A high-frequency welded pipe automatic fixed-length cutting device

Abstract

The present invention discloses an automatic fixed-length cutting device for high-frequency welded pipes, comprising a fixed structure, a cutting structure and an auxiliary structure; the cutting structure is detachably mounted on the fixed structure, the auxiliary structure is detachably mounted on the cutting structure, and the auxiliary structure corresponds to the fixed structure; the fixed structure is used to clamp the fixed pipe mouth and lift one end of the pipe mouth, and the cutting structure can be assembled according to the required cutting length of the pipe, increase the length, adjust the cutting part and implement cutting. The present invention relates to the technical field of cutting machines. 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 inefficient transportation in the cutting of large-diameter high-frequency welded pipes. It has high precision, high flexibility and high safety, and significantly improves the automation level and production efficiency of high-frequency welded pipe processing.

Description

Technical Field

[0001] The invention relates to the technical field of cutting machines, in particular 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 tube blank to the welding temperature, and then applies pressure to achieve welding. Due to different uses, the diameter of the welded pipe varies, and most welded pipes are long. During use, they need to be cut to the corresponding length according to demand. Steel pipes with smaller diameters can be cut using existing simple cutting equipment or handheld cutting machines. However, some larger diameter pipes are difficult to cut circumferentially due to their length and weight. In particular, the corresponding length needs to be measured, and it is more labor-intensive and time-consuming to transport them to the equipment. They are also prone to falling and causing injuries. Summary of the Invention

[0003] The purpose of the present invention is to solve the technical problem of the inconvenience of cutting existing large-diameter high-frequency welded pipes raised in the above background technology, 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] In order to solve the above-mentioned problems, the present invention provides the following technical solutions: an automatic fixed-length cutting device for high-frequency welded pipes, comprising a fixed structure, a cutting structure and an auxiliary structure; the cutting structure is detachably mounted on the fixed structure, the auxiliary structure is detachably mounted on the cutting structure, and the auxiliary structure corresponds to the fixed structure; the fixed structure is used to clamp the fixed pipe mouth and lift one end of the pipe mouth; 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 implement cutting; the auxiliary structure is used to auxiliary support the end of the pipe to prevent cutting the ground and breakage due to gravity during the cutting process.

[0005] Preferably, the fixed structure includes a slide, an armrest, a pair of first 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 slide is a semicircular structure, and an arc-shaped adjustment groove is provided in the middle of both ends of the slide, the armrest is concave, and a first flip opening is provided in the middle of both ends of the armrest, the two ends of the armrest are fixedly arranged on the right side walls at both ends of the slide, one end of a pair of first arms is movably arranged on the lower wall of the right end of the armrest, and the other end of the first arm is located below the first flip opening, one end of a pair of first hydraulic cylinders is movably embedded in the first flip openings at both ends of the armrest, and the other end of the first hydraulic cylinder is tilted to the right and movably connected to the first arm On the arm, a pair of the first clamping arms are both L-shaped, and one end of the pair of the first clamping arms is movably set at the first flip opening parts at both ends of the slide, and the first clamping arm and the slide are fixed by a first bolt and a first nut, and the other end of the first clamping arm is located below the armrest, the second clamping arm is L-shaped, and a lifting groove is opened in the middle of one end of the second clamping arm, one end of the second clamping arm is movably set in the middle of the left side wall of the slide by the first bolt and the first nut, and the second clamping arm can be raised and lowered to adjust the height, the three second hydraulic cylinders are respectively fixed on one end of the first clamping arm, and one end of the three clamping rods are respectively fixed on the telescopic end of the second hydraulic cylinder, and the clamping rod corresponds to the other end of the first clamping arm and the other end of the second clamping arm.

[0006] Preferably, the slide is used for the first clamping arm to adjust the clamping position according to pipe grooves of different diameters, the second clamping arm is raised and lowered on the slide to adjust according to the diameter of the pipe to achieve three-point clamping, the armrest is used to apply force to move the transport equipment and carry the first arm, and the first hydraulic cylinder drives the first arm to flip and lift one side of the armrest.

[0007] Preferably, the cutting structure includes a pair of first seats, a number of second seats, a number of 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; a pair of the first seats are symmetrically arranged on both ends of the handrail, and the first seat is a rectangular frame structure, and the number of the second seats are all convex structures, and the diameter of one end of the second seat is larger than the other end, and the number of the second seats can be detachably inserted into the first seat, and the second seats can be detachably inserted relative to each other, and the number of the fastening bolts can be detachably screwed into the upper wall of the first seat and the upper wall of one end of the second seat, and the number of the fastening bolts can be used for fixing the first seat and the second seat and the second seat and the second seat. Fixed, one end of a pair of the first electric slide rails can be removably inserted into the first seat or the second seat respectively, a pair of the sockets are fixedly arranged on the first electric slide rail and the sockets can move left and right, a pair of the sockets are both L-shaped, and the other end of the socket is a tubular structure, the frame is a door-type frame, the two ends of the frame can be removably inserted into the other end of the socket, and the frame and the socket are fixed by a second bolt, the handle is fixed 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 be lifted and moved, the motor is fixed on the other end of the arm, and the motor drive end movably passes through the arm, and the cutting wheel is removably arranged on the motor drive end.

[0008] Preferably, the diameter of the cutting wheel is smaller than the spacing 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 first electric slide rail drives the cutting wheel to automatically adjust the cutting position within a certain range. The cutting wheel is driven to rotate by the motor and is 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 support components and a support rod; the pair of auxiliary components are respectively detachably mounted on the other end of the first electric slide rail and are symmetrical to each other, the pair of support components are respectively arranged on the auxiliary components and are symmetrical to each other, the two ends of the support rod are detachably placed on the support components, the auxiliary components are used to dock with the first driving slide rail and support and lift, and the support components are used to adjust the bearing position and height of the support rod.

[0011] Preferably, the auxiliary component includes an auxiliary arm, a pair of third bolts, a third hydraulic cylinder and a second support arm; one end of the auxiliary arm can be detachably mounted on the other end of the first electric slide rail, and a second flip opening is opened in the middle of the other end of the auxiliary arm, a pair of the third bolts are movably screwed into the front and rear side walls of one end of the auxiliary arm and pressed 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 flip opening, and the telescopic end of the third hydraulic cylinder is tilted to the left, one end of the second support arm is movably connected to the second flip opening of the other end of the auxiliary arm, and the other end of the second support arm is tilted to the right and opposite to the first support arm, and the second arm is movably connected to the telescopic end of the third hydraulic cylinder.

[0012] Preferably, the support assembly includes an adjustment rail, an adjustment seat, a fourth bolt and a support arm; the adjustment rail is fixedly provided on the auxiliary arm, and a transposition groove is provided in the middle of the adjustment rail, the adjustment seat is movably inserted in the transposition groove of the adjustment rail, and the adjustment seat moves left and right, the fourth bolt is movably screwed to the middle of the adjustment seat and tightened in the adjustment rail, one end of the support arm is fixedly provided on the adjustment seat, the support arm is L-shaped, and a number of inclined slots are equidistantly provided at the other end of the support arm, and the other end of the support arm is located below the adjustment rail.

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

[0014] Preferably, the first clamping arm and the second clamping arm can be clamped at the pipe mouth at three points by means of a clamping rod.

[0015] The invention proposes an automatic fixed-length cutting device for high-frequency welded pipes, which has the following beneficial effects:

[0016] 1. The three-point clamping structure formed by a pair of first and second clamping arms, combined with the clamping rod driven by the second hydraulic cylinder, can adjust the clamping position according to the diameter of the pipe (the first clamping arm moves through the slide adjustment slot, and the second clamping arm rises and falls through the lifting slot). This achieves stable fixation of high-frequency welded pipes of different diameters, solving the problem of traditional equipment not being able to firmly clamp large-diameter pipes.

[0017] 2. The first and second arms are driven to flip by the first and third hydraulic cylinders to form a front-to-back symmetrical four-point support system. This system can lift the pipe opening and tilt the pipe to prevent shaking or breakage caused by gravity during cutting, ensuring that the pipe remains self-stable during cutting. It is especially suitable for processing long-distance and heavy pipes.

[0018] 3. The first and second connectors utilize a convex plug-in connection and are secured with bolts. They can be infinitely connected to meet cutting length requirements, enabling flexible extension of the cutting structure. Simply adding a second connector expands the cutting range without replacing the entire machine, significantly improving the machine's adaptability to varying pipe lengths and reducing equipment costs for processing multiple specifications.

[0019] 4. The support assembly in the auxiliary structure can be moved on the adjustment track through the adjustment seat, and the support rod is fixed with the support arm slot to form a horizontal support for the end of the pipe. When cutting, the support rod and the clamping end of the fixed structure form a stable support at both ends, avoiding the deformation or burr problems of the incision caused by gravity in traditional suspended cutting, improving the flatness of the incision and significantly reducing the surface roughness.

[0020] 5. The equipment can be installed directly at the pipe placement location. The fixed structure clamps the pipe mouth and the auxiliary structure supports the end. There is no need to lift the pipe to a fixed cutting table, eliminating the 3-4 lifting and transportation steps in traditional processes, reducing manpower loss and safety risks. It is particularly suitable for construction sites or in-situ processing of large pipes.

[0021] In summary, the present invention systematically solves the problems of unstable clamping, limited cutting range, quality fluctuation and inefficient transportation in the cutting of large-diameter high-frequency welded pipes through innovative designs such as adaptive clamping, modular expansion, and auxiliary support. It combines high precision, high flexibility and high safety, and significantly improves the automation level and production efficiency of high-frequency welded pipe processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the fixed structure in;

[0024] Figure 3 for Figure 1 Schematic diagram of the auxiliary structure in ;

[0025] Figure 4 This is a schematic diagram of the split structure of the fixed structure of the present invention;

[0026] Figure 5 This is a schematic diagram of the splitting structure of the cutting structure of the present invention;

[0027] Figure 6 This is a schematic diagram of the auxiliary structure split structure of the present invention;

[0028] Figure 7 It is a schematic diagram of the cutting structure of the present invention;

[0029] Figure 8 for Figure 5 Schematic diagram of the structure at A in FIG;

[0030] Figure 9 for Figure 6 Schematic diagram of the structure at point B in the figure.

[0031] In the figure: 1. Fixing structure; 10. Slide; 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 receiving seat; 21. Second receiving seat; 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 assembly; 422, adjustment track; 423, adjustment seat; 424, fourth bolt; 425, support arm; 43, support rod; 51, first flipping mouth; 52, first bolt; 53, first nut; 54, lifting slot; 61, second bolt; 62, second flipping mouth; 63, transposition slot; 64, card slot. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] like Figures 1-9 As shown, the present invention provides a technical solution: an automatic fixed-length cutting device for high-frequency welded pipes, comprising a fixed structure 1; a cutting structure 2 is detachably mounted on the fixed structure 1, and an auxiliary structure 4 is detachably mounted on the cutting structure 2, and the auxiliary structure 4 corresponds to the fixed structure 1; the fixed structure 1 is used to clamp the fixed pipe mouth and lift one end of the pipe mouth, and the cutting structure 2 can be assembled according to the required cutting length of the pipe to increase the length and adjust the cutting part and implement cutting, and the auxiliary structure 4 is used to auxiliary support the end of the pipe to prevent cutting the ground and breakage due to gravity during the cutting process.

[0034] As a further solution of the present invention, the fixed structure 1 includes a slide 10, an armrest 11, a pair of first 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 slide 10 is a semicircular structure, and an arc-shaped adjustment groove 50 is provided in the middle of both ends of the slide 10, the armrest 11 is concave, and a first flipping opening 51 is provided in the middle of both ends of the armrest 11, and both ends of the handrail 11 are fixedly provided on the right side walls at both ends of the slide 10, one end of a pair of first arms 12 is movably provided on the lower wall of the right end of the handrail 11, and the other end of the first arm 12 is located below the first flipping opening 51, one end of a pair of first hydraulic cylinders 13 is movably embedded in the first flipping opening 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 arm 1 2, a pair of first clamping arms 14 are both L-shaped, one end of a pair of first clamping arms 14 are movably set at the first flip opening 51 at both ends of the slide 10, and the first clamping arm 14 and the slide 10 are fixed by a first bolt 52 and a first nut 53, the other end of the first clamping arm 14 is located below the handrail 11, the second clamping arm 15 is L-shaped, and a lifting slot 54 is opened in the middle of one end of the second clamping arm 15, one end of the second clamping arm 15 is movably set in the middle of the left side wall of the slide 10 by the first bolt 52 and the first nut 53, and the second clamping arm 15 can be lifted and lowered to adjust the height, three second hydraulic cylinders 16 are respectively fixed on one end of the first clamping arm 14, one end of the three clamping rods 17 are respectively fixed on the telescopic end of the second hydraulic cylinder 16, and the clamping rod 17 corresponds to the other end of the first clamping arm 14 and the other end of the second clamping arm 15, through the second hydraulic cylinder 16 With the telescopic movement, the clamping rod 17 can penetrate into the inner wall of the pipe or press against the outer wall, forming a three-point clamping force with the first clamping arm 14 and the second clamping arm 15 to achieve stable fixation of the pipe mouth.

[0035] Adapt the clamping position: According to the diameter of the pipe, loosen the first bolt 52 and slide the first clamping arm 14 along the adjustment slot 50 of the slide 10 to adjust its horizontal spacing; at the same time, adjust the vertical height of the second clamping arm 15 through the lifting slot 54 so that the three clamping points (the ends of the first clamping arm 14 and the second clamping arm 15 on both sides) and the clamping rod 17 form a triangular positioning that fits the outer wall of the pipe.

[0036] After tightening the first bolt 52 to fix the position, the second hydraulic cylinder 16 is activated 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 mouth.

[0037] Pipe lifting: When one end of the pipe opening needs to be lifted, the first hydraulic cylinder 13 is controlled to extend, pushing the first arm 12 to flip upward around the hinge point, and the right side of the slide 10 is driven to lift through the handrail 11, so that the pipe forms a certain inclination angle, which is convenient for the auxiliary structure 4 to support and cut the end.

[0038] As a further solution of the present invention, the cutting structure 2 includes a pair of first seats 20, a plurality of second 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, an arm 28, a motor 29 and a cutting wheel 30; a pair of first seats 20 are symmetrically arranged on both ends of the handrail 11, and the first seat 20 is a rectangular frame structure, and a plurality of second seats 21 are all convex structures, and the diameter of one end of the second seat 21 is larger than the other end, and a plurality of second seats 21 are respectively detachable and inserted into the first seat 20, and the second seats 21 are detachable and relatively inserted, and a plurality of the fastening bolts 22 are respectively detachable and screwed into the upper wall of the first seat 20 and the upper wall of one end of the second seat 21, and a plurality of the fastening bolts 22 can be used for fixing the first seat 20 and the second seat 21 and fixing the second seat 21 and the second seat 21, a pair of One end of the first electric slide rail 23 can be detachably inserted into the first socket 20 or the second socket 21, respectively. A pair of sockets 24 are respectively fixedly arranged on the first electric slide rail 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 sockets 24 is a tubular structure. The frame 25 is a door-type frame. The two ends of the frame 25 can be detachably inserted into the other end of the sockets 24, and the frame 25 and the sockets 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 raised and lowered. The motor 29 is fixedly arranged on the other end of the arm 28, and the driving end of the motor 29 movably passes 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 spacing of the first electric slide rail 23.

[0039] Length adjustment: According to the length of the pipe to be cut, select an appropriate number of second connectors 21 to be spliced ​​with the first connectors 20 and fix them with fastening bolts 22.

[0040] Position adjustment: The first electric slide 23 is used to adjust the position of the socket 24 and the frame 25 so that the cutting wheel 30 is aligned with the cutting position of the pipe. At the same time, the second electric slide 27 is used to adjust the height of the arm 28 and the cutting wheel 30 to match the cutting height of the pipe.

[0041] 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 cutting accuracy.

[0042] As a further solution of the present invention, the auxiliary structure 4 includes a pair of auxiliary components 41, a pair of support components 42 and a support rod 43; the pair of auxiliary components 41 are respectively detachably mounted on the other end of the first electric slide rail 23 and are symmetrical to each other, the pair of support components 42 are respectively arranged on the auxiliary components 41 and are symmetrical to each other, and the two ends of the support rod are detachably placed on the support components 42.

[0043] 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 support arm 414; one end of the auxiliary arm 411 can be detachably mounted on the other end of the first electric slide rail 23, and a second flipping opening 62 is opened 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 flipping 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 flipping opening 62 at 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, and the second support arm 414 is movably connected to the telescopic end of the third hydraulic cylinder 413.

[0044] Install the auxiliary component 41: Sleeve the auxiliary arm 411 onto the other end of the first electric slide rail 23 and fix it in a suitable position by tightening the third bolt 412.

[0045] Adjusting the support position: According to the length and cutting position of the pipe, the overall position of the auxiliary component 41 is adjusted through the first electric slide rail 23 so that the second arm 414 can accurately support the end of the pipe.

[0046] Supporting the end of the pipe: Activate the third hydraulic cylinder 413 to extend it, driving the second arm 414 to flip upward until the second arm 414 contacts the end of the pipe and provides stable support. During the cutting process, the second arm 414 works together with the first arm 12 in the fixed structure to ensure the stability of the pipe, reduce shaking and vibration during cutting, and improve cutting quality.

[0047] Reset operation: After the cutting is completed, the third hydraulic cylinder 413 is activated to retract, driving the second arm 414 to flip downward and return to the initial position. The auxiliary component 41 can then be disassembled or its position adjusted as needed to prepare for the next cutting operation.

[0048] As a further solution of the present invention, the support assembly 42 includes 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 tightened in 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 the other end of the support arm 424 is equidistantly opened with a number of inclined slots 64, and the other end of the support arm 424 is located below the adjustment rail 421.

[0049] Position adjustment: according to the position and length of the pipe, loosen the fourth bolt 423 to move the adjustment seat 422 left and right in the transposition groove 63 of the adjustment track 421, and adjust the support arm 424 to a suitable supporting position.

[0050] Fixing the adjustment seat: When the support arm 424 reaches the appropriate position, tighten the fourth bolt 423 to press against the adjustment rail 421, fix the adjustment seat 422 at the position, and ensure that the support arm 424 is stable.

[0051] Support the pipe: Place the support rod 43 in the slot 64 of the support arm 424, and use the support rod 43 to support the pipe. If the support position needs to be adjusted again, repeat the above steps, loosen the fourth bolt 423, adjust the position, and then tighten it.

[0052] As a further solution of the present invention, both ends of the support rod 43 are respectively clamped in the clamping grooves 64 of the support arm 424 for design clamping use.

[0053] As a further solution of the present invention, the first clamping arm 14 and the second clamping arm 15 can be clamped at three points on the pipe mouth by means of a clamping rod 17 to stabilize and fix the equipment and the pipe.

[0054] The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process. The specific operations are as follows.

[0055] The handrail 11 and the handle 26 can be used to move the device. The other ends of the first clamping arm 14 and the second clamping arm 15 of the fixed structure 1 are positioned on the outer wall of the pipe. The clamping rod 17 is inserted into the pipe groove. The second hydraulic cylinder 16 is retracted, and the clamping rod 17 and the first clamping arm 14 and the second clamping arm 15 are used to clamp the pipe. According to the diameter of the pipe, the first clamping arm 14 can be adjusted to move and flip in the adjustment groove 50 of the slide 10 by the first bolt 52 and the first nut 53, and the second clamping arm 15 can be adjusted to move up and down by the lifting groove 54, thereby realizing the spacing and position of the three clamping points.

[0056] After being clamped and fixed at three points, the first driving slide rail and the auxiliary arm 411 of the device are parallel to the axial direction of the pipe. At this time, the device can be powered on to control the first hydraulic cylinder 13 to extend and drive the first support arm 12 to flip. As the first arm 12 flips, the first hydraulic cylinder 13 flips to a matching angle in the first flip opening 51; then the symmetrically arranged first support arm 12 contacts the first surface and flips, thereby lifting one end of the clamped pipe and raising one side of the handrail 11.

[0057] After the clamped pipe mouth is raised to a certain height, the third hydraulic cylinder 413 on the auxiliary component 41 in the auxiliary structure 4 can be driven to extend and drive in the same manner. The same principle is used to flip the second support arm 414 in the second flipping mouth 62 of the auxiliary arm 411 to contact the ground for auxiliary support. The two second support arms 414 and the two first support arms 12 are supported at four points, and the support height of the second support arm 414 can be less than the support height of the first arm 12. This can keep the pipe tilted 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 adjustment seat 422 in the movable support assembly 42 moves in the transposition groove 63 of the adjustment rail 421, and the slot 64 at the other end of the adjustment arm 424 is located at the position below the pipe. Then, the two ends of the support rod are inserted into the corresponding support arm 424 slots 64 for limiting. The support rod 43 can be fitted with the lower wall of the pipe for auxiliary support.

[0058] The first electric slide rail 23 in the cutting mechanism 2 drives the machine arm 28 to descend, thereby driving the cutting wheel 30 to descend. The motor 29 drives the cutting wheel 30 to rotate and cut the pipe (because the diameter of the cutting wheel 30 is smaller than the spacing of the first electric slide rails 23, the maximum pipe diameter cannot exceed the diameter of the cutting wheel 30. The diameter of the cutting wheel 30 and the spacing of the first electric slide rails 23 of the equipment need to be set according to the actual pipe to be cut);

[0059] Since the cutting wheel 30 is located between the drag rod and the slide 10, during the cutting process, the clamped and fixed pipe end is held in place by the clamp, while the end of the pipe is supported by the support rod 43. Therefore, the pipe can only be cut apart, and the incision will not be broken or uneven due to the gravity of the end.

[0060] The device can also support the pipe by the first support arm 12 and the second support arm 414, remove the second bolt 61 to separate the frame 25 from the socket 24, and use the cutting wheel 30 by holding it with the handle 26;

[0061] The cutting position of the cutting wheel 30, that is, the corresponding cutting length, can be infinitely increased in length by docking the first seat 20 with the second seat 21 and plugging the second seat 21 with the second seat 21, and tightening and fixing it with the help of the fastening bolts 22, so as to increase the cutting position range of the cutting wheel 30; and 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, and the auxiliary arm 411 in the equipment can be disassembled from the first electric slide rail 23 by removing the third bolt 412, and the electric slide rail can be disassembled from the first seat 20 or the second seat 21 to disassemble and transport the equipment.

[0062] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still 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 opening and to lift one end of the pipe opening. The cutting structure (2) can be assembled according to the required cutting length of the pipe to increase the length of the pipe to adjust the cutting position and perform 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. 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 an arc-shaped adjustment groove (50) is provided in the middle of both ends of the slideway (10). The handrail (11) is concave, and a first flip opening (51) is 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 opening (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 a pair of first clamping arms (14) is movably arranged on the slideway (1 0) at both ends of the first flip opening (51), and the first clamping arm (14) and the slideway (10) are fixed by a first bolt (52) and a first nut (53), the other end of the first clamping arm (14) is located below the handrail (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 set 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 clamping 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 clamping arm (14), one end of the three clamping rods (17) are respectively fixed on the telescopic end of the second hydraulic cylinder (16), and the clamping rods (17) correspond to the other end of the first clamping arm (14) and the other end of the second clamping arm (15).

2. The high-frequency welded pipe automatic length cutting device according to claim 1 is characterized in that: The cutting structure (2) includes 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 seats (20) are symmetrically arranged on both ends of the handrail (11), and the first seat (20) is a rectangular frame structure. A plurality of the second seats (21) are convex structures, and the diameter of one end of the second seat (21) is larger than that of the other end. A plurality of the second seats (21) are detachably inserted into the first seat (20), and a plurality of the second seats (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 seat (20) and the upper wall of one end of the second seat (21). A plurality of the fastening bolts (22) can be used for fixing the first seat (20) and the second seat (21) and fixing the second seat (21) and the second seat (21). One end of a pair of the first electric slide rails (23) is detachably inserted into the first seat (20) or the second seat (21). A pair of the sockets (24) are respectively The first electric slide rail (23) is fixedly provided on the first electric slide rail (23) and the socket (24) can move left and right. A pair of the 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 provided on the frame (25). The second electric slide rail (27) is vertically provided in the middle of the left side wall of the frame (25). One end of the arm (28) is fixedly provided on the second electric slide rail (27) and the arm (28) can be lifted and moved. The motor (29) is fixedly provided on the other end of the arm (28), and the driving end of the motor (29) movably passes through the arm (28). The cutting wheel (30) is detachably provided on the driving end of the motor (29).

3. The automatic cutting-to-length device for high-frequency welded pipes according to claim 2, characterized in that: The diameter of the cutting wheel (30) is smaller than the spacing between the first electric slide rails (23).

4. The automatic cutting-to-length device for high-frequency welded pipes according to claim 3 is characterized in that: The auxiliary structure (4) comprises a pair of auxiliary components (41), a pair of support components (42) and a support rod (43); A pair of auxiliary components (41) are detachably mounted on the other end of the first electric slide rail (23) and are symmetrical to each other. A pair of support components (42) are symmetrically arranged on the auxiliary components (41). Both ends of the support rod (43) are detachably mounted on the support components (42).

5. The automatic cutting-to-length device for high-frequency welded pipes according to claim 4, characterized in that: The auxiliary assembly (41) includes 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).

6. The automatic cutting-to-length device for high-frequency welded pipes according to claim 5, characterized in that: The support assembly (42) includes 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 into 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 tightened in 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 the other end of the support arm (424) is equidistantly opened with a plurality of inclined slots (64). The other end of the support arm (424) is located below the adjustment rail (421).

7. The automatic cutting-to-length device for high-frequency welded pipes according to claim 6, characterized in that: Both ends of the support rod (43) are respectively clamped in the clamping grooves (64) of the support arm (424).

8. The automatic cutting-to-length device for high-frequency welded pipes according to claim 7, 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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