EP0528126B1 - Dispositif pour le rassemblement ou l'empilage de pièces plates sur une table d'empilage - Google Patents

Dispositif pour le rassemblement ou l'empilage de pièces plates sur une table d'empilage Download PDF

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Publication number
EP0528126B1
EP0528126B1 EP92109388A EP92109388A EP0528126B1 EP 0528126 B1 EP0528126 B1 EP 0528126B1 EP 92109388 A EP92109388 A EP 92109388A EP 92109388 A EP92109388 A EP 92109388A EP 0528126 B1 EP0528126 B1 EP 0528126B1
Authority
EP
European Patent Office
Prior art keywords
suction
cylinder
folding
stacking
workpieces
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
EP92109388A
Other languages
German (de)
English (en)
Other versions
EP0528126A1 (fr
Inventor
Fritz Ing. Grad. Achelpohl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Windmoeller and Hoelscher KG
Original Assignee
Windmoeller and Hoelscher KG
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 Windmoeller and Hoelscher KG filed Critical Windmoeller and Hoelscher KG
Publication of EP0528126A1 publication Critical patent/EP0528126A1/fr
Application granted granted Critical
Publication of EP0528126B1 publication Critical patent/EP0528126B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H31/00—Pile receivers
    • B65H31/04—Pile receivers with movable end support arranged to recede as pile accumulates
    • B65H31/06—Pile receivers with movable end support arranged to recede as pile accumulates the articles being piled on edge
    • 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
    • B65H29/68—Reducing the speed of articles as they advance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/92—Delivering
    • B31B70/98—Delivering in stacks or bundles
    • B31B70/986—Stacking bags by means of a rotary stacking drum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/42—Piling, depiling, handling piles
    • B65H2301/421—Forming a pile
    • B65H2301/4214—Forming a pile of articles on edge
    • B65H2301/42146—Forming a pile of articles on edge by introducing articles from above
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/19—Specific article or web
    • B65H2701/191—Bags, sachets and pouches or the like

Definitions

  • the invention relates to a device for collecting or stacking flat workpieces conveyed on a transport cylinder provided with holding tongs on a stacking table placed on the transport cylinder or on stacking arms placed on it, parallel to one another, preferably of bags or sacks provided on a folding plier cylinder and provided with glued bottoms , which is provided with a device that opens the holding or folding tongs before reaching the storage table and with a device that brakes the workpieces in such a way that the workpieces are placed on the stacking table at a lower speed than the peripheral speed of the transport or folding tong cylinder.
  • a plunger provided with elastic cushions and provided with elastic cushions are provided in a device of the type specified at the outset which is known from DE-B 10 54 818 in time with the placement of the workpieces on the circumference of the folding pliers cylinder be made in such a way that they exert a braking torque on the workpieces released by the folding pliers.
  • the braking force exerted by the tappets on the end region of the workpieces to be braked depends on the size of the pressure on the folding pincer cylinder, which runs frictionally under the braked workpiece, so that differently sized and opposite frictional forces act on the two sides of the workpiece Can distort workpiece, which is particularly disadvantageous if it is thin and / or double-walled, as is the case for example with bags or sacks.
  • a device which converts flat workpieces fed one after the other into a so-called scale formation on a further conveyor.
  • a transport wheel is provided which takes over the workpieces to be transferred and which is provided with a pair of fixed suction cups and a pair of movable suction cups.
  • the suction cups work together in such a way that the workpieces that are fed in and are to be transferred in scale form are first gripped by the fixed suction cups, which take them along with the peripheral speed of the transport wheel.
  • the fixed suction cups release the leading ends of the workpieces, which are then only held by the suction cups holding the trailing ends.
  • These suction cups carry out a controlled counter-rotating movement, which leads to a deceleration of the workpieces and has the purpose of decelerating the workpieces and placing them on the conveying scale belt at a predetermined distance.
  • the device according to the invention thus makes it possible to produce workpieces made of soft material or bags made of thin, lobed or wrinkled material with a high output, that is to say a high number of cycles, and to deposit them on the stacking pad almost without bumps.
  • control curve is expediently designed in such a way that it decelerates the suction cups towards zero or almost zero in the direction of the storage table.
  • the suction cups lift the workpiece from the transport cylinder so that they no longer follow the circular conveying path of the transport cylinder and can be placed on the stacking pad in the tangential direction to the transport cylinder. This lifting favors the setting down of the workpieces behind normal deflection fingers provided on the stacking pad, which are perpendicular to the stacking pad and engage in circumferential grooves of the transport cylinder.
  • the suction air supply to the suction devices is expediently controlled in such a way that it is interrupted when or shortly before the setting edges of the workpieces hit the stacking table.
  • the interruption expediently takes place at the point in time at which the suction devices have reached their lowest speed or even the speed zero relative to the stacking base.
  • these or with these or the suction shaft connected stop parts are provided, which rest under spring force on an abutment of the transport cylinder outside the effective range of the control curve.
  • the suction belt or belts partially engage in circumferential grooves of the transport cylinder, so that a trouble-free run-up of the leading edges of the workpieces released by the transport tongs onto the suction belt or belts is ensured.
  • the speed of the suction belts and the suction air supply to them can expediently be controlled.
  • the control system is such that the suction belt or belts, after sucking in the leading area of the workpieces, perform a movement which delays them, the suction air supply being interrupted at or shortly before the workpieces are placed on the stacking pad becomes.
  • a transport roller can be set on the transport cylinder, which feeds the workpiece after release by the holding tongs.
  • tubular web for example from a paper tubular web provided with a longitudinal adhesive seam
  • bags or sacks are produced, which are provided with folded and glued bottom folds.
  • the tubular web 1 can be provided with side gussets, the walls being provided with perforation lines offset from one another, so that after tearing off bag sections from the tubular web 1, sections result in which the open ends overlap one another.
  • the tubular web 1 is advanced by the pair of transport rollers 4 and promoted in the direction of arrow 2 on the table 3.
  • the two tear-off roller pairs 5, 6 then tear off sack or bag workpieces along the transverse perforation lines from the tubular web 1 when the cross perforation lines are between the roller pairs 5, 6.
  • the tube web is held by the pair of rollers 5, while the pair of rollers 6, in order to generate the tearing tension, rotates briefly at a higher speed.
  • the torn off sections are then provided on the folding pliers cylinder 30 with folded and glued bottoms and placed vertically on the stacking table 31 for their collection or stacking.
  • the folding pliers cylinder 30 is provided with three so-called folding beam abutments 12, 12 ', 12' 'which cooperate like pliers with the pivotable folding pliers jaws 13, 13', which can be pivoted about pivot axes 14 mounted on the folding pliers cylinder 30 and in the direction by springs, not shown are applied to their closed position.
  • actuating levers 15 which carry cam rollers 16 at the ends.
  • the cam rollers 16 run onto a control cam 17 which is fixed to the frame and which opens the folding tongs to release the folded bottoms before the bags or sacks are set down, as can be seen from the folding tongs 12 ', 13'.
  • a suction pipe 32 is pivotally mounted eccentrically to the axis of rotation 20 in the folding pinch cylinder 30, the pivot axis 19 of which extends parallel to the folding pin axis 20.
  • the suction pipe 22 is provided with an actuating lever 21 which carries a cam roller 22 at the end.
  • Suction pipes 18 are connected to the suction pipe 32 in a radial plane and carry suction nozzles 33 at the end.
  • the suction tubes 18 are connected to tension springs 25, the other ends of which are firmly connected to the folding pincer cylinder by means of pins 26 are. By means of the tension springs 25, the suction tubes 18 are held in abutment against folding jaw cylinders, fixed stops 24 or acted upon in the direction thereof.
  • the cam rollers 22 of the levers 21 actuating the suction cup run on control cams 23 over part of their rotation, the curve characteristic of the control curve 23 and the eccentricity of the axis 19 of the suction pipe 22 being selected such that the suction nozzles 33 emerge from the cylinder surface of the folding pliers cylinder 30 move out as soon as the suction nozzles 33 are located approximately vertically above the storage table 33, and then execute an approximately tangential movement which is perpendicular to the footprint of the storage table 31.
  • the storage table 31 is arranged on the folding pliers cylinder 30 below its horizontal diameter plane and has vertically projecting deflecting fingers 36 which engage in circumferential grooves of the folding pliers cylinder.
  • a folding knife cylinder 7 is provided on the folding pliers cylinder 30, which is provided with a folding knife 11 running along a surface line. Immediately behind the folding knife 11, the folding knife cylinder 7 is provided with a stamp 10, which removes a glue strip from a glue roller 8, which closes a glue box 9, and transfers it in format to the bag workpieces.
  • the bags provided and conveyed in this way on the folding pliers cylinder with folded and glued bottoms are then sucked in by the suction nozzles 33 when they continue to move when they emerge from the enveloping cylinder of the folding jaw cylinder due to the control of the suction tube 32 and the eccentricity of the axis of the suction tube 32.
  • the suction tubes 18 execute a movement which delays the sacks or bags being sucked in, so that they are deposited on the stacking table 31 at a speed which is delayed to zero or almost to zero.
  • the suction air supply to the suction cups 33 is controlled in such a way that they suck the bag workpieces approximately in an area in which the suction cups lie horizontally.
  • the folding tongs 12, 13 open so that the folded bottoms detach from the folding tongs cylinder and the suction cups take over the further delayed transport of the bags until they are placed on the tray table 31.
  • the approximately tangential, delayed conveyance of the sacks by the suction cups means that they are securely placed behind the deflecting fingers 36 on the support surface of the stacking table 31.
  • Suction cups are assigned to each of the three folding pliers, of which only one is shown in the drawing.
  • the vacuum acting on the suction tubes 18 is preferably activated shortly before the folding tongs open. The vacuum is then switched off again shortly before the bags are placed on the stacking table 31.
  • the folding pliers cylinder 30 is constructed in the same way as the folding pliers cylinder according to FIGS. 1 and 2 with regard to the folding pliers and their control.
  • the exemplary embodiment according to FIG. 3 differs from that according to FIGS. 1 and 2 in that, instead of the suction pipes pivotable about eccentric axes, a suction belt 40 is provided, the conveyor run 41 of which is via a suction box 42 is running.
  • a plurality of suction belts 40 are expediently provided, which, as can be seen from FIG. 3, engage in circumferential grooves of the folding pliers cylinder 30.
  • the ends provided with the folded bottoms run up after their release from the folding tongs onto the suction belt 40, whereby they are then sucked in by the conveying strands 41 as soon as they run over the suction boxes 42.
  • the suction belts 40 and the suction boxes 42 are controlled in such a way that the sucked-in bags are decelerated to zero or almost zero speed. Shortly before the bags are placed on the stacking table 31, the suction air supply to the suction boxes 12 is switched off.
  • the suction belt conveyors 40 are arranged stationary in the machine frame.
  • a spring-loaded transport roller 44 is set against the folding tongs cylinder 30.
  • the distance between the transport roller 44 and the upper deflection roller 45 of the suction belt conveyor 40 is greater than the length of a sack, so that proper conveyance is ensured until the leading ends of the sacks provided with the folded bottoms emerge on the suction belt conveyor 40.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Making Paper Articles (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Pile Receivers (AREA)

Claims (8)

  1. Dispositif pour le rassemblement ou l'empilage de pièces plates transportées sur un cylindre de transport (30) pourvu de pinces de retenue (12, 13) sur une table d'empilage (31) placée à côté du cylindre de transport (30) ou sur des bras d'empilage parallèles les uns aux autres placés à côté de celui-ci, de préférence de sachets ou de sacs fabriqués sur un cylindre à pinces de pliage (30) et pourvus de fonds collés qui est équipé d'une installation (16, 17) ouvrant les pinces de retenue ou de pliage (12, 13) avant d'atteindre la table d'empilage (31) et d'une installation (33) freinant les pièces de telle manière que les pièces sont déposées à une vitesse plus réduite que la vitesse périphérique du cylindre de transport ou à pinces de pliage (12, 13) sur la table d'empilage (31),
    caractérisé en ce que l'installation de freinage est constituée d'au moins deux tuyaux aspirants (18) portant aux extrémités des organes d'aspiration (33) qui sont logés de façon pivotante autour d'un axe (19) du cylindre de transport (30) s'étendant autour de l'axe de cylindre de transport (20) excentriquement et parallèlement à celui-ci et qui sont commandés de façon à exécuter un mouvement de pivotement retardant ce sachet aspiré, superposé à la direction de rotation, en ce que les tuyaux d'aspiration (18) ou l'arbre portant ceux-ci sont reliés à un levier (21) portant à l'extrémité un coulisseau ou un rouleau (22) qui roule sur une came de commande (23) solidaire du bâti et en ce que la caractéristique de courbe de la came de commande (23) et l'excentricité de l'axe (19) du tuyau d'aspiration (22) sont choisies de façon que les buses d'aspiration (33) sortent de la surface cylindrique du cylindre à pinces de pliage (30) dès que les buses d'aspiration (33) se trouvent à peu près verticalement au-dessus de la table d'empilage (33) et exécutent alors un mouvement à peu près tangentiel qui est perpendiculaire à la surface de positionnement de la table d'empilage (31).
  2. Dispositif pour le rassemblement ou l'empilage de pièces plates transportées sur un cylindre de transport (30) pourvu de pinces de retenue (12, 13) sur une table d'empilage (31) placée à côté du cylindre de transport (30) ou sur des bras d'empilage parallèles les uns aux autres, placés à côté de celui-ci, de préférence de sachets ou sacs fabriqués sur un cylindre à pinces de pliage (30), pourvus de fonds collés, qui est équipé d'une installation (16, 17) ouvrant les pinces de retenue ou de pliage (12, 13) avant d'atteindre la table d'empilage (31) et d'une installation (33) freinant les pièces de telle manière que les pièces sont déposées à une vitesse plus réduite que la vitesse périphérique du cylindre de transport ou à pinces de pliage (12, 13) sur la table d'empilage (31),
    caractérisé en ce que l'installation de freinage est constituée au moins d'une bande d'aspiration (40) placée à peu près tangentiellement au cylindre de transport (30) dont le brin convoyeur (41) passant sur un caisson d'aspiration (42) s'étend à peu près à angle droit à la table d'empilage (31).
  3. Dispositif selon la revendication 1, caractérisé en ce que la came de commande (23) est formée de façon à retarder les organes d'aspiration (33) en direction vers la table d'empilage (31) jusqu'à la vitesse 0 ou presque 0.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que l'amenée de l'air d'aspiration aux organes d'aspiration (33) est interrompue au moment ou bien juste avant que les arêtes de positionnement des outils heurtent la table d'empilage.
  5. Dispositif selon l'une des revendications 1 ou 3 et 4, caractérisé en ce que les tuyaux d'aspiration (18) ou des pièces de butée reliées à ceux-ci ou reliés à l'arbre portant ces tuyaux d'aspiration s'appliquent à l'extérieur de la zone d'action de la came de commande (23) sous la force d'un ressort à une contre-butée (24) du cylindre de transport (30).
  6. Dispositif selon la revendication 2, caractérisé en ce que la bande d'aspiration ou les bandes d'aspiration (40) s'engagent partiellement dans des rainures périphériques du cylindre de transport (30).
  7. Dispositif selon la revendication 2 ou 6, caractérisé en ce que la vitesse des bandes d'aspiration (40) et l'amenée de l'air d'aspiration à celles-ci peuvent être commandées.
  8. Dispositif selon l'une des revendications 2 ou 6 et 7, caractérisé en ce qu'un rouleau de transport (44) peut être appliqué au cylindre de transport (30) et qui transporte ensuite, en la poussant, la pièce après que celle-ci soit libérée par les pinces de retenue (12, 13).
EP92109388A 1991-07-15 1992-06-03 Dispositif pour le rassemblement ou l'empilage de pièces plates sur une table d'empilage Expired - Lifetime EP0528126B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4123399A DE4123399A1 (de) 1991-07-15 1991-07-15 Vorrichtung zum sammeln oder stapeln von flachen werkstuecken auf einem stapeltisch
DE4123399 1991-07-15

Publications (2)

Publication Number Publication Date
EP0528126A1 EP0528126A1 (fr) 1993-02-24
EP0528126B1 true EP0528126B1 (fr) 1995-12-06

Family

ID=6436183

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92109388A Expired - Lifetime EP0528126B1 (fr) 1991-07-15 1992-06-03 Dispositif pour le rassemblement ou l'empilage de pièces plates sur une table d'empilage

Country Status (4)

Country Link
US (1) US5308056A (fr)
EP (1) EP0528126B1 (fr)
JP (1) JP3354962B2 (fr)
DE (2) DE4123399A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007147728A1 (fr) * 2006-06-24 2007-12-27 Windmöller & Hölscher Kg Dispositif et procédé de disposition de pièces plates sur un plateau collecteur

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DE4318473A1 (de) * 1993-06-03 1994-12-08 Arsoma Druckmaschinen Gmbh Stapelvorrichtung
BR9501119A (pt) * 1994-03-18 1995-12-26 Xerox Corp Sistema inversor e empilhador de folhas
US5409201A (en) * 1994-03-18 1995-04-25 Xerox Corporation Integral disk type inverter-stacker and stapler with sheet stacking control
DE4417121C1 (de) * 1994-05-16 1995-10-05 Windmoeller & Hoelscher Vorrichtung zum Stapeln flacher Werkstücke, vorzugsweise von Papierbeuteln
DE29822224U1 (de) * 1998-12-14 1999-02-04 Pfankuch Maschinen GmbH, 22926 Ahrensburg Vorrichtung zum Sammeln und Übergeben von Papierzuschnitten o.dgl.
EP1352865B1 (fr) * 2002-04-12 2011-09-28 Kabushiki Kaisha Toshiba Dispositif d'empilage de feuilles
US7306222B2 (en) * 2003-05-14 2007-12-11 Goss International Americas, Inc. Sheet material feeder
US8302955B2 (en) * 2005-06-17 2012-11-06 Hewlett-Packard Development Company, L.P. Rotating vacuum fingers for removal of printing media from an impression drum
IL240822B (en) * 2014-09-23 2020-03-31 Heidelberger Druckmasch Ag Sheet feeding device

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Publication number Priority date Publication date Assignee Title
WO2007147728A1 (fr) * 2006-06-24 2007-12-27 Windmöller & Hölscher Kg Dispositif et procédé de disposition de pièces plates sur un plateau collecteur
DE102006029140B3 (de) * 2006-06-24 2008-01-03 Windmöller & Hölscher Kg Vorrichtung und Verfahren zum Anordnen von flachen Werkstücken auf einem Sammeltisch

Also Published As

Publication number Publication date
US5308056A (en) 1994-05-03
DE59204567D1 (de) 1996-01-18
DE4123399A1 (de) 1993-01-21
EP0528126A1 (fr) 1993-02-24
JP3354962B2 (ja) 2002-12-09
JPH05193808A (ja) 1993-08-03

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