EP0529246B1 - Appareil pour produire un matériau fibreux ou similaire avec un poids prédéterminé - Google Patents

Appareil pour produire un matériau fibreux ou similaire avec un poids prédéterminé Download PDF

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Publication number
EP0529246B1
EP0529246B1 EP92111415A EP92111415A EP0529246B1 EP 0529246 B1 EP0529246 B1 EP 0529246B1 EP 92111415 A EP92111415 A EP 92111415A EP 92111415 A EP92111415 A EP 92111415A EP 0529246 B1 EP0529246 B1 EP 0529246B1
Authority
EP
European Patent Office
Prior art keywords
wall
vibrating
hopper
delivery
roller
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
EP92111415A
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German (de)
English (en)
Other versions
EP0529246A1 (fr
Inventor
Siegfried Bernhardt
Uwe Dierks
Wolfgang Uliczka
Dietrich Menzel
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.)
Spinnbau GmbH
Original Assignee
Spinnbau GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Spinnbau GmbH filed Critical Spinnbau GmbH
Publication of EP0529246A1 publication Critical patent/EP0529246A1/fr
Application granted granted Critical
Publication of EP0529246B1 publication Critical patent/EP0529246B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 producing fiber material or the like with a predeterminable original weight, with a transport device for supplying fiber flakes to a filling shaft, which comprises a vibrating wall extending in the vertical direction and a displaceable wall, a fixed take-off roller being arranged in the exit region of the filling shaft , which feeds the emerging fiber material to a draw-off table, a displaceable draw-off roller being arranged at a distance opposite the fixed draw-off roller in the exit region of the fill shaft, and the fiber weight being measured in the exit region of the fill shaft and being converted into a signal which is used to control a fiber weight-influencing element Size how the vibrating frequency of the vibrating wall is used.
  • Such devices also called vibratory shaft feeders, first compress fluffy fibers, which, after they have been compacted in the desired manner, are then fed, for example, to a nonwoven formation system.
  • the fiber flakes are transported from a material box over an ascending needle slat and released from the latter with the aid of a doctor roller and fed to a filling shaft or vibrating shaft.
  • a filling shaft or vibrating shaft This comprises a vertically standing vibrating wall and an opposite movable wall, between which the fiber flakes are compressed.
  • the movable wall is manually adjustable to set the shaft width.
  • a fixed pressure roller is provided at the exit of the filling shaft, which deposits the compacted material on a feed table.
  • the fiber material is then fed to an electronic balance.
  • the vibrating movement of the vibrating wall is effected with the aid of an eccentric drive, the vibrating wall moving essentially parallel between two end positions.
  • An important parameter for the quality of the emerging fiber material is the original weight.
  • this is controlled by the height of the material column in the shaft, by the width of the shaft, by the vibrating frequency, by the pull-off speed of the transport table and by the pulling-in speed of a downstream carding device, but a direct measured variable can also be controlled by an intermediate scale, for example an electronic one Libra to be given.
  • the height of the material column in the shaft also depends on the transport speed the fiber flakes, which ultimately means the speed of the needle-punched cloth.
  • the invention it is surprisingly simple to use only one parameter, namely the pressure exerted by the fiber material between the draw-off rollers at the lower end of the filling shaft, to determine the optimal control of the device parameters which essentially determine the original weight, because this pressure gives indirectly via the material density and in connection with the set distance of the take-off rollers over the feed weight digestion.
  • the axes of the take-off rollers are advantageously essentially parallel to one another, so that a uniform quality is achieved over the entire discharge area of the filling shaft.
  • an eccentric drive is provided for the shaking movement of the shaking wall, the eccentric stroke generated by the eccentric drive being adjustable and / or adjustable depending on the signal from the pressure sensor. Since the material is compacted by the shaking movement, this density can be influenced in a particularly simple manner by increasing or reducing the stroke.
  • a fill level sensor is further preferably arranged in the fill shaft, wherein this fill level sensor can be a light barrier or an ultrasonic barrier.
  • the displaceable wall can also be displaceable continuously between a first position, which minimizes the width of the filling shaft, and a second position, which maximizes the width of the filling shaft.
  • a motor control for the movement of the displaceable wall can be implemented in a simple manner.
  • the invention also proposes that the displaceable take-off roller be arranged on the displaceable wall.
  • the take-off roller and wall can thus be moved synchronously.
  • the device according to the invention can be used to regulate the given weight of the fiber material automatically as follows:
  • the measurement signal of a balance changes the speed of the needle slat and thus the fill level in the shaft.
  • a slow needle slat speed means a low filling height
  • a higher needle slat speed requires a higher fiber flake column in the filling shaft.
  • the vibrating frequency, eccentric stroke, shaft width and distance of the take-off roller remain variable. These sizes can be changed with the help of the signal emitted by the pressure sensor.
  • the device according to the invention can also be operated in combination with a scale, in that, with a set constant original weight, in addition to the usual change in speed, in which case motors would be required for the various belts, a motor is used as before on the card feeder or on the fiber flock feeder and then accordingly being controlled. For example, more strokes can be generated, also on the vibrating wall, in order to obtain greater compaction at a constant retraction speed, or the shaft width is changed at a constant speed, vibrating frequency and speed of the needle bar can also be included if necessary.
  • FIG. 1 A vibrating shaft feeder known from the prior art is shown in FIG. 1.
  • the fiber flakes are introduced from a material box 1, which is only indicated schematically here, via a batten cloth 2, which is designed as a circumferential conveyor belt, into a housing 8 which contains the components of the vibrating shaft feeder.
  • a needle slat 3 In the immediate vicinity of the insertion opening 82 in the lower region of the housing 8 there is an end section of a needle slat 3.
  • This needle slat 3 also designed as a circumferential conveyor belt, is between a tensioning roller 9 located in the lower region of the housing 8 and one located in the upper region of the housing 8 Drive roller 10 arranged on increasing.
  • Another tensioning roller 11 is provided below the drive roller 10 at a distance from it the axes of the drive roller 10 and tension roller 11 are substantially vertically one above the other.
  • the drive roller 10 is connected via a belt 12 to a drive motor 6 which is arranged on the housing 8.
  • the roller 4 arranged in the ascending area of the needle slat 3 being a backing roll, which is responsible for the uniform fiber occupancy the width of the needle slat 3 ensures
  • the roller 5 arranged in the descending region of the needle slat 3 is a doctor roller which detaches the fibers from the needle slat and brings them into a filling shaft 7.
  • a guide wall 13 is provided below the tensioning roller 11 and is directed towards the filling chute 7, sloping downwards.
  • the still descending part of the needle lattice cloth 3 is delimited by a plate 14 following the guidance of the needle lattice cloth, which is guided around the tensioning roller 9 and ends in the vicinity of the insertion opening 82 of the housing 8.
  • the filling shaft 7 is formed from side walls, not shown here, as well as a rear wall designed as a vibrating wall 20 and a displaceable front wall 40.
  • the front wall 40 can be displaced via a handwheel or the like opening on the outside of the housing 8, which is connected to the front wall 40, so that the width of the filling shaft 7 can be adjusted manually.
  • the vibrating wall 20 of the shaft is also movable and generates the material compression by means of a back and forth movement.
  • the vibrating frequency is generated by rotating the shafts 22 mounted on a frame (not shown) with eccentrics 21 thereon, these eccentrics 21 are firmly attached to the vibrating wall 20.
  • the eccentric device is driven by a motor 30.
  • a take-off roller 50 is arranged at the outlet opening of the filling shaft 7 and deposits the compressed fiber material on a take-off table 70.
  • This take-off table 70 is designed as a circulating conveyor belt and guides the fiber material out of the housing 8.
  • An electronic scale 80 connects to the trigger table 70 and is used to determine the original weight. Carding machines 100 then pull the fiber material into a fleece processing system or the like for further processing.
  • FIG. 2 shows a detailed view of the filling shaft in the area of an eccentric device.
  • two positions of the front wall 40 are indicated, namely a position in which a minimum gap width of the filling shaft 7 is generated and a position in which a maximum width of the filling shaft 7 is generated.
  • Two extreme positions of the vibrating wall 20, which are determined by the stroke of the eccentric 21, are also shown schematically.
  • the eccentric 21, mounted on the fixed shaft 22, rotates in a housing 23 which is firmly connected to the vibrating wall 22. In its extreme positions, the eccentric 21 bears on opposing sliding plates 24, which are provided on the inner wall of the housing 23.
  • FIG. 3 shows an embodiment of a device according to the present invention.
  • the fiber flakes are in turn inserted from a material box 1 into the housing 8 via a batten cloth 2, which is designed as a circulating conveyor belt.
  • the floor slat 2 protrudes through an insertion opening 82 to below the tension roller 9 for the needle slat 3 into the housing 8.
  • the needle slat 3 is rising in the housing 8 arranged and guided around a drive roller 10 and a further tension roller 11 and the already mentioned tension roller 9.
  • contact plates 15, 16 are arranged at a distance from one another in the ascending area of the needle lattice cloth 3, against which the inside of the needle lath cloth 3 lies.
  • the circumferential movement of the needle slat 3 takes place via a drive motor 6 on the housing 8, which acts on the drive roller 10 through a belt 12.
  • the axes of drive roller 10 and tension roller 11 are arranged essentially in a vertical plane, the tension roller 11 being located below the drive roller 10.
  • a stripping roller 4 and a doctor roller 5 are arranged on both sides of the needle slat 3, which take over the same function as in the known device.
  • the fiber material removed from the needle lattice cloth 3 is guided into the filling shaft 7 by a guide wall 13. This is formed from side walls, not shown, and a vibrating wall 20 as the rear wall and a movable front wall 40.
  • the front wall 40 is fastened to a suspension 44 which is provided below the doctor roller 5 and in the immediate vicinity of a protective wall 45. It then runs, initially convexly curved, finally essentially vertically in the housing 8. In the region of the convex curvature and in the subsequent straight region of the front wall 40, a support 43 is provided against which the front wall 40 bears. A motor 42 acts on a linkage 46 which is connected to the support 43 and, together with the front wall 40, displaces it essentially pivotably. On the underside, the front wall 40 has a take-off roller 55 which is moved with it.
  • the guide wall 13 on the top of the filling shaft 7 rests on the one hand on a plate that the descending Surrounds the area of the needle slat 3 and ends in the area in which the bottom slat 2 and the needle slat 3 come closest.
  • the obliquely downwardly inclined guide wall 13 is on the other hand in the manner of a projection over the back wall 20, so that the guidance of the fiber flakes in the filling shaft 7 is ensured even with a maximum stroke of the vibrating wall 20.
  • Two eccentrics 25 are arranged at a distance from one another in the upper region or in the lower region of the vibrating wall 20.
  • the lower eccentric 25 is driven by a motor 30, the upper eccentric 25 is connected to a lifting motor 35 which can adjust the stroke of the eccentric 25 continuously.
  • a fill level sensor 32 is also arranged in the fill shaft 7, here in the upper region thereof. The exact position of the sensor 32 is determined by the desired fill level.
  • Fig. 4 the effect of the eccentric device with adjustable stroke is shown schematically.
  • 4a shows the maximum stroke, the vibrating wall 20 moving essentially parallel between the end positions of the vibrating wall defined by 26 and 27, respectively.
  • 4b shows the minimum stroke at which the vibrating wall 20 moves between the end positions 28 and 29.
  • 4a and 4b are assembled so that the position of the shaft 22 on which the eccentric 25 runs is the same.
  • the eccentric 25 is arranged in a housing 23 which is fixedly connected to the vibrating wall 20; in its extreme positions, the eccentric 25 bears against sliding plates 24.
  • FIG. 5 shows a detailed illustration of the device according to the invention in the exit region of the filling shaft 7.
  • the take-off roller 55 is also displaced, in addition to the change in the width of the shaft between the vibrating wall 20 and the front wall 40, the distance between the fixed removal roller 60 and the take-off roller 55 changed.
  • a minimum gap 57 is defined
  • the take-off roller 55 is in the position 58 and thus defines together with the fixed take-off roller 60 a gap 59 of maximum size.

Landscapes

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

Claims (7)

  1. Appareil pour produire un matériau fibreux ou similaire avec un poids prédéterminé, comprenant un dispositif transporteur pour amener des flocons de fibres dans une colonne de remplissage (7) qui comprend une paroi vibrante (20) s'étendant dans la direction verticale et une paroi mobile (40), dans la zone de sortie de la colonne de remplissage (7) étant disposé un cylindre d'évacuation fixe qui amène le matériau fibreux sortant à une table d'évacuation (70), un cylindre d'évacuation mobile (55) étant disposé en vis-à-vis et à distance du cylindre d'évacuation fixe (60) dans la zone de sortie de la colonne de remplissage (7), et le poids des fibres étant mesuré dans la zone de sortie de la colonne de remplissage et converti en un signal qui est exploité pour régler une grandeur agissant sur le poids des fibres, comme la fréquence de vibration de la paroi vibrante, caractérisé en ce que, entre les cylindres d'évacuation (55, 60), est implanté un capteur de pression (56) qui produit des signaux au moins pour déplacer le cylindre d'évacuation (55), pour moduler la fréquence de vibration de la paroi vibrante (20) et/ou pour déplacer la paroi (40).
  2. Appareil selon la revendication 1, caractérisé en ce que les axes des cylindres d'évacuation (55, 60) sont sensiblement parallèles.
  3. Appareil selon la revendication 1 ou 2, caractérisé en ce qu'une commande à excentrique (25, 30, 35) est prévue pour faire vibrer la paroi vibrante (20), la course d'excentrique produite par la commande à excentrique (25, 30, 35) étant réglable et/ou pouvant être régulée par le signal du capteur de pression (56).
  4. Appareil selon l'une des revendications 1 à 3, caractérisé en ce qu'un capteur de niveau (32) est implanté dans la colonne de remplissage (7).
  5. Appareil selon la revendication 3, caractérisé en ce que le capteur de niveau (32) est un barrage photo-électrique ou un barrage à ultrasons.
  6. Appareil selon l'une des revendications 1 à 5, caractérisé en ce que la paroi (40) peut être déplacée de manière progressive par un montant mobile (43) entre une première position, qui diminue la largeur de la colonne de remplissage (7), et une seconde position qui augmente la largeur de la colonne de remplissage (7).
  7. Appareil selon l'une des revendications 1 à 6, caractérisé en ce que le cylindre d'évacuation mobile (55) est monté sur la paroi (40).
EP92111415A 1991-08-30 1992-07-06 Appareil pour produire un matériau fibreux ou similaire avec un poids prédéterminé Expired - Lifetime EP0529246B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4128929A DE4128929C2 (de) 1991-08-30 1991-08-30 Vorrichtung zum Herstellen von Fasermaterial oder dergleichen mit vorgebbarem Vorlagegewicht
DE4128929 1991-08-30

Publications (2)

Publication Number Publication Date
EP0529246A1 EP0529246A1 (fr) 1993-03-03
EP0529246B1 true EP0529246B1 (fr) 1996-03-20

Family

ID=6439545

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92111415A Expired - Lifetime EP0529246B1 (fr) 1991-08-30 1992-07-06 Appareil pour produire un matériau fibreux ou similaire avec un poids prédéterminé

Country Status (4)

Country Link
US (1) US5297316A (fr)
EP (1) EP0529246B1 (fr)
DE (2) DE4128929C2 (fr)
ES (1) ES2086027T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2034058A1 (fr) 2007-09-06 2009-03-11 Oskar Dilo Maschinenfabrik KG Dispositif de compactage de flocons de fibres

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
US6421884B2 (en) * 2000-02-17 2002-07-23 Akiva Pinto Non-woven fabric forming system
DE10043338A1 (de) * 2000-09-02 2002-03-14 Truetzschler Gmbh & Co Kg Vorrichtung zum Betreiben einer Speiseeeinrichtung für Fasermaterial, z. B. Kastenspeiser
US20030043938A1 (en) * 2001-08-28 2003-03-06 Optix Networks Inc. Apparatus and method for periodic pattern detection
DE102005009157B4 (de) * 2005-02-25 2019-05-09 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine z.B. Karde, Krempel, Strecke o. dgl. zur Überwachung von Fasermaterial
DE102005009159B4 (de) * 2005-02-25 2021-08-12 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine zur Überwachung mindestens eines Faserbandes
DE102007039738A1 (de) * 2007-08-22 2009-03-26 Hubert Hergeth Rüttelregelung an Beschickungsschächten
IT1405427B1 (it) * 2010-12-16 2014-01-10 Ramina S R L Macchina per la formazione di una falda di fibre non tessute
DE102011103840A1 (de) * 2011-06-01 2012-12-06 Trützschler GmbH & Co Kommanditgesellschaft Vorrichtung an einer Spinnereivorbereitungsmaschine, z.B. Faserflockenspeiser, Karde, Reiniger o. dgl. zum Zu- und/oder Abfördern von Fasermaterial
CN106065501B (zh) * 2016-08-11 2019-03-12 成都市开悦化纤有限公司 一种自带选择性梳理功能的铺棉机
CN110592738B (zh) * 2019-10-21 2024-05-03 常熟市振泰无纺机械有限公司 气压振动给棉箱

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FR1405043A (fr) * 1964-08-25 1965-07-02 Vsesoiuzny Nautchno I I Textil Dispositif pour l'alimentation directe du coton aux cardes
CH437063A (de) * 1966-04-05 1967-05-31 Rieter Ag Maschf Vorrichtung zum Abscheiden von aufgelösten Faserflocken aus einem Transportluftstrom
DE2248522A1 (de) * 1972-10-03 1974-04-11 Hergeth Kg Masch Apparate Verfahren und vorrichtung zum direktspeisen von karden, krempeln u.dgl. mit spinngut
US3889319A (en) * 1973-10-23 1975-06-17 Crompton & Knowles Corp Method and system for producing blended textile fibrous materials
GB1517229A (en) * 1975-09-29 1978-07-12 Houget Duesberg Bosson Apparatus for regulating cards or other textile machines
DE2941612A1 (de) * 1979-10-13 1981-04-23 Zinser Textilmaschinen Gmbh, 7333 Ebersbach Strecke
US4387486A (en) * 1981-04-17 1983-06-14 Automatic Material Handling, Inc. Control system for fiber processing apparatus
US4403374A (en) * 1981-06-17 1983-09-13 Rando Machine Corporation Means for controlling density of non-woven fiber webs
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DE3336654A1 (de) * 1983-10-08 1985-04-25 Hergeth Hollingsworth GmbH, 4408 Dülmen Speisevorrichtung fuer karden, krempel u. dgl.
US4657444A (en) * 1985-07-24 1987-04-14 Hergeth Hollingsworth Gmbh Synchronized chute feed control system and method
DE3733632C2 (de) * 1987-10-05 1998-04-23 Truetzschler Gmbh & Co Kg Vorrichtung bei einer Karde oder Krempel zur Vergleichmäßigung des Faserbandes oder -vlieses
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2034058A1 (fr) 2007-09-06 2009-03-11 Oskar Dilo Maschinenfabrik KG Dispositif de compactage de flocons de fibres

Also Published As

Publication number Publication date
ES2086027T3 (es) 1996-06-16
DE4128929C2 (de) 1996-05-02
DE59205736D1 (de) 1996-04-25
EP0529246A1 (fr) 1993-03-03
DE4128929A1 (de) 1993-03-04
US5297316A (en) 1994-03-29

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