CN108072947B

CN108072947B - Mould for manufacturing multi-core optical cable

Info

Publication number: CN108072947B
Application number: CN201711474428.XA
Authority: CN
Inventors: 沈小平; 李文善; 陈斌; 李刚; 庄浩兵; 肖仁贵
Original assignee: Tongding Interconnection Information Co Ltd
Current assignee: Tongding Interconnection Information Co Ltd
Priority date: 2017-12-29
Filing date: 2017-12-29
Publication date: 2020-04-24
Anticipated expiration: 2037-12-29
Also published as: CN108072947A

Abstract

The invention provides a die for manufacturing a multi-core optical cable, which comprises a die core and a die sleeve sleeved on the die core; the front end of the mold core is provided with a forming part, and the forming part comprises a central pipe and a plurality of forming sleeves which are uniformly distributed by taking the central pipe as the center; the oil needle is inserted into the mold core, the front end of the oil needle is provided with needle tubes which correspond to the forming sleeves one by one, the needle tubes are inserted into the inner holes of the corresponding forming sleeves and are coaxially arranged with the corresponding forming sleeves, and a first extrusion seam is formed between the outer walls of the needle tubes and the inner walls of the forming sleeves; and a second extrusion seam is formed between the outer wall of each forming sleeve and the inner wall of the die sleeve, and a connecting seam for communicating the first extrusion seam with the second extrusion seam is arranged between every two forming sleeves. The optical cable formed by processing has the advantages of compact structure, good stability, more excellent compression resistance, reduced material consumption, reduced cost and improved production efficiency.

Description

Mould for manufacturing multi-core optical cable

Technical Field

The invention belongs to the technical field of optical cable production and manufacturing, and particularly relates to a mold for manufacturing a multi-core optical cable.

Background

The multi-core optical cable mainly has three structural forms: central beam tube type, layer twisting type and skeleton type. Wherein the layer-twisting type application is wider. For the layer-stranded optical cable, each unit (loose tube) for accommodating the optical fiber is independently manufactured, then the optical fiber, the filling unit and the strengthening unit are stranded together to form a cable core, and then the optical cable is formed through the manufacturing process of the outer protective layer. The optical fibers are coated in groups. For the skeleton-type optical cable, the optical fiber-containing components are fabricated at one time, and then the optical fibers are placed therein. The skeleton type optical cable has the advantage of high efficiency in manufacturing the optical fiber covering component, but one more process is added for placing the optical fiber. The layer-stranding method has the advantages of synchronously realizing the manufacturing of the optical fiber coating component and the placing of the optical fiber and manufacturing efficiency, but the process of stranding the sleeve pipe has one more unit combination process. It is highly desirable to design a mold for manufacturing a multi-core optical cable, which can improve the production efficiency.

Disclosure of Invention

In view of the above, the present invention provides a mold for manufacturing a multi-core optical cable, which aims to overcome the above-mentioned defects in the prior art.

In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a mould for manufacturing a multi-core optical cable comprises a mould core and a mould sleeve sleeved on the mould core; the front end of the mold core is provided with a forming part, and the forming part comprises a central pipe and a plurality of forming sleeves which are uniformly distributed by taking the central pipe as the center; the oil needle is inserted into the mold core, the front end of the oil needle is provided with needle tubes which correspond to the forming sleeves one by one, the needle tubes are inserted into the inner holes of the corresponding forming sleeves and are coaxially arranged with the corresponding forming sleeves, and a first extrusion seam is formed between the outer walls of the needle tubes and the inner walls of the forming sleeves; and a second extrusion seam is formed between the outer wall of each forming sleeve and the inner wall of the die sleeve, and a connecting seam for communicating the first extrusion seam with the second extrusion seam is arranged between every two forming sleeves.

Furthermore, the front end of the die sleeve is provided with a positioning step.

Furthermore, the rear end of the mold core is provided with a positioning groove.

Furthermore, the rear end of the oil needle is provided with a positioning section extending out of the mold core.

Furthermore, the position of the front end of the mold core close to the forming part is an inclined plane part, and a mold cavity matched with the inclined plane part is arranged on the mold sleeve.

Further, the mold core and the mold sleeve are coaxially arranged.

Compared with the prior art, the invention has the following advantages:

compared with the traditional layer stranded optical cable, the invention reduces the processing quantity of loose tubes and also avoids the cabling procedure; in addition, the formed optical cable has compact structure, good stability and more excellent compression resistance, and simultaneously reduces the material consumption and the cost. The mold can be used for manufacturing a plurality of optical fiber coated components at one time, and placing optical fibers while manufacturing the optical fiber coated components, so that the production efficiency is improved, and the manufacturing cost is reduced.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the invention without limitation. In the drawings:

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

FIG. 2 is a structural sectional view of the oil needle in the invention;

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is a schematic perspective view of the oil needle according to the present invention;

FIG. 5 is a schematic structural diagram of a mold core in the invention;

FIG. 6 is a structural sectional view of the mold core in the invention;

FIG. 7 is a left side view of FIG. 5;

FIG. 8 is a schematic perspective view of a mold core according to the present invention;

fig. 9 is a structural section view of a die sleeve in the invention.

Description of reference numerals:

1-a mold core; 2-die sleeve; 3-a forming section; 4-a central tube; 5-forming a sleeve; 6-oil needle; 7-a needle tube; 8-first extrusion slit; 9-a second extrusion slit; 11-positioning step; 12-a positioning groove; 13-a positioning section; 14-a ramp portion; 15-cavity.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable 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 creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following embodiments with reference to the attached drawings.

A mould for manufacturing a multi-core optical cable is shown in figures 1 to 9 and comprises a mould core 1 and a mould sleeve 2 sleeved on the mould core; the front end of the mold core 1 is provided with a forming part 3, and the forming part comprises a central pipe 4 and a plurality of forming sleeves 5 which are uniformly distributed by taking the central pipe as the center; an oil needle 6 is inserted into the mold core, needle tubes 7 which correspond to the forming sleeves one by one are arranged at the front ends of the oil needles, the needle tubes 7 are inserted into inner holes of the corresponding forming sleeves 5 and are coaxially arranged with the corresponding forming sleeves, and first extrusion seams 8 are formed between the outer walls of the needle tubes and the inner walls of the forming sleeves; and a second extrusion seam 9 is formed between the outer wall of each forming sleeve and the inner wall of each die sleeve, and a connecting seam for communicating the first extrusion seam with the second extrusion seam is arranged between every two forming sleeves.

The reinforcing part can be extruded by utilizing the central tube, the waterproof material, the optical fiber and the like can be respectively and simultaneously extruded by the forming sleeve, the coated parts can be simultaneously extruded by the extruding seams between the outer wall of the forming sleeve and the die sleeve and between the needle tube and the forming sleeve, and the former multiple processes are equivalently arranged in the same process, so that the production efficiency is greatly improved, and the quality is stable and reliable.

It should be noted that, the covering piece of the optical cable is extruded from the first extrusion slit, the second extrusion slit and the connecting slit which is communicated with the first extrusion slit and the second extrusion slit at the same time, the covering piece is integrally formed and extruded with the internal components of the optical cable at the same time, and the optical cable covering piece has the advantages of compact structure, good stability and high production efficiency.

The front end of the mold core 1 close to the molding part is an inclined plane part 14, and the mold sleeve is provided with a mold cavity 15 matched with the inclined plane part. The mold core and the mold sleeve are coaxially arranged, and the front end of the mold sleeve 2 is provided with a positioning step 11. The rear end of the mold core 1 is provided with a positioning groove 12. The die sleeve and the die core are positioned firmly, and can form stable cooperation between the die sleeve and the die core, so that the product quality is effectively guaranteed during production operation.

The rear end of the oil needle 6 is provided with a positioning section 13 extending out of the mold core. The oil needle is reliably fixed, and the stability of the product quality is ensured.

The forming part of the mold core in the invention comprises at least two forming sleeves, and the forming sleeves are used for forming the inside of the optical cable porous unit component; the die sleeve is used for forming the appearance of the optical cable porous unit component; the oil needle is used for conveying materials such as optical fibers, water-blocking materials, reinforcing pieces, tearing ropes and the like, and guiding the materials into the porous unit holes of the optical cable. The mold core, the mold sleeve and the oil needle are convenient to fix, the stability is good when the optical cable is produced and processed, and the quality of a finished product is reliably guaranteed.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, so that any modifications, equivalents, improvements and the like, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.

Claims

1. A mould for manufacturing a multi-core optical cable is characterized in that: comprises a mold core and a mold sleeve sleeved on the mold core; the front end of the mold core is provided with a forming part, and the forming part comprises a central pipe and a plurality of forming sleeves which are uniformly distributed by taking the central pipe as the center; the oil needle is inserted into the mold core, the front end of the oil needle is provided with needle tubes which correspond to the forming sleeves one by one, the needle tubes are inserted into the inner holes of the corresponding forming sleeves and are coaxially arranged with the corresponding forming sleeves, and a first extrusion seam is formed between the outer walls of the needle tubes and the inner walls of the forming sleeves; a second extrusion seam is formed between the outer wall of each forming sleeve and the inner wall of the die sleeve, and a connecting seam for communicating the first extrusion seam with the second extrusion seam is arranged between every two forming sleeves; the front end of the die sleeve is provided with a positioning step; and a positioning groove is formed in the rear end of the mold core.

2. The mold for manufacturing a multicore optical cable according to claim 1, wherein: and the rear end of the oil needle is provided with a positioning section extending out of the mold core.

3. The mold for manufacturing a multicore optical cable according to claim 1, wherein: the mold core front end is close to the position of shaping portion for inclined plane portion, be equipped with the die cavity that matches with this inclined plane portion on the die sleeve.

4. The mold for manufacturing a multicore optical cable according to claim 1, wherein: the mold core and the mold sleeve are coaxially arranged.