Wear-resistant tear-resistant composite pe core pipe

Abstract

The utility model relates to the technical field of core pipe, concretely to a wear -resisting tear -resistant composite PE core pipe, including core pipe body, the core pipe body contains PE inner tube, the outside of PE inner tube is provided with reinforcing layer pipe, the outside of reinforcing layer pipe is provided with wear -resistant layer pipe, the PE inner tube is high density polyethylene layer, the reinforcing layer pipe is the blend braided layer of glass fiber and low density polyethylene, and the wear -resistant layer pipe is the ultrahigh molecular weight polyethylene layer. The utility model discloses a core pipe body setting, after setting reinforcing layer pipe and wear -resistant layer pipe on the outside of PE inner tube, the tear resistance and wear resistance of the whole core pipe body are improved, can bear the tension effect and external force impact of high frequency winding and unwinding and contact friction with equipment parts, avoid tearing and wearing condition.

Description

Technical Field

[0001] This utility model relates to a composite PE core tube, and more particularly to a wear-resistant and tear-resistant composite PE core tube, belonging to the field of core tube technology. Background Technology

[0002] PE core tubes are tubular structural components made with polyethylene as the core substrate. Their main purpose is as a winding carrier for roll products such as films, paper, metal foils, textiles, and wires and cables.

[0003] Traditional PE core tubes are typically single-structure polyethylene pipes with significant performance defects. They lack tear resistance and are prone to cracking and tearing under the tension of frequent winding and unwinding, or when subjected to external impacts or compression, resulting in a shortened service life. In addition, the wear resistance of PE material itself is limited. During the winding and unwinding process, friction between the surface and the material, as well as contact friction between the core tube and equipment parts, can easily lead to surface wear, fuzzing, or even breakage.

[0004] Therefore, there is an urgent need for an improved wear-resistant and tear-resistant composite PE core tube to solve the aforementioned problems. Utility Model Content

[0005] The purpose of this utility model is to provide a wear-resistant and tear-resistant composite PE core tube. By setting a reinforcing layer and a wear-resistant layer on the outside of the inner PE tube, the overall tear resistance and wear resistance of the core tube body are improved. It can withstand the tension of high-frequency winding and unwinding, external impact, and contact friction with equipment parts, thus avoiding tearing and wear.

[0006] To achieve the above objectives, the main technical solutions adopted by this utility model include: A wear-resistant and tear-resistant composite PE core tube includes a core tube body, the core tube body comprising a PE inner layer tube, a reinforcing layer tube disposed on the outside of the PE inner layer tube, and a wear-resistant layer tube disposed on the outside of the reinforcing layer tube. The PE inner layer tube is a high-density polyethylene layer, the reinforcing layer tube is a blended braided layer of glass fiber and low-density polyethylene, and the wear-resistant layer tube is an ultra-high molecular weight polyethylene layer.

[0007] Preferably, the inner diameter of the core tube body is 50-300mm and the wall thickness is 8-30mm, wherein the thickness of the PE inner tube accounts for 30%-50% of the total wall thickness, the thickness of the reinforcing layer tube accounts for 20%-40% of the total wall thickness, and the thickness of the wear-resistant layer tube accounts for 10%-30% of the total wall thickness.

[0008] Preferably, the inner surface of the PE inner tube is provided with a plurality of reinforcing rings, and a plurality of reinforcing ribs are provided between the plurality of reinforcing rings, and the annular reinforcing rings and the reinforcing ribs are integrally formed with the PE inner tube.

[0009] Preferably, the glass fiber in the reinforcing layer tube has a mass fraction of 15-25%, and the glass fiber is chopped glass fiber with a length of 3-8 mm.

[0010] Preferably, the reinforcing layer tube also contains a uniformly distributed polyester fiber web, the polyester fiber web having a mesh size of 40-80 mesh, and the polyester fiber web is interwoven and fused with the reinforcing layer tube.

[0011] Preferably, the wear-resistant layer tube is uniformly doped with silicon carbide wear-resistant particles with a particle size of 50-100μm, the mass percentage of the silicon carbide wear-resistant particles is 8-15%, and the thickness of the wear-resistant layer tube is 3-6mm.

[0012] Preferably, the outer surface of the wear-resistant tube is coated with a polytetrafluoroethylene coating, the thickness of which is 0.1-0.3 mm.

[0013] Preferably, the surface of the wear-resistant layer tube is provided with a plurality of anti-slip patterns, the anti-slip patterns are a cross-shaped mesh structure, and the depth of the anti-slip patterns is 0.3-1.0mm.

[0014] Preferably, both ends of the core tube body are provided with annular reinforcing rings, which are made of rigid PVC material with a thickness of 3-8mm.

[0015] Preferably, the PE inner tube, the reinforcing tube, the wear-resistant tube, and the annular reinforcing ring are bonded and fixed together by a hot melt adhesive layer.

[0016] This utility model has at least the following beneficial effects: By incorporating a reinforcing layer and a wear-resistant layer on the outside of the inner PE tube, the reinforcing layer enhances the overall tear resistance of the core tube. The tightly woven structure, made of glass fiber and low-density polyethylene, effectively disperses stress, prevents crack propagation, and withstands the tension of high-frequency winding and unwinding as well as external impacts, preventing tearing. Meanwhile, the wear-resistant layer, made of ultra-high molecular weight polyethylene (UHMWPE), possesses excellent wear resistance. Placing this layer on the outside significantly improves the overall wear resistance of the core tube and reduces friction with equipment components, preventing wear. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a schematic diagram showing the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of this utility model; Figure 3 This is a cross-sectional view of the PE inner layer tube, reinforcing layer tube, and wear-resistant layer tube of this utility model. Figure 4 This is a schematic diagram of the polyester fiber web structure of this utility model; Figure 5 This is a schematic diagram of the silicon carbide wear-resistant particle structure of this utility model.

[0018] In the diagram, 1. Core tube body; 2. PE inner tube; 3. Reinforcing tube; 4. Wear-resistant tube; 5. Reinforcing ring; 6. Reinforcing rib; 7. Polyester fiber mesh; 8. Silicon carbide wear-resistant particles; 9. Polytetrafluoroethylene coating; 10. Anti-slip texture; 11. Annular reinforcing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-5 As shown in the figure, this embodiment provides an example of a wear-resistant and tear-resistant composite PE core tube.

[0021] A wear-resistant and tear-resistant composite PE core tube includes a core tube body 1, the core tube body 1 includes a PE inner layer tube 2, a reinforcing layer tube 3 is provided on the outside of the PE inner layer tube 2, and a wear-resistant layer tube 4 is provided on the outside of the reinforcing layer tube 3. The PE inner layer tube 2 is a high-density polyethylene layer, the reinforcing layer tube 3 is a blended braided layer of glass fiber and low-density polyethylene, and the wear-resistant layer tube 4 is an ultra-high molecular weight polyethylene layer.

[0022] By setting the core tube body 1, and then setting the reinforcing layer tube 3 and the wear-resistant layer tube 4 on the outside of the PE inner layer tube 2, the reinforcing layer tube 3 helps to improve the overall tear resistance of the core tube body 1. It is made of glass fiber and low-density polyethylene to form a tight braided structure, which can effectively disperse stress, prevent crack propagation, and withstand the tension of high-frequency winding and unwinding and external impact, thus avoiding tearing. At the same time, the wear-resistant layer tube 4 is made of ultra-high molecular weight polyethylene. Ultra-high molecular weight polyethylene itself has excellent wear resistance. Setting the wear-resistant layer tube 4 on the outside significantly improves the overall wear resistance of the core tube body 1 and the contact friction with equipment parts, thus avoiding wear.

[0023] In this embodiment, as Figures 1-5 As shown, the inner diameter of the core tube body 1 is 50-300mm and the wall thickness is 8-30mm. The thickness of the PE inner tube 2 accounts for 30%-50% of the total wall thickness, the thickness of the reinforcing tube 3 accounts for 20%-40% of the total wall thickness, and the thickness of the wear-resistant tube 4 accounts for 10%-30% of the total wall thickness.

[0024] Three typical size specifications are set according to different roll material winding requirements; Small size: inner diameter 50mm, wall thickness 8mm, PE inner tube 2 thickness 2.4mm (30%), reinforcing tube 3 thickness 3.2mm (40%), wear-resistant tube 4 thickness 2.4mm (30%), suitable for winding small films, wires and cables and other roll materials; Medium specification: inner diameter 175mm, wall thickness 19mm, PE inner tube 2 thickness 7.6mm (40%), reinforcing tube 3 thickness 5.7mm (30%), wear-resistant tube 4 thickness 3.8mm (20%), suitable for winding paper, ordinary textiles and other roll materials; Large specifications: inner diameter 300mm, wall thickness 30mm, PE inner tube 2 thickness 15mm (50%), reinforcing tube 3 thickness 6mm (20%), wear-resistant tube 4 thickness 3mm (10%). Suitable for winding metal foil, heavy textiles and other roll materials. The thickness ratio of each specification has been optimized through mechanical performance testing to achieve lightweight design while ensuring structural strength.

[0025] In this embodiment, as Figures 1-5 As shown, the inner surface of the PE inner tube 2 is provided with several reinforcing rings 5, and several reinforcing ribs 6 are provided between the several reinforcing rings 5. The annular reinforcing rings 5 ​​and the reinforcing ribs 6 are integrally formed with the PE inner tube 2. The mass fraction of glass fiber in the reinforcing tube 3 is 15-25%, and the glass fiber is short-cut glass fiber with a length of 3-8mm.

[0026] By setting reinforcing rings 5 ​​and reinforcing ribs 6, which are evenly distributed inside the PE inner tube 2, the compression and deformation resistance of the PE inner tube 2 is further enhanced. The glass fiber is selected according to the specifications of the core tube body 1: 3mm for small specifications, 5.5mm for medium specifications, and 8mm for large specifications. At the same time, the mass fraction is controlled within 15-25%. When the glass fiber mass is less than 15%, the tear resistance effect is not obvious, while when it is higher than 25%, it will lead to a decrease in the flexibility of the reinforcing tube 3 and easy cracking. After the chopped glass fiber is evenly mixed with the low-density polyethylene matrix, it is woven into a mesh structure by a braiding machine with a braiding density of 20-30 fibers per square centimeter to ensure that the stress can be evenly distributed and effectively prevent crack propagation.

[0027] The reinforcing layer tube 3 also contains a uniformly distributed polyester fiber mesh 7 with a mesh size of 40-80. The polyester fiber mesh 7 is interwoven and fused with the reinforcing layer tube 3. The wear-resistant layer tube 4 contains uniformly doped silicon carbide wear-resistant particles 8 with a particle size of 50-100μm. The mass percentage of silicon carbide wear-resistant particles 8 is 8-15%. The thickness of the wear-resistant layer tube 4 is 3-6mm. The outer surface of the wear-resistant layer tube 4 is coated with a polytetrafluoroethylene coating 9 with a thickness of 0.1-0.3mm.

[0028] With the setting of polyester fiber mesh 7, which is woven from high-modulus polyester fiber, 40 mesh polyester fiber mesh 7 is suitable for small-sized core tube body 1, and 80 mesh is suitable for large-sized core tube body 1. The higher the mesh number, the more significant the reinforcement effect. Polyester fiber mesh 7 can work with glass fiber to further improve the tear resistance and structural stability of the reinforcing layer tube 3. At the same time, the flexibility of polyester fiber mesh 7 can alleviate the brittleness of glass fiber and prevent the reinforcing layer tube 3 from cracking when bent. Silicon carbide particles with a diameter of 50μm are suitable for scenarios with high requirements for surface smoothness, while those with a diameter of 100μm are suitable for scenarios with extremely high requirements for wear resistance. When the mass ratio is less than 8%, the wear resistance improvement effect is limited, and when it is more than 15%, it will affect the forming quality and flexibility of the wear-resistant layer tube 4. Silicon carbide particles are embedded inside the wear-resistant layer tube 4 to form a wear-resistant skeleton, which significantly improves the wear resistance performance. The polytetrafluoroethylene coating 9 has an extremely low coefficient of friction, which can further reduce the friction between the surface of the wear-resistant tube 4 and the roll material and equipment parts, reduce wear, and at the same time have corrosion resistance and high temperature resistance, extending the service life of the core tube body 1.

[0029] The surface of the wear-resistant layer tube 4 is provided with several anti-slip textures 10. The anti-slip textures 10 are cross-shaped mesh structures and the depth of the anti-slip textures 10 is 0.3-1.0mm. Both ends of the core tube body 1 are provided with annular reinforcing rings 11. The annular reinforcing rings 11 are made of rigid PVC material and have a thickness of 3-8mm. The PE inner layer tube 2, the reinforcing layer tube 3, the wear-resistant layer tube 4 and the annular reinforcing rings 11 are bonded and fixed together by a hot melt adhesive layer.

[0030] By setting the anti-slip texture 10, without affecting the wear between the core tube body 1 and the roll material, the phenomenon of slippage between the core tube body 1 and the roll material during the winding process is avoided, thus ensuring the flatness and tightness of the roll material winding. By setting the annular reinforcing ring 11, the end structure of the core tube body 1 is effectively strengthened, preventing the end from being damaged or deformed during loading, unloading, transportation and use. At the same time, it can avoid friction damage between the end of the roll material and the end of the core tube body 1 during winding. The hot melt adhesive bonding method has advantages such as high bonding strength, good sealing performance, and strong weather resistance. It can ensure that the PE inner tube 2, reinforcing tube 3, wear-resistant tube 4 and annular reinforcing ring 11 do not delaminate or fall off during long-term use, thus ensuring the overall structural stability of the core tube body 1. In this embodiment, as Figures 1-5 As shown in the figure, the working process of the wear-resistant and tear-resistant composite PE core tube provided in this embodiment is as follows: A reinforcing layer tube 3 and a wear-resistant layer tube 4 are bonded to the outside of the PE inner tube 2 with hot melt adhesive. The reinforcing layer tube 3 is made of glass fiber and low-density polyethylene to form a tight braided structure, which can effectively disperse stress, prevent crack propagation, and withstand the tension of high-frequency winding and unwinding and external impact. The wear-resistant layer tube 4 is made of ultra-high molecular weight polyethylene. Ultra-high molecular weight polyethylene itself has excellent wear resistance. After the wear-resistant layer tube 4 is placed on the outside, the overall wear resistance of the core tube body 1 and the contact friction with equipment parts are significantly improved.

[0031] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A wear-resistant and tear-resistant composite PE core tube, characterized in that: The device includes a core tube body (1), which contains a PE inner tube (2), a reinforcing tube (3) is provided on the outside of the PE inner tube (2), and a wear-resistant tube (4) is provided on the outside of the reinforcing tube (3). The PE inner tube (2) is a high-density polyethylene layer, the reinforcing tube (3) is a blended braided layer of glass fiber and low-density polyethylene, and the wear-resistant tube (4) is an ultra-high molecular weight polyethylene layer.

2. The wear-resistant and tear-resistant composite PE core tube according to claim 1, characterized in that: The inner diameter of the core tube body (1) is 50-300mm and the wall thickness is 8-30mm. The thickness of the PE inner tube (2) accounts for 30%-50% of the total wall thickness, the thickness of the reinforcing tube (3) accounts for 20%-40% of the total wall thickness, and the thickness of the wear-resistant tube (4) accounts for 10%-30% of the total wall thickness.

3. The wear-resistant and tear-resistant composite PE core tube according to claim 1, characterized in that: The inner surface of the PE inner tube (2) is provided with a plurality of reinforcing rings (5), and a plurality of reinforcing ribs (6) are provided between the plurality of reinforcing rings (5), and the annular reinforcing rings (5) and the reinforcing ribs (6) are integrally formed with the PE inner tube (2).

4. The wear-resistant and tear-resistant composite PE core tube according to claim 1, characterized in that: The glass fiber in the reinforcing tube (3) has a mass fraction of 15-25%, and the glass fiber is chopped glass fiber with a length of 3-8 mm.

5. The wear-resistant and tear-resistant composite PE core tube according to claim 1, characterized in that: The reinforcing tube (3) is also uniformly distributed with polyester fiber mesh (7), the mesh number of the polyester fiber mesh (7) is 40-80 mesh, and the polyester fiber mesh (7) is interwoven and fused with the reinforcing tube (3).

6. The wear-resistant and tear-resistant composite PE core tube according to claim 1, characterized in that: The wear-resistant layer tube (4) is uniformly doped with silicon carbide wear-resistant particles (8) with a particle size of 50-100μm. The mass ratio of the silicon carbide wear-resistant particles (8) is 8-15%, and the thickness of the wear-resistant layer tube (4) is 3-6mm.

7. The wear-resistant and tear-resistant composite PE core tube according to claim 1, characterized in that: The outer surface of the wear-resistant tube (4) is coated with a polytetrafluoroethylene coating (9), the thickness of which is 0.1-0.3 mm.

8. The wear-resistant and tear-resistant composite PE core tube according to claim 1, characterized in that: The surface of the wear-resistant tube (4) is provided with several anti-slip patterns (10), the anti-slip patterns (10) are cross-shaped mesh structures, and the depth of the anti-slip patterns (10) is 0.3-1.0mm.

9. The wear-resistant and tear-resistant composite PE core tube according to claim 1, characterized in that: Both ends of the core tube body (1) are provided with annular reinforcing rings (11), which are made of rigid PVC material with a thickness of 3-8mm.

10. The wear-resistant and tear-resistant composite PE core tube according to claim 9, characterized in that: The PE inner tube (2), the reinforcing tube (3), the wear-resistant tube (4), and the annular reinforcing ring (11) are bonded and fixed together by a hot melt adhesive layer.

Images