Abstract: 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.

Abstract: 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.

Abstract: There is provided a technique that readily performs positioning of a joining member relative to a strip member during conveyance. A joining device 100 joins a gas diffusion layer 7 with a first catalyst electrode layer 2 of a strip body 5r which is a continuous strip member of a membrane electrode assembly 5, while conveying the strip body 5r. A controller 101 of the joining device 100 obtains a detection time td based on a detection signal of a catalyst layer detector 130 when a front end 3e of a second catalyst electrode layer 3 placed on the strip body 5r passes through a detection point DP. The controller 101 subsequently obtains a joining position reach time tt based on the detection time td when the gas diffusion layer 7 reaches a press point PP of joining rollers 152. The controller 101 starts conveying the gas diffusion layer 7 by means of a transfer at a conveying start time ts that is obtained based on the joining position reach time tt and a specified speed pattern of the transfer 141.

Abstract: There is provided a technique that readily performs positioning of a joining member relative to a strip member during conveyance. A joining device 100 joins a gas diffusion layer 7 with a first catalyst electrode layer 2 of a strip body 5r which is a continuous strip member of a membrane electrode assembly 5, while conveying the strip body 5r. A controller 101 of the joining device 100 obtains a detection time td based on a detection signal of a catalyst layer detector 130 when a front end 3e of a second catalyst electrode layer 3 placed on the strip body 5r passes through a detection point DP. The controller 101 subsequently obtains a joining position reach time tt based on the detection time td when the gas diffusion layer 7 reaches a press point PP of joining rollers 152. The controller 101 starts conveying the gas diffusion layer 7 by means of a transfer at a conveying start time ts that is obtained based on the joining position reach time tt and a specified speed pattern of the transfer 141.