EP2083101A2 - Device for fixing a support of a drafting unit - Google Patents

Device for fixing a support of a drafting unit Download PDF

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Publication number
EP2083101A2
EP2083101A2 EP20090000539 EP09000539A EP2083101A2 EP 2083101 A2 EP2083101 A2 EP 2083101A2 EP 20090000539 EP20090000539 EP 20090000539 EP 09000539 A EP09000539 A EP 09000539A EP 2083101 A2 EP2083101 A2 EP 2083101A2
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EP
European Patent Office
Prior art keywords
lever
support
arm
lever arm
support rod
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.)
Granted
Application number
EP20090000539
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German (de)
French (fr)
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EP2083101A3 (en
EP2083101B1 (en
Inventor
Jürgen Schlegel
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
Original Assignee
Oerlikon Textile Components GmbH
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Publication of EP2083101A2 publication Critical patent/EP2083101A2/en
Publication of EP2083101A3 publication Critical patent/EP2083101A3/en
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Publication of EP2083101B1 publication Critical patent/EP2083101B1/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
    • D01H5/56—Supports for drafting elements
    • D01H5/565—Top roller arms

Definitions

  • the present invention relates to a device for fastening a support of a drafting system according to the preamble of claim 1.
  • Drafting machines for spinning machines comprise a top roller support and loading arm pivotally mounted to a support and releasably secured to the support bar by means of a device.
  • a plurality of top roller carrying and loading arms of drafting units are arranged side by side on the machine-length support rod of a spinning machine.
  • a two-plate support is fixed by means of a fixing screw fixed to the support rod by the support rod has a bore for the arrangement of a support into which the fastening screw engages, such as from the DE-AS 1 133 289 is known.
  • the bore in the holding rod can be damaged by the application of the torque for tightening the fastening screw.
  • the torque occurring during operation at the drafting device is also largely absorbed by the fastening screw projecting into the bore, with the result that the fastening screw operates in the bore, which leads to further damage to the retaining rod.
  • the DE 26 49 207 A1 also describes a device for fixing a support, in which the support of the support rod applied to the top roller support and loading arm is fixed by means of a leaf spring designed as a lever arm.
  • the lever arm is pivotally mounted about an axis parallel to the support rod arranged pivot axis and is positioned by means of an acting on the lever arm adjusting screw to fix the set inclination of the support relative to the support rod.
  • a disadvantage here proves that the lever arm for the arrangement of the support on the support rod by an operator must be kept in a position in which the lever arm can not engage with one of the holding rod arranged recesses. Furthermore occurs during operation, a torque on the drafting system, which causes a counter to the force exerted by the adjusting force counterforce, by which the set in the unloaded state of the drafting system inclination of the support is variable.
  • the object of the present invention is to provide a device for fastening a support to a support rod, by means of which the aforementioned disadvantages of the prior art can be avoided.
  • the device has a two-axis lever pivotable about an axis parallel to the support rod pivot axis, wherein the lever comprises a first lever arm, which for fixing the support of the Upper roller carrying and loading arm can be brought into engagement with a recess provided in the holding rod and a second lever arm, on which acts a means for positioning the lever in a transport and mounting position or a mounting position.
  • the device makes it easy to arrange the support on the support rod by the lever of the device according to the invention in a transport and mounting position can be transferred and positioned in this. Accidental intervention of the first lever arm in one of the recesses on the support rod is avoided.
  • the first lever arm engaging in the recess may have a convexly curved outer contour of the end face, wherein the radius of curvature of the end face corresponds to the distance of the outer contour from the center of the pivot axis of the lever.
  • the fact that the radius of curvature of the end face at the same time corresponds to the axial extent of the first lever arm between the edge of the end face and the center of the pivot axis, resulting from the torque occurring during operation of the drafting is directly directed to the pivot axis.
  • damage to the mounting-relevant surfaces, in particular on the support rod can be avoided.
  • the lever may be formed substantially L-shaped.
  • the first lever arm and the second lever arm can be designed so that they form an angle ⁇ between 80 ° and 120 ° between their longitudinal axes.
  • the means for positioning the lever may be a screw.
  • the substantially L-shaped configuration of Levers allows the positioning of the lever by the pivoting about the pivot axis for transport and assembly purposes such that the second lever arm of the lever rests on the tightened screw and is held in the transport and mounting position, while the first lever arm out of engagement with the recess located on the handrail.
  • the support of the upper roller support and loading arm can be applied in this position of the lever for mounting on the support rod and freely displaceable in the axial and radial directions.
  • the first lever arm engages the recess on the support rod after the lever has been pivoted in the direction of the support rod by unscrewing the screw. After pivoting, the screw is tightened again, so that it matures on the side facing away from the first lever arm side of the second lever arm and fixes the lever in this position.
  • the required tightening torque of the screw is very low, since only the forces of the screw must be absorbed by the inventive structural design of the lever, which occur when closing to overcome the locking position of the upper roller support and loading arm. The caused by the torque during operation of the drafting forces act directly on the pivot axis but not on the screw. As a result, damage to the assembly-related components can be avoided.
  • FIG. 1 shows a partially cutaway side view of a support 2 of a top roller support and loading arm 1 of a drafting system for spinning machines.
  • the upper roller carrying and loading arm 1 is pivotally mounted in the support 2 and actuated via an operating lever 10.
  • the support 2 is rotatably held by means of a device on a stationary support rod 3 of the spinning machine.
  • the top roller supporting and loading arm 1 has links 4, 5, 6 for a respective upper roller arranged as a delivery roller 7, as a center roller 8 and as an input roller 9.
  • the upper rollers of the drafting system are preferably designed as twin rollers and are mounted with their axes in the receptacles of the links 4, 5, 6.
  • a support arranged in the device 2 which comprises a two-armed lever 12, which is arranged about an axially parallel to the support rod 3 pivot axis 14 in a transport and mounting position , as in Fig. 1 represented, or in a fastening position, as in Fig. 3 represented, is convertible.
  • Fig. 2 represents one opposite the representation in Fig. 1 enlarged detail I of the partial section according to Fig. 1 in which the device according to the invention in the support 2 is clearly visible.
  • the pivot axis 14 is disposed within the support 2.
  • the lever 12 is substantially L-shaped and has a first lever arm 15 with a convexly curved outer contour of the end face, which can be brought into engagement with a recess 11 on the support rod 3, and a second lever arm 16 on which the adjusting screw 13 attacks.
  • the first lever arm 15 and the second lever arm 16 extend from the center of the pivot axis 14, wherein the longitudinal axes of the first lever arm 15 and the second lever arm 16 form an angle ⁇ between 80 ° and 120 °.
  • the end face of the first lever arm 15 of the support rod 3 is positioned facing away by being pivoted away from the recess 11 in the direction of the adjusting screw 13.
  • the adjusting screw 13 is tightened so that it protrudes into the support 2.
  • the second lever arm 16, which is aligned in this position substantially perpendicular to the support rod 3, on the screw 13.
  • the support rod 3 is provided with a substantially wedge-shaped recess 11. After pushing on the upper roller support and loading arm 1 the support rod 3, the screw 13 is rotated so that the lever 12 can be pivoted to its mounting position, as in the 3 and 4 darg Jr.
  • FIG. 3 shows the upper roller carrying and loading arm 1, which is fixed by means of the device according to the invention on the support rod 3.
  • a torque M the effective direction is indicated by the arrow.
  • the detailed view III in Fig. 4 represents the lever 12 of the device in a relation to the Fig. 3
  • the first lever arm 15 In the mounting position of the lever 12 is the first lever arm 15 with its curved outer contour of the end face having a radius R, in the wedge-shaped recess 11 of the support rod 3, while the adjusting screw 13 on the second lever arm sixteenth abuts and holds the lever 12 in this position.
  • the radius R of the curvature of the outer contour of the end face of the first lever arm 15 corresponds to the distance from the edge of the end face of the first lever arm 15 to the center M of the pivot axis 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

The device has a double-arm lever swivelable around a swiveling axis (14) arranged axial-parallel to a holding rod (3). An L-shaped lever (12) has two lever arms, where one of the lever arms is brought in contact with a recess provided in the rod for fixing of a support (2) of an upper roller-supporting-and loading arm (1). A screw (13) for positioning the lever in a transport and mounting position or a fixing position is engaged at another lever arm. The lever arms are designed such that the arms include an angle between 80 degree and 120 degree between longitude axes.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Befestigen einer Stütze eines Streckwerkes gemäß dem Oberbegriff des Anspruches 1.The present invention relates to a device for fastening a support of a drafting system according to the preamble of claim 1.

Streckwerke für Spinnereimaschinen umfassen einen an einer Stütze schwenkbar gelagerten Oberwalzen-Trag- und Belastungsarm, die mittels einer Vorrichtung lösbar an der Haltestange befestigt ist. Üblicherweise sind auf der maschinenlangen Haltestange einer Spinnereimaschine eine Vielzahl von Oberwalzen-Trag- und Belastungsarm von Streckwerken nebeneinander angeordnet.Drafting machines for spinning machines comprise a top roller support and loading arm pivotally mounted to a support and releasably secured to the support bar by means of a device. Usually, a plurality of top roller carrying and loading arms of drafting units are arranged side by side on the machine-length support rod of a spinning machine.

Gemäß einer sehr einfachen Ausführungsform der Vorrichtung zur Befestigung einer Stütze ist vorgesehen, dass eine aus zwei Platten bestehende Stütze mittels einer Befestigungsschraube ortsfest an der Haltestange fixiert wird, indem die Haltestange eine Bohrung für die Anordnung einer Stütze aufweist, in die die Befestigungsschraube eingreift, wie aus der DE-AS 1 133 289 bekannt ist. Hierbei ist es nachteilig, dass durch die Aufbringung des Drehmomentes zum Anziehen der Befestigungsschraube die Bohrung in der Haltestange beschädigt werden kann. Das während des Betriebes am Streckwerk auftretende Drehmoment wird zudem zu einem großen Teil von der in die Bohrung hineinragenden Befestigungsschraube aufgenommen, was dazu führt dass die Befestigungsschraube in der Bohrung arbeitet, was zu weiteren Beschädigungen an der Haltestange führt.According to a very simple embodiment of the device for fixing a support is provided that a two-plate support is fixed by means of a fixing screw fixed to the support rod by the support rod has a bore for the arrangement of a support into which the fastening screw engages, such as from the DE-AS 1 133 289 is known. In this case, it is disadvantageous that the bore in the holding rod can be damaged by the application of the torque for tightening the fastening screw. The torque occurring during operation at the drafting device is also largely absorbed by the fastening screw projecting into the bore, with the result that the fastening screw operates in the bore, which leads to further damage to the retaining rod.

Die DE 26 49 207 A1 beschreibt ebenfalls eine Vorrichtung zur Befestigung einer Stütze, bei der die auf die Haltestange aufgebrachte Stütze des Oberwalzen-Trag- und Belastungsarmes mittels eines als Blattfeder ausgebildeten Hebelarmes befestigt wird. Der Hebelarm ist um eine achsparallel zur Haltestange angeordnete Schwenkachse schwenkbar angeordnet und wird mittels einer auf den Hebelarm einwirkenden Einstellschraube positioniert, um die eingestellte Neigung der Stütze gegenüber der Haltestange zu fixieren. Als nachteilig erweist sich hierbei, dass der Hebelarm zur Anordnung der Stütze auf der Haltestange von einer Bedienperson in einer Position gehalten werden muss, in der der Hebelarm nicht mit einer der auf der Haltestange angeordneten Ausnehmungen in Eingriff treten kann. Des Weiteren tritt während des Betriebes ein Drehmoment am Streckwerk auf, welches eine entgegen der von der Einstellschraube ausgeübten Kraft wirkende Gegenkraft hervorruft, durch welche die im unbelasteten Zustand des Streckwerkes eingestellte Neigung der Stütze veränderlich ist.The DE 26 49 207 A1 also describes a device for fixing a support, in which the support of the support rod applied to the top roller support and loading arm is fixed by means of a leaf spring designed as a lever arm. The lever arm is pivotally mounted about an axis parallel to the support rod arranged pivot axis and is positioned by means of an acting on the lever arm adjusting screw to fix the set inclination of the support relative to the support rod. A disadvantage here proves that the lever arm for the arrangement of the support on the support rod by an operator must be kept in a position in which the lever arm can not engage with one of the holding rod arranged recesses. Furthermore occurs during operation, a torque on the drafting system, which causes a counter to the force exerted by the adjusting force counterforce, by which the set in the unloaded state of the drafting system inclination of the support is variable.

Aufgabe der vorliegenden Erfindung ist es, eine Vorrichtung zur Befestigung einer Stütze an einer Haltestange bereitzustellen, durch die die genannten Nachteile des Standes der Technik vermieden werden können.The object of the present invention is to provide a device for fastening a support to a support rod, by means of which the aforementioned disadvantages of the prior art can be avoided.

Dies wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst.This is achieved by the features of claim 1.

Weitere vorteilhafte Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.Further advantageous embodiments of the invention are the subject of the dependent claims.

Gemäß Anspruch 1 wird vorgeschlagen, dass die Vorrichtung einen um eine achsparallel zur Haltestange angeordnete Schwenkachse schwenkbaren, zweiarmigen Hebel aufweist, wobei der Hebel einen ersten Hebelarm umfasst, welcher zur Befestigung der Stütze des Oberwalzen-Trag- und Belastungsarmes mit einer in der Haltestange vorgesehenen Ausnehmung in Eingriff bringbar ist, sowie einen zweiten Hebelarm aufweist, an dem ein Mittel zur Positionierung des Hebels in einer Transport- und Montageposition oder einer Befestigungsposition angreift. Die Vorrichtung ermöglicht in einfacher Weise das Anordnen der Stütze auf der Haltestange, indem der Hebel der erfindungsgemäßen Vorrichtung in eine Transport- und Montageposition überführbar und in dieser positionierbar ist. Ein versehentliches Eingreifen des ersten Hebelarmes in eine der Ausnehmungen auf der Haltestange wird vermieden.According to claim 1, it is proposed that the device has a two-axis lever pivotable about an axis parallel to the support rod pivot axis, wherein the lever comprises a first lever arm, which for fixing the support of the Upper roller carrying and loading arm can be brought into engagement with a recess provided in the holding rod and a second lever arm, on which acts a means for positioning the lever in a transport and mounting position or a mounting position. The device makes it easy to arrange the support on the support rod by the lever of the device according to the invention in a transport and mounting position can be transferred and positioned in this. Accidental intervention of the first lever arm in one of the recesses on the support rod is avoided.

Vorzugsweise kann der in die Ausnehmung eingreifende erste Hebelarm eine konvex gekrümmte Außenkontur der Stirnfläche aufweisen, wobei der Krümmungsradius der Stirnfläche dem Abstand der Außenkontur von dem Mittelpunkt der Schwenkachse des Hebels entspricht. Dadurch, dass der Radius der Krümmung der Stirnfläche zugleich der axialen Ausdehnung des ersten Hebelarmes zwischen dem Rand der Stirnfläche und dem Mittelpunkt der Schwenkachse entspricht, ist die aus dem während des Betriebes am Streckwerk auftretenden Drehmoment resultierende Kraft unmittelbar auf die Schwenkachse gerichtet. Hierdurch können, anders als beim Stand der Technik, Beschädigungen an den montagerelevanten Flächen, insbesondere an der Haltestange vermieden werden.Preferably, the first lever arm engaging in the recess may have a convexly curved outer contour of the end face, wherein the radius of curvature of the end face corresponds to the distance of the outer contour from the center of the pivot axis of the lever. The fact that the radius of curvature of the end face at the same time corresponds to the axial extent of the first lever arm between the edge of the end face and the center of the pivot axis, resulting from the torque occurring during operation of the drafting is directly directed to the pivot axis. As a result, unlike the prior art, damage to the mounting-relevant surfaces, in particular on the support rod can be avoided.

Vorzugsweise kann der Hebel im Wesentlichen L-förmig ausgebildet sein.Preferably, the lever may be formed substantially L-shaped.

Hierzu können der erste Hebelarm und der zweite Hebelarm so ausgebildet sein, dass sie zwischen ihren Längsachsen einen Winkel α zwischen 80° und 120° einschließen. Insbesondere kann das Mittel zur Positionierung des Hebels eine Schraube sein. Die im Wesentlichen L-förmige Ausgestaltung des Hebels ermöglicht die Positionierung des Hebels durch das Verschwenken um die Schwenkachse zu Transport- und Montagezwecken derart, dass der zweite Hebelarm des Hebels auf der angezogenen Schraube aufliegt und in der Transport- und Montageposition gehalten wird, während sich der erste Hebelarm außer Eingriff mit der Ausnehmung an der Haltestange befindet. Die Stütze des Oberwalzen-Trag- und Belastungsarmes ist in dieser Position des Hebels zur Montage auf der Haltestange aufbringbar und in axialer und radialer Richtung frei verschiebbar.For this purpose, the first lever arm and the second lever arm can be designed so that they form an angle α between 80 ° and 120 ° between their longitudinal axes. In particular, the means for positioning the lever may be a screw. The substantially L-shaped configuration of Levers allows the positioning of the lever by the pivoting about the pivot axis for transport and assembly purposes such that the second lever arm of the lever rests on the tightened screw and is held in the transport and mounting position, while the first lever arm out of engagement with the recess located on the handrail. The support of the upper roller support and loading arm can be applied in this position of the lever for mounting on the support rod and freely displaceable in the axial and radial directions.

Hingegen steht in der Befestigungsposition der erste Hebelarm mit der Ausnehmung an der Haltestange in Eingriff, nachdem durch das Herausdrehen der Schraube der Hebel in Richtung auf die Haltestange verschwenkt wurde. Nach dem Verschwenken wird die Schraube wieder angezogen, so dass sie auf der dem ersten Hebelarm abgewandten Seite des zweiten Hebelarmes angereift und den Hebel in dieser Position fixiert. Hierzu ist das erforderliche Anzugsmoment der Schraube sehr gering, da durch die erfindungsgemäße konstruktive Ausgestaltung des Hebels lediglich die Kräfte von der Schraube aufgenommen werden müssen, die beim Schließen zum Überwinden der Rastposition des Oberwalzen-Trag- und Belastungsarmes auftreten. Die durch das Drehmoment im Betrieb des Streckwerkes hervorgerufenen Kräfte wirken direkt auf die Schwenkachse nicht aber auf die Schraube ein. Hierdurch können Beschädigungen an den montagerelevanten Bauteilen vermieden werden.On the other hand, in the attachment position, the first lever arm engages the recess on the support rod after the lever has been pivoted in the direction of the support rod by unscrewing the screw. After pivoting, the screw is tightened again, so that it matures on the side facing away from the first lever arm side of the second lever arm and fixes the lever in this position. For this purpose, the required tightening torque of the screw is very low, since only the forces of the screw must be absorbed by the inventive structural design of the lever, which occur when closing to overcome the locking position of the upper roller support and loading arm. The caused by the torque during operation of the drafting forces act directly on the pivot axis but not on the screw. As a result, damage to the assembly-related components can be avoided.

Die Erfindung ist nachfolgend anhand eines in den Zeichnungen darstellten Ausführungsbeispieles näher erläutert.
Es zeigen:

Fig. 1
eine Seitenansicht mit Teilschnitt eines Oberwalzen-Trag- und Belastungsarmes in Transport- und Montageposition;
Fig. 2
eine Detailansicht I des Teilschnitts gemäß Fig. 1;
Fig. 3
eine Seitenansicht mit Teilschnitt eines Oberwalzen-Trag- und Belastungsarmes in Befestigungsposition;
Fig. 4
eine Detailansicht III des Teilschnitts gemäß Fig. 3.
The invention is explained in more detail with reference to an exemplary embodiment shown in the drawings.
Show it:
Fig. 1
a side view with partial section of a top roller carrying and loading arm in transport and mounting position;
Fig. 2
a detailed view I of the partial section according to Fig. 1 ;
Fig. 3
a side view with a partial section of a top roller support and loading arm in mounting position;
Fig. 4
a detailed view III of the partial section according to Fig. 3 ,

Die Darstellung in Fig. 1 zeigt eine teilweise aufgeschnittene Seitenansicht einer Stütze 2 eines Oberwalzen-Trag- und Belastungsarmes 1 eines Streckwerkes für Spinnereimaschinen. Der Oberwalzen-Trag- und Belastungsarm 1 ist schwenkbar in der Stütze 2 gelagert und über einen Bedienungshebel 10 betätigbar. Die Stütze 2 ist mittels einer Vorrichtung an einer ortsfesten Haltestange 3 der Spinnereimaschine drehfest gehalten. Der Oberwalzen-Trag- und Belastungsarm 1 weist Lenker 4, 5, 6 für jeweils eine als Ausgangswalze 7, als Mittelwalze 8 und als Eingangswalze 9 angeordnete Oberwalze auf. Die Oberwalzen des Streckwerkes sind vorzugsweise als Zwillingswalzen ausgebildet und werden mit ihren Achsen in den Aufnahmen der Lenker 4, 5, 6 gelagert. Die Befestigung der Stütze 2 des Oberwalzen-Trag- und Belastungsarmes 1 an der Haltestange 3 erfolgt mittels einer in der Stütze 2 angeordneten Vorrichtung, die einen zweiarmigen Hebel 12 umfasst, der um eine achsparallel zur Haltestange 3 angeordnete Schwenkachse 14 in eine Transport- und Montageposition, wie in Fig. 1 dargestellt, beziehungsweise in eine Befestigungsposition, wie in Fig. 3 dargestellt, überführbar ist.The representation in Fig. 1 shows a partially cutaway side view of a support 2 of a top roller support and loading arm 1 of a drafting system for spinning machines. The upper roller carrying and loading arm 1 is pivotally mounted in the support 2 and actuated via an operating lever 10. The support 2 is rotatably held by means of a device on a stationary support rod 3 of the spinning machine. The top roller supporting and loading arm 1 has links 4, 5, 6 for a respective upper roller arranged as a delivery roller 7, as a center roller 8 and as an input roller 9. The upper rollers of the drafting system are preferably designed as twin rollers and are mounted with their axes in the receptacles of the links 4, 5, 6. The attachment of the support 2 of the upper roller support and loading arm 1 on the support rod 3 by means of a support arranged in the device 2, which comprises a two-armed lever 12, which is arranged about an axially parallel to the support rod 3 pivot axis 14 in a transport and mounting position , as in Fig. 1 represented, or in a fastening position, as in Fig. 3 represented, is convertible.

Zur Überführung des zweiarmigen Hebels 12 von der Transport- und Montageposition in die Befestigungsposition und umgekehrt sowie zum Halten in einer der beiden Positionen ist eine an der Stütze 2 angeordnete Stellschraube 13 vorgesehen, die von Außen zugänglich ist.For the transfer of the two-armed lever 12 from the transport and mounting position to the mounting position and vice versa, as well as for holding in one of the two positions is an on the Support 2 arranged adjusting screw 13 is provided, which is accessible from outside.

Fig. 2 stellt eine gegenüber der Darstellung in Fig. 1 vergrößerte Detailansicht I des Teilschnittes gemäß Fig. 1 dar, in welcher die erfindungsgemäße Vorrichtung in der Stütze 2 deutlicher erkennbar ist. Achsparallel zu der Haltestange 3 ist die Schwenkachse 14 innerhalb der Stütze 2 angeordnet. Um die Schwenkachse 14 schwenkbar ist der Hebel 12 angeordnet, der von der Stellschraube 13 in seiner Transport- und Montageposition gehalten wird. Der Hebel 12 ist im Wesentlichen L-förmig ausgebildet und weist einen ersten Hebelarm 15 mit einer konvex gekrümmten Außenkontur der Stirnfläche auf, die mit einer Ausnehmung 11 an der Haltestange 3 in Eingriff bringbar ist, sowie einen zweiten Hebelarm 16, an dem die Stellschraube 13 angreift. Der erste Hebelarm 15 und der zweite Hebelarm 16 erstrecken sich ausgehend vom Mittelpunkt der Schwenkachse 14, wobei die Längsachsen des ersten Hebelarmes 15 und des zweiten Hebelarmes 16 einen Winkel α zwischen 80° und 120° einschließen. Fig. 2 represents one opposite the representation in Fig. 1 enlarged detail I of the partial section according to Fig. 1 in which the device according to the invention in the support 2 is clearly visible. Axially parallel to the support rod 3, the pivot axis 14 is disposed within the support 2. About the pivot axis 14 pivotally, the lever 12 is arranged, which is held by the screw 13 in its transport and mounting position. The lever 12 is substantially L-shaped and has a first lever arm 15 with a convexly curved outer contour of the end face, which can be brought into engagement with a recess 11 on the support rod 3, and a second lever arm 16 on which the adjusting screw 13 attacks. The first lever arm 15 and the second lever arm 16 extend from the center of the pivot axis 14, wherein the longitudinal axes of the first lever arm 15 and the second lever arm 16 form an angle α between 80 ° and 120 °.

In der Transport- und Montageposition des Oberwalzen-Trag- und Belastungsarmes 1 ist die Stirnfläche des ersten Hebelarmes 15 der Haltestange 3 abgewandt positioniert, indem sie von der Ausnehmung 11 in Richtung der Stellschraube 13 weggeschwenkt wird. Um den Hebel 12 in der Transport- und Montageposition zu halten, wird die Stellschraube 13 angezogen, so dass sie in die Stütze 2 hineinragt. Dabei liegt der zweite Hebelarm 16, der in dieser Position im Wesentlichen senkrecht zur Haltestange 3 ausgerichtet ist, auf der Stellschraube 13 auf.In the transport and assembly position of the upper roller support and loading arm 1, the end face of the first lever arm 15 of the support rod 3 is positioned facing away by being pivoted away from the recess 11 in the direction of the adjusting screw 13. To hold the lever 12 in the transport and mounting position, the adjusting screw 13 is tightened so that it protrudes into the support 2. In this case, the second lever arm 16, which is aligned in this position substantially perpendicular to the support rod 3, on the screw 13.

Zur ortsfesten Fixierung der Stütze 2 des Oberwalzen-Trag- und Belastungsarmes 1 an der Haltestange 3 ist die Haltestange 3 mit einer im Wesentlichen keilförmigen Ausnehmung 11 versehen. Nach dem Aufschieben des Oberwalzen-Trag- und Belastungsarmes 1 auf die Haltestange 3 wird die Stellschraube 13 herausgedreht, so dass der Hebel 12 in seine Befestigungsposition verschwenkt werden kann, wie in den Fig. 3 und 4 dargstellt.For stationary fixation of the support 2 of the upper roller support and loading arm 1 on the support rod 3, the support rod 3 is provided with a substantially wedge-shaped recess 11. After pushing on the upper roller support and loading arm 1 the support rod 3, the screw 13 is rotated so that the lever 12 can be pivoted to its mounting position, as in the 3 and 4 dargstellt.

Die Darstellung in Fig. 3 zeigt den Oberwalzen-Trag- und Belastungsarm 1, der mittels der erfindungsgemäßen Vorrichtung an der Haltestange 3 festgelegt ist. Während des Betriebes des Streckwerkes wirkt auf die Stütze 2 ein Drehmoment M, dessen Wirkrichtung durch den Pfeil angedeutet ist.The representation in Fig. 3 shows the upper roller carrying and loading arm 1, which is fixed by means of the device according to the invention on the support rod 3. During operation of the drafting device acts on the support 2, a torque M, the effective direction is indicated by the arrow.

Die Detailansicht III in Fig. 4 stellt den Hebel 12 der Vorrichtung in einem gegenüber der Fig. 3 stark vergrößerten Maßstab in seiner Befestigungsposition dar. In der Befestigungsposition des Hebels 12 liegt der erste Hebelarm 15 mit seiner gekrümmten Außenkontur der Stirnfläche, die einen Radius R aufweist, in der keilförmigen Ausnehmung 11 der Haltestange 3 an, während die Stellschraube 13 am zweiten Hebelarm 16 anliegt und den Hebel 12 in dieser Position hält. Der Radius R der Krümmung der Außenkontur der Stirnfläche des ersten Hebelarmes 15 entspricht dem Abstand ausgehend vom Rand der Stirnfläche des ersten Hebelarmes 15 bis zum Mittelpunkt M der Schwenkachse 14.The detailed view III in Fig. 4 represents the lever 12 of the device in a relation to the Fig. 3 In the mounting position of the lever 12 is the first lever arm 15 with its curved outer contour of the end face having a radius R, in the wedge-shaped recess 11 of the support rod 3, while the adjusting screw 13 on the second lever arm sixteenth abuts and holds the lever 12 in this position. The radius R of the curvature of the outer contour of the end face of the first lever arm 15 corresponds to the distance from the edge of the end face of the first lever arm 15 to the center M of the pivot axis 14.

Da der Mittelpunkt des Krümmungsradius R der Stirnfläche des ersten Hebelarmes 15 mit dem Mittelpunkt der Schwenkachse 14 zusammenfällt, respektive die sich über die axiale Ausdehnung des Hebels 12 erstreckende Linienpressung achsparallel zur Längsachse der Schwenkachse 14 auf Grund der konvexen Krümmung der an der Ausnehmung 11 anliegenden Stirnfläche des ersten Hebelarmes 15 mit stets dem gleichen Abstand R bewirkt wird, ist die aus dem Drehmoment M resultierende Kraft direkt auf die Schwenkachse 14 gerichtet. Es tritt kein Versatz in der Kraftübertragungsebene zwischen Haltestange 3 und Schwenkachse 14 auf, so dass während des Betriebes des Streckwerkes kein zusätzliches Drehmoment auf die Schwenkachse 14 übertragen wird. Durch das Positionieren des Hebels 12 in der Transport- und Montageposition wird das Anordnen der Stütze 2 auf der Haltestange 3 vereinfacht, da der Hebel 12 während des Aufschiebens der Stütze 2 nicht mit den auf der maschinenlangen Haltestange 3 angebrachten Ausnehmungen 11 in Eingriff treten kann.Since the center of the radius of curvature R of the end face of the first lever arm 15 coincides with the center of the pivot axis 14, respectively, extending over the axial extent of the lever 12 line pressure axially parallel to the longitudinal axis of the pivot axis 14 due to the convex curvature of the recess 11 adjacent end face of the first lever arm 15 is always effected with the same distance R, the force resulting from the torque M is directed directly to the pivot axis 14. There is no offset in the power transmission plane between the support rod 3 and pivot axis 14, so that during operation of the drafting system no additional torque is transmitted to the pivot axis 14. By positioning the lever 12 in the transport and mounting position, the positioning of the support 2 on the support rod 3 is simplified since the lever 12 can not engage with the recesses 11 mounted on the machine-length support rod 3 during the sliding of the support 2.

Claims (5)

Vorrichtung zum Befestigen einer Stütze (2) eines Streckwerkes an einer Haltestange (3) einer Spinnereimaschine, wobei an der Stütze (2) ein Oberwalzen-Trag- und Belastungsarm (1) schwenkbar gelagert angeordnet ist,
dadurch gekennzeichnet,
dass die Vorrichtung einen um eine achsparallel zur Haltestange (3) angeordnete Schwenkachse (14) schwenkbaren, zweiarmigen Hebel (12) aufweist, wobei der Hebel (12) einen ersten Hebelarm (15) umfasst, welcher zur Befestigung der Stütze (2) des Oberwalzen-Trag- und Belastungsarmes (1) mit einer in der Haltestange (3) vorgesehenen Ausnehmung (11) in Eingriff bringbar ist, sowie einen zweiten Hebelarm (16) aufweist, an dem ein Mittel (13) zur Positionierung des Hebels (12) in einer Transport- und Montageposition oder einer Befestigungsposition angreift.Device for fastening a support (2) of a drafting device to a support rod (3) of a spinning machine, a top roller support and loading arm (1) being pivotably mounted on the support (2),
characterized,
in that the device has a two-armed lever (12) which is pivotable about an axis parallel to the support rod (3), the lever (12) comprising a first lever arm (15) for securing the support (2) of the top rollers Supporting and loading arm (1) with a provided in the support rod (3) recess (11) is engageable, and a second lever arm (16) on which a means (13) for positioning the lever (12) in a transport and mounting position or a mounting position attacks. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der in die Ausnehmung (11) eingreifende erste Hebelarm (15) eine konvex gekrümmte Außenkontur der Stirnfläche aufweist, deren Krümmungsradius (R) dem Abstand der Außenkontur von dem Mittelpunkt (M) der Schwenkachse (14) des Hebels (12) entspricht.Device according to claim 1, characterized in that the first lever arm (15) engaging in the recess (11) has a convexly curved outer contour of the end face whose radius of curvature (R) corresponds to the distance of the outer contour from the center point (M) of the pivot axis (14). of the lever (12) corresponds. Vorrichtung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass der Hebel (12) im Wesentlichen L-förmig ausgebildet ist.Device according to one of claims 1 or 2, characterized in that the lever (12) is formed substantially L-shaped. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der erste Hebelarm (15) und der zweite Hebelarm (16) so ausgebildet sind, dass sie zwischen ihren Längsachsen einen Winkel (α) zwischen 80° und 120° einschließen.Apparatus according to claim 3, characterized in that the first lever arm (15) and the second lever arm (16) are formed so that they form an angle (α) between 80 ° and 120 ° between their longitudinal axes. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Mittel zur Positionierung des Hebels (12) eine Schraube (13) ist.Device according to one of claims 1 to 4, characterized in that the means for positioning the lever (12) is a screw (13).
EP09000539.8A 2008-01-26 2009-01-16 Device for fixing a support of a drafting unit Active EP2083101B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102008006217A DE102008006217A1 (en) 2008-01-26 2008-01-26 Device for securing a support of a drafting system

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
DE102008006217 Previously-Filed-Application 2008-01-26

Publications (3)

Publication Number Publication Date
EP2083101A2 true EP2083101A2 (en) 2009-07-29
EP2083101A3 EP2083101A3 (en) 2014-04-02
EP2083101B1 EP2083101B1 (en) 2016-01-13

Family

ID=40636974

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EP09000539.8A Active EP2083101B1 (en) 2008-01-26 2009-01-16 Device for fixing a support of a drafting unit

Country Status (8)

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EP (1) EP2083101B1 (en)
JP (1) JP5355107B2 (en)
CN (1) CN101492845B (en)
DE (1) DE102008006217A1 (en)
ES (1) ES2561595T3 (en)
RU (1) RU2493300C2 (en)
TR (1) TR200900545A2 (en)
TW (1) TWI460326B (en)

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Publication number Priority date Publication date Assignee Title
CN105780217B (en) * 2016-04-28 2018-05-15 常州市同和纺织机械制造有限公司 Fine adjustment type cradle structure
DE102018005998A1 (en) * 2018-07-31 2020-02-06 Saurer Spinning Solutions Gmbh & Co. Kg Support frame for a drafting unit and drafting system comprising such a draft unit
DE102019135732B4 (en) * 2019-12-23 2021-09-23 Neura Robotics GmbH Device for measuring a change in length

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DE2649207A1 (en) 1975-10-29 1977-07-21 Ntn Toyo Bearing Co Ltd BEAM FIXING DEVICE, ESPECIALLY FOR STRETCH GEAR ON TEXTILE MACHINERY

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DE1133289B (en) 1961-04-21 1962-07-12 Skf Kugellagerfabriken Gmbh Top roller support and loading arm for spinning machine drafting systems
DE2649207A1 (en) 1975-10-29 1977-07-21 Ntn Toyo Bearing Co Ltd BEAM FIXING DEVICE, ESPECIALLY FOR STRETCH GEAR ON TEXTILE MACHINERY

Also Published As

Publication number Publication date
RU2493300C2 (en) 2013-09-20
JP2009174112A (en) 2009-08-06
TR200900545A2 (en) 2009-08-21
TWI460326B (en) 2014-11-11
CN101492845B (en) 2012-01-11
EP2083101A3 (en) 2014-04-02
EP2083101B1 (en) 2016-01-13
CN101492845A (en) 2009-07-29
DE102008006217A1 (en) 2009-07-30
TW200940764A (en) 2009-10-01
RU2009102145A (en) 2010-07-27
ES2561595T3 (en) 2016-02-29
JP5355107B2 (en) 2013-11-27

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