TWI569551B - A method for producing cables with water resistant core wire structures - Google Patents

Description

Cable with waterproof core structure

The invention relates to a waterproofing process of a waterproof cable, in particular to a method for manufacturing a cable structure with a waterproof core wire.

Cables include optical cables, cables, etc., and they are used for many purposes, such as controlling installation, connecting equipment, and transmitting power. In some occasions, for example, when outdoor wire and cable are connected to the equipment at both ends, water vapor or rainwater is easily cut into the equipment at both ends through the wire processing, which causes damage to the equipment and safety of electric shock. Therefore, it is generally required to waterproof the cable.

There are several existing waterproofing methods, including external waterproofing, and core wire waterproofing. Among the current core waterproofing process, see FIG. 1, the cable includes a conductor 10, a core 20 encasing the conductor 10, and The outer jacket 30 of the plurality of core wires 20 is wrapped, and the cable is first peeled, then tinned, welded, and then glued and sealed, and finally the heat shrinkable tube is baked. Under such a process, a plurality of steps such as tin, overlapping butt welding (for example, at the position of 40), dispensing sealing, and sleeve heat shrinking tube are required, the process is complicated, the high defect rate is easily caused, and the material is wasted and increased. The production time. At the same time, the overlapping butt welding step easily leads to a defect rate, thereby reducing the waterproof performance of the core wire.

The invention provides a method for manufacturing a cable with a waterproof core structure, adopting a novel process and structure, removing steps such as tin, welding, dispensing sealing and sleeve heat shrinking tube, simplifying the process, reducing the cost and the non-performing rate. .

In order to solve the above technical problem, the technical solution of the present invention is a method for manufacturing a cable having a waterproof core wire structure, the cable including a conductor, an insulated core wire encasing the conductor, and an outer cover after wrapping the insulated core wire stranded cable The method includes the following steps: Step 1: peeling the cable at the waterproof place to expose the insulated core wire; Step 2: performing laser half-stripping on the insulated core wire to form a core wire opening to expose the conductor, The opening width of the core wire ranges from 0.5 mm to 1 mm; the width of the opening of the core wire is also the stripping size, which facilitates adhesion of the glue to the conductor insulating core wire during dispensing, and completely wraps it, and facilitates drying of the glue to achieve waterproofing. Effect; Step 3: Fully seal the core wire at the opening, so that the insulating core wire and the conductor are filled with sealing glue to achieve the sealing waterproof effect.

Further, in order to achieve a better waterproof effect, the cable further includes a tubular sleeve having sidewalls having a plurality of staggered holes; the tubular sleeve being disposed outside the conductor within the insulated core. Thus, when the sealing glue is filled, the honeycomb-like holes are arranged such that the tubular sleeve auxiliary glue adheres to the outer wall of the conductor and the inner wall of the insulating core, so that the glue completely wraps the conductor. Among them, the length of the tubular sleeve can be long or short, and it is preferably adapted to the depth of the filled sealing glue.

In order to fill the side walls of the insulating core wire and the conductor with glue, the side wall of the tubular sleeve is also provided with a flow guiding groove. In addition to the hole, the guiding groove is arranged, so that the glue is quickly guided from the opening of the core wire to the inside, and the speed is accelerated. Glue speed. One or more of the guide channels can be arranged.

The invention adopts the laser semi-peeling + dispensing process, the process is simple, the process of reducing tin, welding, sleeve heat shrinking tube and the like can be reduced, and the defect rate is greatly reduced; meanwhile, the above steps of the invention are adopted, the cost is greatly reduced, In terms of materials, the amount of tin wire, tin bar, and heat-shrinkable tube can be eliminated; in terms of time, the time for processing tin, solder, and heat-shrink tubing can be eliminated. The waterproof test of the present invention can use a 3KG air pressure to blow the core wire without leaking water. The invention has simple process, easy manufacture and good practical value.

10‧‧‧Conductor

20‧‧‧core

30‧‧‧External

40‧‧‧ tin, overlapping butt welds

1‧‧‧conductor

2‧‧‧core

21‧‧‧core opening

3‧‧‧External

4‧‧‧Tubular sleeve

41‧‧‧ hole

42‧‧‧Guide trough

1 is a schematic view of a conventional process in the prior art; FIG. 2 is a schematic view of a manufacturing process of the present invention; FIG. 3 is a schematic structural view of a cable according to Embodiment 1 of the present invention; FIG. 5 is a schematic structural view of a conductor of a cable according to Embodiment 3 of the present invention. FIG.

The invention will now be further described with reference to the drawings and specific embodiments.

[Example 1]

A manufacturing method of a cable having a waterproof core structure, as shown in FIG. 2 and FIG. 3, the cable includes a conductor 1, a core 2 enclosing the conductor 1, and an outer cover 3 wrapped around the core 2 The method includes the following steps: Step 1: As shown in FIG. 2, the cable is peeled off at the waterproof place 3 to expose the insulated core wire 2, and the insulated core is not damaged when peeling the outer cover; Step 2: The core wire 2 performing laser half-stripping to form a core opening 21 to expose the conductor 1. When the core wire is half-stripped, the conductor copper wire is unbreakable. The core opening 21 has a width ranging from 0.5 mm to 1 mm, and the stripping size is favorable for glue when dispensing. Adhering to the conductor and the core wire, and completely wrapping it, and facilitating the drying of the glue to achieve the waterproof effect; Step 3: performing a dispensing seal at the core opening 21 to fill the insulating core wire and the conductor with a sealing glue to Achieve sealing and waterproofing effect. It is not easy to make too much or too little glue, too much to make the wire dirty, too little to achieve waterproof function. The best effect of dispensing is that the glue is dew-like, so that the core wire 2 and the conductor 1 are filled with sealing glue, and the two sections of the semi-stripping core are wrapped together.

[Example 2]

In this embodiment, in order to achieve a better waterproof effect, see Figure 4 (enlarged schematic view of the conductor), the cable further includes a tubular sleeve 4, the side wall of the tubular sleeve 4 has a plurality of holes 41 staggered; The tubular sleeve 4 is disposed outside of the conductor within the insulated core. Thus, when the sealing glue is filled, the honeycomb-like holes are arranged such that the tubular sleeve 4 assists the glue to adhere to the outer wall of the conductor and the inner wall of the insulating core, so that the glue completely wraps the conductor. Among them, the length of the tubular sleeve 4 can be long or short, and is preferably adapted to the depth of the filled sealing glue.

[Example 3]

In this embodiment, in addition to the tubular sleeve structure of the embodiment 2, in order to fill the side walls of the insulated core wire and the conductor with glue, referring to FIG. 5 (an enlarged schematic view of the conductor), the side wall of the tubular sleeve 4 is also provided with a guide. Flow cell 42.

The guide trough is radially disposed, and the diversion trough may be vertically or obliquely disposed in a radial direction of the tubular sleeve structure. In addition to the holes, the arrangement of the guide grooves allows the glue to be quickly diverted from the opening of the core to the inside, speeding up the dispensing speed. The number of the guide channels is not limited, and one or more can be set according to actual conditions.

The technical solution of the present invention can fully and effectively achieve the above object of the invention, and The structural principle and functional principle of the invention have been fully verified in the embodiments, and can achieve the intended effect and purpose, and the embodiments of the present invention can also be transformed according to these principles, although specifically shown and introduced in conjunction with the preferred embodiments. The present invention will be understood by those skilled in the art that various changes in form and details may be made without departing from the spirit and scope of the invention The scope of protection.

1‧‧‧conductor

2‧‧‧core

21‧‧‧core opening

3‧‧‧External

Claims (3)

A method for manufacturing a cable having a waterproof core wire structure, comprising: a conductor, an insulated core wire encasing the conductor, and an outer cover wrapped around the insulated core wire stranded cable, comprising the following steps: Step 1: the cable is at The waterproofing portion peels off the outer cover to expose the insulating core wire; step 2: performing laser half-stripping on the insulating core wire to form a core wire opening to expose the conductor, the core wire opening width ranging from 0.5 mm to 1 mm; and step 3: at the core wire A sufficient dispensing seal is made at the opening to fill the insulating core wire with the sealing glue. The method for manufacturing a cable having a waterproof core structure according to claim 1, wherein the cable further comprises a tubular sleeve, the side wall of the tubular sleeve having a plurality of holes arranged in a staggered manner; A tubular sleeve is disposed outside the conductor within the insulated core wire. The method for manufacturing a cable having a waterproof core structure according to claim 2, wherein the side wall of the tubular sleeve is further provided with a flow guiding groove.