EP1644193A2

EP1644193A2 - Devices and methods for raising and/or lowering a printing form

Info

Publication number: EP1644193A2
Application number: EP04741853A
Authority: EP
Inventors: Andreas Ewald Heinrich Bernard; Lars Keil; Manfred Herrmann Liebler
Original assignee: Koenig and Bauer AG
Current assignee: Koenig and Bauer AG
Priority date: 2003-07-11
Filing date: 2004-06-22
Publication date: 2006-04-12
Anticipated expiration: 2024-06-22
Also published as: DE102004022866A1; US7690302B2; ES2359592T3; US20070125251A1; WO2005007405A3; EP1946926B1; WO2005007405A2; WO2005007405B1; ATE503631T1; US7464644B2; EP1946926A3; EP1946926A2; EP1644193B1; US20090038494A1; DE502004012363D1; ATE416922T1; DE502004008651D1

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

description

Devices and methods for mounting and / or removing a printing form

The invention relates to devices and methods for mounting and / or removing a printing form according to claim 1 or 4 or 22, 27 or 28.

EP 10 84839 A1 discloses a plate changing device which has a pivotable magazine with a feed shaft and a receiving shaft, a pivotable guide device and an adjustable or removable pressure roller. Each shaft has a carriage with a hook, by means of which the printing form to be flattened is held in a one-sided form fit and pulled into the shaft or guided towards the cylinder. The path of the printing form between the cylinder and the respective magazine shaft is determined by pivoting the guide device.

The invention has for its object to provide methods and devices for mounting and / or removing a printing form.

The object is achieved by the features of claim 1 or 4 or 22, 27 or 28.

An essential advantage that can be achieved with the invention is that a quick and reliable system for opening and / or removing a printing form is created with the least possible effort.

Due to the advantageous design as a two-part system with a semi-automatic and a magazine, the degree of automation can be selected as required. Due to the connection - in particular a frictional connection or a positive connection on both sides - use without consideration of gravity is free for both lower and upper printing units in the same design. A connection that is effective on both sides is to be understood here as a connection that can be subjected to pressure and tension in relation to the conveying direction in the longitudinal direction of the shaft.

Compared to two carriages with two drives, the use of only one movable carriage for the feed and receiving shaft lowers costs, maintenance costs and the risk of failure.

In contrast to the form fit, a frictional connection between the holding means and the printing form enables the use of printing formats of different sizes without the need for readjustment and / or additional recesses, hooks, stops or the like. The rear end on the magazine, which is designed in the manner of an open quiver, is also particularly advantageous with regard to printing forms of different lengths.

A movable flap arranged directly on the magazine for selecting the shaft and / or guiding the printing form into the receiving shaft reduces the effort compared to an arrangement which may otherwise be provided and at the same time always ensures a correct relative position between the magazine shaft and the flap.

Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.

Show it:

1 shows an overview of a printing press; Figure 2 is a schematic representation of webs of different widths.

3 shows a printing unit;

4 shows a first embodiment of a semi-automatic machine with an associated magazine;

5 shows a pivotable version of the semi-automatic machine;

6 shows a longitudinal section through the magazine from FIG. 4;

7 shows schematic representations of method steps a to p when flattening or flattening;

8 simplified representation of a printing form in a beveled form;

Fig. 9 is a schematic representation of a clamping and / or tensioning device.

A printing press, in particular a web-fed rotary printing press for printing on one or more webs B, has a plurality of units 100; 200; 300; 400; 500; 600; 700; 800; 900 for supply, printing and further processing. From Z. B. a roll unwinder 100, the web B to be printed, in particular paper web B, is unwound before it is fed via a feed unit 200 to one or more printing units 300. Additional printing units 300 can be provided in addition to the printing units 300 provided as standard for multi-color printing (e.g. four pieces for four-color printing), which can then also be used, for example, alternately with one or more of the other printing units 300 for the flying printing plate change.

In an advantageous embodiment, a painting unit 400 can be provided in the web path his.

After printing and, if necessary, painting, the web B passes through a dryer 500 and, if appropriate, is 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 conditioning device, not shown in FIG. B. a coating device and / or rewetting can be provided. After cooling and / or conditioning, web B can be fed to a folder 800 via a superstructure 700. The superstructure 700 has at least one silicone mechanism (not shown in FIG. 1), a slitter and a turning device and a funnel unit. The silicone plant mentioned can also be in front of the superstructure 700, e.g. B. in the area of the cooling unit 600. The superstructure 700 can also have a perforating unit (not shown in FIG. 1), a gluing unit, a numbering unit and / or a plow case. After passing through the superstructure 700, the web B or partial webs are guided into a folder 800.

In an advantageous embodiment, the printing press additionally has a separate cross cutter 900, e.g. B. a so-called. Plano boom 900, in which, for example, a web B not guided through the folder 800 is cut into format sheets and optionally stacked or laid out.

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 the processing of webs B of a maximum width b (Fig. 2) of z. B. allowed up to 1,000 mm. The effective width here is the respective width or clear width of the components (eg roller, cylinder, feedthrough, sensor system, travel paths, etc.) which interact directly or indirectly with the web B; 200; 300; 400; 500; 600; 700; 800; 900 to understand, so that the full width b can be processed, conditioned and conveyed. The units 100; 200; 300; 400; 500; 600; 700; 800; 900 in their functionality (material supply, web transport, sensors, further processing) designed such that even partial webs B 'can be processed in the printing press down to a width b' of only 400 mm.

The aggregates 100; defining or processing a section length a; 200; 300; 400; 500; 600; 700; 800; 900 are designed in such a way that they define, for example, a section length a on web B lying between 540 and 700 mm. The section length a is advantageously between 540 and 630 mm. In a special version, the section length a is 620 ± 10 mm. In a further development of the printing press, the units 100; 200; 300; 400; 500; 600; 700; 800; 900 designed in such a way that with just a few changes, the printing press can be designed with a section length of 546 mm, 578 mm, 590 mm or 620 mm. For the change, for example, essentially only an interchangeability of bearing elements for printing unit cylinders (see below), an adaptation of the drive (see below) and an adaptation in the folder 800 or the cross cutter 900 (see below) are required in order to equip the same printing press for different formats , The section length a is, for example, standard with four standing printed pages, z. B. A4, in the transverse direction of the web B next to each other and two printed pages (for example a length s) in the longitudinal direction one behind the other. Depending on the printed image and subsequent processing in the superstructure 700 and folder 800, however, other page numbers per section length a are also possible.

For multi-color printing on web B; B 'the printing press has several, e.g. B. at least four, here in particular five essentially identically equipped printing units 300. The printing units 300 are preferably arranged next to one another and are separated from the web B; B 'run horizontally. The printing unit 300 is preferably a printing unit for offset printing, in particular a double printing unit 300 or an I printing unit 300 with two printing units 301, ∑. B. two offset printing units 301 for double-sided printing in the so-called rubber-against-rubber operation. At least one of the printing units 300, at least in the lower area, and optionally in the upper area, are arranged upstream and downstream of rollers 302, by means of which an incoming web B; B 'can be guided around the printing unit 300 below or above, a web B guided around an upstream printing unit 300; B 'can be carried out by the printing unit 300, or a web B carried out by the printing unit 300; B 'can be guided around the downstream printing unit 300.

Fig. 3 shows schematically the arrangement of two over the web B; B 'interacting printing units 301, each with a cylinder 303 as a transfer cylinder and a cylinder 303 designed as a forme cylinder 304; 304, an inking unit 305 and a dampening unit 306. In an advantageous embodiment, the printing unit 300 has for each forme cylinder 304 devices for semi or fully automatic plate feeding 401 or changing a printing form 405, e.g. B. a pressure plate 405 (see below for Fig. 4 ff.).

In a further development, in particular if the printing press is to be suitable for an imprint operation, at least one or more printing units 300 has additional guide elements 308 closely before and after the nip point of the printing unit 300. Should a printing unit 300 be without printing and without contact between web B; B 'and transfer cylinders 303 are passed through, the path shown in broken lines in FIG. 3 using the guide elements 308 is advantageous. Bahn B; B 'passes through the nip point in such a way that it essentially forms an angle of 80 ° to 100 °, for. B. forms about 90 °. The guide elements 308 are preferably designed as air-flushed rods or rollers. This reduces the risk of abrasion of previously freshly printed ink.

In a development of the printing unit 301 shown, a washing device 434 is assigned to each transfer cylinder 303. The elastic surface of the transfer cylinder 303 can be cleaned by means of the washing device 434. The cylinders 303; 304 each have a circumference between 540 and 700 mm, preferably transfer and form cylinders 303; 304 have the same scope. The circumferences are advantageously between 540 and 630 mm. In a special version, the section length a is 620 ± 10 mm. In a further development, the printing unit 300 is designed such that cylinder 303; 304 with a circumference of 546 mm, 578 mm, 590 mm or 620 mm. For example, only an exchange of bearing elements 308 or a changed position of the holes in the side frame (and sprue; see below) for the cylinders 303; 304 and an adaptation of the drive (lever, see below).

The inking unit 305 has in addition to an ink supply, for. B. a paint box 311 with an actuator 312 for regulating the ink flow, a plurality of rollers 313 to 325. The ink supply can also be designed as a doctor bar. With rollers 313 to 325 placed against one another, the ink passes from the ink fountain 311 via the inking roller 313, the film roller 314 and a first inking roller 315 to a first distribution cylinder 316. From there, the ink, depending on the mode of operation of the inking unit 306 (see below), passes over at least an inking 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 ink from the first distribution cylinder 316 is optionally or simultaneously (in series or in parallel) via two further distribution cylinders 321; 324 to the application rollers 322; 323; 325. In an advantageous embodiment of the dyeing and dampening unit 305; 306, the second distribution cylinder 324 can simultaneously with a roller 328, for. B. applicator roller 328, the dampening unit 306 act together.

The roller 328 acts with a further roller 329 of the dampening unit 306, e.g. B. a rubbing roller 329, in particular an iridescent chrome roller 329 together. The chrome roller 329 receives the dampening solution from a dampening device, e.g. B. one Roller 330, in particular an immersion roller 330, which in a fountain solution 332, z. B. a water tank. A drip plate 335 is preferably arranged under the water box for collecting condensate water which forms on the water box, which can be heated in an advantageous embodiment, e.g. B. is carried out by means of a heating coil.

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 can be removed from the inking unit 305 in the ink path, in particular in front of the first distribution cylinder 316. This takes place in that a corresponding removal device 333 can be set on this roller 326 itself, or, as shown, on a roller 327 cooperating with it (FIG. 3).

In an advantageous development, the printing unit 300 has in its input area or in the area of its input gusset between the two transfer cylinders 303 a device for influencing the fan-out effect 336, ie. H. to influence a change in the transverse dimension / width of the web B caused, for example, by the printing process (in particular the moisture); B 'from pressure point to pressure point. The device 336 is preferably arranged in the entrance area of a printing unit 300 following a first printing unit 300, i. H. if the web B; B 'has already been printed on at least once. It has at least one actuator, e.g. B. a support element, by means of which touching the web B; B 'or advantageously the same can be deflected in a direction perpendicular to the plane of the path.

As indicated in FIG. 3, in an advantageous embodiment, the printing group 301 each has a device 401 for - at least partially automated - changing of a printing form 405 on the associated form cylinder 304. The device 401 is designed in two parts and has one in the area of a nip between the transfer and forme cylinders 303; 304 arranged pressing device 402, also "change semi-automatic" or Called "semi-automatic" 402, and a structurally separate storage device 403, for example a magazine 403, with feed and receiving devices for the printing forms 405 (Fig. 4 ff.).

The printing form 405 extends - regardless of the presence of a device 401 for supporting the printing form change essentially over the entire width of the web B to be printed; B 'and essentially (except for a joint or a channel opening) around the entire circumference of the forme cylinder 304 and is dimensioned accordingly. Accordingly, if available, semi-automatic 402 and magazine 403 are also in axial extension for receiving printing forms 405 with a width of an entire web B to be printed; B 'dimensioned.

The printing group 301 has at least one semi-automatic machine 402. For this purpose, in a first embodiment for the semi-automatic 402 (FIG. 4), a roller 406 can be moved on a cross-member 404 fixed to the frame, for. B. resiliently arranged which by means of a drive 407 (actuating means 407), for example a hollow body (hose) 407 which can be pressurized with pressure, can be set in the direction of the lateral surface of the cylinder 304 (e.g. counter to the spring force) or can be switched off (e.g. E.g. with relief). In addition, a protection 408, which can also be switched on or off, can be mounted on the crossmember 404 about a pivot point D408, and by means of a drive 409, e.g. B. a pressurizable hollow body (hose) 409 in the direction of the outer surface of the cylinder 304 can be adjusted (e.g. counter to the spring force) or switched off (e.g. when relieved). As can be seen in FIG. 5, a plurality (here 10) of rollers 406 are mounted axially next to one another on respective spring elements 430, in particular spring plates 430. All of these can preferably be actuated jointly or in groups by a common drive 407.

In a second embodiment of the semi-automatic machine 402 (FIG. 5), the semi-automatic machine 402 or the traverse 404 having the roller 406 is not fixed to the frame, but pivotably arranged in the frame about a pivot axis S402 spaced from the axis of rotation of the roller 406 but essentially parallel to the axis of rotation of the forme cylinder 304. For the pivotal movement a drive 431, z. B. a pressurizable cylinder 431 is provided, which is articulated eccentrically to the pivot axis S402, for example at one end on the side frame, not shown, and at the other end on the semi-automatic machine 402 (e.g. on the crossbar 404 or a lever arm connected to it). The pivotable traverse 404 or the interchangeable semi-automatic 402 can be pivotably mounted directly on the side frame or, as shown in FIG. 5, via a holder 432 which is connected to the side frame. The holder 432 can advantageously be mounted on the side frame or a bearing block 435 arranged on the side frame so as to be adjustable in a direction perpendicular to the pivot axis S402.

The on and off movement of the roller 406 can be in the manner of the first embodiment by means of a drive 407, for. B. the pressurized hollow body 407, and spring force, possibly also in a version with additional protection 408th

In an alternative solution, the swivel axis S402 is selected such that the fixed, but possibly spring-mounted, roller 406 can be turned on or off alone by pivoting the cross member 404. An additional drive of the roller 406 (drive 407) can then be omitted.

In principle, the exchangeable semi-automatic 402 described - in the first or second embodiment - can be used to plate a printing form 405 semi-automatically. For this purpose, in the first embodiment, for example, a printing form 405 to be drawn up is inserted into the space between roller 406 and forme cylinder 304 and initially remains loosely clamped there. Then the roller 406 is turned on and the cylinder 304 (here clockwise) is rotated. The leading edge of the printing form 405 (e.g. folded by 40 ° to 50 °, in particular by an intermediate angle of approximately 45 °; see FIG. 8) jumps into an opening 411 (see FIGS. 4 and 9) in the forme cylinder 304 axial Clamping and / or tensioning channel extending over at least the usable width; the printing form 405 is wound around the same by rotating the cylinder 304 until the trailing edge, in particular bent by an intermediate angle β of approximately 90 °, is also pressed into the channel by the roller 406. Thereafter, a possibly existing, symbolically indicated locking, clamping and / or tensioning device 410 is actuated (for details on the clamping and / or tensioning device 410, see FIG. 9). A flattening takes place in the reverse sequence, the pushed out printing form 405 can be removed manually from the space between roller 406 and cylinder 304. The opening 411 to the channel preferably has a width of 1 to 5 mm, in particular less than or equal to 3 mm, in the region of the lateral surface in the circumferential direction of the cylinder 304. The clamping device 410 can advantageously be actuated pneumatically, for example as one or more pneumatically actuated levers 442, which, in the closed state, are prestressed by spring force (spring 443) against the trailing end 441 (e.g., bent approximately 90 °) reaching into the channel , executed. A hose 444 which can be pressurized with pressure medium can preferably be used as the actuating means 444 (FIG. 9). The hose 444 is supplied with pressure medium via a feed 445. A channel wall cooperating with the leading end 439 forms with the outer surface a nose-like shape of an intermediate angle α ', which essentially corresponds to that of the bevel 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 beveled trailing end 441.

For the second version of the semi-automatic machine 402, the flattening or flattening takes place in principle in the same steps, however, with the flattening at the point in time at which the leading end 439 is to jump out of the channel of the clamping device 410, the semi-automatic machine 402 is temporarily out of its normal position is brought into the end position further away from the cylinder 304. In a preferred embodiment, however, the printing forme 405 is fed or removed automatically through the magazine 403, which is structurally separate from the semi-automatic machine 402. The second embodiment of the semi-automatic machine 402 is preferably i. V. m. the second version of the magazine 403 described below. The first version of the magazine 403 is advantageous for the first version of the semi-automatic 402. As can be seen in FIG. 4, the magazine 403 is pivotably mounted about a pivot point D403 with respect to the side frame.

In a first embodiment of the magazine 403, a roller 412 can be pivoted about a pivot axis running parallel to the cylinder axis, and is mounted on the magazine 403 so that it can be driven by a drive 413. When a new printing form 405 is pulled up, the roller 412 serves to deflect the printing form 405 in such a way that a prestressing of the leading end 439 results against the lateral surface of the cylinder 304.

In a second embodiment of the magazine 403, the above-mentioned. However, roller 412 and drive 413 are not on (not explicitly shown). For this reason, the magazine 403 is shown according to the first embodiment with roller 412 and drive 413, the following description, apart from the roller 412 and drive 413, being applicable to both the first and second embodiments.

On one of the nip points of the two cylinders 303; 304 facing side is a flap 414 movable in the magazine 403, z. B. pivotable about a parallel to the cylinder axis pivot axis, stored and advantageously by a drive 416, z. B. driven by a pressure medium cylinder. The flap 41 is used to open or close a shaft 417 which can be seen in FIG. B. feed chute 417 for new printing forms 405. When the feed chute 417 is closed, the path for a new printing form 405 to the nip point is blocked and the path for a printing form 405 to be removed - in the first embodiment on the roller 412 over - into a shaft 418, e.g. B. receiving shaft 418 free (both positions indicated in Fig. 6). Inside the magazine 403 is a means of transport 419, z. B. a carriage 419, in the longitudinal direction to the shafts 417; 418 movably arranged. It has a holding means 421, e.g. B. a clamping device 421 on a side with the new printing forms 405 interacting and a holding means 422, z. B. a clamping device 422 on a side with the printing plates 405 to be removed cooperating. The carriage 419 is in one piece here (possibly consisting of several connected pieces), both shafts 417; 418 designed to operate, whereby at least one shaft 418 is encompassed by the carriage 419, forming a passage or passage opening 425 for the removed printing form 405. Both shafts 417; 418 encompassed by the carriage 419, the respective clamping device 421; 422 is provided and the opposite side of the carriage 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 designed to be actively clamping or else to be self-locking (for example, working against a spring mechanism).

A button 420 is preferably arranged in the area of the flap 414 in such a way that it registers a position of a new pressure plate 405 in the shaft 417 when the flap 414 is closed, thus ensuring a correct position. The push button 420 is preferably designed as an inductive push button 420.

The clamping devices 421; 422 and possibly brushes 423 carrying carriage 419 is driven by a drive 424, z. B. driven an electric motor 424. This takes place, for example, via a belt drive 426. In principle, the slide 419 can also be driven by a drive 424 designed as a cylinder which can be actuated with pressure medium. A rear end area 427 facing away from cylinder 304 is preferably open, at least in the area of shafts 417 and 418. In spite of the identical construction of the magazine, 403 printing forms 405 of various formats can for various types of printing presses. In the end region 427, each shaft 417; 418 one or more further holding means 428; 429, e.g. B. Clamps 428; 429 can be provided, which hold the respective printing form 405 in a designated storage position (before flattening or after flattening) in magazine 403. At least for one of the shafts 417; 418, in particular the receiving shaft 418, should be assigned such a holding means 428 which is fixed to the frame with respect to the storage device 403. The clamping devices 428; 429 are arranged fixed to the frame on the magazine 403, while the above-mentioned clamping devices 421; 422 are assigned to the movable carriage 419 and are connected to it.

The holding means 421; 422; 428; 429 can also be embodied in a manner other than that shown, but preferably all, at least, however, the holding means 421; 422 are designed as connections effective on both sides. In addition to the frictional connection shown, this can possibly also be a positive connection acting on both sides. A connection that is effective on both sides is to be understood here as a connection that can be subjected to pressure and tension in relation to the conveying direction in the longitudinal direction of the shaft.

In the following FIGS. 7a to 7p, the processes or process steps in the magazine 403 during the flattening or flattening are shown schematically. For the sake of clarity, the reference symbols have only been used in the first figures. 7, the shafts 417 and 418 with associated clamping devices 421; 422; 428; 429 swapped as an example compared to the illustration in FIG. 6. In principle, the shaft 417 can always be at the top and the shaft 418 can always be at the bottom or vice versa, but it is expedient that the feed shaft 417 is located on the path B; B 'closer to the side of the magazine 403 is arranged, so that in an upper printing unit 301 the feed chute 417 is arranged at the bottom and in a lower printing unit 301 the feed chute 417 is arranged at the top. 7a shows the magazine 403 in the starting position, ie there is no printing form 405 in one of the shafts 417; 418, the clamping devices 421; 422; 428; 429 are parked, ie they give the respective shaft 417; 418 free and are e.g. B. in a rest position. Furthermore, the flap 414 is in a position in which the feed chute 417 is closed and the receiving chute 418 is open. The carriage 419 is in a rear position, its rest position. A printing form 405 is now introduced into the feed chute 417 (FIG. 7b) until it comes to rest, for example, on a stop 415 and is then secured by the clamping device 429 fixed to the frame (FIG. 7c). The securing can take place automatically and / or under the condition that a button 420 that senses the leading edge (eg in the area of the stop 415, but only shown in FIG. 7d) registers the correctly positioned new printing plate 405. The magazine 403 is now ready for any subsequent plating on an "empty" cylinder 304, which would continue with the clamping of the new pressure plate 405 according to FIG. 7i (but without detaching an old pressure plate from the slide 419).

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

It is not shown in FIG. 7d that, for flattening, the roller 406 shown in FIGS. 4 and 5 is first set by the drive 407 to the pressure plate 405 still located on the cylinder 304, and then the locking device, clamping device or tensioning device that may be present 410 for the trailing end of the pressure plate 405 is released so that the end can escape from the channel when the cylinder 304 is rotated in the direction opposite to the production. By turning the cylinder 304, the pressure plate 405, guided by the roller 406 or in it, is released Point still pressed against the lateral surface, gradually by its internal tension from the cylinder 304 and is pushed into the shaft 418 by the rotation of the cylinder 304 (FIG. 7d). The two clamping devices 422; 428 are inactive.

The carriage 419 is either already in a position close to the cylinder or is moved there as shown in FIG. 7e in comparison to FIG. 7d. In a phase in which the printing form 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 loosening the clamping device 410 and further rotating the cylinder 304 leading end 439 can jump out of the channel.

In order to simplify loosening of the leading end 439 of the pressure plate 405 from the channel of the locking, clamping device or tensioning device 410, in addition to parking the roll 406, in an advantageous procedure in the final phase of unwinding the pressure plate 405, this is done in a first variant by pivoting the roll 412 bent according to FIG. 4 in a suitable manner. The leading end 439 experiences a torque via the deflection of the pressure plate 405 in order to be able to escape from the channel more easily when the cylinder 304 is turned further. The bending can, as shown by way of example in FIG. 7f, also be carried out by changing over the flap 414, it being then possible to dispense with a roller 412 to be provided and its drive 413.

In another variant, the semi-automatic 404 which can be pivoted according to FIG. 5 is moved into a position at this stage in such a way that the roller 406 (drive 407 deactivated), which has just been switched off a short time ago, is still further away from the cylinder 304. This gives the leading end 439 sufficient clearance to be able to escape from the channel more easily if the cylinder 304 is turned further. If the leading end 439 of the pressure plate 405 is now also removed from the channel of the locking device, the pressure plate 405 can no longer be conveyed by rotating the cylinder 304. As shown in FIG. 7f, the pressure plate 405 to be flattened is clamped by the clamping device 422 of the slide 419 located in the front position and is now completely drawn into the receiving slot 418 of the magazine 403 by moving the slide 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 or its normal position after the leading plate edge has been released from the channel of the locking device.

With the subsequent clamping of the pressure plate 405 by the clamping device 428 fixed to the frame, it is secured in the receiving shaft 418 in a parking position until removal by the operating personnel or a device provided for this purpose (FIG. 7h), as can be seen in FIG assigned clamping device 422 can be released. This completes the process of flattening an “old” pressure plate 405, apart from removal from the shaft 418. To remove the old pressure plate 405 at this or a later time, only the clamping device 428 has to be released and the pressure plate 405 through the preferably open one can be removed from the rear end of the magazine 403.

In the event of plate-up as part of a plate change or the use of a new pressure plate 405 at the start of production, the steps described below follow the above steps for FIGS. 7a to c. By means of the clamping device 421 assigned to the carriage 419 in the area of the feed shaft 417, the new pressure plate 405 is clamped to the carriage 419 located in a rear position (FIG. 7i, second part) and the clamping is then released by the most arranged clamping device 429 (FIG. 7k ). If the flap 414 is still in the closed position for the feed shaft 417, it 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. 71). The roller 406 is placed against the cylinder 304 by activating the drive 407 before the pressure plate 405 reaches its outer surface. The roller 406 serves as a stop for the leading end 439 of the printing form 405, whereby it rotates through friction with the cylinder 304 now rotating in the production direction in such a way that the leading end 439 experiences a force in the direction of the cylinder surface due to friction on the roller surface. When the channel of the clamping and / or tensioning device 410 passes through the rotation of the cylinder 304 under the leading end 439 of the pressure plate 405 struck on the roller 406, this is pressed into the channel, supported by the roller 406 and its rotational movement. The pressure plate 405 is preferably not released by the clamping device 421 of the magazine 403 immediately after the leading end 439 has snapped into place, but, as shown in FIG. 7m, is still held by the clamping device 421 until it is partially opened.

While the pressure plate 405 is further pulled up by turning the cylinder 304, the clamping is released by the clamping device 421 (FIG. 7n). The roller 406 remains in contact with the printing plate 405 for the entire process of winding it up and finally pushes the trailing end 441 into the channel. After locking in the channel, the roller 406 is turned off. H. the pressure medium deactivated. After releasing the clamping device 421 of the magazine 403, the carriage 419 is preferably returned to its rest position, i. H. retracted to a rear position Fig. 7o. As already mentioned above, in the event of a plate change, the old pressure plate 405 can now be removed after loosening the clamping device 428, FIG. 7p. Both shafts 417; 418 are now empty, the carriage 419 is in its starting position. For this purpose, the flap 414 is possibly still brought into the position in which the receiving shaft 418 is open for a pressure plate 405 to be flattened.

The transfer cylinder 303 has at least one in its circumference in FIG. 4 indicated elevator 436, which is held in at least one axially extending on the lateral surface channel. The transfer cylinder 303 preferably has only one over the effective length or essentially over the entire width of the web B to be printed; B 'reaching and extending essentially (except for a shock or a channel opening) around the entire circumference of the transfer cylinder 303 elevator 436. The elevator 436 is preferably designed as a so-called metal printing blanket 436, which has an elastic layer (e.g. rubber) on an essentially dimensionally stable carrier layer, e.g. B. has a thin metal plate. The ends of this elevator 436 are now inserted into the channel through an opening 437 on the lateral surface and are held there in a frictional or positive manner. In the case of a metal printing blanket 436, the ends are bent / folded (e.g. in the area of its leading end by approximately 45 ° and in the area of its trailing end by approximately 135 ° or by an intermediate angle of 45 °). These ends extend through the opening 437 of a channel extending axially over the entire width to be used of the transfer cylinder 303, which also, for example, also has a locking device 438, clamping and / or tensioning device 438, in particular a clamping device shown essentially in that of the forme cylinder 304 in FIG. 9 410 accordingly. For this reason, the reference numerals of the forme cylinder 304 have been added to the corresponding ones of the transfer cylinder 303 in FIG. 9. 8 and 9, for example, corresponds to the dimensionally stable carrier layer of the elevator 436, which is designed as a metal printing blanket 436, an elastic layer on the effective outer surface not being shown in FIG. 9, however. The opening 437 to the channel preferably has a width of 1 to 5 mm, in particular less than or equal to 3 mm, in the region of the circumferential direction of the cylinder 304. The clamping device 438 is advantageously pneumatically operable, for. B. as one or more pneumatically actuated lever 442, which are biased in the closed state by means of spring force against the trailing end reaching into the channel. A hose 444 which can be pressurized with pressure medium can preferably be used as the actuating means 444. The transfer cylinder 303 preferably carries a single elevator 436 designed as a printing blanket 436 which, regardless of the presence of a washing device 434 or the special design of a clamping device 438, extends essentially over the entire width of the web B to be printed; B 'and essentially (except for a joint or a channel opening) extends around the entire circumference of the transfer cylinder 303, and which is dimensioned accordingly.

LIST OF REFERENCE NUMBERS

100 unit, roll handling

200 unit, feed mechanism

300 unit, printing unit, double printing unit, I printing unit

301 printing unit, offset printing unit

302 roller

303 cylinders, transfer cylinders

304 cylinders, form cylinders

305 inking unit

306 dampening system

307 -

308 guide element

309 -

310 -

311 color box

312 actuator

313 roller, duct 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, friction roller, chrome roller

330 roller, diving roller

331 -

332 fountain solution

333 removal device

334 -

335 drip tray

336 Device for influencing the fan-out effect

400 unit, coating unit

401 Device for semi or fully automatic plate guidance

402 pressing device, change semi-automatic, semi-automatic

403 storage device, magazine

404 traverse

405 printing form, printing plate

406 roll

407 drive, actuating means, hollow body, hose

408 protection

409 drive, hollow body, hose

410 clamping and / or tensioning device

411 opening

412 roll

413 drive

414 flap

415 stop

416 drive 417 shaft, feed shaft

418 shaft, receiving shaft

419 means of transport, sledge

420 buttons

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 area

428 holding means, clamping device

429 holding means, clamping device

430 spring element, spring plate

431 drive, cylinder

432 bracket

433 -

434 washing device

435 bearing block

436 elevator, metal printing blanket, printing blanket

437 opening

438 locking, clamping and / or tensioning device

439 end, leading

440 -

441 end, trailing

442 levers

443 spring

444 actuating means, hose

445 feeder 500 unit, dryer

600 unit, cooling unit

700 unit, superstructure

800 unit, folder

900 unit, cross cutter, plano boom

a section length s length

b width, (B) b 'width, (B')

B web, paper web

B 'web, paper web

T direction of transport

D403 pivot point D408 pivot point

S402 swivel axis

α intermediate angle ß intermediate angle

α 'intermediate angle ß' intermediate angle

Claims

Expectations

1. Device for pulling up and / or removing an elevator (405) with a pressing device (402) having a roller (406), the roller (406) being arranged on a crossmember (404) in such a way that it is driven by a drive (407) can optionally be turned on or off on a cylinder (304) or an elevator (405) located on the cylinder (304), characterized in that the pressing device (402) or the crossmember (404) carrying the roller (406) ) can be moved overall in such a way that a distance between the roller (406) and the cylinder (304) can optionally be increased.

2. Device according to claim 1, characterized in that the pressing device (402) is assigned a storage device (403) which has a receiving shaft (418) for an elevator (405) to be removed from the cylinder (304) and a feed shaft (417) for one new elevator (405) to be installed and at least one means of transport (419) for conveying an elevator (405) in the storage device (403).

3. Device according to claim 2, characterized in that the transport means (419) is assigned to both shafts (417; 418) and has a holding means (421; 422) assigned to the receiving shaft (418) and to the feed shaft (417).

4. Device for pulling up and / or taking off an elevator (405) with a storage device (403) which has a receiving shaft (418) for an elevator (405) to be removed from the cylinder (304) and a feed shaft (417) for a new elevator (405) and at least one means of transportation (419) for conveying an elevator (405) in the storage device (403), characterized in that the means of transportation (419) comprises two shafts (417; 418) and has a holding means (421; 422) assigned to the receiving shaft (418) and to the feed shaft (4 7).

5. The device according to claim 4, characterized in that the storage device (403) is assigned a pressing device (402), at least one roller (406) being arranged on a crossmember (404) in such a way that it is driven by a drive (407 ) can optionally be turned on or off on a cylinder (304) or an elevator (405) located on the cylinder (304).

6. The device according to claim 1 or 5, characterized in that a hollow body (407) which can be acted upon by pressure medium is provided for positioning the roller (406).

7. The device according to claim 6, characterized in that a plurality of rollers (406) arranged next to one another in the axial direction on the crossmember (404) can be set by a common hollow body (407).

8. The device according to claim 5, characterized in that the pressing device (402) or the crossmember (404) carrying the roller (406) can be moved overall in such a way that a distance between the roller (406) and the cylinder (304) can optionally be increased is.

9. The device according to claim 3 or 4, characterized in that the holding means (421; 422) assigned to the transport means (419) are designed such that they are lifted (405) with respect to the longitudinal direction of the respective shaft (417; 418 ) Establish a connection that can withstand pressure and tensile loads.

10. The device according to claim 9, characterized in that the connection which can be produced with the holding means (421; 422) is designed as a frictional connection.

11. The device according to claim 9, characterized in that the holding means (421; 422) is designed as a hollow body (421; 422) to which pressure medium can be applied.

12. The device according to claim 3 or 4, characterized in that at least one of the shafts (417; 418) is assigned at least one holding means (428; 429) fixed to the frame with respect to the storage device (403).

13. The apparatus according to claim 3 or 4, characterized in that the two shafts (417; 418) are each assigned at least one holding means (428; 429) fixed to the frame with respect to the storage device (403).

14. The apparatus according to claim 12 or 13, characterized in that the connection which can be produced with the holding means (428; 429) is designed as a frictional connection.

15. The apparatus of claim 12 or 13, characterized in that the holding means (428; 429) is designed as a hollow body (428; 429) to which pressure medium can be applied.

16. The apparatus according to claim 3 or 4, characterized in that a passage (425) is formed in the transport means (419) for at least one of the shafts (417; 418), which has an elevator (405.) Located in this shaft (417; 418) ) encompasses at least in part.

17. The apparatus according to claim 16, characterized in that passages (425) encompassed by the transport means (419) are assigned to both shafts (417; 418).

18. The apparatus according to claim 16 or 17, characterized in that on one of the the holding means (421; 422) is provided on a side of the passage (425) assigned to the shaft and the opposite side of this passage (425) serves as an abutment.

19. The apparatus of claim 2 or 4, characterized in that the storage device (403) in the region of an end near the cylinder has a flap (414) which, in a first position, the path of an elevator (405) to be removed into the receiving shaft (418) and in a second position clears the way of an elevator (405) to be pulled out of the feed shaft (417).

20. The apparatus according to claim 19, characterized in that in the first position of the feed shaft (417) is closed by the flap (414) against removal of an elevator (405) to the cylinder (304).

21. The apparatus according to claim 19, characterized in that in the second position of the receiving shaft (418) is closed by the flap (414) against the supply of an elevator (405) from the cylinder (304).

22. A method for mounting and / or removing an elevator (405) with a receiving shaft (418) for an elevator (405) to be removed from the cylinder (304), a feed shaft (417) for a new elevator (405) and a means of transport (419) having storage device (403), characterized in that both the conveying of a new elevator (405) from the feed shaft (417) to the cylinder (304) and the conveying of an elevator (405) to be removed from the cylinder (304) in into the receiving shaft (418) by the same means of transport (419) assigned to the two shafts (417; 418).

23. The method according to claim 22, characterized in that for supplying a a new elevator (405) to the cylinder (304) activates a holding means (421) assigned to the feed shaft (417) on the transport means (419) and deactivates a holding means (422) assigned to the receiving shaft (418) on the transport means (419).

24. The method according to claim 22, characterized in that, in order to discharge an elevator (405) from the cylinder (304), a holding means (422) assigned to the receiving shaft (418) on the transport means (419) is activated and a holding means (417) assigned to the feed shaft (417) 421) on the same means of transport (419) is deactivated.

25. The method according to claim 24, characterized in that during the removal of the elevator (405) at least temporarily in an end phase of the unwinding from the cylinder (304) by a roller (43) assigned to the roller (412) against an internal stress.

26. The method according to claim 24, characterized in that during the removal and at least temporarily in an end phase of the unwinding from the cylinder (304), a pressing device (402) is brought into a position further away from the channel of the cylinder (304) by pivoting from a normal position becomes.

27. A method for removing an elevator (405) with a storage device (403) and a pressing device (402) having at least one roller (406) that can be optionally switched on and off, characterized in that at least temporarily in an end phase of unwinding from the cylinder (304 ) the elevator (304) is bent against a residual stress by a roller (412) assigned to the storage device (403).

28. Method for removing an elevator (405) with a storage device (403) and having at least one roller (406) that can be optionally switched on and off Pressing device (402), characterized in that at least temporarily in a final phase of unwinding from the cylinder (304), a pressing device (402) is brought into a position further away from the channel of the cylinder (304) by pivoting from a normal position.

29. The method according to claim 27 or 28, characterized in that during the preceding phase of unwinding, the pressing device (402) is in the normal position and the roller (406) is driven by a drive (407) on the elevator (304) to be unwound and in the final phase is stopped.