Spring cable and production equipment

Abstract

The utility model relates to a spring cable and production equipment. The spring cable comprises a cable core, a shielding layer, a filling layer and a sheath layer. The cable core comprises a plurality of stranded core wires, the core wires comprise a plurality of stranded twisted-pair wires, and the twisted-pair wire cores are coated with a first shielding layer; each twisted pair wire comprises two insulated wires which are twisted with each other, and each insulated wire comprises a conductor formed by a plurality of twisted tinned copper wires and copper foil wires; the second shielding layer wraps the cable core. The filling layer is extruded outside the cable core and fills a gap between the cable core and the second shielding layer; and the sheath layer is coated outside the second shielding layer. According to the spring cable, the composition and the structure of the conductors are improved, the tensile strength and the bending resistance of each core wire forming the cable core are improved in cooperation with a stranding mode of stranding in strands and then integrally stranding, meanwhile, the filling layer is extruded outside the cable core to play a role in filling and supporting, the stability of the overall structure of the cable can be ensured, and the service life of the cable is prolonged. And the tensile property of the cable is further improved, so that the service life of the cable is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable technical field especially is a spring cable and production equipment. BACKGROUND

[0002] Spring cable, also known as spiral cable or elastic cable, is a kind of device connecting line that works by stretchability, which can stretch and contract according to needs, has good anti-dragging and anti-collapse properties, and is widely used in various movable devices such as automobiles, machines and instruments.

[0003] The spring cable is frequently stretched and contracted during use, and the existing spring cable is prone to fatigue and breakage after long-term use, has a short service life and affects the normal operation of the equipment. UTILITY MODEL CONTENT

[0004] Therefore, the utility model solves the technical problems that the existing spring cable is frequently stretched and contracted during use, is prone to fatigue and breakage after long-term use, has a short service life and affects the normal operation of the equipment.

[0005] To solve the above technical problems, the utility model provides a spring cable, which comprises,

[0006] The cable core comprises a plurality of core wires, and the plurality of core wires are stranded into a cable core. The core wire comprises a plurality of twisted pairs of wires, and the plurality of twisted pairs of wires are twisted into a twisted pair wire core. The twisted pair wire core is covered with a first shielding layer. Each twisted pair of wires comprises two twisted insulated wires. The conductor comprises a plurality of twisted tinned copper wires and copper foil wires.

[0007] The second shielding layer covers the outside of the cable core.

[0008] The filling layer is extruded on the outside of the cable core and fills the gap between the cable core and the second shielding layer. The filling layer further comprises a plurality of reinforcing members.

[0009] The sheath layer covers the outside of the second shielding layer.

[0010] In one embodiment of the utility model, the first shielding layer and the second shielding layer are both made of a plurality of copper foil wires.

[0011] In one embodiment of the utility model, the copper foil wire comprises an aramid wire core and a strip-shaped copper foil wrapped around the aramid wire core.

[0012] In one embodiment of the utility model, the first shielding layer and the pair of stranded cores are filled with a plurality of fillers, and the plurality of fillers are centrally symmetrically arranged.

[0013] In one embodiment of the utility model, the plurality of reinforcing members are centrally symmetrically arranged.

[0014] In one embodiment of the utility model, the reinforcing member is made of aramid fiber.

[0015] In one embodiment of the utility model, the core wire is provided with three core wires, and each core wire comprises three groups of the pair of stranded wires.

[0016] In one embodiment of the utility model, the filler layer and the insulating layer are made of thermoplastic elastomer material.

[0017] In one embodiment of the utility model, the sheath layer is made of thermoplastic polyurethane elastomer material.

[0018] A production equipment comprises the spring cable according to any one of the preceding embodiments.

[0019] The above technical scheme of the utility model has the following advantages compared with the prior art.

[0020] The utility model discloses a kind of spring cable and production equipment, including cable core, second shielding layer, filler layer and sheath layer;Cable core includes a plurality of twisted core wires, and core wire includes a plurality of twisted pair of stranded wires, and the pair of stranded wire core is covered with first shielding layer;The pair of stranded wire includes two mutually twisted insulated wires, and insulated wire includes the conductor consisting of a plurality of twisted tinned copper wire and copper foil wire;Second shielding layer is covered outside cable core;Filler layer is extruded and packed outside cable core and fills the gap between cable core and second shielding layer, and still be provided with a plurality of reinforcing members in filler layer;Sheath layer is covered outside second shielding layer.The utility model discloses a kind of spring cable, by improving the composition and structure of conductor, and cooperate the twisted mode of partial strand twisting and then overall twisting, improve the tensile strength and bending performance of each core wire of the cable core, while extruding filler layer outside cable core plays the role of filling and supporting, can ensure the stability of cable overall structure, further improve the tensile performance of cable, so as to improve the service life of cable. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the content of the utility model more easily be clearly understood, the utility model is further explained in detail in the following according to specific embodiment of the utility model and combining with drawings, wherein

[0022] Figure 1 It is the schematic diagram of the overall structure of the spring cable of preferred embodiment of the utility model;

[0023] Figure 2is a structure schematic view of the cable core of the spring cable of the preferred embodiment of the utility model;

[0024] Figure 3 is a structure schematic view of the pair-twisted wire of the spring cable of the preferred embodiment of the utility model.

[0025] The description of the figures of the utility model is as follows: 1, cable core; 11, pair-twisted wire; 111, conductor; 112, insulation layer; 12, first shielding layer; 13, filler; 2, second shielding layer; 3, filler layer; 31, reinforcing member; 4, sheath layer. Specific embodiments

[0026] The utility model will be further described below in combination with the figures and specific embodiments, so that the skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model. Embodiment one

[0027] Referring to Figure 1 , Figure 2 and Figure 3 , the utility model discloses a spring cable, comprising,

[0028] Cable core 1, cable core 1 includes multiple core wires, and multiple core wires are twisted into cable core 1, and the core wire includes multiple pair-twisted wires 11, and multiple pair-twisted wires 11 are twisted into pair-twisted wire core, and the pair-twisted wire core is covered with first shielding layer 12;Pair-twisted wire 11 includes two mutually twisted insulated wires, and the insulated wire includes conductor 111 and the insulation layer 112 covered in the conductor 111, and the conductor 111 includes multiple mutually twisted tinned copper wires and copper foil wires;

[0029] Second shielding layer 2, second shielding layer 2 is covered in cable core 1 outside;

[0030] Filler layer 3, filler layer 3 is extruded in cable core 1 outside and fills the gap between cable core 1 and second shielding layer 2, and still be provided with multiple reinforcing members 31 in filler layer 3;

[0031] Sheath layer 4, sheath layer 4 is covered in second shielding layer 2 outside.

[0032] Specifically, the conductor 111 is composed of extremely fine tinned copper wires and copper foil wires. The conductor of this structure has better softness and tensile strength than ordinary conductors. In addition, the stranded mode of the sub-strands and the overall strands further improves the tensile strength and bending resistance of the core wire. Meanwhile, according to the actual size of the gap between the cable core 1 and the second shielding layer 2 after the second shielding layer 2 is wrapped on the cable core 1, the filler layer 3 is extruded and wrapped outside the cable core 1. The filler layer 3 can play a filling and supporting role, so that the internal structure of the cable can remain relatively stable during bending and movement of the cable, thereby improving the overall strength and tensile resistance of the cable, which is beneficial to prolong the service life of the cable and reduce the use cost.

[0033] Further, the first shielding layer 12 and the second shielding layer 2 are both composed of a plurality of copper foil wires. Specifically, the first shielding layer 12 as the inner shielding layer of the cable can prevent signal interference between the internal cores of the cable. The second shielding layer 2 as the outer shielding layer of the cable can prevent external electromagnetic signals from interfering with the cable. In addition, the first shielding layer 12 and the second shielding layer 2 composed of a plurality of copper foil wires can also play a mechanical protection role and improve the tensile resistance of the cable, which is beneficial to prolong the service life of the cable.

[0034] Further, the copper foil wire includes an aramid wire core and a strip-shaped copper foil wrapped around the aramid wire core. Specifically, the copper foil wire is made by uniformly wrapping the strip-shaped copper foil around the aramid wire core after the copper round wire is injection molded into the strip-shaped copper foil. The copper foil wire retains the original good conductivity of copper and has excellent flexibility and tensile strength. Therefore, the conductor 111 composed of tinned copper wires and copper foil wires has good conductivity, sufficient tensile strength and flexibility, which is beneficial to prolong the service life of the entire cable.

[0035] Referring to FIGS. 1-3, Figure 1 and Figure 2 Further, a plurality of filler pieces 13 are filled between the first shielding layer 12 and the paired core wires, and the plurality of filler pieces 13 are centrally symmetrically arranged. By arranging the filler pieces 13, the relative positions between the units inside the core wire remain stable, which ensures the roundness of the core wire and improves the tensile strength and bending resistance of the core wire.

[0036] Further, the plurality of reinforcing pieces 31 are centrally symmetrically arranged.

[0037] Further, the reinforcing piece 31 is made of aramid wire. Specifically, adding aramid wire during the extrusion of the filler layer 3 can further improve the tensile strength of the filler layer 3 and the entire cable, which is beneficial to prolong the service life of the cable. It can be envisaged that when the reinforcing piece 31 is arranged, the centrally symmetric arrangement of the plurality of reinforcing pieces 31 can improve the uniformity of the stress on the filler layer 3, thereby further improving the tensile strength of the filler layer 3 and the entire cable.

[0038] Further, the core wire is provided with three, and each core wire includes three groups of twisted pairs 11. Specifically, the core wire and the twisted pair are arranged in an equilateral triangle, and the whole twisted structure can have better stability, which is conducive to improving the overall strength and bending resistance of the cable.

[0039] Further, the filler layer 3 and the insulating layer 112 are both made of thermoplastic elastomer material. Specifically, the thermoplastic elastomer material has excellent elasticity and flexibility, and can be deformed in a large range and quickly recover to the original state after the external force is removed. This feature makes it excellent in application occasions requiring deformation resistance. Moreover, the thermoplastic elastomer material has excellent chemical resistance and heat resistance.

[0040] Further, the sheath layer 4 is made of thermoplastic polyurethane elastomer material. Specifically, the thermoplastic polyurethane elastomer material has good wear resistance and good elasticity, and can be used for a long time without damage under various climate conditions. It not only can protect the internal structure of the cable, but also is conducive to the softness and tensile properties of the cable as a whole.

[0041] The spring cable of the utility model, by improving the composition and structure of the conductor 111, and cooperating with the twisting mode of the partial twisting and the overall twisting, improves the tensile strength and bending resistance of each core wire of the cable core 1, and extrudes the filler layer 3 outside the cable core 1 to play the role of filling and supporting, can ensure the stability of the overall structure of the cable, further improve the tensile properties of the cable, thereby prolonging the service life of the cable. Example two

[0042] The utility model discloses still a kind of production equipment, including the spring cable as in example one.

[0043] Obviously, the above-described embodiments are merely examples for clearly illustrating, and not limit the implementation mode. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can be made. Here, it is unnecessary and impossible to exhaust all implementation modes. The obvious changes or variations derived therefrom are still within the protection scope of the utility model creation.

Claims

1. A spring cable, characterized in that The spring cable comprises: a cable core comprising a plurality of core wires, the plurality of core wires being twisted into the cable core, each of the core wires comprising a plurality of pairs of twisted wires, the plurality of pairs of twisted wires being twisted into a pair of twisted wire cores, and the pair of twisted wire cores being covered by a first shielding layer; each of the pairs of twisted wires comprises two twisted insulated wires, each of the insulated wires comprising a conductor and an insulating layer covering the conductor, and the conductor comprising a plurality of twisted tinned copper wires and copper foil wires; a second shielding layer covering the cable core; a filling layer extruded on the cable core and filling the gap between the cable core and the second shielding layer, and a plurality of reinforcing members being arranged in the filling layer; a sheath layer covering the second shielding layer.

2. The spring cable of claim 1, wherein: The first shielding layer and the second shielding layer are both formed by loosely twisting a plurality of copper foil wires.

3. The spring cable of claim 1, wherein: The copper foil wire comprises an aramid wire core and a strip-shaped copper foil wrapped on the aramid wire core.

4. The spring cable of claim 1, wherein: The first shielding layer and the pair of twisted wire cores are filled with a plurality of filling members, and the plurality of filling members are arranged in a central symmetry.

5. The spring cable of claim 1, wherein: The plurality of reinforcing members are arranged in a central symmetry.

6. The spring cable of claim 5, wherein: The reinforcing member is an aramid wire.

7. The spring cable of claim 1, wherein: The core wires are arranged in three, and each of the core wires comprises three groups of the pairs of twisted wires.

8. The spring cable of claim 1, wherein: The filling layer and the insulating layer are both made of thermoplastic elastomer material.

9. The spring cable of claim 1, wherein: The sheath layer is made of thermoplastic polyurethane elastomer material.

10. A production apparatus characterized by comprising: The spring cable comprises the spring cable according to any one of claims 1-9.

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