Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
YARN CHANGING METHOD IN TRAVERSE GROUP CONTROL TYPE THREAD WINDING METHOD
Document Type and Number:
Japanese Patent JP3279106
Kind Code:
B2
Abstract:

PURPOSE: To smoothly change a yarn by shifting traverse speed to the lowest speed at wind starting in the case of fully wound or changing a yarn on the way and changing fully wound bobbins of a plurality of spindles or bobbins wound up on the way to empty bobbins in order, while keeping the speed constant.
CONSTITUTION: Drive motors 1 for four spindles are connected to an inverter 2 and inverters 2 are connected to a control unit 3. When a package (P) formed by wound around a bobbin 12 is filled (or changing its yarn on the way) in the first yarn winding process, a yarn change signal is outputted so that the yarn is changed to be wound around an empty bobbin 12 waiting in the bottom side. In this case, while traverse speed in fully wound or changing the yarn on the way is kept at the lowest speed at wind starting, yarns of all plural spindles are changed. This constitution enables to smoothly change the yarn without any yarn cut caused by abnormal tension generated in changing yarns of all the spindles.


Inventors:
Shuichi Hara
Masashi Hashimoto
Application Number:
JP32553294A
Publication Date:
April 30, 2002
Filing Date:
December 27, 1994
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Toray Industries, Inc.
International Classes:
B65H54/02; B65H54/28; B65H65/00; B65H67/048; (IPC1-7): B65H54/28; B65H54/02
Domestic Patent References:
JP3216460A
JP1294173A
JP494376A
Attorney, Agent or Firm:
Shinichi Ogawa (2 outside)