EP0371214A1 - Spinning machine, in particular a ring-spinning or ring-twisting machine - Google Patents

Spinning machine, in particular a ring-spinning or ring-twisting machine Download PDF

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Publication number
EP0371214A1
EP0371214A1 EP89116744A EP89116744A EP0371214A1 EP 0371214 A1 EP0371214 A1 EP 0371214A1 EP 89116744 A EP89116744 A EP 89116744A EP 89116744 A EP89116744 A EP 89116744A EP 0371214 A1 EP0371214 A1 EP 0371214A1
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EP
European Patent Office
Prior art keywords
spindles
spinning machine
machine
machine according
ring
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.)
Withdrawn
Application number
EP89116744A
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German (de)
French (fr)
Inventor
Gerhard Dipl.-Ing. Grau
Hermann Dipl.-Ing. Güttler (FH)
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
Zinser Textilmaschinen GmbH
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Filing date
Publication date
Application filed by Zinser Textilmaschinen GmbH filed Critical Zinser Textilmaschinen GmbH
Publication of EP0371214A1 publication Critical patent/EP0371214A1/en
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/04—Spindles
    • D01H7/08—Mounting arrangements
    • D01H7/14—Holding-down arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/04—Spindles
    • D01H7/22—Braking arrangements
    • D01H7/2208—Braking arrangements using mechanical means
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/04—Spindles
    • D01H7/22—Braking arrangements
    • D01H7/2275—Braking arrangements using hydraulically or pneumatically operated brakes

Definitions

  • the invention relates to a spinning machine, in particular a ring spinning machine or ring twisting machine, with spindles arranged on both machine sides, each of which is provided with an individual electric motor.
  • the invention has for its object to improve a spinning machine of the type mentioned in such a way that the number of thread breaks is reduced when starting after a machine standstill or after a doffing.
  • the invention is based on the knowledge that after a stop, the spindles do not remain in the position that they assumed when they were stopped. In particular due to the thread tension and possibly also under the action of vibrations, the spindles rotate back, so that there is a loop or curl formation at least on some of the spin deln comes. This can lead to thread breaks at these spinning positions when moving off. This undesired and uncontrolled turning is prevented by the parking brakes assigned to the spindles, so that the number of thread breaks when starting can be significantly reduced.
  • a common actuating device is provided for the parking brakes of all spindles of at least one machine side.
  • the actuation of the parking brakes can thus be controlled centrally in the opposite direction to the switching on and off of the individual motors.
  • the spindles of a machine side are assigned an element running in the longitudinal direction of the machine, which element is provided with brake elements and is connected to an adjustment drive, by the adjustment of which the brake elements can be advanced to the spindles.
  • the forces to be applied by the adjustment drive are not too great, since only relatively small braking forces are required, which only have to prevent the spindles, which are no longer driven, from rotating against the respective thread tension.
  • a rod movably guided in the longitudinal direction of the machine is provided, to which the brake elements are attached. Such a rod can be accommodated in a space-saving manner.
  • tensile drives which can be activated alternately, act on both ends of the rod. As a result, the rod is only subjected to tensile forces, so that it can be dimensioned relatively thin.
  • hold-down devices are assigned to the spindles, which are arranged on movable holders and can be delivered to the spindles as braking elements by means of an adjustment drive.
  • Such hold-down devices are usually present in a ring spinning machine in order to prevent the spindles from being pulled out unintentionally. for example when changing the cop.
  • These hold-down devices are given an additional function by the adjustment drive engaging them, namely as a common parking brake that is used when the spinning machine is switched off.
  • the hold-down devices can be moved into a position releasing the spindles by means of an adjustment drive.
  • Such hold-down devices usually have to be moved out of the area of the spindle by hand in order to be able to pull the spindle out.
  • the above training makes it possible to move all hold-down devices out of the area of the spindles at the same time, so that they can be removed from their bearings for maintenance without an additional work step.
  • the spindles are assigned to at least one machine side a hose extending in the machine longitudinal direction, which is connected to a supply device for pressure medium and can be pressed onto the spindles by applying pressure medium. Since only relatively small braking forces are necessary, as already mentioned, a safe and reliable parking brake can be created for all spindles in this way. It is advantageous if the hose is laid in a pipe which is provided in the region of the spindles with cutouts which are open towards the spindles.
  • Fig. 1 shows a spindle (11) of a ring spinning machine or ring twisting machine which is driven by an electric single motor (10). Since single-motor drives of this type are known, a detailed representation of this single motor (10) can be dispensed with.
  • the individual motors (10) and the spindles (11) accommodated and stored in them are fastened to a spindle bench (13) running through in the machine longitudinal direction.
  • the spindle bench (13) has only been shown schematically in FIG. 1 as a rail running in the machine longitudinal direction. In practice, it can have other shapes, in particular the shape of a U-profile or another profile.
  • each spindle (11) is assigned a parking brake, which secures the spindles (11) against turning when the individual motors (10) are switched off.
  • the braking forces to be applied are relatively low, since they only compensate for the moment applied by the thread tension and do not have to bring the spindles (11) to a standstill from the barrel. They are only switched on at standstill or immediately before standstill.
  • a rod (15) extending in the longitudinal direction of the machine is provided, which is guided on a holder (14) attached to the spindle bank (13) in slide bearings (19), which are, for example, plastic profiles.
  • the rod (15) is provided with brake elements (16) which protrude into the area of the spindles (11) and which can be advanced to the spindles (11) by a longitudinal displacement of the rod (15).
  • holding sleeves (23) are attached to the rod (15) in the spindle division at appropriate intervals, to which leaf springs (24) are attached, which carry the brake pads (25) that can be delivered to the spindles (11) are.
  • a pneumatic drive is provided for the rod (15), by means of which the rod (15) is loaded in tension when it is adjusted in or out of the braking position.
  • the pistons are articulated by pneumatic presses (17, 18), which can be alternately acted upon by compressed air from a compressed air source (22) via an electromagnetic valve (21).
  • a compressed air source (22) via an electromagnetic valve (21).
  • the pneumatic press (18) is pressurized with compressed air while the press (17) is relaxed.
  • a latching device which holds the rod (15) with the brake elements (16) in the braking position with a predetermined latching force.
  • a locking element (31) is attached to the rod (15), into which a locking spring (33) engages with a nose. Only when this locking force is overcome by applying compressed air to the pneumatic press (17) can the rod (15) be moved back into the position in which the brake elements (16) are no longer active.
  • the released position of the parking brakes is secured by a corresponding latching, for which purpose a further latching element (31) is attached to the rod (15) and is assigned a latching spring (32) provided with a latching lug, which latches the rod (15) in the position stop, in which the braking elements (16) are released.
  • Fig. 3 an embodiment similar to Fig. 2 is shown, in which on the rod (15) at the distance corresponding to the spindle pitch sleeves (23) are attached, which are provided with leaf springs (34) which have a locking recess with which lock them against the spindles (11) in the braking position.
  • additional latching can be dispensed with.
  • the brake element (16) is a resilient brake arm (34) which is adapted in its end region to the spindle diameter.
  • brake wedges (35) are attached to the rod (15) as brake elements (16) in the spindle division at appropriate intervals, which are provided with a brake lining (36) in their area opposite the spindles (11). Since in this embodiment the braking elements (16) apply a force in the transverse direction to the rod (15), the off the rod (15), it is advisable to provide abutments (20).
  • a parking brake is provided for the spindles (11) of a machine side and contains as a braking element an elastic hose (29) which extends in the longitudinal direction of the machine and is arranged in the vicinity of the spindles (11).
  • the elastic hose (29) is sealed at one end with a clamping device.
  • a check valve (41) is arranged between the store (38) and the compressed air source (37).
  • the hose (29) is arranged within a tube (27) which is installed in a stationary manner and which contains cutouts (28) which are open towards the latter in the region of the spindles (11).
  • the memory (38) ensures that there is sufficient volume so that a braking effect is obtained even in the event of a slight leak over a longer period of inactivity. It should also be noted here that the braking forces that occur only have to be relatively low.
  • the elastic hose (29) is designed such that it springs out of the cutouts (28) due to its elasticity and serves as a parking brake for the spindles (11). This hose (29) is then connected to a vacuum source, so that it is contracted by applying a vacuum to such an extent that the braking effect is canceled.
  • a supply device (26) for supplying the hose (29) with compressed air a supply can also be provided
  • Direction for supplying a hydraulic medium can be provided, which is constructed accordingly.
  • the brake pads (25) are designed as hold-down devices, which are arranged in the operating position at a small radial distance from the spindle (11). Between the brake pads (25) serving as hold-down devices and the individual motor (10), a stop in the form of an annular collar (46) or an annular groove is provided on the spindle, in each of which the brake pad (25) engages without touching the spindle.
  • the brake pads (25) are arranged on holders designed as leaf springs (24) which project forward to the operating side of the machine, so that their ends (45) are accessible to an operator. The operator can thus swing out the brake pads (25) against the force of the leaf springs (24) out of the area of the spindles (11) so that they can also pull out the respective spindle upwards.
  • the holders (24) designed as leaf springs are arranged by means of holding sleeves (23) on a rod (15) which runs through the machine in the machine longitudinal direction on one side of the spindle and which are connected to a pneumatic press (17, 18) at the machine end.
  • a pneumatic press By actuating the pneumatic press (18), the parking brakes are actuated by pulling the rod towards one end of the machine in such a way that the brake pads (25) rest on the spindles (11).
  • Corresponding to the embodiment according to FIG pneumatic control which contains an electromagnetic valve (21).
  • There is also a Rastele on the rod (15) ment (31) is provided, in which the detent spring (33) engages with a nose and thus holds the rod (15) in the braking position.
  • the brake pads (25) serving as hold-down devices have only a relatively small radial distance from the spindles, which is smaller than the radial extent of the annular collar (46) (or the radial depth of an annular groove).
  • the rod (15) is brought into this operating position via the press (17) when the solenoid valve (21) is switched accordingly.
  • a first locking cam (48) of a spring (32) engages in a locking element (31) attached to the rod (15). So that this position is not passed when the press (17) is acted upon, an outlet (50) controlled by the piston of the press is provided in the cylinder of the press (17) so that it is released by the piston when the operating position is reached. Compressed air supplied escapes and does not move the piston.
  • the entire rod (15) with the brake pads (25) serving as hold-down devices can be adjusted into an inoperative position, in which the brake pads (25) lie outside the area of the spindles (11), so that these are pulled off upwards can.
  • This position can be reached in that the outlet (50) can be shut off by a further solenoid valve (47).
  • the outlet (50) is closed and compressed air supplied to the press (17) moves the piston of the press further into the end position in which the cam (49) of the detent spring (32) moves into the on the rod ( 15) arranged locking element (31) engages and fixes the device in the operating position.

Abstract

For a spinning machine, in particular a ring-spinning or ring- twisting machine, having spindles on both sides of the machine, each spindle being provided with an individual electric motor, it is proposed that the spindles have allocated to them holding brakes (24, 25) which stop the spindles (11) from turning when the individual motors are switched off. <IMAGE>

Description

Die Erfindung betrifft eine Spinnereimaschine, insbesondere ei­ne Ringspinnmaschine oder Ringzwirnmaschine, mit auf beiden Ma­schinenseiten angeordneten Spindeln,die jeweils mit einem elek­trischen Einzelmotor versehen sind.The invention relates to a spinning machine, in particular a ring spinning machine or ring twisting machine, with spindles arranged on both machine sides, each of which is provided with an individual electric motor.

Im Versuchsbetrieb mit derartigen Maschinen hat sich gezeigt, daß bei einem Anfahren nach einem Doffen oder einem Maschinen­stillstand die Anzahl der Fadenbrüche gegenüber konventionellen Maschinen wesentlich erhöht ist.In test operation with such machines, it has been shown that the number of thread breaks is significantly increased compared to conventional machines when starting after a doffing or a machine standstill.

Der Erfindung liegt die Aufgabe zugrunde, eine Spinnereimaschi­ne der eingangs genannten Art so zu verbessern, daß bei einem Anfahren nach einem Maschinenstillstand oder nach einem Doffen die Anzahl der Fadenbrüche reduziert ist.The invention has for its object to improve a spinning machine of the type mentioned in such a way that the number of thread breaks is reduced when starting after a machine standstill or after a doffing.

Diese Aufgabe wird dadurch gelöst, daß den Spindeln sie bei ab­geschalteten Einzelmotoren gegen Verdrehen sichernde Feststell­bremsen zugeordnet sind.This object is achieved in that the spindles are assigned parking brakes that prevent twisting when the individual motors are switched off.

Die Erfindung geht von der Erkenntnis aus,daß nach einem Still­setzen die Spindeln nicht in der Position stehen bleiben, die sie beim Stillsetzen eingenommen haben. Insbesondere aufgrund der Fadenspannung und unter Umständen auch unter Einwirkung von Vibrationen drehen sich die Spindeln zurück, so daß es zu einer Schlaufen- oder Kringelbildung zumindest an einigen der Spin­ deln kommt. Dies kann an diesen Spinnstellen beim Anfahren zu Fadenbrüchen führen. Durch die den Spindeln zugeordneten Fest­stellbremsen wird dieses ungewünschte und unkontrollierte Ver­drehen verhindert, so daß damit die Anzahl der Fadenbrüche bei einem Anfahren deutlich reduziert werden kann.The invention is based on the knowledge that after a stop, the spindles do not remain in the position that they assumed when they were stopped. In particular due to the thread tension and possibly also under the action of vibrations, the spindles rotate back, so that there is a loop or curl formation at least on some of the spin deln comes. This can lead to thread breaks at these spinning positions when moving off. This undesired and uncontrolled turning is prevented by the parking brakes assigned to the spindles, so that the number of thread breaks when starting can be significantly reduced.

In weiterer Ausgestaltung der Erfindung ist für die Feststell­bremsen aller Spindeln wenigstens einer Maschinenseite eine ge­meinsame Betätigungseinrichtung vorgesehen. Das Betätigen der Feststellbremsen kann somit zentral gegensinnig zu dem Ein- und Ausschalten der Einzelmotoren gesteuert werden.In a further embodiment of the invention, a common actuating device is provided for the parking brakes of all spindles of at least one machine side. The actuation of the parking brakes can thus be controlled centrally in the opposite direction to the switching on and off of the individual motors.

In weiterer Ausgestaltung der Erfindung wird vorgsehen, daß den Spindeln einer Maschinenseite ein in Längsrichtung der Maschine verlaufendes Element zugeordnet ist, das mit Bremselementen versehen und an einen Verstellantrieb angeschlossen ist, durch dessen Verstellen die Bremselemente den Spindeln zustellbar sind. Auch bei einer sehr großen Anzahl von Spindeln werden die von dem Verstellantrieb aufzubringen Kräfte nicht allzu groß, da nur reltaiv kleine Bremskräfte erforderlich sind, die nur ein Verdrehen der nicht mehr angetriebenen Spindeln gegen die jeweilige Fadenspannung verhindern müssen. In vorteilhafter Ausgestaltung wird eine in Längsrichtung der Maschine beweglich geführte Stange vorgesehen, an der die Bremselemente befestigt sind. Eine derartige Stange läßt sich raumsparend unterbringen. In vorteilhafter Weiterbildung wird dabei vorgesehen, daß an beide Enden der Stange Zugantriebe angreifen, die wechselweise aktivierbar sind. Dadurch wird die Stange nur auf Zugkräfte be­lastet, so daß sie relativ dünn dimensioniert werden kann.In a further embodiment of the invention it is provided that the spindles of a machine side are assigned an element running in the longitudinal direction of the machine, which element is provided with brake elements and is connected to an adjustment drive, by the adjustment of which the brake elements can be advanced to the spindles. Even with a very large number of spindles, the forces to be applied by the adjustment drive are not too great, since only relatively small braking forces are required, which only have to prevent the spindles, which are no longer driven, from rotating against the respective thread tension. In an advantageous embodiment, a rod movably guided in the longitudinal direction of the machine is provided, to which the brake elements are attached. Such a rod can be accommodated in a space-saving manner. In an advantageous further development, it is provided that tensile drives, which can be activated alternately, act on both ends of the rod. As a result, the rod is only subjected to tensile forces, so that it can be dimensioned relatively thin.

In weiterer Ausgestaltung der Erfindung wird vorgesehen, daß den Spindeln Niederhalter zugeordnet sind, die auf beweglichen Haltern angeordnet und mittels eines Verstellantriebs den Spin­deln als Bremselemente zustellbar sind. Derartige Niederhalter sind üblicherweise bei einer Ringspinnmaschine vorhanden, um ein unbeabsichtigtes Herausziehen der Spindeln zu verhindern, beispielsweise bei einem Kopswechsel. Diese Niederhalter erhal­ten durch den an sie angreifenden Verstellantrieb eine zusätz­liche Funktion, nämlich als eine gemeinsame, bei Abschalten der Spinnmaschine zum Einsatz kommende Feststellbremse. In zweckmä­ßiger Ausgestaltung wird dabei vorgesehen, daß die Niederhalter mittels eines Verstellantriebes in eine die Spindeln freigeben­de Position bewegbar sind. Üblicherweise müssen derartige Nie­derhalter von Hand aus dem Bereich der Spindel herausbewegt werden, um die Spindel herausziehen zu können. Durch die vor­stehende Ausbildung wird dagegen möglich, alle Niederhalter gleichzeitig aus dem Bereich der Spindeln herauszubewegen, so daß diese für eine Wartung ohne zusätzlichen Arbeitsschritt aus ihren Lagern herausgenommen werden können.In a further embodiment of the invention, it is provided that hold-down devices are assigned to the spindles, which are arranged on movable holders and can be delivered to the spindles as braking elements by means of an adjustment drive. Such hold-down devices are usually present in a ring spinning machine in order to prevent the spindles from being pulled out unintentionally. for example when changing the cop. These hold-down devices are given an additional function by the adjustment drive engaging them, namely as a common parking brake that is used when the spinning machine is switched off. In an expedient embodiment it is provided that the hold-down devices can be moved into a position releasing the spindles by means of an adjustment drive. Such hold-down devices usually have to be moved out of the area of the spindle by hand in order to be able to pull the spindle out. The above training, on the other hand, makes it possible to move all hold-down devices out of the area of the spindles at the same time, so that they can be removed from their bearings for maintenance without an additional work step.

In weiterer Ausgestaltung der Erfindung wird vorgesehen, daß den Spindeln wenigstens einer Maschinenseite ein in Maschinen­längsrichtung verlaufender Schlauch zugeordnet ist, der an eine Versorgungseinrichtung für Druckmedium angeschlossen und durch Beaufschlagen mit Druckmedium an die Spindeln andrückbar ist. Da nur, wie bereits erwähnt wurde, relativ kleine Bremskräfte notwendig sind, läßt sich auf diese Weise eine sichere und zu­verlässige Feststellbremse für alle Spindeln schaffen. Dabei ist es vorteilhaft, wenn der Schlauch in einem Rohr verlegt ist, das im Bereich der Spindeln mit zu den Spindeln hin offen­en Ausschnitten versehen ist.In a further embodiment of the invention it is provided that the spindles are assigned to at least one machine side a hose extending in the machine longitudinal direction, which is connected to a supply device for pressure medium and can be pressed onto the spindles by applying pressure medium. Since only relatively small braking forces are necessary, as already mentioned, a safe and reliable parking brake can be created for all spindles in this way. It is advantageous if the hose is laid in a pipe which is provided in the region of the spindles with cutouts which are open towards the spindles.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung der in den Zeichnungen darge­stellten Ausführungsformen.

  • Fig. 1 zeigt eine Seitenansicht einer Spindel einer Ringspinnmaschine oder Ringzwirnmaschine mit einer erfindungsgemäßen Feststellbremse,
  • Fig. 2 zeigt eine schematische Darstellung der Fest­stellbremse mit dem zugehörigen Antrieb,
  • Fig. 3 eine Abwandlung der Ausführungsform nach Fig. 1 bezüglich der Bremselemente,
  • Fig. 4 eine weitere Abwandlung der Ausführungsform nach Fig. 1 und 2 bezüglich der Bremselemente,
  • Fig. 5 eine schematische, teilweise geschnittene Dar­stellung einer weiteren Ausführungsform für eine alle Spindeln wenigstens einer Maschinenseite be­dienende Feststellbremse,
  • Fig. 6 eine Seitenansicht einer Spindel, ähnlich Fig. 1, bei welcher Niederhalter für die Spindeln vorge­sehen sind, die gleichzeitig als Feststellbremse dienen, und
  • Fig. 7 eine schematische Darstellung eines Verstellantriebes für die als Feststellbremsen zusätzlich ausgenutzten Niederhalter.
Further features and advantages of the invention result from the following description of the embodiments shown in the drawings.
  • 1 shows a side view of a spindle of a ring spinning machine or ring twisting machine with a parking brake according to the invention,
  • 2 shows a schematic illustration of the parking brake with the associated drive,
  • 3 shows a modification of the embodiment according to FIG. 1 with regard to the braking elements,
  • 4 shows a further modification of the embodiment according to FIGS. 1 and 2 with respect to the braking elements,
  • 5 shows a schematic, partially sectioned illustration of a further embodiment for a parking brake operating all spindles of at least one machine side,
  • Fig. 6 is a side view of a spindle, similar to Fig. 1, in which hold-down devices are provided for the spindles, which also serve as a parking brake, and
  • Fig. 7 is a schematic representation of an adjustment drive for the hold-down devices additionally used as parking brakes.

Fig. 1 zeigt eine Spindel (11) einer Ringspinnmaschine oder Ringzwirnmaschine, die mit einem elektrischen Einzelmotor (10) angetrieben ist. Da derartige einzelmotorischen Antriebe be­kannt sind, kann auf eine detaillierte Darstellung dieses Ein­zelmotors (10) verzichtet werden. Die Einzelmotoren (10) und die in ihnen aufgenommenen und gelagerten Spindeln (11) sind an einer in Maschinenlängsrichtung durchlaufenden Spindelbank (13) befestigt. Die Spindelbank (13) ist in Fig. 1 nur schematisch als eine in Maschinenlängsrichtung verlaufende Schiene darge­stellt worden. In der Praxis kann sie durchaus andere Formen aufweisen, insbesondere die Form eines U-Profils oder eines sonstigen Profils.Fig. 1 shows a spindle (11) of a ring spinning machine or ring twisting machine which is driven by an electric single motor (10). Since single-motor drives of this type are known, a detailed representation of this single motor (10) can be dispensed with. The individual motors (10) and the spindles (11) accommodated and stored in them are fastened to a spindle bench (13) running through in the machine longitudinal direction. The spindle bench (13) has only been shown schematically in FIG. 1 as a rail running in the machine longitudinal direction. In practice, it can have other shapes, in particular the shape of a U-profile or another profile.

In Versuchen hat sich gezeigt, daß bei einem Abschalten der bevorzugt als Asynchronmotoren ausgeführten Einzelmotoren (10), sei es für ein Doffen oder bei einem Maschinenstillstand über das Wochenende o.dgl.,die Fadenspannung der auf eine nicht dar­gestellte Spulenhülse aufgewickelten Fäden oder der als Unter­windungen aufgewickelten Fäden ausreicht, um die Spindeln (11) zu verdrehen. Dadurch besteht die Gefahr, daß sich Kringel oder Schlaufen in den Fäden bilden, die bei einem Wiederanfahren Ur­sache für Fadenbrüche sein können. Um dies zu vermeiden, wird jeder Spindel (11) eine Feststellbremse zugeordnet, die bei ab­geschalteten Einzelmotoren (10) die Spindeln (11) gegen Verdre­hen sichert. Die aufzubringenden Bremskräfte sind relativ ge­ring, da sie nur das von der Fadenspannung aufgebrachte Moment ausgleichen und die Spindeln (11) nicht etwa aus dem Lauf zum Stillstand bringen müssen. Sie werden erst bei Stillstand oder unmittelbar vor dem Stillstand eingeschaltet.Experiments have shown that when the individual motors (10), which are preferably in the form of asynchronous motors, are switched off, be it for doffing or when the machine is at a standstill the weekend or the like, the thread tension of the threads wound on a bobbin tube, not shown, or of the threads wound as underwindings is sufficient to twist the spindles (11). As a result, there is a risk that curls or loops will form in the threads, which can be the cause of thread breaks when restarting. To avoid this, each spindle (11) is assigned a parking brake, which secures the spindles (11) against turning when the individual motors (10) are switched off. The braking forces to be applied are relatively low, since they only compensate for the moment applied by the thread tension and do not have to bring the spindles (11) to a standstill from the barrel. They are only switched on at standstill or immediately before standstill.

Bei der Ausführungsform nach Fig. 1 und 2 ist eine in Maschi­nenlängsrichtung verlaufende Stange (15) vorgesehen, die an ei­ner an der Spindelbank (13) angebrachten Halterung (14) in Gleitlagern (19) geführt ist, die beispielsweise Kunststoffpro­file sind. Die Stange (15) ist mit Bremselementen (16) verse­hen, die in den Bereich der Spindeln (11) ragen und die durch ein Längsverschieben der Stange (15) den Spindeln (11) zustell­bar sind.In the embodiment according to FIGS. 1 and 2, a rod (15) extending in the longitudinal direction of the machine is provided, which is guided on a holder (14) attached to the spindle bank (13) in slide bearings (19), which are, for example, plastic profiles. The rod (15) is provided with brake elements (16) which protrude into the area of the spindles (11) and which can be advanced to the spindles (11) by a longitudinal displacement of the rod (15).

Wie aus Fig. 2 zu ersehen ist, sind auf der Stange (15) in der Spindelteilung entsprechenden Abständen Haltemuffen (23) ange­bracht, an denen Blattfedern (24) befestigt sind, die Bremsbe­läge (25) tragen, die den Spindeln (11) zustellbar sind. Für die Stange (15) ist ein pneumatischer Antrieb vorgesehen, durch welchen die Stange (15) bei einem Verstellen in oder aus der Bremsstellung jeweils auf Zug belastet wird.As can be seen from Fig. 2, holding sleeves (23) are attached to the rod (15) in the spindle division at appropriate intervals, to which leaf springs (24) are attached, which carry the brake pads (25) that can be delivered to the spindles (11) are. A pneumatic drive is provided for the rod (15), by means of which the rod (15) is loaded in tension when it is adjusted in or out of the braking position.

An das Ende der Stange (15) sind die Kolben von pneumatischen Pressen (17, 18) angelenkt, die von einer Druckluftquelle (22) gesteuert über ein Elektromagnetventil (21) wechselweise mit Druckluft beaufschlagbar sind. In der in Fig. 2 dargestellten Bremsstellung ist die pneumatische Presse (18) mit Druckluft beaufschlagt, während die Presse (17) entspannt ist.At the end of the rod (15) the pistons are articulated by pneumatic presses (17, 18), which can be alternately acted upon by compressed air from a compressed air source (22) via an electromagnetic valve (21). In the shown in Fig. 2 In the braking position, the pneumatic press (18) is pressurized with compressed air while the press (17) is relaxed.

Um die Möglichkeit zu schaffen, daß bei einem Abschalten der Maschine keine Druckluftversorgung aufrechterhalten werden muß, ist eine Rasteinrichtung vorgesehen, die die Stange (15) mit den Bremselementen (16) mit einer vorgegebenen Rastkraft in der Bremsstellung hält. Hierzu ist an der Stange (15) ein Rastele­ment (31) angebracht, in das eine Rastfeder (33) mit einer Nase einrastet. Erst wenn durch Beaufschlagen der pneumatischen Presse (17) mit Druckluft diese Rastkraft überwunden wird, läßt sich die Stange (15) wieder in die Stellung zurückbewegen, in der die Bremselemente (16) nicht mehr aktiv sind. Die gelöste Stellung der Feststellbremsen wird durch eine entsprechende Verrastung gesichert, wozu an der Stange (15) ein weiteres Rastelement (31) angebracht ist, der eine mit einer Rastnase versehene Rastfeder (32) zugeordnet ist, die die Stange (15) in der Stellung halt, in welcher die Bremselemente (16) gelöst sind.In order to create the possibility that no compressed air supply has to be maintained when the machine is switched off, a latching device is provided which holds the rod (15) with the brake elements (16) in the braking position with a predetermined latching force. For this purpose, a locking element (31) is attached to the rod (15), into which a locking spring (33) engages with a nose. Only when this locking force is overcome by applying compressed air to the pneumatic press (17) can the rod (15) be moved back into the position in which the brake elements (16) are no longer active. The released position of the parking brakes is secured by a corresponding latching, for which purpose a further latching element (31) is attached to the rod (15) and is assigned a latching spring (32) provided with a latching lug, which latches the rod (15) in the position stop, in which the braking elements (16) are released.

In Fig. 3 ist eine Ausführungsform ähnlich Fig. 2 dargestellt, bei welcher an der Stange (15) in dem der Spindelteilung ent­sprechenden Abstand Muffen (23) angebracht sind, die mit Blatt­federn (34) versehen sind, die eine Rastmulde aufweisen, mit welchen sie gegen die Spindeln (11) in der Bremsstellung ver­rasten. Bei dieser Ausführungsform kann auf zusätzliche Verra­stungen verzichtet werden. Das Bremselement (16) ist ein fe­dernder in seinem Endbereich an den Spindeldurchmesser ange­paßter Bremsarm (34).In Fig. 3 an embodiment similar to Fig. 2 is shown, in which on the rod (15) at the distance corresponding to the spindle pitch sleeves (23) are attached, which are provided with leaf springs (34) which have a locking recess with which lock them against the spindles (11) in the braking position. In this embodiment, additional latching can be dispensed with. The brake element (16) is a resilient brake arm (34) which is adapted in its end region to the spindle diameter.

Bei der Ausführungsform nach Fig. 4 sind an der Stange (15) als Bremselemente (16) Bremskeile (35) in der Spindelteilung ent­sprechenden Abständen angebracht, die in ihrem den Spindeln (11) gegenüberliegenden Bereich mit einem Bremsbelag (36) ver­sehen sind. Da bei dieser Ausführungsform die Bremselemente (16) eine Kraft in Querrichtung zur Stange (15) aufbringen, die von der Stange (15) aufgefangen werden muß, ist es zweckmäßig, Widerlager (20) vorzusehen.In the embodiment according to FIG. 4, brake wedges (35) are attached to the rod (15) as brake elements (16) in the spindle division at appropriate intervals, which are provided with a brake lining (36) in their area opposite the spindles (11). Since in this embodiment the braking elements (16) apply a force in the transverse direction to the rod (15), the off the rod (15), it is advisable to provide abutments (20).

In Fig. 5 ist eine für die Spindeln (11) einer Maschinenseite bestimmte Feststellbremse vorgesehen, die als Bremselement ei­nen sich in Maschinenlängsrichtung erstreckenden, in der Nähe der Spindeln (11) angeordneten elastischen Schlauch (29) ent­hält. Der elastische Schlauch (29) ist an einem Ende mit einer Klemmeinrichtung dicht verschlossen. An seinem anderen Ende schließt eine Druckluftversorgungsleitung an, die über ein Ven­til (39) an eine Druckluftquelle (37) und einen Speicher (38) angeschlossen ist. Zwischen dem Speicher (38) und der Druck­luftquelle (37) ist ein Rückschlagventil (41) angeordnet. Der Schlauch (29) ist innerhalb eines Rohres (27) angeordnet, das stationär verlegt ist und das im Bereich der Spindeln (11) zu diesen hin offene Ausschnitte (28) enthält. Wenn über die Druckluftversorgungseinrichtung (26) durch Verstellen des Elek­tromagnetventils (39) der Schlauch (29) mit Druckluft beauf­schlagt wird, so quillt er aus den Ausschnitten (28) heraus und legt sich an die Spindeln (11) an. Der Speicher (38) stellt si­cher, daß ein ausreichendes Volumen vorhanden ist, so daß auch bei einer geringfügigen Leckage über eine längere Stillstands­zeit eine Bremswirkung erhalten wird. Auch hier ist zu beach­ten, daß die auftretenden Bremskräfte nur relativ gering sein müssen.In Fig. 5, a parking brake is provided for the spindles (11) of a machine side and contains as a braking element an elastic hose (29) which extends in the longitudinal direction of the machine and is arranged in the vicinity of the spindles (11). The elastic hose (29) is sealed at one end with a clamping device. At its other end there is a compressed air supply line, which is connected via a valve (39) to a compressed air source (37) and a store (38). A check valve (41) is arranged between the store (38) and the compressed air source (37). The hose (29) is arranged within a tube (27) which is installed in a stationary manner and which contains cutouts (28) which are open towards the latter in the region of the spindles (11). If compressed air is applied to the hose (29) via the compressed air supply device (26) by adjusting the electromagnetic valve (39), it swells out of the cutouts (28) and lies against the spindles (11). The memory (38) ensures that there is sufficient volume so that a braking effect is obtained even in the event of a slight leak over a longer period of inactivity. It should also be noted here that the braking forces that occur only have to be relatively low.

In Abwandlung der dargestellten Ausführungsform wird vorgese­hen, daß der elastische Schlauch (29) so ausgebildet ist, daß er aufgrund seiner Elastizität aus den Ausschnitten (28) her­ausquillt und als Feststellbremse für die Spindeln (11) dient. Dieser Schlauch (29) wird dann an eine Unterdruckquelle ange­schlossen, so daß er durch Anlegen eines Unterdruckes so weit zusammengezogen wird, daß die Bremswirkung aufgehoben wird.In a modification of the illustrated embodiment, it is provided that the elastic hose (29) is designed such that it springs out of the cutouts (28) due to its elasticity and serves as a parking brake for the spindles (11). This hose (29) is then connected to a vacuum source, so that it is contracted by applying a vacuum to such an extent that the braking effect is canceled.

Anstelle einer Versorgungseinrichtung (26) zum Versorgen des Schlauches (29) mit Druckluft kann auch eine Versorgungsein­ richtung zum Zuführen eines Hydraulikmediums vorgesehen werden, die entsprechend aufgebaut ist.Instead of a supply device (26) for supplying the hose (29) with compressed air, a supply can also be provided Direction for supplying a hydraulic medium can be provided, which is constructed accordingly.

In Fig. 6 und 7 ist eine Ausführungsform dargestellt, die im Prinzip der Ausführungsform nach Fig. 1 und 2 entspricht, wobei jedoch die Feststellbremsen eine zusätzliche Funktion erhalten haben. Diese Feststellbremsen dienen nämlich zusätzlich noch als Niederhalter für die Spindeln (11), so daß diese bei einem Doffen o.dgl. nicht unbeabsichtigt aus ihren Lagern herausgezo­gen werden können. Bei dieser Ausführungsform sind die Bremsbe­läge (25) als Niederhalter gestaltet, die in der Betriebsstel­lung in geringem radialem Abstand von der Spindel (11) angeord­net sind. Zwischen den als Niederhaltern dienenden Bremsbelägen (25) und dem Einzelmotor (10) ist an der Spindel ein Anschlag in Form eines Ringbundes (46) oder auch einer Ringnut vorgese­hen, in welche jeweils der Bremsbelag (25) eingreift, ohne die Spindel zu berühren. Die Bremsbeläge (25) sind auf als Blattfe­dern (24) ausgebildeten Haltern angeordnet, die nach vorne bis zur Bedienungsseite der Maschine ragen, so daß ihre Enden (45) für eine Bedienungsperson zugänglich sind. Die Bedienungsperson kann somit die als Niederhalter dienenden Bremsbeläge (25) ge­gen die Kraft der Blattfedern (24) aus dem Bereich der Spindeln (11) herausschwenken, so daß sie die betreffende Spindel auch einzeln nach oben herausziehen kann.6 and 7 show an embodiment which corresponds in principle to the embodiment according to FIGS. 1 and 2, but with the parking brakes being given an additional function. These parking brakes serve in addition as hold-downs for the spindles (11), so that these or the like when doffing. cannot be pulled out of their bearings unintentionally. In this embodiment, the brake pads (25) are designed as hold-down devices, which are arranged in the operating position at a small radial distance from the spindle (11). Between the brake pads (25) serving as hold-down devices and the individual motor (10), a stop in the form of an annular collar (46) or an annular groove is provided on the spindle, in each of which the brake pad (25) engages without touching the spindle. The brake pads (25) are arranged on holders designed as leaf springs (24) which project forward to the operating side of the machine, so that their ends (45) are accessible to an operator. The operator can thus swing out the brake pads (25) against the force of the leaf springs (24) out of the area of the spindles (11) so that they can also pull out the respective spindle upwards.

Die als Blattfeder ausgebildeten Halter (24) sind mittels Hal­temuffen (23) auf einer Stange (15) angeordnet, die auf einer Seite der Spindel die Maschine in Maschinenlängsrichtung durch­läuft und die am Maschinenende an jeweils eine pneumatischen Presse (17, 18) angeschlossen sind. Durch Beaufschlagen der pneumatischen Presse (18) werden die Feststellbremsen betätigt, indem die Stange derart zu einem Maschinenende hingezogen wird, daß die Bremsbeläge (25) sich an die Spindeln (11) anlegen.Ent­sprechend der Ausführungsform nach Fig. 2 erfolgt die Schaltung über eine pneumatische Steuerung, die ein Elektromagnetventil (21) enthält. Auf der Stange (15) ist gleichfalls ein Rastele­ ment (31) vorgesehen, in welches die Rastfeder (33) mit einer Nase einrastet und somit die Stange (15) in der Bremsstellung hält.The holders (24) designed as leaf springs are arranged by means of holding sleeves (23) on a rod (15) which runs through the machine in the machine longitudinal direction on one side of the spindle and which are connected to a pneumatic press (17, 18) at the machine end. By actuating the pneumatic press (18), the parking brakes are actuated by pulling the rod towards one end of the machine in such a way that the brake pads (25) rest on the spindles (11). Corresponding to the embodiment according to FIG pneumatic control which contains an electromagnetic valve (21). There is also a Rastele on the rod (15) ment (31) is provided, in which the detent spring (33) engages with a nose and thus holds the rod (15) in the braking position.

In der Betriebsstellung haben die als Niederhalter dienenden Bremsbeläge (25) nur einen relativ geringen radialen Abstand zu den Spindeln, der kleiner als die radiale Erstreckung des Ring­bundes (46) (oder der radialen Tiefe einer Ringnut) ist. Um diese Stellung einzunehmen, wird beim Wiedereinschalten der Ma­schine die Stange (15) über die Presse (17) bei entsprechender Schaltung des Magnetventils (21) in diese Betriebsposition ge­bracht. In dieser Betriebsposition rastet ein erster Rastnocken (48) einer Feder (32) in ein an der Stange (15) angebrachtes Rastelement (31) ein. Damit diese Stellung bei beaufschlagter Presse (17) nicht überfahren wird, ist im Zylinder der Presse (17) ein vom Kolben der Presse gesteuerter Auslaß (50) so vor­gesehen, daß er beim Erreichen der Betriebsstellung durch den Kolben freigegeben wird. Zugeführte Druckluft entweicht und be­wegt den Kolben nicht weiter.In the operating position, the brake pads (25) serving as hold-down devices have only a relatively small radial distance from the spindles, which is smaller than the radial extent of the annular collar (46) (or the radial depth of an annular groove). In order to assume this position, when the machine is switched on again, the rod (15) is brought into this operating position via the press (17) when the solenoid valve (21) is switched accordingly. In this operating position, a first locking cam (48) of a spring (32) engages in a locking element (31) attached to the rod (15). So that this position is not passed when the press (17) is acted upon, an outlet (50) controlled by the piston of the press is provided in the cylinder of the press (17) so that it is released by the piston when the operating position is reached. Compressed air supplied escapes and does not move the piston.

Zusätzlich ist vorgesehen, daß die gesamte Stange (15) mit den als Niederhalter dienenden Bremsbelägen (25) in eine Außerbe­triebsstellung verstellbar ist, in welcher die Bremsbeläge (25) außerhalb des Bereiches der Spindeln (11) liegen, so daß diese nach oben abgezogen werden können. Diese Stellung kann dadurch angefahren werden, daß durch ein weiteres Elektromagnetventil (47) der Auslaß (50) absperrbar ist. Durch Umsteuern des Elek­tromagnetventils (47) wird der Auslaß (50) geschlossen und der Presse (17) zugeführte Druckluft bewegt den Kolben der Presse weiter in die Endstellung, in der die Nocke (49) der Rastfeder (32) in das an der Stange (15) angeordnete Rastelement (31) einrastet und die Einrichtung in der Betriebsstellung fixiert.In addition, it is provided that the entire rod (15) with the brake pads (25) serving as hold-down devices can be adjusted into an inoperative position, in which the brake pads (25) lie outside the area of the spindles (11), so that these are pulled off upwards can. This position can be reached in that the outlet (50) can be shut off by a further solenoid valve (47). By reversing the solenoid valve (47), the outlet (50) is closed and compressed air supplied to the press (17) moves the piston of the press further into the end position in which the cam (49) of the detent spring (32) moves into the on the rod ( 15) arranged locking element (31) engages and fixes the device in the operating position.

Claims (12)

1. Spinnereimaschine, insbesondere Ringspinnmaschine oder Ringzwirnmaschine, mit auf beiden Maschinenseiten angeordneten Spindeln, die jeweils mit einem elektrischen Einzelmotor verse­hen sind, dadurch gekennzeichnet, daß den Spindeln (11) sie bei abgeschalteten Einzelmotoren (10) gegen Verdrehen sichernde Feststellbremsen (16, 29) zugeordnet sind.1. Spinning machine, in particular ring spinning machine or ring twisting machine, with spindles arranged on both machine sides, each of which is provided with an electric single motor, characterized in that the spindles (11) when the individual motors (10) are turned off to prevent the parking brakes (16, 29) assigned. 2. Spinnereimaschine nach Anspruch 1, dadurch gekennzeich­net, daß für die Feststellbremsen (16, 29) aller Spindeln (11) wenigstens einer Maschinenseite eine gemeinsame Betätigungsein­richtung vorgesehen ist.2. Spinning machine according to claim 1, characterized in that a common actuating device is provided for the parking brakes (16, 29) of all spindles (11) at least one machine side. 3. Spinnereimaschine nach Anspruch 1 oder 2, dadurch ge­kennzeichnet, daß den Spindeln (11) einer Maschinenseite ein in Längsrichtung der Maschine verlaufendes Element (15) zugeordnet ist,das mit Bremselementen (16) versehen und an einen Verstell­antrieb (17, 18) angeschlossen ist, durch dessen Verstellen die Bremselemente (16) den Spindeln (11) zustellbar sind.3. Spinning machine according to claim 1 or 2, characterized in that the spindles (11) of a machine side is assigned a extending in the longitudinal direction of the machine element (15) which is provided with braking elements (16) and connected to an adjustment drive (17, 18) by adjusting the brake elements (16) the spindles (11) can be adjusted. 4. Spinnereimaschine nach einem der Ansprüche 1 bis 3, da­durch gekennzeichnet, daß eine in Längsrichtung der Maschine beweglich geführte Stange (15) vorgesehen ist,an der die Brems­elemente (16) befestigt sind.4. Spinning machine according to one of claims 1 to 3, characterized in that a rod (15) movably guided in the longitudinal direction of the machine is provided, to which the brake elements (16) are attached. 5. Spinnereimaschine nach Anspruch 4, dadurch gekennzeich­net, daß an beide Enden der Stange (15) Zugantriebe (17, 18) angreifen, die wechselweise aktivierbar sind.5. Spinning machine according to claim 4, characterized in that at both ends of the rod (15) act as drives (17, 18) which can be activated alternately. 6. Spinnereimaschine nach Anspruch 5, dadurch gekennzeich­net, daß als Zugantriebe pneumatische Pressen (17, 18) vorgese­hen sind.6. Spinning machine according to claim 5, characterized in that pneumatic presses (17, 18) are provided as train drives. 7. Spinnereimaschine nach Anspruch 5 oder 6, dadurch ge­kennzeichnet, daß die Stange (15) mit einer in der Bremsstel­lung wirksamen Rasteinrichtung (31, 33) versehen ist.7. Spinning machine according to claim 5 or 6, characterized in that the rod (15) is provided with an effective locking device (31, 33) in the braking position. 8. Ringspinnmaschine oder Ringzwirnmaschine nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß den Spindeln (11) Niederhalter (25) zugeordnet sind, die auf beweglichen Haltern (24) angeordnet und mittels eines Verstellantriebes (15, 17, 18) als Bremselement (16) den Spindeln (11) zustellbar sind.8. ring spinning machine or ring twisting machine according to one of claims 1 to 7, characterized in that the spindles (11) are assigned hold-downs (25) which are arranged on movable holders (24) and by means of an adjustment drive (15, 17, 18) as a braking element (16) the spindles (11) are deliverable. 9. Ringspinnmaschine oder Ringzwirnmaschine nach Anspruch 8, dadurch gekennzeichnet, daß die Niederhalter (25) mittels eines Verstellantriebes (17) in eine die Spindeln (11) freige­bende Position bewegbar sind.9. ring spinning machine or ring twisting machine according to claim 8, characterized in that the hold-down device (25) can be moved by means of an adjustment drive (17) into a position which releases the spindles (11). 10. Spinnereimaschine nach einem der Ansprüche 1 bis 9, da­durch gekennzeichnet,daß die Bremselemente (16) in Zustellrich­tung zu den Spindeln (11) elastisch nachgiebig angeordnet und/­oder ausgebildet sind.10. Spinning machine according to one of claims 1 to 9, characterized in that the braking elements (16) in the feed direction to the spindles (11) are arranged and / or designed to be resilient. 11. Spinnereimaschine nach Anspruch 1 oder 2, dadurch ge­kennzeichnet, daß den Spindeln (11) einer Maschinenseite ein in Maschinenlängsrichtung verlaufender Schlauch (29) zugeordnet ist, der an eine Versorgungseinrichtung (26) für Druckmedium angeschlossen und durch Beaufschlagen mit Druckmedium an die Spindeln (11) andrückbar ist.11. Spinning machine according to claim 1 or 2, characterized in that the spindles (11) on one machine side is assigned a hose (29) extending in the machine longitudinal direction, which hose is connected to a supply device (26) for pressure medium and by applying pressure medium to the spindles ( 11) can be pressed. 12. Spinnereimaschine nach Anspruch 11,dadurch gekennzeich­net, daß der Schlauch (29) in einem Rohr (27) verlegt ist, das im Bereich der Spindeln (11) mit zu den Spindeln (11) hin offe­nen Ausschnitten (28) versehen ist.12. Spinning machine according to claim 11, characterized in that the hose (29) is laid in a tube (27) which is provided in the region of the spindles (11) with cutouts (28) which are open towards the spindles (11).
EP89116744A 1988-11-18 1989-09-09 Spinning machine, in particular a ring-spinning or ring-twisting machine Withdrawn EP0371214A1 (en)

Applications Claiming Priority (2)

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DE3839026A DE3839026A1 (en) 1988-11-18 1988-11-18 SPINNING MACHINE, ESPECIALLY RING SPINNING MACHINE OR RING TWINING MACHINE
DE3839026 1988-11-18

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EP (1) EP0371214A1 (en)
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EP0841416A1 (en) * 1996-11-12 1998-05-13 Howa Machinery Limited Stopping and restarting device in independent driven spindle in spinning machine
CN1065010C (en) * 1996-11-12 2001-04-25 丰和工业株式会社 Brake and restarting device for independent driven spindle in spinning machine
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DE3839026A1 (en) 1990-05-23
US5044149A (en) 1991-09-03
US5099639A (en) 1992-03-31
JPH02160934A (en) 1990-06-20

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