EP0303053A2 - Dispositif de transfert de feuilles - Google Patents

Dispositif de transfert de feuilles Download PDF

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Publication number
EP0303053A2
EP0303053A2 EP88110921A EP88110921A EP0303053A2 EP 0303053 A2 EP0303053 A2 EP 0303053A2 EP 88110921 A EP88110921 A EP 88110921A EP 88110921 A EP88110921 A EP 88110921A EP 0303053 A2 EP0303053 A2 EP 0303053A2
Authority
EP
European Patent Office
Prior art keywords
sheet
printing
feed table
cylinder
printing unit
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
EP88110921A
Other languages
German (de)
English (en)
Other versions
EP0303053A3 (en
EP0303053B1 (fr
EP0303053B2 (fr
Inventor
Hermann Fischer
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.)
Manroland AG
Original Assignee
MAN Roland 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=6333561&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0303053(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0303053A2 publication Critical patent/EP0303053A2/fr
Publication of EP0303053A3 publication Critical patent/EP0303053A3/de
Publication of EP0303053B1 publication Critical patent/EP0303053B1/fr
Application granted granted Critical
Publication of EP0303053B2 publication Critical patent/EP0303053B2/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
    • B65H9/16—Inclined tape, roller, or like article-forwarding side registers
    • B65H9/163—Tape
    • 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

Definitions

  • the invention relates to a device for transferring sheets to a printing unit of a sheet-fed rotary printing press having at least one plate cylinder and one impression cylinder.
  • the invention has for its object to provide a device of this type which, with a simple structure with a few moving sheet conveying elements, can supply the printing unit with a large number of sheets per unit of time in register, thus enabling the printing press to be operated at very high speeds.
  • the printing unit shown in FIG. 1, designated overall by 1, comprises a plate cylinder 2, a blanket cylinder 3 and a printing cylinder 4.
  • the printing cylinder 4 has twice the diameter of the cylinders 2, 3 and carries two gripper systems 51, 52 an offset printing unit.
  • the invention is not limited to use in offset printing units, but rather can also be used in any other type of printing unit, that is to say high-pressure or gravure printing units.
  • the printing press further comprises a feed table 5, to which the sheets are fed individually in the known manner, not shown, in the direction of arrow a.
  • a feed table 5 to which the sheets are fed individually in the known manner, not shown, in the direction of arrow a.
  • several conveyor belts 6, 7, 8, 9 are provided, each of which runs over two deflection rollers 10, 11 and tensioning rollers 12, 13, at least one of the deflection rollers 10, 11 is driven, in such a way that the upper run of the conveyor belts runs in the direction of arrow b.
  • the conveyor belts 6 to 9 thus run at an acute angle to the feed and conveying direction of the sheet, which is indicated by the arrow a.
  • the deflection rollers 10, 11 are expediently fastened with the tensioning rollers 12, 13 to a carrier 14 which is rotatably mounted about an axis 15 by the acute angle between the conveying direction of the sheet, arrow a, and the transport direction of the conveyor belts 6 to 9, Arrow b to be able to adjust.
  • a side mark 16, 17 is firmly attached on both sides.
  • the conveyor belts 6 to 9 guide each sheet against the side mark 16 with a movement component directed transversely to the conveying direction a and thereby effect a side alignment of the sheet during its transport. Due to the rotatable arrangement of the carrier 14, there is also the possibility of guiding the sheet against the side mark 17 and aligning it laterally there.
  • a movement component directed transversely to the conveying direction can also be given to the sheet in that in addition to conveyor belts or conveying rollers rotating in the conveying direction, air nozzles blowing obliquely thereto or an additional conveyor belt rotating obliquely or transversely thereto are provided.
  • a conveyor roller 18 is arranged in the feed table, which extends over the entire width of the feed table 5, or individual conveyor rollers located next to one another are installed.
  • a coil spring is wound around the axis 19 of the conveyor roller 18, one end of which is connected to a fixed part of the feed table 5, while the other end is fastened to the conveyor roller 18.
  • the coil spring tends to rotate the conveyor roller 18 in the opposite direction of the arrow c.
  • a disk 21 is attached, to which one end of a rope 22 is connected and on which part of the rope can be wound.
  • the other end of the rope 22 is attached to a lever 23 which is pivotable about an axis 24.
  • Each lever 23 carries a roller 25 which is held in contact with a control disk 28 by means of a compression spring 27 which is supported on a fixed circuit board 26 and engages with the other end on the lever 23.
  • the two control disks 28 are firmly seated on a shaft 29 which is driven synchronously with the machine speed.
  • this drive another drive which alternately accelerates and decelerates the conveyor roller can be used.
  • a plurality of pivot levers 31 are fastened to a continuous axis 30, on the free end of which a pressure roller 32 is each freely rotatably mounted.
  • the axis 30 is in turn controlled synchronously with the machine speed in such a way that the pressure rollers 32 are temporarily pressed against the conveyor roller 18 and are temporarily lifted from the latter.
  • a pre-alignment front mark 33 is pivotably mounted on the feed table in a known manner, which consists of a plurality of stops which are distributed over the width of the feed table.
  • An upper guide drum 34 with a gripper system 49 and a front mark 50 is arranged above the end of the feed table 5.
  • the diameter of the upper guide drum 34 is smaller than the diameter of the plate cylinder 2, since the upper guide drum has a lower average peripheral speed than the plate cylinder 2 or the printing cylinder 4 rotating at the same peripheral speed due to the delay in the feeding speed of the sheets, but after every half a turn of the printing cylinder 4 or one revolution of the plate cylinder 2 and one revolution of the upper guide drum 34, the gripper system 49 of which must face one of the gripper systems 50, 51 for sheet transfer.
  • the top guide drum can also be designed with two gripper systems. Then their diameter increases accordingly.
  • the upper guide drum 34 is firmly seated on a shaft 35, on which a pinion 36 is also placed.
  • the pinion 36 meshes with a gear 37, which is placed together with a support plate 38 on a shaft 39 parallel to the shaft 35.
  • the support disk 38 carries four driver rollers 40 to 43.
  • the driver rollers interact in pairs with the two side flanks of a raised spatial control cam 46.
  • the parts 38 to 46 form a non-uniformly translating gear, which is the transfer drum 34 continuously accelerated from a low peripheral speed to a high peripheral speed, briefly remained at this high peripheral speed, then decelerated and then briefly remained at the low peripheral speed.
  • the control cam 46 is placed on a main drive shaft 47 of the printing press.
  • the main drive shaft 47 also carries a bevel gear 48 per printing unit, by means of which the cylinders 2 to 4 are driven in a manner known per se, not shown, via downstream gear wheels.
  • the ropes 22 therefore begin to unwind from the disks 21 and accelerate the conveyor roller 18 in the direction of arrow c.
  • the control shaft 30 pivots the lever 31 and thereby brings the pressure roller 32 to bear on the sheet.
  • the control disks 28 are now mounted so eccentrically that they deflect the levers 23 by increasing paths when the shaft 29 is rotated further and thus accelerate the conveyor roller 18 and consequently also the arc.
  • the clamping of the sheet between the conveyor roller 18 and the pressure rollers 32 ensures that, regardless of its strength and ripple, its leading edge aligned with the pre-alignment mark 33 is moved to the transfer drum 34 without the risk of misalignment.
  • the sheet reaches the end of the feed table 5 at a speed which is slightly higher than the peripheral speed of the transfer drum 34 at this moment, the sheet runs into the opened gripper system 49 and comes to rest against the front mark 50. The grippers then close of the gripper system 49. The sheet thus runs to the front mark 50 at a speed which is lower than the speed of the sheet during printing. A rebound of the perforation of the sheet can therefore be avoided despite a very high machine speed. Furthermore, even when it is removed from the feed table 5, there is no need to fear that it will entrain the following sheet.
  • the transfer drum 34 is accelerated by means of the non-uniform transmission gear 38 to 46 until the peripheral speed of the transfer drum 34 is approximately equal to the peripheral speed of the printing cylinder 4.
  • the non-uniformly geared transmission 38 to 46 is expediently designed such that the transfer drum 34 is still slightly accelerated when the sheet transfer begins. This ensures that a tooth flank change in the drive of the transfer drum 34, which disrupts the exact transfer of the sheet, is avoided.
  • the grippers of the gripper system 49 of the transfer drum 34 now transfer the sheet to the grippers, for example of the gripper system 52 of the printing cylinder 4, which rotates at a constant high speed.
  • the larger diameter of the printing cylinder 4 has the advantage that the path available for the sheet transfer from the gripper system 49 to the gripper system 51 or 52 is longer than when transferring to a printing cylinder of smaller diameter and only one gripper system. An even longer transfer path can be achieved if the transfer drum is also designed with two gripper systems on the circumference and a correspondingly larger diameter.
  • the non-uniformly converting gear 38 to 46 delays the rotation of the transfer drum 34 until it in turn reaches a peripheral speed which is slightly below the speed at which the next sheet is fed from the feed table 5.
  • the same feed table 5 with the conveying roller 18, the pressure rollers 32 and the pre-alignment front mark 33 can also be used, which is also provided in the first exemplary embodiment.
  • a pressure cylinder 60 with a front mark 59 and a gripper system 61 which fixes the sheet to this mark.
  • the pressure cylinder 60 seated on a shaft 62 interacts with a blanket cylinder 63 which sits on a shaft 64.
  • the blanket cylinder 63 is in turn set against a plate cylinder 65 on a shaft 66.
  • the cylinders 60, 63 and 65 are driven by a main drive shaft 67.
  • a bevel gear 68 which meshes with a further bevel gear 69, is placed on this.
  • a pinion 70 is fixedly connected to the bevel gear 69 and engages in a gear 71.
  • the gear wheel 71 is seated on a shaft 72 on which a transport drum 73 is fixed.
  • the transport drum 73 provided with grippers serves to remove the sheets from the printing cylinder 60.
  • the gear 71 in turn meshes with a gear 74 which is loosely rotatably mounted on the shaft 62 of the printing cylinder 60.
  • the gear 74 is in engagement with another wider gear 75, which is firmly placed on the shaft 64 of the blanket cylinder 63.
  • the gear 75 is also in engagement with both a gear 76, which is firmly seated on the shaft 66 of the plate cylinder 65, and a gear 77, which is firmly attached to the shaft 62 and has no teeth in a region 78.
  • a support plate 79 is also placed, which carries a driving roller 80.
  • the driving roller 80 can interact with a spatial control cam 81 which is fixedly connected to a bevel gear 83 via a shaft 82.
  • the bevel gear 83 meshes with a further bevel gear 84 placed on the main drive shaft 67.
  • the control cam 81 of the non-uniformly geared transmission 79 to 81 is designed such that it entrains the driving roller 80 in a form-fitting manner when the area 78 of the gear 77 runs past the gear 75.
  • the shape of the control curve 81 is further selected so that the support disk 79 is first decelerated in this area and then accelerated again until the support disk 79 and thus the gear 77 again have the same peripheral speed as the gear 75.
  • the deceleration takes place up to a value at which the pressure cylinder 60 placed on the shaft 62 has a peripheral speed which is slightly below the feed speed of the sheet from the feed table 5.
  • the grippers of the gripper system 61 close at the moment the sheet starts running at the front mark 59.
  • the control curve 81 begins to accelerate the shaft 62 of the printing cylinder 60.
  • the toothing of the gear 77 engages with the gear 75.
  • the pressure cylinder 60 is driven via the gear 75.
  • the roller 80 is not in engagement with the control cam 81 so that it does not impair the drive from the gear wheel 75.
  • the sheet guided on the impression cylinder 60 is printed. This sheet is then removed in a known manner, not shown, via the transport drum 73.
  • the beginning of the tooth-free area 78 of the gear 77 faces the gear 75 again, so that the gear 75 no longer drives the shaft 62 and thus the pressure cylinder 60.
  • the driving roller 80 again reaches the area of the control cam 81, in which it is free of play is guided so that the pressure cylinder is driven via the control cam 81.
  • the effective area now delays the printing cylinder 60 to a peripheral speed in which the next sheet can be taken over.
  • the plate cylinder 65 and the blanket cylinder 63 are also driven at machine speed during the acceleration and deceleration of the impression cylinder via the gears 71, 74, 75 and 76.
  • the average peripheral speed of the printing cylinder 60 is lower than the peripheral speed of the blanket cylinder 63 or the plate cylinder 65, both of which are the same size, the diameter of the printing cylinder is correspondingly smaller.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
EP88110921A 1987-08-12 1988-07-08 Dispositif de transfert de feuilles Expired - Lifetime EP0303053B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3726780 1987-08-12
DE19873726780 DE3726780A1 (de) 1987-08-12 1987-08-12 Vorrichtung zur uebergabe von bogen

Publications (4)

Publication Number Publication Date
EP0303053A2 true EP0303053A2 (fr) 1989-02-15
EP0303053A3 EP0303053A3 (en) 1990-04-04
EP0303053B1 EP0303053B1 (fr) 1992-09-09
EP0303053B2 EP0303053B2 (fr) 2000-10-25

Family

ID=6333561

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110921A Expired - Lifetime EP0303053B2 (fr) 1987-08-12 1988-07-08 Dispositif de transfert de feuilles

Country Status (5)

Country Link
US (1) US4825762A (fr)
EP (1) EP0303053B2 (fr)
JP (1) JP2752381B2 (fr)
CA (1) CA1287255C (fr)
DE (2) DE3726780A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4431684A1 (de) * 1994-09-06 1996-03-14 Kba Planeta Ag Vorrichtung zum Antreiben einer Bogenbeschleunigungseinrichtung
DE4431683A1 (de) * 1994-09-06 1996-03-14 Kba Planeta Ag Antrieb einer Bogenbeschleunigungseinrichtung
DE4431682A1 (de) * 1994-09-06 1996-03-14 Kba Planeta Ag Kurvengesteuertes Bogenbeschleunigungssystem
DE4431680A1 (de) * 1994-09-06 1996-03-14 Kba Planeta Ag Kurvengesteuerter Antrieb eines Bogenbeschleunigungssystems
DE102004057842A1 (de) * 2004-12-01 2006-06-08 Koenig & Bauer Ag Einrichtung zum Beeinflussen von Bogen

Families Citing this family (12)

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Publication number Priority date Publication date Assignee Title
GB8619504D0 (en) * 1986-08-11 1986-09-24 Rockwell Graphic Systems Ltd Accelerating drive member
DE4020730C2 (de) * 1990-06-29 1999-04-15 Krause Biagosch Gmbh Verfahren und Vorrichtung zum Verbessern der Stapelqualität eines Bogenstapels
DE4435264C2 (de) * 1994-10-01 2001-05-10 Heidelberger Druckmasch Ag Bogenniederhalter
US5584246A (en) * 1995-06-09 1996-12-17 Werner Kammann Maschinenfabrik Gmbh Process and apparatus for printing on flat individual articles
DE19901699B4 (de) * 1998-02-04 2007-11-15 Heidelberger Druckmaschinen Ag Verfahren und eine Vorrichtung zur Durchführung des Verfahrens zur Beseitigung von rhythmischen Passerfehlern in Rotationsdruckmaschinen
DE10020648A1 (de) * 2000-04-27 2001-10-31 Heidelberger Druckmasch Ag Bogendruckmaschine
JP2002087635A (ja) * 2000-09-12 2002-03-27 Canon Inc シート材搬送装置およびそれを備える記録装置、記録機構付き撮像装置
DE102004019220A1 (de) * 2004-04-21 2005-11-10 Koenig & Bauer Ag Vorrichtung zum Zuführen von Bogen
JP2006124175A (ja) * 2004-10-14 2006-05-18 Graphic Management Associates Inc 加速装置及び減速装置を備えた製品フィーダ
JP5838128B2 (ja) * 2012-05-31 2015-12-24 株式会社木田鉄工所 搬送装置
CN103144424B (zh) * 2013-03-07 2016-01-20 天津长荣印刷设备股份有限公司 一种电子套准系统及其工作方法
WO2017099762A1 (fr) * 2015-12-09 2017-06-15 Hewlett-Packard Development Company, L.P. Repérage de supports d'impression au moyen d'une pince d'extraction

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DE8514775U1 (de) * 1985-05-20 1985-06-27 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Antrieb für einen Bogentransportmechanismus am Anleger einer Rotationsdruckmaschine

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None

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4431684A1 (de) * 1994-09-06 1996-03-14 Kba Planeta Ag Vorrichtung zum Antreiben einer Bogenbeschleunigungseinrichtung
DE4431683A1 (de) * 1994-09-06 1996-03-14 Kba Planeta Ag Antrieb einer Bogenbeschleunigungseinrichtung
DE4431682A1 (de) * 1994-09-06 1996-03-14 Kba Planeta Ag Kurvengesteuertes Bogenbeschleunigungssystem
DE4431680A1 (de) * 1994-09-06 1996-03-14 Kba Planeta Ag Kurvengesteuerter Antrieb eines Bogenbeschleunigungssystems
DE4431682C2 (de) * 1994-09-06 1998-11-26 Kba Planeta Ag Kurvengesteuertes Bogenbeschleunigungssystem
DE4431683C2 (de) * 1994-09-06 1998-11-26 Kba Planeta Ag Antrieb einer Bogenbeschleunigungseinrichtung
DE4431680C2 (de) * 1994-09-06 1998-11-26 Kba Planeta Ag Antrieb eines Bogenbeschleunigungssystems
DE4431684C2 (de) * 1994-09-06 1998-12-03 Kba Planeta Ag Vorrichtung zum Antreiben einer Bogenbeschleunigungseinrichtung
DE102004057842A1 (de) * 2004-12-01 2006-06-08 Koenig & Bauer Ag Einrichtung zum Beeinflussen von Bogen

Also Published As

Publication number Publication date
EP0303053A3 (en) 1990-04-04
EP0303053B1 (fr) 1992-09-09
JP2752381B2 (ja) 1998-05-18
EP0303053B2 (fr) 2000-10-25
DE3874459D1 (de) 1992-10-15
CA1287255C (fr) 1991-08-06
JPS6469344A (en) 1989-03-15
DE3726780A1 (de) 1989-02-23
US4825762A (en) 1989-05-02

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