EP2161356A1 - Spinning frame with a pneumatic condensing device - Google Patents
Spinning frame with a pneumatic condensing device Download PDFInfo
- Publication number
- EP2161356A1 EP2161356A1 EP08015531A EP08015531A EP2161356A1 EP 2161356 A1 EP2161356 A1 EP 2161356A1 EP 08015531 A EP08015531 A EP 08015531A EP 08015531 A EP08015531 A EP 08015531A EP 2161356 A1 EP2161356 A1 EP 2161356A1
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- EP
- European Patent Office
- Prior art keywords
- negative pressure
- induced draft
- suction
- display element
- spinning machine
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- 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.)
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- 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
- D01H5/70—Constructional features of drafting elements
- D01H5/72—Fibre-condensing guides
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01H—SPINNING OR TWISTING
- D01H13/00—Other common constructional features, details or accessories
- D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
Definitions
- the invention relates to a spinning machine comprising a plurality of spinning stations, each having a drafting device, a pneumatic compacting device and a swirl generating device for at least one fiber strand, wherein a plurality of such devices are arranged side by side in the spinning machine, and the compacting means an evacuated compacting surface for compacting over the compacting surface guided fiber strand and a suction device, via which the suction air flowing through the evacuated compression surface into the suction device is discharged.
- Spinning machines in particular ring spinning machines, with pneumatic compression devices are known from the prior art.
- the pneumatic compression device serves the purpose of compressing a stretched fiber structure, wherein edge fibers protruding from the fiber structure by exerting an induced draft are guided towards the fiber structure and the fiber structure is generally compacted. Thanks to the pneumatic compaction process, a fine yarn of low hairiness can be produced.
- the suction insert is connected to a suction line, via which an induced by a vacuum source induced suction is applied.
- the compaction effect is achieved by ambient air through the openings in the outer circumference of the screen drum and the suction slot of the underlying suction insert is sucked into the suction line.
- Object of the present invention is therefore to propose a device by means of which a reduced or absent suction at the compression surface of the compacting device easily detected and can be corrected quickly, so that the quality of the yarn produced is impaired as little as possible.
- the suction device are associated with negative pressure indicating means for optically displaying a negative pressure or induced draft at the respective spinning station and thereby reduced compression suction power
- the negative pressure indicating means comprise a display element and return means acting on the display element, wherein the negative pressure the display element exerts a force, and the restoring means exert a negative pressure on the display element, and the negative pressure and the return means cooperate with each other such that when the negative pressure or the induced draft or when a negative pressure threshold or induced draft, the display element changes its position and / or shape due to the restoring force of the return means.
- the vacuum indicating means comprise a hollow body, wherein the indicating means is a sliding body movably guided in the hollow body, on which a induced draft is exerted, by means of which the displacement body is guided and held in a certain position within the hollow body.
- the shape, nature and arrangement of the hollow body to the suction device and the shape, nature and arrangement of the sliding body in the hollow body are such that upon decrease of the negative pressure or the induced draft or falls below a threshold value for the negative pressure or the induced draft of the sliding body due the force acting on this gravity changes its position within the hollow body. That the displacement body moves due to gravity into another, suitably lower lying area of the hollow body.
- Gravity acts in this case as a return means.
- the restoring force can also be exerted by means of a return element on the sliding body.
- the restoring element can be designed according to one of the embodiments described below (see third embodiment of the vacuum gauge).
- the change in the position of the displacement body is such that it can be perceived by an external operator, so that a malfunction of the compression device can be derived for the operator.
- the displacement body is preferably a rolling body, in particular a spherical body.
- the hollow body is in the form of an elongated hollow cylinder, in which the sliding body is displaceably guided.
- the hollow body preferably has an inclination, wherein the highest point of the hollow body is closer to the connection point to the suction device than the lowest point.
- the sliding body is inclined by gravity, at the deepest Position the hollow body to position.
- the inclination is only so strong that the normal operation on the sliding body acting suction train may shift the sliding body in the hollow body in the inclination up to the suction device.
- the hollow body is preferably transparent, so that the displacement body is visible in the hollow body from the outside.
- the hollow body preferably has air inlet openings, via which the air volume discharged through the induced draft can be replaced.
- the sliding body can be colored with a signal color.
- the displacement body is preferably designed in such a way that it occupies as completely as possible the cross section of the hollow body, without, however, causing it to be displaceable, e.g. B. by jamming, is impaired.
- the indicating means comprise a deformable body on which a suction or negative pressure is exerted, which causes a change in the shape or the size of the body.
- the body or parts thereof have a resilience, which counteracts the induced draft or negative pressure, so that when the negative pressure or the induced draft decreases, the shape of the body is continuously or abruptly changed due to the restoring forces acting on the body.
- the body or parts thereof consists of a flexible material with resilience.
- the body is dimensionally stable under atmospheric pressure conditions and variable in its form or size when exerting a suction or negative pressure.
- the flexible material may, for. B. rubber-elastic or elastic properties have, which exert a counter to the negative pressure or the induced draft restoring force on the shape-changeable body.
- the display means comprise a shape-variable hollow body which is attached to the suction device, such that in the cavity of a suction is applied, by means of which the shape or size of the hollow body is changed.
- the nature of the hollow body is such that when the negative pressure or the induced draft, the shape of the hollow body is changed due to the restoring forces acting on the hollow body.
- the change in shape is preferably in an expansion, bulging or unfolding of the hollow body walls, ie in an increase in the volume of the body due to the restoring forces acting on the body.
- the hollow body is preferably dimensionally stable under prevailing atmospheric pressure conditions inside and outside the hollow body.
- the hollow body is preferably in the form of a cylindrical bellows whose Faltenbalg Vietnamese has a resilience.
- the bellows folds together reducing its volume.
- the bellows unfolds under volume increase due to the acting restoring forces in Zylinderachsraum. In this way, a malfunction is visually displayed in the area of the compression area.
- the hollow body may also be a balloon-shaped body, the shell of which has a resilience, which counteracts the negative pressure or the induced draft, so that upon removal of the negative pressure or the induced draft, the balloon envelope unfolds or bulges outwards.
- the display element is in the form of a dome-shaped membrane which has a resilience counteracting the negative pressure or the induced draft, so that the membrane is everted when the pressure falls below a limit value for the negative pressure or for the induced draft ,
- the resilience is justified by an axial bias of the membrane.
- the membrane has at its triggered by changing the negative pressure or the induced draft change a Umspringtician or Umschlagtician ("mechanical dead center”), in which the membrane jumps from a concave shape into a convex shape.
- the membrane is designed and arranged on the suction device, that it is formed concave inward when the induced draft from the outside and absent or too low suction convex outwards. While an outside observer scarcely perceives the concave curvature of the membrane, it immediately catches the convexly outwardly convex membrane when the induced draft disappears.
- the perception can be enhanced by a coloring of the membrane by a striking signal color.
- a display element is connected to a return element in the form of a spring or a resilient body, which counteract the negative pressure or the induced draft, so that when the negative pressure or the induced draft, the position of the display element due to the return action of the spring or the elastic body is changeable.
- the spring can z. B. be a spiral or coil spring.
- the elastic body can z. B. spring steel or a plastic with resilient properties.
- the compacting device may include a rotatable compacting drum having a preferably annular cavity and a peripheral surface forming the compacting surface and provided with apertures.
- the suction device comprises a suction insert with suction opening, which is introduced into the cavity of the compression drum and stored therein stationary.
- the vacuum indicating means are mounted on the suction insert, wherein the display element is arranged laterally outside the compression drum.
- the compression device comprises a circumferential, perforated Verdichtungsriemchen whose peripheral surface forms the compression surface.
- the suction device comprises a stationary mounted suction insert with suction opening, over which the Verdichtungsriemchen is guided.
- the vacuum indicating means are mounted on the suction insert, wherein the display element is arranged laterally outside the circulation area of the compacting belt.
- the negative pressure indicating means are preferably arranged in a front end section of the suction insert, viewed in the direction of flow of the fiber structure.
- the invention further relates to a suction device for a pneumatic compression device of a spinning machine.
- the suction device comprises negative pressure indicating means for optically displaying a negative pressure or induced draft at the respective spinning station and thereby reduced suction power, the negative pressure indicating means including a display element and return means acting on the display element, the negative pressure acting on the display element exerts a force, and the restoring means exert a, the negative pressure opposing force on the display element, and the negative pressure and the return means cooperate with each other such that upon decrease of the negative pressure or the induced draft or falls below a threshold value for the vacuum or induced draft, the display element changes its position and / or shape due to the restoring force of the return means.
- the invention also relates to a negative pressure indicating means for the suction device of a pneumatic compression device of a spinning machine for optically displaying a falling at the spinning station vacuum or induced draft and thereby reduced Verdichtungssaug
- the negative pressure indicating means comprise a display element and acting on the display element return means which the negative pressure counteract the suction, wherein the negative pressure on the display element exerts a force, and the return means exert a, the vacuum counteracting force on the display element, and the negative pressure and the return means cooperate with each other such that upon decrease of the negative pressure or the induced draft or falls below a threshold value for the negative pressure or induced draft, the display element due to the restoring force of the return means changes its position and / or shape.
- the spinning machine may be a ring spinning, funnel spinning, bell spinning or pot spinning machine.
- FIG. 1a shows a suction device 9 with a suction insert 1 and a subsequent to the suction insert 1 suction line 11 for a pneumatic compression device.
- the suction insert 1 has a suction slot 2 through which the air extracted from the compression area (not shown) (arrow 6) is removed. The air is fed through the suction insert 1 and the suction line 11 to a suction channel (arrow 7).
- vacuum indicating means 10 are mounted with a laterally arranged, cylindrical bellows 5.
- the bellows is connected via connecting means 3, 4 with the suction insert 1.
- the connecting means 3, 4 comprise an attachment 3, which is applied to the suction insert 1 and connected via a snap connection or adhesive bond thereto.
- the attachment 3 contains a connection interface 4, to which the bellows 5 is attached to the attachment 3.
- the attachment 3 is part of the vacuum indicating means 10.
- the connection interface 4 has a passage from the suction insert 1 to the display means 5 for the suction air 8.
- an attachment is dispensed with; instead, the attachment 3 and the connection interface 4 for the negative pressure display means 10 are integrated into the suction insert 1.
- FIG. 1b shows an arrangement according to FIG. 1a , in which, however, no or only a reduced negative pressure or induced draft in the suction insert 1 prevails.
- the bellows 5 is therefore unfolded due to the force acting on the bellows structure against the induced return force in the axial direction under increasing the volume.
- FIG. 2 shows the arrangement according to FIG. 1 a and 1 b at the compression device 21 a twin spinning station.
- the compacting device 21 comprises, per spinning station, a screen drum 26a, 26b mounted on a driven lower cylinder 23.
- the screen drum 26a, 26b has a rotating jacket surface 90 (see also FIG Fig. 7 ), which form the compression surface 27a, 27b.
- the lateral surface 90 is provided with openings 28a, 28b, through which the compression surface 27a, 27b is sucked.
- the suction insert 1 a, 1 b (dashed) is laterally inserted into an annular recess 91 in the screen drum 26 a, 26 b, wherein the lateral surface 90 forms the outer boundary of the annular recess.
- the suction insert 1 lies with its suction opening 2a, 2b) directly under the lateral surface 90th
- the fiber bundle 29a, 29b to be compacted is conveyed in the fiber flow direction 17 out of the drafting system (not shown) through the nip line formed by the screen drum 26a, 26b and a drafting head top roller 25a, 25b onto the compacting surface 27a, 27b.
- the fiber bundle 29a, 29b to be compacted is guided onto the compacting surface 27a, 27b, pneumatically compacted and leaves the compacting device 21 via the rotational locking gap formed by the rotary locking roller 30a, 30b and the screen drum 26a, 26b in the direction of a swirl-producing member (not shown).
- the swirl-producing member causes the sliver to turn into a yarn. This happens with ring spinning machines z. Example by means of a ring-traveler system, which cooperates with a rotating spindle.
- the anti-rotation rollers 30a, 30b and delivery rollers 25a, 25b are supported in a known manner by a guide arm 22, 24 which supports the upper rollers 30a, 30b; 25a, 25b press on the underlying screening drum 26a, 26b.
- each spinning station output Drehsperrspalt in a known manner a Fadenabsaugrohr 31 a, 31 b assigned.
- the suction inserts 1 a, 1 b are laterally inserted into the screen drum 26 a, 26 b.
- the bellows 5 a, 5 b is arranged laterally on the suction insert 1 a, 1 b in the direction of the lateral screen drum opening, so that the bellows 5 a protrudes in the unfolded state laterally of the screen drum 26 a, 26 b.
- the unfolded state of the bellows 5 a is triggered by the compression device 21 in the case of missing or defective suction power.
- FIG. 2 which is the compression device 21 in front view, ie from the perspective of the operator, can be seen, a poor suction at the spinning station immediately on the protruding bellows 5a recognizable.
- the bellows 5b is folded by the suction and therefore optically not or only badly noticeable.
- FIG. 2 Incidentally, on the embodiments according to the Figures 3 . 4 . 5 and 6 hold true.
- the embodiments according to the Figures 3 . 4 . 5 and 6 also show negative pressure indicating means 16, 49, 59, 79 with an attachment 13, 43, 53, 73 and corresponding connection interfaces 14, 44, 54, 74.
- the connection interfaces 14, 44, 54, 74 have passages from the suction insert (not shown) to the indicating element 15, 46, 55, 75 for the suction air 18, 48, 58, 78 on.
- the embodiment according to the FIGS. 3a, 3b comprises a balloon-shaped display element 15 with a flexible shell, which has a counteracting the induced draft recovery. Thanks to the resilience of the balloon body is in accordance with prevailing ambient pressure in its cavity in its unfolded size FIG. 3b in front. If an induced draft 18 is now created inside the balloon body 15, as happens during the compression process, a negative pressure arising in relation to the ambient pressure in the interior of the cavity causes the balloon wall to bulge inward or fold and the cavity to be reduced (FIG. Fig. 3a ). As soon as the induced draft disappears or is reduced, the balloon envelope folds or bulges due to the restoring forces, increasing the void volume and thus becomes visible to the operating personnel. The resilience is achieved here by flexible and possibly elastic embodiment of the balloon envelope.
- the balloon body 55, 55a, 55b according to Figure 5a-c arranged in a sleeve-shaped guide body 56 with a recess 57.
- the induced draft 18 inside the balloon body 55b causes the balloon wall to bulge inward and reduce the cavity (FIG. FIG. 5c ), so that the balloon body 55b is hardly or not visible in the recess.
- the balloon envelope 55a folds outward and outwardly enlarging the cavity volume and occupies the place in the recess 57 of the sleeve-shaped body 56.
- FIG. 5b ).
- the recess 57 and the sleeve body 56 is arranged at the spinning station or on the suction insert that the operator looks at the control of the spinning unit laterally to the recess 57, which then as a U, C or V-shaped recess on the sleeve body 56 is perceptible ( Figure 5b, 5c ).
- the recess may also be present as a laterally perceptible one-sided or continuous opening in the sleeve body, which is arranged so that the operator looks at them head-on (not shown).
- the embodiment according to the FIGS. 4a and 4b shows a freely movable in a cylindrical tube 45, spherical roller 46 according to the first embodiment.
- the cylindrical tube 45 is a closed hollow body, which is connected via a connection interface 44 and a cap 43 to the suction insert (not shown).
- the cavity of the cylindrical tube 45 and the suction insert are communicatively connected to each other via an air passage.
- the tube 45 may further have at its free end an air passage 47 to the atmospheric environment.
- the tube 45 rises from its free end to the connection interface 44, so that the sliding body 46 is inclined to roll down to the free end of the tube 45 due to the force of gravity acting on it.
- the roller 46 In trouble-free operation, however, the roller 46 is pulled towards the connection interface 44 by the induced against the force of gravity suction 48. However, if the induced draft 48 fails or falls below a certain threshold value, then the rolling element 46 shifts in the direction of the free end of the tube 45 and indicates in this way the presence of a compaction disturbance.
- the embodiment according to the Figures 6a and 6b shows a display element 75 in the form of a dome-shaped membrane, which is connected via a connection interface 74 and a cap 73 with a suction insert (not shown).
- the membrane 75 is flexible and separates the evacuated cavity of the absorbent insert from the atmospheric environment.
- the membrane 75 has a resilience, which makes them bulge outwards in atmospheric conditions on both sides. This resilience counteracts the induced draft 78, which pulls the membrane inwards toward the suction insert. Between these two positions, the membrane has a Umspringddling over which the membrane jumps from one layer to the other. If the induced draft 78 now stops or falls below a certain threshold value, then the membrane jumps outward and bulges accordingly. In this way, the spinning staff is notified of the presence of a compaction disturbance.
- FIG. 7 shows the screen drum 26a, 26b according to FIG. 2 in a side view.
- the sieve drum is open to the view side. This corresponds to FIG. 2 the to Loading arm 22, 24 facing side at the spinning station pairing.
- the vacuum display element 5a, 5b is arranged at this side opening at the lower end portion of the suction insert 1a, 1b and extends in unfolded or expanded state, ie in the presence of a compression disorder laterally outside the screen drum 26a, 26b.
- the suction line 11 is arranged at the upper end portion of the suction insert 1 a, 1 b.
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Abstract
Description
Die Erfindung betrifft eine Spinnmaschine enthaltend eine Mehrzahl von Spinnstellen mit jeweils einem Streckwerk, einer pneumatischen Verdichtungseinrichtung und einer Drallerzeugungseinrichtung für jeweils mindestens einen Faserverband, wobei mehrere solche Einrichtungen nebeneinander in der Spinnmaschine angeordnet sind, und die Verdichtungseinrichtung eine besaugte Verdichtungsfläche zum Verdichten des über die Verdichtungsfläche geführten Faserverbandes und eine Saugeinrichtung enthält, über welche die durch die besaugte Verdichtungsfläche in die Saugeinrichtung strömende Saugluft abgeführt wird.The invention relates to a spinning machine comprising a plurality of spinning stations, each having a drafting device, a pneumatic compacting device and a swirl generating device for at least one fiber strand, wherein a plurality of such devices are arranged side by side in the spinning machine, and the compacting means an evacuated compacting surface for compacting over the compacting surface guided fiber strand and a suction device, via which the suction air flowing through the evacuated compression surface into the suction device is discharged.
Spinnmaschinen, insbesondere Ringspinnmaschinen, mit pneumatischen Verdichtungseinrichtungen sind aus dem Stand der Technik bekannt. Die pneumatische Verdichtungseinrichtung dient dem Zweck des Verdichtens eines verstreckten Faserverbandes, wobei durch Ausüben eines Saugzuges auf den Faserverband abstehende Randfasern zum Faserverband hin geführt werden und der Faserverband ganz allgemein kompaktiert wird. Dank dem pneumatischen Verdichtungsprozess lässt sich ein feines Garn von geringer Haarigkeit herstellen.Spinning machines, in particular ring spinning machines, with pneumatic compression devices are known from the prior art. The pneumatic compression device serves the purpose of compressing a stretched fiber structure, wherein edge fibers protruding from the fiber structure by exerting an induced draft are guided towards the fiber structure and the fiber structure is generally compacted. Thanks to the pneumatic compaction process, a fine yarn of low hairiness can be produced.
Es sind verschiedene Ausführungsformen von pneumatischen Verdichtungseinrichtungen aus dem Stand der Technik bekannt. So wird z. B. in der
Fällt nun die Saugwirkung aus oder wird diese reduziert, so verschlechtert sich entsprechend die Verdichtungswirkung oder bleibt gänzlich aus, wodurch die Haarigkeit des Garnes zunimmt. Es kann nun vorkommen, dass es im Inneren der Saugeinrichtung, insbesondere im Inneren des Saugeinsatzes, zu einer Verstopfung augrund einer Ansammlung von angesaugtem Faserflug und anderem Schmutz kommt. Diese Verstopfung führt zu einer Reduktion oder zu einem Ausbleiben der Saugleistung an der Verdichtungsfläche und somit zu einer Verschlechterung der Garnqualität. Durch die Herausnahme und Reinigung des Saugeinsatzes können solche Verstopfungen relativ schnell und ohne grossen Aufwand beseitigt werden.If the suction now fails or is reduced, the compaction effect correspondingly deteriorates or disappears completely, as a result of which the hairiness of the yarn increases. It may now happen that there is a blockage augrund a collection of sucked fiber fly and other dirt inside the suction device, especially in the interior of the suction insert. This clogging leads to a reduction or to a lack of suction power at the compression surface and thus to a deterioration of the yarn quality. By removing and cleaning the absorbent insert such blockages can be removed relatively quickly and without much effort.
Das Problem liegt jedoch darin, dass eine solche Verstopfung bzw. das Ausbleiben des Saugzuges an der Verdichtungsfläche von Auge kaum erkennbar ist. Die Störung wird erst spät, nämlich bei der Feststellung der schlechten Garnqualität erkannt.The problem, however, is that such a blockage or the absence of the induced draft at the compression surface of the eye is barely recognizable. The disturbance is detected late, namely when determining the poor yarn quality.
Aufgabe vorliegender Erfindung ist es daher, eine Einrichtung vorzuschlagen, mittels welcher eine verminderte oder ausbleibende Saugleistung an der Verdichtungsfläche der Verdichtungseinrichtung leicht erkannt und entsprechend schnell behoben werden kann, so dass die Qualität des produzierten Garnes möglichst wenig beeinträchtigt wird.Object of the present invention is therefore to propose a device by means of which a reduced or absent suction at the compression surface of the compacting device easily detected and can be corrected quickly, so that the quality of the yarn produced is impaired as little as possible.
Die Aufgabe wird dadurch gelöst, dass der Saugeinrichtung Unterdruckanzeigemittel zur optischen Anzeige eines an der betreffenden Spinnstelle ab- oder ausfallenden Unterdruckes bzw. Saugzuges und dadurch verminderten Verdichtungssaugleistung zugeordnet sind, wobei die Unterdruckanzeigemittel ein Anzeigeelement und auf das Anzeigeelement wirkende Rückstellmittel enthalten, wobei der Unterdruck auf das Anzeigeelement eine Kraft ausübt, und die Rückstellmittel eine, dem Unterdruck entgegen gerichtete Kraft auf das Anzeigeelement ausüben, und der Unterdruck und die Rückstellmittel derart miteinander zusammenwirken, dass bei Abnahme des Unterdrucks bzw. des Saugzuges oder bei Unterschreitung eines Schwellenwertes für den Unterdruck bzw. Saugzug, das Anzeigeelement aufgrund der Rückstellkraft der Rückstellmittel seine Position und/oder Form ändert.The object is achieved in that the suction device are associated with negative pressure indicating means for optically displaying a negative pressure or induced draft at the respective spinning station and thereby reduced compression suction power, wherein the negative pressure indicating means comprise a display element and return means acting on the display element, wherein the negative pressure the display element exerts a force, and the restoring means exert a negative pressure on the display element, and the negative pressure and the return means cooperate with each other such that when the negative pressure or the induced draft or when a negative pressure threshold or induced draft, the display element changes its position and / or shape due to the restoring force of the return means.
Gemäss einer ersten Ausführungsform der Erfindung beinhalten die Unterdruckanzeigemittel einen Hohlkörper, wobei das Anzeigemittel ein im Hohlkörper beweglich geführter Verschiebekörper ist, auf welchen ein Saugzug ausgeübt wird, mittels welchem der Verschiebekörper in einer bestimmte Position innerhalb des Hohlkörpers geführt und gehalten wird. Die Form, Beschaffenheit und Anordnung des Hohlkörpers an der Saugeinrichtung sowie die Form, Beschaffenheit und Anordnung des Verschiebekörper im Hohlkörper sind dabei dergestalt, dass bei Abnahme des Unterdruckes bzw. des Saugzuges oder bei Unterschreitung eines Schwellenwertes für den Unterdruck bzw. den Saugzug der Verschiebekörpers aufgrund der auf diesen wirkenden Schwerkraft seine Position innerhalb des Hohlkörpers verändert. D.h. der Verschiebekörper bewegt sich aufgrund der Schwerkraft in einen anderen, zweckmässig tiefer liegenden Bereich des Hohlkörpers.According to a first embodiment of the invention, the vacuum indicating means comprise a hollow body, wherein the indicating means is a sliding body movably guided in the hollow body, on which a induced draft is exerted, by means of which the displacement body is guided and held in a certain position within the hollow body. The shape, nature and arrangement of the hollow body to the suction device and the shape, nature and arrangement of the sliding body in the hollow body are such that upon decrease of the negative pressure or the induced draft or falls below a threshold value for the negative pressure or the induced draft of the sliding body due the force acting on this gravity changes its position within the hollow body. That the displacement body moves due to gravity into another, suitably lower lying area of the hollow body.
Die Schwerkraft wirkt in diesem Fall als Rückstellmittel. Anstelle der Schwerkraft kann die Rückstellkraft jedoch auch mittels eines Rückstellelementes auf den Verschiebekörper ausgeübt werden. Das Rückstellelement kann nach einer der weiter unten beschriebenen Ausführungsformen (siehe dritte Ausführungsform der Unterdruckanzeige) ausgestaltet sein.Gravity acts in this case as a return means. However, instead of gravity, the restoring force can also be exerted by means of a return element on the sliding body. The restoring element can be designed according to one of the embodiments described below (see third embodiment of the vacuum gauge).
Die Veränderung der Position des Verschiebkörpers ist derart, dass diese von einer aussen stehenden Bedienperson wahrnehmbar, so dass sich daraus für die Bedienperson eine Funktionsstörung der Verdichtungseinrichtung ableiten lässt. Der Verschiebkörper ist bevorzugt ein Rollkörper, insbesondere ein kugelförmiger Körper.The change in the position of the displacement body is such that it can be perceived by an external operator, so that a malfunction of the compression device can be derived for the operator. The displacement body is preferably a rolling body, in particular a spherical body.
Gemäss einer Weiterentwicklung dieser ersten Ausführungsform liegt der Hohlkörper in Form eines länglichen Hohlzylinders vor, in welchem der Verschiebkörper verschiebbar geführt ist. Der Hohlkörper weist bevorzugt eine Neigung aus, wobei der höchste Punkt des Hohlkörpers näher an der Verbindungsstelle zur Saugeinrichtung liegt als der tiefste Punkt. Der Verschiebekörper ist aufgrund der Schwerkraft geneigt, sich an der tiefsten Stelle des Hohlkörpers zu positionieren. Die Neigung ist jedoch nur so stark, dass der im Normalbetrieb auf den Verschiebekörper wirkende Saugzug den Verschiebkörper im Hohlkörper in der Neigung aufwärts zur Saugeinrichtung hin verschieben mag.According to a further development of this first embodiment, the hollow body is in the form of an elongated hollow cylinder, in which the sliding body is displaceably guided. The hollow body preferably has an inclination, wherein the highest point of the hollow body is closer to the connection point to the suction device than the lowest point. The sliding body is inclined by gravity, at the deepest Position the hollow body to position. However, the inclination is only so strong that the normal operation on the sliding body acting suction train may shift the sliding body in the hollow body in the inclination up to the suction device.
Der Hohlkörper ist bevorzugt transparent ausgebildet, so dass der Verschiebkörper im Hohlkörper von aussen sichtbar ist. Der Hohlkörper weist bevorzugt Lufteinlassöffnungen auf, über welche das durch den Saugzug abgeführte Luftvolumen ersetzbar ist. Der Verschiebkörper kann mit einer Signalfarbe eingefärbt sein. Der Verschiebkörper ist bezüglich Grösse und Geometrie bevorzugt derart ausgebildet, dass dieser möglichst vollständig den Querschnitt des Hohlkörpers einnimmt, ohne dass dadurch jedoch seine Verschiebbarkeit, z. B. durch Verklemmen, beeinträchtigt wird.The hollow body is preferably transparent, so that the displacement body is visible in the hollow body from the outside. The hollow body preferably has air inlet openings, via which the air volume discharged through the induced draft can be replaced. The sliding body can be colored with a signal color. In terms of size and geometry, the displacement body is preferably designed in such a way that it occupies as completely as possible the cross section of the hollow body, without, however, causing it to be displaceable, e.g. B. by jamming, is impaired.
Gemäss einer zweiten Ausführungsform der Erfindung beinhalten die Anzeigemittel einen formveränderbaren Körper, auf welchen ein Saugzug bzw. Unterdruck ausgeübt wird, der eine Änderung der Form bzw. der Grösse des Körpers bewirkt. Der Körper oder Teile davon verfügen über ein Rückstellvermögen, welches dem Saugzug bzw. Unterdruck entgegenwirkt, so dass bei Abnahme des Unterdrucks bzw. des Saugzuges die Form des Körpers aufgrund der auf den Körper wirkenden Rückstellkräften kontinuierlich oder sprunghaft verändert wird.According to a second embodiment of the invention, the indicating means comprise a deformable body on which a suction or negative pressure is exerted, which causes a change in the shape or the size of the body. The body or parts thereof have a resilience, which counteracts the induced draft or negative pressure, so that when the negative pressure or the induced draft decreases, the shape of the body is continuously or abruptly changed due to the restoring forces acting on the body.
Gemäss einer Weiterentwicklung der zweiten Ausführungsform besteht der Körper oder Teile davon aus einem flexiblen Material mit Rückstellvermögen. Der Körper ist unter atmosphärischen Druckbedingungen formstabil und bei Ausüben eines Saugzuges bzw. Unterdruck in seiner Form bzw. Grösse veränderbar. Das flexible Material kann z. B. gummielastische oder federelastische Eigenschaften haben, welche eine entgegen des Unterdruckes bzw. des Saugzuges wirkende Rückstellkraft auf den formveränderbaren Körper ausüben.According to a further development of the second embodiment, the body or parts thereof consists of a flexible material with resilience. The body is dimensionally stable under atmospheric pressure conditions and variable in its form or size when exerting a suction or negative pressure. The flexible material may, for. B. rubber-elastic or elastic properties have, which exert a counter to the negative pressure or the induced draft restoring force on the shape-changeable body.
Gemäss einer ersten Variante der zweiten Ausführungsform beinhalten die Anzeigemittel einen formveränderbaren Hohlkörper, welcher an die Saugeinrichtung angebracht ist, derart dass in dessen Hohlraum ein Saugzug ausgeübt wird, mittels welchem die Form bzw. Grösse des Hohlkörpers verändert wird. Die Beschaffenheit des Hohlkörpers ist dergestalt, dass bei Abnahme des Unterdrucks bzw. des Saugzuges die Form des Hohlkörpers aufgrund der auf den Hohlkörper wirkenden Rückstellkräften verändert wird. Die Formveränderung liegt bevorzugt in einer Ausdehnung, Auswölbung oder Entfaltung der Hohlkörperwände, d.h. in einer Volumenvergrösserung des Körpers aufgrund der auf den Körper wirkenden Rückstellkräfte. Der Hohlkörper ist bevorzugt formstabil bei herrschenden atmosphärischen Druckbedingungen innerhalb und ausserhalb des Hohlkörpers.According to a first variant of the second embodiment, the display means comprise a shape-variable hollow body which is attached to the suction device, such that in the cavity of a suction is applied, by means of which the shape or size of the hollow body is changed. The nature of the hollow body is such that when the negative pressure or the induced draft, the shape of the hollow body is changed due to the restoring forces acting on the hollow body. The change in shape is preferably in an expansion, bulging or unfolding of the hollow body walls, ie in an increase in the volume of the body due to the restoring forces acting on the body. The hollow body is preferably dimensionally stable under prevailing atmospheric pressure conditions inside and outside the hollow body.
Der Hohlkörper liegt bevorzugt in der Form eines zylinderförmigen Faltenbalges vor, dessen Faltenbalgstruktur über ein Rückstellvermögen verfügt. Bei der Anwendung eines bestimmten Unterdruckes bzw. Saugzuges faltet sich der Faltenbalg unter Verkleinerung seines Volumens zusammen. Bei Abnahme des Unterdruckes bzw. des Saugzuges entfaltet sich der Faltenbalg unter Volumenzunahme aufgrund der wirkenden Rückstellkräfte in Zylinderachsrichtung. Auf diese Weise wird optisch eine Funktionsstörung im Bereich der Verdichtungsfläche angezeigt.The hollow body is preferably in the form of a cylindrical bellows whose Faltenbalgstruktur has a resilience. When using a certain negative pressure or induced draft, the bellows folds together reducing its volume. When the negative pressure or the induced draft decreases, the bellows unfolds under volume increase due to the acting restoring forces in Zylinderachsrichtung. In this way, a malfunction is visually displayed in the area of the compression area.
Der Hohlkörper kann auch ein ballonförmiger Körper sein, dessen Hülle über ein Rückstellvermögen verfügt, welches dem Unterdruck bzw. dem Saugzug entgegenwirkt, so dass sich bei Abnahme des Unterdrucks bzw. des Saugzuges die Ballonhülle nach aussen entfaltet bzw. wölbt.The hollow body may also be a balloon-shaped body, the shell of which has a resilience, which counteracts the negative pressure or the induced draft, so that upon removal of the negative pressure or the induced draft, the balloon envelope unfolds or bulges outwards.
Gemäss einer zweiten Variante der zweiten Ausführungsform liegt das Anzeigeelement in Form einer kalottenförmigen Membran vor, welche über ein Rückstellvermögen verfügt, das dem Unterdruck bzw. dem Saugzug entgegenwirkt, so dass bei Unterschreiten eines Grenzwertes für den Unterdruck bzw. für den Saugzug die Membran umgestülpt wird. Das Rückstellvermögen wird durch eine axiale Vorspannung der Membran begründet. Die Membran weist dazu bei ihrer durch Veränderung des Unterdruckes bzw. des Saugzuges ausgelösten Formänderung einen Umspringpunkt oder Umschlagpunkt ("mechanischer Totpunkt") auf, bei welchem die Membran sprungartig von einer konkaven Form in eine konvexe Form umspringt. Die Membran ist so beschaffen und an der Saugeinrichtung angeordnet, dass diese bei herrschendem Saugzug von aussen betrachtet konkav nach innen geformt ist und bei fehlendem oder zu geringem Saugzug konvex nach aussen geformt ist. Während ein aussen stehender Betrachter die konkave Einwölbung der Membran kaum wahrnimmt, sticht diesem die konvex nach aussen gewölbte Membran bei Nachlassen des Saugzuges sofort ins Auge. Die Wahrnehmung kann noch mittels einer Einfärbung der Membran durch eine auffällige Signalfarbe verstärkt werden.According to a second variant of the second embodiment, the display element is in the form of a dome-shaped membrane which has a resilience counteracting the negative pressure or the induced draft, so that the membrane is everted when the pressure falls below a limit value for the negative pressure or for the induced draft , The resilience is justified by an axial bias of the membrane. The membrane has at its triggered by changing the negative pressure or the induced draft change a Umspringpunkt or Umschlagpunkt ("mechanical dead center"), in which the membrane jumps from a concave shape into a convex shape. The membrane is designed and arranged on the suction device, that it is formed concave inward when the induced draft from the outside and absent or too low suction convex outwards. While an outside observer scarcely perceives the concave curvature of the membrane, it immediately catches the convexly outwardly convex membrane when the induced draft disappears. The perception can be enhanced by a coloring of the membrane by a striking signal color.
Gemäss einer dritten Ausführungsform der Erfindung ist ein Anzeigeelement mit einem Rückstellelement in Form einer Feder oder eines federelastischen Körpers verbunden, die dem Unterdruck bzw. dem Saugzug entgegenwirken, so dass bei Abnahme des Unterdrucks bzw. des Saugzuges die Position des Anzeigeelements aufgrund der Rückstellwirkung der Feder oder des elastischen Körpers veränderbar ist. Eine aussen stehende Person kann aufgrund der Position des Anzeigelementes eine Funktionsstörung an der Verdichtungseinrichtung feststellen. Die Feder kann z. B. eine Spiral- oder Schraubenfeder sein. Der federelastische Körper kann z. B. aus Federstahl oder einem Kunststoff mit federelastischen Eigenschaften sein.According to a third embodiment of the invention, a display element is connected to a return element in the form of a spring or a resilient body, which counteract the negative pressure or the induced draft, so that when the negative pressure or the induced draft, the position of the display element due to the return action of the spring or the elastic body is changeable. An outside person may notice a malfunction in the compactor due to the position of the indicator. The spring can z. B. be a spiral or coil spring. The elastic body can z. B. spring steel or a plastic with resilient properties.
Die Verdichtungseinrichtung kann eine drehbare Verdichtungstrommel mit einem, vorzugsweise ringförmigen, Hohlraum sowie mit einer, die Verdichtungsfläche ausbildende und mit Durchbrüchen versehene Umfangsfläche beinhalten. Die Saugeinrichtung umfasst einen Saugeinsatz mit Saugöffnung, welcher in den Hohlraum der Verdichtungstrommel eingeführt und darin stationär gelagert ist. Die Unterdruckanzeigemittel sind am Saugeinsatz angebracht, wobei das Anzeigeelement seitlich ausserhalb der Verdichtungstrommel angeordnet ist.The compacting device may include a rotatable compacting drum having a preferably annular cavity and a peripheral surface forming the compacting surface and provided with apertures. The suction device comprises a suction insert with suction opening, which is introduced into the cavity of the compression drum and stored therein stationary. The vacuum indicating means are mounted on the suction insert, wherein the display element is arranged laterally outside the compression drum.
Gemäss einer alternativen Ausführung enthält die Verdichtungseinrichtung ein umlaufendes, perforiertes Verdichtungsriemchen, dessen Umfangfläche die Verdichtungsfläche ausbildet. Die Saugeinrichtung umfasst einen stationär gelagerten Saugeinsatz mit Saugöffnung, über welche das Verdichtungsriemchen geführt ist. Die Unterdruckanzeigemittel sind am Saugeinsatz angebracht, wobei das Anzeigeelement seitlich ausserhalb des Umlaufbereichs des Verdichtungsriemchens angeordnet ist.According to an alternative embodiment, the compression device comprises a circumferential, perforated Verdichtungsriemchen whose peripheral surface forms the compression surface. The suction device comprises a stationary mounted suction insert with suction opening, over which the Verdichtungsriemchen is guided. The vacuum indicating means are mounted on the suction insert, wherein the display element is arranged laterally outside the circulation area of the compacting belt.
Die Unterdruckanzeigemittel sind bevorzugt in einem vorderen Endabschnitt des Saugeinsatzes, in Fliessrichtung des Faserverbandes betrachtet, angebracht.The negative pressure indicating means are preferably arranged in a front end section of the suction insert, viewed in the direction of flow of the fiber structure.
Die Erfindung betrifft im weiteren auch eine Saugeinrichtung für eine pneumatische Verdichtungseinrichtung einer Spinnmaschine. Die Erfindung zeichnet sich, dadurch aus, dass die Saugeinrichtung Unterdruckanzeigemittel zur optischen Anzeige eines an der betreffenden Spinnstelle abfallenden Unterdruck bzw. Saugzuges und dadurch verminderten Verdichtungssaugleistung enthält, wobei die Unterdruckanzeigemittel ein Anzeigeelement und auf das Anzeigeelement wirkende Rückstellmittel enthalten, wobei der Unterdruck auf das Anzeigeelement eine Kraft ausübt, und die Rückstellmittel eine, dem Unterdruck entgegen gerichtete Kraft auf das Anzeigeelement ausüben, und der Unterdruck und die Rückstellmittel derart miteinander zusammenwirken, dass bei Abnahme des Unterdrucks bzw. des Saugzuges oder bei Unterschreitung eines Schwellenwertes für den Unterdruck bzw. Saugzug, das Anzeigeelement aufgrund der Rückstellkraft der Rückstellmittel seine Position und/oder Form ändert.The invention further relates to a suction device for a pneumatic compression device of a spinning machine. The invention is characterized in that the suction device comprises negative pressure indicating means for optically displaying a negative pressure or induced draft at the respective spinning station and thereby reduced suction power, the negative pressure indicating means including a display element and return means acting on the display element, the negative pressure acting on the display element exerts a force, and the restoring means exert a, the negative pressure opposing force on the display element, and the negative pressure and the return means cooperate with each other such that upon decrease of the negative pressure or the induced draft or falls below a threshold value for the vacuum or induced draft, the display element changes its position and / or shape due to the restoring force of the return means.
Ferner betrifft die Erfindung auch ein Unterdruckanzeigemittel für die Saugeinrichtung einer pneumatische Verdichtungseinrichtung einer Spinnmaschine zur optischen Anzeige eines an der betreffenden Spinnstelle abfallenden Unterdruck bzw. Saugzuges und dadurch verminderten Verdichtungssaugleistung enthält, wobei die Unterdruckanzeigemittel ein Anzeigeelement und auf das Anzeigeelement wirkende Rückstellmittel enthalten, welche dem Unterdruck bzw. dem Saugzug entgegenwirken, wobei der Unterdruck auf das Anzeigeelement eine Kraft ausübt, und die Rückstellmittel eine, dem Unterdruck entgegen gerichtete Kraft auf das Anzeigeelement ausüben, und der Unterdruck und die Rückstellmittel derart miteinander zusammenwirken, dass bei Abnahme des Unterdrucks bzw. des Saugzuges oder bei Unterschreitung eines Schwellenwertes für den Unterdruck bzw. Saugzug, das Anzeigeelement aufgrund der Rückstellkraft der Rückstellmittel seine Position und/oder Form ändert.Furthermore, the invention also relates to a negative pressure indicating means for the suction device of a pneumatic compression device of a spinning machine for optically displaying a falling at the spinning station vacuum or induced draft and thereby reduced Verdichtungssaugleistung, wherein the negative pressure indicating means comprise a display element and acting on the display element return means which the negative pressure counteract the suction, wherein the negative pressure on the display element exerts a force, and the return means exert a, the vacuum counteracting force on the display element, and the negative pressure and the return means cooperate with each other such that upon decrease of the negative pressure or the induced draft or falls below a threshold value for the negative pressure or induced draft, the display element due to the restoring force of the return means changes its position and / or shape.
Die Spinnmaschine kann eine Ringspinn-, Trichterspinn, Glockenspinn- oder Topfspinnmaschine sein.The spinning machine may be a ring spinning, funnel spinning, bell spinning or pot spinning machine.
Die Erfindung wird nun nachfolgend anhand von Zeichnungen näher erläutert. Es zeigen:
- Fig. 1a-b:
- eine perspektivische Ansicht eines Saugeinsatzes mit Unterdruckanzeigemit- tel;
- Fig. 2:
- eine Frontansicht zweier Verdichtungseinrichtungen an einer Spinnstelle;
- Fig. 3a-b:
- eine perspektivische Ansicht einer weiteren Ausführungsform von Unter- druckanzeigemitteln;
- Fig. 4a-b:
- eine perspektivische Ansicht einer weiteren Ausführungsform von Unter- druckanzeigemitteln;
- Fig. 5a-c:
- eine perspektivische Ansicht einer weiteren Ausführungsform von Unter- druckanzeigemitteln;
- Fig. 6a-b:
- eine perspektivische Ansicht einer weiteren Ausführungsform von Unter- druckanzeigemitteln;
- Fig. 7:
- eine Seitenansicht einer zur Ansichtsseite hin offenen Siebstrommel.
- Fig. 1a-b:
- a perspective view of a suction insert with Unterdruckanzeigemit- tel;
- Fig. 2:
- a front view of two compression devices at a spinning station;
- 3a-b:
- a perspective view of another embodiment of vacuum pressure indicating means;
- Fig. 4a-b:
- a perspective view of another embodiment of vacuum pressure indicating means;
- Fig. 5a-c:
- a perspective view of another embodiment of vacuum pressure indicating means;
- 6a-b:
- a perspective view of another embodiment of vacuum pressure indicating means;
- Fig. 7:
- a side view of a screen side open to the screen drum.
An einem, in Faserflussrichtung 17 liegenden Endabschnitt des Saugeinsatzes 1 sind Unterdruckanzeigemittel 10 mit einem seitlich angeordneten, zylinderförmigen Faltenbalg 5 angebracht. Der Faltenbalg ist über Verbindungsmittel 3, 4 mit dem Saugeinsatz 1 verbunden. Die Verbindungsmittel 3, 4 umfassen einen Aufsatz 3, welcher auf den Saugeinsatz 1 aufgebracht und über eine Schnappverbindung oder Klebverbindung mit diesem verbunden ist. Der Aufsatz 3 enthält eine Verbindungsschnittstelle 4, an welche der Faltenbalg 5 am Aufsatz 3 angebracht ist. Der Aufsatz 3 ist Teil der Unterdruckanzeigemittel 10. Die Verbindungsschnittstelle 4 weist einen Durchgang vom Saugeinsatz 1 zum Anzeigemittel 5 für die Saugluft 8 auf. Gemäss einer alternativen Lösung (nicht gezeigt) wird auf einen Aufsatz verzichtet, vielmehr sind der Aufsatz 3 und die Verbindungsschnittstelle 4 für die Unterdruckanzeigemittel 10 in den Saugeinsatz 1 integriert.At one, lying in the direction of
Die beiden vorgenannten Lösungen betreffend den separaten oder in den Saugeinsatz integrierten Aufsatz 3 bzw. Verbindungsschnittstelle 4 gelten auch für die nachfolgend beschriebenen Ausführungsformen gemäss den
Die
Dank dem auffälligen Volumenunterschied des Faltenbalges 5, welcher zwischen den Zuständen gemäss
Die
Der zu verdichtende Faserverband 29a, 29b wird in Faserflussrichtung 17 aus dem Streckwerk (nicht gezeigt) durch die von der Siebtrommel 26a, 26b und einer Streckwerks-Ausgangsoberwalze 25a, 25b gebildete Klemmlinie auf die Verdichtungsfläche 27a, 27b geführt. Der zu verdichtende Faserverband 29a, 29b wird auf die Verdichtungsfläche 27a, 27b geführt, pneumatisch verdichtet und verlässt die Verdichtungseinrichtung 21 über den durch die Drehsperrwalze 30a, 30b und der Siebtrommel 26a, 26b gebildeten Drehsperrspalt in Richtung eines Drallerzeugungsorganes (nicht gezeigt). Das Drallerzeugungsorgan bewirkt die Eindrehung des Faserbandes zu einem Garn. Dies geschieht bei Ringspinnmaschinen z. B. mittels eines Ring-Läufer-Systems, welches mit einer sich drehenden Spindel zusammenwirkt.The
Die Drehsperrwalzen 30a, 30b und Lieferwalzen 25a, 25b werden in bekannter Art und Weise von einem Führungsarm 22, 24 gehaltert, welcher die Oberwalzen 30a, 30b; 25a, 25b auf die darunter liegende Siebtrommel 26a, 26b drücken. Im weiteren ist jeder Spinnstelle ausgangs Drehsperrspalt in ebenfalls bekannter Weise ein Fadenabsaugrohr 31 a, 31b zugeordnet.The
Die Saugeinsätze 1 a, 1 b sind seitlich in die Siebtrommel 26a, 26b eingeschoben. Der Faltenbalg 5a, 5b ist seitlich am Saugeinsatz 1 a, 1 b in Richtung der seitlichen Siebtrommelöffnung angeordnet, so dass der Faltenbalg 5a im entfalteten Zustand seitlich der Siebtrommel 26a, 26b vorsteht. Der entfaltete Zustand des Faltenbalges 5a wird bei fehlender oder mangelhafter Saugleistung durch die Verdichtungseinrichtung 21 ausgelöst. Wie auf der
Die Anordnung gemäss
Die Ausführungsvariante gemäss den
In einer Weiterentwicklung der Ausführungsvariante nach
Die Ausführungsvariante gemäss den
Die Ausführungsvariante gemäss den
Die
Claims (13)
dadurch gekennzeichnet, dass
der Saugeinrichtung (9) Unterdruckanzeigemittel (10, 16, 49, 59, 79) zur optischen Anzeige eines an der betreffenden Spinnstelle ab- oder ausfallenden Unterdruckes bzw. Saugzuges (8, 18, 48, 58, 78) und dadurch verminderten Verdichtungssaugleistung zugeordnet sind, wobei die Unterdruckanzeigemittel (10, 16, 49, 59, 79) ein Anzeigeelement (5, 15, 46, 55, 75) und auf das Anzeigeelement wirkende Rückstellmittel enthalten, wobei der Unterdruck auf das Anzeigeelement (5, 15, 46, 55, 75) eine Kraft ausübt, und die Rückstellmittel eine, dem Unterdruck entgegen gerichtete Kraft auf das Anzeigeelement (5, 15, 46, 55, 75) ausüben, und der Unterdruck und die Rückstellmittel derart miteinander zusammenwirken, dass bei Abnahme des Unterdrucks bzw. des Saugzuges oder bei Unterschreitung eines Schwellenwertes für den Unterdruck bzw. Saugzug, das Anzeigeelement (5, 15, 46, 55, 75) aufgrund der Rückstellkraft der Rückstellmittel seine Position und/oder Form ändert.Spinning machine comprising a plurality of spinning stations, each having a drafting device, a pneumatic compression device (21) and a swirl generating device for at least one fiber strand (29a, 29b), wherein a plurality of such devices are arranged side by side in the spinning machine, and the compression device (21) an evacuated Compression surface (27a, 27b) for compressing the over the compression surface (27a, 27b) guided fiber structure (29a, 29b) and a suction device (9) through which the through the evacuated compression surface (27a, 27b) in the suction device (9) flowing suction air is discharged,
characterized in that
the suction device (9) are associated with negative pressure indicating means (10, 16, 49, 59, 79) for optically displaying a negative pressure or induced draft at the relevant spinning station (8, 18, 48, 58, 78) and thereby reduced compression suction power in that the negative pressure indicating means (10, 16, 49, 59, 79) comprise a display element (5, 15, 46, 55, 75) and return means acting on the display element, the negative pressure acting on the display element (5, 15, 46, 55 , 75) exerts a force, and the return means exert a negative pressure on the indicating element (5, 15, 46, 55, 75), and the negative pressure and the return means cooperate with each other such that upon decrease of the negative pressure or of the induced draft or falls below a threshold value for the negative pressure or induced draft, the display element (5, 15, 46, 55, 75) changes its position and / or shape due to the restoring force of the return means.
Priority Applications (2)
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EP20080015531 EP2161356B1 (en) | 2008-09-03 | 2008-09-03 | Spinning frame with a pneumatic condensing device |
CN200910168979A CN101666000A (en) | 2008-09-03 | 2009-09-03 | Spinning frame with a pneumatic condensing device |
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EP20080015531 EP2161356B1 (en) | 2008-09-03 | 2008-09-03 | Spinning frame with a pneumatic condensing device |
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CH714446A1 (en) * | 2017-12-15 | 2019-06-28 | Rieter Ag Maschf | Suction pipe for a compacting device of a spinning machine. |
CH719132A1 (en) * | 2021-11-10 | 2023-05-15 | Rieter Ag Maschf | Compression device on a spinning machine with a display element. |
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DE102019113796A1 (en) * | 2019-05-23 | 2020-11-26 | Saurer Spinning Solutions Gmbh & Co. Kg | Compaction device for a spinning machine, drafting system with the compaction device and method for operating the compaction device |
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CN100352982C (en) * | 2002-01-18 | 2007-12-05 | 里特机械公司 | Spinning machine |
CN2556217Y (en) * | 2002-04-02 | 2003-06-18 | 上海二纺机股份有限公司 | Close spinning device for spinning frame |
-
2008
- 2008-09-03 EP EP20080015531 patent/EP2161356B1/en not_active Expired - Fee Related
-
2009
- 2009-09-03 CN CN200910168979A patent/CN101666000A/en active Pending
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DE19637828A1 (en) | 1996-09-17 | 1998-03-19 | Rieter Ag Maschf | Roving drawing unit guide |
DE19819019A1 (en) | 1998-04-29 | 1999-11-04 | Rieter Ag Maschf | Spinning machine with sieve drum containing suction insert |
EP1006224A2 (en) * | 1998-12-04 | 2000-06-07 | Zinser Textilmaschinen GmbH | Method and device for manufacturing condensed yarn |
DE10022428A1 (en) * | 2000-05-09 | 2001-11-15 | Stahlecker Fritz | Spinning machine sliver condensing zones has a connecting channel to each suction slit from the common suction channel with a transparent branch control tube and a floating indicator to display sufficient/insufficient suction levels |
EP1352999A2 (en) * | 2002-04-08 | 2003-10-15 | Zinser Textilmaschinen GmbH | Device for the manufacture of condensed yarn |
DE10348225A1 (en) * | 2003-10-09 | 2005-05-04 | Stahlecker Gmbh Wilhelm | Spinning machine drafting station has air abstractor pump with belt drive in proximity to belt tension adjustment switch |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011050919A1 (en) | 2010-07-15 | 2012-01-19 | Maschinenfabrik Rieter Ag | Device for monitoring suction air flow of compression device on ring spinning machine, has air guide element whose partial segment is connected with counterweight, and display unit visually displaying withdrawn position of partial segment |
CH714446A1 (en) * | 2017-12-15 | 2019-06-28 | Rieter Ag Maschf | Suction pipe for a compacting device of a spinning machine. |
CH719132A1 (en) * | 2021-11-10 | 2023-05-15 | Rieter Ag Maschf | Compression device on a spinning machine with a display element. |
EP4180558A1 (en) * | 2021-11-10 | 2023-05-17 | Maschinenfabrik Rieter AG | Display device for a compaction device on a spinning machine |
Also Published As
Publication number | Publication date |
---|---|
CN101666000A (en) | 2010-03-10 |
EP2161356B1 (en) | 2012-10-31 |
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