A laser tube cutting machine

Abstract

This utility model relates to the field of laser tube cutting machine technology and discloses a laser tube cutting machine; it includes a frame and a feeding rack, the feeding rack is disposed on one side of the frame, a support frame is fixed on the inner wall of the feeding rack, and a guide rod, a first guide plate and a second guide plate are respectively installed on the inner wall of the feeding rack. This utility model, through the staggered and gradually lowering design of the feeding rack and the guiding structure, can guide the tube to be transported smoothly and orderly, allowing it to slide smoothly to the processing position. The baffle can block and position the tube, ensuring that it arrives stably at the pushing area. The first motor drives the threaded rod to rotate, driving the push plate to move linearly along the limiting rod, which can realize the horizontal transport of the tube. The protective shell ensures the normal operation of the threaded rod. The overall structure provides stable support for each component, ensuring stable operation of the equipment, and can send the tube into the cutting stage, improving cutting efficiency and quality.

Description

Technical Field

[0001] This utility model relates to the field of laser tube cutting machine technology, specifically a laser tube cutting machine. Background Technology

[0002] A laser tube cutting machine is an industrial device that uses a high-energy-density laser beam to cut metal tubes. It generates a laser beam, which is focused by optical equipment and irradiates the surface of the tube, causing the material to melt and vaporize rapidly. At the same time, auxiliary gas blows away the molten slag, achieving non-contact cutting. This equipment can process various tubes, including round, square, and irregular shapes, and supports cutting at any angle and with complex shapes. The cut is smooth and burr-free. Its advantages include high-efficiency mass production, small heat-affected zone, and low material loss. It is widely used in the fields of automobile manufacturing, aerospace, and building decoration.

[0003] In the overall structure of a laser tube cutting machine, the feeding mechanism plays a crucial role. It is responsible for stably transporting the tube to be cut to the cutting area, ensuring the continuity and stability of the cutting process. However, the positioning of the tube in the existing laser cutting machine is not stable enough during the feeding process. The tube is prone to deviating from the predetermined path and being transported unevenly during the feeding process, which makes it impossible for the tube to reach the cutting position stably, affecting the cutting quality and efficiency. At the same time, it has poor adaptability to tubes of different specifications, which increases the cost of equipment adjustment and replacement. Utility Model Content

[0004] The purpose of this invention is to provide a laser tube cutting machine to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser tube cutting machine, comprising a frame and a feeding rack, wherein the feeding rack is disposed on one side of the frame, a bearing frame is fixed to the inner wall of the feeding rack, and a guide rod, a first guide plate and a second guide plate are respectively installed on the inner wall of the feeding rack, wherein the guide rod, the first guide plate and the second guide plate are staggered and gradually lowered in a structural design; A baffle is fixed to one side of the second guide plate, a pusher is provided on one side of the second guide plate, and a movable part is provided on the top of the support frame; The material conveying mechanism is located on the top of the support frame. The material conveying mechanism includes a mounting frame fixed to the top of the support frame. A first motor is mounted on the outside of the mounting frame. A threaded rod is fixed to the output end of the first motor. A protective shell is provided on the outside of the threaded rod. A push plate is threadedly connected to the outside of the threaded rod.

[0006] Preferably, the material conveying mechanism further includes a limiting rod fixed to the inner wall of the mounting frame, and the inner wall of the push plate is slidably connected to the outer side of the limiting rod.

[0007] Preferably, the pusher includes a first cylinder and a limiting block respectively installed on one side of the second guide plate. The piston rod of the first cylinder is fixed with a top plate, and the outer side of the top plate is slidably connected to the inner wall of the limiting block.

[0008] Preferably, the movable component includes a fixed plate fixed to the bottom of the support frame, a second cylinder is installed at the bottom of the fixed plate, a V-shaped plate is fixed to the piston rod of the second cylinder, a sliding rod is fixed to the bottom of the V-shaped plate, and the outer side of the sliding rod is slidably connected to the inner wall of the fixed plate.

[0009] Preferably, a mounting plate is fixed to the top of the support frame, two sets of pulleys are provided on the top of the mounting plate, a fixing rod is fixed to the outside of the material conveying frame, and a protective plate is installed on the outside of the fixing rod.

[0010] Preferably, a first fixed frame is fixed inside the frame, a limiting plate is provided on one side of the first fixed frame, a roller is slidably connected inside the limiting plate, a second motor is installed on one side of the first fixed frame, a gear set is provided at the output end of the second motor, and the outer side of the gear set is meshed with the outer side of the roller.

[0011] Preferably, a laser cutting machine body is installed inside the frame, a laser cutting head is provided on one side of the laser cutting machine body, and the position of the laser cutting head corresponds to the position of the limiting plate. A ramp is provided inside the frame.

[0012] Preferably, a slide rail is installed on the top of the frame, a protective cover is slidably connected to the outside of the slide rail, a second fixing frame is fixed inside the protective cover, a sleeve is rotatably connected to the inner wall of the second fixing frame, a four-axis clamping plate is installed at one end of the sleeve, and a third motor for driving the sleeve to rotate is installed on one side of the second fixing frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model, through the staggered and progressively lowering design of the conveyor and guide structure, guides the pipe material to be transported smoothly and orderly, allowing it to slide smoothly to the processing position. The baffle can block and position the pipe material, ensuring its stable arrival at the pushing area. The first motor drives the threaded rod to rotate, causing the push plate to move linearly along the limit rod, which can realize the horizontal transport of the pipe material. The protective shell ensures the normal operation of the threaded rod. The overall structure provides stable support for each component, ensuring stable operation of the equipment and enabling the pipe material to be sent into the cutting stage, improving cutting efficiency and quality. Attached Figure Description

[0014] Figure 1 A schematic diagram of a preferred embodiment of the laser tube cutting machine provided by this utility model; Figure 2A schematic diagram of the pusher structure provided by this utility model; Figure 3 A schematic diagram of the material conveying mechanism provided by this utility model; Figure 4 A schematic diagram of the frame structure provided for this utility model; Figure 5 A schematic diagram of the protective cover structure provided by this utility model.

[0015] In the diagram: 1. Frame; 2. Conveying frame; 3. Support frame; 4. Guide rod; 5. First guide plate; 6. Second guide plate; 7. Baffle; 8. Pushing component; 81. First cylinder; 82. Limiting block; 83. Top plate; 9. Moving component; 91. Fixed plate; 92. Second cylinder; 93. V-shaped plate; 94. Slide rod; 10. Conveying mechanism; 101. Mounting frame; 102. First motor; 103. Threaded rod; 104. 105. Push plate; 11. Limiting rod; 12. Mounting plate; 13. Pulley; 14. Fixing rod; 15. Protective plate; 16. First fixing frame; 17. Limiting plate; 18. Roller; 19. Second motor; 20. Gear set; 21. Laser cutting machine body; 22. Laser cutting head; 23. Inclined plate; 24. Slide rail; 25. Protective cover; 26. Second fixing frame; 27. Sleeve; 28. Four-axis clamping plate; 29. ​​Third motor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-5 As shown, a laser tube cutting machine includes a frame 1 and a feeding rack 2. The feeding rack 2 is disposed on one side of the frame 1. A support frame 3 is fixed to the inner wall of the feeding rack 2. Guide rods 4, a first guide plate 5 and a second guide plate 6 are respectively installed on the inner wall of the feeding rack 2. The guide rods 4, the first guide plate 5 and the second guide plate 6 are arranged in an interlaced and progressively lowering structural design.

[0018] The frame 1 serves as the main support frame of the entire laser tube cutting machine, providing an installation foundation and stable structural support for other components, ensuring the overall stability and rigidity of the equipment during operation. The feed rack 2 is used to carry and transport the tubes to be cut, serving as the initial channel for the tubes to enter the cutting area. The support frame 3 provides installation positions for the feed mechanism 10 and the moving parts 9, while also participating in the tube transport and positioning process. The guide rod 4, the first guide plate 5, and the second guide plate 6 are installed on the inner wall of the feed rack 2, forming an interlocking and gradually decreasing structural design to guide the tubes to be transported smoothly and orderly along a predetermined path. The gradually decreasing height design helps the tubes slide smoothly to the subsequent processing position.

[0019] The baffle 7 is fixed to one side of the second guide plate 6. A pusher 8 is provided on one side of the second guide plate 6, and a movable part 9 is provided on the top of the support frame 3.

[0020] The baffle 7 can block and position the pipe, preventing it from deviating from the predetermined position during transportation and ensuring that the pipe reaches the working area of ​​the pusher 8. The pusher 8 can transport the pipe through its internal structure, and the moving part 9 can lift or lower the pipe through its internal structure.

[0021] The material conveying mechanism 10 is disposed on the top of the support frame 3. The material conveying mechanism 10 includes a mounting frame 101 fixed to the top of the support frame 3. A first motor 102 is mounted on the outside of the mounting frame 101. A threaded rod 103 is fixed to the output end of the first motor 102. A protective shell is provided on the outside of the threaded rod 103. A push plate 104 is threadedly connected to the outside of the threaded rod 103. The material conveying mechanism 10 also includes a limiting rod 105 fixed to the inner wall of the mounting frame 101. The inner wall of the push plate 104 is slidably connected to the outside of the limiting rod 105.

[0022] The mounting bracket 101 provides mounting support for the first motor 102 and the threaded rod 103. The first motor 102 serves as a power source, driving the threaded rod 103 to rotate. Driven by the first motor 102, the threaded rod 103 rotates, causing the push plate 104 to move axially along the threaded rod 103 via a threaded connection, thus achieving horizontal conveying of the pipe on the support frame 3. The protective shell protects the threaded rod 103, preventing external debris from affecting its normal operation. The push plate 104, driven by the threaded rod 103, pushes the pipe to move, completing the horizontal conveying task. The limiting rod 105 guides and limits the movement of the push plate 104, ensuring that the push plate 104 can only move in one direction. The push plate moves linearly along the axial direction of the limiting rod 105. When it is necessary to transport the pipe, the first motor 102 is started, and its output end drives the threaded rod 103 to rotate. The protective shell on the outside of the threaded rod 103 can prevent foreign objects from entering and ensure its normal operation. Since the push plate 104 is threadedly connected to the threaded rod 103, and the inner wall of the push plate 104 is slidably connected to the limiting rod 105 fixed on the inner wall of the mounting frame 101, under the guidance and limiting action of the limiting rod 105, the push plate 104 can only move linearly along the axial direction of the limiting rod 105. As the threaded rod 103 rotates, the push plate 104 moves along the axial direction of the threaded rod 103, thereby pushing the pipe on the bearing frame 3 to move horizontally, realizing the task of transporting the pipe in the horizontal direction, and ensuring that the pipe can smoothly enter the subsequent cutting process.

[0023] The pusher 8 includes a first cylinder 81 and a limiting block 82 respectively installed on one side of the second guide plate 6. The piston rod of the first cylinder 81 is fixed with a top plate 83, and the outer side of the top plate 83 is slidably connected to the inner wall of the limiting block 82.

[0024] The first cylinder 81 serves as the power source, driving the top plate 83 to move through the extension and retraction of the piston rod. The limiting block 82 guides and limits the movement of the top plate 83, ensuring its linear motion and pushing the pipe from the second guide plate 6 to the designated position on the support frame 3. Driven by the first cylinder 81, the top plate 83 pushes the pipe from the second guide plate 6 to the subsequent processing position, achieving initial positioning and conveying of the pipe. It should be noted that the first cylinder 81 is used in conjunction with an air compressor, an air tank, a filter pressure reducing valve, a directional control valve, and a flow control valve. During use, the air compressor compresses ambient air to a set pressure and stores it in the air tank. The filter pressure reducing valve further purifies the air and stabilizes the pressure, then delivers it to the control valve through an air pipe. The directional control valve switches the airflow channel according to an electrical signal, determining the extension and retraction direction of the first cylinder 81. The flow control valve adjusts the airflow speed, controlling the movement speed of the first cylinder 81. Compressed air enters the rod chamber or rodless chamber of the first cylinder 81, driving the piston to move. The piston drives the piston rod to output linear reciprocating motion.

[0025] The movable component 9 includes a fixed plate 91 fixed to the bottom of the support frame 3. A second cylinder 92 is installed at the bottom of the fixed plate 91. A V-shaped plate 93 is fixed to the piston rod of the second cylinder 92. A sliding rod 94 is fixed to the bottom of the V-shaped plate 93, and the outer side of the sliding rod 94 is slidably connected to the inner wall of the fixed plate 91.

[0026] The fixed plate 91 is provided as a mounting base for the second cylinder 92. The second cylinder 92 can drive the V-shaped plate 93 to move up and down through the extension and retraction of the piston rod. The V-shaped plate 93 can rise or fall under the drive of the second cylinder 92 to lift or lower the pipe. Together with other components, it can achieve precise positioning and delivery of the pipe. The V-shaped structure helps to better support the pipe. The slide bar 94 can guide the movement of the V-shaped plate 93 and ensure the stability of the vertical up and down movement of the V-shaped plate 93. It should be noted that the working principle of the second cylinder 92 is the same as that of the first cylinder 81 mentioned above, and will not be repeated here.

[0027] The top of the support frame 3 is fixed with a mounting plate 11, and the top of the mounting plate 11 is provided with two sets of pulleys 12. The outside of the material conveying frame 2 is fixed with a fixing rod 13, and a protective plate 14 is installed on the outside of the fixing rod 13.

[0028] Mounting plate 11 is fixed to the top of support frame 3 to provide an installation position for pulley 12. The pulley 12 is set to assist the conveying of pipes on support frame 3, reduce the friction between pipes and support frame 3, and make the pipes move more smoothly. Fixing rod 13 is set to provide installation support for protective plate 14. The protective plate 14 can play a safety protection role, preventing pipes or other objects from flying out and injuring people during equipment operation, and ensuring the safety of operators.

[0029] A first fixed frame 15 is fixed inside the frame 1. A limit plate 16 is provided on one side of the first fixed frame 15. A roller 17 is slidably connected inside the limit plate 16. A second motor 18 is installed on one side of the first fixed frame 15. A gear set 19 is provided at the output end of the second motor 18, and the outer side of the gear set 19 is meshed with the outer side of the roller 17.

[0030] The first fixed frame 15 is set to provide an installation base for the limiting plate 16 and the second motor 18. The limiting plate 16 is set to restrict the position of the pipe to ensure that the pipe remains stable during the cutting process, while allowing the pipe to roll under the drive of the roller 17. The roller 17 slides in the limiting plate 16 and is connected to the gear set 19. Driven by the second motor 18, it rotates and drives the pipe to rotate around its own axis to meet the needs of the laser cutting head 21 to cut the pipe at different positions. The second motor 18 serves as a power source and drives the roller 17 to rotate through the gear set 19. The gear set 19 is set to transmit the rotational power of the second motor 18 to the roller 17 to realize the power transmission.

[0031] The frame 1 houses the laser cutting machine body 20, and a laser cutting head 21 is provided on one side of the laser cutting machine body 20. The position of the laser cutting head 21 corresponds to the position of the limiting plate 16. The frame 1 is also equipped with a ramp plate 22.

[0032] The laser cutting machine body 20 is the core equipment of the entire laser tube cutting machine, used to provide the high-energy laser source required for laser cutting. The laser cutting head 21 is designed to focus the laser generated by the laser cutting machine body 20 onto the tube, achieving tube cutting. During tube cutting, the laser cutting machine body 20 generates a high-energy-density laser beam through its internal laser generator. The laser cutting head 21 focuses this laser beam onto the tube surface, causing the local material to rapidly melt and vaporize. Simultaneously, oxygen is ejected from the cutting head to blow away the slag produced by melting and vaporization, thus achieving non-contact cutting of the tube. The 22 setting is used to receive the finished pipes that fall after cutting, allowing them to slide down the ramp 22 to the designated collection position for easy cleaning and collection. It should be noted that the working principle of the laser cutting machine body 20 and the laser cutting head 21 in this case is the same as the working principle of the laser pipe cutting assembly in a laser pipe cutting machine with authorized case application number CN202422785745.5. The working principle of the laser pipe cutting assembly was not specifically described in that comparative case. Therefore, it can be seen that the working principle of the laser cutting machine body 20 and the laser cutting head 21 in this case is prior art, and will not be described in detail here.

[0033] A slide rail 23 is mounted on the top of the frame 1. A protective cover 24 is slidably connected to the outside of the slide rail 23. A second fixed frame 25 is fixed inside the protective cover 24. A sleeve 26 is rotatably connected to the inner wall of the second fixed frame 25. A four-axis clamping plate 27 is mounted on one end of the sleeve 26. A third motor 28 for driving the sleeve 26 to rotate is mounted on one side of the second fixed frame 25.

[0034] The slide rail 23 provides a sliding track for the protective cover 24, allowing it to move smoothly along the slide rail 23. During equipment operation, the protective cover 24 can move above the cutting area to provide protection, preventing sparks and debris from flying out during laser cutting, ensuring operator safety, and reducing interference from the external environment. The second fixed bracket 25 provides mounting support for the sleeve 26 and the third motor 28. The sleeve 26 supports and drives the rotation of the four-axis clamping plate 27, which clamps the pipe. Four-axis linkage allows for adjustment and positioning of the pipe in multiple directions, meeting the needs of complex cutting processes. The third motor 28 drives the sleeve 26 to rotate, thereby rotating the four-axis clamping plate 27 and the clamped pipe, working in conjunction with the laser cutting head 21 to complete omnidirectional cutting of the pipe. It should be noted that the four-axis clamping plate 27 consists of a four-axis indexing turntable, hydraulic equipment, clamping body, and positioning components. Specifically, the clamping body is rigidly connected to the indexing turntable via flanges. It integrates multiple single-acting hydraulic cylinders, with the cylinder body and clamping body fixed by threads or pins. The top of the hydraulic cylinder piston rod is designed with a V-groove or arc-shaped pressure block, and the bottom is equipped with a return spring, forming a closed-loop structure from hydraulic drive to spring return. The positioning component adopts a three-point convex circle support structure. The workpiece bottom is suspended on the clamping body positioning surface by three equidistantly distributed hemispherical bosses, which both restricts the workpiece's planar freedom and reduces vibration through point contact. An annular stress-reducing groove is opened on the surface of the clamping body to reduce stress concentration under clamping force. Simultaneously, a chip removal through-hole is provided to facilitate automatic chip discharge. During use, the hydraulic station supplies high-pressure oil to the clamping body's oil inlet through pipelines. After the oil enters the hydraulic cylinder, it pushes the piston rod downwards, compressing the spring and causing the pressure block to press tightly against the pipe surface. At this time, the pipe is fully positioned under the combined action of the three-point convex circle and the pressure block, restricting six degrees of freedom. After processing, the hydraulic equipment is depressurized, the spring recovers its deformation, pushing the piston rod to return to its original position, and the pipe automatically releases.

[0035] Working Principle: When the laser tube cutting machine is working, the tube to be cut is first placed on the conveyor frame 2. Guided by the staggered and gradually lowering structure of the guide rod 4, the first guide plate 5, and the second guide plate 6, the tube slides smoothly and orderly to one side of the second guide plate 6, where it is blocked and positioned by the baffle 7, ensuring that the tube reaches the working area of ​​the pusher 8. Then, the first cylinder 81 is activated, and the piston rod of the first cylinder 81 extends and retracts, driving the top plate 83 to move linearly under the guidance and limitation of the limiting block 82, pushing the tube from the second guide plate 6 onto the V-shaped plate 93 fixed on the top of the support frame 3. Next, the second cylinder 92 is activated, and the piston rod drives the V-shaped plate 93 to descend under the guidance of the slide rod 94, lifting the tube and conveying it between the two sets of pulleys 12 on the top of the support frame 3. After that, the conveying mechanism 10 starts working, starting the first motor 102, whose output end drives the threaded rod 103 to rotate, and the tube moves to the limit rod 105. Guided and limited, the push plate 104 moves linearly along the axial direction of the threaded rod 103, pushing the pipe on the support frame 3 to move horizontally. During the movement, the pulley 12 assists the pipe to move and reduces friction. When the pipe moves to the appropriate position, the second motor 18 on the first fixed frame 15 drives the roller 17 to rotate in the limiting plate 16 through the gear set 19, causing the pipe to rotate around its own axis. At the same time, the protective cover 24 is moved to the appropriate position along the slide rail 23. Then, the pipe is clamped by the four-axis clamping plate 27. The third motor 28 drives the sleeve 26 to rotate, causing the four-axis clamping plate 27 and the pipe to rotate. At this time, the laser cutting machine body 20 provides a high-energy laser source, and the laser cutting head 21 focuses the laser onto the pipe. With the rotation and movement of the pipe, an all-round cut is completed. After the cut is completed, the finished pipe falls onto the ramp plate 22 and slides down the ramp to the designated collection position, which facilitates the collection of the pipe.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A laser tube cutting machine comprising a frame (1), characterized in that, Also includes: A material conveying frame (2) is set on one side of the frame (1). A bearing frame (3) is fixed on the inner wall of the material conveying frame (2). A guide rod (4), a first guide plate (5) and a second guide plate (6) are respectively installed on the inner wall of the material conveying frame (2). The guide rod (4), the first guide plate (5) and the second guide plate (6) are designed to be staggered and gradually lowered. A baffle (7) is fixed to one side of the second guide plate (6), and a pusher (8) is provided on one side of the second guide plate (6). A movable part (9) is provided on the top of the support frame (3). The material conveying mechanism (10) is located on the top of the support frame (3). The material conveying mechanism (10) includes a mounting frame (101) fixed on the top of the support frame (3). A first motor (102) is mounted on the outside of the mounting frame (101). A threaded rod (103) is fixed at the output end of the first motor (102). A protective shell is provided on the outside of the threaded rod (103). A push plate (104) is threadedly connected to the outside of the threaded rod (103).

2. The laser tube cutting machine according to claim 1, characterized in that: The material conveying mechanism (10) also includes a limiting rod (105) fixed to the inner wall of the mounting frame (101), and the inner wall of the push plate (104) is slidably connected to the outer side of the limiting rod (105).

3. A laser tube cutting machine according to claim 1, characterized in that: The pusher (8) includes a first cylinder (81) and a limiting block (82) respectively installed on one side of the second guide plate (6). The piston rod of the first cylinder (81) is fixed with a top plate (83), and the outer side of the top plate (83) is slidably connected to the inner wall of the limiting block (82).

4. A laser tube cutting machine according to claim 1, characterized in that: The movable component (9) includes a fixed plate (91) fixed to the bottom of the support frame (3). A second cylinder (92) is installed at the bottom of the fixed plate (91). A V-shaped plate (93) is fixed to the piston rod of the second cylinder (92). A sliding rod (94) is fixed to the bottom of the V-shaped plate (93), and the outer side of the sliding rod (94) is slidably connected to the inner wall of the fixed plate (91).

5. A laser tube cutting machine according to claim 1, characterized in that: The top of the support frame (3) is fixed with an installation plate (11), and the top of the installation plate (11) is provided with two sets of pulleys (12). The outside of the material conveying frame (2) is fixed with a fixing rod (13), and the outside of the fixing rod (13) is equipped with a protective plate (14).

6. A laser tube cutting machine according to claim 1, characterized in that: The frame (1) is fixed with a first fixed frame (15) inside. A limiting plate (16) is provided on one side of the first fixed frame (15). A roller (17) is slidably connected inside the limiting plate (16). A second motor (18) is installed on one side of the first fixed frame (15). A gear set (19) is provided at the output end of the second motor (18), and the outer side of the gear set (19) is meshed with the outer side of the roller (17).

7. A laser tube cutting machine according to claim 6, characterized in that: The frame (1) is equipped with a laser cutting machine body (20), and a laser cutting head (21) is provided on one side of the laser cutting machine body (20). The position of the laser cutting head (21) corresponds to the position of the limiting plate (16). The frame (1) is equipped with a ramp plate (22).

8. A laser tube cutting machine according to claim 1, characterized in that: The top of the frame (1) is equipped with a slide rail (23), and a protective cover (24) is slidably connected to the outside of the slide rail (23). A second fixed frame (25) is fixed inside the protective cover (24). A sleeve (26) is rotatably connected to the inner wall of the second fixed frame (25). A four-axis clamping plate (27) is installed at one end of the sleeve (26), and a third motor (28) for driving the sleeve (26) to rotate is installed on one side of the second fixed frame (25).

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