CN218241446U

CN218241446U - Cable mineral substance insulating layer uniform extruder

Info

Publication number: CN218241446U
Application number: CN202222377501.4U
Authority: CN
Inventors: 朱恒奎; 陈静; 陈浩
Original assignee: Hubei Hongqi Huicheng Cable Co ltd
Current assignee: Hubei Hongqi Huicheng Cable Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-01-06
Anticipated expiration: 2032-09-07

Abstract

The utility model provides a cable mineral substance insulating layer uniform extrusion machine, agitating unit's terminal lower part is equipped with extrusion device, extrusion device is connected with the surrounding type section mould, be equipped with the cable passageway that is used for the cable to pass through that link up on the surrounding type section mould, be equipped with in the extrusion device and extrude the twin-screw, extrude the twin-screw terminal extrusion honeycomb duct that is equipped with from top to bottom, the surrounding type section mould is equipped with annular water conservancy diversion way in the radial position that corresponds with extrusion device, extrude honeycomb duct and annular water conservancy diversion way UNICOM, annular water conservancy diversion way circumference evenly distributed has the discharge gate towards the axle center, discharge gate and cable passageway UNICOM. Through the arrangement of the annular flow guide channel and the discharge port, the mixture extruded from the tail end of the extruded double screw does not directly enter the cable channel, but enters the annular flow guide channel firstly, and after the annular flow guide channel is filled with the mixture around a circle, the mixture enters the cable channel from the discharge port uniformly distributed circumferentially due to extrusion pressure, so that uniform wrapping in the circumferential direction of the cable is realized, and uniform wrapping on the cable is realized along with advancing of the cable.

Description

Cable mineral insulating layer uniform extruder

Technical Field

The utility model relates to a cable manufacture equipment technical field, especially an even extruder of cable mineral insulating layer.

Background

In the manufacturing technology of fireproof cable, it is present general technique to wrap up one deck mineral substance insulating layer again outside the cable insulating layer, and the mixing of practical mineral substance inorganic matter provides thermal-insulated protection for the cable, can improve the fire behavior of cable greatly.

The mineral insulating layer is generally prepared by an extrusion process, mixing mineral raw materials, adding water, stirring, wrapping the outer side of the cable by an extruder, and heating and curing to form a mineral layer wrapping the cable by one circle. However, the mineral substance extruded by the existing extruder is tightly wrapped on the cable in the die due to extrusion pressure, the mineral substance density on one side of the extruder is high, the mineral substance density on the side far away from the side of the extruder is low, and the mineral substance is heated and cured in sections through a plurality of sections of electric heating wires arranged at the rear end of the extruder during heating, so that the phenomenon of uneven curing or incomplete curing is often generated.

Disclosure of Invention

The utility model aims to solve the technical problem that an even extruder of cable mineral matter insulating layer is provided, formation mineral matter isolation layer that can be even and even solidification.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

the utility model provides a cable mineral matter insulating layer uniform extrusion machine, including agitating unit, agitating unit's terminal lower part is equipped with extrusion device, extrusion device is connected with the surrounding type section mould, be equipped with the cable passageway that is used for the cable to pass through that link up on the surrounding type section mould, be equipped with in the extrusion device and extrude the twin-screw, it extrudes the honeycomb duct to extrude the twin-screw end to be equipped with from top to bottom, the surrounding type mould is equipped with annular water conservancy diversion way in the radial position that corresponds with extrusion device, extrude honeycomb duct and annular water conservancy diversion way UNICOM, annular water conservancy diversion way circumference evenly distributed has the discharge gate towards the axle center, discharge gate and cable passageway UNICOM.

The heating device is arranged behind the annular guide channel along the routing direction of the cable to be processed at one end of the outer side of the encircling section mould.

The front and the back of the heating device are respectively provided with one heating device and are electrically connected with the spiral electric heating wires surrounding the inside of the forming die.

Foretell agitating unit upper end is equipped with feed inlet and water inlet, and agitating unit one end is equipped with stirring transmission motor and is connected with inside spiral stirring transmission stick, and agitating unit is inside terminal to be linked together with extrusion device.

The extrusion motor is arranged at one end of the extrusion device, the extrusion cavity is formed in the extrusion device, the extrusion double screws are arranged in the extrusion cavity, the extrusion motor is connected with one of the extrusion double screws, and the front end of the extrusion cavity is communicated with the tail end of the stirring device.

The tail end of the screw of the extruding double screw is provided with an extruding head, and the section of the extruding head is in an elliptical partial shape.

The utility model provides a pair of even extruder of cable mineral matter insulating layer, through the setting of annular water conservancy diversion way and discharge gate for the mixture of extruding the terminal extrusion of twin-screw does not directly enter into the cable passageway, but gets into annular water conservancy diversion way earlier, is full of in the annular water conservancy diversion way and gets into the cable passageway because extrusion pressure gets into from the discharge gate of even circumference distribution after encircleing a week, thereby has realized the even parcel of cable circumferencial direction, and along with even parcel one on the realization cable that advances of cable.

Drawings

The invention will be further described with reference to the following drawings and examples:

fig. 1 is a first schematic structural diagram of the present invention;

FIG. 2 is a second schematic structural view of the present invention;

FIG. 3 isbase:Sub>A cross-sectional view A-A of FIG. 1;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

fig. 5 is a schematic diagram of the structure of an extruded twin screw.

In the figure: the device comprises a stirring device 1, a feeding hole 2, a water inlet 3, a stirring transmission motor 4, an extrusion device 5, an extrusion motor 6, a circular forming die 7, a heating device 8, a cable channel 9, an annular flow guide channel 10, a discharging hole 11, a spiral heating wire 12, an extrusion cavity 13, an extrusion double screw 14, an extrusion flow guide pipe 15, a spiral stirring transmission rod 16 and an extrusion head 17.

Detailed Description

As shown in fig. 1-5, a cable mineral insulating layer uniform extruder comprises a stirring device 1, an extruding device 5 is arranged at the lower part of the tail end of the stirring device 1, the extruding device 5 is connected with a surrounding forming die 7, a cable channel 9 for passing through cables is arranged on the surrounding forming die 7, an extruding twin-screw 14 is arranged in the extruding device 5, an extruding guide pipe 15 is arranged at the upper part and the lower part of the tail end of the extruding twin-screw 14, an annular guide channel 10 is arranged at the radial position corresponding to the extruding device 5 on the surrounding forming die 7, the extruding guide pipe 15 is communicated with the annular guide channel 10, discharge ports 11 facing to the axis are uniformly distributed on the circumference of the annular guide channel 10, and the discharge ports 11 are communicated with the cable channel 9.

Through the arrangement of the annular flow guide channel 10 and the discharge hole 11, the mixture extruded from the tail end of the extruding double screw 14 does not directly enter the cable channel 9, but enters the annular flow guide channel 10 firstly, and after the annular flow guide channel 10 is fully surrounded by a circle, the mixture enters the cable channel 9 from the discharge hole 11 uniformly distributed circumferentially due to extrusion pressure, so that uniform wrapping in the circumferential direction of the cable is realized, and uniform wrapping on the cable is realized along with the advancing of the cable.

Different from the existing extrusion device, the cable is directly wrapped from one end of the circular mould 7 after extrusion, so that the wrapping material close to one end of the extrusion device is more and has high density, and the material far away from the extrusion device is less and has low density.

The heating device 8 is arranged behind the annular guide channel 10 along the routing direction of the cable to be processed at one end of the outer side of the encircling type die 7.

The heating devices 8 are respectively arranged at the front and the back and are electrically connected with a spiral heating wire 12 which is wound in the section mould 7.

Through the heating wire of spiral arrangement for the mineral substance parcel layer after extruding is in heating solidification always, and all is heated around the parcel layer, makes curing process even, can promote the solidification effect.

Foretell 1 upper end of agitating unit is equipped with feed inlet 2 and water inlet 3, and 1 one end of agitating unit is equipped with stirring transmission motor 4 and is connected with inside spiral

stirring transmission stick

16, and 1 inside end of agitating unit is with 5 UNICOMs of extrusion device.

The spiral stirring and conveying rod 16 realizes the function of conveying towards the extruding device 5 while stirring.

One end of the extruding device 5 is provided with an extruding motor 6, an extruding cavity 13 is arranged in the extruding device 5, an extruding double screw 14 is arranged in the extruding cavity 13, the extruding motor 6 is connected with one of the extruding double screws 14, and the front end of the extruding cavity 13 is communicated with the tail end of the stirring device 1.

The mixed material falling from the front part is brought to the front part through the double-screw mechanism, the extrusion effect between the double screws is utilized to realize pressurization on the material, and the material entering the extrusion cavity 13 is continuously extruded forwards through the small clearance fit between the double screws and the extrusion cavity 13 and cannot converge to the rear part.

The screw end of the extruding twin screw 14 is provided with an extruding head 17, and the section of the extruding head 17 is in an elliptical partial shape.

The material extruded from the rear end cannot be obstructed with the extrusion head 17 due to the shape of the extrusion head 17, and the extrusion of the material is facilitated.

Claims

1. The utility model provides a cable mineral substance insulating layer uniform extrusion machine which characterized by: the device comprises a stirring device (1), wherein an extruding device (5) is arranged at the lower part of the tail end of the stirring device (1), the extruding device (5) is connected with an encircling forming die (7), a through cable channel (9) for a cable to pass through is arranged on the encircling forming die (7), an extruding double screw (14) is arranged in the extruding device (5), an extruding guide pipe (15) is arranged at the upper part and the lower part of the tail end of the extruding double screw (14), an annular guide channel (10) is arranged at the radial position corresponding to the extruding device (5) in the encircling forming die (7), the extruding guide pipe (15) is communicated with the annular guide channel (10), discharge holes (11) facing to the axis are uniformly distributed on the circumference of the annular guide channel (10), and the discharge holes (11) are communicated with the cable channel (9).

2. The cable mineral insulation uniform extruder as claimed in claim 1, wherein a heating device (8) is arranged at one end of the outer side of the encircling forming die (7) behind the annular flow guide (10) along the routing direction of the cable to be processed.

3. The machine for the uniform extrusion of mineral insulation of cables according to claim 2, characterised in that said heating means (8) are provided one at each of the front and rear and are electrically connected to the helical heating wires (12) which surround the inside of the mould (7).

4. The cable mineral insulating layer uniform extruder as claimed in claim 3, wherein the upper end of the stirring device (1) is provided with a feed inlet (2) and a water inlet (3), one end of the stirring device (1) is provided with a stirring transmission motor (4) and is connected with an internal spiral stirring transmission rod (16), and the internal end of the stirring device (1) is communicated with the extruding device (5).

5. The cable mineral insulating layer uniform extruder as claimed in claim 4, wherein one end of the extruding device (5) is provided with an extruding motor (6), an extruding cavity (13) is arranged in the extruding device (5), the extruding twin screws (14) are arranged in the extruding cavity (13), the extruding motor (6) is connected with one of the extruding twin screws (14), and the front end of the extruding cavity (13) is communicated with the tail end of the stirring device (1).

6. The machine for the uniform extrusion of cable mineral insulation according to claim 5, characterized in that the screw ends of the extruding twin screws (14) are provided with extruding heads (17), and the cross section of the extruding heads (17) is in the shape of an oval part.