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EP0071769B1 - Dispositif s'opposant à la courbure du bord frontal des feuilles dans un appareil de sortie d'une machine d'impression rotative de feuilles - Google Patents

Dispositif s'opposant à la courbure du bord frontal des feuilles dans un appareil de sortie d'une machine d'impression rotative de feuilles Download PDF

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Publication number
EP0071769B1
EP0071769B1 EP82106104A EP82106104A EP0071769B1 EP 0071769 B1 EP0071769 B1 EP 0071769B1 EP 82106104 A EP82106104 A EP 82106104A EP 82106104 A EP82106104 A EP 82106104A EP 0071769 B1 EP0071769 B1 EP 0071769B1
Authority
EP
European Patent Office
Prior art keywords
sheet
characterizing feature
accordance
air
housing block
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
Application number
EP82106104A
Other languages
German (de)
English (en)
Other versions
EP0071769A1 (fr
Inventor
Gerhard Pollich
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger Druckmaschinen 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6138436&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0071769(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0071769A1 publication Critical patent/EP0071769A1/fr
Application granted granted Critical
Publication of EP0071769B1 publication Critical patent/EP0071769B1/fr
Expired 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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/245—Air blast devices
    • B65H29/246—Air blast devices acting on stacking devices
    • B65H29/247—Air blast devices acting on stacking devices blowing on upperside of the sheet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles
    • B65H2406/1222—Nozzles adjustable impact angle
    • 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

  • the invention relates to a device in the delivery of sheet-fed rotary printing machines to counteract the curling of the leading edge of the sheet.
  • the curling of the sheet leading edge occurs immediately after the opening of the gripper which transports the sheet, which can lead to the corners of the sheet leading edge having already been rolled up before the paper sheet to be deposited comes to lie on the stack.
  • the result is a significant disturbance in the stack formation. This is all the more so if, on top of that, the printing speed is very high.
  • this is achieved in that in the front of the stack in the direction of the sheet in the vicinity of the sheet leading edge of the sheet to be blown blowing devices are provided, via which in each case a controlled blast air flow with one directional component in the sheet running direction and another directed towards the sheet center towards the sheet is that the underside of the sinking sheet is acted upon in the area of the curling sheet leading edge.
  • Edge unrollers are used, which are characterized in that a guide surface is provided on which the web is guided on its web side facing away from the roll-in side and that a device is also provided for generating an air flow that rolls out the roll-up edge, which is on the roll-in side of the web is directed essentially parallel to the guide surface outwards against the roll edge and extends in the direction of movement of the web along the roll edge over the guide surface.
  • this device is not suitable, if only because the paper sheets to be deposited cannot move down past the blowing device onto the stack.
  • the intended position of the blowing device 2 according to the invention can be seen from the side view or plan view of a sheet delivery 1 shown in FIGS. 1 and 2.
  • the sheet 3 coming from the last printing unit, not shown, is transported by means of the gripper 4 to its storage position above the stack 5 and then released.
  • the suction devices 6 arranged in the area of the trailing edge of the sheet brake the sheet 3, while the fans 7 arranged above the sheet 3 to be deposited accelerate the deposit by increasing the sinking speed.
  • blowing devices 2, 20 provided on both sides of the sheet 3 to be deposited are in the exemplary embodiments indicated advantageously attached to the lateral straight benders 8. Arranged near the leading edge 9 of the sheet, as shown in FIGS. 1 and 2, these blow in the direction of sheet travel 10 and towards the center of the sheet and essentially parallel to the plane of the sheet.
  • FIG. 3 shows a first embodiment of the blowing device 2 according to the invention.
  • a holding bracket 13 is fastened to the lateral straight bend pushers 8 by means of corresponding fastening means 11, 12.
  • the housing block 14 is attached as an essential part of the blowing device 2 by means of retaining screws 15.
  • the air supply regulating shut-off valve 17 is screwed into a threaded bore 16 of the housing block 14.
  • the hose 18 connected to it establishes the connection to the blown air source, not shown.
  • the air outlet bores 19 incorporated into the housing block 14 open into the threaded bore 16 and, together with this, ensure the desired guidance of the blown air stream 20.
  • FIG. 4 The side view of the device according to FIG. 3 shown in FIG. 4 serves to clarify the construction.
  • FIGS. 5 and 6 show a side view and a top view, respectively, of another design option for the blowing device 21 according to the invention.
  • the same is arranged on both sides of the paper sheet 3 on the lateral sheet straight pushers 8 (see FIGS. 1 and 2).
  • the housing block 22 is designed somewhat differently (circular in cross section) and is provided with a threaded pin 23). This protrudes through a longitudinal groove 24 attached to the lateral straight bend 8 and thus enables the rotation of the housing block 22 about its longitudinal axis 25 as well as a longitudinal displacement in or against the direction of sheet travel 10.
  • the fixed connection can be made by means of the locking screw 26 be produced between the blowing device 21 and the lateral straight bend 8.
  • the second configuration option is particularly suitable if the adjustability of the blowing direction and the distance of the blowing device 21 from the leading edge 9 of the sheet is considered useful.
  • the curling of the leading edge 9 of the sheet can be prevented from being stretched under the action of the blowing air flow 20, the effective blowing air flow 20 having a certain scattering area 28, particularly in the plane parallel to the sheet plane.

Landscapes

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

Claims (8)

1. Dispositif monté dans la sortie de rotatives à feuilles pour s'opposer au roulage du bord frontal (9) des feuilles, caractérisé en ce que des dispositifs souffleurs (2, 21) sont disposés dans la zone frontale de la pile (5), suivant le sens de déplacement des feuilles (10) et au voisinage du bord frontal (9) de ces dernières, et dirigent sur chaque feuille (3) un jet d'air commandé (20), avec une composante directionnelle suivant le sens de déplacement de la feuille (10) et une seconde composante orientée vers le milieu de la feuille (3), de sorte que la face inférieure de la feuille (3) descendant sur la pile est chargée au voisinage du bord frontal (9) s'enroulant.
2. Dispositif selon revendication 1, caractérisé en ce que le sens de soufflage est sensiblement parallèle au plan de la feuille et le jet d'air de soufflage (20) présente une certaine plage de dispersion (28), en particulier dans le plan de la feuille.
3. Dispositif selon revendication 1, caractérisé en ce que le jet d'air de soufflage (20) peut agir continûment ou à des intervalles de temps réguliers, adaptées à la vitesse de réception des feuilles.
4. Dispositif selon une quelconque des revendications 1 à 3, caractérisé en ce que le dispositif souffleur (2, 21) produisant le jet d'air de soufflage (20) est consitué par un corps (14, 22) muni d'un trou taraudé (16) et de trous de sortie d'air (19), dont l'alimentation en air se fait par un raccord cannelé (18) de flexible et un robinet d'arrêt (17), et qui est fixé sur les rangeurs latéraux (8) par des moyens de fixation (11, 12, 15, 26).
5. Dispositif selon la revendication 4, caractérisé en ce que le corps cylindrique (14) est sensiblement rectangulaire en coupe, un étrier de maintien (13) étant fixé par des vis (15) sur un côté et établissant la liaison avec le rangeur latéral (8) par l'intermédiaire d'une vis de fixation (11) et d'un écrou (12), et les trous de sortie d'air (19) étant situés sur une partie biseautée (27) de ce côté du rectangle.
6. Dispositif selon la revendication 4, caractérisé en ce que le corps cylindrique (22) présente une section circulaire et un goujon fileté (23), qui traverse une rainure longitudinale (24) du rangeur latéral (8) et établit à l'aide d'une vis de blocage 26 la liaison par sûreté de forme avec le rangeur latéral (8).
7. Dispositif selon revendication 6, caractérisé en ce que le dispositif souffleur (21), est mobile dans la rainure longitudinale (24) du rangeur latéral (8), suivant le sens de déplacement (10) des feuilles ou dans le sens inverse, et bloquable.
8. Dispositif selon revendication 6, caractérisé en ce que le dispositif souffleur (21) peut pivoter autour de son axe longitudinal (25) et ses bloquable.
EP82106104A 1981-08-01 1982-07-08 Dispositif s'opposant à la courbure du bord frontal des feuilles dans un appareil de sortie d'une machine d'impression rotative de feuilles Expired EP0071769B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813130623 DE3130623A1 (de) 1981-08-01 1981-08-01 Einrichtung in der auslage von bogenrotationsdruckmaschinen, um dem einrollen der bogenvorderkante entgegenzuwirken
DE3130623 1981-08-01

Publications (2)

Publication Number Publication Date
EP0071769A1 EP0071769A1 (fr) 1983-02-16
EP0071769B1 true EP0071769B1 (fr) 1985-09-18

Family

ID=6138436

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82106104A Expired EP0071769B1 (fr) 1981-08-01 1982-07-08 Dispositif s'opposant à la courbure du bord frontal des feuilles dans un appareil de sortie d'une machine d'impression rotative de feuilles

Country Status (5)

Country Link
US (1) US4561645A (fr)
EP (1) EP0071769B1 (fr)
JP (1) JPS5831831A (fr)
AT (1) AT384583B (fr)
DE (1) DE3130623A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702468A (en) * 1981-08-01 1987-10-27 Heidelberger Druckmaschinen Ag Device in the delivery of sheet-fed rotary printing machine for exhibiting curl formation on the leading edge of a delivered sheet
DE3535113A1 (de) * 1985-10-02 1987-04-23 Jagenberg Ag Bogenableger
DE3634400A1 (de) * 1986-10-09 1988-04-14 Heidelberger Druckmasch Ag Bogenausleger an rotationsdruckmaschinen
JP2503118Y2 (ja) * 1989-06-22 1996-06-26 株式会社小森コーポレーション 枚葉印刷機の排紙装置
FR2656571B1 (fr) * 1989-12-29 1992-05-07 Oce Graphics France Dispositif pour le guidage secondaire d'un support d'impression sur une machine a dessiner.
GB2255078B (en) * 1991-04-24 1994-11-23 Ricoh Kk Paper discharging apparatus
US5201514A (en) * 1992-04-06 1993-04-13 Xerox Corporation Apparatus for decurling a sheet
US5357327A (en) * 1992-04-06 1994-10-18 Xerox Corporation Sheet decurling system including cross-curl
US5153662A (en) * 1992-04-06 1992-10-06 Xerox Corporation Sheet decurling apparatus
DE29906505U1 (de) * 1999-04-13 1999-08-26 MAN Roland Druckmaschinen AG, 63075 Offenbach Ausleger für eine Bogenrotationsdruckmaschine
US7726649B2 (en) * 2005-06-07 2010-06-01 Xerox Corporation Air drag cooler for sheet transport apparatus
JP2007261804A (ja) * 2006-03-30 2007-10-11 Mitsubishi Heavy Ind Ltd 枚葉印刷機用排紙装置
JP4970127B2 (ja) * 2007-04-27 2012-07-04 デュプロ精工株式会社 紙受け装置
JP5783164B2 (ja) * 2012-03-02 2015-09-24 株式会社リコー 用紙排出装置及び画像形成システム

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1465385A (en) * 1919-07-12 1923-08-21 Hall Printing Press Company Sheet-delivery mechanism
USRE16779E (en) * 1923-07-07 1927-11-01 Apparatus por piling sheets op paper
GB284911A (en) * 1927-05-19 1928-02-09 George Edward Maxner Improvements in apparatus for piling sheets of paper and other light material successively delivered thereto
US1743921A (en) * 1927-12-17 1930-01-14 Claybourn Process Corp Method of drying freshly-printed sheets and apparatus therefor
US1902436A (en) * 1931-08-03 1933-03-21 Herman L Joachim Method of and apparatus for stacking sheets
US2299259A (en) * 1940-09-09 1942-10-20 Miehle Printing Press & Mfg Sheet delivery means
DE842647C (de) * 1950-08-26 1952-06-30 Maschf Augsburg Nuernberg Ag Auslegevorrichtung fuer Bogendruckmaschinen
GB901906A (en) * 1958-12-15 1962-07-25 Linotype Machinery Ltd Improvements relating to sheet delivery for printing machines
DE1253035B (de) * 1962-06-29 1967-10-26 Jagenberg Werke Ag Vorrichtung zum Trennen von ueberlappt angefoerderten von einem Querschneider ausgestossenen Bogen
FR2274527A1 (fr) * 1974-06-11 1976-01-09 Bertin & Cie Dispositif transporteur de lettres, plis postaux ou autres objets minces
US4073001A (en) * 1975-10-31 1978-02-07 Xerox Corporation Apparatus for neutralizing and registering an electrostatically charged sheet
JPS5589154A (en) * 1978-12-28 1980-07-05 Tokyo Ink Kk Blowing device of air between sheet
DD141150B1 (de) * 1979-02-14 1981-10-28 Hans Zimmermann Blaseinrichtung in bogenauslegern von bogenverarbeitenden maschinen
US4372550A (en) * 1981-04-30 1983-02-08 Woods Kenneth D Air flow delivery system

Also Published As

Publication number Publication date
DE3130623A1 (de) 1983-02-10
US4561645A (en) 1985-12-31
AT384583B (de) 1987-12-10
JPS6311262B2 (fr) 1988-03-12
EP0071769A1 (fr) 1983-02-16
ATA281882A (de) 1987-05-15
JPS5831831A (ja) 1983-02-24

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