EP0296547A1 - Method and apparatus for automatically joining a staple fibre sliver - Google Patents

Abstract

For automatic tape application on a textile machine, two staple fiber tapes (11) are inserted in two guides (13, 19). The first guide (13) thereof assumes a feed position and guides the staple fiber band (11) fed to a feed device (14). The second guide (19) holds the second staple fiber band (11) in a standby position. When the first staple fiber tape (11) to the feed device (14) is interrupted, the empty first guide (13) is brought from the feed position into a standby position. At the same time, the second guide (19) is brought into the feed position together with the staple fiber tape (11) inserted into it. A new staple fiber tape (11) is then inserted into the first guide (13), which is now in the ready position, whereupon a new tape template is made available. The two guides (13, 19) are connected to one another in terms of movement.

Description

The present invention relates to a method for automatically applying a staple fiber tape to a textile machine having a feed device, in which two staple fiber tapes are inserted in two guides, of which the first guide assumes a feed position and the first staple fiber tape fed to the feed device guides while the second Guide holds the second staple fiber band in a standby position, and in which, when the supply of the first staple fiber band to the feed device is interrupted, the second staple fiber band is brought into the feed position and fed to the feed device, and to a device for carrying out this method.

The spinning machines of this type which are known today have the disadvantage that when the original, which can be a sliver to be removed from a can or a sliver supplied by a spool, is used up, the insertion of a new package, ie a full can or a full spool, and the insertion of the ribbon or the fuse into the spinning station is time-consuming. The resulting standstill of the spinning station or the entire spinning machine considerable cost. The downtimes could be eliminated to a certain extent by the provision of operating personnel who would be ready at any time to change immediately when a pack that has become empty is displayed. However, this would also result in high costs.

A device is also already known, in which two guides are provided, of which the first guide is assigned to the staple fiber band that is fed to the feeding device and the second guide is to the staple fiber band that is in the ready position (DE-PS 922,579) . Both tours are stationary. After the staple fiber sliver fed to the feed device has run out, the front end of the second staple fiber sliver which is in the ready position is released, which thereby reaches the position which the staple fiber sliver which had meanwhile expired had previously assumed. In order to be able to later replace this second staple fiber band, which is fed to the feed device via the second guide, with a new staple fiber band, it is later necessary to remove the second staple fiber band from the second guide and to insert it in the first guide so that the new replacement band is in the first Guided tour can be inserted. This transfer of the staple fiber tape requires additional time and can also lead to disruptions in the work process.

These disadvantages are intended to be eliminated by the invention. It is therefore an object of the present invention to provide a method and a device which enable the application of a staple fiber tape in a time-saving manner.

This object is achieved in that when the supply of the first staple fiber band to the feed device is interrupted, the empty first guide is brought from the feed position to a standby position and at the same time the second guide is brought into the feed position together with the second staple fiber band inserted therein, whereupon the first one , a staple fiber tape is now reinserted in a standby position. The two guides are of equal rank and alternately fulfill the task of feeding a staple fiber band to the feed device or else to keep a staple fiber band in a standby position, these tasks being exchanged by a change of location of the two guides. Since no guidance is only used to feed or only provide a staple fiber tape, this process of the automatic tape feed can be repeated as often as desired.

A method has proven to be particularly advantageous according to which the standby position, into which the respectively empty guide for inserting a new staple fiber sliver is brought, is alternately provided on one or the other side of the feed position. This enables the use of a simple, linearly movable device which can also be used in restricted spaces.

A particularly simple design of the device is made possible if it is provided in an advantageous embodiment of the method according to the invention that the guides are moved parallel to the axis of this delivery roller.

In order to ensure that a new staple fiber band can be brought quickly into the standby position after a staple fiber band has run out, it is advantageous if it is in the standby state management located monitoring for the presence of a staple fiber band and a signal is triggered in the absence of a staple fiber band, so that a new staple fiber band can be provided in good time. It is expediently provided that this signal triggers the insertion of a new staple fiber tape in an empty guide.

Unintentionally touching the staple fiber tape in the standby position can possibly Slip something or completely out of the guide so that later automatic feeding of the staple fiber tape to the feed device is not possible. To avoid this, the staple fiber band is expediently secured in the inserted position after the insertion process has been completed.

The method according to the invention can be used in a particularly expedient and space-saving manner if a common presentation of a third staple fiber tape is provided for two adjacent feed devices, these feed devices being supplied with a new staple fiber tape at different times in such a way that when a feed device a staple fiber band is newly fed, the staple fiber band of the other feed device has already been fed about half of the feed device, that the leaking staple fiber band is replaced by a new one and is fed to the feed device on which the previously fed staple fiber band next runs out. In this way, a common reserve band is sufficient for two feed devices.

Advantageously, when the supply of a staple fiber band to the feed device is interrupted, the guides are switched over so early that the beginning of the new staple fiber band lie on the end of the outgoing staple fiber band and together with this can get into the feed device. In this way, an interruption in the work process is avoided. The beginning of the new staple fiber band is expediently not only placed on the end of the running staple fiber band, but this end is connected to the beginning of the new staple fiber band before it is introduced into the feed device. In this way, the continuity of the work process is achieved with greater certainty than when simply stacking the two staple fiber tapes.

If the staple fiber band is applied to an open-end spinning device, the new staple fiber band is expediently only applied after a thread break has occurred, whereupon after the new staple fiber band has been applied, the overlapping point of the slivers is fed to the open-end spinning device and out of it again dissipated and then re-spun. The point of overlap of the slivers, which inevitably represents an irregularity in the further processing process, is eliminated in this way, so that the spun thread consists only of sections of the slivers which have the desired cross section.

To carry out the method, the two guides are connected to one another in terms of movement in such a way that when one guide moves from a supply position into a ready position, the other guide can be brought from a ready position into a supply position. In this way, each guide alternately guides the staple fiber band in the feed position or the staple fiber band in the standby position. This enables a simple and quick application process. The two guides are expediently connected to one another not only in terms of control but in a force-fitting manner, since this ensures simultaneous adjustment of the two guides with simple mechanical means.

A standby position is preferably provided on both sides of the feed position, and one guide can be brought alternately into one standby position or the feed position and the other guide can be brought alternately into the feed position or the other standby position. A simple construction is achieved if the guides can be moved parallel to the axis of a feed roller.

According to an expedient embodiment of the subject matter of the invention, the two guides are attached to a common body that can be pivoted about an axis and can be brought alternately into a feed position or into a standby position by pivoting movements of the body about the axis. The feed and standby positions are advantageously arranged diametrically opposite one another with respect to the axis and thus the two guides can be pivoted between their feed and standby positions by pivoting movements of 180 °.

In order to achieve a particularly secure feeding of the newly created staple fiber ribbon to the feed device, it is advantageously provided that the exit point of the guide located in its feed position is located directly in front of the converging space in front of a feed roller and the distance of this guide from the feed roller by moving the body is changeable. The body is expediently retractable and can be advanced in the direction parallel to the axis. It has proven to be advantageous if the body can be tilted about a second axis perpendicular to the axis mentioned.

According to an advantageous embodiment of the device according to the invention, the guides are firmly connected to a feed trough cooperating with the feed roller and can be moved into their feed and standby positions with the feed trough. Alternatively, you can it is provided that a feed trough cooperating with the feed roller is provided in a stationary manner and is biased against this feed roller by means of an elastic means. The feed trough advantageously has guide ramps which, when the guides are changed, serve to guide the sliver starting pieces protruding from the guides and are curved downwards away from the nip point with the feed roller.

According to a further advantageous embodiment of the device according to the invention, the exit point of the guide located in its feed position is located directly in front of the converging space in front of the inlet cylinder and a pivotable pressure roller, which is biased against the latter, of a feed device forming part of a drafting arrangement.

In order to enable rapid provision of a new staple fiber ribbon as a replacement for a broken or used staple fiber ribbon, it is advantageous if a monitoring device is provided for monitoring the guide in the ready position for the presence of a staple fiber ribbon and for triggering a signal in the absence of a staple fiber ribbon. If a maintenance device which can be moved along a plurality of belt feed points is provided, the monitoring device is preferably connected to a requesting device for the maintenance device, which can have a switching device for the two guides. So that a new belt can be inserted economically into the guide in its ready position, the maintenance device advantageously has a belt application device.

It is particularly expedient so that a good connection between the old and the new staple fiber band is achieved when the new band is put on, if the guides work together with a known device for the automatic connection of a staple fiber band, for example by twisting or splicing the same.

According to an advantageous embodiment of the subject matter of the invention, the textile machine is designed as a draw frame with a plurality of belt feeds, with a first and a second guide each being provided in front of the several belt feeders which are jointly assigned to the feed device and which can alternately be brought into a feed or standby position. As a result, a new belt can be applied to each belt feeder at any time independently of the other belt feeders. The operator then has time to calmly insert a new staple fiber tape into the empty guides that are in the ready position.

According to a further advantageous embodiment of the device according to the invention, the textile machine is designed as an open-end spinning machine and has a plurality of spinning positions next to one another, each with a feed device, a first and a second guide being provided in front of each feed device, which are alternately in a feed or Ready position can be brought.

Although the invention is particularly advantageous in a draw frame and in an open-end spinning machine, it can also be used advantageously in other textile machines which process a staple fiber strip.

"Staple fiber tape" in the sense of the invention is not only to be understood as an untwisted fiber tape, but also a tape with a slight twist such as a fuse, etc.

The invention enables that when the template on the textile machine is used up, an automatic introduction of a reserve or standby belt into the spinning or processing or machining process takes place without any noticeable loss of time, so that the textile machine without noticeable loss of time, ie immediately after the intended one Automat or switch that has inserted the reserve belt can continue to work. This loss of time corresponds in the order of magnitude to the time required for the automatic removal of a thread break in the known spinning machines. For the subsequent, manual or mechanical replacement of the empty packaging, the time period, that is to say a great deal of time, is available until the spare tape introduced into the production or the spare packaging becomes empty. This is particularly valuable in automatic machines because it means that only a small number of operating personnel is required. For example, this method of working allows long, low-operator night shifts to be carried out, in which the operating personnel only have to take on monitoring functions, ie do not perceive any direct interventions in the work process.

The invention is primarily advantageous for spinning based on ring spinning machines, rotor and friction processes and air jet spinning, but can also be used in other textile machines, e.g. Stretch, find application.

• Fig. 1 im Querschnitt ein erstes Beispiel eines erfin­dungsgemäßen Spinnaggregats,
• Fig. 2 die in Fig. 1 gezeigte Vorrichtung in der Seiten­ansicht;
• Fig. 3 im Querschnitt eine weitere Ausführungsform der Erfindung;
• Fig. 4 die in Fig. 3 gezeigte Ausführungsform in der Draufsicht;
• Fig 5 im Querschnitt noch eine weitere Ausführungsform der Erfindung;
• Fig. 6 in der Vorderansicht die in Fig. 5 im Schnitt längs der Linie V-V gezeigte Vorrichtung;
• Fig. 7 in schematischer Darstellung eine Ausführungsform mit einem Streckwerk einer Ringspinnmaschine;
• Fig. 8 in der Vorderansicht in Richtung des Pfeiles A die in Fig. 7 gezeigten Führungen;
• Fig. 9 a) bis c) im Schema verschiedene Arbeitsphasen einer weite­ren Ausführungsform der erfindungsgemäßen Vorrich­tung;
• Fig. 10 im Schema noch ein anderes Ausführungsbeispiel der erfindungsgemäßen Vorrichtung zusammen mit den für die Steuerung erforderlichen Steuervorrich­tungen und -verbindungen;
• Fig. 11 im Schema einen Teil einer alternativen Steuer­vorrichtung;
• Fig. 12 im Schema eine Spinnmaschine mit einer Vielzahl nebeneinander angeordneter Spinnstellen und eine längs der Maschine verfahrbare Wartungsvorrichtung;
• Fig. 13 im Schema eine alternative Ausgestaltung der in Fig. 12 gezeigten Spinnmaschine;
• Fig. 14 im Schema eine weitere alternative Ausgestaltung einer Steuervorrichtung für den Erfindungsgegen­stand;
• Fig. 15 in der Seitenansicht einen Teil einer erfindungs­gemäß ausgebildeten Offenend-Spinnmaschine; und
• Fig. 16 in der Draufsicht eine erfindungsgemäß ausgebil­dete Strecke.

The invention is explained in more detail below with the aid of exemplary embodiments and drawings. Show it:

• 1 in cross section a first example of a spinning unit according to the invention,
• FIG. 2 shows the device shown in FIG. 1 in a side view;
• 3 shows in cross section a further embodiment of the invention;
• FIG. 4 shows the embodiment shown in FIG. 3 in plan view;
• 5 shows a cross section of yet another embodiment of the invention;
• Figure 6 is a front view of the device shown in Figure 5 in section along the line VV.
• 7 shows a schematic representation of an embodiment with a drafting arrangement of a ring spinning machine;
• Fig. 8 in the front view in the direction of arrow A the guides shown in Fig. 7;
• 9 a) to c) in the diagram, different working phases of a further embodiment of the device according to the invention;
• FIG. 10 shows yet another exemplary embodiment of the device according to the invention together with the control devices and connections required for the control; FIG.
• 11 shows in the diagram a part of an alternative control device;
• 12 shows in the diagram a spinning machine with a large number of spinning stations arranged next to one another and a maintenance device which can be moved along the machine;
• 13 shows an alternative embodiment of the spinning machine shown in FIG. 12 in the diagram;
• 14 shows a further alternative embodiment of a control device for the subject matter of the invention in the diagram;
• 15 is a side view of part of an open-end spinning machine designed according to the invention; and
• 16 is a top view of a route designed according to the invention.

1 and 2, a staple fiber band 11 forming a template is guided through a channel 12 of a guide 13. The exit point of the channel 12 is in the immediate vicinity of a feed roller 14, i.e. immediately in front of the converging space of this feed roller. This, together with a feed trough 15, serves to transport the staple fiber band 11 to a dissolving roller 16 forming a draft element. A fiber feed channel 17 serves to forward the fibers, which have been broken up by means of the roller 16, to a rotation-imparting element or spinning rotor, not shown. In this example, the guides 13 and the feed trough 15 form a structural unit.

A second guide 19 with a second channel 18 and a second feed trough 20 are also provided. A staple fiber band, not shown, which forms a further template is held in channel 18. The guide 19 with the feed trough 20 are held together with the guide 13 and the feed trough 15 by an annular body 21 and carried by a shaft 23 which can be pivoted about the axis 22. 1 and 2, the guide 13 is in the feed position and the guide 19 in the standby position. The explanation of these designations follows in the further course of the description.

Guides 13 and 19 with the feed troughs 15 and 20 are firmly connected to the shaft 23, which can perform pivoting movements through 180 °. Each of the feed organs 13, 19 alternately reaches the feed or standby position. The staple fiber band 11 is removed from a production pack or production can, not shown, and pulled through the guide 13 located in the feed position. In addition, a second, not shown, staple fiber band supplied by a standby can, not shown, serving as a standby pack, is passed through the channel 18 and held therein.

To monitor the staple fiber tape 11, i.e. A monitoring device 24 serves to determine the presence of the same and, if appropriate, to generate a signal in the absence thereof.

The guides 13, 19 with the feed troughs 15, 20 can also be displaced in the direction parallel to the axis 22, according to FIG. 1, to the left by means not shown, and can thus be retracted into the position indicated by dash-dotted lines and pushed back into the starting position drawn with solid lines .

In operation, staple fiber sliver is continuously moved between feed roller 14 and feed trough 15, which is removed from the production package and fed via guide 13 to the opening roller 16, which operates as a drafting element. The guide 13 is thus in the drawn working phase in a feed position. If the staple fiber sliver of the production package has been used up sufficiently, the monitoring element 24 supplies a signal by which in a first step the guides 13, 19 with the feed troughs 15, 20 are withdrawn in the direction parallel to the axis 22 (to the left according to FIG. 1). The shaft 23 is then pivoted through 180 ° in a second step. Finally, in a third step, the guides 13, 19 with the feed troughs 15, 20 are parallel to the axis 22 again (to the right in FIG. 1), so that their positions are now interchanged with respect to their starting positions. Thus, the guide 13 is now in a standby position and the guide 19 is in the feed position. Thus, if the production package is empty, the staple fiber band held in the channel 18 is automatically brought between the feed roller 14 and the feed trough 15 and fed to the opening roller 16. It is removed from the package, which was previously the standby can and now forms the production can after changing the guides 13, 19. This changing process takes up little time, which is of the order of the time required for the automatic removal of a thread break. The empty jug is occasionally replaced by a full jug and the beginning of the band of this full jug is passed through the channel 12 to be held therein. This full or second can now forms the ready pot. A lot of time (in the order of several hours) is available to replace the empty jug with a full one. If the second can has also become empty during the operation of the spinning machine, the described process is repeated again. The guides 13, 19 with the feed troughs 15, 20 in turn reach the positions shown in FIG. 1.

3 and 4, in which Fig. 3 is a section along the line III ... III of Fig. 4, again two guides 13, 19 are provided with the channels 12 and 18, respectively. They are made from a single piece and can be moved parallel to the axis of the feed roller 14 and to the side surfaces of a feed trough 25. The feed trough 13 is in the feed position and the guide 19 in the standby position. The guide 13 is supplied with the staple fiber band in a production pack and the guide 19 with the staple fiber band in a ready pack. The guides 13 and 19 are arranged directly and with minimal space on one side surface of the feed trough 25. The latter has two guide ramps 26, which advantageously arch downwards towards their free ends to ensure guiding of sliver ends hanging out on the exit side of the channels 12, 18.

Above the feed trough 25 there is a feed roller 14 which, together with the feed trough 25, serves to move a staple fiber strip 11, which is guided through the channel 12 and is not shown in FIG. 4, to a dissolving roller 16. By means of an elastic organ, e.g. a spring 27, the feed trough 25 is biased against the feed roller 14. As in the example of FIGS. 1 and 2, according to the example of FIGS. 3 and 4, the staple fiber band is broken up into fibers by the opening roller 16, which fibers are transported into a spinning rotor (not shown).

As soon as the staple fiber tape removed from the production package is used up in operation, ie if a corresponding monitoring device indicates the absence of such, the guides 13, 19 connected in terms of movement are moved in such a way that the guide 19 into the feed position and the guide 13 into the dashed line drawn position 35, which is a standby position for the guide 13 arrives. The staple fiber band held by the channel 18 and supplied by the standby or second can is thus detected, possibly with the aid of a conveyor device (not shown) inside the guide, and the spinning process continues after a brief interruption. Thereupon, the original production package, which is now empty, must be replaced by a new one and the sliver present in this new package must be introduced into the channel 12 and kept in it. There is again a very long period of time available to carry out these latter two steps, which is sufficient for all practical needs.

After the sliver removed from the original standby can is used up, the guides 13, 19 are in turn returned to their original position shown. After the second empty can has been replaced by a full one, the starting piece of the fiber sliver to be removed from the latter must be inserted into and held in the channel 18.

3 and 4 show, a standby position is provided on both sides of the feed position, which is alternately assumed by one of the guides 13 and 19. This enables very simple movements for the guides 13 and 19, in particular also linear movements, in particular parallel to the axis of the delivery roller 14, in order to avoid retraction or feed movements transverse to this axis. In comparison with the example of FIGS. 1 and 2 it can be seen that in the embodiment of FIGS. 3 and 4 only a longitudinal movement of the guides 13 and 19 is necessary for a band change, while in the example described first a retracting, a pivoting movement and a forward movement of the guides 13, 19 and the feed troughs 15, 20 take place.

There is the possibility, by modifying the embodiment of FIGS. 1 and 2, of eliminating the retracting movement into the position shown in broken lines and the subsequent forward movement. This is the case in an embodiment in which the feed trough 15 is separated along the surface of the guide 13 given by the straight line 28 and perpendicular to the plane of the drawing and is biased against the feed roller 14 by an elastic means (not shown) and in which the feed trough is also provided 20 along the surface given by the straight line 29 and perpendicular to the plane of the drawing is separated from the guide 19. Under these conditions, a new sliver only needs a pivoting of the guides 13 and 19 by 180 °, the retraction and forward movements are no longer necessary.

It can be seen that the embodiment of FIGS. 1 and 2 with the retracting and forward movement of the guides 13 and 19 with the feed troughs 15 and 20 has the advantage that between the guides 13 and 19 on the one hand and the feed troughs 15 and 20 on the other hand there is no gap or space in which fibers could get caught. In addition, in this embodiment, the guide to the nip point of feed roller 14 and feed trough 15 and 20, mediated by channels 12 and 18, is shorter than in the embodiment with separate, non-pivotable feed trough 15 and 20.

On the other hand, the embodiment according to FIGS. 3, 4 and the embodiment according to FIGS. 1, 2 characterized by omitting the feed trough 20 and having a non-pivoting feed trough 15 has the advantage that the feed trough 15 or 25 is always exactly the same, mutual adjustment Feed roller 14 is present. The conditions for the tape feed to the opening roller 16 thus always remain constant regardless of which of the guides 13, 19 is in the feed position. This ensures a constant thread quality. In addition, as already mentioned, the retraction movement shown in broken lines in FIG. 1 is not necessary. This means a reduction in the time required for changing the belt and a simpler construction of the spinning unit. Depending on the circumstances, one or the other embodiment will be preferred.

The example in FIGS. 5, 6 in turn has two guides 13, 19 provided with channels 12 and 18, respectively. Of these, the guide 13 is in a feed position and the guide 19 in a standby position. For the sake of clarity, only the staple fiber tape 11 carried out through the channel 12 is drawn from the staple fiber tapes, each again taken from a production and standby pack (not shown) and inserted into the channels 12 or 18. The guide 13 located in the feed position in turn forms with the feed trough 15 a structural unit. The guide 19 also forms a structural unit with a feed trough which is not visible in FIG. 5. The feed trough 15 located in the feed position works together with a feed roller 14 in order to feed fiber sliver to the opening roller 16, not shown in FIG. 6, during operation. The guides 13, 19 are located on a swivel body 30.

This body 30 is pivotable about a shaft 31 in a position shown in dash-dotted lines in FIG. 6 'for the purpose of bringing the guides 13, 19 optionally into their feed position and their ready position. The body 30 can also be tilted together with the shaft 31 about the axis of a further shaft 32 into the position 30˝ shown in broken lines in FIG. 5. The execution of swiveling movements around the axis 31 can be carried out, for example, by means of a threaded spindle, i.e. a rotating worm 33 and a worm wheel 34 driven thereby.

In the operation of the embodiment of FIGS. 5 and 6, fiber sliver is continuously moved through the feed roller 14 between it and the feed trough 15 and conveyed to the opening roller 16. When this template, which is taken from a production can not shown, is used up, a signal causes the body 30 to tilt about the axis of the shaft 32 into its position 30 seine shown in FIG. 5. Then there is a pivoting of the body 30 in its position shown in dashed lines in Fig. 6 30 ', which is caused by the driven screw 33. As a result, the guide 19, in the channel 18 of which the beginning of the sliver present in a ready pack is already inserted, moves from its ready position to its feed position. The body 30 is then tilted back into its original position about the axis of the shaft 32, as a result of which a feed trough belonging to the guide 19 interacts with the feed roller 14. During this movement, the guide 13 is moved into its standby position, shown in broken lines in FIG. 6. A new staple fiber band is thus attached to the feed roller 14.

The change described requires little time, so that the spinning process continues after a very brief interruption. On the other hand, there is a time period available to replace the original production can, which is now empty.

When the sliver of the original stand-by can has been used up, there is again a tilting around the axis of the shaft 32, a pivoting about the shaft 31 into the starting position shown in solid lines in FIG. 6, and a tilting back about the shaft 32, with the guidance 13 in turn reaches the feed position for supplying the feed roller 14.

In an analogous manner, as was carried out with the aid of FIGS. 1 and 2, it is also possible in this exemplary embodiment to separate the feed trough 15 from the body 30 and in continuous contact directly next to the feed roller 14. In this case, the tilting movements occurring around the axis of the shaft 32 are not required.

The guides 13 and 19 are always connected to one another in terms of movement so that when one guide moves from a standby position into the feed position, the other guide reaches the same or a different standby position. For this purpose, the guides can be non-positively connected to one another, possibly also integrated into a component, but it is also sufficient if such a synchronous movement is achieved in the case of guides which are independent of one another solely by corresponding control of separate drives.

So far, the application of the invention has been explained using open-end spinning. It can be seen from the following that the advantages obtained when using the invention in ring spinning machines are analogous to those in open-end spinning.

In a ring spinning arrangement according to FIGS. 7 and 8, a guide 36 is provided for a template only shown in FIG. 7, which is formed by a staple fiber ribbon or a sliver 37. The guide 36 is in its feed position. A second guide 38 is in its standby position. The guides 36, 38 are held by a carrier plate 39. Both have a channel 40 through which a template is drawn. Furthermore, drive rollers 41, 42, 43 and pressure rollers 44, 45, 46 biased against each of them are provided. The rollers 41 and 44 are rotatable about the axes 51 and 52 shown in FIG. 8. The rollers 42 and 45 serve to drive the straps 47 of a double apron drafting system. The drafting zone or drafting element shown is the pre-drafting zone between the rollers 41, 44 and 42, 45 and the main drafting zone between the rollers 42, 45 and 43, 46.

The rotation of a spindle 48 operating as a rotation-imparting element causes a twisting of the fiber material emerging from the rollers 43, 46, i.e. the emergence of a thread and a rotation of a runner 49 around the spindle 48 and thus with the formation of a balloon 50 the winding of the thread onto the spindle 48. The carrier plate 39 together with the guides 36, 38 can be displaced parallel to the axes 51, 52, whereby either the guide 36 or the guide 38 comes to lie in the feed position via the pressure roller 44.

In the operation of the spinning unit shown in FIGS. 7 and 8, existing material is drawn off from a pack of fiber sliver, not shown, formed by a spool, stretched in the drafting device 41 to 47, and the thread subsequently formed is wound onto the spindle 48. In order to keep the interruption in operation caused by the running out of a bobbin briefly in this spinning process as well, the previous exemplary embodiments are used.

A spinning unit is assigned two sliver coils, the fuse of the first coil (feed coil) being inserted into the guide 36 in the feed position and the fuse of the second coil (standby coil) into the guide 38 which is in the standby position. As soon as the supply spool is used up, analogously to the example of FIGS. 3 and 4, after a corresponding control by a signal from a monitoring organ, the guide 36 is moved into the ready position shown in phantom in FIG. 8 and at the same time the guide 38 is moved into the feed position, so that the spinning operation is restarted fully automatically. If the two guides further with an additional (not shown), known apparatus for the automatic connection of the fuses, e.g. by twisting or splicing, it can then make sense to continue the spinning operation without any interruption, provided, however, that the connecting operation has been carried out with the necessary care so that there is no thread breakage and no impermissible thick or thin spots in the yarn. For this purpose, the guides must be offset so early that the beginning of the new staple fiber band can lie on the end of the outgoing staple fiber band and can get into the feed device together with it. You then have a large amount of time to replace the sleeve of the original feed trough with a full spool.

As is known, there is often only a limited amount of space available for spinning machines for the packs (cans, spools). Placing the ready templates can therefore be difficult.

An arrangement that takes up little space is obtained in one embodiment of the present invention, in which a single standby template is provided for every two adjacent spinning units. To explain how it works Embodiment is referred to FIG. 9. This shows a spool 54 assigned to a first of two adjacent spinning units and a spool 55 assigned to the second of these adjacent spinning units. In addition, a third spool 56 forming a standby or reserve spool is provided. The fuse of the coil 54 is guided to a guide 57 and the fuse of the coil 56 to a guide 58. The guide 57 is in the feed position and the guide 58 is in its ready position. The guide 57 can be brought into a standby position 59.

The second spinning unit comprises guides 60, 61, of which the guide 60 is in its feed position and the guide 61 is in its ready position. The guide 60 can be brought into a standby position 62. The fuse of the coil 55 is attached to the guide 60. In the working phase according to FIG. 9a, no fuse is attached to the guide 61.

For the operation of the arrangement, the spool 54 is half used up at the start of the spinning process. This is indicated by the indication "1/2". The coil 55 is, as indicated by the indication "2/2", fully wound with a fuse. The coil 54 in the ready position with the ready template is fully wound and serves as a reserve coil, which is expressed by “R”.

During the spinning process, sliver strips are drawn off from the coils 54, 55 which are in the operating position. When on each of the coils 54, 55 half of the amount of sliver corresponding to a full coil is used up, the coil 54 is empty. As a result, the first spinning unit comprising the guides 57, 58 is automatically switched off and the guide 57 is moved into the ready position 59 and the guide 58 into the operating position. After resuming the spinning process, the fuse is now removed from the Coils 56 and 55 removed. The empty spool 54 is replaced by a full spool 63, which now functions as a standby pack or reserve spool. In addition, the fuse of the newly inserted coil 63 must be attached to the guide 61. After this has been carried out, the relationships shown in FIG. 9b are present.

As the spinning process continues, the bobbin 55 is used up, whereupon the second spinning unit comprising the guides 60, 61 is switched off and the guides 60, 61 are actuated. The guide 61 thus comes into the feed position and the guide 60 into the ready position 62. After the spinning process has then started again, the now empty bobbin 55 must be replaced by a full bobbin 64, which now forms a ready-to-use pack, and its fuse to the guide 57 can be applied. The resulting state is shown in Fig. 9c.

It can be seen that in the described method, a common third belt template is provided for the feeding devices of two adjacent workplaces. The two feed devices are each supplied with a new staple fiber tape at different times in such a way that when a feed device is fed with a new staple fiber tape, the staple fiber tape of the other feed device has only been processed about halfway. After the used-up ribbon has been replaced by a new ribbon, this new ribbon is delivered to the feed device on which the staple fiber ribbon next runs out. The above description shows that for this purpose the newly added pack or reserve spool is connected with every change to the ready position of the pair of guides for which a production pack is prepared which has a template corresponding to half of a full production pack.

The change of the packs shown in FIG. 9 was carried out using an example of a ring spinning machine with fuses wound into spools. It should be mentioned in this connection that the same procedure can be followed when using cans filled with fiber tapes, the packages being formed by (full, half-full or empty) cans instead of by spools.

In a spinning machine operating according to FIGS. 1 to 6, a very long period of time is available for replacing an empty package with a full package, so that even with a half as long period as is the case with the example in FIG. 9 is still a lot of time and therefore still an advantageous embodiment. This is the case because cans obviously have a large time span because of their size and because the comparatively slower ring spinning process is equivalent to an extension of the time span. Therefore, the present invention according to the embodiment of FIG. 9 still has the advantage of a reduced space requirement for the packs.

As already mentioned, the present invention serves, in particular, for the automatic insertion of a new template when the template which is in operation has been used up. However, it is of great advantage in the event of a break in the original in the spinning process. In such a case, the device according to the invention also immediately changes the guide in the ready position into the operating position in the manner described, whereupon the spinning process continues, possibly after a brief interruption.

As the above description shows, the invention can be modified in many ways, for example by exchanging features with equivalents or other combinations of features.

10 shows a development of a device according to FIGS. 3 and 4. For illustrative reasons, the distance between the guide 13 and the feed roller 14 has been drawn large. In principle, this distance can be chosen to be smaller, especially if the guide 13 carries the feed trough 15 at the same time, as is shown in FIGS. 1 and 2. In addition, it can also be provided that the distance between the guide 13 or 15 and the feed roller 14 is variable in that the guides 13 and 14 are not only displaceable parallel to the axis of the feed roller 14, but also perpendicular to it. This is indicated in Fig. 10 by the double arrows 65 shown crosswise.

10 shows, the two guides 13 and 19 are non-positively connected to one another by a connecting piece 66. A drive 86, which, as mentioned, can be moved in each of the four directions shown by the double arrows 65, is connected to this connecting piece 66 via a drive device 85, which is only indicated by dashed lines. As a result, the guides 13 and 15 can be removed from the feed roller 14 before they are moved parallel to the feed roller 14, then moved parallel to the axis of the feed roller 14 and then again approached the feed roller 14.

In the exemplary embodiment shown, the channels 12 and 18 have a plurality of conically tapering longitudinal sections 67 and 68 or 69 and 70 in the pulling direction, which make it more difficult for the sliver 11 to slide back without, however, impairing the insertion of the sliver 11.

According to FIG. 10, each guide 13 and 19 in the direction of the tape insertion side has an extension 71 or 72 with which one end of a stationary angle lever 73 or 74 cooperates. The other end of the angle lever 73 or 74 is acted upon by an elastic element, for example a compression spring 75 or 76, which is supported in a suitable manner on a stationary support 77 or 78. At this support 77 and 78 is the bearing 79 or 80 for the angle lever 73 or 74 attached. This bearing 79 or 80 each has a stop 81 or 82, which cooperates with the end of the angle lever 73 or 74 facing the compression spring 75 or 76, in order to limit its maximum swivel path caused by the compression spring 75 or 76 .

The angle lever 73 or 74 cooperates with the extension 71 or 72 of the guide 13 or 19 in the manner of a clamp in order to secure the sliver 11 in the guide 13 or 19 against unintentional slipping out or pulling out. The angle levers 73 and 74 are arranged in relation to the guides 13 and 19 in such a way that they secure the staple fiber band 11 which is in the ready position and which release the staple fiber band 11 which is in the feed position. Thus, the staple fiber band 11 fed to the feed roller 14 from a can 83 is released, while the staple fiber band coming from a can 84 and inserted into the guide 19 is clamped by the angle lever 74 and thereby secured. If the staple fiber strip 11 drawn out of the can 83 runs out, this is reported by the monitoring member 24. The monitoring element 24 supplies a signal to a control device 87 which, by correspondingly controlling the drive 86 (see double arrow 65), brings the guide 13 into the other ready position, shown in broken lines, in which the angle lever 73 bears against the extension 71 of the guide 13 . The guide 19 moves from the first standby position shown into the feed position, which is selected such that the staple fiber sliver 11 removed from the can 84 safely enters the feed area of the feed roller 14 and is fed to the opening roller 16.

The angle levers 73 and 74 are each assigned a monitoring element 88 and 89, which are actuated by the angle levers 73 and 74 when there is no staple fiber band 11 in the clamping area of the angle levers 73 and 74. If, on the other hand, a staple fiber tape is inserted in a guide (see guide 19), the angle lever is pivoted (see angle lever 74) and the associated monitoring device (see monitoring device 89) is actuated.

The actuation or non-actuation of the monitoring members 88 and 89 triggers a corresponding signal which is reported to a control device 90. In this case, the control device only takes into account the signal of the monitoring member 88 or 89 in which a guide 13 or 19 is in the ready position.

According to FIG. 10, the control device 90 is connected to the control device 87 in terms of control or, alternatively, is integrated into the control device 87. The control device 90 is connected to a tape application device 91, which is designed and operates in a known manner (see, for example, DE-OS 2,911,744).

The tape application device 91 carries an arm 92 which, when the staple fiber tape 11 is inserted into the guide 13 or 19, comes to rest against the arm of the angle lever 73 or 74 acted upon by the spring 75 or 76 and thus lifts off the monitoring element 88 or 89. At the same time, the other arm of the angle lever 73 or 74 is lifted from the extension 71 or 72 of the guide 13 or 19, so that the channel 12 or 18 of the guide 13 or 19 is released.

When the staple fiber tape 11 is inserted into the guide 13 or 19, the tape application device 91 can, if necessary, also perform a movement relative to the arm 92.

Fig. 10 shows the tape application device 91 with the arm 92 shortly after inserting the staple fiber band 11 in the guide 19. Due to the strength of the staple fiber band 11, the angle lever 74 remains pivoted so far even after release by the arm 92, which has already been somewhat retracted, that the Monitoring member 89 is not actuated again, but the inserted staple fiber band 11 is clamped by the angle lever 74.

If the guide 13 is in the ready position 13 'indicated by dashed lines in FIG. 10, this is reported to the control device 90 via the control device 87. Via the monitoring device 88, this registers the absence of the staple fiber band 11 on the guide 13. The control device 90 triggers the insertion of a new staple fiber band 11 into the empty guide 13. For this purpose, it causes, in a manner not shown, that the tape application device 91 with the arm 92 comes into the position 91 or 92 'and picks up staple fiber tape from a jug (not shown) which has now been provided and in which the guide 13 in the ready position 13' is inserted . In this way, by pivoting the angle lever 73 through the arm 92, the channel 12 is released for the insertion of the staple fiber band 11. Subsequently, the tape application device 91 is withdrawn, the applied staple fiber tape 11 being retained in the channel 12 by the shape thereof. If the arm 92 is far enough from the angle lever 73, then this engages the staple fiber band 11 and additionally secures it in its position.

Fig. 12 shows a spinning machine 1 which e.g. is designed as an open-end spinning machine and has a plurality of spinning stations 2. These spinning stations 2 each have a feed device with a feed roller 14 each and are connected via a manifold 3 to a control device 4, which is connected via a signal line 5 to a maintenance device 6 which can be moved along the spinning machine 1 (see double arrow 7).

Each spinning station 2 is equipped with guides 13 and 19 which have been omitted in FIG. 12 for the sake of clarity. The guides 13 and 19 are arranged in front of the feed roller 14 and can alternately be brought into a feed position and into a standby position.

Monitoring devices are also provided, which are also not shown in FIG. 12 for the sake of clarity. However, the arrangement is made in a manner analogous to the described embodiments so that the absence of a staple fiber band is recorded at each spinning station 2. The individual spinning stations 2 are queried in succession by a clock generator (not shown) of the control device 4. In the absence of a staple fiber tape 11, this is reported by the control device 4 to the maintenance device 6, which carries a tape application device (not shown) with it. The drive device of the maintenance device 6 sets the maintenance device 6 - unless it is currently carrying out maintenance work and can only store the need - in motion and brings it to the relevant spinning station 2, where it is in the manner described the application of a new staple fiber band 11 to the meantime empty guide 13 or 19 performs.

Instead of the control device 4 being designed as a request or call device for the maintenance device 6, it can also be provided in accordance with FIG. 13 that each spinning station 2 has a signal lamp 8 which lights up when there is no staple fiber band 11. This will be discussed in detail later in connection with FIG. 11.

The maintenance device 6, which can be moved along the spinning machine 1, is equipped with a sensor 9, which stops the maintenance device 6 when it reaches a luminous signal lamp 8, which then applies a new staple fiber band 11 in the manner described.

In the case of open-end spinning devices in particular, it is advantageous if, when a staple fiber band 11 runs out, an intentional interruption of the spun thread is accepted. It is namely only possible with difficulty to avoid irregularities in the spun thread when starting a new staple fiber band without interrupting the spinning process.

In order to avoid a thick or thin spot in connection with a tape change, it is necessary to wait until a thread break occurs as a result of the old staple fiber tape running out. A new staple fiber band 11 is then put on at this spinning station. The fibers combed out of this new staple fiber band 11 by means of the opening roller 16 are fed to the spinning device, e.g. a spinning rotor, but immediately removed before the spinning process has started again. When it is certain that the beginning of the new staple fiber tape has been removed in this way, the end of the previously broken thread, which has been prepared for spinning in the usual way, is returned to the spinning device and by spinning in a manner known per se connected to the newly fed fibers of the staple fiber tape.

It has proven to be advantageous that the feeding of the beginning of the band of the newly fed staple fiber band is combined with a cleaning of the open-end spinning device. For this purpose, the fiber supply is first switched on only briefly, the spinning device is cleaned in a known manner, the initially fed fibers are removed again from the spinning device, and only then is the usual piecing carried out with the band supply and thus the fiber supply being switched on again.

11 shows, for example, a guide element 93, in which the guides 13 and 19 are integrated and which is connected to a drive 86 via the drive device 85. By means of the drive 86, the guide member 93 can be moved either only in the direction of the double arrow 173 or in the direction of the double arrow 65 (see FIG. 10), so that the guide 13 or 19 is as close as possible to the feed roller 14.

At both ends of the stroke of the guide member 93 there is a limit switch 94 or 95, which is connected to a control device 96 or 97, with which the signal lamp 8 or another signal lamp 98 is also connected. A second limit switch 99 or 100 is connected to each control device 96 or 97.

The signal lamp 8 and also the signal lamp 98 - which was not shown in FIG. 13 for the sake of clarity - indicates the absence of a staple fiber band 11 and thus causes the passing maintenance device 6 to stop. The signal lamp 8 is switched on by the movement of the guide element 93 the position shown with a continuous line in the dashed position 93 ', in which the limit switch 94 is actuated. As a result, current reaches control device 96, which causes signal lamp 8 to light up.

If the maintenance device 6 has inserted a new staple fiber ribbon into the channel 12 in the manner described above, an element of the maintenance device 6 actuates the limit switch 99 in a manner not shown. In this way, a switching signal is passed to the control device 96, which interrupts the power supply to the signal lamp 8 , which then goes out.

Similarly, after a run-out or interruption of a staple fiber band 11 fed to the feed roller 14 through the channel 18, the pushing back of the guide element 93 via the limit switch 95 and the control device 97 causes the signal lamp 98 to light up. This stops the maintenance device traveling along the spinning machine 1 6 causes, which now creates a new staple fiber tape 11 on the channel 18 and then by means of the limit switch 100 by interrupting the power supply to the signal lamp 98, this goes out.

If no maintenance device 6 is provided or if this serves other purposes than the application of a new staple fiber band 11, the limit switch 99 or 100 can also be operated by hand after the application of a new staple fiber band.

In an alternative embodiment of the subject matter of the invention, the two limit switches 94 and 95 can also be connected to one and the same control device 96 and, via this, to a single signal lamp 8, which is switched off by the limit switch 99 after the tape application process has been carried out (see FIG. 14).

A further signal lamp 101 can also be provided, which is brought to light by the limit switch 94 or 95. This signal lamp is intended to indicate to the operator that a pot has run empty and must be replaced by a full one. If the empty jug has been replaced by a full jug, the operator actuates a further limit switch 102, whereby the signal lamp 101 is extinguished. If an automatic device for replacing the empty cans with full cans is provided, the limit switch 102 is actuated from this device.

A further modification of the device according to the invention is shown in FIG. 15. The staple fiber tape 11 is removed from a can 83 and held in the scanning area of a monitoring element 24 by two guides 103 and 104. The guides 103 and 104 are formed laterally open in the preferred form shown to enable lateral threading of the staple fiber band 11 by corresponding movements of the band application device 91, and are so far in front of the feed device that the changing of the leaking staple fiber band to a new one submitted staple fiber tape can also be done without interrupting the work process, if desired.

15 shows on the maintenance device 6 a drive device 105 which can be moved relative to the maintenance device 6 parallel to its direction of movement and is part of a switching device for the two guides 13 and 19 or a common guide element 93. This drive device 105 carries a swivel arm 106 with a driving lug 107 which can be brought into engagement in a corresponding recess (not shown) in the guide member 93 and is carried along when the drive device 105 moves. A swivel drive 108 is also arranged on the drive device 105, which is designed, for example, as an electro-magnet and whose armature is articulated to the swivel arm 106 via a coupling 109.

When the maintenance device 6 stops at a spinning station 2 in order to put on a new staple fiber sliver 11 and to insert it into the empty channel of the guide element 93, the swivel arm 106 is first lowered by the swivel drive 108. A control device, also not shown, uses a pushbutton (not shown) to determine whether the driver nose 107 is immersed in the not shown recess of the guide element 93 or not. At this time, the swivel arm 106 is in one of its two end positions. If the control device determines that the driver nose 107 only rests on the top of the correspondingly dimensioned guide member 93, the swivel arm 106 is brought into its other end position by means of the swivel drive 105, where the driver nose 107 dips into the recess (not shown) in the guide member 93.

By immersing the driver lug 107 into the recess in the guide member 93, the control device mentioned is indicated that the drive device 105 is in its starting position for switching the guide member 93. The drive device 105 now executes the offset movement for feeding the new sliver, in which the channel 12 or 18, in which the reserve belt is located, is brought into the feed position. If desired, the swivel arm 106 can also carry out a retracting and advancing movement or also a swiveling back and forward swiveling movement in connection with the described offset movement, as has already been described in connection with FIGS. 1 to 4 or 5 and 6.

Automatic tape application is not only possible on spinning machines such as open-end or ring spinning machines, but also on other textile machines in which staple fiber tapes are processed or processed. As already mentioned, such a tape can be placed in cans or presented in the form of coils etc.

According to FIG. 16, a draw frame 110 with several belt feeds and a common feed device (drafting device 117) is provided as a textile machine. 16 only a part of this route 110 is shown. The six slivers to be drawn are taken from six cans 111, 112, 113, 114, 115 and 116 and fed to the drafting device 117. Of these tapes, only the first to fourth and the sixth tapes 137, 138, 139, 140 and 141 can be seen, since the fifth tape has run out and the corresponding can 115 is empty. The slivers are monitored in the drafting system 117 or in front of it with the aid of six band monitors 118, 119, 120, 121, 122 and 123.

In front of the drafting system 117 there are guide members 124, 125, 126, 127, 128 and 129 which can be adjusted with the aid of a drive device 130 - in the embodiment shown perpendicular to the plane of the illustration. Each guide member 124 to 129, like the guide members 93 described above, has two channels 12 and 18 each for guiding a first sliver in the feed position and for receiving and guiding a second sliver in a standby position. Each channel 12 or 18 can alternately be brought into a feed or standby position.

In addition to the cans 111 to 116 mentioned, a second set of cans 131, 132, 133, 134, 135 and 136 is provided for slivers 142, 143, 144, 145, 146 and 147.

Feed rollers 148 to 159 are provided for feeding the fiber slivers. Only one feed roller is driven from each pair of feed rollers 148/149, 150/151, 152/153, 154/155, 156/157 and 158/159, the selection of which of the two feed rollers is driven or stopped in Depending on the position of the guide member 124, 125, 126, 127, 128 and 129 takes place. The slivers 137 to 147 are deflected between the feed rollers 148 to 159 and the guide members 124 to 129 with the aid of deflection rollers 160 to 171, one deflection roller of each pair of deflection rollers 160/161, 162/163, 164/165, 166/167 , 168/169 and 170/171 above and a deflection roller is arranged below a separating plate 172. This separating plate keeps the fiber tapes 137 to 141 of the cans 111 to 116 separated from the fiber tapes 142 to 147 of the cans 131 to 136 between the feed rollers 148 to 159 and the guide members 124 to 129.

16, the guide members 124 to 127 and 129 are in their one end position, in which they each feed a sliver 137 to 141 guided above the separating plate 172 to the drafting system 117. The guide member 128, on the other hand, is in its other end position, in which it feeds the sliver 146 guided below the separating plate 172 to the drafting system 117.

A second sliver 142 to 145 and 147 has already been inserted into the guide members 124 to 127 and 129 and is now in the ready position. In the guide member 128, however, the sliver must be reintroduced after the can 115 has been replaced by a new can. This can be done by hand or with the help of a tape application device, not shown.

The change of the management organs for the submission of a new band when the previously submitted band runs out takes place in the manner described above.

The empty cans can be replaced during operation. If adjacent outer cans are not too close to one another, this is also possible without difficulty with cans 131 to 136, especially since these can also be shifted somewhat to the side for changing cans.

If desired, instead of the belt monitors 118 to 123 shown or in addition to these, belt monitors (not shown) can be arranged in the vicinity of the feed rollers 148 to 159. Since these respond earlier than the band monitors 118 to 123 shown, a band change can also be controlled with the aid of these band monitors, not shown, in such a way that the end of the band and the beginning of the band overlap and a thread breakage is prevented.

Reference number 88/795

• 1 spinning machine
• 2 spinning station
• 3 manifold
• 4 control device
• 5 signal line
• 6 maintenance device
• 7 double arrow
• 8 signal lamp
• 9 sensor
• 11 staple fiber tape
• 12, 18 channels
• 13, 19 leadership
• 13 ′ standby
• 14 feed roller
• 15, 20 food trough
• 16 opening roller
• 17 fiber feed channel
• 21 bodies
• 22 axis
• 23 wave
• 24 monitoring body
• 25 food trough
• 26 management body
• 27 spring
• 28, 29 straight
• 30 bodies
• 30 ′, 30˝ location
• 31, 32 wave
• 33 snail
• 34 worm wheel
• 35 position
• 36, 38 leadership
• 37 fuse
• 39 carrier plate
• 40 channel
• 41, 42, 43 drive roller
• 44, 45, 46 pressure roller
• 47 straps
• 48 spindle
• 49 runners
• 50 balloon
• 51, 52 axes
• 54, 55, 56 coil
• 57, 58 leadership
• 59 Ready position
• 60, 61 leadership
• 62 Ready position
• 63, 64 spool
• 65 double arrows
• 66 connector
• 67, 68, 69, 70 length section
• 71, 72 extension
• 73, 74 angle lever
• 75, 76 compression spring
• 77, 78 support
• 79 bearings
• 80 bearings
• 81, 82 stop
• 83, 84 jug
• 85 drive connection
• 86 drive
• 87 control device
• 88, 89 supervisory body
• 90 control device
• 91 Belt application device
• 91 ′ position
• 92 arm
• 92 ′ position
• 93 management body
• 93 ′ position
• 94 limit switches
• 95 limit switches
• 96, 97 control device
• 98 signal lamp
• 99, 100 limit switches
• 101 signal lamp
• 102 limit switches
• 103, 104 leadership
• 105 drive device
• 106 swivel arm
• 107 driving lug
• 108 part-turn actuator
• 109 paddock
• 110 route
• 111, 112, 113 jug
• 114, 115, 116 jug
• 117 drafting system
• 118, 119, 120 bandguard
• 121, 122, 123 bandguard
• 124, 125, 126 management body
• 127, 128, 129 management body
• 130 drive device
• 131, 132, 133 jug
• 134, 135, 136 jug
• 137, 138, 139 sliver
• 140, 141, 142 sliver
• 143, 144, 145 sliver
• 146, 147 sliver
• 148 feed roller
• 149 to 159 feed roller
• 160 to 171 pulley
• 172 partition plate
• 173 double arrow

Claims (32)

1. A method for automatically applying a staple fiber tape to a textile machine having a feed device, in which two staple fiber tapes are inserted in two guides, of which the first guide takes up a feed position and the first staple fiber tape fed to the feed device leads, while the second guide leads the second staple fiber tape into holds a standby position, and in which, when the supply of the first staple fiber band to the feed device is interrupted, the second staple fiber band is brought into the feed position and fed to the feed device, characterized in that when the supply of the first staple fiber band to the feed device is interrupted, the empty first guide from the feed position in a standby position and at the same time the second guide are brought into the feed position together with the second staple fiber sliver inserted into them, whereupon the first, now in a standby position guiding a staple fiber tape is reinserted. 2. The method according to claim 1, characterized in that the standby position, in which the empty guide for inserting a new staple fiber tape is brought, is alternately provided on one side or the other from the feed position. 3. The method according to claim 2, characterized in that the guides are moved parallel to the axis of the delivery roller. 4. The method according to one or more of claims 1 to 3, characterized in that the guide , which is in a standby position, monitors for the presence of a staple fiber band and a signal is triggered in the absence of a staple fiber band. 5. The method according to claim 4, characterized in that the signal triggers the insertion of a new staple fiber tape in the empty guide. 6. The method according to one or more of claims 1 to 5, characterized in that after completion of the insertion process of the new staple fiber sliver, the sliver is secured in the inserted position. 7. The method according to one or more of claims 1 to 6, characterized in that a common presentation of a third staple fiber band is provided for two adjacent feed devices, these feed devices being supplied with a new staple fiber band at different times in such a way that when one Feeder a new staple is fed, the staple of the other feeder has already been fed about half of the feeder, that the leaking staple is replaced by a new one and is fed to the feeder on which the previously fed staple next runs out. 8. The method according to one or more of claims 1 to 7, characterized in that when interrupting the supply of a staple to the feeder, the switching of the guides takes place so early that the beginning of the new staple lies on the end of the leaking staple and together with this can get into the feed device. 9. The method according to claim 8, characterized in that the end of the outgoing staple fiber band is connected to the beginning of the new staple fiber band before it is introduced into the feed device. 10. The method according to one or more of claims 1 to 9, in which the application of the staple fiber tape takes place on an open-end spinning device, characterized in that the application of the new staple fiber tape is carried out only after there has been a thread break that after Putting on the new staple fiber band the beginning of the newly created staple fiber band is fed to the spinning device and removed from it again and then spun again. 11. The method according to claim 10, characterized in that when the staple fiber band is put on, the fiber feed caused by the feed device into the open-end spinning device is only switched on briefly, then the open-end spinning device is cleaned and only then is the fiber supply finally switched on in connection with the piecing. 12. Device for automatically applying a staple fiber tape to a textile machine having a feed device, with a first and a second guide for a first staple fiber tape fed to the feed device and a second staple fiber tape that is in a standby position and with a monitoring device monitoring the staple fiber tape fed to the feed device in order to trigger a supply of the second staple fiber band to the feed device when the supply of the first staple fiber band to the feed device is interrupted, to carry out the method according to one or more of claims 1 to 11, characterized in that the two guides (13, 19; 36, 38; 57, 58; 60, 61; 93) are connected to one another in terms of movement such that when the one guide (13, 36, 57, 60, 93) moves from a feed position into a standby position, the other guide (19, 38, 58, 61, 93) from a standby position to a Feed position can be brought. 13. The apparatus according to claim 12, characterized in that the two guides (13, 19; 36, 38; 57, 58; 60, 61; 93) are non-positively connected. 14. The apparatus according to claim 12 or 13, characterized in that a standby position is provided on both sides of the feed position and the one guide (13, 36, 37, 60, 93) alternately in the standby position or the feed position and the other guide (19th , 38, 58, 61, 93) can be brought alternately into the feed position or the other standby position. 15. The apparatus according to claim 14, wherein the feed device has at least one feed roller, characterized in that the guides (13, 19; 36, 38; 57, 58; 60, 61; 93) are movable parallel to the axis of this feed roller (14) are. 16. The device according to one or more of claims 12 to 15, characterized in that the two guides (13, 19) on a common, about an axis (22) pivotable body (21, 30) are attached and by about the axis (22) swiveling movements of the body (21, 30) are alternately pivotable into a feed position or into a standby position. 17. The apparatus according to claim 16, characterized in that the feed and standby position with respect to the axis (22) are arranged diametrically opposite one another and thus the two guides (13, 19) by pivoting movements of 180 ° between their feed and their standby position are. 18. The device according to one or more of claims 12 to 17, characterized in that the exit point of the guide (13) in its feed position is located directly in front of the converging space in front of a feed roller (14) and the distance of this guide (13) can be changed by the feed roller (14) by moving the body (21, 30). 19. The apparatus according to claim 18, characterized in that the body (21) in the direction parallel to the axis (22) is retractable and can be advanced. 20. The apparatus according to claim 18, characterized in that the body (30) is tiltable about a second axis perpendicular to the axis (22). 21. The apparatus according to claim 18 to 20, characterized in that the guides (13, 19) with a with the feed roller (14) cooperating feed trough (15, 20) and are movable with this in their feed and ready position. 22. The device according to one or more of claims 12 to 20, characterized in that a with a feed roller (14) cooperating feed trough (25) is provided in a fixed position and is biased by an elastic means (27) against this feed roller (14). 23. The device according to claim 22, characterized in that the feed trough (25) has guide ramps (26) which, when changing the guides (13, 19), serve to guide the sliver starting pieces projecting from the guides (13, 19) and which of the Nip with the feed roller (14) are arched downwards. 24. The device according to one or more of claims 12 to 17 or 18 to 23, characterized in that the exit point of the guide (36) in its feed position is immediately in front of the converging space in front of the inlet cylinder (41) and a pivotable and counter the latter biased pressure roller (44) is part of a drafting device feeding device. 25. The device according to one or more of claims 12 to 24, characterized by a monitoring device (88, 89; 94, 95) for monitoring the guide (13, 19; 36, 38; 57, 58; 60, 61; 93) for the presence of a staple fiber band (11) and for triggering a signal in the absence of a staple fiber band (11). 26. The apparatus according to claim 25, with a plurality of tape feed points arranged side by side, each with a feed device and with a maintenance device movable along the tape feed points, characterized in that the monitoring device (88, 89; 94, 95) with a request device for the maintenance device (6) connected is. 27. The apparatus according to claim 26, characterized in that the maintenance device (6) has a switching device (105 - 108) for the two guides (13, 19; 36, 38; 57, 58; 60, 61; 93). 28. The apparatus according to claim 26 or 27, characterized in that the requesting device is connected via a control device (4) to the drive device of the maintenance device (6). 29. The device according to one or more of claims 26 to 28, characterized in that the maintenance device (6) has a tape application device (91). 30. Spinning machine according to one or more of claims 12 to 29, characterized in that the guides (13, 19) cooperate with a known apparatus for the automatic connection of a staple fiber tape (11), for example by twisting or splicing the same. 31. The device according to one or more of claims 12 to 30, characterized in that the textile machine is designed as a draw frame (110) with a plurality of tape feeds, that further before the plurality of tape feeds commonly assigned feed device (117) per tape feed a first and a second Guide (124 - 130) is provided, which can be brought alternately into a feed or standby position. 32. Device according to one or more of claims 12 to 30, characterized in that the textile machine is designed as an open-end spinning machine with a plurality of spinning stations (2) arranged next to one another, each with a feed device (14, 15) and in front of each feed device (14, 15 ) a first and a second guide (13, 19; 36, 38; 57, 58; 60, 61; 93) are provided, which can alternately be brought into a feed or standby position.

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