CN2598106Y

CN2598106Y - Low-smoke halogen-less and low-halogen thield sleeve extruding mould

Info

Publication number: CN2598106Y
Application number: CNU03204092XU
Authority: CN
Inventors: 郑保忠; 郑顺山; 温尚海; 李继涛; 王福志; 赵占红
Original assignee: BAOFENG CABLE Co Ltd HEBEI PROV
Current assignee: BAOFENG CABLE Co Ltd HEBEI PROV
Priority date: 2003-02-13
Filing date: 2003-02-13
Publication date: 2004-01-07
Anticipated expiration: 2013-02-13

Abstract

The utility model discloses an extrusion mould of low-smoke non-halogen and low-smoke low-halogen jacket, comprising a mould sleeve and a mould core; wherein, the mould core is arranged in the mould sleeve; the inner diameter of the mould sleeve is equal to the outside diameter of the mould core plus twice thickness of the jacket and 2 to 4 millimeters; the axle diameter of the mould body is 2 to 4 millimeters; and the engaging angle between the mould sleeve and the mould core is 0 to 3 degrees. The utility model is simple in process and common in raw materials; when in the manufacturing of the jacket, the rupture of the glue, the instability of the air and the material flow can be avoided; moreover, the cable is feasible in mass production and convenient in dismounting, and the products are all in good quality.

Description

A kind of novel low smoke and zero halogen and low-smoke low-halogen jacket extrusion mould

One, technical field

The utility model discloses a kind of cable extrusion die, more particularly, disclose a kind of novel low smoke and zero halogen and low-smoke low-halogen cable cover(ing) extrusion die.

Two, background technology

Low smoke and zero halogen and low smoke and low halogen cable are called as " green product ", its constituent material is nuisanceless, pollution-free, do not produce noxious substance in the use, when burning, do not produce thick smoke and toxic gas, non-environmental-pollution, thereby have wide market prospects, and obvious social and economic benefit, so low smoke and zero halogen and low smoke and low halogen cable become the product of domestic each cable factory's focus development.

Process from development of the same trade, it is quite big that cable cover(ing) extrudes difficulty, and particularly the Mould design aspect is difficult to reach the requirement that extrudes qualified cable cover(ing), phenomenons such as disconnected glue, pore, materials flow instability often appear in product, have a strong impact on the quality and the Application and Development of product.

Three, summary of the invention

In view of this, the purpose of this utility model provide a kind of Mould Machining simple, phenomenons such as disconnected glue, pore, materials flow instability can not appear when extruding sheath, and cable jacket smooth surface, imperforate novel low smoke and zero halogen and low-smoke low-halogen jacket extrusion mould.

For achieving the above object, the technical solution of the utility model is: described novel low smoke and zero halogen and low-smoke low-halogen jacket extrusion mould, comprise die sleeve and core rod, core rod is placed among the die sleeve, the die sleeve internal diameter is the jacket thickness that core rod mouth external diameter adds twice, add 2～4 millimeters, the diameter region of die sleeve is 2～4 millimeters, pressure angle between die sleeve and the core rod is 0～3 °, draw ratio is 1.5～2.0, and core rod internal diameter and outside diameter of cable gap are 2～6 millimeters, and core rod mouth wall thickness is 1.5～2 millimeters, and core rod does not have the line of holding footpath, is plsitive mold.

Mould Machining of the present utility model is simple, and raw material are common; Phenomenons such as disconnected glue, pore, materials flow instability can not appear when extruding sheath; The cable jacket smooth surface pimple, pore can not occur; Cable cover(ing) and cable core parcel closely pine cover phenomenon can not occur; And cable that can production lot, easy accessibility can not produce any quality problems that cause because of the mould problem.

Four, description of drawings

Fig. 1 is a mould sectional arrangement drawing of the present utility model.

Fig. 2 is the right view of the utility model core rod.

In Fig. 1 and Fig. 2, symbol 1 is represented die sleeve, and symbol 2 is represented core rod.

Five, embodiment

Below in conjunction with drawings and Examples the utility model is elaborated.

With reference to figure 1 and Fig. 2, novel low smoke and zero halogen of the present utility model and low-smoke low-halogen jacket extrusion mould, comprise die sleeve 1 and core rod 2, core rod 2 is placed among the die sleeve 1, the die sleeve internal diameter is the jacket thickness that core rod mouth external diameter adds twice, add 2～4 millimeters, the diameter region of die sleeve is 2～4 millimeters, is 2～3 millimeters preferably; Materials flow pressure between die sleeve and the core rod is the smaller the better, and the pressure angle between die sleeve and the core rod should be controlled at 0～3 °, and draw ratio is 1.5～2.0, core rod internal diameter and outside diameter of cable gap are 2～6 millimeters, core rod mouth wall thickness is 1.5～2 millimeters, and core rod do not have the line of holding footpath, is plsitive mold.

Die sleeve cooperates with core rod when adjusting, and core rod will align with die sleeve or core rod is drawn back 1～2 millimeter, will vacuumize when extruding, so that sheath and cable core parcel are closely, in order to avoid sheath pine cover, extruder temperature is controlled between 140～170 ℃.

Claims

1, a kind of novel low smoke and zero halogen and low-smoke low-halogen jacket extrusion mould, comprise die sleeve and core rod, it is characterized in that core rod is placed among the die sleeve, the die sleeve internal diameter is the jacket thickness that core rod mouth external diameter adds twice, add 2～4 millimeters, the diameter region of die sleeve is 2～4 millimeters, and the pressure angle between die sleeve and the core rod is 0～3 °.

2, low smoke and zero halogen as claimed in claim 1 and low-smoke low-halogen jacket extrusion mould is characterized in that draw ratio is 1.5～2.0.

3, low smoke and zero halogen as claimed in claim 1 and low-smoke low-halogen jacket extrusion mould is characterized in that core rod internal diameter and outside diameter of cable gap are 2～6 millimeters, and core rod mouth wall thickness is 1.5～2 millimeters.

4, low smoke and zero halogen as claimed in claim 1 and low-smoke low-halogen jacket extrusion mould is characterized in that core rod does not have the line of holding footpath, is plsitive mold.