EP0394856B1 - Method and apparatus for removal of fibre flocks from bales of fibre - Google Patents

Method and apparatus for removal of fibre flocks from bales of fibre Download PDF

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Publication number
EP0394856B1
EP0394856B1 EP90107497A EP90107497A EP0394856B1 EP 0394856 B1 EP0394856 B1 EP 0394856B1 EP 90107497 A EP90107497 A EP 90107497A EP 90107497 A EP90107497 A EP 90107497A EP 0394856 B1 EP0394856 B1 EP 0394856B1
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EP
European Patent Office
Prior art keywords
take
rollers
removal
fibre
seen
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EP90107497A
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German (de)
French (fr)
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EP0394856A1 (en
Inventor
Daniel Hanselmann
Jost Aebli
Walter Schlepfer
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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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
    • D01G7/00—Breaking or opening fibre bales
    • D01G7/06—Details of apparatus or machines
    • D01G7/12—Framework; Casings; Coverings; Grids
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G7/00—Breaking or opening fibre bales
    • D01G7/06—Details of apparatus or machines
    • D01G7/10—Arrangements for discharging fibres

Definitions

  • the invention relates to a method and an apparatus for removing fiber flakes from fiber bales arranged in series, e.g. Cotton or synthetic fiber bales and the like, by means of a removal member traveling over the fiber bales with at least two rotating removal rollers according to the preamble of the first method and first device claim.
  • a method or a device of this type is known from DE-U-87 12 308.8 described in more detail below.
  • the fiber bales can be displaced on conveyor belts against the removal member according to the description of the utility model, so that the fiber removal member always flakes out of the same displacement area sloping surface of the fiber bale.
  • An improvement in the abovementioned removal performance consists in the possibility of having both removal rollers rotate in the same direction in the same direction of travel, which however requires that the return direction of the rollers is given an opposite direction of rotation or that the removal member is lifted from the surface, so that fiber flakes only in a direction of travel can be triggered.
  • the increase in output is somewhat problematic even with a rapid return trip, since, depending on the length of the bale rows, a time interval must be taken into account during which no fiber flakes are released.
  • the solution of the task procedurally is that the depth of penetration of the rollers relative to the to be removed Surface of the bale is different.
  • the solution is that the rollers are also positionally adjustable relative to the removal surface in such a way that the depth of penetration of the rollers in relation to the surface to be removed is different in front of the removal member.
  • the advantages of the invention are that both due to the different depth of penetration of the rollers Flakes can be removed because, as is known, the flake size increases with each penetration, which is not always desirable.
  • a double or multiple roller arrangement can be used to achieve a double or multiple output compared to a single roller arrangement with the same depth of penetration, or it is possible to reduce the flake size by reducing the depth of penetration for a given output.
  • Another advantage of the positionally adjustable arrangement of the rollers is that with simultaneous opening or closing. Movement of the removal member during the forward movement along the row of bales can be easily removed obliquely without different penetration depth of the rollers. It is not absolutely necessary that both rollers rotate in the same direction of rotation, but if the aforementioned increase in performance or reduction of the flake size is not necessary, the rollers can rotate according to the prior art in two different directions of rotation in order to reverse the rollers in the outward direction - To avoid moving the removal device.
  • a device 1 for removing fiber flakes comprises a stand 2, which travels along a bale row 4 by means of wheels 3 on rails (not shown), in the direction A shown in FIG. 1 and in the direction B shown in FIG. 2.
  • a removal member 5 is arranged to move up and down on guide rails (not shown) in accordance with the arrows C and D.
  • the removal member 5 has two rotating removal rollers 6a and 6b, which are known, for example, from EP-A-00 58 781. It is known from this document that these removal rollers consist of a series of toothed disks with gaps between the disks and that grate bars 7 (see FIG. 11) are provided in the gaps, which can either be moved as shown in FIG. 5 or as shown in FIG. 6 shown are firmly arranged. The attachment of the grate bars will be explained later.
  • the removal rollers 6a and 6b are each in a roller carrier 8 and 9 rotatably and drivably mounted.
  • This roller carrier 8, respectively. 9 are in turn guided in the removal member 5 by means of slide rails (not shown), movable up and down according to the arrow directions E and F, this movement being carried out by means of a servomotor drive 10 (FIGS. 1 and 2).
  • a servomotor drive 10 (FIGS. 1 and 2).
  • Such a drive comprises a geared motor 12 with a rotation pulse generator 13 attached to the removal member 5 by means of a bracket 11 (FIG. 1).
  • the output shaft of the geared motor is at the same time a spindle 14 which is guided in a spindle sleeve 15.
  • the spindle sleeve is in turn on the roller carrier 8, respectively. 9 attached.
  • a suction channel 19 resp. 20 with a minimal play between the respective suction channel and the outlet channel 18.
  • the outlet channels 18 and the suction channels 19, respectively. 20 extend at least over the entire length of the removal rollers 6a, respectively. 6b, that is, cover these removal rollers.
  • the suction channels 19 and 20 are connected to a suction pipe 21, which in turn is connected to a vacuum source (not shown) in order to generate the fiber flock conveying air flow necessary in the vicinity of the removal rollers for the suction of the fiber flakes.
  • the suction tube is designed to be increasingly widening in such a way that it has a larger cross-section in the direction towards the vacuum generator, in order to extract an essentially uniform amount of air over the entire length of the removal rollers.
  • the vacuum source is a fan (not shown) and is known per se from practice and is therefore not explained in more detail.
  • the removal member 5 could be modified such that not the entire removal member can be moved up and down, but only the roller carriers 8 and 9. Accordingly, the outlet channel 18 and the suction channel 19 or. 20 should be designed telescopically, and the spindle 14 would have to undergo a corresponding extension.
  • the removal member 5 as such would be arranged stationary in such a variant.
  • the grate bars 7 are also a component of the roller carrier 8 or in the case of the latter variant. 9, these grate bars, as shown in FIG. 5 or as shown in FIG. 6, being attachable.
  • FIGS. 3, 4, 6 and 7 show a variant according to the invention, in which the same elements of FIGS. 1 and 2 have the same reference symbols.
  • This variant shows a device 1.1 for removing fiber flakes with the stand 2, but with a removal member 30, in which the rotatable and driven removal rollers 6a, respectively. 6b are arranged stationary with respect to the removal member.
  • the removal member 30 is pivotally mounted as a whole by means of a hollow pivot axis 31, which rotates about an axis of rotation 39.
  • the pivot axis 31 is received by a rotary bearing 40 (FIG. 7) provided in a sliding carriage 40.
  • the means for moving the slide 40 up and down are described in EP Application No. 193,647.
  • grate bars 32 are fastened either in the manner shown in FIG. 5 or in the manner shown in FIG.
  • the removal member 30 is pivoted about the axis of rotation 39 by means of an actuator drive 33 (FIG. 6).
  • This comprises a geared motor 34 which is pivotally attached to a sliding element 35 which can be moved up and down with the removal member, in accordance with the directions of movement C and D. This is guided through a stationary guide tube 41.
  • the sliding element 35 is carried along for the movements in the aforementioned directions by a driver 42 which is fixedly arranged on the one hand on the sliding element 35 and on the other hand on the sliding carriage 40.
  • the output shaft of the geared motor is provided as a spindle 36 which is guided in a spindle sleeve 37.
  • the spindle sleeve is fastened by means of a pivot bearing 38, which can be pivoted to the removal member 30.
  • the removal member 30 for guiding the air flow conveying the fiber flakes also includes an air duct 44 which, according to its functions, extends over at least the entire length of the removal rollers 6a and 6a, respectively. 6b extends and is connected to a suction pipe 45 which, in turn, is connected to a vacuum source (not shown) in order to generate the air flow mentioned.
  • FIG. 5 shows a further embodiment variant of the embodiment shown with EP-A-01 99 041, which are arranged to be movable, so that in connection with FIG. 5 only the essential features are repeated, but with new characteristics. Furthermore, the elements corresponding to FIG. 6 are provided with the same reference symbols.
  • the grate bars 32.1 shown in Figure 5 are attached to side members 50, which in turn by means of a pivotally attached lifting mechanism relative to the removal rollers 6a and. 6b are movable.
  • the lifting mechanism comprises the gear stop motors 51 shown in the aforementioned European patent application and the threaded spindles 52.
  • the spindles 52 are guided in spindle sleeves 53 which are pivotally connected to the longitudinal members 50.
  • two lifting devices are provided per longitudinal member 50.
  • the gear stop motors are equipped with rotation pulse generators 54, with which the bearings of the removal grates 32.1 are in a control (not shown) can be specified.
  • Such controls are known per se.
  • removal member 30.1 of FIG. 5 can be provided in the same way with a pivot mechanism shown in FIG. 6 and can be pivoted in the same way about the axis of rotation 39, without mentioning this again in detail.
  • FIGS. 7 to 10 show various operating variants which can be carried out with the devices shown hitherto.
  • FIGS. 8 and 9 show the possibility of using the removal member 30 (FIG. 6) and 30.1 (FIG. 5).
  • the pivoting angle ⁇ .1 of the removal rollers 6a and 6b resulting from the pivoting relative to the surface of the fiber bales 4 of this removal member has the same size as the pivoting angle ⁇ .1 of the grate bars 32.
  • the angle ⁇ .1 is formed by an imaginary plane 56, which lies against the circumference of the removal rollers 6a and 6b, and an imaginary plane 55, which is parallel to the bale surface, while the angle ⁇ .1 is formed by plane 55 and an imaginary plane 57, which contains the lower surface of the grate bars that dips into the bale surface.
  • the swivel angle ⁇ .1 is generally chosen such that the depth of penetration T.1 of the removal roller 6a is approximately half the depth of penetration T.2 of the removal roller 6b.
  • the penetration depth is understood to mean the degree of penetration of the respective removal roller relative to the bale surface in front of the removal member 30. This applies whether the stand moves in direction A (FIGS. 3 and 8) or in direction B (FIGS. 4 and 9).
  • FIG. 9 shows the above-mentioned, wherein for the direction of travel B, instead of the angle ⁇ .1, the angle is marked with ⁇ .2 and instead of the angle ⁇ .1, the angle with ⁇ .2.
  • the suspension of the grate bars 32.1 of FIG. 5 is combined with a pivotable removal member, according to the removal member 30 of FIG. 6, it is possible to adjust the angles .alpha.1 or. ⁇ .2 and ⁇ .1 respectively. ⁇ .2 ( Figure 8) to choose differently.
  • FIG. 10 shows an example with the use of the removal member 30.1, that is to say without a pivoting mechanism, that is to say only with an adjustment possibility for the grate bars 32.1, so that the difference in the penetration depth T.3 between the removal roller 6a and the removal roller 6b by adjusting the grate bars 32.1 with the angle ⁇ .3 for the direction of travel A and with the angle ⁇ .4 for the direction of travel B is generated.
  • the directions of rotation G and H or K and L can be selected.
  • FIG. 11 shows the use of the removal member 5 according to FIGS. 1 and 2, additionally schematically Grate bars 7 shown, but only for the direction of travel A.
  • the penetration depths T.1 and T.2 can be selected individually and can accordingly take place alternately in the return trip B (not shown in FIG. 10), provided flakes are removed in both directions of travel.
  • the arrow B shown with double dashed lines and the row of balls 4 shown with dashed lines indicate a variant which is possible with all removal devices, namely that the removal devices 5 and. 30 resp. 30.1 are lifted away from the bale surface and always have the same inclination. In this way, fiber flakes are always removed from the bales only in direction A.
  • This variant can also be used if it is intended to always remove the mixture from the same side within the fiber bale row.
  • a fixed inclined position of the removal rollers can also be selected for such a variant.
  • FIG. 12 shows a removal member 30.2 in which the grate bars 32.1 are arranged to be adjustable in the same way as in FIG. 5, which is why the same elements are provided with the same reference numerals as in FIG. 5. Furthermore, the same or similar elements as in FIG 5 provided with the same reference numerals.
  • the removal rollers 6a and 6b for the oblique removal according to the angle ( ⁇ ) shown in FIGS. 1 to 4 and for the removal with different penetration depths T.1 and T.2 also according to FIGS. 1 to 4
  • the removal rollers are rotated at both end ends in a respective bearing beam 60 (only one shown in FIG. 12) and driven by motors 61 (FIG. 13).
  • the Bearing beams 60 are in turn pivotally mounted in the middle, analogously to the balance beam, by means of a corresponding one of the two pivot shafts 62, so that the removal rollers 6a and 6b can be pivoted synchronously in the arrow directions L or M by means of the pivot shafts 62.
  • the bearing beams 60 are arranged in a rotationally fixed manner on the respective swivel shaft.
  • the swivel shafts 62 are in turn each rotatably mounted in the housing of the removal member 30.2 and secured against axial displacement and are each fixedly connected to a swivel arm 63 (indicated by dash-dotted lines in FIG. 12).
  • Each swivel arm 63 is in turn connected to a displacement mechanism 64, which comprises a spindle sleeve 65 pivotably connected to the swivel arm 63, a spindle 66 guided therein and a stepper motor 67 driving this spindle.
  • the stepping motor in turn is pivotally connected to the housing of the removal member 30.2 by means of the pivot axis 68.
  • the grate bars 32.1 can also be raised or lowered on one side or on both sides with the device already described for FIG. 5, as viewed in FIG. 12, by means of the spindles 52, so that the position of the grate bars 32.1 can be adapted to the position of the removal rollers 6a and 6b as required.
  • the stepper motor 67 operates in accordance with the stepper motor 34, respectively. 51, that is, it is equipped with everything necessary, but known per se, to assume the exact position of the removal rollers 6a and 6b according to the control (not shown).
  • FIG. 14 shows the same pivotability of the removal rollers 6a and 6b with the same elements, which is why the same elements are provided with the same reference symbols and are therefore not described again.
  • the grate bars 32.2 are fastened to side walls 69 and 70, which in turn are connected to the bearing bars 60 (not shown), so that the side walls 69 and 70 are simultaneously connected to the bearing bar 60 and thus also to the grate bars 32.2 can be pivoted in the pivoting directions L and M.
  • the side walls 69 and 70 are each connected to end walls (not shown) on both end faces of the removal rollers 6a and 6b, so that the side walls 69 and 70 together with the end walls form a channel around the removal rollers 6a and 6b.
  • this channel is covered by an exhaust channel 71, which in turn opens into the suction pipe 39.
  • the side walls 69 and 70 are curved in accordance with the radii R.1 and R.2.
  • the radii R.1 and R.2 intersect in the axis of rotation (not shown) of the pivot axis 62.
  • the overlapping channel 71 is adapted to the side walls 69 and 70 with respect to the curved shape and only by so much larger than the channel located below that between the side walls 69 and 70 and the walls of the overlapping channel 71 there is only one gap with the gap width S of about 1 mm.
  • This gap can be selected to be smaller or larger as required, since so-called false air is sucked in through this gap, which, however, may be useful for conveying the fiber flakes in the channel 71.
  • the gap S should be at least so large that the side walls 69 and 70 do not rub against the inner wall of the overlapping channel 71.
  • FIG. 15 shows the bearing beams 60 provided at both ends of the removal roller 6a and 6b and the motor 61 provided per roller.
  • FIGS. 16 and 17 show a further variant of the possibility of arranging the removal rollers 6a and 6b so that they can be displaced for the described oblique removal.
  • the shaft 76 of the removal roller 6a is mounted at its two ends in an eccentric bearing 72 and the shaft 76 of the removal roller 6b is rotatably and driveably supported at its two ends in an eccentric bearing 73.
  • the eccentric bearings 72 are rotatably mounted in a bearing shell 74 and the eccentric bearings 73 in a bearing shell 75, the bearing shells 74 and 75 being fixedly arranged on the housing of the removal member 30.4.
  • FIG. 16 only a pair of the eccentric bearings and bearing shells is indicated by dash-dotted lines, while in FIG. 17 the bearing shells 74 are visible at both ends of the removal roller 6a and the bearing shells 75 are only indicated in a hint.
  • the displacement device 64 contains the spindle sleeve 65, which in this variant is pivotally connected to a connecting rod 77.
  • the connecting rod 77 in turn is pivotally connected to the eccentric bearing 72 and 73 by means of the pivot pin 78.
  • the removal rollers 6a and 6b are displaced when the stepping motor 67 is actuated, either upwards according to the arrow direction R or downwards according to the arrow direction S.
  • the eccentric bearings 72 and 73 it is such that when the removal roller 6a is shifted upwards in the R direction, the removal roller 6b is shifted downwards in the S direction by the same amount, so that the removal rollers are also adjusted in this way with this device that they can be operated with the same or different penetration depth and for inclined removal according to the angle ( ⁇ ) when removing the bale surface.
  • the penetration depth T.1 resp. T.2 can also be changed accordingly with increasing fiber bale density.
  • the controller (not shown) is designed in such a way that the different density of the fiber bales due to the inclined removal surface is taken into account in the aforementioned sense.
  • the idea of the invention and thus the embodiments shown can also be carried out with three or more removal rollers, and the removal member can also be used without grate bars.

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  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Description

Die Erfindung bezieht sich auf ein Verfahren und eine Vorrichtung zum Abtragen von Faserflocken aus in Reihe angeordneten Faserballen, z.B. Baumwoll- oder Kunstfaserballen und dergleichen, mittels einem über die Faserballen fahrenden Abtragorgan mit mindestens zwei rotierenden Abtragwalzen gemäß dem Oberbegriff des ersten Verfahrens- und ersten Vorrichtungsanspruches. Ein Verfahren bzw. eine Vorrichtung dieser Art ist aus der unten näher beschriebenen DE-U-87 12 308.8 bekannt.The invention relates to a method and an apparatus for removing fiber flakes from fiber bales arranged in series, e.g. Cotton or synthetic fiber bales and the like, by means of a removal member traveling over the fiber bales with at least two rotating removal rollers according to the preamble of the first method and first device claim. A method or a device of this type is known from DE-U-87 12 308.8 described in more detail below.

Aus der deutschen Patentschrift DE-C-33 34 222 ist eine Vorrichtung mit einem Abtragorgan zum Abtragen von Faserballen mit zwei rotierenden Abtragwalzen bekannt, bei welcher für das Abtragen der Faserflocken das Abtragorgan über die Faserballenoberfläche hin und her gefahren wird und bei jeder Überfahrt mit einer vorgegebenen Eindringtiefe in die Faserballen eindringt, um den Abtragwalzen Gelegenheit zu geben, Faserflocken aus der Oberfläche zu lösen, welche anschließend einem pneumatischen Förderschacht übergeben werden. Bei dieser Vorrichtung erfolgt die Abtragung in einer horizontalen Ebene.From the German patent DE-C-33 34 222 a device with a removal member for removing fiber bales with two rotating removal rollers is known, in which the removal member is moved back and forth over the fiber bale surface for the removal of the fiber flakes and with each crossing with a predetermined penetration depth penetrates into the fiber bales in order to give the removal rollers the opportunity to detach fiber flakes from the surface, which are then transferred to a pneumatic conveyor shaft. With this device, the removal takes place in a horizontal plane.

Im weiteren ist aus der DE-U-87 12 308.8 bekannt, daß mit einem vorbeschriebenen Abtragorgan mit zwei rotierenden Abtragwalzen, anstelle der horizontalen Überfahrt der Abtragwalzen für das Herauslösen von Faserflocken aus der Ballenoberfläche, das Abtragorgan in einer zur Horizontalen geneigten Verschieberichtung Faserflocken aus der entsprechend geneigten Oberfläche der Faserballen Faserflocken herauslöst.Furthermore, it is known from DE-U-87 12 308.8 that, with a removal device as described above, with two rotating removal rollers, instead of the horizontal passage of the removal rollers for removing fiber flakes from the surface of the bale, the removal element in a direction of displacement inclined to the horizontal from the fiber flakes according to the inclined surface of the fiber bale releases fiber flakes.

Im Gegensatz zu dem in der DE-C-33 34 222 beschriebenen System, in welchen die Faserballen stationär angeordnet sind, sind die Faserballen gemäß Beschreibung des Gebrauchsmusters auf Förderbändern gegen das Abtragorgan hin verschiebbar, so daß das Faserabtragorgan immer im selben Verschiebebereich Flocken aus der geneigten Oberfläche der Faserballen abträgt.In contrast to the system described in DE-C-33 34 222, in which the fiber bales are arranged in a stationary manner, the fiber bales can be displaced on conveyor belts against the removal member according to the description of the utility model, so that the fiber removal member always flakes out of the same displacement area sloping surface of the fiber bale.

Aus der Praxis wie auch aus EP-A-0 326 913, welche einen Stand der Technik nach Artikel 54(3) EPÜ darstellt, ist es bekannt, daß bei solchen Doppelwalzen-Ballenöffnern die Abtragwalzen gegenläufig drehen, wobei jeweils die in Fahrtrichtung gesehen vordere Abtragwalze im sogenannten Gleichlauf mit der Fahrtrichtung dreht, um die Faserflocken in diesem Gleichlauf aus der Oberfläche zu lösen. Die in Fahrtrichtung gesehen hintere Walze dreht entweder in der gleichen Drehrichtung wie die vordere Walze oder in entgegengesetzter Drehrichtung, d.h. im sogenannten Gegenlauf, und löst dann im Gegenlauffrässystem Faserflocken aus derselben Oberfläche.From practice as well as from EP-A-0 326 913, which represents a prior art under Article 54 (3) EPC, it is known that in such double-roller bale openers the removal rollers rotate in opposite directions, the front rollers in the direction of travel Removal roller rotates in the so-called synchronization with the direction of travel in order to detach the fiber flakes from the surface in this synchronization. The rear roller seen in the direction of travel either rotates in the same direction of rotation as the front roller or in the opposite direction, i.e. in the so-called counter-rotation, and then removes fiber flakes from the same surface in the counter-rotation milling system.

Es ist nun jedoch bekannt, daß das Faserflocken Herauslösen in der vorgenannten Gegenlaufrichtung einen schlechteren mengenmäßigen Auflösewirkungsgrad aufweist als eine Walze, welche in Gleichlaufrichtung dreht.However, it is now known that the fiber flake detachment in the aforementioned counter-direction has a poorer quantitative dissolving efficiency than a roller which rotates in the same direction.

Ebenfalls ist eine Abtragorgan mit einer Auflösewalze bekannt, deren Drehrichtung reversierbar ist, so daß die Auflösewalze jeweils in Gleichlaufrichtung drehbar ist.Also known is a removal member with an opening roller, the direction of rotation of which is reversible, so that the opening roller can be rotated in the same direction.

Mit der vorgenannten Doppelwalzenanordnung des Standes der Technik nach der DE-C-33 34 222 besteht zwar die Möglichkeit, im Hin- und Hergang des Abtragorganes Flocken auszulösen, ohne die Abtragwalzen in ihrer Drehrichtung ändern zu müssen, weil jeweils die in Fahrtrichtung gesehen vordere Walze in Gleichlaufrichtung dreht. Eine Erhöhung der Abtragleistung kann im Vergleich mit dem genannten Einwalzen-Abtragorgan jedoch infolge des schlechten mengenmäßigen Wirkungsgrades der gegenläufigen Abtragwalze kaum erreicht werden.With the aforementioned double-roller arrangement of the prior art according to DE-C-33 34 222, there is the possibility of triggering flakes in the back and forth of the removal member without having to change the removal rollers in their direction of rotation, because each seen in the direction of travel front roller rotates in the same direction. However, an increase in the removal rate compared to the single-roll removal member mentioned can hardly be achieved due to the poor quantitative efficiency of the opposing removal roller.

Eine Verbesserung der vorgenannten Abtragleistung besteht in der Möglichkeit, beide Abtragwalzen pro Fahrtrichtung in Gleichlaufrichtung drehen zu lassen, was jedoch bedingt, daß für die Rückfahrt der Walzen eine entgegengesetzte Drehrichtung gegeben wird oder daß das Abtragorgan von der Oberfläche abgehoben wird, so daß Faserflocken nur in einer Fahrtrichtung ausgelöst werden können. Die Leistungserhöhung ist jedoch im letztgenannten Falle selbst mit einer raschen Rückfahrt etwas problematisch, da je nach Länge der Ballenreihen ein Zeitintervall in Kauf genommen werden muß, während welchem keine Faserflocken herausgelöst werden.An improvement in the abovementioned removal performance consists in the possibility of having both removal rollers rotate in the same direction in the same direction of travel, which however requires that the return direction of the rollers is given an opposite direction of rotation or that the removal member is lifted from the surface, so that fiber flakes only in a direction of travel can be triggered. However, the increase in output is somewhat problematic even with a rapid return trip, since, depending on the length of the bale rows, a time interval must be taken into account during which no fiber flakes are released.

Ein weiteres Mittel, um die Leistung zu erhöhen, besteht bekannterweise darin, die Walzenlänge entsprechend zu vergrössern, und zwar mit Abtragorganen, welche eine einzige Walze oder zwei Walzen aufweisen. Der Nachteil einer solchen Maßnahme besteht jedoch in der weiten Ausladung des Abtragorganes am fahrbaren, das Abtragorgan aufnehmenden Ständer, was eine mechanische höhere Belastung des ganzen Systems ergibt.Another means of increasing the performance is known to be to increase the length of the roll accordingly, with removal elements which have a single roll or two rolls. The disadvantage of such a measure, however, consists in the wide overhang of the removal member on the mobile stand receiving the removal member, which results in a higher mechanical load on the entire system.

Es ist deshalb Aufgabe der Erfindung, die Abtragleistung, ohne Abhängigkeit von der Länge der Abtragewalzen zu erhöhen, und zwar beim schrägen Abtragen gemäß DE-GM-87 12 308 oder wahlweise bei gegebener Abtragleistung die Flockengröße zu verringern.It is therefore an object of the invention to increase the material removal rate without depending on the length of the removal rollers, specifically in the case of oblique removal in accordance with DE-GM-87 12 308 or optionally to reduce the flake size at a given removal rate.

Die Lösung der Aufgabe besteht verfahrensmäßig darin, daß die Eindringtiefe der Walzen relativ zur abzutragenden Oberfläche der Ballen unterschiedlich ist. Vorrichtungsmäßig besteht die Lösung darin, daß die Walzen außerdem derart gegenüber der Abtragfläche lageverstellbar sind, daß die Eindringtiefe der Walzen in bezug auf die abzutragende Oberfläche vor dem Abtragorgan unterschiedlich ist.The solution of the task procedurally is that the depth of penetration of the rollers relative to the to be removed Surface of the bale is different. In terms of the device, the solution is that the rollers are also positionally adjustable relative to the removal surface in such a way that the depth of penetration of the rollers in relation to the surface to be removed is different in front of the removal member.

Vorteilhafte Ausführungsformen sind in den entsprechenden, abhängigen Ansprüchen aufgeführt.Advantageous embodiments are set out in the corresponding dependent claims.

Die Vorteile der Erfindung bestehen darin, daß einerseits durch die unterschiedliche Eindringtiefe der Walzen beide Flocken herausgelöst werden können, da bekanntlich mit zunehmender Eindringtiefe pro Ueberfahrt die Flockengrösse vergrössert wird, was nicht immer erwünscht ist. Anders ausgedrückt, kann mit einer Doppel- oder Mehrfachwalzenanordnung eine gegenüber einer Einfachwalzenanordnung, bei gleicher Eindringtiefe, Doppel- oder Mehrfachleistung erbracht werden, oder es besteht die Möglichkeit, bei gegebener Leistung durch Verringerung der Eindringtiefe die Flockengrösse zu verringern.The advantages of the invention are that both due to the different depth of penetration of the rollers Flakes can be removed because, as is known, the flake size increases with each penetration, which is not always desirable. In other words, a double or multiple roller arrangement can be used to achieve a double or multiple output compared to a single roller arrangement with the same depth of penetration, or it is possible to reduce the flake size by reducing the depth of penetration for a given output.

Ein weiterer Vorteil der vorrichtungsmässig lageverstellbaren Anordnung der Walzen besteht darin, dass bei gleichzeitigem Auf- resp. Abbewegung des Abtragorganes während der Vorwärtsbewegung entlang der Ballenreihe auch ohne unterschiedliche Eindringtiefe der Walzen ganz einfach schräg abgetragen werden kann. Dabei ist es nicht absolut notwendig, dass beide Walzen in derselben Drehrichtung drehen, sondern, wenn die vorgenannte Leistungserhöhung oder Verkleinerung der Flockengrösse nicht erforderlich ist, können die Walzen gemäss Stand der Technik in zwei verschiedenen Drehrichtungen drehen, um das Reversieren der Walzen bei der Hin- und Herbewegung des Abtragorganes zu vermeiden.Another advantage of the positionally adjustable arrangement of the rollers is that with simultaneous opening or closing. Movement of the removal member during the forward movement along the row of bales can be easily removed obliquely without different penetration depth of the rollers. It is not absolutely necessary that both rollers rotate in the same direction of rotation, but if the aforementioned increase in performance or reduction of the flake size is not necessary, the rollers can rotate according to the prior art in two different directions of rotation in order to reverse the rollers in the outward direction - To avoid moving the removal device.

Die Erfindung wird im Folgenden anhand von lediglich Ausführungswege darstellenden Zeichnungen näher erläutert. Es zeigt:

Figur 1
eine erfindungsgemässe Abtragvorrichtung mit einem erfindungsgemässen Abtragorgan, halbschematisch und in Ansicht dargestellt,
Figur 2
die Vorrichtung von Figur 1 in entgegengesetzter Fahrtrichtung zur Fahrtrichtung von Figur 1,
Figur 3
eine Abtragvorrichtung mit einem weiteren erfindungsgemässen Abtragorgan, ebenfalls schematisch und in Ansicht dargestellt,
Figur 4
die Vorrichtung von Figur 3 in entgegengesetzter Fahrtrichtung zur Fahrtrichtung von Figur 1 gezeigt,
Figur 5
ein weiteres erfindungsgemässes Abtragorgan einer Abtragvorrichtung, halbschematisch und in Ansicht gezeigt,
Figur 6
das Abtragorgan der Abtragvorrichtung der Figuren 3 und 4, halbschematisch, detaillierter und vergrössert dargestellt,
Figur 7
die Abtragvorrichtung der Figuren 3 und 4 in Blickrichtung M (Figur 3) gesehen, mit zusätzlichen Details dargestellt,
Figur 8 bis 11
schematische Darstellungen der Ausführungsschritte des erfindungsgemässen Verfahrens,
Figur 12
ein erfindungsgemässes Abtragorgan, halbschematisch dargestellt,
Figur 13
eine Abtragvorrichtung mit dem Abtragorgan von Figur 12, in Blickrichtung M (Figur 12) gesehen.
Figur 14
ein erfindungsgemässes Abtragorgan, halbschematisch dargestellt,
Figur 15
eine Abtragvorrichtung mit dem Abtragorgan, von Figur 14 in Blickrichtung M (Figur 14) gesehen.
Figur 16
ein erfindungsgemässes Abtragorgan, halbschematisch dargestellt.
Figur 17
eine Abtragvorrichtung mit dem Abtragorgan von Figur 16, in Blickrichtung M (Figur 16) gesehen.
The invention is explained in more detail below on the basis of drawings which only show execution paths. It shows:
Figure 1
a removal device according to the invention with a removal member according to the invention, shown semi-schematically and in view,
Figure 2
the device of Figure 1 in the opposite direction to the direction of Figure 1,
Figure 3
a removal device with a further removal member according to the invention, likewise shown schematically and in view,
Figure 4
3 shows the device of FIG. 3 in the opposite direction of travel to the direction of travel of FIG. 1,
Figure 5
another removal device according to the invention of a removal device, shown semi-schematically and in view,
Figure 6
the removal member of the removal device of Figures 3 and 4, shown semi-schematically, in more detail and enlarged,
Figure 7
3 and 4 seen in viewing direction M (FIG. 3), shown with additional details,
Figure 8 to 11
schematic representations of the execution steps of the method according to the invention,
Figure 12
a removal device according to the invention, shown semi-schematically,
Figure 13
a removal device with the removal member of Figure 12, seen in viewing direction M (Figure 12).
Figure 14
a removal device according to the invention, shown semi-schematically,
Figure 15
a removal device with the removal member, seen from Figure 14 in viewing direction M (Figure 14).
Figure 16
a removal device according to the invention, shown semi-schematically.
Figure 17
a removal device with the removal member from Figure 16, seen in viewing direction M (Figure 16).

Eine Vorrichtung 1 zum Abtragen von Faserflocken umfasst einen Ständer 2, welcher mittels Rädern 3 auf Schienen (nicht gezeigt) eine Ballenreihe 4 entlang fährt, und zwar in der in Figur 1 gezeigten Richtung A und in der in Figur 2 gezeigten Richtung B. Am Ständer 2 ist ein Abtragorgan 5 auf Führungsschienen (nicht gezeigt) auf und ab, entsprechend den Pfeilen C und D, bewegbar angeordnet.A device 1 for removing fiber flakes comprises a stand 2, which travels along a bale row 4 by means of wheels 3 on rails (not shown), in the direction A shown in FIG. 1 and in the direction B shown in FIG. 2. On the stand 2, a removal member 5 is arranged to move up and down on guide rails (not shown) in accordance with the arrows C and D.

Das Abtragorgan 5 weist zwei rotierende Abtragwalzen 6a und 6b auf, welche beispielsweise aus der EP-A-00 58 781 her bekannt sind. Aus diesem Dokument ist bekannt, dass diese Abtragwalzen aus einer Aneinanderreihung von Zahnscheiben mit Zwischenräumen zwischen den Scheiben bestehen und dass in den Zwischenräumen Roststäbe 7, (siehe Figur 11) vorgesehen sind, die entweder wie in Figur 5 gezeigt bewegbar, oder wie in Figur 6 gezeigt fest angeordnet sind. Die Befestigung der Roststäbe wird später noch erläutert.The removal member 5 has two rotating removal rollers 6a and 6b, which are known, for example, from EP-A-00 58 781. It is known from this document that these removal rollers consist of a series of toothed disks with gaps between the disks and that grate bars 7 (see FIG. 11) are provided in the gaps, which can either be moved as shown in FIG. 5 or as shown in FIG. 6 shown are firmly arranged. The attachment of the grate bars will be explained later.

Die Abtragwalzen 6a und 6b sind je in einem Walzenträger 8 resp. 9 dreh- und antreibbar gelagert.The removal rollers 6a and 6b are each in a roller carrier 8 and 9 rotatably and drivably mounted.

Diese Walzenträger 8 resp. 9 sind ihrerseits im Abtragorgan 5 mittels Gleitschienen (nicht gezeigt), gemäss den Pfeilrichtungen E und F auf und ab bewegbar geführt, wobei diese Bewegung mittels eines Stellenmotorantriebes 10 (Figur 1 und 2) durchgeführt wird. Ein solcher Antrieb umfasst einen am Abtragorgan 5 mittels einer Konsole 11 (Figur 1) befestigten Getriebemotor 12 mit einem Umdrehungsimpulsgeber 13. Die Abgangswelle des Getriebemotors ist gleichzeitig eine Spindel 14, welche in einer Spindelhülse 15 geführt ist. Die Spindelhülse ihrerseits ist am Walzenträger 8, resp. 9 befestigt. Die Walzenträger 8, resp. 9 umfassen im weiteren je ein Leitblech 16 und 17 (Figur 2), welche nach oben, mit Blick auf die Figuren gesehen, in einen Austrittskanal 18 münden. In diesen Austrittskanal greift ein Absaugkanal 19 resp. 20 mit einem minimalen Spiel zwischen dem jeweiligen Absaugkanal und dem Austrittskanal 18 ein. Die Austrittskanäle 18 sowie die Absaugkanäle 19 resp. 20 reichen mindestens über die gesamte Länge der Abtragwalzen 6a resp. 6b, das heisst überdecken diese Abtragwalzen.This roller carrier 8, respectively. 9 are in turn guided in the removal member 5 by means of slide rails (not shown), movable up and down according to the arrow directions E and F, this movement being carried out by means of a servomotor drive 10 (FIGS. 1 and 2). Such a drive comprises a geared motor 12 with a rotation pulse generator 13 attached to the removal member 5 by means of a bracket 11 (FIG. 1). The output shaft of the geared motor is at the same time a spindle 14 which is guided in a spindle sleeve 15. The spindle sleeve is in turn on the roller carrier 8, respectively. 9 attached. The roller carrier 8, respectively. 9 each further comprise a guide plate 16 and 17 (Figure 2), which open upwards, seen with a view of the figures, into an outlet channel 18. In this outlet channel, a suction channel 19 resp. 20 with a minimal play between the respective suction channel and the outlet channel 18. The outlet channels 18 and the suction channels 19, respectively. 20 extend at least over the entire length of the removal rollers 6a, respectively. 6b, that is, cover these removal rollers.

Die Absaugkanäle 19 und 20 sind an ein Absaugrohr 21 angeschlossen, welches seinerseits an einer Unterdruckquelle (nicht gezeigt) angeschlossen ist, um den in der Umgebung der Abtragwalzen, für die Absaugung der Faserflocken notwendigen Faserflockenförderluftstrom zu erzeugen. Das Absaugrohr ist dabei zunehmend erweiternd gestaltet und zwar derart, dass dieses zunehmend in Richtung gegen den Unterdruckerzeuger einen grösseren Querschnitt aufweist, um eine über die ganze Länge der Abtragwalzen, im wesentlichen gleichmässige Luftmenge abzusaugen. Die Unterdruckquelle ist ein Ventilator (nicht gezeigt) und ist an sich aus der Praxis bekannt und wird deshalb nicht näher erläutert.The suction channels 19 and 20 are connected to a suction pipe 21, which in turn is connected to a vacuum source (not shown) in order to generate the fiber flock conveying air flow necessary in the vicinity of the removal rollers for the suction of the fiber flakes. The suction tube is designed to be increasingly widening in such a way that it has a larger cross-section in the direction towards the vacuum generator, in order to extract an essentially uniform amount of air over the entire length of the removal rollers. The vacuum source is a fan (not shown) and is known per se from practice and is therefore not explained in more detail.

Als nicht gezeigte Variante könnte das Abtragorgan 5 derart abgeändert werden, dass nicht das ganze Abtragorgan auf und ab bewegbar ist, sondern lediglich die Walzenträger 8 und 9. Dementsprechend müsste der Austrittskanal 18 und der Absaugkanal 19 resp. 20 teleskopartig gestaltet sein, und die Spindel 14 müsste eine entsprechende Verlängerung erfahren. Das Abtragorgan 5 als solches wäre in einer derartigen Variante stationär angeordnet.As a variant not shown, the removal member 5 could be modified such that not the entire removal member can be moved up and down, but only the roller carriers 8 and 9. Accordingly, the outlet channel 18 and the suction channel 19 or. 20 should be designed telescopically, and the spindle 14 would have to undergo a corresponding extension. The removal member 5 as such would be arranged stationary in such a variant.

Die Roststäbe 7 sind auch im Falle der letztgenannten Variante ein Bestandteil des Walzenträgers 8 resp. 9, wobei diese Roststäbe, wie in Figur 5 gezeigt, oder wie in Figur 6 gezeigt, befestigbar sind.The grate bars 7 are also a component of the roller carrier 8 or in the case of the latter variant. 9, these grate bars, as shown in FIG. 5 or as shown in FIG. 6, being attachable.

Die Figuren 3,4,6 und 7 zeigen eine erfindungsgemässe Variante, in welcher die gleichen Elemente der Figuren 1 und 2 die selben Bezugszeichen aufweisen. Diese Variante zeigt eine Vorrichtung 1.1 zum Abtragen von Faserflocken mit dem Ständer 2, jedoch mit einem Abtragorgan 30, in welchem die dreh- und antreibbaren Abtragwalzen 6a resp. 6b in bezug auf das Abtragorgan stationär angeordnet sind.FIGS. 3, 4, 6 and 7 show a variant according to the invention, in which the same elements of FIGS. 1 and 2 have the same reference symbols. This variant shows a device 1.1 for removing fiber flakes with the stand 2, but with a removal member 30, in which the rotatable and driven removal rollers 6a, respectively. 6b are arranged stationary with respect to the removal member.

Das Abtragorgan 30 ist als Ganzes mittels einer hohlen Schwenkachse 31, welche um eine Drehachse 39 dreht, schwenkbar gelagert. Dabei wird die Schwenkachse 31 von einem, in einem Gleitschlitten 40 vorgesehenen Drehlager 40 (Figur 7) aufgenommen. Die Mittel, um den Gleitschlitten 40 auf und ab zu bewegen, sind in der EP-Anmeldung Nr. 193 647 beschrieben.The removal member 30 is pivotally mounted as a whole by means of a hollow pivot axis 31, which rotates about an axis of rotation 39. The pivot axis 31 is received by a rotary bearing 40 (FIG. 7) provided in a sliding carriage 40. The means for moving the slide 40 up and down are described in EP Application No. 193,647.

Im weiteren sind Roststäbe 32 entweder in der mit Figur 5 oder in der mit Figur 6 gezeigten Weise befestigt.Furthermore, grate bars 32 are fastened either in the manner shown in FIG. 5 or in the manner shown in FIG.

Das Schwenken des Abtragorganes 30 um die Drehachse 39 geschieht mittels eines Stellmotorantriebes 33 (Figur 6). Dieser umfasst einen Getriebemotor 34, der schwenkbar an einem mit dem Abtragorgan, entsprechend den Bewegungsrichtungen C und D, auf und ab bewegbaren Gleitelement 35 befestigt ist. Dieses ist durch ein stationär angeordnetes Führungsrohr 41 geführt. Dabei wird das Gleitelement 35 für die Bewegungen in den vorgenannten Richtungen durch einen Mitnehmer 42 mitgenommen, welcher einerseits am Gleitelement 35 und andererseits am Gleitschlitten 40 fest angeordnet ist. Im weiteren ist die Ausgangswelle des Getriebemotors als Spindel 36 vorgesehen, welche in einer Spindelhülse 37 geführt ist. Die Spindelhülse ihrerseits ist mittels eines Schwenklagers 38, schwenkbar am Abtragorgan 30, befestigt.The removal member 30 is pivoted about the axis of rotation 39 by means of an actuator drive 33 (FIG. 6). This comprises a geared motor 34 which is pivotally attached to a sliding element 35 which can be moved up and down with the removal member, in accordance with the directions of movement C and D. This is guided through a stationary guide tube 41. The sliding element 35 is carried along for the movements in the aforementioned directions by a driver 42 which is fixedly arranged on the one hand on the sliding element 35 and on the other hand on the sliding carriage 40. Furthermore, the output shaft of the geared motor is provided as a spindle 36 which is guided in a spindle sleeve 37. The spindle sleeve, in turn, is fastened by means of a pivot bearing 38, which can be pivoted to the removal member 30.

Im weiteren umfasst das Abtragorgan 30 für das Führen des die Faserflocken fördernden Luftstromes noch einen Luftführungsschacht 44, welcher sich entsprechend seinen Funktionen über mindestens die ganze Länge der Abtragwalzen 6a resp. 6b erstreckt und mit einem Absaugrohr 45 verbunden ist, welches zur Erzeugung des genannten Luftstromes seinerseits an einer Unterdruckquelle (nicht gezeigt) angeschlossen ist.Furthermore, the removal member 30 for guiding the air flow conveying the fiber flakes also includes an air duct 44 which, according to its functions, extends over at least the entire length of the removal rollers 6a and 6a, respectively. 6b extends and is connected to a suction pipe 45 which, in turn, is connected to a vacuum source (not shown) in order to generate the air flow mentioned.

Figur 5 zeigt als weitere Ausgestaltungsvariante der mit der EP-A-01 99 041 gezeigten Ausführungsform, welche bewegbar angeordnet sind, so dass im Zusammenhang mit Figur 5 lediglich die wesentlichen Merkmale, jedoch mit neuen Kennzeichen wiederholt werden. Im weiteren sind die der Figur 6 entsprechenden Elemente mit denselben Bezugszeichen versehen.FIG. 5 shows a further embodiment variant of the embodiment shown with EP-A-01 99 041, which are arranged to be movable, so that in connection with FIG. 5 only the essential features are repeated, but with new characteristics. Furthermore, the elements corresponding to FIG. 6 are provided with the same reference symbols.

Aus der EP-A-01 99 041 sind bereits verstellbare Roststäbe, welche relativ zur Lage der Abtragwalzen bewegbar sind, bekannt, weshalb die mit Figur 5 gezeigte Variante nicht in allen Details erklärt wird.From EP-A-01 99 041, adjustable grate bars, which are movable relative to the position of the removal rollers, are already known, which is why the variant shown in FIG. 5 is not explained in all details.

Die in Figur 5 gezeigten Roststäbe 32.1 sind an Längsträgern 50 befestigt, die ihrerseits mittels einem schwenkbar daran befestigten Hubmechanismus relativ zu den Abtragwalzen 6a resp. 6b bewegbar sind. Der Hubmechanismus umfasst die in der vorgenannten europäischen Patentanmeldung gezeigten Getriebestoppmotoren 51 sowie die Gewindespindeln 52.The grate bars 32.1 shown in Figure 5 are attached to side members 50, which in turn by means of a pivotally attached lifting mechanism relative to the removal rollers 6a and. 6b are movable. The lifting mechanism comprises the gear stop motors 51 shown in the aforementioned European patent application and the threaded spindles 52.

Die Spindeln 52 sind in Spindelhülsen 53 geführt, welche schwenkbar mit den Längsträgern 50 verbunden sind, Wie im weiteren aus der EP-A-01 99 041 ersichtlich, sind pro Längsträger 50 zwei Hubvorrichtungen vorgesehen. Dementsprechend sind die Getriebestoppmotoren mit Umdrehungsimpulsgebern 54 ausgerüstet, womit in einer Steuerung (nicht gezeigt) die Lager der Abtragroste 32.1 vorgegeben werden kann. Solche Steuerungen sind an sich bekannt.The spindles 52 are guided in spindle sleeves 53 which are pivotally connected to the longitudinal members 50. As can be seen further from EP-A-01 99 041, two lifting devices are provided per longitudinal member 50. Accordingly, the gear stop motors are equipped with rotation pulse generators 54, with which the bearings of the removal grates 32.1 are in a control (not shown) can be specified. Such controls are known per se.

Im weiteren sei nochmals erwähnt, dass das Abtragorgan 30.1 der Figur 5 in gleicher Weise mit einem in Figur 6 gezeigten Schwenkmechanismus versehen werden kann und in gleicher Weise um die Drehachse 39 schwenkbar sein kann, ohne dies nochmals im Detail zu erwähnen.It should also be mentioned again that the removal member 30.1 of FIG. 5 can be provided in the same way with a pivot mechanism shown in FIG. 6 and can be pivoted in the same way about the axis of rotation 39, without mentioning this again in detail.

Mit den Figuren 7 bis 10 sind verschiedene Betriebsvarianten gezeigt, welche mit den bisher gezeigten Vorrichtungen ausgeführt werden können.FIGS. 7 to 10 show various operating variants which can be carried out with the devices shown hitherto.

Dabei zeigen die Figuren 8 und 9 die Verwendungsmöglichkeit des Abtragorganes 30 (Figur 6) und 30.1 (Figur 5).FIGS. 8 and 9 show the possibility of using the removal member 30 (FIG. 6) and 30.1 (FIG. 5).

Im Falle der Verwendung des Abtragorganes 30 weist der sich aus der Schwenkung relativ zur Oberfläche der Faserballen 4 dieses Abtragorganes ergebende Schwenkwinkel α.1 der Abtragwalzen 6a und 6b die gleiche Grösse auf wie der Schwenkwinkel β.1 der Roststäbe 32. Dabei wird einerseits der Winkel α.1 von einer gedachten Ebene 56, welche am Umfang der Abtragwalzen 6a und 6b anliegt und einer gedachten Ebene 55, welche parallel zur Ballenoberfläche liegt, gebildet, während der Winkel β.1 von der Ebene 55 und einer gedachten Ebene 57 gebildet wird, welche die untere, in die Ballenoberfläche eintauchende Fläche der Roststäbe beinhaltet. Der Schwenkwinkel α.1 wird in der Regel derart gewählt, dass die Eindringtiefe T.1 der Abtragwalze 6a etwa halb so gross ist wie die Eindringtiefe T.2 der Abtragwalze 6b. Dabei wird unter Eindringungstiefe das Mass des Eindringens der jeweiligen Abtragwalze gegenüber der Ballenoberfläche vor dem Abtragorgan 30 verstanden. Dies gilt, ob der Ständer in Richtung A (Figur 3 und 8) oder in Richtung B (Figur 4 und 9) fährt.If the removal member 30 is used, the pivoting angle α.1 of the removal rollers 6a and 6b resulting from the pivoting relative to the surface of the fiber bales 4 of this removal member has the same size as the pivoting angle β.1 of the grate bars 32. On the one hand, the angle α.1 is formed by an imaginary plane 56, which lies against the circumference of the removal rollers 6a and 6b, and an imaginary plane 55, which is parallel to the bale surface, while the angle β.1 is formed by plane 55 and an imaginary plane 57, which contains the lower surface of the grate bars that dips into the bale surface. The swivel angle α.1 is generally chosen such that the depth of penetration T.1 of the removal roller 6a is approximately half the depth of penetration T.2 of the removal roller 6b. The penetration depth is understood to mean the degree of penetration of the respective removal roller relative to the bale surface in front of the removal member 30. This applies whether the stand moves in direction A (FIGS. 3 and 8) or in direction B (FIGS. 4 and 9).

Die Figur 9 zeigt das Vorerwähnte, wobei für die Fahrtrichtung B, anstelle des Winkels α.1 der Winkel mit α.2 und anstelle des Winkels β.1 der Winkel mit β.2 gekennzeichnet ist. Der Winkel α.1 ist gleich gross wie α.2 und β.1 wie β.2. Es ist auch möglich das Abtragorgan 5 oder 30 resp. die später noch beschriebenen Abtragorgane 30.1, 30.2, 30.3 und 30.4 derart zu betreiben, dass die Winkel α = β und die Eindringtiefen T.1 = T.2 werden, z.B. wenn die Abtragwalzen 6a und 6b in gegenläufigem Drehsinn K, L rotieren.FIG. 9 shows the above-mentioned, wherein for the direction of travel B, instead of the angle α.1, the angle is marked with α.2 and instead of the angle β.1, the angle with β.2. The angle α.1 is the same size as α.2 and β.1 as β.2. It is also possible the ablation member 5 or 30, respectively. to operate the removal elements 30.1, 30.2, 30.3 and 30.4 described later in such a way that the angles α = β and the penetration depths T.1 = T.2, e.g. when the removal rollers 6a and 6b rotate in opposite directions K, L.

Wird in einer ebenfalls möglichen Variante die Aufhängung der Roststäbe 32.1 der Figur 5 mit einem schwenkbaren Abtragorgan, gemäss dem Abtragorgan 30 der Figur 6 kombiniert, so besteht die Möglichkeit, die Winkel α.1 resp. α.2 und β.1 resp. β.2 (Figur 8) unterschiedlich zu wählen.If, in a likewise possible variant, the suspension of the grate bars 32.1 of FIG. 5 is combined with a pivotable removal member, according to the removal member 30 of FIG. 6, it is possible to adjust the angles .alpha.1 or. α.2 and β.1 respectively. β.2 (Figure 8) to choose differently.

Mit den Drehrichtungspfeilen G und der Bewegungsrichtung A (Figur 8) resp. H und B (Figur 9) wird gezeigt, dass die Abtragwalzen sogenannt gleichlaufend mit der Fahrtrichtung A resp. B drehen. Hingegen, wenn die Abtragwalzen 6a und 6b entsprechend den Drehrichtungen K und L drehen, dreht im Falle von Figur 8, die Abtragwalze 6a gleichlaufend und die Abtragwalze 6a gegenlaufend.With the direction arrows G and the direction of movement A (Figure 8) respectively. H and B (Figure 9) is shown that the removal rollers so-called synchronized with the direction of travel A and. B turn. On the other hand, if the removal rollers 6a and 6b rotate according to the directions of rotation K and L, in the case of FIG. 8 the removal roller 6a rotates in the same direction and the removal roller 6a in the opposite direction.

Die Figur 10 zeigt ein Beispiel mit der Anwendung des Abtragorganes 30.1, das heisst ohne Schwenkmechanismus, das heisst lediglich mit einer Verstellmöglichkeit der Roststäbe 32.1, so dass der Unterschied der Eindringtiefe T.3 zwischen der Abtragwalze 6a und der Abtragwalze 6b durch das Einstellen der Roststäbe 32.1 mit dem Winkel β.3 für die Fahrtrichtung A und mit dem Winkel β.4 für die Fahrtrichtung B erzeugt wird. Dabei können die Drehrichtungen G und H oder K und L gewählt werden.FIG. 10 shows an example with the use of the removal member 30.1, that is to say without a pivoting mechanism, that is to say only with an adjustment possibility for the grate bars 32.1, so that the difference in the penetration depth T.3 between the removal roller 6a and the removal roller 6b by adjusting the grate bars 32.1 with the angle β.3 for the direction of travel A and with the angle β.4 for the direction of travel B is generated. The directions of rotation G and H or K and L can be selected.

Die Figur 11 zeigt die Verwendung des Abtragorganes 5 gemäss den Figuren 1 und 2, zusätzlich mit schematisch dargestellten Roststäben 7, jedoch lediglich für die Fahrtrichtung A. Die Eindringtiefen T.1 und T.2 sind individuell anwählbar und können entsprechend in der Rückfahrt B (nicht in Figur 10 dargestellt) wechselseitig erfolgen, sofern in beiden Fahrtrichtungen Flocken abgetragen werden.FIG. 11 shows the use of the removal member 5 according to FIGS. 1 and 2, additionally schematically Grate bars 7 shown, but only for the direction of travel A. The penetration depths T.1 and T.2 can be selected individually and can accordingly take place alternately in the return trip B (not shown in FIG. 10), provided flakes are removed in both directions of travel.

Der mit doppelt gestrichelten Linien gezeigte Pfeil B und die mit gestrichelten Linien gezeigte Ballenreihe 4 deuten auf eine Variante hin, welche mit allen Abtragorganen möglich ist, nämlich, dass auf der Rückfahrt die Abtragorgane 5 resp. 30 resp. 30.1 von der Ballenoberfläche weggehoben werden und immer dieselbe Schrägstellung aufweisen. Auf diese Weise werden immer nur in Richtung A Faserflocken aus den Ballen abgetragen. Diese Variante kann auch dann zum Tragen kommen, wenn beabsichtigt wird, die Mischung innerhalb der Faserballenreihe immer von der gleichen Seite her abzutragen. Für eine solche Variante kann auch eine feste Schräglage der Abtragwalzen gewählt werden.The arrow B shown with double dashed lines and the row of balls 4 shown with dashed lines indicate a variant which is possible with all removal devices, namely that the removal devices 5 and. 30 resp. 30.1 are lifted away from the bale surface and always have the same inclination. In this way, fiber flakes are always removed from the bales only in direction A. This variant can also be used if it is intended to always remove the mixture from the same side within the fiber bale row. A fixed inclined position of the removal rollers can also be selected for such a variant.

Die Figur 12 zeigt ein Abtragorgan 30.2 in welchem die Roststäbe 32.1 in gleicher Weise verstellbar angeordnet sind, wie in Figur 5, weshalb dieselben Elemente mit den selben Bezugszeichen versehen sind, wie in Figur 5. Im weiteren sind gleiche oder ähnliche Elemente, wie in Figur 5 mit denselben Bezugszeichen versehen.FIG. 12 shows a removal member 30.2 in which the grate bars 32.1 are arranged to be adjustable in the same way as in FIG. 5, which is why the same elements are provided with the same reference numerals as in FIG. 5. Furthermore, the same or similar elements as in FIG 5 provided with the same reference numerals.

In dieser Variante besteht die Möglichkeit die Abtragwalzen 6a und 6b für das schräge Abtragen gemäss dem in den Figuren 1 bis 4 gezeigten Winkel (γ) sowie für das Abtragen mit unterschiedlicher Eindringtiefe T.1 und T.2 ebenfalls gemäss den Figuren 1 bis 4 mittels Schwenkwellen 62 in den Richtungen L und M zu bewegen. Dazu sind die Abtragwalzen an beiden stirnseitigen Enden in je einem Lagerbalken 60, (in Figur 12 nur einer gezeigt) dreh und mittels Motoren 61 (Figur 13) antreibbar gelagert. Die Lagerbalken 60 sind ihrerseits analog Waagebalken in ihrer Mitte je mittels einer entsprechenden der beiden Schwenkwellen 62, schwenkbar gelagert, so dass die Abtragwalzen 6a und 6b synchron in den Pfeilrichtungen L oder M mittels der Schwenkwellen 62 schwenkbar sind. Dabei sind die Lagerbalken 60 drehfest auf der jeweiligen Schwenkwelle angeordnet.In this variant there is the possibility of the removal rollers 6a and 6b for the oblique removal according to the angle (γ) shown in FIGS. 1 to 4 and for the removal with different penetration depths T.1 and T.2 also according to FIGS. 1 to 4 To move pivot shafts 62 in the directions L and M. For this purpose, the removal rollers are rotated at both end ends in a respective bearing beam 60 (only one shown in FIG. 12) and driven by motors 61 (FIG. 13). The Bearing beams 60 are in turn pivotally mounted in the middle, analogously to the balance beam, by means of a corresponding one of the two pivot shafts 62, so that the removal rollers 6a and 6b can be pivoted synchronously in the arrow directions L or M by means of the pivot shafts 62. The bearing beams 60 are arranged in a rotationally fixed manner on the respective swivel shaft.

Die Schwenkwellen 62 sind ihrerseits je im Gehäuse des Abtragorganes 30.2 drehbar und gegen achsiale Verschiebung gesichert gelagert und je mit einem Schwenkarm 63 (in Figur 12 mit strichpunktierten Linien angedeutet) fest verbunden. Jeder Schwenkarm 63 ist seinerseits mit einem Verschiebemechanismus 64 verbunden, welcher eine schwenkbar mit dem Schwenkarm 63 verbundene Spindelhülse 65, eine darin geführte Spindel 66 und einen diese Spindel antreibenden Schrittmotor 67 umfasst. Der Schrittmotor seinerseits ist mittels der Schwenkachse 68 schwenkbar mit dem Gehäuse des Abtragorganes 30.2 verbunden.The swivel shafts 62 are in turn each rotatably mounted in the housing of the removal member 30.2 and secured against axial displacement and are each fixedly connected to a swivel arm 63 (indicated by dash-dotted lines in FIG. 12). Each swivel arm 63 is in turn connected to a displacement mechanism 64, which comprises a spindle sleeve 65 pivotably connected to the swivel arm 63, a spindle 66 guided therein and a stepper motor 67 driving this spindle. The stepping motor in turn is pivotally connected to the housing of the removal member 30.2 by means of the pivot axis 68.

Nebst der Schwenkung der Abtragwalzen 6a und 6b mittels der Schwenkwellen 62 können ebenfalls die Roststäbe 32.1 mit der bereits für Figur 5 beschriebenen Vorrichtung einseitig oder beidseitig nach unten oder nach oben, mit Blick auf Figur 12 gesehen mittels der Spindeln 52 gehoben oder gesenkt werden, so dass die Lage der Roststäbe 32.1 an die Lage der Abtragwalzen 6a und 6b je nach Erfordernis angepasst werden können.In addition to the swiveling of the removal rollers 6a and 6b by means of the swivel shafts 62, the grate bars 32.1 can also be raised or lowered on one side or on both sides with the device already described for FIG. 5, as viewed in FIG. 12, by means of the spindles 52, so that the position of the grate bars 32.1 can be adapted to the position of the removal rollers 6a and 6b as required.

Der Schrittmotor 67 funktioniert entsprechend dem Schrittmotor 34 resp. 51, das heisst er ist mit allem Notwendigen, jedoch an sich Bekanntem, ausgerüstet, um die genaue Lage der Abtragwalzen 6a und 6b gemäss Steuerung (nicht gezeigt) einzunehmen.The stepper motor 67 operates in accordance with the stepper motor 34, respectively. 51, that is, it is equipped with everything necessary, but known per se, to assume the exact position of the removal rollers 6a and 6b according to the control (not shown).

Die Figur 14 zeigt die gleiche Schwenkbarkeit der Abtragwalzen 6a und 6b mit denselben Elementen, weshalb die gleichen Elemente mit denselben Bezugszeichen versehen sind und deshalb nicht nochmals beschrieben werden.FIG. 14 shows the same pivotability of the removal rollers 6a and 6b with the same elements, which is why the same elements are provided with the same reference symbols and are therefore not described again.

Im Vergleich zur Vorrichtung von Figur 12 sind die Roststäbe 32.2 an Seitenwänden 69 und 70 befestigt, die ihrerseits mit den Lagerbalken 60 verbunden (nicht gezeigt) sind, so dass die Seitenwände 69 und 70 gleichzeitig mit dem Lagerbalken 60 und damit auch mit den Roststäben 32.2 in den Schwenkrichtungen L und M verschwenkt werden können.In comparison to the device of FIG. 12, the grate bars 32.2 are fastened to side walls 69 and 70, which in turn are connected to the bearing bars 60 (not shown), so that the side walls 69 and 70 are simultaneously connected to the bearing bar 60 and thus also to the grate bars 32.2 can be pivoted in the pivoting directions L and M.

Die Seitenwände 69 und 70 sind auf beiden Stirnseiten der Abtragwalzen 6a und 6b je mit Stirnwänden (nicht gezeigt) verbunden, so dass die Seitenwände 69 und 70 zusammen mit den Stirnwänden einen Kanal um die Abtragwalzen 6a und 6b formen.The side walls 69 and 70 are each connected to end walls (not shown) on both end faces of the removal rollers 6a and 6b, so that the side walls 69 and 70 together with the end walls form a channel around the removal rollers 6a and 6b.

Wie aus Figur 14 ersichtlich, ist dieser Kanal durch einen Abzugskanal 71 überdeckt, der seinerseits in das Absaugrohr 39 mündet.As can be seen from FIG. 14, this channel is covered by an exhaust channel 71, which in turn opens into the suction pipe 39.

Damit nun der durch die Seitenwände 69 und 70 gebildete Kanal innerhalb des überdeckenden Kanals 71 entsprechend den Schwenkrichtungen L und M geschwenkt werden kann, sind die Seitenwände 69 und 70 gemäss den Radien R.1 und R.2 gebogen geformt. Dabei schneiden sich die Radien R.1 und R.2 in der Drehachse (nicht dargestellt) der Schwenkachse 62. Wie ebenfalls aus Figur 14 ersichtlich, ist der überdeckende Kanal 71 in Bezug auf die gebogene Form den Seitenwänden 69 und 70 angepasst und um nur soviel grösser als der sich darunter befindliche Kanal, dass zwischen den Seitenwänden 69 und 70 und den Wänden des überdeckenden Kanals 71 je nur ein Spalt mit der Spaltweite S von etwa 1 mm entsteht.So that the channel formed by the side walls 69 and 70 can now be pivoted within the overlapping channel 71 in accordance with the pivoting directions L and M, the side walls 69 and 70 are curved in accordance with the radii R.1 and R.2. The radii R.1 and R.2 intersect in the axis of rotation (not shown) of the pivot axis 62. As can also be seen from FIG. 14, the overlapping channel 71 is adapted to the side walls 69 and 70 with respect to the curved shape and only by so much larger than the channel located below that between the side walls 69 and 70 and the walls of the overlapping channel 71 there is only one gap with the gap width S of about 1 mm.

Dieser Spalt kann je nach Bedarf kleiner oder grösser gewählt werden, da durch diesen Spalt sogenannte Falschluft eingesaugt wird, die jedoch unter Umständen für das Fördern der Faserflocken im Kanal 71 dienlich sein kann. Jedenfalls soll der Spalt S mindestens so gross sein, dass die Seitenwände 69 und 70 nicht an der Innenwand des überdeckenden Kanals 71 reiben.This gap can be selected to be smaller or larger as required, since so-called false air is sucked in through this gap, which, however, may be useful for conveying the fiber flakes in the channel 71. In any case, the gap S should be at least so large that the side walls 69 and 70 do not rub against the inner wall of the overlapping channel 71.

Die Figur 15 zeigt die an beiden Enden der Abtragwalze 6a und 6b vorgesehenen Lagerbalken 60 sowie den pro Walze vorgesehene Motor 61.FIG. 15 shows the bearing beams 60 provided at both ends of the removal roller 6a and 6b and the motor 61 provided per roller.

An Stelle eines Motors pro Abtragwalze kann gesamthaft auch nur ein Motor vorgesehen werden, wobei in einem solchen Falle ein Uebertrieb zwischen den beiden Abtragwalzen vorgesehen werden muss.Instead of one motor per removal roller, only one motor can be provided in total, in which case an overdrive must be provided between the two removal rollers.

Die Figur 16 und 17 zeigen eine weitere Variante der Möglichkeit die Abtragwalzen 6a und 6b für das beschriebene Schrägabtragen versetzbar anzuordnen.FIGS. 16 and 17 show a further variant of the possibility of arranging the removal rollers 6a and 6b so that they can be displaced for the described oblique removal.

Dazu ist die Welle 76 der Abtragwalze 6a an ihren beiden Enden je in einem Exzenterlager 72 und die Welle 76 der Abtragwalze 6b an ihren beiden Enden je in einem Exzenterlager 73 dreh- und antreibbar gelagert.For this purpose, the shaft 76 of the removal roller 6a is mounted at its two ends in an eccentric bearing 72 and the shaft 76 of the removal roller 6b is rotatably and driveably supported at its two ends in an eccentric bearing 73.

Die Exzenterlager 72 sind in einer Lagerschale 74 und die Exzenterlager 73 in einer Lagerschale 75 drehbar gelagert, wobei die Lagerschalen 74 und 75 am Gehäuse des Abtragorganes 30.4 fest angeordnet sind.The eccentric bearings 72 are rotatably mounted in a bearing shell 74 and the eccentric bearings 73 in a bearing shell 75, the bearing shells 74 and 75 being fixedly arranged on the housing of the removal member 30.4.

In Figur 16 ist jeweils nur ein Paar der Exzenterlager und Lagerschalen mit strichpunktierten Linien andeutungsweise dargestellt, während in Figur 17 die Lagerschalen 74 an beiden Enden der Abtragwalze 6a sichtbar sind und die Lagerschalen 75 nur andeutungsweise gekennzeichnet sind.In FIG. 16 only a pair of the eccentric bearings and bearing shells is indicated by dash-dotted lines, while in FIG. 17 the bearing shells 74 are visible at both ends of the removal roller 6a and the bearing shells 75 are only indicated in a hint.

Wie aus Figur 17 ersichtlich, sind nicht nur die Exzenterlager und die Lagerschalen je an beiden Enden der Abtragwalzen 6a und 6b vorgesehen, sondern auch die bereits für die Figuren 12 bis 15 beschriebene Verschiebevorrichtung 64 mit dem Schrittmotor 67.As can be seen from FIG. 17, not only the eccentric bearings and the bearing shells are provided at both ends of the removal rollers 6a and 6b, but also the displacement device 64 with the stepping motor 67 already described for FIGS. 12 to 15.

Die Verschiebevorrichtung 64 beinhaltet bekanntlich die Spindelhülse 65, welche in dieser Variante schwenkbar mit einer Pleuelstange 77 verbunden ist.As is known, the displacement device 64 contains the spindle sleeve 65, which in this variant is pivotally connected to a connecting rod 77.

Die Pleuelstange 77 ihrerseits ist schwenkbar mit dem Exzenterlager 72 und 73 mittels der Schwenkbolzen 78 verbunden.The connecting rod 77 in turn is pivotally connected to the eccentric bearing 72 and 73 by means of the pivot pin 78.

Durch diesen Verschiebemechanismus und der Verbindung der Exzenterlager 72 und 73 durch die Pleuelstangen 77 werden die Abtragwalzen 6a und 6b bei Betätigung des Schrittmotores 67, entweder nach oben gemäss Pfeilrichtung R, oder nach unten gemäss Pfeilrichtung S verschoben. Dabei ist es entsprechend der Anordnung der Exzenterlager 72 und 73 so, dass wenn die Abtragwalze 6a in Richtung R nach oben verschoben wird, die Abtragwalze 6b in Richtung S um denselben Betrag nach unten verschoben wird, sodass auch mit dieser Vorrichtung die Abtragwalzen derart eingestellt werden können, dass sie beim Abtragen der Ballenoberfläche mit gleicher oder unterschiedlicher Eindringtiefe und für die Schrägabtragung gemäss Winkel (γ) betrieben werden können.By means of this displacement mechanism and the connection of the eccentric bearings 72 and 73 by the connecting rods 77, the removal rollers 6a and 6b are displaced when the stepping motor 67 is actuated, either upwards according to the arrow direction R or downwards according to the arrow direction S. According to the arrangement of the eccentric bearings 72 and 73, it is such that when the removal roller 6a is shifted upwards in the R direction, the removal roller 6b is shifted downwards in the S direction by the same amount, so that the removal rollers are also adjusted in this way with this device that they can be operated with the same or different penetration depth and for inclined removal according to the angle (γ) when removing the bale surface.

Im weiteren kann der in dieser Anmeldung dargelegte Erfindungsgedanke noch mit dem in der EP-A- 01 93 647 gezeigten Erfindungsgedanken kombiniert werden. In der letztgenannten Anmeldung wird dargestellt, dass die Zustelltiefe des Abtragorganes 5 resp. 30 resp. 30.1, 30.2, 30.3 und 30.4 pro Ueberfahrt mit zunehmender Faserballendichte verändert, das heisst verkleinert wird, um erstens die Leistung gleichmässig zu gestalten und andererseits die Faserflocken schonend aus den Faserballen herauszulösen.Furthermore, the inventive idea presented in this application can still be combined with the inventive idea shown in EP-A-01 93 647. In the latter application it is shown that the depth of delivery of the removal member 5 or. 30 resp. 30.1, 30.2, 30.3 and 30.4 per passage changed with increasing fiber bale density, that is to say reduced, in order firstly to increase the output evenly design and on the other hand gently remove the fiber flakes from the fiber bales.

Das heisst, dass die Eindringtiefe T.1 resp. T.2 mit zunehmender Faserballendichte entsprechend ebenfalls verändert werden kann. Das heisst, dass die Steuerung (nicht gezeigt) derart ausgelegt wird, dass die unterschiedliche Dichte der Faserballen auf Grund der schrägen Abtragfläche im vorgenannten Sinne berücksichtigt wird.That means that the penetration depth T.1 resp. T.2 can also be changed accordingly with increasing fiber bale density. This means that the controller (not shown) is designed in such a way that the different density of the fiber bales due to the inclined removal surface is taken into account in the aforementioned sense.

Letztlich kann der Erfindungsgedanke und damit die gezeigten Ausführungsformen auch mit drei und mehr Abtragwalzen durchgeführt werden, ebenso kann das Abtragorgan ohne Roststäbe verwendet werden.Ultimately, the idea of the invention and thus the embodiments shown can also be carried out with three or more removal rollers, and the removal member can also be used without grate bars.

Claims (22)

  1. A method for taking off fibre flocks from fibre bales (4) arranged in a row, by means of a take-off member (5) travelling over the fibre bales with at least two rotating take-off rollers (6a, 6b) which are arranged mutually adjacent as seen in the axial direction of the rollers and which are arranged behind one another as seen in the direction of travel (A, B) of the take-off member (5) and which penetrate the fibre bales with a predefined penetration depth (T1, T2) for taking off the fibre flocks and are moved over the same in such an arrangement that take-off area assumes an angle (γ) with the horizontal line which is smaller than 90° and larger than zero, characterized in that the penetration depth (T1, T2) of the rollers relative to the surface to be taken off in front of the take-off member is different.
  2. A method as claimed in claim 1, characterized in that the penetration depth (T2) of the roller (6b or 6a) situated at the rear as seen in the direction of travel (A, B) is larger than that (T1) of the front roller (6a or 6b).
  3. A method as claimed in claim 1, characterized in that the different penetration depth (T1, T2) is adjusted to the bale density.
  4. A method as claimed in claim 1, characterized in that the taking off of the fibre flocks occurs by means toothed-disk take-off rollers (6a, 6b) whose toothed disks are arranged successively after one another with intermediate spaces between the toothed disks and that grate rods (32, 32.1) are provided in the intermediate spaces which rest on the surface of the fibre bales and are also adjustable with respect to their position.
  5. A method as claimed in claim 1, characterized in that the penetration depth (T1, T2) is achieved by the differing feed of the take-off rollers (6a, 6b) relative to the surface which is to be taken off before the take-off member (5).
  6. A method as claimed in claim 4, characterized in that the different penetration depth (T1, T2) is achieved by the position of the grate rods (32, 32.1).
  7. A method as claimed in the claims 5 and 6, characterized in that the penetration depth (T1, T2) is achieved by the different feed of the take-off rollers (6a, 6b) and by the position of the grate rods (32, 32.1).
  8. A method as claimed in the claims 1 to 7, characterized in that the take-off rollers (6a, 6b) have the same direction of rotation (G and H).
  9. A method as claimed in the claims 1 to 7, characterized in that the take-off rollers (6a, 6b) are provided with opposite directions of rotation (K, L).
  10. A method as claimed in claim 8 or 9, characterized in that as seen in the direction of movement (A, B) of the take-off member (5), the first roller (6a or 6b) rotates in a so-called synchronous manner with the direction of movement.
  11. An apparatus for taking off fibre flocks from fibre bales arranged in a row (4) with a take-off member (5) with at least two rotating take-off rollers (6a, 6b) which are arranged mutually adjacent as seen in the axial direction of the rollers and which are arranged behind one another as seen in the direction of travel (A, B) of the take-off member (5), with the take-off member (5) or the take-off rollers (6a, 6b) being simultaneously upwardly and downwardly movable during the travel along the row of bales (4) in such way that the take-off surface assumes an angle (γ) with the horizontal line which is smaller than 90° and larger than zero, characterized in that the rollers (6a, 6b) are position-adjustable towards the take-off surface in such a way that the penetration depth (T1, T2) of the rollers (6a, 6b) differs with respect to the surface to be taken off before the take-off member (5).
  12. An apparatus as claimed in claim 11, characterized in that the rollers (6a, 6b) are arranged adjustable with respect to their position within the take-off member (5).
  13. An apparatus as claimed in claim 11, characterized in that the take-off member (5) is arranged swivellable and the positional adjustability of the rollers (6a, 6b) is carried out by pivoting the take-off member (5) by a predetermined amount and that means (33, 64) are provided for the pivoting of the take-off member (5).
  14. An apparatus as claimed in claim 11, characterized in that the take-off member (5) is subdivided into individual partial take-off members (6a, 6b) which are each individualy movable by respective means (10) upwards (E) and/or downwards (F) by a predetermined amount.
  15. An apparatus as claimed in claim 11, characterized in that the take-off members comprise toothed disks which, as seen in the direction of the axis of rotation of the take-off rollers (6a, 6b), are arranged next to one another with intermediate spaces between the toothed disks and that grate rods (32.1) are provided in the intermediate spaces which rest on the surface of the fibre bales during the take-off of the fibre flocks and that means (51, 54) are provided in order to adjustably arrange the grate rods (32.1) in their position with respect to the take-off members (6a, 6b).
  16. An apparatus as claimed in claim 15, characterized in that the grate rods (32.1) are arranged positionally adjustable in the same manner as are the take-off rollers (6a, 6b).
  17. An apparatus as claimed in claim 15, characterized in that the grate rods (32.1) on the one part are adjustable according to the positional adjustability of the rollers (6a, 6b) and on the other part are adjustable by own means (51).
  18. An apparatus as claimed in one of the claims 11 to 17, characterized in that the take-off rollers (6a, 6b) are drivable in the same direction of rotation (G, H).
  19. An apparatus as claimed in one of the claims 11 to 17, characterized in that the take-off rollers (6a, 6b) are drivable in opposite directions of rotation (K, L).
  20. An apparatus as claimed in claim 18 or 19, characterized in that the first take-off roller (6a or 6b), as seen in the direction of travel (A, B) of the take-off member (5), is drivable so-called synchronously with the direction of travel (A, B).
  21. An apparatus as claimed in claim 11 to 17, characterized in that the direction of rotation (G, H) of the take-off rollers (6a, 6b) is reversible.
  22. An apparatus as claimed in claim 11 to 17, characterized in that the take-off roller (5) is liftable from the fibre bale (4) for the return travel (B).
EP90107497A 1989-04-26 1990-04-20 Method and apparatus for removal of fibre flocks from bales of fibre Expired - Lifetime EP0394856B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1589/89 1989-04-26
CH158989 1989-04-26

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EP0394856B1 true EP0394856B1 (en) 1997-06-04

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EP (1) EP0394856B1 (en)
JP (1) JPH02293415A (en)
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DE (1) DE59010721D1 (en)

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DE3643507A1 (en) * 1986-12-19 1988-06-30 Truetzschler & Co DEVICE FOR OPENING FIBER BALLS WITH TWO FAST-SPEED MILLING DEVICES
DE3706268C3 (en) * 1987-02-26 1995-02-09 Rieter Ingolstadt Spinnerei Device for processing bales of fiber
IN172202B (en) * 1988-02-04 1993-05-01 Rieter Ag Maschf
IN172448B (en) * 1988-02-04 1993-08-07 Rieter Ag Maschf
JPH03274863A (en) * 1990-03-23 1991-12-05 Canon Inc Image processing method

Also Published As

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EP0394856A1 (en) 1990-10-31
JPH02293415A (en) 1990-12-04
DD299970A5 (en) 1992-05-14
US5105508A (en) 1992-04-21
DE59010721D1 (en) 1997-07-10

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