EP0468985B1 - A device for feeding flaked fibrous material - Google Patents

A device for feeding flaked fibrous material Download PDF

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Publication number
EP0468985B1
EP0468985B1 EP90905468A EP90905468A EP0468985B1 EP 0468985 B1 EP0468985 B1 EP 0468985B1 EP 90905468 A EP90905468 A EP 90905468A EP 90905468 A EP90905468 A EP 90905468A EP 0468985 B1 EP0468985 B1 EP 0468985B1
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EP
European Patent Office
Prior art keywords
air
chute
shaft
filling
feeding
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Expired - Lifetime
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EP90905468A
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German (de)
French (fr)
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EP0468985A1 (en
Inventor
Akiva Pinto
Günter Lucassen
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Hergeth Hollingsworth GmbH
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Hergeth Hollingsworth GmbH
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Publication of EP0468985A1 publication Critical patent/EP0468985A1/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 feeding flake fiber material to processing machines according to the preamble of the main claim.
  • Such feeding devices are used, for example, for cards or cards, but also for opening and cleaning machines.
  • a known device for feeding fiber material processing machines e.g. Carding, carding, punching machines or the like is known for example from DE-OS 36 25 311.
  • the feed device has an upper filling shaft with perforated walls from which the transport air flow can be removed.
  • a feed roller is arranged which interacts with an impact or opening roller.
  • a feed shaft with also partially perforated shaft walls leads to a pair of feed rollers via which the nonwoven fabric is fed to the subsequent processing machine.
  • Tangential to the impact roller, but behind the impact point a stream of compressed air is blown in, which emerges again at the perforated shaft walls of the feed shaft and is fed to a fan for recirculation.
  • the transport air flow that emerges at the upper filling shaft is discharged via a separate exhaust air duct.
  • a feeding device only allows the compression of the fibers in the feed shaft does not help to reduce the dust carried with cotton fiber flakes.
  • the invention has for its object to develop the feeding device of the type mentioned in such a way that a reduction in the dust content in the fiber flakes is made possible.
  • the transport air stream is advantageously discharged within the housing in an exhaust duct essentially parallel to the filling and feed duct to an exhaust air connection at the lower part of the machine.
  • This exhaust air connection is arranged downstream of the air-permeable shaft wall of the feed shaft and can thereby additionally discharge the compressed air flow which has been separated again from the fibers and is particularly enriched with dust and foreign particles after the point of impact between the feed roller and the impact roller.
  • a partial air flow of the transport air flow led out of the filling shaft is used as the compression air flow, the branch point being arranged downstream of the air-permeable shaft wall of the filling shaft, but in front of the air-permeable shaft wall of the feed shaft. In this way it is ensured that only the transport air stream separated in the filling shaft is used as the compression air stream.
  • the entire exhaust air flow of an exhaust air disposal e.g. the successor machine can be connected.
  • the branched-off partial air flow is directed tangentially to the beater roller at the nip point between the feed and beater rollers, which means that the branched-off part air stream is advantageously used not only as a compressed air stream, but also at the impact point in the nip point due to the blowing action supported by dust and foreign particles from the fiber flakes.
  • the compression stream enriched with the waste and dust particles is then not recirculated but disposed of directly via the exhaust duct.
  • the partial air flow can be shut off and released alternately, as a result of which a pump effect occurs in the feed shaft, which enables a self-cleaning effect on the air-permeable shaft wall of the feed shaft, thereby clogging the air-permeable shaft wall, e.g. a screen wall, prevented, and a smooth continuous operation guaranteed.
  • the exhaust air duct can be at least partially intermittently shut off downstream of the air-permeable duct wall of the filling duct. In this way, a self-cleaning effect on the air-permeable shaft wall can also be achieved in the filling shaft. Shutting off can be done via slides or flaps, which can also be divided across the width of the shaft and can be operated alternately.
  • the figure shows a feed device for a card, but the air duct is also suitable for a feed opening of an opening and cleaning machine.
  • the fiber material in flake form is fed via a transport channel 10 to an upper filling shaft 1, which is connected via an air-permeable shaft wall 2 to an exhaust air space 3, which is a component of an exhaust air shaft 4, which extends from the exhaust air chamber 3 to the lower part of the machine an exhaust air connection 5 runs essentially parallel to the filling shaft 1 and the feed shaft 6 arranged underneath.
  • This exhaust duct 4 is arranged inside the housing 7 of the feed device.
  • a feed roller 8 is arranged, which cooperates with an impact or opening roller 9, from which the feed shaft 6 extends tangentially.
  • the feed shaft 6 also has an at least partially air-permeable shaft wall 11, which is also open to the exhaust air shaft 4.
  • flaps or slides 12 are arranged, which are opened or closed intermittently, whereby a pumping effect is generated in the filling shaft, which prevents the air-permeable intermediate wall 2 from clogging.
  • the butterfly valves and slides can only release part of the shaft width.
  • a fan 14 is arranged, which a partial air flow B of the transport air flow A branches off and feeds the nip point between the feed roller 8 and the impact roller 9 tangentially to the impact roller.
  • a pulsating blowing in of the partial air flow B is possible via a pivotable slide valve 15, which intermittently closes or opens the suction opening 16 of the fan 14.
  • the partial air flow B is shown behind the impact point in the feed shaft 6 as a compression flow C, which in the lower region of the feed shaft 6 through the air-permeable shaft wall 11 of the feed shaft 6, indicated by the arrows D, passes into the exhaust air shaft 4 in order to deal with it to mix the partial air flow B reduced transport air flow E and to be disposed of as exhaust air F via the exhaust air connection 5.
  • the feed shaft 6 is slightly inclined from the vertical by the feed roller 8 by approximately 10 ° and passes into a chute slide 18 via which the nonwoven fabric is fed to a carding machine 20 without removal rollers.
  • the exhaust air connection 5 can be connected to an exhaust air disposal 22 of the card 20.

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

Abstract

In a device for feeding flaked fibrous material into processing machines with an upper filling shaft (1) fitted in a casing, in which a feed roller (8) is arranged at its lower end and cooperates with a beater or opening roller (9) from which a feed shaft (6) runs tangentially, where both the filling (1) and feed (6) shafts have at least one at least partially air-permeable wall (2, 11), where additionally pneumatic compression occurs in the feed shaft through the admission of a compressing airstream (C) and where the transport airflow (A) is discharged at the air-permeable wall (2) of the filling shaft (1), the transport airflow (A) is discharged into an air outlet shaft (3, 4) substantially parallel to the filling and feed shafts (1, 6) within the casing (7) to an air discharge connection (5) arranged downstream of the air-permeable wall (11) of the feed shaft, a part (B) of the transport airflow (A) is taken as a compression airflow (C) into the feed shaft at a branch between the filling (1) and feed (6) shafts and the compression airflow (D) emerging form the air-permeable wall (11) of the feed shaft is taken into the air outlet shaft (4) downstream of the branch.

Description

Die Erfindung betrifft eine Vorrichtung zum Speisen von in Flockenform befindlichem Fasergut zu Verarbeitungsmaschinen nach dem Oberbegriff des Hauptanspruchs.The invention relates to a device for feeding flake fiber material to processing machines according to the preamble of the main claim.

Derartige Speisevorrichtungen werden beispielsweise für Karden oder Krempel aber auch für Öffnungs- und Reinigungsmaschinen verwendet.Such feeding devices are used, for example, for cards or cards, but also for opening and cleaning machines.

Eine bekannte Vorrichtung zum Speisen von Fasermaterial verarbeitenden Maschinen z.B. Karden, Krempeln, Schlagmaschinen oder dergleichen ist beispielsweise aus der DE-OS 36 25 311 bekannt. Die Speisevorrichtung weist einen oberen Füllschacht mit perforierten Wänden auf, aus denen der Transportluftstrom abgeführt werden kann. Am unteren Ende des Füllschachtes ist eine Speisewalze angeordnet, die mit einer Schlag- oder Öffnerwalze zusammenwirkt. Tangential von der Schlagwalze führt ein Speiseschacht mit ebenfalls teilweise perforierten Schachtwänden zu einem Einzugswalzenpaar, über das das Faservlies der nachfolgenden Verarbeitungsmaschine zugeführt wird. Tangential zu der Schlagwalze aber hinter der Schlagstelle wird ein Verdichtungsluftstrom eingeblasen, der an den perforierten Schachtwänden des Speiseschachtes wieder austritt und einem Ventilator zwecks Rezirkulation zugeführt wird.A known device for feeding fiber material processing machines e.g. Carding, carding, punching machines or the like is known for example from DE-OS 36 25 311. The feed device has an upper filling shaft with perforated walls from which the transport air flow can be removed. At the lower end of the filling shaft, a feed roller is arranged which interacts with an impact or opening roller. Tangentially from the beater roller, a feed shaft with also partially perforated shaft walls leads to a pair of feed rollers via which the nonwoven fabric is fed to the subsequent processing machine. Tangential to the impact roller, but behind the impact point, a stream of compressed air is blown in, which emerges again at the perforated shaft walls of the feed shaft and is fed to a fan for recirculation.

Der Transportluftstrom, der an dem oberen Füllschacht austritt, wird über einen separaten Abluftkanal abgeführt. Eine derartige Speisevorrichtung ermöglicht nur die Verdichtung der Fasern im Speiseschacht, trägt aber nicht zur Verringerung des mit Baumwollfaserflocken mitgeführten Staubes bei.The transport air flow that emerges at the upper filling shaft is discharged via a separate exhaust air duct. Such a feeding device only allows the compression of the fibers in the feed shaft does not help to reduce the dust carried with cotton fiber flakes.

Der Erfindung liegt die Aufgabe zugrunde, die Speisevorrichtung der eingangs genannten Art derart weiterzubilden, daß eine Verringerung des Staubanteils in den Faserflocken ermöglicht wird.The invention has for its object to develop the feeding device of the type mentioned in such a way that a reduction in the dust content in the fiber flakes is made possible.

Zur Lösung dieser Aufgabe dienen erfindungsgemäß die Merkmale des Hauptanspruchs.According to the invention, the features of the main claim serve to achieve this object.

Der Transportluftstrom wird in vorteilhafter Weise innerhalb des Gehäuses in einem im wesentlichen zu dem Füll- und Speiseschacht parallelen Abluftschacht zu einem Abluftanschluß am unteren Teil der Maschine abgeführt. Dieser Abluftanschluß ist stromabwärts der luftdurchlässigen Schachtwand des Speiseschachtes angeordnet und kann dadurch auch den wieder von den Fasern abgetrennten Verdichtungsluftstrom zusätzlich abführen, der nach der Schlagstelle zwischen Speise- und Schlagwalze besonders mit Staub- und Fremdpartikeln angereichert ist. Als Verdichtungsluftstrom wird ein Teilluftstrom des aus dem Füllschacht herausgeführten Transportluftstroms verwendet, wobei die Abzweigstelle stromabwärts der luftdurchlässigen Schachtwand des Füllschachtes, aber vor der luftdurchlässigen Schachtwand des Speiseschachtes angeordnet ist. Auf diese Weise ist sichergestellt, daß als Verdichtungsluftstrom nur der im Füllschacht abgetrennte Transportluftstrom verwendet wird.The transport air stream is advantageously discharged within the housing in an exhaust duct essentially parallel to the filling and feed duct to an exhaust air connection at the lower part of the machine. This exhaust air connection is arranged downstream of the air-permeable shaft wall of the feed shaft and can thereby additionally discharge the compressed air flow which has been separated again from the fibers and is particularly enriched with dust and foreign particles after the point of impact between the feed roller and the impact roller. A partial air flow of the transport air flow led out of the filling shaft is used as the compression air flow, the branch point being arranged downstream of the air-permeable shaft wall of the filling shaft, but in front of the air-permeable shaft wall of the feed shaft. In this way it is ensured that only the transport air stream separated in the filling shaft is used as the compression air stream.

Über den im unteren Teil der Maschine angeordneten Abluftanschluß kann der gesamte Abluftstrom einer Abluftentsorgung z.B. der Nachfolgemaschine angeschlossen werden.Via the exhaust air connection located in the lower part of the machine, the entire exhaust air flow of an exhaust air disposal e.g. the successor machine can be connected.

Vorzugsweise ist vorgesehen, daß der abgezweigte Teilluftstrom tangential zur Schlagwalze auf den Klemmpunkt zwischen Speise- und Schlagwalze gerichtet ist, wodurch in vorteilhafter Weise der abgezweigte Teilluftstrom nicht nur als Verdichtungsluftstrom verwendet wird, sondern darüber hinaus an der Schlagstelle in dem Klemmpunkt durch die Blaswirkung ein Herauslösen von Staubund Fremdpartikel aus den Faserflocken unterstützt. Der mit den Abfall- und Staubpartikeln angereicherte Verdichtungsstrom wird dann nicht rezirkuliert sondern direkt über den Abluftschacht entsorgt.It is preferably provided that the branched-off partial air flow is directed tangentially to the beater roller at the nip point between the feed and beater rollers, which means that the branched-off part air stream is advantageously used not only as a compressed air stream, but also at the impact point in the nip point due to the blowing action supported by dust and foreign particles from the fiber flakes. The compression stream enriched with the waste and dust particles is then not recirculated but disposed of directly via the exhaust duct.

Der Teilluftstrom kann abwechselnd abgesperrt und freigegeben sein, wodurch in dem Speiseschacht ein Pumpeffekt auftritt, der an der luftdurchlässigen Schachtwand des Speiseschachtes einen Selbstreinigungseffekt ermöglicht, dadurch ein Zusetzen der luftdurchlässigen Schachtwand, z.B. einer Siebwand, verhindert, und einen reibungslosen kontinuierlichen Betrieb gewährleistet.The partial air flow can be shut off and released alternately, as a result of which a pump effect occurs in the feed shaft, which enables a self-cleaning effect on the air-permeable shaft wall of the feed shaft, thereby clogging the air-permeable shaft wall, e.g. a screen wall, prevented, and a smooth continuous operation guaranteed.

Der Abluftschacht kann stromabwärts der luftdurchlässigen Schachtwand des Füllschachtes zumindest teilweise intermittierend absperrbar sein. Auf diese Weise ist auch im Füllschacht ein Selbstreinigungseffekt an der luftdurchlässigen Schachtwand erreichbar. Das Absperren kann über Schieber oder Klappen erfolgen, die über die Breite des Schachtes auch unterteilt sein können und abwechselnd betätigt werden können.The exhaust air duct can be at least partially intermittently shut off downstream of the air-permeable duct wall of the filling duct. In this way, a self-cleaning effect on the air-permeable shaft wall can also be achieved in the filling shaft. Shutting off can be done via slides or flaps, which can also be divided across the width of the shaft and can be operated alternately.

Im folgenden wird unter Bezugnahme auf die einzige Zeichnung ein Ausführungsbeispiel der Erfindung näher erläutert.In the following an embodiment of the invention will be explained in more detail with reference to the single drawing.

Die Figur zeigt eine Speisevorrichtung für eine Karde, wobei die Luftführung aber auch für eine Speiseöffnung einer Öffnungs- und Reinigungsmaschine geeignet ist. Das in Flockenform befindliche Fasergut wird über einen Transportkanal 10 einem oberen Füllschacht 1 zugeführt, der über eine luftdurchlässige Schachtwand 2 mit einem Abluftraum 3 verbunden ist, der ein Bestandteil eines Abluftschachtes 4 ist, der von der Abluftkammer 3 bis in den unteren Teil der Maschine zu einem Abluftanschluß 5 im wesentlichen parallel zu dem Füllschacht 1 und dem darunter angeordneten Speiseschacht 6 verläuft. Dieser Abluftschacht 4 ist dabei innerhalb des Gehäuses 7 der Speisevorrichtung angeordnet.The figure shows a feed device for a card, but the air duct is also suitable for a feed opening of an opening and cleaning machine. The fiber material in flake form is fed via a transport channel 10 to an upper filling shaft 1, which is connected via an air-permeable shaft wall 2 to an exhaust air space 3, which is a component of an exhaust air shaft 4, which extends from the exhaust air chamber 3 to the lower part of the machine an exhaust air connection 5 runs essentially parallel to the filling shaft 1 and the feed shaft 6 arranged underneath. This exhaust duct 4 is arranged inside the housing 7 of the feed device.

Am unteren Ende des Füllschachtes 1 ist eine Speisewalze 8 angeordnet, die mit einer Schlag- oder Öffnerwalze 9 zusammenwirkt, von der der Speiseschacht 6 tangential abgeht. Auch der Speiseschacht 6 weist eine zumindest teilweise luftdurchlässige Schachtwand 11 auf, die ebenfalls zum Abluftschacht 4 hin offen ist. Am unteren Ende der Abluftkammer 3 sind Klappen oder Schieber 12 angeordnet, die intermittierend geöffnet oder geschlossen werden, wodurch in dem Füllschacht ein Pumpeffekt erzeugt wird, der verhindert, daß sich die luftdurchlässige Zwischenwand 2 zusetzt. Die Absperrklappen und Schieber können auch jeweils nur einen Teil der Schachtbreite freigeben. In dem Abluftschacht 4 in dem Abschnitt unterhalb des Füllschachtes 1 ist ein Ventilator 14 angeordnet, der einen Teilluftstrom B des Transportluftstromes A abzweigt und tangential zur Schlagwalze dem Klemmpunkt zwischen Speisewalze 8 und Schlagwalze 9 zuführt. Über einen schwenkbaren Schieber 15, der intermittierend die Ansaugöffnung 16 des Ventilators 14 zuhält oder freigibt, ist ein pulsierendes Einblasen des Teilluftstromes B möglich. Der Teilluftstrom B ist hinter der Schlagstelle in dem Speiseschacht 6 als Verdichtungsstrom C dargestellt, der im unteren Bereich des Speiseschachtes 6 durch die luftdurchlässige Schachtwand 11 des Speiseschachtes 6, durch die Pfeile D gekennzeichnet, in den Abluftschacht 4 hindurchtritt, um sich dort mit dem um den Teilluftstrom B verminderten Transportluftstrom E zu vermischen und als Abluft F über den Abluftanschluß 5 entsorgt zu werden.At the lower end of the filling shaft 1, a feed roller 8 is arranged, which cooperates with an impact or opening roller 9, from which the feed shaft 6 extends tangentially. The feed shaft 6 also has an at least partially air-permeable shaft wall 11, which is also open to the exhaust air shaft 4. At the lower end of the exhaust air chamber 3 flaps or slides 12 are arranged, which are opened or closed intermittently, whereby a pumping effect is generated in the filling shaft, which prevents the air-permeable intermediate wall 2 from clogging. The butterfly valves and slides can only release part of the shaft width. In the exhaust duct 4 in the section below the filling duct 1, a fan 14 is arranged, which a partial air flow B of the transport air flow A branches off and feeds the nip point between the feed roller 8 and the impact roller 9 tangentially to the impact roller. A pulsating blowing in of the partial air flow B is possible via a pivotable slide valve 15, which intermittently closes or opens the suction opening 16 of the fan 14. The partial air flow B is shown behind the impact point in the feed shaft 6 as a compression flow C, which in the lower region of the feed shaft 6 through the air-permeable shaft wall 11 of the feed shaft 6, indicated by the arrows D, passes into the exhaust air shaft 4 in order to deal with it to mix the partial air flow B reduced transport air flow E and to be disposed of as exhaust air F via the exhaust air connection 5.

Der Speiseschacht 6 ist geringfügig von der Vertikalen durch die Speisewalze 8 um ca. 10° abgeneigt und geht ohne Abzugswalzen in eine Schachtrutsche 18 über, über die das Faservlies einer Karde 20 zugeführt wird. Dabei kann der Abluftanschluß 5 mit einer Abluftentsorgung 22 der Karde 20 verbunden sein.The feed shaft 6 is slightly inclined from the vertical by the feed roller 8 by approximately 10 ° and passes into a chute slide 18 via which the nonwoven fabric is fed to a carding machine 20 without removal rollers. The exhaust air connection 5 can be connected to an exhaust air disposal 22 of the card 20.

Claims (4)

  1. A device for feeding flocculent fiber material to processing machines (20), comprising an upper filling chute (1) arranged in a housing (7), at the lower end of which a feeding roll (8) is arranged cooperating with a beater or opening roll (9) from which a feeding chute (6) branches tangentially, the filling chute (1) and the feeding chute (6) having at least one at least partially air-permeable chute wall (2, 11), an additional pneumatic compacting being performed in the feeding chute (6) by injecting a compacting air flow (C), and the flow of transport air (A) being discharged at the air-permeable chute wall (2) of the filling chute (1),
    characterised in that
    - the flow of transport air (A) is discharged into an exhaust air chute (3, 4) within the housing (7), which is substantially parallel to the filling and feeding chute (1, 6), and to an exhaust air port member (5) arranged downstream of the air-permeable chute wall (11),
    - a partial air flow (B) of the flow of transport air (A) is supplied into the feeding chute (6) as the flow of compacting air (C) at a branching point between the filling chute (1) and the feeding chute (6), and
    - that the flow of compacting air (D) escaping from the air-permeable chute wall (11) of the feeding chute (6) is guided into the exhaust air chute (4) downstream of the branching point.
  2. The device according to claim 1, characterised in that the branched partial air flow (B) is directed onto the nip between the feeding roll (8) and the beater roll (9).
  3. The device according to claim 1 or 2, characterised in that the partial air flow (B) flows in in a pulsating manner via an intermittently operated shut-off device.
  4. The device according to one of claims 1 to 3, characterised in that the exhaust air chute (4) can at least partially be shut off intermittently downstream of the air-permeable chute wall (2) of the filling chute (1) by means of shut-off devices (12).
EP90905468A 1989-04-17 1990-04-10 A device for feeding flaked fibrous material Expired - Lifetime EP0468985B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3912565A DE3912565A1 (en) 1989-04-17 1989-04-17 DEVICE FOR FEEDING FIBER ARTICLES IN FLAKED SHAPE
DE3912565 1989-04-17

Publications (2)

Publication Number Publication Date
EP0468985A1 EP0468985A1 (en) 1992-02-05
EP0468985B1 true EP0468985B1 (en) 1993-08-04

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ID=6378845

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Application Number Title Priority Date Filing Date
EP90905468A Expired - Lifetime EP0468985B1 (en) 1989-04-17 1990-04-10 A device for feeding flaked fibrous material

Country Status (5)

Country Link
US (1) US5197162A (en)
EP (1) EP0468985B1 (en)
JP (1) JPH04504738A (en)
DE (2) DE3912565A1 (en)
WO (1) WO1990012909A1 (en)

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IT8620811A0 (en) * 1985-09-11 1986-06-17 Monchengladbach Rep Fed German ADJUSTMENT AND CONTROL DEVICE OF THE INTRODUCER CYLINDER OF A FLAKE FEEDER.
DE3617526A1 (en) * 1986-05-24 1987-11-26 Truetzschler & Co METHOD AND DEVICE FOR SUPPLYING A NUMBER OF CARDS, CRAWLS OR THE LIKE
JPS6420326A (en) * 1987-07-13 1989-01-24 Ohara Tekkosho Kk Apparatus for feeding cotton to card
DE3904317A1 (en) * 1989-02-14 1990-08-16 Hollingsworth Gmbh DEVICE FOR PNEUMATICALLY FEEDING FIBER GOODS INTO A SHAFT AND THE LIKE
US4970759A (en) * 1989-04-14 1990-11-20 Roberson James H Textile fiber processing apparatus and method
JPH03130420A (en) * 1989-10-12 1991-06-04 Howa Mach Ltd Card cotton feeder

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10118067A1 (en) * 2001-04-11 2002-10-17 Truetzschler Gmbh & Co Kg Carding assembly has the leading opening cylinders which can be rotated around the center points of the feed roller or adjacent cylinders, to set the gap between the clamping and combing points

Also Published As

Publication number Publication date
DE3912565A1 (en) 1990-10-18
EP0468985A1 (en) 1992-02-05
JPH04504738A (en) 1992-08-20
US5197162A (en) 1993-03-30
DE59002216D1 (en) 1993-09-09
WO1990012909A1 (en) 1990-11-01

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