CN210705934U

CN210705934U - Nylon cable sheath extrusion die

Info

Publication number: CN210705934U
Application number: CN201921060801.1U
Authority: CN
Inventors: 王新刚; 孙振林; 刘培镇; 唐文川; 周建; 刘明全; 林晓峰; 王勇升
Original assignee: Guangzhou Nanyang Cable Co ltd
Current assignee: Guangzhou Nanyang cable group Co.,Ltd.
Priority date: 2019-07-08
Filing date: 2019-07-08
Publication date: 2020-06-09
Anticipated expiration: 2029-07-08

Abstract

The utility model discloses a nylon cable sheath extrusion tooling, including mold core and die sleeve, be equipped with the passageway of extruding that can supply the sizing material to extrude between mold core and the die sleeve, be equipped with the lining mould between mold core and the cable, be equipped with the arch that is used for keeping apart lining mould and mold core on the lining mould, the arch is located the die orifice department of mold core, bellied quantity is more than one, through jackscrew fixed connection between lining mould and the mold core, the row number that the arch set up is the multirow, the utility model provides a nylon cable sheath extrusion tooling sets up a lining mould in the mold core, should line the mould not with mold core direct contact, but through a plurality of archs of surface support in the mold core internal surface, greatly reduced sinle silk to the influence of die orifice department temperature, and then guarantee the temperature homogeneity of nylon in die orifice department. And the steel lining die has certain straightening function on the wire core, so that the production stability is greatly improved.

Description

Nylon cable sheath extrusion die

Technical Field

The utility model relates to a cable sheath extrusion tooling technical field, more specifically relates to a nylon cable sheath extrusion tooling.

Background

The cable sheath is a key structure for protecting the cable from physical damage, corrosion and moisture intrusion, and particularly, the cable sheath needs to have certain electrical properties, mechanical properties, weather resistance and the like. The nylon sheath has a plurality of excellent physical and chemical properties, such as: high mechanical strength, high hardness, excellent antiwear and antiwear performance, high tear resistance, excellent electric insulating performance, and high acid (including formic acid) and alkali resistance. The nylon is not widely applied in the wire and cable industry, is mainly used for power supply lines of low-voltage equipment of airplane lines and expressways, and has the voltage grade below 750V. The application is less in large-section and large-outer-diameter cables, and the sheath extrusion is not easy to realize on the large-section and large-outer-diameter cables mainly because the nylon production extrusion process performance is poor.

The nylon does not have the typical three-state characteristics of common plastics such as PE, PVC and the like along with the rise of temperature, namely, glass state, high-elasticity state and viscous state, but only has obvious glass state and viscous state, the temperature range of the high-elasticity state is extremely narrow and is about 2 ℃, the high-elasticity state is the key state of cable sheath extrusion molding, and the temperature control and the uniformity of the nylon in a die opening region are particularly critical. The nylon is rapidly changed from a high elastic state to a solid state when extruded to reach a die orifice area, so that the inner diameter of a die core of a common nylon extrusion die is only slightly larger than the outer diameter of a cable for better extrusion effect.

However, in the actual production process, the cable core is often not completely straight in the axial direction and has irregular bending. When the wire core passes through the die opening die core, the 'cutting die' often appears, and after the moving wire core contacts the die core, the heat of the die core can be taken away, so that the temperature of the die core is reduced.

SUMMERY OF THE UTILITY MODEL

It so to have an inspection, the utility model provides a can reduce sinle silk to die core mouth department temperature, can be to the alignment of sinle silk, produce reliable and stable nylon cable sheath extrusion tooling.

In order to solve the problem, the utility model adopts the following technical scheme:

the nylon cable sheath extrusion die comprises a die core and a die sleeve, wherein an extrusion channel for extruding a sizing material is arranged between the die core and the die sleeve, a lining die is arranged between the die core and a cable, and a bulge for isolating the lining die from the die core is arranged on the lining die.

Preferably, the protrusion is located at a die opening of the die core.

Preferably, the number of the protrusions is more than one.

Preferably, the lining die and the die core are fixedly connected through a jackscrew.

Preferably, the jackscrew is located at one end of the mold core away from the mold opening.

Preferably, the protrusions are arranged in a plurality of rows.

Preferably, the lining die is made of a steel material.

Preferably, the outer diameter of the lining die is larger than the outer diameter of the cable.

The utility model provides a nylon cable sheath extrusion tooling is through being equipped with the lining mould between mold core and cable, be equipped with the arch that is used for keeping apart lining mould and mold core on the lining mould, avoid mold core and cable direct contact, greatly reduced cable prevents to extrude the sizing material in the passageway and receives the influence because of temperature variation to the influence of mold core mouth department temperature, and the steel lining mould has certain alignment effect to the sinle silk, improves production stability greatly.

Drawings

Fig. 1 is a schematic structural view of a nylon cable sheath extrusion die provided by the present invention;

fig. 2 is a partial enlarged view of the nylon cable sheath extrusion mold provided by the utility model.

In the figure: 1. the die comprises a die core, 2 parts of a die sleeve, 3 parts of an extrusion channel, 4 parts of a lining die, 5 parts of bulges and 6 parts of jackscrews.

Detailed Description

It is right to combine below attached figure 1 to attached figure 2 the utility model discloses further explain, a nylon cable sheath extrusion tooling, including mold core 1 and die sleeve 2, be equipped with the passageway 3 of extruding that can supply the sizing material to extrude between mold core 1 and the die sleeve 2, be equipped with lining mould 4 between mold core 1 and the cable, be equipped with the arch 5 that is used for keeping apart lining mould 4 and mold core 1 on the lining mould 4, arch 5 is located the die orifice department of mold core 1, avoids mold core 1 and cable direct contact, and greatly reduced cable is to the influence of the temperature of die orifice department of mold core 1, prevents to extrude the sizing material in the passageway 3 and receives the influence because of temperature variation, and then improves the quality of cable sheath.

The quantity of arch 5 is more than one, the row number that arch 5 set up is the multirow, ensures to support the mold core, improves the stability in the production process.

The lining die 4 is fixedly connected with the die core 1 through the jackscrew 6, and the jackscrew 6 is located at one end, far away from a die opening, of the die core 1, so that the lining die 4 cannot fall off in the production process, and production is not affected.

The lining die 4 is made of steel materials, the outer diameter of the lining die 4 is larger than that of the cable, the steel lining die has a certain straightening effect on the cable core, and production stability is greatly improved.

Although the present invention has been described with reference to particular embodiments, such description is not intended to be construed in a limiting sense. Other variations of the disclosed embodiments, as would be appreciated by those skilled in the art, are contemplated by reference to the description of the invention and are intended to be within the scope of the following claims.

Claims

1. The utility model provides a nylon cable sheath extrusion tooling which characterized in that: the cable extrusion die comprises a die core (1) and a die sleeve (2), an extrusion channel (3) for extruding a sizing material is arranged between the die core (1) and the die sleeve (2), a lining die (4) is arranged between the die core (1) and a cable, and a bulge (5) for isolating the lining die (4) from the die core (1) is arranged on the lining die (4).

2. The nylon cable sheath extrusion die of claim 1, wherein: the bulge (5) is positioned at the die orifice of the die core (1).

3. The nylon cable sheath extrusion die of claim 1, wherein: the number of the bulges (5) is more than one.

4. The nylon cable sheath extrusion die of claim 1, wherein: the lining die (4) is fixedly connected with the die core (1) through a jackscrew (6).

5. The nylon cable sheath extrusion die of claim 4, wherein: the jackscrew (6) is positioned at one end of the mold core (1) far away from the mold opening.

6. The nylon cable sheath extrusion die of claim 1, wherein: the number of rows of the protrusions (5) is multiple.

7. The nylon cable sheath extrusion die of claim 1, wherein: the lining die (4) is made of steel materials.

8. The nylon cable sheath extrusion die of claim 1, wherein: the outer diameter of the lining die (4) is larger than that of the cable.