Manufacturing method of cable having waterproof outer sheath structure

A production method and cable technology, applied in the direction of insulating conductors/cables, etc., can solve the problems of difficult waterproof sealing of connecting lines, equipment damage, electric shock safety, etc., and achieve the effect of good practical value, easy production, and preventing glue from falling off.

Active Publication Date: 2015-12-23
SHENZHEN NS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention proposes a method for making a cable with a waterproof coating structure. The main technical problem to be solved is that when the outdoor wire and cable are connected to equipment at both ends, water vapor or r

Method used

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  • Manufacturing method of cable having waterproof outer sheath structure
  • Manufacturing method of cable having waterproof outer sheath structure
  • Manufacturing method of cable having waterproof outer sheath structure

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0020] Example 1

[0021] A method for manufacturing a cable with a waterproof jacket structure, see figure 2 with image 3 The cable includes a conductor 1, a core wire 2 that wraps the conductor 1, and a waterproof outer layer 3 that wraps the core wire and twists into a cable, which includes the following steps:

[0022] Step 1: Such as figure 2 As shown, the cable is stripped at the waterproof cut, and the waterproof outer layer 3 is stripped to expose the insulated core wire 2 inside, and the insulated core wire should not be damaged when stripping;

[0023] Step 2: Put a heat-shrinkable tube on the waterproof cutout of the cable, place the heat-shrinkable tube at the waterproof cutout of the cable, and heat it to heat the heat-shrinkable tube into a horn shape to form a Horn opening 31;

[0024] Step 3: Fill and seal the horn opening 31 with glue, and the glue should fill the horn opening. The filling amount should not overflow or be too small. The overflow will affect the a...

Example Embodiment

[0025] Example 2

[0026] In order to prevent the inner core wire from being damaged when the cable is heated, in this embodiment, refer to Figure 4 Before putting on the heat shrinkable tube, a protective layer 4 that can be peeled off is firstly sheathed at the waterproof cut of the cable. Specifically, step 2 in the embodiment can be replaced by the following process: a layer of a peelable protective layer 4 is firstly sheathed at the waterproof cutout of the cable, and the protective layer 4 is sheathed between the core wires at the waterproof cutout. Then, the heat-shrinkable tube is put through the waterproof cut of the cable, and the heat-shrinkable tube is heat-baked to make it heat-shrink to form a horn opening 31; then, the protective layer 4 is removed. Among them, the protective layer must not shrink when exposed to heat or higher than the melting point of the heat shrinkable tube. When the heat shrinkable tube shrinks, the protective layer is not affected. At the ...

Example Embodiment

[0028] Example 3

[0029] For ease of production, see Figure 5 , The cable also includes a detachable clamping member 5, the clamping member 5 has a tubular sleeve 51, the end of the tubular sleeve 51 has a horn-shaped opening 52; in the heat shrinkable tube through the cable After the waterproof cut, the clamping member 5 is sleeved outside the heat-shrinkable tube, and then the heat-shrinkable tube is heat-baked to make it heat-shrink to form a horn opening, the horn opening and the end of the tubular sleeve 51 The trumpet-shaped openings 52 overlap; wherein the diameter of the tubular sleeve 51 of the clamping member 5 is slightly larger than the diameter of the heat shrinkable tube, so that the clamping member is sleeved outside the heat shrinkable tube and will not fall off. In this embodiment, before putting on the heat shrinkable tube, a layer of protective layer 4 that can be peeled off is also covered at the waterproof cut of the cable.

[0030] In this way, when the he...

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PUM

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Abstract

The invention discloses a manufacturing method of a cable having a waterproof outer sheath structure. On the basis of the novel process and structure, the waterproof cable comprises conductors coated with core wire insulating layers; the core wires are twisted to form a cable unit and the cable unit is coated with a waterproof outer sheath layer. A heat shrink tube sleeves a waterproof cutting opening of the waterproof outer sheath layer; and thermal drying process is carried out on the heat shrink tube to form a horn shape at the waterproof cutting opening, thereby carrying out glue pouring for sealing. According to the invention, glue pouring is carried out by using the horn-shaped opening and the sealing glue coated at the surface of the outer sheath opening of the cable can be protected effectively by using the heat shrink tube, thereby realizing the insulation effect. Meanwhile, the glue shedding can be prevented. The waterproof testing is carried out: the side core wire is blown by 3-KG air pressure without any water leakage. The process is simple; the manufacturing operation can be carried out easily; and the practical value is great.

Description

technical field [0001] The invention relates to a waterproof process for a waterproof cable, in particular to a method for manufacturing a cable structure with a waterproof coating. Background technique [0002] Cables include optical cables, cables, etc., which have many uses, and are mainly used for multiple functions such as control installation, connection equipment, and power transmission. In some occasions, for example, when outdoor wires and cables are connected to the equipment at both ends, water vapor or rainwater can easily enter the equipment at both ends through the incision outside the wire processing, causing equipment damage and electric shock safety. Therefore, it is generally necessary to waterproof the cable. [0003] There are several existing waterproof methods, one is to mechanically add some sheaths for protection, but this kind of sheath is difficult to meet the protection requirements of IP67 due to the assembly gap; the other is to use O-ring sealin...

Claims

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Application Information

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IPC IPC(8): H01B13/32
Inventor 蒋胜雄
Owner SHENZHEN NS TECH
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