CN101236808A

CN101236808A - A production method for color cable core with color insulation layer

Info

Publication number: CN101236808A
Application number: CNA2008100544772A
Authority: CN
Inventors: 高荣富
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-25
Filing date: 2008-01-25
Publication date: 2008-08-06

Abstract

The invention relates to a manufacturing method for a dichroic cable core provided with a colored insulation material layer on the outside, wherein, when the insulation material layer is extruded on a conductor, two plastic extruding machines are used; one is a plastic extruding machine for uncolored insulation materials and the other is a plastic extruding machine for colored insulation materials; the two plastic extruding machines share a double-layer coextrusion handpiece; the uncolored insulation materials are taken as inner layer insulation materials, and the colored insulation materials are taken as outer layer insulation materials; two layers of insulation materials are combined in the same handpiece, and simultaneously extrusion of double-layer insulation materials is completed on a cable conductor. By adoption of the method for color changing of the insulating core, users only need to extrude colored insulation materials in a donkey engine completely, and obviously the means can greatly reduce the number of color changing wastes. By adoption of the method of the invention, the interlocking operation of the two plastic extruding machines is realized and the operating procedure is simplified.

Description

The production method of the color separation cable core of the painted insulation bed of material of a kind of tyre

Technical field

The present invention relates to the production method of the color separation cable core of the painted insulation bed of material of a kind of tyre.

Background technology

Regulation according to GB6995.4～GB6995.5 (electric wire distinguishing mark): electrical equipment wire cable insulating core, the following cable of five cores generally should adopt color identification, and the insulation of cable core should be adopted painted Insulation Material or adopt other suitable method painted on the surface of insulation; Crosslinked polyetylene insulated or polyethylene insulation or polyvinyl chloride insulation power cable, insulated wire cores should adopt color identification, and polyvinyl chloride cable generally should adopt painted Insulation Material, and the insulated wire cores of easy coloring allows to adopt sign yarn or tracer stripe.

Polyvinyl chloride cable, the general employing of insulated wire cores extrudes the painted Insulation Material of one deck, this method needs the frequent plastics color of changing at the production process plastic extruding machine, during colour changing, need all to remove the original plastics in extruder barrel and the head clean completely with the plastics of new color, destroy a lot of plastics, the SJ-90 type plastic extruding machine colour changing one less important generation PVC plastics 13kg that gives up, per tour (8 hours) colour changing 7 times, will production waste 91kg, to press 9 yuan/kg of PVC plastics and calculate, scrap piece loss is at 819 yuan, one available machine time calculated by 16 hours, and the loss of generation is 1638 yuan/day.

Crosslinked polyethylene or polyethylene insulated cable, if insulated wire cores adopts the method that extrudes the painted Insulation Material of one deck, a SJ-90 type plastic extruding machine, the waste material that colour changing once produces is 9kg, the organosilane crosslinked polyethylene insulating material calculates by 16 yuan/kg, colour changing every day 14 times, the scrap piece loss of generation are 2016 yuan/day; If insulated wire cores adopts the recognition methods of sign yarn or tracer stripe, identify not obviously, and easily cause non-uniform electric, the more important thing is that the user does not accept, and is difficult in marketing.

Summary of the invention

Technical problem to be solved by this invention provides a kind ofly can significantly reduce the colour changing amount of waste material, effectively reduce the production method of color separation cable core of the painted insulation bed of material of tyre of cable production cost.

The present invention adopts following technical scheme:

The present invention is on conductor during the extruded insulation bed of material, use two plastic extruding machines, one is the plastic extruding machine of true qualities Insulation Material and the plastic extruding machine of a painted Insulation Material, two shared double-layer coextrusion heads of plastic extruding machine, make the primary insulation material by the true qualities Insulation Material, painted Insulation Material is made the outer layer insulation material, makes two layers of insulation material combination in same head, finishes extruding of double hyer insulation material simultaneously on cable conductor.

The plastic extruding machine that internal layer of the present invention adopts is bigger than the outer plastic extruding machine specification that adopts, and the primary insulation material that extrudes on conductor is bigger than outer layer insulation material thickness.

Good effect of the present invention is as follows: its internal layer of insulated wire cores that adopts the inventive method to produce adopts true qualities Insulation Material, the painted Insulation Material of outer employing, finishes extruding of insulating barrier by two plastic extruding machines.When adopting the inventive method to change the insulated wire cores color, only need be extruded the painted Insulation Material in the subsidiary engine totally and get final product, and clearly this mode can significantly reduce the quantity of colour changing waste material.

The inventive method has adopted the double-layer coextrusion head, has realized that true qualities Insulation Material and painted Insulation Material extrude on conductor simultaneously, have guaranteed insulation quality; Two plastic extruding machines have been realized the combined operation of main and auxiliaries by a cover electrical control gear is installed, and two plastic extruding machines can raise speed or reduction of speed simultaneously, have simplified operation.

Adopt the inventive method to realize the combined operation of two plastic extruding machines, simplified operation sequence.

The inventive method is applicable to the production of following cable insulation core:

1, rated voltage 1.8/3kV and following plastic insulation power cable;

2, electrical equipment electric wire;

3, rated voltage 450/750V plastic insulation control cable.

Adopting the inventive method is example with the production of power cable with cross-linked polyethylene insulation insulated wire cores, analyzes its economic benefit:

If according to the way that extrudes the painted Insulation Material of one deck of routine, SJ-90 type plastic extruding machine colour changing one less important generation XLPE waste material 9kg; And employing the inventive method is used SJ-90 plastic extruding machine collocation SJ-30 plastic extruding machine, at most only produces the 2kg waste material and can finish colour changing, and the colour changing waste material has reduced by 77%, and the XLPE insulating material is by 16 yuan/kg, and colour changing once can be reduced the loss 112 yuan; According to the production statistics, need colour changing 14 times SJ-90 plastic extruding machine every day, adopts the inventive method can reduce 1568 yuan of scrap piece loss every day, and escapable cost was more than 500,000 yuan in 1 year.

Adopt the inventive method enterprise can only purchase the true qualities Insulation Material, outer painted Insulation Material can realize by the method for adding color masterbatch in proportion in the true qualities Insulation Material, so just can significantly reduce the kind of raw materials inventory, minimizing Insulation Material, be that enterprise reduces substantial contribution.

Description of drawings

The cable core structural representation of accompanying drawing 1 for adopting the inventive method to produce,

The double-layer coextrusion handpiece structure schematic diagram that accompanying drawing 2 uses for the inventive method,

Accompanying drawing 3 is the true qualities Insulation Material charging aperture of the double-layer coextrusion head of the inventive method use and the structural representation that extruding cavity is connected.

In the accompanying drawings: 1 head, 2 conductors, 3 core pipes, 4 core rods, 5 die sleeves, 6 extruding cavities, 7 true qualities Insulation Material divide colloid, 8 true qualities Insulation Material charging apertures, 9 painted Insulation Material to divide colloid, 10 painted Insulation Material charging apertures, 11 nuts, 12 to press mother, 13 glands, 14 true qualities Insulation Material, 15 painted Insulation Material.

Embodiment

As shown in Figure 1, the color separation cable core that has double insulating layer that adopts the inventive method to produce, it comprises conductor 2 and is extruded in conductor 2 insulating barriers formation outward that described insulating barrier is made of the extrinsic color insulating barrier two layers of insulation material layer that painted Insulation Material 15 constitutes inner insulating layer and the extrinsic color insulating barrier that true qualities Insulation Material 14 constitutes.The color separation cable core that adopts the inventive method to produce is divided into redness, green, yellow, black, orange, blue, white etc.

As accompanying drawing 2, shown in 3, the extruder head that the inventive method adopted comprises head 1, be sleeved on the core pipe 3 in the head 1, be arranged on the extruding cavity 6 that constitutes by taper core rod 4 and Taper Pipe shape die sleeve 5 of core pipe 3 front ends, the true qualities Insulation Material of passing through that is arranged on head 1 rear end is divided true qualities Insulation Material charging aperture 8 that colloid 7 and extruding cavity 6 be connected and the Insulation Material charging aperture 10 that painted Insulation Material divides colloid 9 and extruding cavity 6 to be connected that passes through that is arranged on head 1 front end, and cable conductor 2 is set in core pipe 3, core rod 4, in dimension tubulose die sleeve 5 and the extruding cavity 6 that constitutes by core rod 4 and dimension tubulose die sleeve 5.Described core pipe 3 and true qualities Insulation Material divide colloid 7 by nut 11 with press female 12 to fixedly connected with head 1.Described Taper Pipe shape die sleeve 5 divides colloid 9 to fixedly connected with head 1 by gland 13 with painted Insulation Material.

Adopt the inventive method on conductor 2, during the extruded insulation bed of material, to need to use two plastic extruding machines, adopt the double-layer coextrusion head, on conductor 2, extrude two-layer insulation simultaneously.Internal layer adopts a big specification plastic extruding machine, extrudes one deck Insulation Material on conductor, and thickness is bigger, small dimension plastic extruding machine of outer employing, a shared double-layer coextrusion head extrudes the thin painted Insulation Material of one deck simultaneously in the true qualities insulation, reach the purpose of insulation color separation.

The inventive method adopts unique double-layer coextrusion to go out handpiece structure, make the combination in advance in same head of two-layer Insulation Material, under high temperature and extrusion pressure effect, make to reach between the true qualities Insulation Material 14 of fusion and painted Insulation Material 15 two layers of plastic and combine closely, realized combining closely between material molecule, interlayer does not have air gap, has stopped the generation of insulating barrier internal electric field intensity distributions uneven phenomenon; Simultaneously, mould assembles to finish in head and reaches the production of can directly starting shooting behind the temperature conditions.

The specific embodiment of the invention is as follows: the inventive method adopts two extruders to finish the insulation bed of material and extrudes, and two plastic extruders can adopt following model collocation to use: (1) main frame is SJ-30 as SJ-90 collocation subsidiary engine; (2) main frame is that SJ-65 collocation subsidiary engine is SJ-20; (3) main frame is that SJ-80 collocation subsidiary engine is SJ-40.Wherein a big specification plastic extruding machine is called " main frame ", and its effect is extruding to guarantee the thickness of the insulation bed of material of the realization internal layer true qualities insulation bed of material; Other one is the small dimension plastic extruding machine, is called " subsidiary engine ", and its effect is to realize extruding of the outer painted insulation bed of material, and the thickness minimum controllable of this layer Insulation Material can realize that the insulated wire cores colour code is clear built in about 0.2mm.Main frame is at most only produced the 3kg waste material can finish colour changing, and the colour changing waste material has reduced by 77%, and the PVC insulating material is by 9 yuan/kg, and colour changing is once reduced the loss 90 yuan; According to the production statistics, a SJ-90 plastic extruding machine needs colour changing 14 times every day, and can reduce 1260 yuan of scrap piece loss every day behind employing the present invention, and escapable cost was more than 450,000 yuan in 1 year.

With the main frame is SJ-90, and subsidiary engine is that SJ-30 is an example, and wherein the true qualities Insulation Material charging aperture 8 of leading the double-layer coextrusion head that sebific duct and the present invention adopt of extruding of SJ-90 is connected; Wherein painted (redness) Insulation Material charging aperture 10 of leading the double-layer coextrusion head that sebific duct and the present invention adopt of extruding of SJ-30 is connected, divide colloid 7 to enter in the extruding cavity 6 by the true qualities Insulation Material 14 that true qualities Insulation Material charging aperture 8 enters in the head 1 by the true qualities Insulation Material, enter painted Insulation Material 15 in the head 1 by painted Insulation Material charging aperture 10, divide colloid 9 to enter in the extruding cavity 6 by painted Insulation Material, when simultaneously conductor 2 entered in the extruding cavity 6 by the hauling machine traction by core pipe 3, true qualities Insulation Material 14 and painted Insulation Material 15 were finished in extruding cavity 6 and the extruding of conductor 2.The temperature controlling range of the temperature controlling range that enters the temperature controlling range of true qualities Insulation Material 14 in the conductor 2 and painted Insulation Material 15 and head 1 in the inventive method when adopting common extrusion head production is identical.Adopt the various physical indexs of color separation cable core and the performance index of the painted insulation bed of material of tyre of the inventive method production to meet national standard fully.

Claims

1, the production method of the color separation cable core of the painted insulation bed of material of a kind of tyre, when it is characterized in that on conductor the extruded insulation bed of material, use two plastic extruding machines, one is the plastic extruding machine of true qualities Insulation Material and the plastic extruding machine of a painted Insulation Material, two shared double-layer coextrusion heads of plastic extruding machine are made the primary insulation material by the true qualities Insulation Material, and painted Insulation Material is made the outer layer insulation material, make two layers of insulation material combination in same head, on cable conductor, finish extruding of double hyer insulation material simultaneously.

2, the production method of the color separation cable core of the painted insulation bed of material of a kind of tyre according to claim 1, the plastic extruding machine specification that it is characterized in that the outer employing of plastic extruding machine ratio that internal layer adopts is big, and the primary insulation material that extrudes on conductor is bigger than outer layer insulation material thickness.