EP0627097A1

EP0627097A1 - Multiple assembly register system

Info

Publication number: EP0627097A1
Application number: EP93903801A
Authority: EP
Inventors: Kurt Schweizer
Original assignee: B BACHER GmbH
Current assignee: B BACHER GmbH
Priority date: 1992-02-21
Filing date: 1993-02-13
Publication date: 1994-12-07
Also published as: DE4205301A1; WO1993017369A1

Abstract

L'invention concerne un dispositif pour registre à montage multiple, permettant d'effectuer des montages, même de grands formats, en utilisant une norme de registre prédéterminée, de telle manière que les positions de montage sélectionnées puissent être verrouillées ou mémorisées de façon particulièrement précise et souple. Un dispositif de montage préféré comprend une table de montage disposée horizontalement, au-dessus de laquelle quatre têtes de positionnement distinctes (15) peuvent se déplacer en toute position voulue au moyen d'un système coulissant d'axes X-Y (11, 12, 13). Des réglettes (16) d'une norme de registre prédéterminée sont fixées à la partie inférieure de chaque tête de positionnement (15). Le dispositif pour registre à montage multiple selon l'invention permet de monter, essentiellement en parallèle, quatre doubles pages DIN A4 (I-IV) d'un montage couleur. Les têtes de positionnement (15) sont verrouillées en position, de sorte que les films de maquettes pour les montages couleurs suivants peuvent être montés, sans ajustement pour chacun d'eux, exactement aux mêmes positions, sur d'autres feuilles de base de montage.The invention relates to a device for a multi-edit register, making it possible to perform edits, even of large formats, using a predetermined register standard, so that the selected edit positions can be locked or memorized in a particularly precise manner. and flexible. A preferred mounting device comprises a mounting table arranged horizontally, above which four separate positioning heads (15) can move to any desired position by means of a sliding system of XY axes (11, 12, 13 ). Rulers (16) of a predetermined register standard are attached to the bottom of each positioning head (15). The device for a multiple mounting register according to the invention makes it possible to mount, essentially in parallel, four double DIN A4 pages (I-IV) of a color mounting. The positioning heads (15) are locked in position, so that master films for subsequent color assemblies can be mounted, without adjustment for each of them, in exactly the same positions, on other assembly base sheets .

Description

■ Multiple Montaqe ReαisterSystem

The invention relates to a multiple assembly register system, in particular for the assembly of large-format printing templates in the print preparation stage, wherein at least one exposed printing template film provided with register perforations is mounted on a mounting base sheet or a printing plate to be exposed in a predeterminable position in a table-fixed XY coordinate system becomes.

In the print preparation stage, when assembling print templates, it is extremely important to assemble matching color separations from multi-color print templates with high precision of the positions.

The larger the formats, the more difficult it is to maintain such precision.

Standardized register systems are customary in printing technology, which, by means of perforations provided on the edge of the printing original films and register rails engaging therein, enable predetermined positioning of one of the printing originals to expose a printing plate. In particular has the "Control 2000" register system developed by Bacher has proven itself, with which most of the printing machines from Heidelberger Druckmaschinen AG are equipped.

In the case of the register system mentioned, the printing template film for the Heidelberg GTO is fitted precisely on the using a standardized 3-point register bar or register pins. Pressure plate positioned. The register perforations are spaced a large distance apart and secure a position of the films without any distortion.

It is now desirable to use a suitable register system, in particular the above-mentioned Heidelberg GTO register system, even during the assembly, in particular of large-format printed sheets. Well-known printing press manufacturers already sell sheet and web printing presses for large formats, for example the formats 72 x 102 centimeters or 52 x 72 centimeters. If at the same time all films that correspond to several printed pages are to be transferred to the printing plate, special requirements must be placed on the positional precision and the flexibility of the positions of the individual printing master films that are to be mounted next to one another in the register standard.

It is therefore an object of the invention to have a multiple assembly register system, which is particularly suitable for assembly. on several large format print templates is suitable in the print preparation stage, so that the films can be transferred to a standardized register system already during assembly and that a high degree of positioning precision and great flexibility with regard to different target positions are possible during assembly . The above object is achieved according to the invention in that a mounting device which can be moved at least in the X and Y directions above the table is provided, which has at least one positioning head which engages from above in register rails of a prescribable register standard, by means of which at the same time a plurality of original films of a printing form with the Register rails can be positioned on the mounting base film or the printing plate in individually predeterminable positions and which has a locking and / or storage device by means of which the respective actual position of the at least one positioning head can be locked and / or stored.

The multiple monfeage register system according to the invention advantageously allows any X-Y coordinate to be approached exactly and to be locked or stored. This ensures that the films of the pages belonging to a printing form can be positioned and mounted without paper loss, adapted to any desired sheet format. The assembly is reduced because the print template films corresponding to the pages are already punched into the register system to hang and mount the films. Any adjustment is not necessary.

This advantageously reduces the assembly time and the assembly costs and increases the quality.

According to a preferred embodiment of the invention, the mounting device is set up for the simultaneous mounting of up to four artwork films from multiple pages, in particular exposed A4 double pages, which form one The printing form belongs to and has four positioning heads which can be moved and locked individually in an XY carriage system, each positioning head having a lowering device which allows the films inserted in the register strips to be raised and lowered in a direction perpendicular to the table plane up to the table height.

Thus, through the four separate positioning heads that can be moved independently of one another, the films, which each correspond to a double page and are attached to the register strips attached to the underside of the heads, can be placed in the arrangement specified for the printing form over a mounting base film placed on the table or also over a printing plate desired position and then be lowered to the level of the table top by the lowering device provided in each head.

A variable head trimming and also different distances of the individual double pages from the center of the sheet can advantageously be maintained during the positioning for each individual double page. The variability of the distances to the center of the sheet is particularly important for maintaining a pre or post fold. The preferred register standard in the multiple assembly register system according to the invention is the Heidelberg GTO standard. However, the multiple assembly register system according to the invention is not limited to this standard, since the register strips held on the underside of the heads are interchangeable. As a result, different register standards and also different print formats can advantageously be satisfied. The pages to be assembled can have, for example, DIN-A 3 format, the entire printing form having DIN-A 1 format.

The assembly table preferably has a light-transparent table top that can be illuminated from below, and vacuum channels are provided on the surface of the table top.

As a result, the mounting base film or the printing plate is held on the table surface, and the films positioned and arranged in the register system can be e.g. fix with adhesive tape on the surface of the assembly base foil.

In order to facilitate the release of the register strips from the punched registers of the films fixed on the mounting base film, the table top can have a lifting device which allows the table top to be raised and lowered in the Z direction by a predetermined height difference.

In addition to the fact that the positioning heads can be locked in the X and Y directions, measuring rulers that are firmly connected to the table top in the X and Y directions can be provided on the longitudinal edges of the table top, the positioning heads then having measuring marks with which the respective position of each positioning head can be displayed at least in one of the X or Y directions on the measuring rulers.

To carry out a semi-automatic positioning of the positioning heads, ie the individual films on the mounting base film or the printing plate to be exposed, the XY carriage system can be equipped with electromotive or pneumatic XY drive units, and each positioning head can have a locking switch that locks the head position approached.

As an alternative to the interlock switch, each individual positioning head can also be interlocked by an input command by means of a control device. With the help of the electromotive or pneumatic X-Y drive unit, a fine positioning by one hundredth is possible! Reach millimeters in the X and Y directions.

As an alternative to executing the mounting device with four individual positioning heads, the mounting device can be used for the simultaneous mounting of four exposed artwork films, e.g. of multiple pages can also be provided with only a single positioning head which can be moved and locked on an X-Y slide system. This head can also advantageously with a

Lowering device may be provided which enables the register strips to be raised and lowered in a direction perpendicular to the table plane up to the table height.

In the latter alternative embodiment, it is preferred if the carriage drive is controlled by digital control pulses from a digital control processor for moving the positioning head in the XY coordinate system, the positions to be approached and the locking thereof being specified by control commands from the control processor, in which case the Control processor has a memory (RAM) for storing at least position data. After positioning, assembling and fixing the films of a first color separation, for example cyan color separation on the basic assembly film, the latter is removed from the assembly table with the fixed films. In the case of the preferred embodiment of the mounting device with four positioning heads, the positioning heads remain in the locked position, and the films of the next color separation and each further color separation are then mounted and fixed together with the register strips in the same position on further basic mounting foils.

In the case of the version with only one mounting head, the positions reached during the first assembly are saved and the positioning head then moves to the stored positions when the further color separations are mounted, so that the films of the further color separations can be mounted and fixed in each case at the same position .

The multiple assembly register system according to the invention is described in more detail below with reference to the drawing. Show it:

1 schematically shows a plan view of an assembly device with four positioning heads;

2 shows a plan view of a mounting device according to the invention, in which only one mounting head is provided, together with a block diagram of a control processor; and 3 shows a schematic partial sectional view of a preferred embodiment of a positioning head.

In the assembly device shown in FIG. 1, for example, four double pages I, II, III and IV, perforated and exposed in the Heidelberg GTO register standard, are in A4 format, each double page then being in DIN A3 format by means of register perforation and Register rails 16 assembled and assembled into a printing form DIN A 1. A mounting base film 19 is placed on a table (not shown) with a table top that can be illuminated from below and has vacuum suction channels and is held by means of a vacuum.

Of course, instead of a transparent mounting base film 19, a printing plate to be exposed can also be placed directly on the table. In this case, an illumination illuminating the mounting device from above is also provided.

1 shows four positioning heads 15 which can be moved on an XY-slide system 11, 12, 13 in the XY direction, each positioning head 15 being able to be moved individually in the X direction and two positioning heads together in the Y direction. For assembly, the individual double pages I - IV, which have a register perforation in accordance with the Heidelberg GTO register standard, are hung in register rails 16 held on the underside of the heads 15 and then the heads are moved into the desired position and locked there. The register strips 16 shown in FIG. 1 are the register strips developed by Bacher for the Heidelberg GTO register standard with three Elongated register pins aligned in the X and Y directions. In FIG. 1 there are also center lines M1 and M2 and bleed distances b to by in each case of the master films I - IV corresponding to the double pages from the horizontally running center line M1 and distances V to V _{IV of} the individual double-sided master films from the vertically running center line M2. The distances b to by each indicate a measure for a variable head trimming, while the distances V to V _IV each indicate a measure for variable arc center distances.

It is easy to see that the multiple assembly register system according to the invention enables the distances b _j to b _IV and V _j to v _IV to be set independently of the center lines M _] _ and M, ..

The heads 15, as will be described below with reference to FIG. 3, have a locking switch and a lowering device for lowering the register strip to the level of the assembly table. The only schematically illustrated X-Y slide system 11, 12, 13 can contain electromotive and pneumatic drive units 12 at the corners of the slide system, the heads 15 and the slide crossbeams 11 running in the X direction preferably being driven via a toothed belt transmission. become. Suitable toothed belt transmissions for carriage systems are known.

The multi-axis mounting register system according to the invention preferably has measuring rulers on the table surface and the heads 15 carry marks which indicate their position on the measuring rulers. A millimeter grid film can also be inserted under the mounting base film in a customary manner, the table lighting then illuminating from below through the table top, the millimeter grid film, the mounting base film and the applied films.

In a preferred embodiment, the table top has a. Lifting device which allows the table top to be raised and lowered in the Z direction perpendicular to the X-Y table top plane by a predetermined height difference.

1 also shows punched edges 18 which have a printing plate for the printing press.

FIG. 2 shows an alternative embodiment of an assembly device of the multiple assembly register system according to the invention, the same print format and the same register standard as in FIG. 1 being shown. An X-Y slide system consists of X rails 21 and Y rails 22 and 23, which have drive units 28, with the aid of which a single positioning head 25 can be moved in the X and Y directions over the entire surface of the assembly table, not shown.

Since the use of a single positioning head 25 no longer allows the respective positions of the individual artwork films I-IV to be locked, the respective positions of the head 25 reached during assembly are stored in a RAM memory of a microprocessor control unit 30. The latter generates command and control signals which are sent to the drive units 22 and 28 and the positioning head 25 via an I / O interface and a line system be issued. Commercially available coding rulers or angle encoders can be used to measure the respective position of the positioning head 25.

With the embodiment of the multiple mounting register system according to the invention shown in FIG. 2, both the distances b _j to by to the center line M ^ as well as the distances V _j to V v to the center line M2 can be flexibly adjusted.

The microprocessor control unit 30 consisting of CPU, RAM, ROM and I / O units can also have a connection to a higher-level computer HOST, via which the microprocessor control unit 30 can receive and output higher-level position information and control commands.

Both of the embodiments of the multiple assembly register system according to the invention described above with reference to FIGS. 1 and 2. make it possible, starting from the positions of the positioning head 25 or the positioning heads 15 that have been approached and locked or stored in a basic assembly, for example a cyan printing template, to carry out the assembly of the following color printing templates with the same positions. However, it is also possible to make any necessary fine adjustments with regard to the positioning of the double pages I to IV when the further color printing templates are being installed.

A preferred embodiment of a positioning head, which can be used advantageously in the invention, is described below with reference to FIG. 3. The one in Fig. 3 Positioning head 15 shown consists of an upper handle part 31, on which a locking switch - 2 is provided, a body 36 with an opening 38, through which two toothed belts 39 running in parallel and an X-shaped rail 31 designed as a dovetail rail go. A lowering device 33, 34, 35, 40 and 41 is also provided on the body 36, which consists of a handle part 33, a stamp 34 attached to the handle part 33 and which can be raised and lowered with it and which is guided in the Z direction by a guide housing 40 , and a base plate 35. The base plate 35 can be pivoted about a pivot hinge 41, so that the register pins of the register strip fastened to the underside 42 of the base plate 35 can slide out of the film register holes better when the respective film is lowered onto the basic mounting film. A handle 43 is provided for pivoting the base plate 35.

The embodiment of the positioning head 15 according to the invention shown in FIG. 3 only allows the register bar to be raised and lowered manually by means of the lowering device described. Of course, a hydraulic or pneumatic cylinder-piston unit can also perform the lowering and lifting process. The base plate 35 has a holding device, not shown, for the register strip, which is so flexible that it can be used to hold any common type of register strip.

The position locking of the positioning head 15 takes place in the embodiment according to FIG. 3 by pressing the switch 32, whereby, for example, a magnetic brake is switched on and locked. The lock switch 32 is not necessary if the microprocessor control unit 30 shown in FIG. 2 automatically issues a locking command for the drive units.

Claims

1. Multiple assembly register system, in particular for the assembly of large-format printing templates in the printing preparation stage, with at least one exposed printing template film provided with register perforations on a mounting table in a predeterminable position in a table-fixed XY coordinate system on a mounting base sheet or a printing plate to be exposed is mounted, characterized in that an assembly device (10; 20) which can be moved at least in the X and Y directions above the table is provided and which has at least one positioning head (15) which engages in register rails (16; 26) of a prescribable register standard ; 25), by means of which a plurality of printing master films (I-IV) of a printing form with the register rails (16; 26) can be positioned on the mounting base film (19) or the printing plate in positions which can be specified individually and also a locking and / or or storage device through which the respective ge actual position of the at least one positioning head (15; 25) and thus the actual position of each of the artwork films (I-IV) to be assembled can be locked and / or stored.

2. Multiple assembly register system according to claim 1, characterized in that the mounting device (10) is set up for the simultaneous mounting of up to four exposed multiple pages, in particular double-sided films corresponding to a printing form, and that four positioning heads (15) can be moved individually on an XY slide system (11, 12, 13) and can be locked and each have a lowering device (33-35) which allows the register strips (16) to be raised and lowered with the artwork films in a direction (Z) perpendicular to the table plane (XY plane) up to the table height.

3. Multiple assembly register system according to claim 1 or 2, characterized in that the predeterminable register is matched to the Heidelberg GTO register strips.

4. Multiple assembly register system according to one or more of the preceding claims, characterized in that the assembly table has a light-transparent table top that can be illuminated from below, and that vacuum channels are provided on the surface of the table top, which are the mounting base film (19) or the

Vacuum the pressure plate onto the table surface.

5. Multiple mounting register system according to one or more of the preceding claims, characterized in that the table top has a Hubvor¬ direction that allows raising and lowering the table top in the Z direction by a predetermined height difference.

6. Multiple assembly register system according to one or more of claims 2 to 5, characterized in that on the longitudinal edges of the tabletop with this fixed measuring rulers are provided in the X and Y directions, and that the positioning heads (15) Have measuring marks with which the respective positions of the positioning heads (15) can be displayed on the measuring rulers at least in the X or Y direction.

7. Multiple assembly register system according to one or more of claims 2 to 6, characterized in that the XY carriage system (11, 12, 13) has electromotive or pneumatic XY drive units for moving the positioning heads, and that each positioning head (15) has a locking switch (32) which locks the head position that has been approached.

8. Multiple mounting register system according to claim 1, characterized in that the mounting device (20) is set up for the simultaneous mounting of up to four exposed multiple pages corresponding films that a single positioning head (25) on an XY slide system (21, 22nd , 23) can be moved and locked and has a lowering device which allows the register strips with the printing template films to be raised and lowered in a direction (Z) perpendicular to the table plane (XY plane) up to the table height.

9. Multiple assembly register system according to claim 8, characterized in that the carriage system is controlled by digital control pulses from a digital

Control processor (30) acted upon X-Y drive system ■ for moving the positioning head, the positions to be moved to the positioning head and the locking thereof by control commands from

Control processor (30) are specified, and that the control processor has a memory (RAN) for storing at least position data.