A method for producing a composite pipe with a multi-layer steel skeleton

Abstract

The present invention discloses a method for producing a composite pipe with a multi-layer steel skeleton, which relates to the technical field of pipeline production, and comprises the following steps: S1, welding, welding the skeleton of the composite pipe through a skeleton forming machine according to the number of skeleton layers, and then forming the composite pipe through the forming machine, S2, positioning: the composite pipe is internally wound with multiple layers of steel skeletons during the production process, and the production is continued, so that the composite pipe located above the frame gradually grows until the end of the composite pipe contacts the arc-shaped bonding plate, and the contact button is pressed to stop the production of the composite pipe. The present invention utilizes an adjustment motor to drive the adjustment screw to rotate, adjusts the position of the front magnetic suspension base and the rear magnetic suspension base, and supports and stabilizes the two sides of the cutting position of the composite pipe to prevent the composite pipe from being pressed by the cutting tool during cutting and causing concave deformation.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline production, in particular to a method for producing a composite pipe with a multi-layer steel skeleton. Background Art

[0002] With the industry's recognition, steel-plastic composite pipes have higher requirements for the diameter and pressure of pipes. The strength of the built-in skeleton of the pipe plays a decisive role in improving the pressure level of the pipe. The steel wire mesh skeleton plastic composite pipe is an improved new type of steel skeleton plastic composite pipe. This new type of pipeline uses high-strength plasticized steel wire mesh skeleton and thermoplastic polyethylene as raw materials. The steel wire winding mesh is used as the skeleton reinforcement of the polyethylene plastic pipe. High-density polyethylene (HDPE) is used as the matrix. High-performance HDPE modified adhesive resin is used to tightly connect the steel wire skeleton with the inner and outer layers of high-density polyethylene, so that it has an excellent composite effect. Because the high-strength steel wire reinforcement is coated in continuous thermoplastic plastics, this composite pipe overcomes the shortcomings of steel pipes and plastic pipes, while maintaining their respective advantages. In the process of pipeline production, it is necessary to cut the composite pipe after producing a certain length of composite pipe, which is convenient for storage and transportation of composite pipes, and meets the different lengths of composite pipes required in different situations.

[0003] However, the current multi-layer steel skeleton composite pipe has high structural strength and requires strong pressure when cutting. The interior of the pipe is hollow and lacks support. It is easily squeezed by the cutting equipment under strong pressure, causing the pipe to deform and damage the composite pipe. The composite pipe cannot be used normally after cutting, resulting in a waste of resources. Therefore, the present invention provides a method for producing a multi-layer steel skeleton composite pipe to meet people's needs. Summary of the invention

[0004] The present invention provides a method for producing a composite pipe with a multi-layer steel skeleton, which can effectively solve the problem proposed in the above background technology that the composite pipe with a multi-layer steel skeleton has high structural strength and requires strong pressure when cutting, while the interior of the pipe is hollow and lacks support. It is easy to be squeezed by the cutting equipment under strong pressure, resulting in deformation of the pipe and damage to the composite pipe, making it impossible to use the composite pipe after cutting, resulting in waste of resources.

[0005] To achieve the above object, the present invention provides the following technical solution: a method for producing a composite pipe with a multi-layer steel skeleton, comprising the following steps:

[0006] S1, welding, welding the skeleton of the composite pipe through a skeleton forming machine according to the number of skeleton layers, and then forming the composite pipe through a forming machine;

[0007] S2. Positioning: During the production process, the composite pipe is wrapped with multiple layers of steel skeletons. Continuous production makes the composite pipe located above the rack gradually grow until the end of the composite pipe contacts the arc-shaped laminating plate. Press the contact button to stop the production of the composite pipe.

[0008] S3, moving: the adjustment motor drives the adjusting screw to rotate, and the front magnetic suspension base and the rear magnetic suspension base move forward along the frame to the predetermined cutting position, and always fit the bottom of the composite pipe;

[0009] S4, pushing: the electric telescopic rod and the pushing frame push the front supporting circular magnetic block and the rear supporting circular magnetic block into the composite tube, and the driving seat drives the moving wheel to move, so that the front supporting circular magnetic block and the rear supporting circular magnetic block move to the predetermined position;

[0010] S5, suspension: the positions of the front supporting circular magnetic block and the rear supporting circular magnetic block correspond to the front magnetic suspension base and the rear magnetic suspension base one by one, and both are powered on to generate magnetic suspension, so that the front supporting circular magnetic block and the rear supporting circular magnetic block are suspended and fixed;

[0011] S6, cutting: the arc-shaped electromagnetic block moves, changes position, and is adsorbed on the surface of the composite tube. The cutting tool descends and cuts the composite tube from the gap between the front supporting circular magnetic block and the rear supporting circular magnetic block.

[0012] S7, disengagement: After cutting off, the adjusting screw rotates in the opposite direction, and the front magnetic suspension base and the rear magnetic suspension base move forward along the frame, away from the bottom of the composite pipe;

[0013] S8, unloading: the upper movable seat moves, and the arc-shaped electromagnetic block absorbs the cut composite pipe and moves it to the top of the auxiliary frame, and the cut composite pipe can be taken down.

[0014] According to the above technical solution, a composite pipe is placed above the frame, a molding machine is installed on one side of the top of the frame, a skeleton molding machine is installed at one end of the molding machine, and a supporting positioning mechanism is installed on the top of the frame;

[0015] The support and positioning mechanism includes an adjustment motor;

[0016] The top of the driving mechanism is equipped with a toothed structure, and the toothed structure is designed to be adjustable, and the toothed structure is made up of a plurality of adjusting screws, each of which is equipped with a plurality of adjusting screws. The adjusting screws are arranged on a plurality of movable blocks, and the movable block is arranged on a plurality of movable blocks at a plurality of rotations.

[0017] An extension frame is fixedly connected to one end of the frame, an electric telescopic rod is fixedly installed in the middle of one end of the top of the extension frame, and a pushing frame is fixedly connected to the end of the electric telescopic rod. A laser rangefinder is fixedly installed at one end of the top of the frame, a connecting block is fixedly installed in the middle of one end of the front magnetic levitation base, and a total reflection prism is installed in the middle of the connecting block.

[0018] According to the above technical solution, one end of the adjusting screw is connected to the output shaft of the adjusting motor, and the adjusting screw and the moving block are connected by a thread;

[0019] The bottom ends of the front magnetic levitation base and the rear magnetic levitation base are both in close contact with the top of the frame, the diameters of the front supporting circular magnetic block and the rear supporting circular magnetic block are the same as the diameter of the inner wall of the composite pipe, the front supporting circular magnetic block and the rear supporting circular magnetic block are both embedded in the interior of the composite pipe, the positions of the front supporting circular magnetic block, the rear supporting circular magnetic block and the front magnetic levitation base and the rear magnetic levitation base correspond one to one, the surface walls of the front supporting circular magnetic block and the rear supporting circular magnetic block are in contact with the inner wall of the composite pipe, and the top ends of the front magnetic levitation base and the rear magnetic levitation base are in contact with the surface wall of the composite pipe;

[0020] There is a gap between the top of the front magnetic suspension base and the inner wall of the front supporting circular magnetic block, and between the top of the rear magnetic suspension base and the inner wall of the rear supporting circular magnetic block. The wall thickness of the composite tube is the same as the gap.

[0021] According to the above technical solution, a driving motor is installed inside the driving seat, the bottom end of the moving wheel is flush with the bottom end of the front supporting circular magnetic block, and the moving wheel is closely attached to the inner wall of the composite pipe;

[0022] The positions of the fixed magnetic block and the adjusting electromagnetic block correspond to each other, and the cutting tool is located above the composite pipe.

[0023] According to the above technical solution, limit blocks are symmetrically installed at both ends of the driving seat, and limit grooves are symmetrically opened on the inner walls of the two sides of the pushing frame, the limit grooves correspond to the positions of the limit blocks, and the laser rangefinder and the total reflection prism are located on the same vertical plane.

[0024] According to the above technical solution, a bracket is fixedly installed on one side of the frame, and fixed blocks are symmetrically fixedly installed at both ends of the top of the bracket, and movable rods are installed through the middle of the two fixed blocks, and buffer springs are sleeved in the middle of the two movable rods. An extrusion plate is fixedly connected between the ends of the two movable rods, and an arc-shaped fitting plate is fixedly connected to one end of the extrusion plate, and a contact button is fixedly installed at one end of the middle of the extrusion plate close to the arc-shaped fitting plate;

[0025] A positioning cylinder is installed at one end edge of the front supporting circular magnetic block at equal distances along the circumferential direction, an extrusion circular block is movably installed between the ends of the positioning cylinder, and a pressure sensor is installed at the end of the front supporting circular magnetic block at equal distances along the circumferential direction.

[0026] According to the above technical solution, the diameter of the arc-shaped bonding plate is smaller than the diameter of the surface wall of the composite pipe, and the diameter of the arc-shaped bonding plate is larger than the diameter of the inner wall of the composite pipe;

[0027] The positioning cylinder and the pressure sensor are staggeredly distributed at the edge of the front supporting circular magnetic block, the inner surface of the extruding circular block fits with the end of the pressure sensor, and the diameter of the extruding circular block is the same as that of the front supporting circular magnetic block.

[0028] According to the above technical solution, a material transfer mechanism is installed on one side of the bottom of the frame;

[0029] The material transfer mechanism includes an auxiliary frame;

[0030] The top of the lifting gear is hinged on the base, and the lifting gear is hinged on the base to be used for the lifting of the lifting gear. The lifting gear is hinged on the base to be used for the lifting of the lifting gear. The lifting gear is hinged on the base to be used for the lifting of the lifting gear. The lifting gear is hinged on the base to be used for the lifting of the lifting gear.

[0031] A guide plate is installed at one end of the top of the auxiliary frame, a mounting frame is installed on one side of the top of the frame, a driving motor is installed at one end of the top of the mounting frame, rotating shafts are symmetrically installed at both ends of the top of the mounting frame, a conveyor belt is sleeved on the surface of the rotating shaft, a side baffle is installed at the top of the mounting frame at a position corresponding to the guide plate, and a positioning baffle is installed at one end of the top of the mounting frame close to the driving motor.

[0032] According to the above technical solution, a slide groove is symmetrically opened on the top of the mounting seat, a slider is symmetrically connected to the bottom end of the lower movable seat, the slider is movably clamped in the slide groove, the end of the hydraulic push rod is connected to one end of the lower movable seat, the bottom of the upper movable seat is movably embedded in the guide groove, the end of the electric adjustment rod is connected to the bottom of the upper movable seat, the height of the middle part of the arc-shaped electromagnetic block is the same as the height of the middle part of the composite tube, and the detection mirror and the total reflection prism are located at the same horizontal plane height.

[0033] According to the above technical solution, the surface in the middle of the guide plate and the bottom end of the inner wall of the composite tube are located at the same horizontal plane height, one end of the guide plate is flush with the end of the composite tube, the other end of the guide plate is in contact with the surface of the conveyor belt, the surface of the conveyor belt is flush with the surface of the guide plate, and the output shaft of the drive motor is connected to the end of a rotating shaft.

[0034] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0035] 1. A support and positioning mechanism is provided, and the adjustment motor is used to drive the adjustment screw to rotate, so that the moving block moves forward along the frame, and the positions of the front magnetic suspension base and the rear magnetic suspension base are adjusted, and the front magnetic suspension base and the rear magnetic suspension base are always in contact with the bottom surface of the composite pipe, and the electric telescopic rod drives the pushing frame forward, so that the driving seat and the rear supporting circular magnetic block can be pushed into the interior of the composite pipe, and the driving seat and the moving wheel can drive the rear supporting circular magnetic block and the front supporting circular magnetic block forward, and the front magnetic suspension base and the rear magnetic suspension base perform magnetic suspension support on the rear supporting circular magnetic block and the front supporting circular magnetic block, thereby supporting and stabilizing both sides of the cutting position of the composite pipe, preventing the composite pipe from being pressed by the cutting tool during cutting to cause concave deformation, improving the cutting stability, maintaining the integrity of the composite pipe, and using magnetic suspension to support the pipeline, so that the composite pipe is reinforced inside while remaining intact;

[0036] When adjusting the position, the rear supporting circular magnetic block and the front supporting circular magnetic block are fixedly connected by adsorption through the fixed magnetic block and the adjusting electromagnetic block. When cutting, the adjusting electromagnetic block changes its magnetic pole, generating a repulsive force between the fixed magnetic block and the adjusting electromagnetic block, so that the fixed magnetic block and the adjusting electromagnetic block are separated from each other, providing a certain space for cutting. The rear supporting circular magnetic block and the front supporting circular magnetic block are respectively located on both sides of the cutting position, which are more stable.

[0037] 2. Use the number of rotations of the adjusting screw to determine the distance the front magnetic levitation base moves, so that it corresponds to the cutting length and position of the composite pipe, so as to meet the cutting of composite pipes of different lengths, which is more convenient and quick. At the same time, use the laser rangefinder to emit laser to illuminate the total reflection prism on one side of the front magnetic levitation base to detect the position of the front magnetic levitation base after movement, so as to prevent cutting errors caused by incorrect forward distance of the front magnetic levitation base.

[0038] 3. The production extension of the composite pipe is monitored by using the arc-shaped bonding plate and the contact button. After the composite pipe is cut, it continues to be produced and moves forward. Its end will gradually approach the arc-shaped bonding plate. When the end of the composite pipe contacts the arc-shaped bonding plate, the extrusion plate will press on the contact button, and then the cutting operation can be performed. The position of one end of the composite pipe is determined and corresponds to the position of the front magnetic levitation base, and then the operation can be performed according to the required cutting length. The cutting is more precise. The movable rod and the buffer spring play a role of buffer protection to prevent the contact button from being damaged.

[0039] 4. Use the extrusion block to detect the inner wall size of the produced composite pipe. The extrusion block moves forward inside the composite pipe with the front supporting circular magnet. The inner wall size of the pipe is detected by whether the extrusion block can move forward smoothly. The deformation of the inner wall of the pipe will hinder the movement of the extrusion block and generate resistance. The extrusion block presses on the end of the pressure sensor to generate pressure to prevent the inner wall of the composite pipe from deforming during production, which may cause the pipe to be unable to be used normally. The internal changes of the composite pipe cannot be observed from the outside, and the detection method is simpler.

[0040] 5. A material unloading transfer mechanism is provided, which uses a hydraulic push rod to change the position of the lower moving seat, and at the same time the electric adjustment rod can drive the upper moving seat to move along the guide groove, so that the connecting frame and the arc-shaped electromagnetic block are close to and attached to the surface wall of the composite pipe during cutting, and the cut part of the composite pipe is adsorbed and fixed, and then the unloading operation is performed to keep it away from the top of the frame, which is convenient for subsequent production;

[0041] The position of the detection mirror is adjusted by using an electric push rod. The detection mirror and the laser rangefinder cooperate with each other to adjust and determine the positions of the lower moving seat and the upper moving seat, so that the upper moving seat corresponds to the middle of the cut part of the composite pipe. The two arc-shaped electromagnetic blocks can be adsorbed on the middle surface of the composite pipe, thereby improving the stability of adsorption and unloading.

[0042] To summarize, through the combination of the supporting positioning mechanism and the material transfer mechanism, after the composite pipe is cut off, the rotation of the adjusting screw will drive the front magnetic levitation base and the rear magnetic levitation base back to their original positions, and the rear supporting circular magnetic block and the front supporting circular magnetic block are adsorbed by the arc-shaped electromagnetic block inside the cut composite pipe and moved to the top of the auxiliary frame, and the composite pipe moves to one side of the guide plate, and the driving seat and the moving wheel will drive the rear supporting circular magnetic block and the front supporting circular magnetic block to move from the inside of the composite pipe to the surface of the guide plate, and then move to the surface of the conveyor belt, and be driven by the conveyor belt to a position close to the push frame, and the side baffle prevents the driving seat from slipping from the surface of the conveyor belt, and the positioning baffle positions the position of the driving seat so that the driving seat corresponds to the position of the pushing frame, and the next cutting, the pushing frame can smoothly push the driving seat, the rear supporting circular magnetic block and the front supporting circular magnetic block into the interior of the composite pipe, which cannot be adjusted manually and is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0044] In the attached picture:

[0045] Figure 1 It is a method step diagram of the present invention;

[0046] Figure 2 It is a structural schematic diagram of the frame of the present invention;

[0047] Figure 3 It is a schematic diagram of the installation structure of the arc-shaped electromagnetic block of the present invention;

[0048] Figure 4 It is a schematic diagram of the installation structure of the drive motor of the present invention;

[0049] Figure 5 It is a schematic diagram of the installation structure of the front supporting circular magnetic block of the present invention;

[0050] Figure 6 It is a schematic diagram of the installation structure of the laser rangefinder of the present invention;

[0051] Figure 7 It is a structural schematic diagram of the support and positioning mechanism of the present invention;

[0052] Figure 8 It is a schematic diagram of the installation structure of the regulating electromagnetic block of the present invention;

[0053] Fig. 9 It is a structural schematic diagram of the material transfer mechanism of the present invention;

[0054] Fig.10 It is a schematic diagram of the installation structure of the push frame of the present invention;

[0055] Numbers in the figure: 1, frame; 2, composite pipe;

[0056] 3. Support and positioning mechanism; 301. Adjustment motor; 302. Adjustment screw; 303. Moving block; 304. Front magnetic suspension base; 305. Rear magnetic suspension base; 306. Front support circular magnetic block; 307. Rear support circular magnetic block; 308. Driving seat; 309. Moving wheel; 310. Fixed magnetic block; 311. Adjustment electromagnetic block; 312. Support seat; 313. Hydraulic telescopic rod; 314. Cutting tool; 315. Extension frame; 316. Electric telescopic rod; 317. Push frame; 318. Laser rangefinder; 319. Connecting block; 320. Total reflection prism; 321. Bracket; 322. Fixed block; 323. Movable rod; 324. Buffer spring; 325. Extrusion plate; 326. Arc-shaped bonding plate; 327. Contact button; 328. Positioning cylinder; 329. Extrusion round block; 330. Pressure sensor;

[0057] 4. Material transfer mechanism; 401. Auxiliary frame; 402. Mounting seat; 403. Lower moving seat; 404. Hydraulic push rod; 405. Guide groove; 406. Upper moving seat; 407. Electric adjustment rod; 408. Connecting frame; 409. Arc electromagnetic block; 410. Electric push rod; 411. Movable block; 412. Fixed vertical block; 413. Detection mirror; 414. Guide plate; 415. Mounting frame; 416. Driving motor; 417. Rotating shaft; 418. Conveyor belt; 419. Side baffle; 420. Positioning baffle;

[0058] 5. Skeleton forming machine; 6. Forming machine. DETAILED DESCRIPTION

[0059] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0060] Example: Figure 1 As shown, the present invention provides a technical solution, a method for producing a composite pipe with a multi-layer steel skeleton, comprising the following steps:

[0061] S1, welding: the skeleton of the composite pipe is welded by the skeleton forming machine 5 according to the number of skeleton layers, and then the composite pipe is formed by the forming machine 6;

[0062] S2, positioning: during the production process, the composite pipe 2 is wound with multiple layers of steel skeletons, and the composite pipe 2 located above the frame 1 is continuously produced so that the composite pipe 2 gradually grows until the end of the composite pipe 2 contacts the arc-shaped laminating plate 326, and the contact button 327 is pressed to stop the production of the composite pipe 2;

[0063] S3, moving: the adjusting motor 301 drives the adjusting screw 302 to rotate, and the front magnetic suspension base 304 and the rear magnetic suspension base 305 move forward along the frame 1 to the predetermined cutting position, and always fit on the bottom of the composite pipe 2;

[0064] S4, pushing: the electric telescopic rod 316 and the pushing frame 317 push the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 into the composite pipe 2, and the driving seat 308 drives the moving wheel 309 to move, so that the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 move to a predetermined position;

[0065] S5, suspension: the positions of the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 correspond to the front magnetic suspension base 304 and the rear magnetic suspension base 305 one by one, and both are powered on to generate magnetic suspension, so that the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are suspended and fixed;

[0066] S6, cutting: the arc-shaped electromagnetic block 409 moves, changes its position, and is adsorbed on the surface of the composite tube 2. The cutting tool 314 descends and cuts the composite tube 2 from the gap between the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307.

[0067] S7, disengagement: after cutting off, the adjusting screw 302 rotates in the opposite direction, and the front magnetic suspension base 304 and the rear magnetic suspension base 305 move forward along the frame 1, away from the bottom of the composite pipe 2;

[0068] S8, unloading: the upper movable seat 406 moves, and the arc-shaped electromagnetic block 409 adsorbs the cut composite tube 2 and moves it to the top of the auxiliary frame 401, and the cut composite tube 2 is removed.

[0069] like Figure 2-10 As shown, a composite pipe 2 is placed above the frame 1, a molding machine 6 is installed on one side of the top of the frame 1, a skeleton molding machine 5 is installed at one end of the molding machine 6, and a supporting positioning mechanism 3 is installed on the top of the frame 1;

[0070] The supporting and positioning mechanism 3 includes an adjusting motor 301, an adjusting screw 302, a moving block 303, a front magnetic suspension base 304, a rear magnetic suspension base 305, a front supporting circular magnetic block 306, a rear supporting circular magnetic block 307, a driving seat 308, a moving wheel 309, a fixed magnetic block 310, an adjusting electromagnetic block 311, a supporting seat 312, a hydraulic telescopic rod 313, a cutting tool 314, an extension frame 315, an electric telescopic rod 316, a pushing frame 317, a laser rangefinder 318, a connecting block 319, a total reflection prism 320, a bracket 321, a fixed block 322, a movable rod 323, a buffer spring 324, an extrusion plate 325, an arc-shaped laminating plate 326, a contact button 327, a positioning cylinder 328, an extrusion circular block 329 and a pressure sensor 330;

[0071] An adjustment motor 301 is fixedly installed at one end of the top of the frame 1, an adjustment screw 302 is installed in the middle of the top of the frame 1, a moving block 303 is movably installed in the middle of the adjustment screw 302, one end of the adjustment screw 302 is connected to the output shaft of the adjustment motor 301, the adjustment screw 302 and the moving block 303 are connected by a thread, a front magnetic levitation base 304 is fixedly installed on the top of the moving block 303, one end of the front magnetic levitation base 304 is fixedly connected to a rear magnetic levitation base 305, a front supporting circular magnetic block 306 is installed above the front magnetic levitation base 304, a rear supporting circular magnetic block 307 is installed above the rear magnetic levitation base 305, and the bottom ends of the front magnetic levitation base 304 and the rear magnetic levitation base 305 are both close to the top of the frame 1. The diameters of the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are the same as the diameter of the inner wall of the composite tube 2. The front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are embedded in the interior of the composite tube 2. The positions of the front supporting circular magnetic block 306, the rear supporting circular magnetic block 307 and the front magnetic suspension base 304 and the rear magnetic suspension base 305 correspond one to one. The surface walls of the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are in contact with the inner wall of the composite tube 2. The top ends of the front magnetic suspension base 304 and the rear magnetic suspension base 305 are in contact with the surface wall of the composite tube 2. There is a gap between the top end of the front magnetic suspension base 304 and the inner wall of the front supporting circular magnetic block 306, and between the top end of the rear magnetic suspension base 305 and the inner wall of the rear supporting circular magnetic block 307. The composite tube 2 The wall thickness is the same as the spacing. A driving seat 308 is connected to the middle of one end of the rear supporting circular magnetic block 307. A moving wheel 309 is installed at the bottom of the driving seat 308. A driving motor is installed inside the driving seat 308. The bottom end of the moving wheel 309 is flush with the bottom end of the front supporting circular magnetic block 306. The moving wheel 309 is tightly attached to the inner wall of the composite pipe 2. A fixed magnetic block 310 is embedded and installed in the middle of the front supporting circular magnetic block 306 near one end of the rear supporting circular magnetic block 307. An adjusting electromagnetic block 311 is embedded and installed in the middle of the rear supporting circular magnetic block 307 near one end of the front supporting circular magnetic block 306. One end of the top of the moving block 303 is connected to a supporting seat 312. A hydraulic telescopic rod 313 is fixedly installed on the top of the supporting seat 312. The hydraulic telescopic rod 313 A cutting tool 314 is installed on the top, and the positions of the fixed magnetic block 310 and the adjusting electromagnetic block 311 correspond to each other. The cutting tool 314 is located above the composite pipe 2. The adjusting motor 301 is used to drive the adjusting screw 302 to rotate, so that the moving block 303 moves forward along the frame 1, and the positions of the front magnetic suspension base 304 and the rear magnetic suspension base 305 are adjusted. The front magnetic suspension base 304 and the rear magnetic suspension base 305 are always attached to the bottom end surface of the composite pipe 2, and the electric telescopic rod 316 drives the pushing frame 317 forward, which can push the driving seat 308 and the rear supporting circular magnetic block 307 into the interior of the composite pipe 2, and the driving seat 308 and the moving wheel 309 can drive the rear supporting circular magnetic block 307 and the front supporting circular magnetic block 306 to move forward.The front magnetic suspension base 304 and the rear magnetic suspension base 305 magnetically suspend and support the rear supporting circular magnetic block 307 and the front supporting circular magnetic block 306, thereby firmly supporting both sides of the cutting position of the composite pipe 2, preventing the composite pipe 2 from being pressed by the cutting tool 314 during cutting and causing depression and deformation, thereby improving the cutting stability and maintaining the integrity of the composite pipe 2. The magnetic suspension is used to support the pipeline, so that the composite pipe 2 is strengthened inside while remaining intact;

[0072] When adjusting the position, the rear supporting circular magnetic block 307 and the front supporting circular magnetic block 306 are fixedly connected by adsorption through the fixed magnetic block 310 and the adjusting electromagnetic block 311. When cutting, the adjusting electromagnetic block 311 changes its magnetic pole, and generates a repulsive force with the fixed magnetic block 310, so that the fixed magnetic block 310 and the adjusting electromagnetic block 311 are separated from each other, providing a certain space for cutting. The rear supporting circular magnetic block 307 and the front supporting circular magnetic block 306 are respectively located on both sides of the cutting position, which has stronger stability.

[0073] An extension frame 315 is fixedly connected to one end of the frame 1, an electric telescopic rod 316 is fixedly installed in the middle of one end of the top of the extension frame 315, and a push frame 317 is fixedly connected to the end of the electric telescopic rod 316. A laser rangefinder 318 is fixedly installed at one end of the top of the frame 1, a connecting block 319 is fixedly installed in the middle of one end of the front magnetic suspension base 304, and a total reflection prism 320 is installed in the middle of the connecting block 319. Limiting blocks are symmetrically installed at both ends of the driving seat 308, and limiting grooves are symmetrically provided on the inner walls of the two sides of the push frame 317, and the limiting grooves are relatively located with respect to the limiting blocks. The laser rangefinder 318 and the total reflection prism 320 are located on the same vertical plane, and the distance moved by the front magnetic suspension base 304 is determined by the number of rotations of the adjusting screw 302, so that it corresponds to the cutting length and position of the composite pipe 2, so as to meet the cutting of composite pipes 2 of different lengths, which is more convenient and quick. At the same time, the laser rangefinder 318 emits a laser to illuminate the total reflection prism 320 on one side of the front magnetic suspension base 304, and the position of the front magnetic suspension base 304 after moving is detected, so as to prevent the front magnetic suspension base 304 from having an incorrect forward distance and causing a cutting error;

[0074] A bracket 321 is fixedly installed on one side of the frame 1, and fixed blocks 322 are symmetrically fixedly installed on both ends of the top of the bracket 321. A movable rod 323 is installed through the middle of the two fixed blocks 322, and a buffer spring 324 is sleeved on the middle of the two movable rods 323. An extrusion plate 325 is fixedly connected between the ends of the two movable rods 323, and an arc-shaped fitting plate 326 is fixedly connected to one end of the extrusion plate 325. The diameter of the arc-shaped fitting plate 326 is smaller than the diameter of the surface wall of the composite pipe 2, and the diameter of the arc-shaped fitting plate 326 is larger than the diameter of the inner wall of the composite pipe 2, so that the composite pipe 2 can touch it when it moves forward, and the front supporting circular magnetic block 306 will not contact and hinder it when passing through. The middle part of the extrusion plate 325 is close to the arc-shaped fitting plate A contact button 327 is fixedly installed at one end of the joint plate 326. The arc-shaped joint plate 326 and the contact button 327 are used to monitor the production extension of the composite pipe 2. After the composite pipe 2 is cut, it continues to produce and move forward, and its end will gradually approach the arc-shaped joint plate 326. When the end of the composite pipe 2 contacts the arc-shaped joint plate 326, the extrusion plate 325 will press on the contact button 327, and then the cutting operation can be performed. The position of one end of the composite pipe 2 is determined and corresponds to the position of the front magnetic suspension base 304, and then the operation can be performed according to the required cutting length, and the cutting is more accurate. The movable rod 323 and the buffer spring 324 play a role of buffer protection to prevent the contact button 327 from being damaged.

[0075] A positioning cylinder 328 is installed at one end of the front support circular magnetic block 306 at equal intervals along the circumferential direction, and an extrusion block 329 is movably installed between the ends of the positioning cylinder 328. A pressure sensor 330 is installed at the end of the front support circular magnetic block 306 at equal intervals along the circumferential direction. The positioning cylinder 328 and the pressure sensor 330 are staggered and distributed at the edge of the front support circular magnetic block 306. The inner surface of the extrusion block 329 fits with the end of the pressure sensor 330. The diameter of the extrusion block 329 is the same as that of the front support circular magnetic block 306. The round block 329 detects the inner wall size of the produced composite pipe 2. The extrusion round block 329 moves forward inside the composite pipe 2 along with the front supporting round magnetic block 306. The inner wall size of the pipe is detected by checking whether the extrusion round block 329 can move forward smoothly. The deformation of the inner wall of the pipe will hinder the movement of the extrusion round block 329 and generate resistance. The extrusion round block 329 presses on the end of the pressure sensor 330 to generate pressure to prevent the inner wall of the composite pipe 2 from deforming during production, which causes the pipe to be unable to be used normally. The internal changes of the composite pipe 2 cannot be observed from the outside, and the detection method is simpler.

[0076] A material transfer mechanism 4 is installed on one side of the bottom of the frame 1;

[0077] The material transfer mechanism 4 includes an auxiliary frame 401, a mounting seat 402, a lower moving seat 403, a hydraulic push rod 404, a guide groove 405, an upper moving seat 406, an electric adjustment rod 407, a connecting frame 408, an arc-shaped electromagnetic block 409, an electric push rod 410, a movable block 411, a fixed vertical block 412, a detection mirror 413, a guide plate 414, a mounting frame 415, a driving motor 416, a rotating shaft 417, a conveyor belt 418, a side baffle 419 and a positioning baffle 420;

[0078] An auxiliary frame 401 is fixedly installed at one end of the bottom of the frame 1, a mounting seat 402 is installed in the middle of the top of the auxiliary frame 401, a lower moving seat 403 is movably installed on the top of the mounting seat 402, a slide groove is symmetrically opened on the top of the mounting seat 402, and a slider is symmetrically connected to the bottom end of the lower moving seat 403, and the slider is movably connected to the inside of the slide groove, a hydraulic push rod 404 is installed at one end of the top of the auxiliary frame 401, a guide groove 405 is opened on the top of the lower moving seat 403, an upper moving seat 406 is movably installed on the top of the lower moving seat 403, an electric adjustment rod 407 is fixedly installed inside the lower moving seat 403, the end of the hydraulic push rod 404 is connected to one end of the lower moving seat 403, and the bottom of the upper moving seat 406 is connected to the bottom of the lower moving seat 406. The end of the electric adjustment rod 407 is movably embedded in the guide groove 405, and the end of the electric adjustment rod 407 is connected to the bottom of the upper movable seat 406. The two ends of the top of the upper movable seat 406 are symmetrically fixedly installed with connecting frames 408, and the top ends of the two connecting frames 408 are both installed with arc-shaped electromagnetic blocks 409. An electric push rod 410 is installed in the middle of the top of the upper movable seat 406, and one end of the electric push rod 410 is fixedly connected to a movable block 411. A fixed vertical block 412 is installed in the middle of the top of the movable block 411, and a detection mirror 413 is installed in the middle of one end of the fixed vertical block 412. The height of the middle of the arc-shaped electromagnetic block 409 is the same as the height of the middle of the composite pipe 2, and the detection mirror 413 and the total reflection prism 320 are located at the same horizontal plane height;

[0079] A guide plate 414 is installed at one end of the top of the auxiliary frame 401, a mounting frame 415 is installed on one side of the top of the frame 1, a drive motor 416 is installed at one end of the top of the mounting frame 415, and rotating shafts 417 are symmetrically installed at both ends of the top of the mounting frame 415. A conveyor belt 418 is sleeved on the surface of the rotating shaft 417. The surface of the middle part of the guide plate 414 is at the same horizontal plane height as the bottom end of the inner wall of the composite pipe 2. One end of the guide plate 414 is flush with the end of the composite pipe 2, and the other end of the guide plate 414 is in contact with the surface of the conveyor belt 418. The surface of the conveyor belt 418 is flush with the surface of the guide plate 414. The output shaft of the drive motor 416 is The ends of a rotating shaft 417 are connected, and a side baffle 419 is installed at the top of the mounting frame 415 at the corresponding position of the guide plate 414. A positioning baffle 420 is installed at the end of the top of the mounting frame 415 close to the driving motor 416. The hydraulic push rod 404 is used to change the position of the lower moving seat 403. At the same time, the electric adjustment rod 407 can drive the upper moving seat 406 to move along the guide groove 405, so that the connecting frame 408 and the arc-shaped electromagnetic block 409 are close to and attached to the surface wall of the composite pipe 2 during cutting, and the cut part of the composite pipe 2 is adsorbed and fixed, and then the material is unloaded to keep it away from the top of the frame 1, so as to facilitate the subsequent production.

[0080] The position of the detection mirror 413 is adjusted by using the electric push rod 410. The detection mirror 413 and the laser rangefinder 318 cooperate with each other to adjust and determine the positions of the lower movable seat 403 and the upper movable seat 406, so that the upper movable seat 406 corresponds to the middle of the cut portion of the composite pipe 2. The two arc-shaped electromagnetic blocks 409 can be adsorbed on the middle surface of the composite pipe 2, which makes the material discharge more balanced and improves the stability of the adsorption and discharge.

[0081] The rear supporting circular magnetic block 307 and the front supporting circular magnetic block 306 are attracted by the arc-shaped electromagnetic block 409 inside the cut composite pipe 2 and moved to the top of the auxiliary frame 401, and the composite pipe 2 moves to the side of the guide plate 414, and the driving seat 308 and the moving wheel 309 will drive the rear supporting circular magnetic block 307 and the front supporting circular magnetic block 306 to move from the inside of the composite pipe 2 to the surface of the guide plate 414, and then move to the surface of the conveyor belt 418, and be driven by the conveyor belt 418 to a position close to the push frame 317, and the side baffle 419 prevents the driving seat 308 from sliding off the surface of the conveyor belt 418, and the positioning baffle 420 positions the position of the driving seat 308 so that the driving seat 308 corresponds to the position of the pushing frame 317. During the next cutting, the pushing frame 317 can smoothly push the driving seat 308, the rear supporting circular magnetic block 307 and the front supporting circular magnetic block 306 into the composite pipe 2, which cannot be adjusted manually and is more convenient.

[0082] The working principle and use process of the present invention are as follows: First, the skeleton forming frame 5 wraps and welds the steel skeleton on the surface of the pipe according to the required number of layers to strengthen the structural strength of the pipe. After being wrapped with multiple layers of steel skeletons, the pipe is extruded and coated inside the forming machine 6 to form a composite pipe 2. The composite pipe 2 is continuously produced and moves forward. One end of the composite pipe 2 gradually approaches the arc-shaped bonding plate 326 until the end of the composite pipe 2 contacts the arc-shaped bonding plate 326. The buffer spring 324 is pressed, and the movable rod 323 moves forward along the fixed block 322. The extrusion plate 325 moves inward and fits on the end of the contact button 327, stopping the equipment and suspending the production of the composite pipe 2.

[0083] According to the length of the composite pipe 2 to be cut, the adjustment motor 301 is started to drive the adjustment screw 302 to rotate clockwise, the moving block 303 moves forward along the top of the frame 1, the front magnetic suspension base 304 and the rear magnetic suspension base 305 move close to the bottom of the composite pipe 2, the hydraulic telescopic rod 313 and the cutting tool 314 move together with the front magnetic suspension base 304, and the electric telescopic rod 316 extends, and the push frame 317 pushes the drive seat 308 forward, so that the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are both embedded in the interior of the composite pipe 2, and the adjusting electromagnetic block 311 is energized, and the end magnetic poles corresponding to the fixed magnetic block 310 are opposite. The rear supporting circular magnetic blocks 307 are fixedly connected by adsorption through the fixed magnetic block 310 and the adjusting electromagnetic block 311. The driving seat 308 drives the moving wheel 309 to rotate, pushing the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 to move forward inside the composite pipe 2. The extrusion circular block 329 detects the inner wall of the composite pipe 2. If the inner wall of the composite pipe 2 is deformed during the production process, the extrusion circular block 329 encounters resistance when moving forward, and presses on the end of the pressure sensor 330, reminding the staff that this section of the composite pipe 2 does not meet the requirements and needs to adjust the equipment and the production pipeline. If the inner wall diameter of the composite pipe 2 meets the requirements, the extrusion circular block 329 and the front supporting circular magnetic block 306 can move forward smoothly.

[0084] The number of revolutions of the adjusting screw 302 corresponds to the distance traveled by the moving block 303. According to the required position, the adjusting screw 302 is rotated by the corresponding number of revolutions, so that the front magnetic suspension base 304 and the rear magnetic suspension base 305 are moved to the predetermined position, and there is a certain distance between the front magnetic suspension base 304 and the rear magnetic suspension base 305. At the same time, the connecting block 319 and the total reflection prism 320 move forward together. After the moving block 303 is stationary, the laser rangefinder 318 is started, and the rays are emitted to illuminate the total reflection prism 320, and then emitted to the laser rangefinder 318. The round-trip time of the rays and the speed of the rays can be used to detect the distance traveled by the moving block 303, and determine whether the position of the cutting tool 314 corresponds to the predetermined cutting position. If there is a deviation in the position, it can be adjusted in time.

[0085] Then, the driving seat 308 drives the moving wheel 309 to move to a certain position, adjusts the electromagnetic block 311 to change the magnetic pole, generates a repulsive force with the same magnetic pole between the fixed magnetic block 310, and pushes the front supporting circular magnetic block 306 to move a certain distance, so that a gap appears between the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307. The front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 correspond to the positions of the front magnetic suspension base 304 and the rear magnetic suspension base 305. The front supporting circular magnetic block 306 is located at the front magnetic suspension base 304. , the rear supporting circular magnetic block 307 is located directly above the rear magnetic suspension base 305, the front magnetic suspension base 304 and the rear magnetic suspension base 305 are started, the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are also powered on and started at the same time, and a magnetic force is generated between the front supporting circular magnetic block 306 and the front magnetic suspension base 304, so that the front supporting circular magnetic block 306 is suspended by the magnetic force. Similarly, the rear supporting circular magnetic block 307 is also suspended by the magnetic force. There is a steel skeleton inside the composite pipe 2, and the magnetic force also adsorbs the composite pipe 2;

[0086] Next, the electric adjustment rod 407 contracts, pulling the upper moving seat 406 to move along the guide groove 405, and the electric push rod 410 extends, pushing the movable block 411 and the detection mirror 413 to the predetermined position. The detection mirror 413 corresponds to the laser rangefinder 318. According to the position of the moving block 303 detected by the laser rangefinder 318 and the position of the detection mirror 413 at this time, the hydraulic push rod 404 pushes the lower moving seat 403 forward, so that the detection mirror 413 corresponds to the center position of the composite pipe 2, and the connecting frame 408 and the arc-shaped electromagnetic block 409 gradually approach the surface of the middle part of the composite pipe 2. The arc-shaped electromagnetic block 409 is energized to generate magnetic force, and adheres to the middle surface of the part of the composite pipe 2 that is about to be cut off;

[0087] The distance between the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 corresponds to the cutting position of the composite pipe 2. The hydraulic telescopic rod 313 drives the cutting tool 314 to move downward, and the cutting tool 314 cuts the composite pipe 2. The front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are respectively located on both sides of the cutting position to support the pipes on both sides so that the pipes will not be pressed and deformed during cutting. The composite pipe 2 is supported by the front magnetic suspension base 304 and the rear magnetic suspension base 305, and is fixed by the arc-shaped electromagnetic block 409 at the same time, so that the composite pipe 2 will not shake violently during cutting. The front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are suspended and fixed by the front magnetic suspension base 304 and the rear magnetic suspension base 305, and their positions will not be easily offset.

[0088] Until the composite pipe 2 is cut, the cutting tool 314 rises, the front magnetic suspension base 304 and the rear magnetic suspension base 305 are powered off and closed, the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are no longer suspended and fixed, the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are also powered off and closed, and no longer have magnetism, the electromagnetic block 311 is adjusted to change the magnetic pole, and the fixed magnetic block 310 is adsorbed, so that the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are adsorbed and attached to each other, and the adjustment motor 301 drives the adjustment screw 302 to rotate counterclockwise, so that the moving block 303, the front magnetic suspension base 304 and the rear magnetic suspension base 305 return to their original positions, away from the bottom of the composite pipe 2, and the driving seat 308 also drives the moving wheel 309 to move forward, so that the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are both located inside the cut part of the composite pipe 2;

[0089] The electric adjustment rod 407 extends forward, pushing the upper moving seat 406 to move along the guide groove 405, and the arc-shaped electromagnetic block 409 will adsorb the cut composite pipe 2, making it gradually move away from the frame 1, while the remaining composite pipes 2 continue to be produced and move forward. The end of the adsorbed composite pipe 2 is in contact with one end of the guide plate 414, and the driving seat 308 drives the moving wheel 309 to move inside the composite pipe 2, so that the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 are separated from the inside of the composite pipe 2 and move from the middle of the guide plate 414 to the surface of the conveyor belt 418. The arc-shaped electromagnetic block 409 is powered off, and the staff can remove the cut composite pipe 2, and the driving motor 416 is driven The movable rotating shaft 417 rotates, and the conveyor belt 418 is used to transport the front supporting circular magnetic block 306 and the rear supporting circular magnetic block 307 to one side of the positioning baffle 420. The positioning baffle 420 plays a positioning role, so that the driving seat 308 corresponds to the position of the pushing frame 317, and the limiting grooves on the inner walls of the two sides of the pushing frame 317 correspond to the limiting blocks at both ends of the driving seat 308, so that the driving seat 308 can be sent into the composite pipe 2 that needs to be cut again by the pushing frame 317 later. When the pushing frame 317 moves forward, the limiting blocks will be embedded in the limiting grooves, and then the pushing frame 317 moves forward, which will drive the driving seat 308 to move forward together, and the driving seat 308 will not fall when it is suspended in the air.

[0090] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A method for producing a multi-layer steel skeleton composite pipe, characterized in that: The steps include: S1, welding, welding the composite pipe skeleton through a skeleton forming machine (5) according to the number of skeleton layers, and then forming the composite pipe through a forming machine (6); S2, positioning: during the production process, the composite pipe (2) is internally wound with multiple layers of steel skeletons, and the production is continued, so that the composite pipe (2) located above the frame (1) gradually grows until the end of the composite pipe (2) contacts the arc-shaped laminating plate (326), and the contact button (327) is pressed to stop the production of the composite pipe (2); S3, moving: the adjusting motor (301) drives the adjusting screw (302) to rotate, and the front magnetic suspension base (304) and the rear magnetic suspension base (305) move forward along the frame (1) to a predetermined cutting position and always fit the bottom of the composite pipe (2); S4, pushing: the electric telescopic rod (316) and the pushing frame (317) push the front supporting circular magnetic block (306) and the rear supporting circular magnetic block (307) into the composite tube (2), and the driving seat (308) drives the moving wheel (309) to move, so that the front supporting circular magnetic block (306) and the rear supporting circular magnetic block (307) move to a predetermined position; S5, suspension: the positions of the front supporting circular magnetic block (306) and the rear supporting circular magnetic block (307) correspond to the front magnetic suspension base (304) and the rear magnetic suspension base (305) one by one, and both are powered on to generate magnetic suspension, so that the front supporting circular magnetic block (306) and the rear supporting circular magnetic block (307) are suspended and fixed; S6, cutting: the arc-shaped electromagnetic block (409) moves, changes position, and is adsorbed on the surface of the composite tube (2), and the cutting tool (314) descends to cut the composite tube (2) from the gap between the front supporting circular magnetic block (306) and the rear supporting circular magnetic block (307); S7, disengagement: after the cutting, the adjusting screw (302) rotates in the opposite direction, and the front magnetic suspension base (304) and the rear magnetic suspension base (305) move forward along the frame (1) and away from the bottom of the composite pipe (2); S8, unloading: the upper movable seat (406) moves, and the arc-shaped electromagnetic block (409) adsorbs the cut composite tube (2) and moves it to the top of the auxiliary frame (401), and the cut composite tube (2) is removed; A composite pipe (2) is placed above the frame (1), a molding machine (6) is installed on one side of the top of the frame (1), a skeleton molding machine (5) is installed at one end of the molding machine (6), and a supporting positioning mechanism (3) is installed on the top of the frame (1); The supporting and positioning mechanism (3) comprises an adjustment motor (301); An adjustment motor (301) is fixedly mounted on one end of the top of the frame (1); an adjustment screw (302) is mounted in the middle of the top of the frame (1); a moving block (303) is movably mounted in the middle of the adjustment screw (302); a front magnetic suspension base (304) is fixedly mounted on the top of the moving block (303); one end of the front magnetic suspension base (304) is fixedly connected to a rear magnetic suspension base (305); a front supporting circular magnetic block (306) is mounted above the front magnetic suspension base (304); a rear supporting circular magnetic block (307) is mounted above the rear magnetic suspension base (305); and a rear supporting circular magnetic block (307) is mounted on the rear magnetic suspension base (307). A driving seat (308) is connected to the middle of one end, a moving wheel (309) is installed at the bottom of the driving seat (308), a fixed magnetic block (310) is embedded and installed at one end of the middle of the front supporting circular magnetic block (306) close to the rear supporting circular magnetic block (307), an adjusting electromagnetic block (311) is embedded and installed at one end of the middle of the rear supporting circular magnetic block (307) close to the front supporting circular magnetic block (306), one end of the top of the moving block (303) is connected to a supporting seat (312), a hydraulic telescopic rod (313) is fixedly installed at the top of the supporting seat (312), and a cutting tool (314) is installed at the top of the hydraulic telescopic rod (313); An extension frame (315) is fixedly connected to one end of the frame (1); an electric telescopic rod (316) is fixedly mounted in the middle of one end of the top of the extension frame (315); a push frame (317) is fixedly connected to the end of the electric telescopic rod (316); a laser rangefinder (318) is fixedly mounted to one end of the top of the frame (1); a connection block (319) is fixedly mounted in the middle of one end of the front magnetic suspension base (304); and a total reflection prism (320) is mounted in the middle of the connection block (319); One end of the adjusting screw (302) is connected to the output shaft of the adjusting motor (301), and the adjusting screw (302) and the moving block (303) are connected via a thread; The bottom ends of the front magnetic suspension base (304) and the rear magnetic suspension base (305) are both in close contact with the top end of the frame (1); the diameters of the front supporting circular magnetic block (306) and the rear supporting circular magnetic block (307) are both the same as the diameter of the inner wall of the composite tube (2); the front supporting circular magnetic block (306) and the rear supporting circular magnetic block (307) are both embedded in the interior of the composite tube (2); the positions of the front supporting circular magnetic block (306), the rear supporting circular magnetic block (307) and the front magnetic suspension base (304), and the rear magnetic suspension base (305) correspond one to one; the surface walls of the front supporting circular magnetic block (306) and the rear supporting circular magnetic block (307) are in contact with the inner wall of the composite tube (2); and the top ends of the front magnetic suspension base (304) and the rear magnetic suspension base (305) are in contact with the surface wall of the composite tube (2); There is a gap between the top of the front magnetic suspension base (304) and the inner wall of the front supporting circular magnetic block (306), and between the top of the rear magnetic suspension base (305) and the inner wall of the rear supporting circular magnetic block (307), and the wall thickness of the composite tube (2) is the same as the gap; A material unloading transfer mechanism (4) is installed on one side of the bottom of the frame (1); The material transfer mechanism (4) comprises an auxiliary frame (401); An auxiliary frame (401) is fixedly mounted on one end of the bottom of the frame (1); a mounting seat (402) is mounted in the middle of the top of the auxiliary frame (401); a lower movable seat (403) is movably mounted on the top of the mounting seat (402); a hydraulic push rod (404) is mounted on one end of the top of the auxiliary frame (401); a guide groove (405) is provided on the top of the lower movable seat (403); an upper movable seat (406) is movably mounted on the top of the lower movable seat (403); and an electric push rod (404) is fixedly mounted inside the lower movable seat (403). An adjusting rod (407), connecting frames (408) are symmetrically fixedly installed at both ends of the top of the upper movable seat (406), arc-shaped electromagnetic blocks (409) are installed at one end of the top of the two connecting frames (408), an electric push rod (410) is installed in the middle of the top of the upper movable seat (406), one end of the electric push rod (410) is fixedly connected to a movable block (411), a fixed vertical block (412) is installed in the middle of the top of the movable block (411), and a detection mirror (413) is installed in the middle of one end of the fixed vertical block (412); A guide plate (414) is installed at one end of the top of the auxiliary frame (401), a mounting frame (415) is installed on one side of the top of the frame (1), a driving motor (416) is installed at one end of the top of the mounting frame (415), rotating shafts (417) are symmetrically installed at both ends of the top of the mounting frame (415), a conveyor belt (418) is sleeved on the surface of the rotating shaft (417), a side baffle (419) is installed at a position corresponding to the guide plate (414) on the top of the mounting frame (415), and a positioning baffle (420) is installed at one end of the top of the mounting frame (415) close to the driving motor (416).

2. The method for producing a multi-layer steel skeleton composite pipe according to claim 1, characterized in that: A driving motor is installed inside the driving seat (308); the bottom end of the moving wheel (309) is flush with the bottom end of the front supporting circular magnetic block (306); and the moving wheel (309) is in close contact with the inner wall of the composite tube (2); The positions of the fixed magnetic block (310) and the regulating electromagnetic block (311) correspond to each other, and the cutting tool (314) is located above the composite pipe (2).

3. The method for producing a multi-layer steel skeleton composite pipe according to claim 1, characterized in that: Limit blocks are symmetrically mounted at both ends of the driving seat (308); limit grooves are symmetrically provided on the inner walls of both sides of the pushing frame (317); the limit grooves correspond to the positions of the limit blocks; and the laser rangefinder (318) and the total reflection prism (320) are located on the same vertical plane.

4. The method for producing a multi-layer steel skeleton composite pipe according to claim 1, characterized in that: A bracket (321) is fixedly installed on one side of the frame (1), and fixed blocks (322) are symmetrically fixedly installed at both ends of the top of the bracket (321), and movable rods (323) are installed through the middle of the two fixed blocks (322), and buffer springs (324) are sleeved in the middle of the two movable rods (323), and an extrusion plate (325) is fixedly connected between the ends of the two movable rods (323), and an arc-shaped bonding plate (326) is fixedly connected to one end of the extrusion plate (325), and a contact button (327) is fixedly installed at one end of the middle of the extrusion plate (325) close to the arc-shaped bonding plate (326); A positioning cylinder (328) is equidistantly mounted on one end edge of the front supporting circular magnetic block (306) along the circumferential direction, an extrusion cylinder (329) is movably mounted between the ends of the positioning cylinder (328), and a pressure sensor (330) is equidistantly mounted on the ends of the front supporting circular magnetic block (306) along the circumferential direction.

5. The method for producing a multi-layer steel skeleton composite pipe according to claim 4, characterized in that: The diameter of the arc-shaped bonding plate (326) is smaller than the diameter of the surface wall of the composite tube (2), and the diameter of the arc-shaped bonding plate (326) is larger than the diameter of the inner wall of the composite tube (2); The positioning cylinders (328) and the pressure sensors (330) are arranged in a staggered manner on the edges of the front supporting circular magnetic block (306); the inner surface of the extruding circular block (329) fits the end of the pressure sensor (330); and the diameter of the extruding circular block (329) is the same as that of the front supporting circular magnetic block (306).

6. The method for producing a multi-layer steel skeleton composite pipe according to claim 5, characterized in that: The top of the mounting seat (402) is symmetrically provided with a slide groove, the bottom end of the lower movable seat (403) is symmetrically connected with a slide block, the slide block is movably engaged in the slide groove, the end of the hydraulic push rod (404) is connected to one end of the lower movable seat (403), the bottom of the upper movable seat (406) is movably embedded in the guide groove (405), the end of the electric adjustment rod (407) is connected to the bottom of the upper movable seat (406), the height of the middle part of the arc-shaped electromagnetic block (409) is the same as the height of the middle part of the composite pipe (2), and the detection mirror (413) and the total reflection prism (320) are located at the same horizontal plane height.

7. The method for producing a multi-layer steel skeleton composite pipe according to claim 5, characterized in that: The surface of the middle portion of the guide plate (414) is located at the same horizontal plane height as the bottom end of the inner wall of the composite tube (2); one end of the guide plate (414) is flush with the end of the composite tube (2); the other end of the guide plate (414) is in contact with the surface of the conveyor belt (418); the surface of the conveyor belt (418) is flush with the surface of the guide plate (414); and the output shaft of the drive motor (416) is connected to the end of a rotating shaft (417).

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