EP3572568B1 - Drafting frame and drafting unit for a spinning machine - Google Patents

Drafting frame and drafting unit for a spinning machine Download PDF

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Publication number
EP3572568B1
EP3572568B1 EP19175866.3A EP19175866A EP3572568B1 EP 3572568 B1 EP3572568 B1 EP 3572568B1 EP 19175866 A EP19175866 A EP 19175866A EP 3572568 B1 EP3572568 B1 EP 3572568B1
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EP
European Patent Office
Prior art keywords
knee lever
drafting system
joint axis
system unit
toggle lever
Prior art date
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Application number
EP19175866.3A
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German (de)
French (fr)
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EP3572568B8 (en
EP3572568A1 (en
Inventor
Joachim Diedrich
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.)
Saurer Spinning Solutions GmbH and Co KG
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Saurer Spinning Solutions GmbH and Co KG
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Publication of EP3572568A1 publication Critical patent/EP3572568A1/en
Publication of EP3572568B1 publication Critical patent/EP3572568B1/en
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/46—Loading arrangements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/46—Loading arrangements
    • D01H5/48—Loading arrangements using weights
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/56—Supports for drafting elements
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/56—Supports for drafting elements
    • D01H5/565—Top roller arms
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H3/00—Spinning or twisting machines in which the product is wound-up intermittently, e.g. mules

Definitions

  • the invention relates to a drafting system having a drafting system unit for a spinning machine and such a drafting system unit having at least one load carrier which can be pivoted between an operating position and an open position by means of an adjustment device.
  • Drafting systems for spinning machines are known in a variety of configurations from the prior art. They are used to stretch or warp a sliver, which causes a reduction in the cross-section of the fiber. During the draft, the fibers must be shifted against each other as evenly as possible in order to achieve an even sliver, which is a prerequisite for the production of an even yarn.
  • the drafting devices generally have a plurality of pairs of rollers which are arranged one behind the other and clamp the sliver running between them.
  • a pair of rollers usually consists of a driven bottom roller and an upper pressure roller resting against the bottom roller.
  • a delay in the sliver is achieved in that the circumferential speed increases from pair of rolls to pair of rolls in the transport direction of the sliver defined by the direction of rotation of the pairs of rolls.
  • a drafting unit with the features according to the preamble of claim 1 is, for example, from the publications DE 20 19 352 A1 and DE 39 04 108 A1 known.
  • a drafting unit with a load carrier of the type mentioned above is an assembly of a drafting system of a spinning machine which, due to its design, offers the possibility of moving the load carrier, e.g lift off the bottom rollers.
  • load carriers have the disadvantage that high actuating forces are required, particularly when a plurality of load carriers coupled to one another are adjusted simultaneously, which, for example, guide and load a common top roller.
  • load carriers also require a tightly toleranced or precisely aligned position in relation to one another.
  • the object of the invention is to provide a drafting system and a drafting system unit for a To provide a drafting system for a spinning machine, the drafting system unit having a particularly simple structure and allowing user-friendly operation, in particular by simplifying the actuation of several load carriers that can be opened or closed at the same time by reducing the actuation effort.
  • the invention achieves the object by a drafting unit having the features of claim 1 and by a drafting unit having the features of claim 8.
  • Advantageous developments of the drafting unit are specified in the dependent claims.
  • a characteristic of the drafting unit according to the invention is that two or more load carriers are each connected in a torsion-proof manner to a holding rod which can be rotated about its longitudinal axis by means of the adjusting device pivoting the at least two load carriers together and which is mounted on a holding rod receptacle.
  • a non-rotatable connection of two or more load carriers to a central support rod makes it possible to effect a reliable adjustment of two or more load carriers arranged on the support rod simply by twisting the support rod about its longitudinal axis.
  • the adjustment device is used to adjust the holding rod, which allows the two or more load carriers to be conveniently shifted between the operating position and the open position at a predetermined position that is easily accessible to the user/operator.
  • the drafting unit is distinguished by the fact that it allows the load carriers to be reliably positioned in the desired position. In addition, further connecting elements between the load carriers can be dispensed with. Compared to an adjustment of individual load carriers alone, the support rod that can be adjusted by means of the adjustment device also has the advantage that the position of all load carriers arranged on the support rod can be secured by locking the support rod in the desired position.
  • the adjustment device for moving the holding rod can be configured as desired.
  • the adjusting device has a toggle lever arrangement which is operatively connected to the holding rod and which can be adjusted between a closed position associated with the operating position and an open position associated with the open position.
  • the design of the adjustment device with a toggle lever arrangement enables a particularly comfortable and energy-saving adjustment of the load carrier or load carriers between the operating position and the open position.
  • the design of the toggle lever arrangement can be designed taking into account the desired actuating forces and thus allows a comfortable twisting of the holding rod and all the load carriers arranged on the holding rod.
  • the configuration of the toggle lever arrangement can in principle be freely selected.
  • the toggle lever arrangement has a first toggle lever and a second toggle lever, the first toggle lever being pivotable about a first joint axis arranged in a stationary manner opposite the holding rod, the first and the second toggle lever being articulated via a toggle lever joint axis and the second toggle lever has a toggle lever section which is spaced apart from the toggle lever joint axis and which is connected to the holding rod in a manner that transmits a rotational movement.
  • the first toggle lever is fixed relative to the holding rod with its first joint axis.
  • the retaining rod and the first toggle lever are rotatably mounted on a common component, for example on a common section of a machine frame of the drafting unit.
  • the second toggle lever is connected with its toggle lever section spaced apart from the toggle joint axis, which can in particular be a toggle lever end opposite the toggle lever joint axis, to the holding rod for transmitting a rotary movement, so that by adjusting the first and second toggle lever, which are connected to one another in an articulated manner, in particular via a common toggle lever joint axis, causing the holding rod to rotate.
  • Such a configuration of the drafting system unit is characterized by its particularly simple structure, which at the same time allows reliable power transmission and determination of the actuating forces.
  • the operating position of the two or more load carriers can be secured in any desired manner, for example by means of suitable locking elements which lock the toggle lever arrangement in the closed position.
  • the toggle lever arrangement is arranged in the closed position in an over-center position.
  • a corresponding configuration of the toggle lever arrangement is distinguished characterized in that there is no need for separate locking elements for the closed position and it is prevented in a particularly simple and reliable manner that the two or more load carriers are not automatically adjusted in the direction of the open position during operation due to the forces then occurring.
  • the second toggle lever is articulated at one end opposite the toggle joint axis via a second joint axis to a link which is non-rotatably connected to the holding rod at its end opposite the second joint axis.
  • the second toggle lever of the toggle lever arrangement is connected in an articulated manner to a link which, with a link section spaced apart from the second toggle lever, is non-rotatably coupled to the holding rod or is arranged on the holding rod.
  • an actuation of the adjusting device by means of which the holding rod is rotated about its longitudinal axis or an advantageously provided toggle lever arrangement is adjusted between the closed position and the open position, can in principle take place in any manner.
  • the use of different electrically, hydraulically or pneumatically acting drives is conceivable here.
  • the toggle lever arrangement can be adjusted between the operating position and the closed position using a hand lever.
  • the use of a hand lever is characterized by particular simplicity and low susceptibility to errors, with the operating forces being in a comfortable range for a user due to the toggle lever arrangement used.
  • connection between the hand lever and the toggle lever arrangement can be freely selected within the framework of the structural conditions.
  • the hand lever can be pivoted about the first joint axis together with the first toggle lever.
  • a pivotable mounting of the hand lever about the first articulation axis of the first toggle lever enables a particularly compact and simple design, since a further bearing axis for the hand lever can be dispensed with.
  • the hand lever is rigidly connected to the first toggle lever, in particular formed in one piece.
  • the rigid connection of the hand lever to the first toggle lever enables a simpler construction and a more effortless and more comfortable adjustment of the toggle lever arrangement between the closed and the open position.
  • the hand lever with the toggle lever arrangement that can be brought into engagement by means of engagement elements, so that actuation of the hand lever via the engagement elements, which couple the hand lever to the toggle lever arrangement in a force-transmitting manner, leads to an actuation or rotating movement of the toggle lever arrangement.
  • the engagement elements can be formed, for example, by a recess and a web, bolt, projection or the like interacting with the recess, one of the components consisting of the hand lever and toggle lever arrangement having the recess and the other component having the component interacting with the recess.
  • detachable locking connections are also conceivable as engagement elements.
  • the drafting system has a drafting system unit in which two or more load carriers are connected in a torque-proof manner to a common holding rod which can be rotated about its longitudinal axis between an operating position and an open position of the load carrier by means of an adjusting device.
  • the support rod is rotatably mounted on a support rod receptacle and, due to its rotatability, allows reliable adjustment and positioning of all load carriers arranged on the support rod.
  • the position of the load carrier can also be secured centrally via the adjustment device, so that individual locks for each load carrier can be dispensed with. Further configurations of the drafting system result from the possible developments of the drafting system unit presented above.
  • the drafting unit 1 shown of a spinning machine serves to stretch a sliver between the pressure rollers 15a, 15b, 15c arranged on a support arm 16 of a loading carrier 3 and the other lower rollers 14a, 14b, 14c of the drafting system, not shown here.
  • the roller pairs formed from a bottom roller 14a, 14b, 14c and a pressure roller 15a, 15b, 15c have a different, increasing rotational speed in the direction of transport, in order to bring about a stretching of the sliver in the region between the pairs of rollers.
  • the drafting system unit 1 has two load carriers 3 arranged parallel to one another on a holding rod 4, each with a support arm 16, which each have three pressure roller pairs formed from two pressure rollers 15a, 15b, 15c, the axes of rotation of which run perpendicular to the longitudinal axis of the associated support arm 16 .
  • the support arms 16 are each rigidly connected to two supporting bodies 17 which are arranged on both sides of the support arm 16 and which in turn are connected in a torsion-proof manner to a holding rod 4 (cf. figure 3 ).
  • the pressure rollers 15a, 15b, 15c are in contact with the lower rollers 14a, 14b, 14c, so as to stretch the sliver arranged between them.
  • the load carriers 3 from the in figure 1 illustrated operating position to an in figure 2 shown open position are pivoted, in which the pressure rollers 15a, 15b, 15c are lifted from the lower rollers 14a, 14b, 14c.
  • an adjustment device 2 which pivots the support arm 16 together with the supporting bodies 17 connected to the support arm 16 about a longitudinal axis of the holding rod 4 . Pivoting results from a twisting of the support rod 4, which is rotatably mounted on a support rod receptacle 5, for example a machine housing. Due to the non-rotatable arrangement of the supporting bodies 17 on the retaining rod 4, a rotation of the retaining rod 4 in the retaining rod receptacle 5 causes a displacement of the load carrier 3 in accordance with the rotational movement of the retaining rod 4 caused by the adjustment device.
  • the adjusting device 2 has a toggle lever arrangement 6, which can be adjusted by means of a hand lever 13 between a closed position associated with the operating position and an open position associated with the open position.
  • the toggle lever arrangement 6 has a first toggle lever 7 which, according to a preferred exemplary embodiment, can be pivoted about a first joint axis 9 on the holding rod receptacle 5 .
  • the holding rod receptacle and the first joint axis are arranged at a distance from one another.
  • the first toggle lever 7 is connected to the second toggle lever 8 via a toggle joint axis 11 .
  • the second toggle lever 8 is connected at a toggle lever section spaced apart from the toggle joint axis 11, in this preferred exemplary embodiment at the end of the second toggle lever 8 opposite the toggle lever joint axis 11, via a second joint axis 10 to a link 12, which is at the end opposite the second joint axis 10 is non-rotatably connected to the support rod 4, so that the twisting of the link 12 causes an adjustment of the support rod 4 and thus a displacement of the load carrier 3.
  • a hand lever 13 which can be pivoted about the first joint axis 9 and interacts with the toggle lever arrangement 6 serves to adjust the toggle lever arrangement 6 .
  • the hand lever 13 is rigidly connected to the first toggle lever 7, as a result of which a movement of the hand lever 13 leads directly to an actuation of the first toggle lever 7.
  • the hand lever 13 and the first toggle lever 7 are preferably formed from one piece of material.
  • the hand lever 13 and the first toggle lever can be formed from two pieces of material which are connected to one another, for example, by means of the usual measures of positive, material or non-positive locking.
  • the hand lever 13 transfers the toggle lever arrangement 6 from an over-center position into the open position.
  • the hand lever 13 must only be moved back in the opposite direction from the position in figure 2 illustrated opening position to the in figure 1 shown operating position required, the hand lever 13 converts the toggle lever assembly 6 in the over-center position.

Description

Die Erfindung betrifft ein eine Streckwerkeinheit aufweisendes Streckwerk für eine Spinnmaschine sowie eine derartige Streckwerkeinheit, mit wenigstens einem mittels einer Verstellvorrichtung zwischen einer Betriebsposition und einer Öffnungsstellung verschwenkbaren Belastungsträger.The invention relates to a drafting system having a drafting system unit for a spinning machine and such a drafting system unit having at least one load carrier which can be pivoted between an operating position and an open position by means of an adjustment device.

Streckwerke für Spinnmaschinen sind in vielfältigen Ausgestaltungen aus dem Stand der Technik bekannt. Sie dienen dazu, ein Faserband zu verstrecken bzw. zu verziehen, wodurch eine Querschnittsreduzierung der Faser bewirkt wird. Während des Verzugs müssen die Fasern möglichst gleichmäßig gegeneinander verschoben werden, um ein gleichmäßiges Faserband zu erreichen, welches Voraussetzung für die Herstellung eines gleichmäßigen Garns ist. Zur Verstreckung des Faserbands weisen die Streckwerke in der Regel mehrere nacheinander angeordnete Walzenpaare auf, die aneinanderliegend angeordnet das zwischen ihnen verlaufende Faserband einklemmen. Ein Walzenpaar besteht dabei üblicherweise aus einer angetriebenen Unterwalze und einer an der Unterwalze anliegenden oberen Druckwalze. Ein Verzug des Faserbands wird dadurch erreicht, dass in der durch die Drehrichtung der Walzenpaare festgelegten Transportrichtung des Faserbands die Umfangsgeschwindigkeit von Walzenpaar zu Walzenpaar zunimmt.Drafting systems for spinning machines are known in a variety of configurations from the prior art. They are used to stretch or warp a sliver, which causes a reduction in the cross-section of the fiber. During the draft, the fibers must be shifted against each other as evenly as possible in order to achieve an even sliver, which is a prerequisite for the production of an even yarn. To stretch the sliver, the drafting devices generally have a plurality of pairs of rollers which are arranged one behind the other and clamp the sliver running between them. A pair of rollers usually consists of a driven bottom roller and an upper pressure roller resting against the bottom roller. A delay in the sliver is achieved in that the circumferential speed increases from pair of rolls to pair of rolls in the transport direction of the sliver defined by the direction of rotation of the pairs of rolls.

Eine Streckwerkeinheit mit den Merkmalen nach dem Oberbegriff des Anspruchs 1 ist beispielsweise aus den Druckschriften DE 20 19 352 A1 und DE 39 04 108 A1 bekannt. Bei einer Streckwerkeinheit mit einem Belastungsträger der vorstehend genannten Art handelt es sich um eine Baugruppe eines Streckwerks einer Spinnmaschine, welche aufgrund ihres Aufbaus die Möglichkeit bietet, den Belastungsträger bspw. zur Umstellung bzw. Anpassung des Streckwerks mit den üblicherweise an dem Belastungsträger angeordneten Druckwalzen von den Unterwalzen abzuheben.A drafting unit with the features according to the preamble of claim 1 is, for example, from the publications DE 20 19 352 A1 and DE 39 04 108 A1 known. A drafting unit with a load carrier of the type mentioned above is an assembly of a drafting system of a spinning machine which, due to its design, offers the possibility of moving the load carrier, e.g lift off the bottom rollers.

Bekannte Verstellmöglichkeiten von Belastungsträgern weisen jedoch den Nachteil auf, dass insbesondere bei einer gleichzeitigen Verstellung mehrerer, miteinander gekoppelter Belastungsträger, welche bspw. eine gemeinsame Oberwalze führen und belasten, hohe Betätigungskräfte erforderlich sind. Solche Belastungsträger bedingen zudem eine eng tolerierte bzw. präzise ausgerichtete Position zueinander.Known adjustment options for load carriers, however, have the disadvantage that high actuating forces are required, particularly when a plurality of load carriers coupled to one another are adjusted simultaneously, which, for example, guide and load a common top roller. Such load carriers also require a tightly toleranced or precisely aligned position in relation to one another.

Der Erfindung liegt die Aufgabe zugrunde, ein Streckwerk sowie eine Streckwerkeinheit für ein Streckwerk für eine Spinnmaschine bereitzustellen, wobei die Streckwerkeinheit einen besonders einfachen Aufbau aufweist und eine anwenderfreundliche Bedienung erlaubt, indem insbesondere eine vereinfachtere Betätigung mehrerer, gleichzeitig zu öffnender oder zu schließender Belastungsträger durch Reduzierung des Betätigungskraftaufwandes gewährleistet wird.The object of the invention is to provide a drafting system and a drafting system unit for a To provide a drafting system for a spinning machine, the drafting system unit having a particularly simple structure and allowing user-friendly operation, in particular by simplifying the actuation of several load carriers that can be opened or closed at the same time by reducing the actuation effort.

Die Erfindung löst die Aufgabe durch eine Streckwerkeinheit mit den Merkmalen des Anspruchs 1 sowie durch ein Streckwerk mit den Merkmalen des Anspruchs 8. Vorteilhafte Weiterbildungen der Streckwerkeinheit sind in den abhängigen Ansprüchen angegeben.The invention achieves the object by a drafting unit having the features of claim 1 and by a drafting unit having the features of claim 8. Advantageous developments of the drafting unit are specified in the dependent claims.

Kennzeichnend für die erfindungsgemäße Streckwerkeinheit ist, dass zwei oder mehr Belastungsträger jeweils verdrehfest mit einer Haltestange verbunden sind, die mittels der die wenigstens zwei Belastungsträger gemeinsam verschwenkenden Verstellvorrichtung um ihre Längsachse verdrehbar ist und die an einer Haltestangenaufnahme gelagert ist. Eine verdrehfeste Verbindung zweier oder mehrerer Belastungsträger mit einer zentralen Haltestange ermöglicht es, durch eine einfache Verdrehung der Haltestange um ihre Längsachse eine zuverlässige Verstellung zweier oder mehrerer an der Haltestange angeordneter Belastungsträger zu bewirken. Zur Verstellung der Haltestange dient dabei die Verstellvorrichtung, welche an einer vorbestimmten, für den Anwender/Bediener gut zugänglichen Position eine komfortable Verlagerung der zwei oder mehr Belastungsträger zwischen der Betriebsposition und der Öffnungsstellung erlaubt.A characteristic of the drafting unit according to the invention is that two or more load carriers are each connected in a torsion-proof manner to a holding rod which can be rotated about its longitudinal axis by means of the adjusting device pivoting the at least two load carriers together and which is mounted on a holding rod receptacle. A non-rotatable connection of two or more load carriers to a central support rod makes it possible to effect a reliable adjustment of two or more load carriers arranged on the support rod simply by twisting the support rod about its longitudinal axis. The adjustment device is used to adjust the holding rod, which allows the two or more load carriers to be conveniently shifted between the operating position and the open position at a predetermined position that is easily accessible to the user/operator.

Die Streckwerkeinheit zeichnet sich dadurch aus, dass sie eine zuverlässige Positionierung der Belastungsträger in der gewünschten Lage erlaubt. Darüber hinaus kann auf weitere Verbindungselemente zwischen den Belastungsträgern verzichtet werden. Gegenüber einer Verstellung einzelner Belastungsträger allein weist die mittels der Verstellvorrichtung verstellbare Haltestange zudem den Vorteil auf, dass eine Positionssicherung aller an der Haltestange angeordneten Belastungsträger über eine Arretierung der Haltestange in der gewünschten Position gewährleistet werden kann.The drafting unit is distinguished by the fact that it allows the load carriers to be reliably positioned in the desired position. In addition, further connecting elements between the load carriers can be dispensed with. Compared to an adjustment of individual load carriers alone, the support rod that can be adjusted by means of the adjustment device also has the advantage that the position of all load carriers arranged on the support rod can be secured by locking the support rod in the desired position.

Die Verstellvorrichtung zur Verlagerung der Haltestange kann dabei grundsätzlich beliebig ausgestaltet sein. Nach einer bevorzugten Weiterbildung der Erfindung ist vorgesehen, dass die Verstellvorrichtung eine mit der Haltestange in Wirkverbindung befindliche Kniehebelanordnung aufweist, die zwischen einer der Betriebsposition zugeordneten Schließlage und einer der Öffnungsstellung zugeordneten Öffnungslage verstellbar ist. Die Ausgestaltung der Verstellvorrichtung mit einer Kniehebelanordnung ermöglicht eine besonders komfortable und kraftsparende Verstellung des Belastungsträgers bzw. der Belastungsträger zwischen der Betriebsposition und der Öffnungsstellung. Die Ausgestaltung der Kniehebelanordnung kann dabei unter Berücksichtigung der gewünschten Betätigungskräfte ausgestaltet werden und erlaubt somit eine komfortable Verdrehung der Haltestange und sämtlicher an der Haltestange angeordneter Belastungsträger.In principle, the adjustment device for moving the holding rod can be configured as desired. According to a preferred development of the invention, it is provided that the adjusting device has a toggle lever arrangement which is operatively connected to the holding rod and which can be adjusted between a closed position associated with the operating position and an open position associated with the open position. The design of the adjustment device with a toggle lever arrangement enables a particularly comfortable and energy-saving adjustment of the load carrier or load carriers between the operating position and the open position. The design of the toggle lever arrangement can be designed taking into account the desired actuating forces and thus allows a comfortable twisting of the holding rod and all the load carriers arranged on the holding rod.

Die Ausgestaltung der Kniehebelanordnung ist, wie vorstehend angegeben, grundsätzlich frei wählbar. Nach einer weiteren bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass die Kniehebelanordnung einen ersten Kniehebel und einen zweiten Kniehebel aufweist, wobei der erste Kniehebel um eine erste ortsfest gegenüber der Haltestange angeordnete erste Gelenkachse verschwenkbar ist, der erste sowie der zweite Kniehebel über eine Kniehebelgelenkachse gelenkig verbunden sind, und der zweite Kniehebel einen von der Kniehebelgelenkachse beabstandeten Kniehebelabschnitt aufweist, der mit der Haltestange eine Drehbewegung übertragend verbunden ist.As stated above, the configuration of the toggle lever arrangement can in principle be freely selected. According to a further preferred embodiment of the invention, it is provided that the toggle lever arrangement has a first toggle lever and a second toggle lever, the first toggle lever being pivotable about a first joint axis arranged in a stationary manner opposite the holding rod, the first and the second toggle lever being articulated via a toggle lever joint axis and the second toggle lever has a toggle lever section which is spaced apart from the toggle lever joint axis and which is connected to the holding rod in a manner that transmits a rotational movement.

Gemäß dieser Ausgestaltung der Erfindung ist der erste Kniehebel mit seiner ersten Gelenkachse relativ gegenüber der Haltestange festgelegt. Dies kann bspw. dadurch realisiert werden, dass die Haltestange sowie der erste Kniehebel an einem gemeinsamen Bauelement, bspw. an einem gemeinsamen Abschnitt eines Maschinengestells der Streckwerkeinheit drehbar gelagert sind. Zur Übertragung einer Verstellung der Kniehebelanordnung auf die Haltestange ist der zweite Kniehebel mit seinem zu der Kniehebelgelenkachse beabstandeten Kniehebelabschnitt, welcher insbesondere ein der Kniehebelgelenkachse gegenüberliegendes Kniehebelende sein kann, mit der Haltestange zum Übertragen einer Drehbewegung verbunden, sodass durch eine Verstellung des ersten und zweiten Kniehebels, die insbesondere über eine gemeinsame Kniehebelgelenkachse gelenkig miteinanderverbunden sind, eine Verdrehung der Haltestange bewirkt wird. Eine derartige Ausgestaltung der Streckwerkeinheit zeichnet sich dabei durch ihren besonders einfachen Aufbau aus, welcher gleichzeitig eine zuverlässige Kraftübertragung sowie Festlegung der Betätigungskräfte erlaubt.According to this embodiment of the invention, the first toggle lever is fixed relative to the holding rod with its first joint axis. This can be realized, for example, in that the retaining rod and the first toggle lever are rotatably mounted on a common component, for example on a common section of a machine frame of the drafting unit. To transfer an adjustment of the toggle lever arrangement to the holding rod, the second toggle lever is connected with its toggle lever section spaced apart from the toggle joint axis, which can in particular be a toggle lever end opposite the toggle lever joint axis, to the holding rod for transmitting a rotary movement, so that by adjusting the first and second toggle lever, which are connected to one another in an articulated manner, in particular via a common toggle lever joint axis, causing the holding rod to rotate. Such a configuration of the drafting system unit is characterized by its particularly simple structure, which at the same time allows reliable power transmission and determination of the actuating forces.

Eine Sicherung der Betriebsposition der zwei oder mehr Belastungsträger kann grundsätzlich in beliebiger Weise erfolgen, bspw. durch geeignete Verriegelungselemente, welche die Kniehebelanordnung in der Schließlage arretieren. Nach einer bevorzugten Weiterbildung der Erfindung ist vorgesehen, dass die Kniehebelanordnung in der Schließlage in einer Übertotpunktstellung angeordnet ist. Eine entsprechende Ausgestaltung der Kniehebelanordnung zeichnet sich dadurch aus, dass auf separate Verriegelungselemente für die Schließlage verzichtet werden kann und dabei in besonders einfacher und zuverlässiger Weise verhindert wird, dass die zwei oder mehr Belastungsträger während des Betriebs nicht aufgrund der dann auftretenden Kräfte selbsttätig in Richtung auf die Öffnungsstellung verstellt werden.In principle, the operating position of the two or more load carriers can be secured in any desired manner, for example by means of suitable locking elements which lock the toggle lever arrangement in the closed position. According to a preferred development of the invention, it is provided that the toggle lever arrangement is arranged in the closed position in an over-center position. A corresponding configuration of the toggle lever arrangement is distinguished characterized in that there is no need for separate locking elements for the closed position and it is prevented in a particularly simple and reliable manner that the two or more load carriers are not automatically adjusted in the direction of the open position during operation due to the forces then occurring.

Nach einer weiteren bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass der zweite Kniehebel an einem der Kniehebelgelenkachse gegenüberliegenden Ende über eine zweite Gelenkachse gelenkig mit einem Lenker verbunden ist, der an seinem der zweiten Gelenkachse gegenüberliegenden Ende verdrehfest mit der Haltestange verbunden ist. Gemäß dieser bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass der zweite Kniehebel der Kniehebelanordnung gelenkig mit einem Lenker verbunden ist, welcher mit einem von dem zweiten Kniehebel beabstandeten Lenkerabschnitt verdrehfest mit der Haltestange gekoppelt bzw. an der Haltestange angeordnet ist. Dadurch können Betätigungskräfte weiterhin reduziert bzw. die Bediencharakteristik bei der Verstellung der zwei oder mehr Belastungsträger zwischen der Betriebsposition und der Öffnungsstellung in einem breiten Bereich festgelegt werden.According to a further preferred embodiment of the invention, it is provided that the second toggle lever is articulated at one end opposite the toggle joint axis via a second joint axis to a link which is non-rotatably connected to the holding rod at its end opposite the second joint axis. According to this preferred embodiment of the invention, it is provided that the second toggle lever of the toggle lever arrangement is connected in an articulated manner to a link which, with a link section spaced apart from the second toggle lever, is non-rotatably coupled to the holding rod or is arranged on the holding rod. As a result, actuating forces can be further reduced or the operating characteristics can be fixed in a wide range when adjusting the two or more load carriers between the operating position and the open position.

Eine Betätigung der Verstellvorrichtung, mittels der die Haltestange um ihre Längsachse verdreht wird oder aber eine vorteilhafterweise vorgesehene Kniehebelanordnung zwischen der Schließlage und der Öffnungslage verstellt wird, kann grundsätzlich in beliebiger Weise erfolgen. Denkbar hier ist bspw. die Verwendung von unterschiedlichen elektrisch, hydraulisch oder pneumatisch wirkenden Antrieben. Nach einer bevorzugten Weiterbildung der Erfindung ist jedoch vorgesehen, dass die Kniehebelanordnung mit einem Handhebel zwischen der Betriebsposition und der Schließlage verstellbar ist. Die Verwendung eines Handhebels zeichnet sich durch eine besondere Einfachheit und geringe Fehleranfälligkeit aus, wobei aufgrund der verwendeten Kniehebelanordnung die Betätigungskräfte in einem für einen Nutzer komfortablen Bereich liegen.An actuation of the adjusting device, by means of which the holding rod is rotated about its longitudinal axis or an advantageously provided toggle lever arrangement is adjusted between the closed position and the open position, can in principle take place in any manner. For example, the use of different electrically, hydraulically or pneumatically acting drives is conceivable here. According to a preferred development of the invention, however, it is provided that the toggle lever arrangement can be adjusted between the operating position and the closed position using a hand lever. The use of a hand lever is characterized by particular simplicity and low susceptibility to errors, with the operating forces being in a comfortable range for a user due to the toggle lever arrangement used.

Die Verbindung zwischen dem Handhebel und der Kniehebelanordnung kann dabei im Rahmen der konstruktiven Gegebenheiten frei gewählt werden. Nach einer weiteren bevorzugten Ausgestaltung der Erfindung ist vorgesehen, dass der Handhebel gemeinsam mit dem ersten Kniehebel um die erste Gelenkachse schwenkbar ist. Eine verschwenkbare Lagerung des Handhebels um die erste Gelenkachse des ersten Kniehebels ermöglicht einen besonders kompakten und einfachen Aufbau, nachdem auf eine weitere Lagerachse für den Handhebel verzichtet werden kann. Weiter bevorzugt ist der Handhebel mit dem ersten Kniehebel starr verbunden, insbesondere einstückig ausgebildet. Die starre Verbindung des Handhebels mit dem ersten Kniehebel ermöglicht in ergänzender Weise einen einfacheren Aufbau sowie eine kraftsparendere und komfortablere Verstellung der Kniehebelanordnung zwischen der Schließ-und der Öffnungslage. Alternativ dazu ist es denkbar, den Handhebel mit der Kniehebelanordnung mittels Eingriffselementen in Eingriff bringbar vorzusehen, so dass eine Betätigung des Handhebels über die Eingriffselemente, welche den Handhebel mit der Kniehebelanordnung kraftübertragend koppeln, zu einer Betätigung bzw. die Haltestange drehende Bewegung der Kniehebelanordnung führt. Diese alternative Ausgestaltung ermöglicht im Vergleich zu einer starren Verbindung einen zusätzlichen Freiheitsgrad für die konstruktive Auslegung und Anordnung der die Verstellvorrichtung ausmachenden Komponenten. Die Eingriffselemente können beispielsweise durch eine Aussparung und ein mit der Aussparung zusammenwirkender Steg, Bolzen, Vorsprung oder ähnliches ausgebildet sein, wobei eines der Komponenten aus Handhebel und Kniehebelanordnung die Aussparung und die andere Komponente das mit der Aussparung zusammenwirkende Bauteil aufweist. In diesem Zuge sind auch lösbare Rastverbindungen als Eingriffselemente denkbar.The connection between the hand lever and the toggle lever arrangement can be freely selected within the framework of the structural conditions. According to a further preferred embodiment of the invention, it is provided that the hand lever can be pivoted about the first joint axis together with the first toggle lever. A pivotable mounting of the hand lever about the first articulation axis of the first toggle lever enables a particularly compact and simple design, since a further bearing axis for the hand lever can be dispensed with. More preferably, the hand lever is rigidly connected to the first toggle lever, in particular formed in one piece. In addition, the rigid connection of the hand lever to the first toggle lever enables a simpler construction and a more effortless and more comfortable adjustment of the toggle lever arrangement between the closed and the open position. Alternatively, it is conceivable to provide the hand lever with the toggle lever arrangement that can be brought into engagement by means of engagement elements, so that actuation of the hand lever via the engagement elements, which couple the hand lever to the toggle lever arrangement in a force-transmitting manner, leads to an actuation or rotating movement of the toggle lever arrangement. Compared to a rigid connection, this alternative configuration allows an additional degree of freedom for the structural design and arrangement of the components that make up the adjustment device. The engagement elements can be formed, for example, by a recess and a web, bolt, projection or the like interacting with the recess, one of the components consisting of the hand lever and toggle lever arrangement having the recess and the other component having the component interacting with the recess. In this context, detachable locking connections are also conceivable as engagement elements.

Kennzeichnend für das erfindungsgemäße Streckwerk ist, dass dieses eine Streckwerkeinheit aufweist, bei der zwei oder mehrere Belastungsträger verdrehfest mit einer gemeinsamen Haltestange verbunden sind, die mittels einer Verstellvorrichtung zwischen einer Betriebsposition und einer Öffnungsstellung der Belastungsträger um ihre Längsachse verdrehbar ist. Die Haltestange ist dabei drehbar an einer Haltestangenaufnahme gelagert und erlaubt durch ihre Verdrehbarkeit eine zuverlässige Verstellung und Positionierung aller an der Haltestange angeordneten Belastungsträger. Eine Positionssicherung der Belastungsträger kann zudem zentral über die Verstellvorrichtung erreicht werden, sodass auf einzelne Arretierungen für jeden Belastungsträger verzichtet werden kann. Weitere Ausgestaltungen des Streckwerks ergeben sich aus den vorstehend dargestellten möglichen Weiterbildungen der Streckwerkeinheit.It is characteristic of the drafting system according to the invention that it has a drafting system unit in which two or more load carriers are connected in a torque-proof manner to a common holding rod which can be rotated about its longitudinal axis between an operating position and an open position of the load carrier by means of an adjusting device. The support rod is rotatably mounted on a support rod receptacle and, due to its rotatability, allows reliable adjustment and positioning of all load carriers arranged on the support rod. The position of the load carrier can also be secured centrally via the adjustment device, so that individual locks for each load carrier can be dispensed with. Further configurations of the drafting system result from the possible developments of the drafting system unit presented above.

Ein Ausführungsbeispiel der Erfindung wird nachstehend mit Bezug auf die Zeichnung erläutert.An embodiment of the invention is explained below with reference to the drawing.

In den Zeichnungen zeigen:

Figur 1
eine Seitenansicht einer Streckwerkeinheit einer Spinnmaschine in einer Betriebsposition eines Belastungsträgers;
Figur 2
eine Seitenansicht der Streckwerkeinheit von Figur 1 in einer Öffnungsstellung des Belastungsträgers und
Figur 3
eine Draufsicht auf die Streckwerkeinheit von Figur 1 in der Betriebsposition.
In the drawings show:
figure 1
a side view of a drafting unit of a spinning machine in an operating position of a load carrier;
figure 2
a side view of the drafting unit of figure 1 in an open position of the loading beam and
figure 3
a plan view of the drafting unit of figure 1 in the operating position.

Eine in Figur 1 dargestellte Streckwerkeinheit 1 einer hier nicht näher dargestellten Spinnmaschine dient dazu, ein Faserband zwischen den an einem Tragarm 16 eines Belastungsträgers 3 angeordneten Druckwalzen 15a, 15b, 15c und den weiteren Unterwalzen 14a, 14b, 14c des hier nicht dargestellten Streckwerks zu verstrecken. Hierzu weisen die jeweils aus einer Unterwalze 14a, 14b, 14c und einer Druckwalze 15a, 15b, 15c gebildeten Walzenpaare eine unterschiedliche, in Transportrichtung zunehmende Rotationsgeschwindigkeit auf, um so im Bereich zwischen den Walzenpaaren eine Verstreckung des Faserbands zu bewirken.one inside figure 1 The drafting unit 1 shown of a spinning machine, not shown here, serves to stretch a sliver between the pressure rollers 15a, 15b, 15c arranged on a support arm 16 of a loading carrier 3 and the other lower rollers 14a, 14b, 14c of the drafting system, not shown here. For this purpose, the roller pairs formed from a bottom roller 14a, 14b, 14c and a pressure roller 15a, 15b, 15c have a different, increasing rotational speed in the direction of transport, in order to bring about a stretching of the sliver in the region between the pairs of rollers.

In dem dargestellten Ausführungsbeispiel weist die Streckwerkeinheit 1 zwei parallel zueinander an einer Haltestange 4 angeordnete Belastungsträger 3 mit jeweils einem Tragarm 16 auf, welche jeweils drei aus zwei Druckwalzen 15a, 15b, 15c gebildete Druckwalzenpaare aufweisen, deren Drehachsen senkrecht zur Längsachse des zugeordneten Tragarmes 16 verlaufen. Die Tragarme 16 sind dabei jeweils starr mit zwei beiderseits des Tragarmes 16 angeordneten Stützkörper 17 verbunden, die wiederum verdrehfest mit einer Haltestange 4 verbunden sind (vgl. Figur 3).In the exemplary embodiment shown, the drafting system unit 1 has two load carriers 3 arranged parallel to one another on a holding rod 4, each with a support arm 16, which each have three pressure roller pairs formed from two pressure rollers 15a, 15b, 15c, the axes of rotation of which run perpendicular to the longitudinal axis of the associated support arm 16 . The support arms 16 are each rigidly connected to two supporting bodies 17 which are arranged on both sides of the support arm 16 and which in turn are connected in a torsion-proof manner to a holding rod 4 (cf. figure 3 ).

In der in Figur 1 dargestellten Betriebsposition der Tragarme 16 befinden sich die Druckwalzen 15a, 15b, 15c in Anlage an den Unterwalzen 14a, 14b, 14c, um so das zwischen diesen angeordnete Faserband zu verstrecken. Zur Bestückung bzw. zur Einrichtung der Spinnmaschine ist es erforderlich, das Faserband zwischen den Unterwalzen, 14a, 14b, 14c und den Druckwalzen 15a, 15b, 15c anzuordnen. Hierzu können die Belastungsträger 3 aus der in Figur 1 dargestellten Betriebsposition in eine in Figur 2 dargestellte Öffnungsstellung verschwenkt werden, in der die Druckwalzen 15a, 15b, 15c von den Unterwalzen 14a, 14b, 14c abgehoben sind.in the in figure 1 In the illustrated operating position of the support arms 16, the pressure rollers 15a, 15b, 15c are in contact with the lower rollers 14a, 14b, 14c, so as to stretch the sliver arranged between them. To equip or set up the spinning machine, it is necessary to arrange the sliver between the bottom rollers 14a, 14b, 14c and the pressure rollers 15a, 15b, 15c. For this purpose, the load carriers 3 from the in figure 1 illustrated operating position to an in figure 2 shown open position are pivoted, in which the pressure rollers 15a, 15b, 15c are lifted from the lower rollers 14a, 14b, 14c.

Zur Verstellung der Belastungsträger 3 aus der Betriebsposition in die Öffnungsstellung ist eine Verstellvorrichtung 2 vorgesehen, welche den Tragarm 16 gemeinsam mit den mit dem Tragarm 16 verbundenen Stützkörpern 17 um eine Längsachse der Haltestange 4 verschwenkt. Eine Verschwenkung resultiert dabei aus einer Verdrehung der Haltestange 4, welche drehbar an einer Haltestangenaufnahme 5, bspw. einem Maschinengehäuse, gelagert ist. Eine Verdrehung der Haltestange 4 in der Haltestangenaufnahme 5 bewirkt aufgrund der verdrehfesten Anordnung der Stützkörper 17 an der Haltestange 4 eine Verlagerung des Belastungsträgers 3 entsprechend der durch die Verstellvorrichtung bewirkten Drehbewegung der Haltestange 4.To adjust the load carrier 3 from the operating position to the open position, an adjustment device 2 is provided, which pivots the support arm 16 together with the supporting bodies 17 connected to the support arm 16 about a longitudinal axis of the holding rod 4 . Pivoting results from a twisting of the support rod 4, which is rotatably mounted on a support rod receptacle 5, for example a machine housing. Due to the non-rotatable arrangement of the supporting bodies 17 on the retaining rod 4, a rotation of the retaining rod 4 in the retaining rod receptacle 5 causes a displacement of the load carrier 3 in accordance with the rotational movement of the retaining rod 4 caused by the adjustment device.

Zur Verstellung der Haltestange 4 weist dabei die Verstellvorrichtung 2 eine Kniehebelanordnung 6 auf, welche mittels eines Handhebels 13 zwischen einer der Betriebsposition zugeordneten Schließlage und einer der Öffnungsstellung zugeordneten Öffnungslage verstellbar ist.To adjust the holding rod 4, the adjusting device 2 has a toggle lever arrangement 6, which can be adjusted by means of a hand lever 13 between a closed position associated with the operating position and an open position associated with the open position.

Die Kniehebelanordnung 6 weist einen ersten Kniehebel 7 auf, welcher nach einem bevorzugten Ausführungsbeispiel an der Haltestangenaufnahme 5 um eine erste Gelenkachse 9 verschwenkbar ist. Nach einem weiteren bevorzugten, nicht dargestellten Ausführungsbeispiel sind die Haltestangenaufnahme und die erste Gelenkachse voneinander beabstandet angeordnet. An dem der ersten Gelenkachse 9 gegenüberliegenden Ende ist der erste Kniehebel 7 über eine Kniehebelgelenkachse 11 mit dem zweiten Kniehebel 8 verbunden. Der zweite Kniehebel 8 ist an einem von der Kniehebelgelenkachse 11 beabstandeten Kniehebelabschnitt, in diesem bevorzugten Ausführungsbeispiel an dem der Kniehebelgelenkachse 11 gegenüberliegenden Ende des zweiten Kniehebels 8, über eine zweite Gelenkachse 10 mit einem Lenker 12 verbunden, welcher an dem der zweiten Gelenkachse 10 gegenüberliegenden Ende verdrehfest mit der Haltestange 4 verbunden ist, sodass die Verdrehung des Lenkers 12 eine Verstellung der Haltestange 4 und damit eine Verlagerung des Belastungsträgers 3 bewirkt. Zur Verstellung der Kniehebelanordnung 6 dient ein Handhebel 13, welcher um die erste Gelenkachse 9 verschwenkbar ist und mit der Kniehebelanordnung 6 zusammenwirkt. Nach einem bevorzugten Ausführungsbeispiel ist der Handhebel 13 starr mit dem ersten Kniehebel 7 verbunden, wodurch eine Bewegung des Handhebels 13 unmittelbar zu einer Betätigung des ersten Kniehebels 7 führt. In bevorzugter Weise sind der Handhebel 13 und der erste Kniehebel 7 aus einem Materialstück ausgebildet. In alternativ bevorzugter Weise können der Handhebel 13 und der erste Kniehebel aus zwei Materialstücken ausgebildet sein, welche bspw. durch übliche Maßnahmen des Form-, Stoff- oder Kraftschlusses miteinander verbunden sind.The toggle lever arrangement 6 has a first toggle lever 7 which, according to a preferred exemplary embodiment, can be pivoted about a first joint axis 9 on the holding rod receptacle 5 . According to a further preferred exemplary embodiment, which is not shown, the holding rod receptacle and the first joint axis are arranged at a distance from one another. To the the end opposite the first joint axis 9 , the first toggle lever 7 is connected to the second toggle lever 8 via a toggle joint axis 11 . The second toggle lever 8 is connected at a toggle lever section spaced apart from the toggle joint axis 11, in this preferred exemplary embodiment at the end of the second toggle lever 8 opposite the toggle lever joint axis 11, via a second joint axis 10 to a link 12, which is at the end opposite the second joint axis 10 is non-rotatably connected to the support rod 4, so that the twisting of the link 12 causes an adjustment of the support rod 4 and thus a displacement of the load carrier 3. A hand lever 13 which can be pivoted about the first joint axis 9 and interacts with the toggle lever arrangement 6 serves to adjust the toggle lever arrangement 6 . According to a preferred exemplary embodiment, the hand lever 13 is rigidly connected to the first toggle lever 7, as a result of which a movement of the hand lever 13 leads directly to an actuation of the first toggle lever 7. The hand lever 13 and the first toggle lever 7 are preferably formed from one piece of material. In an alternative preferred manner, the hand lever 13 and the first toggle lever can be formed from two pieces of material which are connected to one another, for example, by means of the usual measures of positive, material or non-positive locking.

Zur Verstellung der Kniehebelanordnung 6 aus der in Figur 1 dargestellten Schließlage in die in Figur 2 dargestellte Öffnungslage, überführt der Handhebel 13 die Kniehebelanordnung 6 aus einer Übertotpunktstellung in die Öffnungslage. Zur Verlagerung des Belastungsträgers 3 in die Betriebsposition ist lediglich eine entgegengesetzte Rückverlagerung des Handhebels 13 aus der in Figur 2 dargestellten Öffnungsstellung in die in Figur 1 dargestellte Betriebsposition erforderlich, wobei der Handhebel 13 die Kniehebelanordnung 6 in die Übertotpunktstellung überführt.To adjust the toggle lever arrangement 6 from the in figure 1 shown closed position to the in figure 2 shown open position, the hand lever 13 transfers the toggle lever arrangement 6 from an over-center position into the open position. To move the load carrier 3 into the operating position, the hand lever 13 must only be moved back in the opposite direction from the position in figure 2 illustrated opening position to the in figure 1 shown operating position required, the hand lever 13 converts the toggle lever assembly 6 in the over-center position.

Bezugszeichenlistereference list

11
Streckwerkeinheitdrafting unit
22
Verstellvorrichtungadjusting device
33
Belastungsträgerload carrier
44
Haltestangehandrail
55
Haltestangenaufnahmehandrail mount
66
Kniehebelanordnungtoggle assembly
77
erster Kniehebelfirst toggle
88th
zweiter Kniehebelsecond knee lever
99
erste Gelenkachsefirst joint axis
1010
zweite Gelenkachsesecond joint axis
1111
KniehebelgelenkachseToggle joint axis
1212
Lenkerhandlebars
1313
Handhebelhand lever
14a, 14b, 14c14a, 14b, 14c
Unterwalzenbottom rollers
15a, 15b, 15c15a, 15b, 15c
Druckwalzenpressure rollers
1616
TragarmBeam
1717
Stützkörpersupporting body

Claims (8)

  1. Drafting system unit for a spinning machine, comprising at least two weighting arms (3), which can be pivoted between an operating position and an open position by means of a repositioning device (2),
    characterised in that
    the at least two weighting arms (3) are each connected to a retaining rod (4) for conjoint rotation, which retaining rod (4) is mounted on a retaining rod holder (5) for rotation about the longitudinal axis of the retaining rod (4) by means of the repositioning device (2) which jointly pivots the at least two weighting arms (3).
  2. Drafting system unit according to claim 1, characterised in that the repositioning device (2) has a knee lever assembly (6), which is operatively connected to the retaining rod (4) and which can be repositioned between a closing position associated with the operating position and an opening position associated with the open position.
  3. Drafting system unit according to claim 2, characterised in that in the closing position the knee lever assembly (6) is arranged in a position beyond dead centre.
  4. Drafting system unit according to claim 2 or 3, characterised in that the knee lever assembly (6) has a first knee lever (7) and a second knee lever (8),
    - the first knee lever (7) being pivotable about a first joint axis (9), which is stationary relative to the retaining rod (4),
    - the first knee lever (7) and the second knee lever (8) being articulated to each other by means of a knee lever joint axis (11), and
    - the second knee lever (8) having a knee lever portion spaced apart from the knee lever joint axis (11), which knee lever portion is connected to the retaining rod (4) so as to transmit a rotational motion.
  5. Drafting system unit according to claim 4 , characterised in that the second knee lever (8) is articulated, at an end opposite the knee lever joint axis and constituting a knee lever portion, to a link (12) by means of a second joint axis (10), which link (12) is connected, at the end thereof opposite the second joint axis (10), to the retaining rod (4) for conjoint rotation.
  6. Drafting system unit according to claim 5, characterised in that the knee lever assembly (6) can be repositioned between the operating position and the closing position by means of a hand lever (13).
  7. Drafting system unit according to claim 6, characterised in that the hand lever (13) can be pivoted, together with the first knee lever (7), about the first joint axis (9).
  8. Drafting system for a spinning machine, comprising a drafting system unit (1), which has at least two weighting arm (3), which can be pivoted between an operating position and an open position by means of a repositioning device (2),
    characterised in that
    the drafting system unit (1) is configured according to one or more of claims 1 to 7.
EP19175866.3A 2018-05-24 2019-05-22 Drafting frame and drafting unit for a spinning machine Active EP3572568B8 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018112422.8A DE102018112422A1 (en) 2018-05-24 2018-05-24 Drawframe and plug-in unit for a spinning machine

Publications (3)

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EP3572568A1 EP3572568A1 (en) 2019-11-27
EP3572568B1 true EP3572568B1 (en) 2022-07-27
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US (1) US11879186B2 (en)
EP (1) EP3572568B8 (en)
JP (1) JP7437881B2 (en)
KR (1) KR20190134526A (en)
CN (1) CN110528126B (en)
DE (1) DE102018112422A1 (en)
ES (1) ES2928624T3 (en)
RU (1) RU2019115880A (en)
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Family Cites Families (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US715502A (en) * 1902-01-02 1902-12-09 Thomas E Norman Top-roll saddle.
US905668A (en) * 1904-03-28 1908-12-01 Ezra Dixon Spinning-machine.
US1218659A (en) * 1911-10-20 1917-03-13 Lewis T Houghton Top-roll-saddle mechanism.
US1265306A (en) * 1917-09-06 1918-05-07 Ezra Dixon Top-roll saddle.
US1448192A (en) * 1920-12-03 1923-03-13 Butler Arthur Cecil Drawing mechanism
US1428271A (en) * 1921-02-18 1922-09-05 Butler Arthur Cecil Drawing mechanism
US1449929A (en) * 1922-07-14 1923-03-27 Woonsocket Machine & Press Co Weighting device for drawing frames
US1485871A (en) * 1923-07-05 1924-03-04 Sacolowell Shops Spinning frame
US1623688A (en) * 1925-11-20 1927-04-05 Thomas W Lawton Top-roll saddle
US1673448A (en) * 1927-04-18 1928-06-12 Fyans Res Co Top-roll-saddle mechanism
US1932799A (en) * 1931-04-22 1933-10-31 Morton Charles Spinning frame
US2032298A (en) * 1932-03-24 1936-02-25 Morton Charles Weighting means for spinning frames
US1959872A (en) * 1933-01-30 1934-05-22 Mcbee Luther Pressure means for fiber preparation machinery
US1991873A (en) * 1933-11-10 1935-02-19 James C Stubbs Means for relieving pressure on top rolls
US2075484A (en) * 1935-04-17 1937-03-30 Whitin Machine Works Top roll saddle
US2263975A (en) * 1938-10-21 1941-11-25 Whitin Machine Works Pressure applying means for spinning frames
US2565228A (en) * 1948-09-03 1951-08-21 Saco Lowell Shops Drawing mechanism for spinning and roving frames
DE970249C (en) * 1949-05-29 1958-08-28 Skf Kugellagerfabriken Gmbh Drafting system for spinning machines
FR1062052A (en) * 1951-06-11
US2787025A (en) * 1951-09-29 1957-04-02 Solanas Ramon Balmes Drawing mechanism for textile machines
US2834996A (en) * 1954-08-16 1958-05-20 Dixon Corp Saddle for spinning frame or the like
US2807053A (en) * 1955-12-09 1957-09-24 Bahnson Co Weight wire locating means for spinning frames
US2943364A (en) * 1956-06-13 1960-07-05 Estirajes Balmes S A Drawing mechanisms for textile rovings
US2947039A (en) * 1957-08-20 1960-08-02 Dixon Corp Roller mounting for spinning machines
DE1088850B (en) * 1958-10-25 1960-09-08 Skf Kugellagerfabriken Gmbh Top roller support and loading arm for spinning machine drafting systems
FR1450398A (en) * 1964-01-16 1966-06-24 Rech S De Materiel Textile Soc Improvements made to winders
CH469830A (en) * 1967-07-13 1969-03-15 Rieter Ag Maschf Upper roller saddle arrangement for spinning machine drafting systems
DE1710058A1 (en) * 1967-12-09 1971-09-23 Zinser Textilmaschinen Gmbh Drafting system
GB1302911A (en) * 1969-06-30 1973-01-10
US3606646A (en) * 1969-08-28 1971-09-21 Maremont Corp Drafting roll weighting mechanism
DE2019352C3 (en) * 1970-04-22 1974-12-19 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Upper roll support and loading device
US3732596A (en) * 1971-06-16 1973-05-15 Schaeffler Ohg Industriewerk Top roll loading system for drafting units
US3748694A (en) * 1971-11-03 1973-07-31 Schaeffler Ohg Industriewerk Drafting system having a supporting roll for offset top feed roll
JPS5039518U (en) * 1973-08-08 1975-04-23
JPS5831899Y2 (en) 1978-10-03 1983-07-14 日本精工株式会社 Waiting arm locking device
IT1140368B (en) * 1981-01-02 1986-09-24 Skf Kugellagerfabriken Gmbh WINDER LOCKING DEVICE IN WIRING IRONERS
DE3209210C2 (en) * 1982-03-13 1985-11-21 SKF GmbH, 8720 Schweinfurt Support arm for double top rollers of spinning machine drafting systems
CH658474A5 (en) * 1982-05-18 1986-11-14 Skf Kugellagerfabriken Gmbh Luntensperrvorrichtung to spin machine works expanded.
DE3404291A1 (en) * 1984-02-08 1985-08-08 Zinser Textilmaschinen Gmbh, 7333 Ebersbach SPINNING MACHINE STRETCHER
IT1183194B (en) * 1984-02-21 1987-10-05 Zinser Textilmaschinen Gmbh FLYER
DE3606609A1 (en) * 1986-02-28 1987-09-03 Zinser Textilmaschinen Gmbh LUNTENSTOPP DEVICE ON THE STRETCHER OF A SPINNING MACHINE
FR2619830B1 (en) * 1987-08-28 1989-11-24 Devtex DEVICE FOR DRAWING FIBER CORDS OR RIBBONS ON A SPINNING MACHINE
EP0357894A1 (en) * 1988-09-03 1990-03-14 Zinser Textilmaschinen GmbH Device for stopping the sliver in a drafting arrangement of a spinning machine
DE3927936A1 (en) * 1988-09-29 1990-04-05 Fehrer Ernst DEVICE FOR PRODUCING A YARN
DE3837667A1 (en) * 1988-11-05 1990-05-10 Zinser Textilmaschinen Gmbh LOAD CARRIERS FOR SPREADER MACHINES
DE3904108A1 (en) * 1989-02-11 1990-08-16 Zinser Textilmaschinen Gmbh LOAD CARRIERS FOR STRETCH WORKS
US5172542A (en) * 1989-07-11 1992-12-22 Fritz Stahlecker Spinning machine for pneumatic false-twist spinning
US5343689A (en) * 1990-03-22 1994-09-06 Howa Machinery, Ltd. Method and apparatus for synchronously piecing roving for a continuous feeding thereof to a ring spinning frame
DE19652062A1 (en) * 1996-12-13 1998-06-18 Zinser Textilmaschinen Gmbh Spinning machine drafting system
DE19727575C2 (en) 1997-06-28 2003-11-06 Zinser Textilmaschinen Gmbh Method of manufacturing a textile yarn and device
EP0893519B1 (en) * 1997-07-17 2002-11-06 Zinser Textilmaschinen GmbH Sliver condenser in a drawing frame of a spinning machine
IT1320413B1 (en) * 2000-06-08 2003-11-26 Marzoli Spa POSITIONING FRAME FOR IRONING AND COMPACTION GROUPS DEFASES OF TEXTILE FIBERS.
DE10161522A1 (en) * 2001-12-14 2003-06-18 Rieter Ag Maschf Spinning machine has controlled drive for drawing unit cylinders, using frequency converter set by machine control, together with start unit at computer to vary predraft action
DE10317430B4 (en) 2003-04-15 2011-05-12 Rieter Ingolstadt Gmbh Textile machine with a drafting system
DE102004026519A1 (en) 2004-05-21 2005-12-15 Spindelfabrik Süssen Schurr Stahlecker & Grill GmbH Device on a spinning machine for drawing and compacting a staple fiber strand
DE102005026792B4 (en) * 2005-06-10 2020-10-22 Saurer Spinning Solutions Gmbh & Co. Kg Top roller support and loading arm
US20070111000A1 (en) * 2005-11-16 2007-05-17 Ladama, Llc A Nevada Llc Filament networks and methods of making same for use in the manufacture of products with enhanced characteristics
US8850784B2 (en) * 2005-11-16 2014-10-07 Lorica International Corporation Fire retardant compositions and methods and apparatuses for making the same
DE102006020419B4 (en) * 2006-04-24 2022-08-18 Wilhelm Stahlecker Gmbh Loading unit for a loading carrier of a drafting system
DE102006029132A1 (en) * 2006-06-22 2007-12-27 Rieter Ingolstadt Spinnereimaschinenbau Ag Making support frame to carry stretching rollers used e.g. in textile industry, cuts side frames from sheet metal by laser, without subsequent mechanical treatment of cut edges
JP2011231427A (en) * 2010-04-27 2011-11-17 Murata Mach Ltd Draft device and draft device unit
CN103820891B (en) * 2014-03-06 2015-03-04 江南大学 Three-stage traction spinning method
DE102016006066A1 (en) * 2016-05-19 2017-11-23 Khs Corpoplast Gmbh Mold for molding hollow bodies from preforms

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US11879186B2 (en) 2024-01-23
CN110528126B (en) 2022-07-01
JP2019203236A (en) 2019-11-28
TW202003937A (en) 2020-01-16
ES2928624T3 (en) 2022-11-21
CN110528126A (en) 2019-12-03
KR20190134526A (en) 2019-12-04
RU2019115880A (en) 2020-11-23
EP3572568B8 (en) 2022-10-19
EP3572568A1 (en) 2019-11-27
DE102018112422A1 (en) 2019-11-28
JP7437881B2 (en) 2024-02-26

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