EP0311987B1 - Procédé et dispositif pour attacher un fil sur un métier à filer à bout libre - Google Patents

Procédé et dispositif pour attacher un fil sur un métier à filer à bout libre Download PDF

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Publication number
EP0311987B1
EP0311987B1 EP88116877A EP88116877A EP0311987B1 EP 0311987 B1 EP0311987 B1 EP 0311987B1 EP 88116877 A EP88116877 A EP 88116877A EP 88116877 A EP88116877 A EP 88116877A EP 0311987 B1 EP0311987 B1 EP 0311987B1
Authority
EP
European Patent Office
Prior art keywords
thread
piecing
pair
spool
rollers
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
EP88116877A
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German (de)
English (en)
Other versions
EP0311987A1 (fr
Inventor
Rupert Karl
Walter Mayer
Hubert Lochbronner
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.)
CAMBIO RAGIONE SOCIALE;RIETER INGOLSTADT SPINNEREI
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
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Publication of EP0311987A1 publication Critical patent/EP0311987A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/08—Automatic end-finding and material-interconnecting arrangements
    • B65H67/081—Automatic end-finding and material-interconnecting arrangements acting after interruption of the winding process, e.g. yarn breakage, yarn cut or package replacement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H65/00—Securing material to cores or formers
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to a method for piecing a thread on an open-end spinning device, in which either a thread is returned from a winding device in which it was previously wound onto a spool during the spinning process, or from a special piecing spool to the spinning device, and an apparatus for performing this method.
  • thread breakages such as shell particles, etc. contained in the fiber sliver occur from time to time, which have to be remedied. This is done by returning the end of the torn thread from the bobbin to the spinning device and connecting it to the fibers supplied there on a fiber collecting surface.
  • Another situation arises when the bobbin has to be changed. In such a case, either the spinning as in the case of a thread break occurs with the help of the thread returned by the bobbin before the full bobbin is exchanged for an empty tube, or an auxiliary thread is used for this purpose, which is pulled off by a special piecing bobbin.
  • This pie thread is severed in the course of the piecing process, the thread section which is connected to the newly spun thread and which has the piecing device being separated and removed from the subsequently supplied, newly spun thread and the subsequently supplied thread is transferred to the new sleeve (EP-OS 0.106.809) .
  • the piecing thread is immediately inserted into the pair of take-off rolls when it is returned and is thus drawn off by it at production speed. The thread thus experiences a very high acceleration during piecing, so that many thread breaks occur at high production speeds or piecing is not possible at all.
  • This object is achieved in that the thread withdrawn from the special piecing spool is brought back near the winding device during its piecing-back delivery, from where it is returned on a return delivery path to the spinning device, which returns with the return path of the thread withdrawn from the spool coincides, and that the thread drawn from the piecing spool after it has been carried out Initially in the vicinity of the winding device, the effect of a controllable take-off is subjected to and discharged, and the subsequent thread is only subjected to the effect of the normal spinning take-off after the full take-off speed has been reached, and is transferred to an empty tube located in the winding device, the excess thread section being attached is separated.
  • This piecing take-off is controlled according to the respective spinning conditions and finally brought up to the speed of the normal spinning take-off. Now the thread can be transferred to the machine without impairing the yarn quality.
  • the piecing agent which represents a point of failure, is removed.
  • the piecing thread is braked while it is being drawn off from the piecing bobbin.
  • the aim of achieving a controlled piecing delivery of the piecing thread is the advantageous measure that the piecing thread mechanically moves from a ready position into the common one Return delivery route is promoted.
  • a mechanical feeding device holding the piecing thread is expediently moved to the beginning of the common return path.
  • a thread loop is formed in front of the latter, which loop is then used later during this movement of the feed device is used up at the beginning of the common return route.
  • the piecing thread after having been fed a length sufficient for piecing, is clamped to the common return path between the piecing spool and the mechanical feeding device and cut between this point and the mechanical feeding device, and the free end thus formed extending to the mechanical feeding device Thread section held pneumatically and separated after the spinning and the transfer of the spun thread to the bobbin and discharged pneumatically.
  • a particularly advantageous piecing method is characterized in that the piecing thread for piecing in connection with a bobbin change is mechanically fed into an air stream which introduces the piecing thread into the open clamping line of a pair of auxiliary rollers, so that the piecing thread is brought to a standstill near its leading end and a thread loop is formed from the still supplied piecing thread, that subsequently the subsequent delivery of the piecing thread is interrupted and the pair of auxiliary rollers is brought into the effective range of a suction air stream using the thread loop while using the thread loop, then the piecing thread by driving the pair of auxiliary rollers and synchronous removal of the piecing thread from the piecing bobbin is returned with its leading end into a standby position within the spinning device, forming a piecing reserve, whereupon the piecing thread in transport seal in front of the pair of auxiliary rollers and the thread end extending to the pair of auxiliary rollers is exposed to a suction air stream, that then the piec
  • the thread itself is preferably monitored as part of the monitoring of the piecing process, which advantageously takes place in the vicinity of the winding device. It is particularly expedient here if the thread is monitored for axial movement.
  • the feed device has a pair of auxiliary rollers, from which one roller of the bobbin lifted from the winding roller can be fed as a drive roller and can be driven with the aid of a controllable drive.
  • the roller of the pair of auxiliary rollers which can be fed to the bobbin drives the bobbin both for the duration of the piecing return of the thread from the bobbin and for the piecing take-off, the rotational speed of the rollers of the pair of rollers being selected in accordance with the respective conditions.
  • the same roller also delivers the piecing thread drawn from the piecing reel back to the spinning device and then effects the controlled piecing take-off.
  • the roller of the pair of auxiliary rollers designed as a drive roller for the spool is arranged at the free end of a pivot lever.
  • the roller of the auxiliary roller pair not deliverable to the bobbin by the as Drive roller for the bobbin trained roller can be lifted off.
  • the roller of the auxiliary roller pair which is designed as a drive roller for the coil, is interchangeable and has a first longitudinal section, which cooperates with the coil and has a shape adapted to the coil, and a second longitudinal section which the other roller of the auxiliary roller pair works together.
  • the pair of auxiliary rollers can always be oriented in the same direction with respect to the coil, since different coil shapes (cylindrical or different conicity) can be compensated for by replacing the roller of the auxiliary roller pair designed as a drive roller with a roller of a suitable shape.
  • the first length section has a larger diameter than the second length section and the drive of the pair of auxiliary rolls so it is controllable that when a thread break is eliminated, the peripheral speed of the first length section is as great as the peripheral speed of the second length section when piecing in connection with a bobbin change.
  • the cylindrical second length section preferably adjoins the larger diameter of the first length section. In this way, even with relatively small differences in diameter at the transition point between the two length sections, it is ensured that the coil cannot come to rest on the second length section.
  • the feed device preferably has a thread retention device.
  • a thread retention device ensures that the piecing thread to be transferred to the feed device can be delivered in a controlled manner. This ensures on the one hand a reliable transfer of the piecing thread to the feed device and on the other hand prevents excessive thread consumption. The safe and defined transfer of the piecing thread to the feeding device ensures a high piecing security.
  • the feed device can in principle be designed in various ways; it preferably has a drivable pair of delivery rollers.
  • the delivery roller pair and the auxiliary roller pair are assigned a common drive motor, to which the delivery roller pair is connected via a controllable coupling. This coupling enables the piecing thread to be conveyed with the aid of the pair of auxiliary rollers in both the one and in the other direction, without additional piecing thread having to be drawn off or returned to the piecing bobbin by the pair of delivery rollers.
  • the feed device advantageously has a storage device. In this way it can be avoided that such differences have to be compensated for, for example, by a corresponding drive of the delivery roller pair.
  • the storage device can be designed differently.
  • the storage device is designed as a suction air opening which can be brought into effect between the pair of delivery rollers and the pair of auxiliary rollers. This can be done, for example, in that the suction air opening can be moved into this working position and later returned to a rest position.
  • the storage device is preferably located between the delivery roller pair and the auxiliary roller pair.
  • the storage device is designed as a suction air opening, it is advantageously arranged stationary in the vicinity of the auxiliary rollers between the delivery rollers and the auxiliary rollers and can be controlled by a shutdown device.
  • a thread separating device is expediently provided in front of the storage device in the direction of transport, which is advantageously located between the pair of delivery rollers and the storage device.
  • the feed device has a pneumatic thread feeder connected upstream of the auxiliary roller pair.
  • the latter preferably has a thread guide tube which extends from the pair of delivery rollers to the pair of auxiliary rollers. It is advantageous if the suction air opening opens laterally into the end of the thread guide tube facing the pair of auxiliary rollers.
  • the thread separating device is also advantageously arranged in the thread guide tube.
  • an advantageous embodiment of the device according to the invention is on the side facing away from the delivery roller pair the controllable thread clamp arranged in the suction air opening in the vicinity of the end of the thread guide tube. If the thread is clamped with the help of the thread clamp, a thread reserve can be built up in the suction air opening if the piecing thread continues to be delivered, which is then used up again after the auxiliary roller pair has taken up its clamping position when the auxiliary roller pair moves to the return device.
  • This thread clamp is expediently arranged in the thread guide tube, and in a simple embodiment of this device the controllable thread clamp can have a movable clamping part made of elastic material.
  • the feed device comprises a compressed air nozzle directed towards the clamping line of the pair of auxiliary rollers, which is located between the pair of delivery rollers and the auxiliary roller pair can be brought into effect.
  • the compressed air nozzle is designed as an injector nozzle, which opens into the end of the thread guide tube facing the pair of delivery rollers.
  • the compressed air nozzle should be effective until the piecing thread comes into the clamping line of the pair of auxiliary rollers and the thread reserve has been built up in the suction air opening, it can be provided that the drive of the roll-off roller of the auxiliary roller pair together with the compressed air nozzle with a common control device in terms of control stands.
  • the shape of the thread guide tube at its end facing the auxiliary roller pair is adapted to the gusset of this auxiliary roller pair.
  • a control device with a plurality of control programs is preferably provided, which can be called up depending on whether a thread break immediately following a bobbin change or independently thereof occurs or whether a spool change is to be carried out in connection with a lot change or independently of this.
  • the thread retention device also serves as a conveying means for the piecing thread and is therefore formed by a pair of delivery rollers.
  • the thread retention device is designed as a storage device and the feed device has a thread clamp which can be moved from one side of the auxiliary roller pair in the receiving position to the other side thereof.
  • a monitoring device monitoring the spun thread is provided. It has proven to be particularly expedient if the monitoring device is assigned to a thread removal device for removing the thread before it is transferred to the winding device, since additional guide means are then not required.
  • the monitoring device is preferably assigned to the suction air opening through which the piecing device is discharged. In this way, the monitoring device is in relatively close proximity to the winding device, so that it can determine all errors in the yarn path between the spinning device and the winding device.
  • the monitoring security is further increased if, in a further advantageous embodiment of the subject matter of the invention, the monitoring device is designed such that it can distinguish between an axially immobile and an axially movable thread.
  • the piecing spool, the feed device, the feed device and the return device are advantageously arranged on this maintenance device in this case.
  • the suction air opening is preferably connected to a machine-side vacuum source.
  • the present invention makes it possible in a simple manner to always carry out an optimal piecing process, depending on the special conditions. Even if immediately after a bobbin change Thread breakage occurs, a failure of the following piecing process is avoided by piecing with the help of a special piecing thread.
  • the device according to the invention enables a defined feed of the piecing thread to the spinning device and a defined insertion of the take-off after piecing return delivery, the special arrangement of the auxiliary roller pair and its drive control not only making it possible to adapt to the fiber material being spun, but also to control the thread size enable in the piecing area and in the area adjoining it. This ensures a high level of security.
  • the device according to the present invention is furthermore simple in control and compact in construction, since no elements are arranged in the entire area between the normal bobbin and the spinning device and no elements are brought into this area which are used to feed the piecing thread to the spinning device serve.
  • the device according to the invention can also be retrofitted to existing piecing devices, since only the existing swivel lever with the auxiliary drive roller for the spool and the control system must be replaced for this purpose, and the feed device must also be installed.
  • a thread 10 is spun which is drawn off through a thread draw-off tube 11 with the aid of a pair of draw-off rollers 12.
  • This pair of draw-off rollers 12 has in the usual way a driven roller 120 and a pressure roller 121 which can be lifted off from it.
  • the thread 10 passes on its way to a winding device 13 a thread tension compensation guide 14 and a traversing thread guide 15 which is used for the crosswise laying of the thread 10 on a in the winding device 13 located coil 132 is moved back and forth.
  • the coil 132 is clamped between two coil arms 131, which can be pivoted about an axis 133.
  • the bobbin 132 rests on a driven winding roller 130.
  • the winding device 13 also has a bobbin lifting device 134 which can be brought between the winding roller 130 and the bobbin 132.
  • the drive device, not shown, of the bobbin lifting device 134 is connected in terms of control to a thread monitor 16, which is arranged in the thread run in the vicinity of the outlet mouth of the thread take-off tube 11.
  • the spool lifting device 134 is also assigned a drive device (not shown) of the piecing device, so that the spool lifting device 134 can be returned from its lifting position shown in FIG. 2 to its basic position shown in FIG. 1.
  • a spool ramp 17 over which the full spools 132 can be fed to a conveyor belt, not shown, in order to be able to feed the spools 132 to a collection point.
  • An empty tube feed device 19 is provided above the winding device 13, from which the empty tubes 190 required for this (see FIG. 2) are removed when the bobbin is changed.
  • FIG. 1 A part of a piecing device is shown on the right in FIG. 1, which is arranged on a maintenance device 2.
  • This maintenance device 2 can be moved along a large number of spinning stations arranged side by side, each of which has a spinning device, a thread monitor 16, a pair of take-off rollers 12, a thread tension compensation guide 14, a traversing thread guide 15, a winding device 13 and a bobbin ramp 17.
  • the piecing device arranged on the maintenance device 2 has a return delivery device 20 which, among other things, has a suction nozzle 200, a centering spindle 21 (FIG. 5) and a discharge spindle 25.
  • the suction nozzle 200 has the task of sucking the end of the broken thread 10 from the spool 132 in the event of a thread break.
  • the bobbin 132 is turned back by means of an auxiliary drive roller 24.
  • the suction nozzle 200 has a slot on its side facing the spinning device, from which the thread 10 sucked back finally emerges and is fed to a feed device, not shown, which in turn conveys the thread 10 to the mouth of the thread take-off tube 11.
  • the described return delivery device 20 is not only used for removing the broken thread, but also in connection with piecing when changing the bobbin. This piecing takes place with the aid of a piecing thread 30 which is drawn off from a piecing bobbin 3.
  • the piecing thread 30 is fed with the aid of a feed device 4 to a feed device 5, from which the piecing thread 30 reaches the return delivery device 20.
  • the feed device 4 has a pair of delivery rollers 40, of which at least the delivery roller 400 can be driven.
  • the other delivery roller 401 generally does not need its own drive, but if desired, a direct drive can also be provided for this delivery roller 401.
  • the delivery roller 400 is driven by a drive wheel 402, which in turn by means of a clutch, not shown, with the aid of a Timing belt 403 or the like is driven by a drive motor 404.
  • This drive motor 404 in turn drives the feed device 5 via a toothed belt 50 or the like, which has an auxiliary roller pair 52 as the most important component.
  • the auxiliary drive roller 24 is part of an auxiliary roller pair 52 and is driven in a manner not shown via a drive wheel 51, which in turn receives its drive via the toothed belt 50 mentioned.
  • the auxiliary roller pair 52 also has a pressure roller 520 which can be brought into contact with the auxiliary drive roller 24 by means of a magnetic drive 53 or can be lifted off the latter again.
  • the pair of auxiliary rollers 52 is located at the free end of a pivot lever 54 which also carries the magnetic drive 53 and is pivotably mounted on the axis 540 of the drive wheel 51.
  • the thread guide tube 41 has, at its end facing the pair of delivery rollers 40, a conical widening 410 which widens in the direction of the pair of delivery rollers 40, which makes it easier to thread the piecing thread 30 into the thread guide tube 41.
  • an injector nozzle 411 opens laterally into the thread guide tube 41. This injector nozzle 411 is assigned a valve 412, with the aid of which the compressed air supply into the thread guide tube 41 can be controlled.
  • a thread separating device 413 is arranged in the vicinity of the entry into the thread guide tube 41.
  • a thread clamp 42 In the vicinity of the exit-side end of the thread guide tube 41, a thread clamp 42 is provided, which consists of a stationary part 420 and a part 421 that can be lifted off. In the vicinity of this thread clamp 42 on the end facing the pair of auxiliary rollers 52 opens laterally into the thread guide tube 41 a suction opening 43.
  • This suction opening 43 forms a store and is connected via a valve 430 to a suction line 431 which, in the working position of the maintenance device 2, is connected to a central vacuum source (not shown) via a suction line 18 of the open-end spinning machine.
  • the thread 10 or the piecing thread 30 can be brought into such a position that it can be picked up by a suction tube 22 which can be advanced to the thread path (FIG. 8) and which is connected to the suction line 18 in a manner not shown .
  • the suction tube 22 On the side facing the pair of auxiliary rollers 52, the suction tube 22 has a separating device 221 in the vicinity of its mouth 220.
  • the maintenance device 2 has a guide fork 23, with the aid of which the spun thread for the transfer to the empty tube 190 inserted in the winding device 13 into a cheap one Position can be brought.
  • the spinning station is in a state as shown on the left in FIG. 1. If the coil 132 has reached the desired target size, this is registered in a known manner. For this purpose, for example, the revolutions of the rollers 120 of the pair of draw-off rollers can be counted from the insertion of the empty tube, which are compared with a predetermined target value.
  • the passing maintenance device 2 can also scan the coil. When the desired target size is reached, the maintenance device 2 is stopped before this spinning station. A thread break is now produced in a known manner by preventing the supply of fibers into the spinning rotor 1.
  • the thread monitor 16 is actuated, which now causes the spring-loaded bobbin lifting device 134 to be released.
  • This bobbin lifting device 134 now accelerates from the rest position shown in FIG. 1 into its working position between the winding roller 130 and the bobbin 132, so that the bobbin 132 is separated from its drive.
  • the piecing thread 30 is in a waiting position, in which it is clamped by the pair of delivery rollers 40 and extends into the thread guide tube 41.
  • the program for the spool change is started.
  • the piecing motor 404 and the clutch (not shown) assigned to the delivery roller pair 40 are switched on, so that both the delivery roller pair 40 and the auxiliary drive roller 24 of the auxiliary roller pair 52 are now put into operation via the toothed belts 403 and 50.
  • the valve 412 is opened so that compressed air is blown into the thread guide tube 41 via the injector nozzle 411. In this way, a suction air flow is generated in the entry area (extension 10) of the thread guide tube 41, which detects the piecing thread 30, even if it should have previously slipped out of the thread guide tube 41.
  • the full spool 132 is ejected from the spool arms 131 by conventional means and therefore not shown and is fed via the spool ramp 17 to the conveyor belt (not shown) (FIG. 3).
  • the bobbin arms 131 reach their upper position, as shown in FIG. 4.
  • an empty tube 190 is removed from the empty tube feed device 19 in a manner known per se and inserted into the coil arms 131.
  • the pair of delivery rollers 40 is stopped by actuating the coupling assigned to the drive wheel 402, so that no more thread is supplied.
  • the valve 412 is closed, so that the further supply of compressed air into the thread guide tube 41 is prevented.
  • the magnetic drive 53 is actuated, so that the pressure roller 520 comes to rest on the auxiliary drive roller 24 and the leading thread end jams.
  • the clutch assigned to the drive wheel 402 is switched on again, so that in addition to the pair of auxiliary rollers 52, the pair of delivery rollers 40 is now driven again.
  • the drive connections and the diameter of the rollers of the delivery roller pair 40 and the auxiliary roller pair 52 are coordinated with one another in such a way that the roller pairs 52 and 40 are driven at the same peripheral speed. If necessary, the peripheral speed of the auxiliary roller pair 52 can be somewhat be greater than the circumferential speed of the pair of delivery rollers 40, so that the piecing thread 30 between these two pairs of rollers 40 and 52 is subject to a slight delay.
  • the piecing thread 30 drawn off from the piecing coil 3 and delivered by the pair of auxiliary rollers 52 now comes into the effective range of the suction air flow acting in the suction nozzle 200 and is sucked into the latter.
  • the suction nozzle 200 is pivoted back from its thread take-up position shown in FIG. 4 into the rest position shown in FIG. 5 .
  • the piecing thread 30 emerges from the slot (not shown) facing the winding roller 130, which slot can now be opened for this purpose while it was closed when the thread was sucked in.
  • the piecing thread 30 in this case takes up the thread path 30a and thereby arrives at the centering spindle 21, which has meanwhile been brought into the working position shown.
  • the piecing thread 30 takes an elongated course between the centering spindle 21 and the end of the slot facing the pivot point of the suction nozzle 200.
  • the piecing thread 30 is picked up in a known manner by a pair of rollers (not shown), brought to a certain length by a separating device assigned to this pair of rollers, and then brought with this pair of rollers in front of the outlet mouth of the thread take-off tube 11, the piecing thread 30 reaching the discharge spindle 25, which has now assumed the working position shown, so that a piecing reserve is formed on the ejector spindle 25.
  • the piecing thread 30 By returning the piecing thread 30 together with the aid of the delivery roller pair 40 and the auxiliary roller pair 52, the piecing thread 30 is brought into a standby position within the thread take-off tube 11 of the spinning device (see thread path 30b), in which the thread end has not yet reached the fiber collecting surface of the spinning element (that is designed as a spinning rotor 1) is sufficient.
  • the thread separating device 413 is in front of the auxiliary roller pair 52, i.e. between delivery roller pair 40 and auxiliary roller pair 52, actuated and the piecing thread 30 is cut in the thread guide tube 41. Since the piecing thread in front of the store, i.e. of the suction opening 43, has been severed, the thread end 32 extending to the pair of auxiliary rollers 52 is now sucked in by the suction air flow acting in the suction opening 43. The other thread end 33, which extends to the pair of delivery rollers 40 and is clamped by this, is kept stretched by the air flow which is generated by the vacuum effect in the suction opening 43.
  • the compressed air supply to the injector nozzle 411 can thus be switched off now at the latest if this has not already taken place after the pressure roller 520 has come into contact with the auxiliary drive roller 24 (see FIG. 3). Since the injector nozzle 411 only has to be effective when the pressure roller 520 is lifted off the auxiliary drive roller 24, the magnetic drive 53 for the pressure roller 520 and the injector nozzle 411 can also be controlled synchronously by a common control device.
  • the spinning element which is designed for example as a spinning rotor 1
  • the spinning rotor 1 which was previously stopped, for example in the course of cleaning, is released again.
  • the actual piecing now takes place by throwing off the thread reserve formed by the piecing thread 30 from the ejection spindle 25.
  • the piecing thread 30 now comes out the standby position shown in Fig. 5 except for the collecting surface of the spinning rotor 1 (Fig. 6).
  • the fiber feed is also released in a time-coordinated manner, so that the thread end returned to the spinning rotor 1 now connects to the fibers accumulated in the spinning rotor 1.
  • the piecing thread 30 When the piecing thread 30 is ejected by the ejection spindle 25, the piecing thread 30 passes between the roller 120 and the pressure roller 121 of the pair of take-off rollers 12 lifted off from it.
  • the drive motor 404 is switched on again in a timed manner with the ejection of the piecing thread from the ejection spindle 25, but in the opposite direction as before.
  • the clutch associated with the drive wheel 402 is actuated so that the pair of delivery rollers 40 is not driven by the drive motor 404.
  • the pair of auxiliary rollers 52 now rotates in the take-off direction and pulls the thread out of the spinning rotor 1 and feeds it to the suction opening 43 (see FIG. 6).
  • the piecing device 34 also enters the suction opening 43.
  • the drive motor 404 is controllable in its speed and is gradually accelerated during this piecing process according to a predetermined program, until the thread is finally drawn off at a speed which is the same as the peripheral speed of the driven roller 120 of the pair of take-off rollers. Now the pressure roller 121 is brought into contact with the driven roller 120 of the pair of draw-off rollers 12, so that the thread is transferred to the pair of draw-off rollers 12 and is now drawn off from the spinning rotor 1 by the latter.
  • the spun thread is first drawn off from the spinning device by the mechanical feed device 5 (pair of auxiliary rollers 52) located in the vicinity of the winding device 13 and only transferred later to the pair of draw-off rollers 12 between the spinning device and feed device 5.
  • the rotation that is given to the thread during the spinning by the spinning rotor 1 can thus be distributed over a large length range of the thread, unless this is prevented by other twist-stop edges etc. For this reason, less rotation gets into the spinning rotor 1 and on its fiber collecting surface, so that more time is available for the period between contact between the thread end and the fiber collecting surface without the risk of the thread being overwound during the spinning and thereby breaking.
  • the mouth 220 of the suction tube 22 is fed to the thread between the auxiliary roller pair 52 and the centering spindle 21.
  • the auxiliary roller pair 52 is stopped by means of the drive motor 404 or at least slowed down in relation to the extraction roller pair 12, so that between the extraction roller pair 12 and the auxiliary roller pair 52 a thread excess arises which is sucked into the suction tube 22 as a thread loop 100.
  • this thread loop 100 has reached a sufficient size so that the newly spun thread 10 supplied by the draw-off roller pair 12 can be securely held pneumatically by the suction tube 22, the separating device 221 is actuated.
  • the mouth 220 of the suction tube is designed in such a way - or corresponding guides are assigned to it that the part of the thread loop 100 fed to the auxiliary roller pair 52 is located in the area of the separating device 221, while the part of this thread loop 100 facing the pulling-roller pair 12 is not in the area of this separating device reached. This ensures that the thread 10 is severed between the thread loop 100 and the feed device 5 and is held securely by the suction tube 22 even after the thread loop 100 has been cut through.
  • the separated thread end is pulled out of the suction tube 22 by the pair of auxiliary rollers 52. After leaving the auxiliary roller pair 52, this separated thread end is removed through the suction opening 43 (see FIG. 7).
  • the thread 10 continuously supplied by the take-off roller pair 12 continues to enter the suction tube 22.
  • the auxiliary roller pair 52 which is now no longer required, is moved back into its starting position shown in FIG. 1.
  • the magnetic drive 53 releases the pressure roller 520 so that it can return to its basic position.
  • the centering spindle 21 is now driven so that it sheds the thread 10 and passes it into a guide fork 23 previously brought to the centering spindle 21 (FIG. 8).
  • the suction pipe 22 is brought into the transfer position in which the thread 10 entering the suction pipe 22 reaches the area of a catch device (not shown) on one of the sleeve plates 135 at the end of one of the bobbin arms 131.
  • the thread is transferred to the empty tube 190.
  • the yarn 10 subsequently supplied by the take-off roller pair 12 is thus wound onto the empty tube 190, with appropriate control of the guide fork 23 ensuring that a plurality of reserve windings are first formed before the thread 10 is released by the guide fork 23 and thereby in the stroke area of the traversing thread guide 15 arrives, whereupon regular turns are formed on the empty sleeve 190.
  • the separating device 221 in the suction tube 22 is actuated again, whereby the excess thread end is separated from the thread 10 transferred to the empty tube 190 and then through the suction tube 22 is discharged.
  • the bobbin changing process and the piecing process to be carried out in connection with this bobbin changing process are thus ended.
  • the elements of the spinning station now assume their spinning position again, as shown in FIG. 1.
  • the device described above for carrying out a bobbin change and a piecing to be carried out in this connection is designed so that it does not engage in the working area of the return device 20, so that it can be designed in a conventional manner and thus also works in the usual way.
  • the auxiliary drive roller 24 is arranged at the interface between the feed device 5 and the return device 20, which is why the auxiliary drive roller 24 is simultaneously formed as a component of the auxiliary roller pair 52.
  • the pivot lever 54 with the auxiliary drive roller 24 of the auxiliary roller pair 52 also required; however, when the thread break is eliminated, the auxiliary drive roller 24 fulfills the task of driving the full bobbin 132. For this reason, this auxiliary drive roller 24 is delivered as a drive when the yarn break is removed from the bobbin 132 lifted off the winding roller 130.
  • the thread 10 is continuously wound onto the bobbin 132. If a thread break occurs, a control pulse is emitted by the thread monitor 16, which causes the supply of fibers in the spinning rotor 1 to be stopped. In addition, a control pulse is given to the drive of the coil lifting device 134, which releases it and brings it into the position shown in FIG. 2.
  • the maintenance device 2 now comes to the relevant spinning station. This can take place on the basis of a call signal which has been emitted by the thread monitor 16; but this can also be done in that the maintenance device 2 travels along the machine and carries out necessary maintenance work at all those spinning positions which it passes anyway.
  • the maintenance device 2 stops.
  • the spool arms 131 are raised by a lifting device (not shown) to such an extent that the spool 132 is lifted off the spool lifting device 134, so that the spool 132 is freely rotatable.
  • this lifting device is designed such that the distance between the bobbin 132 and the bobbin roller 130 is always the same.
  • the thread is between the winding device 13 and the spinning device (thread take-off tube) both when it is returned from the bobbin 132 and when it is drawn off from the piecing bobbin 3 11) returned on a return delivery route to the spinning device, which is the same in both cases.
  • the suction nozzle 200 is in the same position both when piecing in connection with a bobbin change and when the thread is broken. In both cases, the return of the thread 10 or the piecing thread 30 to the spinning device takes place by means of the drive of the auxiliary drive roller 24.
  • the program 60 includes the normal thread break repair, as was described with the aid of FIGS. 9 and 10. As shown in FIG. 16, this program is initiated by responding to the thread monitor 16.
  • the bobbin changing program with subsequent piecing is contained in program 62.
  • This program 62 is triggered by triggering a switch 64.
  • This switch 64 is formed by a light barrier which scans the diameter of the bobbin 132 or else by a counting device which scans the number of revolutions of the roller 120 of the draw-off roller pair 12 and thereby determines the thread length since the last bobbin change.
  • Other devices can also be provided, with the aid of which it can be determined whether the coil 132 has reached its desired size.
  • the drive 642 of a switching device 643 is connected via a connecting line 641, with which the thread monitor 16 can optionally be connected to the program 60 or to the program 61.
  • This program 61 is used to correct thread breaks immediately following a bobbin change that has just been carried out. In such a case, there is generally no length of thread on the newly inserted empty tube 190 such that re-spinning is possible.
  • the piecing process is still monitored by the maintenance device 2 for a certain time. This can be done with the help of the thread monitor 16 mentioned or a traverse monitoring device which determines whether the spun on Thread is present or after a predetermined time after spinning a traversing movement - as a result of the insertion in the traversing thread guide 15 - executes or not. If this is not the case, the program 61 is triggered.
  • the spinning device is first stopped again (interruption of the fiber feed, lifting of the empty tube 190).
  • the empty sleeve 190 is then emptied. This can be done, for example, by hand or by moving the suction nozzle 200 to the raised and freely rotatable empty sleeve 190.
  • control line 640 can also be connected to the thread monitor 16 via the changeover device 643.
  • the program 61 is omitted, so that in the event of a thread break occurring after a bobbin change, a new bobbin change is carried out, the empty tube 190 being removed with the few turns on it.
  • both the suction pipe 22 and the suction line 431 are equipped with a monitoring device 222 or 432 according to FIGS. 1 to 10, which serves to monitor the spun thread.
  • monitoring devices 222 and 432 are activated as part of the piecing monitoring at the times when a thread enters the suction pipe 22 (see work phase according to FIG. 8) or into the suction line 431 (see work phases according to FIGS. 3, 6 and 7) Must extend, both of which form a thread removal device and remove the thread before it is transferred to the winding device 13. If the thread is found to be missing, the piecing process is interrupted and a new piecing process is initiated.
  • Such monitoring devices 222 and 432 can also detect winding formations on the pair of draw-off rollers 12, since in such a case the thread monitor 16 detects the presence of the normal draw-off tension, the monitoring device 222 and / or the monitoring device (432) registers the absence of the thread.
  • the monitoring device can be designed in a manner known per se, e.g. as a light barrier. However, it is advantageous if the monitoring device can distinguish between a standing (axially immobile) and a running (axially movable) thread, i.e. is designed as a thread running monitoring device. If the thread is monitored for axial movement, errors that occur after the thread has started to be removed with the aid of the suction pipe 22 or the suction line 431, e.g. a sticking of the thread, registered.
  • a single monitoring device 222 or 432 is also sufficient, in which case it is then expedient to place this single monitoring device in the vicinity of the end of the thread path, i.e. to be arranged in the vicinity of the winding device 13.
  • the spinning machine is then stopped and the individual spinning devices are prepared for the new batch, which includes cleaning the machine or readjusting the piecing device in the maintenance device 2. If this has happened, the second phase 631 of the program 63 is initiated by actuating the switch 650. In this phase 631, the empty tubes 190 are then inserted into the winding devices 13 and piecing is carried out with the aid of the piecing thread 30, as was described above.
  • the phase 631 of the program 63 can be identical to the program 62.
  • a program is carried out in this second phase 631, as was described with the aid of FIGS. 1 to 8.
  • the full bobbins 132 are no longer ejected because the bobbins 132 were already ejected in the previous phase 630.
  • the various programs 60, 61, 62 and 63 can thus be called up depending on whether a thread break occurs in connection with a bobbin change or independently of it or whether a bobbin change is carried out in connection with a lot change or independently of this.
  • locking devices such as diodes, which are not shown, prevent the individual programs 61, 62 and 63 from being mixed together in an undesired manner. 16 is not shown for the sake of clarity.
  • the device described can be modified in a variety of ways by replacing elements with equivalents or by other combinations.
  • the thread clamp 42 can also be arranged in the vicinity of the thread guide tube 41 between the latter and the auxiliary roller pair 52, but an arrangement in this thread guide tube 41 is particularly favorable for good thread guidance.
  • the part 420 of the thread clamp 42 is formed by the inner wall of the thread guide tube 41, while the movable part 421 of the thread clamp 42 is formed by an element made of elastic material, which is formed by a pivot lever 422 is held.
  • This pivot lever 422 is mounted on the thread guide tube 41 and connected in terms of control to an electromagnet 423, with the aid of which the elastic part 421 can be brought into or out of the working position.
  • the device described is suitable both in connection with the production of cylindrical and the production of conical coils. In the latter case, it is necessary that the surface line of the Auxiliary drive roller 24 runs parallel to the surface line of the coil 132. This can be achieved in that the auxiliary roller pair 52 is pivotally and adjustably attached to the pivot lever 54.
  • the auxiliary drive roller 24 has two longitudinal sections 240 and 241.
  • the first longitudinal section 240 has a larger diameter than the second longitudinal section 241 and is also adapted to the taper of the spool 132. If the coil 132 is thus cylindrical, the length section 240 also has a cylindrical shape. If, on the other hand, the bobbin 132 is conical, the longitudinal section also has a taper in such a way that the axes 136 and 242 of the bobbin 132 or auxiliary drive roller 24 run parallel. While the length section 240 works together with the spool 132, the length section 241 with the smaller diameter is provided for cooperation with the pressure roller 520.
  • the auxiliary drive roller 24 serves to control the piecing take-off both when removing the thread break and when changing the bobbin, the piecing take-off being carried out via the bobbin 132 and the auxiliary bobbin 24, the diameters of the two length sections 240 and 241 and the speeds, with which the auxiliary drive roller 24 is fixed when the thread breaks or when the bobbin is changed by the drive motor 404, is coordinated with one another in such a way that the thread is always drawn off from the spinning station at the same take-off speed. This is the case if the (average) circumferential speed of the first length section 240 is as great as the circumferential speed of the second length section 241 during piecing when a thread break is eliminated in connection with a bobbin change.
  • the second length section 241 can optionally connect to the smaller or the larger diameter. If it is provided that the second length section 241 connects to the large diameter of the first length section 240 of the auxiliary drive roller 24, the risk that this second length section 241 comes to rest against the circumference of the coil 132 is small, even with a small diameter jump, so that Undetermined drive conditions can be avoided even with small jumps in diameter.
  • auxiliary drive roller 24 or the pressure roller 520 cooperating with it is arranged closer to the pivot axis 540.
  • arranging the auxiliary drive roller 24 in the vicinity of the free end of the pivot lever 54 offers greater design freedom. It is also not absolutely necessary to design the pressure roller 520 so that it can be lifted off the auxiliary drive roller 24, since by appropriately driving the auxiliary roller pair 52, the piecing thread 30 can both run in its clamping line and also come out of it. If necessary, an additional clutch can be provided for the pair of auxiliary rollers 52.
  • this thread retention device is formed by the pair of delivery rollers 40. This pair of delivery rollers 40 also enables a controlled thread feed to the feed device 5.
  • a stationary auxiliary roller pair 52 to which the piecing thread 30 is fed by other mechanical or pneumatic means is indeed conceivable for feeding the piecing thread 30 into the common return path mentioned.
  • it is particularly simple - as shown - to provide a swivel lever 54 or another movable element for the auxiliary roller pair 52 which is moved from a thread take-up position (FIG. 1) to a thread transfer position (FIG. 4).
  • a reserve loop 31 is formed in front of the mechanical feed device 5 according to the described embodiment, which is used up again with such a feed movement of the feed device 5.
  • the feed device 4 has a pneumatic thread feeder upstream of the auxiliary roller pair 52 in the form of a thread guide tube 41 which extends from the supply roller pair 40 to the auxiliary roller pair 52.
  • a pneumatic thread feeder in the form of a swiveling suction tube or a compressed air nozzle is also possible, which can be brought into effect between the pair of delivery rollers 40 and the pair of auxiliary rollers 52 and which is directed onto the clamping line of the pair of auxiliary rollers 52 in order to feed the piecing thread 30 to this pair of auxiliary rollers 52.
  • a storage device is connected upstream of the feed device 5 to compensate for the thread feed movement (between the delivery roller pair 40 and the auxiliary roller pair 52), this can also be designed mechanically in the manner of a storage device which is conventional per se. If such a storage device is designed pneumatically, it can be arranged in a stationary manner between the supply roller pair 40 and the auxiliary roller pair 52 or can be brought temporarily into this area for its work. To save air, this can be switched on and off by a switch-off device (valve 430).
  • the vacuum source for such a piecing device can be arranged on the maintenance device 2 itself; however, the suction opening 43 of the pneumatic accumulator can, as shown in FIGS. 1 to 10, be connected via the suction line 18 to a machine-side vacuum source (not shown).
  • FIGS. 13 to 15 Another embodiment of a feed device 4 is described below with reference to FIGS. 13 to 15, with the aid of which the piecing thread 30 is brought mechanically into the auxiliary roller pair 52 and from there mechanically into the previously mentioned common thread return path.
  • the retaining device is formed by a pair of delivery rollers 40
  • a mechanical storage device 44 is provided for this in FIGS. 13 to 15, in which the thread 30 drawn off from the piecing bobbin 3 is guided in a zigzag.
  • This storage device 44 has two comb-like elements 440 and 441 which are under spring tension and tend to move away from one another and thereby build up a thread reserve.
  • pivoting lever 45 On the side of the storage device 44 facing away from the piecing spool 3 there is a pivoting lever 45 which can be pivoted about an axis 450 and has an openable and closable thread clamp 451 at its end.
  • the pivot lever 54 with the auxiliary roller pair 52 and the pivot lever 45 with the thread clamp 451 are mounted in such a way that the thread clamp 451 can be brought either to one or the other side of the auxiliary roller pair 52 brought into the thread take-up position. This can be seen from a comparison of FIGS. 13 and 14.
  • the pivot lever 54 and the pivot lever 45 assume the positions shown in FIG. 13.
  • the thread clamp 451 holds the start of the piecing thread 30, while the auxiliary roller pair 52 is in the thread take-up position before the beginning of the piecing thread 30.
  • the piecing thread is braked by the storage device 44, so that the piecing thread 30 is not pulled off the piecing coil 3 in an uncontrolled manner.
  • the thread reserve stored in the storage device 44 is reduced until after the swiveling movement of the pivoting lever 45 the thread reserve reaches its full size again by pulling off the piecing thread from the piecing spool 3 again.
  • the auxiliary roller pair After the piecing thread 30 has been taken over by the auxiliary roller pair 52, the auxiliary roller pair is brought into the transfer position by pivoting the pivoting lever 54 (see FIG. 15, compare with FIG. 4). In this case, the thread reserve provided for the storage device 44 is used up.
  • the further process of thread return and piecing is the same as that described with reference to FIGS. 4 to 8. However, care is taken to ensure that the piecing thread 30 does not leave the clamping line of the pair of auxiliary rollers 52 during this piecing process.
  • the pivot lever 54 After the piecing process has been carried out, the pivot lever 54 returns to the position shown in FIG. 13 with the piecing thread 30 held in the pair of auxiliary rollers 52.
  • the pivot lever 45 is now also brought into the position shown in FIG. 13 and takes over the start of the piecing thread 30 in this position.
  • the thread length released when the pivot lever 54 returns to its thread take-up position (according to FIG. 13) is stored in the storage device 44 .
  • the pivot lever 54 can be pivoted to the bobbin with the auxiliary drive roller 24, since the beginning of the piecing thread 30 is held by the thread clamp 451.
  • a piecing device of one of the designs described above can be provided individually for a spinning station.
  • the piecing reel 3, the feed device 4, the feed device 5 and the return delivery device 20 are arranged on the maintenance device 2.

Landscapes

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

Claims (48)

  1. Procédé pour rattacher un fil sur un dispositif (1) de filature à fibres libérées ["open-end"], dans lequel un fil est rétrolivré au dispositif de filage soit par un dispositif (13) de bobinage, sur lequel il avait été précédemment enroulé sur une bobine lors du processus de filage, soit par une bobine spéciale de rattache, caractérisé en ce que, lors de sa rétrolivraison de rattache, le fil délivré par la bobine (3) spéciale de rattache est amené jusqu'au voisinage du dispositif (13) de bobinage, d'où il est rétrolivré sur un chemin de rétrolivraison qui conduit au dispositif (1) de filage et qui coïncide avec le chemin de rétrolivraison du fil délivré par la bobine (132); en ce qu'après rattachement réussi, le fil (30) delivré par la bobine (3) de rattache est tout d'abord soumis, au voisinage du dispositif (13) de bobinage, à l'action d'un dispositif de délivrance réglable, et est évacué ; et en ce que ce n'est qu'après avoir atteint la pleine vitesse de délivrance que le fil (10) livré à la suite par le dispositif de filature est soumis à l'action du dispositif de délivrance normale de filage et est transféré à un tube vide se trouvant sur le dispositif (13) de bobinage, étant précisé que la portion de fil en excès est séparée d'avec l'amorce et évacuée.
  2. Procédé selon la revendication 1, caractérisé en ce que le fil de rattache du filage est freiné pendant qu'il est délivré par la bobine de rattache de filage.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que, depuis une position de disponibilité, le fil de rattache est transporté mécaniquement sur le chemin de rétrolivraison commun.
  4. Procédé selon la revendication 3, caractérisé en ce que, pour amener le fil de rattache, un dispositif mécanique d'amenée, qui tient le fil de rattache se déplace pour venir au début du chemin de rétrolivraison commun.
  5. Procédé selon la revendication 4, caractérisé en ce qu'après l'amenée du fil de rattache au dispositif mécanique d'amenée, il se forme, en avant de ce dispositif, une boucle de fil qui est consommée lors du mouvement du dispositif d'amenée pour venir au début du chemin de rétrolivraison commun.
  6. Procédé selon une ou plusieurs des revendications 1 à 5, caractérisé en ce qu'après l'amenée, au chemin de rétrolivraison commun, d'une longueur du fil de rattache suffisante pour le rattachement du fil, le fil de rattache est serré entre la bobine de rattache et un dispositif mécanique d'amenée et est coupé entre cette position et le dispositif mécanique d'amenée ; et en ce que l'extrémité libre, ainsi formée, de la portion de fil qui s'étend en direction du dispositif mécanique d'amenée est tenue pneumatiquement et, après le rattachement et après le transfert à la bobine du fil rattaché, est séparée et est évacuée pneumatiquement.
  7. Procédé selon une ou plusieurs des revendications 3 à 6, caractérisé en ce que le fil rattaché est tout d'abord délivré par le dispositif de filage par l'intermédiaire d'un dispositif mécanique d'amenée, puis transféré à une paire de rouleaux de délivrance qui se trouve entre le dispositif de filage et le dispositif d'amenée ; et en ce qu'ensuite on réduit la vitesse de délivrance du fil, produite par le dispositif mécanique d'amenée, par rapport à la vitesse de délivrance du fil produite par la paire de rouleaux de délivrance et que le surplus de fil forme une boucle ; et en ce que le fil est ensuite coupé entre la boucle et le dispositif d'amenée et que l'extrémité du fil séparée est ensuite évacuée, tandis que le fil restant en liaison avec le dispositif de filage est transféré à la bobine.
  8. Procédé selon une ou plusieurs des revendications 1 à 7, caractérisé en ce que, pour le rattachement en relation avec un changement de bobine, le fil de rattache est amené mécaniquement à un flux d'air qui amène le fil de rattache dans la ligne de pincement, ouverte, d'une paire de rouleaux auxiliaires ; en ce qu'ensuite le fil de rattache est arrêté au voisinage de son extrémité avant et qu'il se forme donc une boucle à partir du fil de rattache délivré, après comme avant ; et en ce qu'ensuite la poursuite de la délivrance du fil de rattache est interrompue et que, la ligne de pincement étant fermée et en consommant la boucle de fil, la paire de rouleaux auxiliaires est amenée dans la zone d'action d'un flux d'air aspiré, après quoi, par suite de l'entraînement de la paire de rouleaux auxiliaires et par suite de la délivrance synchrone du fil de rattache par la bobine de rattache, le fil de rattache est, en formant une réserve de rattache avec son extrémité avant, rétrolivré à une position de disponibilité à l'intérieur du dispositif de filage, après quoi le fil de rattache est coupé en avant, dans le sens du transport, de la paire de rouleaux auxiliaires; et l'extrémité du fil, qui s'étend jusqu'à la paire de rouleaux auxiliaires, est exposée à un flux d'air aspiré ; en ce qu'ensuite le rattachement se fait par libération de l'alimentation en fibres et de la réserve de rattache, puis le fil rattaché est délivré à vitesse croissante par le dispositif de filage à l'aide de la paire de rouleaux auxiliaires et est amené au flux d'air aspiré, après quoi le fil rattaché est transféré, entre le dispositif de filage et la paire de rouleaux auxiliaires, à une paire de rouleaux de délivrance ; en ce qu'ensuite, par suite de la décélération de la paire de rouleaux auxiliaires, il se forme, entre cette paire de rouleaux auxiliaires et la paire de rouleaux de délivrance, une boucle de fil, qui est tenue pneumatiquement et que l'on sépare de l'extrémité du fil qui s'étend en direction du flux d'air aspiré mentionné, de sorte que cette extrémité du fil est évacuée, après quoi l'extrémité du fil qui vient d'apparaître est transférée au tube vide mis en place entre-temps.
  9. Procédé selon une ou plusieurs des revendications 1 à 8, caractérisé en ce qu'en relation avec un changement de qualité du fil, un remplacement de la bobine se fait en deux étapes, étant précisé que dans une première étape la bobine pleine est éjectée hors du dispositif de bobinage et que le tube vide n'est mis en place dans le dispositif de bobinage que si, après la préparation de ce dispositif de bobinage pour une nouvelle qualité du fil, un rattachement est déclenché à l'aide du fil de rattache délivré par la bobine de rattache.
  10. Procédé selon une ou plusieurs des revendications 1 à 9, caractérisé en ce qu' en relation avec un changement de bobine, le processus de rattachement est surveillé pendant un intervalle de temps déterminé après le transfert sur le tube vide du fil rattaché et que le dispositif de filage s'arrête en cas de rupture du fil survenant au cours de cet intervalle de temps ; en ce qu'ensuite, les spires enroulées sur le tube vide pendant le processus de rattachement précédent sont à nouveau déroulées du tube vide ; et en ce qu'ensuite, sans exécution d'un changement de tube répété, un nouveau rattachement s'effectue à l'aide du fil de rattache délivré par la bobine de rattache.
  11. Procédé selon la revendication 10, caractérisé en ce que le fil est surveillé dans le cadre de la surveillance du processus de rattache.
  12. Procédé selon la revendication 11, caractérisé en ce que le fil est surveillé au voisinage du dispositif de bobinage.
  13. Procédé selon la revendication 11 ou 12, caractérisé en ce que le fil est surveillé en ce qui concerne un déplacement axial.
  14. Dispositif pour rattacher un fil sur un dispositif (1) de filature à fibres libérées ["open-end"], comportant un dispositif (13) de bobinage qui présente un rouleau (130) d'entraînement de bobine pour entraîner une bobine (132), comportant aussi un dispositif (20) de rétrolivraison pour rétrolivrer au dispositif (1) de filage l'extrémité d'un fil (10) rompu, comportant aussi une bobine (3) de rattache avec un fil (30) de rattache, comportant aussi un dispositif (5) d'amenée pour délivrer le fil (30) de rattache au dispositif (20) de rétrolivraison, et comportant aussi un dispositif (4) de présentation pour présenter le fil (30) de rattache devant le dispositif (5) d'amenée, pour l'exécution du procédé selon une ou plusieurs des revendications 1 à 13, caractérisé en ce que le dispositif (5) d'amenée présente une paire de rouleaux auxiliaires (52), dont l'un des rouleaux peut, en tant que galet (24) d'entraînement, s'approcher de la bobine (132), décollée de son rouleau (130) d'entraînement, et peut être entraîné à l'aide d'un mécanisme d'entraînement (404), qui peut être commandé.
  15. Dispositif selon la revendication 14, caractérisé en ce que le rouleau, conçu comme galet (24) d'entraînement de la bobine (132), et faisant partie de la paire de rouleaux auxiliaires (52), est disposé à l'extrémité libre d'un levier pivotant (54).
  16. Dispositif selon la revendication 14 ou 15, caractérisé en ce que celui (520) des rouleaux de la paire de rouleaux auxiliaires (52) qui ne peut pas s'approcher de la bobine (132) peut décoller du rouleau conçu en tant que galet (24) d'entraînement de la bobine (132).
  17. Dispositif selon une ou plusieurs des revendications 14 à 16, caractérisé en ce que celui des rouleaux, conçu en tant que galet (520) d'entraînement de la bobine (132), faisant partie de la paire de rouleaux auxiliaires (52 ) peut être remplacé et présente un premier tronçon longitudinal (240), qui collabore avec la bobine (132) et possède une forme adaptée à la bobine (132), ainsi qu'un second tronçon longitudinal (241) avec lequel collabore l'autre rouleau (520) de la paire de rouleaux auxiliaires (52).
  18. Dispositif selon la revendication 17, caractérisé en ce que le premier tronçon longitudinal (240) présente un diamètre supérieur à celui du second tronçon longitudinal (241) ; et en ce que l'on peut commander le mécanisme (404) d'entraînement de la paire de rouleaux auxiliaires (52) de façon telle que, lorsque l'on remédie à une rupture de fil, la vitesse périphérique du premier tronçon longitudinal (240) est aussi grande que la vitesse périphérique du second tronçon longitudinal (241) lors d'un rattachement en relation avec un changement de bobine.
  19. Dispositif selon la revendication 18, caractérisé en ce que, dans le cas d'une réalisation conique du premier tronçon longitudinal (240), le second tronçon longitudinal (241), cylindrique, se raccorde au plus grand diamètre du premier tronçon longitudinal (240).
  20. Dispositif selon une ou plusieurs des revendications 14 à 19, caractérisé en ce que le dispositif (4) de présentation présente un dispositif (40, 44) de retenue du fil.
  21. Dispositif selon une ou plusieurs des revendications 14 à 20, caractérisé en ce que le dispositif (4) de présentation possède une paire de rouleaux délivreurs (40) qui peuvent être entraînés.
  22. Dispositif selon la revendication 21, caractérisé en ce qu'à la paire de rouleaux délivreurs (40) et à la paire de rouleaux auxiliaires (52) correspond un moteur (404) d'entraînement commun, auquel la paire de rouleaux délivreurs (40) est reliée par l'intermédiaire d'un accouplement (402) commandé.
  23. Dispositif selon une ou plusieurs des revendications 14 à 22, caractérisé en ce que les rouleaux (400, 24) entraînés de la paire de rouleaux délivreurs (40) et de la paire de rouleaux auxiliaires (52) peuvent être entraînés avec la même vitesse périphérique efficace.
  24. Dispositif selon une ou plusieurs des revendications 14 à 23, caractérisé en ce que le dispositif (4) de présentation présente un dispositif accumulateur (43, 44).
  25. Dispositif selon la revendication 24, caractérisé en ce que le dispositif accumulateur est conçu sous forme d'une ouverture (43) d'aspiration d'air, que l'on peut mettre en oeuvre entre la paire de rouleaux délivreurs (40) et la paire de rouleaux auxiliaires (52).
  26. Dispositif selon la revendication 24 ou 25, caractérisé en ce que le dispositif accumulateur (43) est disposé entre la paire de rouleaux délivreurs (40) et la paire de rouleaux auxiliaires (52).
  27. Dispositif selon la revendication 26, caractérisé en ce que l'ouverture (43) d'aspiration d'air est disposée fixe au voisinage de la paire de rouleaux auxiliaires (52), entre la paire de rouleaux délivreurs (40) et la paire de rouleaux auxiliaires (52), et en ce qu'elle peut être commandée par un dispositif (430) de déconnection.
  28. Dispositif selon la revendication 26 ou 27, caractérisé en ce qu'un dispositif (413) de coupure du fil est prévu en avant du dispositif d'accumulation (43), dans le sens du transport.
  29. Dispositif selon la revendication 28, caractérisé en ce que le dispositif (413) de coupure du fil se trouve entre la paire de rouleaux délivreurs (40) et le dispositif accumulateur (43).
  30. Dispositif selon une ou plusieurs des revendications 14 à 29, caractérisé en ce que le dispositif (4) de présentation présente un alimenteur pneumatique (41) de fil, disposé en avant de la paire de rouleaux auxiliaires (52).
  31. Dispositif selon la revendication 30, caractérisé en ce que l'alimentateur pneumatique de fil contient un tube (41) de guidage du fil, qui s'étend de la paire de rouleaux délivreurs (40) jusqu'à la paire de rouleaux auxiliaires (52).
  32. Dispositif selon la revendication 31, caractérisé en ce que l'ouverture (43) d'aspiration d'air débouche latéralement dans l'extrémité, côté paire de rouleaux auxiliaires (52), du tube (41) de guidage du fil.
  33. Dispositif selon une ou plusieurs des revendications 28 à 32, caractérisé en ce que le dispositif (413) de coupure du fil est disposé dans le tube (41) de guidage du fil.
  34. Dispositif selon une ou plusieurs des revendications 31 à 33, caractérisé par un serre-fil (42), qui peut être commandé et qui est disposé au voisinage de l'extrémité du tube (41) de guidage du fil, du côté de l'ouverture (43) d'aspiration d'air opposé à la paire de rouleaux délivreurs (40).
  35. Dispositif selon la revendication 34, caractérisé en ce que le serre-fil (42) est disposé dans le tube (41) de guidage du fil.
  36. Dispositif selon la revendication 34 ou 35, caractérisé en ce que le serre-fil (42), qui peut être commandé, présente un organe de serrage (421), mobile, constitué d'un matériau élastique.
  37. Dispositif selon une ou plusieurs des revendications 21 à 36, caractérisé en ce que le dispositif (41) de présentation comporte une buse (411) d'air comprimé, qui est dirigée sur la ligne de pincement de la paire de rouleaux auxiliaires (52) et que l'on peut mettre en oeuvre entre la paire de rouleaux délivreurs (40) et la paire de rouleaux auxiliaires (52).
  38. Dispositif selon les revendications 31 et 37, caractérisé en ce que la buse d'air comprimé est conçue sous forme de buse (411) d'injection, qui débouche dans l'extrémité du tube (41) de guidage du fil située du côté de la paire de rouleaux délivreurs (40).
  39. Dispositif selon une ou plusieurs des revendications 16 à 38, caractérisé en ce que le mécanisme d'entraînement (53) de celui, qui peut décoller (520), des rouleaux de la paire de rouleaux auxiliaires (52), est en liaison, au point de vue commande, conjointement avec la buse (411) d'air comprimé, avec un dispositif de commande çommun.
  40. Dispositif selon une ou plusieurs des revendications 31 à 39, caractérisé en ce que le tube (41) de guidage du fil a sa forme adaptée, à son extrémité située côté de la paire de rouleaux auxiliaires (52), au coin de pincement de cette paire de rouleaux auxiliaires (52).
  41. Dispositif selon une ou plusieurs des revendications 14 à 40, caractérisé par un dispositif (6) de commande comportant plusieurs programmes (60, 61, 62, 63), que l'on peut appeler en fonction de la question de savoir si une rupture de fil survient en relation avec un changement de bobine ou indépendamment de ce changement ou bien de savoir si un changement de bobine est à effectuer en relation avec un changement de qualité de la matière textile ou indépendamment d'un tel changement.
  42. Dispositif selon une ou plusieurs des revendications 14 à 41, caractérisé en ce que le dispositif de retenue du fil est conçu sous forme de dispositif accumulateur (44) et en ce que le dispositif (4) de présentation présente un serre-fil (451) qui peut se déplacer, depuis l'un des côtés de la paire de rouleaux auxiliaires (52) se trouvant en position de réception, vers son autre côté.
  43. Dispositif selon une ou plusieurs des revendications 14 à 42, caractérisé par un dispositif de surveillance (222, 432), qui surveille le fil rattaché.
  44. Dispositif selon la revendication 43, caractérisé en ce que le dispositif de surveillance (222, 432) est associé à un dispositif (22, 431) d'évacuation du fil pour évacuer le fil avant son transfert au dispositif de bobinage (13).
  45. Dispositif selon la revendication 44, caractérisé en ce que le dispositif de surveillance (432) est associé à l'ouverture (43) d'air aspiré.
  46. Dispositif selon une ou plusieurs des revendications 43 à 45, caractérisé en ce que le dispositif de surveillance (222, 432) est conçu, en tant que dispositif de surveillance du parcours du fil, de façon telle qu'il puisse distinguer entre un fil immobile dans le sens axial et un fil mobile dans le sens axial.
  47. Dispositif selon une ou plusieurs des revendications 14 à 46, caractérisé en ce que la bobine (3) de rattache, le dispositif (4) de présentation, le dispositif d'amenée (5) et le dispositif (20) de rétrolivraison sont disposés sur une dispositif (2) de service, qui peut se déplacer le long de plusieurs dispositifs de filature à fibres libérées ["open-end"], disposés les uns à côté des autres, d'un métier à filer à fibres libérées ["open-end"].
  48. Dispositif selon la revendication 47, caractérisé en ce que l'ouverture (43) d'aspiration d'air est en liaison avec une source de vide côté métier à filer.
EP88116877A 1987-10-13 1988-10-11 Procédé et dispositif pour attacher un fil sur un métier à filer à bout libre Expired - Lifetime EP0311987B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873734565 DE3734565A1 (de) 1987-10-13 1987-10-13 Verfahren und vorrichtung zum anspinnen eines fadens an einer offenend-spinnvorrichtung
DE3734565 1987-10-13

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EP0311987A1 EP0311987A1 (fr) 1989-04-19
EP0311987B1 true EP0311987B1 (fr) 1991-11-27

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EP88116877A Expired - Lifetime EP0311987B1 (fr) 1987-10-13 1988-10-11 Procédé et dispositif pour attacher un fil sur un métier à filer à bout libre

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US (1) US5022222A (fr)
EP (1) EP0311987B1 (fr)
JP (1) JP2647169B2 (fr)
CN (1) CN1028039C (fr)
CZ (1) CZ675988A3 (fr)
DE (2) DE3734565A1 (fr)
IN (1) IN171508B (fr)

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US5473879A (en) * 1993-04-24 1995-12-12 W. Schlafhorst Ag & Co. Open-end spinning machine for producing cross-wound bobbins
EP0716169A2 (fr) 1994-12-09 1996-06-12 W. SCHLAFHORST AG & CO. Machine textile pour la fabrication de bobines à spires croisées
US5681000A (en) * 1994-09-14 1997-10-28 W. Schlafhorst Ag & Co. Servicing apparatus for a yarn package-producing textile machine
EP3652368B1 (fr) * 2017-07-14 2022-02-23 Saurer Spinning Solutions GmbH & Co. KG Procédé pour faire fonctionner un arrangement de filage à jet d'air

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DE4103902A1 (de) * 1991-02-08 1992-08-13 Schubert & Salzer Maschinen Verfahren und vorrichtung zum aufwinden eines fadens an einer spinn-spulmaschine
IT1258920B (it) * 1991-05-11 1996-03-01 Procedimento e dispositivo per l'allacciamento del filo di un dispositivo di filatura ad estremita' aperta
DE4226364C2 (de) * 1991-09-19 1996-10-02 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Spulenwechsel
DE4131179C2 (de) * 1991-09-19 1996-12-05 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Stillsetzen einer Aufwickelspule
CZ281023B6 (cs) * 1991-09-23 1996-05-15 Rieter Elitex A.S. Způsob opětovného zapředení na bezvřetenových dopřádacích strojích a zařízení k provádění tohoto způsobu
DE19517690A1 (de) * 1995-05-13 1996-11-14 Fritz Stahlecker Vorrichtung zum Bilden einer Fadenreservewicklung nach einem Spulenwechsel an einem Spinnaggregat
DE19634300A1 (de) * 1996-08-24 1998-02-26 Rieter Ingolstadt Spinnerei Verfahren und Vorrichtung zum Anspinnen eines Fadens an einer Offenend-Spinnvorrichtung
DE10139078A1 (de) * 2001-08-09 2003-02-20 Schlafhorst & Co W Verfahren und Vorrichtung zum Wiederanspinnen einer Offenend-Spinnmaschine
DE10160455A1 (de) * 2001-12-04 2003-06-18 Schurr Stahlecker & Grill Verfahren zum Vorbereiten eines Anspinnvorganges an einem Offenend-Rotorspinnaggregat
JP2012086925A (ja) * 2010-10-18 2012-05-10 Murata Machinery Ltd ボビンセット装置及びそれを備える糸巻取機
DE102013014195A1 (de) * 2012-11-10 2014-05-15 Saurer Germany Gmbh & Co. Kg Behebung einer Fadenunterbrechung beim Wickeln eines Fadens auf eine Kreuzspule
CN103437012B (zh) * 2013-08-20 2015-08-26 陕西华燕航空仪表有限公司 纺纱机自动接头装置
JP2015059277A (ja) * 2013-09-17 2015-03-30 村田機械株式会社 糸巻取機
CH709693A1 (de) 2014-05-26 2015-11-30 Rieter Ag Maschf Verfahren zum Betreiben einer Textilmaschine sowie Textilmaschine zur Herstellung von Vorgarn.
DE102014018418A1 (de) * 2014-12-11 2016-06-16 Saurer Germany Gmbh & Co. Kg Pneumatischer Abschluss des Unterfadentransports zu einer Auflaufspule sowie Spulstelle und Spulautomat zu dessen Durchführung
DE102015108740A1 (de) 2015-06-02 2016-12-08 Rieter Ingolstadt Gmbh Verfahren zum Betreiben einer Spinnmaschine mit arbeitsstelleneigenen Handlingsorganen zum Wiederanspinnen eines Fadens sowie Spinnmaschine mit arbeitsstelleneigenen Handlingsorganen
DE102015112660A1 (de) * 2015-07-31 2017-02-02 Rieter Ingolstadt Gmbh Verfahren zum Absaugen eines Fadens von einer Spule und entsprechende Vorrichtung
DE102016108423A1 (de) * 2016-05-06 2017-11-09 Rieter Ingolstadt Gmbh Verfahren zum Handhaben eines Fadenendes und Spulstelle
JP6829044B2 (ja) * 2016-10-20 2021-02-10 Ｔｍｔマシナリー株式会社 糸掛けロボット
CN108861865B (zh) * 2017-05-16 2021-07-09 欧瑞康纺织有限及两合公司 一种卷绕装置中用于辅助卷筒更换的辅助装置
DE102017116302A1 (de) 2017-07-19 2019-01-24 Maschinenfabrik Rieter Ag Verfahren zum Betreiben einer Arbeitsstelle einer Spinn- oder Spulmaschine
EP3556918B1 (fr) * 2018-04-20 2024-09-18 Lakshmi Machine Works Ltd. Agencement de levage de fil pour unité de rattachement et procédé associé
CN108588916B (zh) * 2018-05-16 2021-04-27 东华大学 转杯纺纱机负压气口吸纱操作装置
DE102019129499A1 (de) * 2019-10-31 2021-05-06 Saurer Spinning Solutions Gmbh & Co. Kg Offenend-Spinnmaschine sowie Verfahren und Steuereinrichtung zum Betreiben einer solchen Offenend-Spinnmaschine
CN111347476A (zh) * 2020-03-11 2020-06-30 湖州锦安企业管理咨询有限公司 一种基于厚度变化保证定量切割的自动化智能绕卷机
DE102021108779A1 (de) 2021-04-08 2022-10-13 Maschinenfabrik Rieter Ag Verfahren zum Betreiben einer Spinnmaschine sowie Spinnmaschine

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DE3338833A1 (de) * 1983-10-26 1985-05-09 Fritz 7347 Bad Überkingen Stahlecker Verfahren und vorrichtung zum anspinnen eines garnes an einem spinnaggregat einer oe-friktions-spinnmaschine
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5473879A (en) * 1993-04-24 1995-12-12 W. Schlafhorst Ag & Co. Open-end spinning machine for producing cross-wound bobbins
US5681000A (en) * 1994-09-14 1997-10-28 W. Schlafhorst Ag & Co. Servicing apparatus for a yarn package-producing textile machine
DE4432702B4 (de) * 1994-09-14 2005-08-18 Saurer Gmbh & Co. Kg Serviceeinrichtung für eine Kreuzspulen herstellende Textilmaschine
EP0716169A2 (fr) 1994-12-09 1996-06-12 W. SCHLAFHORST AG & CO. Machine textile pour la fabrication de bobines à spires croisées
US5634602A (en) * 1994-12-09 1997-06-03 W. Schlafhorst Ag & Co. Open end spinning machine with associated service device
EP3652368B1 (fr) * 2017-07-14 2022-02-23 Saurer Spinning Solutions GmbH & Co. KG Procédé pour faire fonctionner un arrangement de filage à jet d'air

Also Published As

Publication number Publication date
IN171508B (fr) 1992-10-31
EP0311987A1 (fr) 1989-04-19
DE3734565A1 (de) 1989-05-03
DE3734565C2 (fr) 1991-09-05
US5022222A (en) 1991-06-11
JP2647169B2 (ja) 1997-08-27
CN1032824A (zh) 1989-05-10
CZ675988A3 (en) 1993-02-17
DE3866502D1 (de) 1992-01-09
JPH026639A (ja) 1990-01-10
CN1028039C (zh) 1995-03-29

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