Loading patent…

Back to results

US 4,911,370 AGranted

Method and apparatus for winding yarn

AssigneeBarmag AG

InventorsHeinz Schippers, Walter Runkel, Erich Lenk, Klaus Bartkowiak

Life of this patent

Estimating the term…

Download PDF Find prior artPrior art Similar

Abstract Drawings Claims Description

Abstract

A method and apparatus for winding a textile yarn into a cross-wound package is disclosed, in which the yarn is wound about the package at a substantially constant rate while the yarn is guided onto the package by a traversing guide. In order to avoid the formation of ribbons on the package, the traversing frequency of the yarn guide is periodically varied by shortening the stroke of the traversing yarn guide while maintaining an unchanged traversing speed of the traversing yarn guide. The avoidance of the formation of ribbons is also accomplished by varying the traversing speed of the traversing yarn guide during the times in which the traversing frequency of the traversing yarn guide is unchanged. Stops are provided for controlling the length of back-and-forth movement of the traversing yarn guide and the stops can be moved inwardly and outwardly to provide the required stroke modification of the traversing guide. Several specific embodiments of the yarn traversing apparatus are disclosed, and wherein the traversing apparatus includes gripper means mounted on a slide which is positioned between parallel runs of a drive belt, and control means for moving the gripper means to alternately engage the two runs of the belt and thus reciprocate the slide.

Claims30

Dependent claims

Claim 1A method of breaking the formation of ribbons while winding a textile yarn into a cross-wound package and · 119 words1 dependent Claim 3A method of winding textile yarn onto core supported packages · 142 words4 dependent Claim 8A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package · 206 words1 dependent Claim 10A yarn winding apparatus · 216 words1 dependent Claim 12A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package · 530 words3 dependent Claim 16A yarn winding apparatus comprising a plurality of side by side winding stations for winding a yarn at each of the stations · 441 words1 dependent Claim 18A yarn winding apparatus · 217 words2 dependent Claim 21A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package · 474 words1 dependent Claim 23A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package · 594 words1 dependent Claim 25A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package · 498 wordsNo dependents Claim 26A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package · 456 words2 dependent Claim 29A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package · 374 words1 dependent

A method of breaking the formation of ribbons while winding a textile yarn into a cross-wound package and comprising the steps of rotating the package, while traversing a yarn guide across the rotating package and such that the yarn is wound about the package at a substantially constant rate which is substantially equal to the geometrical sum of the peripheral speed of the package and the traverse speed, and wherein the traverse speed is at least about 3.5% of the peripheral speed of the package, and including the stop of periodically or aperiodically varying the traversing frequency by shortening and lengthening the stroke of the traversing yarn guide while maintaining a constant traversing speed of the traversing yarn guide.

A method of winding textile yarn onto core supported packages comprising the steps of rotating the package, while traversing a yarn guide across the rotating package such that the yarn is wound about the package at a substantially constant rate, and wherein said constant rate is substantially equal to the geometrical sum of the peripheral speed of the package and the traverse speed, and including the stpes of rotating the core supported package at a substantially constant peripheral speed, while controlling the traverse of the yarn guide in a recurrent series of stroke modification cycles in which the length of the strokes of the yarn guide is progressively decreased and then progressively increased, and while maintaining a constant traversing speed of the traversing yarn guide during each stroke modification cycle which is at least 3.5% of the peripheral speed of the package.

A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package, and comprising

a slide fixedly mounting a yarn guide,
means mounting said slide for back and forth movement along a linear stroke path,
drive means for moving said slide back and forth along said stroke path at a uniform speed in each direction which is at least about 3.5% of the speed of the running yarn, said drive means including stop means positioned adjacent each of the ends of said stroke path so as to be engaged by the slide upon reaching the associated end of the stroke for effecting reversal of the movement,
control means for adjustably moving at least one of said stop means for inward and outward movement relative to each other to thereby permit adjustment of the stroke length, and whereby the length of the stroke of the slide may be changed while the traversing speed is unchanged, and
said drive means including means for rendering said control means inoperative so as to define periods of rest wherein the stroke of the traversing yarn guide is substantially unchanged, and for varying the traverse speed of the slide during said periods of rest.

2 more elements

A yarn winding apparatus comprising a plurality of side by side yarn winding stations, with each winding station comprising

a spindle adapted for coaxially receiving a core for receiving the yarn to form a core supported package,
means for rotatably driving the package being formed at a constant peripheral speed,
a slide fixedly mounting a traversing guide,
conveyor belt means having parallel opposing runs,
means for driving said conveyor belt means at a constant linear speed which is at least about 3.5% of the peripheral speed of the package, and with said runs moving in opposite directions,
means mounting said slide for movement back and forth along a straight line stroke path between said opposing runs of said conveyor belt means,
stop means in the areas of the ends of said stroke path for drivingly connecting said slide to said opposing runs of said conveyor belt in an alternating manner, and
means for supporting at least one of said stop means for inward and outward movement relative to the other stop means to provide modification of the stroke of said traversing guide,
said apparatus having a single endless conveyor belt extending along the length of said apparatus, with said endless belt having parallel runs which define said conveyor belt means at each of said winding stations.

6 more elements

A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package, and comprising

a pair of laterally separated and parallel belt segments,
means for driving said belt segments in opposite directions,
a slide fixedly mounting a yarn guide,
means mounting said slide for back and forth movement along a straight line stroke path between and parallel to said belt segments,
gripper means mounted on said slide for movement between a first position engaging one of said belt segments and a second position engaging the other of said belt segments, said gripper means comprising first and second pairs of clamps for engaging respective ones of said belt segments, with each pair of clamps comprising a first member fixed to said slide and a second member movably mounted on said slide for movement toward said first member and so as to engage the associated belt segment therebetween, and
control means for moving said gripper means from said first position to said second position at one end of said stroke path and returning said gripper means from said second position to said first position at the other end of said stroke path, and so that said slide and yarn guide are reciprocated along said stroke path, said control means comprising
(a) a pair to stops mounted adjacent respective ends of said stroke path,
(b) cam means mounted on said slide for movement between a first location and a second location and so as to be engaged by said stop at each end of said stroke path to thereby be alternately shifted between said first and second locations, said cam means comprising first and second curved spring blades mounting respective ones of said movable second members, an indexing cam pivotally mounted to said slide between said spring blades and so as to define said first and second locations, and an arm pivotally mounted to said slide and being operatively connected to said indexing cam, with said arm being configured to engage said stops at the ends of the stroke path and so that said arm is pivoted in alternate directions and said indexing cam is moved between said first and second locations and engages alternate ones of said spring blades in said first and second locations to thereby straighten the engaged blades and thereby move the associated movable second member toward the associated fixed first member,
(c) means operatively interconnecting said cam means and said gripper means such that said gripper means is moved to said first position upon said cam means being moved to said first location, and such that said gripper means is moved to said second position upon said cam means being moved to said second location, and
(d) spring biasing means fixed to said slide and said cam means for biasing said cam means toward said first location when said cam means is in said first location, and for biasing said cam means toward said second location when said cam means is in said second location, and with said spring biasing means having a dead center position of maximum force when said cam means is intermediate said first and second locations.

7 more elements

A yarn winding apparatus comprising

a plurality of side by side winding stations for winding a yarn at each of the stations,
a corresponding number of spindles coaxially aligned to each other and associated to each of the winding stations for coaxially receiving a core for receiving the yarn to form a core supported package,
means for rotatably driving each of the packages being formed at a constant peripheral speed,
conveyor belt means having parallel opposing segments, said segments being parallel to and extending over the length of said number of spindles,
means for driving said conveyor belt means at a constant linear speed which is at least about 3.5% of the peripheral speed of the package, and with said segements moving in opposite directions, and wherein each of the yarn winding stations further comprises
a slide mounting a yarn traversing guide,
means mounting said slide for back and forth movement along a straight line stroke path between and parallel to said belt segments,
gripper means mounted on said slide for movement between a first position engaging one of said belt segments and a second position engaging the other of said belt segments, and
control means for moving said gripper means from said first position to said second position at one end of said stroke path and returning said gripper means from said second position to said first position at the other end of said stroke path, and so that said slide and yarn guide are reciprocated along said stroke path, said control means comprising
(a) a pair of stops mounted adjacent respective ends of said stroke path,
(b) cam means mounted on said slide for movement between a first location and a second location and so as to be engaged by said stop at each end of said stroke path to thereby be alternately shifted between said first and second locations,
(c) means operatively interconnecting said cam means and said gripper means such that said gripper means is moved to said first position upon said cam means being moved to said first location, and such that said gripper means is moved to said second position upon said cam means being moved to said second location, and
(d) spring biasing means fixed to said slide and said cam means for biasing said cam means toward said first location when said cam means is in said first location, and for biasing said cam means toward said second location when said cam means is in said second location, and with said spring biasing means having a dead center position of maximum force when said cam means is intermediate said first and second locations.

10 more elements

A yarn winding apparatus comprising a plurality of side by side yarn winding stations, with each winding station comprising,

a spindle adapted for coaxially receiving a core for receiving the yarn to form a core supported package,
means for rotatably driving the package being formed at a constant peripheral speed,
a slide fixedly mounting a traversing guide,
conveyor belt means having parallel opposing runs,
means for driving said conveyor belt means at a constant linear speed which is at least about 3.5% of the peripheral speed of the package, and with said runs moving in opposite directions,
means mounting said slide for movement back and forth along a straight line stroke path between said opposing runs of said conveyor belt means,
stop means in the areas of the ends of said stroke path for drivingly connecting said slide to said opposing runs of said conveyor belt in an alternating manner, and
means for supporting at least one of said stop means for inward and outward movement relative to the other stop means to provide modification of the stroke of said traversing guide,
said apparatus having a pair of endless belts extending along the length of said apparatus, with said endless belts having opposing parallel runs which define said conveyor belt means at each of said winding stations.

6 more elements

A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package, and comprising

a pair of laterally separated and parallel belt segements,
means for driving said belt segments in opposite directions,
a slide fixedly mounting a yarn guide,
means mounting said slide for back and forth movement along a straight line stroke path between and parallel to said belt segments,
gripper means mounted on said slide for movement between a first position engaging one of said belt segments and a second position engaging the other of said belt segments, said gripper means comprising first and second pairs of clamps for engaging respective ones of said belt segments, with each pair of clamps comprising a first member fixed to said slide and a second member movably mounted on said slide for movement toward said first member and so as to engage the associated belt segment therebetween,
a support member slideably mounted on said slide for movement in the lateral direction, and with said support member having laterally opposite edges which define said movable second members of said gripper means, and
control means for moving said gripper means from said first position to said second position at one end of said stroke path and returning said gripper means from said second position to said first position at the other end of said stroke path, and so that said slide and yarn guide are reciprocated along said stroke path, said control means comprising
(a) a pair of stops mounted adjacent respective ends of said stroke path,
(b) cam means mounted on said slide for movement between a first location and a second location and so as to be engaged by said stop at each end of said stroke path to thereby be alternately shifted between said first and second locations, said cam means comprising a guide mounted on said support member intermediate said second movable members, and wherein each of said stops comprises an arcuate surface adapted for engaging said guide to laterally translate the guide and support member,
(c) means operatively interconnecting said cam means and said gripper means such that said gripper means is moved to said first position upon said cam means being moved to said first location, and such that said gripper means is moved to said second position upon said cam means being moved to said second location, and
(d) spring biasing means fixed to said slide and said cam means for biasing said cam means toward said first location when said cam means is in said first location, and for biasing said cam means toward said second location when said cam means is in said second location, and with said spring biasing means having a dead center position of maximum force when said cam means is intermediate said first and second locations.

8 more elements

A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package, and comprising

a pair of laterally separated and parallel belt segments which define a longitudinal center line therebetween,
means for driving said belt segments in opposite directions,
a slide fixedly mounting a yarn guide,
means mounting said slide for back and forth movement along a straight line stroke path between and parallel to said belt segments,
gripper means mounted on said slide for movement between a first position engaging one of said belt segments and a second position engaging the other of said belt segments, said gripper means comprising first and second pairs of clamps for engaging respective ones of said belt segments, with each pair of clamps comprising a first member fixed to said slide and a second member movably mounted on said slide for movement toward said first member and so as to engage the associated belt segment therebetween,
a support member slideably mounted on said slide for movement in the lateral direction, and with said support member having laterally opposite edges which define said movable second members of said gripper means, and
control means for moving said gripper means from said first position to said second position at one end of said stroke path and returning said gripper means from said second position to said first position at the other end of said stroke path, and so that said slide and yarn guide are reciprocated along said stroke path, said control means comprising
(a) a pair of stops mounted adjacent respective ends of said stroke path,
(b) cam means mounted on said slide for movement between a first location and a second location and so as to be engaged by said stop at each end of said stroke path to thereby be alternately shifted between said first and second locations, said cam means comprising a guide mounted on said support member intermediate said second movable members,
(c) means operatively interconnecting said cam means and said gripper means such that said gripper means is moved to said first position upon said cam means being moved to said first location, and such that said gripper means is moved to said second position upon said cam means being moved to said second location, and
(d) spring biasing means fixed to said slide and said cam means for biasing said cam means toward said first location when said cam means is in said first location, and for biasing said cam means toward said second location when said cam means is in said second location, and with said spring biasing means having a dead center position of maximum force when said cam means is intermediate said first and second locations, and
a traverse disengaging means which comprises a pair of shifting rails extending along respective halves of the stroke path and on opposite sides of said center line, a pair of stopping rails extending along respective halves of the stroke path and on opposite sides of said center line, and with said stopping rails being opposed to respective ones of said shifting rails, and means for selectively moving said shifting and stopping rails laterally toward and away from each other and so as to be movable between an idle position wherein said guide is not engaged by said rails and is free to move therebetween, and an engaged position wherein said guide and thus also support member are supported at a central location wherein neither one of said belt segments is engaged by said gripper means.

9 more elements

A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package, and comprising

a pair of laterally separated and parallel belt segments,
means for driving said belt segments in opposite directions,
a slide fixedly mounting a yarn guide,
means mounting said slide for back and forth movement along a straight line stroke path between and parallel to said belt segments,
gripper mean mounted on said slide for movement between a first position engaging one of said belt segments and second position engaging the other of said belt segments, said gripper means comprising first and second pairs of claims for engaging respective ones of said belt segments, with each pair of clamps comprising a first member fixed to said slide and a second member movably mounted on said slide for movement toward said first member and so as to engage the associated belt segment therebetween,
a support member slideably mounted on said slide for movement in the lateral direction, and with said support member having laterally opposite edges which define said movable second members of said gripper means,
control means for moving said gripper means from said first position to said second position at one end of said stroke path and returning said gripper means from said second position to said first position at the other end of said stroke path, and so that said slide and yarn guide are reciprocated along said stroke path, said control means comprising
(a) a pair of stops mounted adjacent respective ends of said stroke path,
(b) cam means mounted on said slide for movement between a first location and a second location and so as to be engaged by said stop at each end of said stroke path to thereby be alternately shifted between said first and second locations, said cam means comprising a pair of laterally spaced apart guides mounted to said support member intermediate said second movable members, with each of said guides including a longitudinal flank which is parallel to said belt segments and a lateral flank, and wherein each of said stops comrpises pivotal rocking arm means for engaging a respective one of said guides and laterally translating the same,
(c) means operatively interconnecting said cam means and said gripper means such that said gripper means is moved to said first position upon said cam means being moved to said first location, and such that said gripper means is moved to said second position upon said cam means being moved to said second location, and
(d) spring biasing means fixed to said slide and said cam means for biasing said cam means toward said first location when said cam means is in said first location, and for biasing said cam means toward said second location when said cam means is in said second location, and with said spring biasing means having a dead center position of maximum force when said cam means is intermediate said first and second locations.

8 more elements

A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package, and comprising

a pair of laterally separated and parallel belt segments,
means for driving said belt segments in opposite directions,
a slide fixedly mounting a yarn guide,
means mounting said slide for back and forth movement along a straight line stroke path between and parallel to said belt segments,
gripper means mounted on said slide for movement between a first position engaging one of said belt segments and a second position engaging the other of said belt segments, said gripper means comprising first and second pairs of clamps for engaging respective ones of said belt segments, with each pair of clamps comprising a first member fixed to said slide and a second member movably mounted on said slide for movement toward said first member and so as to engage the associated belt segment therebetween,
a plate-like support member overlying said slide, and means mounting said support member to said slide for movement in opposite directions along a path which is inclined from the lateral direction extending between said belt segments, and with said support member having laterally opposite edges which define said movable second members of said gripper means,
control means for moving said gripper means from said first position to said second position at one end of said stroke path and returning said gripper means from said second position to said first position at the other end of said stroke path, and so that said slide and yarn guide are reciprocated along said stroke path, said control means comprising
(a) a pair of stops mounted adjacent respective ends of said stroke path,
(b) cam means mounted on said slide for movement between a first location and a second location and so as to be engaged by said stop at each end of said stroke path to thereby be alternately shifted between said first and second locations,
(c) means operatively interconnecting said cam means and said gripper means such that said gripper means is moved to said first position upon said cam means being moved to said first location, and such that said gripper means is moved to said second position upon said cam means being moved to said second location, and
(d) spring biasing means fixed to said slide and said cam means for biasing said cam means toward said first location when said cam means is in said first location, and for biasing said cam means toward said second location when said cam means is in said second location, and with said spring biasing means having a dead center position of maximum force when said cam means is intermediate said first and second locations.

8 more elements

A yarn traversing apparatus adapted for guiding a running yarn onto a rotating core to form a core supported package, and comprising

a pair of laterally separated and parallel belt segments,
means for driving said belt segments in opposite directions,
a slide fixedly mounting a yarn guide,
means mounting said slide for back and forth movement along a straight line stroke path between and parallel to said belt segments,
gripper means mounted on said slide for movement between a first position engaging one of said belt segments and a second position engaging the other of said belt segments, and
control means for moving said gripper means from said first position to said second position at one end of said stroke path and returning said griper means from said second position to said first position at the other end of said stroke path, and so that said slide and yarn guide are reciprocated along said stroke path, said control means comprising
(a) a pair of stops mounted adjacent respective ends of said stroke path,
(b) cam means mounted on said slide for movement between a first location and a second location and so as to be engaged by said stop at each end of said stroke path to thereby be alternately shifted between said first and second locations,
(c) means operatively interconnecting said cam means and said gripper means such that said gripper means is moved to said first position upon said cam means being moved to said first location, and such that said gripper means is moved to said second position upon said cam means being moved to said second location, and
(d) spring biasing means fixed to said slide and said cam means for biasing said cam means toward said first location when said cam means is in said first location, and for biasing said cam means toward said second location when said cam means is in said second location, and with said spring biasing means having a dead center position of maximum force when said cam means is intermediate said first and second locations, and
means for accelerating said slide toward each of the ends of the stroke path to assure that said spring biasing means passes through its dead center position.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 07/130,062Filed 8 Dec 1987
Priority: DE 36418478 Dec 1986
Granted: 27 Mar 1990
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

B65H 54/2821
Traversing devices; Package-shaping arrangements: traversing devices driven by belts or chains
B65H 54/38
Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers: arrangements for preventing ribbon winding ;…
B65H 54/386
Preventing edge raising, e.g. creeping arrangements: with energy storing means for recovering the kinetic energy at the end of the traversing stroke
B65H 2701/31
Handled filamentary material: textiles threads or artificial strands of filaments

Family

No related US applications are recorded in the indexed filing history.

Timeline

Citations

Open elsewhere

USPTO full text and PDF
Patent Center file history
USPTO assignment records
Espacenet
Google Patents