Abstract: The present invention relates to a method for operating a workstation of a cheese-producing textile machine, having a pivotably seated creel for rotatably maintaining a cheese, a bobbin drive arranged on the creel, a support roller, which during the winding operation is driven by the cheese by frictional contact, a separate yarn traversing arrangement, as well as a device for raising the creel in case of a yarn break or a defined cleaning cut. In accordance with the present invention it is provided that following a yarn break or a defined cleaning cut, the cheese, which is maintained in the creel and rotated in the unwinding direction by the bobbin drive, and the support roller are sufficiently spaced apart long enough for a suction nozzle to pick up a top yarn required for a subsequent yarn splicing process.

Abstract: A thread guide (33) for traversing and guiding a thread (5) in a rotating winding bobbin (1) for producing a cross-wound bobbin in a bobbin winder of a textile machine by controlling vibrations of the thread guide. The thread guide (33) is permanently and directly connected to at least one energy accumulator (20,21) throughout the entire traversing motion. The potential energy of the energy accumulator (20,21) increases continuously after the dead center of the traversing area. A substantially harmonious oscillating mechanical system is thus formed with the thread guide.

Abstract: A method for producing cheeses of the random winding type, wherein the workstations of an automatic cheese winder comprise a winding device with a yarn guide drum and a creel, both supported in an axially shiftable relation to each other, the creel holding the cheese in a rotatable manner and the yarn guide drum driving the cheese through frictional engagement, a ribbon disturbance device and an edge displacement device. The ribbon disturbance device causes a slippage by a defined adjustment of the bearing pressure of the cheese on the yarn guide drum. Relative movements between the yarn guide drum and the creel are initiated in the area of ribbon winding zones which counteract a stroke change caused by the ribbon disturbance during the winding of the yarn onto the cheese.

Abstract: An apparatus for controlling the tension of a traveling yarn includes a rake tensioner having stationary and displaceable yarn tensioning elements in engagement with the traveling yarn, and an electrical coil to which electrical current is supplied by a regulating device. The displaceable yam tensioning elements and the electrical coil are disposed on a common pivot lever. The electrical coil is pivotable in an air gap through which magnetic field lines pass. The tension of the traveling yarn is controlled as a function of the current supplied to the electrical coil. The present invention, thusly, improves the control of the tension of the traveling yarn in spinning or bobbin winding machines.

Abstract: In a bobbin winding machine with multiple winding heads, each having a creel associated with a torque transmitter (15) adjusted by a drive element (16) for controlling the bearing load between a bobbin (10) held in the creel and a drive drum (14), buttons (18, 19) are provided for actuation by an operator for adjusting the drive element (16) and therewith the creel (12) for adaptation to a diameter of a residual bobbin to be inserted into the creel (12).

Abstract: In the winding of cheeses with a random pattern in a bobbin winding machine, a pattern disruption is performed during a passage through a pattern zone, and the actual diameter of the cheese (10) is determined by calculating the course of the increase of the cheese diameter to be expected and adding the expected increases in diameter occurring while winding through the pattern zones to the diameter of the cheese (10) calculated prior to reaching the pattern zone from the ratio of the number of revolutions of the cheese (10) and the winding drum (13) to the diameter of the winding drum (13).

Abstract: The method for producing cheeses of the random winding type, wherein the workstations of an automatic cheese winder comprise a winding device with a yarn guide drum and a creel, both supported in an axially shiftable relation to each other, the creel holding the cheese in a rotatable manner and the yarn guide drum driving the cheese through frictional engagement, a ribbon disturbance device and an edge displacement device. The ribbon disturbance device causes a slippage by a defined adjustment of the bearing pressure of the cheese on the yarn guide drum. Relative movements between the yarn guide drum and the creel are initiated in the area of ribbon winding zones which counteract a stroke change caused by the ribbon disturbance during the winding of the yarn onto the cheese.

Abstract: A tensile yarn force sensor (7) has a measuring member (17), with which the tensile force of a traveling yarn (1) is detected as a function of the measurable pressure the yarn (1) exerts on the measuring member (17) during winding onto a cheese (2) at the work station of a multi-station textile machine, e.g., a winding machine or a combined spinning/winding machine. At preselectable intervals, a control device (11) actuates cutting of the traveling yarn (1), and triggers the performance of a zero compensation at the measuring member (17) thereby relieved of the yarn pressure, whereby external influences on the measured result are sufficiently compensated by the zero compensation, even if the chronological sequence of bobbin changes, yarn breaks or cleaning cuts triggered by imperfections in the yarn alone do not offer a sufficient opportunity for performing the required zero compensations.

Abstract: A yarn guide imparts a traversing motion to a yarn being delivered to a rotationally driven takeup bobbin in a textile yarn winding operation to create a cross-wound bobbin, or cheese. The yarn guide includes a fork-like yarn guide pivoted about a pivot axis substantially perpendicular to the axis of the takeup bobbin, and an electromagnetic mechanism for driving the guide. The electromagnetic mechanism includes an air gap, a plurality of magnets disposed along the air gap, a plurality of yokes and at least one electrical coil extending into and moveable along the air gap with the traversing yarn guide. The magnets are disposed along the air gap and generate magnetic field lines which extend in a substantially perpendicular direction through the air gap.

Abstract: In a multi-station cheese-producing textile machine (1) for rewinding delivery bobbins (4) of large volume, each work position (2) has a manipulating and transport installation (3) by which delivery bobbins (4) are transferred from a loading position (I) to a winding position (III). Each manipulating and transporting arrangement (3) has a horizontally arranged transport unit (5), and an essentially vertically arranged transport unit (6). Transport elements (9′, 9″) for receiving delivery bobbins (4, 4′, etc.) are arranged on the transport units (5, 6) in a definitively shiftable manner for transfer between one transport unit (5) and the other transport unit (6).

Abstract: An apparatus for controlling the tension of a traveling yarn includes a rake tensioner having stationary and displaceable yarn tensioning elements in engagement with the traveling yarn, and an electrical coil to which electrical current is supplied by a regulating device. The displaceable yarn tensioning elements and the electrical coil are disposed on a common pivot lever. The electrical coil is pivotable in an air gap through which magnetic field lines pass. The tension of the traveling yarn is controlled as a function of the current supplied to the electrical coil. The present invention, thusly, improves the control of the tension of the traveling yarn in spinning or bobbin winding machines.

Abstract: In a bobbin winding machine with multiple winding heads, each having a creel associated with a torque transmitter (15) adjusted by a drive element (16) for controlling the bearing load between a bobbin (10) held in the creel and a drive drum (14), means (18, 19) are provided for actuation by an operator for adjusting the drive element (16) and therewith the creel (12) for adaptation to a diameter of a residual bobbin to be inserted into the creel (12).

Abstract: In the winding of cheeses with a random pattern in a bobbin winding machine, a pattern disruption is performed during a passage through a pattern zone, and the actual diameter of the cheese (10) is determined by calculating the course of the increase of the cheese diameter to be expected and adding the expected increases in diameter occurring while winding through the pattern zones to the diameter of the cheese (10) calculated prior to reaching the pattern zone from the ratio of the number of revolutions of the cheese (10) and the winding drum (13) to the diameter of the winding drum (13).

Abstract: A method for operating a cheese-producing textile machine which produces cheeses of the “random winding” type, wherein the contact pressure of the cheese on the yarn guiding cylinder is reduced and the cheese is simultaneously charged with a braking torque for preventing pattern windings. The angular velocity w of the cheese (4) is continuously determined and processed in a control device (18) such that, when or shortly prior to reaching a so-called pattern winding zone (BWZ), the angular velocity w1 determined by the diameter d1 of the cheese (4) is reduced by means of the definite adjustment of the contact pressure with which the cheese (4) rests on the yarn guiding cylinder (3), to an angular velocity w2 which lies below the angular velocity wk of a cheese of the critical diameter dk, driven without slippage, which causes pattern winding.

Abstract: A device for controlling the creel (10) of a textile machine, which creel is pivotably seated by means of a pivot shaft to support a bobbin in frictional driven contact with a drive roller, is connected with a drive element for generating torque, e.g., a stepper motor or other device displaceable in angular steps or increments. A torque transducer is arranged between the creel and the drive element to convert the displacement of the drive element into a defined torque acting on the creel.

Abstract: In connection with a device for retracting and advancing a thread processing element in relation to a threadline it is provided that the retracting and renewed advancing is caused solely by switching on a drive motor in a direction opposite its normal operational direction of rotation. For this purpose a drive member, which is maintained fixed against relative rotation in this direction of rotation, and another drive member which can be rotated in this direction of rotation in relation to the first by way of a drive motor, are provided, which change a rotating movement into an axial movement.

Abstract: An electric circuit for the conversion of a multiplicity of commercial power voltages to a predetermined supply voltage which is independent of the respective commercial power voltage, for a device with high electrical power requirements of high output, in the range up to 40 kW, such as a bobbin winding machine. The circuit contains a rectifier stage for generating a primary intermediate circuit DC voltage, a converter stage with power switches for generating a rectangular AC voltage, a high-power transformer with a connected secondary control circuit and a control stage which triggers the power switches at zero voltage in a phase-shift mode with a variable frequency and pulse width of the rectangular AC voltage as a function of the input voltage of the rectifier stage, the transformer primary winding current and both the voltage and the current in the secondary intermediate circuit.

Abstract: In order to regulate the thread tension force of a traveling thread to a predeterminable set value, a comb tensioner with stationary thread guide elements and displaceable thread guide elements is provided, wherein the displaceable thread guide elements can be displaced by means of an electrodynamic drive mechanism which has a current-force-proportional characteristic curve and whose current supply is changed by a thread tension force regulating device, whereby the comb tensioner is employed both in a function as a thread tension force sensor and in a function as a thread tensioner.

Abstract: In a textile machine wherein a creel is pivotably supported on a pivot shaft, pivoting movements of the creel and its shaft are controlled via an electrical motor generating torque and a belt transmission unit connecting the motor to the pivot shaft. The belt transmission unit includes at least one belt wound about the drive shaft of the motor and secured to the drive shaft and to two securing points of a transmission lever fixed to the pivot shaft.

Abstract: A textile winding machine having a transport system for recirculating bobbin tube support members carrying empty bobbins, and diverting tube support members carrying partially unwound bobbins, and tubes having remnant windings of yarn thereon into diverting paths is disclosed. Each bobbin has an information transfer device which contains data pertaining to the bobbin tube on which it is carried. At least one reading device is present in the transport system for reading the information transfer device. The transport system comprises a storage path for storing tube support members; a device for diverting tube support members; and a control unit connected to the reading device for controlling the diverting device to divert tube support members which tube support members are determined by the control unit in conjunction with the reading device to the storage path to have predetermined storage path conditions.