US 11,738,954 B2
Conveyance device
Toshiyuki Kusunoki, Iwata (JP); and Junichi Tsuyuki, Iwata (JP)
Assigned to YAMAHA HATSUDOKI KABUSHIKI KAISHA, Iwata (JP)
Appl. No. 17/782,486
Filed by YAMAHA HATSUDOKI KABUSHIKI KAISHA, Iwata (JP)
PCT Filed Dec. 17, 2019, PCT No. PCT/JP2019/049309
§ 371(c)(1), (2) Date Jun. 3, 2022,
PCT Pub. No. WO2021/124429, PCT Pub. Date Jun. 24, 2021.
Prior Publication US 2023/0002169 A1, Jan. 5, 2023
Int. Cl. B65G 43/08 (2006.01); B65G 54/02 (2006.01)
CPC B65G 43/08 (2013.01) [B65G 54/02 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A conveyance device comprising:
a slider;
a conveyor including a linear motor and a plurality of guide rails over which the slider is transferable, the conveyor being configured to convey the slider; and
a controller configured or programmed to acquire, based on a vibration in a connecting portion between the plurality of guide rails or driving electric power of the linear motor in the connecting portion between the plurality of guide rails, a transfer state of the slider between the guide rails, wherein
the controller is configured or programmed to perform a control to provide notification of the transfer state based on the transfer state of the slider between the guide rails;
the conveyor includes fixed first and second conveyors, and a third conveyor including a movement mechanism configured to move the guide rails and the linear motor, the third conveyor being configured to convey the slider from the first conveyor to the second conveyor; and
the controller is configured or programmed to acquire the transfer state of the slider between the guide rails based on the vibration or the driving electric power of the linear motor in at least one of a connecting portion between the guide rails from the first conveyor to the third conveyor or a connecting portion between the guide rails from the third conveyor to the second conveyor.