EP0274016A2 - Procédé et dispositif de rattache pour machine de filature à bout libre - Google Patents

Procédé et dispositif de rattache pour machine de filature à bout libre Download PDF

Info

Publication number
EP0274016A2
EP0274016A2 EP87115943A EP87115943A EP0274016A2 EP 0274016 A2 EP0274016 A2 EP 0274016A2 EP 87115943 A EP87115943 A EP 87115943A EP 87115943 A EP87115943 A EP 87115943A EP 0274016 A2 EP0274016 A2 EP 0274016A2
Authority
EP
European Patent Office
Prior art keywords
thread
roller
take
bobbin
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87115943A
Other languages
German (de)
English (en)
Other versions
EP0274016B2 (fr
EP0274016A3 (en
EP0274016B1 (fr
Inventor
Walter Mayer
Kurt Lovas
Stephan Dipl.-Ing. Wittmann (Tu)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau AG
Schubert und Salzer Maschinenfabrik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6153944&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0274016(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG, Schubert und Salzer Maschinenfabrik AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0274016A2 publication Critical patent/EP0274016A2/fr
Publication of EP0274016A3 publication Critical patent/EP0274016A3/de
Application granted granted Critical
Publication of EP0274016B1 publication Critical patent/EP0274016B1/fr
Publication of EP0274016B2 publication Critical patent/EP0274016B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/48—Piecing arrangements; Control therefor
    • D01H4/50—Piecing arrangements; Control therefor for rotor spinning

Definitions

  • the present invention relates to a method for piecing an open-end spinning device, in which the thread is drawn off from a bobbin, cut to length and the thread end is brought into a position for insertion into the spinning device to form a thread reserve, and the thread end is returned from the thread reserve to the spinning device and the re-spun thread is drawn off.
  • the thread withdrawn from the spool is brought to be spun in front of the mouth of the thread take-off tube (DE-OS 20 12 108). Then the piecing thread is inserted into the thread take-off tube by turning back the bobbin using the negative pressure of the spinning and immediately returned to the collecting groove of the spinning rotor. Because of the inertia of the bobbin, the dwell time of the thread in the spinning rotor is quite long, so that - especially at higher rotor speeds - there is a risk that the thread will be overturned and a thread breakage will occur.
  • the object of the invention is therefore to provide a method and a device which avoid these disadvantages and enable good piecing at high spinning speeds.
  • the thread end is first brought from the position for insertion into the spinning device within the thread take-off tube into a standby position, from which the thread end is returned to the fiber collecting surface by releasing the thread reserve.
  • the return time of the thread for contacting the fibers in the rotor is reduced to a minimum. Precise, yet individual time control at high spinning speeds is made possible and piezers of high quality are achieved.
  • the yarn is returned to the open-end spinning device in two stages, the yarn being metered in the first stage.
  • This first return stage includes the formation of a thread reserve, the release of which is independent of the return rate of the first stage.
  • This second stage of thread return which is brought about by the release of the thread, the thread comes into contact with the fibers on the fiber collecting surface. This thread release not only results in a certain self-control of the direct piecing process, but it also always results in the same conditions.
  • the withdrawal of the re-spun thread begins at a time-definable interval for releasing the thread reserve, so that an adaptation to different materials etc. is possible.
  • the provision of the thread end for piecing is advantageously carried out in that the thread is cut to a length such that the thread end supplied to the thread take-off tube, forming the thread reserve required for the return delivery from the ready position, extends up to the mouth of the thread take-off tube, and through the coil is returned to the standby position by a certain distance.
  • the adaptation to the different diameters is expediently not carried out by the size of the thread reserve, but the distance is determined according to the invention as a function of the diameter of the fiber collecting surface of the open-end spinning device, so that regardless of the diameter of the fiber collecting surface selected in each case, the path of the piecing return delivery is released the thread reserve is always the same size.
  • this release of the thread reserve is preferably carried out by throwing off the thread.
  • the twist necessary for attachment in the thread can be individually adapted to the thread.
  • the thread take-off is soft, which also favors piecing at high spinning speeds. The number of thread breaks during piecing is reduced and the tensile strength in the piecing is increased significantly.
  • the auxiliary trigger can take place independently of the winding or also exclusively through the coil. After a short time, which is sufficient for the auxiliary draw to reach its full speed, the thread is transferred to the draw-off roller pair. Since the thread is already being drawn off the open-end spinning device at full speed at this point, there is no jump in speed, so that there is no risk of thread breaks at this point either.
  • the start of the thread take-off is gentle with a smaller amount of fiber effective in the open-end spinning device and with one larger amount of fiber effective in the open-end spinning device is accelerated more.
  • less fiber material is required in the open-end spinning device at the moment the thread take-off is inserted, ie the dwell time between the end of the return delivery and the start of the thread take-off can be kept shorter, so that the excessive amount of fibers otherwise leading to a thick point in the thread thickness in the open-end Spinning station can be avoided, while at the same time due to the correct rotation propagation in the open-end spinning device, the yarn strength does not drop compared to the thread piecing previously produced in the usual way.
  • the pressure roller of the pair of draw-off rollers is lifted off the driven roller before the re-spinning, the thread is presented to the draw-off tube after being cut to length, so that the thread takes a curved course over the driven roller, and is put back on to insert the normal spinning take-off, when the bobbin has reached the full winding speed.
  • a precise and gentle insertion of the thread take-off can be achieved, wherein control of the pressure roller from a maintenance device, which can be moved along a large number of open-end spinning stations, enables a particularly economical device.
  • the pressure roller of the pair of draw-off rollers is lifted off the driven roller, that the bobbin is also released from the main drive, and that the thread subsequently
  • the bobbin is pulled back from the bobbin, guided over a throwing device, brought to a defined length, then the trimmed thread end is brought into front of the mouth of the thread take-off tube and thereby gets between the driven roller and the pressure roller of the pair of draw-off rollers and is then returned to the ready position in the thread take-off tube , whereupon the throwing-off device throws off the thread, which is now supplied to the fiber collecting surface by the negative pressure prevailing in the spinning device, that the newly spun thread is then pulled off the fiber collecting surface with increasing speed and, finally, after reaching the full winding speed, the bobbin on the main drive lowered and the pressure roller is placed back on the driven roller of the pair of draw rollers.
  • a length measuring device that can be adjusted to the diameter of the fiber collecting surface is provided for returning the thread end to a standby position, and a thread ejecting element that is arranged between the spinning device and the bobbin and deflects the thread.
  • the purpose of the length measuring device is to bring the thread into a predetermined ready position, while the throwing device enables the thread to come into contact with the fibers fed to the open-end spinning device.
  • the length measuring device can be adjusted to the selected diameter of the fiber collecting surface of the spinning element.
  • an auxiliary take-off device is provided, which is arranged at a greater distance from the open-end spinning device than the pair of take-off rolls. This enables piecing at particularly high speeds of the spinning element.
  • the auxiliary draw-off device is designed as a pair of auxiliary draw-off rollers, which is particularly advantageous in connection with a thread-connecting device replacing the piecing device, which is why, in a further embodiment of the subject-matter of the invention, a thread-connecting device can be brought into the thread path between the pair of draw-off rollers and the pair of auxiliary draw-off rollers.
  • the auxiliary take-off device is formed by the coil and a drive roller which can be driven in both directions of rotation, the drive of the drive roller expediently adapting to the start of the fiber feed which is effective in the open-end spinning device is adjustable.
  • This device makes it possible to run the thread draw up to full speed in such a way that speed jumps are avoided, so that there is no risk of thread breaks.
  • the drive roller can, according to the invention, wear a jacket made of a soft material, preferably soft rubber.
  • the measure that a pressure device is assigned to the drive roller, by means of which the drive roller is pressed against the coil with increasing coil diameter with increasing contact pressure, can ensure that the same coil acceleration is always achieved regardless of the coil diameter.
  • the drive roller is pressed against the spool on the side facing away from the spooling roller, then depending on the size of the spool, different positions of the drive roller are obtained when driving the spool, so that the instantaneous diameter of the spool has an effect.
  • a compact design of the auxiliary coil drive is achieved according to the invention in that the drive roller is carried by a swivel arm on which a torsion spring acts.
  • the drive roller is carried by a swivel arm, the drive of which has a rotatable cam disk and an adjustable intermediate linkage between the cam disk and swivel arm.
  • the intermediate linkage enables the swivel arm to be adjusted in a particularly simple manner.
  • a lifting element which can be inserted between the winding roller and the bobbin, and a support device which can be brought into action on the bobbin arms and which, after the lifting element has been withdrawn, ensures a constant distance between the peripheral surface of the bobbin and the winding roller.
  • the bobbin is immediately lifted off the winding roller when a thread break occurs. This can happen so quickly that the end of the broken thread no longer reaches the bobbin and hangs freely from the bobbin. It is particularly easy to pick up the thread for the return delivery.
  • the lifting element is designed so that a defined distance is formed between the spool and the winding roller, so that the instantaneous diameter of the spool affects the working position of the drive roller, which cooperates with the side of the spool facing away from the spool.
  • the support device has a drive lever which can be pivoted by a controllable drive, and a support lever which is arranged thereon and can be pivoted between two end positions and which is acted upon by an elastic element in the direction of the coil and thereby into its first end position and at Heading onto one of the two coil arms can be brought into its second end position, which is assigned a switching device for ending the pivoting movement of the drive lever.
  • a switching device is actuated mechanically.
  • the controllable drive for the drive lever is designed as an electric motor and the switching device is designed as an electrical switch arranged on the drive lever, which interrupts the power supply to the motor when actuated by the support lever.
  • a design is particularly advantageous in accordance with which the pressure roller, which can be lifted off from the driven take-off roller by a maintenance device which can be moved along a large number of open-end spinning devices, and can be put back on the driven take-off roller.
  • a maintenance device which can be moved along a large number of open-end spinning devices, and can be put back on the driven take-off roller.
  • the subject of the registration creates the conditions for the reliable spinning even at high rotor speeds, so that an exact timing of the attachment process to the run-up curve of the spinning rotor is not necessary. This results in a significant simplification of the control, which allows large time tolerances and is therefore easy to master.
  • FIG. 1 shows the essential parts of a spinning machine 1 operating according to the open-end spinning process, insofar as they are necessary to understand the explanation. In practice, these parts are generally distributed over the spinning machine 1 and a maintenance device 2 which can be moved along the spinning machine 1, but it is also possible to provide all the elements shown on the spinning machine 1 itself and to dispense with the maintenance device 2, in particular in the case of test machines with one or only a few spinning positions.
  • the spinning machine 1 shown has a large number of spinning positions, of which FIG. 1 only shows one spinning position.
  • An open-end spinning device with a spinning element arranged in a housing 10, a pair of take-off rollers 13 and a winding device 30 are provided for each spinning station.
  • a spinning rotor 11 is used, for example, as the spinning element, which generates a thread 3 which, after incorporation in the usual manner, with the aid of a fiber delivery device and a dissolving device - e.g. in the form of an opening roller - the fibers fed to the spinning element are drawn off from the housing 10 by means of the pair of draw-off rollers 13 through a draw-off tube 12.
  • a thread monitor 36 is arranged in the thread path between the housing 10 and the pair of draw-off rollers 13.
  • the spinning machine 1 has a winding device 30, which essentially has a main drive roller 31 for driving the bobbin 33, which is interchangeably received by two pivotable bobbin arms 32.
  • the coil arms 32 are pivotable about an axis 34.
  • a thread tension compensation bracket 14 is arranged in a known manner in the thread path between the draw-off roller pair 13 and the bobbin 33.
  • a part of a spool lifting device 4 forming lever element 40 is also provided per spinning station, which lifts the latter by a certain value a from the main drive roller 31 by being inserted between the main drive roller 31, so that a due to the strength of the lifting element 4 Defined distance a between the peripheral surfaces of the coil 33 and the main drive roller 31 is formed.
  • a suction pipe 20 is arranged on the maintenance device 2 and can be brought to the underside of the bobbin 33 lifted off the main drive roller 31 in order to be able to pick up the end of a broken thread 3 there.
  • the suction tube 20 has a cranked shape and has a longitudinal slot (not shown) on its side facing the spinning machine 1, so that the thread 3 can partially leave this slot in the form of a chord as it enters the suction tube 20.
  • the maintenance device 2 also carries a pair of auxiliary rollers 21 which is supported by a lever 23 which can be pivoted about an axis 22 such that the pair of auxiliary rollers 21 can grip the thread 3 arranged tendon-like to the suction tube 20 and feed it to the draw-off tube 12.
  • a coil auxiliary drive 5 is arranged on the maintenance device 2.
  • the coil auxiliary drive 5 has a swivel arm 50 which is pivotably mounted on an axis 51 and carries a roller 52 at its free end, which can be driven in a manner not shown by a drive, not shown, in either direction.
  • the roller 52 is surrounded by a jacket 53 made of soft rubber or another soft material.
  • a swivel drive 6 for the swivel arm 50 is further arranged on the maintenance device 2, which in the embodiment shown has a camshaft 61 driven by a motor 60, on which a cam disk 62 is arranged.
  • a two-armed lever 64 is pivotably mounted, at one end of which the cam disk 62 can engage and at the other end of which an actuator 65 is connected.
  • This actuator 65 the free end of which is connected to the swivel arm 50, consists in the embodiment shown of two bolts 66 and 67, which have opposite threads and on which a threaded sleeve 68 is screwed with opposite threads, so that by rotating the threaded sleeve 68 Distance between the lever 64 and the pivot arm 50 can be changed. In this way, a precise adjustment of the lever 64 to the swivel arm 50 is possible.
  • the cam plate 62 causes the roller 52 to be lifted off the spool 33, while a tension spring 7 acting on the swivel arm 50 causes the swivel arm 50 to be supported on the spool 33 by the cam plate 62 when the lever 64 is released.
  • the support device 8 consists essentially of a pivotably mounted drive lever 80, on the free end of which a support lever 81 is articulated.
  • This two-armed support lever 81 is movable between two stops 82 and 83 attached to the drive lever 80 and is acted upon by means of an elastic element designed as a compression spring 84, which is supported at one end on the drive lever 80 and at the other end on the support lever 81, so that the support lever 81 is normally supported on the stop 82.
  • a switch 85 is provided on the drive lever 80 so that the support lever 81 actuates this switch 85 when it rests on the stop 83 without being supported on the switch housing.
  • the switch 85 is electrically connected to a motor 86 which serves as a pivot drive for the drive lever 80 and secures the drive lever 80 in its current position when it is stopped.
  • the motor 86 is connected to a control device 9, which is also connected to the motor 60.
  • the device described above in construction works as follows: If a thread break occurs, this triggers the termination of the fiber feed into the spinning rotor 11 and a lifting of the bobbin 33 from the main drive roller 31 via the thread monitor 36 in that the lifting element 40 forming the essential component of the bobbin lifting device 4 between the bobbin 33 and the main drive roller 31 is pushed.
  • the winding of the thread 3 on the bobbin 33 thus becomes extreme quickly interrupted, depending on the winding speed, often even before the end of the thread has reached the bobbin 33.
  • the coil lifting device 4 By inserting the lifting element 40 between the main drive roller 31 and the coil 33, the coil lifting device 4 forms a precisely defined distance a between the peripheral surfaces of the coil 33 and the main drive roller 31, this distance corresponding to the thickness of the lifting element 40 between the coil 33 and the main drive roller 31.
  • the opening roller (not shown) that continues to run even after the fiber delivery device is stopped, the fiber beard projecting into the working area of the opening roller is milled off and fed to the spinning rotor 11 together with the fibers in the clothing of the opening roller.
  • a signal is triggered in a known manner, which either causes the maintenance device 2 or which causes the continuously rotating maintenance device 2 to stop at the disturbed spinning position in order to remedy the broken thread.
  • a control device 9 temporarily switches on a rotor cleaning device (not shown), as a result of which the fibers in the spinning rotor 11 are removed from it in a manner known per se. Furthermore, in a manner not shown, the maintenance device 2 lifts the pressure roller of the pair of draw-off rollers 13 from the driven roller. It also uses the engine 86 the drive lever 80 is pivoted upwards with the support lever 81. During this movement, the support lever 81 resting on the stop 82 comes to rest against the arm 35 of the spool arm 32. As a result, the support lever 81 is pivoted relative to the drive lever 80 against the action of the compression spring 84 until it bears against the stop 83.
  • the support lever 81 actuates the switch 85, which thereby opens and thus interrupts the power supply to the motor 86.
  • the lifting movement of the drive lever 80 is thus ended and this lever is fixed in the current position.
  • the control device 9 causes the lifting element 40 to be withdrawn so that it releases the coil 33. This can be done by mechanical action from the maintenance device 2 on the lifting element 40 or by actuation of an electrical element, not shown, which brings about this relationship.
  • the spool 33 remains in its current position since it is supported by the support lever 81.
  • the control device 9 After release of the bobbin 33 by the lifting element 40, the control device 9, in a manner not shown, causes the suction tube 20 to be brought into the thread take-up position. In this position, the suction tube 20 is located on the underside of the coil 33, so that the distance between the suction tube 20 and the coil 33 is essentially the same regardless of the coil diameter.
  • the control device 9 switches on the motor 60, which causes the camshaft 61 to rotate. In this way, the cam disk 62 releases the lever 64, so that the roller 52 is brought into contact with the coil 33 by the action of the tension spring 7 on the swivel arm 50.
  • the tension spring 7 is more or less tensioned so that with a larger spool diameter, the contact pressure of the roller 52 against the spool 33 is greater than with a smaller spool diameter. If the roller 52 is now driven via return means (not shown) for returning the thread 3, this different contact pressure compensates for the inertia and avoids a different slip which would otherwise occur due to the different masses of the bobbin 33.
  • the thread 3 which lies only loosely on the circumference of the bobbin due to the rapid stopping of the bobbin 33 with the aid of the lifting element 40, is sucked into the suction tube 20, and during the suctioning it is due to the cranked shape of the suction tube 20 in the form of a tendon partially exits from the suction pipe 20.
  • the return delivery of the thread 3 is interrupted by control from the control device 9 and the suction tube 20 is brought into its position shown in broken lines.
  • the auxiliary roller pair 21 is pivoted out of a rest position about the axis 22, this auxiliary roller pair 21 passing through the course of the thread 3 entering the slot of the suction tube 20.
  • the thread on the side of the auxiliary roller pair 21 facing away from the bobbin 33 is separated by conventional means, not shown, and the auxiliary roller pair is pivoted in front of the mouth of the draw-off tube 12.
  • the spinning rotor 11 or another open-end spinning element has meanwhile been rotated again and the fiber feed on the fiber collecting surface has been switched on again.
  • the thread 3 is returned by rotating the bobbin 33 and the pair of auxiliary rollers 21 until it reaches the fiber collecting surface of the spinning rotor 11 or another open-end spinning element reached, whereupon the clamping of the pair of auxiliary rollers 21 is released, for example by lifting the roller further from the axis 22 from the roller arranged closer to the axis 22.
  • the thread 3 is released from the auxiliary roller pair 21.
  • the auxiliary roller pair 21 now returns to its rest position.
  • the roller 52 is driven in the opposite direction, so that the thread 3 is drawn off from the spinning rotor 11.
  • the thread 3 is thus drawn off from the spinning rotor 11 exclusively by the bobbin 33 in this piecing phase.
  • the drive of the fiber delivery device is switched on at a moment which is coordinated with the return delivery and renewed removal of the thread 3. Since the previously emptied clothing of the opening roller has to be filled again until the full fiber flow can get into the spinning rotor 11, there is a soft effect of the fiber delivery with regard to the spinning rotor 11. In accordance with this effect of the fiber delivery, the thread draw-off should also become “soft” in order to ensure a piecing of high strength and, on the other hand, to avoid an excessively large jump in the thread tension and thus thread breaks.
  • the roller 52 is thus accelerated to the normal winding speed in a relationship which is adapted to the effect of the fiber delivery in the spinning rotor 11, the inevitable slippage of the coil 33 being taken into account when the roller 52 is accelerated.
  • the slip is kept by the choice of an appropriate spring constant, length and tension of the tension spring 7 regardless of the respective bobbin diameter in such a way that it does not falsify the thread take-off speed or only falsifies it within tolerable limits affects.
  • the bobbin 33 When the bobbin 33 has reached the full bobbin winding speed, the bobbin 33 is lowered by pivoting the drive lever 80 onto the main drive roller 31 and the roller 52 is lifted off the bobbin 33 by the action of the cam disk 62 on the lever 64. Furthermore, the pressure roller of the pair of draw rollers 13 is released by the maintenance device 2.
  • the described method is not restricted to the exemplary embodiment shown.
  • the device can also experience modifications in the context of technical equivalents or other combinations of features.
  • the auxiliary roller pair 21 is assigned a thread separation device in the usual way, which brings the thread 3 to a certain length.
  • a return delivery measuring device is assigned to the auxiliary roller pair 21 in a known manner, which determines the number of rotations of the auxiliary roller pair 21 and thus the return delivery amount of the thread 3.
  • a throwing member 25 deflecting the thread 3 can be provided in the thread path between the pair of draw-off rollers 13 and the bobbin 33.
  • the thread 3 When the thread 3 is sucked out of the bobbin 33, the thread 3 arrives at the ejection element 25. When the thread 3 is subsequently fed to the draw-off tube 12 and fed to the draw-off tube 12 after cutting to a predetermined size, the thread 3 takes a curved course .
  • the mentioned return delivery measuring device - which is designed, for example, as a timing element that controls the duration of the current supply to the drive motor of the auxiliary roller pair 21 - the auxiliary roller pair 21 is driven by a predetermined number of rotations in the return delivery direction. As a result, the thread end in the thread take-off tube 12 reaches a precisely defined position, which is identified in FIG. 1 as position B 1.
  • This position B 1 the thread end is between the two ends of the thread take-off tube 12, where it is held securely by the vacuum acting in the spinning device.
  • This position B 1 is selected so that its distance along the thread take-off path is essentially the same as the additional thread path that results from the deflection by the take-off member 25 compared to the normal thread path between the take-off roller pair 13 and the bobbin 33.
  • the pair of auxiliary rollers 21 now releases the thread 3 and can thus be pivoted away from the area of the mouth of the draw-off tube 12.
  • the throwing member 25 now throws off the thread 3, the end of which comes from the ready position B 1 into the area of the fiber collecting surface of the spinning rotor 11 chosen as an example, where it integrates the fibers that have now been fed in.
  • the piecing take-off by the bobbin 33 now begins in time with the thread dropping by the throwing member 25.
  • the released thread length has essentially the same length as the distance of the standby position B 1 along the thread withdrawal path from the collecting surface - i.e. Collecting groove of the spinning rotor 11 - is; However, it must be taken into account in the thrown-off thread reserve that the thread end must be able to lay down in the collecting groove of the spinning rotor over a certain length of the circumference in order to break open and bind in the fiber ring.
  • the return delivery measuring device can be adjusted depending on the diameter selected in each case. If, for example, the return delivery measuring device is designed as a digitally adjustable time relay, it is sufficient to specify the corresponding time as a digital value in accordance with the selected diameter, as a result of which the working time of the drive motor for the auxiliary roller pair 21 and thus also the return delivery path of the thread 3 is determined.
  • a spinning rotor 110 is shown in dashed lines in FIG. 1 and has a larger diameter than the spinning rotor 11. So that regardless of this diameter always the same, achieved by the Abschorgan 25 way of piecing return, the timing relay is adjusted to a larger rotor diameter adapted, higher time, so that the auxiliary roller pair 21 delivers the thread 3 to the standby position B2. Here too, the actual piecing return is carried out by the described ejection device 25.
  • the auxiliary trigger for the piecing process takes place exclusively by individually driving the coil 33, but it is also conceivable to make this auxiliary trigger independently of the coil 33.
  • an additional pair of auxiliary take-off rollers 900 can be brought into the thread path in the vicinity of the bobbin 33 for the piecing take-off from the maintenance device 2.
  • pulling off the thread 3 in the piecing phase exclusively by the bobbin 33 is particularly advantageous, since in this way no additional elements are required for the piecing draw-off, but a corresponding choice of the elastic element, for example, designed as a tension spring 7, is sufficient for this.
  • Such a modification with a pair of auxiliary take-off rollers 900 is described below with reference to FIGS. 3 and 4. Since such an embodiment is particularly expedient if it is used in connection with a thread connecting device 97 (e.g. knotter, splicing device, etc.), with the aid of which the thread connection (piecing) produced during piecing is replaced by another type of thread connection, this is used Modification described in connection with such a thread connecting device 97.
  • a thread connecting device 97 e.g. knotter, splicing device, etc.
  • the auxiliary take-off roller pair 900 - which is provided on the side of the take-off roller pair 13 facing away from the spinning rotor 11 - is located in the exemplary embodiment shown, like the various elements described below, on the maintenance device 2 and can be brought into its working position if necessary.
  • the thread 3 is inserted into the pair of auxiliary draw-off rollers, if this is in the vicinity of the course of the thread sucked into the suction tube 20, with the aid of means not shown and customary for such purposes.
  • the mouth 91 of a thread suction device 90 can be brought into the thread run so that it can take up the excess thread when the tension in the thread section between the auxiliary take-off roller pair 900 and the bobbin 33 decreases.
  • a cutting device 92 is assigned to the mouth 91 of this thread suction device 90 and can be controlled in a suitable manner.
  • the cutting device 92 is arranged on an arm 94 which can be pivoted about an axis 93, but it is also possible to fasten this device to the thread suction device 90 in front of the mouth 91.
  • On the side of the cutting device 92 facing away from the mouth 91 there is also a thread clamp 95 which, in the embodiment shown, is actuated together with the cutting device 92 with the aid of an electromagnet 96.
  • the thread connection device 97 already mentioned and designed, for example, as a knotter, is arranged in the thread run between the pair of draw-off rollers 13 and the auxiliary draw-off roller pair 900.
  • a thread storage device 98 is located between the pair of draw-off rollers 13 and the thread-connecting device 97.
  • a deflection element 99 is provided between the thread-connecting device 97 and the auxiliary draw-off roller pair 900, which deflects the thread extending to the bobbin 33 together with a suction nozzle 24 holds a precisely defined thread course.
  • This suction nozzle 24 can be brought into the position shown in FIG. 4 from a thread take-up position in which it receives the thread section extending from the bobbin 33 to the thread clamp 95.
  • the device shown in Figures 3 and 4 operates as follows: If a thread break occurs, the open-end spinning device in question is stopped and the maintenance device 2 is brought into the piecing position, as was discussed using the example in FIG. 1. The preparation and suction of the thread 3 into the suction tube 20 also take place in the manner described. When a sufficient length of thread has been sucked into the suction tube 20, so that it is ensured that the thread 3 is held securely by the suction tube 20, the thread 3 is inserted into the nip line of the auxiliary take-off roller pair 900 in the vicinity of the thread path by conventional means, not shown.
  • the thread still unwound by turning back the bobbin 33 is now taken up by the mouth 91 of the thread suction device 90 located in the vicinity of the thread run between the bobbin 33 and the auxiliary pulling roller pair 900 and is sucked off in the form of a loop 37.
  • the bobbin 33 is stopped and the thread 38 between the bobbin 33 and the mouth 91 is cut with the aid of the cutting device 92 and held by the thread clamp 95.
  • the suction nozzle 24 is now brought into the area of the thread path between the bobbin 33 and the thread clamp 95.
  • the backward rotation of the coil 33 is continued.
  • the thread clamp 95 releases the thread 38, which is now taken up by the suction nozzle 24. If the thread length taken up by the suction nozzle 24 ensures that the thread 38 is held securely even when the suction nozzle 24 is pivoted, it is brought into a position shortly after the pair of take-off rollers 13 - viewed in the direction of thread take-off from the thread take-off tube 12.
  • the thread deflecting element 99 is then pivoted into the course of the thread between the bobbin 33 and the suction nozzle 24, as a result of which the thread 38 is deflected.
  • the thread 3 which extends from the thread suction device 90 to the suction tube 20 and is inserted into the auxiliary take-off roller pair 900, is picked up by the auxiliary roller pair 21, brought to the length required for piecing and fed to the suction tube 12.
  • the auxiliary roller pair 21 and the auxiliary take-off roller pair 900 are now turned back simultaneously and synchronously, so that the thread 3 is returned to the spinning rotor 11.
  • the clamping of the auxiliary roller pair 21 is released, whereupon this auxiliary roller pair 21 can return to its starting position.
  • the clamping of the auxiliary take-off roller pair 900 whose direction of rotation is now reversed, is maintained.
  • the thread 3 is withdrawn again from the spinning rotor 11.
  • the thread 3 is fed to the thread suction device 90, which receives the spun thread 3.
  • the thread 3 is released over a very long length in the take-up phase.
  • the rotations in the thread 3 generated by the spinning rotor 11 rotating at full speed can thus be distributed over a long length, so that the resistance to the propagation of rotation down to the collecting surface (collecting groove), which is caused by the thread deflection at the mouth of the spinning rotor 11 Thread take-off tube 12 is generated, a substantially longer time is sufficient to prevent excessive rotation in the thread section located in the spinning rotor 11.
  • a more or less high speed of the spinning rotor 11 can be selected within certain maximum limits.
  • the suction nozzle 24 and the deflection element 99 assume such a position with respect to the course of the thread drawn out of the spinning rotor 11 by the auxiliary take-off roller pair 900 that the thread section between the suction nozzle 24 and the deflection element 99 runs essentially parallel to the thread section between the thread take-off tube 12 and the auxiliary take-off roller pair 900 .
  • the coil 33 is now stopped.
  • the thread store 98 is then pivoted into the course of the thread drawn out of the thread take-off tube 12 by the auxiliary take-off roller pair 900.
  • the thread connecting device 97 is then brought into the course of the threads 3 and 38. While the thread connection process is being carried out, both threads 3 and 38 must be stopped in its working area. This is done in that the thread quantity supplied by the spinning rotor 11 is temporarily stored by the thread store 98, while the thread 38 is stopped by the Coil 33 is not moved anyway. In the course of the thread connection process, the two threads extending to the thread suction device 90 and to the suction nozzle 24 are cut off and removed.
  • the thread connecting device 97 releases the thread which now extends again from the spinning rotor 11 to the bobbin.
  • the bobbin 33 is lowered onto the main drive roller 31 and driven again by it, the thread store 98 gradually being emptied again.
  • the deflecting element 99 now also releases the thread again, so that it resumes the thread path customary for production.
  • the cutting device 92 and the thread clamp 95 are not actuated. Simultaneously with the insertion of the piecing take-off by the auxiliary take-off roller pair 900 or shortly thereafter, the bobbin 33 is brought back into contact with the main drive roller 31 and the thread is released from the auxiliary take-off roller pair 900 in a manner known per se in a manner known per se.
  • the run-up speed can be freely selected; at high thread take-off speeds, however, it is expedient for the reasons already described if the run-up curve is adapted to the run-up curve of the fiber feed effective in the spinning rotor 11.
  • the spool lifting device 4 engages the spool arm 32 or an arm 35 attached to it and at the same time forms the support device 8, i.e. holds the bobbin 33 with its imaginary axis in a particular lifting position during the entire thread break repair.
  • the position of the swivel arm 50 of the auxiliary coil drive 5 changes in accordance with the coil size, so that the tension spring 7 also generates a different roller pressing force depending on the coil diameter.
  • only the radius of the coil 33 that is to say half its diameter, has an effect on the tension spring 7.
  • the coil 33 is assigned a light barrier monitoring, it can also be used to lift the coil 33 so that the distance a between the circumference of the coil 33 and the circumference of the main drive roller 31 is always the same regardless of the coil diameter. In this way, as in the exemplary embodiment described with reference to FIG. 1, the entire diameter of the coil 33 can be used for changing the spring tension.
  • Such light barrier monitoring can also be used when a support device 8 is provided, but does not have separate drive and support levers.
  • a switching device is provided, which in the embodiment shown is designed as a switch 85. If desired, a shift linkage can also be provided in its place, which causes the drive lever 80 to be uncoupled from the motor 86 and fixed in its current position (for example with the aid of a pawl).
  • the stops 82 and 83 can either be arranged on the drive lever 80 or on the support lever 81 or can be divided between the two levers.
  • the support device 8 does not have to be supported on an additional arm 35 of the coil arm 32, but can also engage the same or an extension thereof.
  • FIG. 2 shows a further modification of the device, in which a torsion spring 70 is provided, one leg 71 of which is supported on the swivel arm 50 and the other leg 72 of which is supported on a bearing 54 which receives the axis 51 of the swivel arm 50. As Figure 2 shows, such an embodiment is particularly compact.
  • the roller 52 in the embodiment described has a jacket 53 made of soft rubber or another material. This results in an enlargement of the contact surface of the roller 52 on the spool 33, since the jacket 53 seeks to laterally avoid the contact pressure acting on it.
  • the roller 52 can, despite having a good drive took even have a smooth surface, so that the wound on the coil 33 material is treated gently compared to, for example, a completely made of metal and the circumference with a corrugation or the like. Roll, which is of course also possible.
  • the various elements - such as intake manifold 20, swivel arm 50 and drive lever 80 or the elements not shown - can be driven in various ways, for example with the aid of pneumatic or hydraulic pistons.
  • the design shown with an adjustable intermediate linkage 64, 65, 66, 67, 68 is particularly advantageous if the engine 60 drives various cam disks 62 via the camshaft 61, for example for the movement of the suction tube 20 and / or for the pivoting of the auxiliary roller pair 21 and / or for lifting the pressure roller from the driven roller of the pair of take-off rollers 13.
  • the intermediate linkage 64, 65, 66, 67, 68 enables the individual drives to be adapted to the working conditions in a particularly simple manner, in particular if the dimensions are as equal as possible the individual parts of this intermediate linkage are to be provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP87115943A 1982-01-26 1982-12-20 Procédé et dispositif de rattache pour machine de filature à bout libre Expired - Lifetime EP0274016B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3202428A DE3202428C2 (de) 1982-01-26 1982-01-26 Verfahren und Vorrichtung zum Anspinnen eines Fadens in einer Offenend-Spinnvorrichtung
DE3202428 1982-01-26

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP82111829.6 Division 1982-12-20
EP82111829A Division EP0084659B1 (fr) 1982-01-26 1982-12-20 Procédé et dispositif de rattachage d'un fil dans un métier à filer à bout ouvert

Publications (4)

Publication Number Publication Date
EP0274016A2 true EP0274016A2 (fr) 1988-07-13
EP0274016A3 EP0274016A3 (en) 1988-08-03
EP0274016B1 EP0274016B1 (fr) 1990-07-04
EP0274016B2 EP0274016B2 (fr) 1993-08-25

Family

ID=6153944

Family Applications (2)

Application Number Title Priority Date Filing Date
EP87115943A Expired - Lifetime EP0274016B2 (fr) 1982-01-26 1982-12-20 Procédé et dispositif de rattache pour machine de filature à bout libre
EP82111829A Expired EP0084659B1 (fr) 1982-01-26 1982-12-20 Procédé et dispositif de rattachage d'un fil dans un métier à filer à bout ouvert

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP82111829A Expired EP0084659B1 (fr) 1982-01-26 1982-12-20 Procédé et dispositif de rattachage d'un fil dans un métier à filer à bout ouvert

Country Status (11)

Country Link
US (1) US4644742A (fr)
EP (2) EP0274016B2 (fr)
JP (2) JPS58174638A (fr)
CS (1) CS277393B6 (fr)
CZ (1) CZ277680B6 (fr)
DE (1) DE3202428C2 (fr)
GB (2) GB2115020B (fr)
HK (2) HK7587A (fr)
IN (1) IN160080B (fr)
MY (2) MY8700268A (fr)
SG (1) SG87486G (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0401516A1 (fr) * 1989-06-09 1990-12-12 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Dispositif et procédé pour rattacher le fil sur un métier à filer à bout libre
EP0417599A2 (fr) * 1989-09-09 1991-03-20 W. SCHLAFHORST AG & CO. Procédé et dispositif pour le transfert du fil aux postes de bobinage d'une machine textile
EP0473212A1 (fr) * 1990-08-01 1992-03-04 SAVIO MACCHINE TESSILI S.r.l. Dispositif et procédé pour attraper et préparer le bout du fil pour le rattacher dans un métier à filer à bout libre
EP0826804A1 (fr) * 1996-08-24 1998-03-04 Rieter Ingolstadt Spinnereimaschinenbau AG Méthode et dispositif pour rattacher un fil dans un métier à filer à bout ouvert
EP1445360A2 (fr) * 2003-02-06 2004-08-11 Rieter Ingolstadt Spinnereimaschinenbau AG Procédé et dispositif pour rattacher un fil dans un métier à filer à bout libre

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3246993A1 (de) * 1982-12-18 1984-06-20 Schubert & Salzer Maschinen Verfahren und vorrichtung zum anspinnen eines fadens in einer offenend-spinnvorrichtung
DE3418780A1 (de) * 1984-05-19 1985-11-21 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Verfahren und vorrichtung zum vorbereiten eines abgelaengten fadenendes zum wiederanspinnen einer offenend-spinnvorrichtung
DE3536850A1 (de) * 1985-10-16 1987-04-23 Zinser Textilmaschinen Gmbh Verfahrbare wartungseinrichtung fuer eine spinnmaschine
GB2192906B (en) * 1986-06-30 1988-06-29 Rieter Ag Maschf Open-end yarn piecer
DE3635510C2 (de) * 1986-10-18 1995-10-26 Schlafhorst & Co W Verfahren und Einrichtung zur Außerbetriebnahme und darauffolgenden Wiederinbetriebnahme einer OE-Rotorspinnmaschine
GB2199342A (en) * 1987-02-18 1988-07-06 Hollingsworth Uk Ltd Servicing robot for spinning machine
DE3719676C1 (de) * 1987-06-12 1988-09-29 Schubert & Salzer Maschinen Steuervorrichtung zum Antreiben und Stillsetzen eines Offenend-Spinnelementes
DE3814966A1 (de) * 1988-05-03 1989-11-16 Schubert & Salzer Maschinen Verfahren und vorrichtung zum anspinnen einer offenend-spinnvorrichtung
US5170953A (en) * 1988-08-12 1992-12-15 Hans Stahlecker Servicing apparatus which can be moved along a spinning machine and has devices for seeking a yarn end from a spool package
DE3936748A1 (de) * 1989-05-05 1990-11-08 Schubert & Salzer Maschinen Verfahren und vorrichtung zum anspinnen eines fadens an einer mit einem spinnrotor arbeitenden offenend-spinnvorrichtung
US5414985A (en) * 1991-03-01 1995-05-16 Schubert & Salzer Maschinenfabrik Ag Process and apparatus for piecing a thread in open-end spinning
IT1258920B (it) * 1991-05-11 1996-03-01 Procedimento e dispositivo per l'allacciamento del filo di un dispositivo di filatura ad estremita' aperta
DE4131179C2 (de) * 1991-09-19 1996-12-05 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Stillsetzen einer Aufwickelspule
DE59300625D1 (de) * 1992-08-07 1995-10-26 Rieter Ingolstadt Spinnerei Verfahren zum Betrieb einer Offenend-Spinnvorrichtung.
DE9317052U1 (de) * 1993-11-08 1994-01-13 Schlafhorst & Co W Antriebsrolle für den rotatorischen Friktionsantrieb einer Textilspule
DE4404538C1 (de) * 1994-02-12 1995-04-27 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Anspinnen einer Offenend-Spinnvorrichtung
CZ66095A3 (en) * 1995-03-14 1996-07-17 Rieter Elitex As Method of positioning searching nozzle mouth against bobbin circumference and handling device for making the same
DE10217243B4 (de) * 2002-04-15 2012-05-03 Rieter Ingolstadt Gmbh Verfahren zum Anspinnen eines Fadens an einer Offenend-Spinnvorrichtung
US8167783B2 (en) * 2006-04-11 2012-05-01 Pack-Tiger Gmbh Machine for the manufacture of paper padding
JP2019034814A (ja) * 2017-08-16 2019-03-07 村田機械株式会社 糸巻取ユニット

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2008142A1 (de) 1969-02-25 1970-09-24 K.K. Toyoda, Jidoshokki Seisakusho, Kariya City, Aichi (Japan) Verfahren und Vorrichtung zum automatischen Faden-Anstücken in kontinuierlich arbeitenden ringlosen Spinnmaschinen
DE1560336A1 (de) 1965-09-06 1970-10-22 Vyzk Ustav Bavlnarsky Vorrichtung zum Abzug des Garnes aus der Spinnvorrichtung einer Spinnanlage

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3695017A (en) * 1969-03-15 1972-10-03 Daiwa Spinning Co Ltd Automatic yarn piecing apparatus for spindleless spinning machine
BE759650A (fr) * 1969-12-03 1971-04-30 Schubert & Salzer Maschinen Procede et dispositif pour la filature de rubans de fibres
DE2039473C3 (de) * 1970-08-08 1979-04-26 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Offenendspinnmaschine
DE2130690A1 (de) * 1971-06-21 1972-12-28 Skf Kugellagerfabriken Gmbh Verfahren und Vorrichtung zum Wiederanspinnen eines gebrochenen Fadens in einer Offen-Ende-Spinnvorrichtung
DE2242151C3 (de) * 1972-08-26 1980-02-28 Karl 5600 Wuppertal Bous Vorrichtung zum Offenendspinnen
DE2321775C3 (de) * 1973-04-30 1979-07-05 Fritz 7341 Bad Ueberkingen Stahlecker Längs einer Offenendspinnmaschine verfahrbare Vorrichtung zum Anspinnen
DE2458042C2 (de) * 1974-12-07 1985-06-05 Stahlecker, Fritz, 7347 Bad Überkingen Offenend-Spinnmaschine mit einer Vielzahl von Spinnstellen und einem verfahrbaren Wartungsgerät zum Anspinnen nach einem Fadenbruch
DE2541589A1 (de) * 1975-09-18 1977-03-24 Schlafhorst & Co W Vorrichtung zum selbsttaetigen anspinnen
DE2620806C2 (de) * 1976-05-11 1986-04-17 Fritz 7347 Bad Überkingen Stahlecker Verfahren zum Übergeben eines laufenden Fadens von einer Anspinnvorrichtung an ein Spinnaggregat
DE2620805C2 (de) * 1976-05-11 1986-02-13 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und Vorrichtung zum Anspinnen eines Fadens
DE2625179A1 (de) * 1976-06-04 1977-12-15 Stahlecker Fritz Offenend-spinnmaschine mit einer verfahrbaren anspinnvorrichtung
DE2728003C2 (de) * 1977-06-22 1986-12-18 Stahlecker, Fritz, 7347 Bad Überkingen Entlang einer Offenend-Spinnmaschine verfahrbare Anspinneinrichtung
DE2850729C2 (de) * 1978-11-23 1986-03-13 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und Vorrichtung zum Anspinnen eines Fadens
DE2910814A1 (de) * 1979-03-20 1980-10-02 Stahlecker Fritz Verfahren und offenend-spinnmaschine zum anspinnen eines fadens an einem spinnaggregat

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1560336A1 (de) 1965-09-06 1970-10-22 Vyzk Ustav Bavlnarsky Vorrichtung zum Abzug des Garnes aus der Spinnvorrichtung einer Spinnanlage
DE2008142A1 (de) 1969-02-25 1970-09-24 K.K. Toyoda, Jidoshokki Seisakusho, Kariya City, Aichi (Japan) Verfahren und Vorrichtung zum automatischen Faden-Anstücken in kontinuierlich arbeitenden ringlosen Spinnmaschinen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0401516A1 (fr) * 1989-06-09 1990-12-12 Schubert & Salzer Maschinenfabrik Aktiengesellschaft Dispositif et procédé pour rattacher le fil sur un métier à filer à bout libre
EP0417599A2 (fr) * 1989-09-09 1991-03-20 W. SCHLAFHORST AG & CO. Procédé et dispositif pour le transfert du fil aux postes de bobinage d'une machine textile
EP0417599A3 (en) * 1989-09-09 1992-01-02 W. Schlafhorst Ag & Co. Method and apparatus for transferring a yarn to a winding station of a textile machine
EP0473212A1 (fr) * 1990-08-01 1992-03-04 SAVIO MACCHINE TESSILI S.r.l. Dispositif et procédé pour attraper et préparer le bout du fil pour le rattacher dans un métier à filer à bout libre
EP0826804A1 (fr) * 1996-08-24 1998-03-04 Rieter Ingolstadt Spinnereimaschinenbau AG Méthode et dispositif pour rattacher un fil dans un métier à filer à bout ouvert
EP1445360A2 (fr) * 2003-02-06 2004-08-11 Rieter Ingolstadt Spinnereimaschinenbau AG Procédé et dispositif pour rattacher un fil dans un métier à filer à bout libre
EP1445360A3 (fr) * 2003-02-06 2005-04-06 Rieter Ingolstadt Spinnereimaschinenbau AG Procédé et dispositif pour rattacher un fil dans un métier à filer à bout libre

Also Published As

Publication number Publication date
IN160080B (fr) 1987-06-27
CZ277680B6 (en) 1993-03-17
CS277393B6 (en) 1993-03-17
EP0084659B1 (fr) 1989-02-22
JPH0418048B2 (fr) 1992-03-26
HK7587A (en) 1987-01-28
JPH0316405B2 (fr) 1991-03-05
GB8410854D0 (en) 1984-06-06
EP0084659A2 (fr) 1983-08-03
EP0084659A3 (en) 1985-12-04
CS53588A3 (en) 1991-11-12
EP0274016B2 (fr) 1993-08-25
DE3202428C2 (de) 1986-06-05
CS51383A3 (en) 1992-09-16
GB2115020A (en) 1983-09-01
JPS58174638A (ja) 1983-10-13
JPH0376829A (ja) 1991-04-02
GB2115020B (en) 1986-06-11
SG87486G (en) 1987-03-27
GB8302075D0 (en) 1983-03-02
GB2138849A (en) 1984-10-31
GB2138849B (en) 1986-06-18
DE3202428A1 (de) 1983-08-11
MY8700335A (en) 1987-12-31
US4644742A (en) 1987-02-24
EP0274016A3 (en) 1988-08-03
HK9487A (en) 1987-02-06
MY8700268A (en) 1987-12-31
EP0274016B1 (fr) 1990-07-04

Similar Documents

Publication Publication Date Title
EP0274016B1 (fr) Procédé et dispositif de rattache pour machine de filature à bout libre
EP0528884B1 (fr) Procede et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile
DE3706728C2 (fr)
EP0325992B1 (fr) Procédé et dispositif pour remettre en marche l'opération de filature après une interruption
DE3123494C2 (de) Verfahren und Vorrichtung zum Aufwinden eines neu angesponnenen Fadens auf eine in eine Spulvorrichtung eingelegte Leerhülse
DE3903782C2 (de) Verfahren zum Anspinnen einer Offenend-Spinnvorrichtung und Offenend-Spinnmaschine mit einer Einrichtung zum Anspinnen einzelner oder mehrerer Spinnvorrichtungen
DE3501875A1 (de) Verfahren zum ansetzen eines neuen faserbandes bei einer oe-spinnvorrichtung
DE3337120A1 (de) Verfahren zum garnandrehen in einer offen-end-spinnmaschine
DE2543986A1 (de) Verfahren und vorrichtung zur sicherung einer reservewicklung auf einer spulenhuelse
EP2192213A1 (fr) Agrégat de service pour alimenter les postes de travail d'un métier à filer open end
DE2758064B2 (de) Verfahren und Vorrichtung zum Beseitigen einer Unregelmäßigkeit im Faden an einer Spinnstelle einer Offen-End-Spinnvorrichtung
CH635375A5 (de) Verfahren und vorrichtung zum individuellen anspinnen einzelner offenend-spinnvorrichtungen.
DE2337246C3 (de) Anspinnverfahren und Vorrichtung für das Offenend-Spinnen
DE4418743C2 (de) Verfahren zum pneumatischen Aufnehmen des Endes eines auf einer Spule aufgewickelten Fadens
EP0036066B1 (fr) Dispositif pour interrompre l'arrivée du ruban de fibres d'un dispositif à filer à bout libéré
EP0395880A1 (fr) Procédé et dispositif pour le rattachement de fil dans un métier à filer à bout libre ayant un rotor de filage
DE2455913A1 (de) Spinnmaschine und verfahren zum spulenwechseln
DE4321440C2 (de) Verfahren und Vorrichtung zum Anspinnen einer Offenend-Spinnvorrichtung
DE2558419A1 (de) Offen-end-spinnvorrichtung
EP0258248B1 (fr) Procede et dispositif pour rattacher les fils sur une installation de filage a fibres liberees a friction
CH680068A5 (fr)
CH684790A5 (de) Verfahren zur Reinigung von Garnfehlern an einer Spulstelle.
DE3246993A1 (de) Verfahren und vorrichtung zum anspinnen eines fadens in einer offenend-spinnvorrichtung
DE3522517C2 (fr)
DE4214734A1 (de) Verfahren und vorrichtung zum anspinnen einer offenend-spinnvorrichtung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AC Divisional application: reference to earlier application

Ref document number: 84659

Country of ref document: EP

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): CH FR IT LI

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): CH FR IT LI

17P Request for examination filed

Effective date: 19880628

ITCL It: translation for ep claims filed

Representative=s name: ZINI MARANESI

EL Fr: translation of claims filed
17Q First examination report despatched

Effective date: 19891002

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C. S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AC Divisional application: reference to earlier application

Ref document number: 84659

Country of ref document: EP

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH FR IT LI

ET Fr: translation filed
ET1 Fr: translation filed ** revision of the translation of the patent or the claims
ITTA It: last paid annual fee
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: W. SCHLAFHORST & CO.

Effective date: 19910403

Opponent name: WILHELM STAHLECKER GMBH

Effective date: 19910329

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: RIETER INGOLSTADT SPINNEREIMASCHINENBAU AKTIENGESE

ITF It: translation for a ep patent filed

Owner name: ING. ZINI MARANESI & C.

27A Patent maintained in amended form

Effective date: 19930825

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): CH FR IT LI

ET3 Fr: translation filed ** decision concerning opposition
REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

REG Reference to a national code

Ref country code: CH

Ref legal event code: PUE

Owner name: RIETER INGOLSTADT SPINNEREIMASCHINENBAU AG

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19931125

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19940124

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19941231

Ref country code: CH

Effective date: 19941231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST