CN214279636U

CN214279636U - Tensile and waterproof rubber jacketed flexible cable

Info

Publication number: CN214279636U
Application number: CN202120318088.7U
Authority: CN
Inventors: 毛娟娟; 魏永乾; 杜国莹; 姬彦东; 臧爱明; 邱效珑
Original assignee: Lanzhou Zhongbang Wire & Cable Group Co ltd
Current assignee: Lanzhou Zhongbang Wire & Cable Group Co ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-09-24
Anticipated expiration: 2031-02-04

Abstract

The utility model discloses a tensile and waterproof rubber jacketed flexible cable, which comprises a conductor, wherein a flexible steel wire is arranged at the central position of the conductor, the outer surface of the conductor is coated with an insulating layer to form an insulating wire core, and a plurality of insulating wire cores are twisted into a cable core; the gaps of the cable core are filled with water-blocking yarns, and a water-blocking tape is wound outside the cable core; an inner sheath is extruded outside the water-blocking tape, a waterproof outer sheath is arranged outside the inner sheath, and a fiber woven reinforcing layer is arranged between the inner sheath and the outer sheath. The utility model discloses can satisfy the user to the tensile requirement of cable, waterproof does simultaneously. The tensile property of the cable is obviously enhanced by adding the soft steel wire at the center of the conductor and designing the fiber braided reinforcing layer structure, so that the use safety of the cable is improved; the water-blocking yarns and the water-blocking tapes are used for preventing water from invading the insulating layer during cabling; due to the use of the TPE thermoplastic elastomer sheath, the flexibility of the cable is improved while the cable is waterproof.

Description

Tensile and waterproof rubber jacketed flexible cable

Technical Field

The utility model relates to a wire and cable specifically is a tensile, waterproof rubber cover flexible cable, is applicable to rated voltage 450/750V and following various electrical equipment, for example daily electric appliance, electric machine, the portable power cord of electrician's device and utensil can use under indoor or outdoor environmental condition.

Background

The rubber sleeve cable is mainly used in the occasions with frequent movement, the use requirement is high, and the service life of the cable is influenced by the fact that the conductor is easily thinned and even broken in the continuous stretching process of the common rubber sleeve cable; meanwhile, for the occasions with water, the waterproof performance of the common rubber sleeve cable is not enough. For solving the not good problem of performance in the aspect of the tensile of ordinary rubber sleeve cable, satisfy the waterproof demand of customer's rubber sleeve cable needs simultaneously, this utility model provides a tensile, waterproof rubber sleeve flexible cable. The tensile property of the cable can be effectively improved by adding the tensile soft steel wire at the center of the cable conductor and adding the fiber braided reinforcing layer in the cable structure; and meanwhile, waterproof materials are filled in the cable forming gaps, and the sheath layer is provided with a waterproof structure, so that the waterproof performance of the cable is effectively improved.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a tensile and waterproof rubber jacketed flexible cable, which comprises a conductor, wherein a flexible steel wire is arranged at the central position of the conductor, the outer surface of the conductor is coated with an insulating layer to form an insulating wire core, and a plurality of insulating wire cores are twisted into a cable core; the gaps of the cable core are filled with water-blocking yarns, and a water-blocking tape is wound outside the cable core; an inner sheath is extruded outside the water-blocking tape, a waterproof outer sheath is arranged outside the inner sheath, and a fiber woven reinforcing layer is arranged between the inner sheath and the outer sheath.

Preferably, the conductor adopts a 5 th annealed copper conductor required by GB/T3956-.

Preferably, the insulating layer is made of IE4 type ethylene propylene diene monomer rubber.

Preferably, the inner sheath is made of SE4 type neoprene.

Preferably, the waterproof outer sheath is made of TPE thermoplastic elastomer material.

Preferably, the water-blocking tape cover is 20% -30% of the width of the tape.

Drawings

Fig. 1 is a schematic structural view of the tensile and waterproof rubber-sheathed flexible cable of the present invention.

In the figure: 1-mild steel wire; 2-a copper conductor; 3, insulating; 4-water blocking yarn; 5-water blocking tape; 6-inner sheath; 7-weaving a reinforcing layer; 8-waterproof outer sheath.

Detailed Description

As shown in figure 1, the utility model discloses a tensile, waterproof rubber cover flexible cable

1. Selection of materials

(1) Conductor 2: by adopting the 5 th annealed copper conductor required by GB/T3956-.

(2) Insulation 3: an IE4 type ethylene propylene diene monomer rubber is adopted.

(3) Filling and lapping: and the gaps of the cable core are filled with the water-blocking yarns 4, and meanwhile, the cable core is wrapped with the water-blocking tape 5.

(4) The inner sheath 6: model SE4 neoprene was used.

(5) Weaving the reinforcing layer 7: a fiber braided reinforcing layer is arranged between the inner sheath and the outer sheath.

(6) Waterproof oversheath 8: TPE thermoplastic elastomer material is adopted.

2. Process scheme

(1) A conductor: the 5 th annealed copper conductor required by GB/T3956-. A soft steel wire with the same outer diameter as the stranded wire is additionally arranged at the center of the conductor, so that the tensile strength of the cable conductor is improved, and the stability of the conductor is improved. The twisted conductor should not have the phenomena of strand missing, strand loosening and strand breaking, the conductor is uniformly and tightly twisted, the surface is smooth and clean, and the defects of oil stain, burrs, sharp edges, scratches, bulges and the like are avoided.

(2) Insulating and extruding an inner sheath: the insulation adopts IE4 type ethylene propylene diene monomer rubber, the inner sheath adopts SE4 type chloroprene rubber, and the continuous vulcanization production line is extruded, namely the main carrier in the rubber vulcanization process is high-pressure saturated steam, the production mode easily causes water inflow in the rubber sleeve cable production process, so that the cable has electrical faults in the use process, and the following measures are mainly adopted in the production to prevent the cable from water inflow in the rubber extrusion and vulcanization processes: a) the management of sizing materials is enhanced, and the phenomenon that the extruded layer is scratched by impurities to cause water inflow is avoided; b) the mould is scientifically matched, so that quality problems such as eccentricity and degumming are avoided; c) the outer diameter is checked before production, the lower sealing steel and the rubber pad are correctly selected, and water is prevented from entering the cable due to scratching of the rubber; d) and (5) joint processing is completed. After the rubber is extruded and vulcanized, the defects of visible air bubbles, sand holes and the like on the section are avoided, the surface of the wire core is smooth, obvious twisted wire convex patterns are avoided, and sharp corners, particles, scorching or scratching marks are avoided.

(3) Cabling and filling: the cable core is cabled in the right direction, water-blocking yarns are filled between the middle gap and the peripheral gap to be round, meanwhile, a water-blocking tape is wrapped outside the cable core, and the lapping cover of the water-blocking tape is 20% -30% of the width of the tape.

(4) Weaving a reinforcing layer: a fiber woven reinforcing layer is arranged between the inner sheath and the outer sheath to bear most of the tensile force of the cable, and the tensile force borne by the conductor is reduced. The pitch-diameter ratio of fiber weaving is 2-3.

(5) Waterproof jacket layer: TPE thermoplastic elastomer material is adopted as a waterproof sheath layer, and the TPE is a high polymer material which has the characteristics of both plastics and rubber, shows the high elasticity of the rubber at normal temperature and can be plasticized and molded at high temperature. The TPE thermoplastic elastomer product has excellent waterproofness, is used as a cable sheath material, increases the product flexibility while being waterproofed, and can be used in occasions with water and frequent movement. The TPE protective layer is extruded by a plastic extruder, the surface of the sheath after extrusion is smooth and flat, sharp corners, pockmarks, scorched or scratched traces are avoided, and the cross section has no visible defects such as bubbles, sand holes and the like.

The design of the structure of the tensile and waterproof rubber jacketed flexible cable can meet the tensile requirement of a user on the cable and can also prevent water. The tensile property of the cable is obviously enhanced by adding the soft steel wire at the center of the conductor and designing the fiber braided reinforcing layer structure, so that the use safety of the cable is improved; the water-blocking yarns and the water-blocking tapes are used for preventing water from invading the insulating layer during cabling; due to the use of the TPE thermoplastic elastomer sheath, the flexibility of the cable is improved while the cable is waterproof.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a tensile, waterproof rubber cover flexible cable which characterized in that: the cable comprises a conductor, wherein a flexible steel wire is arranged at the center of the conductor, an insulating layer is coated on the outer surface of the conductor to form an insulating wire core, and a plurality of insulating wire cores are twisted into a cable core; the gaps of the cable core are filled with water-blocking yarns, and a water-blocking tape is wound outside the cable core; an inner sheath is extruded outside the water-blocking tape, a waterproof outer sheath is arranged outside the inner sheath, and a fiber woven reinforcing layer is arranged between the inner sheath and the outer sheath.

2. The tension-resistant, waterproof cabtyre flexible cable according to claim 1, wherein: the conductor adopts a 5 th annealed copper conductor required by GB/T3956-.

3. The tension-resistant, waterproof cabtyre flexible cable according to claim 1, wherein: the insulating layer adopts IE4 type ethylene propylene diene monomer rubber.

4. The tension-resistant, waterproof cabtyre flexible cable according to claim 1, wherein: the inner sheath adopts SE4 type neoprene.

5. The tension-resistant, waterproof cabtyre flexible cable according to claim 1, wherein: the waterproof outer sheath is made of TPE thermoplastic elastomer material.

6. The tension-resistant, waterproof cabtyre flexible cable according to claim 1, wherein: the water-blocking tape lapping cover is 20-30% of the width of the tape.