| 摘要 |
PROBLEM TO BE SOLVED: To perform jointing in large amounts at low manufacturing costs by continuously and accurately performing heating treatment and cooling treatment, though the jointing treatment for each article has been conventionally performed. SOLUTION: In this return type welding device or a pressure/hot press device, articles to be molded are placed on a plurality of mold stands; a rotary cross roller ring is provided, so that the next jointing operation can be prepared while an operation for joining at least one article is performed; and control can be performed so that cooling can be performed by automatically blowing off air by a cooling blow, when a welding operation is completed. COPYRIGHT: (C)2005,JPO&NCIPI
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