EP1155830A2 - Dispositif pour solliciter un rouleau d'une machine d'impression avec une force de pression et machine d'impression avec un tel dispositif - Google Patents

Dispositif pour solliciter un rouleau d'une machine d'impression avec une force de pression et machine d'impression avec un tel dispositif Download PDF

Info

Publication number: EP1155830A2
Authority: EP; European Patent Office
Prior art keywords: force; contact pressure; generating element; printing; roller
Prior art date: 2000-05-18
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

EP01111492A

Other languages

German (de)

English (en)

Other versions

EP1155830B1 (fr

EP1155830A3 (fr

Inventor

Lennardt Jader

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.)

Eastman Kodak Co

Original Assignee

NexPress Solutions LLC

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.)

2000-05-18

Filing date

2001-05-11

Publication date

2001-11-21

2000-12-01 Priority claimed from DE10059889A external-priority patent/DE10059889A1/de

2001-05-11 Application filed by NexPress Solutions LLC filed Critical NexPress Solutions LLC

2001-11-21 Publication of EP1155830A2 publication Critical patent/EP1155830A2/fr

2003-01-02 Publication of EP1155830A3 publication Critical patent/EP1155830A3/fr

2006-05-31 Application granted granted Critical

2006-05-31 Publication of EP1155830B1 publication Critical patent/EP1155830B1/fr

2021-05-11 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
- B41F13/00—Common details of rotary presses or machines
- B41F13/08—Cylinders
- B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
- B41F13/26—Arrangement of cylinder bearings
- B41F13/32—Bearings mounted on swinging supports

Definitions

the invention relates to a device for loading a roller of a printing technology Machine with a contact pressure and a printing machine with such Contraption.
rollers In the case of printing machines, rollers often have to be applied with a contact pressure be, and in many cases it is crucial for the print quality that the Contact force is constant across the width of such a roller.
rollers which are used by a substrate conveyed printing substrates against the cylinders of several printing modules Press to make the part-color images generated by the print modules as even as possible and to be transferred to the printing substrates in exact register.
pressure rollers either individually Pressing springs against the cylinders or the pressure rollers all on one support element to arrange and to apply this to springs so that the pressure rollers pressed together against the cylinders.
the Contact force generated by a corresponding force from the springs is transferred to displaceably arranged bearings of the pressure rollers.
a constant Contact pressure across the width of the rollers is not, however, satisfactory Way achievable, especially not if this is due to a required high Print quality in a very precise way is required.
the invention is therefore based on the object of a device at the outset mentioned type in such a way that a constant contact pressure with little effort can be achieved across the width of the rollers.
the object is achieved in that the roller at one end two two-armed lever is rotatably mounted that the two-armed lever on side parts are rotatably mounted and that at the other ends of the two-armed lever one Cross connection is arranged to the at least one force-generating element attacks.
the lever transmission of the forces according to the invention distributes them evenly on the respective roller. This also includes inaccuracies in dimensions by rollers or the elements interacting with them, as well Shocks that occur, for example, from the front or rear edges of printing substrates.
the force-generating element can be designed in various ways.
On Proposal provides that the force-generating element to apply a permanent Force is formed, which is dimensioned such that the two-armed lever the contact pressure arises.
it can create a permanent force that the force-generating element is a weight.
a force generated in this way is always constant, shows hardly any position-dependent differences and no hysteresis, as is the case with springs.
the force-generating element for the counteracting force is expedient a pneumatic cylinder.
this is like starting and stopping a roller well controllable and can be designed such that it simultaneously as Damping element works. This way the occurrence of vibrations prevents, for example, those caused by printing substrate leading or trailing edges could be stimulated.
variable force is formed, which is adjustable such that a desired contact pressure can be achieved.
variable force is too adjustable so that the contact pressure can be switched off, that is, the roller with it interacting element can be moved away. This also serves to prevent this the deformation of surfaces mentioned above.
a force-generating element is arranged centrally on the cross-connection, then easily achieved a very constant contact force along a roller.
variable force is also preferably generated by means of a pneumatic cylinder, with which various forces such as starting and stopping a roller can be easily achieved are.
the pneumatic cylinder has a good damping effect achieve.
cross connection is designed as a resilient element, one becomes special good absorption of shocks and pressure fluctuations as well as a very good compensation achieved by inaccuracies. It also serves this purpose if the cross connection is rotatably connected to the levers, the cross connection parallel to the roller should run.
damping elements can of course also be arranged.
One It also serves to prevent vibrations when the bearings of the levers in the Side parts are designed as plain bearings.
the side panels can have housing walls or be separate components that are connected to the housing walls.
a particularly useful application of the device provides for this Use pressure of the pressure rollers, whereby the contact pressure is generated, the required for optimal transfer of partial color images to a printing substrate is.
the aforementioned purpose is particularly important, because the uniform and precise force setting for the print quality is crucial Role play. Therefore, it is also proposed to use a printing press, in particular an electrophotographic printing machine with an aforementioned device equip, the rollers on a support for printing substrates opposite of cylinders are arranged, which for transferring the partial color images Print substrates are formed.
Fig. 1 shows a schematic diagram of the device according to the invention.
a roller 1 with a contact pressure 3 this is supported at one end by two two-armed levers 4, 5.
the two-armed levers 4, 5 are mounted on side parts 6 and 7 by means of bearings 14.
a cross connection 8 At the other ends of the two-armed levers 4, 5 there is a cross connection 8, which is acted upon by a force generating element 9, 9 ', 9 "with a force 10, 10', 10".
This can be a force-generating element 9 for generating a permanent force 10, a force-generating element 9 'for generating a force 10' opposite to the permanent force 10, or a force-generating element 9 "for generating a variable force 10".
the representation here is symbolic in nature and will be explained in more detail below.
the actuating movement of the roller 1 is shown by means of a double arrow 20 and the Adjustment movement of the opposite ends of the levers 4, 5 with the double arrow 21.
Forces 10, 10 ', 10 "and actuating movements 20 and 21 are used to engage the roller 1 interacting component, not shown here, with the symbolized by three arrows Apply pressure 3.
the three arrows 3 are intended to illustrate that the Contact pressure 3 is evenly distributed over the entire width of the roller. This is the Main purpose of the invention, which is achieved in that the power transmission by means of the two-armed levers 4, 5 in such a way that the roller 1 with uniform Forces is applied.
the diagram in FIG. 2 shows a printing press 2 with a carrier 17 for transporting printing substrates 16 through the printing press 2 in the direction of the arrow 31.
the printing substrates 16 change from one printing module 19, 19 ', 19 “, 19”' to the other conveyed and thereby printed by cylinders 18, 18 ', 18 ", 18"' of the printing modules 19, 19 ', 19 “, 19”' with partial color images 15, 15 ', 15 ", 15”', which together result in color printing.
An exact contact pressure 3 and a vibration-free guidance of the printing substrates 16 are required.
the invention proposes rollers 10, 10 ', 10 ", 10"' which are mounted on the principle described above.
the carrier 17 is placed over a variety of roles.
a roller 22 is used to drive of the carrier 17 in the direction of arrow 23. Another role is by the effect a tensioning roller 25.
a roller 26 pivotable transversely to its axis of rotation is for lateral adjustment of the tape run of the carrier 17 is provided.
a pulley 27 interacts with a roller 28.
the roller 28 is used to hang up Print substrates 16 which are to be printed.
Guide rollers 29 cause certain wrapping of cylinders 18, 18 ', 18 ", 18"' corresponding to the partial color images 15, 15 ', 15 ", 15”' a print image in the form of toner particles for transfer wear on the printing substrates 16.
the cylinders 15, 15 ', 15 ", 15”' Provide the toner particles directly or via further cylinders (not shown) become.
the arrows 32 show the direction of rotation of the cylinders 15, 15 ', 15 ", 15”'.
rollers 10, 10 ', 10 ", 10"' designed as pressure rollers are provided, which can be switched on and off on the underside of the carrier 17.
Another role 30 is used to remove a printing substrate 16 from the carrier 17.
Fig. 3 shows an embodiment of the device according to the invention with force-generating elements 9 and 9 ', which are designed as a weight 11 and as a pneumatic cylinder 12.
the weight 11 pulls down and thereby generates the contact pressure 3 of the roller 10.
the element 9 ' serves to generate the counterforce 10' to regulate this contact pressure 3 or to switch off the contact pressure.
This element 9 ' is designed as a pneumatic cylinder 12.
the actuating movement of the pneumatic cylinder 12 is shown by means of the double arrow 34. If the pneumatic cylinder 12 is not active, the contact pressure 3 is generated by the weight 11.
the two two-armed levers 4, 5 are attached to side parts 6, 7, which are connected to one another by cross struts 33. In this way, the device is designed such that it can be used as a whole in a machine, for example by fastening the side parts 6, 7 in the machine.
the other functions and the other components reference is made to the basic diagrams above.
FIG. 4 shows a further exemplary embodiment of the invention, in which an element 9 "for generating a variable force 10" is arranged.
This element is a pneumatic cylinder 13, which is arranged in the middle of the cross connection 8.
the cross connection 8 is rotatably suspended on the two-armed levers 4, 5 and has spring properties. These measures result in a very good distribution of force and absorption of shocks and other stresses.
the levers 4, 5 are supported by means of bearings 14 in side parts 6, 7, which are connected to one another by means of cross struts 33.
the actuating movement of the pneumatic cylinder 13 is indicated by the double arrow 34.
the pneumatic cylinder 13 applies the entire force required to set the contact pressure 3.
the pneumatic cylinder 13 is designed such that it can turn the roller 10 on and off.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Delivering By Means Of Belts And Rollers (AREA)
Unwinding Webs (AREA)
Rolls And Other Rotary Bodies (AREA)
Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Color Electrophotography (AREA)
Inking, Control Or Cleaning Of Printing Machines (AREA)
Rotary Presses (AREA)

EP01111492A 2000-05-18 2001-05-11 Machine d'impression avec dispositifs pour solliciter un rouleau d'impression avec une force de pression Expired - Lifetime EP1155830B1 (fr)

Applications Claiming Priority (4)

Application Number	Priority Date	Filing Date	Title
DE10024092		2000-05-18
DE10024092		2000-05-18
DE10059889		2000-12-01
DE10059889A DE10059889A1 (de)	2000-05-18	2000-12-01	Vorrichtung zur Beaufschlagung einer Walze einer drucktechnischen Maschine mit einer Anpresskraft und Druckmaschine mit einer derartigen Vorrichtung

Publications (3)

Publication Number	Publication Date
EP1155830A2 true EP1155830A2 (fr)	2001-11-21
EP1155830A3 EP1155830A3 (fr)	2003-01-02
EP1155830B1 EP1155830B1 (fr)	2006-05-31

Family

ID=26005707

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP01111492A Expired - Lifetime EP1155830B1 (fr)	2000-05-18	2001-05-11	Machine d'impression avec dispositifs pour solliciter un rouleau d'impression avec une force de pression

Country Status (5)

Country	Link
US (1)	US20020020314A1 (fr)
EP (1)	EP1155830B1 (fr)
JP (1)	JP2002023522A (fr)
AT (1)	ATE327889T1 (fr)
DE (1)	DE50109925D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE102016215986A1 (de) *	2016-08-25	2018-03-01	Gallus Druckmaschinen Gmbh	Bearbeitungswerk und Etikettendruckmaschine mit einem solchen Bearbeitungswerk
DE102016215988A1 (de) *	2016-08-25	2018-03-01	Gallus Druckmaschinen Gmbh	Bearbeitungswerk und Etikettendruckmaschine mit einem solchen Bearbeitungswerk

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2213130A (en) *	1938-05-21	1940-08-27	American Stay Company	Printing press
GB634213A (en) *	1947-04-24	1950-03-15	Astra Ivanowna Sark	Improvements relating to multi-colour printing machines
FR1494327A (fr) *	1966-07-29	1967-09-08	Heurtey Sa	Perfectionnements apporté aux dispositifs tendeurs de bande ou produit analogue, dans les installations de traitement continu
DE1774631A1 (de) *	1968-07-30	1971-10-21	Kleinewefers Soehne J	Taenzerwalze
DE3232484A1 (de) *	1981-09-03	1983-03-10	Basf Ag, 6700 Ludwigshafen	Wickelvorrichtung fuer bandstreifen

2001
- 2001-05-07 US US09/850,046 patent/US20020020314A1/en not_active Abandoned
- 2001-05-11 DE DE50109925T patent/DE50109925D1/de not_active Expired - Lifetime
- 2001-05-11 EP EP01111492A patent/EP1155830B1/fr not_active Expired - Lifetime
- 2001-05-11 AT AT01111492T patent/ATE327889T1/de not_active IP Right Cessation
- 2001-05-14 JP JP2001143612A patent/JP2002023522A/ja active Pending

Also Published As

Publication number	Publication date
EP1155830B1 (fr)	2006-05-31
EP1155830A3 (fr)	2003-01-02
JP2002023522A (ja)	2002-01-23
DE50109925D1 (de)	2006-07-06
ATE327889T1 (de)	2006-06-15
US20020020314A1 (en)	2002-02-21

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2003-09-24	AKX	Designation fees paid	Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
2004-11-03	RAP1	Party data changed (applicant data changed or rights of an application transferred)	Owner name: EASTMAN KODAK COMPANY
2005-07-20	17Q	First examination report despatched	Effective date: 20050603
2005-12-21	RTI1	Title (correction)	Free format text: PRINTING MACHINE WITH MEANS FOR APPLYING A PRESSURE FORCE ON A PRINTING PRESS CYLINDER
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