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
  • B41F27/1206—Feeding to or removing from the forme cylinder
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F30/00—Devices for attaching coverings or make-ready devices; Guiding devices for coverings
  • B41F30/04—Devices for attaching coverings or make-ready devices; Guiding devices for coverings attaching to transfer cylinders
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
  • B41P2227/40—Adjusting means for printing plates on the cylinder
  • B41P2227/41—Adjusting means for printing plates on the cylinder axially
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2227/00—Mounting or handling printing plates; Forming printing surfaces in situ
  • B41P2227/60—Devices for transferring printing plates
  • B41P2227/62—Devices for introducing printing plates

Definitions

• the invention relates to devices and methods for aligning or assembling an elevator brought up to a cylinder of a printing press according to the preamble of claim 1, 14, 16, 19, 25 or 27.
• DE 100 24 329 A1 discloses a device for assembling and disassembling at least one elevator on or from a cylinder of a printing press with the aid of a plurality of rollers arranged along the cylinder, with a stop arranged fixedly and spaced apart from the cylinder with a Cylinder-facing slope supports the exact creation of an end of the elevator that leads in the direction of assembly. Furthermore, one or more rollers can be pivoted in the mounting direction in front of the stop and can be adjusted to the cylinder. According to one exemplary embodiment, a bent end of a printing form lies on the cylinder in front of a channel opening in the production direction of the cylinder, while this end strikes the stop. This arrangement cannot effectively support the insertion of a hanging leg formed on the leading end of the elevator into an opening in the cylinder.
• a device for changing printing forms on rotary printing presses in which a printing form removed from a form cylinder, after being completely removed from the form cylinder, temporarily rests with its bent front end on a pressure roller set on the form cylinder, until in further course of the removal of the printing form, this is conveyed upwards against the force of gravity along an extension slope until the front end of the printing form is in contact with one in the front area of the Discharge slopes arranged angled bracket is finally put down.
• the device For a new printing form to be mounted on the forme cylinder, the device has two holding elements which delimit an insertion bevel in the front area and can be moved linearly in opposite directions in the axial direction of the forme cylinder, on which the front end of the printing form to be newly mounted rests until the new printing form is assembled , To assemble the new printing form, the holding elements are moved away to the side so that they open the way to the form cylinder for the new printing form.
• the invention has for its object to provide devices and methods for aligning or mounting an elevator brought up to a cylinder of a printing press.
• FIG. 1 shows a device for aligning an elevator which is brought up to a cylinder of a printing press with a stop and a rolling element which is parked by the cylinder;
• FIG. 2 shows a device for aligning an elevator brought up to a cylinder of a printing press with a stop and a rolling element set by the cylinder;
• FIG 3 shows a device for aligning an elevator brought up to a cylinder of a printing press with a rolling element as a stop.
• a printing press e.g. B. a web rotary offset printing press
• the forme cylinder 02 has on its lateral surface 04 at least one slot-shaped opening 06, preferably running longitudinally to the forme cylinder 02, into which a bevel 07 attached to one end of the elevator 01 can preferably be hooked in a form-fitting manner.
• the elevator 01, the z. B. is designed as a plate-shaped printing form 01 or as a carrier plate carrying a printing blanket, has a substantially rectangular surface the length L and the width.
• the surface has a support side with which the elevator
• the side opposite the support side is a work surface which, in the event that the elevator 01 is designed as a printing form 01, is provided with a printed image or at least can be provided with a printed image.
• the elevator 01 has two opposite ends, the bevel 07 being attached as an angled hanging leg to at least one end, the hanging leg extending over the width of the elevator 01.
• the surface of the elevator 01 is flexible at least along the length L and can be adapted to the curvature of the peripheral surface 04 when the elevator 01 is applied to the lateral surface 04 of the cylinder 02. In the assembled state of the printing form 01, the length L of the surface thus runs in the direction of the circumference of the cylinder 02, whereas the width of the surface extends in the axial direction of the cylinder 02.
• the at least one suspension leg of the elevator 01 is fastened by means of a holding device, the holding device being arranged in a channel, the channel i. d. R. extends in the axial direction to the cylinder 02.
• An end of elevator 01 which is aligned with the production direction P of cylinder 02 is referred to as its leading end, whereas the opposite end is the trailing end of elevator 01.
• the production direction P is the cylinder
• At least the ends of the elevator 01 with the hanging legs formed thereon consist of a rigid, for. B. metallic material, e.g. B. made of an aluminum alloy.
• the material thickness of the elevator 01 or the material thickness of at least the hanging legs is a few tenths of a millimeter, e.g. B. 0.2 mm to 0.4 mm, preferably 0.3 mm.
• the elevator 01 as a whole or at least at its ends is made of a dimensionally stable material, so that the ends can be permanently deformed by bending against a material-specific resistance.
• hooked legs are formed on both ends of the elevator 01 along a bending edge, the hooked legs being insertable into a narrow, in particular slot-shaped opening 06 of the cylinder 02 and being fastened there by means of the holding device.
• the opening angle ⁇ 1; ß1 are usually between 30 ° and 140 °. If the opening angle ⁇ 1 is assigned to the leading end of the elevator 01, it is preferably embodied at an acute angle, in particular it is 45 °.
• the opening angle ⁇ 1 at the trailing end of the elevator 01 is often preferably designed to be larger than 80 ° or obtuse angle, in particular it is 85 ° or 135 °.
• the folded hook leg at the leading end has a length 11, which, for. B. is in the range of 4 mm to 11 mm, in particular between 4 mm and 8 mm, with 6 mm being the preferred dimension.
• the folded hook leg at the trailing end has a length 12, the z. B. 6 mm to 15 mm, in particular 8 mm and 12 mm, with the shorter length being preferred, in order to ensure that the hanging legs can be removed from the opening 06 of the cylinder 02 as simply as possible.
• the cylinder 02 has at least one narrow, slot-shaped opening 06 with the slot width S on its lateral surface 04, the slot width S being less than 5 mm and preferably being in the range from 1 mm to 3 mm.
• the opening 06 has a front edge 26 and a rear edge 27 in the production direction P of the cylinder 02.
• An acute opening angle ⁇ 2 is formed between the wall extending from the front edge 26 to the channel and an imaginary first tangent T1 lying on the lateral surface 04 of the cylinder 02 on the opening 06, which is between 30 ° and 50 °, preferably 45 ° is.
• the beveled hanging leg at the leading end of the elevator 01 is thus at this front edge 26 of the opening 06 preferably can be attached in a form-fitting manner because the suspension leg at the leading end of the elevator 01 is preferably adapted in its opening angle ⁇ 1 to the opening angle ⁇ 2.
• An opening angle ⁇ 2 is formed between the wall extending from the rear edge 27 to the channel and an imaginary first tangent T1 resting on the lateral surface 04 of the cylinder 02 on the opening 06 , which is between 80 ° and 95 °, preferably 90 °, or between 120 ° and 150 °, preferably 135 °.
• the beveled hanging leg at the trailing end of the elevator 01 can thus preferably be positively attached to this rear edge 27 of the opening 06 because the beveled hanging leg at the trailing end of the elevator 01 is at least approximately matched in its opening angle ⁇ 1 to the opening angle ⁇ 2.
• z. B at least one preferably pivotally mounted holding means and a preferably biased spring element, the spring element, the holding means z. B. presses against the folded hook leg at the trailing end, which is hooked into the opening 06 on its rear edge 27, whereby the hook leg is held at the trailing end on the wall extending from the rear edge 27 towards the channel.
• an adjusting means is provided in the channel, which, when actuated, pivots the holding means against the force of the spring element.
• the holding device accordingly essentially consists of the holding means, the spring element and the adjusting means.
• the cylinder 02 can be designed such that several, preferably identical, lifts 01 can be arranged on its lateral surface 04. If the cylinder 02 is designed as a forme cylinder 02, it can z. B. can be assigned with six plate-shaped printing plates 01. It can also be provided that more than one elevator 01 can be attached to the cylinder 02 in the direction of its circumference is. So z. B. two axially extending to the cylinder 02 channels are provided with associated openings 06, which are arranged on the circumference of the cylinder 02 offset by 180 ° to each other.
• the elevators 01 arranged next to one another in the axial direction of the cylinder 02 can also be arranged offset with respect to one another, for. B. individually or in pairs in each case by half a length L of the elevator 01, which however requires that additional channels with associated openings 06 or at least parts thereof are introduced into the cylinder 02, which along the circumference of the cylinder 02 to the two aforementioned channels and Openings 06 z. B. are arranged offset by 90 °.
• the z. B. can be a rigid hollow profile with a square cross section and the z. B. is fixed to the forme cylinder 02.
• the z. B. can be an L-shaped bar, a support 11 is attached, which has a first end 12 with which the support 11 is attached to the cross member 08 or to the connector 09.
• the first end 12 of the carrier 11 is preferably fastened with a connecting element 13, which can be a screw 13 or a rivet 13.
• the first end 12 of the carrier 11 is therefore not articulated, but in particular rigidly clamped.
• At least one stop 14 angled toward the forme cylinder 02 is attached to the first end 12 of the carrier 11 or to the connecting piece 09.
• the stop 14 has z. B. at least on the a slope 23 directed towards the lateral surface 04 of the cylinder 02 facing the supplied elevator 01, an imaginary rectilinear extension of these slopes 23 intersecting the lateral surface 04 of the cylinder 02 at a point C.
• the angle ⁇ facing the elevator 01 (shown as an apex angle in FIG.
• the stop 14 is at most 90 °, preferably 40 ° to 60 °, in particular 45 °.
• the stop 14 is arranged so close to the lateral surface 04 of the cylinder 02 that an elevator 01, which is preferably brought tangentially to the forme cylinder 02 and is to be assembled, simultaneously strikes both the stop 14 and its bevel 07 attached to its leading end on the lateral surface 04 of cylinder 02 rests.
• the stop 14 can be designed as a bar 14, which preferably extends longitudinally to the forme cylinder 02 and consists either in one piece or from a plurality of pieces, optionally spaced apart. Such a bar 14 can simultaneously z. B. take over the function of a finger guard between the forme cylinder 02 and the impression cylinder 03.
• the stop 14 can, for. B. by means of the previously described connecting element 13 on the carrier 11 or on the connector 09.
• the axis of rotation 18 of the rolling element 17 therefore runs longitudinally to the forme cylinder 02.
• the rolling element 17 is preferably designed as at least one or more rollers 17 or as a roller 17.
• the rolling element 17 is arranged behind the stop 14 in the mounting direction M of the elevator 01, so that the stop 14 first folds the bevel 07 of the elevator 01 to be mounted on the forme cylinder 02 into the lateral surface 04 of the Form cylinder 02 introduced opening 06 feeds.
• the fold 07 of the elevator 01 stands in the production direction P of the forme cylinder 02 behind the opening 06 on the lateral surface 04 of the forme cylinder 02.
• the stop 14 and the lateral surface 04 of the forme cylinder 02 which can be a linear movement of the stop 14 directed against the mounting direction M of the elevator 01, but which is preferably a rotation of the forme cylinder 02 in its production direction P, the fold 07 pushed in the direction of the opening 06 and hooks into the opening 06 in that the fold 07 falls into the opening 06 due to the weight of the elevator 01.
• the elevator 01 is pulled under the stop 14, ie between an end 22 of the stopper 14 and which is located at a small vertical distance a14 from the lateral surface 04 of the forme cylinder 02 and preferably faces the forme cylinder 02 this lateral surface 04 of the forme cylinder 02.
• the distance a14 is only a few millimeters, z. B. 1 to 3 mm. This distance a14 is thus less than a distance a07, which is the height of the bend 07 when this bend 07 stands on the lateral surface 04 of the forme cylinder 02 and has not yet been inserted into the opening 06.
• a distance a07 which is the height of the bend 07 when this bend 07 stands on the lateral surface 04 of the forme cylinder 02 and has not yet been inserted into the opening 06.
• the carrier 11 itself can advantageously as an elastically bendable, i.e. H. reversibly deformable body, which is preferably designed in sheet form. So the carrier 11 z. B. may be formed as a spring plate 11 firmly clamped at its first end 12.
• an actuating means 19 can be provided, the actuating means 19 preferably as a reversibly deformable hollow body 19, for example a pressure medium that can be acted upon by a pressure medium.
• B. is designed as a hose 19.
• the actuating means 19 acts when it is actuated, i. H. z. B. when it is acted upon by the pressure medium on the one hand on the carrier 11 and on the other hand is supported on the cross member 08 (Fig. 1).
• the second end 12 of the carrier 11 can be deflected in the direction of the forme cylinder 02 by an elastic bending of the carrier 11 and the rolling element 17 can be adjusted to the forme cylinder 02 (FIG. 2).
• the carrier 11 Upon completion of the actuation of the actuating means 19, the carrier 11 returns due to its elasticity, ie. H. its resilient nature in its original position. As a result, the rolling element 17 is switched off again from the outer surface 04 of the forme cylinder 02 or from an elevator 01 resting on the outer surface 04 of the forme cylinder 02, i. H. out of contact.
• FIG. 1 and 2 thus show the same exemplary arrangement of a device for guiding, aligning and pressing an elevator 01 against a cylinder 02 of a printing press in two different operating states, namely in FIG. 1 in the operating state with a rolling element 17 turned off and in FIG 2 in the operating state with an engaged rolling element 17.
• the device proposed on the cylinder 02 The elevator 01 brought in is aligned with an opening 06, which is preferably slit-shaped and is made in the cylinder 02, so that a bend 07 in the production direction P of the cylinder 02 at the leading end of the elevator 01 can be fastened in the opening 06.
• the adjusting means 19 is installed between the carrier 11 and the cross member 08, it is advantageous, for. B. on the carrier 11 to mold or attach a bar 21 which protects the actuating means 19 from inadvertent slipping out or removal from its location.
• a bar arranged close to cylinder 02 with the function of a stop has been dispensed with.
• At least one rolling element 17 which can preferably be turned on or off the cylinder 02, e.g. B.
• a roller or one or more rollers extending longitudinally to the cylinder 02 assumes the function of the stop here by an elevator 01, preferably brought tangentially to the cylinder 02, striking the circumference U of the rolling element 17 within an arc piece b17 facing the cylinder 02, wherein an attachment point A of the elevator 01 on the rolling element 17 is spaced less from the lateral surface 04 of the cylinder 02 than the distance a18 of the axis of rotation 18 of the rolling element 17 from the lateral surface 04 of the cylinder 02.
• the arc piece b17 lies between two legs 28; 29 of an opening angle ⁇ , where an apex of the opening angle ⁇ coincides with the axis of rotation 18 of the rolling element 17, a leg 28 of the opening angle ⁇ forms a perpendicular from the apex to the lateral surface 04 of the cylinder 02 and the opening angle ⁇ is at most 60 °, in particular at most 45 ° is.
• the bend 07 at the front end of the printing form 01 is simultaneously in contact both with the rolling element 17 and with the lateral surface 04 of the cylinder 02.
• the rolling element 17 orients the elevator 01 longitudinally to the cylinder 02.
• the rolling element 17 positioned on the cylinder 02 rolls on the lateral surface 04 of the cylinder 02 such that the rolling element 17 the elevator 01, which strikes the rolling element 17 with its bevel 07, leads into an opening 06, preferably slot-shaped, which is introduced into the lateral surface 04 of the cylinder 02 and presses in there for the purpose of holding it.
• an operating state also arises in which the elevator 01 brought up to the cylinder 02 strikes the bent piece b17 at its leading end with the bent portion 07 and at the same time at least partially into the opening 06 made in the lateral surface 04 of the cylinder 02 protrudes.
• the elevator 01 brought up to the cylinder 02 is therefore preferably also aligned with respect to the opening 06 in the cylinder 02, in which the fold 07 of the elevator 01 is held.
• the end of the elevator 01 that is to be aligned on the lateral surface 04 of the cylinder 02 is preferably the end of the elevator 01 that also runs in the production direction P of the cylinder 02.

Landscapes

• Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
• Rotary Presses (AREA)
• Rolls And Other Rotary Bodies (AREA)
• Cage And Drive Apparatuses For Elevators (AREA)
• Lining Or Joining Of Plastics Or The Like (AREA)

Priority Applications (4)

Applications Claiming Priority (5)

Related Child Applications (8)

Publications (2)

Family

ID=26010663

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Family Applications Before (4)

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• 2002
  • 2002-11-28 EP EP04102585A patent/EP1459892B1/fr not_active Expired - Lifetime
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  • 2002-11-28 DE DE50205673T patent/DE50205673D1/de not_active Expired - Lifetime
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  • 2002-11-28 WO PCT/DE2002/004364 patent/WO2003047863A2/fr not_active Application Discontinuation
  • 2002-11-28 DE DE50205674T patent/DE50205674D1/de not_active Expired - Fee Related
  • 2002-11-28 EP EP04102590A patent/EP1459893B1/fr not_active Expired - Lifetime
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  • 2002-11-28 EP EP04102593A patent/EP1459894B1/fr not_active Expired - Lifetime
  • 2002-11-28 AT AT04102593T patent/ATE314201T1/de not_active IP Right Cessation
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