CN208654378U - A kind of extrusion moulding mold of fire-retardant 8 word optical cable, half squash type - Google Patents
A kind of extrusion moulding mold of fire-retardant 8 word optical cable, half squash type Download PDFInfo
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- CN208654378U CN208654378U CN201821284014.0U CN201821284014U CN208654378U CN 208654378 U CN208654378 U CN 208654378U CN 201821284014 U CN201821284014 U CN 201821284014U CN 208654378 U CN208654378 U CN 208654378U
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Abstract
The utility model discloses a kind of extrusion moulding molds of fire-retardant 8 word optical cable, half squash type, including die sleeve, mold core, it is characterized in that being equipped with cone-shaped inner hole in the die sleeve, die sleeve one end is equipped with figure of eight reinforced-core, core forms die orifice；Mold core has the circular cone guide face cooperated with die sleeve cone-shaped inner hole, and mold core has two strengthening core guide hole, cable core guide hole delivery outlets towards die sleeve molding die orifice one end, and wherein the forwardly convex strengthening core guide hole end surface in cable core guide hole portion forms a stage portion；Strengthening core guide hole, cable core guide hole converge to a ladder cavity in mold core, at all size sudden turns of events are arc transition in ladder cavity.It does not need to use and vacuumizes negative pressure ancillary equipment, extrusion moulding purpose of half squash type can be reached, in turn ensure that the smooth bright and clean, outer jacket of sheath shape and cable core bond close, wall thickness and outer diameter is stablized, and process adjustments are convenient, high production efficiency, long service life that mold core is wear-resistant.
Description
Technical field
The utility model relates to communications optical cables to be manufactured technology, and a kind of especially half squash type of fire-retardant 8 word optical cable is primary
Extrusion moulding mold.
Background technique
8 font self-support cables are a kind of optical cables suitable for long distance communication and interoffice communication.Its fiber transmission attenuation is small,
Dispersion is low, rationally designs because of it and accurately controls optical fiber excess length and stranding mode in Loose tube, optical cable is made to have excellent machine
Tool performance and environmental performance.Cable configuration is compact, can ensure that optical cable under rugged environment optical fiber not by stress.Because of its outdoor
Aerial cable laying operation is convenient, fast, is widely used in some countries in Southeast Asia.Traditional optical cable self-support cable manufacturing process,
For there is waterstop to prick the easy structures such as yarn longitudinal wrap, sheath production, such as patent announcement are substantially carried out using tubular molding tool
It number is CN203324547U, a kind of 8 word optical cables and mold for FTTH, mold includes external mold, internal model, and external mold has inner cone
Hole, the small end of internal taper hole set figure of eight through-hole, and internal model has the frustum that can protrude into internal taper hole, and the small end of frustum sets correspondence
The messenger wire of figure of eight through-hole wears pipe, cable core wears pipe, and extrusion molding space is formed between frustum and the hole wall of internal taper hole, frustum
Taper (β) is 15 ± 1 °.Due to using this tubular molding tool, need to vacuumize auxiliary production, because flame-proof material viscosity is low, extrusion molding
Poor fluidity is not easy negative pressure in production and shrinks, and bonds that not close, short axle outer diameter is big, shape there are optical cable outer jacket and cable core
The problems such as unstable, speed of production is low and take-up reel tool is big, there are many deficiencies for manufacturing process.
Summary of the invention
Purpose of the utility model is to solve the above problems, provide fire-retardant 8 word optical cable, half squash type of one kind and once squeeze
Molding die tool both can guarantee the smooth bright and clean, outer jacket of sheath shape and cable core bonding be close and process adjustments are convenient.
Above technical problems of the utility model are mainly solved by the following technical scheme: a kind of fire-retardant 8 word
Optical cable extrusion moulding mold of half squash type, including die sleeve, mold core, it is characterized in that being equipped with cone-shaped inner hole, mould in the die sleeve
It covers one end and is equipped with figure of eight reinforced-core, core molding die orifice；The mold core has the circular cone cooperated with die sleeve cone-shaped inner hole
Guide face, mold core have two strengthening core guide hole, cable core guide hole delivery outlets towards die sleeve molding die orifice one end, wherein cable core guide hole portion
Forwardly convex strengthening core guide hole end surface forms a stage portion；The stage portion is formed when molding materials pass through molding die orifice
One forward extrusion area；The strengthening core guide hole, cable core guide hole converge to a circular cone cavity in mold core.
In extrusion moulding mold of fire-retardant 8 word optical cable, half squash type above-mentioned, preferably, in the die sleeve taper
Hole, circular cone guide face surface be specular glassy surface, surface roughness Ra≤0.025 μm.
In extrusion moulding mold of fire-retardant 8 word optical cable, half squash type above-mentioned, preferably, the mold core female cone is empty
Two small end connection reinforcement core guide hole, cable core guide hole delivery outlets of chamber, strengthening core guide hole, cable core guide hole are distinguished in face die sleeve
Reinforced-core, the core of figure of eight arrangement form die orifice.
In extrusion moulding mold of fire-retardant 8 word optical cable, half squash type above-mentioned, preferably, the mold core outlet portion
Cable core guide hole end face is retracted die sleeve and forms 5~10mm of die orifice inner face.
In extrusion moulding mold of fire-retardant 8 word optical cable, half squash type above-mentioned, preferably, cable core guide hole portion to
Preceding protrusion strengthening core guide hole end surface forms a stage portion, and the height covering surface of the stage portion is that die sleeve forms die orifice " 8 " word
The reinforced-core hole location of shape and part intermediate connecting body position.
In extrusion moulding mold of fire-retardant 8 word optical cable, half squash type above-mentioned, preferably, the strengthening core guide hole packet
One section of cylinder is included to hold diameter section and hold the guide cone section that diameter section is connect by differential of the arc face, guide cone section and circular cone with the cylinder
Cavity transition position is arc surface.Not only can be to core wire by carrying out normotopia when die orifice convergent point, but also core wire can be reduced across die orifice
When by abrasion, while greatly improve die life.
In extrusion moulding mold of fire-retardant 8 word optical cable, half squash type above-mentioned, preferably, in the strengthening core guide hole
Cylinder hold diameter section and be inlaid with tungsten steel alloy core retainer plate, and it is 2-3mm that cylinder, which holds diameter segment length,.It was verified that this holds diameter
Segment length can not only reduce friction of the core wire in mold, but also can reduce die wear.
In extrusion moulding mold of fire-retardant 8 word optical cable, half squash type above-mentioned, preferably, the cable core guide hole includes
Cylinder holds diameter section and holds the guide cone section that diameter section is connect with the cylinder, and the guide cone section and circular cone cavity transition position are equal
For arc surface.
In extrusion moulding mold of fire-retardant 8 word optical cable, half squash type above-mentioned, preferably, the mold core feed inlet one
End is equipped with accurate thread section, and anti-return stepped ramp type seal section is equipped between accurate thread section and circular cone guide face, described anti-
The stepped ramp type diameter of sealed section that flows back is less than circular cone guide face diameter.
In extrusion moulding mold of fire-retardant 8 word optical cable, half squash type above-mentioned, preferably, cable core guide hole portion to
The stage portion that preceding protrusion strengthening core guide hole end surface is formed is rotary table nullisomic structure, and the rotary table nullisomic has axially disposed
Section, and the section is connect with rotary table nullisomic underrun radian.
The technical program is designed for the defect of existing 8 word fiber optic cable manufacture mold, equally by die sleeve and mold core group
At the circular cone guide face of cone-shaped inner hole and mold core in die sleeve constitutes squash type extrusion molding mode, forms die orifice towards die sleeve in mold core
One end has two delivery outlets of strengthening core guide hole and cable core guide hole, the end face of the two delivery outlets and die sleeve shaping mould inlet end face
Possess certain space, rather than protrudes into molding die orifice with traditional formed pipe, further, the cable core at 8 word optical cable major diameter positions
Guide hole portion is forwardly convex, and opposite strengthening core guide hole end surface forms a stage portion, and the stage portion in steel strand wires, (lead by strengthening core
Line), core just form a zone of positive pressure when passing through molding die orifice, be full of always by PE material when encapsulated and constantly from outer
Portion guiding region supplementary material, to avoid being not easy shrinkage phenomenon caused by because of negative pressure, and this forward extrusion area can be in product
Molding moment carries out fining homogenizing to clad PE material；Overcome that flame-proof material viscosity is low, extrusion molding poor fluidity causes simultaneously
Optical cable outer jacket and cable core degree of adhesion difference difficulty.A circular cone cavity is equipped in the mold core of this programme as steel strand wires and cable
Core wire imports space, at all size sudden turns of events is arc transition in the cavity, design without dead angle, perforate convenient for core wire.
Further, die sleeve cone-shaped inner hole, circular cone guide face surface are designed as specular glassy surface, are conducive to the smoothness of material extrusion.
Mold core female cone cavity small end connects strengthening core guide hole, the reinforced-core in two delivery outlet face die sleeves of cable core guide hole, cable
The molding die orifice of core wire and 8 word intermediate connecting bodies, and 5~10mm metric space is kept, form one and half squash types one
Secondary extrusion molding feature structure.And stage portion along 8 word height direction area covering 8-shaped reinforced-core hole locations, intermediate connecting body and
Part core hole location, makes extruding, bracing wire, cladding, uniformity, surface roughness reach optimum state.
In addition, be additionally provided on mold core anti-return stepped ramp type seal section and accurate thread section realize the adjusting of mold core position with
And prevent PE material from leading to buildup inside mold core into mold core seat.
The beneficial effects of the utility model are: not needing that half squash type can be reached using negative pressure ancillary equipment is vacuumized
Extrusion moulding purpose in turn ensures that the smooth bright and clean, outer jacket of sheath shape and cable core bond close, wall thickness and outer diameter is steady
It is fixed, and process adjustments are convenient, high production efficiency.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the utility model.
Fig. 2 is a kind of mold insert structure schematic diagram of the utility model.
Fig. 3 is the partial enlargement structural representation of Fig. 2.
In figure: 1. die sleeves, 2. mold cores, 21. circular cone cavitys, 22. strengthening core guide holes, 23. cable core guide holes, 24. circular cone water conservancy diversion
Face, 25. anti-return stepped ramp type seal sections, 26. accurate thread sections, 27. stage portions.
Specific embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
As shown in Figure 1, the present embodiment one kind extrusion moulding mold of fire-retardant 8 word optical cable, half squash type, by die sleeve 1 and phase
The mold core 2 of cooperation forms.
Wherein, cone-shaped inner hole is equipped in die sleeve 1, cone-shaped inner hole surface is specular glassy surface, and surface roughness Ra is
0.025μm；One end of die sleeve 1 is the molding die orifice of figure of eight reinforced-core, core and the two connector.
Mold core 2 is equipped with the circular cone guide face 24 cooperated with 1 cone-shaped inner hole of die sleeve, and the surface of circular cone guide face 24 is specular light
Damp face, Ra are 0.025 μm, as shown in Fig. 2, mold core 2 forms die orifice one end towards die sleeve 1 there is strengthening core guide hole 22, cable core to lead
23 two, hole delivery outlet, wherein cable core guide hole 23 forwardly convex 22 end surfaces of strengthening core guide hole form a stage portion 27, platform
The design in rank portion is formed a forward extrusion area when molding materials pass through molding die orifice, and 23 end face of cable core guide hole is retracted
Die sleeve 1 forms die orifice inner face 5mm, i.e., distance possesses 5mm between 23 end face of cable core guide hole and the molding of die sleeve 1 die orifice inner end.Into
One step, height (area) covering surface of the stage portion 27 are that die sleeve 1 forms the reinforced-core hole location of the die orifice figure of eight, in part
Between connector, (to some special 8 word optical cables, the core hole location less than 1/4 part note: can also be covered).Stage portion 27 is
A kind of rotary table nullisomic structure, rotary table nullisomic have axially disposed section, and the section and rotary table nullisomic underrun radian R
Connection；Formed 90 degree of angle > of the section and rotary table nullisomic bottom surface (i.e. strong 22 end face of core guide hole) (generally take 110~120
Degree).
Strengthening core guide hole 22, cable core guide hole 23 converge to the circular cone cavity 21 designed in mold core, that is, circular cone sky
The small end of chamber 21 extends to 23 two strengthening core guide hole 22, cable core guide hole delivery outlets, and strengthening core guide hole 22, cable core guide hole 23 are distinguished
Reinforced-core, the core of figure of eight arrangement in face die sleeve 1 form die orifice.In circular cone cavity 21 at all size sudden turns of events
It is arc transition.
Further, in terms of details, strong core guide hole 22 include one section of cylinder hold diameter section 221 and with the cylinder
The guide cone section 222 that diameter section 221 is connected by differential of the arc face is held, as shown in figure 3,21 transition position of guide cone section 222 and circular cone cavity
It is arc surface.Cylinder in strengthening core guide hole 22 holds diameter section 221 and is inlaid with tungsten steel alloy core retainer plate, and cylinder holds diameter segment length
Degree is 2.5mm.Similarly, cable core guide hole 23 also includes that cylinder holds diameter section and holds the guide cone section that diameter section is connect with cylinder, is led
It is arc surface to the transition position between cone section and circular cone cavity 21.
It is equipped with accurate thread section 26 in 2 feed inlet one end of mold core to connect with mold core seat, and in accurate thread section 26 and circular cone
Anti-return stepped ramp type seal section 25 is equipped between guide face 24,25 diameter of anti-return stepped ramp type seal section is less than circular cone water conservancy diversion
The diameter in face 24.
When work, it is this non-apart from size to adjust 5mm between 23 end face of cable core guide hole and the molding of die sleeve 1 die orifice inner end
Contact mold core die sleeve structure cooperates stage portion 27 to constitute " deposit " space, makes from 2 circular cone guide face 24 of mold core and die sleeve 1
The PE sheath material injected between cone-shaped inner hole gathers energy in buffering course, while in 2 strengthening core guide hole 22 of mold core, cable core
" twisted " is carried out under steel strand wires and the core effect that guide hole 23 inputs respectively in advance and is pressurized, keeps melt and core sufficiently viscous
It closes, 8 font self-support cables is formed under setting speed.By production, the present embodiment device operation stability is fully met respectively
Item test, examination requirements are suitble to produce in enormous quantities.
Above-described embodiment is the explanation to the utility model, is not the restriction to the utility model, and any pair of sheet is practical new
Structure etc. after the simple transformation of type belongs to the protection scope of the utility model.
Claims (10)
1. a kind of extrusion moulding mold of fire-retardant 8 word optical cable, half squash type, including die sleeve (1), mold core (2), it is characterized in that institute
It states and is equipped with cone-shaped inner hole in die sleeve, die sleeve one end is equipped with figure of eight reinforced-core, core forms die orifice；The mold core has
With die sleeve cone-shaped inner hole cooperation circular cone guide face (24), mold core towards die sleeve molding die orifice one end have strengthening core guide hole (22),
(23) two delivery outlets of cable core guide hole, wherein the forwardly convex strengthening core guide hole end surface in cable core guide hole portion forms a stage portion
(27)；The stage portion forms a forward extrusion area when molding materials pass through molding die orifice；The strengthening core guide hole, cable core
Guide hole converges to a circular cone cavity (21) in mold core.
2. extrusion moulding mold of fire-retardant 8 word optical cable, half squash type of one kind according to claim 1, which is characterized in that
The die sleeve cone-shaped inner hole, circular cone guide face (24) surface be specular glassy surface, surface roughness Ra≤0.025 μm.
3. extrusion moulding mold of fire-retardant 8 word optical cable, half squash type of one kind according to claim 1, which is characterized in that
(23) two delivery outlets of small end connection reinforcement core guide hole (22), cable core guide hole of mold core (2) the female cone cavity (21) are reinforced
Reinforced-core, the core of figure of eight arrangement in core guide hole, cable core guide hole difference face die sleeve (1) form die orifice.
4. extrusion moulding mold of fire-retardant 8 word optical cable, half squash type of one kind according to claim 1, which is characterized in that
Cable core guide hole (23) end face retraction die sleeve (1) of mold core (2) outlet portion forms 5~10mm of die orifice inner face.
5. extrusion moulding mold of fire-retardant 8 word optical cable, half squash type of one kind according to claim 1 or 4, feature exist
In forwardly convex strengthening core guide hole (22) end surface in cable core guide hole (23) portion forms a stage portion (27), the stage portion
Height covering surface be die sleeve (1) form the die orifice figure of eight reinforced-core hole location and part intermediate connecting body position.
6. extrusion moulding mold of fire-retardant 8 word optical cable, half squash type of one kind according to claim 1 or 2 or 3 or 4,
It is characterized in that, the strengthening core guide hole (22) holds diameter section (221) and hold diameter section with the cylinder including one section of cylinder to be passed through
The guide cone section (222) of differential of the arc face connection, guide cone section and circular cone cavity (21) transition position are arc surface.
7. extrusion moulding mold of fire-retardant 8 word optical cable, half squash type of one kind according to claim 6, which is characterized in that
Cylinder in the strengthening core guide hole (22) holds diameter section (221) and is inlaid with tungsten steel alloy core retainer plate, and cylinder holds diameter segment length
For 2-3mm.
8. extrusion moulding mold of fire-retardant 8 word optical cable, half squash type of one kind according to claim 1 or 2 or 3 or 4,
It being characterized in that, the cable core guide hole (23) includes that cylinder holds diameter section and holds the guide cone section that diameter section is connect with the cylinder,
The guide cone section and circular cone cavity (21) transition position are arc surface.
9. extrusion moulding mold of fire-retardant 8 word optical cable, half squash type of one kind according to claim 1, which is characterized in that
Described mold core (2) feed inlet one end is equipped with accurate thread section (26), and sets between accurate thread section and circular cone guide face (24)
There is anti-return stepped ramp type seal section (25), the anti-return stepped ramp type diameter of sealed section is less than circular cone guide face diameter.
10. extrusion moulding mold of fire-retardant 8 word optical cable, half squash type of one kind according to claim 1, which is characterized in that
The stage portion (27) that forwardly convex strengthening core guide hole (22) end surface in cable core guide hole (23) portion is formed is rotary table nullisomic structure,
The rotary table nullisomic has axially disposed section, and the section is connect with rotary table nullisomic underrun radian.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821284014.0U CN208654378U (en) | 2018-08-10 | 2018-08-10 | A kind of extrusion moulding mold of fire-retardant 8 word optical cable, half squash type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821284014.0U CN208654378U (en) | 2018-08-10 | 2018-08-10 | A kind of extrusion moulding mold of fire-retardant 8 word optical cable, half squash type |
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| Publication Number | Publication Date |
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| CN208654378U true CN208654378U (en) | 2019-03-26 |
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| CN201821284014.0U Active CN208654378U (en) | 2018-08-10 | 2018-08-10 | A kind of extrusion moulding mold of fire-retardant 8 word optical cable, half squash type |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710186A (en) * | 2018-08-10 | 2018-10-26 | 浙江亨通光网物联科技有限公司 | Extrusion moulding mold of fire-retardant 8 word optical cable, half squash type |
| CN111007610A (en) * | 2019-12-19 | 2020-04-14 | 江苏亨通光电股份有限公司 | Flat 8-shaped multi-core MPO optical cable and manufacturing method thereof |
| CN115179523A (en) * | 2022-08-29 | 2022-10-14 | 湖南美康光电有限公司 | Isobaric equal-wall-thickness concentric small splayed cable mold |
-
2018
- 2018-08-10 CN CN201821284014.0U patent/CN208654378U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108710186A (en) * | 2018-08-10 | 2018-10-26 | 浙江亨通光网物联科技有限公司 | Extrusion moulding mold of fire-retardant 8 word optical cable, half squash type |
| CN111007610A (en) * | 2019-12-19 | 2020-04-14 | 江苏亨通光电股份有限公司 | Flat 8-shaped multi-core MPO optical cable and manufacturing method thereof |
| CN115179523A (en) * | 2022-08-29 | 2022-10-14 | 湖南美康光电有限公司 | Isobaric equal-wall-thickness concentric small splayed cable mold |
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| CP01 | Change in the name or title of a patent holder |
Address after: 313009 No. 2299 East strong Garden Road, Nanxun Economic Development Zone, Huzhou, Zhejiang Patentee after: Zhejiang Dongtong optical network IOT Technology Co., Ltd Address before: 313009 No. 2299 East strong Garden Road, Nanxun Economic Development Zone, Huzhou, Zhejiang Patentee before: Zhejiang Hengtong optical network IOT Technology Co., Ltd. |
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| CP01 | Change in the name or title of a patent holder |