A tensile netting filler cord

Abstract

The utility model discloses a kind of tensile resistance net-shaped filling ropes, it is related to cable processing technical field, the utility model includes filling rope body, filling rope body includes inner layer and outer layer, the mesh of inner layer to outer layer is gradient change, inner layer and outer layer are all woven by multiple rope core, spiral connecting rib is provided between inner layer and outer layer;Rope core includes inner core, and the outer periphery surface of inner core is wrapped with outer core, the aramid fiber of inner core, the polyurethane elastic fiber of outer core, the outer periphery surface of outer core is wrapped with protective layer;By aramid fiber as inner core can ensure core tensile capacity, by the outer core formed by polyurethane elastic fiber can guarantee certain elasticity, to give consideration to tensile and elastic demand, by the inner layer and outer layer of mesh that gradient change is set can enhance tensile stability, improve elastic deformation space, by connecting rib further improve the elastic recovery capacity of whole, to appear gap in cable inside after folding.

Description

Technical Field

[0001] This utility model relates to the field of cable processing technology, specifically to a tensile-resistant mesh filler rope. Background Technology

[0002] Mesh-filled rope is a functional filler material made primarily from high-molecular polymers through specific extrusion, stretching, or weaving processes, exhibiting a three-dimensional mesh-like hollow structure. Its core value lies in utilizing its unique mesh structure to simultaneously achieve multiple functions such as cushioning, sealing, support, and filtration while maintaining lightweight properties. It is widely used in various industrial fields including cables, pipes, packaging, and construction. The essence of mesh-filled rope is that it is a typical material where "structure determines function"—by changing the raw material formula, pore size, mesh density, and cross-sectional shape, it can be precisely matched to the needs of different scenarios. Its core structural features can be summarized in three points: mesh hollow structure, deformable toughness, and surface porosity.

[0003] Currently, mesh filler ropes are mainly used for filling optical cables and electrical cables to prevent gaps between the cores. The mesh filler ropes on the market are mainly designed with "low cost and easy processing" as the core design guideline. The material selection is concentrated on traditional polymer materials and natural fibers. The structure is mainly "simple weaving / winding". Specifically, they can be divided into three categories: polyethylene, polypropylene and natural fibers. This type of filler rope is difficult to achieve both high tensile strength and good elasticity at the same time. When the cable is folded, it will either break due to insufficient tensile strength or fail to fit the irregular space after folding due to poor elasticity, resulting in gaps inside and destroying the stability of the cable structure. Utility Model Content

[0004] The purpose of this invention is to provide a tensile-resistant mesh filling rope to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tensile-resistant mesh filling rope, comprising a filling rope body, the filling rope body comprising an inner layer and an outer layer, the mesh size of the inner layer to the outer layer changing in a gradient, both the inner layer and the outer layer being woven from multiple rope cores, and a spiral connecting rib provided between the inner layer and the outer layer; the rope core comprises an inner core, the outer periphery of the inner core being wrapped with an outer core, the inner core being aramid fiber, the outer core being polyurethane elastic fiber, and the outer periphery of the outer core being wrapped with a protective layer.

[0006] Preferably, the inner layer mesh size is 1mm × 1mm, and the outer layer mesh size is 2.5mm × 2.5mm.

[0007] Preferably, the diameter of the connecting rib is 0.3-0.4 mm.

[0008] Preferably, the mass ratio between the inner core and the outer core is 4:6, the inner core diameter is 1.5-2 mm, and the outer core thickness is 0.8-1.2 mm.

[0009] Preferably, the protective layer consists of an impermeable layer and a wear-resistant layer from the inside out.

[0010] Preferably, the thickness of the impermeable layer is 0.08-0.1 mm, and the impermeable layer coating is a mixture of 92-95 parts of hydroxyl-terminated polydimethylsiloxane, 3-5 parts of methyltriethoxysilane crosslinking agent, and 2-3 parts of nano-montmorillonite.

[0011] Preferably, the wear-resistant layer has a thickness of 0.1-0.12 mm, and the wear-resistant layer coating is composed of 77-85 parts of modified polyurethane, 10-15 parts of polyethylene, and 5-8 parts of chopped carbon fiber.

[0012] Preferably, the outer peripheral surface of the wear-resistant layer is provided with a spiral pattern.

[0013] In the above technical solution, the present invention provides a tensile-resistant mesh filling rope with the following beneficial effects: the aramid fiber as the inner core ensures the core tensile strength, the polyurethane elastic fiber outer core ensures a certain degree of elasticity, thus taking into account both tensile strength and elasticity requirements; the inner and outer layers with gradient mesh size enhance tensile stability and increase elastic deformation space; and the connecting ribs further enhance the overall elastic recovery ability, so that gaps appear inside the cable after folding. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model; Figure 2 This is a structural schematic diagram of the inner and outer layer cross-sections provided in an embodiment of the present utility model; Figure 3 A schematic diagram of the rope core provided in an embodiment of this utility model; Figure 4 This is a schematic diagram of the spiral pattern provided in an embodiment of the present utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Filler rope body; 2. Inner layer; 3. Outer layer; 4. Connecting rib; 5. Inner core; 6. Outer core; 7. Impermeable layer; 8. Wear-resistant layer; 9. Spiral pattern. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0018] Please see Figure 1-4 A tensile-resistant mesh-like filling rope, the technical solution proposed in this utility model includes a filling rope body 1, which includes an inner layer 2 and an outer layer 3. The mesh size of the inner layer 2 to the outer layer 3 changes in a gradient. Both the inner layer 2 and the outer layer 3 are woven from multiple rope cores, and a spiral connecting rib 4 is provided between the inner layer 2 and the outer layer 3. The rope core includes an inner core 5, and an outer core 6 is wrapped around the outer periphery of the inner core 5. The inner core 5 is made of aramid fiber, and the outer core 6 is made of polyurethane elastic fiber. A protective layer is wrapped around the outer periphery of the outer core 6. The filling rope body 1 is mesh-like and is woven using a three-dimensional weaving process. The mesh size changes in a gradient from the inner layer 2 to the outer layer 3. The inner layer 2 enhances tensile stability, while the outer layer 3 increases the elastic deformation space. The spiral connecting ribs 4 woven between the inner layer 2 and the outer layer 3 further enhance the elastic recovery ability of the filling rope body 1. A set of connecting ribs 4 is set every 5 cm. The inner core 5 is made of high-modulus aramid fiber to ensure the core tensile strength, while the high-elasticity polyurethane elastic fiber outer core 6 wrapped around the inner core 5 provides elasticity, thus forming a rigid tensile and elastic dual-core structure that takes into account both tensile and elastic requirements.

[0019] Specifically, the inner layer has two mesh openings with a size of 1mm × 1mm, and the outer layer has three mesh openings with a size of 2.5mm × 2.5mm. The inner layer's 21mm × 1mm small mesh opening design tightly binds the aramid fibers. The higher weave density of the small mesh openings firmly fixes the aramid fiber bundles within the mesh structure, preventing the aramid fibers from shifting or piling up locally when the cable is pulled. This ensures that the tension is evenly distributed to each aramid fiber, while also improving structural rigidity. The denser weave of the small mesh openings enhances the inner... The inner layer 2 has good resistance to deformation. When the cable is squeezed or folded, the inner layer 2 is not prone to irregular deformation, providing a stable "support skeleton" for the elastic deformation of the outer layer 3, and preventing the overall structure from collapsing. The large mesh of the outer layer 32.5mm×2.5mm can retain sufficient deformation margin and reduce elastic loss. The large mesh structure has less "binding force" on the elastic fibers. During the elastic recovery process after each fold, the fibers are subjected to lower mesh friction resistance, avoiding fatigue of the elastic fibers due to excessive mesh and "springback failure".

[0020] Specifically, the diameter of the connecting rib 4 is 0.3-0.4mm; the spiral connecting rib 4 can enhance the interlayer bonding force, prevent the inner layer 2 from separating from the outer layer 3, ensure the long-term stability of the tensile strength and elasticity of the filling rope body 1, and also provide additional rebound assistance through spiral contraction.

[0021] Specifically, the mass ratio between the inner core 5 and the outer core 6 is 4:6. The inner core 5 has a diameter of 1.5-2mm, and the outer core 6 has a thickness of 0.8-1.2mm. The aramid fiber material of the inner core 5 is highly rigid and has a low deformation rate, while the polyurethane elastic material of the outer core 6 is highly flexible and has a high deformation rate. Directly mixing the two can easily lead to problems such as "rigidity restraining flexibility" or "flexibility weakening rigidity." However, the 4:6 mass ratio, through the structure of "rigid support of the inner core 5 + flexible deformation of the outer core 6," allows the aramid inner core 5 to dominate the tensile strength and the polyurethane outer core 6 to dominate the elasticity, without interfering with each other. When stretched, the inner core 5 is stressed, and the outer core 6 deforms slightly with the stretching but does not affect the tensile strength. When folded, the outer core 6 deforms, while the inner core 5 maintains rigid support.

[0022] Specifically, the protective layer consists of an impermeable layer 7 and an abrasion-resistant layer 8 from the inside out. The impermeable layer 7 forms a physical impermeable barrier to block the path of water penetration, while the abrasion-resistant layer 8 solves the problem of wear when the cable is folded.

[0023] Specifically, the thickness of the seepage-proof layer 7 is 0.08-0.1mm. The coating of the seepage-proof layer 7 is composed of 92-95 parts of hydroxyl-terminated polydimethylsiloxane, 3-5 parts of methyltriethoxysilane crosslinking agent, and 2-3 parts of nano-montmorillonite. Using highly elastic hydroxyl-terminated polydimethylsiloxane PDMS as the base material, 3%-5% of methyltriethoxysilane crosslinking agent is added to improve the adhesion between the coating and the polyurethane elastic fibers of the rope. At the same time, 2%-3% of nano-montmorillonite is added to form a physical seepage barrier using its layered structure, blocking the water penetration path and taking into account both elastic buffering and basic waterproofing functions.

[0024] Specifically, the wear-resistant layer 8 has a thickness of 0.1-0.12mm. The wear-resistant layer 8 coating is composed of 77-85 parts of modified polyurethane, 10-15 parts of polyethylene, and 5-8 parts of short-cut carbon fiber. The wear-resistant layer 8 coating uses modified polyurethane as the matrix, mixes in 10%-15% of ultra-high molecular weight polyethylene micro powder, and adds 5%-8% of short-cut carbon fiber with a length of 0.1-0.2mm to form a "micro powder + fiber" dual wear-resistant skeleton. It is hot-pressed at 120-130℃ to make the coating hardness reach Shore D65-70 and the coefficient of friction drop to below 0.1, solving the wear problem when the cable is folded, while retaining 30%-35% of elastic deformation capacity without affecting the overall buffering effect.

[0025] Specifically, the outer circumferential surface of the wear-resistant layer 8 is provided with spiral patterns 9; spiral raised patterns are provided on the surface of the wear-resistant layer 8 of the rope core, with a raised stiffness of 0.3-0.5mm. During the production process of the cable outer sheath, when the sheath material is in a molten state, the filler rope is embedded simultaneously, so that the molten sheath material and the raised patterns of the filler rope are tightly combined. After cooling, a mechanical interlocking structure is formed to prevent the filler rope from sliding relative to the cable outer sheath.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tensile-resistant mesh-like filling rope, comprising a filling rope body (1), characterized in that, The filling rope body (1) includes an inner layer (2) and an outer layer (3). The mesh size of the inner layer (2) and the outer layer (3) changes in a gradient. Both the inner layer (2) and the outer layer (3) are woven from multiple rope cores. A spiral connecting rib (4) is provided between the inner layer (2) and the outer layer (3). The rope core includes an inner core (5), and an outer core (6) is wrapped around the outer periphery of the inner core (5). The inner core (5) is made of aramid fiber, and the outer core (6) is made of polyurethane elastic fiber. A protective layer is wrapped around the outer periphery of the outer core (6).

2. The tensile-resistant mesh filling rope according to claim 1, characterized in that, The inner layer (2) has a mesh size of 1mm×1mm, and the outer layer (3) has a mesh size of 2.5mm×2.5mm.

3. The tensile-strength mesh-like filling rope according to claim 1, characterized in that, The diameter of the connecting rib (4) is 0.3-0.4 mm.

4. The tensile-resistant mesh filling rope according to claim 1, characterized in that, The mass ratio between the inner core (5) and the outer core (6) is 4:

6. The inner core (5) has a diameter of 1.5-2 mm, and the outer core (6) has a thickness of 0.8-1.2 mm.

5. The tensile-resistant mesh filling rope according to claim 1, characterized in that, The protective layer consists of an impermeable layer (7) and a wear-resistant layer (8) from the inside out.

6. The tensile-resistant mesh-like filling rope according to claim 5, characterized in that, The thickness of the impermeable layer (7) is 0.08-0.1 mm.

7. The tensile-resistant mesh filling rope according to claim 5, characterized in that, The wear-resistant layer (8) has a thickness of 0.1-0.12 mm.

8. The tensile-resistant mesh filling rope according to claim 5, characterized in that, The wear-resistant layer (8) has a spiral pattern (9) on its outer circumference.

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