CN210308956U

CN210308956U - Extrusion die for manufacturing optical fiber cable

Info

Publication number: CN210308956U
Application number: CN201920625565.7U
Authority: CN
Inventors: 周鹏; 骆志平
Original assignee: Wuxi Dengfeng Cable Co Ltd
Current assignee: Wuxi Dengfeng Cable Co Ltd
Priority date: 2019-05-05
Filing date: 2019-05-05
Publication date: 2020-04-14
Anticipated expiration: 2029-05-05

Abstract

The utility model discloses an extrusion tooling is used in optical fiber cable manufacturing relates to optical fiber cable and makes technical field, takes place long-pending material for solving current extrusion tooling's discharge gate easily to influence optical fiber cable's yield, and the comparatively troublesome problem of die holding dismantlement. Including the die sleeve, the upper surface of die sleeve is provided with the discharge gate, install annular tungsten steel bushing on the inner wall of discharge gate, be provided with the rectangle tooth on the inner wall of annular tungsten steel bushing, and rectangle tooth and annular tungsten steel bushing structure as an organic whole, the inside of die sleeve is provided with the mold core, be provided with the glue flow clearance between die sleeve and the mold core, the one end in glue flow clearance is provided with the feed inlet, the upper surface of mold core is provided with extrudes the hole, the inside of mold core is provided with the mold core chamber, fixed protruding handle is installed to the below of mold core, the inside of fixed protruding handle is provided with the cylinder chamber, the lower surface of fixed protruding handle is provided with and extrudes the hole.

Description

Extrusion die for manufacturing optical fiber cable

Technical Field

The utility model relates to an optical fiber cable makes technical field, specifically is an extrusion tooling is used in optical fiber cable manufacturing.

Background

The optical fiber cable is a conducting wire for transmitting electric energy, and comprises a bare wire, an electromagnetic wire and an insulating wire, wherein the bare wire is not provided with an insulating layer, comprises a copper flat wire, an aluminum flat wire, an overhead stranded wire and various profiles, and is mainly used for outdoor overhead and indoor bus bars and switch boxes, and the electromagnetic wire is an insulating conducting wire which generates a magnetic field after being electrified or induces and generates current in the magnetic field. The conductor is mainly copper wire, the thin insulating layer and the good electric mechanical property are needed, the heat resistance, the moisture resistance and the solvent resistance are needed, different insulating materials are selected to obtain different properties, the electromagnetic wire is an insulated wire which generates a magnetic field after being electrified or induces and generates current in the magnetic field, the conductor is mainly copper wire, the thin insulating layer and the good electric mechanical property are needed, the heat resistance, the moisture resistance and the solvent resistance are needed, and different insulating materials are selected to obtain different properties. Fiber optic cables are typically made using an extrusion die.

However, the material accumulation is easy to occur at the discharge port of the existing extrusion die, so that the yield of the optical fiber cable is influenced, and the die is troublesome to mount and dismount; therefore, the existing requirements are not satisfied, and an extrusion die for manufacturing the optical fiber cable is provided for the purpose.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an extrusion tooling is used in optical fiber cable manufacturing to the long-pending material takes place easily for the discharge gate of the current extrusion tooling who provides in solving above-mentioned background art, thereby influences optical fiber cable's yield, and the comparatively trouble problem of die holding dismantlement.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an optical fiber cable makes and uses extrusion tooling, includes the die sleeve, the upper surface of die sleeve is provided with the discharge gate, install annular tungsten steel bushing on the inner wall of discharge gate, be provided with the rectangle tooth on the inner wall of annular tungsten steel bushing, and rectangle tooth and annular tungsten steel bushing structure as an organic whole, the inside of die sleeve is provided with the mold core, be provided with the glue flow clearance between die sleeve and the mold core, the one end in glue flow clearance is provided with the feed inlet, the upper surface of mold core is provided with extrudes the hole, the inside of mold core is provided with the mold core chamber, fixed protruding handle is installed to the below of mold core, the inside of fixed protruding handle is provided with the cylinder chamber, the lower surface of fixed protruding handle is provided with the extrusion hole, be provided with the external screw thread structure on the outer wall of fixed protruding handle, and external screw thread structure and fixed.

Preferably, the number of the rectangular teeth is multiple, and the multiple rectangular teeth are uniformly distributed on the inner wall of the annular tungsten steel sleeve.

Preferably, the outer wall of the annular tungsten steel sleeve is connected with the inner wall of the discharge hole in a welding mode.

Preferably, the vertical center line of the die sleeve is coincident with the vertical center line of the die core.

Preferably, the inner diameter of the discharge hole is larger than the outer diameter of the extrusion hole.

Preferably, the vertical center line of the mold core is superposed with the vertical center line of the fixed convex handle, and the mold core and the fixed convex handle are of an integral structure.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up annular tungsten steel cover, and be provided with a plurality of rectangle teeth on the inner wall of annular tungsten steel cover, annular tungsten steel cover surface is level and smooth, can avoid the discharge gate department to take place long-pending material; rectangular teeth on the inner wall of the annular tungsten steel sleeve can form strip-shaped bulges on the sheath extruded by the optical fiber cable, so that the wear resistance of the optical fiber cable is effectively improved.

2. Through setting up the glue flow clearance, and the glue flow clearance can reduce gradually, and the glue flow clearance that reduces gradually can let the injection moulding glue have abundant space even pressure, makes the smooth parcel of glue film on fiber optic cable's outer wall.

3. Through set up the external screw thread structure on the outer wall at fixed protruding handle, the mould can be through fixed protruding handle and extruding machine threaded connection, and the installation is simple, and is fixed firm, easy dismounting.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic external structural view of the present invention;

fig. 3 is a schematic top view of the present invention;

in the figure: 1. die sleeve; 2. a glue flow gap; 3. a feed inlet; 4. a discharge port; 5. an annular tungsten steel sleeve; 6. a mold core; 7. a die core cavity; 8. fixing the convex handle; 9. a cylindrical cavity; 10. an extrusion hole; 11. an extrusion orifice; 12. an external thread structure; 13. a rectangular tooth.

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.

Referring to fig. 1-3, the present invention provides an embodiment: an extrusion die for manufacturing an optical fiber cable comprises a die sleeve 1, wherein a discharge port 4 is formed in the upper surface of the die sleeve 1, an annular tungsten steel sleeve 5 is installed on the inner wall of the discharge port 4, the surface of the annular tungsten steel sleeve 5 is smooth, material accumulation at the discharge port 4 can be avoided, rectangular teeth 13 are arranged on the inner wall of the annular tungsten steel sleeve 5, the rectangular teeth 13 and the annular tungsten steel sleeve 5 are of an integral structure, the rectangular teeth 13 can form strip-shaped bulges on a sheath extruded by the optical fiber cable, the wear resistance of the optical fiber cable is effectively improved, a die core 6 is arranged inside the die sleeve 1, a glue flow gap 2 is arranged between the die sleeve 1 and the die core 6, a feed port 3 is arranged at one end of the glue flow gap 2, an extrusion hole 11 is formed in the upper surface of the die core 6, a die core cavity 7 is arranged inside the die core 6, a fixed convex handle 8 is installed below the die core 6, a, the lower surface of fixed protruding handle 8 is provided with squeeze-in hole 10, is provided with external screw thread structure 12 on the outer wall of fixed protruding handle 8, and external screw thread structure 12 and fixed protruding handle 8 structure as an organic whole, and external screw thread structure 12 can conveniently install and dismantle the mould.

Further, the rectangular tooth 13 is provided with a plurality of, and a plurality of rectangular tooth 13 evenly distributed can produce the bar tongue on the cable jacket of 13 extrusion through the rectangular tooth on the inner wall of annular tungsten steel bushing 5 to increase the wear resistance of cable.

Further, the outer wall of annular tungsten steel bushing 5 and the inner wall welded connection of

discharge gate

4, 5 smooth surfaces of annular tungsten steel bushing can avoid discharge gate 4 department to take place long-pending material, and annular tungsten steel bushing 5 is stable with discharge gate 4 welded connection structure, can prevent that the phenomenon that too big annular tungsten steel bushing 5 of pressure breaks away from discharge gate 4 during the extrusion from taking place.

Furthermore, the vertical center line of the die sleeve 1 coincides with the vertical center line of the die core 6, and the vertical center lines of the die sleeve and the die core coincide, so that the tightness of the die can be improved, and the phenomenon that the quality of the cable is influenced by extrusion dislocation of the die is avoided.

Further, the internal diameter of discharge gate 4 is greater than the external diameter of extruding hole 11, and the clearance between die sleeve 1 and the mold core 6 can reduce gradually like this, lets the injection molding glue have abundant space uniform pressure, makes the glue film level and smooth more.

Furthermore, the vertical center line of the mold core 6 coincides with the vertical center line of the fixed convex handle 8, the mold core 6 and the fixed convex handle 8 are of an integral structure, and the outer wall of the fixed convex handle 8 is provided with an external thread structure 12, so that the mold can be conveniently mounted and dismounted.

The working principle is as follows: when the device is used, the mold core 6 required by processing the optical fiber cable is selected firstly, after the selection is completed, the mold core is installed inside the mold sleeve 1, after the installation is completed, the mold is installed on an extruding machine through the external thread structure 12 on the fixed convex handle 8, the extrusion molding of the optical fiber cable sheath is started, the injection molding glue is extruded into the discharge port 4 through the glue flow gap 2, the glue flow gap 2 can be gradually reduced, the injection molding glue has sufficient space uniform pressure, the glue layer is flatly wrapped on the outer wall of the optical fiber cable to form a layer of outer sheath, the annular tungsten steel sleeve 5 is installed at the discharge port 4, and the inner wall of the annular tungsten steel sleeve 5 is provided with the plurality of rectangular teeth 13, so that strip-shaped bulges can be formed on the extruded sheath of the optical fiber cable, and the wear resistance of the.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides an optical fiber cable makes and uses extrusion tooling, includes die sleeve (1), its characterized in that: the upper surface of the die sleeve (1) is provided with a discharge port (4), the inner wall of the discharge port (4) is provided with an annular tungsten steel sleeve (5), the inner wall of the annular tungsten steel sleeve (5) is provided with rectangular teeth (13), the rectangular teeth (13) and the annular tungsten steel sleeve (5) are of an integral structure, the die sleeve (1) is internally provided with a die core (6), a glue flow gap (2) is arranged between the die sleeve (1) and the die core (6), one end of the glue flow gap (2) is provided with a feed inlet (3), the upper surface of the die core (6) is provided with an extrusion hole (11), the die core (6) is internally provided with a die core cavity (7), a fixed convex handle (8) is arranged below the die core (6), a cylindrical cavity (9) is arranged inside the fixed convex handle (8), and the lower surface of the fixed convex handle (8) is provided with an extrusion hole (10), the outer wall of the fixed convex handle (8) is provided with an external thread structure (12), and the external thread structure (12) and the fixed convex handle (8) are of an integral structure.

2. The extrusion die for manufacturing an optical fiber cable according to claim 1, wherein: the rectangular teeth (13) are provided with a plurality of rectangular teeth, and the rectangular teeth (13) are uniformly distributed on the inner wall of the annular tungsten steel sleeve (5).

3. The extrusion die for manufacturing an optical fiber cable according to claim 1, wherein: the outer wall of the annular tungsten steel sleeve (5) is connected with the inner wall of the discharge hole (4) in a welding mode.

4. The extrusion die for manufacturing an optical fiber cable according to claim 1, wherein: the vertical center line of the die sleeve (1) is superposed with the vertical center line of the die core (6).

5. The extrusion die for manufacturing an optical fiber cable according to claim 1, wherein: the inner diameter of the discharge hole (4) is larger than the outer diameter of the extrusion hole (11).

6. The extrusion die for manufacturing an optical fiber cable according to claim 1, wherein: the vertical center line of the mold core (6) is superposed with the vertical center line of the fixed convex handle (8), and the mold core (6) and the fixed convex handle (8) are of an integral structure.