| 摘要 |
PURPOSE:To improve the cycle time of operation by providing an accelerating/ decelerating-time operating part for obtaining an accelerating time and a decelerating time by means of operation based on the established various factors of operation. CONSTITUTION:An accelerating time and a decelerating time are obtained by means of operation by an accelerating/decelerating-time operating part 20 based on the established various factors of operation, such as, the rated torque of an unwinding motor 4, the rated torque of wind-up drum motors 5c, 5d, the set value of tensile force or torque, the diameter of an unwinding roll 1, the diameter of a wind-up rolls 3, unwinding mechanical loss torque, and wind-up drum mechanical loss torque. Thereby, the setting items of accelerating time and decelerating time can be eliminated. Also, since the accelerating time and decelerating time obtained by the various factors of operation include the function of the diameter of the unwinding roll 1, the optimum accelerating time and decelerating time can be obtained, thereby, improving the cycle time of operation.
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