EP0084659A2 - Procédé et dispositif de rattachage d'un fil dans un métier à filer à bout ouvert - Google Patents

Procédé et dispositif de rattachage d'un fil dans un métier à filer à bout ouvert Download PDF

Info

Publication number
EP0084659A2
EP0084659A2 EP82111829A EP82111829A EP0084659A2 EP 0084659 A2 EP0084659 A2 EP 0084659A2 EP 82111829 A EP82111829 A EP 82111829A EP 82111829 A EP82111829 A EP 82111829A EP 0084659 A2 EP0084659 A2 EP 0084659A2
Authority
EP
European Patent Office
Prior art keywords
thread
auxiliary
spinning
coil
open
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
EP82111829A
Other languages
German (de)
English (en)
Other versions
EP0084659A3 (en
EP0084659B1 (fr
Inventor
Kurt Lovas
Walter Mayer
Stephan Wittmann
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
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=EP0084659(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
Publication of EP0084659A2 publication Critical patent/EP0084659A2/fr
Publication of EP0084659A3 publication Critical patent/EP0084659A3/de
Application granted granted Critical
Publication of EP0084659B1 publication Critical patent/EP0084659B1/fr
Expired 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 a thread in an open-end spinning device, in which the thread is returned to the open-end spinning device by turning back a bobbin and an auxiliary roller pair and then drawn off from the open-end spinning device by a pair of take-off rollers, and a device to carry out this procedure.
  • the object of the invention is therefore to provide a method and a device which avoid these disadvantages and ensure a defined insertion of the thread take-off during piecing even at a large number of spinning positions.
  • the thread is released by the pair of auxiliary rollers after completion of the return delivery and is subjected to an auxiliary trigger at a greater distance from the open-end spinning device than this spinning trigger until the normal spinning take-off has started.
  • the auxiliary trigger is carried out exclusively by the spool.
  • the softer insertion of the thread take-off can be brought about by a certain but defined slip of the bobbin.
  • This slip is also advantageous because when spinning, the fiber delivery into the spinning rotor - or another open-end spinning element - does not suddenly occur, but rather increases.
  • the thread is transferred to the pair of draw-off rollers. Since the thread is already being drawn off the open-end spinning device at full speed at this point, there are no speed jumps here either, so that there is no risk of thread breaks at this point either.
  • the piecing take-off be carried out by the coil, but it is quite possible and in connection with further operations which are associated with. the piecing must be carried out, often extremely useful if the auxiliary trigger is independent of the spool.
  • the auxiliary draw is expediently kept in a substantially constant ratio to the run-up curve of the fiber feed effective in the open-end spinning device.
  • the return delivery time is reduced to a minimum time. This is achieved according to the invention in that before the return of the thread a thread reserve is formed over a throwing device and the thread end to be fed to the open-end spinning device is brought to a defined length in that the return delivery of the thread end by the auxiliary roller pair is merely in a ready position within the open-end spinning device takes place and that after the thread has been released by the pair of auxiliary rollers, the piecing back delivery takes place by the thread being thrown off by the throwing member.
  • the spinning element for example a spinning rotor
  • the spinning element can be exchanged so that collecting surfaces of different diameters are used, it is necessary to coordinate the return delivery route accordingly.
  • the actual piecing return should always take place under constant conditions. Therefore, according to the invention, the adaptation to the different diameters is not carried out by the throwing device, but by the pair of auxiliary rollers. This is done according to another feature of Invention in that the ready position within the open-end spinning device is selected so that regardless of the diameter of the spinning member selected in each case, the path of piecing back delivery by throwing the thread is always the same.
  • one method according to the invention is to carry out the method mentioned
  • 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 rollers. With this auxiliary take-off device, the piecing take-off can be carried out in the desired manner.
  • the auxiliary take-off device is arranged at a greater distance from the open-end spinning device than the pair of draw-off rollers, the rotation which arises in the piecing phase can be distributed over a greater length of the thread, so that the risk of overturning of the piecing thread end in the spinning rotor is reduced.
  • This makes it possible to work with significantly higher rotor speeds compared to conventional piecing processes. This means that it is usually not necessary to keep the spinning rotor at a low speed for the piecing process or to monitor its speed, but rather allows piecing at the high production rotor speeds customary today.
  • a winding device which has bobbin arms for receiving a bobbin, with a main drive roller for driving the bobbin and with a device for lifting the bobbin from the main drive roller and for driving the bobbin
  • this device having a swivel arm and one in both directions gene drivable roller and a working against the action of an elastic element controllable swivel drive for the swivel arm
  • the auxiliary trigger device is formed by the winding device, the device for lifting and driving the coil from a coil lifting device to form a defined distance between the coil and the main drive roller and consists of a coil auxiliary drive which can be brought into action by the action of the elastic element on the side of the coil which is remote from the main drive roller.
  • the bobbin lifting device lifts the bobbin off the main drive roller immediately 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. But even if the thread comes onto the bobbin, it can easily be picked up here when the bobbin is later turned back, since the rapid stoppage of the bobbin prevents the thread from being rolled tightly into the bobbin.
  • the bobbin lifting device is designed so that a defined distance is formed between the bobbin and the main drive roller, so that the instantaneous radius of the bobbin affects the working position of the bobbin auxiliary drive, which cooperates with the side of the bobbin facing away from the main drive roller. In this way, depending on the size of the coil, different positions of the swivel arm of the coil auxiliary drive are obtained when driving the coil.
  • the swivel drive is designed so that it causes the roller to be lifted off the spool, while when the swivel arm is released by the swivel drive, the elastic element causes the roller to rest against the spool. Because the position of the reel on the spool varies depending on the spool radius is, the elastic element has a different bias during the work of the roller, so that the roller is also applied to the coil with different force.
  • the elastic element By a suitable choice of the characteristics of the elastic element, for example when the elastic element is designed as a spring by appropriate choice of the spring constants, dimensions and pretension, it can be achieved that a slip which is normally different in the case of coils of different sizes is avoided, so that essentially one regardless of the coil diameter always the same slip and thus always the same piecing conditions can be achieved.
  • the spool lifting device is designed such that it forms a defined distance between the peripheral surfaces of the spool and the main drive roller. In this way, the pretension of the elastic element is affected by the full spool diameter, which makes it much easier to compensate for the different spool masses by means of different contact pressures on the roll.
  • the defined distance between the peripheral surfaces of the spool and the main drive roller can be achieved in various ways.
  • the bobbin lifting device expediently has a lifting element which cooperates with the side of the bobbin facing the main drive roller, the bobbin lifting device being assigned a supporting device which cooperates with a bobbin arm and secures the defined distance between the peripheral surfaces of the bobbin and the main drive roller. Since the lifting element of the coil lifting device faces that of the main drive roller Side of the coil cooperates, the defined distance between the circumferential surfaces of the coil and the main drive roller can be reached in a particularly simple manner. Monitoring devices for checking this distance, such as light barriers susceptible to flight, are therefore not required.
  • the support device cooperating with a spool arm is provided according to the invention, which ensures the defined distance between the peripheral surfaces of the spool and the main drive roller, even when the lifting element releases the spool again.
  • 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, which is acted upon by an elastic element in the direction of the coil and can thereby be brought into its first end position and when it runs onto one of the two coil arms into its second end position, which is assigned a switching device for ending the pivoting movement of the drive lever is.
  • the switching device is actuated mechanically in this way.
  • 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.
  • the end positions of the support lever are expediently determined by two stops attached to the drive lever.
  • the elastic element assigned to the swivel arm can be designed differently, but in order to achieve a compact design of the coil auxiliary drive, it is preferred according to the invention that the elastic element assigned to the swivel arm is designed as a torsion spring.
  • the swivel drive for the swivel arm has a rotatable cam disk and an adjustable intermediate linkage between the cam disk and swivel arm. This intermediate linkage enables the swivel arm to be adjusted in a particularly simple manner.
  • the roll has a jacket made of a soft material, preferably soft rubber.
  • the auxiliary take-off device is formed by a second auxiliary take-off roller pair, which can be brought into effect on the side of the take-off roller pair facing away from the open-end spinning device.
  • the return delivery takes place in two steps.
  • a pair of thread cutting devices and a return delivery measuring device are assigned to the pair of auxiliary rollers, while a thread-throwing element deflecting the thread is arranged between the pair of draw-off rollers and the bobbin.
  • the thread cutting device and the return delivery measuring device have the task of bringing the thread to a defined length and into a predetermined ready position, while the ejection device enables the thread to come into contact with the fibers fed to the open-end spinning device.
  • the return delivery measuring device is dependent on the respectively selected diameter of the spinning element is adjustable.
  • 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 lifting element 40 is also provided for each spinning station, which, by being inserted between the main drive roller 31 and the spool 33, lifts the latter by a certain value a from 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 auxiliary roller pair 21 can grip the thread 3 arranged tendon-like to the suction tube 20 and feed it to the take-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 essentially consists of a pivotably mounted drive lever 80, at the free end of which a support lever 81 is articulated.
  • This two-arm support lever 81 is movable between two stops 82 and 83 attached to the drive lever 80 and is activated by means of a compression spring 84 trained elastic element, 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 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 pipe 20 is located on the underside of the coil 33, so that the distance between the suction pipe 20 and the coil 33 is essentially always the same, regardless of the sink 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 dashed 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 turning 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 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 arrives at the ejection element 25.
  • 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.
  • 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 .
  • 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 negative pressure 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 to 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 from the standby position B 1 along the thread withdrawal path from the collecting surface - ie 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.
  • the timing relay is set to a longer time adapted to the larger rotor diameter, so that the auxiliary roller pair 21 thread 3 to the standby position B 2 supplies.
  • the actual piecing back delivery takes place again by means of the ejection device 25 described.
  • 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 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.
  • 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 can also be lifted in such a way 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.
EP82111829A 1982-01-26 1982-12-20 Procédé et dispositif de rattachage d'un fil dans un métier à filer à bout ouvert Expired EP0084659B1 (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 Child Applications (2)

Application Number Title Priority Date Filing Date
EP87115943.0 Division-Into 1982-12-20
EP87115943A Division EP0274016B2 (fr) 1982-01-26 1982-12-20 Procédé et dispositif de rattache pour machine de filature à bout libre

Publications (3)

Publication Number Publication Date
EP0084659A2 true EP0084659A2 (fr) 1983-08-03
EP0084659A3 EP0084659A3 (en) 1985-12-04
EP0084659B1 EP0084659B1 (fr) 1989-02-22

Family

ID=6153944

Family Applications (2)

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
EP87115943A Expired - Lifetime EP0274016B2 (fr) 1982-01-26 1982-12-20 Procédé et dispositif de rattache pour machine de filature à bout libre

Family Applications After (1)

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

Country Status (11)

Country Link
US (1) US4644742A (fr)
EP (2) EP0084659B1 (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) MY8700335A (fr)
SG (1) SG87486G (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010990A1 (fr) * 1988-05-03 1989-11-16 Schubert & Salzer Maschinenfabrik Aktiengesellscha Procede et dispositif permettant de commencer une nouvelle filee dans un dispositif de filage open-end
EP0395880A1 (fr) * 1989-05-05 1990-11-07 Rieter Ingolstadt Spinnereimaschinenbau AG Procédé et dispositif pour le rattachement de fil dans un métier à filer à bout libre ayant un rotor de filage

Families Citing this family (23)

* 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
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
DE3918946A1 (de) * 1989-06-09 1990-12-13 Schubert & Salzer Maschinen Vorrichtung und verfahren zum anspinnen eines fadens an einer offenend-spinnvorrichtung
DE3930136A1 (de) * 1989-09-09 1991-03-21 Schlafhorst & Co W Verfahren und einrichtung zur uebergabe eines fadens an eine spulstelle einer textilmaschine
IT1243473B (it) * 1990-08-01 1994-06-15 Savio Spa Dispositivo e procedimento per la captazione e la preparazione del bandolo per il riattacco in un filatoio open-end
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
CZ281245B6 (cs) * 1995-03-14 1996-07-17 Maschinenfabrik Rieter Ag Způsob ustavování ústí vyhledávací hubice proti obvodu cívky a obslužné zařízení k provádění tohoto způsobu
DE19634300A1 (de) * 1996-08-24 1998-02-26 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Anspinnen eines Fadens an einer Offenend-Spinnvorrichtung
DE10217243B4 (de) * 2002-04-15 2012-05-03 Rieter Ingolstadt Gmbh Verfahren zum Anspinnen eines Fadens an einer Offenend-Spinnvorrichtung
DE10304729A1 (de) * 2003-02-06 2004-08-19 Rieter Ingolstadt Spinnereimaschinenbau Ag Verfahren und Vorrichtung zum Anspinnen eines Fadens in 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 (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2104128A5 (fr) * 1970-08-08 1972-04-14 Zinser Textilmaschinen Gmbh
DE2625179A1 (de) * 1976-06-04 1977-12-15 Stahlecker Fritz Offenend-spinnmaschine mit einer verfahrbaren anspinnvorrichtung
DE2728003A1 (de) * 1977-06-22 1979-01-18 Fritz Stahlecker Entlang einer offenend-spinnmaschine verfahrbare anspinneinrichtung
DE2910814A1 (de) * 1979-03-20 1980-10-02 Stahlecker Fritz Verfahren und offenend-spinnmaschine zum anspinnen eines fadens an einem spinnaggregat

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT260075B (de) 1965-09-06 1968-02-12 Vyzk Ustav Bavlnarsky Vorrichtung zum Abzug des Garnes aus der Spinnvorrichtung einer Spinnanlage
CH508745A (de) * 1969-02-25 1971-06-15 Toyoda Automatic Loom Works Verfahren zum automatischen Anspinnen eines Fadens nach einem Fadenbruch an einer Spinnstelle einer ringlosen Spinnmaschine und Spinnmaschine zu dessen Durchführung
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
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
DE2620805C2 (de) * 1976-05-11 1986-02-13 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und Vorrichtung zum Anspinnen eines Fadens
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
DE2850729C2 (de) * 1978-11-23 1986-03-13 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und Vorrichtung zum Anspinnen eines Fadens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2104128A5 (fr) * 1970-08-08 1972-04-14 Zinser Textilmaschinen Gmbh
DE2625179A1 (de) * 1976-06-04 1977-12-15 Stahlecker Fritz Offenend-spinnmaschine mit einer verfahrbaren anspinnvorrichtung
DE2728003A1 (de) * 1977-06-22 1979-01-18 Fritz Stahlecker Entlang einer offenend-spinnmaschine verfahrbare anspinneinrichtung
DE2910814A1 (de) * 1979-03-20 1980-10-02 Stahlecker Fritz Verfahren und offenend-spinnmaschine zum anspinnen eines fadens an einem spinnaggregat

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989010990A1 (fr) * 1988-05-03 1989-11-16 Schubert & Salzer Maschinenfabrik Aktiengesellscha Procede et dispositif permettant de commencer une nouvelle filee dans un dispositif de filage open-end
EP0395880A1 (fr) * 1989-05-05 1990-11-07 Rieter Ingolstadt Spinnereimaschinenbau AG Procédé et dispositif pour le rattachement de fil dans un métier à filer à bout libre ayant un rotor de filage

Also Published As

Publication number Publication date
JPH0316405B2 (fr) 1991-03-05
DE3202428C2 (de) 1986-06-05
GB2115020A (en) 1983-09-01
JPH0418048B2 (fr) 1992-03-26
EP0084659A3 (en) 1985-12-04
GB2138849A (en) 1984-10-31
CS53588A3 (en) 1991-11-12
HK9487A (en) 1987-02-06
CZ277680B6 (en) 1993-03-17
JPH0376829A (ja) 1991-04-02
EP0274016A2 (fr) 1988-07-13
GB8302075D0 (en) 1983-03-02
US4644742A (en) 1987-02-24
GB8410854D0 (en) 1984-06-06
IN160080B (fr) 1987-06-27
MY8700268A (en) 1987-12-31
GB2138849B (en) 1986-06-18
JPS58174638A (ja) 1983-10-13
CS277393B6 (en) 1993-03-17
GB2115020B (en) 1986-06-11
MY8700335A (en) 1987-12-31
EP0084659B1 (fr) 1989-02-22
EP0274016A3 (en) 1988-08-03
EP0274016B1 (fr) 1990-07-04
CS51383A3 (en) 1992-09-16
SG87486G (en) 1987-03-27
HK7587A (en) 1987-01-28
EP0274016B2 (fr) 1993-08-25
DE3202428A1 (de) 1983-08-11

Similar Documents

Publication Publication Date Title
EP0084659B1 (fr) Procédé et dispositif de rattachage d'un fil dans un métier à filer à bout ouvert
EP0528884B1 (fr) Procede et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile
DE3706728C2 (fr)
EP2184387B1 (fr) Procédé de fonctionnement d'une bobineuse à extrémité ouverte et bobineuse à extrémité ouverte
EP0069205B1 (fr) Procédé et dispositif pour l'échange d'une bobine pleine contre une bobine vide dans un dispositif de bobinage d'un appareil de filature à extrémité ouverte
DE3515765C2 (fr)
DE3903782C2 (de) Verfahren zum Anspinnen einer Offenend-Spinnvorrichtung und Offenend-Spinnmaschine mit einer Einrichtung zum Anspinnen einzelner oder mehrerer Spinnvorrichtungen
DE2543986A1 (de) Verfahren und vorrichtung zur sicherung einer reservewicklung auf einer spulenhuelse
DE2758064B2 (de) Verfahren und Vorrichtung zum Beseitigen einer Unregelmäßigkeit im Faden an einer Spinnstelle einer Offen-End-Spinnvorrichtung
EP2192213A1 (fr) Agrégat de service pour alimenter les postes de travail d'un métier à filer open end
CH635375A5 (de) Verfahren und vorrichtung zum individuellen anspinnen einzelner offenend-spinnvorrichtungen.
EP0036066B1 (fr) Dispositif pour interrompre l'arrivée du ruban de fibres d'un dispositif à filer à bout libéré
DE2337246C3 (de) Anspinnverfahren und Vorrichtung für das Offenend-Spinnen
DE4418743C2 (de) Verfahren zum pneumatischen Aufnehmen des Endes eines auf einer Spule aufgewickelten Fadens
EP0395880A1 (fr) Procédé et dispositif pour le rattachement de fil dans un métier à filer à bout libre ayant un rotor de filage
EP0498204B1 (fr) Procédé et dispositif pour bobiner un fil à un métier à filer et bobinoir
DE3813368C2 (de) Verfahren und Vorrichtung zum Erzeugen von Spulen
DE2558419A1 (de) Offen-end-spinnvorrichtung
EP0258248B1 (fr) Procede et dispositif pour rattacher les fils sur une installation de filage a fibres liberees a friction
DE2455913A1 (de) Spinnmaschine und verfahren zum spulenwechseln
CH680068A5 (fr)
EP0388938A1 (fr) Procédé pour faire fonctionner un métier à filer et robot de manipulation pour la mise en oeuvre de ce procédé
DE3246993A1 (de) Verfahren und vorrichtung zum anspinnen eines fadens in einer offenend-spinnvorrichtung
DE2616965B2 (de) Vorrichtung zur aufnahme eines fadens und zu seiner uebergabe an eine huelse nach einem spulenwechsel
CH359389A (de) Verfahren zum Spulen von Garn auf einer Spulmaschine mit mehreren Spulstellen

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

ITCL It: translation for ep claims filed

Representative=s name: ZINI MARANESI

AK Designated contracting states

Designated state(s): CH FR IT LI

EL Fr: translation of claims filed
PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): CH FR IT LI

17P Request for examination filed

Effective date: 19860111

17Q First examination report despatched

Effective date: 19870327

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

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH FR IT LI

XX Miscellaneous (additional remarks)

Free format text: TEILANMELDUNG 87115943 EINGEREICHT AM 30.10.87.

ET Fr: translation filed
PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: W. SCHLAFHORST & CO.

Effective date: 19891117

ITTA It: last paid annual fee
PLBN Opposition rejected

Free format text: ORIGINAL CODE: 0009273

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

Free format text: STATUS: OPPOSITION REJECTED

27O Opposition rejected

Effective date: 19910625

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

Ref country code: FR

Payment date: 19921208

Year of fee payment: 11

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

Ref country code: FR

Effective date: 19940831

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: CH

Payment date: 19950120

Year of fee payment: 13

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

Ref country code: CH

Effective date: 19951231

Ref country code: LI

Effective date: 19951231

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL