EP0757658B1 - Process and device for exchanging empty bobbins for full bobbins in a winding machine for continuously supplied threads - Google Patents

Abstract

A winding device for continuously supplied threads (1) has a winding revolver (5) on which are mounted two winding spindles (6, 7) on which bobbins (10) are alternatively formed. The bobbins are exchanged by an automatic control (doffer) in two positions of the winding revolver (5) that is cyclically moved as the bobbin increases in size on the operation spindle (6). Both positions for pushing the full bobbin(s) out and for pushing the empty bobbin(s) (8, 9) on the previously emptied stationary spindle (7) may be located anywhere within the exchange area (41) since the bobbin-carrying cores of the stationary spindle (7) operating robot are tracked by appropriate sensors.

Description

The invention relates to a method according to the preamble of Claim 1 and a device according to the preamble of the claim 12th

Such a method and a device for execution the method are known from WO 93/17949. The well-known Device has a winding turret with two winding spindles, by rotating the winding turret alternately into the winding area and brought into an exchange area, in which The full coils are pushed off on the one hand and then the empty tubes are pushed onto the unloaded winding spindle.

Furthermore, the two winding spindles are clearly differentiated the winding spindle located in the winding area as the operating spindle and the winding spindle in the changing area called rest spindle.

In a known winding machine according to EP 0 374 536B on At the end of a winding cycle, the full bobbins are removed from the rest spindle and exchanged for empty tubes because the thread is continuous continues to flow. To carry out the bobbin change the winding machine with an automatic control unit to carry out equipped automatic spool change, such as it through the ones directed to automatic machines for fast winding machines Brochures Aut 14 (d) "Doffer WD5" or Aut 15 (d) "Doffer WD9 "from Barmag AG is known. Such an automatic operator has a spool for taking over the finished spools from the rest spindle and a second mandrel to supply the unloaded winding spindle with new empty tubes.

Because the winding spindles due to the compact design of such winding machines are relatively narrow and those that have become common high winding speeds quickly in diameter increasing coils on the operating spindle against those still on the Full coils located at rest spindle grow, lead in particular when winding threads and yarns with stronger titers, for example of carpet yarn, high winding speeds to a rapid increase in the coil diameter and consequently too quick successive bobbin changes with relatively little Split times between the individual changes.

It should be borne in mind that evading the growing Coil opposite the essentially stationary on a rocker stored feeler or friction roller and the traversing device, by the turret equipped with two winding spindles rotated further by a stepper motor controlled by a sensor becomes. This in turn also leads to the full spool with the resting spindle during the doffing process and so from the axis of the on the doffer to accommodate the full bobbins provided coil mandrel emigrates.

Accordingly, there is only a limited parking time for changing the bobbin available while removing the full spools and putting them on the empty tubes require a minimum change time. Here It is particularly important to note that the on the doffer to hold the full spool provided spool mandrel and the mandrel for sliding the empty tubes during the process of changing the bobbin with the Spool spindle must be aligned.

In the winding machine described in the aforementioned WO 93/17949 is the task, despite the short distance of the Spool spindles have a sufficient change time for changing the full spools against empty sleeves available through a process solved, in which two defined in the change area Stopping positions are provided and the spool change in two Stages. Such a way of working contrasts with that previously known methods represent a significant improvement. The extension of the changeover times alleviates the problems of the bobbin change during the continuous winding of Chemical threads with textile and technical thread titers.

The object of the invention is now the known method for Reel change in accordance with the preamble of the claim to further develop that the spool change no longer after one Rigid flowchart is more flexible and with one to the adapted to change thread takes place so that the with the automatic operator (doffer) entrusted with changing the bobbin only as short as possible at the take-up point.

The task is in a generic method by Characteristic of claim 1 solved.

The measure according to the invention is used for changing the bobbin a margin for the coordination between the individual winding heads and the doffer performing the bobbin change, so that the operator control no longer than absolutely necessary on the respective winding unit is held. The course of the The bobbin change is now carried out by the machine or Doffer control set and is specified by the claim 2 Parameters dependent. The initiation of the spool change takes place depending on the availability of the doffer at the the bobbin signaling the bobbin change.

When determining the change range, factors such as those in Question coming take-up speeds, the dimensions of the individual bobbins as well as the bobbins generated and the spacing as well as the respective thread titers. The start of the change range is determined by that the rest spindle their change position at the earliest with the Retract the operating spindle into the winding position at the beginning a new winding trip reached, but possibly one for the Initiation of the movements more usable, less time Scope can be beneficial.

It is therefore envisaged that the beginning of the change range by one Rotation angle of 180 ° behind the turret at the beginning of the Winding process. The size of the change area should taking into account the factors listed above a rotation angle of at least 15 ° and at most 75 °, preferred range from 30 ° to 60 °.

In the method according to the invention, at least from the entry the winding spindle to be doffed in the change range of the operator control or its changing facilities by monitoring and Control devices of the winding spindle tracked exactly aligned. According to the invention, the automatic control can be tracked or its changing devices depending on the machine control supplied control signals of the respective winding head or depending on control signals from the operator control respectively.

In one embodiment of the method according to the invention a free operator a short time before Swing the turret into the changing area Coil change signaled so that it goes to the concerned Coil head is called. After adjusting the spool the finished bobbins from the bobbin winder deported. Then the bobbin carrying the empty tubes of the automatic control unit (doffers) and the meanwhile continued moving idle spindle until the axes aligned with each other and the empty tubes from the spool of the Doffers can be pushed onto the unloaded winding spindle.

In an advantageous embodiment of the method according to the invention it is provided that the tracking of the spool of the Doffers for alignment with the idle spindle from the machine control of the respective winding head. Here is by a continuous recording of the position of the resting spindle to be hoped for and the availability of the recorded position data Possibility created when the operator control is available (Doffers) whose spool and then its sleeve attachment using the recorded position data of the doffing spindle in exact alignment with to bring and hold the resting spindle.

According to the spool change - depending on the respective Conditions such as winding speed, thread titer, Coil dimensions and the like. - Are carried out without the Reel change intervened in the rotary drive of the turret becomes. To do this, the doffer evaluating the changing Position data of the moving rest spindle always precise Change position held, i.e. its mandrel to accommodate the Full spools are fed to the rest spindle. This takes place Changing the bobbin and equipping the bobbin spindle with empty tubes without a fixed schedule as soon as an operator control is available for this. In a plurality of winding machines and operating machines can result in investment costs can be saved, since possibly only a smaller number of Operator control is needed.

A device for performing the method according to the invention arises from the claim 12. The fact that at least within the changing range of the coil mandrel of the operator control (des Doffers) the movement of the winding spindle to be doffed and is held in their axial extension, there is Possibility of the process of transferring empty tubes at any Initiate position within the exchange area.

According to the invention, the tracking device consists of a touch device and a reflector device cooperating with this. According to the invention, the sensing device can or the reflector device on the winding head, in particular on the Heads of the winding spindles of the winding head, and accordingly the Reflector device or the feeler device on the head of the coil mandrel be provided; however, one is generally preferred Tracking device, each with the touch device on the head the coil mandrel of the automatic control unit (the doffer) and the one with the Probe device interacting reflector device on the Automatic end face of each winding spindle is.

In an advantageous embodiment of the tracking device according to the invention the mandrel is designed as a support tube and the probe device according to the invention on the opposite Spool-facing end face one in the tubular Spool mandrel mounted axially displaceable mandrel insert. Thereby is achieved that the coil mandrel and the dofferseite part of the Tracking device independently of one another in the axis of the Spool mandrel are movable. With such an execution results also the possibility without affecting the movement of the Spool mandrel the sensing device in an axial bore of the mandrel insert led signal line with the doffer control connect to.

In the case of one essentially characterized by mechanical means The probe consists of a positioning pin on the end face of the spool and an associated Reflector device which is concave and which free face of the winding spindle covered. Regarding the details reference is made to the detailed drawing description.

The positioning pin is used to track the spool on the doffer for example, by advancing the mandrel insert in the direction on the end face of the bobbin carrying the full bobbin pushed until the probe of the positioning pin with the concave Touch surface comes into contact. This is the on the positioning pin acting axial force so that it may be below Deformation along the tactile surface towards its lowest point is moved. A suitable evaluation device ensures that the lateral deflections of the positioning pin in control signals be converted to track the doffer mandrel, namely until the undeflected one returns to its resting position returned positioning pin the lowest point of the concave Has reached the opposite surface.

The positioning pin can be fixed in the face from which it is goes out, be anchored and flexible, so that when he touches can be deformed, or it can be anchored resiliently be and be deflected without deformation.

In a further embodiment, the touch device is a light source with parallel to the opposite winding spindle, not too narrowly bundled light beam, which at Alignment of the bobbin spindle mandrel axis with the axis of the bobbin spindle on a reflector device mounted on the end face of the winding spindle meets. This is preferably similar to a cat's eye formed such that in addition to the main beam Scattered cone is reflected with reduced light intensity. The Probe device has an evaluation circuit for the reflected Light on, which should also cover the edges of the scattering cone. The intensity of the reflected can preferably be determined by a detector Light can be evaluated in such a way that the starting point of the reflected light in x-y coordinates and the measured values corresponding to these in signals for tracking the Coil mandrel to be converted. These can be just like that Signals of the above-mentioned device via, for example guided through an axial bore in the mandrel insert Signal line of the machine control, especially the doffer control, be transmitted.

In a preferred embodiment, the touch device is one with a device for distance measurement equipped with a laser light source. The beam of the directed towards the front of the winding spindle Lasers meets a reflector device there Surface hit by the laser beam convex in the beam direction or is concave. Further details can also be found here from the description of the accompanying drawing.

Finally, in yet another embodiment of the invention the feeler between the mandrel or the mandrel insert and the face of the opposite winding spindle magnetic alternating field, on the head of the coil mandrel or mandrel insert or preferably the winding spindle of centrally installed electromagnet excited by alternating current. The associated Reflector device consists of several, in particular four, on the face of the opposite winding spindle or preferably the opposite coil mandrel symmetrical to their (its) axis arranged, short-circuited wire coils. An evaluation circuit for recording and evaluating the in The voltages induced in the wire coils provide those for tracking required control signals.

The frequency of the alternating current that excites the electromagnet should be chosen so that in the case of non-coinciding Axes of the winding spindle and the alternating field as far as possible complete coincidence of the axes clearly measurable differences of the alternating voltages induced in the individual coils surrender. Hence the frequency of the alternating current feeding the magnet preferably changeable, with frequencies between 10 Hz and 120 Hz, especially proven between 25 Hz and 90 Hz to have.

In the winding device, in which the tracking of the spool of the operator control by the machine control of the winding head is done, there is a sensor device in the winding turret integrated, the continuous detection of the rotor rotation and so that the changing winding spindle positions serves. Prefers becomes a magnetic field sensor device. Their magnet is with connected to the winding turret and rotates with it while the sensor element arranged in the magnetic field is stationary anchored and thus secured against turning.

In a preferred embodiment, the magnetic field sensor is in one circular cylindrical, cup-shaped recess in the turret used, which is coaxial to its axis of rotation and of its front with the winding spindles. The magnet, preferably a U-shaped permanent magnet, is in the Well attached so that the magnetic poles in the axial direction and parallel to the circular cylindrical wall of the recess extend. Starting from this recess is in the rotor shaft a continuous axial bore through which a support device is passed through for the sensor elements. This Support device can be, for example, a tubular support, which is guided through the rotor bore without contact and on the machine frame is anchored.

While a sensor element arranged as described below for tracking the idle spindle in the rotating area of the winding turret, in which the bobbin change is sufficient, can by supplementing it with a second one, by 90 ° compared to the first sensor element rotated about the rotor axis can be reached, that the spindle positions are tracked seamlessly over 360 ° can.

Each sensor element arranged in the field of the permanent magnet, for example a wafer made of a suitable semiconductor material like indium antimonide or indium arsenide, must be combined with one DC source and via supply lines and signal lines with a device for recording and evaluating the generated Hall voltage. According to the invention these lines through the tubular support means mentioned above for the sensor elements to a corresponding evaluation unit be performed. The evaluation unit can in turn via control lines with the control device of the doffer or whose drives are connected.

The magnetic field sensor is preferably aligned with the winding spindles in such a way that that the magnetic field lines of the revolving with the winding turret Magnets in the zero position of the turret, i.e. in the position with which when the work spindle is retracted in the starting position of a winding cycle corresponds to the position reached, run vertically in the room. When equipping the sensor device with a sensor element, this is in the mentioned Zero position of the winding turret with its longitudinal extension transverse to the field lines on the machine frame are secured against rotation anchored that the side surfaces facing the poles of the magnet then cut the field lines at an angle of 90 ° when the The axes of rotation of the two winding spindles lie vertically one above the other. However, it can be especially when only one sensor element is arranged be advantageous to the magnetic field sensor to the winding spindles Align so that the magnetic field lines with the turret revolving magnet in the mentioned zero position of the turret parallel to one laid through the spindle axes Level. The sensor element is accordingly on Machine frame with its longitudinal extension across the field lines to be secured against rotation in such a way that in the Reset the turret to the poles of the magnet facing side the plane mentioned through the spindle axes cut at an angle of 90 °. While the first described Arrangement especially when the sensor device is a second, opposite the first sensor element with the rotor axis sensor element rotated by an angle of 90 ° as axis of rotation for seamless tracking of the rotor rotation to 360 ° is suitable is in the arrangement described below with only one sensor element in particular the rotary movement of the Rest spindle in the entire turning range that can be used for changing bobbins to track the winding turret particularly well.

Using the exemplary embodiments shown in the accompanying drawing the invention is explained.

Fig. 1

die Frontansicht und

Fig. 2

die Seitenansicht einer mit einer ersten Ausführung der Erfindung ausgerüsteten Aufwickelvorrichtung;

Fig. 2A

ein vergrößertes Detail aus Fig. 2;

Fig. 3A

bis

Fig. 3B

eine weitere, auf mechanischer Basis wirksame Ausführung der Erfindung in Stirn- und Seitenansicht;

Fig. 4A

bis

Fig. 4B

eine auf dem Prinzip der Entfernungsmessung durch einen Laserstrahl beruhende Ausführungsform;

Fig. 5A

bis

Fig. 5B

eine Ausführung mit einem Elektromagnet als Tasteinrichtung und symmetrisch zur Spulspindelachse angeordneten, den Reflektor bildenden, jeweils in sich kurzgeschlossenen Spulen.

Fig. 6A

wie Fig. 5, jedoch mit den Reflektorspulen auf der Dornachse;
bis

Fig. 6C

eine Ausführung ähnlich Figuren 5 und 6, jedoch mit vier Elektromagneten.

Fig. 7

das Schema einer mit einem Magnetfeldsensor ausgestatteten Aufwickelvorrichtung in Vorderansicht;

Fig. 8A

die Seitenansicht der Aufwickelvorrichtung gem. Fig. 7
und

Fig. 8B

mit einem vor dieser in Stellung gebrachten Doffer;

Fig. 9

das Schema ähnlich Fig. 7, jedoch mit anders ausgerichtetem Magnetfeldsensor.

It shows

Fig. 1

the front view and

Fig. 2

the side view of a winding device equipped with a first embodiment of the invention;

Figure 2A

an enlarged detail of Fig. 2;

Figure 3A

to

Figure 3B

another, mechanically effective embodiment of the invention in front and side view;

Figure 4A

to

Figure 4B

an embodiment based on the principle of distance measurement by a laser beam;

Figure 5A

to

Figure 5B

an embodiment with an electromagnet as a probe and arranged symmetrically to the spindle axis, forming the reflector, each short-circuited coils.

Figure 6A

5, but with the reflector coils on the mandrel axis;
to

Figure 6C

an embodiment similar to Figures 5 and 6, but with four electromagnets.

Fig. 7

the diagram of a rewinder equipped with a magnetic field sensor in front view;

Figure 8A

the side view of the winder acc. Fig. 7
and

Figure 8B

with a doffer positioned in front of it;

Fig. 9

the scheme similar to Fig. 7, but with a differently oriented magnetic field sensor.

1 shows the view of an equipped according to the invention, in parts known from WO 93/17949 a winding turret 5 rotatable about its axis, rotor axis 42, which with two winding spindles not shown with direct drive 6, 7 is equipped and the rotary drive 20 by a Tracer roller 3 is controlled. The winding device is shown in its initial position 40 at the start of a new winding process. The full coil 10 sitting on the rest spindle 7 has the here change position within the change range 41 reached while the operating spindle equipped with an empty sleeve 8 6 in position 40 at the beginning of the winding process located. The rotary drive 20 of the turret 5 is a Stepper motor. It is controlled by a rotor control 19 which in turn transmit signals from a distance sensor 4 receives the from the growth of the winding on the operating spindle 6 dependent movements of the swing arm 2 registered and converted into switching signals.

The thread 1 tapering from above is of the at the free end of the Swing arm 2 rotatably fastened, lying on the empty sleeve 8 Tracer roller 3 deflected and runs onto the sleeve 8. As it progresses Formation of coils on the bobbin tube 8 becomes the sensing roller 3 and the swing arm 2 carrying it is lifted up through the Distance sensor 4 when the predetermined limit distance is reached Relay signal given to the turret control 19 and the Revolver 5 is rotated further.

To illustrate the rapid increase in the diameter of the Forming bobbin 10 when winding threads and yarns stronger titers, especially of carpet yarn, and thereby conditional further rotation of the coil 10 are in FIG Contact with the stylus roller 3 dash-dotted circles, which intermediate positions indicate during the winding formation, corresponding positions 12, 13, 14 of the coil 10 carrying Rest spindle 7 shown; when position 14 is reached the winding travel of the operating spindle 6 ended and by renewed Turning the turret 5 will automatically change the bobbin initiated.

Especially when winding up carpet yarn, those are indicated Positions reached relatively quickly in succession. Therefore it can compared to the prior art, the two fixed stopping positions provides that the distance should be shorter than the winding area, be useful to find other ways to achieve this the stopping positions and the availability of the doffer to bring them in time, especially when changing the spool both the mandrel 22 and the mandrel for attaching one Empty tube 8, 9 at the respective handover with the winding spindle 6; 7 have to align. In any case, the location of the Full bobbin 10 indicated by dash-dotted lines at the spindle position 12 Circle 12A shows the takeover when position 12 is reached the full coil 10 by the doffer 21 have already been made to the start of the full coil 10 against the limiting plate 15 or to prevent an existing side wall in the winding head division.

The invention avoids the difficulties outlined by as described, at the latest with the entry of the rest spindle 7 in the change region 41 whose relative position to the mandrel 22 of the Doffers 21 detected, the latter with the help of the invention Tracking device in alignment with the rest spindle 7 brought and guided so that he through the Winding process caused movements of the rest spindle 7 follows. The process of pushing the full spool 10 away from the rest spindle 7 generally takes place in the first stop position of the changing area 41, i.e. at the time when the full spool 10 in the 6 o'clock position is turned.

The generally from a probe 24; 27; 29; 33 and one with this cooperating reflector device 11; 25; 31; 34 Existing tracking device can be different according to the invention Have embodiments. As a reflector device here one with a mechanical, optical, electrical, electromagnetic or other signaling device cooperating, preferably passive device that designates the received signal reflected or sent back so that it is in an evaluation unit can be analyzed to control the doffer movements.

A preferred embodiment is shown in FIGS. 1 to 2A. With her is on the end faces of both winding spindles 6, 7 - for example in a centrally turned circular recess - each a reflector 11 is provided, while the associated push button from a rest spindle to be hoped for at the end 7 directed light source 27 and a suitable circuit 28 to evaluate the reflected light. The reflector is preferably designed similar to a cat's eye in such a way that next to the main beam, the intensity of which depends on the distance the spindle axis decreases rapidly, also a scattering cone with reduced Luminous intensity is reflected. With tubular design of the mandrel 22 and arrangement of a mandrel insert 23 according to 2A can be used in the circuit 28 depending on the intensity of the reflected light generated control signals an axial bore, which may also serve to supply energy 37 of the mandrel insert 23 arranged signal line 38 to the Doffer control (not shown) are passed on.

A mechanically effective version of the tracking device show Figures 3A and 3B. With her the touch device is on with a probe 24A to the winding spindle 7 pointing pin 24, which is flexible in itself and / or under the action of force laterally deflectable in the coil mandrel 22 or the mandrel insert 23 can be attached. The associated reflector device is a essentially covering the free end face of the rest spindle 7 Attachment 25A with a circular cylindrical outer jacket, of which free end face a centrally arranged to the cylinder envelope, the shape of a rotationally symmetrical to the spindle axis, preferably the shape of a spherical cap or a paraboloid Depression as a tactile surface 25. To track the Spool mandrel 22, the positioning pin 24 on the rest spindle 7 to be moved until it touches the touch surface 25 is coming. For example, by using the free length of the positioning pin 24 attacking detector 26 or by not shown to be anchored in the mandrel 22 or the Pin set 23 arranged pressure sensors can be by eccentric Contact with the touch surface 25 caused radial Deflections converted into control signals for doffer control become.

Another preferred embodiment of the tracking device according to the invention show Figures 4A and 4B. The touch device is one with a device 32 for distance measurement combined, directed to the front side of the rest spindle 7 Laser beam source 29, while a straight as a reflector device Cone 31 with a slightly below the winding spindle diameter lying circular diameter Base 39 serves. The cone tip is preferably rounded. After aligning the mandrel 22 so that the to the spindle axis parallel laser beam detects the cone 31, the Position of the mandrel 22 by appropriate, from the distance measuring device 32 signals given to the doffer control in Controlled to minimize distance. This results in, that the accuracy of tracking through the slenderness level of the cone 31 can be influenced.

Deviating from the form shown in the drawing, the Reflector device 31 also on the end face of the winding spindle intended recess, rotationally symmetrical to the spindle axis in the form of a straight hollow cone, a paraboloid or a spherical cap, which has a circular base with a slightly below the winding spindle diameter lying diameter. It is understood that the signals given to the doffer control in the sense of distance maximization have to work.

Regardless of the form chosen from the aforementioned a height of this reflector device is preferred, which is essentially between 0.6 times and 1.2 times theirs Base diameter is.

Another embodiment of the invention is shown in FIGS. 5A and 5B as well as 6A, 6B and 6C. With her, the feeler is a between the doffer mandrel 22 or the mandrel insert 23 and the end face of the opposite winding spindle 7 a periodically the direction alternating magnetic field 35, either at the head of the Dofferdorns 22 or the mandrel insert 23 or preferably - such shown - the winding spindle 6; 7 centrally installed, through an alternating current of selectable frequency excited electromagnet 33. The frequencies for energizing the electromagnet 33 can be preferred between 10 Hz and 120 Hz and in particular between 25 Hz and 90 Hz. The reflector device here consists of several on the end face opposite the electromagnet 33 of the doffer mandrel 22 or the winding spindle 7 - in FIGS. 5A, 5B the winding spindle, in FIGS. 6A, 6B of the mandrel 22 - short-circuited arranged symmetrically to their axis Wire spools 34A - 34D. The number of wire spools can rel. vary widely and for example between at least two, better three and six to eight coils. As well As shown, the symmetrical arrangement has been suitable of four wire coils 34A-34D arranged in two one above the other Rows proved, the distances between the rows and the coils in the rows are the same. The possibly, i.e. if the opposite ends of the winding spindle and winding mandrel deformations of the magnetic field caused by the effects of the different AC voltages generated in the coils are in both versions by a device 36 recorded and evaluated and - for example in the above described way - as control pulses for tracking to the Doffer control directed.

In both versions, the magnetic field 35 is passed through built a magnet. However, as in Fig. 6C shown, for example four parallel to each other and strict arranged symmetrically to the spindle or to the mandrel axis, Magnets 33 building identical magnetic fields, preferably bar magnets 33 may be provided, these also on the head of the Dofferdorns 22 or the mandrel insert 23 or the winding spindle 6; 7 can be arranged.

Control signals are generated by the respective evaluation circuit of the detector generated from which the relative position of the rest spindle 7 and Spool mandrel 22 of the doffer 21 is calculated and by the doffer control the linear drives for vertical and lateral movement of the mandrel 22 are driven until they are together align and on the one hand the full spools 10 on the spool 22 of the doffer 21 can be pushed off or on the other hand on a second mandrel parallel to the mandrel ready empty tubes 8 and 9 on the unloaded spindle can be postponed. This happens in a second Stop position of the turret 5 by the evaluation device of the doffer or by the machine control. Here the revolver 5 is not clocked for the duration of the operation and the rotary drive 19 briefly stopped.

FIG. 7 shows similar to FIG. 1 described previously in FIG schematic front view of a winding machine according to the invention for a continuously tapering thread 108, which a Has winding turret 102 and its structure is essentially Share with that described in the aforementioned WO 93/17949 Winding machine matches. The shown turret position corresponds to that up to now and furthermore with zero position designated position of the operating spindle 104, which this at Swinging into the winding position at the beginning of the winding trip reached. In this turret position it is on the rocker 112 tracer roller 107 as well as the tracer roller 113 traversing device actuated by the traversing drive 110 109 still raised by the swivel drive 118. It touches the Coil sleeve 106 not yet and the one not designated Sheet metal equipped lever 119 for threading and Disconnecting the new sleeve 106 from the full spool 122 is still in retracted his working position. Essentially immediately after the new wrapping process has started, the swivel lever 119 pivoted up and the traversing device 109 and the Tracer roller 107 lowered and the latter on the forming coil 122 put on. In connection with the previous versions for more details on the thread changing process referred to EP 374 536 B.

It must be here in particular with reference to FIGS. 8A and 8B it should be noted that when the rewinder is equipped with a tracer roller 107, usually the winding spindles 104, 105 differently than shown in Fig. 8A, with a direct drive are equipped. However, the invention is the same Way also applicable to winding devices where the Tracer roller 107 by a Drive roller 107 is replaced and the operating spindle 104 by the Driving roller 107 is driven on the circumference.

On the turret 102 provided with a rotary drive 103 are two winding spindles 104, 105 mounted and by turning the Spooling turret 102 into a winding area and into a changing area bringable. During the winding travel, the winding turret 102 from the rotary drive controlled by the feeler roller 107 as described 103 stepwise in direction of rotation 138, preferably in essentially continuously rotated. Doing so during during the winding process 107, following the increasing coil diameter, around the pivot axis 114 swung up until a preset limit between rocker 112 and measuring device 115 is reached and by a corresponding signal via a signal line 116 measuring device connected to a control device 117 115 the turret drive 103 switched on and the winding turret 102 is turned a short distance. This happens accordingly the diameter of the growing during the winding process Coil 122 in constant succession until coil 122 reaches its final diameter has reached. Then the sensing roller 107 is lifted off again and the winding turret 102 started until the new one Empty sleeve 106 moved into the zero position shown in FIG. 7 and the full spool 122 is ready to change the spool. Then, as soon as this happens, an automatic machine assigned to the machine (Doffer) 134 (see FIG. 8) is available, the bobbin changing process initiated.

As mentioned at the beginning, before the bobbin changing process in Gear can be set - the doffer 134 to the winding device be aligned to be able to hold the full spools 122 provided mandrel 135 exactly with the coil 122 supporting spindle 105 is aligned. In addition, the Spool mandrel 135 and the device, not shown, for attaching the empty tubes 106 when the turret 102 after the first stop position and pushing off the full spool (s), the moving wandering spindle 105 are tracked.

According to FIG. 7, it is provided that by a sensor device 123, in particular a magnetic field sensor device, the continuously changing position at least the Rest spindle 105 constantly detected and for guiding the spool 135 of a doffer 134 in the machine control becomes.

In the case of Figures 7 - the former is to be made visible the sensor device 123 from the full coil 122 a section cut out - and 8A illustrated embodiment of the invention is for receiving this sensor device 123 in the winding turret 102, starting from its bearing the winding spindles 104, 105 Face, a circular cylindrical cup-shaped depression 125 provided concentric to the turret axis. In addition, the Rotor shaft 137 has an axial bore 127. In the recess 125 the magnetic field sensor 123, 124 is used. The magnet 124, a horseshoe-shaped permanent magnet, is inside the recess 125 rotatably connected to the turret 102 so that it Rotational movements follow and rotate with it. His pole 124A, 124B are aligned in the axial direction and run parallel to the cup wall. 8A is through a separating layer 136 indicated that - depending on the turret material - the magnetic poles possibly have a distance from the cup wall or from this similarly used pot magnet by a suitable one Separating layer 136 are separated.

The sensor device provided in the field of the magnet 124 123 has at least one sensor element 123A. The sensor device must not rotate with the turret 102 and must therefore be secured against rotation. In the version shown For this purpose, a tubular one is guided through the rotor bore 127 Carrier 126 provided, at the front end of the sensor device 123 is attached. The rear end of the bracket 126 is rotationally fixed directly or indirectly with the machine frame 101 connected.

The sensor element (s) 123A, 123B must be in order to operate be supplied with a DC voltage, there are also possibilities for tapping and evaluating the sensor voltage (Hall voltage) to provide. According to the invention, the or everyone is Sensor 123A; 123B through signal lines 128 and supply lines 129 connected to an evaluation unit 117, while from the evaluation unit 117 control lines 133 to the control device 132 of the doffer 134 (see FIG. 8B).

As already mentioned, the magnetic field sensor 123, 124 can belong to the Spool spindles 104, 105 can be aligned differently. So can, as shown in Fig. 7, for example the sensor 123, 124 so be installed that the magnetic field lines with the revolver 102 revolving magnet 124 when the winding rotor 102 is in the zero position explained above is located vertically in Run space and accordingly the or one of the sensor elements 123A, 123B with its length across the field lines at Machine frame 101 anchored in such a manner secured against rotation is that its side surfaces facing the magnetic poles 124A, 124B then cut the field lines at an angle of 90 ° if the Axes of rotation of the two winding spindles (104, 105) as in FIG. 7 shown lying on top of each other.

Especially when the sensor device 123 with only one Sensor element 123A is equipped, however, that shown in Fig. 9 Preferred arrangement in which the magnetic field lines in each position of the turret 102 parallel to one through both winding spindle axes are on the same plane, hence the Sensor element 123A on the machine frame 101 with its linear expansion secured against rotation across the field lines is anchored that in the zero position of the turret 102 its to the plane going through the spindle axes rotated magnetic poles 124A, 124B side surfaces facing the field lines cut at an angle of 90 °.

Especially when the positions of the winding spindles 104, 105 According to the invention are preferred to be tracked over 360 ° two sensor elements 123A, 123B are provided, one of which (123A) is fixed in the manner described above and the second sensor element 123B compared to the first (123A) with the Rotor axis is rotated as an axis of rotation by an angle of 90 °.

It has been shown that if the above Influencing factors allow a mode of operation in which the drive of the Winding turret 102 can continue to run during the doffing process, this is preferred. On the other hand, for example Winding up very fine titers and / or at less high winding speeds the switching cycles of the rotary drive 103 for the winding turret 102 are further apart in time since the Construction of the coil is slower. In one by the invention allowed more precise positioning of doffers 134 at the beginning the bobbin change and, if necessary, the inclusion of the switching pulses In the control of the bobbin change leave the time intervals there is enough space between the switching operations for changing the bobbin with the winding turret drive 103 switched off.

Although in the previous description as a sensor device 123 a magnetic field sensor for detecting the angular position of the rest spindle and its structure and arrangement in the winding turret 102 has been shown, the invention is based on the specific implementation the measuring device is not limited. Rather, there are others Transducers can be used, in analog or digital form the temporal angle changes of the respective rest spindle 105 or both winding spindles 104, 105 continuously recorded and made available can be. For example, other known ones are also known Rotary angle encoder applicable or measuring devices that measure the switching impulses of the stepping motor for the rotary drive 103 of the winding turret Evaluate 102.

REFERENCE SIGN LISTING

1

thread

2nd

Probe lever, swing arm

3rd

Tracer roller, drive roller

4th

Distance sensor

5

Winding turret

6

Winding spindle, operating spindle

7

Winding spindle, idle spindle

8th

Sleeve, coil sleeve

9

Sleeve, coil sleeve

10th

Kitchen sink

11

Reflector, reflector device

12th

Intermediate spindle position

13

Intermediate spindle position

14

Change position

15

Boundary plate

16

Divider

17th

Envelope circle

18th

Machine frame

19th

Rotor control

20th

Rotor drive, rotary drive

21

Operator machine, doffer

22

Coil mandrel, mandrel sleeve

23

Mandrel insert

24th

Stylus, positioning pin

24A

Probe

25th

Touch surface, reflector device

25A

Essay

26

detector

27

Light source

28

Detector, evaluation circuit

29

Laser, laser beam source

30th

laser beam

31

Touch surface, reflector device

32

Evaluator

33

Electromagnet, bar magnet

34A

to

34D

Coil, reflector device

35

Magnetic field

36

Evaluator

37

Bore, axial bore

38

Signal line

39

Base area, cone base area

40

Starting position

41

Exchange area

42

Rotor axis, rotary axes

101

Machine frame, machine frame

102

Winding turret

103

Turret drive, rotary drive

104

Winding spindle, operating spindle

105

Winding spindle, idle spindle

106

Tube, coil tube, empty tube

107

Feeler roller; Drive roller

108

thread

109

Traversing gear, traversing device

110

Traverse drive

111

Guideline

112

Swingarm

113

Swingarm

114

Swivel axis

115

Measuring device

116

Signal line

117

Control device, evaluation unit

118

Swivel drive

119

Thread transfer device with divider, swivel lever

120

Fender

121

attack

122

Full coil, coil

123

Sensor device, magnetic field sensor

124

Magnet, permanent magnet

125

deepening

126

Sensor carrier, tube, carrier

127

Axial bore, rotor bore

128

Signal lines

129

Supply lines

130

Evaluation device

131

Supply unit

132

Doffer control

133

Control line

134

Doffer

135

Spool

136

Interface

137

Rotor shaft, journal

138

Direction of rotation

Claims (37)

1. Procedure to doff full packages and supply empty tubes in change, at a winding machine for a continuously supplied manmade fiber during which the full packages and the empty tubes sit on two winding chucks of a winding turret to be turned by this winding turret into the winding area for being wound and into a transfer area where the full packages are to be transferred and empty tubes are to be supplied in change and during which at least one full package in the transfer area is to be pushed off the winding chuck onto a doffer's package receiver and then the doffer pushes at least one empty tube onto the empty winding chuck,
   characterized in that

   pushing off the full package(s) and pushing on the empty tube(s) takes place at any position within the transfer area to be set by the machine control system with the doff depending on the availability of the doffer guided by the machine control system along the winding machine,

   by continuously detecting the change in position of at least one winding chuck by means of a sensor and by following with the package receivers of the doffer the winding chucks to be doffed so as to reach an alignment of their axes in push-off and push-on position.
2. Procedure according to claim 1
   characterized in that

   the transfer area is to be determined in dependence on the yarn titer to be processed, on the winding speed intended, on the dimensions of the individual winders, on the packages produced, as well as on the winders' modular spacings.
3. Procedure according to claim 2
   characterized in that

   the beginning of the transfer area is to be located at a position within the winding turret cycle that is at a swing angle of 180° away from the turret position at the beginning of winding.
4. Procedure according to claim 3
   characterized in that

   the transfer area is fixed to a swing angle of the winding turret of at least 15° and not exceeding 75°.
5. Procedure according to claims 1 to 4
   characterized in that

   the changing position of the winding chuck to be doffed is to be detected continuously.
6. Procedure according to claims 1 to 5
   characterized in that

   at the moment when the winding chuck enters the transfer area, the doffing devices of the doffer follow the winding chuck with a precise alignment.
7. Procedure according to claim 6
   characterized in that

   the doffer or its doffing devices, respectively, follow the winding chuck depending on the control signals of the corresponding winder transmitted to the machine control system.
8. Procedure according to claim 6
   characterized in that

   the doffer or its doffing devices, respectively, follow the winding chuck depending on the control signals of the doffer transmitted to the machine control system.
9. Procedure according to claims 1 to 8
   characterized in that

   there will not be any step into the rotating drive of the winding turret during transfer and when pushing empty tube(s) onto the empty winding chuck.
10. Procedure according to claim 7
    characterized in that

    the position of the winding chuck to be doffed (inoperative chuck) and its changing position is continuously detected and made available by the machine control system.
11. Procedure according to claim 10
    characterized in that

    the position data of the inoperative chuck made available are used to position and guide the doffer and the empty tube push-on device of the doffer.
12. Winding unit for continuously supplied threadlines (1, 108) including a winding turret (5, 102) upon which two winding chucks are located (6, 7, 104, 105) that are positioned in the winding area and in the transfer area in turns by turning the winding turret around its rotation axis (42) with the winding turret (5, 102) still being turned according to the increasing package diameter during the winding cycle by a rotating drive (20, 103) controlled by the deflection particularly of a pressure roll (3, 107) located at a swivel mechanism, including a device to push off full packages (10, 122) during a doff, as well as including a doffer (21, 134) with at least one package receiver (22, 135) designed to carry out the procedure according to one of the claims 1 to 11
    characterized in that

    the winding turret (5, 102) or/and the winding chucks (6, 7, 104, 105), as well as the doffer (21, 134) provide cooperating devices that influence the machine control system, and which are designed to follow the winding chuck to be doffed (6, 7, 104, 105) with the at least one package receiver (22, 135) of the doffer (21, 134) and to hold it in the axial projection of the winding chuck.
13. Winding unit according to claim 12
    characterized in that

    every follow-up device is composed of a sensor device (24, 27, 29, 33) and of a cooperating reflector unit (11, 25, 31, 34) with the sensor device (24, 27, 29, 33) or the reflector unit (11, 25, 31, 34), respectively, located on the winder particularly on the protruding heads of the winding chucks (6, 7) of the winder, and the reflector unit (11, 25, 31, 34) or the sensor device (24, 27, 29, 33), respectively, located at the head of the package receiver (22) of the doffer (21).
14. Winding unit according to claim 13
    characterized in that

    the sensor device (24, 27, 29, 33) is located at the head of the package receiver (22) and the reflector unit (11, 25, 31, 34) cooperating with the sensor device (24, 27, 29, 33) is located on the front of each winding chuck (6, 7) pointing toward the doffer (21).
15. Winding unit according to claim 14
    characterized in that

    the package receiver (22) is designed as supporting tube containing in its front, which points toward the winding chuck (7, 6), an axially movable arbor insert (23) carrying the sensor device (24, 27, 29, 33).
16. Winding unit according to claim 15
    characterized in that

    the sensor device (24, 27, 29, 33) is connected to the doffer control system via a signal line (38) installed through an axial bore hole (37) of the arbor insert (23).
17. Winding unit according to one of the claims 14 to 16
    characterized in that

    the sensor device is composed of a positioning pin (24) ending in a tip (24A) pointing toward the winding chuck (7, 6) and

    the reflector unit (25) is designed as a top (25A) with outer jacket in the form of a regular cylinder covering nearly the entire free front surface of the winding chuck (7, 6) and with an indentation as sensor surface (25) beginning on its free front surface and centered to the cylinder jacket showing the form of a concave universal ball joint or a paraboloid.
18. Winding unit according to claim 17
    characterized in that

    the positioning pin (24) is flexible or/and is installed, under force effected radially, in the package receiver (22) or the arbor insert (23) so as to be radially deflectable.
19. Winding unit according to claim 14
    characterized in that

    the sensor device is a luminescent source (27) with the light beam (27A) aligned in parallel to the opposite winding chuck (7, 6),

    and that the reflector unit is designed similar to a rear reflector (11).
20. Winding unit according to claim 19
    characterized in that

    the reflector unit (11) is not only used to reflect the principal beam but also a dispersion cone with less luminous intensity.
21. Winding unit according to claim 19 or 20
    characterized in that

    he sensor device (27) has an evaluating circuit (28) for the reflected light, connected by a signal line (38) to the control system of the doffer (21).
22. Winding unit according to one of the claims 19 up to 21
    characterized in that

    the sensor device (27) has a circuit (28) designed to localize the starting point of the reflected light in x-y-coordinates and connected by a signal line (38) to the machine control system, particularly to the control system of the doffer (21).
23. Winding unit according to claim 14
    characterized in that

    the sensor device is a laser light source (29) combined with a distance measuring device (32), pointing toward the front part of the winding chuck (7, 6), cooperating with a reflector unit (31) where the surface reached by the laser beam (30) is dished or cambered in beam direction.
24. Winding unit according to claim 23
    characterized in that

    the reflector unit is a straight cone (31) with a round cone point and circular basis (39) showing a diameter slightly smaller than the winding chuck's diameter.
25. Winding unit according to claim 23
    characterized in that

    the reflector unit (31) is an indentation on the front part of the winding chuck (6, 7) showing the form of a straight hollow cone, a paraboloid, or a universal ball joint of a diameter slightly smaller than the winding chuck's diameter.
26. Winding unit according to one of the claims 12 to 14
    characterized in that

    the sensor device is a solenoid (33) energized by alternating current, centered over the head of the package receiver (22) or the arbor insert (23), respectively, or the winding chuck (7, 6), creating a magnetic alternating field (35) between the package receiver (22) or the arbor insert (23), respectively, and the front part of the opposite winding chuck (7, 6);

    that the reflector device is composed of several short-circuited wire coils (34), particularly four of them arranged on the front part of the opposite winding chuck (7, 6) or the opposite package receiver (22), respectively, arranged symmetrically to its axis; and that a device (36) designed to detect and analyze the voltages induced in the wire coils (34), is provided.
27. Winding unit according to claim 26
    characterized in that

    the frequency of the alternating current supplied to the solenoid (33) can be changed.
28. Winding unit according to claim 12

    particularly to execute the procedure according to the claims 7 and 10 to 11
    characterized in that

    a sensor unit (123, 124) designed for a continuous detection of the inoperative chuck's (105) position is implemented into the winding turret (102).
29. Winding unit according to claim 28
    characterized in that

    the sensor device is a magnetic field sensor device (123, 124) with its solenoid (124) fixed to the winding turret (102) resisting any own rotation and turning with it whereas the sensor element(s) (123A; 123A, 123B) provided in the magnetic field is/are permanently anchored at the machine frame (101) and secured against being also rotated.
30. Winding unit according to claim 29
    characterized in that

    the magnetic field sensor (123, 124) is located in a circular cylindrical cupular indentation (125) provided in the winding turret (102) coaxially to the rotation axis of the winding turret (102) and beginning at the front part supporting the winding chucks (104, 105);

    that the solenoid (124) is fixed in the indentation (125) so that the magnet poles (124A, 124B) are arranged in direction of the axis and parallel to the circular cylindrical indentation side (125);

    and that an axial rotor bore hole (127) begins at the indentation (125) used to anchor the sensor elements (123) through those bore holes at the machine frame (101).
31. Winding unit according to claim 29 or 30
    characterized in that

    the sensor elements (123A, 123B) are attached on the chuck-side end of a tubular support (126) that is installed in the rotor bore hole (127) without any contact and anchored at the machine frame (101) resisting any rotation.
32. Winding unit according to one of the claims 29 to 31
    characterized in that

    the/every sensor (123A, 123B) is connected by signal lines (128) and supply lines (129) to an evaluation unit (117);

    and that control lines (133) are installed from the evaluation unit (117) to the control unit (132) of the doffer (134).
33. Winding unit according to one of the claims 29 to 32
    characterized in that

    the magnetic field sensor (123, 124) to the winding chucks (104, 105) is aligned so that the magnetic lines of force of the solenoid (124) rotating with the winding turret (102) when the winding turret (102) is in zero position corresponding to the position reached when retracting the operative chuck (104, 105) into the starting position of a winding cycle, are aligned vertically in space (fig. 7).
34. Winding unit according to claim 33
    characterized in that

    the sensor unit (123) is equipped with a sensor element (123A) that in zero position of the winding turret (102) corresponding to the position reached when retracting the operative chuck (104, 105) into the starting position of a winding cycle, is secured against rotation by its longitudinal extension crosswise to the lines of force at the machine frame (102) so that the side surfaces pointing to the poles (124A, 124B) of the solenoid cross the lines of forces at an angle of 90°.
35. Winding unit according to one of the claims 29 to 32
    characterized in that

    the magnetic field sensor (123, 124) is aligned to the winding chucks (104, 105) so that the magnetic lines of force of the solenoid (124) rotating with the winding turret (102) are aligned parallel to a plane through the winding chuck axes, in zero position of the winding turret (102) corresponding to the position reached when retracting the operative chuck (104, 105) into the starting position of a winding cycle (fig. 9).
36. Winding unit according to claim 35
    characterized in that

    the sensor unit (123) is equipped with a sensor element (123A) with the sensor element (123A) being anchored at the machine frame (101) with its longitudinal extension crosswise to the lines of forces locked against rotation so that the side surfaces pointing toward the poles (124A, 124B) of the solenoid (124) cross the lines of forces at an angle of 90° in zero position of the winding turret (102) corresponding to the position reached when retracting the operative chuck (104, 105) into the starting position of a winding cycle.
37. Winding unit according to one of the claims 29 to 36
    characterized in that

    the sensor unit (123, 124) provides a second sensor element (123B) opposite to the first sensor element (123A) with the rotor axis as rotation axis and turned by an angle of 90°.

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