EP0497002B1 - Dispositif de formation d'un intervalle dans un courant d'articles se chevauchant - Google Patents

Dispositif de formation d'un intervalle dans un courant d'articles se chevauchant Download PDF

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Publication number
EP0497002B1
EP0497002B1 EP91122241A EP91122241A EP0497002B1 EP 0497002 B1 EP0497002 B1 EP 0497002B1 EP 91122241 A EP91122241 A EP 91122241A EP 91122241 A EP91122241 A EP 91122241A EP 0497002 B1 EP0497002 B1 EP 0497002B1
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EP
European Patent Office
Prior art keywords
conveyor
speed
gap
belt
driven
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91122241A
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German (de)
English (en)
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EP0497002A1 (fr
Inventor
Konrad Auf Der Mauer
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Ferag AG
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Ferag AG
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Publication date
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/58—Article switches or diverters
    • B65H29/60—Article switches or diverters diverting the stream into alternative paths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/66—Advancing articles in overlapping streams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H33/00—Forming counted batches in delivery pile or stream of articles
    • B65H33/12—Forming counted batches in delivery pile or stream of articles by creating gaps in the stream

Definitions

  • the present invention relates to a device for forming a gap in a shingled stream of flat products, in particular printed products, according to the preamble of claim 1.
  • a generic device for forming a gap in a scale flow of flat products is known from DE-B-28 52 603 and the corresponding GB-A-2 037 714.
  • a gap-forming device is connected between a first and a second conveyor. This has a belt conveyor in order to feed the shingled stream supplied by means of the first conveyor to the second conveyor.
  • a conveyor chain runs around the belt conveyor, one strand length of which is provided with blind-like strips.
  • the belt conveyor is driven at the same speed as the first and second conveyors and the blind-like strips are located outside the conveyor belt's effective conveyor belt.
  • the conveyor chain is driven at the same rotational speed as the first conveyor, so that the products fed by it come to rest on the strips and the belt conveyor is put together accelerated with the second conveyor in order to separate the products lying on them from the products supplied and to form a gap.
  • the belt conveyor and the second conveyor are braked again to the speed of the first conveyor and the conveyor chain.
  • the products lying on the blind-like slats are fed to the second conveyor at unchanged speed and the conveyor chain continues to be driven until the slats are no longer in the area of the conveyor belt.
  • the products following the strips are fed to the second conveyor at unchanged speed by means of the belt conveyor.
  • a device for chopping a stream of shingles into sections of the same length, while avoiding changing the overlap of the products lying one on top of the other, is known from CH-PS 660 353 and the corresponding US Pat. No. 4,585,227.
  • This has a first conveyor, which is driven at a constant speed and is in the form of a belt conveyor, and a second conveyor which is connected immediately downstream and is also in the form of a belt conveyor and whose length corresponds at least to the length of a section.
  • an acceleration conveyor is provided, the endless revolving chain of which is provided with a rubber strip in a section which corresponds approximately to the length of its conveyor-effective strand.
  • the rubber strip protrudes above the first conveyor, whereas the chain runs below this conveyor.
  • the accelerator and the second conveyors are connected to a drive which drives them intermittently at a first speed corresponding to the speed of the first conveyor or at a second speed which is greater than this.
  • the acceleration conveyor and the second conveyor are driven at the first speed until the entire rubber strip is in the area of the conveyor-effective strand.
  • the products fed by the first conveyor are transferred to the second conveyor at an unchanged speed and are conveyed away by the latter.
  • the chain of the acceleration conveyor and the second conveyor are then accelerated to the second speed, as a result of which the products lying on the rubber bar and the products lying on the second conveyor are also accelerated and the products lying on the rubber bar are fed to the second conveyor without changing the overlap.
  • a gap is formed between the last product lying on the rubber strip in the conveying direction and the next product seen in the conveying direction.
  • the speed of the acceleration conveyor and of the second conveyor is then reduced again to the first speed before the now first product transported by means of the first conveyor reaches the end of the first conveyor.
  • This device is intended for chopping a stream of flakes and is not suitable for forming gaps anywhere in a stream of flakes.
  • DE-OS 38 31 742 Another device for forming a gap in a shingled stream is disclosed in DE-OS 38 31 742. This has two driven at the same speed, in belt conveyors offset and overlapping in height. The products fed by the first belt conveyor fall onto the second belt conveyor to form a new scale formation for further transport.
  • the gap-forming device has between the laterally spaced conveyor belts of the second belt conveyor, with perforated belt which can be driven at a lower speed with respect to the belt conveyors and which is guided over a suction trough and has passages in sections.
  • the perforated belt is driven so that the products falling on the section with the passages are held on the perforated belt and transported along with the subsequent products falling at a lower speed, whereas the leading products are formed by the second conveyor to form a gap with unchanged Speed are carried away.
  • the overlap of the products during the formation of the new scale formation is thus increased during the formation of gaps.
  • all products are conveyed again at the same speed.
  • the processing station downstream of the device has to be operated at a higher working speed during the gap formation.
  • the increase in the overlap of the products in an end section of the preceding, separated section of the shingled stream does not usually have to be brought back to the original size, since most downstream processing stations can also process shingled streams with a smaller distance between the leading edges or at least a certain tolerance thereof Allow distance.
  • This property of processing stations is exploited even more by increasing the mutual overlap of the products in the beginning area of the shed section following a gap.
  • the length of the gap formation device can be considerably shortened or the increase in the overlap of successive products can be reduced, and this with the same length of the gap to be formed.
  • the device shown in FIGS. 1-3 has a first conveyor 10 for supplying a shingled stream S, a gap formation device 12 connected downstream thereof for forming a gap in the shingled stream S and for feeding the shingled stream S to a downstream second conveyor 14.
  • first and second conveyors 10, 14 which are configured as belt conveyors in a generally known manner, only the end or beginning area is shown in FIG. 1, viewed in the conveying direction F.
  • the three belts 16 of the first conveyor 10 which run next to one another and parallel to one another are guided at the end which is effective for conveying around rollers 20 which are non-rotatably seated on a shaft 18, and the shaft 18 is freely rotatably mounted on a frame 22 designed in the manner of a bearing plate.
  • the three adjacent belts 16 'of the second conveyor 14, at the beginning of which, on a shaft 18', which is also freely rotatably mounted on the frame 22, are rotatably seated rollers 20 '.
  • the gap-forming device 12 downstream of the first conveyor 10 and upstream of the second conveyor 14 has a belt conveyor 24 with two conveyor belts 26 running parallel to one another and laterally spaced apart.
  • An endless conveyor belt 28 of an acceleration conveyor 30 runs between these conveyor belts 26.
  • the conveyor belts 26 are guided around deflection rollers 32 and 32 'and the conveyor belt 28 is guided around a deflection roller 34 and 34'.
  • the deflecting rollers 32 and 34 or 32 'and 34' each sit on a shaft 36 or 36 '. These shafts 36, 36 'are connected to one another by means of tabs 38 which are designed like end shields and extend laterally outside the conveyor belts 26 connected.
  • the shaft 36 as seen in the conveying direction F, at the entrance of the gap-forming device 12 is freely rotatably mounted on the frame 22, so that the gap-forming device 12 can be pivoted back and forth between an upper and a lower end position.
  • the drive for this pivoting movement takes place via piston-cylinder arrangements 40, which are only indicated schematically in FIG. 1.
  • the gap-forming device 12 In the upper end position, the gap-forming device 12 carries the scale flow S to an upper second conveyor 14 and in its lower end position to one in FIGS. 4-11 14 'designated lower second conveyor.
  • the gap formation device 12 thus also serves as a switch.
  • the conveyor belt 28 of the acceleration conveyor 30 has passages 42 in a section which corresponds approximately to the length of the conveyor-effective strand, ie approximately the length of its effective area, which are only indicated in the figures.
  • the conveyor-effective strand 28 'of the conveyor belt 28 slides over a suction trough 44 which extends essentially between the deflection rollers 34 and 34' and which can be connected via a suction line 46 to a vacuum source, not shown. Seen in a direction parallel to the conveying plane of the belt conveyor 24 and at right angles to the conveying direction F, it is only necessary to provide passages 42 in the area of the suction trough 44. As shown particularly well in FIG.
  • the deflection rollers 34, 34 'around which the conveyor belt 28 is guided are slightly smaller in diameter than the deflection rollers 32, 32' for the conveyor belts 26.
  • the conveyor 28 'of the conveyor belt 28, which is effective for conveying, is located thus slightly below the conveyor level defined by the conveyor belts 26. This has the consequence that if there are no passages 42 in the region of the Suction troughs 44 are located, or there is no negative pressure in the suction trough 44, the flat products 48 of the shingled stream S lying on the conveyor belts 26 with their lateral end regions not touching the conveyor belt 28 due to their inherent rigidity, as indicated by dash-dotted lines in FIG. 3, or only rest on it with a small part of their weight.
  • a speed difference between the conveyor belts 26 and the conveyor belt 28 thus does not influence the products 48 transported by the conveyor belts 26.
  • the latter are indicated schematically in FIG. 1 Profiling 50 provided.
  • the deflection rollers 32 are wedged on the shaft 36 in a rotationally fixed manner, whereas the deflection roller 34 provided between them is freely rotatably mounted on this shaft 36. Conversely, the roller 34 'is keyed non-rotatably on the shaft 36', whereas the lateral deflecting rollers 32 'are freely rotatably mounted on this shaft 36'.
  • the conveyor belts 26 are thus driven by rotating the shaft 36 and the conveyor belt 28 is driven by rotating the shaft 36 '.
  • the first conveyor 10 For the transport of the shingled stream S without the formation of a gap, the first conveyor 10, the conveyor belts 26 of the belt conveyor 24 and the second conveyor 14 are driven v1 at the same speed.
  • the acceleration conveyor 30 is stopped. If, on the other hand, a gap is to be formed in the shingled stream S, the first and second conveyors 10, 14 are driven further at unchanged first speed v 1, whereas the conveyor belt 28 the accelerator 30 is now driven at a second speed v2, which is greater than the first speed v1, and the two conveyor belts 26 are driven at a third speed v3, which is less than the first speed v1. Due to the difference between the second and third speeds v2, v3, a gap is formed in the shingled stream S. As soon as seen in the direction of conveyance F the first product 48 following the gap has reached the end of the gap-forming device 12 and has been transferred to the second conveyor 14, the conveyor belt 28 is shut down again and the conveyor belts 26 are driven again at the first speed v 1.
  • weight rollers 52, 52 ' which cooperate with the conveyor belts 26 of the belt conveyor 24 or with the belts 16' are provided, as is shown schematically in FIGS. 4-11.
  • a drive motor 54 is operatively connected via a schematically indicated first chain drive 56 to a drive shaft 58 rotatably mounted on the frame 22. This is coupled via a second chain drive 60, also only schematically indicated in FIG. 1, to the shaft 18 for driving the belts 16 of the first conveyor 10 and via a two-part third chain drive 62 to an intermediate shaft 64.
  • the intermediate shaft 64 is mounted on the tabs 38 between the shafts 36 and 36 '.
  • the two chains 62 'of the third chain drives 62 are guided around sprockets that are non-rotatably seated on a common sleeve 66, the sleeve 66 being freely rotatable on the shaft 36.
  • This shaft 36 is operatively connected via a fourth chain drive designated 68 to one part of a first clutch 70, the other part of which is seated on the intermediate shaft 64 in a rotationally fixed manner.
  • the first clutch 70 is activated, the shaft 36 is driven by the drive motor 54 via the drive shaft 58, the third chain drive 62, the intermediate shaft 64 and the fourth chain drive 68.
  • the translations are chosen so that the conveyor belts 26 driven by the shaft 36 rotate at the first speed v 1, at which the belts 16 of the first conveyor 10 are also driven.
  • One part of a second clutch 72 sits on the intermediate shaft 64 in a rotationally fixed manner.
  • the shaft 36 ′ is thus not driven, as a result of which the conveyor belt 28 of the acceleration conveyor 30 is stopped.
  • this second clutch 72 is activated, the conveyor belt 28 is driven at the second speed v2.
  • the transmission ratio between the intermediate shaft 64 and the shaft 36 ' is chosen such that the second speed v2 is greater than the first speed v1.
  • the drive shaft 58 is operatively connected via a sixth chain drive 76 to a chain wheel 78 which is seated on the shaft 36 via a schematically indicated freewheel 80.
  • the freewheel 80 is active in the conveying direction F, ie that the shaft 36 can rotate at a higher speed, but not at a lower speed than the chain wheel 78.
  • the translation between the drive shaft 58 and the sprocket 78 is selected such that when the first clutch 70 is switched off, ie when the freewheel 80 is inactive and the shaft 36 is driven by the sprocket 78, the conveyor belts 26 rotate at the third speed v 3, which is smaller is v1 as the first speed.
  • a seventh chain drive 82 for driving the second conveyor 14 is indicated in FIG. 1. This can be driven by means of its own motor, but it is also conceivable that the chain drive 82 couples the second conveyor 14 to the drive motor 54. The second conveyor 14 is driven at the same first speed v 1 as the first conveyor 10.
  • FIGS. 4-11 The mode of operation of the device shown in FIGS. 1-3 will now be explained with reference to FIGS. 4-11.
  • the device is shown in a simplified side view.
  • the same reference numerals are used for the same parts as in FIGS. 1-3, but these are only listed insofar as is necessary for an understanding of the figures.
  • this section has a greater density of the passages 42 than in the remaining region, in order to hold the product 48 to be separated from the subsequent product 48 particularly reliably.
  • weight rollers 52 and 52 ' are arranged to cooperate with the conveyor belts 26 of the belt conveyor 24 (not shown in FIGS. 1-3) and in the initial area of the second conveyor 14 with its belts 16'.
  • the shingled stream S supplied by the first conveyor 10 in the direction of conveyance F at the first speed v 1 is fed from the hatch forming device 12 to the upper second conveyor 14 at an unchanged speed.
  • the conveyor belts 26 of the belt conveyor 24 (Fig. 1-3), and the second conveyor 14 are also driven v1 at the first speed.
  • the passages 42 of the conveyor belt 28 are located in the area of the lower, non-conveying strand and there is pressure compensation in the suction trough 44.
  • the first clutch 70 is switched on and the freewheel 80 is active (see FIG. 1).
  • the second clutch 72 is also switched on, with the result that the conveyor belt 28 is now at the second speed v2 revolves, which is about 20% greater than the first speed v1.
  • the vacuum source which is indicated in FIG. 5 by an arrow in the suction line 46.
  • the vacuum is built up in the suction trough 44, all products 48 of the scale formation S are transported further at the first speed v 1.
  • the products 48 following the end of the section with the passages 42 and seen in the conveying direction and fed by the first conveyor 10 now become in the area of the gap-forming device 12 by the belt conveyor 24 at the third speed v3, which is about 20% lower than the first speed v1, further promoted.
  • the first clutch 70 is switched off, with the result that the freewheel 80 becomes inactive and the conveyor belts 26 are driven via the sixth chain drive 76 (cf. FIG. 1). Due to the difference between the second and third speeds v2, v3, the gap in the scale stream S is now formed in the area of the gap-forming device 12, as shown in FIGS. 2 and 6. In this working phase, the weight rollers 52, 52 'develop their full effect.
  • the weight roller 52 ensures the braking of the products 48 supplied by the first conveyor 10 at the first speed v 1 at the transition to the belt conveyor 24 to the third speed v 3 and presses them against the conveyor belts 26.
  • the gap formation is thus the Overlap of the individual products 48 increases according to the speed difference v1, v3 and the mutual distance between the leading and trailing edges is reduced accordingly.
  • the weight roller 52 'acts at the transition from the gap formation device 12 to the second conveyor 14.
  • the products 48 fed from the conveyor belt 28 at the second speed v2 to the second conveyor 14 become in the area of the weight roller 52' to the first speed v1 braked, whereby the overlap of the products 48 transported from the acceleration conveyor 30 at a higher speed to the second conveyor 14 increases or increases corresponding to the speed difference between the second speed v2 and the first speed v1 the distance between the leading and trailing edges is reduced.
  • a detector 84 indicated schematically in FIG. 7, for example a light barrier in the end region of the gap formation device 12, emits a signal to a control unit (not shown) as soon as the last product 48 of the section S 'separated from the supplied scale formation S by the gap has the effective range of Conveyor belt 28 leaves.
  • the gap-forming device 12 is pivoted like a switch into its lower end position, in which the part of the scale stream S which follows the gap is now fed to the lower second conveyor 14 '(FIG. 8).
  • the second clutch 72 is released as soon as the section of the conveyor belt 28 with the passages 42 is in the region of the lower, non-conveying strand and the pressure in the suction trough 44 is compensated for after the rearmost passages 42 seen in the conveying direction the area of the suction trough 44 have left.
  • the first clutch 70 is reactivated, which leads to the fact that the conveyor belts 26 begin to revolve at the first speed v 1.
  • the shingled stream S is now supplied with unchanged first speed v 1 to the second conveyor 14 ', which is also driven at this speed, and is fed from this to a further processing station, as shown in FIG. 9.
  • the conveyor belt 28 is accelerated to the second speed v 2 in exactly the same way by activating the second clutch 72 and the suction trough 44 is reconnected to the vacuum source in order to feed the existing products 48 in the area of the gap formation device 12 to the second conveyor 14 'at the speed v2.
  • the conveyor belts 26 are braked to the third speed v3 in order to further convey the products supplied by the first conveyor 10 at the first speed v1 at the lower third speed v3.
  • the gap-forming device 12 is pivoted back into the upper end position, in which the end again with the upper second conveyor 14 flees.
  • the conveyor belt 28 is shut down again (Fig. 11)
  • the negative pressure in the suction trough 44 is released and by activating the first clutch 70, the conveyor belts 26 now run again at the first speed v 1.
  • the second speed v2 is preferably about 20% greater than the first speed v1 and the third speed v3 is preferably about 20% less than the first speed v1.
  • the gap formation device 12 can be followed by a device in order to compensate for the overlap again.
  • the second conveyors 14, 14 ' are always driven at approximately the same first speed v 1, with the result that the processing speed of the downstream stations does not have to be changed for the gap formation.
  • the differences between the first and second or first and third speeds can also be greater or less than 20%, preferably the speed differences are between 10 and 50%, which should not constitute an absolute limit.
  • the device according to the invention is particularly suitable for forming gaps in scale streams of printed products such as newspapers, magazines and the like.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Attitude Control For Articles On Conveyors (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Containers And Plastic Fillers For Packaging (AREA)
  • Advancing Webs (AREA)

Claims (11)

  1. Dispositif de formation d'un intervalle dans un courant d'articles plats se chevauchant, en particulier d'articles d'imprimerie, avec un premier convoyeur (10) entraîné à une première vitesse (v1), au moins un deuxième convoyeur (14, 14') placé après celui-ci et un dispositif de formation d'intervalle (12) placé entre le premier et le deuxième convoyeur (10; 14, 14'), avec un premier transporteur (26) et un deuxième transporteur (30) parallèle au précédent, le premier transporteur (26) pouvant être actionné pour l'essentiel à la première vitesse (v1) pour transporter le courant en chevauchement (S) amené par le premier convoyeur (10) vers le deuxième convoyeur (14, 14'), un du premier ou du deuxième transporteurs (30; 26) pouvant être actionné pour former un intervalle à une deuxième vitesse (v2) plus grande que la première vitesse (v1), afin d'amener au deuxième convoyeur (14, 14') les articles (48) se trouvant, au début de la formation de l'intervalle, au niveau du dispositif de formation, l'autre des premier ou deuxième transporteurs (26; 30) pouvant être actionné au plus à la première vitesse (v1) afin de recevoir et transporter les articles (58) amenés par le premier convoyeur (58), caractérisé en ce que le deuxième convoyeur (14, 14') est actionné à environ la première vitesse (v1) afin de recevoir les articles (48) amenés par le transporteur (30; 36) actionné à la deuxième vitesse (v2) en augmentant leur chevauchement mutuel et de les transporter, et en ce que l'autre transporteur (26; 30), pendant la formation de l'intervalle, peut être actionné à une troisième vitesse (v3), plus petite que la première vitesse (v1), également afin de recevoir les articles (48) amenés par le premier convoyeur (48), en augmentant leur chevauchement mutuel et de les transporter.
  2. Dispositif selon la revendication 1, caractérisé en ce que deux deuxièmes convoyeurs (14, 14') sont prévus et en ce que le dispositif de formation d'intervalle (12) est constitué d'un dispositif de séparation pouvant pivoter en va-et-vient entre les deux convoyeurs (14, 14').
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les transporteurs sont constitués de convoyeurs à tapis (24, 30), le premier convoyeur à tapis (30) présentant une bande transporteuse (28) qui, dans une section correspondant approximativement à la longueur de sa zone active (28'), est munie de passages (42) pouvant être reliés dans la zone active (28') à une source de pression négative afin de placer et de maintenir les articles correspondants (48) en liaison de convoyage avec la bande transporteuse (28).
  4. Dispositif selon la revendication 3, caractérisée en ce que le brin actif en convoyage (28') de la bande transporteuse (28) se trouve au-dessous du plan de convoyage de l'autre convoyeur à tapis, ce dernier présentant de préférence de chaque côté de la bande transporteuse (28) une bande de transport (26).
  5. Dispositif selon la revendication 3 ou 4, caractérisé en ce que la bande transporteuse (28) peut être actionnée, lors de la formation de l'intervalle, à la deuxième vitesse (v2), l'autre convoyeur à tapis destiné au transport du courant en chevauchement pouvant être entraîné à environ la première vitesse (v1) et, pour la formation d'un intervalle, à la troisième vitesse (v3).
  6. Dispositif selon la revendication 5, caractérisé en ce que le brin actif en convoyage (28') de la bande perforée (28) est passée par-dessus un bac d'aspiration (44) pouvant être alimenté en pression négative au début d'une formation d'intervalle, et en ce que la section de la bande perforée avec les passages (42) se trouve au début d'une formation d'intervalle, au niveau du bac (44).
  7. Dispositif selon l'une des revendications 3 à 6, caractérisé en ce que la section avec des passages (42) couvre environ la moitié de la longueur de la bande transporteuse (28), qui est une bande sans fin.
  8. Dispositif selon l'une des revendications 3 à 7, caractérisé en ce que la bande transporteuse (28) et éventuellement les bandes de transport (26), au début et à la fin du dispositif de formation d'intervalle (12), sont passées autour de rouleaux (34, 42; 34', 32') reposant sur un premier et un deuxième arbres communs (36, 36'), le premier arbre (36) étant solidaire en rotation des rouleaux (32) correspondants associés aux bandes de transport (26) et le deuxième arbre (36') étant solidaire en rotation du rouleau (34') correspondant associé à la bande transporteuse (28), les arbres (36, 36') pouvant être entraînés au moyen d'un ensemble d'entraînement aux vitesses concernées (v1, v2, v3).
  9. Dispositif selon la revendication 8, caractérisé en ce que le premier arbre (36) est relié à un moteur d'entraînement (54) à la fois par l'intermédiaire d'un premier accouplement (70) et par l'intermédiaire d'une roue libre (80), active dans la direction de convoyage (F), les rapports entre le moteur d'entraînement (54) et le premier arbre étant tels que, lorsque le premier accouplement (70) est en prise et la roue libre (80) active, les bandes de transport (26) tournent environ à une vitesse correspondant à la première vitesse (v1) et, lorsque le premier accouplement (70) est hors prise et la roue libre (80) inactive, elles tournent à la troisième vitesse (v3), plus faible, le deuxième arbre (36') étant relié par un deuxième accouplement (72) au même moteur d'entraînement (54) pour entraîner la bande transporteuse (28) à la deuxième vitesse (v2) lorsque le deuxième accouplement (72) est en prise.
  10. Dispositif selon la revendication 9, caractérisé en ce que le premier convoyeur (10) et de préférence le deuxième convoyeur (14, 14') peuvent être entraînés au moyen du moteur d'entraînement (54).
  11. Dispositif selon la revendication 1 ou 3, caractérisé en ce que la deuxième vitesse (v2) est supérieure de 10 à 50 %, de préférence d'environ 20 %, à la première vitesse (v1), et la troisième vitesse (v3) est inférieure de 10 à 50 %, de préférence d'environ 20 %, à la première vitesse (v1).
EP91122241A 1991-01-25 1991-12-27 Dispositif de formation d'un intervalle dans un courant d'articles se chevauchant Expired - Lifetime EP0497002B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH23691 1991-01-25
CH236/91 1991-01-25

Publications (2)

Publication Number Publication Date
EP0497002A1 EP0497002A1 (fr) 1992-08-05
EP0497002B1 true EP0497002B1 (fr) 1995-05-24

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EP91122241A Expired - Lifetime EP0497002B1 (fr) 1991-01-25 1991-12-27 Dispositif de formation d'un intervalle dans un courant d'articles se chevauchant

Country Status (7)

Country Link
US (1) US5158278A (fr)
EP (1) EP0497002B1 (fr)
JP (1) JP3082008B2 (fr)
CA (1) CA2059247A1 (fr)
DE (1) DE59105589D1 (fr)
ES (1) ES2071903T3 (fr)
FI (1) FI920336A (fr)

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DE4122214A1 (de) 1991-07-04 1993-01-14 Bell & Howell Co Einrichtung zum wenden eines blattes unter gleichzeitiger aenderung der foerderrichtung
US5626336A (en) * 1992-02-20 1997-05-06 Fosber S.P.A. Storage and stacking device for sheets of laminar material
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US5158278A (en) 1992-10-27
FI920336A (fi) 1992-07-26
DE59105589D1 (de) 1995-06-29
CA2059247A1 (fr) 1992-07-26
EP0497002A1 (fr) 1992-08-05
FI920336A0 (fi) 1992-01-24
ES2071903T3 (es) 1995-07-01
JP3082008B2 (ja) 2000-08-28
JPH0577963A (ja) 1993-03-30

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