On Open-end Machine Patents (Class 57/263)
  • Patent number: 10907278
    Abstract: A method for automatically piecing a thread at a workstation of a textile machine, includes seeking an end of the thread on a surface of a bobbin with a suction nozzle and unwinding the thread from the bobbin counter to a regular draw-off direction of the thread and sucking the thread into the suction nozzle. The bobbin is driven in a direction of reverse rotation with a drive. A thread loop is draw-opened in the thread and moved towards a piecing unit via movement of a feeder unit. The bobbin is driven in the direction of reverse rotation during the drawing-open of the thread loop such that the thread is unwound from the bobbin. A speed of reverse rotation of the bobbin is coordinated with movement of the feeder unit.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: February 2, 2021
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Bernd Bahlmann, Romeo Pohn, Sebastian Brandl, Mario Maleck, Frank Baier, Robert Hagl, Thomas Gruber, Robin Wein, Christian Kettner, Andreas Hoyer
  • Patent number: 10593500
    Abstract: A linkage worm gear for an automatic opening/closing driving mechanism, wherein the linkage worm gear is integrally and concentrically provided with a worm gear driven portion, a gear driving portion and a cam linkage portion successively in the direction of the rotation central axis thereof; worm gear teeth fitted with a driving worm gear are provided on the whole peripheral wall of the worm gear driven portion; a reset groove, a recess, a transition portion and a boss are successively provided on the periphery of the cam linkage portion; and a plurality of driving teeth are provided on part of the peripheral wall of the gear driving portion.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: March 17, 2020
    Assignee: HONGXIU ELECTRICAL CO., LTD.
    Inventors: Wenxiu Zheng, Yiyang Zheng, Jiangbo Qian
  • Patent number: 10414623
    Abstract: A method is provided for operating a textile machine, with a multiple number of adjacent work stations having a respective spinning unit with a spinning device and/or one winding device and handling elements for piecing a thread or for connecting two thread ends. If production is interrupted, a thread end on the bobbin side is provided to a defined receiving position at the work station. For piecing the thread or for connecting the thread ends, the thread end on the bobbin is cut to length by the work station work elements, received from the receiving position, prepared for piecing or for connecting and pieced up or connected. A thread end wound on the bobbin is sought out by means of a thread seeking device deliverable to multiple work stations of the textile machine, and the thread end is subsequently moved into the receiving position at the work station, from which it is received by the work station work element of the work station, in particular by a handling element of its own work station.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: September 17, 2019
    Assignee: Rieter Ingolstadt GmbH
    Inventors: Romeo Pohn, Adalbert Stephan, Gerd Stahlecker, Gernot Schaeffler
  • Patent number: 10400360
    Abstract: A rotor spinning machine and associated method are provided for preparing a yarn end for spinning-in at a rotor spinning device, wherein the rotor spinning machine has a rotor housing that is closable with a cover and subjected to negative pressure through a negative pressure channel. A spinning rotor is rotatably mounted in the rotor housing and rotates with an operating rotational speed during a spinning operation. With the method, the yarn end is introduced into the negative pressure channel. The yarn end is then interrupted with a severing structure defined on an open edge of the rotating spinning rotor. During the interruption of the yarn end, the spinning rotor is driven with a defined rotational speed for the preparation of the yarn end that is equal to or less than an operating rotational speed of the spinning rotor.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: September 3, 2019
    Assignee: Reiter Ingolstadt GmbH
    Inventors: Frank Baier, Jiri Sloupensky, Milos Ferkl, Jiri Kutlvasr
  • Patent number: 9969594
    Abstract: A retracting device and method for retracting a hose, the device comprising: a frame; at least one drive roller connected to the frame for driving the hose for retraction; a first and a second pressing element operatively connected to the at least one drive roller and suitable for pulling the hose upward in co-action with the at least one drive roller; an activating element operatively connected to the two pressing elements and suitable for activating the pressing elements such that no more than one pressing element presses against the drive roller.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: May 15, 2018
    Assignee: HYTRANS BEHEER B.V.
    Inventors: Robert Dirk Hut, Appie Veenema
  • Patent number: 9631299
    Abstract: A textile machine, especially a spinning machine or winding machine, has numerous identical workstations arranged beside one another along a longitudinal side, with numerous maintenance devices movable along the workstations for servicing the workstations, and with a control and communication system. The maintenance devices are connected to a bus topology component through a maintenance device bus line, in which case at least some of the bus topology components are connected to the control and communication system with a common bus line. The bus topology components are arranged in a middle area of the textile machine, in the longitudinal direction (LR) of the textile machine.
    Type: Grant
    Filed: October 11, 2013
    Date of Patent: April 25, 2017
    Assignee: Rieter Ingolstadt GmbH
    Inventors: Mario Maleck, Harald Widner
  • Patent number: 9238881
    Abstract: A roving machine and method for producing a roving from a fiber sliver has at least one spinning station with a vortex chamber, an infeed opening for the fiber sliver, and a roving forming element in the form of a spindle that has an inlet port and extends at least partially into the vortex chamber. The vortex chamber is associated with spinning nozzles through which air can be guided into the vortex chamber to impart, after a piecing process, a protective twist to the fiber sliver in the region of the inlet port. The spindle has a draw-off channel via which the roving provided with the protective twist is drawn out of the vortex chamber. Piecing nozzles are additionally associated with the vortex chamber, wherein each of the piecing nozzles has a flow direction which is aligned in the direction of the inlet port of the spindle.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: January 19, 2016
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Christian Griesshammer, Petr Haska
  • Patent number: 8931249
    Abstract: A method interrupts yarn production on a spinning machine having at least one spinning point having an inlet for a fiber material and an outlet for the yarn made from the fiber material, and wherein the spinning machine comprises a delivery device for feeding the fiber material into the spinning point, a take-off device for drawing off the yarn out of the spinning point, a winding device for winding up the produced yarn, and a yarn monitoring unit for monitoring at least one yarn parameter. Yarn production is interrupted upon detecting a defined deviation of the monitored yarn parameter from a target value, upon changing bobbins at the winding device, and/or prior to switching off the spinning machine.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 13, 2015
    Assignee: Rieter Ingolstadt GmbH
    Inventors: Adalbert Stephan, Gernot Schäffler, Evzen Pilar, Martin Novak, Vítezslav Kubes, Josef Ludvícek, Vladimir Krycner
  • Patent number: 8904742
    Abstract: The invention relates to a method of operation for an air jet spinning machine, which is characterized in that the spinning process is interrupted when a yarn fault is detected, and subsequent to the interruption of the spinning process, a piecing process is initiated which is at least partly carried out by the spinning station and in which a number of yarn process and handling devices directly assigned to the spinning station are applied. Furthermore, an air jet spinning machine is proposed which permits such a piecing method.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: December 9, 2014
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Adalbert Stephan, Gerd Stahlecker, Gernot Schäffler
  • Publication number: 20140283496
    Abstract: The invention relates to a spinning point (1) of a spinning machine, whereas the spinning point (1) includes a spinning unit (5), a drawing-off device (6) for the yarn (2) downstream of the spinning unit (5) in the direction of transport (T) and a yarn accumulator (7) downstream of the drawing-off device (6) for the intermediate accumulation of a section of yarn, whereas the yarn accumulator (7) is allocated a sensor system (8) for monitoring the filling level of the yarn accumulator (7), whereas the spinning point includes a spooling device (9) for the yarn (2) downstream of the yarn accumulator (7), along with a return unit (10), with the assistance of which an end of the yarn (11), which is found within the yarn accumulator (7) after a yarn break, is able to be returned in the area of the spinning point (1).
    Type: Application
    Filed: March 18, 2014
    Publication date: September 25, 2014
    Applicant: Maschinenfabrik Rieter AG
    Inventors: Gerd Stahlecker, Markus Kübler, Gernot Schäffler, Evzen Pilar, Javier-Orlando Ricaurte-Rubio
  • Publication number: 20130333347
    Abstract: The invention relates to a method of operation for an air jet spinning machine, which is characterized in that the spinning process is interrupted when a yarn fault (18) is detected, and subsequent to the interruption of the spinning process a piecing process is initiated which is at least partly carried out by the spinning station (2) and in which a number of yarn process and handling devices directly assigned to the spinning station (2) are applied. Furthermore, an air jet spinning machine is proposed which permits such a piecing method.
    Type: Application
    Filed: June 19, 2013
    Publication date: December 19, 2013
    Inventors: Adalbert Stephan, Gerd Stahlecker, Gernot Schäffler
  • Publication number: 20130227925
    Abstract: The inventions relates to the method of yarn braking especially at renewal of spinning in a working position of an air jet spinning machine by means of attending a device provided with a vacuum tube (2), into which before commencement of braking there is the end of the yarn (100) sucked in, which at drawing off from the vacuum tube (2) is braked between the braking surfaces of a stationary brake friction member (50) and a moving brake friction member (30), which are arranged on the attending device displaceably to the track of the yarn (100), while for generating the braking force the moving brake friction member (30) moves towards the stationary brake friction member (50) and it fits against it at a contact abscissa (301) or a contact surface (302).
    Type: Application
    Filed: November 28, 2012
    Publication date: September 5, 2013
    Applicant: MASCHINENFABRIK RIETER AG
    Inventors: Adalbert Stephan, Marek Burysek
  • Patent number: 8061116
    Abstract: A method for piecing a yarn at a rotor spinning machine comprising plural spinning stations, wherein more than five piecers are successively produced in a measuring phase and coordinates of measurement values and associated measurement values from individual measurements of the piecers are evaluated for averaging and determining a fiber band function taking into account a drafting reduced for the measurement values, which reflects the fiber flow behavior in the form of the respective fiber band quantity supplied to the rotor as a function of the transport path of the fiber band feed. The speed of the fiber band feed is controlled in a delayed manner from the run-up of the yarn draw-off, dependent on the rotor speed, by the fiber band function, such that the fiber shortfall quantity being produced from the fiber band function is compensated by dynamic feed addition with respect to height and length.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: November 22, 2011
    Assignee: Oerlikon Textile GmbH & Co KG
    Inventor: Manfred Lassmann
  • Publication number: 20100307125
    Abstract: An open-end spinning system characterized by laying straightened fibers next to each other onto an endless member and moving these deposited fibers in a generally perpendicular direction to the fiber orientation into a twisting zone where they are twisted and compacted into a yarn.
    Type: Application
    Filed: June 8, 2009
    Publication date: December 9, 2010
    Inventor: Kurt W. Niederer
  • Patent number: 7690181
    Abstract: A method for operating a spinning machine with plural spinning stations (1), each case having a take-off roller device (6, 10, 14) for drawing a yarn (9) from a spinning device (2) and a sensor mechanism (26) for checking piecings. When starting a piecing, the theoretical conveying length of the yarn is determined based on the surface speed of the rollers (10, 14), until the piecing reaches the sensor mechanism (26). The deviation of the theoretical conveying length from a desired yarn length, corresponding to the spacing between the spinning device (2) and the sensor mechanism (26), is detected. The deviation is compared with a preadjustable limit value of the permissible deviation. If the limit value is passed, this indicates intolerable wear of the pressure roller (14) and produces a signal.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: April 6, 2010
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventor: Manfred Lassmann
  • Publication number: 20100071341
    Abstract: A method for piecing a yarn at a rotor spinning machine comprising plural spinning stations, wherein more than five piecers are successively produced in a measuring phase and coordinates of measurement values and associated measurement values from individual measurements of the piecers are evaluated for averaging and determining a fiber band function taking into account a drafting reduced for the measurement values, which reflects the fiber flow behaviour in the form of the respective fiber band quantity supplied to the rotor as a function of the transport path of the fiber band feed. The speed of the fiber band feed is controlled in a delayed manner from the run-up of the yarn draw-off, dependent on the rotor speed, by the fiber band function, such that the fiber shortfall quantity being produced from the fiber band function is compensated by dynamic feed addition with respect to height and length.
    Type: Application
    Filed: November 2, 2006
    Publication date: March 25, 2010
    Applicant: OERLIKON TEXTILE GMBH & CO. KG
    Inventor: Manfred Lassmann
  • Patent number: 7681389
    Abstract: A suction air nozzle for a textile machine for storing a yarn length of a running yarn passing the nozzle opening. The nozzle has an elongate nozzle body, with a clear cross section having a narrower width in the region of its central longitudinal axis than in its tube-like edge regions. The nozzle further has an inlet opening, which has its largest width in the yarn running direction. The clear cross section of the nozzle body of the suction air nozzle increases from the inlet opening of the nozzle body in the axial direction to an end-side outlet opening.
    Type: Grant
    Filed: November 13, 2006
    Date of Patent: March 23, 2010
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Maximilian Preutenborbeck, Wilhelm Oehrl, Detlef Schelter
  • Patent number: 7644570
    Abstract: The invention relates to a method for operating an open-end spinning device (1), comprising a spinning rotor (2) and an opening roller (12), which can be controlled so as to be driven individually independently of one another, wherein after an interruption in the spinning process takes place as a result of the detection of the absence of a thread, a piecing operation is initiated, comprising a piecing process, in which an upper thread passes through a fiber ring formed in the spinning rotor (2) and is connected to the latter, and a subsequent drawing-in accumulating process which serves to reduce a thin point in the thread following the piecer, wherein during the piercing operation, the opening roller (12) is temporarily driven at a piecing speed which is higher than the operating speed of the opening roller (12).
    Type: Grant
    Filed: May 18, 2006
    Date of Patent: January 12, 2010
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventor: Manfred Lassmann
  • Patent number: 7594382
    Abstract: A joining method wherein fibers of a fiber band are wound around an auxiliary thread threaded into a spinning device and drawn through a spinning cone. The newly spun thread is separated from the auxiliary thread and connected to the end of an upper thread. A spinning device is provided for a jet spinning machine for carrying out such method, comprising a first clamping device for temporary clamping of the upper thread and a second clamping device for temporary clamping of the auxiliary thread. A jet spinning machine for carrying out the method has a mechanism for storing the auxiliary thread and the newly spun thread, a mechanism for separating the auxiliary thread from the newly spun thread, and a splicing mechanism for connecting the newly spun thread to the upper thread, all arranged only on at least one operating carriage displaceable along multiple spinning stations.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: September 29, 2009
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Thomas Weide, Helmut Feuerlohn
  • Publication number: 20090120052
    Abstract: The invention relates to a method for operating an open-end spinning device (1), comprising a spinning rotor (2) and an opening roller (12), which can be controlled so as to be driven individually independently of one another, wherein after an interruption in the spinning process takes place as a result of the detection of the absence of a thread, a piecing operation is initiated, comprising a piecing process, in which an upper thread passes through a fiber ring formed in the spinning rotor (2) and is connected to the latter, and a subsequent drawing-in accumulating process which serves to reduce a thin point in the thread following the piecer, wherein during the piercing operation, the opening roller (12) is temporarily driven at a piecing speed which is higher than the operating speed of the opening roller (12).
    Type: Application
    Filed: May 18, 2006
    Publication date: May 14, 2009
    Inventor: Manfred Lassmann
  • Publication number: 20090094958
    Abstract: A joining method wherein fibers of a fiber band are wound around an auxiliary thread threaded into a spinning device and drawn through a spinning cone. The newly spun thread is separated from the auxiliary thread and connected to the end of an upper thread. A spinning device is provided for a jet spinning machine for carrying out such method, comprising a first clamping device for temporary clamping of the upper thread and a second clamping device for temporary clamping of the auxiliary thread. A jet spinning machine for carrying out the method has a mechanism for storing the auxiliary thread and the newly spun thread, a mechanism for separating the auxiliary thread from the newly spun thread, and a splicing mechanism for connecting the newly spun thread to the upper thread, all arranged only on at least one operating carriage displaceable along multiple spinning stations.
    Type: Application
    Filed: March 28, 2006
    Publication date: April 16, 2009
    Applicant: Oerlikon Textile GmbH & Co. KG
    Inventors: Thomas Weide, Helmut Feuerlohn
  • Patent number: 7500344
    Abstract: Device for generating and controlling a yarn reserve to be installed on service trolleys with open-end spinning frames, for reattachment and start-up interventions on the spinning unit, comprising a mouthpiece which sucks and generates in its interior a loop of reserve yarn, equipped, inside, with sensors for detecting the dimension of the loop of reserve yarn and consequently piloting the reattachment procedure and reconsignment of the bobbin to its standard functioning.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: March 10, 2009
    Assignee: Savio Macchine Tessili S.p.A.
    Inventors: Roberto Badiali, Vittorio Colussi, Donato Castellarin
  • Patent number: 7464529
    Abstract: A process and an arrangement for re-starting a previously interrupted spinning process in a spinning arrangement is provided. The arrangement includes a drafting unit which can be shut down and also an airjet unit including a vacuum chamber. For the purpose of removing an initially inhomogeneous fiber stream, a staple fiber strand, delivered by the re-operating drafting unit, is temporarily suctioned as waste via a deflecting device after it has left the drafting unit. Only then, when a homogeneous fiber stream has formed, is the staple fiber strand joined with a thread which is transported through the airjet unit. The inhomogeneous fiber stream is removed with the aid of the low pressure in the vacuum chamber.
    Type: Grant
    Filed: July 30, 2004
    Date of Patent: December 16, 2008
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Gerd Stahlecker, Gernot Schaeffler, Peter Schweier
  • Patent number: 7464530
    Abstract: A process for preparing a piecing operation in an air jet spinning arrangement is described. The air jet spinning arrangement comprises a drafting device, whose main drafting zone is bordered on its entry side by an apron roller pair and on its exit side by a delivery roller pair. The apron roller pair is connected to a first drive, the delivery roller pair to a second drive. When the spinning process is interrupted, the delivery of a closed staple fiber strand is stopped in the main drafting zone and a new starting end of the staple fiber strand is created. This new starting end is to be pieced together with an end of a thread already spun. To create a new starting end of the staple fiber strand suitable for piecing, the apron roller pair and the delivery roller pair are each controlled separately when the spinning process is interrupted and are shut down one after the other, in such a way that in the main drafting zone a new starting end of the staple fiber strand is formed.
    Type: Grant
    Filed: October 13, 2005
    Date of Patent: December 16, 2008
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Gerd Stahlecker, Gernot Schaeffler
  • Patent number: 7454889
    Abstract: A method for producing an effect yarn on an open-end rotor spinning machine, formed from an alternating line-up of yarn sections and effects consisting of pre-determined thickenings, wherein an effect is produced where the yarn is joined by means of a piecing end, in the piecing region of the yarn located downstream of the piecing end, following a break in the thread. The quality of the yarn produced in this way is improved such that unwanted deviations from the pre-determined repeat of pattern of the effect yarn, caused by piecing regions, are eliminated.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: November 25, 2008
    Assignee: Oerlikon Textile GmbH & Co. KG.
    Inventors: Iris Biermann, Wolfgang Doerner, Christoph Haase, Lorenz Kreitzen, Ralf Siewert
  • Patent number: 7424799
    Abstract: Service trolley for open-end spinning machines equipped for the depositing of the final thread reserve on the exhausted bobbin comprising a thread-guide with a horizontal worm-screw, equipped with a cantilever supporting arm which allows its positioning at different levels and also its axial movement, activated in controlled clockwise/anticlockwise rotation driven by a motor, thus determining both the level and axial coordinate to which the thread is brought and wound onto the tube.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: September 16, 2008
    Assignee: Savio Machines Tessili S.p.A.
    Inventors: Roberto Badiali, Vittorio Colussi, Donato Castellarin
  • Patent number: 7377094
    Abstract: An open end rotor spinning machine with plural workstations each having a yarn spinning device, a yarn take-off mechanism loaded by a reversibly driven single drive and a winding device for producing a cross-wound bobbin. The spinning device has a spinning rotor, a fiber band opening roller and a single motor-driven fiber band feed cylinder. Each workstation (2) has a mechanism (10) for cutting to length a yarn (30) retrieved from the bobbin (22), a yarn storage mechanism (37) and a drive mechanism (7) for lifting the bobbin (22) from its drive roller (23). During the piecing process, a manually activatable control mechanism (9) activates the drive (19) of the yarn take-off mechanism (18), the drive (15) of the fiber band draw-in cylinder (14) and the drive mechanism (7) to lift the bobbin (22) according to a predetermined piecing program.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: May 27, 2008
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Hans Grecksch, Heinz-Josef Peuker, Michael Mohr
  • Patent number: 7146792
    Abstract: Service trolley for open-end spinning machines equipped with members dedicated to the operations in the intervention cycles and managed by the trolley's own control unit in which each member is independent from the others, being equipped with independent actuation controlled by sensors for the various steps of the intervention cycles.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: December 12, 2006
    Assignee: Savio Macchine Tessili S.p.A
    Inventors: Roberto Badiali, Vittorio Colussi, Donato Castellarin
  • Patent number: 7082746
    Abstract: For the piecing of a yarn in an spinning device, various computation formulas are stored in a control device into which calculated values as well as special data converted into numerical values relating in particular to the fiber material, the yarn and the spinning element are first entered to compute and select settings for operations relevant to the piecing process. A feeding device feeding a fiber sliver to the spinning device is first brought to a high pre-feeding speed by means of such pre-programmed values and converted data. From this pre-feeding speed, the feeding speed is greatly decelerated in steps to its piecing feeding speed in coordination with the release of the yarn to be fed back into the spinning element.
    Type: Grant
    Filed: June 17, 2004
    Date of Patent: August 1, 2006
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Sebastian Brandl, Frank Baier, Marc Schnell
  • Patent number: 7036300
    Abstract: A procedure and apparatus for start-up spinning of a thread in an open-end spinning apparatus is provided. A first and second auxiliary roll-pair are presentable within a thread course during start up spinning. A source of a suction air stream within the spinning apparatus is positioned below the first and second roll-pairs. The source of suction air stream creates a suction flow of air to induce the thread end into the spinning apparatus for start up spinning. A control center is in communication with the first and second roll-pairs, so that the control center controls them. A thread storage unit is positioned between the first and second roll-pairs proximal to the course of the thread. The thread storage unit is in communication with the control center so that the thread storage unit is activated to store and release the thread during start up spinning.
    Type: Grant
    Filed: December 19, 2003
    Date of Patent: May 2, 2006
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Sebastian Brandl, Frank Baier
  • Patent number: 7000373
    Abstract: Introducing/removing device of the end of the thread for an automatic service trolley for spinning units of open-end spinning machines comprising a moving structure, capable of taking a gripping member into various working positions and equipped with a gripping member consisting of a pair of parallel motorised rollers pressed against each other according to their generatrices, equipped with actuation in commanded and controlled rotation in the two directions, to introduce and re-extract the end of the thread in the rotor.
    Type: Grant
    Filed: October 13, 2004
    Date of Patent: February 21, 2006
    Assignee: Savio Macchine Tessili S.p.A.
    Inventors: Roberto Badiali, Vittorio Colussi, Donato Castellarin
  • Patent number: 6971226
    Abstract: In the case of a procedure for preparing a piecing process in an open-end rotor spinning aggregate it is provided that a thread end, which is to be pieced in a fiber ring located in a spinning rotor, is first cross-cut, thinned-out and moistened. The dampening takes place subsequent to the thread being thinned-out, in that the thread end slides over a wetting surface.
    Type: Grant
    Filed: June 2, 2004
    Date of Patent: December 6, 2005
    Assignee: Spindelfabrik Suessen Schurr Stahlecker & Grill GmbH
    Inventor: Bernhard Boehnke
  • Patent number: 6959532
    Abstract: The invention concerns a start of spinning or the method of piecing for spinning positions of air spinning frames, which, during a spinning process, produce a thread from a longitudinal fiber structure and which, for this, comprise a fineness influencing unit with parts drivable at the inlet side and part drivable at the outlet side with clamping points, a means for the air twist generation and a means for the thread take-off, whereby, after an interruption of the spinning process, the resumption of the production of the thread comprises the following steps. In particular, the method does provide for,that the start-up of the part of the drafting unit, driven at the outlet side, takes place with a subsequent time coordinated and delayed start-up of the part driven at the inlet side, in such a manner that the end portions of the torn longitudinal fiber structure and of the thread end overlap and pass, in overlapping condition, the clamping point of the part driven at the outlet side.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: November 1, 2005
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Olivier Wüst, Herbert Stalder
  • Patent number: 6865874
    Abstract: A method and device for restarting a spinning operation at work stations (2) of an open-end spinning machine (1) after replacement of a cheese (8) with an empty tube by a traveling service unit (16) comprising an auxiliary yarn supply device (21). Each work station comprises a yarn spinning device (3) and a cheese winding device (4) with a creel (9). The auxiliary yarn supply device (21) delivers a starting portion of an auxiliary yarn (24) to a suction nozzle (14), which transfers the auxiliary yarn (24) to a spinning start member (20), after which the suction nozzle (14) pivots to re-take the auxiliary yarn (24) between the supply device (21) and the spinning start member (20) and removes the auxiliary yarn (24) after restarting the spinning operation, whereupon the yarn (7) is brought to the creel (9) of the work station (2).
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: March 15, 2005
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Paul Straaten
  • Patent number: 6843050
    Abstract: A yarn false twist texturing machine for texturing multifilament synthetic yarns (4), wherein a heating device and a false twist unit are arranged within a false twist zone. An aftertreatment zone accommodates a second heating device and a countertwist device. The countertwist device is used to remove any residual twist that is left in the yarn by the false twist unit. To be able to perform a selective treatment by the countertwist device, a first embodiment provides for a twist imparting member yarn guide means for guiding the yarn (4) and being adapted for reciprocal movement between an idle position for not treating the yarn (4) or for threading it and an operating position for treating the yarn (4). In a second embodiment, the countertwist device comprises a movable twist imparting member (28, 29), which is adapted for reciprocal movement between an idle position for not treating or for threading the yarn (4) and an operating position for treating the yarn (4) by twisting it.
    Type: Grant
    Filed: April 24, 2003
    Date of Patent: January 18, 2005
    Assignee: Saurer GmbH & Co. KG
    Inventor: Thomas Wortmann
  • Patent number: 6817169
    Abstract: A service unit for restarting a spinning operation at work stations (2) of an open-end spinning machine (1) after replacement of a cheese (8) with an empty tube in the winding device of a work station, comprises an auxiliary yarn supply device (21) and a yarn moving device (23) for fixing a new spinning yarn on the tube. The yarn moving device (23) is movable from a resting position (R) entraining the auxiliary yarn (24) to the winding device (4), and, after restarting the spinning operation, for positioning the yarn (7) connected to the auxiliary yarn (24) in a slot created by a tube plate opener (32) of the service unit between one of the tube plates (30) of the winding device (4) and an end of the tube (10). The yarn (7) is subsequently severed by a cutting device (31), and stored intermediately in a storage device (55).
    Type: Grant
    Filed: August 9, 2002
    Date of Patent: November 16, 2004
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Paul Straaten
  • Patent number: 6804945
    Abstract: An open-end rotor spinning machine having at least two identical work stations, wherein each work station comprises an open-end spinning device for producing a yarn, a winding device with a creel, a yarn cross-winding device for producing a cheese, a vacuum-chargeable, pivotably seated suction nozzle having a yarn catch element arranged thereon, a device for preparing a yarn for piecing, and a stationary yarn guide device wherein the stationary yarn guide device and the yarn catch element are cooperatively arranged for retrieving the yarn from the cheese and transferring the yarn to the open-end spinning device.
    Type: Grant
    Filed: August 8, 2002
    Date of Patent: October 19, 2004
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Paul Straaten
  • Patent number: 6761022
    Abstract: The invention relates to a method and an apparatus to monitor a yarn piecing joint on a spinning machine with a plurality of piecing stations to which a piecing robot equipped with a yarn piecing apparatus with adjustable yarn piecing speed can be presented, whereby each spinning station or the piecing robot is provided with a yarn monitoring apparatus to monitor the yarn quality. The piecing robot and the yarn monitoring apparatus of the spinning station are connected via a communication system through which the piecing parameters of the piecing robot are transmitted to the yarn monitoring apparatus.
    Type: Grant
    Filed: November 27, 2001
    Date of Patent: July 13, 2004
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventor: Martin Zipperer
  • Patent number: 6748732
    Abstract: The present invention relates to a cleaning device of a rotor spinning unit with at least one cleaning head and an extensible device to extend and retract the cleaning head. The cleaning head is replaceable and connected to the extensible device.
    Type: Grant
    Filed: January 7, 2003
    Date of Patent: June 15, 2004
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventor: Ralf Limmer
  • Publication number: 20040045270
    Abstract: The invention concerns a start of spinning or the method of piecing for spinning positions of air spinning frames, which, during a spinning process, produce a thread (11) from a longitudinal fibre structure (10′) and which, for this, comprise a finess influencing unit (28) with parts (30, 29) drivable at the inlet side and part (32) drivable at the outlet side with clamping points (11), a means for the air twist generation (3) and a means for the thread take-off, whereby, after an interruption of the spinning process, the resumption of the production of the thread comprises the following steps.
    Type: Application
    Filed: June 18, 2003
    Publication date: March 11, 2004
    Applicant: MASCHINENFABRIK RIETER AG
    Inventors: Olivier Wust, Herbert Stalder
  • Patent number: 6691501
    Abstract: In a spinning position of a spinning machine a longitudinal fibre array first is refined in a drafting process, and the refined fibre array then is subject to a twist imparting process, and is taken off the twist-imparting zone as a yarn. In case of an interruption of the spinning process, the intake into the refinement zone is stopped before the delivery from the refining zone is stopped in such a manner that the longitudinal fibre array is severed between the intake and the delivery zones forming a free front end zone. The free end of the yarn, generated by the interruption of the spinning process, is treated in such a manner that a yarn end zone is tapered and is positioned upstream from the twist imparting zone. When the spinning process is resumed, the movements of the yarn end zone and of the fibre array front end zone for imparting twist are coordinated in time sequence in such a manner that these two zones overlap as they are subject to the twist imparting process.
    Type: Grant
    Filed: December 18, 2001
    Date of Patent: February 17, 2004
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Peter Anderegg, Christian Griesshammer
  • Patent number: 6666012
    Abstract: During the pneumatic holding of a yarn spun from fibers, the intensity of the air stream holding the yarn is changed to adapt to the prevailing working conditions. Such a change in intensity of this air stream can take place here in adaptation to different work phases and/or to the character of the held yarn. In order to reduce the intensity of the air stream, a secondary air stream may be fed to it at a point which is not reached by the yarn held by the air stream, or the cross-section of a pneumatic device conveying the air stream is changed. The pneumatic device is associated with an air control device which influences the intensity of the air stream and is connected to a control device which can be adjusted or programmed to take various working conditions into account. By means of the air control device an opening can be controlled through which the line can be connected to the atmosphere surrounding it.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: December 23, 2003
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Harald Widner, Sebastian Brandl
  • Patent number: 6662542
    Abstract: In open-end spinning and in coordination with predetermined operating phases, a yarn suction pipe by means of which a yarn extending from a bobbin is to be received temporarily is brought successively into different operating planes. The yarn suction pipe is imparted a defined operational movement as a function of the operating planes occupied and in coordination with the current operating phase. The operating positions of the yarn suction pipe that can be moved into at least two operating planes are defined in such a manner that when the yarn suction pipe is in its operating position in a first operating plane, a yarn extending from the bobbin pressing on a winding roller to the yarn suction pipe crosses the traversing range of the yarn traversing guide. However, the yarn is outside the traversing range of this yarn traversing guide when the yarn suction pipe assumes its operating position in an additional operating plane.
    Type: Grant
    Filed: August 22, 2001
    Date of Patent: December 16, 2003
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Adalbert Stephan, Harald Widner
  • Patent number: 6606847
    Abstract: A method of spinning-in yarn on an operating unit of a rotor spinning machine includes steps of yarn preparation for spinning-in, steps of spinning rotor preparation for spinning-in, and final spinning-in steps. The final spinning-in steps include at least the beginning of the sliver supply to the singling-out device, leading of the fibers from the singling-out device away from the spinning rotor for a predetermined time interval, letting the spinning-in yarn end get into contact with the collecting groove of the spinning rotor, and starting of the yarn draw-off and winding. At least some final spinning-in steps are time synchronized in relation to the closing of the spinning unit thus obtaining optimum piecer quality repeatedly at all operating units of the machine.
    Type: Grant
    Filed: July 23, 2001
    Date of Patent: August 19, 2003
    Assignee: Rieter CZ A.S.
    Inventors: Josef Ludví{haeck over (c)}ek, Pavel Kousalik, Jaroslav Markl, Tomá{haeck over (s)} Tesa{haeck over (r)}
  • Publication number: 20030038206
    Abstract: An open-end rotor spinning machine having a plurality of work stations, wherein each work station comprises an open-end spinning device for manufacturing a yarn, a winding device with a creel, a yarn traversing device for producing a cheese, a pivotably supported, vacuum-chargeable suction nozzle, an individual drive for pivoting the suction nozzle between a yarn take-up position in the area of the winding device and a yarn transfer position in the area of a spinning piecing member, and a device for preparing a yarn end required for restarting spinning. Each work station comprises a winding device with a drive drum driven by a reversible individual drive for driving a cheese and with a yarn traversing device driven by an individual motor for defined placement of the yarn running up onto the cheese, a yarn withdrawal device, and a work-station computer for controlling the individual drives and individual motors.
    Type: Application
    Filed: August 8, 2002
    Publication date: February 27, 2003
    Applicant: W. Schlafhorst AG & Co.
    Inventors: Hans Grecksch, Heinz-Dieter Gobbels, Manfred LaBmann
  • Publication number: 20030038205
    Abstract: A service unit for the automatic servicing of work stations of a textile machine for manufacturing cheeses, in particular for an open-end rotor spinning machine. The service unit comprises a pneumatic auxiliary yarn supply and removal device with a pivotably supported yarn supply tube and a yarn cutting device.
    Type: Application
    Filed: August 20, 2002
    Publication date: February 27, 2003
    Applicant: W. Schlafhorst AG & Co.
    Inventor: Heinz-Josef Peuker
  • Publication number: 20030029153
    Abstract: A service unit for restarting a spinning operation at work stations (2) of an open-end spinning machine (1) after replacement of a cheese (8) with an empty tube in the winding device of a work station, comprises an auxiliary yarn supply device (21) and a yarn moving device (23) for fixing a new spinning yarn on the tube. The yarn moving device (23) is movable from a resting position (R) entraining the auxiliary yarn (24) to the winding device (4), and, after restarting the spinning operation, for positioning the yarn (7) connected to the auxiliary yarn (24) in a slot created by a tube plate opener (32) of the service unit between one of the tube plates (30) of the winding device (4) and an end of the tube (10). The yarn (7) is subsequently severed by a cutting device (31), and stored intermediately in a storage device (55).
    Type: Application
    Filed: August 9, 2002
    Publication date: February 13, 2003
    Applicant: W. Schlafhorst AG & Co.
    Inventor: Paul Straaten
  • Patent number: 6412266
    Abstract: In a spinning machine with at least one spinning station possessing a feed drum, driven by a single drive, a disintegrator, a rotor, a withdrawal roll and a spool roll, provisions have been made that the spinning station has an additional single drive respectively for the withdrawal roll and/or the spool roll and/or a paraffin roll. The speed of rotation ratio of the single drives can be preset to specified values.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: July 2, 2002
    Assignee: Rieter Ingolstadt Spinnereimaschinenbau AG
    Inventors: Anton Paweletz, Bernd Bahlmann, Erich Bock, Edmund Schuller
  • Patent number: 6363705
    Abstract: A method for spinning fibers onto the free ends of the two threads of a yarn that is produced during an integrated spinning and twisting process and a two-for-one spinning and twisting apparatus for performing the method are provided. The method includes gripping a twisted yarn, separating two threads of the twisted yarn in a manner such that the twist which was originally present in each individual thread prior to the doubling of the thread with the other thread returns to the now separated thread portion, and forming a thread loop of each separated thread portion. Each thread loop is clamped and respective portions of the two branches of the thread loop extend to a spinning rotor and the spindle hollow axle. Spinning is commenced in coordination with winding and the thread loop is dissolved as the now joined thread is drawn into the spindle hollow axle.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: April 2, 2002
    Assignee: Volkmann GmbH
    Inventor: Siegfried Brenk
  • Patent number: 6339921
    Abstract: A piecing device with an evaluation arrangement for determining parameters of an automatic piecing process at a spinning station (1) of an open-end spinning frame, wherein a control device is provided which, initially in a test phase, controls the creation of at least one test piecing without a supplementary delivery of additional fiber and the subsequent removal of the created test piecing. The evaluation device is designed for determining the length of a thinner extent of the test piecing downstream of the test piecing as viewed in the direction of yarn travel, and for the determination from the detected length of the thinner extent an amount of supplementary delivery of additional fiber required for compensating the thinner extent. A reduction of the draft which is effective during the test phase assures an interference-free checking of the test piecing. The optimization phase for piecings is shortened and leads to a more accurate result when determining the supplementary delivery of additional fiber.
    Type: Grant
    Filed: November 20, 2000
    Date of Patent: January 22, 2002
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Manfred Lassmann, Heribert Mertens