EP0354455B1 - Grille réglable pour le bras d'enlèvement d'une ouvreuse de balles - Google Patents

Grille réglable pour le bras d'enlèvement d'une ouvreuse de balles Download PDF

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Publication number
EP0354455B1
EP0354455B1 EP89114232A EP89114232A EP0354455B1 EP 0354455 B1 EP0354455 B1 EP 0354455B1 EP 89114232 A EP89114232 A EP 89114232A EP 89114232 A EP89114232 A EP 89114232A EP 0354455 B1 EP0354455 B1 EP 0354455B1
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EP
European Patent Office
Prior art keywords
grid
adjustable
accordance
arm
levers
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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
EP89114232A
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German (de)
English (en)
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EP0354455A1 (fr
Inventor
Daniel Hanselmann
Walter Schlepfer
Jost Aebli
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Maschinenfabrik Rieter AG
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Maschinenfabrik Rieter AG
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Publication of EP0354455A1 publication Critical patent/EP0354455A1/fr
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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

Definitions

  • the present invention relates to an adjustable grate for the removal arm of a bale removal machine for adjusting the penetration depth of drivable removal elements which extend between the grate bars arranged transversely to the longitudinal direction of the removal arm.
  • An adjustable grate of this type is known from European patent application, EP-A-199 041 or from US-A-3 381 341.
  • bale removal machine for opening the bale, the bales being placed in a row one behind the other and parallel to the direction of travel of the bale removal machine.
  • the penetration depth is defined as the distance by which the fiber removal elements protrude at most below the grating sliding over the surface of the bale. It differs from the infeed depth, which is a measure of the vertical adjustment of the entire removal arm of the bale removal machine when it moves again along the row of bales.
  • EP-A-199 041 allows both an adjustment of the penetration depth and the inclination of the grate, it also requires four drive motors which have to be synchronized with one another at least in pairs.
  • the present invention has for its object to provide an adjustable grate, which is inexpensive to manufacture, mechanically stable and allows the penetration depth to be automatically adapted to the bale hardness that occurs, possibly also with different hardness in the transverse direction of a row of bales.
  • the invention provides that the grate bars are biased by spring devices into a stop position corresponding to the minimum penetration depth and that the spring force is selected so that the movably arranged grate bars are shifted in the direction of increasing penetration depth depending on the hardness of the bale, in one position, which corresponds at least approximately to the appropriate penetration depth.
  • the invention is based on the knowledge that the penetration depth should be reduced in the case of softer bales, while the penetration depth must be increased in the case of harder bales.
  • the fact is that with softer bales the removal elements tend to tear more flakes out of the bale than with harder bales. To counteract this tendency, the penetration depth is at further bales reduced.
  • the adjustment range of the penetration depth is about 7 mm.
  • the invention is based on the finding that with harder bales the force directed upwards from the bales onto the grate bars is greater than with softer bales.
  • the invention is based on the knowledge that it is possible by spring loading of the grate bars downwards, the greater force with harder bales with an appropriate design of the spring properties an automatic adaptation of the penetration depth to the bale hardness is possible.
  • the invention therefore provides that the stop position can be predetermined and that it can be adjusted manually or by machine.
  • a particularly preferred embodiment of the invention is characterized in that the individual grate bars can be prestressed into the stop position by respective spring devices. In this way, each grate bar automatically adapts to the local bale hardness by changing the local penetration depth. This is particularly advantageous with long removal arms, i.e. for material removal machines, where several bales are placed next to each other in the transverse direction of the machine
  • the invention also provides an arrangement in which the grate bars are adjustable in groups.
  • Each group of grate bars could e.g. extend over a bale width.
  • All grate bars of the removal arms can also be rigidly connected to one another and form a complete grate, the grate as a whole being able to be pressed against its spring position against the spring force of the spring device for automatic adaptation of the penetration depth.
  • the last two options have the advantage that relatively few spring devices or springs are required.
  • each group or each grate is spring-loaded by at least two spring devices arranged on one longitudinal side of the removal arm.
  • each grate bar has at least one end at least one elongated hole extending at least substantially perpendicular to its longitudinal direction, through which an optionally attached to the removal arm adjustable guide rod runs, and that between this end of the grate rod and the removal arm a pressure spring is arranged.
  • each grate bar is a compression spring, which acts directly on the end of the grate bar, and a suitable abutment for this compression spring.
  • the other end of the grate bar can either be pivotally attached to the support arm or it can also be spring-loaded with a simple compression spring.
  • the lateral guidance of the grate bars, i.e. in the transverse direction is achieved in this embodiment by the guide rod, which extends through said slot, this guide rod can assume a double function by determining the stop position of the grate bars by contact with one end of the slot.
  • This version is also particularly advantageous because it enables a very compact design, the compression springs can easily be arranged to the left and right of the working group of the removal elements at the lower end of this working group, so that the removal arm itself can have relatively small dimensions.
  • the small compression springs do not interfere with the removal of the fiber flakes removed from the bales.
  • each grate bar is spring-loaded, is characterized in that each grate bar is engaged at least at one end with one end of a pivotally arranged lever on the removal arm, which serves to press the grate bar into the stop position, and that each a spring engages each lever.
  • the embodiment according to claim 15, in which the levers are designed as double-armed levers and engage the spring on the ends of the levers opposite the grate bars, has the particular advantage that the spring can be arranged remotely from the grate bars, so that the prestressing of the grate bars in the stop position requires very few components in the area of the grate bars, so that the cotton flakes removed from the bale by the removal elements can be transported unhindered.
  • each lever has a cylinder-like end which engages in a lateral recess at the end of the associated grate bar and is displaceably guided therein, has the particular advantage that the cylinder-like ends of the levers cause the associated grate bars to tilt laterally can prevent.
  • the levers are used for a double purpose, namely on the one hand to enable the grate bars to be adjusted and on the other hand to guide them. This guide not only serves to prevent the grate bars from tilting to the side, but the grate bars are also guided through the lever ends in the transverse direction of the removal arm.
  • each grate bar has an I-shaped shape in plan view and the adjacent grate bars touch each other on the end faces of the head and foot beams of the respective I-shape.
  • All levers or groups of levers on each side of the removal arm can be arranged on a common pivot axis and their sides touch each other in the region of the pivot axis. This enables space-saving accommodation of the pivot axis for the levers and makes special spacers unnecessary.
  • each group of grate bars or the entire grate on its or its two longitudinal sides arranged parallel to the removal arm of a respective guide bar is penetrated, the guide rods being guided at their two ends and optionally at intermediate points in guides at the ends of the removal arm or in intermediate guides of the removal arm, that each group or the grate has at least one longitudinal side of the same or at least two spring devices , and that at least the guides or intermediate guides provided on this longitudinal side of the removal arm for the associated guide rod are designed as vertically extending elongated holes.
  • the spring elements can not only consist of tension and compression springs, e.g. can also be designed as rubber springs, hydraulic springs, gas pressure springs, etc.
  • FIG. 1 shows a greatly simplified illustration of part of a bale removal machine with a tower 10 which carries a removal arm 11 which can be moved back and forth along a row 12 of bales in the direction of the arrow 13.
  • the removal arm 11 can be adjusted in the vertical direction in the direction of the double arrow 14 in order to set the infeed depth of the removal arm with each renewed movement along the row 12 of bales.
  • the bale row 12 has a width of three bales, i.e. the removal arm 11 extends over three bales and simultaneously removes flakes from all three bales.
  • a removal roller with removal elements (not shown in FIG. 1) is located within the removal arm 11, the working tips of which remove the fiber flakes from the bale.
  • FIG. 2 represents a side view of the removal member in the plane II-II.
  • Fig. 2 you can see the front and rear longitudinal sides 16 and 17 and the lower edge 18 of the removal member.
  • the rotatable removal roller 19 which is rotatably mounted about an axis of rotation 21 and carries individual tooth-shaped removal members 22 on its outer surface.
  • the tooth-shaped removal members 22 are arranged on a plurality of circles arranged one behind the other, each circle being somewhat oblique to the axis of rotation 21, so that the individual tooth-shaped elements execute a swashplate-like movement.
  • Each circle of ablation teeth runs into the gap between two adjacent grate bars 23, of which only one grate bar can be seen in FIG. 2. It can be seen that the bottom tooth 22 lies by an amount T lower than the lower edge 24 of the grate bar 23. This amount T represents the penetration depth.
  • Two guide plates 25, 26 are arranged to the left and right of the removal roller, which, together with the outer surface of the removal roller, forms a guide channel for the removal of the fiber flakes detached from the bales.
  • the individual grate bars 23 have an I-shaped shape in plan view and are guided at the two ends 27, 28 by respective guide bars 29, which are arranged in slot-like recesses 30 in the ends 27, 28 of the grate bars 23, which are open at the bottom.
  • the grate bars assume an inclined position, and the slot-like recesses are therefore somewhat wider than the diameter of the guide rods 29, at least at one end, so that such an inclined position of the grate bars does not result in them being jammed.
  • each end of the grate bar 23 shown is a respective helical compression spring 31, which presses on the one hand against the top 32 of the grate bar, on the other hand against a flange-like abutment 33, the abutments being arranged firmly on the walls of the longitudinal sides 16 and 17 of the removal member.
  • the compression springs 31 are centered by respective pins 34, the length of the pins being chosen so that the compression springs are held on both sides, i.e. cannot be lost.
  • the helical spring 31 pushes the grate bar 23 downward, so that the ends 36 of the slot-like recesses 30 are pressed against the guide bars 29 and thus determine the stop position of the grate bar and therefore also the minimum penetration depth.
  • a force F occurs on the underside 24 of the grate bar 23, which depends on the respective hardness of the bale underneath.
  • the springs 31 are more or less compressed, so that the penetration depth changes in accordance with the magnitude of this force F.
  • a force distribution occurs along the underside of the grate bar 23 and it is not at all certain that the resulting force acts in the middle of the grate bar, as indicated in FIG. 2. This does not matter, however, since the springs 30 on the left and right side of the grate bar 23 in FIG. 2 are compressed by different amounts, so that the position of the grate bar automatically adapts to the force distribution present in each case.
  • the upward movement of the grate bar is determined by the flat upper side of the pins 34, which abut against the flanges 33. From this drawing it can also be seen that the grate bar 23 has on the left and right sides an inclined surface 38, 39 which represents a kind of starting ramp, i.e. exerts a skid-like effect, depending on the direction in which (double arrow 13) the removal arm moves.
  • the removal machine be designed so that the removal arm only moves in one direction, e.g. in the case of a rotating tower version or only in one direction, it is sufficient to pretension the grate bars only at one end with a spring 31 into the stop position, the other end can simply be articulated, it being necessary for about twice the amplitude of the movement of the spring-loaded End of the grate bar to achieve the same adjustment range of the penetration depth.
  • guide rods 29 are fixedly attached to the end faces of the removal arm, as indicated for example at 41 in FIG. 1.
  • the guide rods can also be supported at intermediate points within the removal arm, as is indicated, for example, at 42 in FIG. 1.
  • FIGS. 3 and 4 show another embodiment of the adjustment of the grate bars according to the invention, in which the same reference numerals are used for the same or comparable parts as in FIG. 2, but with the addition .1.
  • the long sides of the removal arm have been omitted in FIGS. 3 and 4 and in the following drawings.
  • each lever 44 is rotatably arranged about a fixed pivot axis 45.
  • the pivot axes 45 are fastened in accordance with the guide rods 29 of the embodiment according to FIG. 2 to the end walls or intermediate points of the removal arm.
  • Each lever 44 has at its one end facing the grate bar 23.1 a cylinder-like head 46, the cylinder axis of which is parallel to the axis of rotation 21.1 of the removal roller, the cylinder-like head fitting into a correspondingly shaped recess 47 at the associated end of the grate bar 23.
  • a certain play is also provided here so that jamming of the grate bars cannot occur when the bars are inclined.
  • each tension spring 31.1 acts on the end of the double-armed lever 44 facing away from the cylinder-like head and pull it upwards.
  • the end of each tension spring 31.1 removed from the lever is anchored to a rod 49 which is fastened to the end faces of the removal arm in accordance with the pivot axes 45 and, if appropriate, also at intermediate points along the length of the removal arm.
  • the rods 49 adjustable in height, e.g. by an eccentric drive or by an appropriately designed adjusting screw so that the preload of the tension spring 31.1 can be adjusted.
  • Fig. 3 also shows two stops 36.1, which determine the stop position of the grate bar 23, ie the position of the minimum penetration depth. There are also two Further, possibly adjustable stops 52 are shown, which determine the position of the maximum penetration depth.
  • the levers 44 are arranged next to one another on the pivot axes 45 and in such a way that no intermediate pieces or spacers are required.
  • the grate bars 23, which are I-shaped in plan view, are also arranged directly next to one another without intermediate pieces and are thus secured against displacement in the longitudinal direction of the removal arm. A lateral tilting of the grate bars is prevented by the wide cylindrical heads 46, as is a movement in the transverse direction of the removal arm.
  • the cylinder-like heads 46 of the individual pivot levers 44 are somewhat narrower than the associated ends of the grate bars. In this way it is ensured that the cylinder-like head 46 does not simultaneously engage in the recesses of two grate bars. It is obvious that the grate bars are individually adjustable in the embodiment according to FIGS. 3 and 4.
  • FIG. 5 and 6 show a further embodiment in which the grate bars can be adjusted in groups, which embodiment can also be used for the adjustment of an entire grate. Parts that are known from the previous versions are marked with the addition .2.
  • each angle lever 44.2 has a horizontal slot guide 58 at its end facing the associated guide rod 55, so that the guide rods 55 are prestressed downward under the load of the tension spring 31.2.
  • the elongated holes 58 ensure that when the levers 56 are rotated about the respective pivot axes 60 there is no lateral displacement of the grate bars. In order to avoid jamming of the grate bars when they are inclined, a certain play must be provided between the guide bars 55 and the vertical elongated holes 57 or between the guide bars 55 and the grate bars.
  • stops 36.2 are provided which define the stop position, i.e. determine the minimum penetration depth.
  • Further adjustable stops 52.2 here designed as adjusting screws screwed into the side walls 16 and 17, make it possible to change the maximum penetration depth.
  • the ends of the tension springs 59 facing away from the double-arm levers 56 are fastened to stud bolts 62 which are arranged on the end walls of the removal arm, outside the region of the removal roller. Possibly. these stud bolts 62 can be designed as eccentric devices so that the preload of the springs 59 can be adjusted. As with all other embodiments, it is possible to load the grate bars only at one end with spring force, the other end can be pivoted simply if the removal arm moves only in one direction or only removes in one direction.
  • the articulation axis 65 of the lever 64 is designed as an axis of rotation in this embodiment and extends through the removal arm to a further lever 66 , which is constructed in the same way as the lever 64, but the downward-pointing arm may be missing if no second linkage is provided. Thus the entire left side of the grate is raised or lowered at the same time.
  • the articulation axis 62.3 of the lever 44.3 is also designed as an axis of rotation, so that this lever is coupled to the corresponding lever 44.3 on the rear side of the removal arm (upper lever 44.3 in FIG. 3).
  • a stop 36.3 is required, which is arranged above the tension spring.
  • the pivot axes 62.3 and 65 can also be formed by studs or pins. In this case, another linkage is provided between the lever 66 and the associated lever 44.3.
  • the walls marked with the reference numerals 70, 71 are the end walls of the removal arm or that the wall 71 is only an intermediate wall of the removal arm, so that several such grids in the longitudinal direction of the Removal arm are arranged.

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

Claims (28)

1. Grille ajustable pour le bras de prélèvement d'une machine de prélèvement de balles pour le réglage de la profondeur de pénétration d'organes de prélèvement de fibres commandables et pénétrant entre les barreaux de grille disposés perpendiculairement au sens longitudinal du bras de prélèvement, caractérisée par le fait que les barreaux de grille (23, 23.1, 23.2, 23.3) sont pré-tendus par des dispositifs à ressorts (31, 31.1, 31.2, 31.3) dans une position de butée correspondant à la profondeur de pénétration minimum (T), et que la force de ressort est choisie de telle manière que, en fonction de la dureté de balle, les barreaux de grille disposés d'une manière mobile (23, 23.1, 23.2, 23.3) sont déplacés dans le sens d'une augmentation de la profondeur de pénétration (T), dans une position qui correspond au moins approximativement à la profondeur de pénétration adéquate respective.
2. Grille ajustable selon revendication 1, caractérisée par le fait que la position de butée peut être prédéterminée manuellement ou mécaniquement.
3. Grille ajustable selon revendication 2, caractérisée par le fait que des moyens de butée (52, 52.2) sont prévus qui déterminent la profondeur de pénétration maximum et, le cas échéant, sont réglables.
4. Grille ajustable selon l'une des revendications précédentes, caractérisée par le fait que les barreaux individuels de grille (23, 23.1) peuvent être pré-tendus dans la position de butée par des dispositifs à ressorts (31, 31.1) respectifs.
5. Grille ajustable selon l'une des revendications précédentes 1 à 3, caractérisée par le fait que les barreaux de grille (23.2, 23.3) sont ajustables par groupes.
6. Grille ajustable selon l'une des revendications précédentes 1 à 3, caractérisée par le fait que, pour l'adaptation automatique de la profondeur de pénétration, les barreaux de grille (23.2, 23.3) sont reliés entre eux d'une manière rigide et forment une grille complète, et que la grille peut être pressée comme ensemble en dehors de sa position de butée, contre la force de ressort des dispositifs à ressorts (31.2, 31.3).
7. Grille ajustable selon revendication 4, caractérisée par le fait que chaque barreau de grille (23) possède, au moins sur une extrémité, un trou allongé (30) s'étendant au moins essentiellement perpendiculairement à sa direction longitudinale, trou à travers lequel se déplace une barre de guidage (29) fixée sur le bras de prélèvement et le cas échéant pouvant être ajustée, et qu'un ressort de pression (31) est disposé entre cette extrémité du barreau de grille (23) et le bras de prélèvement (11).
8. Grille ajustable selon revendication 2, caractérisée par le fait qu'une extrémité (36) du trou allongé (30), dont l'autre extrémité est ouverte le cas échéant, détermine la posisition de butée par contact avec la barre de guidage (29).
9. Grille ajustable selon revendication 7 ou 9, caractérisée par le fait que les ressorts de pression (31), formés comme des ressorts à boudin, sont maintenus et centrés sur les extrémités des barreaux de grille (23) par des tenons (34).
10. Grille ajustable selon l'une des revendications précédentes 7 à 9, caractérisée par le fait que les extrémités des ressorts de pression (31), opposées aux barreaux de grille, sont appuyées sur des flasques (33) s'avançant vers l'intérieur du bras de prélèvement (11).
11. Grille ajustable selon revendication 10, caractérisée par le fait que les tenons s'étendent depuis les extrémités des barreaux de grille (23) dans le sens des flasques (33) et servent à maintenir respectivement à centrer les ressorts de pression (31).
12. Grille ajustable selon revendication 9 ou 11, caractérisée par le fait que les tenons s'étendent par glissement à travers des ouvertures pratiqueés dans le bras de prélèvement respectivement dans les extrémités des barreaux de grille.
13. Grille ajustable selon revendication 4, caractérisée par le fait que chaque barreau de grille est engagé au moins par une extrémité avec une extrémité d'un levier (44) disposé d'une manière oscillante sur le bras de prélèvement, et qui sert à presser vers le bas le barreau de grille (23.1) dans la postion de butée, et qu'il y a un ressort respectif (31.1) qui attaque chaque levier (44).
14. Grille ajustable selon revendication 13, caractérisée par le fait que les ressorts (31.1) sont des ressorts de traction, et sont tendus entre le bras de prélèvement (11) et les leviers (44).
15. Grille ajustable selon revendication 13 ou 14, caractérisée par le fait que les leviers (44) sont des leviers à double bras, et que les ressorts (31.1) attaquent les extrémités des leviers (44) opposées aux barreaux de grille (23.1).
16. Grille ajustable selon revendication 15, caractérisée par le fait que les leviers sont des leviers angulaires (44.2, 44.3).
17. Grille ajustable selon l'une des revendications 13 à 16, caractérisée par le fait que les positions de butée des barreaux de grille (23.1) sont formées par des butées (36.1) sur lesquelles les bras des leviers (44) viennent buter.
18. Grille ajustable selon l'une des revendications 13 à 17, caractérisée par le fait que chaque levier (44) possède une extrémité cylindrique (46) qui s'engage dans un évidement latéral (47) pratiqué dans l'extrémité du barreau de grille (23.1) adjoint, et qui est guidée d'une manière déplaçable dans celui-ci de manière à ce que les extrémités en forme de cylindre (46) des leviers évitent un mouvement de bascule latéral des barreaus de grille (23.1) disposés en correspondance.
19. Grille ajustable selon l'une des revendications 13 à 18, caractérisée par le fait que tous les leviers (44) respectivement groupes de leviers sont disposés sur un axe de pivotement commun (45) respectif, disposé de chaque côté du bras de prélèvement, et qu'ils se touchent latéralement l'un l'autre dans la zone de l'axe de pivotement (45).
20. Grille ajustable selon l'une des revendications 13 à 19, caractérisée par le fait que chaque barreau de grille (23.1) possède une structure en forme de 1, vue en plan, et que des barreaux de grille (23.1) adjacents se touchent l'un l'autre sur les faces frontales des poutres de tête et de pied de la forme en I respective.
21. Grille ajustable selon revendication 5 ou 6, caractérisée par le fait que chaque groupe de barreaux de grille (23.2, 23.3) respectivement la grille complète est pénétré(e) par une barre de guidage (55) respective sur ses deux côtés longitudinaux disposés parallèlement au bras de prélèvement, les barres de guidage étant guidées sur leurs deux extrémités et éventuellement sur des endroits intermédiaires, dans des guides sur les extrémités frontales du bras de prélèvement (11) respectivement dans des guides intermédiaires du bras de prélèvement, que chaque groupe respectivement la grille possède, sur au moins un côté longitudinal de celui-ci respectivement de celle-ci, au moins deux dispositifs à ressorts (31.2, 31.3), et qu'au moins les guides respectivement les guides intermédiaires du bras de prélèvement (11) prévus sur ce côté longitudinal pour la barre de guidage adjointe (55) sont formés comme des trous allongés (57, 57.3) s'étendant perpendiculairement.
22. Grille ajustable selon revendication 20, caractérisée par le fait que des dispositifs à ressorts (31.2) sont prévus sur les deux côtés longitudinaux de chaque groupe respectivement de la grille, et que les guides respectivement les guides intermédiaires du bras de prélèvement (11) pour les barres de guidage (55) des deux côtés du bras de prélèvement (11) sont formés comme des trous allongés (57) s'étendant perpendiculairement.
23. Grille ajustable selon revendicaton 21 ou 22, caractérisée par le fait que chaque dispositif à ressorts possède la forme d'un levier (44.2, 44.3) chargé par ressort.
24. Grille ajustable selon revendication 23, caractérisée par le fait que chaque levier (44.2, 44.3, 64, 66) possède, sur son extrémité entourant la barre de guidage (55, 55.3) adjointe, un guide en forme de trou allongé (58, 58.3) s'étendant horizontalement.
25. Grille ajustable selon revendication 24, caractérisée par le fait que les leviers (44.2, 44.3) sont formés comme leviers angulaires à double bras, avec un bras attaquant la grille adjointe et un bras chargé par ressort.
26. Grille ajustable selon revendication 25, caractérisée par le fait que des leviers (44.3, 64, 66) sont prévus sur les deux côtés lontigudinaux du bras de prélèvement (11), qu'au moins un des leviers (44.3) sur un côté est directement chargé par ressort, mais que les leviers (64, 66) sur l'autre côté sont accouplés aux leviers (44.3) directement chargés par ressort, via des bras oscillants respectivement des tringles (63), pour le soulèvement respectivement l'abaissement dans le même sens du côté longitudinal adjoint du groupe respectivement de la grille.
27. Grille ajustable selon revendication 23, caractérisée par le fait que la position de butée est déterminée par des butées (36.2, 36.3) travaillant conjointement avec les leviers (44.2, 44.3).
28. Grille ajustable selon l'une des revendications précédentes, caractérisée par le fait que la pré-tension des dispositifs à ressort est réglable pour chaque dispositif à ressorts individuel et/ou pour tous les dispositifs à ressorts en ensemble.
EP89114232A 1988-08-12 1989-08-02 Grille réglable pour le bras d'enlèvement d'une ouvreuse de balles Expired - Lifetime EP0354455B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3827517 1988-08-12
DE3827517A DE3827517A1 (de) 1988-08-12 1988-08-12 Verstellbarer rost fuer den abtragarm einer ballenabtragmaschine

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EP0354455A1 EP0354455A1 (fr) 1990-02-14
EP0354455B1 true EP0354455B1 (fr) 1992-05-27

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EP89114232A Expired - Lifetime EP0354455B1 (fr) 1988-08-12 1989-08-02 Grille réglable pour le bras d'enlèvement d'une ouvreuse de balles

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US (1) US4984336A (fr)
EP (1) EP0354455B1 (fr)
JP (1) JPH0299616A (fr)
DE (2) DE3827517A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE3943322A1 (de) * 1989-12-29 1991-07-04 Rieter Ag Maschf Verfahren und vorrichtung zum betrieb einer ballenabtragmaschine
DE3936810A1 (de) * 1989-11-04 1991-05-08 Truetzschler & Co Verfahren und vorrichtung zum abtragen von faserflocken von textilfaserballen, z. b. aus baumwolle, chemiefasern u. dgl.
IT1270620B (it) * 1994-07-14 1997-05-07 Marzoli & C Spa Prelevatore automatico perfezionato di fibre in fiocco da balle di fibre
CH714726A1 (de) * 2018-03-07 2019-09-13 Rieter Ag Maschf Abtragarm für einen Ballenöffner.

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EP0069847B1 (fr) * 1981-07-15 1985-09-11 Maschinenfabrik Rieter Ag Procédé et dispositif pour ouvrir des balles de fibres textiles
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US4586217A (en) * 1985-01-24 1986-05-06 Trutzschler Gmbh & Co. Kg Grate for a fiber bale opener
IN166942B (fr) * 1985-03-22 1990-08-11 Rieter Ag Maschf
DE3544435A1 (de) * 1985-12-16 1987-06-19 Truetzschler & Co Vorrichtung zum oeffnen von mehreren faserballen
DE3637351A1 (de) * 1986-01-31 1987-08-13 Truetzschler & Co Vorrichtung zum abtragen von faserballen, z.b. baumwoll- und chemiefaserballen, mittels einer oeffnervorrichtung
IT1228418B (it) * 1986-10-11 1991-06-17 Truetzschler & Co Dispositivo di apertura per l'apertura di balle di fibra pressate
DE8627019U1 (de) * 1986-10-11 1988-02-18 Trützschler GmbH & Co KG, 4050 Mönchengladbach Öffnungsvorrichtung zum Öffnen von gepreßten Faserballen
DE3643507A1 (de) * 1986-12-19 1988-06-30 Truetzschler & Co Vorrichtung zum oeffnen von faserballen mit zwei schnellaufenden fraeseinrichtungen

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EP0354455A1 (fr) 1990-02-14
DE58901533D1 (de) 1992-07-02
US4984336A (en) 1991-01-15
DE3827517A1 (de) 1990-02-15
JPH0299616A (ja) 1990-04-11

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