Twist number setting device for a two-for-one twister
AssigneeMurata Kikai Kabushiki Kaisha
InventorsIsamu Matsui, Yutaka Ueda
Life of this patent
Estimating the term…
Abstract
A twist number setting device for a two-for-one twister constituted such that an output power shaft of a drive motor is connected to a drive pulley which is connected to a spindle and provides a turning force to the spindle and also connected to a rotary shaft of a drum which contacts with a winding package and provides a turning force to the package, and a speed change means is interposed between the output power shaft of the drive motor and the rotary shaft of the drum.
Claims13
A twist number setting device for a two-for-one twister which is operable with a winding package, the device comprising:
- a drive motor having an output power shaft;
- a drive pulley to which the output power shaft is operatively connected;
- a spindle;
- an endless belt contacting with the drive pulley and the spindle;
- a drum having a rotary shaft to which the output power shaft is also operatively connected, the drum being in contact with the winding package and provides a turning force to the package;
- a speed change means interposed between the output power shaft of the drive motor and the rotary shaft of the drum;
- wherein the speed change means comprises an input side pulley, an output side pulley and a belt extending between the input side pulley and the output side pulley, the input side pulley having an outer washer and an inner washer for engaging the belt;
- wherein each of the washers has a tapered inner side and the outer washer is movable relative to the inner washer to vary the distance between the washers so that the position at which the belt engages the washers is variable and depends upon the distance between the washers and the speed of rotation of the output from the output power shaft of the output side pulley is variable;
- wherein said speed change means further includes a control motor having an output port shaft, and a holder secured to the outer washer and connected with the output port shaft, and wherein said outer washer being movable toward the inner washer by an operation of the control motor.
An apparatus for twisting yarn onto a winding package comprising:
- a drive motor having an output shaft operable to rotate at a first speed;
- a rotatable spindle operable to rotate at a second speed;
- drive means associated with the output shaft for driving the rotatable spindle;
- a rotatable drum operable to rotate at a third speed;
- speed change means for driving the rotatable drum from the output shaft, the speed change means including;
- a first pulley operable to rotate at a fourth speed;
- a second pulley operable to rotate at a fifth speed, the fourth and fifth speeds of rotation defining a speed ratio;
- a belt extending between the first pulley and the second pulley;
- an inner washer and an outer washer on one of the pulleys, each of the washers having a tapered inner side and the belt engaging the inner side of each washer at a position;
- one of the washers being movable relative to the other washer, so that the position at which the belt engages the washers is variable and the speed ratio is variable;
- and
- a control motor to move one of the washers relative to the other washer.
Dependencies are inferred from the claim text.