CN106772860B - Extrusion die sleeve for three-color strips of 8-shaped optical cable - Google Patents
Extrusion die sleeve for three-color strips of 8-shaped optical cable Download PDFInfo
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- CN106772860B CN106772860B CN201611260336.7A CN201611260336A CN106772860B CN 106772860 B CN106772860 B CN 106772860B CN 201611260336 A CN201611260336 A CN 201611260336A CN 106772860 B CN106772860 B CN 106772860B
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- die sleeve
- color
- hanging wire
- cable core
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- 238000001125 extrusion Methods 0.000 title claims abstract description 41
- 230000003287 optical effect Effects 0.000 title claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 28
- 239000007924 injection Substances 0.000 claims abstract description 28
- 239000000835 fiber Substances 0.000 claims 4
- 238000004519 manufacturing process Methods 0.000 abstract description 14
- 238000009826 distribution Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4479—Manufacturing methods of optical cables
- G02B6/4482—Code or colour marking
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides an 8-shaped optical cable three-color strip extrusion die sleeve, which comprises a die sleeve body with a hollow cavity, wherein the cavity in the die sleeve body comprises a conical extrusion cavity and a forming cavity communicated with a small opening end of the conical extrusion cavity; the forming cavity is in an 8 shape as a whole and comprises a hanging wire port and a cable core port which are arranged up and down correspondingly, and the hanging wire port and the cable core port are communicated through a long groove; the outer side of the die sleeve body is sequentially provided with a color bar injection buffer area, an overflow area and an injection area, and a hanging wire color bar hole communicated with the hanging wire port and a cable core color bar hole communicated with the cable core port are arranged on the die sleeve body along the radial direction; and the hanging wire color stripe hole and the cable core color stripe hole are both arranged close to the injection area. The die sleeve can be used for extruding color bars in stages, color bars respectively pass through the buffer area, the overflow area, the injection area and the flat color bar holes, so that the extrusion of the whole color bars is more stable, the pressure distribution is uniform, the production efficiency is improved, and the extrusion quality of the color bars is high.
Description
Technical Field
The invention belongs to the technical field of cable production equipment, and particularly relates to an extrusion die sleeve for an 8-shaped optical cable three-color strip.
Background
The popularization and development of the optical cable have seen over thirty years in the global scope, from the beginning of laying the first optical cable to the present, the same pipeline, the same telegraph pole and even the same type optical cable can all exist optical cables of a plurality of operators and a plurality of types to different degrees, the recognition difficulty of the optical cable is increased, and if one or a plurality of color bars are arranged on the cable body along the axial direction, the problem of difficult installation, overhaul and recognition can be well solved. The manufacture of color bars requires a reasonable color bar extrusion process, and most importantly, an effective color bar extrusion die sleeve. The existing color bar extrusion die sleeve is poor in stability in the color bar extrusion process, the width of the color bar is difficult to adjust, and most of the color bar extrusion die sleeve adopts round color bar extrusion holes, the sectional area of the color bar extrusion holes is large, so that the pressure is overlarge, the extrusion quality of the color bar is affected, and hidden hazards are brought to the appearance of the optical cable and even the service life in future.
Disclosure of Invention
In view of the above, the present invention aims to overcome the defects in the prior art, and proposes an extrusion die sleeve for a tri-color ribbon of an 8-shaped optical cable.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
an 8-shaped optical cable three-color strip extrusion die sleeve comprises a die sleeve body with a hollow cavity, wherein the cavity in the die sleeve body comprises a conical extrusion cavity and a forming cavity communicated with a small opening end of the conical extrusion cavity; the forming cavity is in an 8 shape as a whole and comprises a hanging wire port and a cable core port which are arranged up and down correspondingly, and the hanging wire port and the cable core port are communicated through a long groove; the outer side of the die sleeve body is sequentially provided with a color bar injection buffer area, an overflow area and an injection area, and a hanging wire color bar hole communicated with the hanging wire port and a cable core color bar hole communicated with the cable core port are arranged on the die sleeve body along the radial direction; and the hanging wire color stripe hole and the cable core color stripe hole are both arranged close to the injection area.
Further, the buffer area and the injection area are circular arc grooves surrounding the outer wall of the die sleeve body; the overflow area is a bulge between the buffer area and the injection area groove, and the upper surface of the bulge is lower than the outer wall surface of the die sleeve body.
Further, the upper surface of the protrusion is a plane.
Further, the distance between the upper surface of the protrusion and the outer wall of the die sleeve body is 0.5mm.
Further, the buffer region has a groove depth greater than the implant region.
Further, the depth of the groove of the buffer zone is 1.5-2mm.
Further, the hanging wire color bar holes and the cable core color bar holes are flat holes, and the cross section of the cable core color bar holes is larger than that of the hanging wire color bar holes.
Further, the axis of the die sleeve body is perpendicular to the hanging wire color strip hole and two parallel sides of the cable core color strip hole.
Compared with the prior art, the invention has the following advantages:
the extrusion of color bars can be carried out by stages by the die sleeve, color bars respectively pass through the buffer zone, the overflow zone, the injection zone and the flat color bar holes, so that the extrusion of the whole color bars is more stable, the pressure distribution is even, the production efficiency is improved, the production speed of the die sleeve can reach 50m/min, and the production speed is doubled compared with the production speed of the die sleeve, because the color bar holes adopt the flat hole design, the production of wide color bars is realized, and the problem that the extrusion quality of the color bars is influenced because the cross section area of the round Kong Setiao holes is large can be avoided.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and 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. In the drawings:
FIG. 1 is a cross-sectional view of the structure of the present invention;
FIG. 2 is a left side view schematic of FIG. 1;
fig. 3 is a schematic structural view of the present invention.
Reference numerals illustrate:
1-a die sleeve body; 2-a conical extrusion chamber; 3-forming a cavity; 4-a hanging wire port; 5-a cable core opening; 6-an elongated slot; 7-injecting color bars into the buffer area; 8-an overflow zone; 9-implantation region; 10-hanging wire color bar holes; 11-cable core color bar holes.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
An 8-shaped optical cable three-color strip extrusion die sleeve is shown in fig. 1 to 3, and comprises a die sleeve body 1 with a hollow cavity, wherein the cavity in the die sleeve body 1 comprises a conical extrusion cavity 2 and a forming cavity 3 communicated with the small opening end of the conical extrusion cavity; the forming cavity 3 is in a shape of a Chinese character '8' and comprises a hanging wire port 4 and a cable core port 5 which are correspondingly arranged up and down, and the hanging wire port 4 and the cable core port are communicated through a long groove 6; the outer side of the die sleeve body 1 is sequentially provided with a color bar injection buffer area 7, an overflow area 8 and an injection area 9, and a hanging wire color bar hole 10 communicated with the hanging wire port 4 and a cable core color bar hole 11 communicated with the cable core port 5 are arranged on the die sleeve body 1 along the radial direction; the suspension wire color stripe holes 10 and the cable core color stripe holes 11 are arranged close to the injection area. The caliber of the hanging wire port 4 and the caliber of the cable core port 5 are designed according to the specification of the optical cable.
The buffer area 7 and the injection area 9 are circular arc grooves surrounding the outer wall of the die sleeve body 1; the overflow area is a bulge between the buffer area and the injection area groove, the upper surface of the bulge is lower than the outer wall surface of the die sleeve body, and the injection area is used as a storage channel for injecting color bars into each color bar hole.
The arc radiuses of the arc grooves of the buffer area 7 and the injection area 9 can be adjusted according to the extrusion amount of color bars, the groove depth is mainly used for controlling the glue storage amount of the color bars, and the corresponding specification is manufactured according to actual needs. The overflow area is the transition area from the buffer area to the injection area, and the convex upper surface of the overflow area is preferably a plane, and the surface of the overflow area is raised compared with the bottom of the buffer area.
The distance between the upper surface of the bulge and the outer wall of the die sleeve body is 0.5mm, after color bar raw materials in the buffer zone are accumulated, the color bar raw materials overflow to the injection zone through the overflow zone, flow to the suspended wire color bar hole 10 and the cable core color bar hole 11, and the stable flow direction and pressure balance of the color bar materials are guaranteed through the buffer zone 7, the overflow zone 8 and the injection zone 9, so that the color bar basic quality is effectively improved.
The depth of the grooves of the buffer area 7 is larger than the depth of the grooves of the injection area 9. Typically, the depth of the grooves of the buffer area 7 is 1.5-2mm, and gentle slopes are arranged on the two side walls of each groove, so that stable and gentle flow of color bars is ensured.
The hanging wire hole and the cable core hole are important parts of the die sleeve, bear the extrusion function of the sheath body and the hanging wire body of the 8-shaped optical cable, the hanging wire color bar hole 10 and the cable core color bar hole 11 are flat holes, and the outer diameter of the cable core is usually larger than that of the hanging wire, so that the cross section of the cable core color bar hole 11 is set to be larger than that of the hanging wire color bar hole 10.
The cable core color bar hole 7 adopts flat holes, the radius is 0.8 mm's semicircle on both sides, simultaneously, the axis of die sleeve body 1 perpendicular to hanging wire color bar hole 10 and the both sides that cable core color bar hole 11 is parallel, namely, the direction that color bar material extruded color bar width is the same with the axial of optical cable, can effectively control color bar extrusion pressure, is particularly suitable for the extrusion of wide color bar, has improved production efficiency and extrusion quality.
Extruding the die sleeve by using the natural color bar. The extrusion of the color bars is carried out in stages, color bars are extruded more stably through the buffer area, the overflow area, the injection area and the flat color bar holes, the pressure distribution is uniform, the production efficiency is improved, the production speed of the die sleeve can reach 50m/min, the production speed is doubled compared with the production speed of the die sleeve, the production of wide color bars is realized due to the fact that the flat hole design is adopted by the color bar holes, and the problem that the extrusion quality of the color bars is affected due to overlarge pressure caused by the fact that the sectional area of the round Kong Setiao holes is large in the past is avoided.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (5)
1. An 8-shaped optical cable three-color strip extrusion die sleeve is characterized in that: the die sleeve comprises a die sleeve body with a hollow cavity, wherein the cavity in the die sleeve body comprises a conical extrusion cavity and a forming cavity communicated with a small opening end of the conical extrusion cavity; the forming cavity is in an 8 shape as a whole and comprises a hanging wire port and a cable core port which are arranged up and down correspondingly, and the hanging wire port and the cable core port are communicated through a long groove; the outer side of the die sleeve body is sequentially provided with a color bar injection buffer area, an overflow area and an injection area, and a hanging wire color bar hole communicated with the hanging wire port and a cable core color bar hole communicated with the cable core port are arranged on the die sleeve body along the radial direction; the hanging wire color stripe hole and the cable core color stripe hole are both arranged close to the injection area; the buffer area and the injection area are circular arc grooves surrounding the outer wall of the die sleeve body, the groove depth of the buffer area is larger than that of the injection area, and the two side walls of each groove are provided with gentle slopes; the overflow area is a bulge between the buffer area and the injection area groove, and the upper surface of the bulge is lower than the outer wall surface of the die sleeve body; the hanging wire color bar holes and the cable core color bar holes are flat holes, and the cross section of the cable core color bar holes is larger than that of the hanging wire color bar holes.
2. An extrusion die sleeve for a tri-color ribbon of an 8-shaped fiber optic cable as set forth in claim 1, wherein: the upper surface of the bulge is a plane.
3. An extrusion die sleeve for a tri-color ribbon of an 8-shaped fiber optic cable as set forth in claim 2, wherein: the distance between the upper surface of the bulge and the outer wall of the die sleeve body is 0.5mm.
4. An extrusion die sleeve for a tri-color ribbon of an 8-shaped fiber optic cable as set forth in claim 1, wherein: the depth of the groove of the buffer zone is 1.5-2mm.
5. A figure 8 fiber optic cable tricolor extrusion die sleeve as defined in claim 3, wherein: the axis of the die sleeve body is perpendicular to the hanging wire color strip hole and two parallel sides of the cable core color strip hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611260336.7A CN106772860B (en) | 2016-12-30 | 2016-12-30 | Extrusion die sleeve for three-color strips of 8-shaped optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611260336.7A CN106772860B (en) | 2016-12-30 | 2016-12-30 | Extrusion die sleeve for three-color strips of 8-shaped optical cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106772860A CN106772860A (en) | 2017-05-31 |
| CN106772860B true CN106772860B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611260336.7A Active CN106772860B (en) | 2016-12-30 | 2016-12-30 | Extrusion die sleeve for three-color strips of 8-shaped optical cable |
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| CN (1) | CN106772860B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108340556A (en) * | 2017-12-29 | 2018-07-31 | 通鼎互联信息股份有限公司 | A kind of molding machine of 8 word cable of double-colored item |
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| CN105223669A (en) * | 2015-11-17 | 2016-01-06 | 江苏亨通光电股份有限公司 | Stranded optical fiber optical cable three-layer co-extruded Loose tube method and three-layer loose tubes |
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2016
- 2016-12-30 CN CN201611260336.7A patent/CN106772860B/en active Active
Patent Citations (14)
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| JP2001004882A (en) * | 1999-06-17 | 2001-01-12 | Fujikura Ltd | Method for identifying and displaying optical fiber cord and optical fiber cord with identification display |
| CN101635189A (en) * | 2009-05-21 | 2010-01-27 | 沈群华 | Improved two-color cable sheath extruded mould |
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| Publication number | Publication date |
|---|---|
| CN106772860A (en) | 2017-05-31 |
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