A kind of former of fibre bundle and forming method thereof
Technical field
The invention belongs to fiber optic cable manufacture technical field, specifically, relate to a kind of former and forming method thereof of fibre bundle.
Background technology
At present, the development of building along with Fiber to the home (FTTH), the sustainable growth of transinformation and broadband services demand, obviously increases the demand of high fiber count cable.A large amount of construction of Metropolitan Area Network (MAN) and Access Network, make the laying conduit resource of city optical cable more and more valuable, and high fiber count cable is subject to the restriction in urban Underground pipeline space.
China is a large amount of feeder line optical fibre band optical cables of laying in Metropolitan Area Network (MAN) and Access Network just, and cable configuration has central beam tube type, loose sleeve layer strand type and skeleton three kinds.Slotted core fiber ribbon cable production equipment has high input, and technique is the most complicated, and production cost is the highest.The primary structure of China's optical fibre band optical cable is that fibre ribbon spiral twists into loose sleeve structure, this structure has an obvious problem, be exactly because its radius of spin of fibre ribbon of different layers is different, the difference in length that occurs central core and boundary layer fibre ribbon, exists the shortcomings such as remaining length is inhomogeneous, optical fiber excessive distortion in addition.Simultaneously due to the spiral wring of fibre ribbon, make fibre ribbon form an almost fixing laminated body, make all the other longly be difficult to do large, when bearing short-term pulling force, the adaptability to changes that optical fiber is subject to is larger.In order to improve hot strength, have to increase reinforcement diameter, cause the diameter of optical cable and hardness also to increase thereupon, to construction, make troubles, also greatly increased installation cost, also consumed limited urban duct space simultaneously.Yet the fibre bundle density of optic fibre that fibre bundle manufacture method of the prior art and mould are produced is lower, and production cost is higher, and production efficiency is low.
Summary of the invention
One of object of the present invention is: overcome shortcoming of the prior art, a kind of former of fibre bundle is provided, it has feature simple in structure, that cost is low, production efficiency is high, the fibre bundle density of optic fibre of its production is high, can effectively reduce diameter and the weight of high fiber count cable, conveniently use and install.
Two of object of the present invention is: overcome shortcoming of the prior art, a kind of forming method of light shafts is provided, by this forming method, light shafts production cost is reduced, production efficiency improves, and the density of optic fibre of the fibre bundle of producing by this forming method is high, can effectively reduce the diameter of high fiber count cable, can make high fiber count cable be applicable to existing Urban Underground and lay in pipeline, also reduced the raw materials consumption in fiber optic cable manufacture, reduced cost simultaneously.
In order to solve the problems of the technologies described above, one of object of the present invention is achieved through the following technical solutions:
A former for fibre bundle,
Comprise successively and be with paying out machine, polymerization mould, preforming tool, intermittent application mould, ultraviolet curing device and take-up;
Preforming tool has forming cavity, the inwall of forming cavity is provided with forming tank, the cross section of forming cavity forms for being arranged by some circular arc circular array, one end of forming cavity is set to moulding import, other one end of forming cavity is set to moulding outlet, and the area of the cross section that forming cavity exports from moulding import to moulding is convergent setting;
Intermittent application mould is the tubular structure with hollow cavity, the inwall of intermittent application mould is provided with groove, the cross section of hollow cavity forms for being arranged by some circular arc circular array, the outer peripheral edges of intermittent application mould offer and apply hole group, and some coatings hole that coating Kong Zuwei circular array is arranged and the inner orifice that applies hole are connected with hollow cavity.
Further, apply the inner orifice position in hole corresponding to the junction setting of two circular arcs.
Further, along being axially provided with two groups and applying hole groups of intermittent application mould, and every group of quantity setting that applies the equal respective slot of number in hole.
Preferably, one end of intermittent application mould is for applying import, and other one end of intermittent application mould is for applying outlet, and hollow cavity is convergent setting from applying import to the area that applies the cross section of outlet.
Two of object of the present invention is achieved through the following technical solutions:
A forming method for fibre bundle, adopts above-mentioned former, comprises the following steps:
(1) polymerization: by some optical fiber and be with on paying out machine and accurately locate through polymerization mould, the optical fiber of some dispersions is drawn in together;
(2) preformed: the optical fiber process preforming tool by drawing in together, pushes for the first time as pencil optical fiber;
(3) coated with resins: pencil optical fiber is through intermittent application mould, in coating ultraviolet light curing resin, again push pencil optical fiber, UV-cured resin adds intermittent application mould off and on by applying hole, by the outside of pencil optical fiber coating ultraviolet light curing resin at certain intervals;
(4) solidify: pencil optical fiber is through ultraviolet curing device, and the UV-cured resin that the outside of pencil optical fiber is applied is cured formation fibre bundle;
(5) take-up: adopt take-up that fibre bundle is collected on fibre bundle dish.
Further, the color of UV-cured resin can be selected any one in all colours of national standard chromatogram, in order to distinguish fibre bundle.
Further, UV-cured resin is 5mm to 8mm along the axial length of fibre bundle.
Further, the spacing distance between UV-cured resin is 20mm to 25mm.
Further, the number of fibers of fibre bundle is 2 to 12.
Compared with prior art, the invention has the beneficial effects as follows:
The former of a kind of fibre bundle of the present invention, by and be with paying out machine, polymerization mould, preforming tool, intermittent application mould, ultraviolet curing device and take-up assemble fibre bundle by the optical fiber of dispersion, and optical fiber is by entering by moulding import the preforming tool of the hollow tubular structure of the tapered diameter that to moulding outlet is cross section, make optical fiber be subject to certain pressure, gap between optical fiber and optical fiber reduces, density improves, be pre-formed as pencil optical fiber, when by preforming tool, the forming tank that the circular array of preforming tool inwall is arranged makes omnibearing being squeezed in the process of optical fiber preform, make optical fiber more tight, there is no unnecessary gap, be conducive to improve density of optic fibre, when in like manner optical fiber is through intermittent application mould, the groove that its inner circular array is arranged also plays the effect of comprehensive extruding pencil optical fiber, make pencil optical fiber more tight, because required loose casing inner diameter is less, pine sleeve pipe external diameter can reduce more than 20% relatively, with the pine cover central beam tube type of this manufacture or the optical cable of loose sleeve layer strand type, has cable outer diameter little, density of optic fibre is larger, lightweight advantage, simultaneously, at the peripheral intermittent application UV-cured resin of pencil optical fiber, saved resin, and optical fiber has certain free degree, influencing each other between optical fiber is little, and the stress that optical fiber is subject to is little.
The forming method of a kind of fibre bundle of the present invention, by polymerization, preformed, coated with resins, solidify and the several steps of take-up, the fibre that will fall apart is shaped to highdensity pencil optical fiber, polymerization procedure tentatively makes loose fibre gather, preformed step, adopting preforming tool to make the optical fiber preform gathering together is pencil optical fiber, coated with resins step, further push pencil optical fiber, make it more tight, and by UV-cured resin intermittent application outside pencil optical fiber, after curing schedule, fibre bundle moulding is complete, obtain density large and there is the fibre bundle of certain free degree, resin is intermittent application, raw material have been saved, production cost is lower.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention, in the accompanying drawings:
Fig. 1 is the structural representation of fibre bundle of the present invention;
Fig. 2 be in Fig. 1 A to structural representation;
Fig. 3 is the structural representation of preforming tool of the present invention;
Fig. 4 is the structural representation of intermittent application mould of the present invention;
Fig. 5 is the structural representation of the former of a kind of fibre bundle of the present invention.
In Fig. 1 to Fig. 5, include:
1---optical fiber, 2---fibre bundle,
3---UV-cured resins, 4---and be with paying out machine,
5---polymerization mould, 6---preforming tool,
7---intermittent application mould, 8---ultraviolet curing device,
9---take-up, 10---forming tank,
11---groove, 12---coating hole,
13---moulding import, 14---moulding outlet,
15---applying import, 16---apply outlet.
The specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
As shown in Figures 3 to 5, the former of a kind of fibre bundle of the present invention,
Comprise successively and be with paying out machine 4, polymerization mould 5, preforming tool 6, intermittent application mould 7, ultraviolet curing device 8 and take-up 9.Preforming tool 6 has forming cavity, the inwall of forming cavity is provided with forming tank 10, the cross section of forming cavity forms for being arranged by some circular arc circular array, one end of forming cavity is set to moulding import 13, other one end of forming cavity is set to moulding outlet 14, and forming cavity exports 14 cross section area from moulding import 13 to moulding is convergent setting.Intermittent application mould 7 is for having the tubular structure of hollow cavity, the inwall of intermittent application mould 7 is provided with groove 11, the cross section of hollow cavity forms for being arranged by some circular arc circular array, the outer peripheral edges of intermittent application mould 7 offer and apply 12 groups, hole, apply 12 groups, hole and are some coatings hole 12 that circular array arranges and the inner orifice that applies hole 12 and be connected with hollow cavity.Further, apply the inner orifice position in hole 12 corresponding to the junction setting of two circular arcs.Its place, gap corresponding to two optical fiber 1 of pencil optical fiber 1, is convenient to UV-cured resin 3 optical fiber 1 is bonded together.And it is interior mobile at groove 11 to be convenient to resin, forms patchy adhesion, and pencil optical fiber 1 is wrapped up, bonding firm.Further, along being axially provided with two groups and applying 12 groups, holes of intermittent application mould 7, and every group of quantity setting that applies the equal respective slot 11 of number in hole 12.Be convenient to the comprehensive coating of 360 degree, wrap pencil optical fiber 1.Improve coating efficiency, can increase optical fiber 1 speed of service, enhance productivity.Preferably, one end of intermittent application mould 7 is for applying import 15, and other one end of intermittent application mould 7 is for applying outlet 16, and hollow cavity is convergent setting from applying import 15 to the area that applies the cross section of outlet 16.Widely mouthful enter slot and go out, further push pencil optical fiber 1, its diameter is fixed and without any gap, optical fiber 1 density is high.
A forming method for fibre bundle, adopts the former of above-mentioned light shafts, comprises the following steps: (1) polymerization: by some optical fiber 1 and be with on paying out machine 4 and accurately locate through polymerization mould 5, the optical fiber 1 of some dispersions is drawn in together.(2) preformed: the optical fiber 1 process preforming tool 6 by drawing in together, push for the first time as pencil optical fiber 1, be pre-formed as pencil optical fiber 1.(3) coated with resins: pencil optical fiber 1 is through intermittent application mould 7, in coating ultraviolet light curing resin 3, again push pencil optical fiber 1, UV-cured resin 3 adds intermittent application mould 7 off and on by applying hole 12, by the outside of pencil optical fiber 1 coating ultraviolet light curing resin 3 at certain intervals.Post forming, further improves optical fiber 1 density, and extruding when applying, and makes optical fiber 1 resilience of having no chance.(4) solidify: pencil optical fiber 1 is through ultraviolet curing device 8, and the UV-cured resin 3 that the outside of pencil optical fiber 1 is applied is cured and forms fibre bundle 2.(5) take-up: adopt take-up 9 that fibre bundle 2 is collected on fibre bundle dish.Further, the color of UV-cured resin 3 can be selected any one in all colours of national standard chromatogram, in order to distinguish fibre bundle 2.As shown in Figure 1 and Figure 2, UV-cured resin 3 is 5mm to 8mm along the axial length of fibre bundle 2.Further, the spacing distance between UV-cured resin 3 is 20mm to 25mm.Further, optical fiber 1 quantity of fibre bundle 2 is 2 to 12.
The course of work of the present invention is:
As shown in Figure 5, loose fine by and be with paying out machine 4 unwrapping wire, and then gather by polymerization mould 5, the optical fiber 1 of gathering penetrates preforming tool 6 by wider entrance, by narrower moulding outlet 14, passed, optical fiber 1 is pre-formed as to pencil optical fiber 1, pencil optical fiber 1 is through intermittent application mould 7, UV-cured resin 3 intermittent application are outside pencil optical fiber 1, after ultraviolet curing device 8, UV-cured resin 3 hardening, are fixed to fibre bundle 2 as shown in Figure 1 and Figure 2 by pencil optical fiber, finally by take-up 9 by fibre bundle 2 rollings on fibre bundle dish.
Adopt the fibre bundle 2 of above-mentioned forming method manufacturing to compare with existing fibre ribbon, can not cause because of optical cable bending or fibre ribbon flange the fine transmission performance in limit to worsen, improved the bending property of optical cable; Because required loose casing inner diameter is less, loose sleeve pipe external diameter can reduce more than 20% relatively, with the pine cover central beam tube type of this manufacture or the optical cable of loose sleeve layer strand type, has cable outer diameter little, and optical fiber 1 density is larger, lightweight advantage; The bonding way at UV-cured resin 3 intervals, optical fiber 1 has certain free degree, and influencing each other between optical fiber 1 is little, and the stress that optical fiber 1 is subject to is little; Between fibre bundle 2 in same loose sleeve pipe, with the color differentiating of adhering resin, without with the tired color differentiating of pricking yarn, reduce production link, and convenient differentiation.
Finally it should be noted that: these are only the preferred embodiments of the present invention; be not limited to the present invention; although the present invention is had been described in detail with reference to embodiment; for a person skilled in the art; its technical scheme that still can record aforementioned each embodiment is modified; or part technical characterictic is wherein equal to replacement; but within the spirit and principles in the present invention all; any modification of doing, be equal to replacement, improvement etc., within protection scope of the present invention all should be included in.