A collision-resistant laser tube cutting machine

Abstract

This utility model relates to the field of laser cutting and discloses a collision-resistant laser tube cutting machine, including a bed, a gantry, a laser cutting assembly, a first chuck structure, and a second chuck structure. The bed is provided with a first limiting seat and a second limiting seat. The first chuck structure has a first limiting block located between the two first limiting seats. Each of the two first limiting seats has a telescopic buffer head facing the first limiting block, and the distance between the two telescopic buffer heads is the maximum travel distance of the first limiting block. The second chuck structure has a second limiting block located between the two second limiting seats. Each of the two second limiting seats has a buffer block facing the second limiting block, and the distance between the two buffer blocks is the maximum travel distance of the second limiting block. Through the above configuration, the safe travel range of the first and second chuck structures is precisely limited, avoiding overtravel collisions and protecting the corresponding chuck structures and internal mechanisms.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting, and in particular to an anti-collision laser tube cutting machine. Background Technology

[0002] Chuck-type laser tube cutting machines primarily utilize a chuck to clamp the tube. The chuck then moves and rotates the tube, allowing it to be processed and cut under the influence of a high-energy laser emitted by the laser cutting assembly. Existing two-chuck laser tube cutting machines typically incorporate photoelectric sensors, such as stroke sensors, to detect the chuck's travel distance. While the chuck's movement is programmed, errors during debugging or program malfunctions can still cause deviations in the chuck's travel distance, leading to collisions and equipment damage.

[0003] It is evident that existing technologies still need improvement and enhancement. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of this utility model is to provide an anti-collision laser tube cutting machine, which aims to solve the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A collision-resistant laser tube cutting machine includes a bed, a gantry frame disposed at the front end of the bed, a laser cutting assembly disposed on the gantry frame and capable of reciprocating along the left-right and up-down directions of the gantry frame, and a first chuck structure and a second chuck structure capable of reciprocating along the front-back direction of the bed, the first chuck structure being located in front of the second chuck structure; the bed is provided with two first limiting seats and a second limiting seat disposed along its front-back direction; both first limiting seats are located in front of both second limiting seats; the first chuck structure is provided with a first limiting block located between the two first limiting seats, and each of the two first limiting seats is provided with a telescopic buffer head facing the first limiting block, the distance between the two telescopic buffer heads being the maximum travel distance of the first limiting block; the second chuck structure is provided with a second limiting block located between the two second limiting seats, and each of the two second limiting seats is provided with a buffer block facing the second limiting block, the distance between the two buffer blocks being the maximum travel distance of the second limiting block.

[0007] The anti-collision laser tube cutting machine, wherein the first chuck structure includes a first side plate, a first chuck disposed on the operating side of the first side plate, and a drive cylinder disposed on the operating side of the bed and used to drive the first side plate to reciprocate along the front-back direction of the bed; the output end of the drive cylinder is fixedly connected to the side wall of the first side plate; the first limiting block is disposed on the side wall of the first side plate facing the bed.

[0008] The anti-collision laser tube cutting machine is provided with two first trigger plates arranged along its front-rear direction on the bed, a first connecting plate is provided on the side wall of the first side plate, a first limit switch is provided on the first connecting plate, the first limit switch is located between the two first trigger plates, and both first trigger plates are used to trigger the first limit switch.

[0009] The anti-collision laser tube cutting machine, wherein the second chuck structure includes a second side plate, a second chuck and a drive motor disposed on the operating side of the second side plate, a drive gear disposed on the output end of the drive motor, and a drive rack meshing with the drive gear; the drive rack is disposed along the front-rear direction of the bed; the bed is also provided with a movable guide rail extending along its front-rear direction, and movable sliders that are slidably connected to the movable guide rail are disposed on the side walls of the first side plate and the second side plate facing the bed.

[0010] The anti-collision laser tube cutting machine includes a second chuck protective cover on the outer cover of the second side plate, and a tube clearance opening in front of the second chuck protective cover; a second limit switch is provided on the side wall of the second side plate facing the bed; two second trigger plates are provided on the bed along its front-back direction, the second limit switch is located between the two second trigger plates, and both second trigger plates are used to trigger the second limit switch.

[0011] The anti-collision laser tube cutting machine is provided with an oil supply can on both the bed and the second side plate. The oil supply can is used to provide lubricating oil to the moving slider through a connector.

[0012] In the aforementioned anti-collision laser tube cutting machine, an oil collection groove extending along the front-rear direction of the bed is provided below the moving guide rail, and an oil outlet is provided at the end of the oil collection groove near the second chuck.

[0013] The anti-collision laser tube cutting machine includes a protective housing surrounding the gantry frame, with the laser cutting assembly located inside the protective housing and its cutting area situated within it. The rear side wall of the protective housing has a clearance hole for the second chuck structure to pass through. The operating side of the protective housing has a maintenance door that can move forward and backward.

[0014] The anti-collision laser tube cutting machine includes an exhaust box inside the protective housing, a dust removal hole on the exhaust box, the exhaust box being located below the laser cutting assembly and connected to an exhaust pipe, an exhaust hole on the bed, and the exhaust pipe being located in the exhaust hole.

[0015] The aforementioned anti-collision laser tube cutting machine includes a bed composed of multiple hollow square tubes and an outer plate, with a wiring cavity formed between the square tubes and the outer plate. A wire groove is provided on the side wall of the bed away from the operating side, and the wire groove communicates with the wiring cavity. An electrical cabinet is provided on the side wall of the protective housing away from the operating side, and the wire groove communicates with the electrical cabinet.

[0016] Beneficial effects:

[0017] This invention provides a collision-resistant laser tube cutting machine. By setting up a first and second limiting seat, a stable travel reference is provided for the first and second limiting blocks, precisely limiting the safe movement range of the first and second chuck structures and preventing overtravel collisions. Through the provision of a telescopic buffer head and buffer block, when the first or second chuck structure overtravels, the corresponding limiting block contacts the buffer component first, transmitting the impact force to protect the corresponding chuck structure and its internal mechanisms. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a collision-resistant laser tube cutting machine. Figure 1 .

[0019] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0020] Figure 3 for Figure 1 Enlarged view of section B in the middle.

[0021] Figure 4 Schematic diagram of the first chuck structure and the second chuck structure Figure 1 .

[0022] Figure 5 Schematic diagram of the first chuck structure and the second chuck structure Figure 2 .

[0023] Figure 6 A schematic diagram of the structure of a collision-resistant laser tube cutting machine. Figure 2 .

[0024] Key component symbols: 1-Bed, 11-Moving guide rail, 12-Moving slider, 13-Outer plate, 14-Wire trough, 15-Electrical cabinet, 2-Gantry frame, 21-Protective housing, 22-Maintenance door, 3-Laser cutting assembly, 4-First chuck structure, 41-First side mounting plate, 42-First chuck, 43-Drive cylinder, 44-First trigger plate, 45-First connecting plate, 46-First limit switch, 5-Second chuck structure, 51-Second side mounting plate, 52-Second chuck 53-Drive motor, 54-Drive gear, 55-Drive rack, 56-Second limit switch, 57-Second trigger plate, 58-Second chuck protective cover, 61-First limit seat, 62-First limit block, 63-Telescopic buffer head, 71-Second limit seat, 72-Second limit block, 73-Buffer block, 81-Oil supply can, 82-Pipe distributor, 83-Oil collection trough, 84-Oil outlet, 91-Exhaust box, 92-Exhaust pipe, 93-Exhaust hole, 10-Support mechanism. Detailed Implementation

[0025] This utility model provides an anti-collision laser tube cutting machine. To make the purpose, technical solution, and effects of this utility model clearer and more explicit, the following describes this utility model in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit the scope of protection of this utility model.

[0026] Please see Figures 1-5This utility model provides an anti-collision laser tube cutting machine, including a bed 1, a gantry frame 2 disposed at the front end of the bed 1, a laser cutting assembly 3 disposed on the gantry frame 2 and capable of reciprocating along the left-right and up-down directions of the gantry frame 2 (only the drive mechanism for mounting the laser cutting head is shown in the figure; this drive mechanism can achieve left-right movement through a motor, gear, and rack; and achieve up-down movement through a motor, lead screw, and nut seat, which is existing technology), and a first chuck structure 4 and a second chuck structure 5 capable of reciprocating along the front-back direction of the bed 1, with the first chuck structure 4 located in front of the second chuck structure 5; the bed 1 is provided with two first limiting seats 61 and second limiting seats 71 disposed along its front-back direction. Both first limiting seats 61 are located in front of both second limiting seats 71; a first limiting block 62 is provided on the first chuck structure 4 between the two first limiting seats 61, and each of the two first limiting seats 61 is provided with a telescopic buffer head 63 facing the first limiting block 62, the distance between the two telescopic buffer heads 63 being the maximum travel of the first limiting block 62; a second limiting block 72 is provided on the second chuck structure 5 between the two second limiting seats 71, and each of the two second limiting seats 71 is provided with a buffer block 73 facing the second limiting block 72, the distance between the two buffer blocks 73 being the maximum travel of the second limiting block 72.

[0027] In practical applications, this anti-collision laser tube cutting machine can cut tubes with a diagonal of ≤120mm and a length of ≤6500mm. Please refer to [link / reference]. Figure 1 The anti-collision laser tube cutting machine is also equipped with three support mechanisms 10, and can also be equipped with a semi-automatic or automatic feeding rack. Efficient and accurate feeding can be achieved with simple manual operation. The feeding rack feeds the tube to be processed between the first chuck structure 4 and the second chuck structure 5, and clamps and fixes it there. The three support mechanisms 10 provide follow-up support for the tube. The second chuck structure 5, located at the rear, continuously pushes the tube towards the first chuck structure 4 (front). Once the tube moves to the processing and cutting area, the laser cutting component 3 processes and cuts the tube.

[0028] Specifically, the telescopic buffer head 63 incorporates an elastic element such as a spring, which remains extended when not compressed. Its extended length, relative to the initial distance between it and the first limiting block 62, provides a safety margin for the normal movement of the first chuck structure 4. When the first chuck structure 4 moves towards the first limiting seat 61 on one side due to overtravel, the first limiting block 62 first contacts the corresponding telescopic buffer head 63. As the first chuck structure 4 continues to move, the telescopic buffer head 63 is compressed and contracted. The elastic element absorbs the kinetic energy of the first chuck structure 4's movement through deformation, slowing its movement and preventing direct rigid collisions between the first chuck structure 4 and the first limiting seat 61 or the bed 1 structure, thus reducing mechanical impact damage.

[0029] The buffer block 73 is made of a highly elastic material such as polyurethane, high-strength rubber, or silicone. It is fixed to the second limiting seat 71, forming a rigid boundary for the movement of the second chuck structure 5. The distance between the two buffer blocks 73 is the maximum travel of the second limiting block 72, directly limiting the range of movement of the second chuck structure 5. When the second chuck structure 5 moves to one side of the second limiting seat 71 due to overtravel, the second limiting block 72 directly contacts the buffer block 73. The buffer block 73 prevents the second chuck structure 5 from continuing to move, avoiding it from breaking through the safety boundary and colliding with the rear end structure of the bed 1 or the first chuck structure 4. At the same time, the elastic material of the buffer block 73 absorbs the impact force of the movement of the second chuck structure 5 through its own deformation, avoiding wear caused by the rigid contact between the second limiting block 72 and the second limiting seat 71, and extending the service life of the anti-collision structure.

[0030] In the aforementioned anti-collision laser tube cutting machine, the first limiting seat 61 and the second limiting seat 71 provide a stable travel reference for the first limiting block 62 and the second limiting block 72, precisely limiting the safe movement range of the first chuck structure 4 and the second chuck structure 5, and preventing overtravel collisions. The telescopic buffer head 63 and the buffer block 73, when the first chuck structure 4 or the second chuck structure 5 overtravels, ensure that the corresponding limiting block contacts the buffer component first, transmitting the impact force to protect the corresponding chuck structure and internal mechanisms.

[0031] Please see Figure 4 and Figure 5In some embodiments, the first chuck structure 4 includes a first side plate 41, a first chuck 42 disposed on the operating side of the first side plate 41, and a drive cylinder 43 disposed on the operating side of the bed 1 and used to drive the first side plate 41 to reciprocate along the front-back direction of the bed 1; the output end of the drive cylinder 43 is fixedly connected to the side wall of the first side plate 41; the first limiting block 62 is disposed on the side wall of the first side plate 41 facing the bed 1. Specifically, the first chuck structure 4 also includes a rotary motor for driving the first chuck 42 to rotate. When the first chuck structure 4 is working, the drive cylinder 43 first provides power. When the drive cylinder 43 receives the movement command from the control system, it will drive the first side plate 41 to reciprocate along the front-back direction of the bed 1 through the extension and retraction action of the output end. When the first side plate 41 moves, it will simultaneously drive the first chuck 42 to move, thereby realizing the clamping, movement and feeding of the tube by the first chuck 42, meeting the needs of tube position adjustment during laser cutting. The first limiting block 62 is set on the side wall of the first side hanging plate 41 facing the bed 1, so the first limiting block 62 will move synchronously with the first side hanging plate 41 and the first chuck 42.

[0032] Please see Figure 4 and Figure 5 In some embodiments, the bed 1 is provided with two first trigger plates 44 arranged along its front-rear direction. A first connecting plate 45 is provided on the side wall of the first side mounting plate 41, and a first limit switch 46 is provided on the first connecting plate 45. The first limit switch 46 is located between the two first trigger plates 44, and both first trigger plates 44 are used to trigger the first limit switch 46. When the first chuck 42 needs to move forward to a preset processing position, the first limit switch 46 moves forward synchronously with the side mounting plate. If it moves to a position close to the front first trigger plate 44, the first trigger plate 44 will contact the sensing end of the first limit switch 46, triggering the switch to send a signal. After receiving the signal, the control system will control the drive cylinder 43 to stop running. Similarly, when the first chuck 42 moves backward to a position close to the rear first trigger plate 44, the rear first trigger plate 44 triggers the first limit switch 46, and the system also achieves precise positioning by stopping operation.

[0033] Please see Figure 4 and Figure 5In some embodiments, the second chuck structure 5 includes a second side plate 51, a second chuck 52 disposed on the operating side of the second side plate 51, a drive motor 53, a drive gear 54 disposed on the output end of the drive motor 53, and a drive rack 55 meshing with the drive gear 54; the drive rack 55 is disposed along the front-rear direction of the bed 1; the bed 1 is also provided with a moving guide rail 11 extending along its front-rear direction, and both the first side plate 41 and the second side plate 51 are provided with moving sliders 12 slidably connected to the moving guide rail 11 on their side walls facing the bed 1. Since the second chuck 52 has a large travel range, the drive motor 53 is used to drive the drive gear 54 to rotate, and the drive rack 55 is used to provide movement guidance for the drive gear 54, so that the second side plate 51 and the second chuck 52 can move smoothly back and forth along the front-rear direction of the bed 1. The movable guide rail 11 is configured so that the first chuck structure 4 and the second chuck structure 5 share the same set of movable guide rails 11, which can ensure that the horizontality of the moving paths of the first chuck structure 4 and the second chuck structure 5 is consistent, and can also reduce manufacturing costs. Specifically, the second chuck structure 5 also includes a rotary motor for driving the second chuck 52 to rotate.

[0034] Please see Figure 2 In some embodiments, the outer cover of the second side mounting plate 51 is provided with a second chuck protective cover 58, and a pipe clearance opening is provided in front of the second chuck protective cover 58; please refer to Figure 3 Figure 5 A second limit switch 56 is provided on the side wall of the second side plate 51 facing the bed 1. Two second trigger plates 57 are provided on the bed 1 along its front-rear direction. The second limit switch 56 is located between the two second trigger plates 57, and both second trigger plates 57 are used to trigger the second limit switch 56. A second chuck protective cover 58 is provided outside the second side plate 51. During laser processing, the tubing passes through the tubing clearance opening in front of the second chuck protective cover 58 and is clamped by the second chuck 52. The second chuck protective cover 58 can block sparks and dust particles generated during processing, preventing their adhesion, reducing wear on parts, and extending service life. When the second chuck 52 moves, the second limit switch 56 moves synchronously with the second side plate 51, initially located between the two second trigger plates 57. When the second chuck 52 moves forward and backward to approach the second trigger piece 57 on the corresponding side, the second trigger piece 57 senses the second limit switch 56 and sends a signal to the control system. The system controls the drive motor 53 to adjust the speed to achieve precise positioning. If there is an overtravel tendency, the second trigger piece 57 fully triggers the second limit switch 56, and the system immediately controls the drive motor 53 to stop. With the anti-collision structure of the second limit block 72 and the second limit seat 71, the movement safety of the second chuck 52 is doubled.

[0035] Please see Figure 5 In some embodiments, both the bed 1 and the second side mounting plate 51 are equipped with oil supply cans 81, which are used to supply lubricating oil to the movable slider 12 through a connector. A pipe distributor 82 is also provided, with the oil supply can 81 and the pipe distributor 82 connected by a pipe, and the pipe distributor 82 and the movable slider 12 connected by a pipe. The oil supply can 81 serves as a lubricating oil storage carrier, pre-storing a sufficient amount of lubricating oil. During oil supply, the oil supply can 81 is connected to the pipe distributor 82 through a pipe, and the lubricating oil is first transported along the pipe to the pipe distributor 82; the pipe distributor 82 serves to divert and centrally collect the pipes. Subsequently, the lubricating oil is delivered to the movable slider 12 through the output pipe of the pipe distributor 82, providing continuous lubrication to the sliding contact surfaces of the movable slider 12 and the movable guide rail 11, reducing frictional loss between them. The oil supply system not only ensures the lubrication effect of the moving slider 12 and the moving guide rail 11, maintaining the stability and accuracy of the movement of the first chuck structure 4 and the second chuck structure 5, but also reduces the frequency of stopping to add lubricating oil, thereby improving the overall processing efficiency of the equipment.

[0036] Please see Figure 3 and Figure 5 In some embodiments, an oil collection groove 83 extending along the front-rear direction of the bed 1 is provided below the moving guide rail 11, and an oil outlet 84 is provided at the end of the oil collection groove 83 near the second chuck 52. The oil collection groove 83 is mainly used to collect excess lubricating oil dripping after the moving slider 12 and the guide rail are lubricated, preventing lubricating oil from flowing randomly and contaminating the bed 1, corroding equipment parts, or affecting the operation of other components. The lubricating oil in the oil collection groove 83 is finally discharged or recycled through the oil outlet 84, which not only achieves orderly management of lubricating oil, but also reduces the workload of equipment cleaning and maintenance, and ensures a clean operating environment for the equipment.

[0037] Please see Figure 1 and Figure 2 In some embodiments, a protective enclosure 21 is provided around the gantry 2, and the laser cutting assembly 3 is located inside the protective enclosure 21, with the cutting area of ​​the laser cutting assembly 3 situated within the protective enclosure 21. A clearance hole is provided on the rear side wall of the protective enclosure 21 for the second chuck structure 5 to pass through. A maintenance door 22 that can move back and forth is provided on the operating side of the protective enclosure 21. The protective enclosure 21 surrounds the gantry 2, enclosing the laser cutting assembly 3 and the cutting area, blocking the strong light, sparks, and dust generated during laser cutting, preventing injury to operators, and preventing impurities from interfering with cutting accuracy. The maintenance door 22 of the protective enclosure 21 can move back and forth; it is normally closed for protection, but when the laser cutting assembly 3 needs maintenance, the enclosure can be opened through the movable maintenance door 22, facilitating operator access for maintenance, thus balancing protection and ease of maintenance.

[0038] Please see Figure 2 and Figure 5 In some embodiments, the protective housing 21 is equipped with an exhaust box 91, which has dust removal holes. The exhaust box 91 is located below the laser cutting assembly 3 and is connected to an exhaust pipe 92. The bed 1 has an exhaust hole 93, and the exhaust pipe 92 is located in the exhaust hole 93. The exhaust box 91 quickly collects dust and exhaust gas generated by laser cutting through the dust removal holes. The exhaust box 91 is connected to the exhaust pipe 92 located in the exhaust hole 93 of the bed 1. Under the negative pressure of the external exhaust equipment, the collected dust and exhaust gas are discharged from the exhaust hole 93 of the bed 1 through the exhaust pipe 92, avoiding the accumulation of pollutants in the protective housing 21. This ensures the cleanliness of the cutting area, reduces contamination of the laser cutting assembly 3, improves the equipment operating environment, and reduces the risk of operators inhaling harmful gases.

[0039] Please see Figure 6 In some embodiments, the bed 1 is composed of multiple hollow square tubes and an outer plate 13, with a wiring cavity formed between the square tubes and the outer plate 13. A wire trough 14 is provided on the side wall of the bed 1 away from the operating side, and the wire trough 14 communicates with the wiring cavity. An electrical cabinet 15 is provided on the side wall of the protective housing 21 away from the operating side, and the wire trough 14 communicates with the electrical cabinet 15. The formation of the wiring cavity allows for the centralized storage of the required air pipes and cables, preventing them from being exposed and damaged by collisions or interfering with the operation of other components. The cables can be introduced from the wiring cavity into the wire trough 14, which in turn communicates with the electrical cabinet 15, enabling the cables to be systematically connected to the control elements within the electrical cabinet 15. This achieves a neat routing of air pipes and cables from the bed 1 to the electrical cabinet 15, facilitating cable maintenance and ensuring the safety of the equipment's electrical and pneumatic connections.

[0040] In summary, this utility model, through the provision of the first limiting seat 61 and the second limiting seat 71, provides a stable travel reference for the first limiting block 62 and the second limiting block 72, precisely limiting the safe movement range of the first chuck structure 4 and the second chuck structure 5, and avoiding overtravel collisions. Through the provision of the telescopic buffer head 63 and the buffer block 73, when the first chuck structure 4 or the second chuck structure 5 overtravels, the corresponding limiting block contacts the buffer component first, transmitting the impact force to protect the corresponding chuck structure and its internal mechanisms.

[0041] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] Furthermore, the terms "first," "second," and "third" 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," "second," or "third" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of this utility model.

Claims

1. A laser pipe cutting machine with anti-collision function, comprising a bed, a gantry arranged at the front end of the bed, a laser cutting assembly arranged on the gantry and capable of reciprocating in the left-right and up-down directions of the gantry, and a first chuck structure and a second chuck structure capable of reciprocating in the front-rear direction of the bed, the first chuck structure being located in front of the second chuck structure; characterized in that, The bed frame is provided with two first limiting seats and second limiting seats arranged in a front-rear direction; both first limiting seats are located in front of both second limiting seats; the first chuck structure is provided with a first limiting block located between the two first limiting seats, and each of the two first limiting seats is provided with a telescopic buffer head facing the first limiting block, the distance between the two telescopic buffer heads being the maximum travel of the first limiting block; the second chuck structure is provided with a second limiting block located between the two second limiting seats, and each of the two second limiting seats is provided with a buffer block facing the second limiting block, the distance between the two buffer blocks being the maximum travel of the second limiting block.

2. The collision-avoiding laser pipe cutting machine according to claim 1, wherein, The first chuck structure includes a first side plate, a first chuck disposed on the operating side of the first side plate, and a drive cylinder disposed on the operating side of the bed and used to drive the first side plate to reciprocate along the front-back direction of the bed; the output end of the drive cylinder is fixedly connected to the side wall of the first side plate; the first limiting block is disposed on the side wall of the first side plate facing the bed.

3. The anti-collision laser tube cutting machine according to claim 2, characterized in that, The bed frame is provided with two first trigger plates arranged in the front-to-back direction. The side wall of the first side plate is provided with a first connecting plate. The first connecting plate is provided with a first limit switch. The first limit switch is located between the two first trigger plates, and both first trigger plates are used to trigger the first limit switch.

4. The anti-collision laser tube cutting machine according to claim 2, characterized in that, The second chuck structure includes a second side plate, a second chuck and a drive motor disposed on the operating side of the second side plate, a drive gear disposed on the output end of the drive motor, and a drive rack meshing with the drive gear; the drive rack is disposed along the front-rear direction of the bed; the bed is also provided with a movable guide rail extending along its front-rear direction, and movable sliders that are slidably connected to the movable guide rail are disposed on the side walls of the first side plate and the second side plate facing the bed.

5. The anti-collision laser tube cutting machine according to claim 4, characterized in that, The outer cover of the second side panel is provided with a second chuck protective cover, and a pipe clearance opening is provided in front of the second chuck protective cover; a second limit switch is provided on the side wall of the second side panel facing the bed; two second trigger pieces are provided on the bed along its front-back direction, the second limit switch is located between the two second trigger pieces, and both second trigger pieces are used to trigger the second limit switch.

6. The anti-collision laser tube cutting machine according to claim 4, characterized in that, Both the bed and the second side plate are equipped with oil supply cans, which are used to supply lubricating oil to the moving slider through a connector.

7. The anti-collision laser tube cutting machine according to claim 6, characterized in that, Below the moving guide rail is an oil collection groove extending along the front-rear direction of the bed, and an oil outlet is provided at the end of the oil collection groove near the second chuck.

8. The anti-collision laser tube cutting machine according to claim 1, characterized in that, The gantry is surrounded by a protective enclosure, and the laser cutting assembly is located inside the protective enclosure. The cutting area of ​​the laser cutting assembly is located within the protective enclosure. The rear side wall of the protective enclosure has a clearance hole for the second chuck structure to pass through. The operating side of the protective enclosure has a maintenance door that can move back and forth.

9. The anti-collision laser tube cutting machine according to claim 8, characterized in that, The protective housing has an exhaust box inside, which has a dust removal hole. The exhaust box is located below the laser cutting assembly and is connected to an exhaust pipe. The bed has an exhaust hole, and the exhaust pipe is located in the exhaust hole.

10. The anti-collision laser tube cutting machine according to claim 8, characterized in that, The bed is composed of multiple hollow square tubes and an outer panel. A wiring cavity is formed between the square tubes and the outer panel. A wire trough is provided on the side wall of the bed away from the operating side. The wire trough is connected to the wiring cavity. An electrical cabinet is provided on the side wall of the protective box away from the operating side. The wire trough is connected to the electrical cabinet.

Images