EP0276208B1 - Dispositif pour la reprise du filage sur un dispositif de filage open-end a friction - Google Patents

Dispositif pour la reprise du filage sur un dispositif de filage open-end a friction Download PDF

Info

Publication number
EP0276208B1
EP0276208B1 EP86904774A EP86904774A EP0276208B1 EP 0276208 B1 EP0276208 B1 EP 0276208B1 EP 86904774 A EP86904774 A EP 86904774A EP 86904774 A EP86904774 A EP 86904774A EP 0276208 B1 EP0276208 B1 EP 0276208B1
Authority
EP
European Patent Office
Prior art keywords
tapered gap
spinning
fibres
frictional
friction spinning
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.)
Expired - Lifetime
Application number
EP86904774A
Other languages
German (de)
English (en)
Other versions
EP0276208A1 (fr
Inventor
Gerhard W. Hoeber
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
Application filed by Schubert und Salzer Maschinenfabrik AG filed Critical Schubert und Salzer Maschinenfabrik AG
Publication of EP0276208A1 publication Critical patent/EP0276208A1/fr
Application granted granted Critical
Publication of EP0276208B1 publication Critical patent/EP0276208B1/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
    • D01H4/52—Piecing arrangements; Control therefor for friction spinning

Definitions

  • the present invention relates to a method for re-spinning an open-end friction spinning device, in which a thread is returned to the wedge gap, bound there in fibers and then continuously withdrawn from the wedge gap, and a device for carrying out this method.
  • the feed device is shut down immediately in order to prevent unnecessary fiber supply which clogs and damages the spinning device.
  • the opening roller generally continues to run, since stopping it separately, in particular for each spinning station, not only requires a great deal of technical effort, but also takes a long time to start up and run down. The result of this is that the fiber beard protruding from the shutdown feed device into the area of the opening roller is completely removed.
  • the object of the present invention is to provide a method and a device for spinning on an open-end friction spinning device, which enables a perfect and safe spinning without impairing the subsequent spinning process.
  • This object is achieved in that the fibers are continuously fed to the wedge gap, but are first removed again from the wedge gap, that the friction spinning elements are driven in the spinning direction and the fiber removal is ended, and that the end of the thread is returned to the fiber accumulation and the thread is underneath continuous integration of the fibers fed to the wedge gap is withdrawn from the wedge gap.
  • the fibers are brought through the wedge gap to the side of the friction spinning elements facing away from the wedge gap and are removed from there. In this way, it is not necessary to strongly redirect the fibers emerging from the fiber feed channel for removal.
  • the friction spinning element rotating out of the wedge gap is reversed in its direction of rotation and, to end the removal of fibers from the wedge gap, the friction spinning element which was previously reversed in its direction of rotation is again reversed in its direction of rotation, so that it rotates out of the wedge gap.
  • the fibers are not removed mechanically, but pneumatically.
  • the fibers can also be sucked off parallel to the wedge gap, so that a suction nozzle arranged on the side of the friction spinning element facing away from the take-off side can be used for this purpose.
  • a suction nozzle arranged on the side of the friction spinning element facing away from the take-off side can be used for this purpose.
  • the two friction spinning elements are preferably separated from one another in the radial direction, so that the fibers are removed through the wedge gap in a particularly simple manner. It is expedient to clean the two friction spinning elements by mutual removal and by switching off the suction air on the suctioned friction spinning element and to pressurize the suctionable friction spinning element only when the two friction spinning elements have been returned to their operating position.
  • the “operating position” of the friction spinning elements is understood to mean a position that enables the fibers to be collected in the wedge gap and to be integrated into a thread end.
  • the two friction spinning elements can be so close together that the fiber accumulation forms in the wedge gap facing the fiber feed; depending on the design of the open-end friction spinning device, the operating position can, however, also be selected such that the fibers on one side pass through the axes of the two friction spindles ment laid level in a first wedge gap and in a second wedge gap, which is formed by the friction spinning elements on the other side of this plane, are integrated into the end of a thread.
  • the fiber removal is advantageously not stopped suddenly, but gradually.
  • the thread is first brought into the ready-to-piece position outside the wedge gap. This ensures that the fibers can only come into contact with the returned thread end at the desired point in time during attachment.
  • the thread return is controlled so that the thread end is placed on the fiber accumulation.
  • the friction spinning elements do not need to be driven in the spinning direction before the thread is introduced into the wedge gap, but it has proven to be advantageous if they are driven in the spinning direction at the latest when the fiber removal from the wedge gap has ended.
  • a controllable suction air nozzle which is assigned to the fiber feed channel and is directed against the wedge gap, is provided, which is located on the side of the friction spinning elements opposite the fiber feed channel.
  • This suction air nozzle has the task of sucking the fibers out of the wedge gap as long as the fibers are not yet to remain in the wedge gap for binding into a thread end, the special arrangement of the suction air nozzle causing the fibers to be removed not to be deflected on their way into the suction air nozzle need.
  • the negative pressure can expediently be switched over from the suction air nozzle to the friction spinning element which can be sucked up and vice versa. If a piecing device that is movable along a plurality of open-end friction spinning devices is provided, then it is advantageous if the negative pressure in the suction air nozzle and in the suctionable friction spinning element can be controlled from this movable piecing device.
  • the vacuum acting in the suction air nozzle can advantageously be gradually controlled in a further embodiment of the method according to the invention.
  • a controllable reversing clutch is assigned to the friction spinning element rotating out of the wedge gap.
  • the friction spinning element rotating out of the wedge gap during the spinning process like the other friction spinning element, can be temporarily driven in the direction of the wedge gap. In this way, the fibers fed to the wedge gap are conveyed between the friction spinning elements, from where they are removed pneumatically or mechanically by means of a conveyor belt.
  • the two friction spinning elements can be moved radially relative to one another for the removal of the fibers.
  • the operating position of the two friction spinning elements can be set by a stop in a further embodiment of the subject matter of the invention.
  • the negative pressure can be switched from the suction air nozzle to the suctionable friction spinning element and vice versa is.
  • the bearing of the movably mounted friction spinning element is expediently formed by a housing part which is movably supported relative to a housing part to be received by the stationary friction spinning element.
  • the negative pressure in the suction air nozzle and in the suctionable friction spinning element is controllable as a function of the position of the friction spinning elements.
  • the housing has a thread insertion slot opening opposite the outer surface of the friction spinning element which rotates into the wedge gap.
  • the friction spinning element screwing into the wedge gap is mounted in a stationary manner, while the friction screwing out of the wedge gap Spinning element is movably mounted relative to the other friction spinning element. In this way, the thread can already be deposited on the rotating friction spinning element before the two friction spinning elements have come into mutual contact again.
  • FIG. 1 shows a spinning station with an open-end friction spinning device 10, to which the fiber material 3 is fed by means of a feed and dissolving device 2.
  • a take-off device 4 is provided for pulling off the spun thread 30.
  • the drawn-off thread 30 is wound up by means of a spooling device 40 onto a spool 400 which can be driven by a spooling roller 401.
  • a thread monitor 41st In the thread path between the open-end friction spinning device 10 and the winding device 40 there is a thread monitor 41st
  • the open-end friction spinning device 10 has a housing 13 with two rotationally symmetrical friction spinning elements 100 and 101 (FIGS. 2 and 3) which form a wedge gap 102. At least one of the friction spinning elements, e.g. the friction spinning element 100 is perforated and sucked in the area of the wedge gap 102 during spinning. For this purpose, it is connected to a suction air line 11 via a valve 110 (FIG. 1).
  • a suction air nozzle 111 is connected via the valve 110 and an intermediate line 112, which in relation to the plane E, which is defined by the axes 103 and 104 (FIG. 3) of the friction spinning elements 100 and 101, is opposite to the wedge gap 102 in a through the Friction spinning elements 100 and 101 formed second wedge gap 105 opens.
  • This suction air nozzle 111 is assigned to the fiber feed channel 24 and has the task of suctioning off the fibers that are not yet required before the thread 30 is attached.
  • each friction spinning element 100 and 101 which in the exemplary embodiment shown are designed as rollers for the sake of simplicity, are driven in the same direction (see arrows P1 and P2 in FIG. 3).
  • each friction spinning element 100 and 101 has a whorl 107 and 108, respectively, via which they are driven by a drive belt 12 (FIGS. 4 and 5).
  • the drive belt 12 is held in contact with whorls 107 by a stationary roller 18 (FIGS. 4 and 5).
  • a controllable reversing clutch 17 is assigned to the whorl 108 of the friction spinning element 101 rotating out of the wedge gap.
  • it has two rollers 170 and 171 which are arranged on the two ends of a cranked lever 173 which can be pivoted about an axis 172.
  • the role 170 has the task of keeping the drive belt 12 in contact with the whorl 108 when the drive belt 12 is released from the roller 171.
  • the armature 175 of an electromagnet 176 is articulated on the lever 173 via a coupling member 174. For the sake of clarity, only the electromagnet 176 of this drive is shown in FIG. 1.
  • the housing 13 is designed in such a way that it allows the friction spinning element 101 to pivot away from the friction spinning element 100 in the radial direction.
  • its axis 106 is mounted on two pivot arms 150 and 151, which in turn are pivotable about an axis 15 (FIG. 2).
  • a coupling member 140 is connected to the swivel arm 150 and is connected to the armature 141 of an electromagnet 14.
  • a return spring 142 is arranged, which is supported in a suitable manner on the armature 141 and on the electromagnet 14 so that it returns the friction spinning element 101 into its operating position when the electromagnet 14 drops.
  • a stop 16 with which the swivel arm 150 cooperates is adjustably arranged on the housing 13.
  • the feed and dissolving device 2 arranged upstream of the open-end friction spinning device 10 has a feed hopper 20, by means of which the band-shaped fiber material 3 is fed to a feed roller 21, with which a pressure roller or feed trough (not shown) cooperates in the usual way.
  • the feed roller 21 is driven via a clutch 25, which with the thread monitor 41 is connected in terms of tax.
  • the fiber material 3 is fed from the feed roller 21 to a dissolving roller 22, which dissolves the band-shaped fiber material 3 into individual fibers and feeds a thread formation zone 300, where the individual fibers are bound into the end of the continuously drawn thread 30.
  • the opening roller 22 is driven in a known manner by a belt 23.
  • a fiber feed channel 24 extends from the opening roller 22 into the wedge gap 102 of the friction spinning elements 100, 101.
  • a part of the fiber feed channel 24 is located in a cover 130 covering the housing 13, which has a thread insertion slot 14 next to the fiber feed channel 24.
  • This thread insertion slot 14 extends from the outside 131 of the cover 130 to the inside thereof and, in addition to the trigger-side end 132 of the housing 13, extends to the mouth end 240 of the fiber feed channel 24 facing away from the trigger side.
  • the thread insertion slot 14 ends in one controllable suction air nozzle 144.
  • the thread insertion slot 14 opens next to the fiber feed channel opposite the outer surface of the friction spinning element 100.
  • a piecing device 50 is provided in the maintenance carriage 5 which can be moved along these spinning positions.
  • This has a suction tube 500 (arrow P3) which can be pivoted against the bobbin 400 about an axis 501 and by means of which a thread end can be sucked in from the bobbin 400.
  • the bobbin 400 can be driven from the maintenance carriage 5 in a known manner in the unwinding direction, so that the thread end that is sucked in continues to get into the suction tube 500.
  • the suction tube 500 has a longitudinal slot (not shown) on its side facing the open-end friction spinning device 10, so that the thread section sucked in between the slot end facing away from the spool 400 in the vicinity of the pivot axis 501 of the suction tube 500 and the spool 400 can take an elongated course.
  • the thread 30 comes into the swivel range of a thread clamp 7 known per se with two clamping elements, which can alternately be brought into a holding position in which the two clamping elements lie against one another or in a release position in which they are apart from one another.
  • the thread clamp 7 sits on the free end of an arm 70, which is mounted on the maintenance carriage 5 so that it has a first pivoting movement about a first axis 51 in a horizontal plane (arrow P4) and about a second pivot axis 71 a second pivoting movement in one vertical plane (arrow P5).
  • control device 52 On the maintenance device 5 there is a control device 52 which is connected in terms of control to a drive 502 for pivoting the suction pipe 500 and for controlling the pressure in the suction pipe 500 as well as a drive 510 and a drive 710 for pivoting the thread clamp 7.
  • the maintenance trolley 5 is connected to the open-end friction spinning device 10 to be serviced via electrical connections which can be switched on and off - which are shown in the exemplary embodiment shown as plug contacts 113, 250, 143 and 177 - in terms of control.
  • the feed roller 21 is stopped in a known manner by the thread monitor 41 via the coupling 25, so that no more fibers enter the thread formation zone 300.
  • the bobbin 400 is lifted from the winding roller 401 in a known manner and held at a distance from it so that the bobbin 400 is freely rotatable.
  • the connections between the maintenance carriage are made via the plug contacts 113, 250, 143 and 177 5 and open-end friction spinning device.
  • the suction tube 500 is then pivoted in the direction of the spool 400 and this is driven in the unwinding direction by an auxiliary drive (not shown).
  • the thread 30 is thus unwound and sucked into the suction pipe 500. If the suction tube 500 has taken up a sufficient thread length, the bobbin 400 is pivoted away. The thread 30 emerges from the aforementioned longitudinal slot.
  • the thread 30 is thus in the swivel range of the horizontally and vertically pivotable thread clamp 7. This is brought into the thread run into a thread take-up position, where it picks up the thread 30. It feeds the thread 30 to a separating device (not shown) provided in the maintenance carriage 5, which cuts the thread 30 on the side of the thread clamp 7 facing away from the bobbin 400. A certain thread length between thread clamp 7 and free thread end is created, which is required for piecing. The thread clamp 7 is then pivoted in a combined horizontal and vertical movement to the open-end friction spinning device 10. It is in a thread transfer position in front of the thread insertion slot 14 and presents the thread end 300 to it. It holds the thread 30 essentially parallel to the thread insertion slot 14 with the aid of the suction air nozzle 144 controlled by the maintenance carriage 5.
  • the control device 52 of the piecing device 50 addresses the electromagnet 14, which swivels the friction spinning element 101 away from the friction spinning element 100.
  • the control device 52 excites the electromagnet 176 so that it pushes the roller 171 between the whorl 108 and the drive belt 12. In this way, the friction spinning elements 100 and 101 are no longer driven in the same direction, but rather both rotate into the wedge gap 102 (see arrows P1 and P6 in FIG. 5).
  • the control device 52 addresses the valve 110, which takes the negative pressure from the friction spinning element 100 and generates a negative pressure in the suction air nozzle 111 for this purpose.
  • the fiber feed into the wedge gap 102 is now switched on again by the control device 52 via the coupling 25. Since the two friction spinning elements 100 and 101 are separated from one another by spreading, the fibers pass between the two friction spinning elements 100 and 101 into the wedge gap 105, from where they are immediately removed again by the negative pressure prevailing in the suction air nozzle 111. In this way, the fibers which were previously damaged when the opening roller 22 continues to run and the feed roller 21 is at a standstill are removed.
  • the rotation of both friction spinning elements 100 and 101 in the direction of the wedge gap 102 ensures that the fibers which are deposited on one of the rotating friction spinning elements 100 and 101 are also fed by the rotation of the suction air nozzle 111 and thus removed.
  • the friction spinning elements 100 and 101 are freed from the fibers adhering to the outer surfaces of the friction spinning elements 100 and 101 by the negative pressure acting in the suction air nozzle 111 and thus cleaned. This cleaning process takes place simultaneously with the removal of the fibers fed to the wedge gap and ends with the re-loading of the friction spinning element 100 and 101 in its operating position defined by the stop 16.
  • the thread 30 now enters the thread insertion slot 14 and reaches the peripheral surface of the friction spinning element 100 rotating in the direction of the wedge gap 102. After reaching the thread formation zone 300, the thread 30 binds the rotating fiber mass.
  • the thread 30, which now continuously incorporates the fibers fed to the thread-forming zone 300 is introduced into the take-off device 4, which now causes the thread 30 to be drawn off further from the thread-forming zone 300.
  • the open-end friction spinning device 10 described can be modified in various ways, modifications being possible by exchanging features with one another or by replacing them with equivalents or combinations of features.
  • both friction spinning elements 100 and 101 are rotated in the direction of the wedge gap in order to remove the fibers before the thread is fed to the thread formation zone, and additionally the friction spinning elements 100 and 101 are radially separated from one another to form a gap between them. If desired, the friction spinning elements 100 and 101 can also be stopped until they return to their spinning position. To remove the fibers, it is also sufficient to either remove the friction spinning elements 100 and 101 radially from one another or to turn both friction spinning elements 100 and 101 in the direction of the wedge gap 102. In the latter case, the fibers fed to the wedge gap 102 are deposited on the circumferential surfaces of the friction rollers 100 and 101 and, when they rotate, pass into the wedge gap 105 on the other side of the plane E.
  • the axes 103 and 104 of the friction spinning elements 100 and 101 Fibers are flung down from the friction spinning elements 100 and 101 where they are sucked into the suction air nozzle 111.
  • a conveyor belt 6 can also be provided, which can be guided in a guide 60 for protection against lateral air currents (FIGS. 4 and 5).
  • the fibers are removed purely mechanically by reversing the direction of rotation of the friction spinning element 101 which rotates out of the wedge gap 102 during the spinning process, so that it rotates into the wedge gap 102 just like the friction spinning element 100, and with the aid of the conveyor belt 6.
  • the fiber is removed terminated by renewed reversal of direction of the friction spinning element 101, so that it rotates out of the wedge gap 102 again.
  • the fibers are assigned to the fiber feed channel 24 prior to piecing Suction air nozzle 111 sucked off.
  • This has the advantage that the fibers enter an externally closed system immediately after leaving the wedge gap 102.
  • it is not absolutely necessary to arrange the suction air nozzle 111 opposite the fiber feed channel 24, as is the case according to FIG. 1. If the two friction spinning elements 100 and 101 can be removed radially from one another, it is also entirely possible to provide a suction air nozzle 114 with respect to the thread take-off direction at the rear end of the friction spinning elements 100 and 101, that is to say on their side facing away from the take-off end 132 a valve 115 is controlled.
  • valve 110 Like the valve 110, this can be controlled from the control device 52 on the maintenance carriage 50. In this case, the fibers are sucked out of these parallel to the wedge gap 102 and must therefore be deflected more than in the device shown in FIG. 1. However, this can be compensated for by a correspondingly dimensioned negative pressure in the suction air nozzle 114. In this case, the removal of the fibers from the wedge gap 102 is carried out by controlling the valve 115, ie by switching off the negative pressure acting outside the friction spinning elements 100 and 101 in the suction air nozzle 114.
  • separately controllable valves 110 and 115 can be provided for the negative pressure in the friction spinning elements 100 and 101 on the one hand and in the suction air nozzle 111 and 114, respectively.
  • this is easiest to achieve with the aid of a changeover valve.
  • FIG. 3 shows a further modification of an off-end friction spinning device 10.
  • the fiber feed channel 24 and the thread insertion slot 14 open into the wedge gap 102 next to one another.
  • the thread 30 thus does not need to be brought into the wedge gap 102 by the rotation of the friction spinning element 100 . It is also possible to feed the thread 30 directly to the wedge gap 102, while the fibers are placed on the outer surface of the friction spinning element 100 rotating in the wedge gap 102. Even with such a design, the fibers can be mechanically or pneumatically removed from the wedge gap 102.
  • a switch 8 is provided according to FIG. 4, which switches the valve 110 for switching the negative pressure from controllable friction spinning element 100 controls the suction air nozzle 111 and vice versa.
  • the housing 13 has a stationary housing part 133 which receives the suction and friction spinning element 100 which rotates into the wedge gap 102. In this way, those fibers which are not fed directly to the suction air nozzle 111 but are deposited on the friction spinning element 100 remaining in the region of the mouth of the fiber feed channel 24 are also fed through this friction spinning element 100 to the suction air nozzle 111.
  • the friction spinning element 101 which rotates out of the wedge gap 102, is mounted such that it can move relative to it on a housing part 134 which can be pivoted about an axis 15.
  • Both the housing part 133 and the housing part 134 have a guide and sealing surface 135 or 136 which is concentric with the axis 15, so that a good seal of the housing 13 is achieved even when the friction spinning element 101 is switched off.
  • a stop 16 which is adjustable relative to the stationary housing parts 133.
  • the switch 8 can also be adjustably attached to the stationary housing part 134.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

Pour réaliser la reprise du filage sur un dispositif de filage open-end à friction (10) comportant deux éléments (100, 101) de filage à friction entraînés dans le même sens et formant un écartement conique (2), dont au moins une élément peut être soumis à l'aspiration, des fibres sont constamment amenées à l'écartement conique (102) et à nouveau enlevées immédiatement de ce dernier. Lors de l'arrivée continue des fibres l'enlèvement des fibres de l'écartement conique (102) est interrompu, de sorte que les fibres restent dans l'écartement (102) et forment un ensemble de fibres en rotation. On pose ensuite une extrémité de fil sur cet ensemble de fibres. Après cela on retire de l'écartement conique (102) le fil ainsi formé avec incorporation des fibres amenées en continu à l'écartement conique (102). Pour l'extraction une buse d'extraction d'air (111) réglable orientée contre l'écartement conique (102) est reliée au canal (14) d'arrivé des fibres. Les éléments de filage à friction (100, 101) peuvent être déplacés radialement l'un par rapport à l'autre.

Claims (24)

1. Procédé pour amorcer la filature sur un dispositif de filature à friction, à fibres libérées, procédé dans lequel un fil est renvoyé dans la fente en forme de coin, il y est lié à des fibres puis est à nouveau retiré en continu de la fente en forme de coin, procédé caractérisé en ce que les fibres sont acheminées en continu à la fente en forme de coin, mais sont à nouveau éloignées tout d'abord de cette fente, en ce que les éléments de filature à friction sont entraînés dans le sens de la filature et le retrait des fibres est arrêté, et en ce que l'extrémité du fil est retournée vers l'accumulation des fibres qui se forme et en ce que le fil, alors que se poursuit l'incorporation des fibres acheminées à la fente en forme de coin, est retiré de cette fente en forme de coin.
2. Procédé selon la revendication 1, caractérisé en ce que les fibres sont acheminées, à travers la fente en forme de coin, vers le côté des éléments de filature à friction éloigné de la fente en forme de coin et elles en sont enlevées.
3. Procédé selon la revendication 2, caractérisé en ce que, pour enlever les fibres de la fente en forme de coin, on inverse le sens de rotation de l'élément de filature à friction tournant de manière à sortir de la fente en forme de coin et, pour terminer l'éloignement des fibres de la fente en forme de coin, on inverse à nouveau le sens de rotation de l'élément de filature à friction, dont le sens de rotation avait été précédemment inversé, de façon à ce qu'il sorte à nouveau, en tournant, de la fente en forme de coin.
4. Procédé selon une ou plusieurs des revendications 1 à 3, caractérisé en ce que les fibres sont enlevées pneumatiquement.
5. Procédé selon la revendication 4, caractérisé en ce que les fibres sont retirées de la fente en forme de coin par une aspiration parallèle à cette fente.
6. Procédé selon la revendication 4 ou 5, caractérisé en ce que l'enlèvement des fibres de la fente en forme de coin est interrompu par la coupure d'une dépression agissant à l'extérieur des rouleaux de friction.
7. Procédé selon une ou plusieurs des revendications 1 à 6, caractérisé en ce que, pour enlever les fibres, on écarte l'un de l'autre, en direction radiale, les deux éléments de filature à friction.
8. Procédé selon les revendications 4 et 7, caractérisé en ce que les deux éléments de filature à friction sont nettoyés par écartement mutuel et par coupure de l'air d'aspiration agissant sur l'élément de filature à friction pouvant être soumis à cette aspiration, et en ce que l'élément de filature à friction n'est soumis à nouveau à l'effet d'une dépression que lorsque les deux éléments de filature à friction ont été placés de nouveau dans leur position de service.
9. Procédé selon la revendication 7 ou 8, caractérisé en ce que l'enlèvement des fibres de la fente en forme de coin est achevé par la remise en place des éléments de filature à friction dans leur position de service.
10. Procédé selon une ou plusieurs des revendications 1 à 9, caractérisé en ce que l'enlèvement des fibres est terminé progressivement.
11. Procédé selon une ou plusieurs des revendications 1 à 10, caractérisé en ce que le fil est mis, à l'extérieur de la fente en forme de coin, en une position de préparation à un rattachement de fil et en ce que ce n'est qu'ensuite que l'alimentation en fibres de la fente en forme de coin est enclenchée.
12. Procédé selon la revendication 11, caractérisé en ce que l'extrémité du fil est placée sur l'accumulation de fibres qui se forme.
13. Procédé selon une ou plusieurs des revendications 1 à 12, caractérisé en ce que les éléments de filature à friction sont entraînés, dans le sens de la filature, au plus tard lors de l'achèvement du retrait des fibres de la fente en forme de coin.
14. Dispositif pour mettre en oeuvre le procédé selon une ou plusieurs des revendications 1 à 13, ce dispositif comportant un canal d'alimentation en fibres dirigé vers la fente en forme de coin et étant caractérisé en ce qu'au canal (24) d'alimentation en fibres est associée une buse (111, 114) d'air d'aspiration, commandable, dirigée vers la fente (102) en forme de coin et qui est disposée sur le côté des éléments (100, 101) de filature à friction opposé au canal (24) d'alimentation en fibres.
15. Dispositif selon la revendication 14, caractérisé en ce que la dépression est commutable de la buse (111,114) d'air d'aspiration à l'élément (100) de filature à friction pouvant être soumis à l'action d'une dépression et inversement.
16. Dispositif selon la revendication 14 ou 15, caractérisé en ce que la dépression régnant dans la buse (111, 114) d'air d'aspiration et dans l'élément (100) de filature à friction, pouvant être soumis à l'action d'une dépression, peut être commandée par un dispositif (50) de reprise de filature, pouvant être déplacé le long d'un grand nombre de dispositifs ou unités (10) de filature à friction, à fibres libérées.
17. Dispositif selon une ou plusieurs des revendications 14 à 16, caractérisé en ce que la dépression régnant dans la buse d'air d'aspiration peut être réglée progressivement.
18. Dispositif pour la mise en oeuvre du procédé selon une ou plusieurs des revendications 1 à 13 ou selon la revendication 14, ce dispositif comportant un canal d'alimentation en fibres dirigé vers la fente en forme de coin et étant caractérisé en ce qu'à l'élément (101) de filature à friction, qui sort en tournant de la fente (102) en forme de coin, est associé un accouplement (17) commandable pour produire une inversion de sens (de rotation).
19. Dispositif selon une ou plusieurs des revendications 14 à 18, caractérisé en ce que les éléments (100, 101) de filature à friction peuvent être radialement déplacés l'un par rapport à l'autre.
20. Dispositif selon la revendication 19, caractérisé en ce que la position de fonctionnement des éléments (100, 101) de filature à friction est réglable à l'aide d'une butée (16).
21. Dispositif selon la revendication 19 ou 20, caractérisé en ce que le logement de l'élément (101), monté mobile, de filature à friction est constitué par une partie (134) de carter, qui est montée mobile par rapport à une partie (133) de carter logeant l'élément (100) de filature à friction, monté en position relative fixe.
22. Dispositif selon une ou plusieurs des revendications 14 à 17 et 19 à 21, caractérisé en ce que la dépression régnant dans la buse (111,114) d'air d'aspiration et dans l'élément (100) de filature à friction, pouvant être soumis à l'action d'une dépression, est réglable en fonction de la position des éléments (100, 101) de filature à friction.
23. Dispositif selon une ou plusieurs des revendications 14 à 22, comportant un carter logeant les éléments de filature à friction, dispositif caractérisé en ce que le carter (13) présente une fente (14) d'introduction de fil, débouchant en face de la surface de circumférence de l'élément (100) de filature à friction pénétrant par rotation dans la fente (102) en forme de coin.
24. Dispositif selon une ou plusieurs des revendications 19 à 23, caractérisé en ce que l'élément (100) de filature à friction, pénétrant en tournant dans la fente (102) en forme de coin, est monté en position relative fixe, cependant que l'élément (101) de filature à friction, sortant par sa rotation de la fente (102) en forme de coin, est monté mobile par rapport à l'autre élément (100) de filature à friction.
EP86904774A 1985-09-20 1986-08-02 Dispositif pour la reprise du filage sur un dispositif de filage open-end a friction Expired - Lifetime EP0276208B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853533587 DE3533587A1 (de) 1985-09-20 1985-09-20 Verfahren und vorrichtung zum wiederanspinnen einer offenend-friktionsspinnvorrichtung
DE3533587 1985-09-20

Publications (2)

Publication Number Publication Date
EP0276208A1 EP0276208A1 (fr) 1988-08-03
EP0276208B1 true EP0276208B1 (fr) 1990-10-03

Family

ID=6281496

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86904774A Expired - Lifetime EP0276208B1 (fr) 1985-09-20 1986-08-02 Dispositif pour la reprise du filage sur un dispositif de filage open-end a friction

Country Status (9)

Country Link
US (1) US4781017A (fr)
EP (1) EP0276208B1 (fr)
JP (1) JPH0665766B2 (fr)
CN (1) CN1007627B (fr)
BR (1) BR8606884A (fr)
CZ (1) CZ632286A3 (fr)
DE (2) DE3533587A1 (fr)
IN (1) IN168438B (fr)
WO (1) WO1987001742A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19529654A1 (de) * 1995-08-11 1997-02-13 Schlafhorst & Co W Kreuzspulen herstellende Offenend-Spinnmaschine
US7404080B2 (en) 2001-04-16 2008-07-22 Bjorn Markus Jakobsson Methods and apparatus for efficient computation of one-way chains in cryptographic applications
CN100443632C (zh) * 2006-11-20 2008-12-17 中国重型汽车集团有限公司 一种低温锌系磷化液

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1584247A (fr) * 1968-02-07 1969-12-19
DE2103171C3 (de) * 1971-01-23 1974-10-03 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Vorrichtung zum Verspinnen eines Faserbandes nach dem Offen-End-Prinzip
AT338666B (de) * 1976-02-17 1977-09-12 Fehrer Ernst Gmbh Vorrichtung zum spinnen textiler fasern
GB2042599B (en) * 1978-10-26 1983-09-21 Platt Saco Lowell Ltd Open-end spinning apparatus
CS227602B1 (en) * 1980-02-13 1984-04-16 Jiri Ing Elias Method of and apparatus for yarn spinning-in in open-end spinning unit
EP0034427B2 (fr) * 1980-02-16 1989-05-17 Hollingsworth (U.K.) Limited Dispositif et procédé de filature à bout libéré
EP0052412B2 (fr) * 1980-10-08 1989-04-19 Hollingsworth (U.K.) Limited Procédé et dispositif de filage de fil par friction suivant le principe open-end
DE3141733A1 (de) * 1980-10-23 1982-06-03 Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid "vorrichtung zum offenendspinnen"
DE3317361C2 (de) * 1983-05-13 1994-03-17 Schlafhorst & Co W Verfahren und Vorrichtung zur Inbetriebnahme eines Friktionsspinnaggregates
DE3318687C2 (de) * 1983-05-21 1995-07-06 Schlafhorst & Co W Verfahren und Vorrichtung zur Inbetriebnahme eines Friktionsspinnaggregats
CS240166B1 (en) * 1983-10-04 1986-02-13 Stanislav Skoda Fibre liberation device with spinning unit
DE3339129A1 (de) * 1983-10-28 1985-05-09 Fritz 7347 Bad Überkingen Stahlecker Verfahren und vorrichtung zum reinigen eines spinnaggregates einer oe-friktionsspinnmaschine
DE3342472A1 (de) * 1983-11-24 1985-06-05 Fritz 7347 Bad Überkingen Stahlecker Verfahren zum anspinnen eines garnes an einem spinnaggregat einer oe-friktionsspinnmaschine und oe-friktionsspinnmaschine
DE3403964A1 (de) * 1984-02-04 1985-08-08 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionsspinnen
DE3417308A1 (de) * 1984-05-10 1985-11-21 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und vorrichtung zum fadenansetzen bei friktionsspinnmaschinen
DE3432622A1 (de) * 1984-09-05 1986-03-13 Fritz 7347 Bad Überkingen Stahlecker Vorrichtung zum oe-friktionsspinnen

Also Published As

Publication number Publication date
EP0276208A1 (fr) 1988-08-03
CZ632286A3 (en) 1993-04-14
CN86106956A (zh) 1987-09-09
BR8606884A (pt) 1987-11-03
DE3674805D1 (de) 1990-11-08
DE3533587C2 (fr) 1989-01-12
JPS63503153A (ja) 1988-11-17
US4781017A (en) 1988-11-01
JPH0665766B2 (ja) 1994-08-24
CN1007627B (zh) 1990-04-18
IN168438B (fr) 1991-04-06
WO1987001742A1 (fr) 1987-03-26
DE3533587A1 (de) 1987-04-16

Similar Documents

Publication Publication Date Title
EP0528884B1 (fr) Procede et dispositif pour la pose automatique d'un ruban de fibres sur une machine textile
DE3734565C2 (fr)
EP0226582B1 (fr) Procede et dispositif pour joindre les fils sur un systeme de filature a fibre liberee
DE3706728C2 (fr)
DE10133125B4 (de) Verfahren zum Anspinnen des Garnes auf einer Arbeitsstelle einer Rotorspinnmaschine und Vorrichtung zur Durchführung des Verfahrens
DE3123494C2 (de) Verfahren und Vorrichtung zum Aufwinden eines neu angesponnenen Fadens auf eine in eine Spulvorrichtung eingelegte Leerhülse
EP0381995B1 (fr) Procédé et dispositif de rattache pour un métier à filer à bout libre
DE3118382A1 (de) Verfahren und vorrichtung zum unterbrechen und beginnen des spinnvorganges an einer offenend-spinnstelle
DE2753349A1 (de) Verfahren und vorrichtung zum anspinnen eines umwindegarnes
EP0716169A2 (fr) Machine textile pour la fabrication de bobines à spires croisées
EP0276208B1 (fr) Dispositif pour la reprise du filage sur un dispositif de filage open-end a friction
DE2038432B2 (de) Spulenwechselvorrichtung fuer eine offen-end-spinnvorrichtung
DE4418743A1 (de) Verfahren zum pneumatischen Aufnehmen des Endes eines auf einer Spule aufgewickelten Fadens
DE3410471A1 (de) Oe-friktionsspinnmaschine mit einer vielzahl von spinnaggregaten und einem verfahrbaren wartungsgeraet
DE10133152A1 (de) Rotorspinnmaschine
EP0170972A2 (fr) Procédé et dispositif de rattache pour machine de filature à bouts libérés du type à friction
EP1445360A2 (fr) Procédé et dispositif pour rattacher un fil dans un métier à filer à bout libre
DE3416456C2 (de) Verfahren und Vorrichtung zur Inbetriebnahme einer Friktionsspinnmaschine
EP0266343B1 (fr) Procede et dispositif pour relier des fils sur un dispositif de filage a friction
DE3510004A1 (de) Oe-friktionsspinnmaschine mit einer vielzahl von spinnaggregaten und mit einem verfahrbaren wartungsgeraet
DE4003475A1 (de) Vorrichtung zum pneumatischen falschdrallspinnen
DE4038351A1 (de) Verfahren und vorrichtung zum beheben einer betriebsunterbrechung an einem spinnaggregat
DE3434874A1 (de) Verfahren zum anspinnen eines garnes an einem spinnaggregat einer oe-friktionsspinnmaschine und oe-friktionsspinnmaschine
CH677239A5 (en) Open-end spun yarn splicer
CH686580A5 (de) Verfahren zum Beheben eines Fadenbruchs an einem Paar von Spinneinheiten und Vorrichtung zur Durchfuhrung des Verfahrens.

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

17P Request for examination filed

Effective date: 19861219

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB IT LI

ITCL It: translation for ep claims filed

Representative=s name: ZINI MARANESI

GBC Gb: translation of claims filed (gb section 78(7)/1977)
EL Fr: translation of claims filed
EM Fr: revised translation of claims filed
17Q First examination report despatched

Effective date: 19891124

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 DE FR GB IT LI

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3674805

Country of ref document: DE

Date of ref document: 19901108

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

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

Ref country code: FR

Payment date: 19910807

Year of fee payment: 6

ITTA It: last paid annual fee
26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920724

Year of fee payment: 7

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

Ref country code: CH

Payment date: 19920929

Year of fee payment: 7

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

Ref country code: FR

Effective date: 19930430

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

Ref country code: DE

Payment date: 19930623

Year of fee payment: 8

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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

Ref country code: GB

Effective date: 19930802

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

Ref country code: LI

Effective date: 19930831

Ref country code: CH

Effective date: 19930831

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930802

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Effective date: 19950503

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050802