Speed control method and speed control apparatus for transfer device
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United States of America Patent
Stats
-
Aug 21, 2012
Grant Date -
Sep 23, 2010
app pub date -
Mar 18, 2010
filing date -
Mar 19, 2009
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An object is to simplify a drive control structure of a transfer device that is designed to stop running of a film when hologram forming or surface treatment is not performed, during which the film is not required to run, and restart the film running from the running stopped state. A speed control method for controlling film running speed of a transfer device includes starting the drive of the transfer device based on a pulse signal different from a pulse signal outputted according to the rotational number of the cylinder, when the transfer film held in running stopped state is moved from the first film running path to the second film running path to run in a docking or interlocking engagement with the cylinder held in rotating state, and performing speed matching control to match the film running speed of the transfer device to the rotational speed of the cylinder; and switching a control mode from the speed matching control into synchronization control that synchronizes the rotational speed of the cylinder with the film running speed of the transfer device based on the pulse signal from the cylinder, after the matching of the speeds.
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