Covering machine
OwnerMaurizio Molteniinventor
Life of this patent
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Abstract
A machine for making covered elastic yarns, including a plurality of covering units, where each of the covering units has a spool for feeding an elastic yarn, a system for feeding a non-elastic yarn, a member for tensioning the covered elastic yarn and a bobbin for collecting the covered elastic yarn, where the system for feeding the non-elastic yarn has a microspindle which rotates about an axis and at least one bobbin for feeding the non-elastic yarn separated by and arranged upstream of the microspindle along the sliding path of the non-elastic yarn and arranged outside the rotation axis of the microspindle, the microspindle including a channel which is coaxial to the rotation axis for the passage of the elastic yarn.
Claims9
A machine for making covered elastic yarns, comprising a plurality of covering units,
- wherein each of the covering units comprises a feeding spool of an elastic yarn, a feeding system of a non-elastic yarn, a tensioning member of a covered elastic yarn and a collecting bobbin of the covered elastic yarn,
- wherein the feeding system of the non-elastic yarn comprises a microspindle which is rotatable about a rotation axis and at least one feeding bobbin of the non-elastic yarn separated by and arranged upstream of the microspindle along a sliding path of the non-elastic yarn and arranged external to the rotation axis of the microspindle, said microspindle comprising a channel which is coaxial to the rotation axis for the passage of the elastic yarn,
- wherein the microspindle comprises a lower portion and an upper portion, a yarn guide feeding ring being arranged closer to the lower portion than to the upper portion, the yarn guide being configured so that the non-elastic yarn which is unwound by the feeding bobbin is kept close enough to a rotating surface of the microspindle, at a base thereof, to wind about the microspindle, and
- wherein the at least one feeding bobbin, comprises four feeding bobbins of respective non-elastic yarns, wherein the feeding bobbins are arranged at vertexes of a polygon.
A machine for making covered elastic yarns, comprising a plurality of covering units,
- wherein each of the covering units comprises a feeding spool of an elastic yarn, a feeding system of a non-elastic yarn, a tensioning member of a covered elastic yarn and a collecting bobbin of the covered elastic yarn,
- wherein the feeding system of the non-elastic yarn comprises a microspindle which is rotatable about a rotation axis and at least one feeding bobbin of the non-elastic yarn separated by and arranged upstream of the microspindle along a sliding path of the non-elastic yarn and arranged external to the rotation axis of the microspindle, said microspindle comprising a channel which is coaxial to the rotation axis for the passage of the elastic yarn,
- wherein the microspindle comprises a lower portion and an upper portion, a yarn guide feeding ring being arranged closer to the lower portion than to the upper portion, the yarn guide being configured so that the non-elastic yarn which is unwound by the feeding bobbin is kept close enough to a rotating surface of the microspindle, at a base thereof, to wind about the microspindle, and
- wherein the at least one feeding bobbin comprises two feeding bobbins of respective non-elastic yarns, wherein the feeding bobbins are arranged at vertexes of a segment in a middle of which the microspindle is arranged.
Dependencies are inferred from the claim text.