To drive and stop a driving device and to confirm the operation of the device by providing a separate driving device for each weight, and providing a drive and stop select switch and an operation display lamp for each separate driving device.
A driver 44 is so constructed that a separate driving motor 19 of a nip twister and a separate driving motor 45 of a feed roller 12 are controlled to rotate at variable speed. Drive and stop select switches 35, 37 for driving and stopping the separate driving motors 19, 45 are connected to the driver 44 thorugh a signal line 46, and the select switches 35, 37 are provided with operation display lamps 36, 37 such as LED or the like, which are adapted to light when the select switches 35, 37 turn off, light out when they turns off, and flicker in case of abnormality, and connected to the driver 44. During the operation of the separate motors 19, 45, the operation display lamps 36, 38 provided on the select switches 35, 37 are put out, and during stoppage, the operation display lamps 36, 38 are lighted to confirm whether the weight is in the course of operation or not at a glance.
NISHIYAMA TOSHIKAZU
TAWARA RYOSUKE
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