EP0120349A2 - Dispositif d'alimentation repérée en feuilles - Google Patents

Dispositif d'alimentation repérée en feuilles Download PDF

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Publication number
EP0120349A2
EP0120349A2 EP84102304A EP84102304A EP0120349A2 EP 0120349 A2 EP0120349 A2 EP 0120349A2 EP 84102304 A EP84102304 A EP 84102304A EP 84102304 A EP84102304 A EP 84102304A EP 0120349 A2 EP0120349 A2 EP 0120349A2
Authority
EP
European Patent Office
Prior art keywords
sheet
shoes
pulling
shoe
driven
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
EP84102304A
Other languages
German (de)
English (en)
Other versions
EP0120349B2 (fr
EP0120349A3 (en
EP0120349B1 (fr
Inventor
Willi Jeschke
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=6194849&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0120349(A2) "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 EP0120349A2 publication Critical patent/EP0120349A2/fr
Publication of EP0120349A3 publication Critical patent/EP0120349A3/de
Application granted granted Critical
Publication of EP0120349B1 publication Critical patent/EP0120349B1/fr
Publication of EP0120349B2 publication Critical patent/EP0120349B2/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
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/103—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop
    • B65H9/105—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop using suction means

Definitions

  • the invention relates to a method and a device for feeding sheets into a sheet-processing machine with a precise fit, the sheets being transported over the feed table experiencing their leading edge alignment with the aid of leading marks.
  • a slight ripple in the print carrier is often the cause of passport differences. This ripple may have arisen during paper manufacture, paper storage or only during the application process. Paper is known to be a hygroscopic material that tends to absorb moisture. There is even the possibility that the paper absorbs or releases moisture when the relative humidity of the atmosphere in the pressroom changes, which results in dimensional changes or tensions in the print carrier. Both can also be the cause of passport differences.
  • a sheet stretching device which is accommodated in the feed cylinder, that is to say takes effect in front of the first printing unit and can be adjusted while the machine is running. It is part of the gripper bridge of the feed cylinder. It stretches the already aligned sheet in such a way that the print carrier, which is more or less wavily accepted by the grippers, is tightened before being transferred to the printing cylinder.
  • the pre-tensioned gripper system is partially made free of force by lowering the gripper bar from the center using an adjustable curve.
  • the gripper bridge is divided in the middle so that the arches are stretched by moving the gripper bridge halves outward. Then the gripper bars are raised again and the stretched sheet is fed to the printing cylinder.
  • the object of the invention is to enable lateral alignment of the sheets without stops.
  • it is intended to influence edge-curving or tapering sheets before they are taken over by the gripper systems of the feed cylinder. It should be possible to slightly tension or compress the leading edge of the sheet without using additional mechanical elements.
  • this three-part object is achieved by the method steps of claim 1.
  • a device for carrying out the method is outlined by the characterizing part of claim 2.
  • the method according to the invention and the device operating according to it enable the front edge of the sheet to be influenced during the side alignment, that is to say before it is taken over by a gripper bridge. This is particularly important when producing multicolor prints.
  • the device according to the invention is suitable for the correction of wide or Narrower printing, specifically in the case of the production of multi-color prints with one or Multi-color offset printing machines.
  • the sheet is always subjected to the corrective force at the corners due to the side pulling shoes which are necessary for the side alignment and which can be adjusted to the side areas of the sheet. This does not happen at "high speed", ie the normal machine speed, but during the application process. After the application process, it is no longer necessary to release individual grippers for the purpose of stretching the leading edge of the sheet during the subsequent sheet transport.
  • a particularly advantageous embodiment of the invention consists in that both side pull shoes are driven and that the sliding stroke of at least one of the side pull shoes can be regulated. This allows the degree of stretching or compression of the leading edge of the sheet to be finely adjusted during the side alignment.
  • the side pulling shoes and their drive can be arranged so as to be adjustable transversely to the sheet conveying direction. It is also possible to regulate the displacement stroke of the side pullers while the machine is running.
  • a traverse 3 is provided in the area immediately in front of the front marks 2 which can be swung downwards and is fastened in the side walls of the sheet feeder, not shown.
  • the side pulling device 4 is provided on the drive and the other side pulling device 5 on the operating side of the sheet feeder.
  • Each side pulling device 4 or 5 has a side pulling shoe 6, the suction surface 18 of which protrudes through a gap 20 in the feed table 1 and lies in the plane of the surface of the feed table 1.
  • Both side pulling shoes 6 of the side pulling devices 4 and 5 can be displaced transversely to the sheet conveying direction within this gap 20 in a certain area. This provides the adaptation of the working position of the side pulling devices 4 and 5 to the sheet format to be processed in each case.
  • the side pullers 6 are connected to a vacuum generator via an air control device, not shown.
  • the side pulling shoes 6 are driven by a stepper motor 7, which is coupled with the associated side pulling shoe 6 without play via a fork 8 and a drive roller 9 which is rotatably arranged on the underside of the side pulling shoe 6.
  • the fork 8 is on the waves blunt 21 of the stepper motor 7 attached.
  • the associated side pulling shoe 6 is arranged to be easily movable in several flat cage bearings 10, but is guided precisely and can be moved back and forth.
  • a sensor 12 of a positioning device (not shown in more detail) is fastened on the drive side to a crossbar 13 so that it can be adjusted to the respective paper format.
  • the sensor 12 can also be provided on the operator side, namely when the alignment movement is to take place from the operator side in the direction of the drive side.
  • the sheet feeder according to the invention can therefore be switched from the drive-side to the operator-side system.
  • the air control then causes the sheet aligned with respect to the front edge to be sucked in in the region of the side pull shoes 6.
  • the suction force is such that static friction is generated on the suction surfaces 18 of both side pull shoes 6.
  • the stepper motors 7 start to work. They are controlled by the positioning device in such a way that they jointly move the sheet laterally, that is to say in this case away from the drive side in the direction of the operating side. In this case, the edge 16 of the sheet 11 on the drive side exceeds the measuring line 15 of the sensor 12.
  • the edge 16 and thus the entire sheet 11 has covered the constant distance 17.
  • the sheet 11 is aligned in a fitting manner with respect to its front and side edges. It is therefore completely irrelevant in which lateral position the sheet 11 was applied to the front marks 2 within a tolerance range, only the distance 17 from the sheet 11 is always covered after the pulse has been generated due to the measuring line 15 of the sensor 12 being exceeded by the sheet side edge 16 .
  • the control device can be coupled to the positioning device Sliding stroke of a stepper motor 11 or both stepper motors 11 can be changed optionally.
  • the positioning device controls the drive-side stepping motor 7 in such a way that it executes exactly the required displacement stroke so that the edge 16 of the sheet lying against the front marks 2 reaches the position 19 exactly.
  • the stepper motor 7 on the operating side of the sheet feeder is positioned due to the setting of the control device in such a way that the displacement stroke is slightly larger than that of the other side pulling shoe 6. This achieves an elongation of the leading edge of the sheet, thereby counteracting a waviness of the leading edge of the sheet.
  • the operator's side pulling shoe 6 can carry out a smaller displacement stroke than the side pulling shoe 6 located on the drive side if the positioning device is regulated accordingly. It is important in any case that the side pulling shoe 6 guiding the sheet moves the sheet edge 16 exactly into the desired position 19 after the pulse generation by the sensor 12.
  • the aligned sheet 11 is taken over by the gripper systems of the feed cylinder 14.
  • the regulation of the displacement stroke of the side pulling shoes 6 can take place while the machine is running. There is thus the possibility of fine adjustment and the compensation of wider or Narrow printing. However, it is possible to react quickly to a changing curl of the sheets without stopping the machine.
  • the regulation of the displacement stroke can of course take place in such a way that both driven side pulling shoes 6 cover the same displacement strokes.
  • the device according to the invention only effects a lateral alignment of the sheet lying against the front marks 2, without the aid of stops. The leading edge of the sheet is not stretched or compressed because it is superfluous. If both displacement strokes are increased or decreased, a Passer fine adjustment can be made.
  • the regulation is carried out in such a way that one pull shoe clearly over the other one runs different way.
  • the side pulling shoe 6 which is closest to the sensor 12 can be subjected to a lower suction force, so that the sheet is held only with sliding friction on its suction surface 18.
  • This weakly sucking side pulling shoe 6 is preferably not moved. However, it can also cover only a smaller displacement stroke.
  • the side pulling shoe 6 arranged on the query side holds the sheet firmly by means of static friction, and since it is controlled by the positioning device in such a way that the edge 16 of the sheet 11 reaches position 19, the other side pulling shoe 6 with the larger displacement stroke and the lower suction power a tightening of the front edge of the sheet, or a flatness of the sheet
  • the driven side pulling shoe 6 thus tightens the front edge of the sheet before the side edge 16 of the sheet 11 is pulled in the direction of the sensor 12. In this case too, the edge 16 of the sheet 11 exactly reaches its desired lateral position 19.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP84102304A 1983-03-26 1984-03-03 Dispositif d'alimentation repérée en feuilles Expired - Lifetime EP0120349B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833311197 DE3311197A1 (de) 1983-03-26 1983-03-26 Verfahren zum passgenauen zufuehren von boegen
DE3311197 1983-03-26

Publications (4)

Publication Number Publication Date
EP0120349A2 true EP0120349A2 (fr) 1984-10-03
EP0120349A3 EP0120349A3 (en) 1986-04-23
EP0120349B1 EP0120349B1 (fr) 1988-09-28
EP0120349B2 EP0120349B2 (fr) 1991-08-21

Family

ID=6194849

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84102304A Expired - Lifetime EP0120349B2 (fr) 1983-03-26 1984-03-03 Dispositif d'alimentation repérée en feuilles

Country Status (13)

Country Link
US (1) US4591143A (fr)
EP (1) EP0120349B2 (fr)
JP (1) JPS59186846A (fr)
AU (1) AU565428B2 (fr)
BR (1) BR8401351A (fr)
CA (1) CA1207348A (fr)
DE (2) DE3311197A1 (fr)
DK (1) DK161376C (fr)
ES (2) ES8505195A1 (fr)
GB (1) GB2136778B (fr)
MX (1) MX158295A (fr)
NO (1) NO841151L (fr)
ZA (1) ZA84808B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293598A (en) * 1994-10-01 1996-04-03 Heidelberger Druckmasch Ag Device for sheet alignment

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE924713C (de) * 1948-10-02 1955-03-07 Spezial Betonwaren Werke E G M Fuenfseitig geschlossener Hohlstein aus Beton mit schweren Zuschlagstoffen
ZA84910B (en) * 1983-03-26 1984-09-26 Heidelberger Druckmasch Ag Method for aligning sheets
DE3511897A1 (de) * 1985-04-01 1986-10-09 Mabeg Maschinenbau Gmbh Nachf. Hense & Pleines Gmbh & Co, 6050 Offenbach Vorrichtung zum seitlichen ausrichten von bogen
JPS62211253A (ja) * 1986-03-10 1987-09-17 Komori Printing Mach Co Ltd 枚葉印刷機の紙張り装置
JPH0643057Y2 (ja) * 1988-12-26 1994-11-09 株式会社名南製作所 板体の定規出し装置
DE4201886C1 (fr) * 1992-01-24 1993-07-08 Man Roland Druckmaschinen Ag, 6050 Offenbach, De
US5263699A (en) * 1992-06-03 1993-11-23 Selak Martin M Sheet feeder aligning apparatus
US5342039A (en) * 1992-12-17 1994-08-30 Xerox Corporation Sheet handling device and method for transporting sheets
DE4242731A1 (de) * 1992-12-17 1994-06-23 Heidelberger Druckmasch Ag Vorrichtung zum seitlichen Ausrichten von Bogen in Druckmaschinen
DE4406740B4 (de) * 1994-03-02 2005-01-27 Heidelberger Druckmaschinen Ag Vorrichtung zur Passerkorrektur in einer Bogendruckmaschine
US5893557A (en) * 1995-11-13 1999-04-13 Becmar Corp Printing press with electronic side guide
DE19822307B4 (de) * 1997-07-12 2008-12-24 Heidelberger Druckmaschinen Ag Verfahren zum paßgerechten Ausrichten von Bogen
CH693378A5 (fr) * 1999-04-09 2003-07-15 Bobst Sa Procédé de positionnement d'éléments en plaque dans la station d'introduction d'une machine de traitement et dispositif pour la mise en oeuvre du procédé.
DE10156800B4 (de) * 2000-12-19 2014-12-24 Heidelberger Druckmaschinen Ag Druckwerk
US6772688B2 (en) * 2002-04-05 2004-08-10 Agfa Corporation Imaging system with automated plate locating mechanism and method for loading printing plate
DE10315192A1 (de) 2002-04-25 2003-11-06 Heidelberger Druckmasch Ag Unabhängig ansteuerbare Seitenziehmarken zum seitlichen Ausrichten eines Bogens
TWI248415B (en) * 2003-09-23 2006-02-01 Bobst Sa Device for positioning the sheets into an introduction station of a processing machine
ES2331882T3 (es) * 2003-09-23 2010-01-19 Bobst S.A. Dispositivo de posicionamiento de hojas en una estacion de introduccion de una maquina de tratamiento.
EP1739039A3 (fr) * 2005-06-28 2009-04-15 Heidelberger Druckmaschinen Aktiengesellschaft Méthode et dispositif pour le transport de feuilles vers une machine d'impression
US10329109B1 (en) * 2018-04-03 2019-06-25 Xerox Corporation Vacuum shuttle with stitch and roll capabilities

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE496964C (de) * 1928-02-28 1930-04-30 Georg Spiess Seitenziehvorrichtung
DE583244C (de) * 1930-08-26 1933-08-30 Faber & Schleicher A G Vorrichtung zum Ausrichten gestaffelt liegender blattfoermiger Materialien
DE570755C (de) * 1932-03-25 1933-02-20 Rockstroh Werke Akt Ges Vorrichtung zum genauen Ausrichten von Bogen
DE617605C (de) * 1932-06-09 1935-08-22 Alfred Winkler Ausrichtevorrichtung
US2231914A (en) * 1937-10-02 1941-02-18 Hoe & Co R Sheet registering mechanism for printing machines
GB1172646A (en) * 1968-04-10 1969-12-03 Jack Evans Thompson A Sheet Registering Device.
DE2046602B2 (de) * 1970-09-22 1973-09-06 Koenig & Bauer AG, ,700 Würzburg Bogenzufuehrung bei druckmaschinen
US3860233A (en) * 1974-01-17 1975-01-14 Illinois Tool Works Vacuum operated sheet registration mechanism
JPS555983Y2 (fr) * 1974-08-26 1980-02-12
DE2604379C2 (de) * 1976-02-05 1982-02-25 M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach Verfahren zum Ausrichten von Bogen
US4184673A (en) * 1976-04-19 1980-01-22 Veb Polygraph Leipzig Kombinat Fur Polygraphische Maschinen Und Ausrustungen Method of and an apparatus for aligning sheets advancing in an overlapping array to a printing machine
DE2713994C2 (de) * 1977-03-30 1983-01-27 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Bogenhaltevorrichtung einer Bogen- Rotations-Druckmaschine, welche den Druckbogen geringfügig zu verformen vermag
DD135818B1 (de) * 1978-04-19 1981-06-24 Guenter Weisbach Einrichtung zum ausrichten von bogen in bogenverarbeitenden maschinen
DE2924636C2 (de) * 1979-06-19 1985-01-31 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Bogengreifervorrichtung für Gegendruckzylinder und Übergabetrommeln von Bogen-Rotationsdruckmaschinen
DE3036790C2 (de) * 1980-09-30 1982-11-11 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Bogenübergabetrommel für auf Schön- und Widerdruck umstellbare Bogenrotationsdruckmaschinen
FR2512743B1 (fr) * 1981-09-17 1986-03-21 Draperi Christian Machines offset feuilles avec rectifications et marge pneumatiques et electroniques, ainsi que disposition speciale des cylindres permettant le transfert des feuilles impression entierement terminee

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293598A (en) * 1994-10-01 1996-04-03 Heidelberger Druckmasch Ag Device for sheet alignment
US5624111A (en) * 1994-10-01 1997-04-29 Heidelbeger Druckmaschinen Ag Device for aligning sheets at the front lays of a sheet processing machine
GB2293598B (en) * 1994-10-01 1998-05-06 Heidelberger Druckmasch Ag Sheet processing machine with means for sheet alignment

Also Published As

Publication number Publication date
NO841151L (no) 1984-09-27
JPH0126978B2 (fr) 1989-05-26
CA1207348A (fr) 1986-07-08
GB2136778A (en) 1984-09-26
ZA84808B (en) 1984-09-26
MX158295A (es) 1989-01-20
DK161376B (da) 1991-07-01
JPS59186846A (ja) 1984-10-23
DK161376C (da) 1991-12-09
DK62784A (da) 1984-09-27
EP0120349B2 (fr) 1991-08-21
ES530954A0 (es) 1984-11-16
ES530953A0 (es) 1985-06-01
BR8401351A (pt) 1984-10-30
EP0120349A3 (en) 1986-04-23
DK62784D0 (da) 1984-02-13
DE3311197A1 (de) 1984-10-04
ES8505195A1 (es) 1985-06-01
ES8500600A1 (es) 1984-11-16
AU565428B2 (en) 1987-09-17
GB8406538D0 (en) 1984-04-18
US4591143A (en) 1986-05-27
EP0120349B1 (fr) 1988-09-28
DE3474288D1 (en) 1988-11-03
AU2468884A (en) 1984-09-27
DE3311197C2 (fr) 1988-07-14
GB2136778B (en) 1986-08-13

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