Officine Savio S.p.a.

Claudio Speranzin

Roberto Badiali

Luciano Bertoli

This invention relates to a procedure for splicing yarns, whether textile or otherwise, with a joint made by coupling two single untwisted yarns and thereafter retwisting them, wherein the single yarns are untwisted beyond a substantially nil twist value and are then coupled and retwisted so as to impart to the single yarns a desired twist at least the same as the twist comprised in the original yarn, the untwisting phase being carried on beyond the nil value until a negative twist value has been imparted which is equal to at least 15-20% of the initial twist value comprised in the single yarn, and the value of the negative twist being at least in proportion to the desired reciprocal thrust induced between the yarns at least in the transitory phase when the fibers are parallel to the axis of the single coupled yarns during retwisting. The invention also relates to a splice made by the above procedure.

Yarn splice

This invention relates to a procedure for splicing yarns, whether textile or otherwise, with a join made by coupling two single untwisted yarns and thereafter retwisting them, wherein the single yarns are untwisted beyond a substantially nil twist value and are then coupled and retwisted so as to impart to the single yarns a desired twist at least the same as the twist comprised in the original yarn, the untwisting phase being carried on beyond the nil value until a negative twist value has been imparted which is equal to at least 15-20% of the initial twist value comprised in the single yarn, and the value of the negative twist being at least in proportion to the desired reciprocal thrust induced between the yarns at least in the transitory phase when the fibers are parallel to the axis of the single coupled yarns during retwisting. The invention also relates to a splice made by the above procedure.

Procedure for splicing yarns

A splicer device for making a splice between two yarns by the mechanical removal and recomposition of twists having rings to untwist and retwist yarn, grippers to pluck and/or tear excessive yarn tail ends and form small retaining yarn tails, and any of an adjustable cam to separately condition untwisting and retwisting, a spacer to keep the surfaces working on the yarn at least for a moment a distance apart, movable portions on the grippers that move in opposite directions, and a tensioner to permit drawing action.

Splicer device for the mechanical splicing of textile yarns

Improvements to procedures for the splicing of yarns (20-21), whether textile or not, the splice being obtained by coupling two single untwisted yarns (20-21) and re-imparting the twists thereafter, in which improvements a part of the single yarns is untwisted until twists of a sign opposite to the original sign have been imparted, and such part is then coupled and small tails (220-221) are obtained, and the coupled segment is then retwisted by imparting a desired twist, such small tails (220-221) being obtained after a substantial parallelization of the fibres to be plucked and/or torn (42) and after a successive plucking and/or tearing action (40) along the axis of the yarns, the tapering (320-321) of such tails (220-221) reaching the neighborhood of the periphery of the retwisting rings (28), the resulting tails (220-221) being controlled and positioned alongside the yarns (21-20) before the beginning of such action to impart such desired retwisting, at least part of the segment of yarn being untwisted undergoing a drawing action at least during the untwisting step and at least at about the transient stage of conversion from one type of twist to the other (from 'Z' to 'S' or from 'S' to 'Z').

Procedure for the mechanical splicing of textile yarns

A procedure for splicing textile yarns mechanically whereby two yarns which are initially placed crosswise, awry or parallel to each other are first untwisted and then retwisted together by two rings, the rings being placed face to face and opposite to each other and act on yarns positioned between the rings, and whereby the excessive tail ends are eliminated and the yarns are untwisted up to a desired value in positions of mutual non-interference and are then brought together until they are substantially pressed against each other and are clamped at a position lying at about the beginning of the desired taper of each remaining tail end in cooperation with the rings so as to determine the length of the remaining tail ends and to effect a plucking/tearing action on the tails to be discharged, thereby obtaining progressive remaining tail ends before the retwisting action, and whereby the remaining tail ends are doubled and retwisted at least by the rings, which control the tail ends in at least two points located at least at about the ends of the splice. A splicer device for splicing textile yarns mechanically having two rings facing each other, whereby at least one ring is movable in relation to the other and two yarns to be spliced are positionable between the rings, and whereby the yarns undergo a controlled untwisting action and a controlled retwisting action and also an intermediate action of removal and discharge of their excessive tail studs to bring the yarns together, an intermediate clamp cooperating with a plucking and tearing element, a retwisting element, and a drive cam.

Process and apparatus for mechanically splicing yarns

This invention concerns an improved splicer (10) to splice textile yarns mechanically, the splice being obtained by coupling two single untwisted yarns (70-71) and reapplying the twists thereafter, part of such single yarns (70-71) being untwisted until twists of a sign opposite to the original twists have been imparted, such part then being doubled and remaining tails (270-271) being obtained, the doubled tract being then retwisted by imparting a required value of twist.

Splicer device to splice textile yarns mechanically

This invention concerns improvements to procedures to splice yarns (20-21), whether textile yarns or otherwise, the splice being obtained by coupling two single untwisted yarns (20-21) and by reconstituting the twists thereafter, by which improvements a part of the single yarns (20-21) is untwisted until twists of a sign opposite to the sign of the original twists have been imparted, such part then being coupled and reduced tails (220-221) of yarns being obtained, the coupled tract then being retwisted until a required twist has been imparted, the improvements envisaging that the reduced tails (220-221) are obtained after the fibers to be plucked and/or torn (42) have been made substantially parallel and after a substantially axial plucking and/or tearing action has been applied to such fibers (42), and that the taper (320-321) of the remaining reduced tails (220-221) reaches the neighborhood of the periphery of retwister rings (28), the resulting remaining tails (220-221) being controlled and positioned beside the yarns (20-21) before the action to impart the required retwisting is begun.

Procedure to splice yarns

A device for disrupting a ballooning yarn which is suitable for coupling to cops being unwound in a winding machine and which comprises a cylindrical section positionable at the side of the cop being unwound and extending at least the whole height of the cop and a loop or thread guide supported by the cylindrical section above the cop. The circular sector is between one and one half and four times the diameter of the cop.

Device to disrupt the balloon of yarn

A device for distributing softening liquid to a yarn, when the yarn is being balloon twisted and has emerged from the spindle or core of the spindle including a container for the balloon, at least one chamber integrally fixed to an external portion of the container wherein the balloon slides, at least one feeding means for supplying liquid to said chamber and at least one porous seepage septum, which is present as an inner sliding surface for the balloon. The chamber is fed with liquid under adjustable pressure.

Device for distributing softening liquid on the yarn during the twisting

A device for distributing softening liquid to a yarn during the process of balloon twisting the yarn after the yarn has emerged from the spindle or from the core of the spindle including a container, at least one feeder means for feeding liquid, at least one chamber integrally fixed to an external portion of said container and a coordinated set of seepage holes present in the surface of said container communicating the inner surface of said container with said chamber wherein said chamber is supplied with liquid under adustable pressure.

Growing community of inventors

Pordenone, Italy

Claudio Speranzin