CN215242751U

CN215242751U - Extrusion type die for improving layering of low-smoke halogen-free electronic wire

Info

Publication number: CN215242751U
Application number: CN202120969661.0U
Authority: CN
Inventors: 安富涛
Original assignee: LTK Electric Wire Huizhou Co Ltd; LTK Electric Wire Changzhou Co Ltd
Current assignee: LTK Electric Wire Huizhou Co Ltd; LTK Electric Wire Changzhou Co Ltd
Priority date: 2021-05-08
Filing date: 2021-05-08
Publication date: 2021-12-21
Anticipated expiration: 2031-05-08

Abstract

The utility model discloses an improve extrusion formula mould of low smoke and zero halogen electron line layering, including extruding the subassembly, extruding the subassembly and installing on the extruder head, extruding the subassembly and including inner mold core and outer die sleeve, outer die sleeve side runs through to open there is outer extrusion hole, outer extrusion hole divide into outer discharge opening, outer tensile hole and outer feed port from a left side to the right side, the inner mold core left end sets up in outer feed port and outer die sleeve cooperation clearance mounting, the outer side of the left half section of inner mold core sets up the extrusion angle of toper structure, the outer side of the right half section of inner mold core sets up the angle of letting of toper structure, the inner mold core is run through from left to right in the inner mold core and is opened inner layer extrusion hole, the inner layer extrusion hole divide into inner layer discharge opening, inner layer tensile hole and inner layer feed port from a left side to right side; the left side section of the inner mold core is provided with the extrusion hole in a tapered structure, and the angle of the extrusion hole and the angle of the outer layer feeding hole form an angle difference of 11-18 degrees, so that decompression is realized, and layering caused by excessive extrusion is avoided.

Description

Extrusion type die for improving layering of low-smoke halogen-free electronic wire

Technical Field

The utility model belongs to the technical field of there is not steamed electronic wire production, concretely relates to improve extrusion formula mould of low smoke and zero halogen electronic wire layering.

Background

The low-smoke halogen-free electronic wire is introduced by an electronic wire, meets the environmental protection requirement under the EU ROHS standard, and is generally used for weak current engineering, such as internal connection of electronic and electrical equipment and the like.

In the processing process of the low-smoke halogen-free electronic wire, a series of procedures such as cutting, peeling and tin soldering are needed, and due to the characteristics of materials, the materials with lower melt index are easy to delaminate, so that a user can remain rubber during processing, and the processing of tin soldering cannot be performed. The extrusion die commonly used at present has three types, extrusion tube type, semi-extrusion type and extrusion type, and because of material characteristics and customer product requirements, insulation and conductors need to be extruded and compacted, the extrusion tube type is not suitable for use, and the semi-extrusion type can not be used due to the adjustment problem of the concentricity of the wire rod produced by the U7 adjustment-free machine head.

At present, the common die cores are an extrusion type internal die with an external taper angle of 60 degrees and a matched extrusion type external die with an internal taper angle of 60 degrees, and due to the fact that the die pressure is too large, the inner layer rubber material is subjected to the excessive extrusion of the outer layer to generate reaction force, so that layering occurs, and a layer of residue still exists during the peeling process of a client.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a following technical scheme:

the utility model provides an improve extrusion formula mould of low smoke and zero halogen electronic wire layering, is including extruding the subassembly, extrude the unit mount on the extruder head, it includes interior mold core and outer die sleeve to extrude the subassembly, outer die sleeve side runs through to open has outer extrusion hole, outer extrusion hole divide into outer discharge opening, outer tensile hole and outer feed port from a left side to the right side, interior mold core left end sets up in outer feed port and outer die sleeve cooperation clearance mounting, the half section outside in interior mold core left side sets up the extrusion angle of toper structure, the half section outside in interior mold core right side sets up the position angle of letting of toper structure, it has the inlayer to run through to open in the interior mold core left and right sides, the hole is extruded to the inlayer and is divided into inlayer discharge opening, inlayer tensile hole and inlayer feed port from a left side to the right side to the inlayer.

Preferably, the outer layer feeding hole is a tapered hole, the large end of the tapered hole faces to the right, the small end of the tapered hole is connected to the outer layer stretching hole towards the left, and the taper angle is set to be 59-61 degrees.

Preferably, the outer layer stretching hole is a conical hole, the large end is connected with the outer layer feeding hole, the small end is connected with the outer layer discharging hole, and the conical angle is set to be 6-8 degrees.

Preferably, the inner layer stretching hole is a conical hole, the large end is connected with the inner layer feeding hole, and the small end is connected with the inner layer discharging hole.

Preferably, the extrusion angle is matched with the taper angle of the outer layer feeding hole, and the angle of the extrusion angle ranges from 43 degrees to 48 degrees.

Preferably, the relief angle is in the range of 16 ° to 18 °.

The utility model has the advantages that:

1. according to the die, the left side section of the inner die core is provided with the extrusion hole with a conical structure, and an angle difference of 11-18 degrees is formed between the angle of the extrusion hole and the angle of the outer layer feeding hole, so that pressure reduction is realized, and delamination caused by excessive extrusion is avoided;

2. this mould sets up the right half section outside of interior mold core and becomes the toper of 16 to 18 and lets the position angle, and the total length setting of outer die sleeve is less than the total length of interior mold core, avoids outer die sleeve and the eccentric center that interior mold core distance is too near or too far to cause, makes the cable extrude badly, thereby produces the damage with outer die sleeve when just avoiding interior mold core overlength to use.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic structural view of an outer mold shell according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of an inner core according to an embodiment of the present invention;

the embodiment of the utility model provides a mainly contain following element symbol:

the die comprises an outer die sleeve-1, an outer layer extrusion hole-2, an outer layer discharge hole-201, an outer layer stretching hole-202, an outer layer feed hole-203, an inner die core-3, an extrusion angle-301, a abdication angle-302, an inner layer extrusion hole-4, an inner layer discharge hole-401, an inner layer stretching hole-402 and an inner layer feed hole-403.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 3, an extrusion die for improving lamination of a low smoke zero halogen electronic wire comprises an extrusion assembly, the extrusion assembly is arranged on a machine head of the extruder and comprises an inner die core 3 and an outer die sleeve 1, an outer layer extrusion hole 2 penetrates through the side surface of the outer die sleeve 1, the outer layer extrusion hole 2 is divided into an outer layer discharge hole 201, an outer layer stretching hole 202 and an outer layer feeding hole 203 from left to right, the left end of the inner mold core 3 is arranged in the outer layer feed hole 203 and is installed with the outer mold sleeve 1 in a matching clearance way, the outer side of the left half section of the inner mold core 3 is provided with an extrusion angle 301 with a conical structure, the outer side of the right half section of the inner mold core 3 is provided with a abdication angle 302 with a conical structure, an inner layer extrusion hole 4 penetrates through the inner mold core 3 from left to right, and the inner layer extrusion hole 4 is divided into an inner layer discharge hole 401, an inner layer stretching hole 402 and an inner layer feeding hole 403 from left to right.

The outer layer feed holes 203 are tapered holes with the large end facing right and the small end facing left and connected to the outer layer drawing holes 202, and the taper angle is set to 59 ° to 61 °.

The left section of the inner mold core 3 is provided with the extrusion hole with a tapered structure, and the angle of the extrusion hole and the angle of the outer layer feeding hole 203 form an angle difference of 11 degrees to 18 degrees, so that decompression is realized, and delamination caused by excessive extrusion is avoided.

The outer layer stretching hole 202 is a conical hole, the large end is connected with the outer layer feeding hole 203, the small end is connected with the outer layer discharging hole 201, and the cone angle is set to be 6-8 degrees; the inner layer stretching hole 402 is a conical hole, the large end is connected with the inner layer feeding hole 403, and the small end is connected with the inner layer discharging hole 401; the extrusion angle 301 is matched with the taper angle of the outer layer feeding hole 203, and the angle range of the extrusion angle 301 is between 43 degrees and 48 degrees; the angle of the relief angle 302 ranges from 16 ° to 18 °; the length of the inner mold core 3 is larger than that of the outer mold sleeve 1.

This mould sets up the right half section outside of interior mold core 3 and becomes the toper of 16 to 18 and lets the position angle 302, and the total length setting of outer die sleeve 1 is less than the total length of interior mold core 3, avoids outer die sleeve 1 and interior mold core 3 distance too near or the off-centre that causes far away, makes the cable extrude badly, thereby collides the damage with outer die sleeve 1 when just avoiding interior mold core 3 overlength to use.

This mould is when producing the use, install the crowded exit at the extruder head inlayer with inner mold core 3 earlier, outer die sleeve 1 cover is fixed on the extruder head in the 3 outsides of inner mold core, and debug during the installation for outer feed port 203 and extrusion angle 301 position cooperation and terminal surface contactless, reserve outer feeding clearance, begin to annotate the material through the extruder, the inlayer material gets into the back through inlayer feed port 403, diminish the extrusion of inlayer core diameter through the tensile hole 402 of inlayer gradually, extrude as the inlayer through the shaping of inlayer discharge port 401, the skin is through the clearance feeding between outer feed port 203 and the angle of stepping down 302, after adjusting the diameter through outer tensile hole 202, realize the parcel at inner mold core 3 left end and inlayer, extrude after the tight parcel of rethread outer discharge port 201 is pushed, improve the smooth finish on wire rod surface simultaneously.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an improve extrusion formula mould of low smoke and zero halogen electron line layering, includes the extrusion subassembly, the extrusion subassembly is installed on the extruder head, its characterized in that: the extrusion assembly comprises an inner die core and an outer die sleeve, wherein an outer layer extrusion hole penetrates through the side face of the outer die sleeve, the outer layer extrusion hole is divided into an outer layer discharge hole, an outer layer stretching hole and an outer layer feeding hole from left to right, the left end of the inner die core is arranged in the outer layer feeding hole and is installed in the outer die sleeve in a matching clearance mode, an extrusion angle of a conical structure is arranged on the outer side of the left half section of the inner die core, a yielding angle of the conical structure is arranged on the outer side of the right half section of the inner die core, an inner layer extrusion hole penetrates through the inner die core from left to right, and the inner layer extrusion hole is divided into an inner layer discharge hole, an inner layer stretching hole and an inner layer feeding hole from left to right.

2. The extrusion die of claim 1, wherein: the outer layer feed hole is a tapered hole, the large end faces to the right, the small end faces to the left and is connected to the outer layer stretching hole, and the taper angle is set to be 59-61 degrees.

3. The extrusion die of claim 2, wherein: the outer layer stretching hole is a conical hole, the large end is connected with the outer layer feeding hole, the small end is connected with the outer layer discharging hole, and the conical angle is set to be 6-8 degrees.

4. The extrusion die of claim 3, wherein: the inner layer stretching hole is a conical hole, the large end is connected with the inner layer feeding hole, and the small end is connected with the inner layer discharging hole.

5. The extrusion die of claim 4, wherein: the extrusion angle is matched with the taper angle of the outer layer feeding hole, and the angle range of the extrusion angle is between 43 degrees and 48 degrees.

6. The extrusion die of claim 5, wherein: the angle of the let angle ranges from 16 ° to 18 °.