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EP0939739A1 - Dispositif d'alimentation en feuilles du tambour transporteur de feuilles d'une machine a imprimer - Google Patents

Dispositif d'alimentation en feuilles du tambour transporteur de feuilles d'une machine a imprimer

Info

Publication number
EP0939739A1
EP0939739A1 EP97949860A EP97949860A EP0939739A1 EP 0939739 A1 EP0939739 A1 EP 0939739A1 EP 97949860 A EP97949860 A EP 97949860A EP 97949860 A EP97949860 A EP 97949860A EP 0939739 A1 EP0939739 A1 EP 0939739A1
Authority
EP
European Patent Office
Prior art keywords
sheet
gripper
transport element
feeding sheets
feed
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.)
Granted
Application number
EP97949860A
Other languages
German (de)
English (en)
Other versions
EP0939739B1 (fr
Inventor
Arndt Jentzsch
Reinhardt Nerger
Victor Hefftler
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
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 Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP0939739A1 publication Critical patent/EP0939739A1/fr
Application granted granted Critical
Publication of EP0939739B1 publication Critical patent/EP0939739B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F21/00—Devices for conveying sheets through printing apparatus or machines
    • B41F21/04—Grippers
    • B41F21/05—In-feed grippers
    • 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
    • B65H3/0833—Suction grippers separating from the top of pile and acting on the front 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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/10—Reciprocating or oscillating grippers, e.g. suction or gripper tables

Definitions

  • the invention relates to a device for feeding sheets from a stack of feed sheets to a sheet transport drum of a printing press.
  • the top sheet of a stack of sheets is gripped by vertical suction devices placed on the sheet / transported vertically / transferred to transport suction devices and transported in the direction of a feed table (DE 36 34 659).
  • the over the feed table e.g. Sheets transported with belts up to the feed marks are taken over by a pre-gripper equipped with a row of grippers / accelerated to machine speed and transferred to a sheet guide cylinder.
  • This arrangement requires a long feed table and a pivotal pivot point that is shifted in the direction of the sheet feeder and thus a large installation space. Furthermore, there is a short acceleration path of the pre-gripper and correspondingly unfavorable dynamic conditions.
  • the object of the invention is to shorten the installation space / distance between the feeder sheet stack / sheet transport drum / while simultaneously increasing the acceleration path of the pre-gripper.
  • the object is achieved by the characterizing part of the first claim.
  • Fig. 1 device for feeding sheets
  • FIG. 2 movement sequence transport element with integrated device for vertical movement
  • Fig. 3 sequence of movements transport element and separate device for vertical movement.
  • the uppermost sheet 2 lying on the feeder sheet stack 1 forms a first level 3 / feeder sheet stack level and the sheet 2 has a gripper edge 4 in the front edge area.
  • the gripper edge 4 usually extends from the front edge of the sheet measured in the direction of the sheet extension over a path of 3 to 5 mm.
  • the sheet 2 is gripped exclusively at this gripper edge 4 and transported from the stack of feed sheets 1 to a sheet transport drum 13.
  • the feeder sheet stack 1 is on the machine side, i.e. limited in the sheet running direction 10 / by a fixed stop 9 / which extends over the first level 3.
  • a transport element 8 designed as a suction oscillator is mounted in an oscillation point 7.
  • the transport element 8 is coupled to an oscillating drive (not shown) / for example a known curved drive.
  • the oscillation angle o ⁇ _ of the transport element 8 is less than 25 degrees / preferably 10 degrees.
  • the transport element 8 is equipped with lifting suction devices 15 which extend transversely to the sheet running direction 10 and form a suction strip.
  • a device for vertical movement 11 is integrated in the transport element 8.
  • the device for vertical movement 11 has the task of detecting the uppermost sheet 2 at the gripper edge 4 (sheet detection point 19) / separating it from the feeder sheet stack 1 and lifting it to a second level 6 which corresponds to the oscillating path of the transport element 8.
  • the suction cups 15 of the transport element 8 are multi-stage fensauger / preferably as a three-stage vacuum cleaner / designed.
  • the transport element 8 is designed / equipped with lifting suction devices 15 / preferably as a two-step suction device and the device for vertical movement 5 / in the form of a multi-step suction device (three-step suction device) / is arranged upstream of the transport element 8.
  • the sheet transfer from the device for vertical movement 5, which is arranged in a stationary manner above the leading edge area of the sheet, to the transport element 8 takes place in the second plane 6 at the sheet transfer point 21.
  • a feed table 12 Arranged in the sheet running direction 10 in front of the feeder sheet stack 1 is a feed table 12 which adjoins the stop 9 and rises in the sheet running direction.
  • the feed table level / the second level 6 and the oscillating path of the transport element are almost identical.
  • feed table 12 On the side facing the sheet transport drum 13, the feed table 12 is delimited by feed marks 16 extending transversely to the sheet running direction 10. These contact marks 16 are pivotable or lowerable and can be controlled from the sheet path.
  • the sheet 2 is detected by means of the device for vertical movement 11, which is designed as a three-stage suction device / which is integrated in the transport element 8 / in the first level 3 at the sheet detection point 19 / raised to the second level 6 / by the oscillating movement of the transport element 8 to transported to the feed marks 16 and released there to the sheet release point 17.
  • the device for vertical movement 11 which is designed as a three-stage suction device / which is integrated in the transport element 8 / in the first level 3 at the sheet detection point 19 / raised to the second level 6 / by the oscillating movement of the transport element 8 to transported to the feed marks 16 and released there to the sheet release point 17.
  • the three-stage suction device is then raised to the third level 18 / the transport element 8 swings back into its starting position over the front edge region of the uppermost sheet 2 and the three-stage suction device is lowered to the first level 3 (FIG. 2).
  • the sheet 2 is raised to the second level 6 by means of the device for vertical movement 11, which is designed as a three-stage suction device and is arranged upstream of the transport element 8 / in the first level 3 at the sheet detection point 19, and to the sheet transfer point 21 / above the sheet detection point 19 lies in the second level 6 to the lifting suction device of the transport element 8, which is designed as a two-stage suction device.
  • the three-stage suction device of the device for vertical movement 11 is then raised to a third level 18 and then lowered again to the first level 3. Due to the swinging movement of the transport element 8, the sheet 2 taken over is transported to the application marks 16 and released there to the sheet entry point 17. Thereafter, the lifting suction device 15 of the transport element 8, which is designed as a two-step suction device, is raised to a third level 18 / the transport element 8 swings back into its starting position and the two-step suction device is lowered to the second level 6 (FIG. 3).
  • the suction surface of the suction lifter 15 is arranged parallel or almost parallel to the plane of the feed table 12.
  • a pre-gripper 22 is arranged below the plane of the feed table 12.
  • the pre-gripper 22 is also designed as a suction oscillator and can be pivoted about a pivot point 5.
  • the drive of the pre-gripper / for example by means of a generally known curve drive is not shown.
  • the pivot point 5 of the pre-gripper / the sheet release point 20 and the pivot point 7 of the transport element 8 lie on a straight line or almost on a straight line.
  • the sheet transfer from the transport element 8 to the pre-gripper 22 and from the pre-gripper 22 to the sheet transport drum 13 takes place tangentially or almost tangentially.
  • the beginning of the oscillation path of the transport element 8 is also tangential or almost tangential to a parallel level of the first level (3) / the feeder sheet stack level.
  • the sheet 2 After the sheet 2 has been released by the transport element 8 at the sheet release point 20, the sheet 2 is aligned by means of alignment means (not shown) on the feed marks 16 arranged transversely to the sheet conveying direction and on side marks (not shown) arranged laterally on the feed table. After the feed marks have been controlled from the sheet path, the sheet is accelerated to machine speed by the pre-gripper 22 and transferred to the grippers of the sheet transport drum 13.
  • the pivot point 5 of the pre-gripper 22 is moved by the arrangement according to the invention - feed table rising in the sheet running direction, transport element designed as a suction transducer / pre-gripper designed as a suction transducer and connecting straight line pivot point 7 / sheet release point 17 / swing point 7 - in the sheet running direction to the sheet transport drum / which has greatly shortened the installation space and a longer acceleration path of the bow was achieved.

Landscapes

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

Abstract

L'invention concerne un dispositif d'alimentation en feuilles (2) du tambour transporteur de feuilles (13) d'une machine à imprimer à partir d'une pile de feuilles (1). L'invention vise une réduction de l'encombrement, c'est-à-dire de la distance pile de feuilles/tambour transporteur, tout en augmentant le trajet d'accélération de la pince (22). Pour ce faire, une table d'alimentation (12) ascendante en contact direct avec une butée (9) limitant la pile (1) est placée en amont de la pile de feuilles (1) dans le sens de déplacement des feuilles (2). Un élément transporteur (8) conçu sous forme de balancier et amenant la feuille (2) jusqu'aux taquets (16) de la table d'alimentation (12) est placé au-dessus de la bordure avant de la feuille en haut de la pile. Une pince (22) conçue sous forme de balancier et transportant la feuille (2) des taquets (16) jusqu'au tambour transporteur (13) est placée sous le plan de la table d'alimentation (12). Le point de rotation (7) de l'élément transporteur (8), le point de libération de la feuille/de transfert de la feuille de l'élément transporteur (8) à la pince (22) et le point de pivotement (5) de la pince (22) se situent sur une droite ou quasiment sur une droite.
EP97949860A 1996-10-29 1997-10-28 Dispositif d'alimentation en feuilles du tambour transporteur de feuilles d'une machine a imprimer Expired - Lifetime EP0939739B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19644945 1996-10-29
DE19644945A DE19644945A1 (de) 1996-10-29 1996-10-29 Einrichtung zum Zuführen
PCT/DE1997/002521 WO1998018703A1 (fr) 1996-10-29 1997-10-28 Dispositif d'alimentation en feuilles du tambour transporteur de feuilles d'une machine a imprimer

Publications (2)

Publication Number Publication Date
EP0939739A1 true EP0939739A1 (fr) 1999-09-08
EP0939739B1 EP0939739B1 (fr) 2001-05-30

Family

ID=7810319

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97949860A Expired - Lifetime EP0939739B1 (fr) 1996-10-29 1997-10-28 Dispositif d'alimentation en feuilles du tambour transporteur de feuilles d'une machine a imprimer

Country Status (3)

Country Link
EP (1) EP0939739B1 (fr)
DE (2) DE19644945A1 (fr)
WO (1) WO1998018703A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100391747C (zh) * 2004-02-25 2008-06-04 理想科学工业株式会社 模版印刷机
DE102006020907A1 (de) * 2006-05-05 2007-11-08 Man Roland Druckmaschinen Ag Bogendruckmaschine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE614043C (de) * 1933-01-29 1935-05-31 Vomag Betr S A G Bogenanlegevorrichtung fuer Druckmaschinen
US2698175A (en) * 1946-09-14 1954-12-28 Chandler & Price Co Sheet feeding mechanism
DE1091581B (de) * 1958-11-26 1960-10-27 Wilhelm Ritzerfeld Offsetdruckmaschine mit einer Steuervorrichtung fuer das Zusammenwirken der Druckelemente zur Zeilenauswahl
DE1124518B (de) * 1960-12-20 1962-03-01 Mabeg Maschb G M B H Bogenanleger mit Vorblaesern und pneumatischen Trennmitteln
CS253506B1 (en) * 1985-10-10 1987-11-12 Jaroslav Jiruse Loading equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9818703A1 *

Also Published As

Publication number Publication date
WO1998018703A1 (fr) 1998-05-07
EP0939739B1 (fr) 2001-05-30
DE59703696D1 (de) 2001-07-05
DE19644945A1 (de) 1998-04-30

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