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WO1996032349A1 - Procede et dispositif de suppression de piles de feuilles et de fourniture de feuilles a une installation de traitement a partir d'une pile de feuilles - Google Patents

Procede et dispositif de suppression de piles de feuilles et de fourniture de feuilles a une installation de traitement a partir d'une pile de feuilles Download PDF

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Publication number
WO1996032349A1
WO1996032349A1 PCT/DK1996/000170 DK9600170W WO9632349A1 WO 1996032349 A1 WO1996032349 A1 WO 1996032349A1 DK 9600170 W DK9600170 W DK 9600170W WO 9632349 A1 WO9632349 A1 WO 9632349A1
Authority
WO
WIPO (PCT)
Prior art keywords
stack
carrying
lifting device
spears
sheet members
Prior art date
Application number
PCT/DK1996/000170
Other languages
English (en)
Inventor
Ib Hjort Rasmussen
Original Assignee
Univeyor A/S
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univeyor A/S filed Critical Univeyor A/S
Priority to AU53332/96A priority Critical patent/AU5333296A/en
Publication of WO1996032349A1 publication Critical patent/WO1996032349A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/30—Supports or magazines for piles from which articles are to be separated with means for replenishing the pile during continuous separation of articles therefrom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • Method and apparatus Tor destacking and supplying sheet members from a stack to a processing apparatus
  • the present invention relates to a method for destacking and supplying sheet members from a stack to a processing apparatus, and of the type described in the introductory part of claim 1.
  • the feeding part of known apparatuses comprises normally a lifting device with a lifting platform, via which a pallet with a stack of sheet members may be supplied.
  • a pallet with the stack is placed on the lifting platform of the processing apparatus, for instance by means of a lift truck or fork lift.
  • the stack is moved on the lifting platform continuously up towards the top of the feeding part, where a suction discs device one by one takes the sheet members and successively feed them into the processing apparatus.
  • an extra lifting device comprising a pair of lifting bars may place a new stack under the almost emptied stack.
  • the lifting bars are placed in front of and behind said first lifting device.
  • spears which may consist of round, flat or profiled iron, through recesses in the wood pallet. These recesses may consist of spaces between the boards uppermost of the pallet.
  • the spears are placed over the lifting bars of the extra lifting device. The latter is now moved upwards, so that it via the spears supports and carries the last part of the first stack.
  • the lifting platform of said first lifting device is now moved downwards again, the empty pallet is removed, and a new pallet with stack is inserted.
  • the stack is moved upwards against the underside of the spears, so that the new stack also carries the last part of the previous stack.
  • the extra lifting device is lowered and the spears are then retracted by the operator - one by one - of the total stack, as the original or uppermost part of the stack is little (minor than 30 cm) and therefore has low weight.
  • the shift of stack is now ended.
  • This known method requires specially manufactured pallet, for instance wood pallets, and a quick and careful operator.
  • the invention has for its purpose to reduce or to eliminate entirely the times for shift and to avoid the special wood pallets, which are expensive and which only can be used for a certain type of apparatus.
  • the purpose is also to reduce the number of working stops and to avoid dangerous working situations arising because of the fact that the shifting mechanism may be difficult to secure or to screen without reducing the freedom of movement of the operator and without increasing the shifting time. It is furthermore the purpose to give the sheet members a gentle treatment, so that the waste is minimized.
  • the method according to the invention is distinctive in that the pre-adjusted stacks of sheet members by the preceding adjustment are placed in a predetermined position on the carrying plate, preferably close to the front edge thereof, that the stack in the feeder part of a first lifting device is moved upwardly for successive feeding of uppermost sheet in the stack to the processing apparatus, that an extra lifting device takes over and moves a last part of the stack up towards the top of the feeding part, as the stack in a per se known manner is supported temporarily on the extra lifting device by means of a number of carrying bars or spears, that a new stack is feeded to said first lifting device in the feeding part and is lifted upwards to engagement under said last part of the previous stack, and that the extra lifting device is moved downwards, before the carrying bars or spears are retracted, so that the last part of the previous stack being placed directly on the new stack of sheet members, etc.
  • the carrying plates may consist of simple rectangular plates of cheap, homogeneous material, such as oil-hardened asonite, metal or plastic.
  • the carrying plates may be provided with rows of preferably oval holes being adapted to a special lifting device comprising upwards directed lifting fingers adapted to be stuck upwards through said oval holes for lifting free a stack from the carrying plates - during successive destacking and feeding of sheet members from the stack, respectively.
  • the invention furthermore relates to an apparatus for use of said method and compris ⁇ ing a feeder part with a first lifting device, which apparatus is destinctive in that the first lifting device comprises a conveyor with mutual separated, endless carrier belts or straps being adapted to receive a pre-adjusted stack of sheet members on a carrying plate via a feeding conveyor placed before the feeding part, that a feeding device being placed just before the feeding part and comprising a horizontal carrying frame for an aggregate, which carrying frame being height adjustable between vertical carrying pillar, which aggregate between opposite carrying side pieces of the carrying frame may be moved forwards and backwards between a retracted position over the feeding conveyor and an advanced position over the feeding part, said aggregate comprises a number of carrying bars and spears being adapted to be placed under the carrying plate for the last part of the stack, an extra lifting device being adapted for temporary support of said carrying bars or spears and the last part of the stack until a new stack has been placed under the carrying bars or spears, and holding back means adapted to maintain the position of the remaining stack and the new
  • the apparatus according to the invention advantageously may be such provided, that the belt conveyor is such provided that the front end first and then the hindmost end thereof successively are lifted during the retraction of the carrying bars or spears in order to compensate the elsewise occuring difference in height of the total stack - during the shifting of stacks.
  • An alternative apparatus for practicing the method according to the invention comprises a feeder part with a primary lifting device and is distinctive in that the primary lifting device comprises a lifting frame with a number of crossbeams being placed between a stationary belt conveyor, and each of which being provided with a number of upwards directed lifting fingers being adapted to be stuck upwards through holes of a carrying plate, so that a stack of sheet members is lifted free from the carrying plate and is directly supported on the lifting fingers, while the stack - during destacking and supplying of sheet members, respectively - successively is lifted upwardly to a seconda- ry lifting device comprising carrying bars or spears being adapted to be placed under the stack, that is above the carrying plate, and to take over the further lifting movement of the remaining stack.
  • the primary lifting device comprises a lifting frame with a number of crossbeams being placed between a stationary belt conveyor, and each of which being provided with a number of upwards directed lifting fingers being adapted to be stuck upwards through holes of a carrying plate, so that a stack of sheet members is lifted
  • the alternative apparatus may furthermore be such provided that it in connection with the primary lifting device comprises a device for removal of said carrying plates to a magazine.
  • Fig. 1 shows a side view of an embodiment for an apparatus according to the in ⁇ vention
  • Fig. 2 shows a partial view of the apparatus cf. Fig. 1 - as seen from the top.
  • Fig. 3 shows first method step - insertion of a stack into the feeding part of the apparatus
  • Fig. 4 shows next method step, where a shift of stack begins
  • Fig. 5 shows the method step, where a new stack is inserted under the remaining stack
  • Fig. 6 shows the method step, where the flat, thin carrying plate is retracted
  • Fig. 7 shows the method step, where the extra lifting device returns to its starting position and is ready to take over the remaining stack from the first lifting device
  • Fig. 8 shows an alternative embodiment for a carrying plate for use by the method according to the invention
  • Fig. 9 shows an alternative embodiment for an apparatus according to the inven ⁇ tion - as seen from the side
  • Fig. 10 shows the apparatus shown in Fig. 9 - as seen from the line X - X, and
  • Fig. 11 shows the apparatus shown in Fig. 9 - as seen from the line XI - XI.
  • Fig. 1 the apparatus according to the invention and connected transport system are seen from the side. In the following it is described, how a stack 2 of sheet members 1 is handled before a processing apparatus 7.
  • a conveyor 15 is placed before a feeding device 3 . From this a stack 2 via the feeding device 3 is moved to a feeding part 5, in which the proper destacking takes place, as the individual sheet members from the top of the stack 2 is transferred to a processing apparatus 7.
  • the latter may consist of different apparatuses, for instance an apparatus for punching out box blanks or a printing apparatus.
  • the stack 2 Before the stack 2 arrives via the conveyor 15 an adjustment of the stack 2 is carried out by means of a special apparatus to secure a entirely precise and straight stack of sheet members 1 , and during this operation the stack 2 is placed on a flat, thin carrying plate 13 being adapted to the processing apparatus 7.
  • the carrying plate 13 substitutes the pallet or similar support surface, on which the sheet members are delivered, in order to enable handling with fork lift and the like.
  • the stack 2 of sheet members 1 may consist of flat, punched out sheet members to be printed in the processing apparatus 7 and possible to be folded or raised to a carton.
  • the wood pallet are substituted by flat, thin carrying plates 13 so-called “slip-sheets" consisting of a thin (2 - 6 mm) flat carrying plate 13, the 5 external shape and size of which is larger than the sheet members, as the carrying plate is adapted to the actual processing apparatus 7.
  • the carrying plates 13 may be manufactured from oil-hardened masonite, plastic or metal.
  • the feeding device 3 which in Fig. 2 is seen from the top, is mainly built up as an 10 aggregate 10 suspended in a portal rack with vertical supporting pillars 8, so that the feeding device is movable both in horizontal direction and in vertical direction, as the feeding device in vertical direction is supported by air cylinders - not shown, and in horizontal direction is displaceable arranged on horizontal carrying side members 7' of a carrying frame 17 suspended between the supporting pillars 8. 15
  • the carrying frame in front of the said air cylinders is mutually connected by means of equalizing chains lead around upper turning axles.
  • the carrying frame 17 for the aggregate 10 is at opposite sides parallel guided by means of chain wheels engaging with vertical racks 20 being secured on the inner sides of the supporting pillars 8.
  • the aggregate 10 may be raised, lowered or be placed in any equilibrium, that is where the aggregate seems to be almost "weightless”.
  • the aggregate 10 comprises carrying bars or spears 19, a holding back arrangemnt 20, 25 22 and a pushing device 21.
  • the spears 19, of which there are 10 pieces, are mounted on a cross slide suspended between two trolleys running on the inner sides of the carrying side members 7'. At the points of the carrying bars or spears 19, these are on the top side provided with upwards directed hooks, which - when the carrying bars or spears 19 are retracted from the stack 2 - may bring along the flat carrying plate 13 to 30 the rear of the stack 2.
  • the cross slide for the carrying bars or spears 19 is driven via toothed belt of the gear motors with more speeds, as the carrying bars or spears 19 are firmly mounted on the cross slide.
  • Aggregates 10 comprise as mentioned also a holding back arrangement with a 35 lowermost holding back means 22 and an uppermost holding back means 20, mounted on a common cross slide suspended between two trolleys running external on the carrying side members 7'.
  • the uppermost holding means 20 is such adapted that it in addition to the movement forwards and backwards furthermore may rock a front edge of a crossbeam up and down to avoid to hit the rear edge of the carrying plate 13, when the holding back means 20 is moved forward.
  • the holding back means 20 and 22 are also driven via toothed belts by means of a gear motor with more speeds.
  • a pneumatic braking device is placed adapted to grip around one of the flange of the carrying side member, so that the holding back means 20 and 22 may be locked in any horizontal position.
  • the pushing device 21 comprises an air cylinder without piston rod, also called a shuttle cylinder. Its length of stroke is such adapted that it can push a carrying plate 13 entirely to the rear of the aggregate 10 to a magazine or possible to a conveyor leading the carrying plates 13 back to said adjusting apparatus.
  • a stack 2 has just been supplied to a first lifting device in the feeding part 5, while next stack 2 stands ready under the feeding device 3, as both the latter and the lifting device 9 are in initial position.
  • the first lifting device 9, shown in Fig. 2 is provided with a belt conveyor.
  • the feeding part 5 is in its lower initial position; and the beams 11 of an extra lifting device are both lowered.
  • First lifting device 9 has just received or is ready to receive a stack 2 from the feeding device 3, where the aggregate 10 is lowered just over the beams 11 of the extra lifting device.
  • the carrying bars or spears 19 and the holding back means 20 and 22 (Fig. 2) are in their retracted position.
  • the pushing device 21 (Fig. 2) is in its initial position.
  • next method step Fig. 4
  • the first lifting device 9 is moved upwards in step with destacking of sheet members 1 by a suction disc device 24, which continues until the first lifting device 9 has reached the height of the beams 11 of the extra lifting device, that is when the flat, thin carrying plate 13 is placed just over the beams of the extra lifting device 11.
  • the carrying bars or spears 19 of the feeding device 3 is moved forward between the belts of the belt conveyor on the first lifting device 9, so that the spears 19 are placed over the beams 11 of the extra lifting device 11 , which now is moved upwards.
  • the first lifting device 9 is lowered to its initial position, so that the remaining stack 2 now is supported on carrying bars or spears 19 and the extra lifting device 1 1 , which both are moved upwards together, as the aggregate 10 of the feeding device now is in any equilibrium or - cf. the above-mentioned - is almost "weightless" .
  • the holding back means 20 and 22 of aggregate 10 is now moved forward, where the upmost rockable holding back means 20 first is lifted up over the rear edge of the carrying plate and lowered down onto said carrying plate, when the crossbeam is over the carrying plate 13.
  • the holding back means 20 and 22 rest against the back o the remaining stack 2 and the new stack 2, respectively, the holding back slide is locked to the carrying side members by means of said braking device.
  • the extra lifting device 11 of the feeding part 5 may now be lowered to its initial position (Fig. 6), and the carrying bars or spears 19 of the feeding device 5 may be re ⁇ tracted of the entire stack 2, as first the front edge of the belt conveyor 9 and suc ⁇ cessively the rear edge of the belt conveyor 9 is raised - during the retraction of the carrying spears 19 to the rear of the stack 2 - to compensate for the elsewise occuring difference in height between the front end and the rear end of the stack 2, which might cause irregularities for the suction disc device of the processing apparatus on the top of the stack.
  • the spears 19 are outside the stack 2 also the holding back means 20 and 22 are retracted to its initial position, Hereafter a new stack 2 may be moved in position on the feeding device 3.
  • the method may within the scope of the invention be modified without differring fromthe idea of the invention, as the invention may be used within other technical field than the cartonage industry, as high feeding speed within mechanical processing, handling of fragile items or manufacturing of information carriers is just as essential. And the flat, thin carrying plate does not need to be completely flat, as it due to friction reduced reasons either may have small projections, or there may be other holes or discontinuities.
  • the carrying bars or spears 19 and various holding back means may be provided more simply, as it and it causes a considerable simplification, that the carrying plates 25 may be retracted below in stead of above in connection with retraction of the carrying bars or spears 19.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)

Abstract

La présente invention concerne un procédé de suppression de piles de feuilles (1) et de fourniture de ces feuilles à une installation de traitement, à partir d'une pile de feuilles principalement pour l'industrie des papiers et cartons. Le procédé consiste à utiliser un organe d'alimentation (5) pour déposer sur des plateaux de transport (13) les feuilles (1) en piles pré-calibrées (2), puis à placer les feuilles (1) en piles pré-calibrées (2) obtenues lors de l'opération précédente, en un emplacement prédéterminé sur le plateau de transport (13), de préférence à proximité du bord avant du plateau. Le procédé consiste ensuite à faire monter la pile (2) se trouvant au niveau de l'organe d'alimentation (5) du premier appareil de levage (9) de façon à alimenter feuille à feuille l'installation de traitement (7) avec la feuille se trouvant dessus la pile (2). En l'occurrence, un appareil de levage supplémentaire (11) permet de saisir et remonter un fond de pile (2) en haut de l'organe d'alimentation, la pile (2) étant temporairement soutenue, selon une technique déjà connue, par des barres de transport ou des lames oblongues (19). Le procédé consiste alors à fournir à l'organe d'alimentation (5) du premier appareil de levage (9) une nouvelle pile (2) et à la relever jusqu'à ce qu'elle vienne en contact avec le fond de la pile (2) précédente. Le procédé consiste enfin à faire redescendre l'appareil de levage supplémentaire (11), puis à escamoter les barres de transport ou les lames oblongues (19), de façon que le fond de la pile (2) précédente se situe directement au-dessus de la nouvelle pile (2) de feuilles (1), et ainsi de suite.
PCT/DK1996/000170 1995-04-11 1996-04-10 Procede et dispositif de suppression de piles de feuilles et de fourniture de feuilles a une installation de traitement a partir d'une pile de feuilles WO1996032349A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU53332/96A AU5333296A (en) 1995-04-11 1996-04-10 Method and apparatus for destacking and supplying sheet memb ers from a stack to a processing apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK0438/95 1995-04-11
DK43895 1995-04-11

Publications (1)

Publication Number Publication Date
WO1996032349A1 true WO1996032349A1 (fr) 1996-10-17

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PCT/DK1996/000170 WO1996032349A1 (fr) 1995-04-11 1996-04-10 Procede et dispositif de suppression de piles de feuilles et de fourniture de feuilles a une installation de traitement a partir d'une pile de feuilles

Country Status (2)

Country Link
AU (1) AU5333296A (fr)
WO (1) WO1996032349A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998034866A1 (fr) * 1997-02-05 1998-08-13 Man Roland Druckmaschinen Ag Dispositif changeur de piles
EP0953529A1 (fr) * 1998-04-30 1999-11-03 MAN Roland Druckmaschinen AG Dispositif pour retenir des feuilles dans un changeur de pile situé dans un dispositif d'alimentation continue en feuilles
DE10330107A1 (de) * 2003-07-03 2005-04-28 Giesecke & Devrient Gmbh Kontinuierliches Vereinzeln von losem Blattgut
WO2009003032A3 (fr) * 2007-06-25 2009-07-02 Douglas Machine Inc Appareil et procédés permettant d'ériger un carton tubulaire replié
EP1923341A3 (fr) * 2006-11-20 2011-05-04 Marchesini Group S.p.A. Station pour alimenter des découpes tubulaires pliées à plat dans une machine de mise en boite

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180638A (en) * 1961-04-17 1965-04-27 Bobst Fils Sa J Continuous stock advancing apparatus
US4949953A (en) * 1987-11-19 1990-08-21 Jagenberg Aktiengesellschaft Device for stacking sheets
US5303911A (en) * 1991-09-02 1994-04-19 Heidelberger Druckmaschinen Ag Device for uniting a residual pile of sheets and a main pile of sheets

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3180638A (en) * 1961-04-17 1965-04-27 Bobst Fils Sa J Continuous stock advancing apparatus
US4949953A (en) * 1987-11-19 1990-08-21 Jagenberg Aktiengesellschaft Device for stacking sheets
US5303911A (en) * 1991-09-02 1994-04-19 Heidelberger Druckmaschinen Ag Device for uniting a residual pile of sheets and a main pile of sheets

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998034866A1 (fr) * 1997-02-05 1998-08-13 Man Roland Druckmaschinen Ag Dispositif changeur de piles
WO1998034862A1 (fr) * 1997-02-05 1998-08-13 Man Roland Druckmaschinen Ag Dispositif changeur de piles
US6547512B1 (en) 1997-02-05 2003-04-15 Man Roland Druckmaschinen Ag Stack changing device
US6676364B1 (en) 1997-02-05 2004-01-13 Man Roland Druckmaschinen Stack changing device
EP0953529A1 (fr) * 1998-04-30 1999-11-03 MAN Roland Druckmaschinen AG Dispositif pour retenir des feuilles dans un changeur de pile situé dans un dispositif d'alimentation continue en feuilles
DE10330107A1 (de) * 2003-07-03 2005-04-28 Giesecke & Devrient Gmbh Kontinuierliches Vereinzeln von losem Blattgut
US7874554B2 (en) 2003-07-03 2011-01-25 Giesecke & Devrient Gmbh Continuous separation of loose sheets
EP1923341A3 (fr) * 2006-11-20 2011-05-04 Marchesini Group S.p.A. Station pour alimenter des découpes tubulaires pliées à plat dans une machine de mise en boite
WO2009003032A3 (fr) * 2007-06-25 2009-07-02 Douglas Machine Inc Appareil et procédés permettant d'ériger un carton tubulaire replié

Also Published As

Publication number Publication date
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