipe is arranged on the cross beam, and one end of the telescopic pipe communicates with the dust suction pipeline; the dust suction cover is connected with the laser head and provided with a first opening and a second opening, the first opening is communicated with one end of the telescopic pipe, and the second opening faces downwards. According to the embodiment of the invention, the dust suction cover can synchronously slide on the cross beam along with the laser head, so that the dust suction cover can suck smoke and dust generated by laser processing in time, the time of the smoke and the dust staying in external air is shortened, the diffusion degree of the smoke and the dust is reduced, and the dust removal effect is improved.

Description

Technical Field

[0001] This application relates to the field of laser processing technology, and in particular to a laser processing apparatus and laser processing equipment. Background Technology

[0002] Laser processing technology is a non-contact processing technology with advantages such as a small heat-affected zone, high processing efficiency, and high processing precision. It is widely used in processes such as cutting, marking, welding, and drilling. Laser cutting equipment is a type of equipment that applies laser processing technology to cutting processes.

[0003] Laser cutting equipment generates a large amount of smoke and dust when cutting materials, which can cause environmental pollution. Currently, laser processing equipment has dust extraction ports on the side of the cutting bed to remove the smoke and dust generated during cutting, thus reducing environmental pollution.

[0004] However, there is a certain distance between the cutting position of the laser cutting equipment and the dust extraction port on the side of the machine bed. This means that during the process of the fumes generated from cutting the material being drawn into the dust extraction port, the fumes need to travel a certain distance in the open air. Therefore, some of the fumes escape when they are drawn into the dust extraction port, resulting in poor dust removal capabilities of the laser cutting equipment. Utility Model Content

[0005] This application provides a laser processing apparatus and equipment that can improve the dust removal capability of laser cutting equipment.

[0006] In a first aspect, embodiments of this application provide a laser processing apparatus, the laser processing apparatus comprising:

[0007] Two sliding seats, which are parallel and spaced apart;

[0008] A crossbeam, with its two ends respectively slidably mounted on two sliding seats;

[0009] A laser head is slidably mounted on the crossbeam, and the sliding direction of the laser head is perpendicular to the sliding direction of the crossbeam.

[0010] A dust extraction pipe is provided on the sliding seat;

[0011] A telescopic pipe is provided on the crossbeam, and one end of the telescopic pipe is connected to the dust extraction pipe;

[0012] A dust extraction hood is connected to the laser head. The dust extraction hood has a first opening and a second opening, and the first opening communicates with the second opening. The first opening is connected to the end of the telescopic tube away from the dust extraction pipe, and the second opening faces downward.

[0013] In some possible embodiments of the first aspect, the laser processing apparatus further includes:

[0014] A movable hood is disposed on the crossbeam and located directly above the dust extraction duct; the movable hood has a third opening and a fourth opening, the third opening and the fourth opening are connected, the third opening is connected to the end of the telescopic tube away from the dust extraction hood, and the fourth opening faces the dust extraction duct.

[0015] A sealing strip is provided at the top of the dust extraction pipe, which has a plurality of spaced first ventilation holes. The sealing strip is provided at the top of the dust extraction pipe and is used to seal the first ventilation holes.

[0016] A support shaft is disposed inside the movable hood, and the sealing strip passes around the support shaft. The support shaft is used to support the sealing strip from the dust extraction pipe.

[0017] In some possible implementations of the first aspect, the height of the support shaft is higher than the inner bottom wall of the end of the telescopic tube away from the dust extraction hood.

[0018] In some possible implementations of the first aspect, multiple support shafts are provided, with some of the support shafts having a height higher than the inner bottom wall of the end of the telescopic tube away from the dust extraction hood, and some of the support shafts having a height lower than the inner bottom wall of the end of the telescopic tube away from the dust extraction hood.

[0019] The sealing strip is wrapped around the lower support shaft and around the upper support shaft.

[0020] In some possible embodiments of the first aspect, the lower-height support shafts are positioned on both sides of the telescopic tube at the end furthest from the dust extraction hood, along the sliding direction of the crossbeam; and / or

[0021] The higher support shaft is positioned on both sides of the end of the telescopic tube furthest from the dust extraction hood, along the sliding direction of the crossbeam.

[0022] In some possible embodiments of the first aspect, the laser processing apparatus further includes:

[0023] A support pipe is provided on the crossbeam, and a telescopic pipe is provided inside the support pipe; the bottom of the support pipe is provided with a plurality of second ventilation holes, which are spaced apart along the sliding direction of the laser head.

[0024] In some possible implementations of the first aspect, the support pipe is located at the bottom of the crossbeam.

[0025] In some possible embodiments of the first aspect, the laser processing apparatus further includes:

[0026] A positioning rod is disposed inside the support pipe, the length direction of the positioning rod is parallel to the sliding direction of the laser head, and the positioning rod passes through the dust extraction hood.

[0027] In some possible implementations of the first aspect, the dust extraction pipe includes:

[0028] Multiple sub-pipes are spliced ​​together along the sliding direction of the crossbeam.

[0029] In some possible embodiments of the first aspect, the laser processing apparatus further includes:

[0030] A workbench is disposed between the two sliding seats and is located below the crossbeam.

[0031] Secondly, embodiments of this application provide a laser processing device, which includes the laser processing apparatus as described in any of the above technical solutions.

[0032] The laser processing apparatus and equipment provided in this application embodiment have a crossbeam slidably mounted on a sliding seat, and a laser head slidably mounted on the crossbeam so that the laser head can process the workpiece located below the crossbeam. The end of the dust extraction pipe is used to connect to an external negative pressure generating device so that negative pressure is generated in the dust extraction pipe through the negative pressure generating device. One end of the telescopic tube is connected to the dust extraction pipe, and the other end of the telescopic tube is connected to the first opening of the dust extraction hood. The second opening of the dust extraction hood faces downward so that the negative pressure sequentially passes through the dust extraction pipe, the telescopic tube, and the dust extraction hood to adsorb smoke and dust, thereby sucking in the smoke and dust generated by laser processing from the second opening. The telescopic tube can extend and retract along the sliding direction of the laser head to reduce the interference of the telescopic tube on the movement of the dust extraction hood on the crossbeam. The dust extraction hood is connected to the laser head so that the dust extraction hood slides synchronously on the crossbeam with the laser head, so that the dust extraction hood can timely suck in the smoke and dust generated by laser processing, reduce the time that smoke and dust stay in the outside air, thereby reducing the degree of diffusion of smoke and dust and improving the dust removal effect. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of an embodiment of the laser processing apparatus of this application;

[0035] Figure 2 This is a partial cross-sectional view of an embodiment of the laser processing apparatus of this application;

[0036] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0037] Figure 4 for Figure 1 A partial structural diagram;

[0038] Figure 5 for Figure 4 Cross-sectional view of the middle part of the structure.

[0039] Explanation of icon numbers:

[0040] 1. Sliding seat; 2. Crossbeam; 3. Laser head; 4. Dust extraction duct; 41. Sub-duct; 411. First ventilation hole; 5. Telescopic tube; 6. Dust extraction hood; 7. Moving fan hood; 71. Third opening; 72. Fourth opening; 8. Sealing strip; 9. Support shaft; 10. Support duct; 101. Second ventilation hole; 20. Positioning rod; 30. Worktable.

[0041] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0043] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0044] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] It should be understood that the term "and / or" as used in this application specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0047] This application provides a laser processing apparatus and equipment to solve the technical problem of poor dust removal capability in laser processing equipment.

[0048] In the embodiments of this application, such as Figure 1 , Figure 2 and Figure 4 As shown, the laser processing device includes a crossbeam 2, a laser head 3, a dust extraction pipe 4, a telescopic tube 5, a dust extraction hood 6, and two sliding seats 1, which are parallel and spaced apart. The two ends of the crossbeam 2 slide on the two sliding seats 1 respectively, and the laser head 3 slides on the crossbeam 2, with the sliding direction of the laser head 3 perpendicular to the sliding direction of the crossbeam 2. The dust extraction pipe 4 is located on the sliding seats 1, and the telescopic tube 5 is located on the crossbeam 2, with one end of the telescopic tube 5 connected to the dust extraction pipe 4. The dust extraction hood 6 is connected to the laser head 3 and has a first opening and a second opening, which are connected. The first opening is connected to the end of the telescopic tube 5 away from the dust extraction pipe 4, and the second opening faces downwards.

[0049] The sliding seat 1 supports the crossbeam 2, allowing the crossbeam 2 to slide on the sliding seat 1. The crossbeam 2 supports the laser head 3, allowing the laser head 3 to slide on the crossbeam 2. The laser head 3 emits a laser beam to process the workpiece below it. Because the sliding direction of the laser head 3 is perpendicular to the sliding direction of the crossbeam 2, the laser beam emitted by the laser head 3 can process the workpiece along different trajectories.

[0050] The dust extraction pipe 4 is disposed on the sliding seat 1, and the end of the dust extraction pipe 4 is used to connect to an external negative pressure generating device so as to apply a negative pressure for adsorption into the dust extraction pipe 4 through the negative pressure generating device. Specifically, the dust extraction pipe 4 can be disposed on the inner side of the sliding seat 1.

[0051] Telescopic tube 5 is installed on crossbeam 2 to support telescopic tube 5 via crossbeam 2. Dust extraction hood 6 is connected to laser head 3 so that dust extraction hood 6 can slide synchronously on crossbeam 2 together with laser head 3. The second opening of dust extraction hood 6 faces downward so that after the laser beam processes the workpiece located below dust extraction hood 6, the smoke and dust generated can be drawn in from the second opening under the negative pressure inside dust extraction hood 6.

[0052] One end of the telescopic tube 5 is connected to the dust extraction pipe 4, and the other end of the telescopic tube 5 is connected to the first opening of the dust extraction hood 6. The first opening is connected to the second opening, and the end of the dust extraction pipe 4 is used to connect to an external negative pressure generating device. Therefore, the negative pressure generated by the negative pressure generating device can be transmitted to the dust extraction pipe 4, then from the dust extraction pipe 4 to the telescopic tube 5, and then from the telescopic tube 5 to the dust extraction hood 6, thus facilitating the intake of fumes and dust generated by laser processing through the second opening. The fumes and dust drawn into the dust extraction hood 6 pass through the telescopic tube 5 and the dust extraction pipe 4 in sequence and are collected outside the dust extraction pipe 4.

[0053] In this embodiment, the crossbeam 2 is slidably mounted on the sliding seat 1, and the laser head 3 is slidably mounted on the crossbeam 2 so that the laser head 3 can process the workpiece located below the crossbeam 2; the end of the dust extraction pipe 4 is used to connect to an external negative pressure generating device so that negative pressure is generated in the dust extraction pipe 4 by the negative pressure generating device; one end of the telescopic pipe 5 is connected to the dust extraction pipe 4, and the other end of the telescopic pipe 5 is connected to the first opening of the dust extraction hood 6, while the second opening of the dust extraction hood 6 faces downward so that the negative pressure passes sequentially through the dust extraction pipe 4, the telescopic pipe 5, and the dust extraction hood 6 to remove smoke. The dust is adsorbed, thereby drawing in the smoke and dust generated by laser processing through the second opening; the telescopic tube 5 can extend and retract along the sliding direction of the laser head 3 to reduce the interference of the telescopic tube 5 on the movement of the dust extraction hood 6 on the crossbeam 2; the dust extraction hood 6 is connected to the laser head 3 so that the dust extraction hood 6 slides synchronously with the laser head 3 on the crossbeam 2, so that the dust extraction hood 6 can promptly draw in the smoke and dust generated by laser processing, reduce the time that the smoke and dust stay in the outside air, thereby reducing the degree of diffusion of smoke and dust and improving the dust removal effect.

[0054] In one embodiment, such as Figures 1 to 3As shown, the laser processing device also includes a movable hood 7, a sealing strip 8, and a support shaft 9. The movable hood 7 is mounted on the crossbeam 2 and is located directly above the dust extraction duct 4. The movable hood 7 has a third opening 71 and a fourth opening 72, which communicate with each other. The third opening 71 is connected to the end of the telescopic tube 5 away from the dust extraction hood 6, and the fourth opening 72 faces the dust extraction duct 4. The top of the dust extraction duct 4 has a plurality of spaced-apart first ventilation holes 411. The sealing strip 8 is mounted on the top of the dust extraction duct 4 and is used to seal the first ventilation holes 411. The support shaft 9 is located inside the movable hood 7, and the sealing strip 8 passes around the support shaft 9. The support shaft 9 is used to support the sealing strip 8 from the dust extraction duct 4.

[0055] The movable hood 7 is mounted on the crossbeam 2 and located directly above the dust extraction duct 4, so the fourth opening 72 of the movable hood 7 always faces the dust extraction duct 4. The top of the dust extraction duct 4 has multiple spaced-apart first ventilation holes 411. A sealing strip 8 is mounted on the top of the dust extraction duct 4, allowing it to cover the first ventilation holes 411 and seal them. When negative pressure is generated inside the dust extraction duct 4, the sealing strip 8 can be attracted to the top of the dust extraction duct 4 through the first ventilation holes 411, preventing it from detaching from the top of the dust extraction duct 4.

[0056] The support shaft 9 is disposed inside the movable hood 7, and the sealing strip 8 passes around the support shaft 9 so that the support shaft 9 pushes the sealing strip 8 away from the dust extraction pipe 4, thereby exposing the first ventilation hole 411. Since the support shaft 9 is disposed inside the movable hood 7, the exposed first ventilation hole 411 is located inside the movable hood 7.

[0057] The fourth opening 72 of the movable hood 7 faces the dust extraction duct 4, so that the sealing strip 8 can extend into the movable hood 7 from the fourth opening 72. This allows the sealing strip 8 to bypass the support shaft 9, thereby supporting the sealing strip 8 from the top of the dust extraction duct 4, so that the first ventilation hole 411 communicates with the fourth opening 72. The fourth opening 72 communicates with the third opening 71, and the third opening 71 communicates with the telescopic pipe 5. Therefore, the dust extraction duct 4 and the telescopic pipe 5 can be connected through the movable hood 7.

[0058] Except for the portion of the sealing strip 8 on the dust extraction duct 4 directly below the movable fan hood 7 that is supported by the support shaft 9, the remaining portion of the sealing strip 8 is adsorbed onto the top of the dust extraction duct 4 by the negative pressure inside the dust extraction duct 4, thereby sealing the first through hole in that portion. Therefore, only the first through hole directly below the movable fan hood 7 is open, while the other first through holes are sealed by the sealing strip 8.

[0059] When the crossbeam 2 slides on the sliding seat 1, the movable hood 7 moves synchronously with the crossbeam 2. The support shaft 9 is located inside the movable hood 7, so only the first through hole directly below the movable hood 7 is open, thereby connecting the dust extraction pipe 4 and the telescopic pipe 5 through the movable hood 7 without affecting the sliding of the crossbeam 2 on the sliding seat 1.

[0060] In one embodiment, such as Figures 1 to 3 As shown, the height of the support shaft 9 is higher than the inner bottom wall of the end of the telescopic tube 5 away from the dust extraction hood 6, so as to reduce the influence of the sealing strip 8 supported by the support shaft 9 on the negative pressure transmitted from the fourth opening 72 to the third opening 71, thereby reducing the loss of negative pressure during the transmission process, increasing the magnitude of the negative pressure transmitted to the second opening, and improving the dust removal effect.

[0061] In one embodiment, such as Figures 1 to 3 As shown, multiple support shafts 9 are provided. The height of some support shafts 9 is higher than the inner bottom wall of the end of the telescopic tube 5 away from the dust extraction hood 6, and the height of some support shafts 9 is lower than the inner bottom wall of the end of the telescopic tube 5 away from the dust extraction hood 6. The sealing strip 8 is wrapped around the lower support shaft 9 and around the upper support shaft 9.

[0062] The support base with a height higher than the inner bottom wall of the end of the telescopic tube 5 away from the dust extraction hood 6 belongs to the support shaft with a higher height 9, and the support base with a height lower than the inner bottom wall of the end of the telescopic tube 5 away from the dust extraction hood 6 belongs to the support shaft with a lower height 9.

[0063] By appropriately setting the number and height of the support shafts 9, the influence of the sealing strip 8 supported by the support shafts 9 on the transmission of negative pressure from the fourth opening 72 to the third opening 71 can be reduced, thereby reducing the loss of negative pressure during transmission, increasing the magnitude of the negative pressure transmitted to the second opening, and improving the dust removal effect. Furthermore, the portion of the sealing strip 8 excluding the area directly below the moving fan hood 7 can be adsorbed by the negative pressure within the dust extraction pipe 4 and placed on the top of the dust extraction pipe 4, so that this portion of the sealing strip 8 seals the first through hole, thereby reducing the loss of negative pressure.

[0064] In one embodiment, such as Figures 1 to 3 As shown, the lower support shafts 9 are positioned on both sides of the end of the telescopic tube 5 furthest from the dust extraction hood 6, along the sliding direction of the crossbeam 2; and / or

[0065] The higher support shaft 9 is set on both sides of the end of the telescopic tube 5 away from the dust extraction hood 6 along the sliding direction of the crossbeam 2.

[0066] The sealing strip 8, except for the part directly below the moving fan hood 7, can be adsorbed by the negative pressure inside the dust extraction pipe 4 to the top of the dust extraction pipe 4, so that the sealing strip 8 in this part seals the first through hole and reduces the loss of negative pressure.

[0067] In one embodiment, such as Figure 3 As shown, the support shaft 9 is rotatably disposed inside the movable hood 7 to reduce the friction between the support shaft 9 and the sealing strip 8.

[0068] In one embodiment, such as Figure 1 , Figure 4 and Figure 5 As shown, the laser processing device also includes a support pipe 10, which is disposed on the crossbeam 2, and a telescopic pipe 5 is disposed inside the support pipe 10. Multiple second ventilation holes 101 are provided at the bottom of the support pipe 10, and the second ventilation holes 101 are spaced apart along the sliding direction of the laser head 3.

[0069] The support pipe 10 is used to support and limit the telescopic pipe 5, preventing the telescopic pipe 5 from folding or twisting during the telescopic process, which would affect the transmission of negative pressure. The second ventilation hole 101 is used to provide a channel for the second opening to absorb smoke and dust.

[0070] In one embodiment, such as Figure 1 , Figure 4 and Figure 5 As shown, the support pipe 10 is located at the bottom of the crossbeam 2 to avoid interference with the laser beam emitted by the laser head 3 in the processing of the workpiece, thereby reducing the interference of the support pipe 10 with other components. It also allows the dust extraction hood 6 to draw in the smoke and dust generated during laser processing earlier, reducing the diffusion time of smoke and dust in the outside air and improving the dust extraction effect.

[0071] In one embodiment, such as Figure 1 , Figure 4 and Figure 5 As shown, the laser processing device also includes a positioning rod 20, which is disposed inside the support pipe 10. The length direction of the positioning rod 20 is parallel to the sliding direction of the laser head 3, and the positioning rod 20 passes through the dust extraction hood 6. When the dust extraction hood 6 slides on the crossbeam 2 with the laser head 3, the dust extraction hood 6 can move freely on the positioning rod 20. The positioning rod 20 can support the telescopic tube 5, preventing the telescopic tube 5 from stacking, folding, or twisting together, which would affect the dust extraction effect.

[0072] In this embodiment, multiple positioning rods 20 can be provided.

[0073] In one embodiment, such as Figure 1 and Figure 2 As shown, the dust extraction pipe 4 includes multiple sub-pipes 41, which are spliced ​​together along the sliding direction of the crossbeam 2. This facilitates the manufacturing and transportation of the sub-pipes 41, and also allows for the splicing of a corresponding number of sub-pipes 41 according to actual working conditions, thereby making it easier to control the length of the dust extraction pipe 4.

[0074] In one embodiment, such as Figure 1As shown, the laser processing device also includes a worktable 30, which is disposed between two sliding seats 1 and located below the crossbeam 2. The worktable 30 is used to support the workpiece and can improve the welding accuracy of the workpiece.

[0075] Furthermore, this application also provides a laser processing device, which includes a laser processing apparatus. The specific structure of the laser processing apparatus is as described in the above embodiments. Since the laser processing device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments.

[0076] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A laser processing apparatus characterized by comprising: The laser processing device comprises: two sliding seats arranged in parallel and spaced apart; a crossbeam, both ends of which are respectively slidably arranged on the two sliding seats; a laser head, which is slidably arranged on the crossbeam, and the sliding direction of the laser head is perpendicular to the sliding direction of the crossbeam; a dust extraction pipeline, which is arranged on the sliding seat; a telescopic pipe, which is arranged on the crossbeam, and one end of the telescopic pipe is in communication with the dust extraction pipeline; a dust extraction cover, which is connected with the laser head, and the dust extraction cover has a first opening and a second opening, the first opening and the second opening are in communication, the first opening is in communication with the end of the telescopic pipe away from the dust extraction pipeline, and the second opening faces downward.

2. The laser processing apparatus according to claim 1, wherein The laser processing device further comprises: a movable air cover, which is arranged on the crossbeam and is located directly above the dust extraction pipeline; the movable air cover has a third opening and a fourth opening, the third opening and the fourth opening are in communication, the third opening is in communication with the end of the telescopic pipe away from the dust extraction cover, and the fourth opening faces the dust extraction pipeline; a sealing belt, the top of the dust extraction pipeline is provided with a plurality of first ventilation holes arranged at intervals, and the sealing belt is arranged on the top of the dust extraction pipeline and is used for sealing the first ventilation holes; a support shaft, which is arranged in the movable air cover, the sealing belt passes around the support shaft, and the support shaft is used for supporting the sealing belt from the dust extraction pipeline.

3. The laser processing apparatus according to claim 2, wherein The height of the support shaft is higher than the inner bottom wall of the end of the telescopic pipe away from the dust extraction cover.

4. The laser processing apparatus according to claim 2, wherein The support shaft is provided in plurality, the height of part of the support shaft is higher than the inner bottom wall of the end of the telescopic pipe away from the dust extraction cover, and the height of part of the support shaft is lower than the inner bottom wall of the end of the telescopic pipe away from the dust extraction cover; wherein, the sealing belt is arranged below the support shaft with lower height and above the support shaft with higher height.

5. The laser processing apparatus according to claim 4, wherein The support shaft with lower height is arranged on both sides of the end of the telescopic pipe away from the dust extraction cover along the sliding direction of the crossbeam; and / or The support shaft with higher height is arranged on both sides of the end of the telescopic pipe away from the dust extraction cover along the sliding direction of the crossbeam.

6. The laser processing apparatus as claimed in claim 1, wherein The laser processing device further comprises: a support pipeline, which is arranged on the crossbeam, and the telescopic pipe is arranged in the support pipeline; the bottom of the support pipeline is provided with a plurality of second ventilation holes, and the second ventilation holes are arranged at intervals along the sliding direction of the laser head.

7. The laser processing apparatus as claimed in claim 6, wherein The support pipeline is arranged at the bottom of the crossbeam.

8. The laser processing apparatus of claim 6, wherein The laser processing device further comprises: a positioning rod, which is arranged in the support pipeline, the length direction of the positioning rod is parallel to the sliding direction of the laser head, and the positioning rod penetrates the dust extraction cover.

9. The laser processing apparatus as claimed in claim 1, wherein The dust extraction pipeline comprises: a plurality of sub-pipelines, which are spliced along the sliding direction of the crossbeam.

10. The laser processing apparatus of claim 1, wherein The laser processing device further comprises: a workbench, which is arranged between the two sliding seats and is located below the crossbeam.

11. A laser processing apparatus characterized by comprising: The laser processing apparatus includes the laser processing device according to any one of claims 1 to 10.

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