EP0890535B1 - Bogenfördervorrichtung zur individuellen Handhabung und Fördern von gestapelten Bögen - Google Patents

Bogenfördervorrichtung zur individuellen Handhabung und Fördern von gestapelten Bögen Download PDF

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Publication number
EP0890535B1
EP0890535B1 EP98202275A EP98202275A EP0890535B1 EP 0890535 B1 EP0890535 B1 EP 0890535B1 EP 98202275 A EP98202275 A EP 98202275A EP 98202275 A EP98202275 A EP 98202275A EP 0890535 B1 EP0890535 B1 EP 0890535B1
Authority
EP
European Patent Office
Prior art keywords
sheet feeder
feeder device
suction
stack
elements
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
EP98202275A
Other languages
English (en)
French (fr)
Other versions
EP0890535A1 (de
Inventor
Alvaro Rossi
Marco Rossi
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.)
MAIERON NATALINA
Rossi Sabrina
ROSSI, ALVARO
ROSSI, MARCO
Original Assignee
Maieron Natalia
Rossi Alvaro
Rossi Marco
Rossi Sabrina
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 Maieron Natalia, Rossi Alvaro, Rossi Marco, Rossi Sabrina filed Critical Maieron Natalia
Publication of EP0890535A1 publication Critical patent/EP0890535A1/de
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Publication of EP0890535B1 publication Critical patent/EP0890535B1/de
Anticipated expiration legal-status Critical
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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
    • B65H3/00—Separating articles from piles
    • B65H3/08—Separating articles from piles using pneumatic force
    • B65H3/0808—Suction grippers
    • B65H3/0816—Suction grippers separating from the top of pile
    • B65H3/0825—Suction grippers separating from the top of pile and acting on the rear part of the articles relatively to the final separating direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/36—Separating articles from piles by separators moved in special paths, e.g. enclosing an area
    • B65H3/38—Separating articles from piles by separators moved in special paths, e.g. enclosing an area the paths not enclosing an area

Definitions

  • This invention refers to a sheet feeder device for the single handling and feeding of stacked sheets.
  • the industry processing paper in sheet form such as for instance the plastifying or printing industry, needs to be capable of handling large volumes of sheets.
  • These sheets are generally arranged in a stack and associated with the printing machine, the plastifying machine etc., to perform the work required by the particular treating process.
  • the sheets must therefore be picked up from the stack one at a time and conveyed to the next processing unit.
  • grabbing devices for a single sheet on top of a stack are known and generally designated as sheet feeders.
  • These sheet feeder devices are provided with arms which generally pick-up the single sheet by suction grabbing elements to lift it from the stack and shift it for example to a downstream processing or simply receiving unit.
  • the arm or arms move the relative suction grabbing devices toward the face of the sheet to be grabbed and transferred, using a vacuum or similar effect.
  • Some blowing nozzles are simultaneously activated to favor the detachment of the sheet from the underlying sheets in the stack, to be followed immediately by shifting the grabbed sheet toward the next unit.
  • DE-A-1 786 117 discloses a sheet feeder device according to the preamble of claim 1.
  • the purpose of the present invention is to achieve a sheet feeder device for the single handling and feeding of stacked sheets capable of overcoming the technical and economic problems generated by the known, particularly complex controlling and moving structure.
  • a further purpose is to produce a sheet feeder device for the single handling and feeding of stacked sheets, capable of handling them without error, with an absolutely uniform action of grabbing a single sheet from the stack and performing a fixed stroke, and also capable of operating at high speeds.
  • An alternative embodiment also provides for a further set of suction elements which are rigidly connected to said supporting structure and cooperate with said at least one set of oscillating suction elements.
  • Said first recessed cam assembly preferably includes an idle roller rigidly connected to said oscillating arm which fits into a cam-shaped recess carved out in a plate pulled into a rotating motion by the said positive mechanical transmission.
  • Such a device is particularly simple, non-vibrating and also capable of operating at high speeds.
  • a sheet feeder device for the single handling and feeding of stacked sheets built according to the invention is shown and designated as a whole by the numeral 11.
  • This device 11 comprises a box-like supporting structure 12 holding two groups of grabbing elements which act on the upper face of a sheet 13 to be picked up and transferred, placed at the top of a stack of sheets 14.
  • These grabbing elements generally comprise suction elements 15 and 16 performing this function by a vacuum or similar principle.
  • Some internal telescopic suction-cups are held in a housing 17 and activated to emerge from the same when a vacuum is created in the interior. Once these suction cups reach the sheet 13, the sheet grabbing motion is performed and the suction cups are simultaneously lifted.
  • a first set of grabbing elements comprises two suction elements 15 which are rigidly connected to the vertical shoulders 18 of the supporting structure 12.
  • the second set of grabbing elements comprises the suction elements 16 rigidly connected to the two rods 19 and carried by an arm 20 oscillating between at least one pair of extreme positions.
  • the second set of suction elements 16 can in fact oscillate between a grabbing position on top of the stack 14 and a releasing position of the single sheet 13, moved forward toward a next sheet processing or simply receiving unit.
  • Both the suction elements 15 and the suction elements 16 can be fitted with blowing nozzles 21 actuated to favor the detachment of the sheet 13 from the underlying sheets of the stack 14 during the picking-up process. Provision is also made for a cross beam 40 which supports some adjusting elements 41 set vertically before the stack 14.
  • the arm 20 is shaped to resemble an upturned U, hinged at the bottom of the U, placed at its top end, by shafts 22 to the shoulders 18 and oscillated by a first cam-equipped assembly.
  • a vertical branch 20a of this arm 20 is in fact free to rotate a roller 23 which fits into a cam-shaped recess 24 carved out in a plate 25, thus creating the first cam-equipped assembly.
  • the plate 25 is in turn rigidly connected to a shaft 26 supported at its extremities by bearings 27 provided inside the shoulders 18.
  • the shaft 26 carries a further plate 28, created for example by extending the plate 25 and having a smaller diameter, which presents a cam-shaped peripheral surface 29.
  • the latter surface 29 engages with a roller 30 supported on a lever 32 and free to rotate in 31, so as to create a second cam-equipped assembly.
  • This lever 32 is at one end hinged by a pin 33 to the shoulders 18, while its other end carries a rod 34, arranged as a bracket and turned toward the bottom.
  • This rod 34 rests on the stack 14 noting the presence of the sheets and possibly lifting of the stack, if any sheets are found missing at the height required for their pick-up.
  • the plates 25 and 28, or alternatively the only plate-type element identifying them are provided on the shaft 26, which carries, in its section close to one of the shoulders 18, a keyed-on first gear 35 that forms part of the group controlling the rotation of the same shaft 26.
  • This control or positive mechanical transmission group comprises a further idle intermediate gear 36 and a third gear 37 provided on a shaft 38 which draws its motion from an external motorized device, not shown.
  • the latter shaft 38 at its end opposite to that connecting to the motorized device, commands an air distributing and vacuum-actuating complex shown by the number 39, which determines the air emission and aspiration phases on both the suction cups 15, 16 and the blowing nozzles 21.
  • a sheet feeder device while acting and operating like a traditional sheet feeder device, solves all the technical problems typical of the complex and delicate structures of the device heretofore known.
  • This mechanical engagement also allows to achieve particularly high speeds of picking up and shifting the sheets, which cannot be reliably performed by the complex devices already known.
  • the air and vacuum actuating complex designated by the number 39 which determines the air emission and aspiration phases and needs to be connected to an appropriate pump, can simply be replaced by a venturimeter.
  • FIGS 3 and 4 clearly show the operation of the exemplified device according to the present invention.
  • the actuating of the two suction elements 15 causes the grabbing of a sheet 13 and its lifting when the suction-cups 15 are returned toward the top into their housings 17.
  • This motion evolves from the dashed and pointed position of the fixed suction cup 15 shown in Figure 3 to the lifted position pictured as a solid line, in which the sheet 13 shown as dashes and points is grabbed and picked-up by the same fixed suction-cup 15.
  • This phase is also aided by the nozzles 21, which assist the separation of the sheet 13 from the underlying stack 14.
  • the second suction cups 16 are in this phase placed in the position of Figure 4 in which they have moved the former sheet 13 toward a downstream sheet processing or simply receiving unit (dashes and points in Figure 4).

Landscapes

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

Claims (6)

  1. Bogenzuführungseinrichtung für die einzelne Handhabung und Zuführung von gestapelten Bögen, umfassend einen Trägeraufbau (12), der mindestens einen Satz Sauggreifelemente (15, 16) hält, der auf die obere Fläche eines zu greifenden und zu überführenden Bogens (13) wirkt, der oben auf einen Stapel Bögen (14) gesetzt ist, wobei mindestens ein Satz Saugelemente (16) zwischen einer Greifstellung auf dem Stapel und einer in Vorwärtsrichtung gelegenen Freigabestellung pendeln kann, wobei der mindestens eine Satz Saugelemente (16) unter einem Pendelarm (20) angeordnet ist, der an seinem oberen Ende (in 22) an Schultern (18) des Aufbaus (12) angelenkt ist, und wobei die Pendelbewegung durch eine erste Anordnung mit ausgespartem Nocken (23, 24) bestimmt ist, die ihre Bewegung von einer externen motorgetriebenen Einrichtung unter Verwendung eines zwangsläufigen mechanischen Getriebes (35 - 37) bezieht, dadurch gekennzeichnet, dass die erste Anordnung mit ausgespartem Nocken eine Leitrolle (23) umfasst, die starr mit dem Pendelarm (20) verbunden ist und in eine nockenförmige Ausnehmung (24) eingesetzt ist, die aus einer Platte (25) ausgeschnitten ist, die durch das zwangsläufige mechanische Getriebe (35 - 37) in eine Drehbewegung gezogen wird, wobei die erste Anordnung mit ausgespartem Nocken in einer Drehbewegung starr mit einer zweien Nockenanordnung verbunden ist, die das Anheben und Absenken eines in Richtung der Unterseite gewandten Stabes (34) betätigt, der auf dem Stapel Bögen (14) ruht und das Anheben des Stapels bewirkt, wenn irgendwelche Bögen in der für Ihre Aufnahme erforderlichen Höhe fehlen, wobei die zweite Nockenanordnung eine Platte (28) mit einer nockenförmigen Umfangsfläche (29) umfasst, die mit einer Rolle (30) in Eingriff steht, die an einem Hebel (32) frei zur Drehung (in 31) getragen ist, der wiederum starr mit einem ersten Ende einer Welle (33) verbunden ist und in Bezug auf den Aufbau (12) rotiert und den Stab (34) an seinem anderen Ende trägt.
  2. Bogenzuführungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sie einen weiteren Satz Saugelemente (15) aufweist, der starr mit dem Trägeraufbau (12) verbunden ist.
  3. Bogenzuführungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die erste und die zweite Nockenanordnung als ein einziges Stück in ihren Platten (25) und (28) hergestellt sind.
  4. Bogenzuführungseinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass der Pendelarm (20), der an seinem oberen Ende (in 22) an den Schultern (18) angelenkt ist, in der Form eines nach oben gewandten U ausgebildet ist.
  5. Bogenzuführungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Sauggreifelemente (15, 16) mit einem Luftverteilungs- und Vakuumerzeugungskomplex (39) verbunden sind und von diesem betätigt werden.
  6. Bogenzuführungseinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Sauggreifelemente (15, 16) mit einem Venturimesser verbunden sind und von diesem betätigt werden.
EP98202275A 1997-07-08 1998-07-07 Bogenfördervorrichtung zur individuellen Handhabung und Fördern von gestapelten Bögen Expired - Lifetime EP0890535B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI971618 1997-07-08
IT97MI001618A IT1293588B1 (it) 1997-07-08 1997-07-08 Dispositivo mettifoglio per la manipolazione e alimentazione singola di fogli impilati

Publications (2)

Publication Number Publication Date
EP0890535A1 EP0890535A1 (de) 1999-01-13
EP0890535B1 true EP0890535B1 (de) 2002-09-04

Family

ID=11377520

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98202275A Expired - Lifetime EP0890535B1 (de) 1997-07-08 1998-07-07 Bogenfördervorrichtung zur individuellen Handhabung und Fördern von gestapelten Bögen

Country Status (4)

Country Link
EP (1) EP0890535B1 (de)
DE (1) DE69807607T8 (de)
ES (1) ES2181119T3 (de)
IT (1) IT1293588B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116969218B (zh) * 2023-09-15 2023-12-26 江苏金典高科数码有限公司 纸张输送装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1786117A1 (de) * 1968-08-20 1971-11-18 Adamovske Strojirny Np Vorrichtung zum Antrieb einer Bogenzufuehrvorrichtung,insbesondere fuer Druckmaschinen
JPS517404B1 (de) * 1971-06-30 1976-03-08
DE4006635A1 (de) * 1990-03-03 1991-09-05 Georg Binnen Schleppdueseneinrichtung fuer schnellaufende bogenanleger
IT1251227B (it) * 1991-08-20 1995-05-05 Franco Pezzini Dispositivo mettifoglio per il trasferimento di fogli da una pila ad un piano ricevitore o di lavorazione

Also Published As

Publication number Publication date
DE69807607D1 (de) 2002-10-10
IT1293588B1 (it) 1999-03-08
DE69807607T8 (de) 2004-07-08
DE69807607T2 (de) 2003-06-05
ITMI971618A0 (de) 1997-07-08
ES2181119T3 (es) 2003-02-16
ITMI971618A1 (it) 1999-01-08
EP0890535A1 (de) 1999-01-13

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