System and method for inserting a weft thread
AssigneeSultex AG
InventorsWalter Siegl, Klaus Berktold
Life of this patent
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Abstract
A system for inserting a weft thread into a shed of an air jet weaving machine includes a thread store with a measuring apparatus, a plurality of air nozzles for the insertion of the weft thread and a control system which is connected to the measuring apparatus in order to be able to control the compressed air supply of the air nozzles in dependence on measurement values of the measuring apparatus. Switch-on points are associated with the air nozzles, with the control system charging one or more of the air nozzles with compressed air as soon as a predictor value for the position of the weft thread tip, which is formed with the help of the measurement values, reaches the switch-on point of the relevant air nozzle or air nozzles respectively.
Claims13
A method for the insertion of a weft thread into a shed of an air jet weaving machine, wherein the weft thread is drawn off from a thread store, the drawn off weft thread being measured with the help of a measuring apparatus, wherein the weft thread is inserted into the shed by means of a plurality of air nozzles and a control system controlling the compressed air supply of the air nozzles in dependence on measurement values of the measuring apparatus,
- wherein
- switch on points are associated with the air nozzles;
- wherein predictor values for the position of the weft thread tip are formed with the help of the measurement values;
- wherein a safety value or factor is contained in the predictor values for the position of the weft thread tip;
- and wherein the control system charges one or more of the air nozzles with compressed air as soon as a predictor value for the position of the weft thread tip, which is formed with the help of the measurement values, reaches the switch on point of the relevant air nozzle or air nozzles, respectively.
A system for inserting a weft thread into a shed of an air jet weaving machine, said system including a thread store, a measuring apparatus in order to be able to measure the weft thread which is drawn off from the thread store, a plurality of air nozzles for the insertion of the weft thread and a control system which is connected to the measuring apparatus in order to be able to control the compressed air supply of the air nozzles in dependence on measurement values of the measuring apparatus;
- wherein switch on points are associated with the air nozzles;
- wherein predictor values for the position of the weft thread tip are formed with the help of the measurement values;
- wherein a safety value or factor is contained in the predictor values for the position of the weft thread tip;
- and
- wherein the control system charges one or more of the air nozzles with compressed air as soon as a predictor value for the position of the weft thread tip, which is formed with the help of the measurement values, reaches the switch on point of the relevant air nozzle or air nozzles, respectively.
Dependencies are inferred from the claim text.