CN223486712U - Cables for ultra-long travel drag chains - Google Patents

Abstract

The utility model discloses an electric wire for an ultra-long travel drag chain, which comprises a core wire, an inner protective layer, a conductive cloth winding layer, a shielding layer and an outer protective layer, wherein the centers of a plurality of core wires are filled with a meshed foaming elastomer plastic, the plurality of core wires are stranded in the same layer outside the meshed foaming elastomer plastic, the soft elastomer plastic forms the inner protective layer outside the stranded core wires in a pressurizing extrusion mode, the conductive cloth winding layer is formed outside the inner protective layer by winding conductive cloth, the shielding layer is formed outside the conductive cloth winding layer in a braiding mode, and the outer protective layer with high strength is tightly covered outside the shielding layer.

Description

Wire for ultra-long travel drag chain

Technical Field

The utility model relates to an electric wire, in particular to an electric wire for an ultra-long travel drag chain.

Background

Industry is increasingly automated, and along with continuous upgrading of flexible automatic production lines, a plurality of adjustable machine tools (mostly special machine tools) are gradually connected together, and the production lines are matched with automatic conveying devices. In the process of connecting a plurality of machine tools, an ultra-long control cable is required, and the length of the cable can reach hundreds of meters according to the number of the connected machine tools. These cables are carried in the drag chain with both control and signal lines. The requirements of such lengths of drag chain cable for its flex resistance characteristics are quite different from those of conventional short drag chains. Many conventional drag chain cables present various problems in such use environments, which cannot be satisfied.

Disclosure of utility model

In order to overcome the defects, the utility model provides an electric wire for an ultra-long travel drag chain, which has strong extrusion resistance, impact resistance, torsion resistance, interference resistance and abrasion resistance and is not easy to damage after long-term use.

The technical scheme includes that the electric wire for the ultra-long travel drag chain comprises core wires, an inner protection layer, a conductive cloth winding layer, a shielding layer and an outer protection layer, wherein the centers of a plurality of core wires are filled with meshed foamed elastomer plastics, the plurality of core wires are stranded in the same layer outside the meshed foamed elastomer plastics, the soft elastomer plastics form the inner protection layer outside the stranded core wires in a pressurizing extrusion mode, the conductive cloth winding layer is formed outside the inner protection layer by winding conductive cloth, the shielding layer is formed outside the conductive cloth winding layer in a braiding mode, and the outer protection layer with high strength is tightly covered outside the shielding layer.

As a further improvement of the utility model, a layer of teflon tape layer is formed on the outer side of the shielding layer in a wrapping mode, and the outer protective layer is coated on the outer side of the teflon tape layer.

As a further improvement of the utility model, the outer protective layer comprises a first high-strength polyurethane protective layer extruded outside the teflon wrapping layer, a protective net arranged outside the first high-strength polyurethane protective layer and a second high-strength polyurethane protective layer extruded outside the protective net, and the first high-strength polyurethane protective layer and the second high-strength polyurethane protective layer are tightly adhered together.

As a further development of the utility model, the protective net is formed from ballistic filaments by braiding.

As a further improvement of the utility model, the core wire comprises a conductor and an insulating sheath, the conductor is formed by twisting a plurality of copper wires in a small pitch mode, and the crosslinked thermosetting material is extruded outside the conductor in a pressurizing way to form the insulating sheath of the core wire.

The utility model further improves the silver-plated oxygen-free copper wire, wherein the copper wire of the core wire of the power core is 0.05-0.10 mm, and the copper wire of the core wire of the signal core is 0.05-0.08 mm.

As a further improvement of the present utility model, the copper wire of the core wire as the power core is formed into a conductor by multiple layering stranding.

As a further improvement of the utility model, at least two core wires are pre-twisted to form a pre-twisted layer cable structure, and a plurality of pre-twisted layer cable structures are twisted into a cable in the same layer.

As a further improvement of the utility model, the pre-twisted layer cable structure is 4 core wires twisted, 5 core wires twisted or other number of multiple core wires twisted.

As a further improvement of the present utility model, the conductive cloth is a plated high strength nonwoven fabric.

The beneficial effects of the utility model are as follows: the utility model selects conductors of different materials to twist according to the functions of the core wires, effectively provides bending resistance of the core wires, effectively improves the signal transmission capacity of the cable, adopts cross-linked thermosetting materials as insulating sheaths of the core wires, effectively improves the anti-extrusion capacity of the cable core wires, ensures that all the core wires are structurally distributed on the same layer when the core wires are pre-twisted, avoids mutual extrusion of the core wires, fills reticular expanded elastomer plastics in the centers of the core wires, ensures the structural stability of the whole wire, can lead the whole wire to generate certain elastic buffer when extruding the center in the bending process, adopts soft elastomer plastics as an inner protective layer, leads the elasticity to generate pressure on all the core wires, further ensures that the whole wire arrangement structure is stable, does not generate running positions among the core wires, electroplates non-woven fabrics to form conductive cloth, can effectively improve the anti-interference capacity of the whole cable outside the inner protective layer, is matched with a shielding layer on the outer side of the cable, further improves the anti-interference performance of the whole cable, can effectively prevent the shielding layer from being scattered, ensures that the shielding layer is protected, simultaneously reduces the shielding layer from being damaged by the shielding layer, ensures that the shielding layer is not damaged by the first protective layer and the polyurethane layer is not damaged by the random stretching, and the second protective layer is not stressed by the polyurethane layer, and the high tensile strength can not be formed in the middle of the protective layer, and the protective layer can not be twisted, and the tensile strength of the polyurethane protective layer can not be deformed, and the tensile strength of the protective layer can be stretched and the protective layer can be stretched in the middle layer can be stretched.

Drawings

FIG. 1 is a schematic diagram of a cross-sectional structure of a cable of the present utility model;

FIG. 2 is a schematic diagram of a cross-sectional structure of a core wire of the present utility model;

fig. 3 is a schematic diagram of a cross-sectional structure of a conductor as a power core according to the present utility model.

Detailed Description

The embodiment of the electric wire for the ultra-long travel drag chain comprises a core wire 1, an inner protection layer 2, a conductive cloth winding layer 3, a shielding layer 4 and an outer protection layer, wherein the centers of a plurality of core wires 1 are filled with meshed foaming elastomer plastics 5, the plurality of core wires 1 are stranded in the same layer outside the meshed foaming elastomer plastics 5, the soft elastomer plastics 5 form the inner protection layer 2 outside the stranded core wire 1 in a pressurizing extrusion mode, the outer side of the inner protection layer 2 is wrapped with conductive cloth to form the conductive cloth winding layer 3, the outer side of the conductive cloth winding layer 3 forms a shielding layer 4 in a braiding mode, and the outer side of the shielding layer 4 is tightly wrapped with the high-strength outer protection layer.

In the cabling process, the net-shaped foaming elastomer plastic 5 is filled in the center of the core wire 1, then the core wire 1 is stranded in the same layer, the net-shaped foaming elastomer plastic 5 can ensure the structural stability of the whole wire rod, and the whole wire rod can have certain elastic buffering when being extruded in the center in the bending process. After the whole wire is twisted, a special soft elastomer plastic 5 inner protective layer 2 with high hardness and strength is extruded under pressure. The inner protective layer 2 ensures that all the core wires 1 of the whole electric wire are arranged in a stable structure through pressure, and the running positions among the core wires can not occur. The conductive cloth winding layer 3 is wrapped outside the inner protective layer 2, so that the anti-interference capability of the cable can be effectively improved. The outer layer of the conductive cloth is braided and shielded, so that the anti-interference capability of the whole cable is further improved, and the outer protective layer is optimally made of wear-resistant and high-strength materials and is used for protecting the internal structure.

The shielding layer 4 is formed with a layer of teflon tape layer outside by wrapping, and the outer protective layer is coated on the outer side of the teflon tape layer. The shielding layer 4 is wrapped with a layer of teflon wrapping tape, so that the shielding layer 4 can be prevented from being scattered, abrasion is reduced, and the shielding layer 4 is protected from being damaged.

The outer protective layer comprises a first layer of high-strength polyurethane sheath layer 7 extruded outside the Teflon wrapping tape layer, a protection net 8 arranged outside the first layer of high-strength polyurethane sheath layer 7 and a second layer of high-strength polyurethane sheath layer 9 extruded outside the protection net 8, and the first layer of high-strength polyurethane sheath layer 7 and the second layer of high-strength polyurethane sheath layer 9 are tightly adhered together.

A first high-strength polyurethane sheath layer 7 is extruded outside the teflon tape, a protection net 8 is woven by using bulletproof wires outside the first high-strength polyurethane sheath layer 7, and a second high-strength polyurethane sheath layer 9 is extruded. The two high-strength polyurethane sheath layers are tightly adhered together and cannot be torn. The outer sheath can greatly improve the tensile and anti-twisting capabilities of the cable outer sheath, the sheath can not generate displacement and stretching in the long-time movement process of the randomizer, and the whole cable can not have adverse problems such as torsion in an ultra-long drag chain.

The protection net 8 is formed by weaving bulletproof wires.

The core wire 1 comprises a conductor 11 and an insulating sheath 12, wherein the conductor 11 is formed by twisting a plurality of copper wires 111 in a small pitch mode, and a crosslinked thermosetting material is extruded outside the conductor 11 in a pressurizing mode to form the insulating sheath 12 of the core wire 1. The insulating sheath 12 uses a special cross-linked thermosetting material that has a higher strength and resistance to extrusion than the thermoplastic elastomer. In the cable in the ultra-long drag chain, the inner core wire 1 of the cable is subjected to great extrusion stress, and the extrusion resistance of the cable core wire 1 can be effectively improved by adopting special thermosetting materials.

The core wire 1 as a power core is an alloy copper wire 111 with the copper wire 111 of 0.05-0.10 mm, and the core wire 1 as a signal core is a silver-plated oxygen-free copper wire 111 with the copper wire 111 of 0.05-0.08 mm. The power core in the conductor 11 adopts an extremely fine alloy copper wire 111, and the alloy copper wire 111 has extremely high tensile strength, and can effectively improve the stress born by the cable and prevent the conductor 11 from breaking when the cable is bent in use of a long drag chain. The signal core adopts silver plating oxygen-free copper wire 111 line, because the cable is very long, silver plating can effectively improve cable signal transmission's ability. The silver-plated oxygen-free copper wires 111 are twisted by adopting a very small pitch, so that the bending resistance of the drag chain can be effectively improved.

As the core wire 1 of the power core, the copper wire 111 thereof is formed into a conductor 11 by a plurality of layered stranding. In the structure of the conductor 11, the conductor 11 is subjected to multi-time layering twisting, so that the drag chain bending resistance of the conductor 11 can be effectively improved. And employs a very small twist pitch. This configuration can improve the cable's resistance to bending in long drag chains.

At least two core wires 1 are pre-twisted to form a pre-twisted layer cable structure 6, and a plurality of pre-twisted layer cable structures 6 are twisted in the same layer to form a cable. In the drag chain cable corresponding to the ultra-long travel, in the cabling structure, if the inner core wires 1 and the outer core wires 1 are mutually extruded if the cable core wires 1 are layered, the problem that the core wires 1 run is likely to occur, so that all the core wires 1 are required to be distributed on the same layer structurally. The cable is thus pre-twisted once for each core 1, before cabling, depending on the number and size of the individual cores 1. Finally, all the core wires 1 are positioned on the same layer, so that mutual extrusion among the core wires 1 is avoided.

The pre-twisted layer cable structure is formed by twisting 4 core wires 1, 5 core wires 1 or other numbers of core wires 1.

The conductive cloth is high-strength non-woven fabric subjected to electroplating. The inner sheath is wrapped with a layer of high-strength non-woven fabric, and the non-woven fabric is electroplated to form conductive cloth. The anti-interference capability of the whole cable can be effectively improved. Because the cable length is very long, the cable is likely to be subjected to electromagnetic interference of surrounding environment in the signal transmission process, and the wrapping conductive layer can effectively improve the anti-interference capability of the cable.

Claims (10)

1. The utility model provides an ultra-long stroke electric wire for drag chain, which is characterized in that the electric wire comprises a core wire (1), an inner sheath (2), a conductive cloth winding layer (3), a shielding layer (4) and an outer sheath, wherein the net-shaped foamed elastomer plastic (5) is filled in the center of a plurality of core wires, the plurality of core wires are stranded in the same layer outside the net-shaped foamed elastomer plastic, the soft elastomer plastic forms the inner sheath outside the stranded core wires in a pressurizing extrusion mode, the conductive cloth winding layer is formed outside the inner sheath by winding conductive cloth, a shielding layer is formed outside the conductive cloth winding layer in a braiding mode, and the outer sheath with high strength is tightly covered outside the shielding layer.

2. The electric wire for ultra-long travel drag chain of claim 1, wherein the shielding layer is formed with a teflon tape layer on the outer side by wrapping, and the outer protective layer is coated on the outer side of the teflon tape layer.

3. The electric wire for the ultra-long travel drag chain of claim 2, wherein the outer protective layer comprises a first high-strength polyurethane protective layer (7) extruded outside the Teflon wrapping layer, a protective net (8) arranged outside the first high-strength polyurethane protective layer and a second high-strength polyurethane protective layer (9) extruded outside the protective net, and the first high-strength polyurethane protective layer and the second high-strength polyurethane protective layer are tightly adhered together.

4. The electric wire for ultra-long travel drag chain according to claim 3, wherein said protective net is formed by weaving bulletproof wires.

5. The ultra-long travel power cable according to claim 1, wherein the core wire comprises a conductor (11) and an insulating sheath (12), the conductor is formed by twisting a plurality of copper wires (111) in a small pitch manner, and the crosslinked thermosetting material is extruded outside the conductor under pressure to form the insulating sheath of the core wire.

6. The electric wire for ultra-long travel drag chain according to claim 5, wherein the core wire of the power core is an alloy copper wire with a copper wire of 0.05-0.10 mm, and the core wire of the signal core is a silver-plated oxygen-free copper wire with a copper wire of 0.05-0.08 mm.

7. The electric wire for ultra-long travel drag chain according to claim 6, wherein the core wire is a core wire of the power core, and the copper wire is formed into a conductor by a plurality of layered stranding.

8. The electric wire for ultra-long travel drag chain according to claim 1 or 5, wherein at least two core wires are pre-twisted to form a pre-twisted layer cable structure (6), and a plurality of pre-twisted layer cable structures are co-layer twisted to form a cable.

9. The electric wire for ultra-long travel drag chain of claim 8, wherein the pre-twisted layer cable structure is 4-core wire twisted, 5-core wire twisted or other number of multi-core wire twisted.

10. The electric wire for an ultra-long travel drag chain of claim 1, wherein the conductive cloth is a plated high strength non-woven fabric.