Method and apparatus for automatic running control of a loom
AssigneeTsudakoma Kogyo Kabushiki Kaisha
InventorsKatsuhiko Sugita, Toshiyuki Sakano
Life of this patent
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Abstract
A voltage to be applied to the primary winding of a drive motor is automatically and time-functionally adjusted in relation to the rated voltage of the drive motor in order to provide sufficiently large torque for beating during the starting period of the loom running and transit to normal running of the loom is carried out at a preselected moment other than the moment of beating motion. Change in voltage is effected through either switching in mode of connection for the primary winding or transforming the power source voltage which is maintained constant.
Claims12
Method for running control of a loom having a crank shaft comprising the steps of
- subjecting the primary winding of a drive motor for said loom to the application of an initial voltage higher than its rated voltage during the starting period of loom running, and
- changing said initial voltage to said rated voltage after said starting period at a moment other than the moment of beating on the cloth-fell,
- the electric power source voltage for said drive motor being unchanged.
Apparatus for automatic running control of a loom having a crank shaft comprising
- an electric power source supplying constant power source voltage,
- a drive motor of a certain rated voltage for said loom including a primary winding,
- means interposed between said electric power source and said drive motor for changing the level of a voltage to be applied to said primary winding of said drive motor, and
- means for controlling the operation of said voltage level changing means so that said primary winding of said drive motor should be subjected to application of an initial voltage higher than said rated voltage during the starting period of loom running and said initial voltage should be changed to said rated voltage after said starting period at a moment other than the moment of beating on the cloth-fell.
Dependencies are inferred from the claim text.