| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the consumption amount of air and the consumption power by shortening the operating period of time of a negative pressure means after a molded article has normally been sucked, and at the same time, to prevent a suction trace from being formed on the molded article by avoiding the suction pressure rising up then necessary after the molded article has normally been sucked. <P>SOLUTION: A fact that the molded article has been suction-held by a suction pad is determined when an actual suction pressure by the suction pad which is detected by the negative pressure (vacuumization) means and a suction pressure sensing means installed on a negative pressure path of the suction pad has reached a pre-set suction sensing pressure. The driving of the negative pressure means is stop-controlled when the detected actual suction pressure has reached a suction threshold value pressure which has been set at a lower value than the suction sensing pressure in advance. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
