EP0805118A1 - Winding station of cross wound package producing textile winding machine - Google Patents

Abstract

A first winding station (1) of a textile machine producing crossover reels has apparatus to capture the thread end of a spinning cop to be rewound, there being a device for loosening the cop thread end and transferring it to a gripping tube which can have air under suction applied as part of a splicing device. A thread capture and transfer apparatus (14) at an unwinding position (I) handles the thread end (57) from a take-off cop (2') to form an under-thread (40) and thread it into an inspection device (18) located in the thread path. This procedure can be repeated without problem as needed. Also claimed is a second winding station where, in the region of the unwinding position (I), a thread capture device (15) can be connected via a swivelling tube (16) to a suction cup (17) which has a sideways facing open connection on which the gripping tube (13) can dock.

Description

The invention relates to a winding unit of a textile machine producing cross-wound bobbins according to the preamble of claim 1.

Spooling stations designed in this way are known, for example, from DE 38 12 643 A1 or from DE 42 41 992 A1.

DE 38 12 643 A1 describes a device which has a cover enclosing the spinning cop in the unwinding position and a thread balloon guide arranged above this cover with an air injection nozzle. The air injection nozzle conveys the thread end to a transfer tube which can be acted upon by suction and is parked in a ready position and which is pivoted in centrally from above via the thread balloon guiding device. The transfer tube then transfers the sucked thread end into a splicer.

A disadvantage of this known device is, inter alia, that the transmission tube for receiving the thread end is positioned directly in the thread path, which has a disadvantageous effect, in particular in connection with a thread break circuit.

In the device according to DE 42 41 992 A1, a thread catch funnel is installed above a pay-off spool positioned in a waiting position and merges into a tubular connecting piece with a lateral suction opening. The thread funnel and the connector have a slot-like opening pointing in the direction of head transport, which enables the thread end to pass through. A swivel-mounted gripper tube can be docked onto the side suction opening of the connector.

This known device makes it possible to prepare the thread end of a reel to be rewound early enough so that the rewinding process can be started as soon as the spinning cop is moved into the rewinding position.

It has been found, however, that problems can occur with this device if a thread break occurs in a spinning cop standing in the running position, since the use of the gripper tube is necessary to eliminate a thread break. Since, in this case, the hook tube has already gripped the thread end of the cop parked in the waiting position, complications can arise.

Furthermore, DE 44 22 596 A1 describes a device installed at the winding stations of an automatic winder, in which the presence of the lower thread drawn off by the cop is detected by means of a sensor element.
The thread detected by a thread gripping element initiates a dynamic thread signal in the sensor, which indicates the presence of the lower thread.
If the lower thread is present, the thread end connection process initiated on the basis of a cleaner cut is continued, while if there is no corresponding signal, the thread end connection process is interrupted and a cop changing circuit is initiated.

In this known device, both the control of the thread gripping elements required for the thread end connection process and the control of the operating elements used in connection with a cop changing process are carried out mechanically, that is to say via cam disk packages which are acted upon by a common drive.

Since cam disks, which usually perform a 360 ° rotation with every switching operation, mostly for a given one Direction of rotation are designed, it is not entirely unproblematic with these known devices to stop the thread connection process in the absence of the dynamic thread signal and to immediately return the cam disk packs to their zero position.

The post-published DE 195 39 762.2 also discloses automatic winding machines, the winding stations of which each have a separate drive for the thread connecting device and a separate drive for the bobbin changing device. The drive for the bobbin changing device is formed by a stepper motor which can be controlled in a defined manner by the winding station computer and which, via a gear arrangement, drives a cam disk package for actuating various handling devices and for advancing a round magazine receiving spinning bobbins. This means that by using a separate stepper motor for the bobbin changing device, the cam disk package for the thread connecting device and the cam disk pack for the bobbin changing device can be mechanically separated, so that largely independent operation of the respective handling devices, for example with separate feed and return, is possible.

Starting from devices of the type described above, the invention has for its object to improve such devices.

This object is achieved according to the invention by a device as described in claims 1 and 9, respectively.

Advantageous embodiments of the invention are the subject of the dependent claims.

The embodiment of the invention has the particular advantage that a thread control device, which monitors the correct transfer of the lower thread picked up on the feed cop, can be positioned directly below the hook tube in the regular thread travel path, without the thread end transfer to the hook tube being hindered by this thread control device.
The thread control device is fixed in a simple manner stationary on the bobbin case.

Due to the advantageous embodiment described in claim 2, that is, by using an independent, separate drive for the units of the cop changing device, the prerequisite is also created to position the swivel tube several times in succession in its different working positions, so that there is the possibility, if necessary to repeat the thread end detachment and transfer process or the thread threading process into the thread control device easily and very quickly.

The advantageous embodiment described in claim 3 ensures that the position of the swivel tube can be adapted directly to the actual conditions at the winding position in question, ie, thread caught or thread not caught.
In the case of a swivel tube positioned in its operating position, for example, the absence of a corresponding signal from the thread control device immediately leads to the swivel tube being swiveled back into its thread end transfer position (claim 4) without a thread end connection attempt, which has to fail due to the missing bobbin thread, being started beforehand.

In a preferred embodiment, the drive device for positioning the swivel tube consists of a reversible one Drive unit that drives a cam disk package via a reduction gear. The reversible electric motor that is used offers the possibility of turning the cam disk package backwards, at least to a limited extent, so that, if necessary, the cam disk packet can be quickly turned back to its zero position and thus the swivel tube can be positioned directly in its thread end transfer position without this being possible Cam package must complete one full turn beforehand.

A stepper motor is preferably selected as the reversible drive unit, as set out in claim 6. Such stepper motors have the advantage that, on the one hand, they are quite inexpensive, on the other hand, predetermined angles of rotation can be exactly maintained with such drive units. In addition, additional starting or safety clutches or the like can be dispensed with when using such motors.

In conjunction with a corresponding cam disk transmission, a stepper motor represents a relatively inexpensive and reliable construction in order to control various handling devices required in connection with a cop changing process in a defined manner. This applies in particular if reruns have to be scheduled (claim 7).

With regard to the hook tube, which is used both in the thread end connection process and in the bobbin change circuit, in a preferred embodiment it is provided that the cam for controlling the hook tube is designed in such a way that the hook tube can easily be moved from its intermediate position in the initial region of its swiveling movement to its thread end receiving position if necessary can be pivoted back, so that no passage of the cam plate package is necessary even when swiveling the swivel tube (claim 8).

The device described in claim 9 has the particular advantage that the thread end, which is preferably available in the area of the sleeve tip of the payout spool, is pneumatically detached from the sleeve tip in a simple manner and by means of an air flow in the area of the thread end receiving device via a swivel tube directly to a stand-by on the suction bell. vacuum-loaded gripper tube can be transferred. The hook tube is advantageously positioned outside the thread travel path, so that the thread is in no way hindered by the hook tube during the rewinding process.

Further advantages of such an embodiment are to be seen in the fact that thread treatment or thread control devices can be positioned firmly in the region of the thread path of the lower thread without impeding the thread transfer, since the relatively short hook tube detaches the lower thread, which is held in a takeover position, as a tensioned thread tendon in at least approximately introduces these devices horizontally. The gripper tube is advantageously the same for all machine types, irrespective of the type of the supply reel template, for example a round magazine, rotating transport plates, etc. The length of the spinning bobbins presented also has no influence on the length of the gripper tube.

In an advantageous embodiment of the invention, the thread end take-up device, as set out in claim 10, is designed as a bell, so that a blowing air flow applied via a blowing nozzle arrangement acts directly on the thread end deposited in the region of the tube tip. In a modified embodiment, however, a device can also be provided in which a thread end deposited in the sleeve interior is blown into or into the thread end receiving device by means of a blowing nozzle arranged centrally under the cop, as is known, for example, from DE 38 12 643 A1 is sucked in. In addition, blowing nozzles could also be arranged in the area of the bobbin foot or above, whereby the thread end can also be fed to the hook tube after a thread break, possibly even after advanced bobbin travel.

In a preferred embodiment, as set out in claim 11, the working height of the bell can be adjusted. In this way it is possible, for example, to react flexibly to a new cop size when changing lots. This means that the working height of the bell can be optimally adapted to the size of the cop used, which has a very positive effect on the efficiency of the thread take-up and transfer device.

As set out in claim 12, the blow bell consists of two main components. An inner base body is slidably mounted on a corresponding holder of the winding unit, for example via an elongated hole guide, and can thus be easily adjusted to different working heights. A sleeve is slidably guided on this base body, which can be easily lowered into an operating position by means of a special actuating device, in which the sleeve at least partially surrounds the winding cone of the payout spool, as stated in claim 13.

Since the main body of the bell, as described in claim 14, is simultaneously designed as a thread take-off accelerator, that is to say has an inner contour which counteracts the balloon effect of the thread during the take-off, the device according to the invention enables high thread take-off speeds.

The blowing nozzle arrangement described in claim 15 ensures a directed towards the winding cone Compressed air flow that reliably detaches the thread end from the sleeve tip and pneumatically conveys it to the looper tube via the swivel tube and the suction bell. The vacuum in the hook tube effectively supports the transport of the loosened thread end.

Since the blow bell is adjustable in its working height, while the installation position of the suction bell to which the gripper tube is docked is fixed, it is in the interest of a continuous pneumatic thread guide if the pivot tube, as stated in claim 16, with its length on the respective installation height of the bell can be adjusted.

In a preferred embodiment it is therefore provided (claim 17) that the swivel tube is designed as a telescopic tube. In this case, an inner tube is preferably connected to the base body of the blowing nozzle with limited mobility, while an outer tube is connected to a swivel drive which is adapted to the suction bell with respect to its installation position.

The suction bell has a continuous, slit-like thread outlet opening, which enables the thread to easily change over to the area of the regular thread travel path when pivoting the swivel tube back into its operating position and simultaneously swiveling the hook tube back into an intermediate position.

As described in claim 19, the thread is automatically threaded into a thread control and cutting device when the pivoting tube is pivoted back into its operating position or when the hook tube is pivoted into its intermediate position.
This thread control and cutting device, as set out in claim 20, preferably has a lower thread sensor and a residual thread scissors.

The bobbin thread sensor monitors the successful transfer of the bobbin thread, that is, if the bobbin thread sensor does not detect a thread, the initiation of an upper thread take-up circuit is initially dispensed with and a new attempt is started instead to take up the lower thread.
The remaining thread scissors, which basically operate at the beginning of every cop changing circuit, prevent trailing threads from being formed in the event of a failed splicing process.

Fig. 1

eine Spulstelle eines Kreuzspulautomaten in Seitenansicht,

Fig. 2

das untere Spulstellengehäuseteil einer Spulstelle mit Blick auf die Antriebsvorrichtung der Kopswechseleinrichtung.

Fig. 3

eine erfindungsgemäße Fadenendaufnahme- und - überführungsvorrichtung in ihrer Ausgangsstellung,

Fig. 4

die Vorrichtung gemäß Fig. 3 während der Überführung des Fadenendes an das an die Saugglocke angedockte Greiferrohr,

Fig. 5

die erfindungsgemäße Vorrichtung während des Einfädelns des Fadenendes in eine Fadenkontroll- und -schneideinrichtung,

Fig. 6

eine weitere, bevorzugte Ausführungsform des Schwenkrohres.

Further details of the invention can be found in an exemplary embodiment illustrated below with reference to the drawings.
It shows:

Fig. 1

a winding unit of an automatic winder in side view,

Fig. 2

the lower winding unit housing part of a winding unit with a view of the drive device of the cop changing device.

Fig. 3

a thread end take-up and transfer device according to the invention in its initial position,

Fig. 4

3 during the transfer of the thread end to the gripper tube docked to the suction bell,

Fig. 5

the device according to the invention during the threading of the thread end into a thread control and cutting device,

Fig. 6

another preferred embodiment of the swivel tube.

1 shows a side view of a winding station of a textile machine producing cross-wound bobbins, identified overall by reference number 1. Such textile machines known as automatic winder machines have a large number of winding stations 1 arranged next to one another, on which spinning reels 2 are rewound to form large-volume cross-wound bobbins 3.
The spinning heads 2 reach the individual winding units via a transport device 4 arranged in the bottom area of the textile machine.

As indicated in FIG. 1 and known per se, such transport devices 4 have a multiplicity of different transport routes on which the spinning heads 2 standing upright on transport plates 5 are transported. Only the bobbin feed path 6, the reversing path 7, the empty tube discharge path 8 and one of the transverse transport paths 9 leading to the individual winding positions 1 are shown. As is known, the spinning bobbins 2 reach the region of a unwinding position I via the transverse transport path 9, where the transport plate 5 is stopped by a positioning means 27 and the respective front winding reel, referred to as spinning bobbins 2 ', is rewound.

Each winding unit has a number of handling elements which enable the thread end of the spinning cop 2 'to be connected to the thread end of the cheese 3 held in a winding frame 10. Important devices in this context are a swivel-mounted suction nozzle 11 for picking up the upper thread from the surface of the package 3, a gripper tube 13 subjected to suction air, and a splicing device 12. The suction nozzle 11 inserts the upper thread into the splicing device 12, while the gripper tube 13 does the same Spinning cops 2 'originating thread end 57, the so-called lower thread 40, positioned in the splicing device 12. The special thread end take-up and - Transfer device for handling the thread end 57 on the spinning cop 2 bears the reference number 14.

1 shows three spinning heads 2 conveyed via the transverse transport path 9 into the region of a winding station 1, the spinning head 2 ′ being fixed in a unwinding position I by transport plate positioning means 27. Positioned above the spinning cop 2 'is the thread end receiving and transfer device 14, which essentially consists of a blow bell 15, a swivel tube 16 and a suction bell 17. In front of a thread outlet opening 35 of the suction bell 17, a thread control and cutting device 18 is arranged in the region of the regular thread path II.

The blow bell 15 essentially consists of a base body which can be fixed in place on the winding unit housing 21 with respect to its working height by means of a holder. The base body is covered by a sleeve which is slidably attached to the base body and can be extended downward in the direction of arrow 23 via an actuating device. A pneumatic cylinder or a cam-controlled actuating lever can, for example, be provided as the actuating device for vertically displacing the sleeve of the blow bell. The corresponding cam is preferably acted upon by the stepper motor. The main body of the bell is equipped in such a way that its inner contour forms a thread take-off accelerator. In addition, the base body is connected to the swivel tube 16 via an articulated connection, for example a ball joint connection 25. The blow bell 15 also has a blow nozzle arrangement which is connected to a compressed air source via a corresponding pneumatic line.

The swivel tube 16, which is preferably designed as a telescopic tube, is controlled by a cam disk Swiveling device 32 can be transferred from the starting or operating position (BS) shown in FIG. 2 to the thread end transfer position (FÜS) indicated in FIG. 1. In the thread end transfer position, the swivel tube 16 connects the blow bell 15 with the suction bell 17. The suction bell 17, which is open at the bottom, has a lateral connection opening 33 to which the swivel-mounted gripper tube 13, which is connected to a vacuum source 34, can be docked. The suction bell 17 also has the slot-like thread passage opening 35 pointing in the direction of head transport R.

As shown in FIG. 2, the handling devices of the cop changing device, identified overall by the reference number 19, are driven by means of a stepping motor 29 controlled by the winding station computer 36. The stepping motor 29 acts on a cam disk package 31 via a gear arrangement 30. The control levers 20, 22 are located on the cam disk package 31 which, via further lever linkages 24, 26, control the handling device of the cop changing device 19, that is to say the transport plate positioning means 27 and the swivel tube 16.

The stepper motor 29 controlled via the winding unit computer 36 is fixed to the winding unit housing 21 via a bearing plate 37 or the like. The pinion 39 of the stepping motor 29 meshes with the input wheel of a gear arrangement, generally designated 30. The output wheel of this gear arrangement 30 is in turn in engagement with a gear 41 which is connected to the cam disk package 31. As can be seen, there is a significant reduction in the speed of the stepper motor, which is usually 240 to 500 1 / min, due to the gear arrangement 30. Due to the relatively low speeds and the relatively low torques to be transmitted, the transmission can remain unencapsulated, the gears are preferably made of plastic.

3 shows three spinning heads 2, which are conveyed over a transverse transport path 9 in the region of a winding station 1, the spinning head 2 ′ being fixed in a winding position I by positioning means 27. The thread end receiving and transfer device 14 is positioned above the spinning cop 2 ' and, as already mentioned above, essentially consists of a blow bell 15, a swivel tube 16 and a suction bell 17. A thread control and cutting device 18 is also arranged in the area in front of a thread outlet opening 35 of the suction bell 17.
As can be seen in particular from the exemplary embodiment shown in FIG. 6, the blow bell 15 consists of a base body 44 which can be fixed on the winding unit housing 21 in an adjustable manner with respect to its working height H via a holder 45. The base body 44 is covered by a sleeve 46 which is slidably attached to the base body 44 and can be extended downwards via an actuating device 47.

The base body 44 is equipped so that its inner contour forms a thread take-off accelerator 38. In addition, the base body is connected to the swivel tube 16 via an articulated connection, for example a ball joint connection 25 or a flexible hose 28.

The sleeve 46 has a blow nozzle arrangement 48, which is connected to a compressed air source 51 via a corresponding pneumatic line 49, into which a directional valve 50 or the like is switched on. The actuating device 47 is designed, for example, as a pneumatic cylinder 52 or as a cam-operated actuating lever (not shown).

The swivel tube 16, which can be designed as a telescopic tube 53, as shown in the exemplary embodiment in FIG. 6, is moved from the swivel device 32 shown in the FIGS 3 and 5 illustrated starting or operating position in the thread end transfer position shown in FIGS. 4 and 6 can be transferred. In the thread end transfer position according to FIGS. 4 and 6, the swivel tube 16 connects the blow bell 15 to the suction bell 17.

Function of the facility:

Spinning heads 2 are constantly transported into the region of the winding stations I via the transport device 4, the respective front spinning head, designated 2 ′ , being fixed in a winding position I by positioning means 27. In the region of the winding position I, as shown, above the spinning cop 2 ', the thread end take-up and transfer device 14 is arranged, which assumes its starting position at this time. As already mentioned above, the working height H of the blower bell 15 can be adjusted exactly to the length of the spinning heads 2 ′ to be processed via a holder 45.

Subsequently (FIG. 4), the sleeve 46 of the blower bell 15 is lowered via the winding cone 54 of the spinning cop 2 ' via the actuating device 47 and the blower nozzle arrangement 48 is acted on via the directional valve 50. The resulting blown air flow 55 in the area of the blower bell 15 pneumatically detaches the thread end 57, for example provided at the sleeve tip 56, and conveys it to the suction bell 17 via the swivel tube 16 pivoted into its thread end transfer position FÜS.
At this time, the gripper tube 13 is docked onto a lateral connection opening 33 of the suction bell 17 and is in turn connected to a vacuum source 34. That is, the detached thread end 57, which forms the lower thread 40, is sucked into the hook tube 13 via the blow bell 15, the swivel tube 16 and the suction bell 17.

In the next step, the swivel tube 16 swivels back into the starting or operating position BS indicated in FIG. 5. At the same time, the gripper tube 13 moves into the intermediate position shown. The lower thread 40 is threaded through the slit-like thread passage opening 35 in the suction cup 17 into a thread control and cutting device 18 positioned in front of the opening 35.
The thread control and cutting device 18 consists in particular of a lower thread sensor 43 and a residual thread scissors 42.

If the lower thread sensor 43 detects that there is no lower thread 40, the start of the upper thread take-up circuit is suppressed and at least one new attempt is started to insert the lower thread 40 into the splicing device 12.
If this attempt also fails, a cop change circuit is carried out, that is, the spinning cop 2 ' is removed from the winding position I and replaced by the spinning cop 2 positioned in the waiting position, which thus becomes the spinning cop 2 ' .

The remaining thread scissors 42 are actuated automatically with each bobbin changing circuit. Although this means that 80% to 90% of all cuts go nowhere, it is ensured in this way that when changing the bobbin no bobbin thread can get caught in the bobbin, which is then pulled as a drag thread through the textile machine and there complications can lead.

abgesenkt und über den Schrittmotor 29 beziehungsweise das nachgeschaltete Kurvenscheibengetriebe wird das Schwenkrohr 16 wieder in die Fadenendübergabestellung FÜS geschwenkt. Anschließend wird über die Blasdüsenanordnung 48 in der Blasglocke 15 erneut versucht das Fadenende 57 vom Spinnkops 2' zu lösen. Der Unterfaden 40 wird über das Schwenkrohr 16 an die Saugglocke 17 und damit an das in der Fadenendaufnahmestellung positionierte Greiferrohr 13 überführt. Das Greiferrohr 13 schwenkt im Anschluß wieder in die Zwischenstellung ZS und fädelt dabei, unter Mithilfe des in die Betriebsstellung BS einschwenkenden Schwenkrohres 16 , den Unterfaden 40 in die Fadenkontrolleinrichtung 18 ein. Das Greiferrohr 13 wird dabei über ein (nicht dargestelltes) Kurvenscheibengetriebe, das von einem vorzugsweise reversierbaren Elektromotor, z.B.einem Schrittmotor, angetrieben wird, beaufschlagt .If the lower thread sensor 43 detects that there is no lower thread 40, the start of an upper thread take-up circuit, that is, the start of a thread end connection search, is suppressed and at least one new attempt is first started to take up the lower thread 40 by means of the thread end take-up and transfer device 14. This means that the bell 15 is again over the cone 54 of the Spinning cops 2

lowered and the swivel tube 16 is pivoted back into the thread end transfer position FÜS via the stepper motor 29 or the downstream cam gear. Subsequently, an attempt is made to detach the thread end 57 from the spinning cop 2 'via the blowing nozzle arrangement 48 in the blowing bell 15. The lower thread 40 is transferred via the swivel tube 16 to the suction bell 17 and thus to the hook tube 13 positioned in the thread end take-up position. The looper tube 13 then pivots again into the intermediate position ZS and threads the lower thread 40 into the thread control device 18 with the aid of the swivel tube 16 pivoting into the operating position BS. The gripper tube 13 is acted upon by a cam gear (not shown) which is driven by a preferably reversible electric motor, for example a stepper motor.

In an alternative embodiment, a separate drive for the gripper tube 13 can also be provided

If the new attempt or an adjustable number of further attempts also fails, the cop changing circuit is activated, i.e. the spinning cop 2 'is removed from the unwinding position I and replaced by the spinning cop 2 positioned in the waiting position, which thus becomes the spinning cop 2' .

Overall, the device according to the invention represents an uncomplicated and reliable device which ensures a quick and safe pick-up of the thread end from a spinning cop 2 'and a reliable transfer of the thread end to a pivotably mounted gripper tube 13.

Claims (20)

Spooling station of a textile machine producing cross-wound bobbins, with a device for receiving the thread end of a spinning cop to be rewound, the device having a device for pneumatically detaching and transferring the thread end of the spinning cop to a gripper tube which can be acted upon by suction air and which inserts the thread end into a splicing device,
characterized, - That in the region of a unwinding position (I) of a winding unit (1) has a thread end pick-up and transfer device (14) for handling a thread end (57) of an original cop (2nd

) and a thread control device (18) are arranged in the thread travel path (II), the thread end (57) forming a lower thread (40) being threadable into the thread control device (18) by means of the thread end take-up and transfer device (14) and the thread end detachment and End threading process can be easily repeated if necessary. Bobbin according to claim 2, characterized in - That in the region of a unwinding position (I) of the winding unit (1) a thread end pick-up and transfer device (14) is arranged, which comprises a suction bell (17) positioned outside the regular thread path (II), to which a gripper tube (13) which can be acted upon by suction air is dockable, - That the thread end receiving and transfer device (14) has a thread end release means (15) which can be connected via a swivel tube (16) to the suction bell (17), the swivel tube (16) being defined between an operating position by means of a drive (29) (BS), at which the swivel tube (16) is positioned in the area of the thread path (II) and a thread end transfer position (FÜS) in which the swivel tube (16) is connected to the suction cup (17) is adjustable and - That a thread control device (18) is arranged in the region of the thread path (II). Winding unit according to claim 2, characterized in that the drive (29) acting on the swivel tube (16) and the thread control device (18) are functionally connected via a winding unit computer (36). Winding unit according to Claims 1 to 3, characterized in that the swivel tube (16) positioned in the operating position (BS) can be swiveled back directly into the thread end transfer position (FÜS) depending on a corresponding signal from the thread control device (18). Winding unit according to claims 1 to 4, characterized in that the drive device for the defined positioning of the swivel tube (16) in the operating position (BS) or in the thread end transfer position (FÜS) comprises a reversible drive unit (29) and a cam disc gear (31). Winding unit according to claim 5, characterized in that the drive unit (29) is designed as a stepper motor. Winding unit according to claim 6, characterized in that the stepping motor (29) or the associated cam disc gear (31) can be used to carry out a defined application of all the handling devices (transport plate positioning means 27, swivel tube 16, etc.) required in connection with a cop changing circuit. Winding station according to claims 1 and 2, characterized in that the gripper tube (13) can be positioned in an intermediate position (ZS) for threading the thread end (57) picked up on the spinning cop (2 ') into the thread control device (18) and off if there is no corresponding thread control signal this intermediate position (ZS) can be pivoted back directly into the thread end take-up position (FÜS). Spooling station of a textile machine producing cross-wound bobbins, with a device for receiving the thread end of a spinning cop to be rewound, the device having a device for pneumatically detaching and transferring the thread end of the spinning cop to a gripper tube which can be acted upon by suction air and which inserts the thread end into a splicing device,
characterized, - That in the region of an unwinding position (I) of the winding unit (1) a via a swivel tube (16) to a suction cup (17) connectable thread end receiving device (15) is arranged, the suction cup (17) having a lateral connection opening (33) for docking the Has gripper tube (13) which can be acted upon by air. Winding unit according to claim 9, characterized in that the thread take-up device (15) is designed as a blow bell. Winding unit according to claims 9 and 10, characterized in that the working height (H) of the blow bell (15) is adjustable. Winding unit according to claims 9 to 11, characterized in that the blow bell (15) consists of a base body (44) which is adjustable with respect to the working height (H) and a sleeve (46) which is displaceable relative to the base body. Winding unit according to claim 12, characterized in that the sleeve (46) is arranged so as to be displaceable via an actuating device (47) in such a way that the lowered sleeve (46) at least the winding cone (54) of a spinning cop (2 ' ) positioned in the unwinding position (I) partially encloses. Winding unit according to claim 12, characterized in that the base body (44) of the blow bell (15) is designed as a thread take-off accelerator (38). Winding station according to claims 12 and 13, characterized in that the sleeve (46) has a blowing nozzle arrangement (48) which can be pressurized with compressed air. Winding unit according to claim 9, characterized in that the swivel tube (16) is variable in its length (L). Winding unit according to claim 16, characterized in that the swivel tube (16) is designed as a telescopic tube (53), a first tube part being connected to a swivel drive (32) and a second tube part being connected to the blow bell (15). Winding unit according to claim 9, characterized in that the suction bell (17) has a continuous, slit-like opening (35) for the passage of the lower thread (40) contained in the hook tube (13). Winding unit according to claim 9, characterized in that a thread control and cutting device (18) is positioned in the area in front of the slot-like thread passage opening (35). Bobbin winder according to Claim 19, characterized in that the thread control and cutting device (18) has a lower thread sensor (43) and a residual thread scissors (42).

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