CN218256676U - Flexible fatigue-resistant composite die for cable insulation sheath extrusion molding - Google Patents

Abstract

The utility model relates to a flexible fatigue-resistant composite die for extrusion molding of cable insulation sheaths, which comprises a die sleeve body, wherein the die sleeve body is provided with a containing cavity which runs through the die sleeve body in the front-back direction, the containing cavity forms an outlet at the front end of the die sleeve body, the containing cavity forms an inlet at the back end, polytetrafluoroethylene is embedded in the die sleeve body, and the polytetrafluoroethylene is close to the outlet; the utility model discloses simple structure, design benefit inlays polytetrafluoroethylene through the exit at the die sleeve body, and the cable surface of producing is smooth, luminance increases, effect such as thickness stability.

Description

Flexible fatigue-resistant composite die for cable insulation sheath extrusion molding

Technical Field

The utility model belongs to the technical field of the cable corollary equipment device, especially, relate to a flexible compound mould of nai fatigue of cable insulation sheath extrusion molding.

Background

Traditional cable extrusion molding mould is metal material for the owner, the reason is that metal mold is especially copper, iron, advantages such as heat conduction time such as steel are short, the hardness is strong, have certain plasticity, fatigue resistance is good, but also just because heat conductivity is good, the radiating rate of mould is also fast in process of production, because the production speed promotes the in-process again, along with the promotion of speed goes out gluey speed and increases, the temperature on mould mouth surface also can be taken away by corresponding, cause the temperature to descend to some extent, appear the micelle, phenomenons such as surface gloss decline, the finished product surface of reproducing is dull and lusterless, granule can appear because of the change of temperature appearance small amplitude during long-time production, the flocculus causes cable sheath thickness nonconforming easily, cause whole cable unable use or have the flaw.

In view of the above technical problems, improvements are needed.

SUMMERY OF THE UTILITY MODEL

The utility model relates to an overcome the defect among the above-mentioned prior art, provide a simple structure, design benefit increases stability and the continuation in the production process of cable, avoids the flexible compound mould of nai fatigue of cable insulation sheath extrusion molding because of the surface flaw that long-time production appears.

In order to achieve the above purpose, the utility model adopts the technical scheme that: the utility model provides a flexible antifatigue composite die of cable insulation sheath extrusion molding, includes the die sleeve body, the die sleeve body has the chamber that holds that runs through the die sleeve body in the front and back orientation to should hold the chamber and be in the front end of die sleeve body forms the export, and the rear end forms the import, and it has polytetrafluoroethylene to inlay in the die sleeve body, and this polytetrafluoroethylene is close to the exit.

As an optimal scheme of the utility model, a plurality of countersunk head bolts are installed to the die sleeve body, and a plurality of countersunk head bolts are used for inlaying polytetrafluoroethylene and export out.

As a preferred scheme of the utility model, countersunk bolt is provided with four, and the circumference equidistance is laid in the die sleeve originally internally.

As an optimized proposal of the utility model, the outer end face of the polytetrafluoroethylene and the outer end face of the die sleeve body close to the outlet are on the same horizontal plane.

As an optimal proposal of the utility model, the die sleeve body is a 40cr plate.

As an optimized proposal of the utility model, the inlet of the die sleeve body is a chamfer module port with a horn-shaped structure.

As a preferred scheme of the utility model, the die sleeve body comprises a first die body and a second die body; the first die body and the second die body are fixedly connected and integrally formed.

As an optimized scheme of the utility model, first die body and second die body are step-like structure.

As a preferred scheme of the utility model, the length of the first die body is 1/2 ~ 2/3 of the length of the second die body.

As an optimized scheme of the utility model, second die body up end and countersunk head bolt's up end are on same horizontal plane.

The utility model has the advantages that:

1. the utility model discloses simple structure, design benefit inlays polytetrafluoroethylene through the exit at the die sleeve body, and the cable surface of producing is smooth, luminance increases, effect such as thickness stability.

2. The utility model discloses a prolong the current structural design theory of cable extrusion molding mould, according to the insulating of cable and the operation requirement of sheath extrusion molding mould and the data parameter of extruding machine smart machine, optimize the structure of cable extrusion molding mould, the smooth finish that uses the mould cover that polytetrafluoroethylene bushing made can improve extruded cable or insulating surface, improve the outward appearance of cable, the mould core of different specifications can share a mould cover again, can save a large amount of materials and process time, showing reduce cost; the number of times of changing the specification is reduced, and the pulling and assembling are convenient and efficient.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

reference numbers in the figures: the die sleeve comprises a die sleeve body 1, an accommodating cavity 2, an outlet 3, an inlet 4, polytetrafluoroethylene 5, a countersunk head bolt 6, a first die body 10 and a second die body 11.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The embodiment is as follows:

as shown in fig. 1, for the utility model discloses a flexible antifatigue composite die of cable insulation sheath extrusion molding, including die sleeve body 1, die sleeve body 1 has the chamber 2 that holds that upwards runs through die sleeve body 1 in the front and back side to should hold the chamber 2 and be in the front end of die sleeve body 1 forms export 3, and the rear end forms import 4, and it has polytetrafluoroethylene 5 to inlay in the die sleeve body 1, and this polytetrafluoroethylene 5 is close to export 3 department.

Metal mold and nonmetal material easily appear "hydrostomia" educt in the production process of cable, time factory and insulating or sheath adhesion, unqualified phenomena such as granule, scorching appear, inlay the polytetrafluoroethylene inner liner and can solve similar incident, the utility model adopts the above structure, have simple structure, design benefit inlays polytetrafluoroethylene through the exit at the die sleeve body, and the cable surface of producing is smooth, luminance increase, effect such as thickness stability.

The utility model discloses a prolong the current structural design theory of cable extrusion molding mould, according to the insulating of cable and the operation requirement of sheath extrusion molding mould and the data parameter of extruding machine smart machine, optimize the structure of cable extrusion molding mould, the smooth finish that uses the mould cover that polytetrafluoroethylene bushing made can improve extruded cable or insulating surface, improve the outward appearance of cable, the mould core of different specifications can share a mould cover again, can save a large amount of materials and process time, showing reduce cost; the number of times of changing the specification is reduced, and the pulling and assembling are convenient and efficient.

The outer end face of the polytetrafluoroethylene 5 and the outer end face of the die sleeve body 1 close to the outlet 3 are on the same horizontal plane.

The die sleeve body 1 is provided with a plurality of countersunk head bolts 6, and the plurality of countersunk head bolts 6 are used for embedding polytetrafluoroethylene 5 in the outlet 3; wherein, countersunk head bolt 6 is provided with four, and the equidistance cloth is located in the die sleeve body 1 in the circumference.

The die sleeve body 1 is the interior die sleeve of inlaying polytetrafluoroethylene 5 in the metal overcoat that adopts outside 40Cr material, adopt hot melt extrusion's mode to connect and the crimping dual mode of colding pressing, ensure promptly can zonulae occludens between metal and the polytetrafluoroethylene, because the expansion coefficient of two kinds of substances is the disparity again, polytetrafluoroethylene is bigger at inlayer expansion coefficient, at extrusion molding aircraft nose intensification in-process, along with the continuous rising of temperature, the compactness between polytetrafluoroethylene and the 40Cr is bigger, even the normal production of the equipment that the pressure increase of extruder does not influence yet. The smooth finish of the surface of the control cable in the production process forms a uniform and flawless surface; the inlet 4 of the die sleeve body 1 is a chamfer module mouth with a trumpet-shaped structure.

The die sleeve body 1 comprises a first die body 10 and a second die body 11; the first die body 10 and the second die body 11 are fixedly connected and integrally formed; the structural strength and the firmness of the whole die sleeve body 1 are improved, the use safety is further ensured, and meanwhile, the first die body 10 and the second die body 11 are in a step-shaped structure; the device is convenient to be arranged on the machine head of the extruder for use.

The length of the first die body 10 is 1/2-2/3 of the length of the second die body 11; in this embodiment, the length of the first mold body 10 is 2/3 of the length of the second mold body 11, so that the structure is more optimized, and the layout is more reasonable.

The upper end surface of the second die body 11 and the upper end surface of the countersunk head bolt 6 are on the same horizontal plane.

The flexible fatigue-resistant composite die for cable insulation sheath extrusion molding is characterized in that:

the composite die sleeve is an inner die sleeve which is made of a metal outer sleeve made of an external 40Cr material and is embedded with polytetrafluoroethylene, and has the following characteristics:

1. the low-temperature-resistant and high-toughness composite material has good mechanical toughness at low temperature, and can maintain 5% of elongation even if the temperature is reduced to-196 ℃, so that the die forming is stable.

2. The corrosion-resistant coating is corrosion-resistant, inert to most chemicals and solvents, resistant to strong acid, strong alkali, water and various organic solvents, and free from corrosion of any substance.

3. The weather resistance is good, ageing resistance, and the ageing life is longest in mould inlaying.

4. High lubrication, the lowest coefficient of friction in solid materials.

5. The adhesive is not adhered, is the minimum surface tension in the solid material, and does not adhere any substance.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals in the figures are used more here: the terms of the die sleeve body 1, the accommodating cavity 2, the outlet 3, the inlet 4, the polytetrafluoroethylene 5, the countersunk head bolt 6, the first die body 10, the second die body 11 and the like do not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. The utility model provides a flexible antifatigue composite die of cable insulation sheath extrusion molding which characterized in that: including die sleeve body (1), die sleeve body (1) has the chamber (2) that holds that runs through die sleeve body (1) on the front and back direction to should hold chamber (2) and be in the front end of die sleeve body (1) forms export (3), and the rear end forms import (4), and it has polytetrafluoroethylene (5) to inlay in die sleeve body (1), and this polytetrafluoroethylene (5) are close to export (3) department.

2. The cable insulation sheath extrusion flexible fatigue-resistant composite die of claim 1, wherein: a plurality of countersunk head bolts (6) are installed on the die sleeve body (1), and the plurality of countersunk head bolts (6) are used for embedding polytetrafluoroethylene (5) at the outlet (3).

3. A cable insulation sheath extrusion flexible fatigue-resistant composite die as claimed in claim 2, wherein: the four countersunk head bolts (6) are distributed in the die sleeve body (1) at equal intervals in the circumferential direction.

4. A cable insulation sheath extrusion flexible fatigue-resistant composite die as claimed in claim 3, wherein: the outer end face of the polytetrafluoroethylene (5) and the outer end face of the die sleeve body (1) close to the outlet (3) are on the same horizontal plane.

5. A cable insulation sheath extrusion flexible fatigue-resistant composite die as claimed in claim 4, wherein: the die sleeve body (1) is a 40cr plate.

6. A cable insulation sheath extrusion flexible fatigue-resistant composite die as claimed in claim 5, wherein: and an inlet (4) of the die sleeve body (1) is a chamfer module opening with a horn-shaped structure.

7. The flexible fatigue-resistant composite die for cable insulation sheath extrusion molding according to claim 6, wherein: the die sleeve body (1) comprises a first die body (10) and a second die body (11); the first die body (10) and the second die body (11) are fixedly connected and integrally formed.

8. The cable insulation jacket extrusion flexible fatigue-resistant composite die of claim 7, wherein: the first die body (10) and the second die body (11) are of step-shaped structures.

9. The cable insulation jacket extrusion flexible fatigue-resistant composite die of claim 8, wherein: the length of the first mold body (10) is 1/2-2/3 of the length of the second mold body (11).

10. A cable insulation sheath extrusion flexible fatigue-resistant composite die as claimed in claim 9, wherein: the upper end face of the second die body (11) and the upper end face of the countersunk head bolt (6) are on the same horizontal plane.

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