To provide a mold position detection device capable of accurately detecting the position of a mold mounted on a mold mounting part.
On the inner wall of a mold mounting part, a power feeding electrode 31 and a plurality of detection electrodes 32 are provided. When a mold having a power receiving electrode and a displacement electrode is mounted on the mold mounting part, the power feeding electrode 31 and the power receiving electrode face each other, and one of the plurality of detection electrodes 32 and the displacement electrode face each other. A pair comprising the power feeding electrode 31 and the power receiving electrode and a pair comprising the one of the plurality of detection electrodes 32 and the displacement electrode form a capacitor circuit. The capacitance of the capacitor circuit varies according to the position of the mold with respect to the longitudinal direction of the mold mounting part. A mold position detection unit 11 feeds an AC power feeding signal to the power feeding electrode 31. A voltage information extraction section 330 extracts voltage information which varies according to the capacitance of the capacitor circuit from the one of the plurality of detection electrodes 32. On the basis of the extracted voltage information, a position detection operation section 111 detects a position in the longitudinal direction of the mold mounting part where the mold is mounted.
ARISTOPHANE GOUDJANOU
SUGANO KAZUHIRO
JP2005334973A | 2005-12-08 | |||
JPS62235503A | 1987-10-15 | |||
JP2005074446A | 2005-03-24 | |||
JP2001219221A | 2001-08-14 | |||
JPH0337517A | 1991-02-18 |
Iwa Saki Kokuni
Shunichi Takahashi
Masakazu Ito
Toshio Takamatsu
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