Toyota Jidosha Kabushiki Kaisha

Hiromu Takai

Yutaka Sugie

Seiji Ishizu

Shou Ishiyama

A calibration determination device includes: a free roll that conveys the bonding member; a load detection device that detects a load applied to a bearing of the free roll; a tension adjustment device that winds the bonding member to increase a tension applied to the bonding member and unwinds the bonding member to reduce the tension applied to the bonding member so as to adjust the tension applied to the bonding member; and a calibration determination unit that determines whether calibration of the load detection device is necessary. The tension adjustment device unwinds the bonding member to cause the bonding member not to be subjected to the tension, and the calibration determination unit determines whether the calibration of the load detection device is necessary based on the load detected by the load detection device with the bonding member not being subjected to the tension.

Calibration determination device and calibration determination method for calibrating the tension of a bonding member

There is provided a technique that readily performs positioning of a joining member relative to a strip member during conveyance. A joining devicejoins a gas diffusion layerwith a first catalyst electrode layerof a strip bodywhich is a continuous strip member of a membrane electrode assembly, while conveying the strip body. A controllerof the joining deviceobtains a detection time tbased on a detection signal of a catalyst layer detectorwhen a front endof a second catalyst electrode layerplaced on the strip bodypasses through a detection point DP. The controllersubsequently obtains a joining position reach time tbased on the detection time twhen the gas diffusion layerreaches a press point PP of joining rollers. The controllerstarts conveying the gas diffusion layerby means of a transfer at a conveying start time tthat is obtained based on the joining position reach time tand a specified speed pattern of the transfer

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Nisshin, Japan

Hiromu Takai