EP1535736A2 - Method for exchanging at least one printing plate of a plate cylinder - Google Patents

Abstract

The printing plate (01) is a thin sheet of e.g. aluminum with inwardly bent hooks (13,14) engaging in an undercut groove with a narrow entrance and a hollow cylindrical interior. The first end of the plate (03) has a sharp bend with an angle (alpha 1) of approximately 45 degrees. It fits over a sharp lip in the edge of the groove in the printing plate. The second end of the printing plate (04) has an angle (beta 1) of 90 degrees, and fits over a 90 degree edge of the groove, opposite the sharp lip. A spring pushes a clamping plate against the second hooked edge of the printing plate.

Description

The invention relates to a method for changing at least one printing plate on a Form cylinder according to the preamble of claim 1.

From DE 39 40 795 A1 discloses a method and a device for automatic Feeding a printing plate to a plate cylinder or discharging one Plate cylinder a rotary printing machine known. The procedure for automatically feeding a printing plate to a plate cylinder Rotary printing machine, wherein the plate cylinder u. a. Means for clamping and Clamping the pressure plate, provides that the pressure plate into a Storage chamber a Druckplattenzuführ- or -abführvorrichtung provided, the Turned plate cylinder in a Druckplattenzuführstellung and the pressure plate by means of fed to a number of transport rollers of a clamping device of the plate cylinder becomes. The method for automatically discharging a printing plate from a Plate cylinder of a rotary printing machine, wherein the plate cylinder u. a. Means to Relaxing and releasing the pressure plate, characterized by the fact that the Plate cylinder forward in a printing plate release position twisted that one Clamping flap for detecting a pressure plate end opened that the plate cylinder turned backwards, that a clamping flap for detecting a Druckplattenanfangs opened and that the pressure plate by means of a number of transport rollers a Storage chamber is fed to a Druckplattenzuführ- or -abführvorrichtung. The Means for performing the aforementioned method has at least one as one Drive roller trained and designed as a pressure roller transport role, wherein the pressure roller is adjustable to the drive roller. In addition, various Adjusting means, a pivotally mounted pressure roller for pressing the pressure plate on be provided the plate cylinder and ejection finger, the ejection fingers Having tips that can be pivoted into the periphery of the plate cylinder are arranged. Also, the storage chamber of Druckplattenzuführ- or -abführvorrichtung be pivotally mounted about a hinge.

DE 39 40 796 A1 describes a device for automatically changing a Printing plate on a plate cylinder of a rotary printing machine, wherein the Plate cylinder u. a. Having means for clamping and clamping the pressure plate, wherein the printing plate changing device has at least two storage chambers, so one on the plate cylinder dissolved pressure plate by means of transport rollers in the one Storage chamber can be guided while one in the other storage chamber stored pressure plate by means of transport rollers of a clamping device of the Plate cylinder is supplied.

EP 1 084 837 A1 describes a device for holding and conveying a Printing form. In this case, the device has translational conveying devices, the one on a forme cylinder to be mounted printing form or one of a forme cylinder promote printing form to be removed. While the device is from a rest position in their operating position is tilted about a rotation axis for changing a printing form, pivots a hook only due to its own weight in the room in which the Printing form is stored and secures the printing forme at its trailing bevelled End from accidental falling out of this room.

EP 0 734 859 A1 describes a device for changing printing forms, wherein a printing form loading unit for changing printing forms from a vertical Resting position pivots on a designed as a gripper holding element. To the Assembling, the holding member grips a new one provided in the printing form loading unit Printing form and leads with the gripped printing form by means of an actuated lifting cylinder a pivoting movement. Thus, by the pivotal movement of the retaining element the rectilinear stored in a Druckformzuführfach printing form in its front Raised area, with the leading end of the printing plate hanging down. The taken from the holding element, curved printing forme is with its leading end of Retaining element pivoted against a forme cylinder such that one at the leading End of the printing form trained suspension leg in one on the forme cylinder formed channel with a relative to the diameter of the forme cylinder can dive large opening width.

DE 199 34 271 A1 discloses a pivotable printing plate changing device known, one on a printing form table by a contact body frictionally fixed printing form by a pivoting movement of the printing form table to a Printing forme cylinder is made such that there is a printing form table superior End of the printing form with the hiring one formed at the end of the printing form Bending deformed on printing forme cylinder and that this biased end at Slow rotation of the plate cylinder in a clamping channel of the plate cylinder snaps. There is no relative movement between the on the printing table resting pressure form and the contact body instead.

From EP 0 678 383 A1 an apparatus for changing printing forms is on Rotary printing machines known, wherein pivotable acted upon by negative pressure Holding means a leading end of a to be mounted on a forme cylinder Pull the printing forme to the forme cylinder and this end elastically deformed to the Turn on the form cylinder. During a rotation of the forme cylinder snaps one Bending at the leading end of the printing form in an opening of the cylinder, wherein the force required by the holding means to snap the printing form leading edge is applied.

From EP 0 678 382 A1 an apparatus for the exchange of printing forms is on Rotary printing machines known, with pressurizable holding means a leading end of a printing forme to be mounted on a forme cylinder Apply an adjusting force to the forme cylinder, resulting in this end elastically deformed. The contact force leaves such a biased fold on leading end of the printing forme in an opening of the cylinder during its rotation snap.

EP 0 734 860 A1 discloses a device for changing printing forms. wherein pivotable, preferably acted upon by vacuum holding means a leading end of a printing forme to be mounted on a forme cylinder to the Make form cylinder, whereby this end deforms elastically.

By EP 1 155 840 A2 and JP 2000-094 640 AA are each a device known for changing printing forms, with a fold at the leading end a to be mounted on a forme cylinder printing form after a job on Form cylinder is pressed by a rolling element in an opening of the cylinder. In the Device according to EP 1 155 840 A2, the printing forme to be mounted with an am Trailing end of this printing form attacking thrust from a magazine promoted and biased using the elasticity of the printing form to the Form cylinder employed. In the apparatus of JP 2000-094 640 AA, the Bending at the leading end of the printing plate to be mounted in the lower half the form cylinder and against the force of gravity into the opening of the cylinder pressed.

DE 44 47 088 C1 discloses a method and a device for mounting a flexible printing form, wherein a radially and axially movable in front of the cylinder Feeding slide with a Einführschieber for mounting a Einhängeschenkels on Trailing end of the printing form with a preferably conical, in one Recess of the cylinder cross, radially movable, but otherwise fixed to the frame Locking bolt can be locked in a defined position to the cylinder.

DE 42 24 832 C2 discloses a device for positioning a automatic printing plate changing magazine known, the vertical Adjustability of the magazine in the plate changing position locked by locking becomes.

By DE 198 03 726 A1 is an adjustable suspension for a printing unit protection known, the printing mechanism protection slidable bolts and a bolt having actuating device, wherein the bolts for a locking of the Druckwerkschutzes be inserted into side frame walls of a printing unit.

DE 196 03 663 A1 and DE 199 42 619 A1 each have a printing unit for the flying printing plate change on a web-fed rotary offset printing machine known, with an on-off mechanism is provided by means of which the Plate cylinder from its associated blanket cylinder for plate change can be turned off.

From DE 100 08 936 A1 a web-fed rotary offset printing press with several, arranged one behind the other, each two forme cylinder and two facing each other, having a printing material between them receiving transfer cylinder Double printing units known, the double printing units with a device for provided to each other on or from each other parking the adjacent cylinders are. Of the double printing units are two adjacent double printing units for alternating printing operation of at least one of its halves with flying change set up during the run of the machine.

The invention is based on the object, a method for changing at least one To create a printing forme on a forme cylinder.

The object is achieved by the features of claim 1.

The advantage achievable with the invention is in particular that lifts on a cylinder with the least possible expenditure on equipment quickly and reliably current production of the printing press can be changed. In one execution the change of the printing plate without a pressing element, whereby a special simple structural design is possible. As a result, the printing forme magazine before the feeding of a printing plate relative to the forme cylinder in a predefined position are brought to the forme cylinder itself no means for aligning to required. The printing form comes with a structurally simple Sled, on which the printing form rests only by gravity, in the moved to desired position for their assembly to the forme cylinder. The as simple and unobstructed mobility of the front of the forme cylinder positioning printing forme magazine is advantageously by a connecting element ensured, which summarizes all necessary connection lines bundling. All movements required to change a printing form, d. H. the movement process all the aggregates involved are assigned by one of the printing presses, Preferably central control from possible so that an operator during the Print form change on the current printing machine does not have to do any work.

Embodiments of the invention are illustrated in the drawings and are in Described in more detail below.

Fig. 1

eine perspektivische Darstellung eines Aufzugs;

Fig. 2

eine vereinfachte Schnittdarstellung einer Haltevorrichtung für einen auf einem Zylinder zu montierenden Aufzug;

Fig. 3

tangential an einen Zylinder herangeführte Aufzüge, auf die bei ihrer Montage eine Radialkraft wirkt;

Fig. 4

elastisch vorgespannte Aufzüge bei ihrer Montage auf einem Zylinder;

Fig. 5

eine 4-Zylinder-Druckmaschine mit waagerechter Papierführung und mit Druckformmagazinen;

Fig. 6

ein Druckformmagazin mit einer Fördereinrichtung für eine gebrauchte Druckform;

Fig. 7

ein Druckformmagazin mit einem Schrägaufzug zum Fördern einer neuen Druckform;

Fig. 8

eine Vorrichtung in einem Druckformmagazin zum Ausrichten einer neuen Druckform bezüglich eines Formzylinders;

Fig. 9

eine mit ihrem vorlaufenden Ende auf einem Formzylinder aufstehende Druckform während ihrer Montage;

Fig. 10

ein Druckformmagazin mit einer neuen, mit ihrer Druckseite auf einer Auflage aufliegenden Druckform;

Fig. 11

ein Druckformmagazin mit einer Fördereinrichtung für eine gebrauchte Druckform;

Fig. 12

eine Teilschnittdarstellung eines Druckformmagazins mit einem an eine Druckform angestellten Reibkörper;

Fig. 13

einen in einem Kanal geführten Reibkörper, wobei der Kanal mit Durchbrüchen versehen ist.

Show it:

Fig. 1

a perspective view of an elevator;

Fig. 2

a simplified sectional view of a holding device for a cylinder to be mounted on a lift;

Fig. 3

Elevators brought tangentially to a cylinder, to which a radial force acts during their assembly;

Fig. 4

elastically preloaded lifts when mounted on a cylinder;

Fig. 5

a 4-cylinder printing machine with horizontal paper guide and with printing forme magazines;

Fig. 6

a printing forme magazine with a conveyor for a used printing forme;

Fig. 7

a printing forme magazine with an inclined elevator for conveying a new printing form;

Fig. 8

a device in a printing forme magazine for aligning a new printing forme with respect to a forme cylinder;

Fig. 9

a with its leading end on a forme cylinder upstanding printing plate during its assembly;

Fig. 10

a printing forme magazine with a new, with its pressure side resting on a support printing form;

Fig. 11

a printing forme magazine with a conveyor for a used printing forme;

Fig. 12

a partial sectional view of a printing forme magazine with an attached to a printing form friction body;

Fig. 13

a guided in a channel friction body, wherein the channel is provided with openings.

An elevator 01 (Fig. 1), the z. B. as a plate-shaped printing plate 01 or as a one Blanket-carrying carrier plate is configured, has a substantially rectangular Surface with a length L and a width B, wherein the length L z. Eg measured values between 400 mm and 1300 mm and the width B z. B. Measurements between 280 mm and 1500 mm can assume. The surface has a support page, which follows Support surface 02 is called, with which the elevator 01 in the mounted state a lateral surface 07 of a cylinder 06 rests (FIG. 2). The back of the support surface 02 is a work surface which, in the case of the elevator 01 as a printing forme 01 is formed, provided with a printed image or at least with a printed image is foreseeable. The elevator 01 has two opposite ends 03; 04 preferably each with angled Einhänbringeln 13; 14, wherein the ends 03; 04 limit the bearing surface 02 and wherein the suspension legs 13; 14 each preferably completely or at least partially extend across the width B of the elevator 01. The bearing surface 02 of the elevator 01 is flexible at least along the length L and at an attachment of the elevator 01 on a lateral surface 07 of a cylinder 06 a Printing machine of the curvature of the cylinder 06 adaptable (Fig. 2). In the assembled Condition of the printing form, the length L of the support surface 02 thus extends in the direction of Circumference of the cylinder 06, whereas the width B of the support surface 02 in the axial Direction of the cylinder 06 extends. In practice, in particular, the measure for the Width B within certain, given tolerance limits, since the original Width B of the elevator 01 by a trim on at least one of the long sides of the Elevator 01 is reduced to z. B. the location of a printed image on the work surface of the Elevator 01 to a certain distance to at least one of the long sides of the Set elevator 01. The tolerance limits are z. In the range of Fractions of a millimeter to a few millimeters. Thus, the width B of a Elevator 01 from other similar elevators 01 used on the same cylinder 06 differ within the permissible tolerance limits.

As shown in Figure 2, the suspension legs 13; 14 of the elevator 01 means a holding device attached, wherein the holding device arranged in a channel 08 is, wherein the channel 08 i. d. R. extends in the axial direction of the cylinder 06. One with the production direction P of the cylinder 06 rectified end 03 of the elevator 01st is referred to as the leading end 03, whereas the opposite End 04 is the trailing end 04 of the elevator 01. At least the ends 03; 04 of the Elevator 01 with the suspension legs 13 formed thereon; 14 consist of one stare, z. B. metallic material, eg. B. of an aluminum alloy. Usually is the material thickness D of the elevator 01 (FIG. 1) or the material thickness D at least from the Einhänbringeln 13; 14 a few tenths of a millimeter, z. 0.2 mm to 0.4 mm, preferably 0.3 mm. Thus, the elevator 01 exists as a whole or at least its ends 03; 04 of a dimensionally stable material, so that the ends 03; 04 through a bend against a material-specific resistance are permanently deformable.

At least at one end 03; 04 of the elevator 01 (FIG. 1), but preferably at both Ends 03; 04 are along a bending edge 11; 12 each a folded suspension leg 13; 14 formed, wherein the suspension legs 13; 14 in a narrow, in particular slit-shaped opening 09 of the channel 08 of the cylinder 06 (FIG. 2) insertable and there are fastened by means of a holding device. For example, based on the length L of the non-arched, flat bearing surface 02 of the uninstalled elevator 01 at the end 03 a suspension leg 13 at the bending edge 11 to a Aperture angle α1 or at the end 04 a suspension leg 14 at the bending edge 12 bent by an opening angle β1 (Figure 1), wherein the opening angle α1; β1 i. d. R. lie between 30 ° and 140 °. If the opening angle α1 the leading End 03 of the elevator 01 is assigned, it is preferably executed acute-angled, in particular, it is 45 °. The opening angle β1 at the trailing end 04 of Elevator 01 is often preferably formed larger than 80 ° or obtuse, in particular, it is 85 ° or 135 °. The folded suspension leg 13 am leading end 03 has a length I13, which z. B. in the range of 4 mm to 30 mm, in particular between 4 mm and 15 mm. The folded suspension leg 14 at the trailing end 04 has a length I14, the z. B. 4 mm to 30 mm, in particular between 8 mm and 12 mm, with preference for the shorter length measure is to simplify the removal of the suspension legs 13; 14 from the To ensure opening 09 of the channel 08.

Fig. 2 shows a simplified sectional view of a cylinder 06 with a Lateral surface 07 and a channel 08, the lateral surface 07 a narrow, slit-shaped opening 09 having a slot width S, wherein the slot width S less than 5 mm and preferably in the range of 1 mm to 3 mm. The Opening 09 has in the production direction P of the cylinder 06 has a front edge 16 and a rear edge 17 on. Between which from the front edge 16 to the channel 08 back extending wall 18 and an imaginary, on the lateral surface 07 of the cylinder 06 resting on the opening 09 tangent T1 is an acute opening angle α2 formed, which is between 30 ° and 50 °, preferably 45 °. The folded one Suspension leg 13 at the leading end 03 of the elevator 01 is thus at this front edge 16 of the opening 09 preferably form-fitting suspended, because of Opening angle α1 at the leading end 03 of the elevator 01 preferably the Opening angle α2 is adjusted. The same applies to the trailing one End 04 of the elevator 01. Between which from the rear edge 17 to the channel 08 back extending wall 19 and an imaginary, on the lateral surface 07 of the cylinder 06 lying on the opening 09 tangent T1 is formed an opening angle β2, either between 80 ° and 95 °, preferably 90 °, or between 120 ° and 150 °, preferably 135 °. The folded suspension leg 14 am trailing end 04 of the elevator 01 is thus at this rear edge 17 of the opening 09 preferably positively suspended, because the opening angle β1 am trailing end 04 of the elevator 01 at least approximately the opening angle β2 is adjusted.

In the channel 08 are z. B. at least one preferably pivotally mounted retaining means 21st and a preferably biased spring element 22, wherein the Spring element 22, the holding means 21 z. B. against the folded suspension leg 14th at the trailing end 04 presses, at the opening 09 at its rear edge 17th is suspended, whereby the suspension leg 14 at the trailing end 04 at the is held by the rear edge 17 to the channel 08 extending wall 19. In order to release the pressure exerted by the holding means 21, an adjusting means 23 is provided in the channel 08 provided, which in its operation, the holding means 21 against the force of Spring element 22 pivots. The holding device therefore consists essentially of the holding means 21, the spring element 22 and the adjusting means 23. The holding means 21 is preferably operated remotely controlled by the adjusting means 23.

The exemplified cylinder 06 may be such that on his Outer surface 07 also several, preferably similar elevators 01 can be arranged. When the cylinder 06 is designed as a forme cylinder, it can in its axial Direction side by side z. B. with six plate-shaped printing plates 01 be assignable. It can also be provided that on the cylinder 06 in the direction of its circumference more as an elevator 01 is attachable. So z. B. two axially to the cylinder 06 extending Channels 08 may be provided with associated openings 09 on the circumference of the Cylinders 06 are arranged offset by 180 ° to each other. With this assignment of the Cylinder 06 with two along its circumference successively arranged elevators 01st the leading end 03 of the one elevator 01 is fixed in the one channel 08, whereas the trailing end 04 of the same elevator 01 in the other channel 08 is attached. For the or the other arranged on this cylinder 06 elevators 01 applies accordingly. Also, in the axial direction of the cylinder 06 side by side arranged elevators 01 may be arranged offset from each other, for. B. individually or in groups, each by half a length L of the elevator 01, which, however, requires that other channels 08 with associated openings 09 or at least with sections are introduced into the cylinder 06, along the circumference of the cylinder 06th to the two aforementioned channels 08 and openings 09 z. B. offset by 90 ° are arranged.

Hereinafter, a method of mounting a flexible elevator 01 on a Cylinder 06 described a printing press, wherein the elevator 01 based on the Production direction P of the cylinder 06 a leading end 03 and a trailing End 04 has (Fig. 3). At least at the leading end 03 of the elevator 01 is a Suspension leg 13 is formed, wherein this suspension leg 13 to the extended Length L of the elevator 01 with an opening angle α1 of at most 90 °, preferably 45 ° is folded. In the cylinder 06 are at least one preferably slot-shaped Opening 09 with a in the production direction P of the cylinder 06 first edge 16 and a second edge 17 is provided, wherein the edges 16; 17 in the axial direction of the cylinder 06 preferably parallel to each other. The method is characterized that the leading end 03 of the elevator 01 preferably by means of a preferably at the trailing end 04 of the elevator 01 attacking thrust the cylinder 06th preferably fed tangentially in the direction of production P and the Suspension leg 13 at the leading end 03 behind the second edge 17 of the opening 09 is made to the cylinder 06, so that the trained at the leading end 03 Suspension leg 13 during rotation of the cylinder 06 in the production direction P acting as a result of at least on the leading end 03, the cylinder 06th directed radial force FR engages in the opening 09 and at the first edge 16 through hooked there a preferably form-fitting application. The elevator 01 promoting Thrust is advantageously in the plane of the elevator 01 in the Mounting direction M acting force.

In the case that the elevator 01 is formed with its at the leading end 03 Suspension leg 13 on the lateral surface 07 of the cylinder 06 is based on it stands up, the radial force FR acting on the lateral surface 07 of the cylinder 06 Its weight FG be 01 elevator. In this case, it is advantageous to lift the elevator 01 horizontally preferably in its straight length L straight or at least without a directed to the cylinder 06 bending to the upper half of the lateral surface 07 of the Cylinders bring 06 and the suspension leg 13 at the leading end 03 of the Elevator 01 at a contact point 27 on the lateral surface 07 of the cylinder 06th to set up (Fig. 3). As soon as the suspension leg 13 and the opening 09 of the Cylinder 06 facing by a distance a09 between the opening 09 and the Touchpoint 27 is repealed, d. H. by a circumferential direction of the cylinder 06 directed relative movement between the opening 09 and the contact point 27 to Zero is reduced, the suspension leg 13 falls at the leading end 03 of the elevator 01 overwhelmingly, d. H. with a share of over 70% of the sum of all Suspension leg 13 attacking forces, due to its on the leading end 03rd acting weight force FG reliably into the opening 09 of the cylinder 06 without it a bias of the leading end 03 using the elasticity of the elevator 01 the elevator 01 or other aids such as a rolling element needs.

In addition to using the weight FG of the elevator 01 or alternatively it can the leading end 03 of the elevator 01 are elastically biased (FIG. 4), so that formed on the leading end 03 suspension leg 13 due to a on the Cylinder 06 directed return torque MR springs into the opening 09 as soon as the Opening 09 of the cylinder 06 and the contact line 27 of the Einhänlegeels 13 with the lateral surface 07 of the cylinder 06 due to a relative movement between the Elevator 01 and the cylinder 06, which in particular by the rotation of the cylinder 06 in Production direction P takes place, directly opposite.

The restoring moment MR therefore results in the elevator 01 being made of an elastic deformable material and thus immanently an elastically resilient property possesses, this property is used insofar as the leading end 03 of the Elevator 01 when approaching the cylinder 06 z. B. via a preferably axially to Cylinder 06 extending, spaced from the cylinder 06 edge 26 of a Supporting element 24 is guided and bent there in such a way that at the leading end End 03 of the elevator 01 a bending stress with a cylinder 06 directed Spring force builds up (dashed line of the elevator 01 in Fig. 4). At least until that via the edge 26 of the support member 24 guided leading end 03 of the elevator 01st gets up on the lateral surface 07 of the cylinder 06, the elevator 01 with his trailing end 04 supplied from a fixed to the cylinder 06 spatial direction. Of the Elevator 01 is therefore during the assembly process by the contact line 27th his attached at the leading end 03 Einhängeschenkels 13 with the Lateral surface 07 of the cylinder 06 and by its support on the edge 26 of the Supporting element 24 and by a positional fixing 28 of the trailing end 04th stabilized. The support member 24 may, for. B. be a rolling element 24, the z. B. to the Cylinder 06 is adjustable. In this case, the support member 24 is preferably close to Cylinder 06 arranged. However, it can also in addition to the support member 24 a another rolling element 47 or 62 (Fig. 6 or 9) may be provided later is received, wherein the support member 24 may then be arranged elsewhere can and can not be adjusted to the cylinder 06. The task of Support element 24 can then z. B. restrict it in the elevator 01 a To generate bending stress.

The leading end 03 of the elevator 01 can also against the cylinder 06th be introduced that this end 03 after its contact with the Lateral surface 07 of the cylinder 06 at an acute angle γ with an imaginary, in a contact point 29 resting on the lateral surface 07 of the cylinder 06 second tangent T2 of the lateral surface 07 of the cylinder 06 turns away (illustration the elevator 01 in Fig. 4 with a solid line). The thus performed bending of the leading end 03 of the elevator 01, however, should only be so strong that there attached suspension legs 13 still safe on the lateral surface 07 of the cylinder 06th is applied. To support the safe concern of Einhängebelt 13 at the Lateral surface 07 of the cylinder 06 may, for. B. the support member 24 to the elevator 01 be hired, whereby the elevator 01 with its leading end 03 close to the Lateral surface 07 of the cylinder 06 is held.

During a relative movement between the cylinder 06 and the elevator 01, preferably during the rotation of the cylinder 06 in its production direction P, but also just as well during a suitable movement of the elevator 01, z. B. contrary to the direction of production P of the cylinder 06, hooked hook 13 hooks on leading end 03 of the elevator 01 at the first edge 16 of the opening 09 a. One on The cylinder 06 employed rolling element 24 may be the mounting of the elevator 01 support the cylinder 06 by the rolling element 24 the elevator 01 on the Cylinder 06 rolls up. At the trailing end 04 of the elevator 01 is z. B. a Suspension leg 14 formed, wherein this suspension leg 14 from the rolling element 24 in the course of rolling up of the elevator 01 on the cylinder 06 in the opening 09 of the Cylinder 06 is pressed.

An apparatus for carrying out the aforementioned method will now be described by way of example an commercial web offset printing machine with z. B. a standing rubber-against-rubber printing in 4-cylinder design with horizontal guidance of a printing material 46, preferably a paper web 46 are explained (Fig. 5). In this example are Accordingly, in the printing unit, a first, arranged below the paper web 46 pair of rolling cylinders 31; 32 consisting of a form cylinder 31 and a blanket cylinder 32 and a second, above the paper web 46 arranged Pair of rolling cylinders 33; 34 consisting of a form cylinder 33rd and a blanket cylinder 34, wherein the paper web 46 between the two mutually employed blanket cylinders 32; 34 is passed. In the Printing machine are preferably several, z. For example, five or six bruises on each Side of the paper web 46 provided for different printing inks by in Running direction of the paper web 46 a plurality of printing units are arranged one behind the other. It can thus in particular more forme cylinder 31; 33 or even more whole Be provided for printing in four-color printing, so that on the not involved in the current production form cylinder 31; 33 or on one or more forme cylinders 31; 33 in the non-participating printing unit a change at least one printing plate 36; 37 can be made. Here is the question Shaped cylinder 31; 33 from its associated blanket cylinder 32; 34 turned off, d. H. the form cylinder 31; 33 stands with the associated blanket cylinder 32; 34 in none Touch contact, but both cylinders 31; 32; 33; 34 are z. B. by a swivel or Travel movement so far apart that the change of a printing form 36; 37 on the forme cylinder 31; 33 is possible without hindrance. Alternatively or additionally the blanket cylinder 32; 34, with the forme cylinder 31; 33 with the to be changed Printing plate 36; 37 cooperates, turned off the paper web 46, d. H. from the Be brought into contact. An entire printing unit can thereby in one of the ongoing production uninvolved operating state are offset by the Blanket cylinder 32; 34, between which the paper web 46 is guided, such be set off from each other, so that the paper web 46 without touching the Blanket cylinder 32; 34 can move between them.

In the following, for the sake of simplicity and without limitation of the invention thereof assumed that at least the forme cylinder 31; 33 in their dimensions and in theirs Type are the same. The form cylinder 31; 33 and the blanket cylinders 32; 34 are preferably assigned individual drives. When changing a printing plate 36; 37 is the Rotational speed of the relevant forme cylinder 31; 33 opposite the ones in production located form cylinders 31; 33 greatly reduced, so that the concerned Form cylinder 31; 33 only turns very slowly. The speed of the concerned Form cylinder 31; 33 can also be reduced to a standstill.

The forme cylinder 31 is provided with a printing plate 36 and the forme cylinder 33 with a Printing form 37 assignable, wherein the printing plates 36; 37 z. B. a the scope of Shaped cylinder 31; 33 corresponding length L and one of the length of the respective bale the form cylinder 31; 33 corresponding width B have. The can Printing plates 36; 37 based on their width B z. B. next to each other four or six Printed pages and based on their length L one behind the other two pages, so therefore have a total of eight or twelve printed pages. As already in Figs. 1 and 2 shown, the printing plates 36; 37 at their on the length L related front ends bevelled suspension legs 13; 14 on, with which the Printing plates 36; 37 on the respective form cylinder 31; 33 be attached by the Suspension leg 13; 14 in a in the lateral surface of the forme cylinder 31; 33 introduced, in the axial direction to the forme cylinder 31; 33 running slot-shaped Introduced opening 09 and there optionally with a in the forme cylinder 31; 33 are preferably held in a channel arranged holding device. At the leading end 03 of the printing plate 36; 37 is the opening angle α1 between the folded suspension legs 13 and the extended length L of the printing plate 36; 37 preferably 45 °. At the trailing end 04 of the printing plate 36; 37 is the Opening angle β1 between the folded suspension leg 14 and the straight length L of the printing plate 36; 37 preferably 90 °. The slot width S of in the form cylinder 31; 33 introduced opening 09 is preferably 1 mm to 3 mm.

In a preferred embodiment of the printing machine is provided that to the Form cylinders 31; 33 a change of one or more printing plates 36; 37 at running Paper web 46 remotely controlled by one of the printing machine associated control station can be made. In particular, one of a certain ink, z. B. Black associated printing form 36; 37 be interchangeable without printing as To have to stop the whole thing. To solve this problem z. B. for the form cylinder 31 a first, arranged below the paper web 46 printing forme magazine 38 and for the form cylinder 33 a second, above the paper web 46 arranged Printing forme magazine 39 is provided, each printing forme magazine 38; 39 each at least one shaft 41; 42 for receiving one of the respective form cylinder 31; 33 abzunehmenden, used printing plate 36; 37 and at least one shaft 43; 44 for receiving a on the respective form cylinder 31; 33 to be mounted, new printing plate 36; 37 has. While that the respective form cylinder 31; 33 associated printing form magazine 38; 39 z. B. by a pivoting movement of the respective form cylinder 31; 33 for changing a printing plate 36; 37 are employed z. B. the first forme cylinder 31 and the second forme cylinder 33 of their respective in Operative connection standing blanket cylinder 32; 34 turned off. It can, however, too alternatively or in addition to the forming cylinders 31; 33, the blanket cylinder 32; 34 of be turned off the paper web 46. In any case, when changing one or more Printing plates 36; 37, the relevant forme cylinder 31; 33 from the paper web 46 decoupled, while in the printing unit, the other pair of cylinders 32; 34 in production can remain.

In the printing form magazines 38; 39 are the shafts 41; 43 and 42, respectively; 44 for recording a used or new printing plate 36; 37 each advantageously parallel arranged to each other, d. H. they are in i. d. R. stacked on top of each other. there can z. B. a partition 84 in the respective printing forme magazine 38; 39 the shafts 41; 43 and 42, respectively; 44 separate from each other (Fig. 5). To even with the paper web 46 a good access to the shafts 41; 43 and 42, respectively; 44 to enable, for. B. for removal a used printing plate 36; 37 from the shafts 41; 42 or for provision a new printing plate 36; 37 in the shafts 43; 44, these shafts 41; 43 or 42; 44 with respect to the running direction of the paper web 46 from one to the paper web 46th parallel side of the printing form magazines 38; 39 accessible. The Printing form magazines 38; 39 each extend preferably over the length of Bouncing the form cylinder 31; 33, but at least over the width B of the printing plate 36; 37, and are capable in their respective wells 41; 43 and 42, respectively; 44, a printing plate 36; 37 preferably completely, d. H. their length L after record. The shafts 41; 43 or 42; 44 are preferably in a housing, wherein the housing has a Opening o38; o39, parallel to the bale of the respective forme cylinder 31; 33 alignable and by the one printing forme 36; 37, the forme cylinder 31; 33 feedable or from this into the shaft 41; 43 is insertable. For this purpose, the openings o38; o39 the printing form magazines 38; 39 based on the respective opening 09 in the Form cylinders 31; 33 at a much smaller distance a38; a39 to the form cylinder 31; 33 introduced as the length L of the printing plates 36; 37 is. Are advantageous Distances a38; a39 between 2% and at most 50% of the length L of the printing plates 36; 37, especially short distances a38; a39 to 10% of the length L. It is beneficial, at least the printing form magazine 39 arranged above the paper web 46 is movable to arrange so that it is preferably located above the printing unit Rest position to the forme cylinder 33 in a working position z. B. approached or can be pivoted. Due to the movable arrangement of Printing form magazines 38; 39 results in better accessibility to the printing z. B. to carry out the work required there, z. B. Maintenance work.

A movably arranged printing form magazine 38; 39 is in his working position a form cylinder 31; 33 at its distance a38; a39 and its orientation to Shaped cylinder 31; 33 fixed by a lock 83 (FIG. 5). The lock 83 can z. B. done by a taper bolt 83, the z. B. with respect to the forme cylinder 31; 33 is stationary and in an opening in the housing of the printing forme magazine 38; 39 intervenes and one to the forme cylinder 31; 33 z. B. pivoted-up printing plate magazine 38; 39 with its openings o38; o39 with respect to the bale of the forme cylinder 31; 33 centered. The taper bolt 83 is preferably designed such that during its engagement in the housing of the printing form magazine 38; 39 a self-locking effect is not occurs, but its chamfer only for positioning the printing forme magazine 38; 39 is being used. It is advantageous, the forme cylinder 31; 33 in one page predefined position relative to the printing form magazine 38; 39 to bring him to z. B. with respect of the page register before it is for an exchange of a printing plate 36; 37 between the forme cylinder 31; 33 and the printing form magazine 38; 39 is coming. alternative for adjusting the forme cylinder 31; 33 can also be the printing form magazine 38; 39 laterally relative to the forme cylinder 31; 33 are brought into a predefined position so that the Replacement of a printing plate 36; 37 between the printing form magazine 38; 39 and the Shaped cylinder 31; 33 can be targeted and without lateral displacement. The Printing form magazine 38; 39 can z. B. thereby relative to a predefined position laterally to the forme cylinder 31; 33 are brought by the printing form magazine 38; 39 laterally is made free of play, which can be done by the printing forme magazine 38; 39 preferably at least one to the forme cylinder 31; 33 directed front area in an axial to the forme cylinder 31; 33 extending gap is introduced, wherein the gap to the frame of the printing machine has fixed side boundaries.

Without limiting it to the invention, it is assumed below that the second, above the paper web 46 arranged, engageable on the forme cylinder 33 Printing form magazine 39 two shafts 42 arranged parallel one above the other; 44, namely a lower shaft 42 for receiving a printing plate 37 to be removed and an upper tray 44 for providing a new printing form 37. Both Shafts 42; 44 are spaced only slightly from each other in the printing forme magazine 39. It It is preferably provided that the printing forme 37 located in the one shaft 42 is located by a located in the other slot 44 printing form 37 thereof Printing form magazine 39 z. B. 30 to 40 mm apart, preferably less, whereby a very flat design of the printing forme magazine 39 is achieved, which is very is advantageous.

To remove a used printing forme 37, the printing forme magazine 39 becomes such pivoted in front of the forme cylinder 33 and fixed there, that at least the entrance area the shaft 42 for receiving the abzunehmenden printing forme 37 preferably is directed tangentially to the lateral surface of the forme cylinder 33. The form cylinder 33 is rotated so far until an imaginary, on the slot-shaped opening 09 of the Form cylinder 33 resting tangent T1 either with the shaft 42 for receiving the abzunehmenden printing form 37 is aligned or at least parallel to this shaft 42nd runs. As long as no means of the printing form magazine 39 on the printing plate 37 pushing or pulling, attacking alone, the rotating form cylinder 33 promotes the abzunehmende printing form 37 in the printing forme magazine 39. The entire process of Removing a used printing plate 37 from the forme cylinder 33 may as well as the Mounting a new provided printing plate 37 thereby advantageously by a preferably be controlled electrical central control, preferably of one of Pressing machine associated control center be remotely controlled.

Preferably at the beginning of the process for taking a used printing forme 37 from the forme cylinder 33 or at least as soon as the trailing end 04 of the printing forme 37 has reached the opening o39 of the printing forme magazine 39, in particular when the Blanket cylinder 34 is parked from the forme cylinder 33, in the production direction P of the Shaping cylinder 33 spaced from its opening 09 preferably a rolling element 47, which z. B. from several axially juxtaposed rollers can be made to the form cylinder 33, so that the printing plate 37 not far from her trailing end 04 is pressed against the forme cylinder 33. The holding device in the form of cylinder 33 are the trailing end 04 of the printing plate 37 free and this End 04 springs out of the opening 09 due to the elasticity of the printing forme 37. The leading end 03 of the printing plate 37 is still preferably at this time in a form-fitting manner on the front edge 16 in the production direction P of the forme cylinder 33 the opening 09 on.

Next, the forme cylinder 33 rotates counter to its direction of production P, until far the trailing end 04 of the printing plate 37 in the slot 42 for receiving the abzunehmenden printing form 37 introduced and there to a holding element 48th positively latched, preferably by a full-surface concerns of the folded Einhängeschenkels 14 on the holding element 48, wherein the holding element 48 z. As a Pawl 48 is formed (Fig. 6). The holding element 48, d. H. the pawl 48 hooks thus on the folded suspension leg 14 at the trailing end 04 of the printing plate 37 a. The holding member 48 is connected to a first, the shaft 42 for receiving the connected to the printing plate 37 associated conveyor 49, preferably arranged parallel to the shaft 42, z. B. pneumatic Linear drive, and pulls a hooked printing plate 37 into the slot 42.

In a preferred embodiment, the first conveyor 49 has a carriage 51 on, on which the holding element 48 z. B. is pivotally mounted by a hinge (Fig. 6). The forme cylinder 33 pushes against its during its rotation Production direction P the trailing end 04 of the printing plate 37 in the slot 42 for Recording the abzunehmenden printing form 37, wherein the bent at this end 04 Suspension leg 14 against a z. B. integrally formed on the carriage 51 or there attached stop 52 abuts. The stop 52 is positioned in the slot 42 in such a way that that by the impact of the trailing end 04 of the printing plate 37 on the stop 52, the leading end 03 of the printing plate 37 from the opening 09 in the forme cylinder 33 encountered becomes. The stop 52 is therefore initially of the opening 09 in the forme cylinder 33 in one Distance arranged that a to be removed from the forme cylinder 33 printing plate 37, just before her length L after completely removed from the forme cylinder 33, with their suspension leg 14 at the trailing end 04 abuts the stop 52 and at the front edge 16 of the opening 09 preferably by a positive connection and not held by a holding means 21 suspension leg 13 at the leading End 03 by a transmitted impulse and without using the elasticity of the leading end 03 from the opening 09 triggers. The positive concern of the Einhängebelt 13 is thus characterized by a short along the length L of the printing plate 37 acting jerk finished.

It can be provided that the holding element 48 at the trailing end 04 of Printing form 37 locked with the impact on the stop 52. The holding element 48 may, for. B. wedge-shaped and directed with the wedge tip to the opening of the shaft 42, so that the trailing end 04 of the printing plate 37 during the conveying movement through the form cylinder 33, the holding member 48 against acting on the printing plate 37 Force, z. B. the weight of the support member 48 or one with the support member 48 in Active connection standing spring force, first raises until the folded Suspension leg 14 engages behind the retaining element 48 at the trailing end 04, after which the retaining element 48 is lowered again into its starting position. It can be provided that the impact of the trailing end 04 of the printing plate 37 with the Stop 52 triggers a control signal with which the carriage 51 of the first Conveyor 49 is set in motion to the printing plate 37 completely in the Shaft 42 to promote. Thereafter, the used printing plate 37 is laterally from the shaft 42 removable. The removal can be facilitated by that preferably in Druckformmagazin 39 an ejector 86 is provided, the used printing forme 37th at least as far laterally conveyed out of the shaft 42 that the printing form 37 tangible is such that no handle in the shaft 42 is required.

In the meantime, the rolling element 47 employed against the forme cylinder 33 is again off Shaped cylinder 33 has been turned off, preferably immediately before the leading end 03 of the printing plate 37 is pushed out of the opening 09 in the forme cylinder 33. The Rolling element 47 was made such a force fit to the forme cylinder 33 that it during the rotation of the forme cylinder 33 assisted the conveying of the printing forme 37. The carriage 51 of the first conveyor 49 may, for. B. in the side Rails or be guided in ball bushings. It is advantageous, close to the forme cylinder 33 in front of the opening of the printing forme magazine 39 which can be directed onto the forme cylinder 33 articulated, preferably pivotable guide plate 53 to be arranged (Fig. 5), with the one from the opening 09 in the forme cylinder 33 released trailing end 04 of Printing form 37 targeted to the shaft 42 for receiving the abzunehmenden printing form 37 is headed. In particular, with the baffle 53 for one of the forme cylinder 33rd abzunehmende printing form 37 an erroneous access to the shaft 44 blocked in the a new printing form 37 can be provided.

To prepare for mounting a new printing plate 37 on the forme cylinder 33 is the printing form 37 to be mounted, preferably one during the printing process easily accessible page in the upper slot 44 of the printing forme magazine 39 inserted. Thereafter, the assembly of the new printing plate 37 on the forme cylinder 33, for this printing form 37 free, d. H. must be blank from one of the printing press associated electrical control, preferably a control center set in motion become. Preferably triggered by a control signal remote from the control station a second, the upper shaft 44 for providing the new printing form 37th associated conveyor 54 set in motion to the new printing form 37 from the shaft 44 of the printing forme magazine 39 in the direction of the forme cylinder 33rd to advance (Fig. 7). The second conveyor 54 may, for. B. a pneumatic Be linear actuator, in particular for a suspended in the shaft 44 arranged Printing form 37, as arranged in the above the paper web 46 Druckformmagazin 39 is the case, is advantageously designed as an inclined lift, which means that the second conveyor 54 a carriage 56 z. B. with a groove 57, in which the folded suspension leg 14 at the trailing end 04 of new printing form 37 preferably when inserting this printing form 37 in the slot 44 of the printing forme magazine 39 engages, wherein the carriage 56 when pushed out the printing form 37 from the shaft 44 but not moved parallel to the printing plate 37, but moving further and further away from the printing forme 37, so that the folded suspension legs 14 at the trailing end 04 of the new printing form 37th is released from the groove 57, while the carriage 56, the printing plate 37 from the Well 44 out. Thus, the second conveyor 54 with her Conveying direction to the printing plate 37 an opening angle of less than 30 °, preferably of 15 ° to 20 ° form. This selected opening angle is then fixed during conveying and not changeable. The conveying of the printing plate 37 can by a on the carriage 56th molded or attached there stop 58 are supported, the stop 58 sliding against the suspension leg 14 of the trailing end 04 of the new Printing form 37 acts.

By the second conveyor 54, the new printing plate 37 with its leading End 03 preferably pushed tangentially against the forme cylinder 33 until the on this leading end 03 beveled suspension leg on the lateral surface of the Form cylinder 33 stands up. During the conveyance out of the printing plate 37 from the Shaft 44 in its mounting direction M, the printing plate 37 by a slider 59th or by at least one laterally arranged in the shaft 44, hinged, in particular pivotable lever 59 against a slider 59 or lever 59th arranged opposite lying, in the shaft 44 fixed, one or more parts, undeformable, lateral stop 61 out, so that the printing plate 37 in their Mounting direction M and thus also defined in the axial direction to the forme cylinder 33 is aligned (Fig. 8). It can in the shaft 44 and more slides 59 or Lever 59 may be provided, which in particular in the case of printing plates 37 of great length L may be advantageous. Also, the forme cylinder 33 is advantageously Seitenregistermäßig brought into a predefined position by z. B. with respect to The page register is zeroed before the new printing plate 37 is applied to it. The Pivot axis of the lever 59 is preferably perpendicular to the support surface 02 of the printing form 37 arranged. The at least one lever 59 preferably engages laterally intermittently on the printing plate 37, wherein the employment of the lever 59 z. B. by an actuating means, in particular by a pneumatically operated actuating means preferably against the force a spring takes place. The lever 59 is advantageously pulse-like when employed deflected so that it gives the printing form 37 only a momentary acting thrust, but that the printing plate 37 otherwise z. B. unhindered in their mounting direction M. can be moved. Since the lever 59 acts only briefly on the printing plate 37, can if necessary, the printing forme 37 also be conveyed back into the shaft 44, without the lever 59, a movement of the printing forme 37 against her Mounting direction M would hinder. The slider 59 or lever 59 becomes the purpose the alignment of the printing plate 37 is preferably activated when the printing forme 37th is conveyed out of the shaft 44. Unless another stop 63 in Assembly direction M of the printing plate 37 is provided, the lever 59 can then Press the printing plate 37 laterally and align it in the axial direction to the forme cylinder 33, while the printing plate 37 is present at the further stop 63. With a preferably by a pneumatically actuated adjusting means laterally against a printing plate 37 with a within certain tolerance limits variable width B deflected lever 59 regardless of the actual width dimension of the printing plate 37 is always the the same amount of force is applied to the printing forme 37.

Even before the leading end 03 of the printing plate 37 reaches the forme cylinder 33 is a rolling element 62 is made to the forme cylinder 33 and a stop 63 close to the Form cylinder 33 introduced (Fig. 9). The rolling element 62 may consist of several in the axial Direction juxtaposed roles exist. The stop 63, the same consist of several axially juxtaposed segments can, is in the mounting direction M of the printing plate 37 in front of the rolling element 62 or next arranged the rolling element 62. The stop 63 has a forme cylinder 33 facing slope 64, the fictitious rectilinear extension of the lateral surface in an intersection C intersects. At the intersection C lies on the lateral surface of the Shaping cylinder 33 an imaginary third tangent T3, with the slope 64 and whose fictitious extension forms an acute angle δ in the direction of the Form cylinder 33 brought up printing form 37 is open. The stop 63 may, for. B. as a wedge, which is fixedly connected to a support for the rolling element 62. The leading end 03 of the new form of printing brought to the forme cylinder 33 37 abuts the bevels 64 of the stopper 63, whereby the printing forme 37 for Form cylinder 33 is aligned. The previously described orientation of the printing forme 37 with the levers 59 can also only at the end of the outward conveying of the printing forme 37th out of the shaft 44, when the leading end 03 of the printing plate 37 already abuts the stop 63.

The leading end 03 of the new form of printing brought to the forme cylinder 33 37 is supplied to the lateral surface of the forme cylinder 33 such that the am leading end 03 beveled suspension leg 13 pressed on the Lateral surface of the forme cylinder 33 rises. The opening angle α1 between the folded support legs 13 and the extended length L of the printing plate 37 can itself through the stop 63 on the leading end 03 of the printing plate 37 in Slightly reduce the pressure exerted on the direction of the forme cylinder 33. Since the with the Opening angle α1 of preferably 45 ° bent suspension legs 13 am leading end 03 a length 113 in the range of z. B. 4 mm to 11 mm, in particular 4 mm to 8 mm, preferably 6 mm, is the leading end 03 of the printing plate 37 close to the lateral surface of the forme cylinder 33 or close to a resting on the forme cylinder 33 in the contact point of Einhänlegeels 13 fourth tangent T4. The distance a37 is z. B. 2.5 mm to 6 mm. That in connection with the stopper 63 to the forme cylinder 33 employed rolling element 62 has a Radius r62 chosen slightly larger than the measure of distance a37. The radius r62 is z. B. in the range of 5 mm to 15 mm, preferably at 10 mm.

For mounting the printing forme 37 of the forme cylinder 33 is rotated so far that the am leading end 03 beveled suspension leg 13 of the printing plate 37 in Production direction P of the forme cylinder 33 at a distance a09 behind the rear Edge 16 of the opening 09 can be placed on the lateral surface of the forme cylinder 33, wherein the distance a09 is less than a bend of the length of a quarter, in particular one eighth of the circumference of the cylinder 06. Preferably, the distance a09 is significantly smaller than the length of the circumference of the rolling element 62. A preferred Execution provides that the suspension leg bent at the leading end 03 13 of the printing plate 37 at a distance a09 of 5 mm to 10 mm behind the opening 09 is set up.

While the forme cylinder 33 continues to rotate in its production direction P, hooked on the leading end 03 becked suspension legs 13 of the printing plate 37 supports by a radially directed to the forme cylinder 33 force FR in the opening 09 of the Form cylinder 33 a. The radially directed to the forme cylinder 33 force FR correlates with the pressure with which the leading end 03 of the printing plate 37 against the forme cylinder 33 is pressed. The pressure results from that exerted by the stopper 63 Contact pressure and can be reinforced by the weight FG of the printing form 37th or in that the leading end 03 of the printing plate 37 with a direction of action is resiliently biased against the forme cylinder 33.

Notwithstanding the described embodiment of the above Paper web 46 arranged printing form magazine 39 is located in the below the paper web 46 arranged printing form magazine 38, the printing plate 36 in the slot 43 for Provision of the new printing plate 36 at least partially, preferably between 30% and 50% of its length L, on a support 66 (FIG. 10), with the printing forme 36 in the Essentially by their own weight preferably frictionally engaged on the support 66th is held. Thus, it is not necessary to hold the printing plate 36 on the support 66th Use foreign energy, z. B. by a vacuum-loaded sucker, the Printing form 36 fixed on the support 66. The support 66 is by a third Conveyor 67 movable, which can be configured as a pneumatic linear actuator can and with the help of the new printing plate 36 with its leading end 03 against the gravity rising, preferably pushed tangentially to the forme cylinder 31 can be. For this purpose, the suspension leg 14 is located at the trailing end 04 of Printing plate 36 preferably in turn on a stop 58, which on the support 66th attached or molded. When the printing forme 36 against gravity the form cylinder 31 is conveyed, is a stop 63 corresponding means dispensable. The third conveyor 67 is therefore the same as the second Conveyor 54 preferably formed as a translational conveyor, which executes a travel path.

In the above the paper web 46 arranged printing forme magazine 39 have the Suspension leg 13; 14 of the printing plate 37 upwards and the printing plate 37 can in Shaft 44 be arranged hanging by the at the trailing end 04 of the Printing form 37 attached suspension legs 14 on the carriage 56 of the second Conveyor 54 is held (Fig. 7), while in below the paper web 46th arranged printing forme magazine 38 the suspension legs 13; 14 of the printing plate 36 after below, d. H. to rest 66 for the printing plate 36 have (Fig. 10).

In the arranged below the paper web 46 printing forme magazine 38 can in the Shaft 41 for receiving a male form 31 to be removed from the printing plate 36th according to the described embodiment for the above the paper web 46 arranged printing form magazine 39, a fourth conveyor 68 with a articulated, in particular pivotally mounted retaining element 69, in particular a Pawl be provided so that the retaining element 69 on the suspension leg 14 of trailing end 04 of a used printing plate 36, by the rotation of the Form cylinder 31 unwound and pushed into the slot 41, hooks and through preferably, the movement of the fourth conveyor 68 completely into the shaft 41 pulls (Figure 11).

It is advantageous in both printing forme magazines 38; 39 each in the shafts 43; 44 to provide a new printing plate 36; 37 at least one friction body 71; 72 provide, in particular during assembly of the new printing plate 36; 37 on the respective form cylinder 31; 33 at least then the new printing plate 36; 37 against one corresponding abutment 73; 74 presses (Fig. 12) as soon as the leading end 03 of the printing plate 36; 37 bent suspension legs 13 at the front edge 16 of Opening 09 of the forme cylinder 31; 33 hooked. The friction body 71; 72 and her Abutment 73; 74 are in the shafts 43; 44 preferably perpendicular to the conveying direction the printing plates 36; 37 arranged so that they by their on the printing plates 36; 37 exerted contact pressure the respective printing plate 36; 37 as with baking in defined Hold on way while the respective printing forme 36; 37 from the rotating form cylinder 31; 33 on the respective form cylinder 31; 33 is raised. By doing that the new one Printing plate 36; 37 against the friction body 71; 72 and abutment 73; 74 exercised Contact pressure on the respective form cylinder 31; 33 is raised, lies the Printing plate 36; 37 tightened on the forme cylinder 31; 33 on. Also is by ensures that the printing plate 36; 37 clearance at the front edge 16 of the opening 09 of the forme cylinder 31; 33 is present. Moreover, the friction body 71; 72 for that, too be used, a bending stress in the manner of the printing plate 36; 37 as previously described in connection with the support member 24. The friction body 71; 72 can thus the function of a brake or a holding means take and in particular at oblique to gravity to a forme cylinder 31; 33 employed shafts 43; 44 be important.

In a preferred embodiment, the friction body 71; 72 in the shafts 43; 44 like this arranged that the friction body 71; 72 against the provided with a printed page the printing plate 36; 37 acts. To damage the printing plate 36; 37 and hers Printed image by the friction body 71; 72 to avoid exercisable contact pressure, have the friction body 71; 72, a friction surface 76; 77 on, preferably smooth and from lower hardness than the surface of the printing plates 36; 37, the friction surface 76; 77 is facing. Advantageously, the friction bodies 71; 72 from a reversible deformable hollow body, z. B. from a with a pressure medium, z. B. compressed air fillable hose, wherein the hose made of an elastomer material, eg. B. from a Rubber is made. The abutments 73; 74 can z. B. as one or more in the Shafts 43; 44 mounted rails made of a plastic with a preferably be formed sliding surface. The friction body 71; 72 can also be up a z. In the shafts 43; 44, the printing plates 36; 37 conveying conveyor, z. B. the carriage-shaped support 66 and at least one of Printing plates 36; 37 if necessary. Thus, the friction body 71; 72 too against one in the shaft 43; 44 conveyed printing plate 36; 37 are employed.

Upon application of the preferably formed as a hollow body friction body 71; 72 with the pressure medium enlarge the hollow body their volume and practice on one adjacent printing plate 36; 37 a surface pressure, wherein the printing forme 36; 37 on the back of one of the preferably made of plastic abutment 73; 74 is supported. The intensity of surface pressure is due to the pressure medium preferably controllable. Since the elastomeric material of the friction body 71; 72 as well as the Plastic of the abutment 73; 74 have a lower hardness than those preferably made a metallic material, in particular consisting of an aluminum alloy Printing plates 36; 37, damage to the printing plates 36; 37 not to worry when the printing plates 36; 37 at existing surface pressure from the shaft 43; 44 to be pulled.

The friction body 71; 72 and their abutments 73; 74 are in the shafts 43; 44 preferably close to the respective openings of the wells 43; 44 arranged, d. H. near the point where one in the shafts 43; 44 for mounting on the forme cylinder 31; 33 provided new printing plate 36; 37, the respective printing form magazine 38; 39 leaves. The friction body 71; 72 and their abutments 73; 74 are z. In the shafts 43; 44 parallel to the width B of the printing plate 36; 37 arranged. The preferably as Hollow body formed friction body 71; 72 can z. B. in a bar 78 with a U-profile be stored, wherein the U-profile preferably on the printing forme 36; 37 facing side is open. That gives the hollow body laterally enclosing U-profile the hollow body stability and directed by an admission with a Pressure medium caused volume increase targeted against the printing plate 36; 37th

An embodiment of the consisting of a hollow body friction body 71; 72 provides (Fig. 13) that the hollow body in a across the width B of the printing plate 36; 37 extending channel 79 is guided and the channel 79 spaced from each other, to Printing plate 36; 37 directed breakthroughs 81; 82 has, for. B. in particular two Breakthroughs 81; 82, through which the hollow body when exposed to a Pressure medium a surface pressure on the printing plate 36; 37 exercise. If the Friction body 71; 72 than over the preferably entire width B of the printing plate 36; 37 extending hollow body are formed, it is ensured that at a Applying a uniform pressure to the hollow body with a pressure medium Surface pressure over the preferably entire width B of the printing plate 36; 37 results.

The surface pressure is by a venting, in particular a vacuum of the as Hollow body formed friction body 71; 72 released, causing the hollow body her Reduce volume before the trailing end 04 of the printing plate 36; 37 attached suspension legs 14 during the conveyance out of the printing plate 36; 37 from the shaft 43; 44 the point of surface pressure happens. The surface pressure This only works for a short time.

Furthermore, in the shafts 41 to 44 on the sides of the surface of the Printing plate 36; 37, further guide elements for a safe, especially slightly braked transport and for a largely backlash-free stop Printing plate 36; 37 may be provided. In particular brush arrangements are suitable for this, the sensitive surfaces of the printing plate 36; 37 do not damage.

For a simple and unhindered mobility of the printing forme magazines 38; 39, it is also advantageous, the printing form magazines 38; 39 perform such that at each printing form magazine 38; 39 only one connecting element is provided, which bundles all the necessary connecting lines to the Printing form magazine 38; 39 depending on the units installed in it with electrical or to supply other energy as well as to exchange control signals.

Alternatively to the described preferably pneumatic drives in the Conveyors 49, 54, 67 and 68 as well as other aggregates can be used for these Facilities and units also electric drives and an electrical control be provided.

LIST OF REFERENCE NUMBERS

01

Elevator, printing form

02

Bearing surface (01)

03

End, leading (01)

04

End, trailing (01)

05

-

06

cylinder

07

Lateral surface (06)

08

channel

09

Opening (08)

10

-

11

Bending edge (13)

12

Bending edge (14)

13

suspension leg

14

suspension leg

15

-

16

Edge, front, first (09)

17

Edge, rear, second (09)

18

wall

19

wall

20

-

21

holding means

22

spring element

23

actuating means

24

supporting; rolling

25

-

26

edge

27

Touch line, contact point

28

position fixing

29

point of contact

30

-

31

Cylinder, forme cylinder, first

32

Cylinder, blanket cylinder, first

33

Cylinder, forme cylinder, second

34

Cylinder, blanket cylinder, second

35

-

36

printing form

37

printing form

38

Printing forme magazine

39

Printing forme magazine

40

-

41

shaft

42

shaft

43

shaft

44

Shaft closed

45

-

46

Substrate, paper web

47

rolling

48

Holding member; pawl

49

Conveyor, first

50

-

51

carriage

52

attack

53

baffle

54

Conveyor, second

55

-

56

carriage

57

groove

58

attack

59

slide; lever

60

-

61

attack

62

rolling

63

attack

64

Slope of the stop (63)

65

-

66

edition

67

Conveyor, third

68

Conveyor, fourth

69

Holding member; pawl

70

-

71

friction body

72

friction body

73

abutment

74

abutment

75

-

76

Friction surface (71)

77

Friction surface (72)

78

strip

79

channel

80

-

81

Breakthrough (79)

82

Breakthrough (79)

83

detent; bowling pins

84

partition wall

85

-

86

ejector

FR

radial force

FG

weight force

MR

Restoring moment

B

width

C

intersection

D

material thickness

L

length

M

mounting direction

P

production direction

S

slot width

T1

Tangent, first

T2

Tangent, second

T3

Tangent, third

T4

Tangent, fourth

I13

length

I14

length

a09

distance

a37

distance

a38

distance

a39

distance

o38

opening

o39

opening

r62

radius

α1

opening angle

α2

opening angle

β1

opening angle

β2

opening angle

γ

opening angle

δ

angle

Claims (5)

Method for changing at least one printing forme (36, 37) on a forme cylinder (31, 33) of a printing press having a plurality of forme cylinders (31, 33) each with an associated transfer cylinder (32, 34), wherein the respective forme cylinder (31; 33) is separated from the associated transfer cylinder (32; 34) at the time of changing the printing form (36; 37), at least one shaft (41; 42; 43; 44) being brought from a rest position into a working position to the forme cylinder (31; 33) separated from its associated transfer cylinder (32; 34), wherein at least one conveying device (49, 68) for receiving a printing forme (36, 37) to be removed from the forme cylinder (31, 33) and to be conveyed into the shaft (41, 42) or a conveying device (54, 67) for feeding one in the Manhole (43; 44) provided printing plate (36; 37) to the forme cylinder (31; 33) is actuated, wherein the separation of the forme cylinder (31; 33) and transfer cylinder (32; 34), the bringing of the shaft (41; 42; 43; 44) to the forme cylinder (31; 33) and the actuation of the conveyor (49; 54; 67 68) is remotely controlled by a central controller associated with the printing press, characterized in that the change of at least one printing forme (36, 37) is carried out on at least one of the forme cylinders (31, 33) during ongoing production of the printing press, whereby the printing forme (36, 37) removed from the forme cylinder (31; the shaft (41, 42) is removed. A method according to claim 1, characterized in that the forme cylinder (31; 33) is aligned with the side of the slot (43; 44) with the provided printing forme (36; 37), the alignment of the forme cylinder (31; 33) being remotely controlled by the controller is made. Method according to claim 1, characterized in that after changing the printing forme (36; 37) the shaft (41; 42; 43; 44) is returned from its working position to its rest position, the return of the shaft (41; 42; 43 44) is remotely controlled by the controller. Method according to claim 1, characterized in that a printing forme (36; 37) to be conveyed to the forme cylinder (31; 33) is aligned to the forme cylinder (31; 33), the alignment of the printing forme to be conveyed to the forme cylinder (31; 33) (36; 37) is remotely controlled by the controller. Method according to Claim 1, characterized in that the printing forme (36; 37) is held on the forme cylinder (31; 33) by a holding means (21) which can be actuated remotely by the controller.

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