CN112192823A - Double-heterochromatic strip sheath and extrusion die thereof - Google Patents
Double-heterochromatic strip sheath and extrusion die thereof Download PDFInfo
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- CN112192823A CN112192823A CN202010980755.8A CN202010980755A CN112192823A CN 112192823 A CN112192823 A CN 112192823A CN 202010980755 A CN202010980755 A CN 202010980755A CN 112192823 A CN112192823 A CN 112192823A
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- color bar
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/17—Articles comprising two or more components, e.g. co-extruded layers the components having different colours
- B29C48/175—Articles comprising two or more components, e.g. co-extruded layers the components having different colours comprising a multi-coloured single component, e.g. striated, marbled or wood-like patterned
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/304—Extrusion nozzles or dies specially adapted for bringing together components, e.g. melts within the die
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
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- 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
- G02B6/4401—Optical cables
- G02B6/4429—Means specially adapted for strengthening or protecting the cables
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a double-heterochrosis strip sheath and an extrusion die thereof, wherein the double-heterochrosis strip sheath comprises a sheath body, two pairs of double-heterochrosis strips which are arranged in parallel are embedded on the outer side of the sheath body, and the two pairs of double-heterochrosis strips are symmetrically arranged; extrusion tooling includes the mold core, the color bar reposition of redundant personnel awl, the color bar die sleeve, the color bar reposition of redundant personnel awl includes two independent setting's color bar splitter box, be provided with first color bar runner and second color bar runner on the color bar die sleeve, the runner entry of first color bar runner and second color bar runner communicates with the reposition of redundant personnel export of two color bar splitter boxes respectively, first color bar runner and second color bar runner extend the setting to color bar die sleeve both sides from die sleeve entrance bifurcation, first color bar runner and second color bar flow all are provided with two runner exports, runner export symmetry sets up the both sides at the color bar die sleeve. The invention provides a color bar form different from the conventional single color bar and multi-color bar, improves the identification degree, and provides a special die for producing the color bar form.
Description
Technical Field
The invention relates to the field of optical cable design and manufacture, in particular to a double-heterochromatic strip sheath and an extrusion die thereof.
Background
Optical cable market conventional demand uses black PE oversheath, present in order to increase the degree of discerning of optical cable outward appearance, the installation of the optical cable of being convenient for, maintenance and fault detection, be on the oversheath surface of optical cable usually, along the axial setting with the different color bar of sheath colour, because the use of color bar is more and more common, single color bar appears in current optical cable, two root color bars, even with the color bar more, need the quantity and the colour of the increase color bar that do not stop in order to realize the degree of discerning of outward appearance, just need increase the color bar auxiliary engine when producing like this, reach the saturation state after the color bar increases to the certain degree, consequently, need one kind to be different from the new color bar form of following the color bar more now urgently.
The forming process for producing the color bar optical cable is realized by two modes, the first mode adopts a color bar spreader cone to control the forming of the color bar, the color bar produced by the color bar spreader cone is relatively stable, but the color bar spreader cone has high cost, poor universality and complicated replacement of the color bar spreader cone; the second kind adopts the shaping of colour bar die sleeve to control the colour bar, and the colour bar suitability through the production of colour bar die sleeve is strong, the cost of mould is low, but whole assembly and stability are not as good as the first kind. Two kinds of color bar forming process in the prior art limit the diversity of color bar forms, no matter through the spreader cone or the color bar die sleeve, the increase of the number of the color bars can only be realized, and the color bars can be saturated after reaching a certain degree, so that a new extrusion die is urgently needed to break the industry barrier.
Disclosure of Invention
The invention aims to provide a double-different-color-strip sheath and an extrusion die thereof, provides a color strip form different from a conventional single color strip and a plurality of color strips, improves the identification degree, and provides a special die for producing the color strip form.
In order to solve the technical problem, the invention provides a double-heterochrosis strip sheath which comprises a tubular sheath body used for covering a cable core, wherein two pairs of double-heterochrosis strips which are arranged in parallel are embedded outside the sheath body, the two pairs of double-heterochrosis strips are symmetrically arranged, and two homochromy strips in the two pairs of double-heterochrosis strips are arranged on one side.
In a preferred embodiment of the present invention, 1/3 the wall thickness of the bi-color bar is equal to the total wall thickness of the sheath body.
In a preferred embodiment of the present invention, a gap between two color bars of the dual-color bar is less than 0.1 mm.
In a preferred embodiment of the present invention, the sheath body and the two different-color strips are made of low smoke halogen-free flame-retardant sheath material.
In order to solve the technical problem, the invention also provides a double-different-color-bar sheath extrusion die, which comprises a die core, a color bar shunting cone and a color bar die sleeve, wherein the color bar shunting cone and the color bar die sleeve are sleeved outside the die core, the color bar splitter cone comprises two independently arranged color bar splitter boxes, the splitter inlets of the two color bar splitter boxes are respectively communicated with the two color bar auxiliary machines to extrude two color bar materials with different colors, the color bar die sleeve is provided with a first color bar flow channel and a second color bar flow channel, the flow channel inlets of the first color bar flow channel and the second color bar flow channel are respectively communicated with the shunting outlets of the two color bar shunting grooves, the first color bar flow channel and the second color bar flow channel are branched from the inlet of the die sleeve and extend to two sides of the color bar die sleeve, the first color bar flow channel and the second color bar flow channel are both provided with two flow channel outlets, the flow channel outlets are symmetrically arranged on two sides of the color bar die sleeve, and each flow channel outlet and the die sleeve inlet form an included angle of 90 degrees.
In a preferred embodiment of the present invention, the color bar splitting channel further includes splitting outlets located at upper and lower sides of the color bar splitting cone, respectively, the first color bar channel is communicated with the splitting outlet below the color bar splitting cone, the second color bar channel is communicated with the splitting outlet above the color bar splitting cone, a channel depth at a channel inlet of the first color bar channel is less than a channel depth at a channel inlet of the second color bar channel by 0.5mm, and a channel width at a channel inlet of the first color bar channel is less than a channel width at a channel inlet of the second color bar channel by 1 mm.
In a preferred embodiment of the present invention, the size of the notch at the outlet of the first color bar channel is larger than the size of the notch at the outlet of the second color bar channel.
In a preferred embodiment of the present invention, two color bar auxiliary machines are further included, and are disposed on the same plane, wherein one color bar auxiliary machine is disposed perpendicular to the color bar tap, and the other color bar auxiliary machine is disposed obliquely to the color bar tap.
In a preferred embodiment of the invention, the color bar splitting die further comprises a die core cavity arranged at one end of the die core, a fixing part arranged at the other end of the die core, the die core is fixedly arranged on the machine head through the fixing part, a die cover is arranged at the front end of the die core cavity, the die cover fixes the color bar splitting cone and the color bar die sleeve, and an injection molding machine communicated with the die core cavity is arranged on the side surface of the die core.
In a preferred embodiment of the present invention, the position of the color bar spreader cone is fixedly connected to the machine head through a positioning pin, and the color bar die sleeve is mounted on the color bar spreader cone through the positioning pin.
The invention has the beneficial effects that:
according to the double-heterochrosis strip sheath, the traditional single color strip and the traditional multiple color strips are distinguished, the two color strips with different colors are arranged in parallel to form the heterochrosis strip, and the two heterochrosis strips are symmetrically arranged, so that the form of the sheath color strip is further expanded, and the identification degree is improved;
the double-different-color-bar sheath extrusion die adopts the color bar spreader cone and the special double-color-bar four-runner die sleeve to be matched, realizes the extrusion of the double-different-color-bar sheath, can switch specifications according to different requirements, only needs to replace the color bar die sleeve, is suitable for the requirements of various color bar optical cables, and improves the productivity of products.
Drawings
FIG. 1 is a schematic structural view of a dual-different color stripe jacket of the present invention;
FIG. 2 is a schematic view of the overall structure of the dual different-color strip sheath extrusion die of the present invention;
FIG. 3 is a three-dimensional view of the dual different color stripe jacket color stripe pattern of the present invention;
the reference numbers in the figures illustrate: 1. a sheath body; 2. a first color bar; 3. a second color bar; 4. a mold core; 5. a color bar spreader cone; 6. a color bar die sleeve; 7. a first color bar flow channel; 8. a second color bar flow channel; 9. a flow channel inlet; 10. a flow channel outlet; 11. and (7) covering the die.
Detailed Description
The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.
Referring to fig. 1, an embodiment of the double-different-color-strip sheath of the present invention includes a sheath body 1 in a circular tube shape and used for covering a cable core, two pairs of double-different-color strips arranged in parallel are embedded outside the sheath body 1, the double-different-color strips include two first color strips 2 and two second color strips 3 which are arranged in parallel and have different colors, the two pairs of double-different-color strips are symmetrically arranged, two first color strips 2 of the two pairs of double-different-color strips are arranged on one side, and two second color strips 3 of the two pairs of double-different-color strips are arranged on one side.
Specifically, the wall thickness of the first color bar 2 and the second color bar 3 accounts for 1/3 of the total wall thickness of the sheath body, and the first color bar 2 and the second color bar 3 are embedded into the sheath body 1, have the same radian as the sheath body 1, and have no bulge or recess, so that the roundness of the sheath body 1 is ensured.
Specifically, in order to ensure the independence of the first color bar 2 and the second color bar 3, a gap is arranged between the first color bar 2 and the second color bar 3, and the gap between the first color bar 2 and the second color bar 3 is less than 0.1 mm.
Specifically, in order to improve the aesthetic appearance of the double-color stripe, the widths of the first color stripe 2 and the second color stripe 3 are the same.
Specifically, the sheath body 1 and the double-color strips are both made of low-smoke halogen-free flame-retardant sheath materials, and the low-smoke halogen-free flame-retardant sheath materials are ultraviolet-resistant, waterproof, mildew-resistant and resistant to environmental stress cracking; and no acid gas is released, the device is not corroded, and the flame retardant is suitable for use at a high flame retardant level.
Referring to fig. 2-3, in order to extrude the above-mentioned double-different-color strips, this embodiment further provides an embodiment of an extrusion mold for a sheath of double-different-color strips, which includes a mold core 4, a color strip diversion cone 5 and a color strip mold sleeve 6, the color strip diversion cone 5 includes two color strip diversion grooves arranged independently, diversion inlets of the two color strip diversion grooves are respectively communicated with two color strip auxiliary machines to extrude two color strip materials with different colors, independent supply of the two color strip materials is realized through the color strip diversion grooves, a first color strip flow passage 7 and a second color strip flow passage 8 are arranged on the color strip mold sleeve 6, flow passage inlets 9 of the first color strip flow passage 7 and the second color strip flow passage 8 are respectively communicated with diversion outlets of the two color strip diversion grooves, the first color strip flow passage 7 and the second color strip flow passage 8 diverge from the mold sleeve inlet 9 and extend to two sides of the color strip mold sleeve 6, the first color bar flow channel 7 and the second color bar flow 8 are both provided with two flow channel outlets 10, the flow channel outlets 10 are symmetrically arranged on two sides of the color bar die sleeve 6, and the included angle between each flow channel outlet 10 and the die sleeve inlet 9 is 90 degrees; the color bar materials of different colors extruded by the two color bar auxiliary machines are firstly respectively guided into a first color bar flow channel 7 and a second color bar flow channel 8 on the color bar die sleeve 6 through color bar shunting grooves in the color bar shunting cones 5, and the color bar materials of the same color respectively flow out from two sides of the color bar die sleeve 6 through the internal bifurcation design in the first color bar flow channel 7 and the second color bar flow channel 8, so that the double-different color bars are formed by extrusion molding.
Specifically, according to the demand of difference, only need to change the colour bar die sleeve 6, change or increase path and the quantity of colour bar runner in the colour bar die sleeve 6, can realize more setting to two different colour bars, be applicable to the demand of various colour bar optical cables, improve the productivity of product, the cost of colour bar mould 6 processing is 480% lower than the cost of 5 processing of colour bar reposition of redundant personnel awl to the cycle of processing is more than one time short, very big satisfy the ageing of production.
In this embodiment, in order to implement the shunting design in the color stripe mold sleeve 6, the shunting outlets of the color stripe shunting groove are respectively located at the upper side and the lower side of the color stripe shunting cone 5, the first color stripe channel 7 is communicated with the shunting outlet below the color stripe shunting cone 5, the second color stripe channel 8 is communicated with the shunting outlet above the color stripe shunting cone 5, so that the pressure when the color stripe material enters the first color stripe channel 7 and the second color stripe channel 8 is different, the positions of the first color stripe 2 and the second color stripe 3 relative to the sheath body 1 are different, when the radians of the first color stripe 2 and the sheath body 1 are controlled to be the same, the second color stripe 3 protrudes out of the sheath body 1, when the radians of the second color stripe 3 and the sheath body 1 are controlled to be the same, the first color stripe 2 is recessed relative to the sheath body 1, so as to implement the pressure balance between the inlet of the first color stripe channel 7 and the second color stripe channel 8, the groove depth of the runner inlet 9 of the first color bar runner 7 is 0.5mm less than the groove depth of the runner inlet 9 of the second color bar runner 8, the groove width of the runner inlet 9 of the first color bar runner 7 is 1mm less than the groove width of the runner inlet 9 of the second color bar runner 8, and the pressure is balanced by changing the size of the groove at the runner inlet 9.
Similarly, there is also a problem of pressure imbalance at the flow channel outlets 10 of the first color bar flow channel 7 and the second color bar flow channel 8, and therefore, the size of the notch at the flow channel outlet 10 of the first color bar flow channel 7 is set to be larger than the size of the notch at the flow channel outlet 10 of the second color bar flow channel 8.
Specifically, the one end of mold core 4 is provided with the mold core chamber, the other end of mold core 4 is provided with the fixed part, the mold core passes through fixed part fixed mounting at overhead, the front end in mold core chamber is provided with mould lid 11, mould lid 11 is fixed with colour bar reposition of redundant personnel awl 5 and colour bar die sleeve 6, the side of mold core 4 is provided with the injection molding machine that communicates with the mold core chamber, the mold core chamber is passed through to the cable core, the injection molding machine is to the mold core intracavity sheath material of moulding plastics.
Specifically, the position of the color bar spreader cone 5 is fixedly connected with the machine head through a positioning pin, the color bar die sleeve 6 is installed on the color bar spreader cone 5 through the positioning pin, and the relative positions of the machine head, the color bar spreader cone and the color bar die sleeve are fixed through the positioning pin.
Specifically, before extrusion molding, the color bar spreader cone 5 and the color bar die 6 are subjected to heat treatment, so that after the mounting head is heated, the hardness of the mounting head reaches more than HV55, and the mounting head is high in strength, wear-resistant and long in service life.
Specifically, the polishing smoothness of the color bar flow channel is larger than 0.4, the flow channel is ensured to be smooth, no material accumulation is generated, and the requirement of high-speed production in a sheathing process is met.
Specifically, in consideration of spatial position distribution and field layout, the two color bar auxiliary machines are arranged on the same plane, one color bar auxiliary machine is arranged perpendicular to the color bar spreader cone, and the other color bar auxiliary machine is arranged obliquely to the color bar spreader cone.
The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.
Claims (10)
1. The utility model provides a two different color strip sheaths, is used for the sheath body of cladding outside the cable core including the pipe form, its characterized in that, two pairs of parallel arrangement's two different color strips have been inlayed in the sheath body outside, and two pairs of two different color symmetries set up, and two homochromy strips set up in one side in two pairs of two different colors.
2. The dual color bar jacket of claim 1 wherein the wall thickness of the dual color bars is 1/3 of the total wall thickness of the jacket body.
3. The dual color bar jacket of claim 1 wherein a gap between two of the color bars in the dual color bar is less than 0.1 mm.
4. The sheath of claim 1, wherein the sheath body and the bi-different color strips are made of a low smoke, zero halogen, flame retardant sheath material.
5. A dual-different color bar sheath extrusion die is characterized by comprising a die core, a color bar shunting cone and a color bar die sleeve which are sleeved outside the die core, the color bar splitter cone comprises two independently arranged color bar splitter boxes, the splitter inlets of the two color bar splitter boxes are respectively communicated with the two color bar auxiliary machines to extrude two color bar materials with different colors, the color bar die sleeve is provided with a first color bar flow channel and a second color bar flow channel, the flow channel inlets of the first color bar flow channel and the second color bar flow channel are respectively communicated with the shunting outlets of the two color bar shunting grooves, the first color bar flow channel and the second color bar flow channel are branched from the inlet of the die sleeve and extend to two sides of the color bar die sleeve, the first color bar flow channel and the second color bar flow channel are both provided with two flow channel outlets, the flow channel outlets are symmetrically arranged on two sides of the color bar die sleeve, and each flow channel outlet and the die sleeve inlet form an included angle of 90 degrees.
6. The dual different color bar sheath extrusion die of claim 5, wherein the color bar splitter groove has splitter outlets respectively located at the upper and lower sides of the color bar splitter cone, the first color bar channel is communicated with the splitter outlet below the color bar splitter cone, the second color bar channel is communicated with the splitter outlet above the color bar splitter cone, the channel depth at the channel inlet of the first color bar channel is less than the channel depth at the channel inlet of the second color bar channel by 0.5mm, and the channel width at the channel inlet of the first color bar channel is less than the channel width at the channel inlet of the second color bar channel by 1 mm.
7. The bi-different color bar sheath extrusion die of claim 6, wherein the size of the notch at the runner outlet of the first color bar channel is larger than the size of the notch at the runner outlet of the second color bar channel.
8. The dual different color bar sheath extrusion die of claim 5, wherein the two color bar auxiliary machines are arranged on the same plane, one color bar auxiliary machine is arranged perpendicular to the color bar spreader cone, and the other color bar auxiliary machine is arranged obliquely to the color bar spreader cone.
9. The bi-different color bar sheath extrusion die of claim 5, wherein one end of the die core is provided with a die core cavity, the other end of the die core is provided with a fixing part, the die core is fixedly arranged on the machine head through the fixing part, the front end of the die core cavity is provided with a die cover, the die cover fixes the color bar shunting cone and the color bar die sleeve, and the side surface of the die core is provided with an injection molding machine communicated with the die core cavity.
10. The dual different color bar sheath extrusion die of claim 5, wherein the color bar spreader cone is fixedly connected to the die head by a positioning pin, and the color bar die sleeve is mounted on the color bar spreader cone by a positioning pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010980755.8A CN112192823B (en) | 2020-09-17 | 2020-09-17 | Double-heterochromatic strip sheath and extrusion die thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010980755.8A CN112192823B (en) | 2020-09-17 | 2020-09-17 | Double-heterochromatic strip sheath and extrusion die thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112192823A true CN112192823A (en) | 2021-01-08 |
| CN112192823B CN112192823B (en) | 2022-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010980755.8A Active CN112192823B (en) | 2020-09-17 | 2020-09-17 | Double-heterochromatic strip sheath and extrusion die thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114043700A (en) * | 2021-10-29 | 2022-02-15 | 东莞市瓦特机械设备有限公司 | Liquid silica gel double-color high-speed glue injection method |
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