EP1946926B1 - Method for mounting and/or removing a covering - Google Patents

Abstract

The printing machine as at least one guiding element (710, 720) extending transversely in the transporting direction to guide a strip on a line with air-permeable micro-apertures. The guiding element associated to the single strip and inclined at 45 or 135 o to feed direction, and a folding cone (732) associated with the same strip, are provided with these micro-apertures in the area of interaction with the strip.

Description

The invention relates to a method for mounting and / or detaching a lift according to the preamble of claim 1.

By the EP 10 84 839 A1 a plate changing device is disclosed which comprises a pivotable magazine with a feed slot and a receiving shaft, a pivotable guide device and a pressure roller can be switched on or off. Each shaft has a carriage with a hook, by means of which the abzuplattende printing forme held in a one-sided positive connection and pulled into the slot, or is guided to the cylinder. The path of the printing form between the cylinder and the respective magazine shaft is determined by pivoting the guide device.

The EP 0 734 860 A1 discloses an apparatus and a method for mounting and / or detaching a lift with a storage device, which has a receiving slot for a lift to be removed from the cylinder and a supply shaft for a newly wound elevator and at least one transport means for conveying a lift in the storage device, wherein the Transport means is assigned to both shafts and has a receiving shaft and a supply shaft associated holding means.

The JP 2001047604 A shows a storage device and at least one optionally on and Abstellbare role having Andrückvorrichtung. By pivoting one of the storage unit associated role this can be adjusted to a lift.

The invention has for its object to provide a method for mounting and / or removing a lift.

The object is achieved by the features of claim 1.

An essential advantage achievable with the invention is that a quick and reliable system for mounting and / or removing a printing forme is created with the least possible outlay.

Due to the advantageous embodiment as a two-part system with a semi-automatic and a magazine, the degree of automation can be selected as needed.

By - in particular frictional or bilateral positive connection - the use of gravity without regard to both lower and upper printing units in the same version is free. Under both sides effective connection is here to understand a pressure and tensile load connection with respect to the conveying direction in the longitudinal direction of the shaft.

Compared to two slides with two drives, the use of only one moving carriage for the feed and receiving shaft reduces costs, maintenance and risk of failure.

A frictional connection between the holding means and printing form allows in contrast to the positive fit in a simple manner, the use of different formats printing without the need for readjustment and / or additional recesses, hooks, stops or the like would be required. Also, the rear end formed on the magazine in the manner of an open quiver is particularly advantageous with respect to different lengths of printing plates.

A arranged directly on the magazine movable flap for selecting the shaft and / or guide the printing forme in the receiving shaft reduces the effort compared to an otherwise possibly additionally provided device and at the same time always ensures a correct relative position between the magazine shaft and flap.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Fig. 1

eine Übersicht über eine Druckmaschine;

Fig. 2

eine schematische Darstellung von Bahnen unterschiedlicher Breite;

Fig. 3

eine Druckeinheit;

Fig. 4

eine erste Ausführung eines Halbautomaten mit zugeordnetem Magazin;

Fig. 5

eine verschwenkbare Ausführung des Halbautomaten;

Fig. 6

ein Längsschnitt durch das Magazin aus Fig. 4;

Fig. 7

schematische Darstellungen von Verfahrensschritten a bis p beim Auf- bzw. Abplatten;

Fig. 8

vereinfachte Darstellung einer Druckform in abgekanteter Form;

Fig. 9

eine schematische Darstellung einer Klemm- und/oder Spannvorrichtung.

Show it:

Fig. 1

an overview of a printing press;

Fig. 2

a schematic representation of webs of different widths;

Fig. 3

a printing unit;

Fig. 4

a first embodiment of a semi-automatic with associated magazine;

Fig. 5

a pivotable version of the semi-automatic machine;

Fig. 6

a longitudinal section through the magazine Fig. 4 ;

Fig. 7

schematic representations of process steps a to p during mounting or dismounting;

Fig. 8

simplified representation of a printing plate in beveled form;

Fig. 9

a schematic representation of a clamping and / or clamping device.

A printing press, in particular a web-fed rotary printing press for printing one or more webs B, has a plurality of assemblies 100; 200; 300; 400; 500; 600; 700; 800; 900 for supply, for printing and for further processing. From Z. B. a roll handling 100 to be duckled web B, in particular paper web B, unwound before it is fed via an infeed 200 one or more printing units 300. Additional printing units 300 can be provided for the printing units 300 (eg four pieces for four-color printing) provided by default for multi-color printing, which can then also be used, for example, alternately with one or more of the remaining printing units 300 for the flying printing form change.

In an advantageous embodiment, a coating unit 400 may be provided in the web path.

After printing and optionally painting, the web B passes through a dryer 500 and is optionally cooled again in a cooling unit 600, if the drying takes place in a thermal manner. After the dryer 500, in or after the cooling unit 600, at least one further, in Fig. 1 Not shown conditioning, such. B. a coating device and / or a Wiederbefeuchtung be provided. After cooling and / or conditioning, the web B can be fed via a superstructure 700 to a folding apparatus 800. The overbuilding 700 has at least one not in Fig. 1 illustrated silicone work, a longitudinal cutting and a turning device and a funnel unit. The said silicone work can also be before the superstructure 700, z. B. be arranged in the region of the cooling unit 600. The superstructure 700 may continue to be in Fig. 1 not shown Perforierwerk, a gluing unit, a numbering and / or a Pflugfalz have. After passing through the superstructure 700, the web B or partial webs are fed into a folding apparatus 800.

In an advantageous embodiment, the printing press additionally has a separate one Cross cutter 900, z. B. a so-called. Plano boom 900, in which a, for example, not guided by the folder 800 web B cut into format sheets and possibly stacked or designed.

The aggregates 100; 200; 300; 400; 500; 600; 700; 800; 900 of the printing press have an effective width transversely to the transport direction T of the web B, which processing of webs B of a maximum width b ( Fig. 2 ) from Z. B. up to 1,000 mm allowed. Under effective width here is the respective width or clear width of the directly or indirectly cooperating with the web B components (eg, roller, cylinder, implementation, sensors, travel paths, etc.) of the units 100; 200; 300; 400; 500; 600; 700; 800; 900 so that the web B can be processed, conditioned and conveyed in its full width b. Furthermore, the aggregates 100; 200; 300; 400; 500; 600; 700; 800; 900 in their functionality (material supply, rail transport, sensors, further processing) designed such that even partial width webs B 'in the printing press down to a width b' of only 400 mm are processed.

The aggregates 100 defining or processing a section length a; 200; 300; 400; 500; 600; 700; 800; 900 are configured to define, for example, a section length a lying between 540 and 700 mm on the path B. Advantageously, the section length a is between 540 and 630 mm. In a specific embodiment, the section length a is 620 ± 10 mm. In development of the printing press, the units 100; 200; 300; 400; 500; 600; 700; 800; 900 designed so that with a few changes, the printing machine with optional section length 546 mm, 578 mm, 590 mm or 620 mm is executable. Thus, for example, essentially only an interchangeability of bearing elements for printing cylinder (see below), an adjustment of the drive (see below) and an adjustment in the folder 800 and the cross cutter 900 (see below) required to equip the same printing press for different formats , The section length a is, for example, standard with four stationary printed pages, z. B.

DIN A4, in the transverse direction of the web B side by side and two printed pages (for example, a length s) in the longitudinal direction consecutively occupied. Depending on the printed image and subsequent further processing in the superstructure 700 and folder 800, however, other page numbers per section length a are possible.

For multicolor printing of web B; B 'the press has several, z. B. at least four, in particular five substantially equally equipped printing units 300. The printing units 300 are preferably arranged side by side and are of the web B; Go through B 'horizontally. The printing unit 300 is preferably used as a printing unit for offset printing, in particular as a double printing unit 300 or as an I-printing unit 300 with two printing units 301, z. B. two offset printing units 301 executed for the two-sided printing in the so-called. Rubber-against-rubber operation. At least one of the printing units 300 are at least in the lower region, and optionally in the upper region, upstream and downstream rollers 302, by means of which an incoming web B; B 'can be guided around the printing unit 300 at the bottom or at the top, a web B guided around an upstream printing unit 300; B 'can be carried out by the printing unit 300, or a web B performed by the printing unit 300; B 'is guided around the downstream printing unit 300.

Fig. 3 shows schematically the arrangement of two over the web B; B 'co-operating printing units 301, each with a cylinder 303 designed as a transfer cylinder 303 and as a forme cylinder 304; 304, an inking unit 305 and a dampening unit 306. In an advantageous embodiment, the printing unit 300 per form cylinder 304 via devices for semi or fully automatic plate feeder 401 or change a printing plate 405, z. B. a pressure plate 405 (see below to Fig. 4 et seq.).

In a further development, in particular if the printing machine is to be suitable for an imprinting operation, at least one or more printing units 300 have additional guide elements 308 close to and behind the nip point of the printing unit 300. Should one Printing unit 300 without printing and without contact between web B; B 'and transfer cylinders 303 are passed through, the dashed line is in Fig. 3 illustrated web guide using the guide elements 308 advantageous. The web B; B 'passes through the nip so that it is at an angle of 80 ° to 100 °, z. B. forms about 90 °. The guide elements 308 are preferably designed as luftumspülte rods or rollers. This reduces the risk of abrasion of previously freshly printed paint.

In a further development of the illustrated printing unit 301, each transfer cylinder 303 is assigned a washing device 434. By means of the washing device 434, the elastic surface of the transfer cylinder 303 can be cleaned.

The cylinders 303; 304 each have a circumference between 540 and 700 mm, preferably transfer and form cylinder 303; 304 have the same extent. Advantageously, the circumferences are between 540 and 630 mm. In a specific embodiment, the section length a is 620 ± 10 mm. In a further development, the printing unit 300 is designed in such a way that, with a few changes, cylinders 303; 304 with a circumference of 546 mm, 578 mm, 590 mm or 620 mm is executable. Thus, for example, only an exchange of bearing elements 308 or a changed position of the holes in the side frame (and sprue; s.u.) For the cylinder 303; 304 and an adjustment of the drive (lever, s.u).

The inking unit 305 has in addition to a color feeder, z. B. a color box 311 with a regulator 312 for regulating the flow of color, a plurality of rollers 313 to 325 on. The ink feed can also be designed as a doctor bar. The ink passes in juxtaposed rollers 313 to 325 from the ink fountain 311 on the ductor roller 313, the film roller 314 and a first ink roller 315 on a first distribution cylinder 316. From there, the color passes depending on the operation of the inking unit 306th (see below), via at least one ink roller 317 to 320 on at least one further distribution cylinder 321; 324 and from there via at least one application roller 322; 323; 325 on the surface of the forme cylinder 304. In an advantageous embodiment, the color passes from the first distribution cylinder 316 via different possible ways either selectively or simultaneously (in series or in parallel) via two further distribution cylinder 321; 324 to the applicator rollers 322; 323; 325. In an advantageous embodiment of the inking and dampening unit 305; 306, the second distribution cylinder 324 may simultaneously with a roller 328, z. B. applicator roller 328, the dampening unit 306 act together.

The roller 328 acts with another roller 329 of the dampening unit 306, z. B. a friction roller 329, in particular a iridescent chrome roller 329 together. The chrome roller 329 receives the dampening solution from a moistening device, for. B. a roller 330, in particular a fountain roller 330, which in a dampening solution supply 332, z. B. a water tank, diving. Under the water tank a drip tray 335 is preferably arranged for collecting condensation forming on the water box, which can be heated in an advantageous embodiment, for. B. by means of heating coil is executed.

In a further development, the inking unit 305 has, in addition to the rollers 313 to 325, at least one further roller 326, by means of which ink in the ink path, in particular in front of the first distribution cylinder 316, can be removed from the inking unit 305. This takes place by means of this roller 326 itself, or, as shown, on a roller 327 cooperating with this roller, a corresponding removal device 333 (FIG. Fig. 3 ).

In an advantageous development, the printing unit 300 has in its input area or in the region of its input gusset between the two transfer cylinders 303 a device for influencing the fan-out effect 336, ie for influencing a change caused, for example, by the printing process (in particular the moisture) the transverse extent / width of the web B; B 'from point of pressure to point of pressure.

The device 336 is preferably arranged in the entry area of a printing unit 300 following a first printing unit 300, i. H. if the train B; B 'has already been printed at least once. It has at least actuator, z. B. a support element, by means of which under contact with the web B; B 'or advantageous contactless same can be deflected in a direction perpendicular to the web plane.

As in Fig. 3 indicated, the printing unit 301 in an advantageous embodiment each have a device 401 for - at least partially automated - change a printing forme 405 on the associated form cylinder 304. The device 401 is designed in two parts and has one in the region of a Nippstelle between transfer and forme cylinder 303; 304 arranged pressing device 402, also called "semi-automatic change" or "semiautomatic" 402, and a structurally separate storage device 403, z. B. a magazine 403, with feeding and receiving means for the printing plates 405 on ( Fig. 4 et seq.).

The printing form 405 is sufficient - regardless of the presence of a device 401 to support the printing form change substantially over the entire width of the web B to be printed; B 'and substantially (except for a shock or a channel opening) around the entire circumference of the forme cylinder 304 and is dimensioned accordingly. Accordingly, if present, also semi-automatic feeder 402 and magazine 403 in the axial extent for receiving printing plates 405 with a width of a total to be printed web B; B 'dimensioned.

The printing unit 301 has at least one semi-automatic change machine 402. For this purpose, in a first embodiment for the semi-automatic feeder 402 ( Fig. 4 ) on a frame-fixed crossbar 404 a roller 406 movable, z. B. arranged resiliently, which by means of a drive 407 (actuating means 407), z. B. a pressurizable hollow body (hose) 407, in the direction of lateral surface of the cylinder 304 adjustable (eg. against the spring force) or can be turned off (eg when unloading). In addition, a likewise on or offable protection 408 mounted on the crossbar 404 about a pivot point D408, and by means of a drive 409, z. B. an acted upon by pressure medium hollow body (hose) 409 in the direction of the lateral surface of the cylinder 304 can be adjusted (eg., Against the spring force) or Abstellbar (eg, when discharge) his. As in Fig. 5 To recognize axially next to each other a plurality (here 10) of rollers 406 individually to respective spring elements 430, in particular spring plates 430, stored. Preferably, these are all together or in groups by a common drive 407 actuated.

In a second embodiment of the semiautomatic machine 402 ( Fig. 5 ) is the change semiautomatic 402 and the roller 406 having crossbar 404 not fixed to the frame, but about a rotational axis of the roller 406 spaced but substantially parallel to the axis of rotation of the forme cylinder 304 pivot axis S402 pivotally mounted in the frame. For the pivoting movement is a drive 431, z. B. a beauchlagbarer with pressure medium cylinder 431 is provided, which is articulated, for example, at one end on the side frame not shown and at the other end of the semi-automatic 402 (eg., On the crossbar 404 or connected to this lever arm) eccentrically to the pivot axis S402. The pivotable crossbar 404 or the semiautomatic 402 can directly on the side frame or as in Fig. 5 represented by a correspondingly connected to the side frame support 432 to be pivotally mounted. The holder 432 may advantageously be adjustably mounted on the side frame or on the side frame arranged bearing block 435 in a direction perpendicular to the pivot axis S402.

The arrival or Abstellbewegung the roller 406 may in the manner of the first embodiment by means of a drive 407, z. As the acted upon by pressure medium hollow body 407, and spring force, possibly also in a version with additional protection 408th

In an alternative solution, the pivot axis S402 is selected so that the fixed, but possibly sprung mounted, roller 406 by turning the crossbar 404 alone on or off. An additional drive of the roller 406 (drive 407) can then be omitted.

In principle, a printing plate 405 can be semi-automatically mounted on the described semiautomatic machine 402-in the first or second embodiment. For this purpose, in the first embodiment, for example, by hand a aufziehende printing form 405 is inserted into the space between roller 406 and forme cylinder 304 and remains there initially loosely clamped. Subsequently, the roller 406 is turned on and the cylinder 304 (here in the clockwise direction) is rotated. The leading edge of the printing forme 405 (for example, bent by 40 ° to 50 °, in particular by an intermediate angle α of about 45 °, see Fig. 8 ) jumps into an opening 411 (see Fig. 4 and 9 ) of a form cylinder 304 axially over at least the usable width extending clamping and / or clamping channel; the printing plate 405 is wound around it by rotating the cylinder 304 until the trailing edge, in particular bent by an intermediate angle β of approximately 90 °, is also pressed by the roller 406 into the channel. Thereafter, an optionally present, symbolically indicated locking, clamping and / or clamping device 410 is actuated (closer to the clamping and / or clamping device 410, see Fig. 9 ). A Abplatten is carried out in accordance with in reverse order, the pushed-out printing plate 405 can be removed manually from the space between roller 406 and cylinder 304. The opening 411 to the channel, in the region of the lateral surface in the circumferential direction of the cylinder 304, preferably has a width of 1 to 5 mm, in particular less than or equal to 3 mm. The clamping device 410 is advantageously pneumatically actuated, for example as one or more pneumatically actuatable levers 442, which in the closed state are prestressed by means of spring force (spring 443) against the trailing end 441 (for example approximately 90 ° folded into the channel) , executed. As actuating means 444, a hose 444 which can be acted upon with pressure medium can preferably be used ( Fig. 9 ). The tube 444 is supplied via a feed 445 with pressure medium. One cooperating with the leading end 439 Channel wall forms with the lateral surface a nose-like shape of an intermediate angle α ', which substantially corresponds to that of the fold of the leading end 439. The same applies to the intermediate angle β 'in the region of the opposite wall and the angle β of approximately 90 ° of the bent trailing end 441.

For the second embodiment of the semi-automatic 402, the up or down plates in principle in the same steps, but in the slab at the time in which the leading end 439 is to jump out of the channel of the clamping device 410, the semi-automatic 402 in the meantime from its normal position in the farther from the cylinder 304 remote end position is brought.

In a preferred embodiment, however, the supply and removal of the printing forme 405 is carried out automatically by the magazine 403, which is structurally separate from the semi-automatic feeder 402. The second embodiment of the semiautomatic machine 402 is preferably i. V. m. used the second embodiment of the magazine 403 described below. For the first embodiment of the semi-automatic machine 402, the first embodiment of the magazine 403 is advantageous. As in Fig. 4 to recognize the magazine 403 is pivotally mounted about a pivot point D403 respect. Of the side frame.

In a first embodiment of the magazine 403, a roller 412 is pivotable about a pivot axis extending parallel to the cylinder axis, and mounted drivable on the magazine 403 by a drive 413. The roller 412 is used when applying a new printing plate 405 a bending of the printing plate 405 in such a way that a bias of the leading end 439 results against the lateral surface of the cylinder 304.

In a second embodiment of the magazine 403, however, this above-mentioned roller 412 and the drive 413 do not have (not explicitly shown). That's why the magazine is 403 according to the first embodiment with roller 412 and drive 413, the following description, apart from the roller 412 and the drive 413, being applicable to both the first and second embodiments.

On one of the nip of the two cylinders 303; 304 facing side, a flap 414 in the magazine 403 is movable, for. B. pivotable about a cylinder axis parallel to the pivot axis, stored and advantageously by a drive 416, z. B. a pressurizable cylinder, driven. The flap 41 serves to open or close a in Fig. 6 recognizable shaft 417, z. B. supply shaft 417 for newly aufzulegende printing plates 405. When the feed slot 417 closed the way for a newly wound up printing form 405 to Nippstelle out and blocked the way for a printing form to be accepted 405 - in the first embodiment of the roller 412 over - into a slot 418, z. B. receiving shaft 418 free (in Fig. 6 both positions indicated). In the interior of the magazine 403 is for transporting the printing plates 405, a means of transport 419, z. B. a carriage 419, in the longitudinal direction of the wells 417; 418 arranged movably. It has a holding means 421, z. B. a clamping device 421 on a cooperating with the newly aufzulegende printing plates 405 side and a holding means 422, z. B. a clamping device 422 on a cooperating with the abzunehmenden printing plates 405 side. The carriage 419 is here in one piece (possibly consisting of several connected pieces), both shafts 417; 418 operated executed, wherein at least one slot 418 of the carriage 419, forming a passage or passage opening 425 for the detached printing forme 405, is encompassed. Preferably, both wells 417; 418 encompassed by the carriage 419, wherein on a shaft side, the respective clamping device 421; 422 is provided and the opposite side of the slide passage serves as an abutment. The clamping device 421; 422 are designed, for example, as hollow bodies or cylinders which can be actuated with pressure medium and which are either actively clamping or self-locking (eg working against a spring mechanism).

Preferably, in the region of the flap 414, a push-button 420 is arranged such that it registers a position of a new pressure plate 405 in the shaft 417 with the flap 414 closed and thus ensures a correct position. The button 420 is preferably designed as an inductive button 420.

The clamping devices 421; 422 and optionally brushes 423 carrying carriage 419 is driven by a drive 424, z. B. an electric motor 424 driven. This is done, for example, via a belt drive 426. In principle, the carriage 419 can also be driven by a drive 424 designed as a cylinder which can be actuated with pressure medium. A rear, remote from the cylinder 304 end portion 427 is, at least in the region of the wells 417 and 418, preferably designed to be open. Despite the identical design of the magazine, 403 printing forms can be handled in 405 different formats for different format printing presses. In the end region 427 can advantageously per slot 417; 418 one or more further holding means 428; 429, z. B. clamps 428; 429, which hold the respective printing forme 405 in a designated storage position (before the top plates or after the top plates) in the magazine 403. At least for one of the shafts 417; 418, in particular the receiving shaft 418, such a, with respect to the storage device 403 frame-fixed holding means 428 should be assigned. The clamping devices 428; 429 are arranged fixed to the frame on the magazine 403, while the o. G. Clamping devices 421; 422 associated with the movable carriage 419 and connected thereto.

The holding means 421; 422; 428; 429 may also be embodied in a manner other than illustrated, but preferably all but at least the holding means 421 associated with the carriage 419; 422 are designed as compounds effective on both sides. This may optionally be in addition to the illustrated frictional connection also a double-acting positive connection. Under both sides effective connection is here to understand a pressure and tensile load connection with respect to the conveying direction in the longitudinal direction of the shaft.

In the following Fig. 7a to 7p are schematically illustrated the processes or process steps in the magazine 403 at Ab- or on plates. The reference numerals have been used for clarity only in the first figures. In the representations of the Fig. 7 are the wells 417 and 418 with associated clamping means 421; 422; 428; 429 by way of example with respect to the illustration in FIG Fig. 6 reversed. In principle, although the shaft 417 can always be at the top and the shaft 418 can always be at the bottom or vice versa, it is expedient for the feed shaft 417 to be located on the path B; B 'closer side of the magazine 403 is arranged so that in an upper printing unit 301 of the feed chute 417 below, and at a lower printing unit 301 of the feed chute 417 is disposed above.

Fig. 7a shows the magazine 403 in the starting position, ie there is no printing forme 405 in one of the shafts 417; 418, the clamps 421; 422; 428; 429 are turned off, ie they give the respective slot 417; 418 free and are z. B. in a rest position. Furthermore, the flap 414 is in a position in which the feed chute 417 is closed, and the receiving shaft 418 is opened. The carriage 419 is in a rear position, its rest position. A printing form 405 is now inserted into the feed chute 417 ( Fig. 7b ) until it comes to lie, for example, on a stop 415 and is then secured by the frame-fixed clamping device 429 ( Fig. 7c ). The saving can be carried out automatically and / or under the condition that a probe 420 which detects the leading edge (for example in the region of the stop 415, but only in FIG Fig. 7d shown) registers the correctly positioned new printing plate 405. The magazine 403 is now ready for any subsequent subsequent Aufplatten on an "empty" cylinder 304, which with the clamping of the new printing plate 405 after Fig. 7i (but without loosening an old printing plate from the carriage 419) would continue.

However, if a plate change is to be performed or only an old printing plate 405 are removed, then the steps according to Fig. 7d including 7h, possibly with the step of releasing the old pressure plate 405 from the carriage 419 Fig. 7i , required.

Not in Fig. 7d is shown that for the first plate in the Fig. 4 and 5 shown roller 406 is made by the drive 407 to the still on the cylinder 304 located pressure plate 405, and then the possibly existing lock, clamping device or tensioning device 410 is released for the trailing end of the pressure plate 405 so that the end when turning the cylinder 304 can escape from the channel in reverse direction for production. By rotating the cylinder 304 now releases the pressure plate 405, guided by the roller 406 or pressed in this point still on the lateral surface, gradually by their residual stress from the cylinder 304 and is replaced by the rotation of the cylinder 304 in the slot 418th pushed ( Fig. 7d ). The two clamping devices 422 assigned to the shaft 418; 428 are inactive.

The carriage 419 is either already in a cylinder near position or is as in Fig. 7e compared to Fig. 7d shown moved there. In a phase in which the printing plate 405 is largely unwound and the leading end 439 is almost or already under the roller 406, the roller 406 is turned off by the cylinder 304, so that after releasing the clamping device 410 and further rotating the cylinder 304 leading end 439 can jump out of the channel.

In order to facilitate a release of the leading end 439 of the pressure plate 405 from the channel of the locking, clamping device or clamping device 410, in addition to stopping the roller 406 in an advantageous procedure in the final phase of unwinding the pressure plate 405 in the first variant by pivoting the roller 412 according to Fig. 4 bent in a suitable manner. So learns the leading end 439 over the deflection of the pressure plate 405 torque in order to escape more easily upon further rotation of the cylinder 304 from the channel can. Bending can be as exemplary in Fig. 7f shown also done with a changeover of the flap 414, which can then be dispensed with a specially provided role 412 and the drive 413.

In another variant, in accordance with Fig. 5 pivotable semi-automatic 404 moves into a position that the previously parked previously roller 406 (drive 407 disabled) even further away from the cylinder 304. Thus, the leading end 439 receives sufficient clearance to more easily escape from the channel upon further rotation of the cylinder 304.

Now, if the leading end 439 of the pressure plate 405 removed from the channel of the lock, the pressure plate 405 can not be carried by rotating the cylinder 304. As in Fig. 7f 2, the printing plate 406 to be cut off is clamped by the clamping device 422 of the carriage 419 located in the front position and is now completely drawn into the receiving shaft 418 of the magazine 403 by moving the carriage 419 into a rear position ( Fig. 7g ).

The roller 412 from one variant or the pivotable semi-automatic 402 from the other variant can be returned to its normal position after triggering the leading edge of the plate from the channel of the lock.

With the subsequent clamping of the pressure plate 405 by the frame-fixed clamping device 428 this is secured in the receiving shaft 418 in a parking position until removal by the operator or a device provided for this purpose ( Fig. 7h ) then as in Fig. 7i recognizable, the carriage 419 associated clamping device 422 are released. Thus, the process of flattening an "old" pressure plate 405, apart from removal from the chute 418, completed. To remove the old pressure plate 405 at this time or later, only the clamping device 428 has to be released and the pressure plate 405 has to be removed through the preferably open rear end of the magazine 403.

In the case of Aufplattens as part of a plate change or the use of a new printing plate 405 at the beginning of production, close to the above steps Fig.7a to c follow the steps described below. By means of the carriage 419 in the region of the feed chute 417 associated clamping device 421, the new pressure plate 405 is clamped on the located in a rear position slide 419 ( Fig. 7i , second part) and then the clamping by the frame-fixed clamping device 429 solved ( Fig. 7k ). If the flap 414 is still in the closed position for the feed chute 417, this is opened by actuating the drive 416. By moving the carriage 419 to a front position, the new pressure plate 405 is now fed out of the shaft 417 to the cylinder 304 ( Fig. 7I ). The roller 406 is turned on by activation of the drive 407 to the cylinder 304 before the pressure plate 405 reaches its lateral surface. The roller 406 serves the leading end 439 of the printing plate 405 as a stop, wherein it rotates by friction with the now in the production direction rotating cylinder 304 in such a way that the leading end 439 experiences a friction in the direction of the cylinder surface by friction on the roller surface. If the channel of the clamping and / or tensioning device 410 passes through the cylinder 304 under the leading end 439 of the struck on the roller 406 pressure plate 405, this is - supported by the roller 406 and its rotational movement is pressed into the channel. Preferably, the pressure plate 405 is not released by the clamping device 421 of the magazine 403 immediately after locking of the leading end 439, but is, as Fig. 7m shows, still held by the clamping device 421 until it is partially raised.

While the pressure plate 405 is further wound up by rotating the cylinder 304, the clamping is released by the clamping device 421 (FIG. Fig. 7n ). The role 406 remains for the entire process of winding the pressure plate 405 employed on this and finally presses the trailing end 441 in the channel. After locking in the channel, the roller 406 is turned off. ie deactivated the pressure medium. After releasing the clamping device 421 of the magazine 403, the carriage 419 is preferably moved back into its rest position, ie in a rear position Fig. 7o , As already mentioned above, in the event of a plate change, after loosening the clamping device 428, the old pressure plate 405 can now be removed Fig. 7p , Both shafts 417; 418 are now empty, the carriage 419 is in its initial position. For this purpose, if necessary, the flap 414 is still brought into the position in which the receiving shaft 418 is opened for a printing plate to be ripped off 405.

The transfer cylinder 303 has on its circumference at least one in Fig. 4 indicated elevator 436, which is held in at least one axially extending on the lateral surface channel. Preferably, the transfer cylinder 303 has only one over the effective length or substantially over the entire width of the web B to be printed; B 'reaching and substantially (except for a shock or a channel opening) to the entire circumference of the transfer cylinder 303 reaching elevator 436 on. The elevator 436 is preferably embodied as a so-called metal printing blanket 436, which has an elastic layer (eg rubber) on a substantially dimensionally stable carrier layer, e.g. B. a thin metal plate having. The ends of this elevator 436 are now introduced through an opening 437 on the lateral surface in the channel and held there frictionally or positively. In the case of a metal printing blanket 436, the ends are bent / folded (for example in the region of its leading end by approximately 45 ° and in the region of its trailing end by approximately 135 ° or by an intermediate angle of 45 °). These ends extend through the opening 437 of an axially over the entire width to be used of the transfer cylinder 303 reaching channel, which, for example, also a detent 438, clamping and / or clamping device 438, in particular a substantially that of the forme cylinder 304 in Fig. 9 according to shown clamping device 410 has.

Because of this, are in Fig. 9 the reference numerals of the forme cylinder 304, the corresponding of the transfer cylinder 303 added. The printing form 410 corresponds in the illustration of 8 and 9 however, for example, the dimensionally stable carrier layer of the lift 436 designed as a metal blanket 436, wherein an elastic layer on the effective outer surface in Fig. 9 but not shown. The opening 437 to the channel has in the region of the lateral surface in the circumferential direction of the cylinder 304 preferably has a width of 1 to 5 mm, in particular less than or equal to 3 mm. The clamping device 438 is advantageously pneumatically actuated, for. B. as one or more pneumatically actuated lever 442, which are biased in the closed state by spring force against the reaching into the channel trailing end executed. As actuating means 444, a hose 444 which can be acted upon with pressure medium can preferably be used.

The transfer cylinder 303 preferably carries a single lift 436 configured as a blanket 436, which, regardless of the presence of a washing device 434 or the special embodiment of a clamping device 438, substantially over the entire width of the web B to be printed; B 'and extends substantially (except for a shock or a channel opening) to the entire circumference of the transfer cylinder 303, and which is dimensioned accordingly.

LIST OF REFERENCE NUMBERS

100

Aggregate, roll handling

200

Aggregate, intake mechanism

300

Unit, printing unit, double printing unit, I-unit

301

Printing unit, offset printing unit

302

roller

303

Cylinder, transfer cylinder

304

Cylinder, forme cylinder

305

inking

306

dampening

307

-

308

vane

309

-

310

-

311

paintbox

312

locking device

313

Roller, ductor roller

314

Roller, film roller

315

Roller, ink roller

316

Roller, distribution cylinder

317

Roller, ink roller

318

Roller, ink roller

319

Roller, ink roller

320

Roller, ink roller

321

Roller, distribution cylinder

322

Roller, applicator roller

323

Roller, applicator roller

324

Roller, distribution cylinder

325

Roller, applicator roller

326

roller

327

roller

328

Roller, applicator roller

329

Roller, rubbing roller, chrome roller

330

Roller, diver roller

331

-

332

Dampening solution supply

333

removal device

334

-

335

drip tray

336

Device for influencing the fan-out effect

400

Aggregate, coating unit

401

Device for semi or fully automatic plate guide

402

Pressing device, semi-automatic, semi-automatic

403

Storage device, magazine

404

traverse

405

Printing form, printing plate

406

role

407

Drive, actuating means, hollow body, hose

408

protection

409

Drive, hollow body, hose

410

Clamping and / or clamping device

411

opening

412

role

413

drive

414

flap

415

attack

416

drive

417

Shaft, feed shaft

418

Shaft, receiving shaft

419

Means of transport, sledges

420

button

421

Holding means, clamping device

422

Holding means, clamping device

423

brush

424

Drive, electric motor

425

Passage, passage opening

426

belt drive

427

end

428

Holding means, clamping device

429

Holding means, clamping device

430

Spring element, spring plate

431

Drive, cylinder

432

bracket

433

-

434

washer

435

bearing block

436

Elevator, metal blanket, blanket

437

opening

438

Locking, clamping and / or clamping device

439

End, leading

440

-

441

End, trailing

442

lever

443

feather

444

Actuating means, hose

445

feed

500

Aggregate, dryer

600

Aggregate, cooling unit

700

Aggregate, superstructure

800

Aggregate, folder

900

Aggregate, sheeter, plano boom

a

section length

s

length

b

Width, (B)

b '

Width, (B ')

B

Railway, paper web

B '

Railway, paper web

T

transport direction

D403

pivot point

D408

pivot point

S402

swivel axis

α

intermediate angle

β

intermediate angle

α '

intermediate angle

β '

intermediate angle

Claims (2)

1. Method for pulling on and/or removing a cover (405) with a storage device (403) which has a receiving shaft (418) for a cover (405) which is to be removed from the cylinder (304), a feed shaft (417) for a new cover (405) to be pulled on, and a transport means (419), characterized in that both the conveying of a new cover (405) out of the feed shaft (417) towards the cylinder (304) and the conveying of a cover (405) to be removed from the cylinder (304) into the receiving shaft (418) are performed by the same transport means (419) which is assigned to the two shafts (417; 418), in that a holding means (422) which is assigned to the receiving shaft (418) is activated on the transport means (419) for guiding a cover (405) away from the cylinder (304), and a holding means (421) which is assigned to the feed shaft (417) and is situated on the same transport means (419) is deactivated, and is pulled into the receiving shaft (418) by movement of the transport means (419), and in that, while being guided away, the cover (405) is deflected at least temporarily in an end phase of the unwinding from the cylinder (304) by pivoting of a roller (412) which is assigned to the storage device (403), in such a way that the leading end (439) experiences a torque via the deflection of the printing plate (405), in order for it to be possible to escape from the channel more simply.
2. Method according to Claim 1, characterized in that, while being guided away and at least temporarily in an end phase of the unwinding from the cylinder (304), a pressing apparatus (402) which has rollers (406) is moved from a position which is situated nearer to the cylinder (304) into a position which is more remote from the cylinder (304) by pivoting of the entire pressing apparatus (402) or a crossmember (404) which carries the rollers (406).

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