W. Schlafhorst & Co.

W. Schlafhorst Ag & Company

Zinser Textilmaschinen Gmbh

Edmund Wey

Hans Grecksch

Gregor Kathke

Leo Tholen

Herbert Knors

Manfred Anderheggen

Joachim Rohner

Manfred Langen

Josef Derichs

Manfred Lassmann

Karl-Josef Brockmanns

Josef Bertrams

Wilhelm Zitzen

Klaus Rosen

Joachim Ruge

Hermann Rutten

Manfred Marquardt

Albert T Pesch

Gregor Gabald

Horst Buttner

Johann Blask

Uwe Fabelji

A method and apparatus for controlling the yarn tension of yarn being cross-wound onto a bobbin on a textile winding machine. The amount of yarn on a supply package from which yarn is unwound is determined optoelectronically, gravimetrically or by measuring the yarn tension. The winding speed of the bobbin is adjusted in response to the determined yarn amount of the supply package so as to maintain the yarn tension substantially constant during unwinding. The winding speed of the bobbin can be controlled to follow a predetermined winding speed program which corresponds to the determined mass of the supply bobbin. To determine the yarn amount gravimetrically, the supply package is weighed by a balance device as it is conveyed thereover by a conveyor. The movement of the balance in response to the mass of the supply package can be electronically transmitted to a control device which prepositions a cam having a profile corresponding to the predetermined winding speed program. The rotation of the bobbin is then electronically controlled in response to the movement of a cam follower which follows the cam.

Method and apparatus for controlling the yarn tension of yarn being

A method and apparatus for transporting a plurality of packages from the winding stations of a textile machine to a location for further handling or processing is provided. A pair of movable arms movably mounted to a carriage releasably engage a package support means to move the package support means between a package receiving position in which it receives packages transferred thereto by the traveling service unit of the textile machine and a transport position in which the package support means is released to a conveyor belt assembly for transport to the location for further handling or processing. The carriage includes rollers which travel along rails mounted on a selectively extendable and retractable bracket. The bracket is vertically movably supported on a vertical post. The movement of the vertical post and the extendable and retractable bracket are controlled to manipulate the arms to engage an empty package support means once it has released a package support means with a plurality of packages thereon to a conveyor belt assembly.

Method and apparatus for transporting groups of packages from winding

A method and apparatus are provided for separating a yarn end of a yarn package from the outer layer of the yarn package and disposing the separated yarn end onto the yarn package in a preferred disposition. The apparatus includes a drive device for rotating a yarn package in an unwinding direction, an assembly for performing a yarn end drawing out operation during the unwinding rotation of the yarn package and a device for determining that a successful yarn end drawing out operation has been performed including an assembly for detecting that a yarn end of at least a predetermined length has been drawn out. The apparatus also includes an assembly for controlling the drive device to stop the unwinding rotation of the yarn package in response to the earlier of the lapse of a predetermined period of time and the receipt of a signal from the detecting device indicating that a successful yarn end drawing out operation has been performed. A designation device applies a designation to those yarn packages which do not have a yarn end which has been successfully drawn out, and a reading device and a yarn package transfer device operate together to transfer such unsuccessfully prepared yarn packages.

Method and apparatus for drawing out and subsequently rewinding a yarn

A method and apparatus for preparing a yarn package for a subsequent yarn restarting operation are provided. The apparatus includes an air jet for directing a tangential stream of pressurized air against a yarn package to effect loosening of a length of auxiliary yarn which has been wound on the yarn package during a prior unsuccessful yarn restarting operation in which the auxiliary yarn length failed to piece with the yarn still to be wound onto the yarn package. The air jet operates in cooperation with a suction conduit to completely unwind the unsuccessfully pieced auxiliary yarn length from the yarn package to thereby prepare the yarn package for receiving another length of auxiliary yarn during a subsequent yarn restarting operation. According to one aspect of the invention, the auxiliary yarn travels over a roller supported at the free end of a delivery arm mounted on a traveling service unit and the roller is selectively disposable in rotation transmitting engagement with the lower roller of a roller pair of the drafting device to effect feeding of the auxiliary yarn onto the yarn package. If the auxiliary yarn has not successfully pieced with the still-to-be-wound yarn after a predetermined lapse of time, the roller on the delivery arm is positioned against an upper roller of a roller pair of the drafting device to effect unwinding of the auxiliary yarn previously wound onto the yarn package.

Method and apparatus for preparing a yarn package for a subsequent yarn

A method and winding apparatus for detecting feed bobbins having feed properties that do not correspond to a predetermined quality when winding feed bobbins onto cross-wound bobbins in an automatic bobbin winding machine is disclosed. The method comprises the steps of measuring the winding speed, counting yarn breaks before a predetermined threshold speed is reached for forming a yarn break count, detecting the quality of a given feed bobbin by comparing the yarn break count with a predetermined number and determining that the given feed bobbin has not attained a predetermined quality if the yarn break count reaches the predetermined number; if the quality is not attained, the given feed bobbin is rejected and the winding process is continued with a new feed bobbin.

Method and apparatus for detecting the feed properties of feed bobbins

A method and device for combining cheese pairs made up of cheeses of different types in a cheese-producing textile machine having a plurality of adjacent winding stations and a cheese transporter disposed along the machine, the cheese transporter having an end at which the cheeses become disposed for further availability, the cheese transporter including at least one mobile automatic cheese exchanger for removing the cheeses from the winding stations and readying them for further transport, which comprises automatically transforming the cheeses to the cheese transporter in cooperation with the mobile automatic cheese exchanger; after depositing a row of pairwise arranged cheeses on the cheese transporter, setting the cheese transporter into motion only when at least one of the following has been determined by automatic devices: that the winding stations have delivered the cheeses correctly and in the correct amounts, that the predetermined amount of cheese pairs is present, that irregular pairs of cheeses and excess cheeses are identified as such and that the original winding station of irregular cheeses has been identified, and a device for performing.

Method and device for combining pairs of cheeses

A method and apparatus for transporting packages from stations of a textile machine to a location for further handling or processing includes a package support device. Packages are transferred from the winding station to the package support device and, when a plurality of packages are supported on the package support device, the package support device places the plurality of packages selectively onto one of a pair of package transport devices for transport of the plurality of packages from the stations to a location for further handling or processing. The package support device supports the plurality of packages at a clearance with respect to the pair of package transport devices sufficient to permit the package transport devices to transport packages therepast.

Method and apparatus for assembling a plurality of packages for

Bobbins spun in a ring spinning machine are conveyed sequentially to a measuring, counting and sorting device located between the ring spinning machine and an automatic winder that winds yarn from the bobbins. The measuring, counting and sorting device senses the presence of a bobbin, counts the bobbins being sensed, senses yarn and bobbin characteristics and compares the characteristics with predetermined standards. The device separates bobbins whose characteristics differ from the standard. Data regarding the operation of the spinning machine and operation of the winding machine are combined with the data obtained by the measuring, counting and sorting device and statistically evaluated for display or for controlling the production of the spinning machine and winding machine or for controlling conveyance of the packages from the winding machine.

Method and device for monitoring the quality of yarns and wound packages

An improvement in a multi-station bobbin winding machine having an active cop unwinding position and replacement cop reserve position at each winding station with a movable reserve cop receptacle at the reserve position, wherein a yarn suction device is affixed at each winding station to the receptacle for disposition adjacent a nose portion of a reserve cop received thereby for locating and retaining a leading yarn end of the reserve cop, without obstructing operator access to the winding station.

Bobbin winding machine

An automatic bobbin winder includes a bobbin removal location; a bobbin transfer point; a bobbin conveyor belt for storing bobbins and transporting bobbins toward the bobbin removal location, the bobbin conveyor belt having an end at the bobbin transfer point; a travelling bobbin changer disposed below the bobbin conveyor belt for transporting individual bobbins; a bobbin transfer device at the bobbin transfer point being controlled by the bobbin changer for successively transferring bobbins from the bobbin changer to the bobbin conveyor belt; a device for advancing the bobbin conveyor belt by at least one bobbin width in a given storage direction prior to each bobbin transfer; and a device for initiating a priority transport run of the bobbin changer for transporting an individual bobbin to the transfer point after each bobbin transfer.

Automatic bobbin winder with a travelling bobbin changer

A textile machine assembly includes a textile machine for producing cross-wound bobbins, the textile machine having a head end, bobbin winding stations and a cross-wound bobbin collector disposed at the head end of the machine; a bobbin changer machine traveling from winding station to winding station for exchanging fully wound individual cross-wound bobbins for empty or partially wound tube sleeves at the winding stations and for transporting individual cross-wound bobbins from the winding stations to the collector; and a device disposed at least at one of the machines for causing the bobbin changer machine to transport cross-wound bobbins to the collector after each bobbin exchange has occurred and before beginning another bobbin exchange.

Textile machine for producing cross-wound bobbins

The compressed-air pipe (20) leading to the splicing chamber (1) of the yarn splicing device encloses a humidification tube (30) which opens into this compressed-air pipe and which proceeds from a container filled with liquid (24) in which the liquid level is below the aperture (5) of the splicing chamber (1).

Device for dosing and injecting a small quantity of liquid into the

Controlled compressed-air splicing device for textile threads with a controlled compressed-air metering valve supplied from a compressed-air supply device, including an automatic quality control device for ensuring the quality of spliced joints formed by the splicing device.

Controlled compressed air splicing device

Device for removing dust from a winding machine, including an air suction channel disposed alongside and adjacent to a run-off coil, the air suction channel having at least one suction opening formed therein in longitudinal direction of the run-off coil.

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Nettetal, Germany

Edmund Wey