Forming preparation process of hole net reinforced composite pipe
By using traction plates for connection and inner and outer wall extrusion coating in the production of perforated reinforced composite pipes, the problem of exposed perforated mesh at the cut end of the pipes was solved, achieving the effects of simplifying the process, reducing costs, and improving product quality.
Patent Information
- Application Number
- CN202512053772.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-02-27
AI Technical Summary
The existing perforated reinforced composite pipes have exposed perforated mesh at the rear end after cutting, requiring additional sealing, which leads to complex production processes, high costs, and unstable quality.
Before and after cutting the perforated tube skeleton, two adjacent perforated tube skeletons are connected by a traction plate, and the inner and outer walls are extruded and coated during the conveying process to form a continuous plastic layer. After cutting, fine processing is carried out to eliminate metal exposure.
It simplifies the production process, reduces costs, improves production efficiency and product consistency, ensures that the pipe ends have a complete plastic seal structure, and enhances structural integrity and long-term reliability.
Smart Images
Figure CN121571952A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of preparation process of hole net reinforced composite pipe, more particularly, to a hole net reinforced composite pipe forming preparation process. BACKGROUND
[0002] Composite pipes, especially those with metal hole nets as reinforcing frameworks, have been widely used in the fields of water supply and drainage, petroleum and chemical industry, and gas transportation, due to their strength of metal materials and corrosion resistance of plastic materials. The general preparation process of hole net reinforced composite pipe is as follows: after the coiled hole net steel belt is unwound and leveled, it is spirally wound and welded to form a continuous hole net pipe framework, then plastic layers are synchronously extruded on the inner and outer surfaces of the framework, and after cooling and setting, the pipe is cut to the required length to obtain a single pipe.
[0003] However, the above-mentioned existing process has a significant deficiency. Since the cutting is performed after the plastic layer is completely covered and cooled, the cutting section exposes the end face of the internal hole net steel belt. If these exposed metal end faces are not treated, they will easily rust in a corrosive environment, affecting the sealing performance of the pipe end and the overall service life of the pipe. Therefore, the existing technology usually needs to add an additional end face plugging step after the cutting process, that is, hot melt plastic or special sealing members are used to seal the hole net section of the pipe ends. This additional step not only increases the complexity of the production process and the production cycle, but also increases the cost of raw materials and labor, and the stability of the plugging quality also faces challenges, which may become a potential weak link of the pipe.
[0004] Therefore, it is urgent to design a new hole net reinforced composite pipe forming preparation process that can fundamentally avoid the exposure of the pipe end hole net, simplify the production process, and improve the consistency of the pipe end quality. SUMMARY
[0005] The purpose of the present application is to provide a hole net reinforced composite pipe forming preparation process, which aims to solve the technical problems of complex production process and high cost caused by the additional plugging of the exposed hole net end face of the hole net reinforced composite pipe after cutting in the prior art.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present application is to provide a hole net reinforced composite pipe forming preparation process, comprising the following steps: S100: unwinding and leveling the coiled hole net steel belt; S200: spirally winding the leveled hole net steel belt and welding the weld seams formed between the hole net steel belts to form a hole net pipe framework after welding; S300: cutting the welded hole net pipe framework; S400: The cut perforated tube skeleton is conveyed along its axial direction, and the perforated tube skeletons are spaced apart during the conveying process. S500: The inner and outer walls of a continuously conveyed multi-porous mesh tube skeleton are extruded and coated to produce a perforated mesh reinforced composite tube. S600: Cooling treatment for extruded perforated reinforced composite pipe; S700: Cut the gap between two adjacent perforated reinforced composite pipes.
[0007] In one possible implementation, step S400 above includes the following steps in sequence: S410: The cut perforated tube skeleton is conveyed along its axial direction so that adjacent perforated tube skeletons are spaced apart. S420: Between two adjacent perforated tube frames that are spaced apart, multiple traction plates are used to connect one end of one perforated tube frame and the other end of the other perforated tube frame, so that the multiple traction plates and the two adjacent perforated tube frames are combined to form a whole.
[0008] In one possible implementation, step S500 above includes the following steps: S510: Extrusion coating is applied to the inner and outer walls of multiple traction plates between two adjacent perforated tube skeletons, so that the coating covers multiple traction plates.
[0009] In one possible implementation, step S700 above includes the following steps in sequence: S710: Cut the gap between two adjacent perforated reinforced composite pipes; S720: The traction piece exposed at the end face of the cut perforated reinforced composite pipe is removed, forming a depression after removal; S730: Use filler material to fill depressions.
[0010] In one possible implementation, in step S420 above, the thickness of the traction piece is made smaller than the wall thickness of the perforated tube skeleton, and the multiple traction pieces are evenly distributed circumferentially along the ends of the perforated tube skeleton.
[0011] In one possible implementation, the traction piece is arranged in an arc shape, the arc of which matches the end arc of the perforated tube skeleton.
[0012] In one possible implementation, the end of the traction piece is welded to the adjacent two perforated tube frames.
[0013] In one possible implementation, in step S400 above, an automatic interval feeder is used to automatically and intermittently convey the multi-hole mesh frame, and the interval distance between the multi-hole mesh frames remains consistent.
[0014] In one possible implementation, in step S500 above, plastic is extruded using a plastic extruder and applied to the inner and outer walls of the multi-pore mesh skeleton.
[0015] In one possible implementation, in step S700 above, an ultrasonic positioning and cutting saw is used to position and cut the gap between two adjacent perforated reinforced composite pipes, and then the cutting process is performed after positioning.
[0016] The beneficial effects of the perforated mesh reinforced composite pipe forming and manufacturing process provided by this invention are as follows: Compared with the prior art, the perforated mesh reinforced composite pipe forming and manufacturing process of this invention includes unwinding and leveling the perforated mesh steel strip, winding and welding the perforated mesh steel strip to form a perforated mesh pipe skeleton, cutting the perforated mesh pipe skeleton, intermittently conveying the perforated mesh pipe skeleton, covering the inner and outer walls of multiple perforated mesh pipe skeletons with material to form a perforated mesh reinforced composite pipe, cooling the perforated mesh reinforced composite pipe, and cutting the interval between two adjacent perforated mesh reinforced composite pipes. This solves the technical problem in the prior art where the perforated mesh is exposed at the end of the cut perforated mesh reinforced composite pipe, requiring additional sealing, which leads to complex production processes and high costs. The beneficial effects are: 1) Completely eliminate the end-face sealing process, simplify the process flow, and fundamentally ensure that the end face of the finished pipe is a complete plastic sealing structure with no exposed metal mesh. This eliminates the essential and additional end-face sealing process in the existing technology, and significantly simplifies the process flow.
[0017] 2) Significantly reduce production costs. By eliminating the sealing process, the required equipment investment, special sealing materials (such as hot melt plastic or sealing parts), energy consumption, and additional labor costs are saved, thereby effectively reducing the overall manufacturing cost of the pipe.
[0018] 3) Improved production efficiency and capacity: The simplification of the process directly leads to a faster production cycle. Eliminating a separate processing step reduces material turnover and waiting time, enabling the production line to operate continuously and efficiently, thereby producing more qualified pipes per unit time and increasing overall capacity.
[0019] 4) Significantly improves pipe end quality and product consistency. The pipe ends are naturally formed by extruded plastic layers, ensuring their sealing and corrosion resistance are completely consistent with the pipe body. This quality is far superior to that of subsequent secondary sealing. It avoids quality risks such as leakage and corrosion caused by inadequate sealing, poor adhesion, or material differences. The pipe ends are flat and uniform, all made of plastic, resulting in an aesthetically pleasing appearance and consistent performance, which helps improve product image and standardization.
[0020] 5) Enhanced structural integrity and long-term reliability: The end face and body of the finished pipe are an integrated plastic structure without additional seams or joints. This enhances the integrity of the pipe end structure and eliminates the risk of peeling or cracking that may be caused by differences in thermal expansion coefficients and aging performance between the sealing layer and the main pipe, thereby improving the reliability and lifespan of the pipe during long-term use. Attached Figure Description
[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0022] Figure 1 A flowchart of the molding and preparation process of the perforated reinforced composite tube provided in the embodiments of the present invention; Figure 2 This is a schematic diagram of the molding and manufacturing process of a perforated reinforced composite tube according to another embodiment of the present invention; Figure 3 for Figure 1 A schematic diagram of the front view structure of two adjacent perforated mesh reinforced composite tubes in the molding and preparation process of the perforated mesh reinforced composite tube provided in the embodiment; Figure 4 for Figure 3 Enlarged view of the intervals in the middle; Figure 5 for Figure 2 A schematic diagram of the front view structure of two adjacent perforated mesh reinforced composite tubes in the molding and preparation process of the perforated mesh reinforced composite tube provided in the embodiment; Figure 6 for Figure 5 Enlarged view of the intervals in the image.
[0023] Explanation of reference numerals in the attached figures: 1. Perforated tube skeleton; 2. Covering material; 3. Traction plate; 4. Cutting machine. Detailed Implementation
[0024] 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.
[0025] Please see Figure 1 , Figures 3-4 The forming and manufacturing process of the perforated mesh reinforced composite pipe provided by the present invention will now be described. The forming and manufacturing process of the perforated mesh reinforced composite pipe includes the following steps: S100: Unwinding and leveling of rolled perforated steel strip; S200: The leveled perforated steel strip is spirally wound and the weld seam formed between the perforated steel strips is welded to form a perforated tube skeleton 1 after welding. S300: Cut the welded perforated tube skeleton 1; S400: The cut perforated tube skeleton 1 is conveyed along its axial direction, and during the conveying process, adjacent perforated tube skeletons 1 are spaced apart. S500: The inner and outer walls of the continuously conveyed multi-porous mesh tube skeleton 1 are subjected to extrusion coating 2 to produce a porous mesh reinforced composite tube. S600: Cooling treatment for extruded perforated reinforced composite pipe; S700: Cut the gap between two adjacent perforated reinforced composite pipes.
[0026] The perforated mesh reinforced composite tube forming and manufacturing process provided by this invention solves the technical problem of complex production process and high cost caused by the need for additional sealing of the exposed perforated mesh at the rear end of the cut perforated mesh reinforced composite tube, compared with the prior art. The beneficial effects include: 1) Completely eliminate the end-face sealing process, simplify the process flow, and fundamentally ensure that the end face of the finished pipe is a complete plastic sealing structure with no exposed metal mesh. This eliminates the essential and additional end-face sealing process in the existing technology, and significantly simplifies the process flow.
[0027] 2) Significantly reduce production costs. By eliminating the sealing process, the required equipment investment, special sealing materials (such as hot melt plastic or sealing parts), energy consumption, and additional labor costs are saved, thereby effectively reducing the overall manufacturing cost of the pipe.
[0028] 3) Improved production efficiency and capacity: The simplification of the process directly leads to a faster production cycle. Eliminating a separate processing step reduces material turnover and waiting time, enabling the production line to operate continuously and efficiently, thereby producing more qualified pipes per unit time and increasing overall capacity.
[0029] 4) Significantly improves pipe end quality and product consistency. The pipe ends are naturally formed by extruded plastic layers, ensuring their sealing and corrosion resistance are completely consistent with the pipe body. This quality is far superior to that of subsequent secondary sealing. It avoids quality risks such as leakage and corrosion caused by inadequate sealing, poor adhesion, or material differences. The pipe ends are flat and uniform, all made of plastic, resulting in an aesthetically pleasing appearance and consistent performance, which helps improve product image and standardization.
[0030] 5) Enhanced structural integrity and long-term reliability: The end face and body of the finished pipe are an integrated plastic structure without additional seams or joints. This enhances the integrity of the pipe end structure and eliminates the risk of peeling or cracking that may be caused by differences in thermal expansion coefficients and aging performance between the sealing layer and the main pipe, thereby improving the reliability and lifespan of the pipe during long-term use.
[0031] As another embodiment of the perforated mesh reinforced composite tube forming and manufacturing process of the present invention, please refer to some embodiments. Figure 2 , Figures 5-6 The above step S400 includes the following steps in sequence: S410: The cut perforated tube skeleton 1 is conveyed along its axial direction so that adjacent perforated tube skeletons 1 are spaced apart. S420: Between two adjacent perforated tube frames 1 that are spaced apart, multiple traction plates 3 are used to connect one end of one perforated tube frame 1 and the other end of the multiple traction plates 3 to the end of the other perforated tube frame 1, so that the multiple traction plates 3 and the two adjacent perforated tube frames 1 are combined to form a whole.
[0032] In step S410 above, the cut perforated tube skeleton 1 is conveyed along its axial direction, and the conveying cycle is controlled so that a preset interval distance is maintained between two adjacent perforated tube skeletons 1.
[0033] In step S420 above, multiple traction plates 3 are used to connect two adjacent perforated tube frames 1 that are spaced apart. Specifically, one end of the multiple traction plates 3 is connected to the tail end of the previous perforated tube frame 1, and the other end is connected to the head end of the next perforated tube frame 1, so that the two adjacent independent perforated tube frames 1 are connected end to end by the multiple traction plates 3 to form an integral structure that can be continuously transported.
[0034] By introducing the traction piece 3 to connect the components, the originally discrete and spaced multiple perforated mesh skeleton 1 units are physically connected in series into a quasi-continuous, rigid conveyor. This innovative intermediate structure plays the following key roles: 1) Ensure the continuity and stability of the conveying: The connecting body formed by the traction plate 3 enables the spaced perforated mesh tube skeleton 1 to be synchronously and smoothly pulled through the subsequent covering material 2, cooling and other stations like a long tube, avoiding the asynchrony, rolling or misalignment that may occur in the conveying of a single short tube, and ensuring the smoothness and stability of the production process.
[0035] 2) Precisely maintaining the spacing: The length of the traction plate 3 defines the precise spacing between the end faces of adjacent perforated tube skeletons 1. This spacing area is the area where the plastic is completely filled and fused during subsequent extrusion coating 2, and it is also the cutting position of the final finished tube. The traction plate 3 plays a dual role of spacing and isolation.
[0036] 3) Creating integrated processing conditions for subsequent processes: The connected whole consisting of "perforated tube skeleton 1 - traction piece 3 - perforated tube skeleton 1" enables the subsequent synchronous inner and outer wall extrusion coating 2 (step S500) to be completed in one continuous action. The plastic melt will simultaneously wrap the perforated tube skeleton 1 and the traction piece 3, forming a seamless, integrated plastic layer after cooling.
[0037] In some embodiments, please refer to Figure 2 , Figures 5-6 The above step S500 includes the following steps: S510: The inner and outer walls of multiple traction plates 3 between two adjacent perforated tube frames 1 are subjected to extrusion coating 2, so that the coating 2 covers the multiple traction plates 3. That is, while the inner and outer walls of the continuously conveyed perforated tube frame 1 are being extruded and coated simultaneously, the inner and outer walls of the multiple traction plates 3 connecting adjacent frames are also being extruded and coated simultaneously. This ensures that the molten plastic material not only covers each section of the perforated tube frame 1, but also completely covers and fills all the space around the traction plates 3.
[0038] This step is one of the core steps to achieve full plastic sealing of the end face and no metal exposure. It realizes complete plastic filling and structural shaping of the interval area, ensures the integrity of the material of the final cut surface, enhances the structural strength and sealing reliability of the transition area, and improves the impact resistance and deformation resistance of the end cap.
[0039] In some embodiments, please refer to Figure 2 , Figures 5-6 The above step S700 includes the following steps in sequence: S710: Cut the gap between two adjacent perforated mesh reinforced composite tubes (using a cutting machine 4 from the prior art, the cutting method of which is described in the prior art); after the plastic layer has completely cooled and solidified, precisely cut the connection between two adjacent perforated mesh tube skeletons 1 (i.e., the preliminary composite tubes) wrapped in plastic layers. This cutting position is located in the middle of the pure plastic gap segment defined by the traction piece 3 and completely filled with plastic.
[0040] S720: The traction piece 3 exposed on the end face of the cut perforated reinforced composite pipe is removed, creating a depression. After cutting, the end face of the traction piece 3, which is wrapped inside the end face, will be exposed. At this time, the exposed traction piece 3 is partially removed from the plastic end face of the composite pipe by mechanical processing (such as milling or drilling) or hot melting, thereby forming a regular recessed area on the originally flat pipe end face.
[0041] S730: Use filler material to fill the depression. Select a similar or special filler material that is compatible with the plastic coating material of the pipe body and has strong adhesion. Fill the depression area smoothly through hot melt welding, injection molding or bonding, so that it is flush with the surrounding original plastic surface of the pipe end and integrated into one.
[0042] The above embodiments achieve full plasticization and material uniformity of the end face. By removing and filling, the end face of the finished tube can be made 100% pure plastic in both appearance and material, meeting higher application standards. This improves the processing quality and aesthetics of the end face, resulting in a smoother finish, more regular shape, and enhanced product appearance.
[0043] It is worth noting that the "excavation-filling" process here is fundamentally different from the traditional process of "sealing" the "exposed perforated cross-section": 1) The objects of operation are different. In this embodiment, fine processing is carried out inside a plastic body that has been completely sealed by plastic and has no exposed metal; while the traditional process is to cover and seal the exposed and complex metal cross-section.
[0044] 2) Quality basis and reliability are different. The former is based on a complete plastic seal, making quality easier to control and the interface more reliable; the latter attempts to establish a sealed interface between metal and plastic, which is difficult to achieve and can easily become a weak link.
[0045] Therefore, even using this embodiment, the present invention maintains fundamental advantages over traditional processes in the prior art in avoiding metal exposure, simplifying core processes, and improving sealing reliability. This refined processing solution is an enhancement and supplement to the core process, rather than a return to the core problem.
[0046] In some embodiments, please refer to Figure 2, Figures 5-6 In step S420 above, the thickness of the traction piece 3 is made less than the wall thickness of the perforated tube frame 1, and the multiple traction pieces 3 are evenly distributed along the circumferential direction of the end of the perforated tube frame 1. The thickness of the traction piece 3 is designed to be less than the wall thickness of the perforated tube frame 1, and the multiple traction pieces 3 are evenly distributed along the circumferential direction of the end of the perforated tube frame 1.
[0047] The beneficial effects of the above embodiments include: 1) Ensuring the continuity, flatness, and uniform wall thickness of the two-layer coating. Since the thickness of the traction piece 3 is less than the wall thickness of the skeleton, when it is placed between the two skeleton sections, a gentle step or depression will be formed between its outer surface and the outer surface of the skeleton. During the subsequent simultaneous extrusion of the coating 2 (step S500), the molten plastic can flow smoothly and completely fill this area, thereby forming a smooth transition plastic coating layer without sudden protrusions at the position of the traction piece 3. This ensures that the outer and inner diameters of the finished pipe in the connection area are basically consistent, and the wall thickness is uniform, avoiding stress concentration or increased flow resistance caused by local thickening.
[0048] 2) The internal structure of the plastic end cap area is optimized. The traction plate 3, as a reinforcement encapsulated inside the plastic, has a small thickness, which minimizes its obstruction to the flow of the plastic melt, and helps the plastic to better fuse and densify around it. The uniform circumferential distribution ensures that the plastic end cap area is subjected to uniform stress during cooling and shrinkage, reducing internal stress or deformation caused by uneven shrinkage, thereby improving the structural integrity of this area.
[0049] 3) Facilitates final separation or processing. During the final cutting, whether directly cutting to obtain the end face with the plastic-wrapped traction piece 3 or removing and filling, the thinner traction piece 3 is easier to cut or remove, requires less processing force, and is more friendly to the cut quality or subsequent filling operation.
[0050] 4) Maintaining a balance between connection strength and lightweight design, the traction plates 3 are evenly distributed along the circumference, enabling stable and reliable circumferential connection and radial positioning of the two frame sections with minimal material, ensuring no relative torsion or misalignment occurs during transport. Simultaneously, the uniform distribution ensures balanced traction force transmission. The smaller thickness also aligns with the lightweight design philosophy while fulfilling the connection function.
[0051] 5) To create conditions for a high-quality end face, the evenly distributed thin traction sheet 3, after being wrapped in plastic, results in a more homogeneous plastic end cap material throughout the entire interval area. This lays a good internal foundation for finally obtaining a flat, strong, and highly sealed pure plastic end face (whether formed by direct cutting or by patching).
[0052] The number of traction plates 3 is 3-6, and in this embodiment there are 4, which are evenly arranged along the circumference.
[0053] In some embodiments, please refer to Figure 2 , Figures 5-6 The traction piece 3 is arc-shaped, and its arc matches the end arc of the perforated tube skeleton 1. The matching curvature of the arc of the traction piece 3 with the end arc of the perforated tube skeleton 1 has the following beneficial effects: 1) Achieving maximized and stable surface contact connection, the arc-shaped traction plate 3 can achieve a highly consistent curved surface fit with the end of the cylindrical perforated mesh frame 1 to which it is connected. This large-area close contact significantly enhances the stability of the connection and the uniformity of force transmission compared to point contact or small-area contact. It ensures that during the conveying process, the traction plate 3 and the frame are not prone to relative sliding or torsion, maintaining the rigidity and synchronization of the overall conveying structure.
[0054] 2) Optimizing the flow field and encapsulation effect of the plastic melt: During the subsequent synchronous extrusion coating 2 (step S500), the molten plastic needs to flow through and encapsulate the connection area formed by the traction plate 3 and the skeleton end. The arc-shaped traction plate 3 smoothly transitions to the skeleton end, forming a continuous and smooth fluid channel, avoiding melt stagnation, eddies, or incomplete filling that may be caused by abrupt shape changes (such as right angles or steps). This facilitates dense and defect-free filling of the plastic in the interstitial area, forming a high-quality plastic end cap.
[0055] 3) The structural strength and sealing integrity of the plastic end cap area are improved. The arc-shaped bonding interface makes the thickness distribution of the outer plastic layer more uniform and the internal bonding tighter. After cooling and molding, the stress distribution of the composite structure formed by the plastic, traction piece 3, and skeleton end in this area is more reasonable, which can effectively resist internal pressure and external load. At the same time, the excellent wrapping properties further ensure the complete sealing of the plastic to the skeleton end and the edge of the traction piece 3, eliminating any potential leakage paths.
[0056] 4) Facilitates processing, assembly, and final treatment. The traction piece 3 with a matching curvature is easier to manufacture (e.g., stamping) and more accurate in assembly and positioning. During the final cut (step S700), whether the traction piece 3 is left inside the end face or removed, the regular arc-shaped contour makes the cutting or processing operation easier and helps to obtain a flat and regular pipe end face.
[0057] 5) Synergistic effect with the aforementioned design features: This arc-shaped feature is highly compatible with the design concepts of "thickness less than the skeleton wall thickness" and "uniform distribution around the circumference" in previous embodiments. The thinner arc-shaped sheets are evenly distributed around the circumference, together forming an ideal intermediate component that can be firmly connected, minimizes interference with plastic flow, and ultimately perfectly integrates into the product structure. This reflects the systematic and rigorous nature of the invention in its detailed design.
[0058] In some embodiments, please refer toFigure 2 , Figures 5-6 The ends of the traction piece 3 are welded to the adjacent two perforated mesh tube frames 1. This achieves a strong and reliable rigid connection, avoiding production interruptions or product quality problems caused by connection failure during transportation, and improving the overall structural strength.
[0059] In some embodiments, please refer to Figure 1 , Figures 3-4 In step S400 above, an automatic interval feeder is used to automatically and intermittently feed the multi-hole mesh tube skeleton 1, and the interval distance of the multi-hole mesh tube skeleton 1 remains consistent. The automatic interval feeder in this embodiment is existing technology, which can realize automatic, continuous, and interval feeding of the multi-hole mesh tube skeleton 1, ensuring that the interval distance remains consistent, which is beneficial to subsequent processing and improves processing quality.
[0060] By setting up an automatic interval feeder, the release and advance rhythm of each perforated tube skeleton 1 can be controlled in real time and with precision, which improves the automation level and stability of the production process, enhances the adaptability and flexibility of the process, and also allows for preset interval distances.
[0061] The automatic spacing feeder in this embodiment provides an independent and efficient spacing maintenance method. It can work in conjunction with the aforementioned embodiment using traction plates 3 for physical connection, where the feeder handles initial precise spacing and conveying, and the traction plates 3 subsequently provide a reinforcing connection, forming a double safety net. Furthermore, under specific process requirements (such as extremely high purity requirements for the end-face material, where it is desirable to completely avoid any internal connecting parts), the automatic spacing feeder can also serve as the primary or even sole means of maintaining the spacing, using its continuous and precise drive to maintain the spacing until the plastic coating 2 secures it, demonstrating the versatility and configurability of the process routes of this invention.
[0062] In some embodiments, please refer to Figure 1 In step S500 above, plastic is extruded using a plastic extruder and applied to the inner and outer walls of the multi-porous mesh skeleton 1. The plastic extruder in this embodiment is existing technology and can automatically apply material 2 to the inside and outside of the porous mesh skeleton 1.
[0063] In some embodiments, please refer to Figure 1 In step S700 above, an ultrasonic positioning and cutting saw is used to locate the cutting position at the interval between two adjacent perforated reinforced composite tubes, and then the cutting process is performed after positioning. The ultrasonic positioning and cutting saw in this embodiment is existing technology, which can realize the positioning and cutting position, and after finding the cutting position, the cutting process is performed to produce the finished product.
[0064] 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 process for forming and preparing perforated mesh reinforced composite pipes, characterized in that, Includes the following steps: S100: Unwinding and leveling of rolled perforated steel strip; S200: The leveled perforated steel strip is spirally wound and the weld seam formed between the perforated steel strips is welded to form a perforated tube skeleton after welding. S300: Cut the welded perforated tube skeleton; S400: The cut perforated tube skeleton is conveyed along its axial direction, and the perforated tube skeletons are spaced apart during the conveying process. S500: The inner and outer walls of a continuously conveyed multi-porous mesh tube skeleton are extruded and coated to produce a perforated mesh reinforced composite tube. S600: Cooling treatment for extruded perforated reinforced composite pipe; S700: Cut the gap between two adjacent perforated reinforced composite pipes.
2. The forming and preparation process of the perforated reinforced composite pipe as described in claim 1, characterized in that, The above step S400 includes the following steps in sequence: S410: The cut perforated tube skeleton is conveyed along its axial direction so that adjacent perforated tube skeletons are spaced apart. S420: Between two adjacent perforated tube frames that are spaced apart, multiple traction plates are used to connect one end of one perforated tube frame and the other end of the other perforated tube frame, so that the multiple traction plates and the two adjacent perforated tube frames are combined to form a whole.
3. The forming and preparation process of the perforated mesh reinforced composite pipe as described in claim 2, characterized in that, Step S500 above includes the following steps: S510: Extrusion coating is applied to the inner and outer walls of multiple traction plates between two adjacent perforated tube skeletons, so that the coating covers multiple traction plates.
4. The forming and preparation process of the perforated mesh reinforced composite pipe as described in claim 3, characterized in that, The above step S700 includes the following steps in sequence: S710: Cut the gap between two adjacent perforated reinforced composite pipes; S720: The traction piece exposed at the end face of the cut perforated reinforced composite pipe is removed, forming a depression after removal; S730: Use filler material to fill depressions.
5. The forming and preparation process of the perforated mesh reinforced composite pipe as described in claim 2, characterized in that, In step S420 above, the thickness of the traction piece is made smaller than the wall thickness of the perforated tube skeleton, and multiple traction pieces are evenly distributed along the circumference of the end of the perforated tube skeleton.
6. The forming and preparation process of the perforated mesh reinforced composite pipe as described in claim 2, characterized in that, The traction plate is arc-shaped, and its arc shape matches the end arc shape of the perforated tube skeleton.
7. The forming and preparation process of the perforated reinforced composite pipe as described in claim 2, characterized in that, The end of the traction plate is welded to the adjacent two perforated tube frames.
8. The forming and preparation process of the perforated reinforced composite pipe as described in claim 1, characterized in that, In step S400 above, an automatic interval feeder is used to automatically and intermittently convey the multi-hole mesh tube skeleton, and the interval distance of the multi-hole mesh tube skeleton remains consistent.
9. The forming and preparation process of the perforated mesh reinforced composite pipe as described in claim 1, characterized in that, In step S500 above, plastic is extruded using a plastic extruder and applied to the inner and outer walls of the multi-hole mesh tube skeleton.
10. The forming and preparation process of the perforated reinforced composite pipe as described in claim 1, characterized in that, In step S700 above, an ultrasonic positioning and cutting saw is used to position and cut the gap between two adjacent perforated reinforced composite pipes, and then the cutting process is performed after positioning.