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Method and apparatus for producing rod shape article with synthetic resin

A synthetic resin and manufacturing method technology, applied in the direction of fiber mechanical structure, etc., can solve the problems of high product loss, unstable winding tension, and reduced shape and dimensional accuracy of the synthetic resin liner layer.

Inactive Publication Date: 2003-11-05
UBE NITTO KASEI CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Manufacturing has to be interrupted during this period, and the shape must be stabilized after restarting manufacturing, resulting in a lot of product loss
[0006] In addition, the winding tension of the tensile body such as steel wire wound on the drum is not constant. If the tensile body is output in this state, the tension will fluctuate when it is sent out, and it will be formed in the extrusion molding machine. Decreased shape and dimension accuracy of synthetic resin bushing layer

Method used

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  • Method and apparatus for producing rod shape article with synthetic resin
  • Method and apparatus for producing rod shape article with synthetic resin
  • Method and apparatus for producing rod shape article with synthetic resin

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Embodiment Construction

[0029] Hereinafter, preferred embodiments of the present invention will be described in detail based on the drawings. Figure 1 to Figure 7 It shows an example of the manufacturing method and manufacturing apparatus of the synthetic resin stick-shaped object of this invention.

[0030] The manufacturing method and manufacturing apparatus shown in these figures illustrate the case where the present invention is applied to the manufacture of the fiber-carrying screw bushing S which is a synthetic resin rod. Such as figure 2 As shown in the middle cross-section, the spiral bushing S includes a tension-resistant body T disposed in the center and a body B formed by coating on its outer periphery. In the body B, a plurality of spiral grooves G are formed.

[0031] When manufacturing the spiral bushing S having such a structure, the tensile body T is fed out from the feeding device 10, the tensile body travels at a predetermined speed, and the body B is formed by continuously extru...

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Abstract

A method and apparatus for manufacturing a synthetic resin rod-shaped object, which is continuously extruded and coated with a thermoplastic resin on the outer periphery of a tensile body such as a steel wire traveling at a predetermined speed, and then cooled and solidified and form a coating layer. The manufacturing device is provided with a delivery device (10) for the tensile body before an extrusion molding machine for forming the coating layer. The feeding device (10) is provided with: a mounting part (32) for winding a spool (30) of a predetermined amount of the tensile body, an output device (34) of the tensile body (T), and a predetermined amount of the tensile body. A thread storage part (36) of the tensile body T and a tension imparting part (38) for imparting a predetermined tension to the traveling tensile body. The tension body (T) stores wires in a state in which the wire length can be changed on the wire storage part (36) having inlet and outlet wheels (36a), (36b) and a reversing wheel (36c). As a result, there is no interruption in production when the spool is changed.

Description

technical field [0001] The present invention relates to a synthetic resin rod-shaped object coated with a thermoplastic resin on a steel wire, for example, a method and a manufacturing apparatus for the rod-shaped object used for a tensile wire of a spiral bushing for carrying an optical fiber. Background technique [0002] As an apparatus for manufacturing a spiral bushing for carrying an optical fiber, for example, a technique proposed in Japanese Patent No. 2827183 is known. In the manufacturing device disclosed in this gazette, the basic configuration is that a vibration prevention device is provided between the delivery drum on which the tensile member such as steel wire is wound and the extruder, and the device is equipped with a device for preventing the tensile member from being sent out. The vibration of the anti-tension body sent out from the drum rotates at the same pace as the delivery speed of the anti-tension body, and the pair of annular members of the anti-te...

Claims

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Application Information

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IPC IPC(8): G02B6/44B29C47/02B29C47/04B29C47/08B29K105/22
CPCB29K2995/0077B29K2101/12B29C48/154B29C48/92
Inventor 星久夫星野孝之玉川广一
Owner UBE NITTO KASEI CO LTD
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