EP0351672B1 - Apparatus for controlling the bobbin pressure on a pressing roller - Google Patents

Apparatus for controlling the bobbin pressure on a pressing roller Download PDF

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Publication number
EP0351672B1
EP0351672B1 EP89112461A EP89112461A EP0351672B1 EP 0351672 B1 EP0351672 B1 EP 0351672B1 EP 89112461 A EP89112461 A EP 89112461A EP 89112461 A EP89112461 A EP 89112461A EP 0351672 B1 EP0351672 B1 EP 0351672B1
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EP
European Patent Office
Prior art keywords
arm
balance beam
roller
spool
contact pressure
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
EP89112461A
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German (de)
French (fr)
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EP0351672A1 (en
Inventor
Silvan Borer
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.)
SSM Schaerer Schweiter Mettler AG
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SSM Schaerer Schweiter Mettler AG
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Priority to AT89112461T priority Critical patent/ATE95505T1/en
Publication of EP0351672A1 publication Critical patent/EP0351672A1/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
    • B65H54/40—Arrangements for rotating packages
    • B65H54/52—Drive contact pressure control, e.g. pressing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/50—Diminishing, minimizing or reducing
    • B65H2601/52—Diminishing, minimizing or reducing entities relating to handling machine
    • B65H2601/524—Vibration
    • 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 device for regulating the contact pressure in a bobbin winder between a bobbin to be wound onto a yarn carrier and a roller according to the preamble of claim 1.
  • a bobbin winder in which a thread is wound onto a thread carrier, it is known to drive the bobbin with the aid of a drive cylinder or a grooved drum acting on the outer circumference of the bobbin.
  • the thread carrier of the bobbin is usually rotatably mounted in a pivotable or displaceable bobbin frame. During the winding, the bobbin lies against the driven roller and is set in rotation by this in the frictional connection. Since the winding of the thread to the bobbin should enable good unwinding, it is desirable that the bobbin be carried along without slippage. For this reason, it is known to press the coil against the contact roller with a specific contact pressure.
  • the bobbin is arranged above a roller and with its yarn carrier in a pivotable Coil frame held.
  • the winding frame is designed so that its center of gravity is at a distance from the pivot axis of the winding bracket, so that the weight of the winding bracket presses on the contact roller.
  • the bobbin hinge swivels into a position in which the distance from the center of gravity to the axis of rotation of the bobbin winder becomes smaller and smaller.
  • the force of the weight of the bobbin bar which is thereby becoming ever smaller and pushing on the contact roller, is replaced by the weight of the bobbin.
  • the center of gravity of the bobbin moves from the distance zero to the axis of rotation of the bobbin on the opposite side, so that as the bobbin diameter increases, a counterforce arises in the sense of relieving the contact roller of the bobbin weight.
  • the contact pressure of the coil on the contact roller can be controlled.
  • the desired contact pressure can only be achieved approximately, since this is dependent on the geometry of the coil frame and the coil stroke (coil shape), but also on the coil density.
  • the coil is arranged laterally to a roller and pressed against the roller by springs.
  • two sets of springs working against each other are usually used, with which the desired contact pressure is to be maintained. But even with this embodiment, the desired contact pressure can only be approximately maintained.
  • the winding frame is not pivotally mounted about an axis of rotation, but as Linear guide trained. If the spool is arranged laterally to the roller, a constant contact pressure of the spool against the roller can be achieved with the aid of a weight guided over a roller. With this embodiment, the desired contact pressure can be maintained very precisely, but the linear guide is a relatively complex solution, which makes it difficult to replace the coil. In particular, an arrangement of the coil in any position relative to the contact roller is not possible.
  • WO-A-8 301 610 a generic device for regulating the contact pressure in a winding machine between a bobbin to be wound on a yarn carrier and a roller is known, in which the bobbin is mounted on a pivotable arm and presses against a machine-mounted roller .
  • the arm is connected to a piston, which is guided in a pressure cylinder, which in turn is controlled by a control device based on the pressure or torque exerted by the coil on the roller in such a way that the contact pressure maintains a setpoint.
  • Such a device allows precise control of the contact pressure, however, only with a high level of constructional and control-related effort.
  • the invention is therefore based on the object of specifying a generic device which is structurally simple and robust.
  • the contact pressure is controlled by a device that works on the principle of the scale, the control device being exempt from direct control of the contact pressure and only having to ensure that the scale-like device that regulates the contact pressure is not significantly disturbed is, in particular the balance beam is essentially held in a target position with increasing coil diameter. Since even a relatively large deviation of the position of the balance beam from the nominal position only causes a slight change in the contact pressure, the technical control conditions are considerably more favorable than in known devices, so that high accuracy is achieved can be achieved with little technical effort. This effect can be enhanced by a suitable choice of the lengths of the two arms of the balance beam.
  • the device shown in Fig. 1 has a roller 1, which is designed as a contact roller, drive roller or grooved drum. Above the roller 1, a bobbin 2 is arranged, which is formed by winding a thread (not shown) on a thread carrier (not shown).
  • the yarn carrier is mounted in a winding frame which is pivotally mounted about an axis of rotation 3 and of which an arm 4 is shown in FIG. 1. It is also possible to design the winding frame as a linear guide, which is displaceably guided on a column 22, see FIG. 2.
  • the roller 1 and the winding frame are parts of a winding machine, as are used in various known designs for winding bobbins in the spurs and in the spinning mill.
  • the roller 1 is rotatably mounted on a balance beam 6, which is pivotable about a swivel joint 7 and has two arms 8, 9, of which one arm 8 is arranged on one side of the swivel joint 7 and carries the roller 1 during which the opposite side of the hinge 7 lying other arm 9 carries a displaceable weight 10.
  • the other arm 9 has a substantially greater length than the one arm 8 on which the roller 1 is mounted.
  • a damping device 12 is coupled to the balance beam 6, the function of which is to dampen vibrations on the balance beam 6.
  • the damping device 12 can be a mechanical, hydraulic or pneumatic throttle element, by means of which rapid movements of the balance beam 12 are braked and which is known in various designs.
  • Fig. 1 only one hinge 7 is visible on one side of the roller 1.
  • the roller 1 can also be mounted on its two sides in rotary joints 7.
  • the embodiment in which the roller 1 is supported on one side in a machine-fixed bearing and is supported only on the other side in the one arm 8 of the balance beam 6 is particularly simple.
  • a sensor 13 is arranged, which detects deviations of the balance beam 6 from its desired position and generates a corresponding signal which is fed via a line 15 to a controller 14, in which a signal of an actuating device is fed via a line 16 17 is supplied.
  • the adjusting device 17 engages on the arm 4 of the winding frame and adjusts the winding frame in such a way that the balance beam 6 moves against its desired position.
  • the adjusting device 17 is designed in FIG. 1 as a spindle drive, in which a spindle nut 18 is connected to the arm 4, a spindle 20 cooperating with the spindle nut 18, which spindle 20 being driven by a motor 21.
  • the motor 21 is controlled by the controller 14 via the line 16, as a result of which the adjusting device 17 either loads or relieves the coil 2 in the sense of correcting the position of the balance beam 6 against its desired position.
  • the sensor 13, the controller 14 and the adjusting device 17 form a control circuit with which the contact pressure of the coil 2 on the roller 1 can be maintained very precisely. This is favored by a particularly large length of the other arm 9 of the balance beam 6 compared to the one arm 8.
  • the device shown in FIG. 2 is somewhat similar to that of FIG. 1.
  • the contact pressure is regulated by a control circuit, which is composed of the balance beam 6 with the displaceable weight 10, the sensor 13 and the adjusting device 17 with the spindle nut 18.
  • the spindle 20 and the spindle motor 21 is composed.
  • FIG. 3 shows a further device for regulating the contact pressure of a coil 2 on a roller 1.
  • the roller 1 is mounted on the balance beam 6, which is supported on the swivel joint 7, as in the device according to FIG. 1.
  • the spool 2 is mounted in the pivotable spool frame with the arm 4.
  • the coil frame is also biased by a spring 23 in such a way that it acts to reduce the contact pressure of the coil 2.
  • the balance beam 6 is mechanically coupled to the adjusting device 17, which is designed as a step mechanism.
  • the adjusting device 17 essentially consists of a clamping device 24 and a connecting strap 27, which is coupled to the end of the longer arm 9 of the balance beam 6.
  • the actuating rod 30 is articulated on the arm 4 of the spool frame by means of a swivel joint 31.
  • FIG. 4 shows that the clamping device 25 is a hydraulic system 32 that is actuated by the balance beam 6.
  • a piston 33 is articulated, which cooperates with a cylinder 34.
  • a pressure line 35 leads from the cylinder 34 to a cylinder 36 in which a clamping piston 37 is guided.
  • the clamping piston 37 presses on the adjusting rod 30 and forms the clamping device 24 with the clamping roller 28.
  • the devices described are characterized in that the contact pressure can be maintained regardless of the specific weight of the coil, the coil shape (coil stroke and biconus) and the geometry of the coil frame.
  • the contact pressure is precisely adjustable, and the setting of the contact pressure can be carried out easily and simply. No previous calibration is necessary either, since the contact pressure can be adjusted by moving a relatively small weight 10.
  • a change in the contact pressure during winding is desired, this can be done with a simple addition.
  • the weight 10 is attached to a sliding sleeve 41, while on the top of the sliding sleeve 41 a button 42 is attached with a feeler roller.
  • a link 44 is arranged on the arm 4, along which the feeler roller 43 moves during winding and thereby moves the weight 10 on the balance beam 6.
  • Such devices for changing the contact pressure can of course also be arranged on the embodiments according to FIGS. 2-4.
  • the devices described can also be retrofitted to existing winding machines, since no specific arrangement of the roller 1 and the spool 2 is required.

Landscapes

  • Warping, Beaming, Or Leasing (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Winding Filamentary Materials (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Crushing And Grinding (AREA)
  • Fixing For Electrophotography (AREA)

Abstract

The bearing pressure exerted onto the roller (1) during the winding of a bobbin (2) is controlled by means of a control device in which the roller (1) is mounted on a balance arm (6). The deviation of the balance arm (6) from its desired position is determined by a sensor (13) and converted in a controller (14) into a correcting movement of an adjusting device (17). The adjusting device (17) is a spindle drive having a spindle nut (18) and a spindle (20), the motor (21) of which is controlled by the controller (14). By means of the control device, which is designed as an automatic control sytem, the bearing pressure can be maintained very exactly during the entire winding operataion irrespective of the specific weight of the bobbin (2). <IMAGE>

Description

Die Erfindung betrifft ein Vorrichtung zur Regelung der Anpresskraft in einer Spulmaschine zwischen einer auf einen Garnträger aufzuwickelnden Spule und einer Walze gemäss dem Oberbegriff der Anspruchs 1.The invention relates to a device for regulating the contact pressure in a bobbin winder between a bobbin to be wound onto a yarn carrier and a roller according to the preamble of claim 1.

Bei einer Spulmaschine, bei welcher ein Faden auf einen Garnträger aufgewickelt wird, ist es bekannt, mit Hilfe eines an dem Aussenumfang der Spule angreifenden Treibzylinders oder einer Nutentrommel die Spule anzutreiben. Der Garnträger der Spule ist hierbei gewöhnlich in einem schwenkbaren oder verschiebbaren Spulrahmen drehbar gelagert. Während des Aufwickelns liegt die Spule an der angetriebenen Walze an und wird durch diese im Reibungsschluss in Drehung versetzt. Da das Aufwickeln des Fadens zur Spule ein gutes Abwickeln ermöglichen soll, ist es erwünscht, dass die Mitnahme der Spule ohne Schlupf erfolgt. Aus diesem Grunde ist es bekannt, die Spule mit einer bestimmten Anpresskraft an die Anlagewalze anzudrücken.In a bobbin winder in which a thread is wound onto a thread carrier, it is known to drive the bobbin with the aid of a drive cylinder or a grooved drum acting on the outer circumference of the bobbin. The thread carrier of the bobbin is usually rotatably mounted in a pivotable or displaceable bobbin frame. During the winding, the bobbin lies against the driven roller and is set in rotation by this in the frictional connection. Since the winding of the thread to the bobbin should enable good unwinding, it is desirable that the bobbin be carried along without slippage. For this reason, it is known to press the coil against the contact roller with a specific contact pressure.

Bei einer bekannten Ausführungsform ist die Spule oberhalb einer Walze angeordnet und mit seinem Garnträger in einem schwenkbaren Spulrahmen gehalten. Der Spulrahmen ist hierbei so ausgebildet, dass sein Schwerpunkt einen Abstand zur Schwenkachse des Spulbügels aufweist, so dass das Gewicht des Spulbügels auf die Anlagewalze drückt. Mit grösserwerdendem Durchmesser der Spule schwenkt der Spulbügel in eine Lage, bei welcher der Abstand des Schwerpunktes zur Drehachse des Spulbügels immer kleiner wird. Die dadurch immer kleinerwerdende, auf die Anlagewalze drückende Kraft durch das Gewicht des Spulbügels wird durch das grösserwerdende Gewicht der Spule ersetzt. Bei noch grösserwerdendem Durchmesser der Spule bewegt sich der Schwerpunkt des Spulbügels vom Abstand Null zur Drehachse des Spulbügels auf die entgegengesetzte Seite, so dass mit grösserwerdendem Spulendurchmesser eine Gegenkraft im Sinne einer Entlastung der Anlagewalze vom Spulengewicht entsteht. Auf diese Weise kann die Anpresskraft der Spule auf die Anlagewalze gesteuert werden. Mit dieser Ausführungsform kann jedoch die gewünschte Anpresskraft nur annähernd erreicht werden, da dieser von der Geometrie des Spulrahmens und des Spulenhubs (Spulenform), aber auch von der Spulendichte abhängig ist.In a known embodiment, the bobbin is arranged above a roller and with its yarn carrier in a pivotable Coil frame held. The winding frame is designed so that its center of gravity is at a distance from the pivot axis of the winding bracket, so that the weight of the winding bracket presses on the contact roller. As the diameter of the bobbin increases, the bobbin hinge swivels into a position in which the distance from the center of gravity to the axis of rotation of the bobbin winder becomes smaller and smaller. The force of the weight of the bobbin bar, which is thereby becoming ever smaller and pushing on the contact roller, is replaced by the weight of the bobbin. If the diameter of the bobbin increases, the center of gravity of the bobbin moves from the distance zero to the axis of rotation of the bobbin on the opposite side, so that as the bobbin diameter increases, a counterforce arises in the sense of relieving the contact roller of the bobbin weight. In this way, the contact pressure of the coil on the contact roller can be controlled. With this embodiment, however, the desired contact pressure can only be achieved approximately, since this is dependent on the geometry of the coil frame and the coil stroke (coil shape), but also on the coil density.

Weiter ist es bekannt, die Anpresskraft der Spule an die Walze durch ein an dem Spulrahmen angeordnetes Gegengewicht zu beeinflussen. Aber auch mit dieser Ausführung ist ein genaues Einhalten einer bestimmten Anpresskraft praktisch nicht erreichbar.It is also known to influence the pressing force of the bobbin on the roller by means of a counterweight arranged on the bobbin frame. But even with this version, it is practically impossible to maintain a specific contact pressure.

Bei einer dritten bekannten Ausführungsform wird die Spule seitlich zu einer Walze angeordnet und durch Federn an die Walze gedrückt. Es werden hierbei meist zwei gegeneinanderwirkende Federsätze verwendet, mit welchen die gewünschte Anpresskraft eingehalten werden soll. Aber auch mit dieser Ausführungsform kann die gewünschte Anpresskraft nur angenähert eingehalten werden.In a third known embodiment, the coil is arranged laterally to a roller and pressed against the roller by springs. In this case, two sets of springs working against each other are usually used, with which the desired contact pressure is to be maintained. But even with this embodiment, the desired contact pressure can only be approximately maintained.

Bei einer weiteren bekannten Ausführungsform ist der Spulrahmen nicht um eine Drehachse schwenkbar gelagert, sondern als Linearführung ausgebildet. Wird die Spule seitlich zur Walze angeordnet, kann mit Hilfe eines über eine Rolle geführten Gewichtes eine konstante Anpresskraft der Spule an die Walze erreicht werden. Mit dieser Ausführungsform kann zwar die gewünschte Anpresskraft recht genau eingehalten werden, jedoch ist die Linearführung eine verhältnismässig aufwendige Lösung, durch welche das Auswechseln der Spule erschwert wird. Insbesondere ist eine Anordnung der Spule in einer beliebigen Lage zur Anlagewalze nicht möglich.In a further known embodiment, the winding frame is not pivotally mounted about an axis of rotation, but as Linear guide trained. If the spool is arranged laterally to the roller, a constant contact pressure of the spool against the roller can be achieved with the aid of a weight guided over a roller. With this embodiment, the desired contact pressure can be maintained very precisely, but the linear guide is a relatively complex solution, which makes it difficult to replace the coil. In particular, an arrangement of the coil in any position relative to the contact roller is not possible.

Weiters ist aus der WO-A-8 301 610 eine gattungsgemässe Vorrichtung zur Regelung der Anpresskraft in einer Spulmaschine zwischen einer auf einen Garnträger aufzuwickelnden Spule und einer Walze bekannt, bei welcher die Spule an einem schwenkbaren Arm gelagert ist und gegen eine maschinenfest gelagerte Walze drückt. Zur Regelung des Anpressdrucks ist der Arm mit einem Kolben verbunden, welcher in einem Druckzylinder geführt ist, der wiederum von einer Regeleinrichtung aufgrund des von der Spule auf die Walze ausgeübten Drucks oder Drehmoments so gesteuert wird, dass der Anpressdruck einen Sollwert einhält.Furthermore, from WO-A-8 301 610 a generic device for regulating the contact pressure in a winding machine between a bobbin to be wound on a yarn carrier and a roller is known, in which the bobbin is mounted on a pivotable arm and presses against a machine-mounted roller . To regulate the contact pressure, the arm is connected to a piston, which is guided in a pressure cylinder, which in turn is controlled by a control device based on the pressure or torque exerted by the coil on the roller in such a way that the contact pressure maintains a setpoint.

Eine derartige Einrichtung erlaubt eine präzise Steuerung des Anpressdrucks jedoch nur bei hohem konstruktivem und regelungstechnischem Aufwand.Such a device allows precise control of the contact pressure, however, only with a high level of constructional and control-related effort.

Der Erfindung liegt daher die Aufgabe zugrunde, eine gattungsgemässe Vorrichtung anzugeben, welche konstruktiv einfach und robust ist.The invention is therefore based on the object of specifying a generic device which is structurally simple and robust.

Diese Aufgabe wird durch die Erfindung, wie sie in den Ansprüchen gekennzeichnet ist, gelöst.This object is achieved by the invention as characterized in the claims.

Gemäss der Erfindung wird der Anpressdruck durch eine Vorrichtung gesteuert, die nach dem Prinzip der Waage funktioniert, wobei die Regeleinrichtung von der unmittelbaren Steuerung des Anpressdrucks befreit ist und nur dafür zu sorgen braucht, dass die waagenartige Vorrichtung, die den Anpressdruck regelt, nicht wesentlich gestört wird, insbesondere der Waagebalken bei sich vergrösserndem Spulendurchmesser im wesentlichen in einer Sollage gehalten wird. Da selbst eine verhältnismässig grosse Abweichung der Lage des Waagebalkens von der Sollage nur eine geringe Aenderung des Anpressdrucks bewirkt, sind die regeltechnischen Verhältnisse wesentlich günstiger als bei bekannten Vorrichtungen, sodass hohe Genauigkeit bei geringem regeltechnischem Aufwand erreicht werden kann. Diese Wirkung kann durch eine geeignete Wahl der Längen der beiden Arme des Waagebalkens verstärkt werden.According to the invention, the contact pressure is controlled by a device that works on the principle of the scale, the control device being exempt from direct control of the contact pressure and only having to ensure that the scale-like device that regulates the contact pressure is not significantly disturbed is, in particular the balance beam is essentially held in a target position with increasing coil diameter. Since even a relatively large deviation of the position of the balance beam from the nominal position only causes a slight change in the contact pressure, the technical control conditions are considerably more favorable than in known devices, so that high accuracy is achieved can be achieved with little technical effort. This effect can be enhanced by a suitable choice of the lengths of the two arms of the balance beam.

Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und nachfolgend beschrieben. Es zeigen:

Fig. 1
eine Vorrichtung zur Regelung des Auflagedruckes einer Spule an eine Walze, bei welcher der Auflagedruck durch einen Regelkreis während des Aufwickelns der Spule geregelt wird,
Fig. 2
Eine Variante der Vorrichtung nach Fig. 1, bei welcher die Walze an einer an einer Säule geführten Linearführung montiert ist,
Fig. 3
eine weitere Ausführungsform der Vorrichtung zur Regelung des Auflagedruckes einer Spule an eine Walze, bei welcher mit einem Schrittmechanismus die Regelung des Auflagedruckes der Spule an die Walze erfolgt, und
Fig. 4
eine Teilansicht der Vorrichtung nach Fig. 3 mit einem hydraulischen Uebertragungssystem.
Embodiments of the invention are shown in the drawing and described below. Show it:
Fig. 1
a device for regulating the contact pressure of a spool on a roller, in which the contact pressure is regulated by a control circuit during the winding of the spool,
Fig. 2
1, in which the roller is mounted on a linear guide guided on a column,
Fig. 3
a further embodiment of the device for regulating the contact pressure of a spool on a roller, in which the stepping mechanism is used to regulate the contact pressure of the spool on the roller, and
Fig. 4
a partial view of the device of FIG. 3 with a hydraulic transmission system.

Die in Fig. 1 dargestellte Vorrichtung weist eine Walze 1 auf, welche als Anlagewalze, Treibwalze oder Nutentrommel ausgebildet ist. Ueber der Walze 1 ist eine Spule 2 angeordnet, die durch Aufwickeln eines (nicht dargestellten) Fadens auf einen (nicht dargestellten) Garnträger gebildet wird. Der Garnträger ist in einem Spulrahmen gelagert, welcher um eine Drehachse 3 schwenkbar gelagert ist und von welchem ein Arm 4 in Fig. 1 dargestellt ist. Es ist auch möglich, den Spulrahmen als Linearführung auszubilden, die an einer Säule 22, siehe Fig. 2, verschiebbar geführt ist. Die Walze 1 und der Spulrahmen sind Teile einer Spulmaschine, wie sie zum Wickeln von Spulen in den Vorwerken und in der Spinnerei in verschiedenen bekannten Ausführungen verwendet werden.The device shown in Fig. 1 has a roller 1, which is designed as a contact roller, drive roller or grooved drum. Above the roller 1, a bobbin 2 is arranged, which is formed by winding a thread (not shown) on a thread carrier (not shown). The yarn carrier is mounted in a winding frame which is pivotally mounted about an axis of rotation 3 and of which an arm 4 is shown in FIG. 1. It is also possible to design the winding frame as a linear guide, which is displaceably guided on a column 22, see FIG. 2. The roller 1 and the winding frame are parts of a winding machine, as are used in various known designs for winding bobbins in the spurs and in the spinning mill.

Die Walze 1 ist an einem Waagebalken 6 drehbar gelagert, welcher um ein Drehgelenk 7 schwenkbar ist und zwei Arme 8, 9 aufweist, von denen der eine Arm 8 auf der einen Seite des Drehgelenkes 7 angeordnet ist und die Walze 1 trägt, während der auf der entgegengesetzten Seite des Drehgelenkes 7 liegende andere Arm 9 ein verschiebbares Gewicht 10 trägt. Wie aus Fig. 1 ersichtlich ist, weist der andere Arm 9 eine wesentlich grössere Länge auf als der eine Arm 8, an dem die Walze 1 gelagert ist.The roller 1 is rotatably mounted on a balance beam 6, which is pivotable about a swivel joint 7 and has two arms 8, 9, of which one arm 8 is arranged on one side of the swivel joint 7 and carries the roller 1 during which the opposite side of the hinge 7 lying other arm 9 carries a displaceable weight 10. As can be seen from FIG. 1, the other arm 9 has a substantially greater length than the one arm 8 on which the roller 1 is mounted.

Am Waagebalken 6 ist eine Dämpfungseinrichtung 12 angekuppelt, deren Aufgabe die Dämpfung von Vibrationen am Waagebalken 6 ist. Die Dämpfungseinrichtung 12 kann ein mechanisches, hydraulisches oder pneumatisches Drosselelement sein, durch welches schnelle Bewegungen des Waagebalkens 12 gebremst werden und das in verschiedenen Ausführungen bekannt ist.A damping device 12 is coupled to the balance beam 6, the function of which is to dampen vibrations on the balance beam 6. The damping device 12 can be a mechanical, hydraulic or pneumatic throttle element, by means of which rapid movements of the balance beam 12 are braked and which is known in various designs.

In Fig. 1 ist nur ein Drehgelenk 7 auf der einen Seite der Walze 1 sichtbar. Die Walze 1 kann aber auch an ihren beiden Seiten in Drehgelenken 7 gelagert sein. Besonders einfach ist jedoch die Ausführungsform, bei welcher die Walze 1 auf der einen Seite in einer maschinenfesten Lagerung gelagert und nur auf der anderen Seite in dem einen Arm 8 des Waagebalkens 6 abgestützt ist.In Fig. 1, only one hinge 7 is visible on one side of the roller 1. The roller 1 can also be mounted on its two sides in rotary joints 7. However, the embodiment in which the roller 1 is supported on one side in a machine-fixed bearing and is supported only on the other side in the one arm 8 of the balance beam 6 is particularly simple.

Am Ende des anderen Armes 9 ist ein Sensor 13 angeordnet, der Abweichungen des Waagebalkens 6 von seiner Soll-Lage feststellt und ein entsprechendes Signal erzeugt, das über eine Leitung 15 einem Regler 14 zugeführt wird, in welchem über eine Leitung 16 ein Signal einer Stellvorrichtung 17 zugeführt wird. Die Stellvorrichtung 17 greift am Arm 4 des Spulrahmens an und verstellt den Spulrahmen derart, dass der Waagebalken 6 sich gegen seine Soll-Lage bewegt. Die Stellvorrichtung 17 ist in Fig. 1 als Spindeltrieb ausgebildet, bei welcher eine Spindelmutter 18 mit dem Arm 4 verbunden ist, wobei mit der Spindelmutter 18 eine Spindel 20 zusammenwirkt, die von einem Motor 21 angetrieben wird. Der Motor 21 wird vom Regler 14 über die Leitung 16 angesteuert, wodurch die Stellvorrichtung 17 die Spule 2 im Sinne einer Korrektur der Lage des Waagebalkens 6 gegen seine Soll-Lage entweder belastet oder entlastet.At the end of the other arm 9, a sensor 13 is arranged, which detects deviations of the balance beam 6 from its desired position and generates a corresponding signal which is fed via a line 15 to a controller 14, in which a signal of an actuating device is fed via a line 16 17 is supplied. The adjusting device 17 engages on the arm 4 of the winding frame and adjusts the winding frame in such a way that the balance beam 6 moves against its desired position. The adjusting device 17 is designed in FIG. 1 as a spindle drive, in which a spindle nut 18 is connected to the arm 4, a spindle 20 cooperating with the spindle nut 18, which spindle 20 being driven by a motor 21. The motor 21 is controlled by the controller 14 via the line 16, as a result of which the adjusting device 17 either loads or relieves the coil 2 in the sense of correcting the position of the balance beam 6 against its desired position.

Der Sensor 13, der Regler 14 und die Stellvorrichtung 17 bilden einen Regelkreis, mit dem der Anpressdruck der Spule 2 an die Walze 1 sehr genau eingehalten werden kann. Dies wird durch eine besonders grosse Länge des andern Armes 9 des Waagebalkens 6 gegenüber dem einen Arm 8 begünstigt.The sensor 13, the controller 14 and the adjusting device 17 form a control circuit with which the contact pressure of the coil 2 on the roller 1 can be maintained very precisely. This is favored by a particularly large length of the other arm 9 of the balance beam 6 compared to the one arm 8.

Die in Fig. 2 dargestellte Vorrichtung weist mit derjenigen nach Fig. 1 eine gewisse Aehnlichkeit auf. Die Regelung des Anpressdruckes erfolgt auch in diesem Fall durch einen Regelkreis, der sich aus dem Waagebalken 6 mit dem verschiebbaren Gewicht 10, dem Sensor 13 und der Stellvorichtung 17 mit der Spindelmutter 18, der Spindel 20 und dem Spindelmotor 21 zusammensetzt.The device shown in FIG. 2 is somewhat similar to that of FIG. 1. In this case, too, the contact pressure is regulated by a control circuit, which is composed of the balance beam 6 with the displaceable weight 10, the sensor 13 and the adjusting device 17 with the spindle nut 18. the spindle 20 and the spindle motor 21 is composed.

In Fig. 2 ist im weitern dargestellt, dass die Walze 1 über der Spule 2 am Waagebalken 6, welcher am an einer Säule 22 linear geführten Arm 4 montiert ist, gelagert ist, während die Spule 2 maschinenfest abgestützt ist. Auch mit dieser Anordnung der Anlagewalze 1 und der Spule 2 kann der Anpressdruck sehr genau geregelt werden. Die weiter in Fig. 2 verwendeten Bezugszeichen, die nicht näher erläutert sind, entsprechen denjenigen in Fig. 1.2 further shows that the roller 1 is mounted above the spool 2 on the balance beam 6, which is mounted on the arm 4 guided linearly on a column 22, while the spool 2 is supported on the machine. With this arrangement of the contact roller 1 and the coil 2, the contact pressure can be controlled very precisely. The reference symbols used further in FIG. 2, which are not explained in more detail, correspond to those in FIG. 1.

In Fig. 3 ist eine weitere Vorrichtung zur Regelung des Auflagedruckes einer Spule 2 an eine Walze 1 dargestellt. Bei dieser Vorrichtung ist die Walze 1 wie bei der Vorrichtung nach Fig. 1 am Waagebalken 6 gelagert, der auf dem Drehgelenk 7 abgestützt ist. Die Spule 2 ist im schwenkbaren Spulrahmen mit dem Arm 4 gelagert. Der Spulrahmen ist zudem durch eine Feder 23 derart vorgespannt, dass sie im Sinne einer Verminderung des Anlagedruckes der Spule 2 wirkt. Der Waagebalken 6 ist bei der Vorrichtung nach Fig. 3 mechanisch mit der Stellvorrichtung 17 gekuppelt, die als Schrittmechanismus ausgebildet ist. Die Stellvorrichtung 17 setzt sich im wesentlichen aus einer Klemmvorrichtung 24 und aus einer Verbindungslasche 27 zusammen, die mit dem Ende des längeren Armes 9 des Waagebalkens 6 gekuppelt ist. Der um eine Drehachse 26 schwenkbare Klemmhebel 25 bildet zusammen mit einer Klemmrolle 28 die Klemmvorrichtung 24, mit welcher eine Stellstange 30 geklemmt und schrittweise freigegeben wird. Die Stellstange 30 ist mittels eines Drehgelenkes 31 am Arm 4 des Spulrahmens angelenkt.3 shows a further device for regulating the contact pressure of a coil 2 on a roller 1. In this device, the roller 1 is mounted on the balance beam 6, which is supported on the swivel joint 7, as in the device according to FIG. 1. The spool 2 is mounted in the pivotable spool frame with the arm 4. The coil frame is also biased by a spring 23 in such a way that it acts to reduce the contact pressure of the coil 2. In the device according to FIG. 3, the balance beam 6 is mechanically coupled to the adjusting device 17, which is designed as a step mechanism. The adjusting device 17 essentially consists of a clamping device 24 and a connecting strap 27, which is coupled to the end of the longer arm 9 of the balance beam 6. The clamping lever 25, which can be pivoted about an axis of rotation 26, together with a clamping roller 28, forms the clamping device 24 with which an adjusting rod 30 is clamped and released step by step. The actuating rod 30 is articulated on the arm 4 of the spool frame by means of a swivel joint 31.

Die Vorrichtung nach Fig. 3 arbeitet wie folgt:
Mit dem Aufwickeln des Fadens auf die Spule 2 wächst der Durchmesser der Spule und drückt deswegen stärker auf die Anlagewalze 1. Dadurch wird der Arm 9 des Waagebalkens 6 angehoben, wodurch der Klemmhebel 25 in eine Lage geschwenkt wird, in welcher er die Stellstange 30 freigibt. Durch die vorgespannte Feder 23 wird nun der Spulbügel solange angehoben, bis der Druck auf die Anlagewalze soweit verkleinert ist, dass der Waagebalken 6 wieder in seine Soll-Lage schwenkt, womit aber auch gleichzeitig die Stellstange 30 wieder durch den Klemmhebel 25 festgeklemmt wird. Die Regelung des Auflagedruckes erfolgt somit in kleinen Schritten, welchen immer eine Auslenkung des Waagebalkens 6 aus seiner Soll-Lage vorangeht. Diese Schritte können jedoch so klein gehalten werden, dass praktisch ein konstanter Auflagedruck der Spule 2 eingehalten werden kann.3 operates as follows:
When the thread is wound onto the bobbin 2, the diameter of the bobbin increases and therefore presses more strongly on the contact roller 1. As a result, the arm 9 of the balance beam 6 is raised, as a result of which the clamping lever 25 is pivoted into a position in which it releases the adjusting rod 30 . The pre-tensioned spring 23 now raises the winding bracket until the pressure on the contact roller is reduced to such an extent that the balance beam 6 swivels back into its desired position, but at the same time the adjusting rod 30 is clamped again by the clamping lever 25. The control of the contact pressure is thus carried out in small steps, which are always preceded by a deflection of the balance beam 6 from its target position. However, these steps can be kept so small that practically a constant contact pressure of the coil 2 can be maintained.

In Fig. 4 ist dargestellt, dass die Klemmvorrichtung 25 ein hydraulisches System 32 ist, das durch den Waagebalken 6 betätigt wird. Zu diesem Zweck ist am Ende des Armes 9, von dem nur ein Teil dargestellt ist, ein Kolben 33 angelenkt, der mit einem Zylinder 34 zusammenwirkt. Vom Zylinder 34 führt eine Druckleitung 35 zu einem Zylinder 36, in welchem ein Klemmkolben 37 geführt ist. Der Klemmkolben 37 drückt auf die Stellstange 30 und bildet mit der Klemmrolle 28 die Klemmvorrichtung 24.FIG. 4 shows that the clamping device 25 is a hydraulic system 32 that is actuated by the balance beam 6. For this purpose, at the end of the arm 9, of which only a part is shown, a piston 33 is articulated, which cooperates with a cylinder 34. A pressure line 35 leads from the cylinder 34 to a cylinder 36 in which a clamping piston 37 is guided. The clamping piston 37 presses on the adjusting rod 30 and forms the clamping device 24 with the clamping roller 28.

Schwenkt die Walze 1 durch das grösserwerdende Gewicht der Spule 2 mit seinem Arm 9 aufwärts, wird der Druck in der Druckleitung 35 entlastet, wodurch die Klemmvorrichtung 24 die Stellstange 30 solange freigibt, bis der Arm 9 seine Soll-Lage wieder eingenommen hat und dadurch die Stellstange 30 wieder festgeklemmt wird. Es wäre aber auch möglich, das hydraulische System 32 durch ein pneumatisches System zu ersetzen.If the roller 1 swivels upward with its arm 9 due to the increasing weight of the coil 2, the pressure in the pressure line 35 relieved, whereby the clamping device 24 releases the actuating rod 30 until the arm 9 has returned to its desired position and the actuating rod 30 is thereby clamped again. However, it would also be possible to replace the hydraulic system 32 with a pneumatic system.

Die beschriebenen Vorrichtungen zeichnen sich dadurch aus, dass der Auflagedruck unabhängig vom spezifischen Gewicht der Spule, der Spulenform (Spulenhub und Bikonus) und der Geometrie des Spulrahmens eingehalten werden kann. Der Auflagedruck ist hierbei genau einstellbar, wobei die Einstellung des Auflagedruckes leicht und einfach vorgenommen werden kann. Es ist auch keine vorherige Eichung erforderlich, da der Auflagedruck durch Verschieben eines verhältnismässig kleinen Gewichtes 10 eingestellt werden kann.The devices described are characterized in that the contact pressure can be maintained regardless of the specific weight of the coil, the coil shape (coil stroke and biconus) and the geometry of the coil frame. The contact pressure is precisely adjustable, and the setting of the contact pressure can be carried out easily and simply. No previous calibration is necessary either, since the contact pressure can be adjusted by moving a relatively small weight 10.

Wird eine Aenderung des Auflagedruckes während des Aufwickelns gewünscht, kann dies mit einem einfachen Zusatz gut bewerkstelligt werden. Dies ist in Fig. 1 dargestellt. Das Gewicht 10 ist hierbei an einer Schiebehülse 41 angehängt, während auf der Oberseite der Schiebehülse 41 ein Taster 42 mit einer Tastrolle befestigt ist. Am Arm 4 ist eine Kulisse 44 angeorndet, längs welcher sich die Tastrolle 43 während des Aufwickelns bewegt und hierbei das Gewicht 10 auf dem Waagebalken 6 verschiebt. Solche Einrichtungen zur Aenderung des Auflagedruckes können natürlich auch an den Ausführungen nach Fig. 2 - 4 angeordnet werden.If a change in the contact pressure during winding is desired, this can be done with a simple addition. This is shown in Fig. 1. The weight 10 is attached to a sliding sleeve 41, while on the top of the sliding sleeve 41 a button 42 is attached with a feeler roller. A link 44 is arranged on the arm 4, along which the feeler roller 43 moves during winding and thereby moves the weight 10 on the balance beam 6. Such devices for changing the contact pressure can of course also be arranged on the embodiments according to FIGS. 2-4.

Die beschriebenen Vorrichtungen lassen sich auch nachträglich an bestehenden Spulmaschinen anbringen, da keine bestimmte Anordnung der Walze 1 und der Spule 2 erforderlich ist.The devices described can also be retrofitted to existing winding machines, since no specific arrangement of the roller 1 and the spool 2 is required.

Claims (10)

  1. Device for regulating the contact pressure in a spooling machine between a spool (2) for winding on to a yarn carrier and a cylinder (1), having a regulating device (13-16; 24-28) which regulates the effective contact pressure between the spool (2) and the cylinder (1), characterised in that at least one end of the cylinder (1) is mounted on an arm (8) of a balance beam (6) pivotally suspended around a pivot link (7), while a weight (10) producing the downward pressure is displaceably mounted on the other arm (9) of the balance beam (6), this arm (9) being located on the other side of the pivot link (7), and in that regulation of the contact pressure takes place by adjustment of the distance between the axis of the spool (2) and the pivot link (7) of the balance beam (6) by means of the regulating device (13-16, 24-26) when the position of the balance beam (6) deviates from a desired position.
  2. Device according to claim 1, characterised in that the regulating device has a sensor (13) for detecting deviations in the position of the balance beam (6) from the desired position, and an actuator (17) which is driven by a motor (21) controlled by a controller (14).
  3. Device according to claim 1 or 2, characterised in that the balance beam (6) is mechanically stable and the spool (2) is mounted on a swivelling arm (4).
  4. Device according to claim 3, characterised in that the weight (10) is in contact, by means of a feeler (42), with a rocker arm (44) solidly connected to the arm (4) so that the rocker arm (44) is displaced along the balance beam (6) when the arm (4) swivels.
  5. Device according to claim 4, characterised in that the arm (4) is acted upon by a force acting in the sense to increase the distance between the axis of the spool (2) and the pivot link (7), and the regulating device is formed as a clamping device (24) acting upon an adjusting rod (30) which is connected to the arm (4) and which is released when the position of the balance beam (6) deviates from the desired position and is applied when the desired position is reached.
  6. Device according to claim 5, characterised in that the clamping device (24) has a clamping roller (28) and a clamping lever (25) between which the adjusting rod (30) is clamped, and the clamping lever (25) is connected to the balance beam (6) by way of a cover plate (27).
  7. Device according to claim 5, characterised in that the clamping device (24) has a cylinder (36) in which there is guided a clamping piston (37) acting on the adjusting rod (30) and which is connected by means of a pressure line (35) to a cylinder (34) in which there is guided a piston (33) coupled to the balance beam (6).
  8. Device according to one of claims 2 to 7, characterised in that the cylinder (1) is mounted in a mechanically stable manner on one side.
  9. Device according to claim 1 or 2, characterised in that the pivot link (7) of the balance beam (6) is mounted on a linear guide which can be displaced along an upright support (22) by means of the regulating device.
  10. Device according to one of claims 1 to 9, characterised in that the arm (9) of the balance beam (6) located opposite the other arm (8) of this balance beam has a substantially greater length than the said arm (8).
EP89112461A 1988-07-22 1989-07-07 Apparatus for controlling the bobbin pressure on a pressing roller Expired - Lifetime EP0351672B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89112461T ATE95505T1 (en) 1988-07-22 1989-07-07 DEVICE FOR CONTROLLING THE CONTACT PRESSURE OF A COIL ON A FEED ROLLER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2805/88A CH677918A5 (en) 1988-07-22 1988-07-22
CH2805/88 1988-07-22

Publications (2)

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EP0351672A1 EP0351672A1 (en) 1990-01-24
EP0351672B1 true EP0351672B1 (en) 1993-10-06

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EP89112461A Expired - Lifetime EP0351672B1 (en) 1988-07-22 1989-07-07 Apparatus for controlling the bobbin pressure on a pressing roller

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US (1) US5163631A (en)
EP (1) EP0351672B1 (en)
JP (1) JPH0270671A (en)
AT (1) ATE95505T1 (en)
CH (1) CH677918A5 (en)
DE (1) DE58905816D1 (en)
ES (1) ES2043973T3 (en)

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GB8927766D0 (en) * 1989-12-08 1990-02-14 Spt Machines Ltd Improvements in and relating to winding apparatus
IT1251858B (en) * 1991-09-24 1995-05-26 Riva Off Mec YARN COLLECTION MACHINE
JP2505140B2 (en) * 1991-12-05 1996-06-05 村田機械株式会社 Spinning winder
JPH05246622A (en) * 1992-03-02 1993-09-24 Koutsu Seisakusho:Kk Turret type thread-winding device
US5308008A (en) * 1992-03-18 1994-05-03 Rueegg Anton Method and apparatus for producing rolls
DE19515601A1 (en) * 1995-04-28 1996-10-31 Fritz Stahlecker Damper for winding bobbins
IT1305903B1 (en) * 1997-04-02 2001-05-21 Maf Spa Ora Valmet Rotomec S P DEVICE FOR DETECTION OF THE MUTUAL POSITION AND COMMAND-TRANSLATION OF SEVERAL MOBILE SEQUENTIAL ELEMENTS LONG ROUTES
DE19817363A1 (en) * 1998-04-18 1999-10-21 Schlafhorst & Co W Device for controlling the bobbin frame of a textile machine
DE19962296A1 (en) * 1999-12-23 2001-06-28 Schlafhorst & Co W Dishwasher
US6848151B2 (en) * 2003-03-31 2005-02-01 Invista Norh America S.à.r.l Air-jet method for producing composite elastic yarns
DE10348707A1 (en) * 2003-10-16 2005-05-12 Saurer Gmbh & Co Kg Device for the control of the contact pressure of a textile bobbin on a support or drive roller
EP1741655A1 (en) * 2005-07-08 2007-01-10 Schärer Schweiter Mettler AG Device for winding of yarns
CN102249118B (en) * 2011-06-30 2012-11-14 北京德厚朴化工技术有限公司 Press roll for filament winding head
CN103437003A (en) * 2013-08-07 2013-12-11 经纬纺织机械股份有限公司 Auxiliary pressurizing device for bobbin creel of rotor spinning machine
DE102017211467B3 (en) * 2017-07-05 2018-07-12 SSM Schärer Schweiter Mettler AG Winding device with support roller and contact pressure control device and thread processing machine
EP3798166B1 (en) * 2018-05-21 2024-09-25 TMT Machinery, Inc. Yarn winder
CH715345A1 (en) * 2018-09-18 2020-03-31 Ssm Schaerer Schweiter Mettler Ag Method of pivoting a bobbin in a winding device, and winding device.
CN109626078B (en) * 2019-02-02 2024-02-13 黄河科技学院 Spring mattress constant linear velocity rolling device

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WO1983001610A1 (en) * 1981-11-04 1983-05-11 Davies, Richard, Edward Improvements in or relating to winding apparatus

Also Published As

Publication number Publication date
US5163631A (en) 1992-11-17
EP0351672A1 (en) 1990-01-24
ATE95505T1 (en) 1993-10-15
CH677918A5 (en) 1991-07-15
DE58905816D1 (en) 1993-11-11
JPH0270671A (en) 1990-03-09
ES2043973T3 (en) 1994-01-01

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