Device for joining textile yarns and corresponding joining method
AssigneeHayabusa S.R.L.
InventorsLuciano Bertoli, Gianni Mottola
Life of this patent
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Abstract
A device for joining textile yarns for joining two ends of two textile yarns by decomposition and subsequent re-composition of the twists of the fibers of the ends in order to make up a single yarn, including two counter-rotating components, each provided with at least one joining element and disposed opposite each other defining a joining zone defined by the area between the respective joining elements facing each other and substantially aligned along a work axis.
Claims13
A joining device for joining opposite ends of two textile yarns by decomposition and subsequent re-composition of twists of fibers of the opposite ends in order to make a single yarn, the joining device comprising two counter-rotating components, each counter-rotating component of the two counter-rotating components being provided with at least one joining element and disposed opposite each other defining a joining zone between the joining elements facing each other and substantially aligned along a work axis, wherein the joining device comprises:
- one or more motor members configured at least to selectively move at least one counter-rotating component of the two counter-rotating components along the work axis so as to adjust a width and size of the joining zone and to selectively rotate the two counter-rotating components with respect to each other about the work axis to obtain the decomposition and the subsequent re-composition of the twists of the fibers of the yarns;
- a control unit having an internal memory provided with a list of functioning parameters of the two counter-rotating components for joining the yarns, the control unit being configured to control and command the one or more motor members based on the functioning parameters present in the internal memory,
- wherein one counter-rotating component of the two counter-rotating components provides grips configured to selectively protrude from the joining element and bring the two ends of the yarns to be joined close to each other, and in that the other counter-rotating component of the two counter-rotating components comprises a plurality of holes provided along a diameter of the joining element and configured to cooperate with the grips introducing air into or sucking air out of the joining zone in order to bring close together and compact two ends to be joined.
A method for joining opposite ends of two textile yarns by decomposition and subsequently re-composition of twists of fibers of ends in order to make a single yarn, the method comprising:
- introducing two yarns to be joined between two components, each of the two components provided with at least one joining element and disposed opposite each other defining a joining zone between the joining elements facing each other aligned along a work axis;
- bringing the two components close to each other along the work axis until there is at least partial contact between the joining elements;
- rotating the two components in opposite directions to each other so as to bring the two yarns close and parallel to each other in the joining zone;
- removing the end parts of the yarns which will not contribute to the joining, obtaining the two ends of the two yarns to be joined;
- bringing the ends of the two yarns to be joined close together until they substantially overlap;
- counter-rotating the two components in opposite directions to each other so as to twist the opposite ends of the two yarns in order to create a single yarn;
- wherein the method further comprises making available in an internal memory of a control unit a list of functioning parameters of the two components for joining textile yarns, wherein the control unit, as a function of the functioning parameters, commands and controls one or more motor members assigned to executing one or more steps of introducing the textile yarns into the joining zone, bringing the two components close together, rotating the two components, removing the end parts of the yarns, bringing the ends of the yarns obtained close together and counter-rotating the two components,
- wherein one of the two components provides grips configured to selectively protrude from the joining element and bring the ends of the two yarns to be joined close to each other, and in that the other of the two components comprises a plurality of holes provided along a diameter of the joining element and configured to cooperate with the grips introducing air into or sucking air out of the joining zone in order to bring close together and compact two ends to be joined.
Dependencies are inferred from the claim text.