Thread production device

Patent metadata

Field	Value
Publication number	US-10017882-B2
Application number	US-201314904825-A
Country	US
Kind code	B2
Filing date	Jul 22, 2013
Priority date	Jul 22, 2013
Publication date	Jul 10, 2018
Grant date	Jul 10, 2018

Abstract

A yarn producing apparatus produces CNT (carbon nanotube) yarn from CNT fibers while causing the CNT fibers to run. The yarn producing apparatus includes a wind driving mechanism that causes a winding shaft provided with a winding tube to rotate about a winding centerline of the winding shaft to wind the CNT yarn onto the winding tube, a twist driving mechanism that causes a guide to rotate around the winding tube and guide the CNT yarn to the winding tube, to twist the CNT fibers and produce the CNT yarn while causing the CNT fibers, CNT yarn, or both to swirl, and a traverse driving mechanism that causes the guide to reciprocate relative to the winding tube along the winding centerline of the winding shaft to cause the CNT yarn to traverse the winding tube.

First claim

The invention claimed is:

1. A yarn producing apparatus for producing yarn from fibers while causing the fibers to run, the yarn producing apparatus comprising:
a wind driving mechanism that causes a winding shaft provided with a winding tube to rotate about a winding centerline of the winding shaft to wind the yarn onto the winding tube;
a twist driving mechanism that causes a guide to rotate around the winding tube and guide the yarn to the winding tube to twist the fibers and produce the yarn while causing the fibers, the yarn, or both of the fibers and the yarn to swirl;
a traverse driving mechanism that causes the guide to reciprocate relative to the winding tube along the winding centerline of the winding shaft to cause the yarn to traverse the winding tube; and
a controller that controls each of the wind driving mechanism, the twist driving mechanism, and the traverse driving mechanism independently such that the twist driving mechanism twists the fibers and produces the yarn while forming a balloon by swirling the fibers, the yarn, or both of the fibers and the yarn; wherein
the fibers are carbon nanotube fibers; and
the yarn is a carbon nanotube yarn.

2. The yarn producing apparatus according to claim 1 , further comprising a substrate support that supports a carbon nanotube forming substrate from which the carbon nanotube fibers are drawn.

3. The yarn producing apparatus according to claim 2 , further comprising:
a frame that supports the wind driving mechanism and the traverse driving mechanism; and
a stage attached to the frame and that reciprocates along the winding centerline of the winding shaft and supports the twist driving mechanism; wherein
the wind driving mechanism includes:
a wind driving source fixed to the frame; and
a winding force transmitting mechanism that rotates the winding shaft about the winding centerline of the winding shaft by driving force of the wind driving source;

the twist driving mechanism includes:
a twist driving source fixed to the stage; and
a twisting force transmitting mechanism that rotates the guide around the winding tube by driving force of the twist driving source;

the traverse driving mechanism includes:
a traverse driving source fixed to the frame; and
a traverse force transmitting mechanism that causes the stage to reciprocate along the winding centerline of the winding shaft due to a driving force of the traverse driving source to cause the guide to reciprocate relative to the winding tube along the winding centerline of the winding shaft.

4. The yarn producing apparatus according to claim 1 , further comprising:
a frame that supports the wind driving mechanism and the traverse driving mechanism; and
a stage attached to the frame and that reciprocates along the winding centerline of the winding shaft and supports the twist driving mechanism; wherein
the wind driving mechanism includes:
a wind driving source fixed to the frame; and
a winding force transmitting mechanism that rotates the winding shaft about the winding centerline of the winding shaft by driving force of the wind driving source;

the twist driving mechanism includes:
a twist driving source fixed to the stage; and
a twisting force transmitting mechanism that rotates the guide around the winding tube by driving force of the twist driving source;

the traverse driving mechanism includes:
a traverse driving source fixed to the frame; and
a traverse force transmitting mechanism that causes the stage to reciprocate along the winding centerline of the winding shaft due to a driving force of the traverse driving source to cause the guide to reciprocate relative to the winding tube along the winding centerline of the winding shaft.

Assignees

• Murata Machinery Ltd

Inventors

• Takashima Hiroki

Classifications

• D02G3/16

  Yarns or threads made from mineral substances · CPC title

• D01H1/04 Primary

  flyer type · CPC title

• D10B2101/122

  Nanocarbons · CPC title

• D01F9/127

  by thermal decomposition of hydrocarbon gases or vapours {or other carbon-containing compounds in the form of gas or vapour, e.g. carbon monoxide, alcohols} · CPC title

• B65H2701/314

  Carbon fibres · CPC title