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
• • 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
  • B41F27/1206—Feeding to or removing from the forme cylinder

Definitions

• the invention relates to devices for pressing an elevator onto a cylinder of a printing press with the aid of first and second rolling elements spaced apart from one another in the circumferential direction of the cylinder and to methods for clamping or unclamping such an elevator according to the preamble of claims 1, 5, 10, 22, 31 or 36th
• EP 0 712 725 A2 discloses a device for pressing an elevator onto a cylinder of a printing press with the aid of a plurality of rolling elements, in particular rollers, arranged along the cylinder.
• WO 01/87613 A1 describes a method and several embodiments of a device for pressing an elevator onto a cylinder of a printing press, wherein several rollers are pressed against the cylinder by means of an actuating means during the assembly or disassembly of an elevator.
• the actuating means can be a reversibly deformable hollow body, for. B. a hose.
• a substantially roller-shaped rigid roller carrier is pressed against the force of a spring against the cylinder.
• the roller carrier is designed as a rocker arm or as a one-armed lever.
• Another exemplary embodiment provides, in addition to the first rollers which are spaced apart from one another and which can be adjusted for the assembly of new elevators on the cylinder, a plurality of second rollers which can be employed for dismantling elevators.
• Two actuating means which can be actuated independently of one another can be provided for the employment of the first and second rollers.
• DE 196 39 800 C1 discloses a device for pressing an elevator onto a cylinder of a printing press with the aid of first and second rolling elements arranged one behind the other in the circumferential direction of the cylinder, the rolling elements only being able to be adjusted or removed from the cylinder together.
• a pressure roller on a z. B. is arranged as a leaf spring holder, the holder being connected to an insertion slide, the insertion slide being adjustable by a linear movement on a forme cylinder and thereby inserting one end of the pressure plate into an attachment slot introduced into the forme cylinder.
• US Pat. No. 4,727,807 A discloses a handling device for automatically assembling or dismantling printing plates on a cylinder, a gripper of the handling device having two rolling elements arranged one behind the other in the circumferential direction of the cylinder in a common frame.
• the invention has for its object to provide devices for pressing an elevator against a cylinder of a printing press with the aid of first and second rolling elements spaced apart in the circumferential direction of the cylinder and methods for clamping or unclamping such an elevator.
• the object is achieved by the features of claims 1, 5, 10, 22, 31 or 36.
• the device can be built very flat and thus space-saving, which is very advantageous in the given installation conditions on a printing press.
• a preferably layered arrangement of the supports means that the device can also be built very compactly in the circumferential direction of the cylinder, because despite the use of rolling elements arranged one behind the other in the circumferential direction of the cylinder, the installation space is not the sum of two lever arms strung together, but only slightly more than a single lever arm length is required.
• the device is insensitive to dirt and more robust than an arrangement with carriers which, for. B. are attached to a joint, because a joint at the intended installation location for trouble-free function against contamination such. B. splashes of paint and dust must be protected, which means an additional effort.
• the supports of the rolling elements are designed as an elastically bendable body, no separate spring element is required in cooperation with the actuating means acting on the supports in order to return the supports to their original position after actuation of the actuating means, because the supports inherently have a resilient spring Property.
• Another advantage is the good accessibility of the actuating means for pressing elevators against a cylinder, which is particularly important when a larger number of rolling elements with their supports are to be turned on and off independently of the cylinder.
• FIG. 1 shows a device for pressing an elevator onto a cylinder of a printing press with the aid of rolling elements
• An elevator 01 is attached to a cylinder 02 of a printing press, e.g. B. introduced a web offset printing press.
• the elevator 01 it can be, for. B. can be a flexible, in particular elastically bendable printing form 01, which is to be mounted on a forme cylinder 02.
• a hanging leg 03a which is angled at a leading end of the elevator 01, is preferably positively attached to a correspondingly designed first wall 04 of a preferably slot-shaped opening 07 made in the lateral surface 06 of the cylinder 02. If the elevator 01 completely spans the cylinder 02, a single opening 07 of this type in the cylinder 02 may be sufficient (FIG. 1).
• the opening 07 leads to a channel 08 running along the cylinder 02, in which a holding device, for. B. is a clamping device, the z. B. essentially consists of a in the bottom 09 of the channel 08 in a groove 11 pivotally mounted holding means 12 and a spring element 14 clamped between a wall 13 of the channel 08 and the holding means 12 (FIG. 1).
• the holding means 12 which is advantageously designed as a rigid lever, can be pivoted against the force of the spring element 14 by an adjusting means 16 which is supported in the channel 08, in order to release a clamping carried out with the holding means 12 on a second wall 17 of the opening 07 ,
• the holding means 12 thus has an operating position a holding position, in particular a clamping position and a release position.
• Such a clamping device is such. B. described in DE 100 58 996 C1. To explain further details of the clamping device and its mode of operation, reference is expressly made to the aforementioned document.
• a bracket 21, z. B. is provided along the cylinder 02 traverse 21, wherein a device for pressing an elevator 01 to the cylinder 02 of the printing press with the help of pressing elements 31; 32, preferably rolling elements 31; 32 is arranged on the holder 21, the rolling elements 31; 32 can be turned on or off the cylinder 02.
• a first carrier 22 with a first end 23 and a second end 24 and a second carrier 26 with a first end 27 and a second end 28 are provided, in one embodiment the first end 23 of the first carrier 22 with the longitudinal of the cylinder 02 extending cross member 21 is fixedly connected.
• At least one first rolling element 31 is arranged on the second end 24 of the first carrier 22.
• first end 27 of the second carrier 26 is preferably fixedly connected to the first carrier 22, preferably to the second end 24 thereof, the first carrier 22 and the second carrier 26 being arranged essentially stacked on one another, the first end 27 of the second carrier 26 is preferably flush with the second end 24 of the first carrier 22.
• At least one second rolling element 32 is arranged on the second end 28 of the second carrier 26.
• the first rolling element 31 and the second rolling element 32 are thus spaced one behind the other in the circumferential direction of the cylinder 02, so that - as can be seen from the figures - a so-called double roller or tandem roller arrangement results.
• tandem arrangement indicates that two essentially identical components, here pressing elements or rolling elements, are arranged one behind the other in the circumferential direction of the cylinder.
• a first adjusting means 33 acting on the first carrier 22 and a second adjusting means 34 acting on the second carrier 26 are provided, the first adjusting means 33 and the second adjusting means 34 being operable independently of one another.
• Such an independent on and off ability of the rolling elements 31; 32 is particularly advantageous if several elevators 01 are arranged side by side on the cylinder 02 in the axial direction and individual elevators 01 are to be selectively clamped or unclamped. So z. B.
• the adjusting means 33; 34 are e.g. B. as a pressurized, reversibly deformable hollow body, for. B. as a hose 33; 34, executed.
• the first actuating means 33 acting on the first carrier 22 can, for. B. against a fixed to the cross member 21 or molded there rigid stop 29 because the first actuating means 33 is arranged in particular between the cross member 21 or the stop 29 and the first support 22, whereas the second acting on the second support 26
• Adjusting means 34 is preferably arranged between the first carrier 22 and the second carrier 26 and is preferably supported on the first end 23 of the first carrier 22 connected to the cross member 21.
• the carrier 22; 26 each form as an elastically bendable, ie reversibly deformable body, in particular in a sheet-like form, for. B. as a Spring plate 22; 26. If a carrier 22; 26 by actuating an associated adjusting means 33; 34 can be bent elastically around a rolling element 31; 32 to start on the cylinder 02, no additional means are required to the on the carriers 22; 26 arranged rolling elements 31; 32 after actuation of the associated adjusting means 33; 34 again from the cylinder 02. In this embodiment, the carrier 22; 26 back to its original position without the involvement of external forces.
• the rolling elements 31; 32 can be used as a roller 31; 32 or a roller 31; 32 be formed.
• a plurality of first supports 22, each with at least one first rolling element 31, can also be arranged next to one another on the crossmember 21, these rolling elements 31 being able to be switched on or off independently of one another or in groups by the first actuating means 33 associated with their supports 22 on the cylinder 02.
• a preferred embodiment provides that a roller 31 extending along the cylinder 02 and a plurality of second carriers 26 with at least one roller 32 are arranged on the first carrier 22. This embodiment is particularly useful when the cylinder 02 has several elevators 01 next to each other and a second carrier 26 with at least one second rolling element 32 is assigned to each elevator 01.
• the device for pressing an elevator 01 against a cylinder 02 of a printing press can be pressed with the aid of pressing elements 31; 32 can be configured such that a plurality of elevators 01 can be arranged next to one another in the axial direction on the cylinder 02, pressure elements 31; 32 independent of another elevator 01 assigned pressure elements 31; 32 can be turned on or off the cylinder 02, wherein
• This device is characterized in that the pressing elements 31; 32 as rolling elements, in particular as rollers 31; 32 are formed.
• the pressing elements 31; 32 or rolling elements 31; 32 be turned on at least temporarily during the rotation of the cylinder 02.
• the device for pressing an elevator 01 against a cylinder 02 of a printing press with the aid of rolling elements 31; 32 has both a plurality of first rolling elements 31 and a plurality of second rolling elements 32 in the axial direction of the cylinder 02, the second rolling elements 32 being arranged at a distance from the first rolling elements 31 in the circumferential direction of the cylinder 02. It is then distinguished by the fact that individual or groups of second rolling elements 32 can be set on cylinder 02 or can be switched off independently of individual or groups of first rolling elements 31. However, it is also possible for all of the first rolling elements 31 to be turned on and for the second rolling elements 32 to be partially turned on or off.
• the hanging leg 03a is preferably tangential at the leading end of the elevator 01 brought up to the outer surface 06 of the cylinder 02 and hung on the first wall 04 of the opening 07 made in the outer surface 06 of the cylinder 02.
• the cylinder 02 is then rotated in its production direction P until the suspension leg 03b is present at the trailing end of the elevator 01 on the second wall 17 of the same or a second opening 07 of the same design, offset on the circumference of the cylinder 02 from the first opening 07, the Rolling elements 32 press the elevator 01 onto the lateral surface 06 of the cylinder 02.
• the rolling element 32 closest to the trailing end of the elevator 01 presses the hanging leg 03b into the opening 07 and the holding means 12 holding the elevator 01 changes from its release position to its holding position.
• the rolling elements 31; 32 are placed on one or more elevators 01 resting on the lateral surface 06 of the cylinder 02.
• the cylinder 02 rotates until the rolling element 32 arranged on the second carrier 26 is in contact with the hanging leg 03b of the trailing end of an elevator 01 to be braced.
• the rolling element 32 which is present on the hanging leg 03b of the trailing end of the elevator 01 to be anchored is turned off by the cylinder 02 and the holding means 12 of the holding device preferably changes into its release position by pivoting, whereupon the hanging leg 03b at the trailing end of the elevator 01 to be anchored automatically by its own tension from the Opening 07 springs out, while the hanging legs 03b remain at the trailing end of further lifts 01 resting on the cylinder 02 due to the rolling elements 32 pressing against the second wall 17 of the opening 07.
• the holding means 12 of the holding device preferably changes again into its holding position and the cylinder 02 rotates counter to its production direction P until the hanging leg 03a can be detached from the first wall 04 of the opening 07 at the leading end of the elevator 01 to be anchored and can thus be removed from the cylinder 02 ,
• the rolling elements 31; 32 are parked by all the elevators 01 resting on the lateral surface 06 of the cylinder 02.
• the cylinder 02 rotates until the rolling element 32 arranged on the second carrier 26 is above the hanging leg 03b at the trailing end of the elevators 01, i. H. is still out of contact, but is still in its immediate vicinity.
• the holding means 12 of the holding device preferably changes into its release position by swiveling, whereupon the hanging leg 03b automatically springs out of the opening 07 at the trailing end of all the lifts 01. Apart from their trailing ends, the elevators 01 remain fixed on the lateral surface 06 of the cylinder 02 due to the rolling elements 31 placed on the cylinder 02.
• the holding means 12 of the holding device changes back into its holding position and all rolling elements 31; 32 are turned off by cylinder 02.
• the cylinder 02 now rotates counter to its production direction P until the suspension leg 03a can be detached from the first wall 04 of the opening 07 at the leading end of the elevator 01 to be anchored and can thus be removed from the cylinder 02.
• FIG. 7 shows an assignment of rolling elements 32 arranged on a plurality of second carriers 26 to a plurality of elevators 01 which are applied next to one another on a cylinder 02 during the bracing of one of these elevators 01.
• three rolling elements 32 are assigned to one elevator 01.
• These rolling elements 32 can be independent of the other rolling elements 31; 32 can be turned on or off by the cylinder 02, while z. B. adjacent lifts 01 are pressed onto the outer surface 06 of the cylinder 02.
• the rolling element 31 here is a continuous roller 31, whereas the rolling element 32 consists of several individual rollers 32.
• the rolling elements 31; 32 are spaced apart from one another in the circumferential direction of the cylinder 02.
• the roller 31 is in contact with all the elevators 01 lying side by side on the cylinder 02, while the trailing end of the elevator 01 to be braced is released.
• the rolling elements 31; 32 preferably with pneumatically actuated adjusting means 33; 34 turned on or off the cylinder 02.
• the rolling elements 31; 32 are started on all the elevators 01 lying on the lateral surface 06 of the cylinder 02.
• the cylinder 02 rotates until the rolling element 32 arranged on the second carrier 26 is located above the opening 07 at the trailing end of an elevator 01 to be braced.
• the holding means 12 of the holding device changes into its release position.
• the rolling element 32 arranged on the second support 26 is turned off by the cylinder 02 and the suspension leg 03b at the trailing end of the elevator 01 to be anchored releases due to its inherent tension from the opening 07, the elevator 01 on the lateral surface 06 of the Cylinder 02 remains fixed due to the pressure of the first rolling element 31.
• the end of the elevator 01 to be braced tends to assume an extended position, this end of the elevator 01 remaining in contact with the rolling element 32 over a certain spring travel when it springs out of the opening 07.
• the spring-out end thus follows the rolling element 32 lifting off the cylinder 02.
• the hanging legs 03b of the other lifts 01 remain in the opening 07 because the ends of these lifts 01 remain pressed against the lateral surface 06 of the cylinder 02 by the first rolling element 31 assigned to them.
• the length of the released end of an elevator 01 to be removed from the cylinder 02 is determined by the distance of the point of contact of the first rolling element 31 on the cylinder 02 from the opening 07.
• the holding means 12 of the holding device changes into its holding position and all rolling elements 31; 32 or at least the first rolling elements 31 at the front in the production direction P can be turned off by the cylinder 02. Thereafter, after a rotation of the cylinder 02 against its production direction P, the elevator 01 to be braced can be removed from the lateral surface 06 of the cylinder 02.
• Rolling element first; pressing element; Role; Roller rolling element, second; pressing element; Role; Roller adjusting means, first; Hose adjusting means, second; tube

Landscapes

• Rolls And Other Rotary Bodies (AREA)
• Rotary Presses (AREA)
• Inking, Control Or Cleaning Of Printing Machines (AREA)
• Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
• Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)

Priority Applications (2)

Applications Claiming Priority (3)

Related Child Applications (4)

Publications (2)

Family

ID=30010620

Family Applications (6)

Family Applications After (5)

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Family Cites Families (15)

• 2002
  • 2002-08-21 DE DE10238177A patent/DE10238177B3/de not_active Expired - Fee Related
• 2003
  • 2003-08-07 DE DE50312245T patent/DE50312245D1/de not_active Expired - Lifetime
  • 2003-08-07 EP EP03790688A patent/EP1530516B1/fr not_active Expired - Lifetime
  • 2003-08-07 EP EP05100974A patent/EP1543968A3/fr not_active Withdrawn
  • 2003-08-07 WO PCT/DE2003/002651 patent/WO2004020198A2/fr active IP Right Grant
  • 2003-08-07 AT AT05100934T patent/ATE340078T1/de not_active IP Right Cessation
  • 2003-08-07 AT AT05100932T patent/ATE452026T1/de not_active IP Right Cessation
  • 2003-08-07 US US10/524,878 patent/US7237484B2/en not_active Expired - Fee Related
  • 2003-08-07 AU AU2003266108A patent/AU2003266108A1/en not_active Abandoned
  • 2003-08-07 ES ES05100934T patent/ES2270404T3/es not_active Expired - Lifetime
  • 2003-08-07 AU AU2003266109A patent/AU2003266109A1/en not_active Abandoned
  • 2003-08-07 AT AT03790689T patent/ATE350218T1/de not_active IP Right Cessation
  • 2003-08-07 AT AT03790688T patent/ATE448083T1/de not_active IP Right Cessation
  • 2003-08-07 EP EP05100932A patent/EP1535734B1/fr not_active Expired - Lifetime
  • 2003-08-07 CN CNB038195771A patent/CN1328047C/zh not_active Expired - Fee Related
  • 2003-08-07 US US10/525,018 patent/US7240616B2/en not_active Expired - Fee Related
  • 2003-08-07 EP EP03790689A patent/EP1530513B1/fr not_active Expired - Lifetime
  • 2003-08-07 DE DE50312116T patent/DE50312116D1/de not_active Expired - Lifetime
  • 2003-08-07 EP EP05100973A patent/EP1543967A3/fr not_active Withdrawn
  • 2003-08-07 EP EP05100934A patent/EP1535735B1/fr not_active Expired - Lifetime
  • 2003-08-07 ES ES03790689T patent/ES2277140T3/es not_active Expired - Lifetime
  • 2003-08-07 DE DE50306205T patent/DE50306205D1/de not_active Expired - Lifetime
  • 2003-08-07 WO PCT/DE2003/002650 patent/WO2004020205A2/fr not_active Application Discontinuation
  • 2003-08-07 DE DE50305132T patent/DE50305132D1/de not_active Expired - Lifetime

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