Speed control for weft feed spool in weaving looms
AssigneePicanol N.V.
InventorsPhilippe Van Bogaert, Filip Deconinck
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Abstract
A method to control the speed of the weft feed spool in weaving looms includes feeding at least two items of detected data related to weft delivery and supply, and loom operation, into a control mechanism, and using the data to calculate as a number of windings, the variation of the weft length reserve from the average minimum desired weft length reserve as determined by an average weft length reserve sensor and adjusting the speed of the feed spool in response to such calculations. A maximum weft length detector may be used as a control for the feed spool as well as a sensor for the time and number of unwindings of weft from the feed spool.
Claims8
A method for controlling the speed of a weft feed spool in a weaving loom comprising:
- detecting at least two items of data related to weft delivery and supply, and loom operation;
- detecting by a weft reserve sensor the average minimum desired length of weft reserve on the spool;
- calculating from the detected data the variation from the average minimum desired reserve in terms of number of windings on the spool;
- calculating, as a function of the calculated variance in the number of windings from the average minimum reserve, any adjustment needed to the speed of the weft feed spool;
- controlling the weft feed spool speed as a function of said calculated adjustment.
Dependencies are inferred from the claim text.