Senju Metal Industry Co., Ltd.

Takashi Usuba

Takashi Sugihara

Toshihiko Mutsuji

Hirokazu Ichikawa

To enable the circuit board to be fixed on a predetermined position and to be conveyed to the solder processing portion. Conveying hooksthat hold the printed circuit board Wtherebetween, conveying chainsthat drive so that the conveying hooksare movable from a heater partto a solder bath, first framesA that guide the conveying chainsalong the heater part, second framesB that guide the conveying chainalong the solder bath, and an absorbing memberthat is provided between each of the first framesA and each of the second framesB and absorbs an expansion and contraction based on difference of any thermal expansion between the framesA,B and the conveying chainsare provided. Since the absorbing memberabsorbs the expansion and contraction based on difference of any thermal expansion between the framesA,B and the conveying chains, it is possible to prevent the conveying chainsfrom being deviated from the framesA,B. This enables the printed circuit board Wto be fixed on the predetermined position and to be conveyed to the heater partand the solder bath

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Saitama, Japan

Takashi Usuba