| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To discharge a sleeve supported by the mandrel with a sufficient impulse by using air, in relation to the mandrel used as a mold or the like upon production of the sleeve. <P>SOLUTION: The mandrel has, on a top edge part 31, a support outer surface 411 with a shape along the side surface inner side 26 of the sleeve 20, which has a tapered cylindrical shape whose diameter decreases toward the lower side and in which there is formed a curl 22 which is winded on the inside going around a lower edge 21 on the lower edge 21, and causes the top edge part 31 to enter an inner part of the sleeve 20 of an attitude, such that the bottom part is directed to the front side, to support the sleeve 20. The mandrel has an airflow path in which the sleeve 20 is fed to the front side with air by feeding air to the top edge part 31 of the mandrel 30 to blow air toward a plurality of parts in the round direction going around the lower edge 21 of the sleeve 20 or toward the whole periphery in the round direction in the curl 22 of the sleeve 20 in the state supported by the top edge part 31. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
