Automatic fixed-length cutting device for high-frequency welded pipe

Abstract

The invention discloses an automatic fixed-length cutting device for a high-frequency welded pipe. The automatic fixed-length cutting device comprises a fixing structure, a cutting structure and an auxiliary structure. The cutting structure is detachably arranged on the fixing structure, the auxiliary structure is detachably arranged on the cutting structure, and the auxiliary structure corresponds to the fixing structure; the fixing structure is used for clamping and fixing a pipe orifice part and lifting one end of the pipe orifice, the cutting structure can be assembled according to the required cutting length of a pipe, the length is increased, the cutting part is adjusted, and cutting is carried out. The problems of unstable clamping, limited cutting range, quality fluctuation, low transfer efficiency and the like during large-diameter high-frequency welding pipe cutting are systematically solved, high precision, high flexibility and high safety are achieved, and the automation level and the production efficiency of high-frequency welding pipe machining are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting machines, and particularly to an automatic fixed-length cutting device for high-frequency welded pipes. Background Art

[0002] High-frequency welded pipe is a steel pipe production process that uses the skin effect and proximity effect generated by high-frequency current to quickly heat the edge of the pipe blank to the welding temperature, and then applies pressure to achieve welding. Due to different uses, the diameters of welded pipes are different, and welded pipes mostly have a relatively long length. During use, it is necessary to cut the corresponding length according to requirements. Steel pipes with a smaller diameter can be cut by existing simple cutting equipment or hand-held cutting machines. However, some pipes with a larger diameter are difficult to cut circumferentially due to their length and weight. In particular, it is necessary to measure the corresponding length, and it is quite labor-consuming to transport them to the equipment, and they are also prone to falling and injuring people. Summary of the Invention

[0003] The purpose of the present invention is to solve the technical problem of inconvenient cutting of existing large-diameter high-frequency welded pipes as mentioned in the above background art, and to provide an automatic fixed-length cutting device for high-frequency welded pipes. To achieve the purpose of the present invention, the following technical solutions are adopted.

[0004] To achieve the above solution, the present invention provides the following technical solution: An automatic fixed-length cutting device for high-frequency welded pipes, comprising a fixing structure, a cutting structure, and an auxiliary structure; the cutting structure is detachably arranged on the fixing structure, the auxiliary structure is detachably arranged on the cutting structure, and the auxiliary structure corresponds to the fixing structure; the fixing structure is used for clamping and fixing the pipe orifice part and lifting one end of the pipe orifice, the cutting structure can be assembled according to the required cutting length of the pipe to increase the length and adjust the cutting part and perform cutting, and the auxiliary structure is used for auxiliary support of the end of the pipe to prevent cutting on the ground and breakage caused by gravity during the cutting process.

[0005] Preferably, the fixing structure includes a slideway, a handrail, a pair of first support arms, a pair of first hydraulic cylinders, a pair of first clamping arms, a second clamping arm, three second hydraulic cylinders, and three clamping rods; the slideway is a semi-circular structure, and arc-shaped adjustment grooves are provided in the middle of both ends of the slideway. The handrail is concave, and first turning openings are provided in the middle of both ends of the handrail. Both ends of the handrail are fixedly arranged on the right side walls of both ends of the slideway. One ends of the pair of first support arms are respectively movably arranged on the lower wall of the right end of the handrail, and the other ends of the first support arms are located below the first turning openings. One ends of the pair of first hydraulic cylinders are respectively movably inserted into the first turning openings at both ends of the handrail, and the other ends of the first hydraulic cylinders are respectively inclined to the right and movably connected to the first support arms. The pair of first clamping arms are both L-shaped. One ends of the pair of first clamping arms are respectively movably arranged at the first turning opening parts at both ends of the slideway, and the first clamping arms and the slideway are fixed by a first bolt and a first nut. The other ends of the first clamping arms are located below the handrail. The second clamping arm is L-shaped, and a lifting groove is provided in the middle of one end of the second clamping arm. One end of the second clamping arm is movably arranged on the middle part of the left side wall of the slideway by a first bolt and a first nut, and the second clamping arm can be adjusted in height. The three second hydraulic cylinders are respectively fixedly arranged on one end of the first clamping arm. One ends of the three clamping rods are respectively fixedly arranged on the telescopic ends of the second hydraulic cylinders, and the clamping rods correspond to the other ends of the first clamping arm and the other end of the second clamping arm.

[0006] Preferably, the slideway is used for the first clamping arm to adjust the clamping position according to the pipe grooves with different diameters. The second clamping arm moves up and down on the slideway to adjust and achieve three-point clamping according to the diameter of the pipe. The handrail is used to apply force to move the handling equipment and carry the first support arm. The first hydraulic cylinder drives the first support arm to turn and raise one side of the handrail.

[0007] Preferably, the cutting structure includes a pair of first connectors, several second connectors, several fastening bolts, a pair of first electric slide rails, a pair of sockets, a frame, a handle, a second electric slide rail, an arm, a motor, and a cutting wheel; the pair of first connectors are symmetrically arranged at both ends of the armrest respectively, and the first connector is a rectangular frame structure; several second connectors are all convex structures, and the diameter of one end of the second connector is larger than that of the other end; several second connectors are respectively detachably inserted into the first connector, and the second connectors are detachably inserted opposite to each other; several fastening bolts are respectively detachably screwed into the upper wall of the first connector and the upper wall of one end of the second connector, and several fastening bolts can be used for fixing the first connector and the second connector and fixing the second connector and the second connector; one end of the pair of first electric slide rails is respectively detachably inserted into the first connector or the second connector; the pair of sockets are respectively fixedly arranged on the first electric slide rails and the sockets can move left and right; the pair of sockets are both L-shaped, and the other end of the socket is a tubular structure; the frame is a portal frame, and both ends of the frame are respectively detachably inserted into the other end of the socket, and the frame and the socket are fixed by a second bolt; the handle is fixedly arranged on the frame; the second electric slide rail is vertically arranged in the middle of the left side wall of the frame; one end of the arm is fixedly arranged on the second electric slide rail and the arm can move up and down; the motor is fixedly arranged on the other end of the arm, and the driving end of the motor movably penetrates through the arm; the cutting wheel is detachably arranged on the driving end of the motor.

[0008] Preferably, the diameter of the cutting wheel is smaller than the distance between the first electric slide rails.

[0009] Preferably, the docking of the first connector and the second connector can infinitely increase the cutting position range of the cutting wheel. The first electric slide rail can also be connected through the first connector and the second connector. The cutting wheel can be automatically adjusted in a certain range by the first electric slide rail, and the cutting wheel is driven to rotate by the motor and driven to descend by the second electric slide rail for cutting.

[0010] Preferably, the auxiliary structure includes a pair of auxiliary components, a pair of supporting components, and a supporting rod; the pair of auxiliary components are respectively detachably sleeved on the other end of the first electric slide rail and are symmetrical to each other; the pair of supporting components are respectively arranged on the auxiliary components and are symmetrical to each other; both ends of the supporting rod are detachably arranged on the supporting components; the auxiliary components are used for docking with the first driving slide rail and can support and lift; the supporting components are used for adjusting the bearing position and height of the supporting rod.

[0011] Preferably, the auxiliary assembly includes an auxiliary arm, a pair of third bolts, a third hydraulic cylinder, and a second support arm; one end of the auxiliary arm is detachably sleeved on the other end of the first electric slide rail, and a second flipping opening is formed in the middle of the other end of the auxiliary arm. The pair of third bolts are respectively rotatably connected to the front and rear side walls of one end of the auxiliary arm and are tightened against the side wall of the first electric slide rail. One end of the third hydraulic cylinder is movably embedded in the right end of the second flipping opening, and the telescopic end of the third hydraulic cylinder inclines to the left. One end of the second support arm is movably connected to the second flipping opening at the other end of the auxiliary arm, and the other end of the second support arm inclines to the right and faces the first support arm. The second support arm is movably connected to the telescopic end of the third hydraulic cylinder.

[0012] Preferably, the supporting assembly includes an adjusting track, an adjusting seat, a fourth bolt, and a supporting arm; the adjusting track is fixedly arranged on the auxiliary arm, and a transposition groove is formed in the middle of the adjusting track. The adjusting seat is movably inserted into the transposition groove of the adjusting track and moves left and right. The fourth bolt is rotatably connected to the middle of the adjusting seat and is tightened in the adjusting track. One end of the supporting arm is fixedly arranged on the adjusting seat. The supporting arm is L-shaped, and a plurality of inclined clamping grooves are equidistantly formed in the other end of the supporting arm. The other end of the supporting arm is located below the adjusting track.

[0013] Preferably, both ends of the supporting rod are respectively clamped in the clamping grooves of the supporting arm.

[0014] Preferably, the first clamping arm and the second clamping arm can clamp at three positions on the pipe orifice part by means of the clamping rod.

[0015] A high-frequency welded pipe automatic fixed-length cutting device proposed by the present invention has the following beneficial effects: 1. Through the three-point clamping structure formed by a pair of first clamping arms and second clamping arms, in cooperation with the clamping rod driven by the second hydraulic cylinder, the clamping position can be adjusted according to the diameter of the pipe (the first clamping arm moves through the slideway adjusting groove, and the second clamping arm moves up and down through the lifting groove), realizing the stable fixation of high-frequency welded pipes with different diameters and solving the problem that traditional equipment cannot firmly clamp large-diameter pipes.

[0016] 2. The first support arm and the second support arm are driven by the first hydraulic cylinder and the third hydraulic cylinder to flip, forming a four-point support system that is symmetrical front and back, which can lift the pipe orifice and support the pipe obliquely, avoiding shaking or breaking caused by gravity during the cutting process, and ensuring that the pipe remains in a self-stable state during cutting, especially suitable for the processing of long-distance and heavy pipes.

[0017] 3. The first connection seat and the second connection seat are fixed by convex plug-in cooperation with fastening bolts, and can be infinitely spliced according to the cutting length requirement, realizing the free extension of the cutting structure. Without replacing the whole equipment, only by adding a second connection seat can the cutting range be expanded, significantly improving the adaptability of the equipment to pipes with different lengths and reducing the equipment cost for multi-specification processing.

[0018] 4. The supporting component in the auxiliary structure can move on the adjusting track through the adjusting seat, and cooperate with the support arm clamping groove to fix the support rod, forming a horizontal support for the end of the pipe. During cutting, the support rod and the clamping end of the fixed structure form stable supports at both ends, avoiding the problems of cut deformation or burrs caused by gravity in traditional suspended cutting, improving the flatness of the cut surface, and significantly reducing the surface roughness.

[0019] 5. The equipment can be directly installed at the pipe placement position. By clamping the pipe orifice through the fixed structure and supporting the end through the auxiliary structure, it is not necessary to hoist the pipe to the fixed cutting table, saving 3-4 hoisting and transfer processes in the traditional process, reducing labor loss and safety risks, and is especially suitable for in-situ processing at the construction site or for large pipes.

[0020] In summary, through innovative designs such as adaptive clamping, modular expansion, and auxiliary support, the present invention systematically solves the problems of unstable clamping, limited cutting range, quality fluctuations, and low transfer efficiency in the cutting of large-diameter high-frequency welded pipes. It combines high precision, high flexibility, and high safety, significantly improving the automation level and production efficiency of high-frequency welded pipe processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is Figure 1 a schematic diagram of the fixed structure in Figure 3 is Figure 1 a schematic diagram of the auxiliary structure in Figure 4 is a schematic diagram of the split structure of the fixed structure of the present invention; Figure 5 is a schematic diagram of the split structure of the cutting structure of the present invention; Figure 6 is a schematic diagram of the split structure of the auxiliary structure of the present invention; Figure 7 is a schematic diagram of the structure of the cutting structure of the present invention; Figure 8 is Figure 5 a schematic diagram of the structure at position A in Figure 9 is Figure 6 a schematic diagram of the structure at position B in

[0022] In the figure: 1. Fixed structure; 10. Slideway; 11. Handrail; 12. First support arm; 13. First hydraulic cylinder; 14. First clamping arm; 15. Second clamping arm; 16. Second hydraulic cylinder; 17. Clamping rod; 2. Cutting structure; 20. First socket; 21. Second socket; 22. Fastening bolt; 23. First electric slide rail; 24. Socket; 25. Frame; 26. Handle; 27. Second electric slide rail; 28. Machine arm; 29. Motor; 30. Cutting wheel; 4. Auxiliary structure; 41. Auxiliary component; 411. Auxiliary arm; 412. Third bolt; 413. Third hydraulic cylinder; 414. Second support arm; 42. Support component; 422. Adjusting track; 423. Adjusting seat; 424. Fourth bolt; 425. Support arm; 43. Support rod; 51. First flipping port; 52. First bolt; 53. First nut; 54. Lifting groove; 61. Second bolt; 62. Second flipping port; 63. Transposition groove; 64. Card slot. Detailed implementation manners

[0023] The following makes a detailed description of the specific implementation manners of the present invention in conjunction with the accompanying drawings.

[0024] As Figures 1-9 shown, the present invention provides a technical solution: a high-frequency welded pipe automatic fixed-length cutting device, including a fixed structure 1; a cutting structure 2 is detachably installed on the fixed structure 1, an auxiliary structure 4 is detachably installed on the cutting structure 2, and the auxiliary structure 4 corresponds to the fixed structure 1; the fixed structure 1 is used for clamping and fixing the pipe orifice part and lifting one end of the pipe orifice, the cutting structure 2 can be assembled according to the required cutting length of the pipe to increase the length, adjust the cutting part and perform cutting, and the auxiliary structure 4 is used for auxiliary support of the end of the pipe to prevent cutting the ground and breakage caused by gravity during the cutting process.

[0025] As a further solution of the present invention, the fixing structure 1 includes a slideway 10, an armrest 11, a pair of first support arms 12, a pair of first hydraulic cylinders 13, a pair of first clamping arms 14, a second clamping arm 15, three second hydraulic cylinders 16 and three clamping rods 17; the slideway 10 is of a semi-circular structure, and arc-shaped adjustment grooves 50 are provided in the middle of both ends of the slideway 10, the armrest 11 is concave, and first turning openings 51 are provided in the middle of both ends of the armrest 11, both ends of the armrest 11 are fixedly arranged on the right side walls of both ends of the slideway 10, one ends of the pair of first support arms 12 are respectively movably arranged on the lower wall of the right end of the armrest 11, and the other ends of the first support arms 12 are located below the first turning openings 51, one ends of the pair of first hydraulic cylinders 13 are respectively movably embedded in the first turning openings 51 at both ends of the armrest 11, and the other ends of the first hydraulic cylinders 13 are respectively inclined to the right and movably connected to the first support arms 12, both of the pair of first clamping arms 14 are L-shaped, one ends of the pair of first clamping arms 14 are respectively movably arranged at the positions of the first turning openings 51 at both ends of the slideway 10, and the first clamping arms 14 and the slideway 10 are fixed by a first bolt 52 and a first nut 53, the other ends of the first clamping arms 14 are located below the armrest 11, the second clamping arm 15 is L-shaped, and a lifting groove 54 is provided in the middle of one end of the second clamping arm 15, one end of the second clamping arm 15 is movably arranged on the middle part of the left side wall of the slideway 10 through a first bolt 52 and a first nut 53, and the height of the second clamping arm 15 can be adjusted by lifting, the three second hydraulic cylinders 16 are respectively fixedly arranged on one end of the first clamping arm 14, one ends of the three clamping rods 17 are respectively fixedly arranged on the telescopic ends of the second hydraulic cylinders 16, and the clamping rods 17 correspond to the other ends of the first clamping arms 14 and the second clamping arm 15, through the telescopic movement of the second hydraulic cylinder 16, the clamping rods 17 can penetrate into the inner wall of the pipe or press against the outer wall, and form a three-point clamping force with the first clamping arms 14 and the second clamping arm 15 to realize the stable fixation of the pipe orifice.

[0026] Clamping position adaptation: According to the diameter of the pipe, loosen the first bolt 52, slide the first clamping arm 14 along the adjustment groove 50 of the slideway 10 to adjust its horizontal distance; at the same time, adjust the vertical height of the second clamping arm 15 through the lifting groove 54, so that the three clamping points (the ends of the first clamping arms 14 on both sides, the end of the second clamping arm 15) and the clamping rods 17 form a triangular positioning that fits the outer wall of the pipe.

[0027] After tightening the first bolt 52 to fix the position, start the second hydraulic cylinder 16 to make the clamping rod 17 press against the inner wall (or outer wall) of the pipe to complete the stable clamping of the pipe orifice.

[0028] Pipe Lifting: When it is necessary to lift one end of the pipe opening, control the first hydraulic cylinder 13 to extend, push the first arm 12 to turn upward around the hinge point, drive the right side of the slideway 10 to lift through the handrail 11, and make the pipe form a certain inclination angle, which is convenient for the auxiliary structure 4 to support and cut the end.

[0029] As a further solution of the present invention, the cutting structure 2 includes a pair of first sockets 20, several second sockets 21, several fastening bolts 22, a pair of first electric slide rails 23, a pair of sockets 24, a frame 25, a handle 26, a second electric slide rail 27, an arm 28, a motor 29 and a cutting wheel 30; the pair of first sockets 20 are respectively symmetrically arranged at both ends of the handrail 11, and the first socket 20 is a rectangular frame structure; several second sockets 21 are all convex structures, and the diameter of one end of the second socket 21 is larger than that of the other end; several second sockets 21 are respectively detachably inserted into the first socket 20, and the second sockets 21 are detachably inserted opposite to each other; several fastening bolts 22 are respectively detachably screwed into the upper wall of the first socket 20 and the upper wall of one end of the second socket 21, and the several fastening bolts 22 can be used for fixing the first socket 20 and the second socket 21 and fixing the second socket 21 and the second socket 21; one end of the pair of first electric slide rails 23 is respectively detachably inserted into the first socket 20 or the second socket 21; the pair of sockets 24 are respectively fixedly arranged on the first electric slide rails 23 and the sockets 24 can move left and right; the pair of sockets 24 are both L-shaped, and the other end of the socket 24 is a tubular structure; the frame 25 is a portal frame, and both ends of the frame 25 are respectively detachably inserted into the other end of the socket 24, and the frame 25 and the socket 24 are fixed by a second bolt 61; the handle 26 is fixedly arranged on the frame 25; the second electric slide rail 27 is vertically arranged in the middle of the left side wall of the frame 25; one end of the arm 28 is fixedly arranged on the second electric slide rail 27 and the arm 28 can move up and down; the motor 29 is fixedly arranged at the other end of the arm 28, and the driving end of the motor 29 movably penetrates through the arm 28; the cutting wheel 30 is detachably arranged on the driving end of the motor 29, and the diameter of the cutting wheel 30 is smaller than the distance between the first electric slide rails 23.

[0030] Length Adjustment: According to the length of the pipe to be cut, select an appropriate number of second sockets 21 to be spliced with the first socket 20 and fix them with the fastening bolts 22.

[0031] Position Adjustment: Adjust the positions of the socket 24 and the frame 25 through the first electric slide rail 23 to align the cutting wheel 30 with the cutting position of the pipe; at the same time, use the second electric slide rail 27 to adjust the height of the arm 28 and the cutting wheel 30 to match the cutting height of the pipe.

[0032] Cutting operation: Start the motor 29 to drive the cutting wheel 30 to rotate and cut the pipe. During the cutting process, the positions of the first electric slide rail 23 and the second electric slide rail 27 can be further fine-tuned as needed to ensure the cutting accuracy.

[0033] As a further solution of the present invention, the auxiliary structure 4 includes a pair of auxiliary components 41, a pair of supporting components 42, and a supporting rod 43; the pair of auxiliary components 41 are respectively detachably sleeved on the other ends of the first electric slide rail 23 and are symmetrical to each other, the pair of supporting components 42 are respectively arranged on the auxiliary components 41 and are symmetrical to each other, and both ends of the supporting rod are detachably arranged on the supporting components 42.

[0034] As a further solution of the present invention, the auxiliary component 41 includes an auxiliary arm 411, a pair of third bolts 412, a third hydraulic cylinder 413, and a second supporting arm 414; one end of the auxiliary arm 411 is detachably sleeved on the other end of the first electric slide rail 23, and a second flipping opening 62 is provided in the middle of the other end of the auxiliary arm 411. The pair of third bolts 412 are respectively rotatably connected to the front and rear side walls of one end of the auxiliary arm 411 and are tightened against the side wall of the first electric slide rail 23. One end of the third hydraulic cylinder 413 is movably embedded in the right end of the second flipping opening 62, and the telescopic end of the third hydraulic cylinder 413 inclines to the left. One end of the second supporting arm 414 is movably connected to the second flipping opening 62 at the other end of the auxiliary arm 411, and the other end of the second supporting arm 414 inclines to the right and faces the first supporting arm 12. The second supporting arm 414 is movably connected to the telescopic end of the third hydraulic cylinder 413.

[0035] Installation of the auxiliary component 41: Sleeve the auxiliary arm 411 on the other end of the first electric slide rail 23 and fix it in place by tightening the third bolts 412.

[0036] Adjust the support position: According to the length of the pipe and the cutting position, adjust the overall position of the auxiliary component 41 through the first electric slide rail 23 so that the second supporting arm 414 can accurately support the end of the pipe.

[0037] Support the end of the pipe: Start the third hydraulic cylinder 413 to make it extend, drive the second supporting arm 414 to flip upward until the second supporting arm 414 contacts the end of the pipe and provides stable support. During the cutting process, the second supporting arm 414 and the first supporting arm 12 in the fixed structure act together to ensure the stability of the pipe, reduce the shaking and vibration during cutting, and improve the cutting quality.

[0038] Reset operation: After cutting is completed, start the third hydraulic cylinder 413 to contract it, drive the second arm 414 to flip downward, and restore it to the initial position. Then, the auxiliary component 41 can be disassembled or its position adjusted as needed to prepare for the next cutting operation.

[0039] As a further solution of the present invention, the supporting component 42 includes an adjusting track 421, an adjusting seat 422, a fourth bolt 423, and a supporting arm 424; the adjusting track 421 is fixedly arranged on the auxiliary arm 411, and a transposition groove 63 is formed in the middle of the adjusting track 421. The adjusting seat 422 is movably inserted into the transposition groove 63 of the adjusting track 421 and moves left and right. The fourth bolt 423 is movably screwed into the middle of the adjusting seat 422 and abuts against the inside of the adjusting track 421. One end of the supporting arm 424 is fixedly arranged on the adjusting seat 422. The supporting arm 424 is L-shaped, and a plurality of inclined clamping grooves 64 are equidistantly arranged at the other end of the supporting arm 424. The other end of the supporting arm 424 is located below the adjusting track 421.

[0040] Position adjustment: According to the position and length of the pipe, loosen the fourth bolt 423 to make the adjusting seat 422 move left and right in the transposition groove 63 of the adjusting track 421, and adjust the supporting arm 424 to a suitable supporting position.

[0041] Fix the adjusting seat: When the supporting arm 424 reaches the appropriate position, tighten the fourth bolt 423 to make it abut against the adjusting track 421, fix the adjusting seat 422 at this position, and ensure the stability of the supporting arm 424.

[0042] Support the pipe: Place the supporting rod 43 in the clamping groove 64 of the supporting arm 424, and use the supporting rod 43 to support the pipe. If the supporting position needs to be adjusted again, the above steps can be repeated, loosen the fourth bolt 423 to adjust the position and then tighten and fix it.

[0043] As a further solution of the present invention, both ends of the supporting rod 43 are respectively clamped in the clamping groove 64 of the supporting arm 424 for snap connection design.

[0044] As a further solution of the present invention, the first clamping arm 14 and the second clamping arm 15 can clamp at three points on the pipe orifice part with the clamping rod 17 to stably fix the equipment and the pipe.

[0045] Its detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and the specific work is as follows.

[0046] The device can be moved by applying force through the armrest 11 and the carrying handle 26. The other ends of the first clamping arm 14 and the second clamping arm 15 in the fixing structure 1 are located on the outer wall of the pipe. Insert the clamping rod 17 into the inner part of the pipe groove, and then, by contracting the second hydraulic cylinder 16, the pipe can be clamped by means of the clamping rod 17, the first clamping arm 14 and the second clamping arm 15. According to the different diameters of the pipes, the first clamping arm 14 can be adjusted to move and turn at the adjusting groove 50 of the slideway 10 and the second clamping arm 15 can be adjusted to move up and down by means of the lifting groove 54 through the first bolt 52 and the first nut 53, so as to realize the spacing and position of the three clamping points. After the device is fixed by clamping at three points, the first driving slideway and the auxiliary arm 411 of the device are both parallel to the axial direction of the pipe. At this time, after the device is powered on, control the first hydraulic cylinder 13 to extend to drive the first supporting arm 12 to turn. As the first supporting arm 12 turns, the first hydraulic cylinder 13 will turn and fit the angle in the first turning port 51. Then, the symmetrically arranged first supporting arms 12 contact and turn with the first surface, so as to lift one end of the clamped pipe and raise the side of the armrest 11. After the clamped pipe orifice is raised to a certain height, drive the third hydraulic cylinder 413 on the auxiliary component 41 in the auxiliary structure 4 to extend in the same way. By the same principle, with the second supporting arm 414 turning in the second turning port 62 of the auxiliary arm 411, it contacts the ground for auxiliary support. Four-point support is formed by two second supporting arms 414 and two first supporting arms 12, and the support height of the second supporting arm 414 can be less than that of the first supporting arm 12, so that the pipe can be kept inclined relative to the ground, and the other end of the pipe will contact the ground, and the support at this time is more stable. Then, according to the cutting position, the adjusting seat 422 in the support component 42 can be moved in the transposition groove 63 of the adjusting track 421 to adjust the position of the clamping groove 64 at the other end of the supporting arm 424 below the pipe. Then, insert both ends of the supporting rod into the corresponding clamping grooves 64 of the supporting arm 424 for limiting, and then the supporting rod 43 can be attached to the lower wall of the pipe for auxiliary bearing. Drive the first electric slideway 23 in the cutting structure 2 to drive the machine arm 28 to descend, which can drive the cutting wheel 30 to descend. Drive the cutting wheel 30 to rotate by the motor 29 to cut the pipe (since the diameter of the cutting wheel 30 is smaller than the spacing of the first electric slideway 23, the maximum diameter of the pipe cannot exceed the diameter of the cutting wheel 30. The diameter of the cutting wheel 30 of the device and the spacing of the first electric slideway 23 need to be set according to the actual pipe to be cut). Since the cutting of the cutting wheel 30 is located between the supporting rod and the slideway 10, during the cutting process, the clamped and fixed end of the pipe is limited by clamping, while the end of the pipe is borne by the supporting rod 43. Therefore, the pipe can only be cut off, and the incision will not be fractured due to the gravity of the end, resulting in unevenness. After the device supports the pipe through the first support arm 12 and the second support arm 414, the second bolt 61 can be removed to separate the frame 25 from the socket 24, and the cutting wheel 30 can be held by the handle 26 for use; The cutting position of the cutting wheel 30, that is, the corresponding cutting length, can be infinitely increased by the docking of the first socket 20 and the second socket 21 and the insertion of the second socket 21 with the second socket 21, and is tightly fixed by the fastening bolt 22, so as to realize increasing the cutting position range of the cutting wheel 30; Then, the cutting wheel 30 is driven by the first driving slide rail to move within a certain range to automatically adjust the corresponding cutting length for cutting use. And the auxiliary arm 411 in the device can be disassembled from the first electric slide rail 23 by removing the third bolt 412, and disassembled from the first socket 20 or the second socket 21 of the electric slide rail to disassemble and transport the device.

[0047] The above are only the preferred embodiments of the present invention, and do not impose any formal restrictions on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A high-frequency welded pipe automatic fixed-length cutting device, characterized in that: It comprises a fixed structure (1), a cutting structure (2) and an auxiliary structure (4); the cutting structure (2) is detachably mounted on the fixed structure (1), the auxiliary structure (4) is detachably mounted on the cutting structure (2), and the auxiliary structure (4) corresponds to the fixed structure (1); The fixing structure (1) is used to clamp and fix the pipe mouth and to lift one end of the pipe mouth. The cutting structure (2) can be assembled according to the required cutting length of the pipe to increase the length and adjust the cutting position and implement cutting. The auxiliary structure (4) is used to provide auxiliary support for the end of the pipe to prevent cutting the ground and fracture due to gravity during the cutting process.

2. The high-frequency welded pipe automatic fixed-length cutting device according to claim 1 is characterized in that: The fixed structure (1) comprises a slideway (10), a handrail (11), a pair of first support arms (12), a pair of first hydraulic cylinders (13), a pair of first clamping arms (14), a second clamping arm (15), three second hydraulic cylinders (16) and three clamping rods (17); The slideway (10) is a semicircular structure, and arc-shaped adjustment grooves (50) are provided in the middle of both ends of the slideway (10). The handrail (11) is concave, and first flip openings (51) are provided in the middle of both ends of the handrail (11). Both ends of the handrail (11) are fixedly arranged on the right side walls of both ends of the slideway (10). One end of a pair of first support arms (12) is movably arranged on the lower wall of the right end of the handrail (11), and the other end of the first support arm (12) is located below the first flip opening (51). One end of a pair of first hydraulic cylinders (13) is movably embedded in the first flip openings (51) at both ends of the handrail (11), and the other end of the first hydraulic cylinder (13) is tilted to the right and movably connected to the first support arm (12). The pair of first clamping arms (14) are both L-shaped, and one end of the pair of first clamping arms (14) is movably arranged on the slideway (10). 0) at the first flip opening (51) at both ends, and the first clamp arm (14) and the slideway (10) are fixed by a first bolt (52) and a first nut (53), the other end of the first clamp arm (14) is located below the handrail (11), the second clamp arm (15) is L-shaped, and a lifting groove (54) is opened in the middle of one end of the second clamp arm (15), one end of the second clamp arm (15) is movably arranged in the middle of the left side wall of the slideway (10) by the first bolt (52) and the first nut (53), and the second clamp arm (15) can be raised and lowered to adjust the height, three second hydraulic cylinders (16) are respectively fixed on one end of the first clamp arm (14), one end of the three clamp rods (17) are respectively fixed on the telescopic end of the second hydraulic cylinder (16), and the clamp rods (17) correspond to the other end of the first clamp arm (14) and the other end of the second clamp arm (15).

3. The high-frequency welded pipe automatic fixed-length cutting device according to claim 2 is characterized in that: The cutting structure (2) comprises a pair of first receiving seats (20), a plurality of second receiving seats (21), a plurality of fastening bolts (22), a pair of first electric slide rails (23), a pair of sockets (24), a frame (25), a handle (26), a second electric slide rail (27), a machine arm (28), a motor (29) and a cutting wheel (30); A pair of the first sockets (20) are symmetrically arranged on both ends of the handrail (11), and the first socket (20) is a rectangular frame structure. A plurality of the second sockets (21) are convex structures, and the diameter of one end of the second socket (21) is larger than that of the other end. A plurality of the second sockets (21) are detachably inserted into the first socket (20), and the second sockets (21) are detachably inserted relative to each other. A plurality of the fastening bolts (22) are detachably screwed into the upper wall of the first socket (20) and the upper wall of one end of the second socket (21). A plurality of the fastening bolts (22) can be used for fixing the first socket (20) and the second socket (21) and fixing the second socket (21) and the second socket (21). One end of a pair of the first electric slide rails (23) is detachably inserted into the first socket (20) or the second socket (21). A pair of the sockets (24) are respectively The socket (24) is fixedly arranged on the first electric slide rail (23) and can move left and right. The pair of sockets (24) are both L-shaped, and the other end of the socket (24) is a tubular structure. The frame (25) is a door-shaped frame. The two ends of the frame (25) are respectively detachably inserted into the other end of the socket (24), and the frame (25) and the socket (24) are fixed by a second bolt (61). The handle (26) is fixedly arranged on the frame (25). The second electric slide rail (27) is vertically arranged in the middle of the left side wall of the frame (25). One end of the arm (28) is fixedly arranged on the second electric slide rail (27) and the arm (28) can be lifted and moved. The motor (29) is fixedly arranged on the other end of the arm (28), and the driving end of the motor (29) movably penetrates the arm (28). The cutting wheel (30) is detachably arranged on the driving end of the motor (29).

4. The high-frequency welded pipe automatic fixed-length cutting device according to claim 3 is characterized in that: The diameter of the cutting wheel (30) is smaller than the spacing between the first electric slide rails (23).

5. The high-frequency welded pipe automatic fixed-length cutting device according to claim 4 is characterized in that: The auxiliary structure (4) comprises a pair of auxiliary components (41), a pair of supporting components (42) and a supporting rod (43); A pair of the auxiliary components (41) are respectively detachably mounted on the other end of the first electric slide rail (23) and are symmetrical to each other; a pair of the support components (42) are respectively arranged on the auxiliary components (41) and are symmetrical to each other; and both ends of the support rod are detachably mounted on the support components (42).

6. The high-frequency welded pipe automatic fixed-length cutting device according to claim 5 is characterized in that: The auxiliary component (41) comprises an auxiliary arm (411), a pair of third bolts (412), a third hydraulic cylinder (413) and a second support arm (414); One end of the auxiliary arm (411) is detachably mounted on the other end of the first electric slide rail (23), and a second flip opening (62) is provided in the middle of the other end of the auxiliary arm (411). A pair of third bolts (412) are movably screwed into the front and rear side walls of one end of the auxiliary arm (411) and pressed against the side wall of the first electric slide rail (23). One end of the third hydraulic cylinder (413) is movably embedded in the right end of the second flip opening (62), and the telescopic end of the third hydraulic cylinder (413) is tilted to the left. One end of the second support arm (414) is movably connected to the second flip opening (62) of the other end of the auxiliary arm (411), and the other end of the second support arm (414) is tilted to the right and opposite to the first support arm (12). The second support arm (414) is movably connected to the telescopic end of the third hydraulic cylinder (413).

7. The automatic fixed-length cutting device for high-frequency welded pipes according to claim 6 is characterized in that: The support assembly (42) comprises an adjustment rail (421), an adjustment seat (422), a fourth bolt (423) and a support arm (424); The adjustment rail (421) is fixedly arranged on the auxiliary arm (411), and a transposition groove (63) is opened in the middle of the adjustment rail (421); the adjustment seat (422) is movably inserted in the transposition groove (63) of the adjustment rail (421), and the adjustment seat (422) moves left and right; the fourth bolt (423) is movably screwed to the middle of the adjustment seat (422) and is pressed against the adjustment rail (421); one end of the support arm (424) is fixedly arranged on the adjustment seat (422); the support arm (424) is L-shaped, and a plurality of inclined slots (64) are opened at equal intervals on the other end of the support arm (424); and the other end of the support arm (424) is located below the adjustment rail (421).

8. The high-frequency welded pipe automatic fixed-length cutting device according to claim 7 is characterized in that: Both ends of the support rod (43) are respectively clamped in the clamping grooves (64) of the support arm (424).

9. The high-frequency welded pipe automatic fixed-length cutting device according to claim 8, characterized in that: The first clamping arm (14) and the second clamping arm (15) can be clamped at the pipe mouth at three points by means of a clamping rod (17).

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