Yarn manufacturing device
AssigneeMurata Machinery, Ltd.
InventorsFumiaki Yano, Shuichi Fukuhara, Hiroki Takashima
Life of this patent
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Abstract
A yarn producing apparatus for producing carbon nanotube (CNT) yarn by aggregating CNT fibers. A front roller continuously draws the CNT fibers from at least one CNT forming substrate, a yarn producing unit aggregates the CNT fibers drawn by the front roller, and a status monitors a state of the CNT fibers drawn from the CNT forming substrate, or the CNT yarn.
Claims15
A yarn producing apparatus that produces carbon nanotube yarn by aggregating carbon nanotube fibers, the yarn producing apparatus comprising:
- a drawing unit configured to continuously draw the carbon nanotube fibers from at least one carbon nanotube forming substrate,
- a yarn producing unit including a nozzle and an air supply arranged downstream of the drawing unit and configured to aggregate the carbon nanotube fibers drawn by the drawing unit by twisting or false twisting,
- a yarn status sensor that monitors characteristics of the carbon nanotube fibers drawn from the carbon nanotube forming substrate, or the carbon nanotube yarn,
- wherein the yarn status sensor is a yarn thickness detecting sensor configured to detect a thickness of a carbon nanotube yarn, and
- the yarn producing apparatus includes a controller configured to control an amount of the carbon nanotube fibers drawn by the drawing unit in accordance with a monitoring result in the yarn status sensor, wherein
- the controller controls the amount of carbon nanotube fibers drawn by the drawing unit by changing a speed of drawing the carbon nanotube fibers in the drawing unit, and controlling an amount of air supply to the nozzle in the air supply unit.
A yarn producing apparatus that produces carbon nanotube yarn by aggregating carbon nanotube fibers, the yarn producing apparatus comprising:
- a drawing unit that continuously draws the carbon nanotube fibers from at least one carbon nanotube forming substrate,
- a yarn producing unit arranged downstream of the drawing unit that aggregates the carbon nanotube fibers drawn by the drawing unit, and
- a yarn status sensor that monitors selected characteristics of the carbon nanotube fibers drawn from a carbon nanotube forming substrate, or the carbon nanotube yarn,
- wherein the yarn producing apparatus further includes 1) a controller that controls an amount of the carbon nano tube fibers drawn by the drawing unit in accordance with a monitoring result in the yarn status sensor and 2) a drawing count changing unit configured to change a number of carbon nanotube forming substrates from which the carbon nanotube fibers are drawn, from the plurality of carbon nanotube forming substrates, and
- the controller controls the drawing count changing unit to change the number of carbon nanotube forming substrates from which the carbon nanotube fibers are drawn, thereby controlling the amount of carbon nanotube fibers drawn by the drawing unit,
- the controller controls the amount of carbon nanotube fibers drawn by the drawing unit by changing a speed of drawing the carbon nanotube fibers in the drawing unit, and controlling an amount of air supply in an air supply unit to a nozzle in the yarn producing unit.
Dependencies are inferred from the claim text.