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EP0341450B1 - Device for taking a fibre mat from a feeding duct - Google Patents

Device for taking a fibre mat from a feeding duct Download PDF

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Publication number
EP0341450B1
EP0341450B1 EP89106852A EP89106852A EP0341450B1 EP 0341450 B1 EP0341450 B1 EP 0341450B1 EP 89106852 A EP89106852 A EP 89106852A EP 89106852 A EP89106852 A EP 89106852A EP 0341450 B1 EP0341450 B1 EP 0341450B1
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EP
European Patent Office
Prior art keywords
displaceable
delivery means
delivery
roller
conveyor belt
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 - Lifetime
Application number
EP89106852A
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German (de)
French (fr)
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EP0341450A1 (en
Inventor
Paul Staeheli
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication of EP0341450A1 publication Critical patent/EP0341450A1/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G23/00—Feeding fibres to machines; Conveying fibres between machines
    • D01G23/02—Hoppers; Delivery shoots

Definitions

  • the invention relates to a device for discharging a fiber mat from a feed shaft, according to the preamble of the first claim.
  • carding machines and also cleaning machines are fed with fiber flakes by means of pneumatic conveying lines, which are separated from the transport air by means of a separator and are fed to a feed shaft which is generally located underneath.
  • the stored fiber flakes are then dosed from such a feed shaft, either fed to a feed apparatus, for example a dosing unit sold by the applicant under the name "Contimeter”, or also to a card.
  • the fiber flocks are discharged from the feed shaft by means of feed rollers and fed to a second, underlying feed shaft by means of an opening roller, from which they in turn are discharged by means of a pair of stationary discharge rollers and further by means of one of the two discharge rollers and another movable pressure roller, for example on a guide plate of a card Be led.
  • the pressure roller is either weight or spring-loaded, so that the fiber mat is solidified with a predetermined pressure by means of the resulting pressure.
  • the advantage of the invention can be seen mainly in the use as a feed shaft for loading a card, in which the fiber mat introduced into the card. their density in the cross-section sampled or. is measured. This is particularly the case when on the way of the fiber mat to the feed between the feed roller and the feed plate, the fiber mat is changed by shifting and by deflections in its internal structure.
  • Fig. 1 A cross section through a feed shaft according to the invention, with a connected card, shown semi-schematically.
  • Fig. 2 A detail of the feed shaft of Fig. 1, shown in section I-I (Fig. 1).
  • Fig. 3 The detail of Fig. 2, but with a further detail thereof in another Operating situation shown.
  • Fig. 4 Another detail of the feed shaft, shown in section II-II (Fig. 5) and enlarged.
  • Fig. 5 The detail of Fig. 4 shown in viewing direction III-III (Fig. 1).
  • Fig. 6 + 7 One variant of the feed shaft from Fig. 1.
  • Fig. 8 The feed shaft of Fig. 7 in the viewing direction IV and in section V-V shown.
  • a discharge head 3 and an exhaust air housing 4 are connected to a housing 2 of a feed shaft 1.
  • the exhaust air housing 4 is connected to an exhaust pipe 5.
  • an air separation shaft 6 is provided, from which a perforated plate 7 is adjacent, from the top downward, as viewed in FIG. 1, or in the direction of travel of the fiber flakes, below the separation head 3.
  • the air separation shaft 6 receives a fiber flake-air mixture, which was conveyed into the air separation shaft 6 via the separation head 3.
  • the fiber flakes remain in the air separation shaft, while the air through the perforated plate 7 in the exhaust air room 8 and from this through the exhaust air housing 4 into the exhaust pipe 5.
  • feed rollers 9 and a dissolving roller 10 are provided, which discharge the fiber flakes in the air separation shaft 6, respectively. further dissolve and dispense into a feed chute 11.
  • stationary discharge rollers are arranged for the discharge of the fiber flakes from the feed chute 11 so as to be rotatable about their axes of rotation.
  • These stationary discharge rollers 12 are driven by a drive 15, which is indicated by dash-dotted lines and comprises a drive chain 16, a drive wheel 17 and a tension compensation wheel 18.
  • the chain engages around the chain wheels 19 (FIG. 5) provided on the respective shaft of the discharge rollers in such a way that they rotate in the opposite direction of rotation.
  • a sprocket is mounted on the shaft of the corresponding discharge roller at one end of the discharge rollers 12 and 13, which are connected to one another by means of a chain 20, so that the sprocket 19 connects the corresponding stationary discharge roller 12 transmitted torque can be transmitted to the movable discharge roller 13 by means of this chain 20.
  • Both shafts of the stationary discharge rollers 12 have a sprocket 19.
  • the stationary discharge rollers 12 are each by means of a rotary bearing 21 and 22 in the housing 2, while the movable discharge roller 13 is supported at both ends with its shaft in pivoting brackets 23 and 24 (only 24 is visible in FIG. 4), which in turn is pivotable from the shaft for the pivoting process the right discharge roller 12 (seen with a view of FIG. 1) are included.
  • the shaft of this stationary roller is marked with 25.
  • the swivel tabs 23 and 24 are rigidly connected to one another by means of a bracket 26, which in turn is pivotally connected to a pressure cylinder 14 by means of a swivel axis 27.
  • the pressure cylinder itself is pivotally connected by means of a pivot axis 29 to a carrier 30 which is fixedly arranged on the housing 2 (see FIG. 4).
  • the stationary discharge rollers 12 have a fixed distance A, while the operating distance between the movable discharge roller 13 and the opposite stationary discharge roller 12 is marked B, and generally corresponds to the distance which is caused by the compression of the fiber mat as a result of the pressure cylinder 14 generated force arises.
  • This distance B is generally not rigid, but corresponds to the thickness of the fiber mat guided in between.
  • the pressure cylinder 14 can be acted upon on one side Pressure cylinder with a spring (not shown) for the retracting movement of the cylinder piston 31.
  • the pressure cylinder 14 is pressurized by means of a pressure line 32 and the pressure cylinder 14 is vented according to arrow 33 for the extension stroke. 1, the pressure line 32 is connected to an electrically controlled single-acting 4/2-way valve 34.
  • the 4/2-way valve in turn is connected pneumatically by means of a line 36, to a compressed air source 37 and electrically by means of a line 38 to a controller 39.
  • a pressure reducing valve 40 can be provided in the pressure line 32 in order to control the pressure for the pressure cylinder 14. Without this pressure reducing valve, the pressure in the pressure line 36 or in the compressed air source 37 must already be controlled, or the pressure cylinder 14 is selected in accordance with a given air pressure and a required force.
  • a further pressure line 41 leads to a single-acting pressure cylinder 42, which closes an air flap 43 that can be closed off the perforated plate 7 if no flakes are conveyed into the air separator shaft 6.
  • the pressure cylinder 42 is not connected to the air flap 43, since it must be pivotable in a predetermined range for operation.
  • the flap is connected to a counterweight 44. The function of the flap is described in the article mentioned at the beginning and is therefore not mentioned further.
  • Fig. 3 is the closed flap 43 and the piston rod of the pressure cylinder which is in contact therewith 42 shown.
  • the bordering of the card 46 by means of dash-dotted lines is intended to express that the feed shaft 1 can also be connected to other spinning machines which further process a fiber mat.
  • the known per se elements of the card 46 include a feed cylinder 47, driven by a drive 56, a Briseurwalze 48, driven by a drive 57, a spool with a revolving flat 50 and a doffer 51, a doffer 52, ei n nip roller pair 53, a Condenser 54 and a pair of scanning rollers 55, wherein, as can be seen in FIG. 1, elements 51, 52, 53 and 55 are driven by a common drive 58.
  • control 39 can be understood to mean the switch-on function of the card drives shown, which in turn can be part of a comprehensive card control not described here.
  • fiber flakes are passed through the separating head 3 into the air separation shaft 6 and from there conveyed into the feed shaft 11 by means of the feed roller 9 and the opening roller 10.
  • the stationary discharge rollers 12 compress the fiber flakes of the feed chute 11 according to the distance A to a fiber mat, which is conveyed between the movable discharge roller 13 and the opposite stationary discharge roller 12 by means of these stationary discharge rollers 12 and is thereby pressed into an even more compressed fiber mat.
  • This pressed fiber mat then passes onto the guide plate 45, and on this further into the card 46, ie to the feed roller 47.
  • valve 39 is simultaneously changed over by the controller 39 so that the pressure line 32 is vented and the pressure lines 41 are supplied with pressure.
  • the movable discharge roller 13 is moved back into the rest position in the pivoting direction W and on the other hand the pressure cylinder 42 closes the flap 43.
  • Air movements are understood to mean the air flow from the exhaust air space 8 into the exhaust air housing 4.
  • FIG. 6 shows a feed shaft 1.1, which is a variant of the feed shaft 1 of FIG. 1, in that a conveyor belt 59 comprises the movable discharge roller 13 and the associated stationary discharge roller 12, so that the fiber mat discharged from the two stationary discharge rollers 12 over the conveyor belt 59 is conveyed into the space with the distance B.
  • the bracket 26 is designed in such a way that it overlaps the conveyor belt, which is shown in FIG. 4 with the conveyor belt 59 shown in dash-dotted lines.
  • the drive chain 20 and the chain wheels (not shown) accommodating this chain can be dispensed with, since the movable discharge roller 13 can be driven by the stationary discharge roller 12 by means of a conveyor belt 59.
  • the possibility of leaving the chain 20 and the associated sprockets and relieving the conveyor belt 59 of the drive function is also possible.
  • FIG. 7 shows a feed shaft 1.2, which is a variant compared to the feed shaft 1 of FIG. 1 in that the feed shaft 11.1, viewed in the direction of FIG. 7, through a conveyor belt 60 and a conveyor belt 61 opposite thereto and is formed by two end walls 62 (only one end wall visible in FIG. 7) and shown in dashed lines in FIG. 7.
  • the conveyor belt 60 is stationary and the conveyor belt 61 is arranged to be pivotable about the axis 63.
  • the axis 63 is at the same time the axis for the upper deflection roller 64 (viewed in FIG. 7).
  • the lower deflection rollers of the conveyor belts 60 and 61 are driven in the same way as the stationary drive rollers 12, but with the difference that the tension compensation wheel 18 of the drive 15 must be able to move the pivotable conveyor belt 61 record.
  • the deflecting rollers of the conveyor belt 61 are connected to one another on their end faces by tabs 70 and 71 (FIG. 8), as is the case in FIGS. 5 shown as swivel tabs 23 and 24 tabs.
  • the connecting tabs 70 and 71 mentioned are connected to one another by a bracket 28, analogously to the bracket 26 of FIG. 4, so that the pressure cylinder 14.1 can be pivotally attached to it.
  • the pressure cylinder 14.1 is in turn pivotally attached to the housing 2 in the same way as the pressure cylinder 14 of FIG. 4 and connected to the pressure line 32.
  • Fig. 8 shows on the left side of the conveyor belt 60 and 61, as seen in Fig. 8, a sprocket 19.1, which corresponds to the sprocket 19 of Fig. 5, which is provided on both lower shafts of the conveyor belts 60 and 61, and on the right side a chain 20.1 which, together with the corresponding sprockets (not shown), drive the upper deflection roller if this is not done by the conveyor belt itself.
  • Fig. 8 only the stationary conveyor belt 60 is shown, it can be seen that the two free ends of the axis of the upper deflecting roller each in a bearing 65 fixed in the housing 2 and the shaft of the lower deflecting roller each in a bearing fixed in the housing 2 66 are rotatably mounted.
  • the axis of the upper deflection roller of the conveyor belt 61 with the two free ends is likewise rotatably mounted in bearings provided in the housing 2 in a manner analogous to the axis of the deflection roller of the conveyor belt 60, while the shaft of the lower deflection roller of the conveyor belt 61 in the aforementioned, tabs 70 and 71 is rotatably mounted.
  • FIG. 9 shows a further variant in that the right-hand stationary discharge roller 12 shown in FIG. 4 is omitted and the movable discharge roller 13 is pivotably mounted about the pivot axis 67.
  • the shaft 68 of the movable discharge roller 13 is rotatably mounted in a swivel plate 69, which in turn is pivotally connected to the pressure cylinder 14.2, which in turn is arranged pivotably on the housing 2.
  • the feeder shaft 11.1 is adapted in relation to the feeder shaft 11 in accordance with the swivel plate 69.
  • the invention is not limited to the combination with a card, but can also be combined with other spinning machines into which a fiber mat has to be fed.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Austragen einer Fasermatte aus einem Speiseschacht, gemäss Oberbegriff des ersten Anspruches.The invention relates to a device for discharging a fiber mat from a feed shaft, according to the preamble of the first claim.

Es ist bekannter Stand der Technik, dass Karden- und auch Reinigungsmaschinen mittels pneumatischer Förderleitungen mit Faserflocken beschickt werden, welche mittels eines Abscheiders von der Transportluft getrennt und einem sich in der Regel darunter befindlichen Speiseschacht zugeführt werden. Aus einem solchen Speiseschacht werden dann die gespeicherten Faserflocken dosiert, entweder einem Speiseapparat, z.B. einer vom Anmelder unter dem Namen "Contimeter" verkauften Dosiereinheit oder auch einer Karde zugeführt.It is known in the prior art that carding machines and also cleaning machines are fed with fiber flakes by means of pneumatic conveying lines, which are separated from the transport air by means of a separator and are fed to a feed shaft which is generally located underneath. The stored fiber flakes are then dosed from such a feed shaft, either fed to a feed apparatus, for example a dosing unit sold by the applicant under the name "Contimeter", or also to a card.

Ein solcher Speiseschacht ist bspw. in einem Fachartikel in der Zeitschrift "mittex" Ausgabe 2/86 mit dem Titel "Die neue Kardenspeisung Aerofeed-U" beschrieben. Daraus ist ersichtlich, dass die pneumatisch angeförderten Faserflocken mittels eines Ausscheidekopfes in einen Speiseschacht gefördert werden, in welchem diese von der Förderluft getrennt werden.Such a feed slot is described, for example, in a technical article in the magazine "mittex" issue 2/86 with the title "The new card feeding Aerofeed-U". From this it can be seen that the pneumatically conveyed fiber flakes are conveyed into a feed shaft by means of a separating head, in which they are separated from the conveying air.

Aus dem Speiseschacht werden die Faserflocken mittels Speisewalzen ausgetragen und mittels einer Auflösewalze einem zweiten, darunterliegenden Vorlageschacht zugeführt, aus welchem sie wiederum mittels eines stationär angeordneten Austragwalzenpaares ausgetragen und mittels einer der beiden Austragwalzen und einer weiteren, bewegbaren Anpresswalze weiter auf bspw. ein Leitblech einer Karde geführt Werden.The fiber flocks are discharged from the feed shaft by means of feed rollers and fed to a second, underlying feed shaft by means of an opening roller, from which they in turn are discharged by means of a pair of stationary discharge rollers and further by means of one of the two discharge rollers and another movable pressure roller, for example on a guide plate of a card Be led.

Dabei ist die Anpresswalze entweder gewichts- oder federbelastet, so dass die Fasermatte mit einem vorgegebenen Druck mittels der dadurch entstehenden Pressung verfestigt wird.The pressure roller is either weight or spring-loaded, so that the fiber mat is solidified with a predetermined pressure by means of the resulting pressure.

Der Nachteil besteht nun darin, dass bei einem auch nur temporären Stillstand der Austragung eine verdichtete Stelle in der Fasermatte infolge der Pressung zwischen der Anpresswalze und der Austragwalze entsteht, welche sich beim Weiterfördern bei weitem nicht mehr in gleicher Art wieder ausdehnt, wie eine laufend gepresste Fasermatte. Im Spinnjargon ausgedrückt "atmet" die Fasermatte an einer vorgenannt verdichteten Stelle nur unwesentlich "auf", im Gegensatz zum restlichen Teil der Fasermatte, welcher zwar mit demselben Druck verdichtet, jedoch kontinuierlich gefördert wurde.The disadvantage now is that, even if the discharge is only temporarily at a standstill, a densified point in the fiber mat arises as a result of the pressure between the pressure roller and the discharge roller, which does not expand by far in the same way as one that is being pressed continuously Fiber mat. Expressed in spinning jargon, the fiber mat "breathes" only slightly at a previously compacted point, in contrast to the rest of the fiber mat, which does compressed with the same pressure, but was continuously conveyed.

Diesem Nachteil abzuhelfen ist Aufgabe der Erfindung und wurde durch die im Kennzeichen des ersten Anspruches definierte Erfindung erreicht.To remedy this disadvantage is the object of the invention and was achieved by the invention defined in the characterizing part of the first claim.

Weitere vorteilhafte Ausführungsformen sind in den weiteren abhängigen Ansprüchen definiert.Further advantageous embodiments are defined in the further dependent claims.

Der Vorteil der Erfindung zeigt sich hauptsächlich in der Anwendung als Speiseschacht zur Beschickung einer Karde, bei welcher die in die Karde eingeführte Fasermatte bez. ihre Dichte im Querschnitt abgetastet resp. gemessen wird. Dies insbesondere dann, wenn auf dem Weg der Fasermatte bis zur Einspeisung zwischen die Speisewalze und die Speiseplatte, die die Fasermatte durch Verschieben und durch Umlenkungen in ihrer inneren Struktur verändert wird.The advantage of the invention can be seen mainly in the use as a feed shaft for loading a card, in which the fiber mat introduced into the card. their density in the cross-section sampled or. is measured. This is particularly the case when on the way of the fiber mat to the feed between the feed roller and the feed plate, the fiber mat is changed by shifting and by deflections in its internal structure.

Die Erfindung wird im folgenden anhand von Beispielen näher erläutert.The invention is explained in more detail below with the aid of examples.

Es zeigt:It shows:

Fig. 1: Einen Querschnitt durch einen erfindungsgemässen Speiseschacht, mit angeschlossener Karde, halbschematisch dargestellt.Fig. 1: A cross section through a feed shaft according to the invention, with a connected card, shown semi-schematically.

Fig. 2: Ein Detail des Speiseschachtes von Fig. 1, im Schnitt I-I (Fig. 1) dargestellt.Fig. 2: A detail of the feed shaft of Fig. 1, shown in section I-I (Fig. 1).

Fig. 3: Das Detail von Fig. 2, jedoch mit einem weiteren Detail davon in einer anderen Betriebslage dargestellt.Fig. 3: The detail of Fig. 2, but with a further detail thereof in another Operating situation shown.

Fig. 4: Ein weiteres Detail des Speiseschachtes, im Schnitt II-II (Fig. 5) und vergrössert dargestellt.Fig. 4: Another detail of the feed shaft, shown in section II-II (Fig. 5) and enlarged.

Fig. 5: Das Detail von Fig. 4 in Blickrichtung III-III (Fig. 1) dargestellt.Fig. 5: The detail of Fig. 4 shown in viewing direction III-III (Fig. 1).

Fig. 6 + 7: Je eine Variante des Speiseschachtes von Fig. 1.Fig. 6 + 7: One variant of the feed shaft from Fig. 1.

Fig. 8: Der Speiseschacht von Fig. 7 in Blickrichtung IV sowie im Schnitt V-V dargestellt.Fig. 8: The feed shaft of Fig. 7 in the viewing direction IV and in section V-V shown.

Fig. 9: Eine Variante des Details von Fig. 4.9: A variant of the detail from FIG. 4.

An ein Gehäuse 2 eines Speiseschachtes 1 ist ein Ausscheidekopf 3 und ein Abluftgehäuse 4 angeschlossen.A discharge head 3 and an exhaust air housing 4 are connected to a housing 2 of a feed shaft 1.

Das Abluftgehäuse 4 ist mit einem Abluftrohr 5 verbunden.The exhaust air housing 4 is connected to an exhaust pipe 5.

Im Gehäuse 2 ist von oben nach unten, mit Blickrichtung auf Fig. 1 gesehen, oder in Laufrichtung der Faserflocken gesehen unterhalb des Ausscheidekopfes 3 ein Luftabscheideschacht 6 vorgesehen, an welchem ein Lochblech 7 angrenzt.In the housing 2 an air separation shaft 6 is provided, from which a perforated plate 7 is adjacent, from the top downward, as viewed in FIG. 1, or in the direction of travel of the fiber flakes, below the separation head 3.

Der Luftabscheideschacht 6 nimmt ein Faserflocken-Luftgemisch auf, welches über den Ausscheidekopf 3 in den Luftabscheideschacht 6 gefördert wurde. Dabei bleiben die Faserflocken im Luftabscheideschacht, während die Luft durch das Lochblech 7 in den Abluft raum 8 und von diesem über das Abluftgehäuse 4 in das Abluftrohr 5 gelangt.The air separation shaft 6 receives a fiber flake-air mixture, which was conveyed into the air separation shaft 6 via the separation head 3. The fiber flakes remain in the air separation shaft, while the air through the perforated plate 7 in the exhaust air room 8 and from this through the exhaust air housing 4 into the exhaust pipe 5.

Anschliessend an den Luftabscheideschacht 6 sind Speisewalzen 9 und eine Auflösewalze 10 vorgesehen, welche die Faserflocken im Luftabscheideschacht 6 austragen resp. weiterauflösen und in einen Vorlageschacht 11 abgeben.Following the air separation shaft 6, feed rollers 9 and a dissolving roller 10 are provided, which discharge the fiber flakes in the air separation shaft 6, respectively. further dissolve and dispense into a feed chute 11.

Am unteren Ende mit Blickrichtung auf Fig. 1 gesehen, d.h. am Ausgang des Vorlageschachtes 11, in Vliesrichtung der Faserflocken gesehen, sind 2 stationäre Austragwalzen, für das Austragen der Faserflocken aus dem Vorlageschacht 11, um ihre Drehachsen rotierbar angeordnet. Dabei werden diese stationären Austragwalzen 12 durch einen Antrieb 15 angetrieben, welcher mit strichpunktierten Linien andeutungsweise gezeigt ist und eine Antriebskette 16, ein Antriebsrad 17 und ein Spannungsausgleichsrad 18 umfasst. Dabei umgreift die Kette, die auf der jeweiligen Welle der Austragwalzen vorgesehenen Kettenräder 19 (Fig. 5) derart, dass sie im entgegengesetzten Drehsinn drehen.Seen at the lower end looking towards Fig. 1, i.e. at the exit of the feed chute 11, seen in the nonwoven direction of the fiber flakes, 2 stationary discharge rollers are arranged for the discharge of the fiber flakes from the feed chute 11 so as to be rotatable about their axes of rotation. These stationary discharge rollers 12 are driven by a drive 15, which is indicated by dash-dotted lines and comprises a drive chain 16, a drive wheel 17 and a tension compensation wheel 18. The chain engages around the chain wheels 19 (FIG. 5) provided on the respective shaft of the discharge rollers in such a way that they rotate in the opposite direction of rotation.

Für den Antrieb einer weiteren, bewegbaren Austragwalze 13 ist je an einem Ende der Austragwalzen 12 und 13 ein Kettenrad auf der Welle der entsprechenden Austragwalze aufgezogen, welche mittels einer Kette 20 miteinander verbunden sind, sodass das mit dem Kettenrad 19 das auf die entsprechende stationäre Austragwalze 12 übertragene Drehmoment mittels dieser Kette 20 auf die bewegbare Austragwalze 13 übertragen werden kann. Beide Wellen der stationären Austragwalzen 12 weisen ein Kettenrad 19 auf.For driving a further, movable discharge roller 13, a sprocket is mounted on the shaft of the corresponding discharge roller at one end of the discharge rollers 12 and 13, which are connected to one another by means of a chain 20, so that the sprocket 19 connects the corresponding stationary discharge roller 12 transmitted torque can be transmitted to the movable discharge roller 13 by means of this chain 20. Both shafts of the stationary discharge rollers 12 have a sprocket 19.

Im weiteren sind die stationären Austragwalzen 12 je mittels einem Drehlager 21 und 22 im Gehäuse 2 stationär gelagert, während die bewegbare Austragwalze 13 an beiden Enden mit ihrer Welle in Schwenklaschen 23 und 24 (in Fig. 4 ist nur 24 sichtbar) gelagert ist, welche ihrerseits für den Schwenkvorgang schwenkbar von der Welle der rechten (mit Blick auf Fig. 1 gesehen) stationären Austragwalze 12 aufgenommen sind. Die Welle dieser stationären Walze ist mit 25 gekennzeichnet.Furthermore, the stationary discharge rollers 12 are each by means of a rotary bearing 21 and 22 in the housing 2, while the movable discharge roller 13 is supported at both ends with its shaft in pivoting brackets 23 and 24 (only 24 is visible in FIG. 4), which in turn is pivotable from the shaft for the pivoting process the right discharge roller 12 (seen with a view of FIG. 1) are included. The shaft of this stationary roller is marked with 25.

Die Schwenklaschen 23 und 24 sind mittels eines Bügels 26 starr miteinander verbunden, welcher seinerseits mittels einer Schwenkachse 27 schwenkbar mit einem Druckzylinder 14 verbunden ist. Der Druckzylinder selbst ist mittels einer Schwenkachse 29 mit einem Träger 30 schwenkbar verbunden, welcher am Gehäuse 2 festangeordnet ist (Siehe Fig. 4).The swivel tabs 23 and 24 are rigidly connected to one another by means of a bracket 26, which in turn is pivotally connected to a pressure cylinder 14 by means of a swivel axis 27. The pressure cylinder itself is pivotally connected by means of a pivot axis 29 to a carrier 30 which is fixedly arranged on the housing 2 (see FIG. 4).

Die stationären Austragwalzen 12 weisen einen festen Abstand A auf, während der Betriebsabstand zwischen der bewegbaren Austragwalze 13 und der gegenüberliegenden stationären Austragwalze 12 mit B gekennzeichnet ist, und in der Regel demjenigen Abstand entspricht, welcher durch das Zusammendrücken der Fasermatte infolge der durch den Druckzylinder 14 erzeugten Kraft entsteht. Dieser Abstand B ist in der Regel nicht starr, sondern entspricht der Dicke der dazwischengeführten Fasermatte.The stationary discharge rollers 12 have a fixed distance A, while the operating distance between the movable discharge roller 13 and the opposite stationary discharge roller 12 is marked B, and generally corresponds to the distance which is caused by the compression of the fiber mat as a result of the pressure cylinder 14 generated force arises. This distance B is generally not rigid, but corresponds to the thickness of the fiber mat guided in between.

Das Wegschwenken der bewegbaren Austragwalze 13 entsprechend dem Pfeil W in eine Ruheposition geschieht soweit, bis der Abstand B im wesentlichen dem Abstand A entspricht.The pivoting of the movable discharge roller 13 in accordance with the arrow W into a rest position occurs until the distance B essentially corresponds to the distance A.

Der Druckzylinder 14 ist ein einseitig beaufschlagbarer Druckzylinder mit einer Feder (nicht gezeigt) für die Einfahrbewegung des Zylinderkolbens 31. Mit Druck beaufschlagt wird der Druckzylinder 14 mittels einer Druckleitung 32 und für den Ausfahrhub wird der Druckzylinder 14 gemäss Pfeil 33 entlüftet. Wie aus Fig. 1 ersichtlich, ist die Druckleitung 32 an ein elektrisch gesteuertes einfach wirkendes 4/2-Wegventil 34 angeschlossen.The pressure cylinder 14 can be acted upon on one side Pressure cylinder with a spring (not shown) for the retracting movement of the cylinder piston 31. The pressure cylinder 14 is pressurized by means of a pressure line 32 and the pressure cylinder 14 is vented according to arrow 33 for the extension stroke. 1, the pressure line 32 is connected to an electrically controlled single-acting 4/2-way valve 34.

Das 4/2-Wegventil seinerseits ist pneumatisch mittels einer Leitung 36, mit einer Druckluftquelle 37 und elektrisch mittels einer Leitung 38 mit einer Steuerung 39 verbunden.The 4/2-way valve in turn is connected pneumatically by means of a line 36, to a compressed air source 37 and electrically by means of a line 38 to a controller 39.

In der Druckleitung 32 kann ein Druckreduzierventil 40 vorgesehen sein, um den Druck für den Druckzylinder 14 zu steuern. Ohne dieses Druckreduzierventil muss der Druck bereits in der Druckleitung 36 oder in der Druckluftquelle 37 gesteuert sein, oder der Druckzylinder 14 wird entspechend einem gegebenen Luftdruck und einer verlangten Kraft ausgewählt.A pressure reducing valve 40 can be provided in the pressure line 32 in order to control the pressure for the pressure cylinder 14. Without this pressure reducing valve, the pressure in the pressure line 36 or in the compressed air source 37 must already be controlled, or the pressure cylinder 14 is selected in accordance with a given air pressure and a required force.

Ebenfalls aus Fig. 1 ist ersichtlich, dass eine weitere Druckleitung 41 zu einem einfach wirkenden Druckzylinder 42 führt, welcher eine das Lochblech 7 abschliessbare Luftklappe 43 schliesst, falls keine Flocken in den Luftabscheiderschacht 6 gefördert werden. Der Druckzylinder 42 ist nicht mit der Luftklappe 43 verbunden, da diese für den Betrieb in einem vorgegebenen Bereich schwenkbar sein muss. Zu diesem Zweck ist die Klappe mit einem Gegengewicht 44 verbunden. Die Funktion der Klappe ist im eingangs erwähnten Aufsatz beschrieben und deshalb nicht weiter erwähnt. In Fig. 3 ist die geschlossene Klappe 43 und die damit anliegende Kolbenstange des Druckzylinders 42 gezeigt.1 that a further pressure line 41 leads to a single-acting pressure cylinder 42, which closes an air flap 43 that can be closed off the perforated plate 7 if no flakes are conveyed into the air separator shaft 6. The pressure cylinder 42 is not connected to the air flap 43, since it must be pivotable in a predetermined range for operation. For this purpose, the flap is connected to a counterweight 44. The function of the flap is described in the article mentioned at the beginning and is therefore not mentioned further. In Fig. 3 is the closed flap 43 and the piston rod of the pressure cylinder which is in contact therewith 42 shown.

Ebenfalls aus Fig. 1 ist ersichtlich, dass der Speiseschacht 1 über ein Leitblech 45 mit einer Karde 46 verbunden ist.1 that the feed shaft 1 is connected to a card 46 via a guide plate 45.

Mit der Umrandung der Karde 46 mittels strichpunktierter Linien soll ausgedrückt werden, dass der Speiseschacht 1 auch mit anderen Spinnereimaschinen verbunden werden kann, welche eine Fasermatte weiter verarbeiten.The bordering of the card 46 by means of dash-dotted lines is intended to express that the feed shaft 1 can also be connected to other spinning machines which further process a fiber mat.

Die an sich bekannten Elemente der Karde 46 umfassen einen Speisezylinder 47, angetrieben von einem Antrieb 56, eine Briseurwalze 48, angetrieben von einem Antrieb 57, einen Tambour mit einem Wanderdeckel 50 sowie eine Dofferwalze 51, eine Abnehmerwalze 52, ein Quetschwalzenpaar 53, ein Kondenser 54 und ein Abtastwalzenpaar 55, wobei, wie aus Fig. 1 ersichtlich, die Elemente 51, 52, 53 und 55 von einem gemeinsamen Antrieb 58 angetrieben sind.The known per se elements of the card 46 include a feed cylinder 47, driven by a drive 56, a Briseurwalze 48, driven by a drive 57, a spool with a revolving flat 50 and a doffer 51, a doffer 52, ei n nip roller pair 53, a Condenser 54 and a pair of scanning rollers 55, wherein, as can be seen in FIG. 1, elements 51, 52, 53 and 55 are driven by a common drive 58.

Im weiteren werden die Antriebe 56, 57 und 58 durch die Steuerung 39 gesteuert. Solche Steuerungen sind ansich bekannt und deshalb nicht näher beschrieben. Im einfachsten Falle kann unter der Steuerung 39 die Einschaltfunktion der gezeigten Kardenantriebe verstanden werden, welche ihrerseits Bestandteil einer umfassenden, hier nicht beschriebenen Kardensteuerung sein können.Furthermore, the drives 56, 57 and 58 are controlled by the controller 39. Such controls are known per se and are therefore not described in detail. In the simplest case, the control 39 can be understood to mean the switch-on function of the card drives shown, which in turn can be part of a comprehensive card control not described here.

Im Betrieb werden Faserflocken durch den Ausscheidekopf 3 in den Luftabscheideschacht 6 geleitet und von dort mittels der Speisewalze 9 und der Auflösewalze 10 in den Vorlageschacht 11 gefördert. Anschliessend verdichten die stationären Austragwalzen 12 die Faserflocken des Vorlageschachtes 11 entsprechend dem Abstand A zu einer Fasermatte, welche mittels dieser stationären Austragwalzen 12 zwischen die bewegbare Austragwalze 13 und die gegenüberliegende stationäre Austragwalze 12 gefördert und dadurch zu einer noch mehr verdichteten Fasermatte gepresst wird. Diese gepresste Fasermatte gelangt anschliessend auf das Leitblech 45, und auf diesem weiter in die Karde 46, d.h. zur Speisewalze 47.In operation, fiber flakes are passed through the separating head 3 into the air separation shaft 6 and from there conveyed into the feed shaft 11 by means of the feed roller 9 and the opening roller 10. Subsequently the stationary discharge rollers 12 compress the fiber flakes of the feed chute 11 according to the distance A to a fiber mat, which is conveyed between the movable discharge roller 13 and the opposite stationary discharge roller 12 by means of these stationary discharge rollers 12 and is thereby pressed into an even more compressed fiber mat. This pressed fiber mat then passes onto the guide plate 45, and on this further into the card 46, ie to the feed roller 47.

Muss nun aus irgendeinem Grunde die Kardenfunktion gestoppt werden, indem dabei die vorgenannten Antriebe 56, 57 und 58 gestoppt werden, so wird gleichzeitig von der Steuerung 39 das Ventil 34 umgestellt, so dass die Druckleitung 32 entlüftet und die Druckleitungen 41 mit Druck beschickt wird. Dadurch wird einerseits die bewegbare Austragwalze 13 in Schwenkrichtung W zurück in die Ruheposition versetzt und andererseits schliesst der Druckzylinder 42 die Klappe 43.If for some reason the card function now has to be stopped by stopping the aforementioned drives 56, 57 and 58, the valve 39 is simultaneously changed over by the controller 39 so that the pressure line 32 is vented and the pressure lines 41 are supplied with pressure. As a result, on the one hand the movable discharge roller 13 is moved back into the rest position in the pivoting direction W and on the other hand the pressure cylinder 42 closes the flap 43.

Es versteht sich jedoch, dass die erfindungsgemässe Bewegung der bewegbaren Austragwalze 13 aus der Betriebsposition in die Ruheposition nicht von der Kombination mit der Klappe 43 abhängig ist. Es entspricht jedoch einer vorteilhaften Kombination, falls der Speiseschacht eine in dieser Anmeldung gezeigte oder analoge Klappe aufweist.However, it goes without saying that the movement according to the invention of the movable discharge roller 13 from the operating position into the rest position is not dependent on the combination with the flap 43. However, it corresponds to an advantageous combination if the feed shaft has a flap shown or analog in this application.

Sobald die Kardenfunktion wieder aufgenommen wird, wird das Ventil 34 in die in Fig. 1 gezeigte Lage zurückversetzt, so dass die bewegbare Austragwalze 13 wieder in Betriebsposition und der Zylinder 42 wieder zurückgezogen wird, so dass die Klappe 43 wieder frei durch die Luftbewegungen bewegbar ist. Dabei versteht man unter Luftbewegungen die Luftströmung aus dem Abluftraum 8 in das Abluftgehäuse 4.As soon as the carding function is resumed, the valve 34 is returned to the position shown in FIG. 1, so that the movable discharge roller 13 is again in the operating position and the cylinder 42 is pulled back again, so that the flap 43 is free again is movable by the air movements. Air movements are understood to mean the air flow from the exhaust air space 8 into the exhaust air housing 4.

Fig. 6 zeigt einen Speiseschacht 1.1, welcher insofern eine Variante zum Speiseschacht 1 von Fig. 1 ist, als ein Förderband 59, die bewegbare Austragwalze 13 sowie die dazugehörige stationäre Austragwalze 12 umfasst, so dass die von den beiden stationären Austragwalzen 12 ausgetragene Fasermatte über das Förderband 59 in den Zwischenraum mit dem Abstand B gefördert wird. Dabei ist der Bügel 26 derart gestaltet, dass diese das Förderband übergreift, was in Fig.4 mit dem mit strichtpunktierten Linien eingezeichneten Förderband 59 andeutungsweise dargestellt ist.FIG. 6 shows a feed shaft 1.1, which is a variant of the feed shaft 1 of FIG. 1, in that a conveyor belt 59 comprises the movable discharge roller 13 and the associated stationary discharge roller 12, so that the fiber mat discharged from the two stationary discharge rollers 12 over the conveyor belt 59 is conveyed into the space with the distance B. The bracket 26 is designed in such a way that it overlaps the conveyor belt, which is shown in FIG. 4 with the conveyor belt 59 shown in dash-dotted lines.

Dadurch kann die Antriebskette 20 sowie die diese Kette aufnehmenden Kettenräder (nicht gezeigt) entfallen, da die bewegbare Austragwalze 13 mittels Förderband 59 von der stationären Austragwalze 12 angetrieben werden kann. Es besteht jedoch ebenfalls die Möglichkeit, die Kette 20 sowie die dazugehörigen Kettenräder zu belassen und das Förderband 59 von der Antriebsfunktion zu entlasten.As a result, the drive chain 20 and the chain wheels (not shown) accommodating this chain can be dispensed with, since the movable discharge roller 13 can be driven by the stationary discharge roller 12 by means of a conveyor belt 59. However, there is also the possibility of leaving the chain 20 and the associated sprockets and relieving the conveyor belt 59 of the drive function.

Alle übrigen Elemente des Speiseschachtes 1.1 entsprechen denjenigen des Speiseschachtes 1, weshalb sie nicht nochmals gekennzeichnet sind.All other elements of the feed shaft 1.1 correspond to those of the feed shaft 1, which is why they are not identified again.

Fig. 7 zeigt einen Speiseschacht 1.2, welcher gegenüber dem Speiseschacht 1 von Fig. 1 insofern eine Variante ist, als der Vorlageschacht 11.1 mit Blickrichtung auf Fig. 7 gesehen, durch ein Förderband 60 und einem dazu gegenüberliegenden Förderband 61 sowie durch zwei Stirnwände 62 (in Fig. 7 nur eine Stirnwand sichtbar) und in Fig. 7 mit gestrichelten Linien dargestellt gebildet wird.FIG. 7 shows a feed shaft 1.2, which is a variant compared to the feed shaft 1 of FIG. 1 in that the feed shaft 11.1, viewed in the direction of FIG. 7, through a conveyor belt 60 and a conveyor belt 61 opposite thereto and is formed by two end walls 62 (only one end wall visible in FIG. 7) and shown in dashed lines in FIG. 7.

Dabei ist das Förderband 60 stationär und das Förderband 61 um die Achse 63 schwenkbar angeordnet. Die Achse 63 ist gleichzeitig Achse für die obere (mit Blick auf Fig. 7 gesehen) Umlenkwalze 64.The conveyor belt 60 is stationary and the conveyor belt 61 is arranged to be pivotable about the axis 63. The axis 63 is at the same time the axis for the upper deflection roller 64 (viewed in FIG. 7).

Wie aus Fig. 7 ersichtlich, sind die unteren Umlenkwalzen der Förderbänder 60 und 61 in gleicher Weise angetrieben, wie die stationären Antriebswalzen 12, jedoch mit dem Unterschied, dass das Spannungsausgleichsrad 18 des Antriebes 15 in der Lage sein muss, die Bewegungen des schwenkbaren Förderbandes 61 aufzunehmen.As can be seen from FIG. 7, the lower deflection rollers of the conveyor belts 60 and 61 are driven in the same way as the stationary drive rollers 12, but with the difference that the tension compensation wheel 18 of the drive 15 must be able to move the pivotable conveyor belt 61 record.

Die Umlenkwalzen des Förderbandes 61 (nur die obere Umlenkwalze 64 gekennzeichnet) werden an ihren Stirnseiten im gleichen Sinne durch Laschen 70 und 71 (Fig. 8) miteinander verbunden, wie dies mit den in Fig. 4 u. 5 als Schwenklaschen 23 und 24 bezeichneten Laschen gezeigt ist. Ebenso sind im gleichen Sinne wie in Fig. 4 gezeigt, die genannten Verbindungslaschen 70 und 71 durch einen Bügel 28, analog zum Bügel 26 von Fig. 4, miteinander verbunden, sodass der Druckzylinder 14.1 schwenkbar daran befestigt werden kann. Der Druckzylinder 14.1 ist seinerseits in gleicher Weise wie der Druckzylinder 14 von Fig. 4 schwenkbar am Gehäuse 2 befestigt und mit der Druckleitung 32 verbunden.The deflecting rollers of the conveyor belt 61 (only the upper deflecting roller 64 marked) are connected to one another on their end faces by tabs 70 and 71 (FIG. 8), as is the case in FIGS. 5 shown as swivel tabs 23 and 24 tabs. Likewise, in the same sense as shown in FIG. 4, the connecting tabs 70 and 71 mentioned are connected to one another by a bracket 28, analogously to the bracket 26 of FIG. 4, so that the pressure cylinder 14.1 can be pivotally attached to it. The pressure cylinder 14.1 is in turn pivotally attached to the housing 2 in the same way as the pressure cylinder 14 of FIG. 4 and connected to the pressure line 32.

Durch die Schwenkbarkeit des Förderbandes 61 besteht die Möglichkeit die untere Umlenkwalze des Förderbandes 61 in gleicher Funktion wie die bewegbare Austragwalze 13, gegen die untere Umlenkwalze des Förderbandes 60 in die Betriebsposition des Förderbandes 61 zu schwenken resp. dieses in Ruheposition zurückzuschwenken, wenn die Kardenfunktion stillgesetzt wird.Due to the pivotability of the conveyor belt 61, there is the possibility of the lower deflection roller of the conveyor belt 61 having the same function as the movable discharge roller 13, respectively to pivot against the lower deflecting roller of the conveyor belt 60 into the operating position of the conveyor belt 61. swing it back into the rest position when the carding function is stopped.

Fig. 8 zeigt auf der linken Seite des Förderbandes 60 und 61, mit Blick auf Fig. 8 gesehen, ein Kettenrad 19.1, welches dem Kettenrad 19 von Fig. 5 entspricht, welches auf beiden unteren Wellen der Förderbänder 60 und 61 vorgesehen ist, und auf der rechten Seite eine Kette 20.1, welche zusammen mit den entsprechenden Kettenrädern (nicht gezeigt) die obere Umlenkwalze antreiben, falls dies nicht durch das Förderband selbst geschieht.Fig. 8 shows on the left side of the conveyor belt 60 and 61, as seen in Fig. 8, a sprocket 19.1, which corresponds to the sprocket 19 of Fig. 5, which is provided on both lower shafts of the conveyor belts 60 and 61, and on the right side a chain 20.1 which, together with the corresponding sprockets (not shown), drive the upper deflection roller if this is not done by the conveyor belt itself.

In Fig. 8 ist nur das stationäre Förderband 60 gezeigt, dabei ist ersichtlich, dass die beiden freien Enden der Achse der oberen Umlenkwalze je in einem im Gehäuse 2 befestigten Lager 65 und die Welle der unteren Umlenkwalze je in einem, im Gehäuse 2 befestigten Lagern 66 drehbar gelagert sind. Es versteht sich, dass die Achse der oberen Umlenkwalze des Förderbandes 61 mit den beiden freien Enden ebenfalls in analogerweise wie die Achse der Umlenkwalze des Förderbandes 60 in, im Gehäuse 2 vorgesehenen Lagern drehbar gelagert ist, währenddem die Welle der unteren Umlenkwalze des Förderbandes 61 in den vorerwähnten, Laschen 70 und 71 drehbar gelagert ist.In Fig. 8 only the stationary conveyor belt 60 is shown, it can be seen that the two free ends of the axis of the upper deflecting roller each in a bearing 65 fixed in the housing 2 and the shaft of the lower deflecting roller each in a bearing fixed in the housing 2 66 are rotatably mounted. It goes without saying that the axis of the upper deflection roller of the conveyor belt 61 with the two free ends is likewise rotatably mounted in bearings provided in the housing 2 in a manner analogous to the axis of the deflection roller of the conveyor belt 60, while the shaft of the lower deflection roller of the conveyor belt 61 in the aforementioned, tabs 70 and 71 is rotatably mounted.

Fig. 9 zeigt eine weitere Variante, indem die in Fig. 4 gezeigte rechte stationäre Austragwalze 12 weggelassen wird, und die bewegbare Austragwalze 13 um die Schwenkachse 67 schwenkbar gelagert ist. Um dies zu ermöglichen, ist die Welle 68 der bewegbaren Austragwalze 13 drehbar in einer Schwenkplatte 69 gelagert, welche ihrerseits schwenkbar mit dem Druckzylinder 14.2 verbunden ist, der seinerseits schwenkbar am Gehäuse 2 angeordnet ist.FIG. 9 shows a further variant in that the right-hand stationary discharge roller 12 shown in FIG. 4 is omitted and the movable discharge roller 13 is pivotably mounted about the pivot axis 67. To make this possible, the shaft 68 of the movable discharge roller 13 is rotatably mounted in a swivel plate 69, which in turn is pivotally connected to the pressure cylinder 14.2, which in turn is arranged pivotably on the housing 2.

Um die bewegbare Austragwalze 13 anzutreiben, ist diese in analogerweise wie die stationäre Austragwalze 12 mit einem Zahnrad 19 versehen, wobei die Kette 16 des Antriebes 15, wie mit strichpunktierten Linien in Fig. 9 gezeigt, die Kettenräder umkreist, um die bewegbare Austragwalze 13 in gegengesetzter Drehrichtung anzutreiben als die stationäre Austragwalze 12. Die übrigen Elemente sind gleich und dementsprechend mit gleichen Bezugszeichen zu sehen. Der Vorlageschacht 11.1 ist entsprechend der Schwenkplatte 69 gegenüber dem Vorlageschacht 11 angepasst.In order to drive the movable discharge roller 13, it is provided in a manner analogous to the stationary discharge roller 12 with a gear wheel 19, the chain 16 of the drive 15 encircling the chain wheels around the movable discharge roller 13 in as shown in broken lines in FIG. 9 to drive in the opposite direction of rotation than the stationary discharge roller 12. The other elements are the same and can be seen accordingly with the same reference numerals. The feeder shaft 11.1 is adapted in relation to the feeder shaft 11 in accordance with the swivel plate 69.

Letztlich sei erwähnt, dass die Erfindung nicht auf die Kombination mit einer Karde eingeschränkt ist, sondern auch mit anderen Spinnereimaschinen kombiniert werden kann, in welche eine Fasermatte zugespeist werden muss.Ultimately, it should be mentioned that the invention is not limited to the combination with a card, but can also be combined with other spinning machines into which a fiber mat has to be fed.

Claims (10)

1. An apparatus for delivering a textile fibre web from a feed chute (2) in a spinning plant, the apparatus comprising at least one non- displaceable delivery means (12; 60) and at least one delivery means (13; 61) displaceable towards and away from the non-displaceable delivery means, characterised in that the displaceable delivery means (13; 61) is pivotally mounted in at least one link (23, 24; 70, 71) or plate (69) and the link or plate is pivotally mounted, and the displaceable delivery means (13; 61) can be so moved by drive means (14; 14.1; 14.2) controlled by control means (39) that when the delivery means (12, 13; 60, 61) are stationary the displaceable delivery means (13; 61) moves from an operative position, in which the last- mentioned means presses the fibre web onto the non-displaceable delivery means (12; 60), into an inoperative position in which the web experiences substantially no pressing in the delivery means.
2. An apparatus according to claim 1, characterised in that the non-displaceable delivery means (12) are two non-displaceable rotatable and drivable delivery rollers (12) disposed with a predetermined spacing (A) from one another and the displaceable delivery means (13) takes the form of a drivable delivery roller (13) movable towards and away from one of the non-displaceable delivery rollers (12).
3. An apparatus according to claim 1, characterised in that the displaceable delivery means is a delivery roller (13) which can be pivoted towards the non-displaceable delivery roller (12).
4. An apparatus according to claim 3, characterised in that the pivoted delivery roller (13) is connected to one of the non-displaceable rollers (12) by a conveyor belt (59) which extends substantially over the whole length of the rollers, and the pivot spindle of the displaceable delivery roller (13) is also the shaft (25) of the non-displaceable delivery roller (12).
5. An apparatus according to claim 1, characterised in that the non-displaceable delivery means take the form of a non-displaceable conveyor belt (60) and the displaceable delivery means (61) takes the form of a pivoted conveyor belt (61), the latter comprising a non-displaceable top reversing roller (64) and a displaceable bottom reversing roller which is displaceable towards the non-displaceable conveyor belt (60).
6. An apparatus according to claim 1, characterised in that the drive means takes the form of a single-acting spring-returned electropneumatic cylinder.
7. An apparatus according to claim 1, characterised in that the control means takes the-form of a 4/2-way valve.
8. Use of the control means according to claim 7, characterised in that the 4/2-way valve is so controlled in synchronism with a drive of a spinning machine, for example a card (46), disposed after the feed chute (1) that when the spinning machine is stationary the displaceable delivery means (13; 61) moves from the operative position into the inoperative position.
9. An apparatus according to claim 1, characterised in that the feed chute (1) comprises a pneumatic filling device (3, 4, 5, 6) and an exhaust air flap (43) which a single-acting spring-returned electropneumatic cylinder (42) opens and closes and which is so operated in synchronism with the drive means (14; 14.1; 14.2) of the displaceable delivery means (13; 61) that when the flap (43) is in its closed position the displaceable delivery means (13; 61) is in the inoperative position.
10.An apparatus according to claim 6, characterised in that the pressure for activating the electropneumatic cylinder is maintained at a predetermined value by a pressure-regulating valve.
EP89106852A 1988-05-11 1989-04-17 Device for taking a fibre mat from a feeding duct Expired - Lifetime EP0341450B1 (en)

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CH1794/88 1988-05-11
CH179488 1988-05-11

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CN103603092B (en) * 2013-11-21 2015-11-04 山东省永信非织造材料有限公司 The anti-defect device of many storehouses feed roll motor

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DE58902027D1 (en) 1992-09-17
US4993120A (en) 1991-02-19
JPH01321919A (en) 1989-12-27
EP0341450A1 (en) 1989-11-15

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