SVT sheath wire with high mechanical performance
By using a multi-layered sheath structure and a specific material combination, the mechanical properties of SVT sheathed wires are improved, solving the problems of insufficient elongation and tensile strength of traditional sheathed wires, and achieving product safety compliance and quality improvement.
Patent Information
- Application Number
- CN202422759111.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-12
AI Technical Summary
The mechanical properties of the sheath of traditional SVT sheathed wires, including elongation and tensile strength, are poor, making it difficult to meet safety regulations, resulting in product failure.
The sheath adopts a multi-layer sheath structure and is made of PVC, PE, polyurethane and thermoplastic elastomer materials. By increasing the flow resistance and plasticizing pressure of the rubber material at the mold opening, the mechanical properties of the sheath are improved.
Without changing the sheath compound and thickness, the sheath's elongation is increased by 30% and tensile strength by 10%, ensuring that the product meets safety regulations and quality.
Smart Images
Figure CN223450592U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to SVT sheath electric wire technical field, specifically is a kind of high mechanical property's SVT sheath electric wire. BACKGROUND
[0002] SVT sheath electric wire can pass through UL VW-1 and CSA FT1 vertical flame resistance test, which means that it can quickly self-extinguish when burning, to ensure that it can reduce the spread of fire in case of fire, SVT sheath electric wire has environmental protection characteristics, meets environmental protection requirements. Its material and manufacturing process meet relevant environmental protection standards, suitable for occasions requiring environmental protection certification, sheath wire adds an outer sheath on the basis of electric wire, which makes it have excellent anti-interference ability, can effectively prevent signal interference, ensure transmission quality, sheath wire design makes it have excellent protection performance, can provide additional protection, prevent electric wire from being damaged or accident, suitable for occasions such as home decoration and industrial application, SVT sheath electric wire is suitable for places with high safety requirements such as home decoration, industrial application, children's room and washroom, can save space and beautify wall surface.
[0003] However, the traditional SVT sheath electric wire has the following shortcomings:
[0004] Structure specification Figure 2 , UL American standard SVT type electric wire due to small wire diameter, electric wire sheath skin is relatively thin, the mechanical properties of electric wire sheath after extrusion, elongation and tensile strength are poor, it is not easy to meet the safety requirements, and unqualified products appear. Utility model content
[0005] The utility model aims at providing a kind of high mechanical property's SVT sheath electric wire, to solve the problem that UL American standard SVT type electric wire due to small wire diameter, electric wire sheath skin is relatively thin, the mechanical properties of electric wire sheath after extrusion, elongation and tensile strength are poor, it is not easy to meet the safety requirements, and unqualified products appear in the above background.
[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of high mechanical property's SVT sheath electric wire, including sheath component, the sheath component includes sheath body and eye mould, the outside of eye mould is fixedly connected with the inside of sheath body, one side of eye mould is equipped with die mouth, one side of sheath body is equipped with glue inlet.
[0007] Preferably, the distance between the sheath body and the eye mould is 3.00mm.
[0008] Preferably, the diameter of the glue inlet is greater than the diameter of the die mouth.
[0009] Preferably, the sheath body comprises a first sheath shell, a second sheath shell, a third sheath shell, a fourth sheath shell and a fifth sheath shell, the inner side of the first sheath shell is fixedly connected with the outer side of the second sheath shell, the inner side of the second sheath shell is fixedly connected with the outer side of the third sheath shell, the inner side of the third sheath shell is fixedly connected with the outer side of the fourth sheath shell, the inner side of the fourth sheath shell is fixedly connected with the outer side of the fifth sheath shell, and the inner side of the fifth sheath shell is connected with the eye mold.
[0010] Preferably, the first sheath shell is made of PVC plastic particle material, the second sheath shell is made of PE plastic particle material, the third sheath shell is made of polyurethane material, the fourth sheath shell is made of thermoplastic elastomer material, and the fifth sheath shell is made of thermoplastic polyurethane material.
[0011] Compared with the prior art, the utility model has the beneficial effects that:
[0012] 1. Under the premise of ensuring the existing structure of the SVT type electric wire and the sheath material, the elongation and tensile strength of the sheath are improved, so that the product meets the safety requirements and quality;
[0013] 2. The elongation of the SVT type electric wire sheath is improved by 30% under the condition of the same thickness and the same material, and the tensile strength of the SVT type electric wire sheath is improved by 10% under the condition of the same thickness and the same material. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a sectional view of the utility model;
[0015] Figure 2 It is a sectional view of a traditional SVT sheath electric wire;
[0016] Figure 3 It is a schematic diagram of the architecture of the sheath body of the utility model.
[0017] In the drawing: 1, sheath assembly; 2, sheath body; 21, first sheath shell; 22, second sheath shell; 23, third sheath shell; 24, fourth sheath shell; 25, fifth sheath shell; 3, eye mold; 4, mold opening; 5, material inlet. DETAILED DESCRIPTION
[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model.
[0019] Please refer to Figures 1-3The utility model provides a kind of SVT sheath electric wire of high mechanical property, including sheath component 1, sheath component 1 includes sheath body 2 and eye mould 3, the outside of eye mould 3 is fixedly connected with the inside of sheath body 2, the side of eye mould 3 is equipped with die mouth 4, the side of sheath body 2 is equipped with rubber material inlet 5.
[0020] The distance between sheath body 2 and eye mould 3 is 3.00mm.
[0021] The diameter of rubber material inlet 5 is greater than the diameter of die mouth 4.
[0022] Sheath body 2 includes first sheath shell 21, second sheath shell 22, third sheath shell 23, fourth sheath shell 24 and fifth sheath shell 25, the inside of first sheath shell 21 is fixedly connected with the outside of second sheath shell 22, the inside of second sheath shell 22 is fixedly connected with the outside of third sheath shell 23, the inside of third sheath shell 23 is fixedly connected with the outside of fourth sheath shell 24, the inside of fourth sheath shell 24 is fixedly connected with the outside of fifth sheath shell 25, the inside of fifth sheath shell 25 is connected with eye mould 3.
[0023] First sheath shell 21 is made of PVC plastic particle material, second sheath shell 22 is made of PE plastic particle material, third sheath shell 23 is made of polyurethane material, fourth sheath shell 24 is made of thermoplastic elastomer material, and fifth sheath shell 25 is made of thermoplastic polyurethane material.
[0024] When the embodiment of the application is used: product external structure, sheath layer thickness size is not changed; during the sheath extrusion process of product, due to the length of die mouth 4 corridor section of eye mould 3 is increased, the flow resistance of rubber material in die mouth 4 is increased, so that the plasticizing pressure of rubber material at the forming place of die mouth 4 of eye mould 3 is increased, the fusion degree between rubber material molecules is increased, and finally the elongation and tensile strength and other mechanical properties of sheath layer after the extrusion of electric wire are improved.
[0025] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A SVT sheathed electric wire with high mechanical properties, comprising a sheath assembly (1), characterized in that: The sheath assembly (1) comprises a sheath body (2) and an eye mold (3); the outer side of the eye mold (3) is fixedly connected to the inner side of the sheath body (2); a mold opening (4) is provided on one side of the eye mold (3); and a rubber material inlet (5) is provided on one side of the sheath body (2).
2. The SVT sheathed electric wire with high mechanical properties according to claim 1, characterized in that: The distance between the sheath body (2) and the eye mold (3) is 3.00 mm.
3. The SVT sheathed electric wire with high mechanical properties according to claim 1, characterized in that: The diameter of the rubber material inlet (5) is greater than the diameter of the die opening (4).
4. The SVT sheathed electric wire with high mechanical properties according to claim 1, characterized in that: The sheath body (2) comprises a first sheath shell (21), a second sheath shell (22), a third sheath shell (23), a fourth sheath shell (24) and a fifth sheath shell (25), wherein the inner side of the first sheath shell (21) is fixedly connected to the outer side of the second sheath shell (22), the inner side of the second sheath shell (22) is fixedly connected to the outer side of the third sheath shell (23), the inner side of the third sheath shell (23) is fixedly connected to the outer side of the fourth sheath shell (24), the inner side of the fourth sheath shell (24) is fixedly connected to the outer side of the fifth sheath shell (25), and the inner side of the fifth sheath shell (25) is connected to the eye mold (3).
5. The SVT sheathed electric wire with high mechanical properties according to claim 4, characterized in that: The first sheath shell (21) is made of PVC plastic granular material, the second sheath shell (22) is made of PE plastic granular material, the third sheath shell (23) is made of polyurethane material, the fourth sheath shell (24) is made of thermoplastic elastomer material, and the fifth sheath shell (25) is made of thermoplastic polyurethane material.