EP2123813B1 - Heald shaft drive, switching lever assembly and switching lever for such - Google Patents
Heald shaft drive, switching lever assembly and switching lever for such Download PDFInfo
- Publication number
- EP2123813B1 EP2123813B1 EP08156672.1A EP08156672A EP2123813B1 EP 2123813 B1 EP2123813 B1 EP 2123813B1 EP 08156672 A EP08156672 A EP 08156672A EP 2123813 B1 EP2123813 B1 EP 2123813B1
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- European Patent Office
- Prior art keywords
- lever
- heald frame
- reversing lever
- drive arrangement
- heald
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C1/00—Dobbies
- D03C1/14—Features common to dobbies of different types
- D03C1/144—Features common to dobbies of different types linking to the heald frame
Definitions
- the invention relates to a heald shaft drive arrangement for a plurality of heald frames, a reversing lever set for such heald shaft drive arrangement and a reversing lever suitable for said heald shaft drive arrangement.
- Kettfadenlaufraum successively arranged heddle shafts which are alternately moved upwards and / or down to form a shed with the warp threads, in which the weft thread is entered.
- the stroke of a shaft may be directed upwards (upper compartment) or downwards (lower compartment). Ideally, the stroke up and the stroke down from a zero position are equal.
- the zero position corresponds to the shaft position at which the warp threads guided by the respective shaft lie in the warp thread plane. This shaft position is also called shed position.
- linkage To drive the heald frames are linkage, the lever contain.
- Such a linkage is from the CH 549 668 A known, the features of the preamble of claim 1 disclosed.
- the CH 549 668 A In the device according to the CH 549 668 A are used to drive the individual shafts linkage uniformly formed.
- the shed To be able to register the weft thread in the shed, the shed must be sufficiently wide open and be left open for a sufficient time. To meet this condition, the shafts remote from the tissue attachment point are often given larger strokes than the shafts proximal to the connection point. As the strokes increase with increasing removal of the heald from the fabric bond point, such that all warp yarns are fed up or down at nearly uniform angles, a "clean shed" is used. However, the warp threads are stretched and stressed differently. If, on the other hand, the yarn stresses are made uniform, i. If the individual weaving strokes are approximately the same size, the specialist setting is referred to as "scattering broach". This is not optimal with regard to the weft insertion. Therefore, in practice usually a combination of "pure subject" and “scattering" is used. This setting is called a "mix tray".
- the invention solves the above object by a heald shaft drive assembly with differently designed linkage for individual heddle shafts.
- the linkage of the individual heald frames differ, for example, and preferably by differently configured, differently connected or differently adjusted deflection levers.
- the reversing levers are characterized in particular by different angles, which enclose their two lever arms in each case.
- the different design lever can be combined with different lengths connecting rods which connect the bellcrank with shaft levers of the dobby.
- the different lengths connecting rods allow the setting of a desired height position of the respective weaving shank.
- connecting rods with a fixed length and length-adjustable connecting rods can be used.
- the lever can each have a fixed angle between their lever arms.
- the reversing levers together form a Umlenkhebelsatz comprising at least two lever with different angles.
- lever arms are used for the connection point remote heddle shafts, which have a greater angle than the lever of the weaving shafts near the binding point.
- the Winkeleinstellschw can be given by a stepless adjustment or an adjustment that allows only a graded adjustment of the various angles.
- the gradations are made such that they coincide with the angles required at the different weave shaft positions.
- the adjustment of the angle can be done for example by correspondingly positive or frictional clutches, adjusting screws or the like, which adjust a lever arm of the angle lever or a part thereof.
- said connection points are alternatively usable.
- FIG. 1 a shedding machine 1 is illustrated, to which a group of healds 2 belong.
- Each weave 2 is formed by a frame with upper and lower shaft rods and side supports. On the shaft rods in each case a plurality of healds 3 is mounted. These serve to guide warp threads 4, as they are made FIG. 4 emerge.
- the individual warp threads 4 are each provided with the same letter index as the weave shaft 2a to 2f to which they belong.
- the warp threads 4a, 4b, 4c, 4d and 4f are displaced upwardly out of the warp thread plane by a corresponding stroke of the heald frames 2a, 2b, 2c, 2d and 2f. They are in the upper part.
- the weave 2e is shifted downwards. Accordingly, the warp thread 4e is in the lower compartment.
- the warp threads 4 run starting from a warp beam (not shown), from a rear compartment, through a thread eye of the heddles 3 of a heald 2 radiate to a fabric tying point 5 in the front compartment. From this fabric binding point 5, at which the weft stop takes place, the fabric 6 extends away in the direction of the fabric tree (not shown).
- the warp threads close with the warp thread plane a box angle of eg 32 °. Between the warp thread 4e and the other warp threads 4a to d and 4f a shed 7 is clamped for the weft insertion.
- the in FIG. 4 The area denoted by the reference numeral 7 represents the section of a complete shed which is obvious to the goods tree.
- the number of sheds 2 can be smaller or larger than shown.
- the shedding can be done in any combination of heald 2.
- the individual heald 2 are how out FIG. 1 can be seen, moved by means of a heald shaft drive assembly 8.
- a drive machine 9 from whose housing a group of rockers or shaft levers 10 protrudes, one for each weaving shed 2 (2a to 2f).
- Each of these shaft levers 10 is connected via a linkage 11 individually with its respective associated weaving shank 2 (2a to 2f).
- the heald frames 2 are driven via corresponding provided on the lower shaft rod terminals 12, 13, 14. Of these extend lifting rods 15, 16, 17 down to reversing levers 18, 19, 20.
- the lifting rods 15, 16, 17 comprise means (not shown) with which the lengths of the lifting rods 15, 16, 17 can be changed.
- the height positioning of a heald 2 can be done by means of the lifting rods 15, 16, and 17.
- the lever 18, 19, 20 are formed as an angle lever. They are pivotally mounted about horizontal parallel axes of rotation. The pivoting movement is in FIG. 1 indicated by curved arrows and leads to a likewise indicated by an arrow right next to the heald 2 vertical up and down movement of the same. To cause this, the lower ends of the angle levers 18, 19, 20 are articulated by substantially horizontally arranged Unterzugstangen 21, 22 connected with each other. To drive this arrangement, the lever 18 is pivotally connected via a connecting rod 23 with the shaft lever 10.
- the connecting rod 23 may be rigid and of fixed length.
- the individual connecting rods 23, which are assigned to the individual heald frames 2, can have individual lengths, as a result of which the individual linkages leading from the shaft levers 10 to the heald frames 2 are designed differently with one another.
- the linkage 11 in the embodiment according to FIG. 1 includes the terminals 12, 13, 14, the lifting rods 15, 16, 17, the lever 18, 19, 20, the Unterzugstangen 21, 22 and the connecting rod 23.
- Alternatively formed linkage 11 may have other means to pivot lever 10 and Webschaft second to connect with each other.
- the lever 19, 20 of all lever mechanism of the shed drive assembly 8 may have a uniform angle between their lever arms.
- the angle levers 18 (18a, 18b, 18c, 18d) which make the connection between the connecting rods 23 and the lower tie rods 21 are preferably not formed uniformly. This is off FIG. 2 seen.
- the reversing levers 18 form a Umlenkhebelsatz 24, in which the lever arms 25, 26 of each reversing lever 18 with each other different angles ⁇ , ⁇ , ⁇ , etc. include.
- the lever arms 25 of all the lever 18 may have a uniform length.
- the lever arms 26 of all the lever 18 may also have a uniform length.
- the lengths of the lever arms 25, 26 may be chosen differently.
- At least one of the deflection lever 18 has an angle ⁇ which differs from the angle ⁇ of at least one other deflection lever 18. This is in FIG. 3 illustrated schematically.
- the connecting rods 23a, 23b, 23c have different lengths because of the different angular positions of the downward-pointing lever arms 25a, 25b, 25c.
- they are preferably fixed to the shaft levers 10a, b, c at different height positions.
- Each lever 18 has at the ends of its lever arms 25, 26 joints or connection points for the connecting rod 23 and the lifting rod 15.
- the angle which the lever arms 25, 26 enclose with each other, are formed by the connecting lines of the centers of these connection points with the axis of rotation 27 about which the lever 18 are pivotally mounted.
- all the lever 18 are pivotable about a common axis of rotation or pivot axis 27.
- the lever arm 25 has a bearing point for the lower tie rod 21.
- the shed forming machine 1 described so far operates as follows:
- the movement of the heald frames 2a to 2f is predetermined by the heald shaft drive arrangement 8.
- the prime mover 9 moves the individual shaft levers 10 accordingly.
- this movement is transmitted to the heald frames 2a to 12f.
- motion transmission the movement is slightly changed.
- the lifting or lowering movement each weave 2a to 2f is not proportional to the movement of the individual shaft levers 10 due to a non-linear motion transmission law.
- FIG. 4 is a snapshot of the work of the shedding machine 1 illustrated, with only the warp threads 4 of the front compartment are shown on their way from the respective weaving shank 2 to the fabric weave point 5 in the direction of the fabric tree.
- the rear compartment and the course of the warp threads 4 in this is not shown for the sake of simplicity.
- the heddle shafts 2a, 2b, 2c, 2d and f are in the upper compartment.
- the weave 2e is in the lower part.
- the healds 2a, 2b, 2c, 2d have an equal lifting height. They form a "stray brook”.
- the healds 2e and 2f are set to different heights. They form a pure subject. Overall, a mixing compartment is thus formed. This is for illustrative purposes only.
- the subject setting can basically be chosen differently.
- FIG. 3 is the kinematics of the shed-drive assembly 8 based on the first three lever 18a, 18b, 18c shown, whose angles ⁇ , ⁇ , ⁇ are coordinated so that at a given shed angle of, for example, 32 ° at any of the healds a significant difference between the size of the stroke up (top compartment) and the down stroke (bottom compartment).
- For slightly larger or smaller shed angles (these are the angles that the respective warp thread includes with the warp thread plane), there are only minor, completely negligible deviations between the shed height of the shed and the shed of about + 0.5 mm or - 0.5 mm , This is shown by the curves IV and VI of FIG. 12 , It is particularly significant that this small difference does not increase significantly with increasing distance of a weave 2 of the tissue binding point 5.
- the invention can, as FIG. 2 indicates, be realized by a Umlenkhebelsatz 24, which consists of differently designed reversing levers 18a, 18b, 18c, etc.
- a Umlenkhebelsatz 24 which consists of differently designed reversing levers 18a, 18b, 18c, etc.
- adjustable lever 18 of various types.
- FIGS. 5 and 6 shows an adjustable lever 18, the lever arms 25, 26 are adjustable against each other.
- a toothed coupling 28 is provided between the two. This allows a stepwise adjustment of the lever arms 25, 26 to change the angle between the two.
- a stepwise adjustment is also according to a basically rigid lever 18 FIG. 8 possible. This allows an adjustment of the angle between the two lever arms 25, 26 by 26 different articulation points 39a, 39b, 39c for the connecting rod 23a, 23b, 23c, are available on one of the lever arms 25, available.
- Such alternative pivot points may also be provided on the lever arm 26, which is in FIG. 8 not shown.
- the articulation points 39a, 39b, 39c, etc. are preferably arranged so that the desired angles ⁇ , ⁇ , ⁇ are predetermined.
- the two lever arms 25, 26 are here provided with adjusting means, for example an angle adjusting device in the form of an adjusting screw 30, which adjusts the angle set between the lever arms 25, 26 by rotation.
- adjusting means for example an angle adjusting device in the form of an adjusting screw 30, which adjusts the angle set between the lever arms 25, 26 by rotation.
- a shedding machine 1 utilizes in its shed-drive arrangement 8 deflecting levers 18a, 18b, 18c, which convert the reciprocating drive movement of connecting rods 23a, 23b, 23c into up and down movements of lifting rods 15 on the one hand, and on the other hand via lower tie rods 21 Drive the lever 19, 20.
- the deflection levers 18a, 18b, 18c have different angles ⁇ , ⁇ , ⁇ between their lever arms 25a, 25b, 25c and 26a, 26b, 26c.
- the connecting rods 23a, 23b, 23c have correspondingly different lengths. These are dimensioned so that all heald frames 2a, 2b, 2c are in shed-closure position when the shank levers 10a, b, c are in the neutral position.
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Description
Die Erfindung betrifft eine Webschaft-Antriebsanordnung für mehrere Webschäfte, einen Umlenkhebelsatz für eine solche Webschaft-Antriebsanordnung und einen für die genannte Webschaft-Antriebsanordnung geeigneten Umlenkhebel.The invention relates to a heald shaft drive arrangement for a plurality of heald frames, a reversing lever set for such heald shaft drive arrangement and a reversing lever suitable for said heald shaft drive arrangement.
Webmaschinen weisen mehrere bezüglich der Kettfadenlaufrichtung hintereinander angeordnete Webschäfte auf, die abwechselnd nach oben und/oder nach unten bewegt werden, um mit den Kettfäden ein Webfach zu bilden, in das der Schussfaden eingetragen wird. Der Hub eines Schafts kann nach oben (Oberfach) oder nach unten (Unterfach) gerichtet sein. Im Idealfall sind der Hub nach oben und der Hub nach unten ausgehend von einer Nulllage gleich groß. Die Nulllage entspricht der Schaftposition, bei der die von dem betreffenden Schaft geführten Kettfäden in der Kettfadenebene liegen. Diese Schaftposition heißt auch Fachschlussposition.Weaving machines have several respect to the Kettfadenlaufrichtung successively arranged heddle shafts, which are alternately moved upwards and / or down to form a shed with the warp threads, in which the weft thread is entered. The stroke of a shaft may be directed upwards (upper compartment) or downwards (lower compartment). Ideally, the stroke up and the stroke down from a zero position are equal. The zero position corresponds to the shaft position at which the warp threads guided by the respective shaft lie in the warp thread plane. This shaft position is also called shed position.
Zum Antrieb der Webschäfte dienen Gestänge, die Umlenkhebel enthalten. Ein solches Gestänge ist aus der
Um den Schussfaden in das Webfach eintragen zu können, muss das Fach ausreichend weit geöffnet sein und ausreichend lange offen stehen. Um diese Bedingung zu erfüllen, werden den von dem Gewebebindungspunkt fern liegenden Schäften häufig größere Hübe erteilt als den dem Verbindungspunkt nahe liegenden Schäften. Wenn die Hübe mit zunehmender Entfernung der Webschäfte von dem Gewebebindungspunkt derart zunehmen, dass alle Kettfäden in nahezu einheitlichen Winkeln nach oben oder nach unten geführt werden, wird von einem "reinen Fach" gesprochen. Hierbei werden die Kettfäden jedoch unterschiedlich stark gedehnt und beansprucht. Werden hingegen die Fadenbeanspruchungen vergleichmäßigt, d.h. sind die einzelnen Webschafthübe näherungsweise gleich groß, wird die Facheinstellung als "Streufach" bezeichnet. Diese ist hinsichtlich des Schussfadeneintrags nicht optimal. Deshalb wird in der Praxis meist eine Kombination von "reinem Fach" und "Streufach" genutzt. Diese Einstellung wird als "Mischfach" bezeichnet.To be able to register the weft thread in the shed, the shed must be sufficiently wide open and be left open for a sufficient time. To meet this condition, the shafts remote from the tissue attachment point are often given larger strokes than the shafts proximal to the connection point. As the strokes increase with increasing removal of the heald from the fabric bond point, such that all warp yarns are fed up or down at nearly uniform angles, a "clean shed" is used. However, the warp threads are stretched and stressed differently. If, on the other hand, the yarn stresses are made uniform, i. If the individual weaving strokes are approximately the same size, the specialist setting is referred to as "scattering broach". This is not optimal with regard to the weft insertion. Therefore, in practice usually a combination of "pure subject" and "scattering" is used. This setting is called a "mix tray".
Daraus ist ersichtlich, dass in der Praxis sowohl beim Streufach als auch beim Mischfach mit unterschiedlichen Schafthüben an den einzelnen Webschäften gearbeitet wird. Während einige der Webschäfte das oben genannten Ideal verwirklichen, wonach der Oberfachhub und der Unterfachhub gleich groß sind, führen die Hebelumlenkungen des Gestänges bei einigen anderen Webschäften zu einer erheblichen Differenz zwischen Oberfachhub und Unterfachhub. Diese Unterschiede werden auch als "Verzerrung" bezeichnet. Diese Verzerrung führt zu einer Abnahme der Größe des Unterfachs. Um genügend Platz für den Schusseintrag zu gewährleisten, muss der Hub insgesamt vergrößert werden. Dies stellt eine unnötige Belastung für die Kettfäden und die Fachbildemaschine sowie eine Belastung der Lager und Umlenkstellen dar.It can be seen that in practice both the stray and the mixing compartment with different shank strokes on the individual healds is worked. While some of the heald frames realize the above-mentioned ideal whereby the upper shed lift and the lower shifter stroke are equal, the lever deflections of the linkage in some other heald frames result in a significant difference between upper shed and lower shifts. These differences are also referred to as "distortion". This distortion leads to a decrease in the size of the sub-compartment. In order to ensure sufficient space for the weft insertion, the stroke must be increased overall. This represents an unnecessary burden on the warp threads and the shedding machine and a load on the bearings and deflection points.
Davon ausgehend, ist es Aufgabe der Erfindung eine entsprechend verbesserte Fachbildemaschine zu schaffen.On this basis, it is an object of the invention to provide a correspondingly improved shedding machine.
Diese Aufgabe wird mit der Webschaft-Antriebsanordnung nach Anspruch 1, z.B. durch Nutzung eines Umlenkhebelsatzes nach Anspruch 8, und/oder durch Verwendung von Umlenkhebeln nach Anspruch 11 gelöst:This object is achieved with the heald shaft drive arrangement according to claim 1, e.g. by using a Umlenkhebelsatzes according to
Die Erfindung löst die genannte Aufgabe durch eine Webschaft-Antriebsanordnung mit unterschiedlich ausgebildeten Gestängen für einzelne Webschäfte. Die Gestänge der einzelnen Webschäfte unterscheiden sich beispiels- und vorzugsweise durch unterschiedlich ausgebildete, unterschiedlich angeschlossene oder unterschiedlich eingestellte Umlenkhebel. Die Umlenkhebel zeichnen sich insbesondere durch unterschiedliche Winkel aus, die ihre beiden Hebelarme jeweils miteinander einschließen. Durch die Verwendung unterschiedlicher Umlenkhebel kann erreicht werden, dass für einen gegebenen Fachwinkel an allen beteiligten Webschäften, trotz Streufacheinstellung oder Mischfacheinstellung, die vorhandenen Verzerrungen reduziert und insbesondere vereinheitlicht werden. Damit werden auch die Belastungen an den Umlenkhebeln, Lagerstellen und Kettfäden vereinheitlicht.The invention solves the above object by a heald shaft drive assembly with differently designed linkage for individual heddle shafts. The linkage of the individual heald frames differ, for example, and preferably by differently configured, differently connected or differently adjusted deflection levers. The reversing levers are characterized in particular by different angles, which enclose their two lever arms in each case. By using different reversing lever can be achieved that for a given shed angle on all involved Webschäften, despite stray adjustment or Mischfacheinstellung, the existing distortions are reduced and in particular unified. This also unifies the loads on the reversing levers, bearings and warp threads.
Die unterschiedlich ausgebildeten Umlenkhebel können mit unterschiedlich lang ausgebildeten Verbindungsstangen kombiniert werden, die die Umlenkhebel mit Schafthebeln der Schaftmaschine verbinden. Die unterschiedlich langen Verbindungsstangen gestatten die Einstellung einer gewünschten Höhenposition des jeweiligen Webschafts. Neben Verbindungsstangen mit fester Länge können auch längenverstellbare Verbindungsstangen zum Einsatz kommen.The different design lever can be combined with different lengths connecting rods which connect the bellcrank with shaft levers of the dobby. The different lengths connecting rods allow the setting of a desired height position of the respective weaving shank. In addition to connecting rods with a fixed length and length-adjustable connecting rods can be used.
Die Umlenkhebel können jeweils einen fest eingestellten Winkel zwischen ihren Hebelarmen haben. Die Umlenkhebel bilden zusammen einen Umlenkhebelsatz, der zumindest zwei Umlenkhebel mit unterschiedlichen Winkeln umfasst. Vorzugsweise werden für die bindungspunktfernen Webschäfte Umlenkhebel genutzt, die einen größeren Winkel aufweisen als die Umlenkhebel der bindungspunktnahen Webschäfte.The lever can each have a fixed angle between their lever arms. The reversing levers together form a Umlenkhebelsatz comprising at least two lever with different angles. Preferably, lever arms are used for the connection point remote heddle shafts, which have a greater angle than the lever of the weaving shafts near the binding point.
Es können alternativ auch einheitliche Umlenkhebel verwendet werden, die eine Winkeleinstellmöglichkeit aufweisen. Die Winkeleinstellmöglichkeit kann durch eine stufenlose Einstellvorrichtung oder eine Einstellvorrichtung gegeben sein, die nur eine abgestufte Einstellung der verschiedenen Winkel gestattet. Vorzugsweise sind die Abstufungen dabei so getroffen, dass sie mit den an den verschiedenen Webschaftpositionen erforderlichen Winkeln übereinstimmen. Die Einstellung des Winkels kann beispielsweise durch entsprechend form- oder reibschlüssige Kupplungen, Einstellschrauben oder dergleichen geschehen, die einen Hebelarm des Winkelhebels oder einen Teil desselben verstellen. Eben so gut ist es möglich, an einem der Hebelarme verschiedene Anlenkpunkte für eine wegführende Verbindungsstange oder eine wegführende Hubstange vorzusehen, wobei diese Verbindungspunkte alternativ nutzbar sind.It can also be used as an alternative uniform lever, which have a Winkeleinstellmöglichkeit. The Winkeleinstellmöglichkeit can be given by a stepless adjustment or an adjustment that allows only a graded adjustment of the various angles. Preferably, the gradations are made such that they coincide with the angles required at the different weave shaft positions. The adjustment of the angle can be done for example by correspondingly positive or frictional clutches, adjusting screws or the like, which adjust a lever arm of the angle lever or a part thereof. Just as well it is possible to provide on one of the lever arms different articulation points for a wegführender connecting rod or a wegführende lifting rod, said connection points are alternatively usable.
Weitere Einzelheiten vorteilhafter Ausführungsformen der Erfindung sind Gegenstand der Zeichnung, der Ansprüche oder der Beschreibung. Die Beschreibung beschränkt sich auf wesentliche Aspekte der Erfindung und sonstiger Gegebenheiten. Die Zeichnung ist ergänzend heranzuziehen. Sie offenbart weitere Details. Es zeigen:
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Fig. 1 Eine Fachbildemaschine, einschließlich einer Webschaft-Antriebsanordnung, in schematischer Frontalansicht. -
Fig. 2 Einen Ausschnitt aus einem Umlenkhebelsatz der Webschaft-Antriebsanordnung nachFigur 1 . -
Fig. 3 Eine Kinematik mehrerer Umlenkhebel des Umlenkhebelsatzes der Webschaft-Antriebsanordnung nachFigur 1 . -
Fig. 4 Die Fachbildemaschine nachFigur 1 , in einer schematisierten Seitenansicht. -
Fig. 5 bis 11 verschiedene Varianten von Verstellbaren Umlenkhebeln in schematisierten Seitenansichten und -
Fig. 12 die Darstellung von Fachbildedifferenzen an verschiedenen Webschäften bei der erfindungsgemäßen Maschine im Vergleich zu konventionellen Maschinen.
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Fig. 1 A shedding machine, including a heald shaft drive assembly, in a schematic frontal view. -
Fig. 2 A section of a Umlenkhebelsatz the heald shaft assembly afterFIG. 1 , -
Fig. 3 A kinematics of several reversing lever of Umlenkhebelsatzes Webschaft drive assembly according toFIG. 1 , -
Fig. 4 The shedding machine afterFIG. 1 , in a schematic side view. -
Fig. 5 to 11 different variants of adjustable levers in schematic side views and -
Fig. 12 the representation of differences in sheds on different heald frames in the machine according to the invention in comparison to conventional machines.
In der nachfolgenden Figurenbeschreibung sind Ausführungsbeispiele der Erfindung beschrieben. Eine Bezugnahme auf Elemente der Figurenbeschreibung und der Ansprüche ohne Buchstabenindex und im Singular oder Plural gilt jeweils als allgemeine Bezugnahme für alle Elemente mit entsprechendem Bezugszeichen unabhängig davon, ob diese einen Buchstabenindex tragen oder nicht. Eine Bezugnahme auf einzelne Elemente unter Zuhilfenahme eines Buchstabenindex gilt spezifisch für das so bezeichnete Element.In the following description of the figures embodiments of the invention are described. A reference to elements of the description of the figures and the claims without a letter index and in the singular or plural is in each case regarded as a general reference for all elements with a corresponding reference symbol irrespective of whether they bear a letter index or not. Reference to individual elements using a letter index is specific to the element so designated.
In
Die einzelnen Webschäfte 2 werden, wie aus
Die Umlenkhebel 19, 20 aller Hebelgetriebe der Webfach-Antriebsanordnung 8 können einheitliche Winkel zwischen ihren Hebelarmen aufweisen. Jedoch sind die Winkelhebel 18 (18a, 18b, 18c, 18d), die die Verbindung zwischen den Verbindungsstangen 23 und den Unterzugstangen 21 herstellen, vorzugsweise nicht einheitlich ausgebildet. Dies ist aus
Die Umlenkhebel 18 bilden einen Umlenkhebelsatz 24, bei dem die Hebelarme 25, 26 jedes Umlenkhebels 18 miteinander unterschiedliche Winkel α, β, γ usw. einschließen. Die Hebelarme 25 aller Umlenkhebel 18 können eine einheitliche Länge aufweisen. Die Hebelarme 26 aller Umlenkhebel 18 können ebenfalls eine einheitliche Länge aufweisen. Die Längen der Hebelarme 25, 26 können unterschiedlich gewählt sein.The reversing levers 18 form a
Zumindest einer der Umlenkhebel 18 weist einen Winkel α auf, der sich von dem Winkel β zumindest eines anderen Umlenkhebels 18 unterscheidet. Dies ist in
Jeder Umlenkhebel 18 weist an den Enden seiner Hebelarme 25, 26 Gelenke oder Anschlussstellen für die Verbindungsstange 23und die Hubstange 15 auf. Die Winkel, den die Hebelarme 25, 26 miteinander einschließen, werden durch die Verbindungslinien der Mittelpunkte dieser Anschlussstellen mit der Drehachse 27 gebildet, um die die Umlenkhebel 18 schwenkbar gelagert sind. Vorzugsweise sind alle Umlenkhebel 18 um eine gemeinsame Drehachse bzw. Schwenkachse 27 schwenkbar. Zusätzlich zu der Anschlussstelle für eine Verbindungsstange 23 weist der Hebelarm 25 eine Lagerstelle für die Unterzugstange 21 auf.Each
Die insoweit beschriebene Fachbildemaschine 1 arbeitet wie folgt:The shed forming machine 1 described so far operates as follows:
Die Bewegung der Webschäfte 2a bis 2f ist durch die Webschaft-Antriebsanordnung 8 vorgegeben. Die Antriebsmaschine 9 bewegt die einzelnen Schafthebel 10 dementsprechend. Über das Gestänge 11 wird diese Bewegung auf die Webschäfte 2a bis 12f übertragen. Bei der Bewegungsübertragung wird die Bewegung etwas verändert. Mit anderen Worten, die Hub- oder Senkbewegung jedes Webschafts 2a bis 2f ist der Bewegung der einzelnen Schafthebel 10 aufgrund eines nichtlinearen Bewegungsübertragungsgesetzes nicht proportional.The movement of the heald frames 2a to 2f is predetermined by the heald
In
In
Im Gegensatz dazu nehmen die Differenzen zwischen Oberfach und Unterfach bei entsprechenden Fachwinkeln zwischen 30° und 34° bei konventionellen Webfach-Antriebsanordnungen mit zunehmendem Abstand von dem Gewebebindepunkt 5, wie die Kurven I bis III zeigen, geradezu extreme Ausmaße an. In
Mit der Erfindung werden die übermäßigen Belastungen von Kettfäden, Litzen und sonstigen Teilen der Fachbildemaschine 1, die Fachdifferenzen von über 9 mm hervorrufen können, grundsätzlich vermieden.With the invention, the excessive loads of warp threads, strands and other parts of the shedding machine 1, which can cause differences of more than 9 mm, basically avoided.
Die Erfindung kann, wie
Es ist auch möglich, eine solche oder andere Kupplung 29 an nur einem der beiden Hebelarme 25, 26 vorzusehen, wie es
Eine stufenweise Verstellung ist auch mit einem grundsätzlich starren Umlenkhebel 18 gemäß
Solche alternativen Anlenkpunkte können auch an dem Hebelarm 26 vorgesehen sein, was in
Eine weitere Alternative veranschaulicht
Während gemäß
Weitere Abwandlungen sind möglich, soweit sie dazu dienen, die wirksamen Winkel α, β oder γ zu verstellen und in der eingestellten Größe zu arretieren.Further modifications are possible, as far as they serve to adjust the effective angle α, β or γ and lock in the set size.
Eine erfindungsgemäße Fachbildemaschine 1 nutzt in ihrer Webfach-Antriebsanordnung 8 Umlenkhebel 18a, 18b, 18c, die einerseits die hin- und hergehende Antriebsbewegung von Verbindungsstangen 23a, 23b, 23c in auf- und abgehende Bewegungen von Hubstangen 15 umsetzen, und andererseits über Unterzugstangen 21 weitere Umlenkhebel 19, 20 antreiben. Die Umlenkhebel 18a, 18b, 18c haben unterschiedliche Winkel α, β, γ zwischen ihren Hebelarmen 25a, 25b, 25c und 26a, 26b, 26c. Vorzugsweise haben die Verbindungsstangen 23a, 23b, 23c entsprechend angepasst unterschiedliche Längen. Diese sind so bemessen, dass alle Webschäfte 2a, 2b, 2c in Fachschlussstellung stehen, wenn die Schafthebel 10a, b, c in Nullstellung stehen.A shedding machine 1 according to the invention utilizes in its shed-
Durch die unterschiedlichen Winkel α, β, γ an den Umlenkhebeln 18a, 18b, 18c wird erreicht, dass die Fachdifferenzen zwischen Oberfach und Unterfach gering und vom Abstand des Gewebebindepunkts 5 unabhängig werden.Due to the different angles α, β, γ on the reversing
- 11
- FachbildemaschineShedding machine
- 2, 2a - 2f2, 2a-2f
- Webschäfteheald
- 33
- Weblitzenhealds
- 4, 4a - 4f4, 4a-4f
- Kettfädenwarp
- 55
- GewebebindepunktFabric binding point
- 66
- Gewebetissue
- 77
- Webfachshed
- 88th
- Webfach-AntriebsanordnungShed drive assembly
- 99
- Antriebsmaschineprime mover
- 1010
- Schafthebelshaft lever
- 1111
- Gestängelinkage
- 12, 13, 1412, 13, 14
- Anschlüsseconnections
- 15, 16, 1715, 16, 17
- Hubstangenlifting rods
- 18, 19, 2018, 19, 20
- UmlenkhebelUmlenkhebel
- 21, 2221, 22
- UnterzugstangenUnterzugstangen
- 2323
- Verbindungsstangeconnecting rod
- 2424
- UmlenkhebelsatzUmlenkhebelsatz
- 2525
- Hebelarmlever arm
- 2626
- Hebelarmlever arm
- α, β, γα, β, γ
- Winkel zwischen 25a, 26a, 25b, 26b, 25c, 26cAngle between 25a, 26a, 25b, 26b, 25c, 26c
- 2727
- Schwenkachseswivel axis
- 2828
- Zahnkupplunggear coupling
- 2929
- Kupplungclutch
- 3030
- Verstelleinrichtungadjustment
- 3131
- Verschiebeeinrichtungshifter
- 3939
- Anlenkpunktarticulation
Claims (14)
- Heald frame drive arrangement (8) for multiple heald frames (2a, 2b),
with a linkage (11) for connecting the heald frames (2a, 2b) to a drive motor (9), which has a reciprocating driven output side (10a, 10b) for each heald frame (2a, 2b), with multiple reversing levers (18a, 18b), which each have two arms (25a, 26a; 25b, 26b), which define an angle (α, β) with one another and of which one arm (26a, 26b) is connected to the heald frame (2, 2b) and the other arm (25a, 25b) is connected to the output side (10a, 10b),
characterised in that the angles (α, β) of the reversing levers (18a, 18b) of two different heald frames (2a, 2b) are different. - Heald frame drive arrangement according to claim 1, characterised in that the angle (α) of the reversing lever (18a) of a heald frame (2a) lying close to the shed (7) is smaller than the angle (β) of a reversing lever (18b, 18c) of a heald frame (2b, 2c), which is remote from the shed (7).
- Heald frame drive arrangement according to claim 1, characterised in that the reversing lever (18) is connected to the output side (10) by means of a connecting rod (23).
- Heald frame drive arrangement according to claim 1, characterised in that each reversing lever (18a, 18b) is connected to the output side (10a, 10b) by means of a connecting rod (23a, 23b), wherein the individual connecting rods (23a, 23b) have different lengths.
- Heald frame drive arrangement according to claim 1, characterised in that the reversing lever (18a, 18b) is connected to the output side (10a, 10b) by means of a length-adjustable connecting rod (23a, 23b).
- Heald frame drive arrangement according to claim 1, characterised in that the reversing lever (18) is connected to a heald frame (2) by means of a lifter rod (15).
- Heald frame drive arrangement according to claim 1, characterised in that the reversing lever (18) is connected to the heald frame (2) by means of a length-adjustable lifter rod (15).
- Heald frame drive arrangement according to claim 1, characterised in that the arms (25a, 26a) of one reversing lever (18a) are as long as the arms (25b, 26b) of the other reversing lever (18b).
- Heald frame drive arrangement according to claim 1, characterised in that at least the lever arms (25, 26) of at least one reversing lever (18) are connected rigidly and undetachably to one another.
- Heald frame drive arrangement according to claim 1, characterised in that the lever arms (25, 26) of multiple reversing levers (18) are respectively connected rigidly and undetachably to one another.
- Reversing lever for a heald frame drive arrangement according to one of claims 1 to 9, characterised in that the lever arms (25, 26) of the reversing lever (18) are adjustable in relation to one another.
- Reversing lever according to claim 11, characterised in that the reversing lever (18) has an angle adjusting device (29, 30) for adjusting the angle (α, β).
- Reversing lever according to claim 12, characterised in that the angle adjusting device has a positive locking device (29, 30).
- Reversing lever according to claim 11, characterised in that the angle adjusting device fixes predefined adjustment steps.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08156672.1A EP2123813B1 (en) | 2008-05-21 | 2008-05-21 | Heald shaft drive, switching lever assembly and switching lever for such |
JP2009121367A JP5335555B2 (en) | 2008-05-21 | 2009-05-19 | Held shaft drive, set of deflection levers and deflection levers for this device |
CN2009101410750A CN101586279B (en) | 2008-05-21 | 2009-05-20 | Heald shaft drive, switching lever assembly and switching lever for such |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08156672.1A EP2123813B1 (en) | 2008-05-21 | 2008-05-21 | Heald shaft drive, switching lever assembly and switching lever for such |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2123813A1 EP2123813A1 (en) | 2009-11-25 |
EP2123813B1 true EP2123813B1 (en) | 2015-09-23 |
Family
ID=40090698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08156672.1A Active EP2123813B1 (en) | 2008-05-21 | 2008-05-21 | Heald shaft drive, switching lever assembly and switching lever for such |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2123813B1 (en) |
JP (1) | JP5335555B2 (en) |
CN (1) | CN101586279B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109252270A (en) * | 2018-11-27 | 2019-01-22 | 天津工业大学 | A kind of multifunctional stereo fabric formation equipment |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CS154950B1 (en) * | 1971-07-02 | 1974-04-30 | ||
CS165096B1 (en) * | 1973-01-22 | 1975-11-28 | ||
JPS6028542A (en) * | 1983-07-26 | 1985-02-13 | 日産自動車株式会社 | Crank type warp yarn opening apparatus of loom |
-
2008
- 2008-05-21 EP EP08156672.1A patent/EP2123813B1/en active Active
-
2009
- 2009-05-19 JP JP2009121367A patent/JP5335555B2/en active Active
- 2009-05-20 CN CN2009101410750A patent/CN101586279B/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN101586279B (en) | 2011-08-31 |
CN101586279A (en) | 2009-11-25 |
JP2009299252A (en) | 2009-12-24 |
EP2123813A1 (en) | 2009-11-25 |
JP5335555B2 (en) | 2013-11-06 |
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