W. Schlafhorst Ag & Company

W. Schlafhorst & Co.

Dietmar Engelhardt

Hans Grecksch

Ulrich Wirtz

Ferdinand-Josef Hermanns

Helmut Kohlen

Paul Surkamp

Herbert Knors

Wilhelm Zitzen

Robert Hartel

Herbert Henze

Wolfram Weissenfels

Manfred Veyes

Herbert Merkens

Berndt Pommer

Helmuth Hensen

Gregor Ruth

Karl-Josef Hoehne

Hermann Ruetten

Dirk Jaegers

Heinz-Georg Wassenhoven

Josef Derichs

Paul Straaten

Rolf Haasen

Wolfgang Irmen

Hans Raasch

Joachim Stiller

Rene Bucken

Norbert Corres

Dieter Horak

Uwe Fabelje

Hermann Rutten

Petra Vautz

Karl-Josef Hohne

Martin Hamacher

Dirk Jagers

Helmut Hensen

Arnold Muck

A tube plate supported in a freely rotatable manner in a creel of a cheese-producing textile machine is provided with a tensioning cone that fits into the cheese tube and fixes it. The tube plate includes a base body with the tensioning cone and a clamping ring, axially movable relative to and supported on the base body.

Tube plate for a creel

A device for winding conical cross-wound bobbins has a creel pivotably mounted about a pivot axis and receiving the conical bobbin, a yarn guide traversing alongside the creel, and a yarn accumulator adapted to accumulate and pay-out a stored length of yarn. The prevailing instantaneous driven diameter (d ) of the cross-wound bobbin ( ) is detected by a first sensor device ( &prime;), the prevailing instantaneous position and/or the direction of travel of the yarn guide ( ) is detected by a second sensor device ( &prime;), and the sensor devices ( &prime;) are connected to a control device ( ) which supplies a control signal for a drive ( ) of the yarn accumulator ( ) as a function of the signals supplied.

Device for winding conical bobbins at a constant yarn delivery rate

In textile machines that produce cross-wound bobbins, especially open-end spinning machines, the yarn is laid onto the cross-wound bobbins with yarn guides. The yarn guides are commonly reciprocated with a driven traversing rod. All the yarn guides of the work stations located next to one another are driven simultaneously by this traversing rod. For the sake of uniform laying of the yarn and so that the traversing rod will not sag under tensile and compressive strain, careful rectilinear guidance of the traversing rod is required. Four successive support rollers each are angularly distributed about the circumference of the traversing rod in such a way that, viewed in the circumferential direction of the traversing rod, mutually identical wheel flanges are always adjacent to one another. Those support rollers which are adjacent with respect to the circumference of the traversing rod and whose wheel flanges are toward one another each have the same angular spacing relative to the other two support rollers.

Yarn guide assembly for laying yarn at a plurality of work stations

A textile machine includes a cheese or cross-wound bobbin winder with winding stations each having a creel for holding a cheese, a reversible rotary cheese drive, a suction nozzle and a swivel drive for swivelling the suction nozzle to the jacket surface of the cheese. A method for grasping a yarn end resting on the cheese includes adjusting a search time during which the inward-swivelled suction nozzle is positioned at the reverse-rotating cheese, in dependence on the instantaneous diameter of the cheese, and on the reverse speed of the rotary cheese drive, which is kept constant over the entire search time. An apparatus for grasping a yarn end resting on the cheese includes a control device, control lines connecting the reversible rotary cheese drive and the swivel drive of the suction nozzle to the control device, and measured value pickups at each winding station for recognizing a predetermined number of cheese revolutions, for detecting the speed of the rotary cheese drive, and for recognizing the swivelled position of the suction nozzle.

Method and apparatus for grasping a yarn end on a cheese

A method and apparatus for moving individual yarn ends into a yarn disposition at a yarn end joining device in a winding station of a bobbin winding machine includes moving individual in succession a yarn end from a delivery bobbin to the yarn end joining device, and a yarn end from a take-up bobbin to the yarn end joining device by a single yarn manipulator device.

Method and apparatus for moving individual yarn ends into a yarn end

The invention to a yarn tension sensor, in particular for yarns traveling at high speed, to accurately ascertain even short-term yarn tension fluctuations. According to the invention, a yarn guide element is mounted on one head end of a plunger coil disposed in a magnetic field. A position sensor is disposed in the region of the plunger coil and detects even minimal changes in position of the plunger coil. These changes in position are reported to a controller, at whose output variations in current are generated and supplied to the winding of the plunger coil, the variations being such to compensate for the axial force generated by the yarn and acting upon the plunger coil, thereby making the plunger coil virtually motionless.

Yarn tension sensor for a textile machine

A multistation automatic textile machine, such as a multi-position winder or spinning machine, having a passageway formed through the machine's end frame structure for accommodating a transport conveyor or other transport path for spinning bobbins and other strand-supporting tubes.

Automatic multi-station textile strand handling machine

The present invention relates to a brake disk arrangement for a yarn tensioning device wherein at least one of a pair of opposed facing brake disks can be acted upon by a variable pressing force in the direction of the other brake disk. According to the present invention, rotary motion is transmitted from one brake disk to the other in a simple manner, without affecting the brake force, by connecting to one of the brake disks a concentric magnet that is secured against relative rotation with respect to this brake disk, and by connecting to the other brake disk a concentrically arranged body of hysteresis material which is secured against relative rotation with that brake disk. At least the brake disk that can be acted upon the variable pressing force comprises a nonmagnetic material and is changeable in position axially relative to the magnet or the hysteresis material associated with the disk. In alternate embodiments, both brake disks may be provided with a magnet.

Rotationally driven brake disk arrangement of a yarn tensioning device

A yarn end preparing apparatus is provided for drawing off a yarn end of a textile yarn package and thereafter rewinding the drawn out yarn end onto the yarn package at a preferred location thereon. The yarn preparing apparatus includes a suction housing supported on a pair of vertical guide rods for movement parallel to the axis of a yarn package to be prepared. A pair of linkage members, each comprising a conduit, are pivotably connected to one another with their respective conduits communicated with one another for applying suction through the conduits to the suction housing to thereby effect drawing in of a yarn end through a suction slot of the suction housing. A light beam emitting member is mounted forwardly of the suction slot for emitting a light beam detected by a light beam detecting member mounted on an opposite forward side of the suction slot. During downward movement of the suction housing to dispose the suction slot adjacent the tapered top portion of a yarn package, the light beam is interrupted by the body of yarn on the yarn package as the suction slot reaches an optimal spacing from the yarn package and a control unit stops the movement of the suction housing in response to the interruption of the light beam to automatically position the suction slot at a predetermined optimal spacing from the tapered top portion of a yarn package independent of the relative axial position of the tapered top portion.

Automatic positioning device for a yarn end finder

A yarn end loosening apparatus is provided for performing yarn end loosening operations on yarn packages. The yarn end loosening apparatus includes a chamber for directing streams of air relative to a yarn package disposed within the chamber to effect loosening of a yarn end from the yarn package. Additionally, the yarn end loosening apparatus includes an assembly for introducing air streams from, respectively, a taller package jet nozzle and a shorter package jet nozzle, the jet nozzles being spaced from one another to each direct a stream of air at the axial location of a type of yarn package having a predetermined axial length. Additionally, the yarn end loosening apparatus includes a device for selectively controlling the supply of air through the taller and shorter package jet nozzles such that only a selected one of the jet nozzles directs air into the chamber during a yarn end loosening operation.

Yarn end loosening apparatus having adjustable height jet nozzles and a

A textile winding machine is provided having an operator accommodating package readying assembly on which individual tube support members are supported at a convenient height to thereby provide an operator with ready access to the tubes or yarn packages supported on the tube support members. The textile winding machine includes a common exit path component along which tube support members are transported after unwinding of the feed packages supported thereon at the winding units of the textile winding machine and an entry conveyor device for raising the tube support members in spaced apart manner from the common exit path component with the tubes or yarn packages out of interference with one another to a feed package re-supply support assembly extending longitudinally along the textile winding machine at a height generally at the waist level of an average operator. During regular re-supply rounds, for example, an operator can conveniently transfer fresh feed packages from a rolling container or other storage device to the empty tube support members supported at waist level and the operator can manually prepare the yarn ends of any partial feed packages as well. A return conveyor allows recirculation of tube support members in a closed loop.

Textile winding machine having an operator accommodating package

A method and apparatus for restoring the normal winding of yarn following a yarn break during a textile winding process is provided. A lower yarn end engaging member executes a predetermined number of attempts to engage a lower yarn end and a package exchange member exchanges a supply package for a fresh supply package in response to the detection of the absence of engagement of a lower yarn end after the predetermined number of lower yarn end engaging cycles. Once a lower yarn end is detected, an upper yarn end engaging means performs a predetermined number of attempts to engage an upper yarn end. If engagement of an upper yarn end is detected after a predetermined number of attempts, the lower yarn end and the upper yarn end are joined together and normal winding is resumed. If an upper yarn end is not detected after a predetermined number of attempts, a problem indicating member is activated to indicate to an operator that normal winding of yarn cannot be restored.

Method and apparatus for evaluating the interruption of winding on a

A yarn package handling assembly is provided for handling yarn packages transported on individual package support members on a textile winding machine. The yarn package handling assembly includes a yarn end disposing arrangement operable to dispose the yarn ends of yarn packages into preferred preliminary dispositions for handling at the winding stations of the machine. Another yarn end disposing arrangement is provided for more aggressively acting on yarn packages to dispose their yarn ends in a preferred preliminary disposition where the first arrangement was unsuccessful, handling yarn packages in a special manner to dispose their yarn ends in a preferred preliminary disposition and the yarn packages prepared by the more aggressive yarn end disposing arrangement are transported along a second transport path back to the path for feeding packages from the first-mentioned arrangement to the winding stations. According to one aspect of the present invention, a tube stripping device can be provided for stripping yarn from tubes. According to another aspect of the present invention, a yarn amount sensing member senses the presence of yarn on tubes discharged from the winding stations and controls recirculates those tubes having more than a minimum amount of yarn to the more aggressive yarn end disposing arrangement.

Assembly for readying yarn packages for unwinding at a textile winding

A yarn end loosening apparatus for a textile machine includes first and second chamber portions which are positionable to form a gas guide chamber for directing jet streams of gas against the yarn package therein to effect loosening of a yarn end. A movement device selectively moves the first chamber portion between the chamber 4 main position in which it forms a gas guide chamber with the second chamber portion, a clearance position in which it permits a tube support member which supports a yarn package to travel away from the winding station of the textile machine and a travel blocking position in which a following tube support member which supports a fresh yarn package is prevented from traveling beyond the unwinding location at which the yarn package is unwound. Another movement device is also provided for moving the second chamber portion to separate each tube support member from a subsequently following tube support member. The chamber movement devices include vertical shafts on which the chamber portions are mounted for pivoting of the chamber portions about vertical axes.

Yarn end loosening apparatus for a textile winding machine

An apparatus for handling yarn during axial unwinding of the yarn from a yarn package at an unwinding device of a textile machine includes a device for restricting laterally outward displacement of the yarn. The restricting device is mounted to at least one of a pair of chamber portions which surround the yarn package during unwinding of yarn therefrom and preferably includes a vertically extending plate shaped to define a yarn receiving area for confining the path of the yarn being unwound. The plate guides the yarn from the inner wall of the chamber formed by the chamber portions into the yarn receiving area. According to another aspect of the invention, a device is provided for engaging a traveling yarn during unwinding of the yarn from a yarn package to eliminate loops, snarls and the like. The engaging device includes a pair of arm members, a pivot assembly for pivotally supporting the arm members for posed pivoting movement and a component for pivoting the arm members toward one another into a guiding position for guiding the traveling yarn and for pivoting the arm members away from one another to a non-engaging position.

Growing community of inventors

Monchengladbach, Germany

Dietmar Engelhardt