EP0137070B1 - Device for cleaning or blowing out loom parts - Google Patents

Device for cleaning or blowing out loom parts Download PDF

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Publication number
EP0137070B1
EP0137070B1 EP83110111A EP83110111A EP0137070B1 EP 0137070 B1 EP0137070 B1 EP 0137070B1 EP 83110111 A EP83110111 A EP 83110111A EP 83110111 A EP83110111 A EP 83110111A EP 0137070 B1 EP0137070 B1 EP 0137070B1
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EP
European Patent Office
Prior art keywords
air
air outlet
circular member
slot
nozzle
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83110111A
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German (de)
French (fr)
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EP0137070A1 (en
Inventor
Andreas Dr. Schachenmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sulzer AG
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Gebrueder Sulzer AG
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Filing date
Publication date
Application filed by Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Priority to EP83110111A priority Critical patent/EP0137070B1/en
Priority to DE8383110111T priority patent/DE3380966D1/en
Priority to US06/655,211 priority patent/US4566497A/en
Priority to JP59211200A priority patent/JPS6099045A/en
Publication of EP0137070A1 publication Critical patent/EP0137070A1/en
Application granted granted Critical
Publication of EP0137070B1 publication Critical patent/EP0137070B1/en
Expired legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03J—AUXILIARY WEAVING APPARATUS; WEAVERS' TOOLS; SHUTTLES
    • D03J1/00—Auxiliary apparatus combined with or associated with looms
    • D03J1/002—Climatic conditioning or removing lint or dust

Definitions

  • the invention relates to a device for cleaning or blowing out workplaces in a weaving machine, which device contains at least one line pressurized with compressed air, which leads to at least one slit-like air outlet which is arranged above the workplaces to be cleaned and periodically blows the air out over the workplaces .
  • a problem area in this regard is the area of yarn feed and weft insertion in looms. If flight accumulation is not prevented in this zone, the flight gets into the shed together with the weft thread and there leads to fabric contamination. This is particularly serious if the flight has already been contaminated with lubricating oil in the weft before it is carried by the weft. Flight entered into the tissue reduces the tissue quality to an undesirable extent.
  • FR-PS 65 058 (1st addition to 984 097) cleaning devices for spinning machines are shown and described. With these devices, the machines are periodically blown off zone by zone in the longitudinal direction. In one of these constructions, the blow-off is carried out by air jets directed straight downward, that is to say similarly to the JP patent right mentioned above. In another of the devices there, reciprocating air jets are used for cleaning, with which, as already described, it is not possible to remove the flight from the machine in one direction.
  • the object of the invention is to provide a structurally simple device which can be implemented with little effort and with which fiber fly can be transported away from the work stations to one side, for example from the weft mechanism against the direction of the thread.
  • This object is achieved according to the invention in that the air outlet has a continuously rotating round body which runs parallel to the air outlet which is stationary in the room and is arranged transversely to the thread running direction, and in that, over an angular range in the circumferential direction of the rotary body, a one-sided periodic deflection for the from a narrow slit-like Air outlet nozzle is provided.
  • the periodically one-sided deflected air jets "sweep" the fiber flight away to one side like a broom, whereas, in contrast to devices with stationary air jets, no dead spaces for flight accumulations can be formed.
  • the flight is transported away in a defined direction without any special purpose It is necessary to control the air supply, and a drive for a continuously rotating round body is simpler than a swivel mechanism.
  • the air outlet in which the air outlet does not contain any moving parts, can be directed rigidly towards one end of the work area to be cleaned and the round body can be arranged next to the outlet opening in the deflection direction to produce a Coanda effect.
  • the round body is, for example, a step body with at least one step; However, it can particularly advantageously consist of circular cylinder sectors with the same radii that are displaced with respect to one another along a diameter, expediently having two to four steps on the circumference of the step body.
  • the round body is arranged as a hollow cylinder with the slot-like blow-out nozzles distributed around the circumference in a fixed housing concentrically surrounding it, which closes off the pressure line and for the air jet extends over an angular range of its circumference, whereby the angular range of the blow-out nozzles is narrow relative to that of the air outlet in the fixed housing.
  • the "reversal" is also permissible, in which the round body as a hollow cylinder with narrow, slit-like blow-out nozzles distributed around the circumference concentrically and tightly surrounds a stationary housing that closes the pressure line and has an air outlet for the air jet that extends over an angular range of its circumference, whereby the angular range of the blow-out nozzles is narrow relative to that of the air outlet in the fixed housing.
  • the round body can be driven either by a motor or by the air to be deflected itself, the speed of the round body being controlled by an adjustable friction brake to limit the number of deflections per minute - advantageously 1-60, preferably up to 30, deflections / min can.
  • the air outlet of the device can be installed in a whole system of cleaning nozzles;
  • the above-mentioned system which is the subject of EP application 0 137 069, can be completed by a slit nozzle which is arranged downstream of the air outlet in the weft thread direction and which places a vertical air curtain between thread scissors and weft mechanism.
  • a cover plate delimits the air curtain on the weaving side on the thread inlet side of the thread scissors.
  • a further improvement can be achieved if an air blow-out nozzle is arranged in the weft thread running direction between the air outlet and the slot nozzle, the air jet of which is directed obliquely opposite the weft thread path from above onto the weft area.
  • a compressed air line ends at the air outlet 1 according to FIG. 1 in a housing which is closed at its free end by a rear wall, not shown; this creates a pressure chamber 2 in it.
  • This has a tangential, narrowing funnel-shaped outlet slot 3, which is formed by a side wall 4 of the housing and a molded body 5 in its interior.
  • a round body 6, which can rotate about its axis 7, is provided after the outlet slot 3 below the shaped body 5, an electric motor (not shown) being used for its drive, for example.
  • the axis 7 is laterally offset against the outlet slot 3 such that the curved surfaces of the round body 6, which in the example shown consist of two halves of a circular cylinder jacket separated and shifted along a diameter 8, protrude into the air stream emerging from the outlet slot 3 and this deflect on one side towards the round body 6.
  • part of the round body 5 is designed as a gear-like air turbine 10, which represents a self-drive for rotating the round body 6.
  • This self-propulsion would, however, leave itself too high speeds for the round body 6, which, as already mentioned, with a two-stage design a maximum of 30 rpm. may be; the self-propulsion is therefore braked by a friction brake 11 acting only schematically and acting on the axle 7. Since the braking force required to maintain a certain speed changes during operation - for example due to contamination in the fan "of the air drive " and / or in the bearing of the round body 6, this braking force is adjustable, which is not expressly shown.
  • the round body is a Drucklei device 12 connected hollow cylinder 13 which, driven by the shaft 17 by the air to be deflected or by an electric motor, can rotate. It has two diametrically opposed air outlet slots 14 and is seated in a likewise hollow cylindrical housing 15 which closes off the pressure line 12. In the circumference of the housing 15, an angular range 16 is excluded over the width of the slots 14, which, when the hollow cylinder 13 rotates, does the necessary one-sided deflection of the air jet for the "air broom" effect.
  • Fig. 4 is the inverse of Fig. 3; here is a rotating hollow cylinder 23, which in turn has slots 24, on the outside on a housing 25 which closes off the pressure line 22 and in which there is a recess 26 for the “sweeping area of the air brush”.
  • FIG. 5 shows a view of the weft insertion area of a weaving machine in the direction opposite to the weft thread run, i. H. seen from the machine, to an air supply, not shown, which expediently consists of a fan assigned to the individual machine and possibly driven by it - or by a separate electric motor - which draws in air from the weaving room and a compressed air distribution line, also not shown
  • an air supply not shown
  • a slot nozzle 30 which is transverse to the weft direction and an air blow nozzle 31 directed obliquely against the weft mechanism 34 are connected.
  • the two nozzles 30 and 31 are located at the end of a common distribution line 32; the slot nozzle 30 is arranged and directed so that it places a vertical air curtain between the thread scissors 33 and the weft mechanism 34.
  • the air flow emerging from the inclined air outlet nozzle 31 is directed primarily at the guides 43 of the projectile 42 and the thread transfer, while the air outlet 1, with its periodically deflected air jet, passes thread tensioner 44, thread brake 45 and weft spool 46.
  • the air curtain is bounded against the fabric 47 by a cover plate 48 which is open at the bottom; air of the air curtain deflected from the vertical enables the projectile lubrication, not shown, to be blown off. Blowing off the projectile lubrication can be further improved if the cover plate 48 is partially closed on the side. In the case of yarns which cause relatively little flight formation, it is also possible for the cover plate 48 to be closed or extended downward so that it forms a closed wall in which only the passage opening 50 for the projectile 42 is present. The shielding of the air curtain towards the shed 53 is improved with a cover plate 48 closed at the bottom.
  • cam plate 51 for controlling the thread scissors 3 and the centering wing 52 in front of this cam plate are shown under the cover plate 48.
  • the parts of the weft insertion mechanism which are moved in the direction of the shed 53 promote the tendency for the flying material (fluff) to move with a component in the direction of the weft thread run; on the other hand, the air curtain acts as a “lock”.
  • the cover plate 48 In cooperation with the cover plate 48, it shields the shed 53 and thus the fabric 47 against the flight generated in the weft mechanism 34.
  • the fibers entering the air curtain are guided downwards out of the machine.
  • the air discharge nozzle 31 and the air outlet 1 - supported by the air curtain - clean the weft mechanism 34 including thread tensioner 44 and thread brake 45, where a substantial part of the flight is created by thread transfer, thread transport and thread braking.
  • the “sweeping” air outlet 1 also has the effect that flight blown from the air discharge nozzle 31 into its area of action is removed from the machine.
  • the arrangement of a number of individual elements blowing in different directions ensures that there are no “dead corners” in the entire weft insertion area and that the flight is safely transported away from this area by the blowing air.
  • the speeds and energies of the “cleaning air jets” in the entire system must be selected so that on the one hand the flight material is transported as far as possible, but on the other hand the guidance and position of the thread are not impaired by the blown air.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
  • Looms (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Reinigen bzw. Ausblasen von Arbeitsstellen in einer Webmaschine, welche Vorrichtung mindestens eine mit Druckluft beaufschlagte Leitung enthält, die zu mindestens einem schlitzartigen Luftaustritt führt, der oberhalb der zu reinigenden Arbeitsstellen angeordnet ist und die Luft periodisch über die Arbeitsstellen ausbläst.The invention relates to a device for cleaning or blowing out workplaces in a weaving machine, which device contains at least one line pressurized with compressed air, which leads to at least one slit-like air outlet which is arranged above the workplaces to be cleaned and periodically blows the air out over the workplaces .

Bei der Garnverarbeitung entsteht je nach der Art des Garns mehr oder weniger starker Abrieb bzw. Flug. Besonders extrem zeigt sich dieses Problem an solchen Stellen, wo das Garn eine Scheuerbeanspruchung, beispielsweise eine Richtungsumlenkung, erfährt. Eine diesbezügliche Problemstelle ist bei Webmaschinen der Garnvorlage- und Schusseintragsbereich. Denn wird in dieser Zone die Flugansammlung nicht verhindert, so gelangt Flug zusammen mit dem Schussfaden in das Webfach und führt dort zu Gewebeverunreinigungen. Besonders gravierend ist dies, wenn der Flug vor seiner Mitnahme durch den Schussfaden im Schusswerk bereits durch Schmieröl verunreinigt worden ist. In das Gewebe eingetragene Flug vermindert die Gewebequalität in unerwünschtem Masse.Depending on the type of yarn, more or less strong abrasion or flight occurs during yarn processing. This problem is particularly extreme in those places where the yarn is subjected to abrasion, for example a change in direction. A problem area in this regard is the area of yarn feed and weft insertion in looms. If flight accumulation is not prevented in this zone, the flight gets into the shed together with the weft thread and there leads to fabric contamination. This is particularly serious if the flight has already been contaminated with lubricating oil in the weft before it is carried by the weft. Flight entered into the tissue reduces the tissue quality to an undesirable extent.

Zum Reinigen und Ausblasen von derartigen Arbeitsstellen sind daher eine Vielzahl von Vorschlägen bekannt, mit denen die kritischen Arbeitsstellen einer Webmaschine von Flug befreit oder freigehalten werden sollen. Es handelt sich bei diesen Vorrichtungen um Abblas- und/oder Absaugvorrichtungen, die entweder fest installiert sind oder über den Webmaschinen eines Saales hin- und -herwandern. In diesen Vorrichtungen werden dabei häufig die Webmaschine - im allgemeinen quer zu der Richtung der wandernden Vorrichtung - überstreichende Luftstrahlen verwendet, deren Bewegung durch Schwenkdüsen erzeugt wird.A large number of proposals are therefore known for cleaning and blowing out such workplaces, with which the critical workplaces of a weaving machine are to be freed from flight or kept free. These devices are blow-off and / or suction devices, which are either permanently installed or move back and forth over the weaving machines of a hall. In these devices, the loom - generally across the direction of the moving device - is swept by air jets, the movement of which is generated by swivel nozzles.

Mit diesen Schwenkdüsen ausgestattete Vorrichtungen, die über die Webmaschinen eines Saales hinwegwandern, sind beispielsweise aus der DE-PS 1535894, der DE-OS 19 19 229 oder aus der US-PS 2 798 825 bekannt. Diese Vorrichtungen bzw. Anlagen sind aufwendig. Weiterhin ist es mit ihnen wegen des Hin- und Herschwenkens der Schwenkdüse nicht möglich, den Flug nur in einer Richtung aus der Webmaschine wegzutransportieren. Dieses ist jedoch beispielsweise im Schusseintragsbereich einer Webmaschine erforderlich, wo der Fasernflug entgegen der Schussfadenrichtung aus dem Schusswerk heraustransportiert werden muss.Devices equipped with these swivel nozzles, which migrate over the weaving machines of a hall, are known, for example, from DE-PS 1535894, DE-OS 19 19 229 or from US-PS 2 798 825. These devices or systems are complex. Furthermore, because of the swiveling of the swivel nozzle back and forth, it is not possible to transport the flight away from the weaving machine in one direction only. However, this is necessary, for example, in the weft insertion area of a weaving machine, where the fiber fly has to be transported out of the weft mechanism in the opposite direction to the weft thread.

Weiterhin sind ortsfeste Blasvorrichtungen bekannt. Diese ortsfesten Vorrichtungen blasen nur einen örtlich eng begrenzten Bereich der Maschine ab (DE-AS 27 12 983), ohne dass dadurch der aus diesem Bereich weggeblasene Flug vollständig aus der Maschine entfernt wird. Andere fest installierte Vorrichtungen (JP-GM 4305/80) haben über dem Schusswerk eine Ausblasdüse und unterhalb desselben eine Absaugdüse. Bei dieser Konstruktion wird der von der Luftstrahlen erfasste Fasernflug nur im « Strahlenbereich » der Ausblasdüse erfasst und nach allen Seiten weggeblasen, so dass dieser sich mindestens zum Teil ebenfalls in Schussfadenlaufrichtung bewegt.Fixed blowing devices are also known. These fixed devices only blow off a locally narrowly restricted area of the machine (DE-AS 27 12 983) without the flight blown away from this area being completely removed from the machine. Other permanently installed devices (JP-GM 4305/80) have a blow-out nozzle above the firing mechanism and a suction nozzle below it. With this construction, the fiber flight detected by the air jets is only detected in the “jet area” of the blow-out nozzle and blown away on all sides, so that it also moves at least in part in the weft direction.

In der FR-PS 65 058 (1. Addition zu 984 097) sind Reinigungsvorrichtungen für Spinnmaschinen gezeigt und beschrieben. Durch diese Vorrichtungen werden die Maschinen in Längsrichtung zonenweise periodisch abgeblasen. Bei einer dieser Konstruktionen erfolgt das Abblasen durch gerade nach unten gerichtete Luftstrahlen, also ähnlich wie bei dem vorstehend erwähnten JP-Schutzrecht. Bei einer anderen der dortigen Vorrichtungen werden hin- und hergehende Luftstrahlen zur Reinigung benutzt, mit denen es - wie bereits geschildert - nicht möglich ist, den Flug in einer Richtung aus der Maschine zu entfernen.In FR-PS 65 058 (1st addition to 984 097) cleaning devices for spinning machines are shown and described. With these devices, the machines are periodically blown off zone by zone in the longitudinal direction. In one of these constructions, the blow-off is carried out by air jets directed straight downward, that is to say similarly to the JP patent right mentioned above. In another of the devices there, reciprocating air jets are used for cleaning, with which, as already described, it is not possible to remove the flight from the machine in one direction.

Aufgabe der Erfindung ist es, eine konstruktiv einfache und mit geringem Aufwand realisierbare Vorrichtung zu schaffen, mit der Fasernflug von den Arbeitsstellen nach einer Seite, beispielsweise aus dem Schusswerk gegen die Fadenlaufrichtung, wegtransportiert werden kann. Diese Aufgabe wird erfindungsgemäss dadurch gelöst, dass der Luftaustritt einen kontinuierlich rotierenden Rundkörper aufweist, der parallel zum im Raum feststehenden, quer zur Fadenlaufrichtung angeordneten Luftaustritt verläuft, und dass ferner über einen Winkelbereich in Umfangsrichtung des Rotationskörpers eine einseitige periodische Auslenkung für den aus einer schmalen schlitzartigen Ausblasdüse austretenden Luftstrahl vorgesehen ist.The object of the invention is to provide a structurally simple device which can be implemented with little effort and with which fiber fly can be transported away from the work stations to one side, for example from the weft mechanism against the direction of the thread. This object is achieved according to the invention in that the air outlet has a continuously rotating round body which runs parallel to the air outlet which is stationary in the room and is arranged transversely to the thread running direction, and in that, over an angular range in the circumferential direction of the rotary body, a one-sided periodic deflection for the from a narrow slit-like Air outlet nozzle is provided.

Die periodisch einseitig ausgelenkten Luftstrahlen « kehren " den Fasernflug wie ein Besen nach einer Seite weg, wobei sich im Gegensatz zu Vorrichtungen mit stationären Luftstrahlen keine Toträume für Flugansammlungen bilden können. Gegenüber Schwenkdüsen wird der Flug in einer definierten Richtung wegtransportiert, ohne dass dafür eine besondere Steuerung der Luftzufuhr notwendig ist. Weiterhin ist ein Antrieb für einen ständig rotierenden Rundkörper einfacher als ein Schwenkmechanismus.The periodically one-sided deflected air jets "sweep" the fiber flight away to one side like a broom, whereas, in contrast to devices with stationary air jets, no dead spaces for flight accumulations can be formed. Compared to swivel nozzles, the flight is transported away in a defined direction without any special purpose It is necessary to control the air supply, and a drive for a continuously rotating round body is simpler than a swivel mechanism.

Bei einer besonders einfachen und betriebssicheren Konstruktion, bei der der Luftaustritt keine bewegten Teile enthält, kann der Luftaustritt starr gegen ein Ende der zu reinigende Arbeitsstelle gerichtet und der Rundkörper zur Erzeugung eines Coanda-Effektes neben der Austrittsöffnung in die Auslenkrichtung versetzt angeordnet sein. Der Rundkörper ist dabei beispielsweise ein Stufenkörper mit mindestens einer Stufe ; er kann jedoch besonders vorteilhaft aus längs eines Durchmessers gegeneinander verschobenen Kreiszylindersektoren mit gleichen Radien bestehen, wobei zweckmässigerweise zwei bis vier Stufen auf dem Umfang des Stufenkörpers vorhanden sind.In a particularly simple and reliable construction, in which the air outlet does not contain any moving parts, the air outlet can be directed rigidly towards one end of the work area to be cleaned and the round body can be arranged next to the outlet opening in the deflection direction to produce a Coanda effect. The round body is, for example, a step body with at least one step; However, it can particularly advantageously consist of circular cylinder sectors with the same radii that are displaced with respect to one another along a diameter, expediently having two to four steps on the circumference of the step body.

Weitere vorteilhafte Möglichkeiten für den Aufbau der neuen Vorrichtung sind gegeben, wenn der Rundkörper als Hohlzylinder mit den auf dem Umfang verteilten schlitzartigen Ausblasdüsen in einem feststehenden, ihn konzentrisch umgebenden Gehäuse angeordnet ist, das die Druckleitung abschliesst und für den Luftstrahl einen, sich über einen Winkelbereich seines Umfanges erstreckenden, wobei der Winkelbereich der Ausblasdüsen relativ zu demjenigen des Luftaustritts im feststehenden Gehäuse schmal ist. Selbstverständlich ist auch die « Umkehrung » zulässig, bei der der Rundkörper als Hohlzylinder mit auf dem Umfang verteilten schmalen schlitzartigen Ausblasdüsen ein feststehendes Gehäuse konzentrisch eng umgibt, das die Druckleitung abschliesst und für den Luftstrahl einen sich über einen Winkelbereich seines Umfangs erstreckenden Luftaustritt hat, wobei der Winkelbereich der Ausblasdüsen relativ zu demjenigen des Luftaustritts im feststehenden Gehäuse schmal ist.Further advantageous options for the up Construction of the new device is given if the round body is arranged as a hollow cylinder with the slot-like blow-out nozzles distributed around the circumference in a fixed housing concentrically surrounding it, which closes off the pressure line and for the air jet extends over an angular range of its circumference, whereby the angular range of the blow-out nozzles is narrow relative to that of the air outlet in the fixed housing. Of course, the "reversal" is also permissible, in which the round body as a hollow cylinder with narrow, slit-like blow-out nozzles distributed around the circumference concentrically and tightly surrounds a stationary housing that closes the pressure line and has an air outlet for the air jet that extends over an angular range of its circumference, whereby the angular range of the blow-out nozzles is narrow relative to that of the air outlet in the fixed housing.

Der Antrieb des Rundkörpers kann entweder durch einen Motor oder durch die abzulenkende Luft selbst erfolgen, wobei zur Begrenzung der Anzahl Ablenkungen pro min - vorteilhaft erfolgen 1-60, vorzugsweise bis 30, Ablenkungen/min - die Drehzahl des Rundkörpers durch eine einstellbare Reibungsbremse beherrscht werden kann.The round body can be driven either by a motor or by the air to be deflected itself, the speed of the round body being controlled by an adjustable friction brake to limit the number of deflections per minute - advantageously 1-60, preferably up to 30, deflections / min can.

Bei einer Webmaschine, die mit einer solchen Vorrichtung versehen ist, kann diese vorteilhaft für die Reinigung eines Teils des Schusseintragbereiches dienen, wobei der Luftaustritt der Vorrichtung in ein ganzes System von Reinigungsdüsen installiert sein kann ; insbesondere ist es zweckmässig, den Luftaustritt im Bereich von Fadenspanner und Fadenbremse anzuordnen oder aus diesem heraus in Richtung auf die Fadenübergabezone hin zu verschieben. Das erwähnte System, das Gegenstand der EP-Anmeldung 0 137 069 ist, kann dabei vervollständigt sein durch eine in Schussfadenlaufrichtung dem Luftaustritt nachgeordnete quer zur Schussfadenrichtung verlaufende Schlitzdüse, die einen vertikalen Luftvorhang zwischen Fadenschere und Schusswerk legt. Im Zusammenhang mit dem Luftvorhang ist es weiterhin vorteilhaft, wenn fadeneinlaufseitig der Fadenschere eine Abdeckplatte den Luftvorhang webladenseitig begrenzt. Eine weitere Vervollkommnung lässt sich erreichen, wenn in Schussfadenlaufrichtung zwischen dem Luftaustritt und der Schlitzdüse eine Luftausblasdüse angeordnet ist, deren dem Schussfadenlauf schräg entgegengerichteter Luftstrahl von oben auf den Schusswerkbereich gerichtet ist.In the case of a weaving machine which is provided with such a device, it can advantageously be used for cleaning a part of the weft insertion area, wherein the air outlet of the device can be installed in a whole system of cleaning nozzles; In particular, it is expedient to arrange the air outlet in the area of the thread tensioner and thread brake or to move it out of it in the direction of the thread transfer zone. The above-mentioned system, which is the subject of EP application 0 137 069, can be completed by a slit nozzle which is arranged downstream of the air outlet in the weft thread direction and which places a vertical air curtain between thread scissors and weft mechanism. In connection with the air curtain, it is also advantageous if a cover plate delimits the air curtain on the weaving side on the thread inlet side of the thread scissors. A further improvement can be achieved if an air blow-out nozzle is arranged in the weft thread running direction between the air outlet and the slot nozzle, the air jet of which is directed obliquely opposite the weft thread path from above onto the weft area.

Im folgenden wird die Erfindung anhand von Ausführungsbeispielen im Zusammenhang mit der Zeichnung näher erläutert.

  • Fig. 1 zeigt schematisch in räumlicher Darstellung und in einem Schnitt senkrecht zum Austrittsschlitz eine erste Ausführungsform eines erfindungsgemäss gestalteten Luftaustritts zur einseitigen Ablenkung des Luftstrahles ;
  • Fig. 2 ist in ähnlicher Darstellung, jedoch noch stärker schematisiert, eine zweite Ausführungsform des Luftaustrittes ;
  • Fig. 3 und 4 geben - ebenfalls in Schnitten senkrecht zum Austrittsschlitz - zwei weitere Varianten des Luftaustrittes wieder, während
  • Fig. 5 wiederum in räumlicher Darstellung eine Vorrichtung zur Reinigung des Schussfadeneintragsbereiches einer Webmaschine zeigt, bei der der neue Luftaustritt in ein mehrere Blasstellen aufweisendes System integriert ist.
The invention is explained in more detail below on the basis of exemplary embodiments in conjunction with the drawing.
  • Fig. 1 shows schematically in a spatial representation and in a section perpendicular to the outlet slot a first embodiment of an air outlet designed according to the invention for one-sided deflection of the air jet;
  • Fig. 2 is a similar representation, but even more schematic, a second embodiment of the air outlet;
  • 3 and 4 show - also in sections perpendicular to the outlet slot - two further variants of the air outlet again during
  • 5 again shows in a spatial representation a device for cleaning the weft insertion area of a weaving machine, in which the new air outlet is integrated in a system having several blowing points.

Eine nicht dargestellte Druckluftleitung endet bei dem Luftaustritt 1 nach Fig. 1 in einem Gehäuse, das an seinem freien Ende durch eine nicht gezeigte Rückwand verschlossen ist ; dadurch wird in ihm ein Druckraum 2 gebildet. Dieser weist einen tangentialen, sich trichterförmig verengenden Austrittsschlitz 3 auf, der durch eine Seitenwand 4 des Gehäuses und einen Formkörper 5 in seinem Inneren gebildet ist.A compressed air line, not shown, ends at the air outlet 1 according to FIG. 1 in a housing which is closed at its free end by a rear wall, not shown; this creates a pressure chamber 2 in it. This has a tangential, narrowing funnel-shaped outlet slot 3, which is formed by a side wall 4 of the housing and a molded body 5 in its interior.

In Richtung der Luftströmung ist nach dem Austrittsschlitz 3 unterhalb des Formkörpers 5 ein Rundkörper 6 vorgesehen, der um seine Achse 7 rotieren kann, wobei für seinen Antrieb beispielsweise ein nicht gezeigter Elektromotor dient.In the direction of the air flow, a round body 6, which can rotate about its axis 7, is provided after the outlet slot 3 below the shaped body 5, an electric motor (not shown) being used for its drive, for example.

Die Achse 7 ist gegen den Austrittsschlitz 3 seitlich so versetzt, dass die gekrümmten Flächen des Rundkörpers 6, die im gezeigten Beispiel aus zwei längs eines Durchmessers 8 getrennten und gegeneinander verschobenen Hälften eines Kreiszylindermantels bestehen, in den aus dem Austrittsschlitz 3 austretenden Luftstrom hineinragen und diesen einseitig in Richtung auf den Rundkörper 6 ablenken.The axis 7 is laterally offset against the outlet slot 3 such that the curved surfaces of the round body 6, which in the example shown consist of two halves of a circular cylinder jacket separated and shifted along a diameter 8, protrude into the air stream emerging from the outlet slot 3 and this deflect on one side towards the round body 6.

Die durch das Versetzen der Zylinderhälften erzeugten Stufen 9 des Rundkörpers 6 bewirken, dass die an der gekrümmten Fläche anliegende Strömung nach einer halben Drehung des Rundkörpers 6 abreisst, wodurch die Ablenkung des Luftstrahls aufgehoben wird und die Luftströmung in die Richtung des Austrittsschlitzes 3 « zurückspringt ". Erfolgt eine gleichmässige und kontinuierliche Rotation des Rundkörpers 6, der einseitig teilweise von einer der Wand 4 gegenüberliegenden Wand 18 des Gehäuses umfasst wird, so erzeugt man auf diese Weise einen periodisch einseitig ausgelenkten Luftstrahl, der als « Luftbesen " die Arbeitsstellen der Webmaschine nach einer Seite hin « abkehrt ".The steps 9 of the round body 6 produced by the displacement of the cylinder halves cause the flow lying against the curved surface to break off after half a turn of the round body 6, as a result of which the deflection of the air jet is canceled and the air flow “springs back ” in the direction of the outlet slot 3 If there is a uniform and continuous rotation of the round body 6, which is partially encompassed on one side by a wall 18 of the housing opposite the wall 4, a periodically one-sided deflected air jet is generated in this way, which, as an "air broom ", moves the workplaces of the weaving machine after a "Turns away " .

Bei der Ausführungsform nach Fig. 2 ist ein Teil des Rundkörpers 5 als zahnradähnliche Luftturbine 10 ausgebildet, die einen Selbstantrieb für die Rotation des Rundkörpers 6 darstellt. Dieser Selbstantrieb ergäbe jedoch, sich selbst überlassen, zu hohe Drehzahlen für den Rundkörper 6, die, wie bereits erwähnt, bei zweistufiger Ausführung maximal 30 U/min. betragen dürfen ; der Selbstantrieb wird daher durch eine nur schematisch angedeutete, auf die Achse 7 wirkende Reibungsbremse 11 gebremst. Da sich im Laufe des Betriebes - beispielsweise durch Verschmutzungen im Ventilator « des Luftantriebes " und/oder in der Lagerung des Rundkörpers 6 - die zur Aufrechterhaltung einer bestimmten Drehzahl notwendige Bremskraft ändert, ist diese Bremskraft einstellbar, was nicht ausdrücklich dargestellt ist.In the embodiment according to FIG. 2, part of the round body 5 is designed as a gear-like air turbine 10, which represents a self-drive for rotating the round body 6. This self-propulsion would, however, leave itself too high speeds for the round body 6, which, as already mentioned, with a two-stage design a maximum of 30 rpm. may be; the self-propulsion is therefore braked by a friction brake 11 acting only schematically and acting on the axle 7. Since the braking force required to maintain a certain speed changes during operation - for example due to contamination in the fan "of the air drive " and / or in the bearing of the round body 6, this braking force is adjustable, which is not expressly shown.

In Fig. 3 ist der Rundkörper ein an eine Druckleitung 12 angeschlossener Hohlzylinder 13, der, über die Welle 17 durch die abzulenkende Luft oder durch einen Elektromotor angetrieben, rotieren kann. Er hat zwei sich diametral gegenüberliegende Luftaustrittsschlitze 14 und sitzt in einem ebenfalls hohlzylinderischen, die Druckleitung 12 abschliessenden Gehäuse 15. Im Umfang des Gehäuses 15 ist über die Breite der Schlitze 14 ein Winkelbereich 16 ausgenommen, der bei rotierendem Hohlzylinder 13 die erforderliche einseitige Ablenkung des Luftstrahles für die « Luftbesen »-Wirkung bewirkt.In Fig. 3 the round body is a Drucklei device 12 connected hollow cylinder 13 which, driven by the shaft 17 by the air to be deflected or by an electric motor, can rotate. It has two diametrically opposed air outlet slots 14 and is seated in a likewise hollow cylindrical housing 15 which closes off the pressure line 12. In the circumference of the housing 15, an angular range 16 is excluded over the width of the slots 14, which, when the hollow cylinder 13 rotates, does the necessary one-sided deflection of the air jet for the "air broom" effect.

Fig. 4 ist die Umkehrung von Fig. 3 ; hier sitzt ein rotierender Hohlzylinder 23, der wiederum Schlitze 24 hat, aussen auf einem die Druckleitung 22 abschliessenden Gehäuse 25, in dem eine Ausnehmung 26 für den « Kehrbereich des Luftbesens " vorhanden ist.Fig. 4 is the inverse of Fig. 3; here is a rotating hollow cylinder 23, which in turn has slots 24, on the outside on a housing 25 which closes off the pressure line 22 and in which there is a recess 26 for the “sweeping area of the air brush”.

Fig. 5 stellt einen Blick auf den Schusseintragsbereich einer Webmaschine in Richtung entgegen dem Schussfadenlauf, d. h. von der Maschine her gesehen, dar. An eine nicht dargestellte Luftversorgung, die zweckmässigerweise aus einem der einzelnen Maschine zugeordneten und gegebenenfalls von ihr - oder durch einen separaten Elektromotor - angetriebenen, Luft des Websaales ansaugenden Ventilators und aus einer ebenfalls nicht gezeigten Druckluftverteilleitung besteht, sind neben dem Luftaustritt 1 nach Fig. 1 eine quer zur Schussfadenrichtung stehende Schlitzdüse 30 und eine schräg gegen das Schusswerk 34 gerichtete Luftausblasdüse 31 angeschlossen. Die beiden Düsen 30 und 31 sitzen am Ende einer gemeinsamen Verteilleitung 32 ; die Schlitzdüse 30 ist so angeordnet und gerichtet, dass sie einen vertikalen Luftvorhang zwischen die Fadenschere 33 und das Schusswerk 34 legt.5 shows a view of the weft insertion area of a weaving machine in the direction opposite to the weft thread run, i. H. seen from the machine, to an air supply, not shown, which expediently consists of a fan assigned to the individual machine and possibly driven by it - or by a separate electric motor - which draws in air from the weaving room and a compressed air distribution line, also not shown In addition to the air outlet 1 according to FIG. 1, a slot nozzle 30 which is transverse to the weft direction and an air blow nozzle 31 directed obliquely against the weft mechanism 34 are connected. The two nozzles 30 and 31 are located at the end of a common distribution line 32; the slot nozzle 30 is arranged and directed so that it places a vertical air curtain between the thread scissors 33 and the weft mechanism 34.

Dieses ist nur schematisch und teilweise wiedergegeben : So sind im Vordergrund der vorderen und der hinteren Schlossklotz 35 bzw. 38 und der Rückholeröffner 36 mit einem Antriebshebel 37 skizziert, während hinter dem strichpunktiert angedeuteten Schussfaden 39 der Rückholerhebei 40, der Rückholer oder Fadengeber 41, ein Projektil 42 und Führungen 43 für das nicht sichtbare Schlagwerk und den Rückholer 41, sowie das Projektil 42 erkennbar sind. Unterhalb des Luftaustrittes 1 sind darüberhinaus Fadenspanner 44, Fadenbremse 45 und Schussfadenspule 46 dargestellt.This is only shown schematically and partially: For example, in the foreground the front and rear lock blocks 35 and 38 and the return opening mechanism 36 are sketched with a drive lever 37, while behind the weft thread 39 indicated by dash-dotted lines, the return mechanism 40, the return mechanism or thread take-up device 41, is one Projectile 42 and guides 43 for the invisible striking mechanism and the retractor 41, as well as the projectile 42 are recognizable. Below the air outlet 1, thread tensioner 44, thread brake 45 and weft thread spool 46 are also shown.

Der aus der schräggestellten Luftausblasdüse 31 austretende Luftstrom ist vor allem auf die Führungen 43 des Projektils 42 und die Fadenübergabe gerichtet, während der Luftaustritt 1 mit seinem periodisch abgelenkten Luftstrahl Fadenspanner 44, Fadenbremse 45 und Schussspule 46 überreicht.The air flow emerging from the inclined air outlet nozzle 31 is directed primarily at the guides 43 of the projectile 42 and the thread transfer, while the air outlet 1, with its periodically deflected air jet, passes thread tensioner 44, thread brake 45 and weft spool 46.

Gegen das Gewebe 47 ist der Luftvorhang durch eine Abdeckplatte 48 begrenzt, die nach unten offen ist ; durch aus der Vertikalen abgelenkte Luft des Luftvorhanges wird ein Abblasen der nicht dargestellten Projektilschmierung ermöglicht. Das Abblasen der Projektilschmierung kann dabei noch verbessert werden, wenn die Abdeckplatte 48 seitlich teilweise geschlossen ist. Bei Garnen, die relativ wenig Flugbildung verursachen, ist es auch möglich, die Abdeckplatte 48 nach unten geschlossen bzw. verlängert auszuführen, so dass sie eine geschlossene Wand bildet, in der lediglich die Durchtrittsöffnung 50 für das Projektil 42 vorhanden ist. Mit einer unten geschlossenen Abdeckplatte 48 wird die Abschirmung des Luftvorhangs zum Webfach 53 hin verbessert.The air curtain is bounded against the fabric 47 by a cover plate 48 which is open at the bottom; air of the air curtain deflected from the vertical enables the projectile lubrication, not shown, to be blown off. Blowing off the projectile lubrication can be further improved if the cover plate 48 is partially closed on the side. In the case of yarns which cause relatively little flight formation, it is also possible for the cover plate 48 to be closed or extended downward so that it forms a closed wall in which only the passage opening 50 for the projectile 42 is present. The shielding of the air curtain towards the shed 53 is improved with a cover plate 48 closed at the bottom.

Unter der Abdeckplatte 48 sind die Kurvenplatte 51 zur Steuerung der Fadenschere 3 und vor dieser Kurvenplatte der Zentrierflügel 52 dargestellt.The cam plate 51 for controlling the thread scissors 3 and the centering wing 52 in front of this cam plate are shown under the cover plate 48.

Die in Richtung auf das Webfach 53 bewegten Teile des Schusseintragmechanismus fördern bei dem Flugmaterial (Flusen) die Tendenz, sich mit einer Komponente in Richtung des Schussfadenlaufs zu bewegen ; dagegen wirkt der Luftvorhang als « Sperre ». Er schirmt im Zusammenwirken mit der Abdeckplatte 48 das Webfach 53 und damit das Gewebe 47 gegen den im Schusswerk 34 erzeugten Flug ab. Die in den Luftvorhang gelangende Fasern werden dabei nach unten aus der Maschine weggeführt.The parts of the weft insertion mechanism which are moved in the direction of the shed 53 promote the tendency for the flying material (fluff) to move with a component in the direction of the weft thread run; on the other hand, the air curtain acts as a “lock”. In cooperation with the cover plate 48, it shields the shed 53 and thus the fabric 47 against the flight generated in the weft mechanism 34. The fibers entering the air curtain are guided downwards out of the machine.

Gleichzeitig reinigen die Luftaustragsdüse 31 und der Luftaustritt 1 - unterstützt von dem Luftvorhang - das Schusswerk 34 einschliesslich Fadenspanner 44 und Fadenbremse 45, wo durch Fadenübergabe, Fadentransport und Fadenabbremsung ein wesentlicher Teil des Fluges entsteht. Der « kehrende » Luftaustritt 1 bewirkt darüberhinaus, dass von der Luftaustragsdüse 31 in seinen Wirkungsbereich geblasener Flug aus der Maschine entfernt wird.At the same time, the air discharge nozzle 31 and the air outlet 1 - supported by the air curtain - clean the weft mechanism 34 including thread tensioner 44 and thread brake 45, where a substantial part of the flight is created by thread transfer, thread transport and thread braking. The “sweeping” air outlet 1 also has the effect that flight blown from the air discharge nozzle 31 into its area of action is removed from the machine.

Durch den Einbau geeigneter Ventile in die Druckleitung 32 ist es möglich, die Strömungen aus der Luftausblasdüse 31 und aus der Schlitzdüse 30 diskontinuierlich austreten zu lassen. Die dadurch entstehenden Luftimpulse fördern durch ihre Stosswirkung die Abblasung, wobei beispielsweise Pulsfrequenzen kleiner 60 pro min., vorzugsweise unter 30/min., eingehalten werden.By installing suitable valves in the pressure line 32, it is possible to allow the flows from the air outlet nozzle 31 and from the slot nozzle 30 to emerge discontinuously. The resulting air impulses promote the blow-off due to their impact, for example pulse frequencies below 60 per minute, preferably below 30 / min.

Durch die Anordnung einer Anzahl von in unterschiedlicher Richtungen blasenden Einzelelementen wird gewährleistet, dass im ganzen Schusseintragbereich keine « toten » Ecken entstehen, und dass der Flug durch die Blasluft sicher aus diesem Bereich wegtransportiert wird. Die Geschwindigkeiten bzw. Energien der « Reinigungs-Luftstrahlen » sind im ganzen System so zu wählen, dass einerseits das Flugmaterial möglichst weitgehend wegtransportiert, andererseits jedoch durch die Blasluft die Führung und Lage des Fadens nicht beeinträchtigt werden.The arrangement of a number of individual elements blowing in different directions ensures that there are no “dead corners” in the entire weft insertion area and that the flight is safely transported away from this area by the blowing air. The speeds and energies of the “cleaning air jets” in the entire system must be selected so that on the one hand the flight material is transported as far as possible, but on the other hand the guidance and position of the thread are not impaired by the blown air.

Claims (12)

1. Means for cleaning or blowing-out work stations of a loom, the means comprising at least one line which is supplied with compressed air and which extends to at least one slot-like air outlet disposed above the work stations to be cleaned and which ejects air periodically over the working stations, characterised in that the air outlet (1, 16, 26) has a continuously rotating circular member (6, 13, 23) which extends parallel to the physically stationary air outlet (1, 16, 26), the same being disposed transversely to the direction of yarn movement, and by way of an angular zone in the peripheral direction of the circular member (6, 13, 23) a one-sided periodic deflection of the air stream issuing from a narrow slot-like ejection nozzle (3, 14, 24) is provided.
2. Means according to claim 1, characterised in that the air outlet (1) extends fixedly towards one end of the working stations to be cleaned and the circular member (6) is staggered in the deflection direction adjacent the outlet orifice (3) to produce a Coanda effect.
3. Means according to claim 2, characterised in that the circular member (6) is a stepped member embodied by circular cylinder sectors which have the same radii as one another and which are staggered relatively to one another along a diameter (8).
4. Means according to claim 1, characterised in that the circular member (6) is driven automatically by the air to be deflected.
5. Means according to claim 4, characterised by an adjustable friction brake (11) which brakes the self-driven circular member (6).
6. Means according to claim 1, characterised in that the circular member (6) is disposed as a hollow cylinder (13), which has slot-like ejection nozzles (14) distributed over its periphery, in a stationary casing (15) which extends concentrically around the circular member (6), closes the pressure line (12) and is formed for the airstream with an air outlet (16) extending over an angular zone of its periphery, the angular zone of the ejection nozzles (14) being narrow relatively to the angular zone of the air outlet (16) in the stationary casing (15).
7. Means according to claim 1, characterised in that the circular member extends, as a hollow cylinder (23) having slot-like ejection nozzles (24) distributed over its periphery, concentrically and closely around a stationary casing (25) which closes the pressure line (22) and is formed for the airstream with an air outlet (26) extending over an angular zone of its periphery, the angular zone of the ejection nozzles (24) being narrow relatively to the angular zone of the air outlet (26) in the stationary casing (25).
8. Means according to claim 1, characterised in that the deflection frequency of the airstream acted on by the circular member (6, 13, 23) and issuing from the slot-like ejection nozzle (3, 14, 26) is from 1 to 60 per minute.
9. A loom having means according to any of the previous claims, characterised in that the means are effective to clean a part of the picking zone of the loom.
10. A loom according to claim 9, characterised in that a slot-like nozzle (30) which extends transversely of the weft yarn direction is disposed after the air outlet (1, 16, 26) of the means, as considered in the direction of weft yarn movement, and places a vertical air curtain between the yarn shears (33) and -the picking mechanism (34).
11. A loom according to claim 10, characterised in that a cover plate (48) bounds the air curtain on the sley side on the entry side of the yarn shears (33).
12. A loom according to claim 10 or 11, characterised in that an air ejection nozzle (31) is disposed between the air outlet (1, 16, 26) and the slot-like nozzle (30) as considered in the direction of weft yarn movement and the air stream which issues from the nozzle (31) and which is directed oppositely and inclinedly to the direction of weft yarn movement is directed downwardly on to the picking mechanism (34).
EP83110111A 1983-10-11 1983-10-11 Device for cleaning or blowing out loom parts Expired EP0137070B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP83110111A EP0137070B1 (en) 1983-10-11 1983-10-11 Device for cleaning or blowing out loom parts
DE8383110111T DE3380966D1 (en) 1983-10-11 1983-10-11 DEVICE FOR CLEANING OR BLOWING OUT WORKPLACES IN A WEAVING MACHINE.
US06/655,211 US4566497A (en) 1983-10-11 1984-09-27 Air discharge device for a weaving machine
JP59211200A JPS6099045A (en) 1983-10-11 1984-10-08 Air exhaust apparatus to loom

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83110111A EP0137070B1 (en) 1983-10-11 1983-10-11 Device for cleaning or blowing out loom parts

Publications (2)

Publication Number Publication Date
EP0137070A1 EP0137070A1 (en) 1985-04-17
EP0137070B1 true EP0137070B1 (en) 1989-12-13

Family

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Application Number Title Priority Date Filing Date
EP83110111A Expired EP0137070B1 (en) 1983-10-11 1983-10-11 Device for cleaning or blowing out loom parts

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US (1) US4566497A (en)
EP (1) EP0137070B1 (en)
JP (1) JPS6099045A (en)
DE (1) DE3380966D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1000903A4 (en) * 1987-09-02 1989-05-09 Picanol Nv Kanteninlagapparaat for looms.

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2400792A (en) * 1944-06-03 1946-05-21 Crompton & Knowles Loom Works Loom
US2798825A (en) * 1950-12-27 1957-07-09 American Mono Rail Company Method of removing lint from textile machines
FR65058E (en) * 1952-11-06 1956-01-26 Continentale D Applic Tech Advanced spinning plant
US3304570A (en) * 1964-05-14 1967-02-21 Parks Cramer Co Traveling cleaner for looms
GB1124341A (en) * 1965-05-18 1968-08-21 Carrier Engineering Co Ltd Improvements in or relating to textile machines
US3422481A (en) * 1966-08-23 1969-01-21 Parks Cramer Co Crane mounted loom cleaner with synchronized oscillation
US3400423A (en) * 1966-08-23 1968-09-10 Parks Cramer Co Air outlet suspension system for textile traveling cleaners
CH473926A (en) * 1967-03-17 1969-06-15 Luwa Ag Pneumatic cleaning device on a weaving machine
US3571840A (en) * 1968-07-11 1971-03-23 Eaton Yale & Towne Cleaning apparatus for looms
SU494463A1 (en) * 1974-01-17 1975-12-05 Московский Ордена Трудового Красного Знамени Текстильный Институт Weaving Machine
JPS554305Y2 (en) * 1976-10-21 1980-01-31
DE2712983C2 (en) * 1977-03-24 1979-01-11 Guenne Webmaschinenfabrik Gmbh & Co Kg, 4773 Moehnesee Cleaning device for a weaving machine
CH624438A5 (en) * 1977-11-07 1981-07-31 Sulzer Ag
NL7907050A (en) * 1979-09-21 1981-03-24 Rueti Te Strake Bv PNEUMATIC WEAVING MACHINE.

Also Published As

Publication number Publication date
US4566497A (en) 1986-01-28
EP0137070A1 (en) 1985-04-17
JPS6099045A (en) 1985-06-01
DE3380966D1 (en) 1990-01-18

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