EP0947320A1 - Procédé et dispositif pour le retournement d'une feuille dans une machine d'impression - Google Patents

Procédé et dispositif pour le retournement d'une feuille dans une machine d'impression Download PDF

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Publication number
EP0947320A1
EP0947320A1 EP99105360A EP99105360A EP0947320A1 EP 0947320 A1 EP0947320 A1 EP 0947320A1 EP 99105360 A EP99105360 A EP 99105360A EP 99105360 A EP99105360 A EP 99105360A EP 0947320 A1 EP0947320 A1 EP 0947320A1
Authority
EP
European Patent Office
Prior art keywords
sheet
cylinder
sheet guide
guide cylinder
swing arm
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
EP99105360A
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German (de)
English (en)
Other versions
EP0947320B1 (fr
Inventor
Klemens Kammerer
Harald Bayer
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
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Filing date
Publication date
Application filed by MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP0947320A1 publication Critical patent/EP0947320A1/fr
Application granted granted Critical
Publication of EP0947320B1 publication Critical patent/EP0947320B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41F21/10—Combinations of transfer drums and grippers
    • B41F21/106—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine
    • B41F21/108—Combinations of transfer drums and grippers for reversing sheets, e.g. for perfecting machine with pneumatic means

Definitions

  • the invention relates to a method and device for turning a sheet in a printing press according to the generic terms of main and secondary claims.
  • a method and a device of this type is known from DE 27 56 507 A1 for a Rotary printing machine in series construction for the Schön- and Schön- and Reverse pressure known.
  • a sheet on an intermediate drum is from a vibrating system, here called swivel gripper, is grasped on its rear edge and with this edge as a turned leading edge to a second intermediate drum transported further.
  • the intermediate drums are full sheet guide cylinders Cylinder surface.
  • the swivel gripper has mechanical grippers for removal and transporting the sheet.
  • This solution is for a printing press suitable, the printing units each connected to several intermediate drums are.
  • the swivel gripper is in particular between two intermediate drums arranged.
  • the circumference of the intermediate drum should be avoided Can be reduced in size temporarily during the swinging movement.
  • this drum Preferably points this drum on different shell segments, of which at least one provided with grippers is movable.
  • the axis shaft of the swivel gripper is eccentric movable and synchronized with the rotational movement of the intermediate drum.
  • the disadvantage here is that due to the large number of between the printing units arranged drums and the movable shell segments on a drum this printing press is very complex. Furthermore is between the drums and the swivel gripper requires a sheet guide because the sheet is on a strongly curved trajectory. Especially when rewinding of the swivel gripper there is a risk of greasing if the Swivel gripper comes into contact with the rear area of the arch.
  • a turning device of this type is also from DE 26 33 183 C2 for a sheet-fed rotary printing press known.
  • This printing machine has i.a. one with a turning drum cooperating transfer drum, wherein between Transfer drum and turning drum a removal device is arranged.
  • the removal device comprises a gripper device, which the sheet turned on the turning drum with its original Traces the rear edge as the front edge to the same transfer drum from which the sheet was fed to the turning drum.
  • the disadvantage here is that in addition to the required sheet guiding cylinders, like printing cylinder and transfer drum, additionally a reversing drum with assigned Acceptance device is required.
  • DE 36 02 084 C2 is a sheet transfer drum between printing units known from rotary printing presses between at least two gripper bridges formed essentially as a secant within the drum circumference Has guiding surfaces (flattening).
  • the guide surfaces are intended as guide vanes serve, which generate an air jam in printing operation, the respective sheet with the printed surface away from the guiding surfaces in order to create a lubricating and to create doubling-free sheet guidance.
  • From DE-AS 12 62 294 is a sheet turning device with a between the Printing cylinders of two printing units of a multi-color sheet-fed rotary printing press arranged transfer cylinder known.
  • the bow on the rear edge of suction pads as the first gripper system of the transfer cylinder sucked in.
  • the first gripper system swings on the transfer cylinder in a free space and passes the bow to one also on the Transfer cylinder arranged second gripper system.
  • the second gripper system leads the arch so turned in the gripper closure until delivery a downstream printing cylinder.
  • the disadvantage here is that for the transfer cylinder a considerable amount of parts and a complex control the gripper systems is required.
  • the invention has for its object a method and an apparatus of the type described at the outset, which avoid the disadvantages mentioned, which, in particular, permits a turn with little effort and allows smear-free sheet transport.
  • the solution according to the invention is advantageous for rotary printing presses in Suitable in series, which one or three between the printing units Have transfer cylinders (transfer drums) as sheet guide cylinders, wherein at least one transfer cylinder within the cylinder circumference essentially is limited by secants.
  • transfer cylinders transfer drums
  • a space preferably created as a segment of a circle, in which a bow-leading vibration system is movable.
  • a slender sheet run can thus be achieved since the sheet has no essential Curvature from the upstream sheet guide cylinder to the following one Bow guide cylinder can be passed. It is in preferred training the swing system as a bow guide, especially with blown air support, usable.
  • the one according to the invention is preferred Solution can be used in rotary printing machines, which between two printing units, the term also a coating unit or a processing station includes, only have one transfer cylinder each. At least the transfer cylinder assigned to the vibration system is within the cylinder circumference between gripper systems limited by secants.
  • a transfer cylinder limited by secants can be used as a sheet guiding cylinder for straight printing (one-sided printing) and for face and reverse printing (two-sided printing).
  • the sheet-guiding cylinders (as a printing cylinder in the printing unit and as a transfer cylinder in the transfer area) can each be carried out uniformly between the printing units, so that the use of one or more reversing drums is no longer necessary.
  • the vibration system can be driven separately or can be switched into the existing drive wheel train by means of a coupling.
  • FIG. 1 shows a variant of a sheet-fed rotary printing press in a row construction.
  • Each printing unit shown is formed from a first sheet guide cylinder 1, here a printing cylinder, symmetrically distributed around the circumference of gripper systems 4 and a blanket cylinder 22.
  • the plate cylinder as well as the inking unit and, if applicable, the dampening unit will not be discussed further here.
  • a forme cylinder instead of the blanket cylinder 22, a forme cylinder can be used, for example as a carrier for a flexible high-pressure mold in a coating unit.
  • a sheet guide cylinder 2 is arranged as a transfer cylinder for sheet transport, which has gripper systems 4 arranged symmetrically on the circumference and, within a flight circle 3 of the gripper systems 4, has flattenings 21 which essentially each correspond to a secant 15.
  • the flats 21 can also be slightly curved (concave or convex). There is therefore a free space, preferably a circular segment 16, between the flats 21 and the flight circle 3.
  • the sheet guiding cylinders 1, 2 are double in size, based on the rubber blanket cylinder 22 with a single large diameter.
  • each sheet guide cylinder 1, 2 thus has two gripper systems 4 arranged symmetrically around the circumference.
  • a vibrating system 7 is arranged below these sheet guide cylinders 1, 2.
  • the vibration system 7 is rotatably received in a bearing 19 and is functionally connected to a drive 8.
  • the bearing 19 is, for example, an eccentric, a cam mechanism or a electronic cam "(programmable servo drive). In connection with the drive 8, the movement of the vibration system 7 is generated mechanically (eccentric, cam mechanism) or electrically (electronic cam) via the bearing 19.
  • the curve law is designed such that the vibration system 7 in the free space of the second sheet guide cylinder 2.
  • the bearing 19 is preferably arranged within the oscillation system 7 or axially parallel to the drive 8.
  • the drive 8 can be controlled separately or can be coupled to the drive wheel train via a clutch the storage 19 the format adjustment of the vibration system 7 mechanically or electrically continuously.
  • the oscillation system 7 is movable on a guide track 9, which is formed by a forward track 18 and a return track 17.
  • the vibration system 7 has a swing arm 11 which is connected to the bearing 19.
  • a suction bar 10 is arranged at the end, which is functionally connected on the line side to a pneumatic system that generates, preferably switchable, pneumatic air.
  • the swing arm 11 has a plurality of openings 12 to support the sheet guide, which openings are connected on the line side to a pneumatic system which generates, preferably switchable, pneumatic air.
  • the blown air supply and the openings 12 are preferably integrated in the swing arm 11 or arranged on this swing arm 11.
  • Squeegee 10 and openings 12 are assigned to the sheet guide cylinder 1 adjacent to the swing arm 11, the squeegee 10 preferably being format-adjustable, depending on the format length of the substrates to be processed.
  • the pneumatically actuated openings 12 can be used to support the sheet guide.
  • the end of the swing arm 11 in the area of the Squeegee 10 arranged a gripper system 4 with grippers 13, the Squeegee 10 serves as an impact bar.
  • the suction bar 10 is used for suction a bow 20 and the gripper system 4 with grippers 13 serves the additional Positional fixation of the bow 20 during the swinging movement.
  • This additional Training is preferred for sheet-like substrates with higher basis weights, in particular cardboard, cardboard or sheet metal can be used.
  • For the period of the suction of the respective sheet 20 in the takeover area 5 is Squeegee 10 free, i.e. the grippers 13 are pivoted away.
  • the movement of the Gripper 13 is preferably carried out via one or more control cams with one corresponding motion law.
  • the second sheet guide cylinder is preferred in the conveying direction 14 after the transfer region 6 2 assigned a sheet guiding device (not shown).
  • This sheet guiding device is outside the flight circle 3 at a short distance arranged to the sheet guide cylinder 2 and extends approximately to the takeover area of the downstream (third) sheet guiding cylinder 1.
  • the sheet guide device preferably as a continuous guide surface Openings designed as air nozzles in a flow channel, these openings with blowing air and / or suction air.
  • the swing system 7, especially the swing arm 11 can be fixed in the transfer area 6 and forms a sheet guide system with the downstream sheet guiding device, which serves to guide the sheet on the second sheet guide cylinder 2.
  • the suction bar 10 and the blowing openings 12 on the swing arm 11 are with blowing air or suction air Can be supplied via a common or separate, switchable pneumatic system.
  • the openings 12 of the swing arm 11 can be acted upon with blown air at least in the conveying direction 14, preferably on the route of the guide curve 9 from the take-over area 5 to the transfer area 6, in order to support the sheet guidance.
  • the sheet guiding cylinder 1, 2 are as a printing cylinder and transfer cylinder or storage drum and transfer drum Executable within the printing press.
  • the mode of operation is as follows: an arc 20 is formed on the closed surface of the first sheet guide cylinder 1 in the gripper closure in the conveying direction 14 guided.
  • the front edge of the sheet 20 is in the gripper system 4 by means of Grippers 13 fixed in position.
  • the sheet 20 is at the tangent point 23 with the leading edge from Gripper system 4 of the first sheet guide cylinder 1 in the conveying direction 14 to the Pass gripper systems 4 of the second sheet guide cylinder 2.
  • the corresponding Gripper system 4 of the second sheet guide cylinder 2 now leads the Sheet 20 and passes this in the conveying direction 14 to the (third) sheet guide cylinder 1 of the following printing unit.
  • the vibration system 7 is in Transfer area 6 fixed in position (at a short distance from the second sheet guide cylinder 2) and is used for the preferably pneumatically supported sheet guide of the second sheet guide cylinder 2 transported in the conveying direction 14 Sheet 20
  • the gripper system 4 in the second sheet guide cylinder 2 detects the sheet 20 by means of grippers 13 and transfers them to the gripper system in conveying direction 14 4 of the (third) sheet guiding cylinder 1 in the subsequent printing unit.
  • the vibrating system 7 then moves away from the second sheet guiding cylinder 2, is accelerated (towards the upstream sheet guiding cylinder 1) and the next sheet brought up on the first sheet guide cylinder 1 is sucked in.
  • the activated vibration system 7 can be driven separately from the drive 8 or via the drive wheel train of the machine drive.
  • the guideway 9 for the oscillation system 7 is designed such that this oscillation system 7 intersects the flight circle 3 of the second sheet guiding cylinder 2.
  • the oscillation system 7 is preferably movable on a forward path 18 intersecting the flight circle 3 of the second sheet guide cylinder 2 and a return path 17 running outside the flight circle 3 (FIG. 2).
  • This design of the leading path 18 has the advantage that the sheet 20 is essentially tangentially stretched (without compressing) from the upstream sheet guiding cylinder 1 and the swing arm 11 can be moved back without lubrication underneath the rear area of the sheet 20 on the return path 17 to the takeover area 5 .
  • the swing arm 11 (with bow 20) dips in the conveying direction 14 before Gripper system 4 of the second sheet guiding cylinder 2 - the flight circle 3 cutting - into the free space preferably formed as a circular segment 16, emerges from the free space cutting flight circle 3 and goes in the transfer area 6 in the waiting position until the trailing gripper system 4 of the (second) Sheet guiding cylinder 2 is in the transfer area 6.
  • Sheet 20 is handed over and the swing arm 11 moves at a distance to the flight circle 3 from the second Bow guide cylinder 2, pauses briefly and then swings below of the rear sheet area on the return path 17 to the takeover area 5 back.
  • the swing arm 11 preferably cuts the advance path 18 and goes into waiting position in takeover area 5.
  • the first sheet guide cylinder 1 promotes the following bow 20 via the tangent point 23 on the swing arm 11 over, the swing arm 11 in the conveying direction 14 to the sheet guide cylinder 1 moves in unison until the rear edge or the rear area of the Bow 20 sucked by the suction bar 10 on the swing arm 11 and on the leader 18 is brought.
  • the oscillation system 7 is on the flight circle 3 of the second sheet guide cylinder 2 intersecting return path 17 and the outside of the flight circle 3 running leading path 18 movable.
  • the oscillation system 7 is also on the flight circle 3 of the second arc guide cylinder 2 intersecting leading path 18 and the intersecting the flight circle 3 Return path 17 movable.
  • the formation of the sheet guide cylinder 1, 2 is not based on the embodiment described confined with double large cylinders. Rather, they are also suitable Sheet guiding cylinders with multiple large diameters, e.g. triple or four times the diameter. There is also a combination of multiple same size sheet guide cylinders 1 and 2 included. Likewise are Combinations of a double-sized sheet guide cylinder 1 or 2 and a triple-sized sheet guide cylinder 1 or 2 and a triple large sheet guide cylinder 1 or 2 and a fourfold sheet guide cylinder 1 or 2 possible.

Landscapes

  • Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Printing Methods (AREA)
EP99105360A 1998-03-31 1999-03-16 Procédé et dispositif pour le retournement d'une feuille dans une machine d'impression Expired - Lifetime EP0947320B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19814320A DE19814320C1 (de) 1998-03-31 1998-03-31 Verfahren und Vorrichtung zum Wenden eines Bogens in einer Druckmaschine
DE19814320 1998-03-31

Publications (2)

Publication Number Publication Date
EP0947320A1 true EP0947320A1 (fr) 1999-10-06
EP0947320B1 EP0947320B1 (fr) 2002-06-12

Family

ID=7863059

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99105360A Expired - Lifetime EP0947320B1 (fr) 1998-03-31 1999-03-16 Procédé et dispositif pour le retournement d'une feuille dans une machine d'impression

Country Status (5)

Country Link
US (1) US6089155A (fr)
EP (1) EP0947320B1 (fr)
JP (1) JP3188428B2 (fr)
AT (1) ATE218976T1 (fr)
DE (2) DE19814320C1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4567257B2 (ja) 2000-11-30 2010-10-20 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト 枚葉紙を処理する機械内で枚葉紙を第１の胴から、直接隣接する第２の胴に、枚葉紙を案内しかつ引き渡す保持エレメントによって案内しかつ引き渡すための装置
DE10158467B4 (de) * 2000-12-21 2014-05-15 Heidelberger Druckmaschinen Ag Druckmaschine und Verfahren zum Bedrucken eines Bogens
US6739252B2 (en) 2001-07-30 2004-05-25 Heidelberger Druckmaschinen Ag Method and apparatus for reversing sheet material in sheet-processing machines
DE10358171A1 (de) * 2003-12-12 2005-07-07 Heidelberger Druckmaschinen Ag Vorrichtung zum Fördern eines Bogens durch eine drucktechnische Maschine
JP2013241265A (ja) * 2012-04-25 2013-12-05 Komori Corp シート反転装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2633183A1 (de) * 1975-07-24 1977-02-10 Cigardi Omc Sa Vorrichtung zum folgenumlegen der boegen auf offsetmehrfarbigen bogenverarbeitungsmaschinen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1262294B (de) * 1966-07-22 1968-03-07 Planeta Veb Druckmasch Werke Bogenwendeeinrichtung in einem zwischen den Druckzylindern zweier Druckwerke einer Mehrfarbenbogenrotationsdruckmaschine angeordneten UEberfuehrungszylinder
DE2460503C3 (de) * 1974-12-20 1979-05-03 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Umstell- und Einstellvorrichtung einer Übergabetrommel zur Bogenüberführung
SE7614362L (sv) * 1976-12-21 1978-06-22 Solna Offset Ab Arkvendare
DE3602084A1 (de) * 1986-01-24 1987-07-30 Heidelberger Druckmasch Ag Bogenueberfuehrtrommel zwischen den druckwerken von rotationsdruckmaschinen
EP0306684B1 (fr) * 1987-09-11 1992-04-08 M.A.N.-ROLAND Druckmaschinen Aktiengesellschaft Dispositif pour presser une feuille contre le cylindre de contre-pression dans une presse rotative à feuilles pour l'impression en plusieurs couleurs
US5762333A (en) * 1994-08-31 1998-06-09 Komori Corporation Sheet reversing apparatus for sheet-fed rotary press with reversing mechanism
DE4434778C1 (de) * 1994-09-29 1995-11-30 Roland Man Druckmasch Bogenführungsmodul für eine Wendeeinrichtung in einer für Schöndruck oder Schön- und Wiederdruck einsetzbaren Rotationsdruckmaschine
DE9416106U1 (de) * 1994-10-06 1994-11-24 Heidelberger Druckmasch Ag Bogenleitblech für eine Wendeeinrichtung
US5579691A (en) * 1994-12-20 1996-12-03 Heidelberger Druckmaschinen Ag Sheet transfer drum in a multi-color sheet-fed rotary printing press

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2633183A1 (de) * 1975-07-24 1977-02-10 Cigardi Omc Sa Vorrichtung zum folgenumlegen der boegen auf offsetmehrfarbigen bogenverarbeitungsmaschinen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
"Schön- und Widerdruck mit neuen technischen Konzept", DEUTSCHER DRUCKER, vol. 30, no. 43, 17 November 1994 (1994-11-17), Ostfildern, pages g17, XP000477818 *

Also Published As

Publication number Publication date
ATE218976T1 (de) 2002-06-15
JP3188428B2 (ja) 2001-07-16
DE59901696D1 (de) 2002-07-18
US6089155A (en) 2000-07-18
EP0947320B1 (fr) 2002-06-12
JPH11320833A (ja) 1999-11-24
DE19814320C1 (de) 1999-04-01

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