A laser cutting slag removal device for hollow profiles

Abstract

The application relates to a laser cutting slag removing device for a hollow profile, which comprises a rack, a laser cutting device connected to the rack and a steel pipe connected to the laser cutting device, one end of the rack away from the laser cutting device is connected with a receiving assembly, the receiving assembly comprises a receiving piece and a replacement piece, the receiving piece comprises a receiving main seat and a receiving pipe connected to the receiving main seat, the receiving pipe is located directly below the steel pipe, and a plurality of arc-shaped lining blocks are sequentially laid on the upper side of the receiving pipe from one end to the other end; a lining block storage bin is connected to the rack and is located directly below the receiving pipe; the replacement piece comprises a discharging plate arranged directly above the receiving pipe, and the discharging plate is located at one end of the receiving pipe away from the steel pipe. The technical scheme of the application has the beneficial technical effects that the receiving assembly arranged at one end of the rack away from the laser cutting device can effectively avoid the molten slag generated in the laser cutting process of the hollow profile from adhering to the inner wall of the workpiece, and the inner surface quality of the product is significantly improved.

Description

Technical Field

[0001] This invention relates to the field of laser cutting slag removal, and specifically to a laser cutting slag removal device for hollow profiles. Background Technology

[0002] Laser cutting is an advanced machining process that uses a high-power-density laser beam to locally heat a workpiece to its vaporization temperature, and then uses a high-speed airflow to blow away the molten material to achieve cutting. When laser cutting hollow profiles such as cylindrical or square tubes, because the workpiece has a closed or semi-closed internal structure, molten slag is easily blown into the workpiece by the cutting airflow. After cooling, it adheres to the inner wall, forming slag nodules that are difficult to remove. These nodules not only affect the appearance quality of the workpiece but may also interfere with subsequent processing steps such as welding and painting, and even affect the assembly accuracy and performance of the workpiece.

[0003] Existing technologies for dealing with the slag buildup on the inner wall during laser cutting of hollow profiles mostly rely on manual cleaning or subsequent mechanical removal, which is inefficient and can easily damage the inner surface of the workpiece.

[0004] Therefore, it is very necessary to provide a laser cutting slag removal device for hollow profiles to solve the above-mentioned technical problems. Summary of the Invention

[0005] Based on the above description, the present invention provides a laser cutting slag removal device for hollow profiles to solve the problems of low efficiency and easy damage to the inner surface of the workpiece caused by the use of manual cleaning or subsequent mechanical removal of molten slag in the prior art.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A laser cutting and slag removal device for hollow profiles includes a frame, a laser cutting device connected to the frame, and a steel pipe connected to the laser cutting device. A receiving component is connected to the end of the frame away from the laser cutting device. The receiving component includes a receiving part and a replacement part. The receiving part includes a receiving main seat and a receiving pipe connected to the receiving main seat. The receiving pipe is located directly below the steel pipe. Multiple arc-shaped lining blocks are sequentially laid on the upper side of the receiving pipe from one end to the other. A lining block storage bin is connected to the frame. The lining block storage bin is located directly below the receiving pipe. The replacement part includes a feeding plate located directly above the receiving pipe. The feeding plate is located at the end of the receiving pipe away from the steel pipe.

[0007] Preferably, a receiving component is installed at the end of the frame away from the laser cutting equipment, with the receiving pipe located directly below the steel pipe. The receiving pipe is used to collect the waste slag generated during the laser cutting of hollow profiles. Multiple arc-shaped lining blocks are laid on the upper side of the receiving pipe to collect the waste slag, and after collection, they can slide more smoothly into the lining plate storage bin, effectively preventing the molten slag generated during the laser cutting of hollow profiles from adhering to the inner wall of the workpiece, and significantly improving the inner surface quality of the product. Meanwhile, the feeding plate is set at the end of the receiving pipe away from the steel pipe, which facilitates the replacement of the arc-shaped liner on the receiving pipe, improving production efficiency and product quality.

[0008] Furthermore, the receiving component includes a plurality of negative pressure holes formed on the receiving tube, and the arc-shaped liner is adsorbed and connected to the receiving tube through the gas in the negative pressure holes; the receiving tube is provided with a negative pressure channel, the negative pressure channel is connected to the negative pressure holes, the air inlet end of the negative pressure channel is connected to a connecting groove, and the air inlet end of the connecting groove is connected to a negative pressure hose interface.

[0009] Preferably, the negative pressure holes opened on the receiving pipe, together with the arc-shaped liner, allow the gas in the negative pressure holes to be adsorbed and connected to the receiving pipe, thereby improving the stability of the connection between the arc-shaped liner and the receiving pipe. In addition, a negative pressure channel is set inside the receiving pipe and connected to a negative pressure hole. The air inlet end of the negative pressure channel is connected to a negative pressure hose interface through a connecting groove. The negative pressure hose interface is used to connect to a negative pressure suction pump to build a complete and efficient negative pressure adsorption system.

[0010] Furthermore, it also includes a receiving telescopic component, which includes a receiving telescopic seat connected to the frame and a receiving guide rod slidably connected to the receiving telescopic seat. The receiving guide rod is connected to the receiving main seat, and a receiving lifting cylinder is connected to the receiving telescopic seat. The telescopic end of the receiving lifting cylinder is connected to the receiving main seat.

[0011] Furthermore, a top block is slidably connected to the end of the receiving pipe away from the steel pipe, and the top block abuts against the arc-shaped liner.

[0012] Preferably, the top block is used to abut against the arc-shaped liner block. When the arc-shaped liner block on the receiving pipe is filled with waste residue, the top block can push the arc-shaped liner block filled with waste residue into the liner block storage bin.

[0013] Furthermore, a limiting through hole is provided at the end of the receiving pipe away from the steel pipe, a top connecting block is connected to the top block, a buffer spring bracket is connected to the receiving pipe, a limiting slide rod is slidably connected to the buffer spring bracket, the limiting slide rod is connected to the top connecting block, a buffer spring is sleeved on the limiting slide rod, one end of the buffer spring is connected to the buffer spring bracket, and the other end of the buffer spring is connected to the top connecting block.

[0014] Preferably, the buffer spring is sleeved on the limiting slide rod, with one end connected to the buffer spring bracket and the other end connected to the top connecting block. When the top block is subjected to a driving force during sliding, the buffer spring can elastically buffer, absorb and disperse the impact force, and improve the stability of the top block's movement.

[0015] Furthermore, a block drive component is connected to the top connecting block, and the block drive component is connected to the frame.

[0016] Preferably, the block drive component uses a small cylinder or telescopic motor to drive the top connecting block to reciprocate.

[0017] Furthermore, the replacement component includes a telescopic cylinder connected to the frame, the telescopic cylinder being connected to the unloading plate.

[0018] Preferably, the telescopic cylinder is used to drive the feeding plate to move up and down reciprocally, and the feeding plate always abuts against the feeding end of the receiving pipe during the feeding process. An electromagnet is embedded at the lower end of the feeding plate. When the feeding process is energized, it generates magnetic force to attract the arc-shaped liner.

[0019] Furthermore, a hopper is connected to the frame, a hopper body slide frame is connected to the discharge end of the hopper, the discharge plate is slidably connected to the hopper body slide frame, a wedge block is slidably connected to the hopper body slide frame, and a wedge block return spring is connected between the wedge block and the hopper body slide frame.

[0020] Preferably, the hopper is used to store the arc-shaped liner. When the lower plate completes a feeding operation and returns to the feeding position, the arc-shaped liner on the hopper can be quickly conveyed to the feeding plate.

[0021] Furthermore, a push rod is slidably connected to the hopper, and a push block is connected to the push rod. The push block abuts against the arc-shaped liner. A feeding spring is sleeved on the push rod. One end of the feeding spring is connected to the push block, and the other end of the feeding spring is connected to the hopper.

[0022] Preferably, the feeding spring is used to push the pusher block to move forward continuously, so that the arc-shaped liner plate moves to the unloading plate.

[0023] Furthermore, the two ends of the arc-shaped liner are connected to liner clips.

[0024] Preferably, the liner clip can increase the contact area between the arc-shaped liner and the receiving pipe, ensuring the stability of the connection between the liner clip and the arc-shaped liner.

[0025] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: 1. By installing a receiving component at the end of the frame away from the laser cutting equipment, with the receiving pipe located directly below the steel pipe, the receiving pipe is used to collect the waste slag generated during the laser cutting of hollow profiles. Multiple arc-shaped lining blocks are laid on the upper side of the receiving pipe to collect the waste slag, and after collection, they can slide more smoothly into the lining plate storage bin, effectively preventing the molten slag generated during the laser cutting of hollow profiles from adhering to the inner wall of the workpiece, and significantly improving the inner surface quality of the product; 2. The feeding plate is set at the end of the receiving pipe away from the steel pipe, which facilitates the replacement of the arc-shaped liner on the receiving pipe, improving production efficiency and product quality. Attached Figure Description

[0026] Figure 1 A schematic diagram of the overall structure of a laser cutting and slag removal device for hollow profiles provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a receiving component in a laser cutting and slag removal device for hollow profiles, provided in an embodiment of the present invention. Figure 3 This invention provides a schematic diagram of the structure of the support pipe and the arc-shaped liner in a laser cutting slag removal device for hollow profiles, as provided in an embodiment of the invention. Figure 4 This is a schematic diagram of the negative pressure channel in a laser cutting and slag removal device for hollow profiles, provided as an embodiment of the present invention.

[0027] The attached diagram lists the components represented by each number as follows: 1. Frame; 2. Laser cutting equipment; 3. Steel pipe; 4. Components; 41. Main support; 42. Connecting pipe; 421. Limiting through hole; 43. Negative pressure port; 44. Negative pressure channel; 45. Connecting groove; 46. Negative pressure hose interface; 47. Top block; 471. Top connecting block; 472. Buffer spring bracket; 473. Limiting slide bar; 474. Buffer spring; 475. Block driving component; 5. Replacement parts; 51. Feeding plate; 52. Telescopic cylinder; 53. Hopper; 531. Hopper body slide frame; 532. Wedge block; 533. Wedge block return spring; 54. Push rod; 55. Push block; 56. Feeding spring; 6. Arc-shaped liner; 61. Liner clip; 7. Liner block storage compartment; 8. We undertake the construction of telescopic components; 81. We undertake the construction of telescopic seats; 82. We undertake the construction of guide rods; 83. We undertake the construction of lifting cylinders. Detailed Implementation

[0028] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

[0030] It is understood that spatial relation terms such as "below," "under," "below," "below," "above," "above," etc., can be used here to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, the element or feature described as "below" or "below" of the other element or feature will be oriented "above" the other element or feature. Therefore, the exemplary terms "below" and "below" can include both upper and lower orientations. Furthermore, the device may also include other orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptive terms used herein will be interpreted accordingly.

[0031] It should be noted that when one element is considered to be "connected" to another element, it can be directly connected to the other element or connected to the other element through an intermediary element. In the following embodiments, "connection" should be understood as "electrical connection," "communication connection," etc., if the connected circuits, modules, units, etc., have the transmission of electrical signals or data between them.

[0032] When used herein, the singular forms of “a,” “an,” and “the” may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising,” “including,” or “having,” etc., specify the presence of the stated feature, whole, step, operation, component, part, or combination thereof, but do not preclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof.

[0033] like Figures 1 to 4As shown, a laser cutting and slag removal device for hollow profiles includes a frame 1, a laser cutting device 2 connected to the frame 1, and a steel pipe 3 connected to the laser cutting device 2. A receiving assembly is connected to the end of the frame 1 away from the laser cutting device 2. The receiving assembly includes a receiving component 4 and a replacement component 5. The receiving component 4 includes a receiving main seat 41 and a receiving pipe 42 connected to the receiving main seat 41. The receiving pipe 42 is located directly below the steel pipe 3. Multiple arc-shaped lining blocks 6 are sequentially laid on the upper side of the receiving pipe 42 from one end to the other. A lining block storage bin 7 is connected to the frame 1, and the lining block storage bin 7 is located directly below the receiving pipe 42. The replacement component 5 includes a feeding plate 51 located directly above the receiving pipe 42, at the end of the receiving pipe 42 away from the steel pipe 3.

[0034] In this embodiment, the multiple arc-shaped lining blocks 6 laid on the upper side of the receiving pipe 42 can conform to the outer contour of the steel pipe 3 and can catch the molten slag and debris falling during the cutting process, so as to prevent the molten slag from falling directly onto the frame 1 or the ground, causing equipment pollution and site mess, and affecting the production quality of the steel pipe 3. In addition, the liner storage compartment 7 can centrally store the used curved liner 6 for convenient subsequent processing; Meanwhile, the new arc-shaped liner 6 is placed inside the receiving pipe 42 by the feeding plate 51, which greatly shortens the equipment downtime for maintenance and ensures the continuity of hollow profile laser cutting operations.

[0035] See Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the receiving member 4 includes a plurality of negative pressure holes 43 formed on the receiving pipe 42, and the arc-shaped liner 6 is adsorbed and connected to the receiving pipe 42 through the gas in the negative pressure holes 43; the receiving pipe 42 is provided with a negative pressure channel 44, the negative pressure channel 44 is connected to the negative pressure holes 43, the air inlet end of the negative pressure channel 44 is connected to a connecting groove 45, and the air inlet end of the connecting groove 45 is connected to a negative pressure hose interface 46.

[0036] In this embodiment, the negative pressure hole 43 is used to release negative pressure gas so that the arc-shaped liner 6 can be adsorbed by the negative pressure gas. The negative pressure hose interface 46 is connected to the connecting groove 45. The connecting groove 45 is arranged in a tubular shape on both sides of the receiving pipe 42. The connecting groove 45 is used to connect the negative pressure channels 44 on both sides.

[0037] In some embodiments, the device further includes a receiving telescopic member 8, which includes a receiving telescopic seat 81 connected to the frame 1 and a receiving guide rod 82 slidably connected to the receiving telescopic seat 81. The receiving guide rod 82 is connected to the receiving main seat 41. A receiving lifting cylinder 83 is connected to the receiving telescopic seat 81, and the telescopic end of the receiving lifting cylinder 83 is connected to the receiving main seat 41.

[0038] In this embodiment, the receiving lifting cylinder 83 is used to drive the receiving pipe 42 to reciprocate to move the steel pipe 3 in or out.

[0039] See Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, a top block 47 is slidably connected to the end of the receiving pipe 42 away from the steel pipe 3, and the top block 47 abuts against the arc-shaped liner 6.

[0040] In this embodiment, the top block 47 is slidably connected to the receiving pipe 42 so that during the sliding movement, the used arc-shaped liner 6 is pushed to the liner storage compartment 7.

[0041] See Figure 4 As shown, in some embodiments, a limiting through hole 421 is provided at the end of the receiving pipe 42 away from the steel pipe 3, a top connecting block 471 is connected to the top block 47, a buffer spring bracket 472 is connected to the receiving pipe 42, a limiting slide rod 473 is slidably connected to the buffer spring bracket 472, the limiting slide rod 473 is connected to the top connecting block 471, a buffer spring 474 is sleeved on the limiting slide rod 473, one end of the buffer spring 474 is connected to the buffer spring bracket 472, and the other end of the buffer spring 474 is connected to the top connecting block 471.

[0042] In this embodiment, the elastic deformation of the buffer spring 474 absorbs the impact and vibration, reducing the problem of uneven movement of the arc-shaped liner caused by uneven movement speed.

[0043] In some embodiments, a block drive 475 is connected to the top connecting block 471, and the block drive 475 is connected to the frame 1.

[0044] In this embodiment, the block drive component 475 is preferably a linear motor (such as the HIWIN KK60 series or THK SRG series) to drive the top block 47 to move. Additionally, a motor mount is connected to the block drive component 475. The motor mount is fixedly connected to the frame 1 by welding or bolting. Mounting holes are provided at the bottom of the motor mount, and the motor is fixed to the base or frame with bolts. This installation method is simple and reliable, suitable for most applications. Depending on the mounting position of the feet, it can be further subdivided into horizontal foot mounting and vertical foot mounting; it can also be mounted via a flange. Flange mounting utilizes the mounting holes on the flange on the front face of the motor to fix the motor to the equipment. The motor mounting methods are common to those skilled in the art, and are not the focus of this application; therefore, they will not be elaborated upon here.

[0045] The block drive component 475 can also be selected as a telescopic cylinder according to actual needs to drive the bearing pipe 42 into the workpiece.

[0046] See Figure 1 and Figure 2 As shown, in some embodiments, the replacement component 5 includes a telescopic cylinder 52 (such as the SMC CDQ2B series or Festo ADN series) connected to the frame 1, and the telescopic cylinder 52 is connected to the unloading plate 51.

[0047] In this embodiment, the movement of the feeding plate 51 is driven by the telescopic cylinder 52, which greatly reduces manual intervention in the liner replacement process and reduces the labor intensity of the operators.

[0048] In some embodiments, a hopper 53 is connected to the frame 1, a hopper body slide frame 531 is connected to the discharge end of the hopper 53, the discharge plate 51 is slidably connected to the hopper body slide frame 531, a wedge block 532 is slidably connected to the hopper body slide frame 531, and a wedge block return spring 533 is connected between the wedge block 532 and the hopper body slide frame 531.

[0049] In this embodiment, the hopper 53 is used to store new arc-shaped liners 6 so that the new arc-shaped liners 6 can be lowered to the receiving pipe 42 during the process of the feeding plate 51 reciprocating along the feeding position and the unloading position in the hopper body slide frame 531; the cooperation of the wedge block return spring 533 and the wedge block 532 can prevent the arc-shaped liners 6 from falling to the receiving pipe 42 when they are not pushed by the feeding plate 51.

[0050] In some embodiments, a push rod 54 is slidably connected to the hopper 53, a push block 55 is connected to the push rod 54, the push block 55 abuts against the arc-shaped liner 6, and a feeding spring 56 is sleeved on the push rod 54. One end of the feeding spring 56 is connected to the push block 55, and the other end of the feeding spring 56 is connected to the hopper 53.

[0051] In this embodiment, the continuous elastic force of the feeding spring 56 can ensure that the pushing force of the pusher block 55 on the liner block is stable, and can smoothly move the arc-shaped liner block 6 in the hopper 53 to the side close to the receiving pipe 42.

[0052] See Figure 3 As shown, in some embodiments, the arc-shaped liner 6 is connected to liner clips 61 at both ends.

[0053] Example 2: The receiving pipe 42 is positioned opposite the opening of the cylindrical, square, or other hollow profile to be processed. The receiving pipe 42 has a semi-circular, upward-facing opening and is driven by a lifting cylinder 83, allowing it to extend axially into or out of the workpiece. The laser cutting equipment 2 is located above the workpiece (steel pipe 3). Molten slag generated during the cutting process falls into the receiving pipe 41 under the influence of gravity and the cutting airflow, thus reducing the possibility of molten slag adhering to the inner wall of the workpiece. Additionally, multiple arc-shaped lining blocks 6 are sequentially laid inside the receiving pipe 41 to directly receive the high-temperature molten slag. A negative pressure hose is connected to the rear of the receiving pipe 41 via a negative pressure hose interface 46. The negative pressure suction further enhances the molten slag collection effect, preventing molten slag from scattering due to rebound or airflow disturbance.

[0054] When the arc-shaped liner 6 needs to be replaced, the telescopic cylinder 52 drives the feeding plate 51 to move downwards, pushing the foremost arc-shaped liner 6 in the hopper 53 into the empty space behind the receiving pipe 41. A pusher block 55 and a feeding spring 56 are located behind the hopper 53. Under the action of the feeding spring 56, the pusher block 55 continuously presses the arc-shaped liner 6 forward, ensuring that the arc-shaped liner 6 is promptly replaced after feeding, maintaining a compact arrangement of the arc-shaped liner 6 within the hopper 53. The feeding plate 51 has sufficient longitudinal length to prevent subsequent liner blocks from moving forward during its reset process, avoiding accidental pushing or jamming.

[0055] The specific implementation method of this application is as follows: Before the laser cutting equipment 2 begins cutting, the lifting cylinder 83 pushes the receiving pipe 42 to extend into the interior along the axis of the steel pipe 3. Several clean, arc-shaped lining blocks 6 are laid on the receiving pipe 42, arranged side-by-side to form a continuous slag receiving surface. During the cutting process, the high-temperature molten slag is splashed downwards and falls onto the arc-shaped lining plate 6 of the receiving pipe 42 under the influence of gravity and the cutting auxiliary airflow. To enhance the collection effect and prevent the rebound of small slag particles, a negative pressure suction pump is activated, generating a negative pressure airflow at the negative pressure hole 43 to pull the splashed molten slag towards the arc-shaped lining blocks. The key is to generate a downward adsorption force on the arc-shaped liner itself, so that it fits tightly against the inner wall of the receiving pipe, effectively preventing the liner from shifting or lifting during the movement or vibration of the device, and ensuring the stability of the receiving process; when the cutting operation continues and the molten slag accumulated on the arc-shaped liner 6 located at the front (closest to the cutting area) reaches a certain amount, the negative pressure suction pump is turned off to release the adsorption force on the arc-shaped liner 6; the block drive component 475 drives the top block 47 to push the arc-shaped liner 6 on the receiving pipe 42 forward, so that the arc-shaped liner 6 at the front end of the receiving pipe 42 falls into the liner collection bin 7 in sequence. After the top block 47 is pushed, the block drive 475 drives the top block 47 to retract. The telescopic cylinder 52 drives the feeding plate 51 to press the new arc-shaped liner 6 on the hopper 54 onto the receiving pipe 42. The lower end of the feeding plate 51 is embedded with an electromagnet, which is opened during the lowering process to prevent deflection due to inertia during the pushing process. After the new arc-shaped liner 6 moves into place, the electromagnet is turned off. Then, the telescopic cylinder 52 drives the feeding plate 51 to retract. This process is repeated until all the new arc-shaped liner 6 are laid. At this point, a complete automatic replacement cycle ends, and the device is ready to carry out the next stage of cutting and slag removal operations.

[0056] In addition, to avoid interference, when it is necessary to replace the arc-shaped liner 6, slightly retract the receiving tube 42 to avoid the cutting head, or re-insert the receiving tube 42 after the replacement is completed.

[0057] Compared with the prior art, the technical solution of this application has the following beneficial technical effects: 1. By installing a receiving component at the end of the frame away from the laser cutting equipment, with the receiving pipe located directly below the steel pipe, the receiving pipe is used to collect the waste slag generated during the laser cutting of hollow profiles. Multiple arc-shaped lining blocks are laid on the upper side of the receiving pipe to collect the waste slag, and after collection, they can slide more smoothly into the lining plate storage bin, effectively preventing the molten slag generated during the laser cutting of hollow profiles from adhering to the inner wall of the workpiece, and significantly improving the inner surface quality of the product; 2. The feeding plate is set at the end of the receiving pipe away from the steel pipe, which facilitates the replacement of the arc-shaped liner on the receiving pipe, improving production efficiency and product quality.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser cutting and slag removal device for hollow profiles, comprising a frame (1), a laser cutting device (2) connected to the frame (1), and a steel pipe (3) connected to the laser cutting device (2), characterized in that, The frame (1) is connected to a receiving assembly at one end away from the laser cutting equipment (2). The receiving assembly includes a receiving part (4) and a replacement part (5). The receiving part (4) includes a receiving main seat (41) and a receiving pipe (42) connected to the receiving main seat (41). The receiving pipe (42) is located directly below the steel pipe (3). Multiple arc-shaped lining blocks (6) are laid sequentially from one end to the other on the upper side of the receiving pipe (42). Several negative pressure holes (43) are opened on the receiving pipe (42). The arc-shaped lining blocks (6) are adsorbed and connected to the receiving pipe (42) through the gas in the negative pressure holes (43). The receiving pipe (42) The internal structure is provided with a negative pressure channel (44), which is connected to the negative pressure hole (43). The air inlet end of the negative pressure channel (44) is connected to a connecting groove (45), and the air inlet end of the connecting groove (45) is connected to a negative pressure hose interface (46). The end of the receiving pipe (42) away from the steel pipe (3) is slidably connected to a top block (47), which abuts against the arc-shaped liner (6). The end of the receiving pipe (42) away from the steel pipe (3) is provided with a limit through hole (421). A top connecting block (471) is connected to the top block (47), and a buffer spring bracket (471) is connected to the receiving pipe (42). 2) A limiting slide rod (473) is slidably connected to the buffer spring bracket (472). The limiting slide rod (473) is connected to the top connecting block (471). A buffer spring (474) is sleeved on the limiting slide rod (473). One end of the buffer spring (474) is connected to the buffer spring bracket (472), and the other end of the buffer spring (474) is connected to the top connecting block (471). A liner storage bin (7) is connected to the frame (1). The liner storage bin (7) is located directly below the receiving pipe (42). The replacement part (5) includes a feeding plate (51) located directly above the receiving pipe (42). The feeding plate (51) is located at the end of the receiving pipe (42) away from the steel pipe (3); the replacement part (5) also includes a telescopic cylinder (52) connected to the frame (1), the telescopic cylinder (52) is connected to the feeding plate (51); a hopper (53) is connected to the frame (1), the discharge end of the hopper (53) is connected to a hopper body slide frame (531), the feeding plate (51) is slidably connected to the hopper body slide frame (531), a wedge block (532) is slidably connected to the hopper body slide frame (531), and a wedge block return spring (533) is connected between the wedge block (532) and the hopper body slide frame (531).

2. The laser cutting slag removal device for hollow profiles according to claim 1, characterized in that, It also includes a receiving telescopic component (8), which includes a receiving telescopic seat (81) connected to the frame (1) and a receiving guide rod (82) slidably connected to the receiving telescopic seat (81). The receiving guide rod (82) is connected to the receiving main seat (41). A receiving lifting cylinder (83) is connected to the receiving telescopic seat (81). The telescopic end of the receiving lifting cylinder (83) is connected to the receiving main seat (41).

3. The laser cutting slag removal device for hollow profiles according to claim 1, characterized in that, A block drive (475) is connected to the top connecting block (471), and the block drive (475) is connected to the frame (1).

4. The laser cutting slag removal device for hollow profiles according to claim 1, characterized in that, A push rod (54) is slidably connected to the hopper (53), and a push block (55) is connected to the push rod (54). The push block (55) abuts against the arc-shaped liner (6). A feeding spring (56) is sleeved on the push rod (54). One end of the feeding spring (56) is connected to the push block (55), and the other end of the feeding spring (56) is connected to the hopper (53).

5. The laser cutting slag removal device for hollow profiles according to claim 1, characterized in that, The arc-shaped liner (6) is connected to liner clips (61) at both ends.

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