EP0197442B1 - Open-end spinning machine - Google Patents

Description

The present invention relates to an open-end rotor spinning machine with a large number of spinning positions located next to one another, each with a spinning rotor, which is arranged in a housing located in a machine-side receptacle and has a drive axis extending transversely to the machine longitudinal direction, by means of which it drives from a drive belt extending in the machine longitudinal direction is driven, wherein the drive axle is mounted in the Zwikkel a support disc bearing. A device of this type is known from DE-OS-2515783.

The spinning rotor rotates at high speeds, so that its bearing is subject to relatively high wear and must therefore be replaced from time to time. This wear occurs more often when there is an imbalance in the spinning rotor.

For this purpose, the housing accommodating the spinning rotor is removed in order to make the support disk bearing accessible and then also to be able to remove it. When removing and installing the support disc bearing, there is a risk that the support discs will still turn or come to rest against the drive belt and be driven positively. This harbors a risk of injury for the operator, so that the entire machine must always be shut down for safety reasons for the individual removal and installation of a housing.

The present invention is therefore based on the object of avoiding these disadvantages in a generic open-end spinning machine and of creating a simple device in which the rotor bearing can be exchanged safely while the machine is running.

This object is achieved in that the support disc bearing is supported by the housing receiving the spinning rotor, which is mounted on a pivot axis and can be pivoted away from the drive belt at least to such an extent that the housing can be removed from the machine-side receptacle. By pivoting the housing, the support disk bearing is lowered so far under the drive belt or raised above the drive belt that the support disks come free from the drive belt and can be removed from the receptacle under the drive belt or over the drive belt. This can be done by a rectilinear or curved movement of the housing with the support disc bearing attached to it or by continuing the initially initiated pivoting movement, which can be released from the receptacle by releasing a lock or screw connection, etc.

It is possible to store and install or remove the rotor housing independently of a second housing which receives the delivery element and the opening element. On the other hand, windings can form both on the delivery element and on the opening element, which lead to damage thereof. The same can be the case if the spinning device is operated improperly. In the event of such malfunctions, it is also necessary to replace the damaged parts. In order to be able to safely replace the rotating spinning elements of a spinning device while the machine is running, according to a further feature of the invention, the housing receiving the drive axles with the drive whorls or drive wheels, which accommodates both the opening and the spinning elements, is a whole around the pivot axis from it can be swung out on the machine side. This can also be carried out according to the invention in such a way that the second housing is connected to the rotor housing and can be pivoted together with the latter.

In order to be able to pivot the housing accommodating the spinning rotor and the parts attached to it out of the machine-side receptacle, for example in order to make the support disk bearing accessible for maintenance purposes etc. without removing the housing from the machine, it can be provided in a further embodiment of the invention that the machine parts, which are stationary with respect to the pivotable housing and the parts attached to it and which are located in the pivoting range of the pivotable parts, have a minimum distance from the pivot axis which is greater than the maximum distance of the parts to be pivoted past these machine parts. In this way it is ensured that the housing with all parts carried by it can be swiveled out of the machine frame unimpeded by drive means, brakes, etc., so that the drive axle and the support disk bearing can be checked by eye. The pivoting movement of the housing separates the drive axle from its drive belt and removes it so far that during the subsequent expansion, it is also inadvertently impossible to temporarily drive the rotatably mounted elements in the housing. The control of the elements attached to the housing can thus be carried out without the operator being at risk even when the machine is running. In addition, while the machine is running, both the complete housing accommodating the spinning rotor and parts thereof can be removed or installed or exchanged, so that the other spinning positions can continue to operate undisturbed.

In a further advantageous embodiment of the subject matter of the invention, with delivery and dissolving elements arranged at approximately the same distance from the swivel axis, the maximum distance of a drive axis of the dissolving element from the swivel axis is at least as large as the minimum distance of the drive means of the delivery element from the swivel axis and that Maximum distance of this drive axis from one between the pivot axis and the drive means imaginary vertical plane is smaller than the minimum distance of these drive means from this plane. In this case, too, the housing can be pivoted for the purpose of inspection, maintenance or replacement without any risk to the operator.

According to a structurally simple embodiment, the drive means of at least one of the rotating elements are arranged in a channel-like covering which extends over a plurality of spinning stations located next to one another and which carries the pivot axes of the housings of these spinning stations and one longitudinal side of which is covered by these housings. This channel enables a compact and low-noise design of the device according to the invention.

In such an embodiment of the subject matter of the invention, the channel-like covering preferably ends on its side facing away from the pivot axis at a minimum distance that is greater than the maximum distance of the drive axis and / or the support disk bearing from the pivot axis. For the purposes of the present invention, the term “bearing” also includes any lubrication devices for such a bearing. Advantageously, the side of the channel-like covering, which faces the drive means for the opening and for the delivery elements, ends between these drive means and is designed as a holder for the drive means for the opening and / or delivery elements.

The subject of the invention can also be used in connection with a dirt separating device. In order not to have to disconnect and later to reconnect connecting lines between the housing and a dirt removal device when the housing is pivoted, according to a particularly advantageous embodiment, the invention provides that the housing, which is mounted with its upper end receiving the spinning element on the pivot axis, has on its underside a dirt separating opening leading away from the opening element with guide walls extending parallel to the pivot axis, the maximum distance and the maximum distance of the drive axis of the delivery or opening elements from the pivot axis are at least as large, and that below the housing a dirt removal belt in an open top Guide channel is guided, the side walls extend in the direction of the guide walls and the minimum distance from the pivot axis is greater than the maximum distance of the side walls from the pivot axis. The side walls of the guide channel do not hinder pivoting movements of the housing in this way, but nevertheless reach up to the immediate vicinity of the guide walls of the dirt separation opening. As a result, the separated dirt arrives safely on the dirt removal belt without the risk of the spinning machine flying away.

In an expedient embodiment of the subject matter of the invention, the guide channel is fastened to the channel-like envelopes carrying the housings of a plurality of spinning stations located next to one another.

It is easier to check the drive axles and their bearings the more they are apart. In order to achieve a compact arrangement of the driven elements and the shortest possible fiber feed channel that gently guides the fibers, the drive axles of the delivery element and the disengagement element designed as an opening roller have such an inclination with respect to the drive axis of the spinning rotor and the opening roller is arranged in this way relative to the spinning rotor that the fiber feed channel leading from the opening roller to the spinning rotor is arranged and formed symmetrically to the central radial plane through the opening roller.

It is customary to provide a housing accommodating a spinning rotor with a pivotable cover and to provide a stationary brake linkage which can be brought into its braking position by pivoting the cover. In order to enable that, on the one hand, the pivoting of the cover closing the housing of one or more of the rotating elements of a spinning station can be stopped, but that this is also possible when the cover is in the closed position, the brake linkage preferably has one regardless of the position of the cover actuatable control arm. In this way, a spinning station for cleaning the spinning rotor and / or for piecing manually or automatically, e.g. B. be controlled from a piecing car with the cover closed.

In order to prevent the housing from swiveling unintentionally, a lock is provided to secure the housing in its operating position and is only accessible after the cover has been swiveled away.

In order to have both hands free for inspection and maintenance work, a locking device securing the housing in its maintenance position is advantageously provided in a further embodiment of the subject matter of the invention.

Expediently, a valve that can be controlled as a function of the pivoting position of the housing can also be provided in the vacuum line to the housing. In this way it is inevitably ensured that no loss of vacuum can occur at this spinning point when the housing is pivoted or removed.

The present invention enables the driven elements of each spinning station to be checked in a simple and safe manner without the entire spinning machine having to be shut down to ensure the safety of the operator. This safety for the operator is also given when installing or removing a housing. With this simplicity the construction and this safety for the operator is accompanied by a higher production during this inspection and maintenance phase, since the neighboring spinning stations can continue to work normally without affecting the spinning station to be checked or serviced.

The invention is explained in more detail below using several exemplary embodiments.

• Fig. 1 im Schema eine erste Ausbildung einer erfindungsgemäß ausgebildeten Spinnstelle im Schnitt;
• Fig. 2 im Schema eine zweite Ausbildung einer erfindungsgemäß ausgebildeten Spinnstelle im Schnitt;
• Fig. 3 im Schnitt ein Ausführungsbeispiel der in Fig. 1 schematisch gezeigten Ausbildung des Erfindungsgegenstandes;
• Fig. 4 im Schnitt eine Abwandlung der in Fig. 3 gezeigten Vorrichtung in Verbindung mit einer Schmutzabscheidevorrichtung;
• Fig. 5 in perspektivischer Ansicht eine weitere Abwandlung einer erfindungsgemäß ausgebildeten Spinnstelle;
• Fig. 6 ein Detail der in Fig. 5 gezeigten Vorrichtung, und
• Fig. 7 und 8 eine abgewandelte Ausführung der erfinderischen Vorrichtung im Schnitt in ihrer Spinn- bzw. in ihrer Wartungsstellung.

Show it:

• Figure 1 in the scheme a first embodiment of a spinning station designed according to the invention in section.
• 2 shows a second embodiment of a spinning station designed according to the invention in section in the diagram;
• 3 shows in section an embodiment of the embodiment of the subject of the invention shown schematically in FIG. 1;
• 4 shows in section a modification of the device shown in FIG. 3 in connection with a dirt separating device;
• 5 is a perspective view of a further modification of a spinning station designed according to the invention;
• Fig. 6 shows a detail of the device shown in Fig. 5, and
• 7 and 8 a modified embodiment of the inventive device in section in its spinning or in its maintenance position.

The principle of the invention is first explained with reference to FIG. 1. As can be seen from this, each spinning station has an individual housing 1 which is pivotally mounted on a pivot axis 10 at its upper end. The pivot axis 10 is mounted in a holder 12 carried by the machine frame 11 and extends in the machine longitudinal direction.

The housing 1 accommodates a delivery device 2, an opening device 3 and a spinning rotor 40. Of the delivery device 2, only one delivery element designed as a delivery roller 20 is shown in FIG. 1, while the opening device 3 shown has an opening element designed as an opening roller 30.

A fiber feed channel 31 extends from the opening roller 30 into the interior of the spinning rotor 40. In addition, a thread draw-off tube 41 carried by a cover 5 leads out of the housing from the interior of the spinning rotor 40.

The delivery roller 20 is driven by a drive shaft 21 which extends in the longitudinal direction of the machine via a plurality of spinning stations located next to one another and which carries a worm wheel 22 with each spinning station, with which a worm wheel 23 is in engagement. This worm wheel 23 is located on the end of a drive shaft 24, on the other end of which the delivery roller 20 is mounted.

The opening roller 30 is located on the end of a drive shaft 32, the other end of which rests against a drive belt 33 in its operating position. The spinning rotor 40 is also carried by a drive axle 42, the free end of which rests against a drive belt 43 in its operating position.

The spinning rotor 40 is mounted in the gusset of a support disk bearing 44 which, according to the exemplary embodiment shown in FIG. 1, has two pairs of support disks 440 and 441. The support disk bearing 44 is attached to the rear of the housing 1 and can therefore be pivoted together with the latter.

The spinning machine, of which the structure of a spinning station has been described above, operates in a conventional manner. A sliver (not shown) is fed to the opening roller 30 with the aid of the delivery device 2, broken up into individual fibers and fed in this form through the fiber feed channel 31 to the collecting groove of the spinning rotor 40 and deposited there in the form of a fiber ring. A thread produced in the spinning rotor 40 is withdrawn from the spinning rotor 40 through the thread draw-off tube 41 with the fiber ring being continuously integrated and wound on a spool (not shown).

As shown in FIG. 1, the drive axles 24, 32 and 42 extend transversely to the longitudinal direction of the machine and lie against their drive means (worm wheel 22, drive belt 33 and drive belt 43) at different distances from the pivot axis 10.

The housing 1 is fixed in its spinning position in a manner not shown, for example with the aid of screws. If the support disc bearing is now to be made accessible for maintenance, replacement, etc., the fixing of the housing 1 is released and this housing 1 is pivoted in the direction of the arrow P. The drive shaft 42 is released from the drive belt 43. At the same time, the drive shaft 32 is removed from the drive belt 33 and the worm wheel 23 from the worm wheel 22 , The housing 1 is removed in a manner not shown in the direction of the arrow P ₂ from the pivot axis 10 (pivoting a bearing bracket, recess 100 according to FIG. 5 in the pivot axis 10, etc.). The support disk bearing 44 is pulled under the drive belt 43. Now the support disc bearing 44 can be supplied with new oil or serviced in some other way. Maintenance of the delivery roller 20 and the opening roller 30 and their bearings is also possible. The neighboring spinning positions are in no way affected by this removal and a later reinstallation of the housing 1 and continue to run undisturbed. The cover 5 of the housing 1 is closed during installation and removal. The operator thus comes into contact with all the elements mounted on and in it and with none of the drive means during the installation and removal of the housing 1, and is therefore at no time endangered by these elements or by the elements driven by them.

Fig. 1 shows an embodiment of the device described, in which the supporting disk La ger 44 can be made accessible only by swiveling out of the machine, with the housing 1 also being able to be removed from the machine if necessary.

In order to prevent the drive axles 24, 32 and 42 from coming into contact with any of these drive means (worm wheel 22, drive belts 33 and 43), despite the different distance between the drive means from the pivot axis 10 of the housing 1, that are located Support disc bearings 44 and the drive axles 24, 32 and 42 and the drive means in the embodiment shown in a fixed arrangement to each other. Thus, the maximum distance A of the drive axis 42 of the spinning rotor 40 and its support disk bearing 44 closest to the pivot axis 10 is smaller than the minimum distance of the drive means not assigned to the spinning rotor 40 from the pivot axis 10, namely as the minimum distance B of the drive belt 33 the minimum distance C of the drive shaft 21 from this pivot axis 10.

In the exemplary embodiment shown, the maximum distance D of the drive axis 32 of the opening roller 30 from the pivot axis 10 is greater than the minimum distance C of the worm wheel 22 on the drive shaft 21 thereof. Instead, however, the drive axles 32 and 24 are substantially equidistant from the pivot axis 10. In addition, the maximum distance E of the drive axis 32 from an imaginary vertical plane V between the pivot axis 10 and the drive means (worm wheel 22, drive belts 33 and 43) is smaller than the minimum distance F of the worm wheel 22 from this imaginary plane V.

By observing the above-mentioned distances, it is achieved that the housing 1 with deo-rotatable elements (delivery device 2, opening device 3 and spinning element 4) can be pivoted out of the machine about the pivot axis 10 without the drive means (worm wheel 22 and drive belt 33 and 43) are a hindrance here. As a result, in particular the support disk bearing 44 is accessible.

These dimensions are to be observed not only with regard to the drive means arranged independently of the housing 1 in the machine, but also with respect to other elements independent of the housing 1, provided that they are located on the side of the drive axes 42, 32 and 24 facing away from the pivot axis 10. In this way it is ensured that the pivoting movement of the housing 1 is not affected by these elements. Such an element can e.g. B. be a brake that works with one of the driven elements. This can also be a support roller 61 or 63 (FIG. 3) for one of the drive belts 43 and 33.

In a modified embodiment shown in FIG. 2, the arrangement of the rotatable elements (spinning rotor 40, opening device 3 and delivery device 2) in the housing 1 is unchanged from that according to FIG. 1, but the housing is supported at its lower end on the pivot axis 10 . The pivot axis 10 is thus located at the end of the housing 1 facing away from the spinning rotor 40. In this exemplary embodiment, the maximum distance G of the worm wheel 23 on the drive axis 24 arranged closest to the pivot axis 10 is smaller than the minimum distances H and K of the pivot axis 10 Drive belts 33 and 43 not assigned to this drive axle 24. In addition, the maximum distance I of the drive axle 32 from the swivel axle 10 is smaller than the minimum distance K of the drive belt 43 from this swivel axle 10. Here too, the housing 1 can be swiveled freely to the operating side (arrow P, ), the operating side being arranged to the right of the imaginary vertical plane V in both FIG. 1 and FIG. 2.

In the embodiments shown in FIGS. 1 and 2, the drive axles 32 and 42 have each applied directly to their drive belts 33 and 43. In a departure from the embodiments shown, one or both of the drive axles 32 and 42 can carry a swivel with which this drive axle (s) 32 and / or 42 bears against the drive belt 33 and / or 43. The specified proportions naturally relate to the whorl if its distance from the pivot axis 10 is greater than the distance from the drive end of the drive axis 32 or 42 thereof.

Further modifications are possible by exchanging features with one another or by replacing them with equivalents and combinations thereof. It is also conceivable to arrange the delivery device 2 and the opening device 3 in the upper part and the spinning rotor 40 in the lower part of the housing 1 if the material flow, in contrast to the exemplary embodiments shown, is from top to bottom.

Fig. 3 shows an embodiment of the device shown schematically in Fig. 1. Care is taken to ensure that the maximum distance A of the support disk bearing 44 fastened to the housing 1 for the drive axis 42 of the spinning rotor 40 from the pivot axis 10 is smaller than the minimum distance B of the drive means for the opening device 3 and the delivery device 2 (FIG. 11.

As shown in FIG. 3, the drive means (drive belt 43) are arranged in a channel-like casing 6, which extends over a large number of spinning stations located next to one another. The cover 6 carries between the drive axes 42 of the spinning rotors 40 adjacent spinning stations a holder 60 for support rollers 61 for the drive belt 43. Even with an arrangement of the pivot axis 10 according to FIG. 2, the holder 60 and support roller 61 are thus laterally offset outside the pivot range of the with the housing 1 swiveling parts.

The holders 12 for the pivot axes 10 of the housing 1 of the individual spinning stations extending in the machine longitudinal direction are also attached to the casing 6. On the operator side, the channel-like covering 6 is essentially covered by the housing 1 of the adjacent spinning stations.

In the exemplary embodiment shown, the lower side 62 of the channel-like covering 6 faces the drive means (drive belt 33 and drive shaft 21 with worm wheel 22) of the opening device 3 and the delivery device 2 and ends between these drive means. The minimum distance L of this side 62 from the pivot axis 10 is greater than the maximum distance A of the drive axis 42 of the support disk bearing 44 for the spinning rotor 40 from this pivot axis 10. Thus, the housing 1 can be pivoted out of the casing 6 unhindered by the side 62.

The channel side 62 is designed as a holder for support rollers 63 for the drive belt 33 of the opening roller 30. These support rollers 63 are located between the drive axles 32 of adjacent spinning positions and are therefore generally outside the swivel range of the drive axle 42 and the support disk bearing 44 for the spinning rotor 40. Otherwise, it must be provided that the minimum distance B (FIG. 1) of these support rollers 63 as well that of the drive belt 33 is greater than the maximum distance A of the drive axle 42 and the support disk bearing 44.

According to the device shown in Fig. 3, in contrast to the embodiments shown in Figs. 1 and 2, the fiber feed channel 31 is formed symmetrically to the central radial plane R through the opening roller. This has particular advantages for fiber transport. In order that this formation of the fiber feed channel 31 is made possible, the drive axes 24 and 32 of the delivery device 2 and the opening device 3 are correspondingly inclined with respect to the drive axis 42 of the spinning element 4. As clearly shown in FIG. 3, the delivery device 2 and the opening device 3 are in this way close to the spinning rotor 40, so that the transport path of the individual fibers is short. On the other hand, however, the drive axles 24 and 32 are relatively far away from the drive axle 42 with its bearing 44, which considerably simplifies the inspection and maintenance of these parts.

Fig. 4 shows a further modification of the device described. The housing 1, which accommodates both the spinning rotor 40 and the delivery device 2 and the opening device 3, as in the embodiments shown in FIGS. 1 to 3, has on its underside a dirt separating opening 7 leading away from the opening roller 30, which is divided into two Longitudinal machine direction extending guide walls 70 and 71 is shielded. The maximum distance M of these guide walls 70 and 71 from the pivot axis 10 is at least as large as the maximum distance M of the drive axis 24 and the worm wheel 23 seated on it from the pivot axis 10.

The channel-like sheathing 6, which in this exemplary embodiment receives the drive means (drive shaft 21 and drive belts 33 and 43) of all elements rotatably mounted in the housing 1 (delivery roller 20, opening roller 30, spinning rotor 40) extends to below the housing 1 and carries one Guide channel 72 open at the top. The two runs of a dirt removal belt 75 are guided in this guide channel 72. The guide channel 72 is delimited by two side walls 73 and 74 which extend in the longitudinal direction of the machine and which extend in the vicinity of the guide walls 70 and 71. The minimum distance N of these side walls 73 and 74 from the pivot axis 10 is, however, slightly greater than the maximum distance M of the guide walls 70 and 71 and the worm wheel 23 on the drive axis 24 from this pivot axis 10. In this way it is ensured during production that the on the opening roller 30 discharged dirt is safely guided to the dirt removal belt 75, but on the other hand a pivoting of the housing 1 with the support disk bearing 44 is not impaired for control, maintenance or replacement purposes.

5 and 6, the preferred embodiment of the device already described with reference to various exemplary embodiments is explained. Here, the front plate 13 of the housing 1 is pivotally mounted between two shield plates 110 of the machine frame with the aid of the pivot axis 10. A vacuum line 15 leads from the housing 1 to a collecting line (not shown) which extends in the machine longitudinal direction. In this vacuum line 15 there is a valve 16 which can be controlled as a function of the pivoting position of the housing 1. For this purpose, each holder 12 carries a limit switch 17 which is actuated by the front plate 13 in the operating position of the housing 1 and is released when the housing 1 is pivoted out of its operating position. If the housing 1 is not in its operating position, but is in its maintenance position, or is even removed, the vacuum line 15 is thus blocked by the valve 16; a loss of vacuum at this point is avoided.

The housing 1 is assigned a locking device 14, from which the arm of a lever 140 extends through an opening 131 in the front plate 13 of the housing 1 to the cover 5. The lever 140 is pivotally mounted on the housing 1 and can snap into a retainer (not shown), which is supported by the machine frame, or can be released from it.

The housing 1 is held in its operating position by the locking device 14, in which all the rotatable elements (delivery roller 20, opening roller 30 and spinning rotor 40) mounted in it are in driving connection to their drive means (worm wheel 22 and to drive belt 33 and 43). In order to reliably rule out an unintentional pivoting of the housing 1, the lever 140 is only accessible after the cover 5 has been pivoted away. Thus, before the housing 1 is pivoted, the cover 5 must first be opened.

The cover 5 is mounted on the housing 1 by means of a pivot axis 50 which extends in the machine longitudinal direction. The cover 50 carries a stop 51, by means of which it bears against the front plate 13 of the housing 1 when swiveling and thus limits the pivoting movement of the cover 5.

On the front plate 13, an angle piece 18 is provided with an opening 180, into which a locking lever 52 engages with its locking lug 520 in the closed position of the cover 5. The locking lever 52 is pivotally mounted on the cover 5 and acted upon by a spring 53. To pivot the cover 5, this latch 520 is released from the opening 180 by exerting pressure on the arm 522 of the latch lever 52 facing away from the latch 520. If the cover 5 is moved back into its closed position, the catch 520 runs with its ramp 521 onto the angle piece 18 and engages in the opening 180 by the action of the spring 53.

In order to pivot the spinning rotor 40 and possibly another rotating element, such as e.g. to stop the opening roller 30, a brake linkage 8 is provided in accordance with the exemplary embodiment shown in FIGS. 5 and 6. For this purpose, a bearing 80 is provided on the housing 1, which carries a pivot lever 81 with the aid of a bolt 800, which is articulated to a coupling member 82 at its end facing the cover 5. The coupling member 82 is articulated to the cover 5 by means of a bolt 820 in such a way that pivoting the cover 5 causes the pivoting lever 81 to pivot. This pivot lever 81 protrudes from the side of the front plate 13 facing the cover 5 through an opening 130 to the rear of the front plate 13 and, as shown in FIG. 6, carries at its free end a roller 810 which rests on a ramp-like surface 830 of a brake lever 83 lies on. The brake lever 83 extends in the machine longitudinal direction and is pivotably mounted on a stationary axis 84 independently of the housing 1. By means of a torsion spring 85, it is held in contact with a stop 832 on the underside of a roller lever 9. The stop 832 is designed as a receptacle for a brake insert (not shown) which, when braking, is brought into contact with the drive axis 42 (see FIG. 1) of the spinning rotor 40.

The ramp-like surface 830 of the brake lever 83 is part of a control arm 831, which is essentially perpendicular to the machine longitudinal direction to the operating side, i. H. to cover 5, extends.

The roller lever 9 is rotatably mounted on a stationary pivot axis 90 and carries at its one end by means of the axis 84 a roller 91 which can be brought into contact with the drive belt 43 by lifting the brake lever 83 or can be lifted off the latter. Between the spinning stations there are support rollers, not shown, in the usual way below the drive belt 43, which lift the drive belt 43 from the drive axis 42 of the spinning rotor 40 when the drive belt 43 is released by the roller 91. If, on the other hand, the roller 91 is brought back to rest on the drive belt 43, the drive belt 43 also comes into driving contact with the drive axis 42 of the spinning rotor 40.

If the cover 5 is pivoted after release by the locking lever 52, the pivot lever 81 is also pivoted via the coupling member 81. Here, the roller 810 reaches the surface 830 of the control arm 831 and lifts the stop 832 from the roller lever 9. The brake insert arranged in the stop 832 bears against the drive axis 42 of the spinning rotor 40 and thus stops it.

6 shows, the two control arms 831 and 833 are arranged between the pivot axis 90 of the roller lever 9 and the axis 84. As a result, when the cover 5 is pivoted further, with the brake lever 83 also being pivoted further, the contact surface of the brake insert on the drive axis 42 of the spinning rotor 40 becomes the new pivot axis for the brake lever 83, so that the roller 91 also rotates during this further pivoting movement of the cover 5 is lifted off the drive belt 43.

The roller lever 9 is acted upon by a torsion spring 92. This has the result that when the cover 5 is pivoted up - when the roller 810 releases the control arm 831 of the brake lever 83 again - the roller lever 9 brings the roller 91 back into contact with the drive belt 43, while the brake lever 83 engages with its stop 832 the bottom of the roller lever 9 creates. In this way, the drive axle 42 of the spinning rotor 40 is released by the brake insert of the brake lever 83 and driven again by the drive belt 43. If desired, a brake linkage for the opening roller 30 can also be provided in the same or similar manner.

Since the driven elements (spinning rotor 40, support disks 440 and 441, opening roller 30 and delivery roller 20) or at least the high-speed elements of them are stopped when the cover 5 is pivoted away, these elements already stand before the pivoting movement of the housing 1 released by the lever 140 silent, so that accidental contact with these elements is without endangering the operator.

In order not to have to hold the housing 1 without removing the housing 1 during a check or maintenance of the elements mounted in the housing 1, a second locking device 19 is assigned to the housing 1 in the embodiment shown in FIG. 5, which locks the housing 1 in the maintenance position backs up. The locking Device 19 has a latch 190 hinged to the shielding plate 110 with a latch-like recess 191 into which the front plate 13 of the housing 1 engages when it is swiveled up. In this position, the parts mounted in or on the housing 1, in particular the support disks 440 and 441 of the support disk bearing 44, can not only be checked, but also, if necessary, individually removed or installed or also exchanged for other parts. The oil level in the support disk bearing 44 can also be checked and, if necessary, corrected by refilling.

In order to be able to remove the housing 1 from the machine in a simple and rapid manner, the following precaution is taken: the pivot axis 10 is secured in the holders 12 against rotation. The front plate 13 carries two holders 132 with which it and thus the housing 1 is mounted on the pivot axis 10. The two holders 132 each have an upward-extending radial slot 133 from their bore receiving the pivot axis 10, which is narrower than the diameter of the pivot axis 10, so that the housing 1 is securely mounted on the pivot axis 10. The pivot axis 10 has two diametrically opposite recesses 100 in the region of the two holders 132 such that the pivot axis 10 has a narrow cross-sectional area in this region. The recesses 100 are arranged such that the front plate 13 is now more than 90 ° from its operating position shown in FIG. Beyond the maintenance position, must be pivoted until the holder 132 can be removed from the pivot axis 10.

As mentioned above, unlocking of the housing 1 is only possible after the cover 5 has been pivoted away, during which the rotating elements in the housing 1 are stopped. If after the unlocking of the housing 1 by means of the lever 14, the housing 1 is pivoted forward, the drive axles 24, 32 and 42 of these elements are removed from all drive means without the risk of the drive axles and support disks 440 and 441 being in any way the drive means come into contact. There is therefore no risk of injury to the operator by accidentally driven elements in the housing 1.

Despite the pivotability of the housing 1 and the actuation of brakes with the aid of a brake linkage 8, it is not necessary to do without the conventional braking independently of a movement of the housing 1. The second control arm 831 of the brake lever 83 has the task of being able to control the spinning rotor 40 independently of the pivoting of the cover 5. This can be done manually or with the aid of a maintenance and / or piecing device (not shown) which can be moved along the machine.

A rotor speed that is lower than the production speed is expedient for piecing. 6, a second drive belt 45 is therefore provided parallel to the drive belt 43, which is driven at a lower speed than the drive belt 43 and can be brought into contact with the drive axis 42 of the spinning rotor 40 by means of a roller 93. For this purpose, the roller lever 9 in the embodiment shown is designed as a balance lever which carries the roller 91 on its one arm 900 and the brake lever 83 and the roller 93 on its other arm 901. The pivot axis 90 of the roller lever 90 is arranged stationary in the machine with the aid of a bearing 94. So that the pivotability of the housing 1 is not impaired, the roller lever 9 and the brake lever 83 are located on the same side of the drive axis 42 of the spinning rotor 40 as the drive belts 43 and 45.

Since the control arm 833 of the brake lever 83 is located between the pivot axis 90 of the roller lever 9 and the axis 84, the roller 91 can be lifted off the drive belt 43 and the roller 93 for resting on the drive belt 45 by exerting pressure on the control arm 833 for piecing to be brought. Here, the drive belt 43 releases the drive axis 42 of the spinning rotor 40, while the drive belt 45 bears against this drive axis 42 and thus drives the spinning rotor 45 at a reduced speed.

The described embodiments show that by pivoting the housing 1 with the support disk bearing 44 flanged to it, the support disks 440 and 441 can be removed as far up or down from the drive belt 43 or from the drive belts 43 and 45 that the support disks 440 and 441 at one Removing the housing 1 with the drive belts 43 or with the drive belts 43 and 45 no longer come into contact. It does not matter whether the housing 1 is only pulled out to the front after detaching from the pivot axis 10 (arrow P ₂ ) or whether the pivoting movement of the housing 1 is continued (arrow P,) until the support disk bearing 44 also without releasing the housing 1 is accessible from the pivot axis 10. Also, the special design of the support disk bearing 44, for example with one or two pairs of support disks, is not of crucial importance for the device described.

The support disk bearing 44 is attached, as shown in the figures, to a housing 1 which receives both the spinning rotor 40 and the delivery device 2 and the opening device 3. 7 and 8 show, separate housings 45 and 34 can also be provided, of which the first housing 45 accommodates the spinning rotor 40 and the second housing 34 the delivery device 2 and the opening device 3. These housings 45 and 34 can be rigid with one another be connected so that all driving and driven elements of a spinning station are accessible through their joint pivoting.

7 and 8, the two housings 45 and 34 are mounted independently of one another. The (rotor) housing 45 is pivotable a pivot axis 10, while the housing 34 is pivotally mounted on the drive shaft 21 for the delivery roller 20 by means of a bracket 35 (FIG. 7). The housing 34 and the cover 5 are held in contact with the rotor housing 45 by elastic means, not shown.

If the support disk bearing 44 is to be checked or, for example, the running behavior of one of the drive belts 43 or 33 is to be checked, the rotor housing 45 is again pivoted out of the machine. To make this possible, the housing 34 with all the devices mounted in and on it (delivery device 2, opening device 3, cover 5) is first lowered so far that the rotor housing 45 can be pivoted forward. Here too, all driving and driven elements of a spinning station can be checked without endangering the operator, and depending on the intended swiveling range of the housings 45 and 34 and the element to be checked, there is even no need to remove the housings 45 and / or 34 can.

Claims (15)

1. Open-end rotor spinning machine having a plurality of spinning stations which are located next to one another each station having a spinning rotor which is arranged in a housing, located in a receptacle on the machine side, and a drive shaft which extends transversely to the machine longitudinal direction and by means of which it is driven by a drive belt extending in the machine longitudinal direction, with the drive shaft being mounted in the gusset portion of a supporting disk bearing, characterised in that the supporting disk bearing (44) is supported by the housing (1, 45) which accomodates the spinning rotor (40) and which is mounted on a swivelling axis (10) and can be swivelled at least so far away from the drive belt (43) that the housing (1, 45), together with the supporting disk bearing (44), can be removed from the receptacle (6) on the machine side.

2. Spinning machine as claimed in claim 1, having a delivery and an opening element which are arranged in a second housing, characterised in that the second housing (34) is connected to the housing (45) accomodating the spinning rotor (40) and can be swivelled together with this housing (45).

3. Spinning machine as claimed in claim 1 or 2, characterised in that the machine parts (21, 22, 33, 43, 6, 73, 74) which are in a fixed position relative to the swivellable housing (1, 34) and which are located in the swivelling area of the supporting disk bearing (44) and the drive shafts (42, 24, 32) with the drive whorls or drive wheels (23) have a minimum distance (B, C, H, K, N) from the swivelling axis, which minimum distance (B, C, H, K, N) is greater than the maximum distance (A, D, G, 1, M) of the supporting disk bearing (44) and also the drive shafts (42, 24, 32) to be swivelled past these machine parts (21, 22, 33, 43, 6, 73, 74).

4. Spinning machine as claimed in claim 2 or 3, characterised in that the maximum distance (D) of the drive shaft (32) of the opening elements (3) from the swivelling axis (10) is at least just as great as the minimum distance (C) of the drive means (21, 22) of the delivery element (2) from the swivelling axis (10), and wherein the maximum distance (E) of this drive shaft (32) from an imaginary plane (V) located between the swivelling axis (10) and the drive means (21, 22, 33, 43) is smaller than the minimum distance (F) of this means (21, 22) from this plane (V).

5. Spinning machine as claimed in any of claims 1 to 4, characterised in that the drive means (21, 22,33,43) of at least one of the rotating elements (2, 3, 4) are engaged in a channel-like jacket (6) which extends over a plurality of spinning stations located next to one another and which supports the swivelling axis (10) of the housings (1, 45) of these spinning stations and one longitudinal side of which is essentially covered by this housing (1, 45).

6. Spinning machine as claimed in any of claims 1 to 5, characterised in that the channel-like jacket (6), at its side remote from the swivelling axis (10), terminates at a minimum distance (L) from the swivelling axis (10), which minimum distance (L) is greater than the maximum distance (A) of the drive shaft (42) and/or the supporting disk bearing (44) from the swivelling axis (10).

7. Spinning machine as claimed in claim 6, characterised in that the side (62) of the channel-like jacket (6), which faces toward the drive means (21, 22, 33) for the opening and delivery elements (3,20), terminates between these drive means (21, 22, 33) and is at the same time made as a mounting element for the drive means (33, 21, 22) of the opening and/or delivery elements (3, 20).

8. Spinning machine as claimed in any of claims 1 to 7, in which the housing, with its upper end which accommodates the spinning rotor, is mounted on the swivelling axis, characterised in that the housing (1), on its lower side, has a dirt separating opening (7) which leads away from the opening element (3) and has guiding walls (70, 71 ) extending parallel to the swivelling axis (10), with the maximum distance (M) of the drive shaft of the delivery and opening elements (20, 3) from the swivelling axis (10) being at least just as great as the maximum distance (M) of the guiding walls (70, 71) therefrom, and in that a dirt removal belt (75) is guided beneath the housing (1) in an upwardly open guide channel (72), the side walls (73, 74) of which extend toward the guiding walls (70, 71) and the minimum distance (N) of which from the swivelling axis (10) is greater than the maximum distance (M) of the guiding walls (70, 71) from the swivelling axis (10).

9. Spinning machine as claimed in claim 8, characterised in that the guide channel (72) is fixed to the channel-like jacket (6) which supports the housings (1) of several spinning stations located next to one another. -

10. Spinning machine as claimed in any of claims 1 to 9, characterised in that the drive shafts (32, 24) of the delivery element (20) and the opening element (3) designed as an opening cylinder (30) have such an inclination relative to the drive shaft (42) of the spinning rotor (40) and the opening cylinder (30) is arranged relative to the spinning rotor (4) in such a way that a fiber feed channel (31) leading from the opening cylinder (30) to the spinning rotor (40) is made symmetrical to the center radial plane (R) passing through the opening cylinder (30).

11. Spinning machine as claimed in any of claims 1 to 10, having a cover which can be swivelled for the housing and having a brake linkage for one of the rotating elements, which brake linkage is mounted in a fixed position and can be brought into its braking position by swivelling the cover, characterised in that the brake linkage (8) has a control arm (833) which can be actuated independently of the position of the cover (5).

12. Spinning machine as claimed in any of claims 1 to 11, having a swivellable cover for the housing, characterised by a locking device (14) which secures the housing (1) in its operating position and is accessible only after the cover (5) has been swung out.

13. Spinning machine as claimed in any of claims 1 to 12, characterised by a locking device (19) which secures the housing (1, 45, 34) in its maintenance position.

14. Spinning machine as claimed in any of claims 1 to 13, having a vacuum line which is connected to the housing, characterised by a valve (16) in the vacuum line (15), which valve (16) can be controlled as a function of the swivelled position of the housing (1,45).

15. Open-end spinning machine having a plurality of spinning devices which are located next to one another and have one housing each which is mounted on a swivelling axis orientated in the machine longitudinal direction and accommodates in each case a rotating delivery, opening and spinning element, the drive shafts of which extend transversely to the machine longitudinal direction and, at a different distance from the swivelling axis, can be coupled with drive means extending over the length of the machine and mounted independently of the housing, characterised in that the housing (1) accommodating the drive shafts (42, 24, 32) having the drive whorls or drive wheels (23) can be swivelled as a whole about the swivelling axis (10) and out of its receptacle (11, 6) on the machine side.

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