EP0329947B1 - Method and apparatus for winding cross-wound packages - Google Patents

Method and apparatus for winding cross-wound packages Download PDF

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Publication number
EP0329947B1
EP0329947B1 EP89101015A EP89101015A EP0329947B1 EP 0329947 B1 EP0329947 B1 EP 0329947B1 EP 89101015 A EP89101015 A EP 89101015A EP 89101015 A EP89101015 A EP 89101015A EP 0329947 B1 EP0329947 B1 EP 0329947B1
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EP
European Patent Office
Prior art keywords
bobbin
empty tube
thread
outer diameter
velocity
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
EP89101015A
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German (de)
French (fr)
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EP0329947A1 (en
Inventor
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
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Publication of EP0329947A1 publication Critical patent/EP0329947A1/en
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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
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/28—Traversing devices; Package-shaping arrangements
    • B65H54/34—Traversing devices; Package-shaping arrangements for laying subsidiary winding, e.g. transfer tails
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H54/00—Winding, coiling, or depositing filamentary material
    • B65H54/02—Winding and traversing material on to reels, bobbins, tubes, or like package cores or formers
    • B65H54/40—Arrangements for rotating packages
    • B65H54/42—Arrangements for rotating packages in which the package, core, or former is rotated by frictional contact of its periphery with a driving surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/08—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle
    • B65H63/082—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to delivery of a measured length of material, completion of winding of a package, or filling of a receptacle responsive to a predetermined size or diameter of the package
    • 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 invention relates to a method according to the preamble of claim 1 and an apparatus for performing the method.
  • a centering spindle is used during piecing, which shifts the thread fed with the aid of take-off rollers to the end of the bobbin with the larger diameter, the bobbin being driven by means of an auxiliary drive roller during piecing . Since there is a clear difference between the circumferential speed at each end of the coil and the circumferential speed in the middle of the coil where the coil or empty sleeve is driven, mainly because of the taper of the coil or empty tube, the drive speed of the coil or empty tube when spinning is used in practice reduced by an average of 2%. It is assumed that the thread is wound on the end of the empty tube with the larger diameter.
  • a buffer is provided for the thread, which compensates for speed differences, the size of the stored thread length being controlled by driving the bobbin or empty tube with changing speeds.
  • DE-OS 2,458,853 it is proposed to use a plurality of axially distributed rollers for driving, which are successively driven synchronously with the movement of the oscillating thread guide, in order to wind up the thread with essentially constant tension.
  • the invention has for its object to provide a method and an apparatus to exclude thread breaks or irregularities that could occur due to differences in speed between thread delivery and thread winding during winding in connection with piecing.
  • the determined actual outside diameter of the bobbin is the size from which, assuming the conicity of the bobbin is known, it is possible to infer exactly the differences in the peripheral speed between the longitudinal center of the bobbin and the ends of the bobbin when the bobbin is changed or pieced.
  • This actual outside diameter can be determined at the large or small diameter or in the middle between the two coil ends. Because the drive speed of the bobbin is changed in relation to the working speed in strict dependence on the determined actual outside diameter, the thread arriving at the specified delivery speed runs onto the bobbin correctly, so that thread breaks due to the large thread tension on the one hand and unevenness in the winding pattern due to too little On the other hand, thread tension can be reliably avoided. It is advantageous that the thread is wound unchanged at the respectively set delivery speed when changing bobbins or piecing, so that the spinning process does not necessarily have to be interrupted or reversed.
  • the procedure according to claim 2 is expedient because the throttling of the drive speed relative to the working speed as a function of the actual outside diameter of the coil corresponds exactly to the actual circumstances, which leads to a substantially improved winding quality compared to the known method with a general reduction in the drive speed.
  • the change in the drive speed which is strictly dependent on the determined actual outside diameter of the bobbin or empty tube, enables piecing at high thread speeds.
  • the mean actual outside diameter is the value that is easiest to determine in terms of process and device. From the value of the average actual outside diameter, it is possible to draw precise conclusions about the speed differences that result over the coil length between the coil ends. Data transmission is a low-error, sufficiently fast and extremely precise method that is particularly suitable for this problem.
  • the evaluation and conversion of the determined values into the change in the drive speed is carried out in the usual way by means of one or more microprocessors.
  • a further, expedient variant of the method in which the spool held by the spool support arms is pivoted from the working position into a fixed spool release position for spinning is disclosed in claim 5.
  • the actual outside diameter can be deduced exactly from the extent of the pivoting or the duration of the pivoting movement of the coil support arms from the working position into the coil release position, wherein advantageously necessary components are used anyway for the operation of the device.
  • a further, expedient variant of the method, in which an auxiliary drive roller can be moved from a passive position in contact with the circumference of the coil or empty sleeve for piecing, can be seen from claim 5.
  • the extent or the duration of the movement of the auxiliary drive roller between the defined passive position and its abutment on the circumference of the spool or empty tube also allows an exact conclusion to be drawn about the actual outside diameter of the spool or empty tube.
  • a device according to claim 9 is particularly suitable for carrying out the method, in which sensors or light barriers are actuated in succession via the growing outside diameter of the coil, so that they are able to tell the control unit the actual outside diameter exactly.
  • sensors or light barriers are reliable and space-saving.
  • Another embodiment of the device which has a bobbin and the bobbin, pivotable bobbin support arms, which can be pivoted to a degree dependent on the actual outside diameter of the bobbin in a bobbin release position when spinning, claims 10 and 11.
  • components contained in the device are used here anyway to determine the actual outside diameter. To determine the actual outside diameter, it is not necessary to intervene in the immediate range of movement of the coil, but the actual outside diameter is tapped exactly at a point distant from the coil.
  • an embodiment of the device has proven useful, as can be gathered from claim 12.
  • a potentiometer or a timer circuit are reliable components that are not susceptible to contamination and that are compact and generate usable signals.
  • a further, alternative embodiment of the device in which an auxiliary drive roller which can be pivoted between a fixed passive position and a drive position which is dependent on the actual outer diameter of the coil, is provided for driving the coil during piecing, the auxiliary drive roller being connected to a drive device controlled by the control unit stands out from claim 13.
  • the measuring device is used away from the movement range of the coil in order to determine the respective actual outside diameter via a component which is anyway necessary for the function of the device and to transmit this to the control unit.
  • the embodiment of the device according to claim 14 is also expedient, in which a control unit is provided which is connected to the take-off rollers supplying the thread and to a drive device for the bobbin and contains a computing element which continuously determines and stores the thread spinning length. Since the control unit is informed about the thread spinning length anyway as usual, it no longer means any significant additional effort to expand the computing element in such a way that that it determines the actual outside diameter of the bobbin during piecing with predetermined and stored values over the thread spinning length and enables the control unit to control the speed change required for this for the drive device.
  • a conical coil 6 (FIG. 2) or empty sleeve 7 is driven in its longitudinal center M (FIG. 1) by means of a drive roller 9 via its outer diameter D in the middle length range at a predetermined working speed
  • the peripheral speeds differ near the two coil ends e and E due to the outer diameters D2 and Dl differing there from the mean outer diameter D considerably from the working speed.
  • the graph according to FIG. 4 illustrates in curve form these speed differences ⁇ V (e, E), for example for a coil with a conicity of 2 ° and a coil with a conicity of 4 ° 20 '.
  • the average outer diameter D is plotted on the horizontal axis, while the speed change is given in percent on the vertical axis.
  • the vertical axis reflects the positive and negative speed changes ⁇ V (e, E), which are located between the outer diameter D and the outer diameters D1 and D2 at the two ends e and E of the coil 6 surrender.
  • the values for the speed changes ⁇ V (e, E) to be taken into account are determined empirically for different conicity and fiber materials. For example, in the case of a coil 6 with a taper of 2 °, there is a change in speed of approximately + 5%, while the change in speed in the case of a 4 ° 20 ′ coil, for example in the case of an empty coil sleeve 7, is more than + 10%.
  • the diagram according to FIG. 4 also clearly shows that these speed differences gradually decrease with increasing average outer diameter D.
  • the diagram thus clearly shows that when the bobbin tube is empty after a bobbin change and when the usual thread reserve F R (FIG. 1) is formed at the end E of the bobbin 6 with the larger diameter D1, the thread supplied is up to 15% too quickly is wound up, which causes an increase in the thread tension which may lead to a thread break, although the empty tube 7 is driven in its middle length range at the thread delivery speed.
  • the peripheral speed of the empty tube 7 or the bobbin 6 in the run-up region of the thread F will no longer be sufficient to maintain the basically predetermined thread tension , so that the thread 5 loosens and generates an uneven winding pattern.
  • the drive speed of the empty tube 7 or the bobbin 6 is changed in relation to the working speed during a piecing process, ie raised or lowered, in order to ensure a uniform pick-up of the thread arriving at a fixed delivery speed.
  • the peripheral speed of the empty sleeve 7 or the coil 6 is in strict dependence on the actual outer diameter D, Dl or D2 of the empty sleeve 7 or the coil 6 (see curves of FIG. 4) and depending on the respective taper of the coil 6 changed.
  • the actual outside diameter must be determined.
  • the thread F comes from a spinning element designed, for example, as an OE rotor 2. It runs between take-off rollers 3, which are connected to a drive device 4 and determine the delivery speed of the thread F.
  • the empty sleeve 7 or the coil 6 is rotatably held in the usual manner by coil support arms 5, expediently with the aid of coil plates 8 and 8a.
  • a drive roller 9 engages on its outer circumference on the average actual diameter D, which drive roller can be the main drive for winding or also an auxiliary drive, and which is in motion-transmitting connection with a drive device 10.
  • a centering spindle 11 is used for a piecing process in connection with a bobbin change or also for thread breakage elimination.
  • the centering spindle 11 is connected to a drive device l2 and has a part of small diameter that runs out with a discharge end l3.
  • the centering spindle 11 is provided with opposite threads ll0, llll on its surface and with a central centering groove ll2, so that centering of the thread F is just as possible as a forced movement of the thread F towards the smaller end e or in the direction to the larger end E of the bobbin 6.
  • an alternating thread guide 14 is also provided, which is moved back and forth in the longitudinal direction of the bobbin 6 and guides the thread F.
  • the thread guide 14 is not used during piecing.
  • control unit designated by l5 which controls the individual components of the spinning station 1.
  • the control unit has, for example, an input part 16 and a computing element 40 (for example a microprocessor) with memories 42 and 43.
  • the drive device 10 for the coil 6 is connected to the control unit 15 via a control line 17, while the drive devices 12 and 4 for the centering spindle 11 or the take-off rollers 3 are connected to the control unit l5 via the control lines or signal lines l8 and l9.
  • the drive device l0 when driving the thread guide l4 in a cross winding manner, the drive device l0 is driven at a working speed which results from the delivery speed of the take-off rollers 3.
  • the speed changes which then occur when the thread F runs between the longitudinal center M and the two ends e and E of the bobbin 6 are compensated either by compensating means for the thread tension (not shown) or by correspondingly controlling the movement of the thread guide 14.
  • the drive speed of the drive device 10 and thus the drive roller 9 is changed relative to the working speed as a function of the actual outer diameter of the bobbin 6 in such a way that the peripheral speed of the bobbin 6 in the run-up region of the thread F corresponds to the delivery speed.
  • the run-up area of the thread F is understood to be the area of the empty tube 7 or the bobbin 6, onto which the thread F runs when spinning, ie when the thread reserve F R indicated in FIG. 1 is formed.
  • a change in the drive speed is possible in that in the control unit l5 in the computing element 40, which is preprogrammed with corresponding data about the conicity of the bobbin 6 and various actual outside diameter values corresponding to predetermined thread spinning length values, for example by monitoring the number of the revolutions of the take-off rollers 3, the thread spinning length is continuously determined and stored, so that the computing element 40 can infer the actual outer diameter D, D1 or D2 of the bobbin 6 from the respective thread spinning length. Furthermore, the arithmetic element 40 is preprogrammed in accordance with one of the curves in FIG.
  • the actual outside diameter is then determined via the actual thread spinning length and the necessary change in the drive speed of the drive device 10 is then determined via the actual outside diameter.
  • the thread spinning length is still zero, so that the computing element 40 determines the maximum change (see FIG. 4) of the drive speed with a known bobbin size and taper.
  • the computing element 40 determines the respective actual outside diameter, expediently the mean actual outside diameter D of the bobbin 6, and thus calculates the extent of the speed change for the drive device 10, which is necessary, for example, for a piecing process.
  • Appropriate programming can also take into account a different increase in the bobbin diameter when processing different thread material.
  • the computing element 40 is deactivated, whereupon the control unit 15 drives the drive device 10 again at the working speed predetermined by the take-off rollers 3.
  • the thread F runs between the take-off rollers 3 and is deflected on a deflection roller 3 ', which can also be a compensating device, in order then to be wound up over the winding roller 9a onto the empty tube 7 or onto the bobbin 6 indicated in broken lines.
  • the thread guide l4 takes over the changing function during the normal cross winding process.
  • the winding roller 9a is connected to a drive device 10a which is connected to the control unit 15 via a control line 17a.
  • the empty sleeve 7 or the coil 6 is carried by the coil support arms 5, which are held in a pivot bearing 20 in a stationary but pivotable manner.
  • a separating element 43 can be inserted between the winding roller 9a and the bobbin 6, which suddenly interrupts the drive of the bobbin 6 by the main drive roller 9a.
  • a swivel bracket 2l is provided for an auxiliary drive roller 9b, which is connected to a drive l0b which is connected to the control unit l5 via a control line l7b.
  • the swivel bracket 2l is provided with a movement device, not shown, with which the auxiliary drive roller 9b can be placed against the circumference of the coil 6 from a passive position defined by a stop 22, a spring 23 ensuring contact pressure of the auxiliary drive roller 9b.
  • the swivel bracket 2l is in a stationary swivel bearing 24, e.g. in a maintenance device 4l, which can be moved back and forth in front of the spinning positions of a spinning device and can be placed in front of the respective spinning station for a bobbin change or for piecing.
  • a button 25 is attached, which cooperates with a potentiometer or a timing circuit, which forms a measuring device 26 with which the extent and / or the duration of the (uniform) movement of the swivel bracket 2l from the passive position at the stop 22 to System on the circumference of the coil 6 can be determined and converted into a control signal. Since the auxiliary drive roller 9b reaches the circumference of the spool 6 the sooner the larger the actual outside diameter D of the spool 6, the extent of the movement of the swivel mount 2l or the duration of this movement is a measure of the actual outside diameter D.
  • the measuring device 26 is connected via connection lines 27 to an interface 35 and via this via a control line 34 to the control unit 15.
  • the auxiliary drive roller 9b is only used during a piecing process, while the winding roller 9a is not in drive connection with the bobbin 6 or empty tube 7, the actual outer diameter can be obtained in this way D simply determine the coil 6 or the empty sleeve 7, so that the control unit 15 is able to control the drive speed of the drive device 10b accordingly.
  • a support device 28 is also provided for the bobbin support arms 5, which is also used when changing the bobbin or during a piecing process.
  • the support device 28 has a support fork 29 which normally assumes its end position on a stop 30. It is pivotable about a pivot bearing 3l and is acted upon by a movement drive, not shown, in order to raise the bobbin support arms 5 when changing bobbins or when piecing, so that the bobbin 6 no longer cooperates with the bobbin roller 9a, but with the auxiliary drive roller 9b.
  • the support device 28 is only moved so far that the coil circumference is at a predetermined distance from the winding roller 9a.
  • the extent of the pivoting movement of the support device 28 varies depending on the actual outside diameter of the coil 6, the extent of the pivoting movement can be used to determine the actual outside diameter D of the coil 6.
  • the spool support arms 5 are pivoted by the same swivel path as a function of the respective actual outer diameter D of the spool 6 in order to remove the spool circumference by a predetermined amount from the spooling roller 9a, but the position of the swivel range changes so that this different swivel range position can be used to determine the actual outside diameter D of the coil 6 or the empty sleeve 7.
  • the time period for this pivoting movement can be used to determine the mean actual outer diameter D of the empty tube 7 or the spool 6.
  • an extending pointer 32 is attached to the fork 29, which can be moved and moved along a potentiometer or a timing circuit 36
  • Lines 33 is able to output signals to the interface 35, which represent the respective actual outside diameter D and which enable the control unit 15 to control the drive device 10b accordingly, ie to reduce or increase the drive speed compared to the delivery speed of the thread F.
  • the support device 28 is also contained in the maintenance unit 4l, so that the maintenance unit 4l is used to transmit the actual outside diameter D of all the spinning stations provided to the control unit l5 when a piecing operation is due there, which is expediently the central control unit of the spinning device.
  • a thread suction device 37 as well as a pivotable suction pipe 38 and other means, not shown, which are required for piecing and / or changing the bobbin.
  • these means have nothing to do with the speed control during piecing or when changing the bobbin, so that for the sake of simplicity reference is made to DE-OS 3.123.494, which provides clearer information on this.
  • FIG. 3 illustrates a detailed variant for determining the actual outer diameter D of the coil 6 or the empty sleeve 7.
  • optoelectronic or other contactless sensors or light barriers which are movable with the coil support arms 5 or are fixed relative to the axis of the coil 6 are shown Ll to L4 provided in a row arrangement such that the coil 6 with increasing actual outer diameter D covers an increasing number of light barriers Ll to L4, which are in signal-transmitting connection via control lines 39 with the control unit l5 and the actual outer diameter D of the coil 6 provide representative signals from which the control unit l5 can make the change in the drive speed of the coil 6 during piecing in the aforementioned manner.
  • the light barriers L1 to L4 are expediently assigned to the mean outer diameter D of the coil 6. However, it would also be conceivable to scan the small or large actual outer diameter D1 or D2 of the coil 6 at one or the other end e or E.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Winding Filamentary Materials (AREA)
  • Tension Adjustment In Filamentary Materials (AREA)

Description

Die Erfindung betrifft ein Verfahren gemäß Oberbegriff des Anspruchs l sowie eine Vorrichtung zur Durchführung des Verfahrens.The invention relates to a method according to the preamble of claim 1 and an apparatus for performing the method.

Bei einem aus der DE-OS 3.l23.494 bekannten Verfahren wird beim Anspinnen eine Zentrierspindel benutzt, die den mit Hilfe von Abzugswalzen zugeführten Faden zu dem Ende der Spule mit dem größeren Durchmesser verlagert, wobei die Spule beim Anspinnen mittels einer Hilfsantriebsrolle angetrieben wird. Da sich vor allem wegen der Konizität der Spule oder Leerhülse ein deutlicher Unterschied zwischen der Umfangsgeschwindigkeit an jedem Spulenende und der Umfangsgeschwindigkeit in der Spulenlängsmitte ergibt, wo die Spule bzw. Leerhülse angetrieben wird, wird in der Praxis die Antriebsgeschwindigkeit der Spule bzw. Leerhülse beim Anspinnen um durchschnittlich 2 % abgesenkt. Dabei wird davon ausgegangen, daß der Faden an dem Ende der Leerhülse mit dem größeren Durchmesser aufgewickelt wird. Diese generelle Absenkung der Spulenantreibsgeschwindigkeit entspricht aber nicht den tatsächlich auftretenden Geschwindigkeitsunterschieden, so daß nach wie vor Fadenbrüche oder eine grobe Behandlung des Fadens auftreten. Das gleiche gilt für eine solche Anspinnphase, bei welcher der Faden gegegebenenfalls auch an dem Ende der Spule bzw. Leerhülse mit dem kleineren Durchmesser aufgewickelt werden kann, wo dann die Umfangsgeschwindigkeit für eine einwandfreie Fadenaufnahme zu gering ist.In a method known from DE-OS 3.123.494, a centering spindle is used during piecing, which shifts the thread fed with the aid of take-off rollers to the end of the bobbin with the larger diameter, the bobbin being driven by means of an auxiliary drive roller during piecing . Since there is a clear difference between the circumferential speed at each end of the coil and the circumferential speed in the middle of the coil where the coil or empty sleeve is driven, mainly because of the taper of the coil or empty tube, the drive speed of the coil or empty tube when spinning is used in practice reduced by an average of 2%. It is assumed that the thread is wound on the end of the empty tube with the larger diameter. However, this general lowering of the bobbin driving speed does not correspond to the speed differences actually occurring, so that thread breaks or rough treatment of the thread still occur. The same applies to such a piecing phase, in which the thread can optionally also be wound at the end of the bobbin or empty tube with the smaller diameter, where the peripheral speed is then too low for a perfect thread take-up.

Gemäß der DE-OS 2.242.l5l wird ein Zwischenspeicher für den Faden vorgesehen, der Geschwindigkeitsunterschiede kompensiert, wobei durch Antreiben der Spule bzw. Leerhülse mit wechselnden Geschwindigkeiten die Größe der gespeicherten Fadenlänge kontrolliert wird.According to DE-OS 2.242.l5l, a buffer is provided for the thread, which compensates for speed differences, the size of the stored thread length being controlled by driving the bobbin or empty tube with changing speeds.

In der DE-OS 2.458.853 wird vorgeschlagen, mehrere axial über die Spulenlänge verteilte Rollen zum Antreiben zu benutzen, die synchron mit der Bewegung des changierenden Fadenführers nacheinander angetrieben werden, um den Faden mit im wesentlichen gleichbleibender Spannung aufzuwickeln.In DE-OS 2,458,853 it is proposed to use a plurality of axially distributed rollers for driving, which are successively driven synchronously with the movement of the oscillating thread guide, in order to wind up the thread with essentially constant tension.

Die vorerwähnte Verfahren tragen jedoch nicht den tatsächlichen Verhältnissen Rechnung, die sich bei unterschiedlichen Konizitäten der Spulen und verschiedenen Spulenaußendurchmessern beim Anspinnen ergeben.However, the above-mentioned methods do not take into account the actual conditions which result from different conicity of the bobbins and different bobbin outer diameters during piecing.

Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren und eine Vorrichtung zu schaffen, um Fadenbrüche oder Ungleichmäßigkeiten, die aufgrund von Geschwindigkeitsunterschieden zwischen Fadenlieferung und Fadenaufwindung beim Aufwickeln im Zusammenhang mit dem Anspinnen auftreten könnten, ausschließen zu können.The invention has for its object to provide a method and an apparatus to exclude thread breaks or irregularities that could occur due to differences in speed between thread delivery and thread winding during winding in connection with piecing.

Diese Aufgabe wird verfahrensmäßig durch die Merkmale im kennzeichnenden Teil des Patentanspruches 1 bis 7 und vorrichtungsmäßig durch die Merkmale der Ansprüche 8 bis 14 gelöst.This object is achieved procedurally by the features in the characterizing part of patent claims 1 to 7 and device-wise by the features of claims 8 to 14.

Wenn im Zusammenhang mit der Konizität oder der Geschwindigkeit von der Spule die Rede ist, so umfaßt dies im Sinne der vorliegenden Erfindung auch die Leerhülse, auf die noch kein Faden aufgewickelt ist.In the context of the present invention, when the spool is mentioned in connection with the taper or the speed, this also includes the empty tube onto which no thread has yet been wound.

Der ermittelte Ist-Außendurchmesser der Spule ist diejenige Größe, aus der unter der Voraussetzung des Bekanntseins der Konizität der Spule exakt auf die beim Spulenwechsel oder Anspinnen auftretenden Unterschiede der Umfangsgeschwindigkeit zwischen der Spulenlängsmitte und den Spulenenden geschlossen werden kann. Dabei kann dieser Ist-Außendurchmesser nach Wahl am großen oder am kleinen Durchmesser oder mitting zwischen den beiden Spulenenden ermittelt werden. Dadurch, daß die Antriebsgeschwindigkeit der Spule gegenüber der Arbeitsgeschwindigkeit in strikter Abhängigkeit vom ermittelten Ist-Außendurchmesser geändert wird, läuft der mit der vorgegeben Liefergeschwindigkeit ankommende Faden korrekt auf die Spule auf, so daß Fadenbrüche aufgrund der großen Fadenspannung einerseits und Ungleichmäßigkeiten im Wickelbild aufgrund zu geringer Fadenspannung andererseits zuverlässig vermieden werden. Vorteilhaft ist dabei, daß der Faden beim Spulenwechsel oder Anspinnen unverändert mit der jeweils eingestellten Liefergeschwindigkeit aufgewickelt wird, so daß der Spinnvorgang nicht notwendigerweise unterbrochen oder umgesteuert zu werden braucht.The determined actual outside diameter of the bobbin is the size from which, assuming the conicity of the bobbin is known, it is possible to infer exactly the differences in the peripheral speed between the longitudinal center of the bobbin and the ends of the bobbin when the bobbin is changed or pieced. This actual outside diameter can be determined at the large or small diameter or in the middle between the two coil ends. Because the drive speed of the bobbin is changed in relation to the working speed in strict dependence on the determined actual outside diameter, the thread arriving at the specified delivery speed runs onto the bobbin correctly, so that thread breaks due to the large thread tension on the one hand and unevenness in the winding pattern due to too little On the other hand, thread tension can be reliably avoided. It is advantageous that the thread is wound unchanged at the respectively set delivery speed when changing bobbins or piecing, so that the spinning process does not necessarily have to be interrupted or reversed.

Zweckmäßig ist dabei die Vorgangsweise gemäß Anspruch 2, weil das Drosseln der Antriebsgeschwindigkeit gegenüber der Arbeitsgeschwindigkeit in Abhängigkeit vom Ist-Außendurchmesser der Spule exakt den tatsächlichen Gegebenheiten entspricht, was zu einer wesentlich verbesserten Wickelqualität gegenüber dem bekannten Verfahren mit genereller Absenkung der Antriebsgeschwindigkeit führt. Die in striker Abhängigkeit vom ermittelten Ist-Außendurchmesser der Spule bzw. Leerhülse vorgenommene Änderung der Antriebsgeschwindigkeit ermöglicht das Anspinnen bei hohen Fadenlaufgeschwindigkeiten.The procedure according to claim 2 is expedient because the throttling of the drive speed relative to the working speed as a function of the actual outside diameter of the coil corresponds exactly to the actual circumstances, which leads to a substantially improved winding quality compared to the known method with a general reduction in the drive speed. The change in the drive speed, which is strictly dependent on the determined actual outside diameter of the bobbin or empty tube, enables piecing at high thread speeds.

In der Praxis hat sich die Verfahrensweise gemäß Anspruch 3 als besonders zweckmäßig erwiesen. Innerhalb dieses begrenzten Bereiches von bis zu l5 % wird die Änderung der Antriebsgeschwindigkeit durchgeführt. Die Änderung ist um so kleiner, je größer der Außendurchmesser der Spule und je schwächer die Konizität der Spule ist.In practice, the procedure according to claim 3 has proven to be particularly useful. The drive speed is changed within this limited range of up to 15%. The change is smaller the larger the outside diameter of the coil and the weaker the taper of the coil.

Eine weitere, wichtige Maßnahme ist in Anspruch 4 enthalten. Der mittlere Ist-Außendurchmesser ist nämlich der Wert, der sich verfahrensmäßig und vorrichtungsmäßig am leichtesten ermitteln läßt. Aus dem Wert des mittleren Ist-Außendurchmessers kann exakt auf die Geschwindigkeitsunterschiede geschlossen werden, die sich über die Spulenlänge zwischen den Spulenenden ergeben. Die Datenübertragung stellt ein fehlerarmes, ausreichend schnelles und dabei außerordentlich exaktes Verfahren dar, das sich für dieses Problem besonders eignet. Die Auswertung und Umsetzung der ermittelten Werte in die Änderung der Antriebsgeschwindigkeit wird in üblicher Weise mittels eines oder mehreren Mikroprozessoren durchgeführt.Another important measure is included in claim 4. The mean actual outside diameter is the value that is easiest to determine in terms of process and device. From the value of the average actual outside diameter, it is possible to draw precise conclusions about the speed differences that result over the coil length between the coil ends. Data transmission is a low-error, sufficiently fast and extremely precise method that is particularly suitable for this problem. The evaluation and conversion of the determined values into the change in the drive speed is carried out in the usual way by means of one or more microprocessors.

Eine weitere, zweckmäßige Verfahrensvariante, bei der zum Anspinnen die von Spulen-Tragarmen gehaltene Spule aus der Arbeitslage in eine festgelegte Spulenfreigabestellung verschwenkt wird, geht aus Anspruch 5 hervor. Über das Maß der Verschwenkung oder die Zeitdauer der Schwenkbewegung der Spulentragarme aus der Arbeitslage in die Spulenfreigabestellung kann exakt auf den Ist-Außendurchmesser geschlossen werden, wobei vorteilhafterweise für den Betrieb der Vorrichtung ohnedies notwendige Komponenten benutzt werden.A further, expedient variant of the method in which the spool held by the spool support arms is pivoted from the working position into a fixed spool release position for spinning is disclosed in claim 5. The actual outside diameter can be deduced exactly from the extent of the pivoting or the duration of the pivoting movement of the coil support arms from the working position into the coil release position, wherein advantageously necessary components are used anyway for the operation of the device.

Eine weitere, zweckmäßige Verfahrensvariante, bei der zum Anspinnen eine Hilfsantriebsrolle aus einer Passivstellung inn Anlage an den Umfang der Spule bzw. Leerhülse bewegbar ist, geht aus Anspruch 5 hervor. Auch das Ausmaß oder die Zeitdauer der Bewegung der Hilfsantriebsrolle zwischen der festgelegten Passivstellung und ihrer Anlage am Spulen- bzw. Leerhülsenumfang lassen einen exakten Rückschluß auf den Ist-Außendurchmesser der Spule bzw. Leerhülse zu.A further, expedient variant of the method, in which an auxiliary drive roller can be moved from a passive position in contact with the circumference of the coil or empty sleeve for piecing, can be seen from claim 5. The extent or the duration of the movement of the auxiliary drive roller between the defined passive position and its abutment on the circumference of the spool or empty tube also allows an exact conclusion to be drawn about the actual outside diameter of the spool or empty tube.

Eine andere Verfahrensvariante, bei der die Fadenspinnlänge fortwährend ermittelt und gespeichert wird, geht aus Anspruch 7 hervor. Die jeweilige Fadenspinnlänge jeder Spinnstelle wird in einer Steuereinheit in der Maschinenzentrale festgehalten. Durch das Material des Fadens bedingte Abweichungen wirken sich erst bei größeren Spulen-Außendurchmessern aus. Da bei größeren Spulen-Außendurchmesseren aber die Unterschiede zwischen der Umfangsgeschwindigkeit in der Spulenlängsmitte und an den Spulenenden kleiner werden, werden auch die materialbedingten Abweichungen dann kompensiert.Another method variant, in which the thread spinning length is continuously determined and stored, is evident from claim 7. The respective thread spinning length of each spinning station is recorded in a control unit in the machine center. Deviations caused by the material of the thread only have an effect on larger bobbin outer diameters. However, since the differences between the circumferential speed in the longitudinal center of the coil and at the coil ends become smaller with larger coil outer diameters, the material-related deviations are then also compensated for.

Zur Durchführung des Verfahrens eignet sich besonders eine Vorrichtung gemäß Anspruch 9, bei der Fühler oder Lichtschranken über den wachsenden außendurchmesser der Spule nacheinader betätigt werden, so daß sie in der Lage sind, der Steuereinheit den Ist-Außendurchmesser exakt mitzuteilen. Solche Fühler oder Lichtschranken sind betriebssicher und platzsparend unterzubringen.A device according to claim 9 is particularly suitable for carrying out the method, in which sensors or light barriers are actuated in succession via the growing outside diameter of the coil, so that they are able to tell the control unit the actual outside diameter exactly. Such sensors or light barriers are reliable and space-saving.

Eine andere Ausführungsform der Vorrichtung, die eine Spule und die Spule tragende, verschwenkbare Spulen-Tragarme aufweist, die beim Anspinnen in einem vom Ist-Außendurchmesser der Spule abhängigen Maß in eine Spulenfreigabestellung verschwenkbar sind, geht aus den Ansprüchen 10 und 11 hervor. In vorteilhafter Weise werden hier ohnedies in der Vorrichtung enthaltene Komponenten zur Ermittlung des Ist-Außendurchmessers herangezogen. Es braucht hierbei zur Ermittlung des Ist-Außendurchmessers nicht in den unmittelbaren Bewegungsbereich der Spule eingegriffen zu werden, sondern der Ist-Außendurchmesser wird an einer von der Spule entfernten Stelle exakt abgegriffen. Für die Praxis hat sich dabei eine Ausführungsform der Vorrichtung bawährt, wie sie aus Anspruch 12 zu entnehmen ist. Ein Potentiometer oder eine Zeitgliederschaltung sind zuverlässige und verschmutzungsunanfällig arbeitende Bestandteile, die kompakt sind gut nutzbare Signale erzeugen.Another embodiment of the device, which has a bobbin and the bobbin, pivotable bobbin support arms, which can be pivoted to a degree dependent on the actual outside diameter of the bobbin in a bobbin release position when spinning, claims 10 and 11. Advantageously, components contained in the device are used here anyway to determine the actual outside diameter. To determine the actual outside diameter, it is not necessary to intervene in the immediate range of movement of the coil, but the actual outside diameter is tapped exactly at a point distant from the coil. In practice, an embodiment of the device has proven useful, as can be gathered from claim 12. A potentiometer or a timer circuit are reliable components that are not susceptible to contamination and that are compact and generate usable signals.

Eine weitere, alternative Ausführungsform der Vorrichtung, bei der eine zwischen einer festgelegten Passivstellung und einer vom Ist-Außendurchmesser der Spule abhängigen Antriebsstellung am Spulenumfang verschwenkbare Hilfsantriebsrolle zum Antreiben der Spule beim Anspinnen vorgesehen ist, wobei die Hilfsantriebsrolle mit einer von der Steuereinheit angesteuerten Antriebsvorrichtung in Verbindung steht, geht aus Anspruch 13 hervor. Auch hierbei wird wiederum entfernt vom Bewegungsbereich der Spule die Meßvorrichtung benutzt, um über eine ohnedies für die Funktion der Vorrichtung notwendige Komponente den jeweiligen Ist-Außendurchmesser zu ermitteln und der Steuereinheit zu übermitteln.A further, alternative embodiment of the device, in which an auxiliary drive roller which can be pivoted between a fixed passive position and a drive position which is dependent on the actual outer diameter of the coil, is provided for driving the coil during piecing, the auxiliary drive roller being connected to a drive device controlled by the control unit stands out from claim 13. Here too, the measuring device is used away from the movement range of the coil in order to determine the respective actual outside diameter via a component which is anyway necessary for the function of the device and to transmit this to the control unit.

Zweckmäßig ist schließlich auch die Ausführungsform der Vorrichtung gemäß Anspruch 14, bei der eine Steuereinheit vorgesehen ist, die mit den Faden liefernden Abzugswalzen sowie mit einer Antriebsvorrichtung für die Spule in Verbindung steht und ein Rechenglied enthält, das fortwährend die Fadenspinnlänge ermittelt und speichert. Da die Steuereinheit wie üblich ohnedies über die Fadenspinnlänge informiert ist, bedeutet es keinen nennenswerten Mehraufwand mehr, das Rechenglied so zu erweitern, daß es mit vorbestimmten und eingespeicherten Werten über die Fadenspinnlänge den Ist-Außendurchmesser der Spule beim Anspinnen ermittelt und die Steuereinheit in die Lage versetzt, die dazu notwendige Geschwindigkeitsänderung für die Antriebsvorrichtung einzusteuern.Finally, the embodiment of the device according to claim 14 is also expedient, in which a control unit is provided which is connected to the take-off rollers supplying the thread and to a drive device for the bobbin and contains a computing element which continuously determines and stores the thread spinning length. Since the control unit is informed about the thread spinning length anyway as usual, it no longer means any significant additional effort to expand the computing element in such a way that that it determines the actual outside diameter of the bobbin during piecing with predetermined and stored values over the thread spinning length and enables the control unit to control the speed change required for this for the drive device.

Die Erfindung wird anhand der nachstehenden Beschreibung und in Zeichnungen dargestellter Ausführungsbeispiele erläutert. Es zeigen:

  • Fig. l eine Vorrichtung zum Wickeln konischer Spulen in schematischer Darstellung;
  • Fig. 2 eine abgeänderte Ausführungsform der Vorrichtung in einer anderen Ansicht;
  • Fig. 3 eine Detailvariante; und
  • Fig. 4 ein Schaubild mit den Geschwindigkeitsunterschieden einer Spule bei unterschiedlicher Konizität und unterschiedlichem mittleren Außendurchmesser.
The invention is explained on the basis of the following description and exemplary embodiments shown in the drawings. Show it:
  • Fig. L shows a device for winding conical coils in a schematic representation;
  • Fig. 2 shows a modified embodiment of the device in a different view;
  • 3 shows a detailed variant; and
  • Fig. 4 is a graph showing the speed differences of a coil with different taper and different average outer diameter.

Wird eine konische Spule 6 (Fig. 2) bzw. Leerhülse 7 in ihrer Längsmitte M (Fig. l) mittels einer Antriebsrolle 9 über ihren Außendurchmesser D im mittleren Längenbereich mit einer vorbestimmten Arbeitsgeschwindigkeit angetrieben, so differieren die Umfangsgeschwindigkeiten nahe den beiden Spulenenden e und E aufgrund der dort vom mittleren Außendurchmesser D unterschiedlichen Außendurchmesser D2 und Dl beträchtlich von der Arbeitsgeschwindigkeit. Das Schaubild gemäß Fig. 4 verdeutlicht in Kurvenform diese Geschwindigkeitsunterschiede Δ V (e, E) beispielsweise für eine Spule mit einer Konizität von 2° und einer Spule mit einer Konizität von 4° 20′. Es ist in diesem Schaubild auf der horizontalen Achse der mittlere Außendurchmesser D aufgetragen, während auf der vertikalen Achse die Geschwindigkeitsänderung in Prozent angegeben ist. Die vertikale Achse spiegelt dabei die positiven und negativen Geschwindigkeitsänderungen Δ V (e, E) wieder, die sich zwischen dem Außendurchmesser D und den Außendurchmessern Dl und D2 an den beiden Enden e und E der Spule 6 ergeben. Die Werte für die zu berücksichtigenden Geschwindigkeitsänderungen Δ V (e, E) werden für verschiedene Konizitäten und Fasermaterialien empirisch ermittelt. Beispielsweise ergibt sich bei einer Spule 6 mit einer Konizität von 2° eine Geschwindigkeitsänderung um annähernd + 5%, während die Geschwindigkeitsänderung bei einer 4° 20′-Spule, z.B. bei leerer Spulenhülse 7, mehr als + l0 % beträgt. Das Schaubild gemäß Fig. 4 läßt auch deutlich erkennen, daß diese Geschwindigkeitsunterschiede mit steigendem mittleren Außendurchmesser D allmählich abnehmen. Aus dem Schaubild ergibt sich somit klar, daß bei einer leeren Spulenhülse nach einem Spulenwechsel und beim Bilden der üblichen Fadenreserve FR (Fig. l) am Ende E der Spule 6 mit dem größeren Durchmesser Dl der gelieferte Faden um bis zu l5 % zu schnell aufgewickelt wird, was einen unter Umständen zu einem Fadenbruch führenden Anstieg der Fadenspannung bewirkt, obwohl die Leerhülse 7 in ihrem mittleren Längenbereich mit der Fadenliefergeschwindigkeit angetrieben wird. Umgekehrt wird bei einem Anspinnvorgang, der am Ende e der Leerhülse 7 oder der Spule 6 mit dem kleinen Durchmesser D2 vorgenommen wird, die Umfangsgeschwindigkeit der Leerhülse 7 bzw. der Spule 6 im Auflaufbereich des Fadens F nicht mehr ausreichen, um die grundsätzlich vorbestimmte Fadenspannung aufrechtzuerhalten, so daß sich der Faden 5 lockert und ein ungleichmäßiges Wickelbild erzeugt.If a conical coil 6 (FIG. 2) or empty sleeve 7 is driven in its longitudinal center M (FIG. 1) by means of a drive roller 9 via its outer diameter D in the middle length range at a predetermined working speed, then the peripheral speeds differ near the two coil ends e and E due to the outer diameters D2 and Dl differing there from the mean outer diameter D considerably from the working speed. The graph according to FIG. 4 illustrates in curve form these speed differences Δ V (e, E), for example for a coil with a conicity of 2 ° and a coil with a conicity of 4 ° 20 '. In this diagram, the average outer diameter D is plotted on the horizontal axis, while the speed change is given in percent on the vertical axis. The vertical axis reflects the positive and negative speed changes Δ V (e, E), which are located between the outer diameter D and the outer diameters D1 and D2 at the two ends e and E of the coil 6 surrender. The values for the speed changes Δ V (e, E) to be taken into account are determined empirically for different conicity and fiber materials. For example, in the case of a coil 6 with a taper of 2 °, there is a change in speed of approximately + 5%, while the change in speed in the case of a 4 ° 20 ′ coil, for example in the case of an empty coil sleeve 7, is more than + 10%. The diagram according to FIG. 4 also clearly shows that these speed differences gradually decrease with increasing average outer diameter D. The diagram thus clearly shows that when the bobbin tube is empty after a bobbin change and when the usual thread reserve F R (FIG. 1) is formed at the end E of the bobbin 6 with the larger diameter D1, the thread supplied is up to 15% too quickly is wound up, which causes an increase in the thread tension which may lead to a thread break, although the empty tube 7 is driven in its middle length range at the thread delivery speed. Conversely, during a piecing process that is carried out at the end e of the empty tube 7 or the bobbin 6 with the small diameter D2, the peripheral speed of the empty tube 7 or the bobbin 6 in the run-up region of the thread F will no longer be sufficient to maintain the basically predetermined thread tension , so that the thread 5 loosens and generates an uneven winding pattern.

Um diese vorerwähnten Nachteile zu beseitigen, wird die Antriebsgeschwindigkeit der Leerhülse 7 bzw. der Spule 6 bei einem Anspinnvorgang gegenüber der Arbeitsgeschwindigkeit geändert, d.h. angehoben oder abgesenkt, um ein gleichmäßiges Aufnehmen des mit einer festgelegten Liefergeschwindigkeit ankommenden Fadens zu gewährleisten. Dabei wird die Umfangsgeschwindigkeit der Leerhülse 7 bzw. der Spule 6 in strikter Abhängigkeit vom Ist-Außendurchmesser D, Dl bzw. D2 der Leerhülse 7 bzw. der Spule 6 (siehe Kurven von Fig. 4) und in Abhängigkeit von der jeweiligen Konizität der Spule 6 geändert. Der Ist-Außendurchmesser muß dazu allerdings ermittelt werden.In order to eliminate these aforementioned disadvantages, the drive speed of the empty tube 7 or the bobbin 6 is changed in relation to the working speed during a piecing process, ie raised or lowered, in order to ensure a uniform pick-up of the thread arriving at a fixed delivery speed. The peripheral speed of the empty sleeve 7 or the coil 6 is in strict dependence on the actual outer diameter D, Dl or D2 of the empty sleeve 7 or the coil 6 (see curves of FIG. 4) and depending on the respective taper of the coil 6 changed. However, the actual outside diameter must be determined.

Bei einer in Fig. l schematisch angedeuteten Spinnstelle l kommt der Faden F aus einem beispielsweise als OE-Rotor 2 ausgebildeten Spinnelement. Er läuft zwischen Abzugswalzen 3 ein, die mit einer Antriebsvorrichtung 4 in Verbindung stehen und die Liefergeschwindigkeit des Fadens F bestimmen.In the case of a spinning station 1 indicated schematically in FIG. 1, the thread F comes from a spinning element designed, for example, as an OE rotor 2. It runs between take-off rollers 3, which are connected to a drive device 4 and determine the delivery speed of the thread F.

Die Leerhülse 7 bzw. die Spule 6 wird in üblicher Weise von Spulen-Tragarmen 5 drehbar gehalten, und zwar zweckmäßigerweise mit Hilfe von Spulentellern 8 und 8a. In der Längsmitte M der Spule 6 greift an ihrem Außenumfang am mittleren Ist-Durchmesser D eine Antriebsrolle 9 an, die der Hauptantrieb zum Wickeln oder auch ein Hilfsantrieb sein kann, und die mit einer Antriebsvorrichtung l0 in bewegungsübertragender Verbindung steht.The empty sleeve 7 or the coil 6 is rotatably held in the usual manner by coil support arms 5, expediently with the aid of coil plates 8 and 8a. In the longitudinal center M of the coil 6, a drive roller 9 engages on its outer circumference on the average actual diameter D, which drive roller can be the main drive for winding or also an auxiliary drive, and which is in motion-transmitting connection with a drive device 10.

Für einen Anspinnvorgang in Verbindung mit einem Spulenwechsel oder auch zur Fadenbruchbehebung wird eine Zentrierspindel ll verwendet, die mit einer Antriebsvorrichtung l2 in Verbindung steht und ein mit einem Abwurfende l3 auslaufendes Teil kleinen Durchmessers besitzt. In üblicher Weise ist die Zentrierspindel ll mit gegenläufigen Gewindegängen ll0, lll an ihrer Oberfläche und mit einer mittigen Zentriernut ll2 ausgestattet, so daß ein Zentrieren des Fadens F genauso möglich ist wie eine zwangsweise Bewegung des Fadens F in Richtung zum kleineren Ende e oder in Richtung zum größeren Ende E der Spule 6. Für das Wickeln des Fadens F im Kreuzgang ist ferner ein changierender Fadenführer l4 vorgesehen, der in Längsrichtung der Spule 6 hin und her bewegt wird und den Faden F führt. Während des Anspinnens wird der Fadenführer l4 nicht eingesetzt.A centering spindle 11 is used for a piecing process in connection with a bobbin change or also for thread breakage elimination. The centering spindle 11 is connected to a drive device l2 and has a part of small diameter that runs out with a discharge end l3. In the usual way, the centering spindle 11 is provided with opposite threads ll0, llll on its surface and with a central centering groove ll2, so that centering of the thread F is just as possible as a forced movement of the thread F towards the smaller end e or in the direction to the larger end E of the bobbin 6. For the winding of the thread F in the cloister, an alternating thread guide 14 is also provided, which is moved back and forth in the longitudinal direction of the bobbin 6 and guides the thread F. The thread guide 14 is not used during piecing.

Ferner ist eine mit l5 bezeichnete Steuereinheit vorgesehen, die die einzelnen Komponenten der Spinnstelle l steuert. Die Steuereinheit besitzt beispielsweise einen Eingabeteil l6 sowie ein Rechenglied 40 (z.B. einen Mikroprozessor) mit Speichern 42 und 43. Die Antriebsvorrichtung l0 für die Spule 6 ist über eine Steuerleitung l7 an die Steuereinheit l5 angeschlossen, während die Antriebsvorrichtungen l2 und 4 für die Zentrierspindel ll bzw. die Abzugswalzen 3 über die Steuerleitungen oder Signalleitungen l8 und l9 an die Steuereinheit l5 angeschlossen sind.Furthermore, a control unit designated by l5 is provided, which controls the individual components of the spinning station 1. The control unit has, for example, an input part 16 and a computing element 40 (for example a microprocessor) with memories 42 and 43. The drive device 10 for the coil 6 is connected to the control unit 15 via a control line 17, while the drive devices 12 and 4 for the centering spindle 11 or the take-off rollers 3 are connected to the control unit l5 via the control lines or signal lines l8 and l9.

Mit der Steuereinheit l5 wird beim Kreuzwickeln und Arbeiten des Fadenführers l4 die Antriebsvorrichtung l0 mit einer Arbeitsgeschwindigkeit angesteuert, die sich aus der Liefergeschwindigkeit der Abzugswalzen 3 ergibt. Die Geschwindigkeitsänderungen, die sich beim Auflaufen des Fadens F dann zwischen der Längsmitte M und den beiden Enden e und E der Spule 6 ergeben, werden entweder durch nicht dargestellte Kompensiermittel für die Fadenspannung oder durch eine entsprechende Steuerung der Bewegung des Fadenführers l4 ausgeglichen. Insbesondere beim Anspinnen wird jedoch die Antriebsgeschwindigkeit der Antriebsvorrichtung l0 und damit der Antriebsrolle 9 gegenüber der Arbeitsgeschwindigkeit in Abhängigkeit vom Ist-Außendurchmesser der Spule 6 so abgeändert, daß die Umfangsgeschwindigkeit der Spule 6 im Auflaufbereich des Fadens F mit der Liefergeschwindigkeit übereinstimmt. Als Auflaufbereich des Fadens F wird dabei der Bereich der Leerhülse 7 bzw. der Spule 6 verstanden, auf welche der Faden F beim Anspinnen, d.h. bei Bildung der in Fig. l angedeuteten Fadenreserve FR, aufläuft. Dies bedeutet, daß bei einem Spulenwechsel mit nachfolgendem Anspinnen, bei welchem die Fadenreserve FR an dem Ende E der Leerhülse 7 mit dem großen Durchmesser Dl gebildet wird, die Antriebsgeschwindigkeit der Leerhülse 7 gegenüber der Arbeitsgeschwindigkeit nach abgeschlossenem Anspinnvorgang entsprechend abgesenkt wird, während die Antriebsgeschwindigkeit bei einem Anspinnvorgang an dem Ende e mit dem kleinen Durchmesser D2 gegenüber der Arbeitsgeschwindigkeit angehoben wird.With the control unit l5, when driving the thread guide l4 in a cross winding manner, the drive device l0 is driven at a working speed which results from the delivery speed of the take-off rollers 3. The speed changes which then occur when the thread F runs between the longitudinal center M and the two ends e and E of the bobbin 6 are compensated either by compensating means for the thread tension (not shown) or by correspondingly controlling the movement of the thread guide 14. In particular when piecing, however, the drive speed of the drive device 10 and thus the drive roller 9 is changed relative to the working speed as a function of the actual outer diameter of the bobbin 6 in such a way that the peripheral speed of the bobbin 6 in the run-up region of the thread F corresponds to the delivery speed. The run-up area of the thread F is understood to be the area of the empty tube 7 or the bobbin 6, onto which the thread F runs when spinning, ie when the thread reserve F R indicated in FIG. 1 is formed. This means that in the case of a bobbin change with subsequent piecing, in which the thread reserve F R is formed at the end E of the empty tube 7 with the large diameter D1, the drive speed of the empty tube 7 is correspondingly reduced compared to the working speed after the piecing process has been completed, while the drive speed during a piecing process at the end e with the small diameter D2 compared to the working speed.

Bei der Ausführungsform gemäß Fig. l ist eine Änderung der Antriebsgeschwindigkeit dadurch möglich, daß in der Steuereinheit l5 im Rechenglied 40, das mit entsprechenden Daten über die Konizität der Spule 6 und verschiedenen Ist-Außerdurchmesserwerten entsprechend vorbestimmter Fadenspinnlängenwerte vorprogrammiert ist, beispielsweise durch Überwachung der Anzahl der Umdrehungen der Abzugswalzen 3, die Fadenspinnlänge fortwährend ermittelt und gespeichert wird, so daß das Rechenglied 40 aus der jeweiligen Fadenspinnlänge exakt auf den Ist-Außendurchmesser D, Dl bzw. D2 der Spule 6 schließen kann. Ferner ist das Rechenglied 40 entsprechend einer der Kurven der Fig. 4 so vorprogrammiert, daß es zunächst über die Ist-Fadenspinnlänge den Ist-Außendurchmesser und über den Ist-Außendurchmesser dann die notwendige Änderung der Antriebsgeschwindigkeit der Antriebsvorrichtung l0 ermittelt. Bei einem Spulenwechsel ist die Fadenspinnlänge noch Null, so daß das Rechenglied 40 bei bekannter Spulengröße und Konizität die maximale Änderung (siehe Fig. 4) der Antriebsgeschwindigkeit festlegt. Mit steigender Fadenspinnlänge ermittelt das Rechenglied 40 den jeweiligen Ist-Außendurchmesser, zweckmäßigerweise den mittleren Ist-Außendurchmesser D der Spule 6, und berechnet damit das Maß der beispielsweise für einen Anspinnvorgang notwendigen Geschwindigkeitsänderung für die Antriebsvorrichtung l0. Dabei kann durch entsprechende Programmierung auch ein unterschiedliches Anwachsen des Spulendurchmessers bei Verarbeitung unterschiedlichen Fadenmaterials berücksichtigt werden.In the embodiment according to FIG. 1, a change in the drive speed is possible in that in the control unit l5 in the computing element 40, which is preprogrammed with corresponding data about the conicity of the bobbin 6 and various actual outside diameter values corresponding to predetermined thread spinning length values, for example by monitoring the number of the revolutions of the take-off rollers 3, the thread spinning length is continuously determined and stored, so that the computing element 40 can infer the actual outer diameter D, D1 or D2 of the bobbin 6 from the respective thread spinning length. Furthermore, the arithmetic element 40 is preprogrammed in accordance with one of the curves in FIG. 4 so that it initially The actual outside diameter is then determined via the actual thread spinning length and the necessary change in the drive speed of the drive device 10 is then determined via the actual outside diameter. When changing the bobbin, the thread spinning length is still zero, so that the computing element 40 determines the maximum change (see FIG. 4) of the drive speed with a known bobbin size and taper. As the thread spinning length increases, the computing element 40 determines the respective actual outside diameter, expediently the mean actual outside diameter D of the bobbin 6, and thus calculates the extent of the speed change for the drive device 10, which is necessary, for example, for a piecing process. Appropriate programming can also take into account a different increase in the bobbin diameter when processing different thread material.

Sobald der Anspinnvorgang abgeschlossen ist und der Fadenführer l4 den Faden F für die changierende Kreuzwickelbewegung übernimmt, wird das Rechenglied 40 deaktiviert, worauf durch die Steuereinheit l5 die Antriebsvorrichtung l0 wieder mit der von den Abzugswalzen 3 vorgegebenen Arbeitsgeschwindigkeit angesteuert wird.As soon as the piecing process is completed and the thread guide 14 takes over the thread F for the oscillating cross winding movement, the computing element 40 is deactivated, whereupon the control unit 15 drives the drive device 10 again at the working speed predetermined by the take-off rollers 3.

Bei einer anderen Ausführungsform einer solchen Spinnstelle l′ gemäß Fig. 2 sind zwei alternative Lösungen zum Ermitteln des Ist-Außendurchmessers der Spule 6 bzw. Spulenhülse 7 angedeutet, von denen in der Praxis jeweils nur eine eingesetzt wird.In another embodiment of such a spinning station l 'according to FIG. 2, two alternative solutions for determining the actual outside diameter of the coil 6 or coil sleeve 7 are indicated, of which only one is used in practice.

Bei der Spinnstelle l′ sind den Komponenten von Fig. l entsprechende Komponenten mit denselben Bezugszeichen gekennzeichnet.At the spinning station l 'corresponding components of Fig. L are identified by the same reference numerals.

Der Faden F läuft zwischen den Abzugswalzen 3 hindurch und wird an einer Umlenkrolle 3′, die auch eine Kompensiereinrichtung sein kann, umgelenkt, um dann über die Spulwalze 9a auf die Leerhülse 7 bzw. auf die in strichlierten Linien angedeutete Spule 6 aufgewickelt zu werden. Der Fadenführer l4 übernimmt hierbei die changierende Funktion während des normalen Kreuzwickelvorganges.The thread F runs between the take-off rollers 3 and is deflected on a deflection roller 3 ', which can also be a compensating device, in order then to be wound up over the winding roller 9a onto the empty tube 7 or onto the bobbin 6 indicated in broken lines. The thread guide l4 takes over the changing function during the normal cross winding process.

Die Spulwalze 9a steht mit einer Antriebsvorrichtung l0a in Verbindung, die über eine Steuerleitung l7a an die Steuereinheit l5 angeschlossen ist. Die Leerhülse 7 bzw. die Spule 6 wird von den Spulen-Tragarmen 5 getragen, die in einem Schwenklager 20 stationär, aber schwenkbar gehalten sind. Zwischen die Spulwalze 9a und die Spule 6 kann bei einem Fadenbruch oder zum Spulenwechsel bzw. Anspinnen ein Trennelement 43 eingeschoben werden, das den Antrieb der Spule 6 durch die Hauptantriebsrolle 9a schlagartig unterbricht.The winding roller 9a is connected to a drive device 10a which is connected to the control unit 15 via a control line 17a. The empty sleeve 7 or the coil 6 is carried by the coil support arms 5, which are held in a pivot bearing 20 in a stationary but pivotable manner. In the event of a thread break or for bobbin change or piecing, a separating element 43 can be inserted between the winding roller 9a and the bobbin 6, which suddenly interrupts the drive of the bobbin 6 by the main drive roller 9a.

An der anderen Seite der Tragarme 5 ist eine Schwenkhalterung 2l für eine Hilfsantriebsrolle 9b vorgesehen, die mit einem Antrieb l0b in Verbindung steht, der über eine Steuerleitung l7b an die Steuereinheit l5 angeschlossen ist. Die Schwenkhalterung 2l ist mit einer nicht dargestellten Bewegungsvorrichtung versehen, mit der die Hilfsantriebsrolle 9b aus einer durch einen Anschlag 22 festgelegten Passivstellung an den Umfang der Spule 6 anlegbar ist, wobei eine Feder 23 für einen Anpreßdruck der Hilfsantriebsrolle 9b sorgt. Die Schwenkhalterung 2l ist in einem stationären Schwenklager 24, z.B. in einer Wartungsvorrichtung 4l, die vor den Spinnstellen einer Spinnvorrichtung hin und her fahrbar und zu einem Spulenwechsel oder zum Anspinnen vor der jeweiligen Spinnstation plazierbar ist, gelagert.On the other side of the support arms 5, a swivel bracket 2l is provided for an auxiliary drive roller 9b, which is connected to a drive l0b which is connected to the control unit l5 via a control line l7b. The swivel bracket 2l is provided with a movement device, not shown, with which the auxiliary drive roller 9b can be placed against the circumference of the coil 6 from a passive position defined by a stop 22, a spring 23 ensuring contact pressure of the auxiliary drive roller 9b. The swivel bracket 2l is in a stationary swivel bearing 24, e.g. in a maintenance device 4l, which can be moved back and forth in front of the spinning positions of a spinning device and can be placed in front of the respective spinning station for a bobbin change or for piecing.

An der Schwenkhalterung 2l ist ein Taster 25 angebracht, der mit einem Potentiometer oder einer Zeitgliederschaltung zusammenarbeitet, die eine Meßvorrichtung 26 bildet, mit der das Ausmaß und/oder die Zeitdauer der (gleichförmigen) Bewegung der Schwenkhalterung 2l aus der Passivstellung am Anschlag 22 bis zur Anlage am Umfang der Spule 6 feststellbar und in ein Steuersignal umsetzbar ist. Da die Hilfsantriebsrolle 9b den Umfang der Spule 6 umso früher erreicht, desto größer der Ist-Außendurchmesser D der Spule 6 ist, ist das Ausmaß der Bewegung der Schwenkhalterung 2l oder die Zeitdauer dieser Bewegung ein Maß für den Ist-Außendurchmesser D. Die Meßvorrichtung 26 ist über Anschlußleitungen 27 mit einer Schnittstelle 35 und über diese über eine Steuerleitung 34 mit der Steuereinheit l5 verbunden. Da die Hilfsantriebsrolle 9b nur bei einem Anspinnvorgang benutzt wird, während die Spulwalze 9a nicht in antriebsmäßiger Verbindung mit der Spule 6 bzw. Leerhülse 7 ist, läßt sich auf diese Weise der Ist-Außendurchmesser D der Spule 6 bzw. der Leerhülse 7 einfach ermitteln, so daß die Steuereinheit l5 in der Lage ist, die Antriebsgeschwindigkeit der Antriebsvorrichtung l0b entsprechend einzusteuern.On the swivel bracket 2l a button 25 is attached, which cooperates with a potentiometer or a timing circuit, which forms a measuring device 26 with which the extent and / or the duration of the (uniform) movement of the swivel bracket 2l from the passive position at the stop 22 to System on the circumference of the coil 6 can be determined and converted into a control signal. Since the auxiliary drive roller 9b reaches the circumference of the spool 6 the sooner the larger the actual outside diameter D of the spool 6, the extent of the movement of the swivel mount 2l or the duration of this movement is a measure of the actual outside diameter D. The measuring device 26 is connected via connection lines 27 to an interface 35 and via this via a control line 34 to the control unit 15. Since the auxiliary drive roller 9b is only used during a piecing process, while the winding roller 9a is not in drive connection with the bobbin 6 or empty tube 7, the actual outer diameter can be obtained in this way D simply determine the coil 6 or the empty sleeve 7, so that the control unit 15 is able to control the drive speed of the drive device 10b accordingly.

In der Wartungsvorrichtung 4l ist ferner eine Stützvorrichtung 28 für die Spulen-Tragarme 5 vorgesehen, die ebenfalls beim Spulenwechsel oder bei einem Anspinnvorgang zum Einsatz kommt. Die Stützvorrichtung 28 besitzt eine Stützgabel 29, die normalerweise ihre Endstellung auf einem Anschlag 30 einnimmt. Sie ist um ein Schwenklager 3l verschwenkbar und wird durch einen nicht dargestellten Bewegungsantrieb beaufschlagt, um bei einem Spulenwechsel oder beim Anspinnen die Spulen-Tragarme 5 anzuheben, so daß die Spule 6 nicht mehr mit der Spulwalze 9a, sondern mit der Hilfsantriebsrolle 9b zusammenarbeitet. Die Stützvorrichtung 28 wird dabei nur so weit bewegt, daß der Spulenumfang einen vorbestimmten Abstand von der Spulwalze 9a einnimmt. Da also das Ausmaß der Schwenkbewegung der Stützvorrichtung 28 in Abhängigkeit vom Ist-Außendurchmesser der Spule 6 variiert, ist das Ausmaß der Schwenkbewegung nutzbar, um den Ist-Außendurchmesser D der Spule 6 festzustellen. Die Spulen-Tragarme 5 werden in Abhängigkeit vom jeweiligen Ist-Außendurchmesser D der Spule 6 zwar jeweils um den gleichen Schwenkweg verschwenkt, um den Spulenumfang um ein vorgegebenes Maß von der Spulwalze 9a zu entfernen, doch ändert sich dabei die Lage des Schwenkbereiches, so daß diese unterschiedliche Schwenkbereichslage zur Feststellung des Ist-Außendurchmessers D der Spule 6 bzw. der Leerhülse 7 benützt werden kann.In the maintenance device 4l, a support device 28 is also provided for the bobbin support arms 5, which is also used when changing the bobbin or during a piecing process. The support device 28 has a support fork 29 which normally assumes its end position on a stop 30. It is pivotable about a pivot bearing 3l and is acted upon by a movement drive, not shown, in order to raise the bobbin support arms 5 when changing bobbins or when piecing, so that the bobbin 6 no longer cooperates with the bobbin roller 9a, but with the auxiliary drive roller 9b. The support device 28 is only moved so far that the coil circumference is at a predetermined distance from the winding roller 9a. Since the extent of the pivoting movement of the support device 28 varies depending on the actual outside diameter of the coil 6, the extent of the pivoting movement can be used to determine the actual outside diameter D of the coil 6. The spool support arms 5 are pivoted by the same swivel path as a function of the respective actual outer diameter D of the spool 6 in order to remove the spool circumference by a predetermined amount from the spooling roller 9a, but the position of the swivel range changes so that this different swivel range position can be used to determine the actual outside diameter D of the coil 6 or the empty sleeve 7.

Wird die Stützvorrichtung 28 mit gleichförmiger Geschwindigkeit bewegt, un dem Spulenumfang um das bestimmte Maß von der Spulwalze 9a zu entfernen, so kann die Zeitdauer für diese Schwenkbewegung genutzt werden für die Feststellung des mittleren Ist-Außendurchmessers D der Leerhülse 7 oder der Spule 6.If the support device 28 is moved at a uniform speed in order to remove the circumference of the spool by a certain amount from the spooling roller 9a, the time period for this pivoting movement can be used to determine the mean actual outer diameter D of the empty tube 7 or the spool 6.

Abweichend zur zuvor beschriebenen Ausführung ist bei der gezeigten Ausbildung an der Gabel 29 ein verlängernder Zeiger 32 angebracht, der entlang einem Potentiometer oder einer Zeitgliederschaltung 36 bewegbar und über Leitungen 33 an die Schnittstelle 35 Signale abzugeben in der Lage ist, die den jeweiligen Ist-Außendurchmesser D repräsentieren und die die Steuereinheit l5 in die Lage versetzen, die Antriebsvorrichtung l0b entsprechend anzusteuern, d.h. die Antriebsgeschwindigkeit gegenüber der Liefergeschwindigkeit des Fadens F zu reduzieren oder anzuheben. Auch die Stützvorrichtung 28 ist in der Wartungseinheit 4l enthalten, so daß die Wartungseinheit 4l eingesetzt wird, um die Ist-Außendurchmesser D aller vorgesehenen Spinnstationen bei einem dort fälligen Anspinnvorgang an die Steuereinheit l5 zu übermitteln, die zweckmäßigerweise die zentrale Steuereinheit der Spinnvorrichtung ist.In contrast to the previously described embodiment, in the embodiment shown, an extending pointer 32 is attached to the fork 29, which can be moved and moved along a potentiometer or a timing circuit 36 Lines 33 is able to output signals to the interface 35, which represent the respective actual outside diameter D and which enable the control unit 15 to control the drive device 10b accordingly, ie to reduce or increase the drive speed compared to the delivery speed of the thread F. . The support device 28 is also contained in the maintenance unit 4l, so that the maintenance unit 4l is used to transmit the actual outside diameter D of all the spinning stations provided to the control unit l5 when a piecing operation is due there, which is expediently the central control unit of the spinning device.

Weiterhin sind in Wartungsvorrichtung 4l in üblicher Weise eine Fadenabsaugvorrichtung 37 sowie ein schwenkbares Saugrohr 38 und andere, nicht gezeigte Mittel, die für das Anspinnen und/oder den Spulenwechsel erforderlich sind. Diese Mittel haben aber mit der Geschwindigkeitssteuerung beim Anspinnen bzw. beim Spulenwechsel nichts zu tun, do daß der Einfachheit halber auf die DE-OS 3.l23.494 verwiesen wird, die hierzu deutlichere Informationen liefert.Furthermore, in the maintenance device 4l there are in the usual way a thread suction device 37 as well as a pivotable suction pipe 38 and other means, not shown, which are required for piecing and / or changing the bobbin. However, these means have nothing to do with the speed control during piecing or when changing the bobbin, so that for the sake of simplicity reference is made to DE-OS 3.123.494, which provides clearer information on this.

Fig. 3 verdeutlicht eine Detailvariante zum Ermitteln des Ist-Außendurchmessers D der Spule 6 oder der Leerhülse 7. Gemäß dieser Abbildung sind entweder mit den Spulen-Tragarmen 5 mitbewegliche oder relativ zur Achse der Spule 6 feststehende opto-elektronische oder andere berührungslose Fühler oder Lichtschranken Ll bis L4 in einer Reihenanordnung derart vorgesehen, daß die Spule 6 mit wachsendem Ist-Außendurchmesser D eine zunehmende Zahl der Lichtschranken Ll bis L4 abdeckt, die über Steuerleitungen 39 mit der Steuereinheit l5 in signalübertragender Verbindung stehen und den Ist-Außendurchmesser D der Spule 6 repräsentierende Signale liefern, aus denen die Steuereinheit l5 in der vorerwähnten Weise die Änderung der Antriebsgeschwindigkeit der Spule 6 beim Anspinnen vornehmen kann. Zweckmäßigerweise sind die Lichtschranken Ll bis L4 dem mittleren Außendurchmesser D der Spule 6 zugeordnet. Denkbar wäre aber auch, den kleinen oder großen Ist-Außendurchmesser Dl oder D2 der Spule 6 an ihrem einen oder anderen Ende e bzw. E abzutasten.3 illustrates a detailed variant for determining the actual outer diameter D of the coil 6 or the empty sleeve 7. According to this illustration, optoelectronic or other contactless sensors or light barriers which are movable with the coil support arms 5 or are fixed relative to the axis of the coil 6 are shown Ll to L4 provided in a row arrangement such that the coil 6 with increasing actual outer diameter D covers an increasing number of light barriers Ll to L4, which are in signal-transmitting connection via control lines 39 with the control unit l5 and the actual outer diameter D of the coil 6 provide representative signals from which the control unit l5 can make the change in the drive speed of the coil 6 during piecing in the aforementioned manner. The light barriers L1 to L4 are expediently assigned to the mean outer diameter D of the coil 6. However, it would also be conceivable to scan the small or large actual outer diameter D1 or D2 of the coil 6 at one or the other end e or E.

Claims (14)

  1. Method for winding conical cross-wound bobbins, in particular in OE spinning, in which the thread (F) provided at a predetermined velocity by draw-off rollers (3) is supplied to a bobbin (6) or an empty tube (7) which is driven at an operating velocity adapted to the thread supply velocity during the winding on by a drive device (9, 10, 9a, 10a, 9b, 10b) controlled by a control unit (15), characterized in that the actual outer diameter (D, D1, D2) of the bobbin (6) or empty tube (7) is determined, and in that the drive velocity of the bobbin (6) or empty tube (7) is controlled at least during the piecing phase of the thread as a function of this determined actual outer diameter (D, D1, D2) of the bobbin (6) or empty tube (7), such that the circumferential velocity of the bobbin (6) or empty tube (7) in the take-up region of the thread (F) arranged axially at a distance from the longitudinal centre of the bobbin or empty casing, which may potentially deviate from the thread supply velocity on account of the conicity of the bobbin (6) or empty tube (7), corresponds with the thread supply velocity.
  2. Method according to Claim 1, characterized in that the drive velocity during the winding of the thread (F) at the end (E) of the bobbin (6) with the largest diameter (D1) is throttled relative to the operating velocity as a function of the determined actual outer diameter (D, D1, D2).
  3. Method according to Claims 1 and 2, characterized in that the drive velocity is changed by up to 15% relative to the operating velocity.
  4. Method according to at least one of Claims 1 to 3, characterized in that the actual central outer diameter (D) of the bobbin (6) or empty tube (7) is determined and transmitted by data transmission to the control unit (15) and is evaluated by the latter to determine the degree of the required change in the drive velocity.
  5. Method according to one of Claims 1 to 4, in which, for piecing , the bobbin (6) or empty tube (7) held by bobbin carrier arms (5) is pivoted by a carrier arm support device (28) from the operating position into a predetermined bobbin release position, characterized in that the actual outer diameter (D, D1, D2) of the bobbin (6) or empty tube (7) is determined on the basis of the degree of pivoting into the bobbin release position or the time taken to effect the pivoting movement of the support device (28).
  6. Method according to Claim 5, in which an auxiliary drive roller (9, 9b) provided for piecing can be moved from a passive position to abut against the circumference of the bobbin (6) or empty tube (7), characterized in that the actual outer diameter (D, D1, D2) of the bobbin (6) or empty tube (7) is determined on the basis of the degree of or the time taken to effect the movement of the auxiliary drive roller (9, 9b) between the passive position and abutment against the circumference of the bobbin (6) or empty tube (7).
  7. Method according to one of Claims 1 to 4, in which the thread spinning length is constantly determined and stored, characterized in that the actual outer diameter (D, D1, D2) of the bobbin (6) or empty tube (7) is determined by means of stored bobbin outer diameters corresponding to predetermined thread spinning lenghts and from the constantly determined thread spinning length.
  8. Device for winding conical cross-wound bobbins, in particular in OE spinning, having draw-off rollers (3) driven at a predetermined velocity and having a drive device (9, 10, 9a, 10a, 9b, 10b), controlled by a control unit (15), for driving a bobbin (6) or empty tube (7) at an operating velocity matched to the thread supply velocity, for carrying out the method according to one or more of Claims 1 to 7, characterized in that there is associated with the bobbin (6) or empty tube (7) a device for determining the actual outer diameter (D, D1, D2) thereof, which device is connected in signal-transmitting manner to the control unit (15), which is connected in velocity-controlling manner to the drive device (9, 10, 9a, 10a, 9b, 10b) for the bobbin (6) or empty tube (7).
  9. Device according to Claim 8, characterized in that the device for determining the actual outer diameter (D, D1, D2) of the bobbin (6) or empty tube (7) has a plurality of sensors (L1 to L4), which are stationary relative to the bobbin (6) or empty tube (7), arranged in a row, which sensors are actuated successively as the outer diameter of the bobbin (6) increases.
  10. Device according to Claim 9, having pivotable bobbin carrier arms (5) bearing a bobbin (6) or empty tube (7), which carrier arms are pivotable, during piecing , to a degree dependent on the actual outer diameter of the bobbin (6) or empty tube (7), into a bobbin release position, characterized in that the device for determining the actual outer diameter (D, D1, D2) of the bobbin (6) or empty tube (7) has a measuring device (36) associated with the bobbin carrier arms (5) for the movement of the bobbin carrier arms (5) into the bobbin release position.
  11. Device according to Claim 10, in which a carrier arm support device (28), for pivoting out of a servicing device (41) arranged in front of the spinning station, can be brought up to the bobbin carrier arms (5), characterized in that the measuring device is constructed as a device (36) for determining the degree of or time taken to effect the movement of the support device (28).
  12. Device according to Claim 11, characterized in that the measuring device (36) contains a potentiometer or a timing circuit, by means of which a control signal, for example a control voltage value, representing the degree of or time taken to effect the deflection movement of the support device (28) can be produced for the control unit (15).
  13. Device according to Claim 8, having an auxiliary drive roller (9, 9b) for driving the bobbin (6) or empty tube (7) during piercing , which auxiliary drive roller can be pivoted between a predetermined passive position and a drive position against the circumference of the bobbin (6) or empty tube (7), said position being dependent upon the outer diameter of the bobbin (6) or empty tube (7), characterized in that the device for determining the actual outer diameter (D, D1, D2) of the bobbin (6) or empty tube (7) has a measuring device (26) for the degree of or the time taken to effect the respective movement of the auxiliary drive roller (9, 9b), which measuring device is arranged in the movement path of the pivot mounting (21).
  14. Device according to Claim 8, in which the control unit (15) is connected to the draw-off rollers (3) and to a drive device (9, 10, 9a, 10a, 9b, 10b) for the bobbin (6) or empty tube (7) and has a computer component (40) in the control unit (15), which computer component constantly determines and stores the thread spinning length, characterized in that the computer component (40) contains at least one re-readable store (42) and a store (43) which can be written to, in that values of the actual outer diameters of the bobbin (6) or empty tube (7) associated with thread spinning length values predetermined for at least one bobbin size and conicity are stored in the re-readable store (42) at predetermined storage locations, in that the thread spinning length in the spinning station (2) and the supply velocity of the thread (F) can be constantly stored in the store (43) which can be written to, and in that the computer component (40) can be activated at least during piecing in order to determine for the control unit (15) from the actual thread spinning length the actual outer diameter of the bobbin (6) or empty tube (7) and from the supply velocity via the actual outer diameter of the bobbin (6) or empty tube (7) the change in the drive velocity for the drive device (9, 10, 9a, 10a, 9b, 10b) and to correspondingly bring about said change.
EP89101015A 1988-02-24 1989-01-20 Method and apparatus for winding cross-wound packages Expired - Lifetime EP0329947B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3805656 1988-02-24
DE3805656A DE3805656A1 (en) 1988-02-24 1988-02-24 METHOD AND DEVICE FOR WINDING CONICAL CROSS COILS

Publications (2)

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EP0329947A1 EP0329947A1 (en) 1989-08-30
EP0329947B1 true EP0329947B1 (en) 1992-09-09

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EP89101015A Expired - Lifetime EP0329947B1 (en) 1988-02-24 1989-01-20 Method and apparatus for winding cross-wound packages

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US (1) US4988048A (en)
EP (1) EP0329947B1 (en)
JP (1) JP2662016B2 (en)
CZ (1) CZ284237B6 (en)
DE (2) DE3805656A1 (en)

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DE19548256A1 (en) * 1995-12-22 1997-06-26 Schlafhorst & Co W Determination of boundary diameter of tapered bobbin or spool with crossed winding of yarn or thread
KR20000069721A (en) * 1997-11-07 2000-11-25 이.파우. 뢰르허 Method and device for spooling a continuously running thread
EP0921087B1 (en) * 1997-11-14 2002-09-04 B a r m a g AG Method and winding apparatus for winding a continuously supplied thread
DE59809204D1 (en) * 1998-02-14 2003-09-11 Volkmann Gmbh Method and device for winding yarn onto a conical bobbin
DE19915529A1 (en) * 1999-04-07 2000-10-12 Schlafhorst & Co W Winder for conical cross wound bobbins, has a sensor to register the bobbin diameter and a sensor to monitor the position and/or movement direction of the yarn guide to set the yarn store in the yarn feed system
DE20101126U1 (en) * 2001-01-23 2001-04-19 Dietze & Schell Maschinenfabrik GmbH, 96450 Coburg Device on a direct roving winder for contactless detection of the actual diameter of the roving coil and direct roving winder with such a device
DE10139075A1 (en) * 2001-08-09 2003-02-20 Schlafhorst & Co W Open-end rotor spinning machine
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EP2042877B1 (en) * 2007-09-28 2012-02-08 Gebrüder Loepfe AG Method and device for measuring the velocity of a thread
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DE102008015908A1 (en) * 2008-03-27 2009-10-01 Oerlikon Textile Gmbh & Co. Kg Method for winding thread from cylindrical bobbin tube to cross-wound bobbin in textile machine, involves adjusting additional conicity at bobbin frame with asymmetric thread order by changing conicity factor
DE102012002579A1 (en) * 2012-02-09 2013-08-14 Oerlikon Textile Gmbh & Co. Kg Method and device for determining the required speed of a bobbin drive roller
CZ2015234A3 (en) * 2015-04-07 2016-11-16 Rieter Cz S.R.O. Method of terminating spinning on rotor spinning machine workstation
CN108357975B (en) * 2018-04-19 2019-01-01 南通德和布业有限公司 A kind of weaving winding mechanism
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Also Published As

Publication number Publication date
CZ284237B6 (en) 1998-10-14
CS112389A3 (en) 1992-01-15
DE3805656C2 (en) 1990-06-13
DE3805656A1 (en) 1989-09-07
DE58902218D1 (en) 1992-10-15
JPH028151A (en) 1990-01-11
US4988048A (en) 1991-01-29
JP2662016B2 (en) 1997-10-08
EP0329947A1 (en) 1989-08-30

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