Doubler winder
AssigneeMurata Kikai Kabushiki Kaisha
InventorsToshio Yamauchi, Hiroshi Uchida
Life of this patent
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Abstract
In a winder provided with a control device capable of independently controlling rotational speeds of both motors for a friction roller having a winding package placed thereon and a traverse mechanism, a driving method for a winder comprising: obtaining a difference between an output of a first sensor for detecting a rotational speed of a package and an output of a second sensor for detecting a rotational speed of a friction roller, attenuating the difference to an adjustable value to prepare a correction value, subtracting the correction value from the output of the second sensor, and using the result obtained therefrom as a control input of the both motors to enable selection of a plurality of winding patterns.
Claims4
A driving control device for a winder having a motor for driving a package and a motor for driving a traverse mechanism, comprising:
- a friction roller for driving a package;
- a first motor for driving the friction roller;
- a second motor for driving a traverse cam of a traverse mechanism;
- a first rotational sensor provided on a package support mechanism to know rotation of the package;
- a second rotational sensor provided on an output shaft of the first motor to know a rotational speed of the friction roller;
- a first and a second inverters for controlling the speeds of the motors;
- a motor control portion for giving a speed command to these inverters;
- and
- a speed setting portion for setting a yarn speed, setting of winding mode and setting of initial value of an winding angle.
In a winder having a rotatable friction roller for contacting a package and a traverse mechanism, the package defining a winding speed and a diameter, a method comprising:
- providing a first motor for rotating the friction roller, the first motor defining a speed,
- providing a second motor for running the traverse mechanism, the second motor defining a speed,
- providing a control device for independently controlling the speed of the first motor and the second motor,
- monitoring the winding speed of the package,
- controlling the speed of the second motor in response to the winding speed of the package,
- monitoring the diameter of the package,
- using the diameter of the package to calculate a first value,
- using the winding speed of the package to calculate a reference value,
- determining the sum of the first value and the reference value, and
- using the sum of the first value and the reference value to control the speed of the second motor,
- whereby a plurality of winding patterns are obtained.
Dependencies are inferred from the claim text.