Mold for inflating, filling and forming of full-dry optical-cable loose tube

A technology for forming molds and loosening optical cables, which is applied in the field of inflatable filling forming molds for loose tubes of fully dry optical cables, can solve problems such as inability to manufacture, and achieve the effect of simple structure

Active Publication Date: 2015-05-13
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fully dry casing is filled with water-blocking yarn and compressed air. Since there is no fiber paste in the casing, it is convenient to clean, diverge and connect optical fibers. It has become a future development trend, but the existing loose-tube ointment injection system cannot be manufactured

Method used

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  • Mold for inflating, filling and forming of full-dry optical-cable loose tube
  • Mold for inflating, filling and forming of full-dry optical-cable loose tube
  • Mold for inflating, filling and forming of full-dry optical-cable loose tube

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Embodiment Construction

[0016] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0017] Such as figure 1 As shown, a fully dry type optical cable loose tube inflation filling molding mold includes an extrusion mold, a fiber guide tube, an inflatable support and an air source mechanism. The extrusion mold includes a machine head 8, a splitter cone 9, a mold core 14, The mold cover 15, the needle tube 10, and the diverter cone 9 are installed in the central cone hole of the machine head 8. The tail of the diverter cone 9 is a flange structure and is fixedly connected with the machine head 8 through bolts. The mold core 14 is clamped with the tip of the diverter cone. The mold cover 15 and the central taper hole of the machine head are installed with interference fit and positioned by the gland 16. The mold cover and the mold core form an annular flow channel, and the material enters...

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Abstract

The invention discloses a mold for inflating, filling and forming of a full-dry optical-cable loose tube. The mold comprises a plastic extruding mold, a fiber guide tube, an inflating support and an air source mechanism, wherein the inflating support sleeves the fiber guide tube so as to form a sealed cavity, and air guide holes and an air inlet are dissymmetrically formed in the fiber guide tube and the inflating support; filtration and graded depressurization are performed twice on compressed air when the compressed air sequentially passes through a filter device and a pressure regulating device, the depressurized air enters the fiber guide tube through the air guide holes, the air, water blocking yarn and optical fibers are uniformly and stably injected in a formed loose tube through the fiber guide tube so as to form a full-dry optical-fiber loose tube through plastic extruding. The mold disclosed by the invention is simple in structure, the after shrinkage of the loose tube is small, and the fiber excess length is stable and controllable.

Description

technical field [0001] The invention belongs to the technical field of fully dry optical cables, and in particular relates to a fully dry optical cable loose tube inflation filling forming mold. Background technique [0002] The secondary coating process of optical fiber is to select suitable polymer materials, adopt extrusion process, and under reasonable process conditions, put a loose tube with the same length as the optical fiber on the optical fiber. According to the different filling materials in the casing, the loose casing can be divided into ordinary fiber paste casing and fully dry casing. The fully dry casing is filled with water-blocking yarn and compressed air. Since there is no fiber paste in the casing, it is convenient to clean, diverge, and connect optical fibers. It has become a future development trend, and the existing loose-tube ointment injection system cannot be manufactured. Contents of the invention [0003] The technical problem to be solved by t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/12B29C48/30
CPCB29C48/30B29C48/32
Inventor 柯涛阎浩赵帅黄杰周珍福吴斌盛杨笛雨刘喆驰
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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