Abstract: A godet roll for guiding, heating and conveying yarn on the circumference of a hollow-cylindrical godet roll casing. The godet roll casing is seated on a projecting support by at least one magnetic bearing having bearing pole windings, and a heating device with heating pole windings is arranged on the support. Some bearing pole windings and at least one heating pole winding are arranged together in one bearing plane, so that the bearing areas can be heated. Sensors provided for detecting the position of the godet roll casing are arranged outside of an annular chamber formed between the godet roll casing and the support in order to prevent a thermal overload of the sensors.

Abstract: A godet roll for guiding at least one yarn on the circumference of a hollow-cylindrical godet roll casing. The godet roll casing is rotatably seated on a projecting support by a bearing arrangement which includes a radially acting magnetic bearing having a plurality of bearing pole windings distributed in the circumferential direction on the support. The bearing pole windings are arranged on the support at spacings from one another circumferentially about the support and also at spacings along the support in a plurality of adjacent bearing planes in order to make possible a low-vibration guidance of the godet roll casing.

Abstract: A godet roll for guiding, heating and conveying yam on the circumference of a hollow-cylindrical godet roll casing. The godet roll casing is seated on a projecting support by at least one magnetic bearing having bearing pole windings, and a heating device with heating pole windings is arranged on the support. Some bearing pole windings and at least one heating pole winding are arranged together in one bearing plane, so that the bearing areas can be heated. Sensors provided for detecting the position of the godet roll casing are arranged outside of an annular chamber formed between the godet roll casing and the support in order to prevent a thermal overload of the sensors.

Abstract: A godet roll for guiding, heating and conveying yam on the circumference of a hollow-cylindrical godet roll casing. The godet roll casing is seated on a projecting support by at least one magnetic bearing having bearing pole windings, and a heating device with heating pole windings is arranged on the support. Some bearing pole windings and at least one heating pole winding are arranged together in one bearing plane, so that the bearing areas can be heated. Sensors provided for detecting the position of the godet roll casing are arranged outside of an annular chamber formed between the godet roll casing and the support in order to prevent a thermal overload of the sensors.

Abstract: A godet roll for guiding at least one yarn on the circumference of a hollow-cylindrical godet roll casing. The godet roll casing is rotatably seated on a projecting support by a bearing arrangement which includes a radially acting magnetic bearing having a plurality of bearing pole windings distributed in the circumferential direction on the support. The bearing pole windings are arranged on the support at spacings from one another circumferentially about the support and also at spacings along the support in a plurality of adjacent bearing planes in order to make possible a low-vibration guidance of the godet roll casing.

Abstract: The winding machine for a continuously running yarn includes a machine housing (1), a supporting arm (12) projecting from an upper part of the machine housing; two bobbin spindles (6,7) for respective bobbins sleeves (8,9); traversing units for the bobbin spindles in the supporting arm (12); a contacting roller (13); drive motors for the bobbins spindles, the contacting roller (13) and the traversing units (14) and an electronic device including an inverter for supplying the drive motors with electrical energy. The electronic device, the supporting arm, the contacting roller and the bobbins spindles are all on the same side of the machine housing. In order to provide improved cooling the flat control housing (19) for the electronic unit is separately mounted below the supporting arm (12) near the feet (2,3) of the winding machine and has the cooling ribs (20) facing the bobbins so that an air flow is produced over the cooling ribs during operation because of motion of the bobbins.

Abstract: The washing machine for a continuously running yarn includes a machine housing (1), a supporting arm (12) projecting from an upper part of the machine housing; two bobbin spindles (6,7) for respective bobbins sleeves (8,9); changing units for the bobbin spindles in the supporting arm (12); a contacting roller (13); drive motors for the bobbins spindles, the contacting roller (13) and the changing units (14) and an electronic device including a rectifier for supplying the drive motors with electrical energy. The electronic device, the supporting arm, the contacting roller and the bobbins spindles are all on the same side of the machine housing. In order to provide improved cooling the flat control housing (19) for the electronic unit is separately mounted below the supporting arm (12) near the feet (2,3) of the washing machine and has the cooling ribs (20) facing the bobbins so that an air flow is produced over the cooling ribs during operation because of motion of the bobbins.

Abstract: The spooling machine for continuously running fibers has a housing (1) with a support arm (2) extending from its upper portion; spindles (7,8) for fixing a number of bobbins (11) for the continuously running fibers; a rotatable spindle revolver (4) on which said spindles are rotatably mounted; a changing device (14) including changing units (15,16,17) corresponding in number to the fibers; respective variable speed motors (9,18) for rotatably driving the spindles (7,8) and the changing device (14) and a control unit (20) mounted on a free end of the support arm (2). In order to avoid electrical interference between the frequency converters and other electronic equipment each of the variable speed motors for the spindles and the changing device have an integrated frequency converter (9a,18a). The control unit (20) controls momentary frequencies of the frequency converters and also spooling machine operations.

Abstract: In reversible head winders two bobbin holders (3a, 3b) are alternately used. Each bobbin holder is coupled to a frequency-controllable drive (9a, 9b) associated to a frequency converter (14a, 14b). A sensing roller (6) which in operation is in contact with the surface of the bobbin (5) being formed is also equipped with a drive (10). According to the invention, each frequency converter (14a, 14b) can be switched from the drive (9a, 9b) of the associated bobbin holder (3a, 3b) to the drive (10) of the sensing roller (6). The drive of the sensing roller (6) is electrically connected to the frequency converter (14b) of the bobbin holder (3b) which is momentarily in the ready position. In this manner one can spare a frequency converter for the drive (10) of the sensing roller (6).

Abstract: A coil holder for one or several coils arranged one after the other has a main pipe having an outer periphery provided with recesses forming abutment surfaces which are wedge-shaped in an axial direction of the main pipe, a plurality of clamping elements arranged in groups axially arranged one behind the other and each distributed on a circumferential line of the main pipe so as to partially engage in the recesses in the outer periphery of the main pipe, a cylindrical displacing element surrounds the main pipe, a device for displacing the displacing element, the displacing element being formed as a displacing pipe which surrounds at least two of the groups of the clamping elements, the recesses of the main pipe being limited in a circumferential direction and having a width substantially equal to a width of the clamping elements and the displacing element includes openings through which the clamping elements are adapted to extend to hold the coil or several coils on the main pipe.

Abstract: A winding machine has at least two winding stations, each of the winding stations having a clamping device for a bobbin case, a jig motion device, and a contact roller disposed between the clamping device and the jig motion device, the jig motion device having two rotors which are driven in opposite directions and are coupled by a gear, each of the rotors having at least two wings which are arranged in a manner of propellers, rotating in a lower plane of rotation and in an upper plane of rotation, and a distance H is provided between reversing points of a traversing movement, and a plane of a traversing triangle forming an angle with the planes of rotation and the reversing points, while circles of rotation of the rotors of the winding stations overlap each other, also at the winding stations intersecting lines of the planes of rotation together with the plane of the traversing triangle rising in a direction in which the wings of the lower rotor move between the reversing points, in a same direction and at a

Abstract: A winding machine has at least two winding stations, each of the winding stations having a clamping device for a bobbin case, a jig motion device, and a contact roller disposed between the clamping device and the jig motion device, the jig motion device having two rotors which are driven in opposite directions and are coupled by a gear, each of the rotors having at least two wings which are arranged in a manner of propellers, rotating in a lower plane of rotation and in an upper plane of rotation, and a distance H is provided between reversing points of a traversing movement, and a plane of a traversing triangle forming an angle with the planes of rotation and the reversing points, while circles of rotation of the rotors of the winding stations overlap each other, also at the winding stations intersecting lines of the planes of rotation together with the plane of the traversing triangle rising in a direction in which the wings of the lower rotor move between the reversing points, in a same direction and at a

Abstract: A traversing device has a housing, two rotors supported in the housing and having axes located parallel to one another and spaced apart from one another by at most a slight distance, each of the rotors having at least two vanes arranged in the manner of a propeller so that between rotation planes of two vanes assemblies there is a short distance, a gear which couples the two rotors and drives the rotors so that one of the rotors is drivable in one direction while the other of the rotors is drivable in another opposite direction, a straightedge located in a parallel plane adjacent to two rotation planes and having a guide edge whose end points essentially correspond to turning points of a traversing motion, retaining devices and fasteners connecting the straight edge to the housing so as to permit a relative displacement, the straightedge being secured adjustably to the retaining devices that are rigidly connected to the housing so that the straightedge is directly connected with the housing, and adjusting dev

Abstract: For controlling a rotary drive of a turntable which supports at least one bobbin spindle of a bobbin winding machine, a diameter of the bobbin package is calculated by forming a quotient from a product of a speed of rotation of a contact roller and a diameter of the contact roller in respect to a speed of rotation of the bobbin spindle which supports the bobbin package, the angular position of the bobbin spindle supporting the bobbin package on its circle of rotation is determined, in which the circumference of the bobbin package is in circumferential contact with the contact roller, from the calculated diameter of the bobbin package, and the rotary drive of the turntable is controlled so that the bobbin spindle supporting the bobbin package assumes the calculated angular position on its circle of rotation.

Abstract: In blade changing devices the phase length of the oppositely rotating blades of a changing unit must be exactly determined to guarantee at the ends of the changing region a reliable thread transfer. When the arrangement is composed of several changing units, the first rotors are driven by a common drive belt in form of a flat multi-shaft transmission and the second rotors are driven by another common drive belt. Due to length deviations of the both drive belts phase errors can occur and lead to disturbances of the thread laying. In order to eliminate this, the first rotors of all changing units are driven by a single drive belt. The same drive belt drives also the second rotors through a separate intermediate transmission associated with the individual changing units. The arrangement is especially suitable for spooling machines for synthetic threads running with high speed.

Abstract: A device for winding threads on a spool, comprises a spool spindle, a guiding roller, and a changing unit including two rotors driven in opposite direction and each provided with at least two propeller-like wings, the rotors having axes located with a small distance parallel near one another, the rotors being rotatable in rotary planes in which the wings of the rotors rotate and which are spaced from one another by a small distance d, the changing unit being formed so that a thread running at end points of the changing region forms with the rotary planes an acute angle .alpha., the rotors being arranged so that an axis of one of the rotors whose wings rotate in a rotary plane spaced farther from the guiding roller is offset back in direction perpendicular to an axis of the guiding roller by the magnitude a=d.multidot.cot .alpha. relative to the axis of the other of the rollers.

Abstract: The stepwise high precision winding method includes winding the yarn on the bobbin with a reciprocating yarn changing guide in a series of steps so that an outer circumferential speed of the yarn-bobbin package is constant; reducing the yarn guide reciprocation frequency in each step from a starting frequency value to a final frequency value while keeping a winding number constant during each step so that the final frequency value is proportional to a bobbin rotation frequency in each step, and then increasing the yarn guide reciprocation frequency discontinuously to another starting frequency value and beginning a following step with the yarn guide reciprocation frequency equal to the other starting frequency value; setting the starting frequency value in each step to not more than a fixed maximum frequency; setting the final frequency value in each step to not less than a certain fixed minimum frequency; and setting the winding number in the Sth step equal to either i.sub.S -i.sub.S x/(M.sub.S +x) or i.sub.

Abstract: A machine for cutting staple fibers has a machine frame, a cutter holder supported rotatably relative to the machine frame and having an axis, a pressing member supported rotatably and having an axis of rotation which forms an obtuse angle with the axis of rotation of the cutter holder. The pressing member is coupled to the cutter holder. A drive drives the cutter holder and the pressing member. The machine has at least one synchronizing hinge having an inner hinge member and an outer hinge member for mounting the cutter holder and the pressing member.

Abstract: A thread traversing device for a winding unit comprises an endless belt provided with a plurality of drivers and having two runs which run in a traversing region approximately parallel to one another and in opposite directions and form outside the traversing region reverse loops, two pairs of guiding rollers provided for guiding the runs in the traversing region, at least two deviating rollers each provided at one side outside of the traversing region for guiding a respective one of the reverse loops. The guiding rollers of the both runs are arranged near one another so that side surfaces of the guiding rollers of one run face side surfaces of the guiding rollers of the other run. The deviating rollers are arranged skewed to the guiding rollers, and the belt in the region of the reverse loops being twisted to form a spatial belt drive.