A high tensile strength connecting wire and its processing and production system

Abstract

The invention discloses a high-tensile-resistance connecting wire and a processing and production system thereof, comprising a wire core, a shielding protective layer and an outer sheath, wherein the shielding protective layer is sleeved outside the wire core, a tensile-resistance core is arranged at the center of the wire core, the tensile-resistance core comprises an elastic layer which is in contact with the inner wall of the wire core, a low-elasticity layer is arranged between the shielding protective layer and the wire core, the outer sheath is wrapped and sleeved outside the shielding protective layer, the shielding protective layer comprises a composite aluminum foil layer, the composite aluminum foil layer comprises an aluminum foil layer, a glass fiber layer and a plastic layer, the aluminum foil layer is wrapped and attached to the outer wall of the low-elasticity layer, the glass fiber layer is wrapped and attached to the outer wall of the aluminum foil layer, and the plastic layer is wrapped around the outer wall of the glass fiber layer; the wire adopts a high-recovery elastic layer, so that the wire core still has space to shrink toward the wire core after being tightly wound, and has a good tensile-resistance effect; the low-elasticity layer can reduce wear and tear, and at the same time make the shielding protective layer fully attached to avoid easy damage; the composite aluminum foil layer has a relatively high elastic pulling ability as a whole, and the wire as a whole has a high tensile-resistance ability.

Description

Technical Field

[0001] The invention belongs to the technical field of wire processing, and in particular relates to a high-tensile strength connecting wire and a processing and production system thereof. Background Art

[0002] Wires are materials used for power, electrical and related transmission purposes. There is no strict boundary between "wires" and "cables". Usually, products with a small number of cores, small diameter and simple structure are called wires; and connecting wires are used in all aspects of social life, such as data cables for office computers, connecting cables for various components of electric vehicles, charging cables for mobile phones, and wires for household electrical appliances and lighting.

[0003] Connecting wires are generally thinner wires, such as connecting cables, data cables, charging cables, etc. Current connecting cables generally have wire cores inside, and the wire cores use wire cores with different functions depending on their uses. For example, data cables generally include a positive power line, a negative power line, a positive data line, and a negative data line. The wire core is generally wrapped with an aluminum foil shielding layer, and the aluminum foil shielding layer is also wrapped with a tinned copper wire braided layer to enhance the shielding effect. The outermost layer is wrapped with an outer skin for protection.

[0004] However, since the connecting wires are relatively thin and are usually connected to active ends such as keyboards, mice, mobile phones, etc., they are very susceptible to pulling. Since most of the current connecting wires do not have a tensile-resistant structure, the internal wire core and shielding layer are easily damaged after being pulled, causing the wires to lose their corresponding transmission function. As a result, the connecting wires on the market currently have a short lifespan and frequent replacement cycles. The few that have anti-drawing wires inside cannot improve the comprehensive tensile resistance of the connecting wires. Therefore, it is of great significance to provide a high-tensile-resistant connecting wire and a processing and production system thereof. Summary of the invention

[0005] The present invention provides a high-tensile-resistance connecting wire and a processing and production system thereof. The high-recovery elastic layer is adopted so that the wire core still has space to shrink toward the wire core after being tightly wound, and the tensile-resistance effect is good; the low-elasticity layer can reduce wear and tear, and at the same time make the shielding protective layer fully fit to avoid easy damage; the composite aluminum foil layer as a whole has a high elastic pulling ability, and the wire as a whole has a high tensile resistance, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-tensile-resistance connecting wire, comprising a wire core, a shielding protective layer and an outer sheath, wherein the shielding protective layer is sleeved outside the wire core, a tensile-resistance core is arranged at the center of the wire core, the tensile-resistance core comprises an elastic layer which is in contact with the inner wall of the wire core, a low-elasticity layer is arranged between the shielding protective layer and the wire core, the outer sheath is wrapped around the shielding protective layer, the shielding protective layer comprises a composite aluminum foil layer, the composite aluminum foil layer comprises an aluminum foil layer, a glass fiber layer and a plastic layer, the aluminum foil layer is wrapped around and adhered to the outer wall of the low-elasticity layer, the glass fiber layer is wrapped around and adhered to the outer wall of the aluminum foil layer, and the plastic layer is wrapped around the outer wall of the glass fiber layer.

[0007] Preferably, the wire cores are twisted together.

[0008] Preferably, the gap between the wire core and the low-elasticity layer is filled with a filler.

[0009] Preferably, the shielding protection layer further includes a tinned copper wire layer wrapped outside the composite aluminum foil layer, and the tinned copper wire layer is a tinned copper wire braided mesh tube structure.

[0010] Preferably, the tensile core comprises a tensile steel wire, the surface of the tensile steel wire is a rough structure with uneven surfaces, and the elastic layer is fused and adhered to the outer wall of the tensile steel wire.

[0011] Preferably, the surface where the aluminum foil layer contacts the glass fiber layer and the surface where the glass fiber layer contacts the plastic layer are fiber mesh protrusion structures.

[0012] A high tensile strength connecting wire processing and production system based on any one of the above items, comprising a core forming device, a wrapping device, a network management device and a wire forming device;

[0013] The core forming equipment includes a tensile core processing device and a core twisting device; the tensile core processing device includes a shot peening device for treating the surface of the tensile steel wire and a hot melt coating device for coating the tensile steel wire with an elastic layer;

[0014] The wrapping device comprises a low elastic layer wrapping device and a composite aluminum foil wrapping device, the composite aluminum foil wrapping device comprises a composite aluminum foil forming device, the composite aluminum foil forming device comprises a first pressing roller group and a second pressing roller group, the first pressing roller group comprises an upper pressing roller with a grid structure surface and a lower pressing roller with a smooth structure surface, the second pressing roller group comprises an upper pressing roller and a lower pressing roller with smooth structures on their surfaces;

[0015] The network management device comprises a weaving device for weaving tinned copper wires into a network tube and a sleeve device for sleeved outside the shielding protection layer;

[0016] The wire forming equipment includes a granulation device, a melting device, a shaping and coating mold, a cooling device and a traction device. The granulation device is used to produce plastic particles used for the outer sheath of the wire. The melting device is used to hot-melt the plastic particles. The shaping and coating mold is used to coat the hot-melted plastic outside the wire core and the shielding layer according to the designed size. The cooling device is used to cool the outer sheath, i.e. the wire, after coating. The traction device is used to pull the wire.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The high-recovery elastic layer is used so that the wire core still has space to shrink toward the wire core after being tightly wound, so that it shrinks inward after being pulled, offsetting the pulling force, allowing the tensile core to withstand the pulling force, with good tensile performance, while also improving the compression and bending resistance of the wire core.

[0019] 2. The low elasticity layer can prevent the wire core from directly contacting the shielding protective layer after pulling movement, scratching it and reducing wear. At the same time, the low elasticity layer can make the shielding protective layer fit fully to avoid easy damage.

[0020] 3. The composite aluminum foil layer has better overall elasticity and higher elastic pulling capacity.

[0021] 4. The elastic filling material and the elastic layer cooperate to provide internal and external elastic buffering effects on the wire core.

[0022] 5. The elastic layer and the tensile steel wire have a good bonding effect, and the elastic layer as a whole is not easily pulled away from the tensile steel wire.

[0023] 6. Provides a processing and production system for producing high-tensile strength connecting wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the cross-sectional structure of the electric wire of the present invention;

[0025] Figure 2 It is a schematic diagram of a partial side view of the electric wire structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the flattened top view structure of the aluminum foil layer of the present invention;

[0027] Figure 4 It is a schematic diagram of the flattened longitudinal cross-section structure of the aluminum foil layer and the glass fiber layer of the present invention;

[0028] Figure 5 It is a schematic diagram of the flattened longitudinal cross-section structure of the aluminum foil layer, the glass fiber layer, and the plastic layer of the present invention;

[0029] Figure 6 It is a schematic diagram of the structure of the processing and production system of the present invention;

[0030] Figure 7 It is a schematic diagram of the structure of the core forming equipment of the present invention;

[0031] Figure 8 It is a schematic diagram of the structure of the packaging device of the present invention;

[0032] Fig. 9 The first roller group structure of the present invention is schematically shown in FIG. Figure 1 ;

[0033] Fig.10 The first roller group structure of the present invention is schematically shown in FIG. Figure 2 ;

[0034] Fig.11 The second roller group structure of the present invention is schematically shown in FIG. Figure 1 ;

[0035] Fig.12 The second roller group structure of the present invention is schematically shown in FIG. Figure 2 ;

[0036] Fig.13 It is a schematic diagram of the structure of the network management device of the present invention;

[0037] Fig.14 It is a schematic diagram of the structure of the line forming equipment of the present invention.

[0038] In the figure: 1. wire core; 2. shielding protective layer; 3. outer skin; 4. tensile core; 5. elastic layer; 6. low elastic layer; 7. composite aluminum foil layer; 8. aluminum foil layer; 9. glass fiber layer; 10. plastic layer; 11. filler; 12. tinned copper wire layer; 13. tensile steel wire; 14. fiber grid protrusion structure; 15. core forming equipment; 16. wrapping equipment; 17. network management equipment; 18. wire forming equipment; 19. tensile core processing device; 20. wire core twisting device; 21. shot peening device; 22. hot melt coating device; 23. low elastic layer wrapping device; 24. composite aluminum foil wrapping device; 25. composite aluminum foil forming device; 26. first pressure roller group; 27. second pressure roller group; 28. weaving device; 29. ​​sleeve device; 30. granulation device; 31. melting device; 32. shaping coating mold; 33. cooling device; 34. traction device. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] See also Figure 1-5The present invention provides a high tensile strength connecting wire, comprising a wire core 1, a shielding protective layer 2 and an outer skin 3. The shielding protective layer 2 is sleeved outside the wire core 1. The shielding protective layer 2 can shield high-frequency electromagnetic waves, prevent high-frequency electromagnetic waves from contacting with the network wire conductor and then generating induced current, and reduce crosstalk; a tensile strength core 4 is arranged at the center of the wire core 1, so that when the wire is pulled, the tensile strength core 4 at the center can withstand the pulling force, thereby avoiding the situation where the wire core is broken after being pulled; the tensile strength core 4 includes an elastic layer 5 that is in contact with the inner wall of the wire core 1, and the elastic layer 5 adopts a high resilience The complex elastic material allows an elastic buffer to be set between the wire core 1 and the tensile core 4, so that the wire core 1 still has space to shrink toward the wire core after being wound tightly, so that it shrinks inward after being pulled, increases the longitudinal length at the force-bearing part, reduces the transverse diameter, and offsets the pulling force. Then the tensile core 4, which cannot increase the longitudinal length, withstands the pulling force, and adopts a high-recovery elastic material, so that it can be quickly reset after the pulling force disappears. Similarly, the compression and bending resistance of the wire core are also improved; a low-elastic layer 6 is provided between the shielding protective layer 2 and the wire core 1, and the low-elastic layer 6 can Avoid direct contact between the shielding protective layer 2 and the wire core 1, and avoid direct contact between the wire core 1 and the shielding protective layer 2 after pulling to scratch it. Since the inner layer of the shielding protective layer 2 is generally a thinner aluminum foil layer, it is very easy to be worn. At the same time, since there are irregular gaps on the outer surface of the wire core 1, the aluminum foil layer cannot be fully fitted with the surface of the wire core 1 after being wrapped, and the gaps are very easy to be damaged. The low elasticity layer 6 can make the shielding protective layer 2 fully fit and avoid easy damage; the outer skin 3 is wrapped outside the shielding protective layer 2, and the shielding protective layer 2 It includes a composite aluminum foil layer 7, which includes an aluminum foil layer 8, a glass fiber layer 9 and a plastic layer 10. The aluminum foil layer 8 is wrapped and attached to the outer wall of the low-elasticity layer 6, and the glass fiber layer 9 is wrapped and bonded to the outer wall of the aluminum foil layer 8. The glass fiber layer 9 can be bonded to the aluminum foil layer by glue, such as pressure-sensitive glue. Compared with aluminum foil, which has poor elasticity, it has better overall elasticity after composite and has higher elastic pulling ability. The plastic layer 10 is wrapped on the outer wall of the glass fiber layer 9, and the plastic layer 10 plays a protective role in the composite aluminum foil layer 7 as a whole.

[0041] like Figure 1 As shown, the wire cores 1 are twisted with each other; in this embodiment, the overall mechanical strength and durability of the wire core 1 are improved, and the tensile resistance is also enhanced.

[0042] like Figure 1 As shown, the gap between the wire core 1 and the low elastic layer 6 is filled with a filler 11; in the present embodiment, the filler 11 may be made of elastic filling material, which can cooperate with the elastic layer 5 to provide an internal and external elastic buffering effect for the wire core 1; at the same time, the filler 11 can also fill the gap in the outer wall of the wire core 1 to make the whole more rounded and improve the overall anti-extrusion capability.

[0043] like Figure 1-2As shown, the shielding protective layer 2 also includes a tinned copper wire layer 12 wrapped outside the composite aluminum foil layer 7, and the tinned copper wire layer 12 is a tinned copper wire braided mesh tube structure; in this embodiment, the tinned copper wire layer 12 enhances the shielding effect, and the braided mesh tube has good expansion and contraction capabilities.

[0044] like Figure 1-2 As shown, the tensile core 4 includes a tensile steel wire 13, the surface of the tensile steel wire 13 is a rough structure with uneven surfaces, and the elastic layer 5 is fused and adhered to the outer wall of the tensile steel wire 13; in this embodiment, the bonding effect of the elastic layer 5 and the tensile steel wire 13 is improved, so that the elastic layer 5 as a whole is not easily pulled away from the tensile steel wire 13.

[0045] like Figure 3-5 As shown, the surface where the aluminum foil layer 8 contacts the glass fiber layer 9 and the surface where the glass fiber layer 9 contacts the plastic layer 10 are fiber mesh protrusion structures 14; in this embodiment, the bonding ability between the aluminum foil layer 8 and the glass fiber layer 9 and between the glass fiber layer 9 and the plastic layer 10 is improved, and at the same time, when the aluminum foil layer 8 and the glass fiber layer 9 are pulled, the protrusions of the fiber mesh protrusion structures 14 can compensate for the increased diameter of the material after pulling, thereby reducing the pulling rupture.

[0046] See also Figure 6-14The present invention provides a high-tensile strength connecting wire processing and production system based on any of the above items, including a core forming device 15, a wrapping device 16, a network management device 17 and a wire forming device 18; the core forming device 15 includes a tensile core processing device 19 and a wire core twisting device 20; the tensile core processing device 19 includes a shot peening device 21 for treating the surface of the tensile steel wire and a hot melt coating device 22 for coating the tensile steel wire with an elastic layer, the roughness of the surface of the tensile steel wire is improved by shot peening, the hot melt coating device 22 can select a conventional hot melt coating device, the elastic layer is hot-melted and coated on the surface of the tensile steel wire, and then cooled to form, the wire core twisting device 20 is used to treat the tensile steel wire surface. 1 is twisted and wrapped outside the tensile core; the wrapping device 16 includes a low-elastic layer wrapping device 23 and a composite aluminum foil wrapping device 24, the wrapping device 23 wraps the flat low-elastic layer outside the wire core, and wraps the composite aluminum foil outside the low-elastic layer, preferably using a physical diffusion method for cold pressing, the composite aluminum foil wrapping device 24 includes a composite aluminum foil forming device 25, the composite aluminum foil forming device 25 includes a first pressing roller group 26 and a second pressing roller group 27, the first pressing roller group 26 includes an upper pressing roller with a grid structure on the surface and a lower pressing roller with a smooth structure on the surface, after the glass fiber layer is glued on the top of the aluminum foil layer, it can be pressed by the first pressing roller group 26, because the lower The surface of the pressing roller is smooth, and the surface of the upper pressing roller has a grid structure, so that after lamination, the lower surface of the aluminum foil layer is smooth and flat, and the upper surface is a fiber grid protrusion, the lower surface of the glass fiber layer is fitted with the aluminum foil layer, and the upper surface is a fiber grid protrusion; the second pressing roller group 27 includes an upper pressing roller and a lower pressing roller with smooth surfaces, so that they play a protective role after the plastic layer is pressed with the aluminum foil layer and the glass fiber layer, and the upper and lower surfaces are smooth and flat as a whole, so that when the flat composite aluminum foil layer is surrounded into a circular tube structure, the inside and outside are flat; the network management device 17 includes a weaving device 28 for weaving tinned copper wire into a network tube and a sleeve device 29 for sleeved outside the shielding protective layer, through The tinned copper wire is woven into a mesh tube through a braiding device to make it stretchable, and then it is sleeved on the outside of the shielding protective layer through a conventional sleeve device; the wire-forming equipment 18 includes a granulation device 30, a melting device 31, a shaping and coating mold 32, a cooling device 33 and a traction device 34, the granulation device 30 is used to produce plastic particles used for the outer sheath of the wire, the melting device 31 is used to hot-melt the plastic particles, the shaping and coating mold 32 is used to coat the hot-melted plastic on the wire core and the shielding layer according to the designed size, the cooling device 33 is used to cool the coated outer sheath, that is, the wire, and the traction device 34 is used to pull the wire and reel it up.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high tensile strength connecting wire, comprising a wire core (1), a shielding protective layer (2) and an outer sheath (3), characterized in that: The shielding protective layer (2) is sleeved outside the wire core (1); a tensile core (4) is provided at the center of the wire core (1); the tensile core (4) includes an elastic layer (5) in contact with the inner wall of the wire core (1); a low elastic layer (6) is provided between the shielding protective layer (2) and the wire core (1); the outer skin (3) is wrapped around the shielding protective layer (2); the shielding protective layer (2) includes a composite aluminum foil layer (7); the composite aluminum foil layer (7) includes an aluminum foil layer (8), The low-elasticity layer (6) comprises a glass fiber layer (9) and a plastic layer (10), wherein the aluminum foil layer (8) is wrapped and adhered to the outer wall of the low-elasticity layer (6), the glass fiber layer (9) is wrapped and adhered to the outer wall of the aluminum foil layer (8), and the plastic layer (10) is wrapped on the outer wall of the glass fiber layer (9); the tensile core (4) comprises a tensile steel wire (13), the surface of the tensile steel wire (13) is a rough structure with uneven surfaces, and the elastic layer (5) is fused and adhered to the outer wall of the tensile steel wire (13).

2. A high tensile strength connecting wire according to claim 1, characterized in that: The wire cores (1) are in a twisted structure.

3. A high tensile strength connecting wire according to claim 1, characterized in that: The gap between the wire core (1) and the low-elasticity layer (6) is filled with a filler (11).

4. A high tensile strength connecting wire according to claim 1, characterized in that: The shielding protection layer (2) further comprises a tinned copper wire layer (12) wrapped outside the composite aluminum foil layer (7), and the tinned copper wire layer (12) is a tinned copper wire braided mesh tube structure.

5. The high tensile strength connecting wire according to claim 1, characterized in that: The surface where the aluminum foil layer (8) contacts the glass fiber layer (9) and the surface where the glass fiber layer (9) contacts the plastic layer (10) are fiber mesh protrusion structures (14).

6. A processing and production system based on the high tensile strength connecting wire according to any one of claims 1 to 5, characterized in that: It includes core forming equipment (15), wrapping equipment (16), network management equipment (17) and line forming equipment (18); The core forming device (15) comprises a tensile core processing device (19) and a core twisting device (20); the tensile core processing device (19) comprises a shot peening device (21) for treating the surface of the tensile steel wire and a hot melt coating device (22) for coating the tensile steel wire with an elastic layer; The wrapping device (16) comprises a low elastic layer wrapping device (23) and a composite aluminum foil wrapping device (24), the composite aluminum foil wrapping device (24) comprises a composite aluminum foil forming device (25), the composite aluminum foil forming device (25) comprises a first pressing roller group (26) and a second pressing roller group (27), the first pressing roller group (26) comprises an upper pressing roller with a grid structure surface and a lower pressing roller with a smooth structure surface, the second pressing roller group (27) comprises an upper pressing roller and a lower pressing roller with smooth structures surfaces; The network management device (17) comprises a weaving device (28) for weaving tinned copper wires into a network tube and a sleeve device (29) for sleeved outside the shielding protection layer; The wire forming equipment (18) comprises a granulating device (30), a melting device (31), a shaping and coating mold (32), a cooling device (33) and a pulling device (34), wherein the granulating device (30) is used to produce plastic particles for the outer sheath of the wire, the melting device (31) is used to hot-melt the plastic particles, the shaping and coating mold (32) is used to coat the hot-melted plastic on the outside of the wire core and the shielding layer according to the designed size, the cooling device (33) is used to cool the outer sheath, i.e. the wire, after being coated, and the pulling device (34) is used to pull the wire.

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