CN210061936U

CN210061936U - Low-smoke halogen-free extrusion die for wires and cables

Info

Publication number: CN210061936U
Application number: CN201822234901.3U
Authority: CN
Inventors: 王火胜; 邓鹏飞; 艾书舰; 刘洪光
Original assignee: Wuhan No2 Electric Wire & Cable Co Ltd
Current assignee: Wuhan No2 Electric Wire & Cable Co Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2020-02-14
Anticipated expiration: 2028-12-28

Abstract

The utility model relates to an electric wire and cable extrusion molding technical field discloses a low smoke and no steamed material extrusion tooling of electric wire and cable, including die body and the die orifice of opening on the die body, one side that the die body is located the die orifice is opened there is the recess of back taper, and the die orifice is located the bottom center of recess, and the die orifice outwards stands out the protruding portion that forms the beak form along the opening direction of recess, and the recess bottom is equipped with the dog and supports the protruding portion of die orifice. The utility model discloses low cigarette no steamed material extrusion tooling of wire and cable can prevent effectively that low cigarette no steamed material from extruding the long-pending material of in-process die orifice.

Description

Low-smoke halogen-free extrusion die for wires and cables

Technical Field

The utility model relates to a wire and cable extrusion molding technical field, concretely relates to low cigarette no steamed material extrusion tooling of wire and cable.

Background

With the development of the flame retardant technology of cable materials, novel flame retardant cables are also continuously generated, and the low-smoke low-halogen flame retardant cables and the low-smoke halogen-free flame retardant cables are developed from the original common flame retardant cables. This indicates that the demand for flame retardant cables has increased in recent years. In countries such as europe, america and japan, environment-friendly electric wires and cables have become the mainstream products of all cable varieties, and governments are strictly prohibited to use or import non-environment-friendly cables. Common flame retardant materials contain a large amount of halogen, a large amount of smoke and toxic corrosive hydrogen halide gas can be generated during combustion, and halogen-free flame retardance is mainly realized in polyolefin, so that low-smoke halogen-free cables are the main development trend at present. However, in the prior art, the phenomenon of material accumulation is easy to occur at the die orifice in the process of extruding the low-smoke halogen-free material, and the accumulated material can be attached to the wire to form small particles, thereby affecting the appearance of the low-smoke halogen-free material.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a low cigarette no steamed material extrusion tooling of wire and cable to the not enough of above-mentioned technique, can prevent effectively that low cigarette no steamed material from extruding the long-pending material of in-process die orifice.

In order to realize the above-mentioned purpose, the utility model discloses a low smoke and no steamed material extrusion tooling of wire and cable, be in including die body and division die orifice on the die body, the die body is located open the recess that has the back taper in one side of die orifice, the die orifice is located the bottom center of recess, the die orifice is followed the outside outstanding protruding portion that forms the beak form of opening direction of recess, preferably, the recess bottom is equipped with the dog and supports the protruding portion of die orifice improves the intensity of die orifice.

Preferably, the top end of the protruding part of the die is positioned in the groove, so that the phenomenon of material accumulation is further prevented.

Compared with the prior art, the utility model, have following advantage:

1. the bird-beak-shaped bulges are adopted, so that the accumulation condition of low-smoke halogen-free materials at the die opening is greatly reduced;

2. because the low-smoke halogen-free material is adopted, less toxic gas and smoke dust are released during combustion, and the harm to a human body is less;

3. simple structure and low cost.

Drawings

FIG. 1 is a schematic structural view of the low-smoke halogen-free extrusion die for electric wires and cables of the present invention;

fig. 2 is a schematic structural diagram of a low-smoke halogen-free extrusion die for a conventional wire and cable.

The components in the figures are numbered as follows:

die body 1, die orifice 2, recess 3, protruding portion 4, dog 5.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

As shown in fig. 1, the utility model discloses low smoke and halogen-free material extrusion tooling of electric wire and cable, including die body 1 and the die orifice 2 of opening on die body 1, compare with fig. 2, one side that die body 1 is located die orifice 2 is opened there is the recess 3 of back taper, and die orifice 2 is located the bottom center of recess 3, and die orifice 2 outwards stands out the protruding portion 4 that forms the beak form along recess 3's opening direction, and 4 tops of protruding portion of die orifice 2 are located recess 3, and 3 bottoms of recess are equipped with dog 5 and support protruding portion 4 of die orifice 2, improve the intensity of die orifice 2.

The utility model discloses during the use, low smoke no steamed material extrudes through die orifice 2, because the outside outstanding bird's beak form that forms of die orifice 2, and be located the 3 bottom centers of recess that have the back taper, has solved the problem of low smoke no steamed material at the long-pending material of extrusion in-process die orifice 2.

The die orifice 2 of the low-smoke halogen-free extrusion die for the wires and cables adopts the bird-beak-shaped bulge, so that the accumulation condition of the low-smoke halogen-free extrusion die orifice 2 is greatly reduced; moreover, because the low-smoke halogen-free material is adopted, less toxic gas and smoke dust are released during combustion, and the harm to the human body is less;

the utility model discloses simple structure, low cost, facilitate promotion.

Claims

1. The utility model provides a low smoke and no steamed material extrusion tooling of wire and cable, includes die body (1) and opens die orifice (2) on die body (1), its characterized in that: die body (1) is located open one side of die orifice (2) has recess (3) of back taper, die orifice (2) are located the bottom center of recess (3), die orifice (2) are followed the opening direction of recess (3) is outside outstanding and is formed beak form protruding portion (4), recess (3) bottom is equipped with dog (5) and supports protruding portion (4) of die orifice (2).

2. The low-smoke halogen-free extrusion die for the wires and cables as claimed in claim 1, which is characterized in that: the top end of the protruding part (4) of the die orifice (2) is positioned in the groove (3).