W. Schlafhorst & Co.

W. Schlafhorst Ag & Company

Other

Volkmann Gmbh & Co.

Stahlecker; Hans

Hans Raasch

Heinz-Georg Wassenhoven

Hans Grecksch

Heinz-Dieter Gobbels

Manfred Lassmann

Fritz Stahlecker

Heinz Kamp

Josef Derichs

Norbert Schippers

Helmut Schlosser

Hans-Werner Schwalm

Theo Lembeck

Wilhelm Oehrl

Hans-Willi Esser

Erwin Baltsch

Jakob Lenzen

Klaus Pohl

Helmuth Hensen

Friedbert Schmid

Guido Spix

Maximilian Preutenborbeck

Gerhard Rienas

Reinhold Schmid

Stefan Kross

Wilhelm Maassen

Willi Wassen

Joachim Ruge

Wolfgang Loers

Ludwig Neuhaus

Dieter Busch

Helmut Feuerlohn

Paul Straaten

Dieter Langheinrich

Paul Schroers

Lothar Muller

Reinhard Boker

Hans Mullenberg

Klaus Bock

Heinzbert Reiners

Gunter Frehn

Heinz-Dieter Goebbels

Waldemar Bech

Johan Remmerie

Hans Ludwig Neuhaus

An open-end spinning device with an opening device for opening continuously supplied sliver material by means of a rapidly running opening cylinder, which opening device is arranged in front of a sliver spreading device ( ) with cooperating pairs of spreading cylinders. The spreading cylinders ( ) comprise flanges that engage into recesses of the opposing spreading cylinder. The spacing between the particular cooperating spreading cylinders ( ) can be periodically varied. An unobjectionable opening process with a low speed of the opening cylinder and with a widened opening cylinder can be achieved with the sliver spreading device ( ) of the invention which process is associated with a high-precision dosing and high yarn uniformity.

Sliver opening device for an open-end spinning device

An air-spinning arrangement has an opening device having a feed device and an opening roller for opening a sliver into individual fibers. A perforated removal roller receives the opened fibers from the opening roller in the circumferential direction. A conveyor belt conveys the fibers from the removal roller to a nip with a following air-spin nozzle for forming a yarn. The conveyor belt is arranged axially-parallel with the removal roller. A sufficiently close spacing of the conveyor belt from the removal roller is selected such that the fibers conveyed to the removal roller can be picked up by mechanical contact, and the conveyor belt is driven such that it deflects the fibers by approximately 90&deg; and conveys them to the combing location. The air-spinning arrangement allows the formation of a fiber structure that is well suited to the air-spinning process.

Air-spinning arrangement

A device for opening slivers (,) for feeding an OE spinning device (,), comprising a sliver feed device defining a sliver clamping position (,), a rotating opening roller (,) having a circumference with spirally extending combing elements (,) for engaging at the clamping position (,) into a sliver being fed by the sliver feed device. In order to improve the opening of the sliver, a support roller (,) also having spirally extending combing elements (,) is arranged in the direction of fiber feeding after the clamping position (,) with its combing elements (,) extending into the intermediate spaces between the spirally extending combing elements (,) of the opening roller (,) and rotates counter to the opening roller (,) for combing sliver therewith in a common effective range (,).

Device for opening slivers

In a method for winding a yarn onto a spool body, the conical spool body is driven about a longitudinal axis by a first drive unit. A yarn is guided onto the spool body by a reciprocating yarn guide thereby winding the yarn onto the spool body. A constant yarn winding speed is provided along the length of the spool body during the entire yarn winding process by adjusting the revolutions per minute of the spool body synchronously with a movement of the reciprocating yarn guide. The revolutions per minute are controlled by a computing and control unit based on the instant position of the reciprocating yarn guide and the diameter of the spool body at the instant position. The device for performing this method has a sensor for detecting the changing diameter of the spool body, and the reciprocating yarn guide has a detection device for detecting the instant position of the reciprocating yarn guide.

Method and device for winding yarn onto a conical spool body

As an alternative to an expensive bus system commonly utilized in multi-station automatically operating textile machines for exchange of data between a central control device and local control devices at the individual work stations, the present invention provides a central control device disposed on a traveling service unit which can be positioned sequentially at each work station, particularly in the course of a restart of the textile machine, for transmitting data between the central control device and the individual control device of each work station, e.g., for supplying control data to the work stations, for collecting event data, production data and yarn quality data from the work stations, and for assimilating the collected data when the service unit is positioned in front of a work station.

Textile machine with a central control device and local control devices

An open-end spinning unit having a one-piece fiber guide conduit inserted between the opening roller housing and the rotor housing is drawn from a steel tube and embodied as an interchangeable component. The fiber guide conduit can be releasably mounted at one end in the opening roller housing in a seating recess and at the other end in the rotor housing in a bore of a sealing plate that is attached to the rotor housing. The sealing plate maintains a low pressure condition created by a vacuum line attached to the rotor housing. This low pressure condition induces the pneumatic conveyance of opened fibers from the opening roller to the rotor through the fiber guide conduit. Sealing components, such as an O-ring in the opening roller housing and a sealing nozzle at the rotor housing assure that a sealed connection of the fiber guide conduit both with the opening roller housing and with the sealing plate is maintained for pneumatic conveyance.

Fiber guide conduit in an open-end spinning unit

A sliver feeding device for an open-end spinning frame, comprising a sliver draw-in roller and a sliver feed trough pivotable about a supporting shaft for movement toward and away from the draw-in roller. The draw-in roller has an annular sliver conveying collar which defines a sliver nip between the collar and the feed trough, and the feed trough has opposed laterally spaced bars for receiving the collar therebetween to guide the sliver at the nip. The draw-in roller is rotatably supported so as to permit a predetermined amount of axial movement of the collar between the guide bars of the feed trough. Similarly, a predetermined amount of axial movement of the feed trough is permitted on the supporting shaft. The collar has axial end faces each comprising a respective cleaning device. The guide bars of the feed trough have inwardly facing bevels which, in connection with the axial play of the feed trough on the supporting shaft, assure automatic pivoting of the feed trough into its operating position.

Sliver feeding devices for open-end spinning frames

An open-end spinning apparatus in a spinning machine for continuous spinning of textile fibers includes a spinning rotor having an axis. A cap covers the spinning rotor and is pivotably supported about a pivot axis oriented at right angles to the rotor axis. Delivery and opening devices are disposed in the cap for supplying textile fibers to the spinning rotor. A stationarily installed shaft extends longitudinally of the spinning machine for driving a multiplicity of opening devices. A worm transmission drives at least the opening device and has a driving worm on the stationarily installed shaft and a worm wheel with teeth on a drive shaft of the opening device. The worm wheel meshes with and plunges into the driving worm upon closure of the cap. The driving worm includes at least one thread having adjacent windings with end surfaces and with lateral surfaces having an additional shaping tapering the end surfaces to a point. Two of the adjacent windings have tips being spaced apart by a spacing being great enough to cause at least one of the teeth of the worm wheel to be forced between two of the windings upon plunging into the driving worm.

Open-end spinning apparatus

An open-end rotor spinning machine is equipped with a service structure for the automatic correction of yarn breaks occurring in the course of the bobbin winding and for the automatic exchange of empty tubes for finished packages, wherein empty tubes are delivered to and finished packages are removed from the work stations via an endless transport device. The service structure has a package ejector for ejecting finished packages from the work stations, a tube gripper for retrieving an empty tube from the transport device, and a tube positioning device connected with the package ejector of the service structure to position an empty tube held by the tube gripper precisely into desired disposition relative to a respective work station to be supplied with an empty tube.

Service arrangement for a textile machine for producing wound yarn

An open-end spinning unit includes a rotor housing and a rotor revolving in the rotor housing and having a fiber collecting groove formed therein defining a groove bottom. An apparatus for cleaning the rotor includes a cleaning device having a scraper to be positioned in a predetermined position in the fiber collecting groove of the rotor. The scraper automatically assumes an optimal length independently of its abrasion from wear upon entry of the cleaning device into the rotor, for assuring a secure placement of the scraper in the bottom of the fiber collecting groove.

Apparatus for cleaning a rotor revolving in the rotor housing of an

An open-end spinning apparatus includes a rotor housing. A spinning rotor revolves in the rotor housing. A spinning insert is disposed coaxially to the rotor housing and is rotatably supported relative to the spinning rotor. The spinning insert has a yarn guide channel enabling entrainment of the spinning insert by a yarn during normal spinning operation. A coupling device fixes the spinning insert to the spinning rotor during a run-up of the rotor.

Open-end rotor spinning apparatus

A rotor spinning apparatus includes a support frame stationarily disposed on a frame of a spinning machine. A bearing is disposed on the support frame. A spinning rotor is disposed on the bearing and has a rotor axis and a rotor opening. A rotor housing surrounds the spinning rotor. A lid element is rotatably supported about a pivot axis. The pivot axis is oriented orthogonally to the rotor axis and is disposed approximately vertically beneath the rotor opening. The lid element covers the rotor housing and has a sliver feed roller, an opening roller, a fiber guide channel plunging into the rotor opening, a yarn draw-off opening, and a dirt separator.

Rotor spinning apparatus with spinning box dirt separator

A machine producing cross-wound bobbins or cheeses has a yarn guide rod including axially coupled-together partial rods. Each partial rod includes a tubular abrasion-proof jacket, and a compact bar body being formed essentially of fibers embedded in a plastic matrix and being disposed in and joined to the tubular jacket in a shift-proof manner.

Yarn guide rod for a machine producing cross-wound bobbins

An apparatus for removing fully wound cheese-type textile yarn packages from a textile machine and replacing them with empty yarn winding tubes comprises an endless transport apparatus having a plurality of transport units connected via a traction member. Each transport unit has a freely accessible, upwardly facing transport receiver surface which is selectively used for receiving a completed cheese package as well as receiving an empty replacement tube. The exchange of a full package for an empty tube is performed by means of a traveling servicing unit on the textile machine, equipped with, among other things, a tube gripper for handling the empty replacement tubes and servicing elements for handling the completed cheese packages.

Apparatus for transporting empty yarn winding tubes and fully wound

An open-end spinning machine embodied as a yarn piecing unit for automatically repairing yarn breaks during bobbin winding and for replacing finished bobbins with empty tubes, and an auxiliary yarn transport arrangement for supplying and removing an auxiliary yarn used for the piecing operation. The auxiliary yarn transport arrangement has a yarn supply tube that can be positioned among various operating positions: (a) a first position wherein the auxiliary yarn is transferred to a yarn locating nozzle of the piecing unit; (b) a second operating position wherein the piecing cycle is initiated by spinning an end of the auxiliary yarn with individual fibers fed into the spinning rotor of the spinning machine; and (c) a third operating position wherein the auxiliary yarn and its pieced end is severed from the trailing length of newly spun yarn from the spinning rotor and the new yarn is applied to an empty tube in the winding creel of the spinning machine.

Open-end spinning machine for producing cross-wound bobbins

Growing community of inventors

Monchengladbach, Germany

Hans Raasch