Title:
REWIND CONTROLLER
Document Type and Number:
Japanese Patent JPS61196789
Kind Code:
A
Abstract:
PURPOSE:To prevent a sheet material from slacking, tensioning or damaging due to variations in a tension by limiting the variation in a torque for a rewinder to the minimum limit when a drive motor of the rewinder is switched. CONSTITUTION:When a switching timing is detected by a switching timing detector 20, a motor 3 is started to control the speed by a speed controller 10 so as to coincide with the rotating speed of a motor 2. When a speed coincidence is detected by a speed synchronization detector 21, a relay coil R2 is excited, a contact S2A is closed, a contact S2B is opened to switch the motor 3 from the speed control to the current control and to simultaneously connect a clutch 13. At this time, the motor 2 is controlled by the normal current reference, and the motor 3 is controlled by the minimum current reference.
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Inventors:
SHINTAKU MOTOCHIKA
Application Number:
JP3520485A
Publication Date:
August 30, 1986
Filing Date:
February 26, 1985
Export Citation:
Assignee:
TOSHIBA CORP
International Classes:
H02P5/46; (IPC1-7): H02P5/46
Attorney, Agent or Firm:
Noriyuki Noriyuki