| 摘要 |
PROBLEM TO BE SOLVED: To simply adjust the spinning of a turntable of a sealing machine for a can only by its speed by using an inexpensive servo motor controllable by a signal from outside. SOLUTION: The servo motor is rotated at a set constant speed, and when the turntable reaches a speed reduction starting position, the servo motor is rotated at a constant reduction speed. Then, when the turntable reaches a stop preparing position, the servo motor is rotated at an extremely low constant speed, and furthermore, when the turntable reaches a stopping position, rotation of the servo motor is stopped through a sensor. On the other hand, a necessary time in a speed reducing region from starting a speed reduction to stopping is measured, and this measured time is compared with a standard time from starting speed reduction to ideal stopping, and when the measured time is larger than the standard time, a position where speed reduction is started is adjusted later, and when the measured time is smaller than the standard time and a stopping position exceeds a target position, the position where speed reduction is started is adjusted earlier. COPYRIGHT: (C)2005,JPO&NCIPI
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