EP0195280A2 - Dispositif pour tendre et aligner un cliché flexible sur le cylindre porte-plaque d'une machine à imprimer rotative - Google Patents

Dispositif pour tendre et aligner un cliché flexible sur le cylindre porte-plaque d'une machine à imprimer rotative Download PDF

Info

Publication number: EP0195280A2
Authority: EP; European Patent Office
Prior art keywords: clamping; tensioning; screws; rail; pressure plate
Prior art date: 1985-03-22
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

EP86102500A

Other languages

German (de)

English (en)

Other versions

EP0195280B1 (fr

EP0195280A3 (en

Inventor

Willi Jeschke

Nikolaus Dr. Spiegel

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.)

1985-03-22

Filing date

1986-02-26

Publication date

1986-09-24

1986-02-26 Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG

1986-09-24 Publication of EP0195280A2 publication Critical patent/EP0195280A2/fr

1987-06-16 Publication of EP0195280A3 publication Critical patent/EP0195280A3/de

1990-04-25 Application granted granted Critical

1990-04-25 Publication of EP0195280B1 publication Critical patent/EP0195280B1/fr

2006-02-26 Anticipated expiration legal-status Critical

Status 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
- B41F27/00—Devices for attaching printing elements or formes to supports
- B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
- B41F27/1225—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly
- B41F27/1231—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end substantially rectilinearly by translatory motion substantially tangential to support surface

Definitions

the invention relates to a device for clamping and aligning flexible printing plates according to the preamble of claim 1.
Such devices are known (DE-GM 8435189) and are used to place the printing plate to be clamped onto the plate cylinder as precisely as possible in order to avoid a subsequent correction.
the tensioning rail can be aligned in a certain position at the start of the pressure using adjusting screws.
means can also be provided on the printing plate itself, which facilitate the precise alignment of the printing plate. If this does not succeed, the applied pressure plate must be corrected, which as a rule leads to plastic deformations due to the wrap friction. These deformations in turn result in registration errors that are difficult to correct.
a further disadvantage of the previous clamping devices has been that the starting position is lost when the adjusting screws are turned, that the positional accuracy is impaired by the thread play in the adjusting screws and that the tensioning rail tilts in its guides on the cylinder body when the pressure plate is inserted, even if between compression springs are provided in the two tensioning rails. All of this leads to inaccuracies in the alignment of the printing plate before it is placed on it, and inevitably to inaccurate clamping. Now runs the clamped in the front tensioning rail Pressing the pressure plate into the machine under pressure between the plate and blanket cylinders pulls the pressure plate on the front clamping rail and this tilts backwards in the direction of the tensile force of the pressure plate into the opposite contact position.
the object is achieved with the characterizing features of claim 1.
the preload achieved using an additional force makes it possible to switch off the play in the adjusting means, the additional force being chosen so high that the one-sided installation of the clamping means does not change even when a new pressure plate is inserted.
the leaf springs are designed and attached so that no bending moments but only tensile forces act on the tensioning rail.
the additional set screws according to claim 3 allow a precise setting of the desired starting position. This means that the pressure plate can be re-tensioned at any time without losing the target position determined by the set screws. This target position of the clamping rail can be simply by loosening the clamping screws * always find again.
the embodiment according to claim 2 has the advantage that the leaf springs arranged as close as possible to the pressure plate do not hinder the necessary tensioning of the same.
the clamped pressure plate can be inserted into the machine so precisely that the possibly necessary register corrections take place in the elastic range of the pressure plate due to the precise alignment and position determination of the front tensioning rail.
the printing unit shown in FIG. 1 contains in a known manner a plate cylinder 1, a blanket cylinder 2 and a printing cylinder 3, which are mounted on both sides in machine side frames 4.
the plate cylinder 1 is assigned a dampening unit 5 and an inking unit 6, which are also mounted on both sides in the machine side frames 4.
the plate cylinder 1 has a channel 7, which runs axially parallel, in which a front clamping rail 8 and a rear clamping rail 9 are arranged. For clamping and aligning a new pressure plate 10, this is inserted into the front clamping rail 8 approximately in the position shown, whereby it loads the front clamping rail 8 - at least with its own weight.
FIG. 2 shows how the front end 11 of the pressure plate 10 is clamped between the clamping rail 8 and the cover rail 12 with the aid of a clamping rod 13.
Such tensioning screws are also provided in the rear tensioning rail 9.
Both clamping rails 8 and 9 are guided in the circumferential direction of the plate cylinder 1 in guides 16 which are fixed to the bottom of the channel 6.
the front tensioning rail 8 is shown exaggeratedly tilted relative to the bottom of the channel 7 to show that when the pressure plate runs in between the plate cylinder 1 and the blanket cylinder 2 - which is done by rotating the two cylinders in the direction of the arrow - tensile forces act on the front end 11 of the pressure plate that lead to the shown tipping phenomenon in the context of the game.
the pressure plate 10 corresponding to FIG. 1 is only inserted, which in the previously known designs led to the tilting movement in the opposite direction, as is exaggerated here.
a leaf spring 17 is screwed on the front tensioning rail 8 in a manner that prevents it from rotating.
the leaf spring 17 is provided directly under the pressure plate 10 and is suspended under prestress in stops 19 screwed onto the channel wall. It exerts a tensile force on the front clamping rail 8, so that it always remains in the tilt position shown in FIG. 3 even when a new pressure plate is inserted, as a result of which the play between the clamping rail 8 and the guide 16 and in the other clamping devices is excluded.
two set screws 20 are provided, which are fixed via lock nuts 21. Via these adjusting screws 20, the tensioning rail 8 can be aligned in a specific starting position or setpoint position, so that this specific setpoint position can always be assumed after a clamping process.
the set screws 20 are arranged at the same height as the clamping screws 14 in order to ensure the same tipping point of the clamping rail 8.
the contact surfaces of the adjusting and clamping screws are spherical and are hereby supported on the stops 15 and 19. To compensate for any play can be provided between lock nut 21 and S p annschiene 8, a plate spring, not shown.
compression springs 22 can be provided between the two tensioning rails 8 and 9 in order to prevent undesired displacement of the tensioning rail 9 in the guides 16. These compression springs also support the insertion of the rear end of the pressure plate 10 between the tensioning rail 9 and the cover rail 12.
the pressure plate 10 can be with its front end 11 in the clamping rail 8, e.g. with the help of dowel bolts u. The like., Insert and align so precisely that a possibly necessary register fine correction takes place at the end of the pressure plate via the tensioning rail 9 in the elastic region of the pressure plate.
the required stable starting position of the front clamping rail 8 is generated by the leaf springs 17.
other types of springs can also be used instead of leaf springs.

Landscapes

Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)

EP86102500A 1985-03-22 1986-02-26 Dispositif pour tendre et aligner un cliché flexible sur le cylindre porte-plaque d'une machine à imprimer rotative Expired - Lifetime EP0195280B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3510440		1985-03-22
DE19853510440 DE3510440A1 (de)	1985-03-22	1985-03-22	Vorrichtung zum einspannen und ausrichten von biegsamen druckplatten auf dem plattenzylinder von rotationsdruckmaschinen

Publications (3)

Publication Number	Publication Date
EP0195280A2 true EP0195280A2 (fr)	1986-09-24
EP0195280A3 EP0195280A3 (en)	1987-06-16
EP0195280B1 EP0195280B1 (fr)	1990-04-25

Family

ID=6266055

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP86102500A Expired - Lifetime EP0195280B1 (fr)	1985-03-22	1986-02-26	Dispositif pour tendre et aligner un cliché flexible sur le cylindre porte-plaque d'une machine à imprimer rotative

Country Status (4)

Country	Link
US (1)	US4724762A (fr)
EP (1)	EP0195280B1 (fr)
JP (1)	JPS61220848A (fr)
DE (1)	DE3510440A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3519869A1 (de) *	1985-06-03	1986-12-04	Heidelberger Druckmaschinen Ag, 6900 Heidelberg	Spannschiene am plattenzylinder von rotationsdruckmaschinen
DE3806526A1 (de) *	1988-03-01	1989-09-14	Heidelberger Druckmasch Ag	Vorrichtung zum spannen von biegsamen druckplatten am plattenzylinder von rotationsdruckmaschinen
DE3933678A1 (de) *	1989-10-09	1991-04-18	Miller Johannisberg Druckmasch	Vorrichtung zum positionsgenauen spannen einer druckplatte auf einem druckzylinder
DE3936446A1 (de) *	1989-11-02	1991-05-08	Miller Johannisberg Druckmasch	Plattenzylinder einer druckmaschine
US5012738A (en) *	1989-11-13	1991-05-07	Hercules, Incorporated	Printing plate locking device
US5159877A (en) *	1991-12-10	1992-11-03	Ag-Bag Corporation	Rotor arrangement for a bagging machine
GR960100252A (el) *	1996-07-17	1998-03-31		Μπαρες τσιγκων εκτυπωτικων μηχανων οσφετ για την ταχεια και σωστη τοποθετηση του τσιγκου επι του κυλινδρου (καζανι).
CZ297967B6 (cs) *	2000-08-25	2007-05-09	Heidelberger Druckmaschienen Ag	Zarízení na prestavování minimálne jednoho prvku registru v tiskovém stroji a zpusob k provádení takového prestavování
US6886312B1 (en)	2003-11-07	2005-05-03	Miller-St. Nazianz, Inc.	Compacting rotor for bagging machines
US8281716B2 (en)	2008-12-24	2012-10-09	Printing Research, Inc.	Anti-marking jackets comprised of fluoropolymer and methods of using in offset printing
US8578853B2 (en) *	2008-12-24	2013-11-12	Printing Research, Inc.	Anti-marking jackets comprised of attachment structure and methods of using in offset printing
US8424453B2 (en) *	2010-09-01	2013-04-23	Printing Research, Inc.	Apparatus and method for adjusting anti-marking jackets
US8677899B2 (en)	2011-01-31	2014-03-25	Printing Research, Inc.	Reversible anti-marking jackets and methods of using
US9346258B2 (en)	2012-05-02	2016-05-24	Printing Research, Inc.	Method for cleaning anti-marking jackets

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE8435189U1 (de) *		1985-02-28	Grapho Metronic Meß- und Regeltechnik GmbH & Co KG, 8000 München	Vorrichtung zum Einspannen und Justieren von Druckplatten auf den Plattenzylindern einer Druckmaschine
US1765530A (en) *	1927-10-22	1930-06-24	Harris Seybold Potter Co	Plate clamp
GB448069A (en) *	1935-08-19	1936-06-02	Multigraph Co	Improvements in or relating to printing machines
DE946901C (de) *	1942-11-26	1956-08-09	Steinmesse & Stollberg K G	Schnellklemmvorrichtung fuer biegsame Druckplatten
US2641183A (en) *	1948-07-24	1953-06-09	Fairchild Camera Instr Co	Image-reproducing plate and cylinder assembly
US3168040A (en) *	1962-07-18	1965-02-02	Harris Intertype Corp	Plate clamp registering mechanism
US3557695A (en) *	1967-07-29	1971-01-26	Roland Offsetmaschf	Device for the fastening of a printing plate
DE2060001C3 (de) *	1970-12-05	1975-08-28	Koenig & Bauer Ag, 8700 Wuerzburg	Klemm- und Spannvorrichtung fur biegsame Druckplatten
US3884147A (en) *	1972-05-26	1975-05-20	Roland Offsetmaschf	Device for fastening flexible printing plates
US3858512A (en) *	1973-03-22	1975-01-07	Roland Offsetmaschf	Lock-up mechanism for flexible printing plates providing improved reference adjustment
DE2754080C3 (de) *	1977-12-05	1982-01-07	Registersystem für die Drucktechnik GmbH, 8000 München	Vorrichtung zum registerhaltigen Spannen von Druckplatten auf dem Plattenzylinder von Druckmaschinen
US4347788A (en) *	1980-05-01	1982-09-07	Harris Corporation	Plate lockup mechanism
JPS57205152A (en) *	1981-06-13	1982-12-16	Komori Printing Mach Co Ltd	Color register adjusting device for sheet printer
CH653616A5 (fr) *	1983-07-26	1986-01-15	De La Rue Giori Sa	Procede de fixation et d'ajustage d'une plaque d'impression sur un cylindre porte-plaques et dispositif de mise en oeuvre.
DE8412886U1 (de) *	1984-04-26	1984-07-19	Zimmerer, Alois, 8000 München	Offset-druckzylinder mit druckplatte
DE3505678A1 (de) *	1985-02-19	1986-08-21	Rolf Dr.-Ing. 8011 Neukeferloh Bosse	Einrichtesystem fuer offsetdruckmaschinen

1985
- 1985-03-22 DE DE19853510440 patent/DE3510440A1/de active Granted
1986
- 1986-02-26 EP EP86102500A patent/EP0195280B1/fr not_active Expired - Lifetime
- 1986-03-20 JP JP61061018A patent/JPS61220848A/ja active Pending
1987
- 1987-03-27 US US07/032,986 patent/US4724762A/en not_active Expired - Fee Related

Also Published As

Publication number	Publication date
EP0195280B1 (fr)	1990-04-25
DE3510440A1 (de)	1986-09-25
DE3510440C2 (fr)	1992-04-16
US4724762A (en)	1988-02-16
EP0195280A3 (en)	1987-06-16
JPS61220848A (ja)	1986-10-01

Legal Events

Date	Code	Title	Description
1986-08-09	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1986-09-24	17P	Request for examination filed	Effective date: 19860226
1986-09-24	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): CH FR GB IT LI NL SE
1987-04-29	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1987-06-16	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): CH FR GB IT LI NL SE
1989-03-22	17Q	First examination report despatched	Effective date: 19890202
1990-03-10	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1990-04-25	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): CH FR GB IT LI NL SE
1990-07-13	ITF	It: translation for a ep patent filed
1990-07-20	ET	Fr: translation filed
1990-08-01	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
1991-02-16	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1991-02-16	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1991-02-28	ITTA	It: last paid annual fee
1991-04-10	26N	No opposition filed
1992-02-12	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 19920212 Year of fee payment: 7
1992-02-29	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 19920229 Year of fee payment: 7
1993-02-27	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: SE Effective date: 19930227
1993-09-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: NL Effective date: 19930901
1993-10-18	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee
1995-01-31	EUG	Se: european patent has lapsed	Ref document number: 86102500.5 Effective date: 19930912
1997-01-21	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19970121 Year of fee payment: 12
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1998-10-14	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19980226
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Publication	Publication Date	Title
EP0238804B1 (fr)	1991-10-09	Dispositif de fixation des clichés souples sur les cylindres de clichés dans les rotatives
EP0195280B1 (fr)	1990-04-25	Dispositif pour tendre et aligner un cliché flexible sur le cylindre porte-plaque d'une machine à imprimer rotative
EP0425936A2 (fr)	1991-05-08	Dispositif pour le repérage, la fixation et la tension rapides de plaques d'impression
EP0201747B1 (fr)	1990-01-31	Dispositif pour tendre parallèlement les clichés sur le cylindre à cliché d'une machine à imprimer
EP0359959A2 (fr)	1990-03-28	Dispositif d'encrage à lame
EP0596337B1 (fr)	1996-04-24	Dispositif pour placer en répérage des plaques d'impression sur des cylindres de plaque des machines
EP1777072B1 (fr)	2011-10-05	Méthode de fabrication d'une plaque d'impression
DE3212414C2 (fr)	1988-09-08
DE3936459C1 (fr)	1991-04-18
EP1155838A2 (fr)	2001-11-21	Cylindre porte-plaque et positionneur extérieur de plaque
EP0429808B1 (fr)	1993-11-24	Dispositif pour tendre avec un repérage exact une plaque d'impression sur un cylindre d'impression
EP1592556A1 (fr)	2005-11-09	Groupe d'impression pour machine d'impression
DE2604874C3 (de)	1982-11-04	Einrichtung zum Einpassen von Druckplatten für Offset-Rollen-Rotationsdruckmaschinen
DE3806526C2 (fr)	1990-10-25
DE2720673B2 (de)	1979-09-06	Vorrichtung zum ungleichförmigen Spannen eines Gummituches in einer Offsetdruckmaschine
EP1182036A1 (fr)	2002-02-27	Dispositif pour réglage d'au moins un élément de repérage dans une machine d'impression et procédé correspondant
DE3246938A1 (de)	1984-06-20	Druckmaschine mir druckplattenzylinder, farbauftragwalze und gegendruckzylinder
DE10013804B4 (de)	2011-07-14	Verfahren und Vorrichtung zum Aufspannen eines Zylinderaufzuges auf einen Druckmaschinenzylinder
DE2926765A1 (de)	1981-01-22	Vorrichtung zur unterdrueckung von biegeschwingungen in rotations-offsetdruckmaschinen
DE3603218A1 (de)	1986-08-28	Einrichtung zum einstellen eines buchblocktransportsystems insbesondere fuer klebebindemaschinen
DE4410385C2 (de)	1997-07-17	Vorrichtung zum Befestigen von Druckplatten
DE4240462C2 (de)	1994-09-22	Vorrichtung zum registergenauen Aufspannen von Druckplatten auf dem Plattenzylinder von Druckmaschinen
CH697131A5 (de)	2008-05-15	Ausrichtvorrichtung für ein Druckwerk einer Druckmaschine.
DE8816324U1 (de)	1989-04-13	Vorrichtung zum Einspannen und Justieren von Druckplatten auf den Plattenzylindern einer Druckmaschine
WO2008006584A1 (fr)	2008-01-17	Dispositif de serrage doté de moyens de serrage à imbrication