Other

Novibra Gmbh

Fritz and Hans Stahlecker

Wilhelm Stahlecker Gmbh

Spindelfabrik Sussen, Schurr, Stahlecker & Grill Gmbh

Hans Braxmeier

Gerd Stahlecker

Hans Stahlecker

Fritz Stahlecker

Gerhard Fetzer

The spinning rotors of open-end spinning aggregates are supported on supporting discs. For the purposes of non-contact revolution counting, a front side of a supporting disc is provided with at least one permanent magnet. A signal receiver of a maintenance device selectively arrangeable at the spinning aggregates is arranged at the permanent magnet. The distance between the permanent magnet and the signal receiver is bridged by a ferromagnetic information transmitter, which is preferably arranged on a swivelling housing section of the spinning aggregate.

Arrangement for non-contact revolution counting of an open-end spinning rotor

For piecing a yarn end at a spinning station of an open-end rotor spinning machine, the previously stopped feed roller is re-activated for a short pre-feeding period. The fiber beard, which has been thinned out by the still rotating open roller, can thus renew itself. The fibers which are combed during this pre-feeding period are removed as waste when the spinning rotor is at a standstill. After completion of the pre-feeding period, the feed roller is rotated in reverse so far back until the fiber beard leaves the area of effect of the opening roller. The feed roller is activated again for the actual piecing process.

Process and apparatus for piecing a yarn end in an open-end rotor

A spindle for a spinning or twisting machine includes a step bearing sleeve which is supported in a damping tube. The damping tube is arranged, with clearance from an oil filled damping gap, free floating and radially movable in a bearing housing. The damping gap has preferably a gap width of 0.2 mm to 0.4 mm. The damping tube is provided with radial bore holes, which connect the damping gap with the area of the step bearing sleeve. In spite of even the smallest radial movements of the damping tube, a hydraulic damping as well as a hydraulic centering is possible.

Spindle for a spinning or a twisting machine

In the case of a spindle for spinning or twisting machines, two housings, separated by an annular gap, are provided, namely an outer housing, secured to a spindle rail, and an inner housing which takes up the neck bearing and the step bearing for the shaft by means of supporting parts. The inner housing is connected to a supporting portion by a flexible joining piece, which supporting portion is adjustable and clampable onto the bottom surface of the outer housing. The bottom surface takes at least approximately the shape of a ball cup, whose center point is at most 30 mm away from the upper edge of the outer housing in vertical direction.

Spindle for a spinning or twisting machine

A spindle for spinning or twisting machines comprises a rigid inner sleeve which contains a neck bearing and a step bearing for a rotatably supported shaft and which inner sleeve is accommodated in a bearing housing, the bearing housing being fixed to a spindle rail. The inner sleeve is supported against the bearing housing by two radially symmetrical acting metal springs. The spring rate of the metal spring which faces the neck bearing amounts to at least five times and at most twenty times the spring rate of the metal spring facing the step bearing. The ring space between the inner sleeve and the bearing housing is filled with a highly viscous fluid. The inner sleeve is closed off against the ring space with an oilproof seal.

In the case of a tube coupling system for a spinning or twisting spindle, in the case of which cap-type buttons project away from the outer circumference and come to rest against the interior wall of the tube, it is provided to place in the hollow spaces formed by the cap-type buttons one body respectively with a given mass. Because of the centrifugal force exercised by the massive bodies, the buttons are pressed toward the outside during the rotation of the spindle and come to rest against the interior wall of the tube. During the stoppage of the spindle, no radial force is operative in the case of the tube coupling system so that an axial displacement of the tube, particularly the removal of a full package and the fitting of a new tube, are possible without the resistance of the tube coupling system.

Tube coupling system for a spinning or twisting spindle

A spinning or twisting bearing assembly for supporting a spinning or twisting shaft is disclosed. The bearing assembly includes a spindle shaft neck bearing having roller bodies engageable with the spindle shaft at a first axial location above a step bearing assembly for supporting the bottom end of the spindle shaft. The neck bearing and step bearing assembly are disposed in a bearing housing. An outer housing is disposed to surround the bearing housing with an annular gap therebetween along a substantial length of the bearing housing. The outer housing is fixedly clamped to a spindle rail. In order to isolate sound causing vibrations from the roller bodies of the neck bearing, the bearing housing is clamped to the outer housing only at a position below the bearing housing. In use, vibrations from the roller bodies are then transmitted only indirectly to the spindle rail by way of the bearing housing, the connection of the bearing housing to the outer housing at the bottom of the bearing housing, and the out of the upper housing to the clamp bearing housing at the spindle rail.

Spinning or twisting shaft bearing assembly with vibration isolation

In the case of a spinning machine having several spinning stations for the spinning of slivers into yarns, the slivers are transported from cans to the spinning stations by transport devices which comprise transport belts. The transport belts are provided with tension inserts which are covered by the closed smooth lateral edges of the basic material of the transport belts.

Spinning machine having a belt conveyor with tension inserts

In the case of a spinning or twisting spindle having a spindle shaft which is disposed in a spindle bearing housing by means of a bolster and a step bearing, it is provided that the spindle bearing housing is surrounded by a sleeve-type housing which is connected with the bottom of the spindle bearing housing by way of an elastic connecting element which forms a point of discontinuity for the flow of structure-borne sound. In addition, it is provided that the space between the spindle bearing housing and the outer housing is filled with a viscous medium up to at least two-thirds of the height of the spindle bearing housing.

Spinning or twisting spindle having a spindle shaft

In the case of a spinning or twisting spindle to be arranged vertically, having a spindle shaft which is disposed in a spindle bearing housing by means of a step bearing and a bolster which is constructed as a roller bearing, it is provided that the rollers of the roller bearing are guided such that, at least when the spindle shaft rotates, they are aligned diagonally with respect to the axis of the spindle shaft in such a manner that they exercise an axial thrust in the direction of the step bearing on the spindle shaft.

Spinning or twisting spindle arrangement

In the case of a false-twisting nozzle for pneumatic false-twist spinning having a nozzle body formed of one or several segments, it is provided that, for the reduction of the cross-section of the outlet opening of the blow duct, at least one part of its interior wall is provided with a coating.

False-twisting nozzle for pneumatic false-twist spinning

A holding arrangement for a spindle of ring spinning or ring twisting machines. The holding arrangement includes a spindle housing which can be inserted in a receiving bore of a spindle rail and tightened by a ring flange and a nut screwed onto an external thread. The receiving bore includes a guide surface for guiding the spindle housing over only a portion of the length of the receiving bore while permitting tilting of the spindle housing in the receiving bore. Between the spindle rail and the ring flange and/or the nut, an adjusting ring is arranged which can be rotated when the nut is at least loosened. The adjusting ring is constructed as a non-uniform spacing element, by the rotating of which the relative position of the spindle housing and the spindle rail can be adjusted.

Holding arrangement for a spindle of ring spinning or ring twisting

For a spinning or twisting spindle, a holding device is provided which comprises a pin made of a spinning-elastic material which is an extension of the spindle bearing housing, the cross-section of the pin being smaller than the cross-section of the spindle bearing housing and the pin forming a point of discontinuity.

Spinning or twisting spindle

In the case of a bearing for spindles of spinning or twisting machines having a spindle bearing housing which contains a collar bearing and a step bearing for a spindle shaft which is provided with a driving wharve reaching over the collar bearing, it is provided that the collar bearing is a needle bearing, and that the driving wharve has an outside diameter of no more than 17 mm.

Bearing for spindles of spinning or twisting machines

In the case of a process for stopping and restarting a machine for pneumatic false-twist spinning, it is provided that the start-up time and the slow-down time of the main motor are controlled to preselected values, so that the switching-on and switching-off operations for air nozzles may take place as a corresponding function.

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Sussen, Germany

Hans Braxmeier