JPS6134653Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a different color wire manufacturing device that simultaneously manufactures a plurality of different color wires.

In communication wires, electric wires for equipment wiring, etc., in order to distinguish the electric wires, the colors of the insulating coatings covering the outer periphery of the cylindrical wires are different.

Traditionally, different colored wires were manufactured separately on multiple production lines. However, such manufacturing equipment has the disadvantage that it requires a large number of machines and a large number of workers, leading to high costs.

In addition, manufacturing was also carried out on the same manufacturing line at different times, but this manufacturing method had the disadvantage of being time consuming and inefficient.

An object of the present invention is to provide an apparatus for manufacturing different colored wires that can efficiently produce different colored wires using a common device.

The different color electric wire manufacturing apparatus according to the present invention has a crosshead in which a plurality of independent dice/nipple units are incorporated in a common crosshead main body,
The crosshead is connected to an insulating layer extruder that supplies an insulating coating material to each of the die/nipple units, and a colored layer extruder that supplies a colored coating material to any of the die/nipple units. It is becoming.

Hereinafter, embodiments of the present invention will be described in detail with reference to the illuminated surface. As shown in FIGS. 1 to 4, the different color wire manufacturing apparatus of this embodiment has a common crosshead 1.
two core wires 3 from separate supply bobbins 2, 2',
3' is fed through guide rolls 4, 4'. The crosshead 1 has a crosshead body 1A, and two set holes 5, 5' are bored through the crosshead body 1A. A dividing surface 6 is provided in the crosshead body 1A in a direction transverse to these set holes 5, 5', so that the crosshead body 1A is divided. The divided crosshead bodies 1A are connected by bolts (not shown) or the like. An independent die/nipple unit 7, 7' is fitted into each set hole 5, 5', and is prevented from coming off by a stopper 8, 8'. The die/nipple unit 7 has a sleeve 9, into which an inner nipple 10 and an outer nipple 11 are coaxially fitted from the inlet side and fixed to the sleeve 9 by a nipple presser 12. A die 13 is fitted into the sleeve 9 from its outlet side, and is fixed to the sleeve 9 by a die holder 14. An insulating layer extrusion path 15 is formed on the tip side between the inner nipple 10 and the outer nipple 11, and a colored layer extrusion path 16 is formed between the tip side of the outer nipple 11 and the die 13. An insulating coating material inlet 17 is formed in the sleeve 9 to supply the insulating coating material to the insulating layer extrusion paths 15, and a colored coating material is provided in the sleeve 9 to supply the colored coating material to the insulating layer extrusion path 16. A material inlet 18 is formed. Inner nipple 1
A core wire passing hole 19 is bored in the center of the wire.
In this way, the die nipple unit 7 becomes 2
It has a layer extruded structure. The other die/nipple unit 7' has a sleeve 9', into which a nipple 10' is fitted from the entrance side and fixed to the sleeve 9' by a nipple presser 12'. A die 13' is fitted into the sleeve 9' from its outlet side, and is fixed to the sleeve 9' by a die holder 14'. Nipple 1
An insulating layer extrusion path 15' is formed between the tip of the die 13' and the die 13'. This insulating layer extrusion path 1
In order to supply insulation coating material to sleeve 9', an insulation coating material inlet 17' is formed in sleeve 9'. A core wire passage hole 19' is bored in the center of the nipple 10'. Inside the crosshead main body 1A, each die/nipple unit 7,
an insulation coating material channel 21 for supplying insulation coating material to the insulation coating material inlets 17, 17' of 7'; and a colored coating material channel 23 for supplying the colored coating material from the colored layer extruder 22; is formed. The colored layer extruder 22 is configured to supply a colored coating material having a different color from that of the insulating layer extruder 20.

Next, a method of manufacturing different color wires 24, 24' using such a different color wire manufacturing apparatus will be described. 2 from supply bobbin 2, 2' to crosshead 1
When the core wires 3, 3' are fed in, the core wires 3 bounce through the core wire passing holes 19 of the die/nipple unit 5, and the core wires 3' pass through the core wire passing holes 19' of the die/nipple unit 5'. The core wire 3 passing through the die/nipple unit 5 is extruded and coated with an insulating coating material having good electrical insulation properties such as polyethylene supplied from an insulating layer extruder 20 as an insulating layer 28 as shown in FIG. 5, and then a colored layer is applied. Colored coating material supplied from the extruder 22 (this coating material is colored by adding a coloring agent to plastic such as polyethylene, and has a different color from the insulation coating material supplied from the insulation layer extruder 20) ) is extrusion coated as a colored layer 29 to form the electric wire 24. The surface of this electric wire 24 has a color determined by a colored layer 29. The core wire 3' passing through the die/nipple unit 5' has a
The insulation coating material supplied from the insulation layer extruder 20 is extruded and coated as an insulation layer 28', as shown in FIG. 6, to form an electric wire 24'. The surface of this electric wire 24' has the color of the insulating coating material itself determined by the insulating layer 28'. Therefore, the electric wires 24, 24' are wires of different colors. These different colored electric wires 24,
24' are formed to have the same outer diameter.

Note that if the die/nipple unit 5' also has a two-layer extrusion structure like the die/nipple unit 5, the color of the electric wire 24' can be made different from the insulating layer 28', and the electric wires 24, 24' of different colors can be made.
You can change the color combination as you like.

Further, the present invention is not limited to an apparatus for manufacturing two wires of different colors, but can be similarly applied to an apparatus for manufacturing three or more wires of different colors.

As explained above, according to the apparatus for producing different colored electric wires according to the present invention, different colored electric wires are simultaneously produced by passing a plurality of core wires through a common crosshead and supplying different covering materials from a plurality of extruders. Therefore, the number of machines and the number of workers will decrease,
Manufacturing can be performed efficiently and manufacturing costs can be reduced. In addition, since the crosshead incorporates an independent die/nipple unit, the wall thickness can be adjusted for each strip.
Stable extrusion coating can be performed.

[Brief explanation of drawings]

1 and 2 are a plan view and a side view showing an example of the device according to the present invention, FIG. 3 is a cross-sectional view with the die/nipple unit of the crosshead used in this embodiment omitted, and FIG. 4 5 is a cross-sectional view of the same crosshead at a cracked surface with the die/nipple unit assembled therein, and FIGS. 5 and 6 are cross-sectional views showing an example of different colored electric wires. 1... Crosshead, 1A... Crosshead body, 3, 3'... Core wire, 5, 5'... Set hole,
7,7'...Dice nipple unit, 15,
15'... Insulating layer extrusion path, 16... Colored layer extrusion path, 17, 17'... Insulating coating material inlet, 18...
... Colored coating material inlet, 20 ... Insulating layer extruder, 2
2... Colored layer extruder, 24, 24'... Different colored electric wires.

Claims (1)

[Scope of utility model registration request] It has a crosshead in which a plurality of independent die/nipple units are incorporated in a common crosshead body, and the crosshead includes each of the dice/nipple units.
An insulating layer extruder that supplies the insulating coating material to each of the insulating layer extrusion paths of the nipple unit and a colored layer extruder that supplies the colored coating material to the colored layer extrusion path of any of the dice/nipple units are connected. A device for producing different colored electric wires.