Pipeline adjusting mechanism and laser cutting device

Abstract

The utility model provides a pipeline adjusting mechanism and a laser cutting device, and the pipeline adjusting mechanism comprises a support; the movable frame is movably arranged on the support in the first direction; the pulley block comprises a first pulley and a second pulley, the first pulley is rotatably arranged on the movable frame, and the second pulley is rotatably arranged on the support; the force application piece is connected with the movable frame, and the force application piece applies force which is in the first direction and deviates from the second pulley to the movable frame; wherein the pipeline is sequentially wound around the first pulley and the second pulley, and then is outwards led out from the second pulley to be connected with a load. According to the pipeline adjusting mechanism, coiling of the pipeline (such as an optical fiber tube) can be conveniently controlled, and the equipment cost is reduced.

Description

Technical Field

[0001] This application belongs to the technical field of laser processing, and more specifically, relates to an adjustment mechanism for pipelines and a laser cutting device. Background Art

[0002] When a laser pipe cutting machine cuts a pipe, the pipe can remain stationary while the cutting head rotates around the pipe for cutting. When the cutting head rotates, it is necessary to control the coiling of the optical fiber to avoid breaking or pulling of the optical fiber. In related technologies, most solutions involve adding a servo coiling mechanism to wind and unwind the optical fiber, but the use of a servo device significantly increases the equipment cost. Summary of the Utility Model

[0003] An embodiment of this application provides an adjustment mechanism for pipelines, which can conveniently control the coiling of pipelines (such as optical fiber tubes) and reduce the equipment cost.

[0004] The technical solution adopted in the embodiment of this application is: to provide an adjustment mechanism for pipelines, including:

[0005] A bracket;

[0006] A movable frame movably arranged on the bracket along a first direction;

[0007] A pulley group including a first pulley and a second pulley, the first pulley rotatably arranged on the movable frame, and the second pulley rotatably arranged on the bracket; and

[0008] A force applying member connected to the movable frame, the force applying member applying a force along the first direction and away from the second pulley to the movable frame;

[0009] Wherein, after the pipeline sequentially winds around the first pulley and the second pulley, it is led out from the second pulley to connect to a load.

[0010] Further, the adjustment mechanism for pipelines further includes:

[0011] A third pulley rotatably arranged on the bracket, the axis of the third pulley being higher than the axes of the first pulley and the second pulley;

[0012] A sling, one end connected to the movable frame, and the other end passing around the third pulley from above and then connected to the force applying member, the force applying member being a counterweight, and the first direction being the height direction.

[0013] Further, a groove is provided in a circumferential direction on the surface of the third pulley.

[0014] Further, a connecting column is provided on the movable frame, the axis of the connecting column being parallel to and lower than the axis of the third pulley, and one end of the sling passes around the third pulley from above and then is connected to the connecting column.

[0015] Further, the sling between the third pulley and the connecting column is vertical.

[0016] Further, the force applying member is an elastic member, one end of which is connected to the bracket and the other end is connected to the movable frame, and the elastic member is in a stretched state.

[0017] Further, a plurality of second pulleys are provided and are spaced at one end of the bracket;

[0018] A plurality of the first pulleys are provided and are spaced on the movable frame;

[0019] The pipeline passes around each of the first pulleys and each of the second pulleys in the order of the first pulleys and the second pulleys being spaced in turn.

[0020] Further, a profiling groove for the pipeline to be clamped into is provided on the circumferential surface of the second pulley and / or the first pulley.

[0021] Further, a guide rail assembly is further included, and the guide rail assembly includes:

[0022] A guide rail, which is arranged on the bracket along the first direction;

[0023] A slider, which is slidably arranged on the guide rail in a matching manner, and the movable frame is arranged on the slider.

[0024] The embodiment of the present application further provides a laser cutting device, which includes a cutting assembly, a winding disc and an adjusting mechanism for the pipeline as described in any one of the above;

[0025] The cutting assembly includes a cutting head and an optical fiber tube, the cutting head can rotate around a first axis, one end of the optical fiber tube is connected to the cutting head, and the optical fiber tube is the pipeline;

[0026] The winding disc can rotate around the first axis, and the other end of the optical fiber tube is wound around the winding disc, the second pulley, the first pulley and then connected to a laser generator.

[0027] The beneficial effects of the pipeline adjusting mechanism provided by the embodiments of the present application are as follows: In the pipeline adjusting mechanism of the embodiments of the present application, a pulley group is provided. The first pulley of the pulley group is arranged on the movable frame, and the second pulley is arranged on the bracket. The force applying member applies a force to the movable frame to pull the movable frame in a direction away from the second pulley. The pipeline is wound around the first pulley and the second pulley in sequence, and then is led out from the second pulley to connect to a load (such as a laser cutting head). When the led-out pipeline is pulled out longer, the tension force can overcome the force of the force applying member and pull the movable frame closer to the second pulley, shortening the distance between the first pulley and the second pulley, thereby avoiding breaking the pipeline due to excessive tension force. When the led-out pipeline is loosened and releases more length, the force of the force applying member can pull the movable frame away from the second pulley, increasing the distance between the first pulley and the second pulley, accommodating the released length of the pipeline, ensuring that the pipeline between the first pulley and the second pulley is in a tension state, and avoiding pipeline slack. In the embodiments of the present application, the pipe finally leads out from the second pulley. When adjusting the position of the first pulley to adapt to the tension or release of the pipeline, the direction and position of the led-out pipeline will not change, so that the pipeline will not touch other surrounding structures during adjustment, causing failures. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0029] Figure 1 is a schematic three-dimensional structure diagram of the pipeline adjusting mechanism provided by the embodiments of the present application;

[0030] Figure 2 is a schematic three-dimensional structure diagram of another perspective of the pipeline adjusting mechanism provided by the embodiments of the present application;

[0031] Figure 3 is a side view of the pipeline adjusting mechanism provided by the embodiments of the present application;

[0032] Figure 4 is a schematic diagram of the laser cutting device provided by the embodiments of the present application.

[0033] Among them, the reference numerals in the drawings are as follows:

[0034] 10, bracket;

[0035] 20, movable frame; 21, connecting column;

[0036] 30, pulley group; 31, first pulley; 32, second pulley; 33, profiling groove;

[0037] 40. Force application member;

[0038] 50. Third pulley;

[0039] 60. Suspension cable;

[0040] 70. Guide rail assembly; 71. Guide rail; 72. Slide block;

[0041] 100. Laser cutting device; 110. Cutting assembly; 111. Cutting head; 112. Pipeline; 120. Winding disc; 130. Pipe.

[0042] X. First axis; Z. First direction. Detailed implementation manners

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the present application.

[0046] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, "a plurality of" means two or more unless otherwise specifically defined.

[0047] Please refer to Figure 1 , and now the adjustment mechanism of the pipeline provided by the embodiment of the present application will be described. The adjustment mechanism of the pipeline provided by the embodiment of the present application includes a bracket 10, a movable frame 20, a pulley group 30 and a force application member 40.

[0048] The adjustment mechanism of the pipeline is a mechanism for arranging the pipeline 112 connected to the device during the movement of other devices. By taking in and releasing the pipeline 112 to cooperate with the movement of the device, it avoids breaking or pulling off the pipeline 112 during the movement of the device. Specifically, the pipeline 112 can be an optical fiber, a cable, a flexible pipeline, etc.

[0049] Refer to Figure 1 , the bracket 10 is the fixed part of the adjustment mechanism, usually made of a strong material such as steel or aluminum alloy to ensure its stability and durability. The shape and size of the bracket 10 are designed according to specific application requirements. In some embodiments, the bracket 10 is a column, and the lower end of the column is fixed on the floor.

[0050] Refer to Figure 2 and Figure 3 , the movable frame 20 is movably arranged on the bracket 10 along the first direction Z. The first direction Z can be a vertical or horizontal direction, and the movable frame 20 is movable on the bracket 10. The movable frame 20 can be connected to the bracket 10 through a guide rail 71 or a bearing system to ensure its smooth movement.

[0051] Refer to Figure 1 and Figure 2 , the pulley set 30 includes a first pulley 31 and a second pulley 32. The first pulley 31 is rotatably arranged on the movable frame 20, and the second pulley 32 is rotatably arranged on the bracket 10. The first pulley 31 is installed on the movable frame 20 and can rotate freely, and its position can change with the movement of the movable frame 20. The second pulley 32 is fixed on the bracket 10 as the fixed outlet end point of the pipeline 112 to ensure that the direction and position of the pipeline 112 remain unchanged when it is led out.

[0052] Refer to Figure 2 , the force-applying member 40 is connected to the movable frame 20, and the force-applying member 40 applies a force along the first direction Z and away from the second pulley 32 to the movable frame 20. The force-applying member 40 is connected to the movable frame 20 and can be a spring, a hydraulic cylinder or other types of force-applying mechanisms. The function of the force-applying member 40 is to apply a force in a direction away from the second pulley 32 to the movable frame 20 to control the distance between the first pulley 31 and the second pulley.

[0053] Among them, after the pipeline 112 sequentially winds around the first pulley 31 and the second pulley 32, it is led out from the second pulley 32 to connect to the load. The pipeline 112 starts to wind in from the first pulley 31, passes through the second pulley 32, and then is led out from the second pulley 32 to connect to the load. The load can be a laser cutting head. This design ensures that the direction and position of the pipeline 112 remain unchanged during the adjustment process.

[0054] Based on the above structure, when the side where the pipeline 112 is led out relaxes the pipeline 112, the pipeline adjusting mechanism needs to tighten the pipeline 112. The force-applying member 40 will pull the movable frame 20 away from the second pulley, increasing the distance between the first pulley 31 and the second pulley to accommodate the increased length of the pipeline 112 due to relaxation. When more pipeline 112 needs to be pulled out from the pipeline adjusting mechanism on the side where the pipeline 112 is led out, the pipeline adjusting mechanism needs to release the pipeline 112. The pulling force of the pipeline 112 can overcome the force applied by the force-applying member 40, thereby pulling the movable frame 20 towards the second pulley, reducing the distance between the first pulley 31 and the second pulley, and releasing more pipeline 112.

[0055] Referring to Figure 2 and Figure 3 , the pipeline adjusting mechanism further includes a third pulley 50 and a sling 60.

[0056] The third pulley 50 is rotatably provided on the bracket 10. The axis of the third pulley 50 is higher than the axes of the first pulley 31 and the second pulley 32. This design enables the third pulley 50 to act as a fulcrum in the path of the sling 60, helping to change the direction of the force.

[0057] Referring to Figure 2 and Figure 3 , one end of the sling 60 is connected to the movable frame 20, and the other end bypasses the third pulley 50 from above and is connected to the force-applying member 40. The force-applying member 40 is a counterweight, and the first direction Z is the height direction. The sling 60 is a rope or a chain, having sufficient strength and flexibility to adapt to different load requirements. One end of the sling 60 is fixedly connected to the movable frame 20, and the other end bypasses the third pulley 50 and is connected to the force-applying member 40 (counterweight).

[0058] The force-applying member 40 adopts the form of a counterweight in this design, which can be a heavy object or an object with a certain mass. The gravity of the counterweight is converted into an upward pulling force on the movable frame 20 through the action of the sling 60 and the third pulley 50.

[0059] When the pipeline 112 is relaxed in the leading-out direction, the distance between the first pulley 31 and the second pulley 32 needs to be pulled apart to tighten the pipeline 112 therebetween. At this time, the gravity of the counterweight, through the cooperation of the sling 60 and the third pulley 50, pulls the movable frame 20 upward, thereby increasing the distance between the first pulley 31 and the second pulley 32 to accommodate more pipeline 112 released.

[0060] When the pipeline 112 is tightened in the leading-out direction, the distance between the first pulley 31 and the second pulley 32 needs to be reduced to shorten the pipeline 112 therebetween. The pulling force in the leading-out direction of the pipeline 112 is greater than the gravity of the counterweight, thereby pulling the movable frame 20 downward and shortening the distance between the first pulley 31 and the second pulley 32 to release more pipeline 112.

[0061] Referring to Figure 2 , a groove is provided on the circumferential surface of the third pulley 50 to prevent the sling 60 from disengaging from the third pulley 50 when the third pulley 50 rotates.

[0062] Referring to Figure 2 , the movable frame is provided with a connecting column 21. The axis of the connecting column 21 is parallel to and lower than the axis of the third pulley 50. One end of the sling 60 bypasses the third pulley 50 from above and then is connected to the connecting column 21. The connecting column 21 is a structural part of the movable frame, and its axis is parallel to and lower than the axis of the third pulley 50. This design ensures the position and function of the connecting column 21 in the sling 60 system. One end of the sling 60 bypasses the third pulley 50 from above and then is connected to the connecting column 21. This connection method allows the tension of the sling 60 to directly act on the connecting column 21, thereby affecting the position of the movable frame 20 and the tension of the pipeline 112. When the counterweight applies tension to the sling 60, the force is transmitted through the sling 60 to the connecting column 21, and then through the connecting column 21 to the movable frame 20.

[0063] Referring to Figure 2 , the sling 60 between the third pulley 50 and the connecting column 21 is vertical. This configuration of the sling 60 makes it vertical between the third pulley 50 and the connecting column 21, which helps to directly transmit the tension of the counterweight to the connecting column 21. This vertical tension allows the movable frame 20 to move up or down through the connecting column 21, thereby adjusting the distance between the first pulley 31 and the second pulley. The vertical configuration of the sling 60 ensures the shortest force transmission path, reduces the loss of force during transmission, and improves the efficiency of the adjustment mechanism.

[0064] Furthermore, the force applying member 40 is an elastic member (not shown in the figure), one end is connected to the bracket 10, and the other end is connected to the movable frame. The elastic member is in a stretched state. The elastic member can be a spring, a rubber band or other materials with elastic properties, and can provide predictable and controllable force. One end of the elastic member is connected to the bracket 10, and the other end is connected to the movable frame 20. This connection method ensures that the elastic member can directly apply force to the movable frame 20. The elastic member is in a stretched state when installed, which means it has stored a certain amount of potential energy. When the movable frame 20 needs to move, the stretched state of the elastic member will release energy and generate tension. The tension of the elastic member directly acts on the movable frame 20, pushing the movable frame 20 to move along the set direction. This force transmission method is simple and direct, reducing the loss of force during transmission.

[0065] When more pipeline 112 needs to be released in the direction where the pipeline 112 is led out, the pulling force on the pipeline 112 decreases. The pulling force of the pipeline 112 on the movable frame is less than the pulling force of the elastic member. The pulling force of the elastic member will pull the movable frame 20 to move away from the second pulley 32, increasing the distance between the first pulley 31 and the second pulley 32, so as to accommodate more pipeline 112 and maintain the tension in the pipeline 112.

[0066] When it is necessary to tighten the pipeline 112 in the direction where the pipeline 112 is led out, the pulling force on the pipeline 112 increases. The pulling force of the pipeline 112 on the movable frame is greater than the pulling force of the elastic member, pulling the movable frame 20 to move closer to the second pulley 32, shortening the distance between the first pulley 31 and the second pulley 32, so as to release more pipeline 112 and maintain the tension in the pipeline 112.

[0067] Refer to Figure 1 , a plurality of second pulleys 32 are provided and are spaced apart at one end of the bracket 10. The second pulley 32 is not single, but multiple and spaced apart at one end of the bracket 10. This design can provide more support points, help to disperse the tension of the pipeline 112, and reduce the load on a single pulley.

[0068] A plurality of first pulleys 31 are provided and are spaced apart on the movable frame 20. Similarly, a plurality of first pulleys 31 are spaced apart on the movable frame 20. Corresponding to the second pulley 32, the increase in the first pulley 31 can provide a more refined adjustment ability to meet the requirements of pipelines 112 with different lengths and tensions.

[0069] Refer to Figure 1 , the pipeline 112 passes around each first pulley 31 and each second pulley 32 in the order of being spaced apart by the first pulley 31 and the second pulley 32 in turn. The pipeline 112 passes around in the order of first pulley 31 - second pulley 32 - first pulley 31 - second pulley 32... in turn and at intervals. This winding method allows the pipeline 112 to maintain a uniform tension distribution when passing through multiple pulleys.

[0070] Refer to Figure 1 , a profiling groove 33 for the pipeline 112 to be snapped into is provided on the circumferential surface of the second pulley 32 and / or the first pulley 31. The profiling groove 33 is a groove designed along the circumferential surface of the pulley, and its shape matches the cross-section of the pipeline 112 and can be semi-circular. When the pipeline 112 is snapped into these profiling grooves 33, it can prevent the pipeline 112 from sliding or disengaging on the pulley, ensuring that the pipeline 112 remains stable during the adjustment process. The design of the profiling groove 33 increases the friction between the pulley and the pipeline 112, reducing the potential safety risks caused by the sliding or disengagement of the pipeline 112. During the adjustment of the pipeline 112, even if the movable frame 20 moves, the pipeline 112 can remain in the profiling groove 33, thus ensuring the accuracy of the adjustment and the stability of the pipeline 112.

[0071] Referring to Figure 3 , it further includes a guide rail assembly 70, and the guide rail assembly 70 includes a guide rail 71 and a slider 72.

[0072] The guide rail 71 is arranged on the bracket 10 along the first direction Z. The guide rail 71 is one or more straight or curved tracks arranged along the first direction Z (usually the vertical or horizontal direction), and is used to guide the movement of the slider 72.

[0073] The slider 72 is slidably arranged on the guide rail 71 in a matching manner, and the movable frame 20 is arranged on the slider 72. The slider 72 is a component that matches the guide rail 71 and can slide smoothly on the guide rail 71. The design of the slider 72 ensures good contact with the guide rail 71 and low friction. The movable frame 20 is fixed or installed on the slider 72, so that the movable frame 20 can perform precise linear movement along the direction of the guide rail 71.

[0074] The guide rail assembly 70 ensures that the sliding direction of the movable frame 20 is strictly limited to the first direction Z, preventing unwanted movements such as lateral or rotational movements. The combined use of the guide rail 71 and the slider 72 reduces friction and wear during the sliding process, making the movement of the movable frame 20 smoother and more precise. The guide rail assembly 70 provides stable support and reduces structural vibration or offset caused by the movement of the movable frame 20.

[0075] Referring to Figure 4 , the embodiment of the present application further provides a laser cutting device 100, which includes a cutting assembly 110, a wire winding disc 120, and an adjusting mechanism for the pipeline as described in any one of the above embodiments. The cutting assembly 110 includes a cutting head 111 and an optical fiber tube. The cutting head 111 can rotate around the first axis X. One end of the optical fiber tube is connected to the cutting head 111, and the optical fiber tube is the pipeline 112. The wire winding disc 120 can rotate around the first axis X. The other end of the optical fiber tube is wound around the wire winding disc 120, passes through the second pulley and the first pulley 31, and then is connected to the laser generator.

[0076] The working process of the laser cutting device 100 is precise and coherent. From the preparation of the pipe 130 to the completion of cutting, the whole process is as follows:

[0077] In the initial stage, the pipe 130 is accurately placed in the working area of the laser cutting device 100 (the pipe 130 is supported by a support frame), ensuring that its axis is aligned with the first axis X of the device, providing a necessary geometric reference for circumferential cutting. At this time, the laser generator is ready. Through the arrangement of the pipeline 112 adjusting mechanism, the optical fiber tube is wound on the wire winding disc 120 and connected to the cutting head 111, ensuring the stability and appropriate tension of the optical fiber.

[0078] With the startup of the laser generator, the laser energy is transmitted through the fiber optic tube to the cutting head 111. Then, the cutting head 111 starts to rotate around the first axis X to perform precise circumferential cutting on the pipe 130. During the cutting process, the cutting head 111 moves circumferentially along the pipe 130. Meanwhile, the winding disc 120 rotates synchronously and dynamically winds or releases the fiber optic tube according to the rotation direction of the cutting head 111. For example, when the cutting head 111 rotates counterclockwise, the winding disc 120 releases the fiber optic cable, and the force-applying member 40 (such as an elastic member or a counterweight) in the pipeline 112 adjusting mechanism correspondingly adjusts the position of the movable frame 20 to maintain the tension of the fiber optic cable. On the contrary, when the cutting head 111 rotates clockwise after completing one circle of cutting and resets, the winding disc 120 winds the excess fiber optic cable, and the movable frame 20 correspondingly adjusts its position under the action of the force-applying member 40 to adapt to the reduction of the fiber optic cable length. During the entire cutting process, the pipeline 112 adjusting mechanism adjusts the position of the movable frame 20 in real time according to the winding or releasing of the fiber optic cable by the winding disc to ensure that the fiber optic cable will not affect the cutting effect or cause equipment failure due to excessive or insufficient tension.

[0079] When the cutting task is completed, the cutting head 111 stops laser emission and returns to the initial position or the safe position, and the winding disc 120 stops rotating. Subsequently, the cut pipe 130 is taken out for subsequent inspection or processing, while the laser cutting device 100 and the pipeline 112 adjusting mechanism are reset to prepare for the next cutting task. This process not only ensures high-precision and high-efficiency cutting but also guarantees the safety of operation and the stability of the equipment.

[0080] The laser cutting device 100 according to the embodiment of the present application has the beneficial effects brought by the pipeline adjusting mechanism in any of the above embodiments because it includes the pipeline adjusting mechanism in any of the above embodiments, which will not be elaborated here.

[0081] The above are only the preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pipeline adjustment mechanism, characterized in that: include: Bracket; A movable frame, movably disposed on the bracket along a first direction; A pulley block, comprising a first pulley and a second pulley, wherein the first pulley is rotatably disposed on the movable frame, and the second pulley is rotatably disposed on the bracket; as well as a force applying member connected to the movable frame, wherein the force applying member applies a force to the movable frame along the first direction and away from the second pulley; Wherein, the pipeline passes through the first pulley and the second pulley in sequence, and is led outward from the second pulley to connect to the load.

2. The pipeline adjustment mechanism according to claim 1, characterized in that: The regulating mechanism of the pipeline also includes: A third pulley is rotatably disposed on the bracket, wherein the axis of the third pulley is higher than the axes of the first pulley and the second pulley; A sling has one end connected to the movable frame, and the other end passes around the third pulley from above and is connected to the force-applying member, the force-applying member is a counterweight, and the first direction is a height direction.

3. The pipeline adjustment mechanism according to claim 2, characterized in that: The circumferential surface of the third pulley is provided with a circle of grooves.

4. The pipeline adjustment mechanism according to claim 2, characterized in that: The movable frame is provided with a connecting column, the axis of which is parallel to and lower than the axis of the third pulley. One end of the sling passes around the third pulley from above and is connected to the connecting column.

5. The pipeline adjustment mechanism according to claim 4, characterized in that: The sling between the third pulley and the connecting column is vertical.

6. The pipeline adjustment mechanism according to claim 1, characterized in that: The force-applying member is an elastic member, one end of which is connected to the bracket and the other end of which is connected to the movable frame. The elastic member is in a stretched state.

7. The pipeline adjustment mechanism according to claim 1, characterized in that: The second pulley is provided in plurality and is arranged at intervals at one end of the bracket; The first pulleys are provided in plurality and are arranged at intervals on the movable frame; The pipeline is wound around the first pulleys and the second pulleys in the order in which the first pulleys and the second pulleys are sequentially spaced.

8. The pipeline adjustment mechanism according to claim 1, characterized in that: The circumference of the second pulley and / or the first pulley is provided with a contoured groove for the pipeline to be inserted into.

9. The pipeline adjustment mechanism according to claim 1, characterized in that: Also included is a guide rail assembly, the guide rail assembly comprising: A guide rail, arranged on the bracket along the first direction; The slider can be slidably arranged on the guide rail, and the movable frame is arranged on the slider.

10. A laser cutting device, characterized in that: A method of manufacturing a pipeline comprising a cutting assembly, a winding drum and an adjustment mechanism for a pipeline as claimed in any one of claims 1 to 9; The cutting assembly comprises a cutting head and an optical fiber tube, wherein the cutting head can rotate around a first axis, one end of the optical fiber tube is connected to the cutting head, and the optical fiber tube is the pipeline; The winding drum can rotate around the first axis, and the other end of the optical fiber tube is connected to the laser generator after winding through the winding drum, the second pulley and the first pulley.

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