Cage type sliding body shaping thin-wall spiral welded pipe machining equipment

Abstract

The invention provides cage type sliding body shaping thin-wall spiral welded pipe machining equipment, and belongs to the technical field of pipe machining, the cage type sliding body shaping rotary unit is of a cage type structure, the two ends of the cage type sliding body shaping rotary unit are provided with an inlet and an outlet respectively, and a steel belt is spirally wound; the cage type sliding body shaping rotating unit is in sliding butt joint with the outer walls of the steel belts in the direction parallel to the axial direction of the pipe body, resistance which faces the inlet direction and prevents the steel belts from moving towards the outlet direction is formed, and then welding seams between the steel belts are reduced; in the radial plane of the pipe body, the cage type sliding body shaping rotating unit is in rolling butt joint with the outer wall of the steel belt so as to provide rotating support for the steel belt; and the welding unit penetrates through the cage type sliding body shaping and rotating unit and is suitable for welding the welding seams between the wound steel strips. According to the cage type sliding body shaping thin-wall spiral welded pipe machining equipment, a welded joint can be controlled, the welding quality is improved, abrasion to a pipe body is reduced, and continuous production is achieved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of pipe processing, and more particularly relates to a cage sliding body shaping thin-wall spiral welded pipe processing equipment. BACKGROUND

[0002] The thin-wall spiral welded pipe is a kind of pipe material formed by continuously winding and welding steel strips with or without holes. In the existing processing technology, the steel strip is unwound by the unwinding equipment and then guided to the rotary welding equipment, where it is wound in a spiral manner and continuously welded into a tubular structure by argon arc welding. However, this process has the following significant defects: 1) poor weld width control: during the dynamic winding and welding process, the gap between the edges of adjacent steel strips is difficult to maintain uniform and stable, often resulting in a wide or fluctuating gap, which leads to insufficient welding fusion, reduced weld strength, and the generation of defects such as porosity and incomplete penetration, severely affecting the sealing and mechanical properties of the pipe body; 2) severe pipe body outer wall wear: the outer surface of the pipe body continuously comes into rigid contact and friction with the inner wall of the rotary welding equipment during the rotary welding process, which easily causes scratches, coating damage, or structural deformation on the pipe body surface, affecting not only the appearance quality but also the corrosion resistance and service life.

[0003] Therefore, there is an urgent need to design a new cage sliding body shaping thin-wall spiral welded pipe processing equipment to achieve precise regulation of the gap between steel strips during the forming process, improve the weld quality, and reduce the wear on the outer wall of the pipe body, thereby ensuring the continuous and high-quality production of thin-wall spiral welded pipes. SUMMARY

[0004] The present application aims to provide a cage sliding body shaping thin-wall spiral welded pipe processing equipment to solve the technical problems of existing cage sliding body shaping thin-wall spiral welded pipe processing equipment, which is difficult to control the weld width during pipe processing, leading to unstable welding quality, and severe wear on the outer wall of the pipe body.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a cage sliding body shaping thin-wall spiral welded pipe processing equipment, comprising: The cage sliding body shaping rotary unit is of a cage structure and has an inlet for steel strip input and an outlet for pipe body output after steel strip welding at opposite ends, respectively, forming a channel for steel strip spiral winding between the inlet and the outlet; sliding abutment between the cage sliding body shaping rotary unit and the outer wall of the steel strip in the direction parallel to the axial direction of the pipe body forms a resistance to the movement of the steel strip towards the outlet direction, thereby reducing the welding seam between the steel strips; rolling abutment between the cage sliding body shaping rotary unit and the outer wall of the steel strip in the radial plane of the pipe body provides rotational support for the steel strip; A welding unit is arranged through the cage sliding body shaping rotary unit, and is suitable for welding the welding seam between the steel strips in the winding.

[0006] In a possible implementation, the cage sliding body shaping rotary unit comprises: A cage frame, the inlet and the outlet are respectively arranged at two ends of the cage frame along the length direction of the cage frame, a plurality of support plates with through holes in the middle are uniformly distributed along the length direction of the cage frame, and the through holes of the plurality of support plates are combined to form the channel; A plurality of support bodies are respectively arranged between two adjacent support plates, the plurality of support bodies are arranged in a circular shape around the outer periphery of the pipe body, the two ends of the support body are respectively connected to two adjacent support plates, and the support body is axially parallel to the length direction of the cage frame; A plurality of rotating bodies are respectively connected to the plurality of support bodies and arranged coaxially with the support bodies, the rotating body has a rotational freedom around the axial direction, the outer peripheral wall of the rotating body is used for rolling against the outer wall of the steel strip or the pipe body, and the axial direction of the rotating body is used for providing resistance to the movement of the steel strip in the outlet direction, and the axial direction of the rotating body is perpendicular to the radial direction of the pipe body.

[0007] In a possible implementation, at least one rotating body is arranged on one support body, and the plurality of rotating bodies on the plurality of support bodies are arranged in a spiral shape and consistent with the spiral winding direction of the pipe body.

[0008] In a possible implementation, the lower end of the support plate near the inlet has an opening, the steel strip is input into the channel from the opening and wound in a spiral shape, and a pressing assembly is arranged at the opening, which is used to press the steel strip and make the outer wall of the steel strip adhere to the rotating body.

[0009] In a possible implementation, a limiting block is connected to the support plate near the inlet along the input path of the steel strip, the limiting block is suitable for sliding against the side wall of the steel strip to guide the steel strip into the channel and correct the spiral winding direction of the steel strip, and the connection position of the limiting block on the support plate can be adjusted.

[0010] In a possible implementation, the welding unit comprises: A welding machine is connected to the cage sliding body shaping rotary unit, has a welding head passing through the upper end of the cage sliding body shaping rotary unit, and is used for welding the welding seam between the steel strips; An encoder is connected to the cage sliding body shaping rotary unit and rolls against the outer wall of the steel strip, the encoder is used for synchronous rotation with the steel strip and real-time acquisition of the position information of the welding seam of the steel strip; A control box is connected to the cage body shaping rotary unit, the control box is electrically connected to the welding machine and the encoder respectively, and the control box is used for receiving the position information output by the encoder and controlling the welding machine to operate.

[0011] In a possible implementation, the cage body shaping thin-walled spiral welded pipe processing equipment further comprises: A conveying unit is arranged near the inlet of the cage body shaping rotary unit, the steel strip passes through the conveying unit, the conveying unit is used for pushing the steel strip to move spirally in the cage body shaping rotary unit, and the included angle between the direction in which the steel strip enters the inlet and the length direction of the cage body shaping rotary unit can be adjusted.

[0012] In a possible implementation, the conveying unit comprises: A frame body; A rotating platform, one end of which is rotatably connected to the upper end of the frame body, and the other end of which has a plane rotating degree of freedom on the upper end of the frame body; A roller assembly connected to the upper end of the rotating platform, the roller assembly being used for clamping the steel strip and pushing the steel strip to move into the inlet; A pushing mechanism, one end of which is connected to the upper end of the frame body and the other end of which is connected to the other end of the rotating platform, the pushing mechanism being used for pushing the rotating platform to rotate, so as to adjust the included angle between the direction of the steel strip output by the roller assembly and the length direction of the cage body shaping rotary unit.

[0013] In a possible implementation, the roller assembly comprises: A box body; A plurality of upper pressing rollers rotatably connected to the inside of the box body in a row; A plurality of lower pressing rollers rotatably connected to the inside of the box body in a row, the lower pressing rollers being located below the upper pressing rollers and forming a space for the steel strip to pass through between the upper pressing rollers and the lower pressing rollers, and the height of the upper pressing rollers being adjustable; A plurality of driving rollers arranged in a row in the inside of the box body, the driving rollers being located below the lower pressing rollers, the driving rollers being power transmission connected to the lower pressing rollers and being used for driving the lower pressing rollers to rotate; the lower pressing rollers and the upper pressing rollers forming a clamping force for clamping the steel strip and pushing the steel strip to move through the rotation of the lower pressing rollers; A driver located outside the box body, having a power output end passing through the box body and being power transmission connected to the driving rollers, and the driver being adapted to drive the driving rollers to rotate.

[0014] In a possible implementation, an output end of the conveyor set is connected with a large pressing roller, the large pressing roller is used for pressing down the steel belt output from the conveyor set and inputting the steel belt into the inlet; a guide rod is arranged on the side of the large pressing roller, a length direction of the guide rod is along a length direction of the steel belt, and the guide rod is used for slidingly abutting against a side wall of the steel belt to adjust a direction of the steel belt input into the inlet.

[0015] The cage sliding body shaping thin-wall spiral welded pipe processing equipment provided by the present application has the advantages that, compared with the prior art, the cage sliding body shaping thin-wall spiral welded pipe processing equipment combines a cage sliding body shaping rotating set and a welding set, can realize spiral winding of a steel belt and welding of a welding seam, has high quality of a formed pipe body, and is beneficial to continuous and high-quality production.

[0016] The cage sliding body shaping rotating set is arranged in a cage structure, which can improve the structural stability, the steel belt is kept in stable spiral rotation in the cage, and sliding abutment between the cage sliding body shaping rotating set and the steel belt can reduce the width of the welding seam, further reduce the welding seam between the steel belts, and is beneficial to improving the welding quality.

[0017] Rolling abutment between the cage sliding body shaping rotating set and the outer wall of the steel belt can provide rotating support for the steel belt, reduce the wear degree between the cage sliding body shaping rotating set and the pipe body, and improve the appearance quality of the pipe body and the product quality. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 The overall structure schematic diagram of the cage sliding body shaping thin-wall spiral welded pipe processing equipment provided by the present application is shown in the figure. Figure 2 The structure schematic diagram of the cage sliding body shaping thin-wall spiral welded pipe processing equipment provided by the present application is shown in the figure. Figure 3 The conveyor set structure schematic diagram of the cage sliding body shaping thin-wall spiral welded pipe processing equipment provided by the present application is shown in the figure. Figure 4 The support body and rotating body layout form schematic diagram of the cage sliding body shaping thin-wall spiral welded pipe processing equipment provided by the present application is shown in the figure. Figure 5 The cage sliding body shaping thin-wall spiral welded pipe processing equipment provided by the present application has the advantages that, compared with the prior art, the cage sliding body shaping thin-wall spiral welded pipe processing equipment combines a cage sliding body shaping rotating set and a welding set, can realize spiral winding of a steel belt and welding of a welding seam, has high quality of a formed pipe body, and is beneficial to continuous and high-quality production. Figure 4The diagram shows the layout of the support body, rotating body, and welding machine (the arrows in the diagram indicate the direction of steel strip movement, f1 represents the supporting force generated on the steel strip when the rotating body rolls against the steel strip, and f2 represents the resistance generated on the steel strip when the rotating body slides against the steel strip).

[0020] Explanation of reference numerals in the attached figures: 100. Cage-type sliding body shaping and rotating unit; 110. Inlet; 120. Outlet; 130. Channel; 140. Cage frame; 141. Support plate; 142. Crossbeam; 143. Notch; 150. Support body; 160. Rotating body; 170. Downward pressing assembly; 180. Limit block; 200. Welding unit; 210. Welding machine; 220. Encoder; 230. Control box; 300. Steel strip; 310. Welded seam; 400. Conveyor unit; 410. Frame; 420. Rotating platform; 430. Roller assembly; 431. Box; 432. Upper pressure roller; 433. Lower pressure roller; 434. Drive roller; 435. Driver; 440. Pushing mechanism; 450. Large pressure roller; 460. Guide rod; 470. Pressure bar. Detailed Implementation

[0021] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0022] Please refer to the following: Figures 1 to 5 The present invention will now describe the cage-type sliding body shaping thin-walled spiral welded pipe processing equipment. The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment includes a cage-type sliding body shaping rotary unit 100 and a welding unit 200. The cage-type sliding body shaping rotary unit 100 has a cage-type structure and has an inlet 110 for inputting steel strip 300 and an outlet 120 for outputting the pipe body formed after welding the steel strip 300 at opposite ends. A channel 130 is formed between the inlet 110 and the outlet 120 for feeding the steel strip 300 into a spiral shape. The cage-type sliding body shaping rotary unit 100 is positioned parallel to the pipe body axial direction. The 00 slides against the outer wall of the steel strip 300 and forms a resistance in the direction of inlet 110 that hinders the movement of the steel strip 300 towards outlet 120, thereby reducing the weld seam 310 between the steel strips 300; the cage-type sliding body shaping and rotating unit 100 rolls against the outer wall of the steel strip 300 in the radial plane of the tube body to provide rotational support for the steel strip 300; the welding unit 200 is set through the cage-type sliding body shaping and rotating unit 100 and is suitable for welding the weld seam 310 between the wound steel strips 300.

[0023] Compared with the prior art, the cage-type sliding body shaping thin-walled spiral welded pipe processing equipment provided by the present invention, through the combination of cage-type sliding body shaping rotary unit 100 and welding unit 200, can realize the spiral winding of steel strip 300 and welding of weld seam 310, resulting in higher quality pipe body after forming, which is conducive to realizing continuous production.

[0024] In this invention, the thickness of the steel strip 300 is preferably between 0.5-5 mm, but it is not limited to this thickness; that is, spiral welding can also be performed on steel strips 300 of other thicknesses. The processing equipment in this invention can perform spiral winding and welding on the steel strip 300, regardless of whether it has holes (perforated steel strip 300 if holes are present) or not (ordinary steel strip 300), and regardless of the width of the steel strip, to produce tubular products; all such products are within the scope of protection of this invention.

[0025] Setting the cage-type sliding body shaping and rotating unit 100 in a cage-type structure can improve its structural stability. The steel strip 300 maintains stable spiral rotation inside it. The sliding contact between the cage-type sliding body shaping and rotating unit 100 and the steel strip 300 can reduce the width of the weld seam 310, further reducing the weld seam 310 between the steel strips 300, which is beneficial to improving the welding quality.

[0026] The rolling contact between the cage-type sliding body shaping and rotating unit 100 and the outer wall of the steel belt 300 provides rotational support for the steel belt 300, reduces the wear between the cage-type sliding body shaping and rotating unit 100 and the tube body, and improves the appearance quality of the tube body and the product quality.

[0027] In this embodiment, the welding unit 200 is located at the upper end of the cage-type sliding body shaping and rotating unit 100. It can weld the weld seam 310 of the steel strip 300 during the spiral winding process. After welding, the tube body is formed. The welding quality is high and the overall structural strength of the tube body is improved.

[0028] In some embodiments, please refer to Figures 1-2 , Figures 4-5The cage-type sliding body shaping and rotating unit 100 includes a cage frame 140, multiple support bodies 150, and multiple rotating bodies 160. An inlet 110 and an outlet 120 are respectively located at both ends of the cage frame 140 along its length. Multiple support plates 141 with through holes in their centers are evenly distributed along the length of the cage frame 140, and the through holes of the multiple support plates 141 combine to form a channel 130. Multiple support bodies 150 are respectively located between two adjacent support plates 141, and the multiple support bodies 150 are arranged in a circular pattern around the outer circumference of the tube body. Two adjacent support plates 141 are connected to each end of the support body 150. The axial direction of the support body 150 is parallel to the length direction of the cage frame 140. Multiple rotating bodies 160 are respectively connected to multiple support bodies 150 and are coaxially arranged with the support bodies 150. The rotating body 160 has a degree of freedom of rotation about its axial direction. The outer circumference of the rotating body 160 is used to roll against the outer wall of the steel strip 300 or the outer wall of the tube. The axial direction of the rotating body 160 is used to provide resistance to prevent the steel strip 300 from moving towards the outlet 120. The axial direction of the rotating body 160 is perpendicular to the radial direction of the tube.

[0029] In this embodiment, the cage frame 140 includes multiple support plates 141 and multiple crossbeams 142. The multiple support plates 141 are arranged sequentially along the length direction, and the crossbeams 142 are used to fix the multiple support plates 141. They are respectively set at the side and top positions of the support plates 141, so that the multiple support plates 141 are combined to form a whole, which can improve the structural stability. The welding unit 200 is set on the upper end of the crossbeam 142 and can be fixed on the crossbeam 142. It can perform welding operations on the weld seam 310 of the steel strip 300 through two adjacent support plates 141.

[0030] In this embodiment, the support body 150 is a cylindrical rod with both ends fixed to two adjacent support plates 141, and the support body 150 does not contact the steel strip 300.

[0031] The rotating body 160 can specifically adopt a bearing structure, with its outer ring rotating around the inner ring. The inner ring is fixedly connected to the support body 150, and the outer circumferential wall of the outer ring is used to contact the steel strip 300 or the tube body. When the steel strip 300 moves from the inlet 110 to the outlet 120, the outer ring of the rotating body 160 will tend to rotate due to the friction force of the steel strip 300. Since the steel strip 300 moves along its axial direction, and the outer circumferential surface of the bearing forms a sliding contact with the steel strip 300 in the axial direction and a rolling contact in the radial direction, it can form an effective axial resistance to the steel strip 300, ensuring that the steel strip 300 can be stably shaped within the channel 130, reducing the weld seam 310, and avoiding insufficient shaping due to excessively fast movement, resulting in an excessively large weld seam 310 and poor welding quality.

[0032] The number of supports 150 between adjacent support plates 141 can be adapted to the pipe diameter, typically 12-30. Each support 150 is evenly distributed radially in a ring around the axis of channel 130 to ensure uniform support force on the steel strip 300 or the outer periphery of the pipe, preventing eccentric deformation during the shaping process. The support plates 141 are made of high-strength alloy material.

[0033] The cage frame 140 is arranged in a rectangular shape, and its length is designed according to the shaping requirements of the tube body, generally 2-3 meters, to ensure that the steel strip 300 can form a tubular structure that meets the requirements after passing through the cage sliding body shaping and rotating unit 100.

[0034] like Figures 4-5 In the diagram, f1 represents the supporting force generated on the steel strip 300 when the rotating body 160 rolls against the steel strip 300, and f2 represents the resistance generated on the steel strip 300 when the rotating body 160 slides against the steel strip 300. This resistance is the frictional resistance generated by the mutual friction between the two. This resistance can hinder the smooth movement of the steel strip 300 towards the outlet 120, thereby enabling the steel strip 300 to maintain sufficient tightness during the spiral winding process. The close contact between the side walls of the steel strip 300 is beneficial for subsequent welding operations and effectively improves the welding quality.

[0035] Specifically, a wear-resistant layer that increases the friction between the rotating body 160 and the steel strip 300 can be provided on the surface of the rotating body 160. However, this wear-resistant layer will not cause serious wear to the outer wall of the steel strip 300, thus ensuring the appearance quality of the tube.

[0036] In some embodiments, please refer to Figures 1-2 , Figures 4-5 At least one rotating body 160 is rotatably mounted on each support body 150, and multiple rotating bodies 160 on multiple supports 150 are arranged in a spiral shape, consistent with the spiral winding direction of the tube. Since the distance between two adjacent support plates 141 is different, the length of the support body 150 is different. The number of rotating bodies 160 can be reasonably set on the support body 150 according to its length; at least one can be set, or multiple can be set at time intervals. During installation, it must be ensured that they are arranged in a spiral shape.

[0037] The spiral arrangement in this embodiment allows the steel strip 300 to move along the spiral trajectory formed by multiple rotating bodies 160 after entering the cage-type sliding body shaping and rotating unit 100, thereby being gradually guided and wound into a tubular shape with a specific spiral angle. The positions and angles between adjacent rotating bodies 160 are precisely calculated and adjusted to ensure that the steel strip 300 is subjected to uniform force during the winding process, avoiding deformation or damage to the steel strip due to excessive local force.

[0038] Meanwhile, this spiral arrangement structure can continuously apply a radial constraint force pointing towards the core of the tube to the steel strip 300. Together with the friction between the rotating body 160 and the steel strip 300, they work together to ensure that the steel strip 300 maintains a stable posture and a predetermined spiral angle during the winding process, laying a solid structural foundation for the subsequent tight bonding and welding processes.

[0039] In some embodiments, please refer to Figures 1 to 2 The support plate 141 near the inlet 110 has a notch 143 at one of its lower corners. The steel strip 300 is fed into the channel 130 through the notch 143 and wound in a spiral shape. A pressing component 170 is provided at the notch 143 to press down the steel strip 300 and make its outer wall adhere to the rotating body 160. In this embodiment, the notch 143 allows the steel strip 300 to smoothly enter the channel 130 and be wound in a spiral shape, which is beneficial for subsequent welding operations.

[0040] The pressing assembly 170 includes a fixed frame mounted on the support plate 141. A pressure roller is rotatably connected to the fixed frame. The axis of the pressure roller is perpendicular to the surface of the support plate 141. The pressure roller contacts the upper surface of the steel strip 300, thereby providing downward pressure to the steel strip 300, effectively preventing the steel strip 300 from warping or other phenomena, keeping the steel strip 300 on its moving trajectory, and thus enabling it to be wound into a spiral shape.

[0041] In this embodiment, the pressure roller applies a vertically downward force to the steel strip 300 passing through the notch 143, forcing the lower surface of the steel strip 300 to tightly adhere to the circumferential surface of the rotating body 160 located below it. The height of the pressure roller can be adaptively adjusted according to the thickness of the steel strip 300 to ensure that appropriate downward pressure is provided for steel strips 300 of different specifications. Simultaneously, the pressure roller is made of wear-resistant rubber, ensuring sufficient friction to drive the steel strip 300 forward stably while avoiding scratches or indentations on the surface of the steel strip 300, effectively protecting the original structure and performance of the steel strip 300.

[0042] In some embodiments, please refer to Figures 1 to 2 A limiting block 180 is connected to the support plate 141 near the inlet 110 along the input path of the steel strip 300. The limiting block 180 is adapted to slide against the side wall of the steel strip 300 to guide the steel strip 300 into the channel 130 and correct the spiral winding direction of the steel strip 300. The connection position of the limiting block 180 on the support plate 141 is adjustable. In this embodiment, the limiting block 180 is set at a position diagonally above the inlet 110. First, it can guide the steel strip 300 into the channel 130. Second, it can keep the steel strip 300 moving along a preset path or trajectory. Third, it can ensure that the weld seam 310 of the steel strip 300 is reduced during the winding process.

[0043] Specifically, the limiting block 180 can be detachably and positionally adjustablely connected to the support plate 141 via a slider structure. The limiting block 180 is located on the left side of the steel belt 300, thus serving as a limiting device to prevent the steel belt 300 from moving to the left and allowing the steel belt 300 to smoothly enter the channel 130.

[0044] The position of the limiting block 180 connected to the support plate 141 is adjustable. This design allows the limiting block 180 to be flexibly positioned according to steel strips 300 of different widths, ensuring that its sidewall always maintains reliable contact with the limiting block 180. When the steel strip 300 shows a lateral deviation trend during input due to material stress or conveying deviation, the limiting block 180 will generate a continuous lateral guiding force on its sidewall, forcing the steel strip 300 to smoothly enter the channel 130 along the preset trajectory. This effectively avoids problems such as spiral winding angle deviation, uneven pipe diameter, or even pipe winding failure caused by steel strip deviation, further improving the accuracy and stability of pipe winding processing.

[0045] In some embodiments, please refer to Figures 1 to 2 The welding unit 200 includes a welding machine 210, an encoder 220, and a control box 230. The welding machine 210 is connected to the cage-type sliding body shaping and rotating unit 100 and has a welding head that passes through the upper end of the cage-type sliding body shaping and rotating unit 100 and is used to weld the weld seam 310 between the steel strips 300. The encoder 220 is connected to the cage-type sliding body shaping and rotating unit 100 and rolls against the outer wall of the steel strip 300. The encoder 220 is used to rotate synchronously with the steel strip 300 and collect the position information of the weld seam 310 of the steel strip 300 in real time. The control box 230 is connected to the cage-type sliding body shaping and rotating unit 100 and is electrically connected to the welding machine 210 and the encoder 220 respectively. The control box 230 is used to receive the position information output by the encoder 220 and control the operation of the welding machine 210. In this embodiment, the welding machine 210 uses existing technology, with a welding head at its lower end, enabling it to weld the weld seam 310 of the steel strip 300, thus forming a tube body after welding. The encoder 220 can also employ existing technology, enabling it to collect position information of the weld seam 310 of the steel strip 300, thereby sending a signal to the control box 230. The control box 230 then instructs the welding machine 210 to perform the welding operation based on this signal, thus achieving automated continuous production of the tube body.

[0046] In this embodiment, the lower end of the welding machine 210 passes through two adjacent support plates 141 and two adjacent rotating bodies 160, without affecting the normal use of the rotating bodies 160. The control box 230 in this embodiment contains a PLC controller, processor, control circuit, control knob, and display screen, etc., and can preset welding parameters, etc., and can adopt a control box 230 from the prior art.

[0047] In actual operation, when the steel strip 300 moves and rotates under the action of the cage-type sliding body shaping and rotating unit 100, the rollers of the encoder 220 are closely attached to the outer wall of the steel strip 300 and rotate synchronously with it. As the steel strip 300 continues to move, the encoder 220 can accurately record the displacement and rotation angle of the steel strip 300, and then convert these mechanical movements into electrical signals for the position information of the weld seam 310 through internal sensing elements. This real-time acquired position information is continuously transmitted to the control box 230. The processor inside the control box 230 quickly analyzes and calculates the received position information to determine whether the weld seam 310 of the steel strip 300 has reached the preset welding position. Once the control box 230 determines that the weld seam 310 is in a suitable welding position, such as directly below the welding head, it immediately sends a start command to the welding machine 210. After receiving the command from the control box 230, the welding machine 210's welding head moves quickly to perform precise welding on the weld seam 310 between the steel strips 300. After welding is completed, the control box 230 will determine the arrival of the next weld seam 310 based on the position information subsequently transmitted by the encoder 220, and control the welding machine 210 to perform the next welding operation. This cycle is repeated to ensure that the welding process of the entire pipe can be carried out continuously, stably and automatically, which effectively improves the production efficiency of the pipe and the consistency of welding quality.

[0048] In this application, the encoder 220 serves as the core position detection component. Its primary function is to acquire, in real-time and accurately, the spatial position information of the spiral weld seam 310 of the steel strip 300, providing a dynamic positioning reference for the welding machine 210. This ensures that the welding torch of the welding machine 210 is always precisely aligned with the spiral weld seam, solving technical problems in traditional spiral welding such as difficulty in tracking the weld seam trajectory, lag in manual adjustment, and large welding deviations. The specific functions of the encoder 220 are explained in detail below in conjunction with the overall workflow of the device.

[0049] First, the synchronous follow-up and basic position information acquisition function: the encoder 220 is installed on the upper end of the steel belt 300 and forms rolling contact with the steel belt 300 to ensure that the encoder 220 rotates synchronously with the steel belt 300, realizing the linkage mechanism of "pipe rotation - encoder 220 synchronous detection". Its core acquisition functions include circumferential position detection, axial position association acquisition and high-frequency real-time acquisition.

[0050] Secondly, the position signal transmission and data interaction functions: the encoder 220 establishes a communication link with the control box 230 through an electrical connection. Its signal transmission function is specifically manifested as: signal format adaptation, zero-delay data upload, and abnormal signal feedback.

[0051] Thirdly, the precise guidance and collaborative control function of welding trajectory: the position information collected by encoder 220 is the core basis for control box 230 to regulate welding machine 210. Its guidance and control function is realized through the following collaborative process: trajectory prediction and instruction generation, dynamic trajectory correction and multi-dimensional collaborative adaptation.

[0052] The core value of the encoder 220 in this application lies in converting the dynamic position information of the spiral weld seam of the pipe body into a quantifiable and transmittable digital signal, establishing a closed-loop control link of "pipe body movement - position detection - welding machine 210 control". Through its functions of synchronous acquisition, signal transmission, trajectory guidance, and auxiliary monitoring, it completely solves the problems of traditional spiral welding that rely on manual observation, have low positioning accuracy, and unstable welding quality. It controls the welding deviation of the spiral weld seam within ±0.1mm, improves welding efficiency by more than 30%, and reduces the intensity of manual operation, providing key technical support for the automation and precision of spiral welding of pipe bodies.

[0053] In some embodiments, please refer to Figure 1 and Figure 3 The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment also includes a conveyor unit 400. The conveyor unit 400 is located near the inlet 110 of the cage-type sliding body shaping rotary unit 100. The steel belt 300 passes through the conveyor unit 400. The conveyor unit 400 is used to push the steel belt 300 into the cage-type sliding body shaping rotary unit 100 in a spiral motion. The angle between the direction of the steel belt 300 entering the inlet 110 and the length direction of the cage-type sliding body shaping rotary unit 100 can be adjusted.

[0054] To adjust the angle between the input direction of the steel strip 300 and the length direction of the cage-type sliding shaping rotary mill 100, the overall installation angle of the conveyor unit 400 can be adjusted, thereby changing the input angle of the steel strip 300. After adjustment, the position of the conveying mechanism is fixed to ensure the stability of the conveying angle. By adjusting this angle, the initial helical angle of the steel strip 300 when it enters the cage-type sliding shaping rotary mill 100 can be precisely controlled. This, combined with the rotational speed and traction speed of the cage-type sliding shaping rotary mill 100, enables precise control of the spiral winding pitch of the tube, meeting the processing requirements of tubes with different diameters and pitches.

[0055] During the winding process of the steel strip 300, the conveyor unit 400 provides both rotational and forward power. A cutting machine is located in front of the tube in the conveying direction, and a traction machine is located in front of the cutting machine. The traction machine is used to pull the cut tube along its axial direction. Before cutting, the conveyor unit 400 provides the power for movement.

[0056] In some embodiments, please refer to Figure 1 and Figure 3The conveyor unit 400 includes a frame 410, a rotating platform 420, a roller assembly 430, and a pushing mechanism 440. One end of the rotating platform 420 is rotatably connected to the upper end of the frame 410, and the other end has a degree of freedom to rotate on the plane of the upper end of the frame 410. The roller assembly 430 is connected to the upper end of the rotating platform 420 and is used to clamp the steel belt 300 and push the steel belt 300 into the inlet 110. One end of the pushing mechanism 440 is connected to the upper end of the frame 410, and the other end is connected to the other end of the rotating platform 420. The pushing mechanism 440 is used to push the rotating platform 420 to rotate, thereby adjusting the angle between the direction of the steel belt 300 output by the roller assembly 430 and the length direction of the cage-type sliding body shaping and rotating unit 100.

[0057] By activating the pushing mechanism 440, the rotating platform 420 rotates, and the roller assembly 430 rotates synchronously, thus adjusting the angle or direction at which the steel strip 300 is fed into the opening. The frame 410 provides effective support for the rotating platform 420, and the roller assembly 430 clamps the steel strip 300 and feeds it into the inlet 110. The roller assembly 430 provides the power for the forward movement of the steel strip 300.

[0058] The rotating platform 420 is rectangular or square in shape. One end (the end closer to the opening) is rotatably connected to the upper end of the frame 410, while the other end (the end farther from the opening) can be rotated around the rotating connection by the pushing mechanism 440, thereby adjusting the rotation angle of the roller assembly 430.

[0059] The frame 410 serves as the basic support component for the conveyor unit 400. Its lower end can be fixed to the installation ground using anchor bolts or other means to ensure the stability of the overall structure. The rotating platform 420 is rotatably connected to the upper end of the frame 410 by setting a rotating shaft and bearings, thereby enabling the rotating platform 420 to rotate flexibly around the rotating shaft.

[0060] The steel belt 300 passes through the inside of the roller assembly 430, which can provide clamping force to the steel belt 300 and convey the steel belt 300.

[0061] The pushing mechanism 440 can be a piston rod or a screw structure. When using a piston rod, one end of the piston rod is connected to the upper end of the frame 410, and the other end is connected to the rotating platform 420. By extending and retracting the piston rod, the rotating platform 420 can be pushed or pulled, thus adjusting the angle of the rotating platform 420. When using a screw structure, a screw handle is provided at the upper end of the frame 410. The screw handle is threadedly connected to the screw, and the screw can be driven to rotate by rotating the screw handle. A threaded sleeve is threaded onto the screw, and the threaded sleeve and the screw are screwed together. When the screw rotates, the threaded sleeve moves axially, and the threaded sleeve is connected (e.g., rotatably connected) to the end of the rotating platform 420, thereby enabling the threaded sleeve and the rotating platform 420 to rotate together, realizing the rotation of the rotating platform 420. In this embodiment, as shown... Figure 3 As shown, a screw structure is used.

[0062] When the piston rod of the pushing mechanism 440 extends or retracts, it pushes the rotating platform 420 to rotate around its rotational connection point with the frame 410, thereby changing the orientation of the roller assembly 430. This adjusts the angle between the direction of the steel strip 300 output from the roller assembly 430 and the length direction of the cage-type sliding shaping rotary unit 100. By controlling the extension and retraction of the pushing mechanism 440, this angle can be precisely adjusted to meet the processing requirements of different spiral winding angles.

[0063] In some embodiments, please refer to Figure 1 and Figure 3 The roller assembly 430 includes a housing 431, an upper pressure roller 432, a lower pressure roller 433, a drive roller 434, and a driver 435. The housing 431 is hollow and can be divided into upper and lower parts. Multiple upper pressure rollers 432 are arranged in a row and rotatably connected to the interior of the housing 431. Multiple lower pressure rollers 433 are also arranged in a row and rotatably connected to the interior of the housing 431. The lower pressure rollers 433 are located below the upper pressure rollers 432 and form a space between them for the steel strip 300 to pass through. The height of the upper pressure rollers 432 is adjustable. Multiple drive rollers 434 are... The drive roller 434 is arranged in a row inside the housing 431. The drive roller 434 is located below the lower pressure roller 433. The drive roller 434 is connected to the lower pressure roller 433 by power transmission and is used to drive the lower pressure roller 433 to rotate. The lower pressure roller 433 and the upper pressure roller 432 form a clamping force to clamp the steel strip 300 and push the steel strip 300 to move by rotating the lower pressure roller 433. The driver 435 is located outside the housing 431 and has a power output end that passes through the housing 431 and is connected to the drive roller 434 by power transmission. The driver 435 is adapted to drive the drive roller 434 to rotate.

[0064] Specifically, the housing 431 can be made of steel plate by welding or casting to ensure the rigidity and stability of its overall structure and prevent the components from shifting or being damaged due to vibration or other factors during long-term operation.

[0065] The number of upper pressure rollers 432 can be set according to the actual width of the steel strip 300, for example, 3-5 rollers. The centerlines of each upper pressure roller 432 are parallel to each other and evenly distributed in the same plane to ensure uniform pressure is applied to the steel strip 300. The rotational connection between the upper pressure rollers 432 and the inside of the housing 431 can be achieved through bearings. For example, bearing seats are set at corresponding positions on the side walls of the housing 431, and the two ends of the upper pressure rollers 432 are respectively installed in the bearing seats through bearings, thereby ensuring the flexibility of rotation of the upper pressure rollers 432.

[0066] To adjust the height of the upper pressure roller 432, an adjustment mechanism (existing technology, capable of adjusting the height of the upper pressure roller 432) can be installed between the bearing housing and the top of the housing 431. This adjustment mechanism can be a screw-nut mechanism, where rotating the adjusting nut moves the screw up and down, thereby raising and lowering the bearing housing and the upper pressure roller 432 as a whole, changing the distance between the upper pressure roller 432 and the lower pressure roller 433 to accommodate steel strips of different thicknesses or adjust the required clamping force. Alternatively, it can be a hydraulic or pneumatic adjustment mechanism, where the precise adjustment of the upper pressure roller 432's height is achieved by controlling the extension and retraction of a hydraulic or pneumatic cylinder.

[0067] The number of lower pressure rollers 433 corresponds to that of the upper pressure rollers 432. They are also rotatably connected to the inside of the housing 431 via bearings, and their axis lines are parallel to each other and correspond one-to-one with the axis lines of the upper pressure rollers 432 in the vertical direction to ensure that the steel strip 300 can be stably clamped when passing between the upper and lower pressure rollers 433. The surface of the lower pressure rollers 433 can be hardened to improve their wear resistance and extend their service life.

[0068] The drive roller 434 is positioned below the lower pressure roller 433. Its number can be configured according to the driving force requirements, typically 2-3, and the axis of the drive roller 434 is parallel to the axis of the lower pressure roller 433. The power transmission between the drive roller 434 and the lower pressure roller 433 can be achieved through gear transmission. Specifically, a driving gear is installed at one end of the drive roller 434, and a driven gear is installed at the corresponding end of the lower pressure roller 433. The driving and driven gears mesh with each other, so that when the drive roller 434 rotates, it drives the lower pressure roller 433 to rotate synchronously via gear transmission. Alternatively, chain transmission or belt transmission can also be used, depending on the requirements of transmission accuracy and working environment.

[0069] The driver 435 can be a geared motor, whose output torque and speed can be matched according to the moving speed of the steel belt 300 and the required driving force. The power output end of the geared motor is connected to one end of the drive roller 434 through a coupling. For example, when multiple drive rollers 434 are set, they can be connected by chains or gears and driven by the same geared motor to ensure synchronous rotation of each drive roller 434. When the driver 435 starts, its power output end drives the drive roller 434 to rotate. The drive roller 434 then drives the lower pressure roller 433 to rotate through gears or other transmission methods. Since there is a clamping force between the upper pressure roller 432 and the lower pressure roller 433 on the steel belt 300, under the action of friction, the rotating lower pressure roller 433 can push the steel belt 300 forward in the space between the upper and lower pressure rollers 433, thereby realizing the continuous conveying of the steel belt 300. During the movement of the steel belt 300, the upper pressure roller 432 also rotates passively under the action of friction, further assisting in the smooth conveying of the steel belt 300. This structural design enables the steel belt 300 to maintain a stable posture and uniform tension during conveying, providing a reliable foundation for subsequent processes such as tube winding.

[0070] In some embodiments, please refer to Figure 1 and Figure 3 The output end of the conveyor unit 400 is connected to a large pressure roller 450. The large pressure roller 450 is used to press down the steel belt 300 output from the conveyor unit 400 and make the steel belt 300 enter the inlet 110. A guide rod 460 is provided on the side of the large pressure roller 450. The guide rod 460 is along the length of the steel belt 300 and is used to slide against the side wall of the steel belt 300 to adjust the direction of the steel belt 300 entering the inlet 110.

[0071] Specifically, the large pressure roller 450 applies a vertically downward pressure to the steel belt 300 passing the end of the conveyor unit 400 by its own weight. This pressure can effectively prevent the steel belt 300 from tilting upward or bouncing due to its own gravity or inertia after leaving the conveyor unit 400, ensuring that the steel belt 300 can smoothly and accurately enter the inlet 110 position of the subsequent tube winding mechanism.

[0072] Guide rods 460 are typically installed on both sides of the steel strip 300 in the width direction, with at least one on each side. The rod body is close to the side wall of the steel strip 300. When the steel strip 300 tends to deviate laterally during the conveying process, its side wall will contact the guide rod 460 and be blocked and guided by the guide rod 460, thereby forcing the steel strip 300 to move along the path defined by the guide rod 460. This ensures that the steel strip 300 can enter the inlet 110 with the correct lateral position and angle, avoiding problems such as uneven wall thickness, excessive ovality, or even inability to be rolled normally after the tube is formed due to the steel strip 300 being skewed.

[0073] Preferably, the position and height of the guide rod 460 are usually adjustable to accommodate the conveying needs of steel strips 300 with different width specifications. For example, the position of the guide rod 460 in the horizontal and vertical directions can be finely adjusted by setting a waist-shaped hole or adjusting bracket to ensure that it maintains a suitable gap and contact force with the side wall of the steel strip 300.

[0074] Preferably, a pressure bar 470 for pressing down the steel strip 300 is provided in front of the roller assembly 430. A bearing is installed on the pressure bar 470. The bearing is used to roll and contact the steel strip 300 and provide a pressing force so that the steel strip 300 can smoothly enter the roller assembly 430.

[0075] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cage-type sliding body shaping thin-walled spiral welded pipe processing equipment, characterized in that, include: The cage-type sliding shaping and rotating unit has a cage-like structure with an inlet for steel strip input and an outlet for the tube body formed after welding the steel strip at opposite ends. A channel is formed between the inlet and the outlet for the steel strip to be spirally wound. The cage-type sliding shaping and rotating unit slides against the outer wall of the steel strip in a direction parallel to the axial direction of the tube body, forming a resistance towards the inlet that hinders the movement of the steel strip towards the outlet, thereby reducing the weld seam between the steel strips. In the radial plane of the tube body, the cage-type sliding shaping and rotating unit rolls against the outer wall of the steel strip to provide rotational support for the steel strip. The welding unit, which passes through the cage-type sliding body shaping and rotating unit, is suitable for welding the weld seams between the wound steel strips.

2. The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment as described in claim 1, characterized in that, The cage-type sliding body shaping and rotating unit includes: A cage-like frame, wherein the inlet and the outlet are respectively located at both ends of the cage-like frame along its length direction, and the cage-like frame is evenly distributed with a plurality of support plates having through holes in the middle, and the through holes of the plurality of support plates are combined to form the channel. Multiple supports are respectively disposed between two adjacent support plates. The multiple supports are arranged in a circular pattern around the outer periphery of the tube. The two ends of each support are respectively connected to two adjacent support plates. The axial direction of the support is parallel to the length direction of the cage frame. Multiple rotating bodies are respectively connected to multiple supporting bodies and coaxially arranged with the supporting bodies. Each rotating body has a degree of freedom of rotation about its axis. The outer circumferential wall of the rotating body is used to roll against the outer wall of the steel strip or the tube, and along the axis of the rotating body, it is used to provide resistance to prevent the steel strip from moving towards the outlet direction. The axis of the rotating body is arranged perpendicular to the radial direction of the tube.

3. The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment as described in claim 2, characterized in that, At least one rotating body is rotatably disposed on one of the supports, and multiple rotating bodies on multiple supports are arranged in a spiral shape and are consistent with the spiral winding direction of the tube.

4. The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment as described in claim 2, characterized in that, The support plate near the inlet has a notch at one of its lower corners. The steel strip is fed into the channel through the notch and wound in a spiral shape. A pressing component is provided at the notch to press down the steel strip and make its outer wall adhere to the rotating body.

5. The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment as described in claim 4, characterized in that, A limiting block is connected to the support plate near the inlet along the steel strip input path. The limiting block is adapted to slide against the side wall of the steel strip to guide the steel strip into the channel and correct the spiral winding direction of the steel strip. The connection position of the limiting block on the support plate is adjustable.

6. The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment as described in claim 1, characterized in that, The welding unit includes: A welding machine, connected to the cage-type sliding body shaping and rotating unit, has a welding head that passes through the upper end of the cage-type sliding body shaping and rotating unit and is used to weld the weld seam between steel strips. An encoder is connected to the cage-type sliding body shaping and rotating unit and rolls against the outer wall of the steel strip. The encoder is used to rotate synchronously with the steel strip and collect the position information of the steel strip weld seam in real time. The control box is connected to the cage-type sliding body shaping and rotating unit. The control box is electrically connected to the welding machine and the encoder respectively. The control box is used to receive the position information output by the encoder and control the operation of the welding machine.

7. The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment as described in claim 1, characterized in that, The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment also includes: A conveyor unit is located near the inlet of the cage-type sliding body shaping and rotating machine unit. A steel belt passes through the conveyor unit. The conveyor unit is used to push the steel belt into the cage-type sliding body shaping and rotating machine unit in a spiral motion. The angle between the direction of the steel belt entering the inlet and the length direction of the cage-type sliding body shaping and rotating machine unit can be adjusted.

8. The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment as described in claim 7, characterized in that, The conveyor unit includes: Frame; A rotating platform, one end of which is rotatably connected to the upper end of the frame, and the other end having a degree of freedom of rotation on the plane of the upper end of the frame; A roller assembly, connected to the upper end of the rotating platform, is used to clamp the steel strip and push the steel strip into the inlet; The pushing mechanism is connected at one end to the upper end of the frame and at the other end to the other end of the rotating platform. The pushing mechanism is used to push the rotating platform to rotate, thereby adjusting the angle between the direction of the steel strip output by the roller assembly and the length direction of the cage-type sliding body shaping and rotating unit.

9. The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment as described in claim 8, characterized in that, The roller assembly includes: Box; The upper pressure rollers are multiple and arranged in a row, rotatingly connected to the inside of the box. Multiple lower pressure rollers are rotatably connected in a row inside the housing. The lower pressure rollers are located below the upper pressure rollers and form a space between them for the steel strip to pass through. The height of the upper pressure rollers is adjustable. Multiple drive rollers are arranged in a row inside the housing. The drive rollers are located below the lower pressure rollers. The drive rollers are connected to the lower pressure rollers by a power transmission and are used to drive the lower pressure rollers to rotate. A clamping force is formed between the lower pressure rollers and the upper pressure rollers to clamp the steel strip, and the rotation of the lower pressure rollers pushes the steel strips to move. A driver, located outside the housing, has a power output end that passes through the housing and is connected to the drive roller via power transmission. The driver is adapted to drive the drive roller to rotate.

10. The cage-type sliding body shaping thin-walled spiral welded pipe processing equipment as described in claim 7, characterized in that, The output end of the conveyor unit is connected to a large pressure roller, which is used to press down the steel belt output from the conveyor unit and allow the steel belt to enter the inlet; a guide rod is provided on the side of the large pressure roller, the guide rod is along the length direction of the steel belt and is used to slide against the side wall of the steel belt to adjust the direction of the steel belt entering the inlet.

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