JP5816190B2 - Apparatus for printing a sheet-like printed material with printing ink or varnish and method for operating the apparatus - Google Patents

Description

  The present invention relates to an apparatus for printing a sheet-like object to be printed with printing ink or varnish, that is, a printing apparatus or varnish unit of a sheet-fed printing machine described in claim 1. The invention also relates to a method of operating such a device.

  The sheet printer has at least one device for printing a sheet-like substrate with printing ink or varnish. An apparatus for printing a sheet-like printed material with printing ink is called a printing device, and an apparatus for printing a sheet-like printed material with varnish is called a varnish unit.

  A printing device known in practice for a sheet-fed printing press has one plate cylinder, one transfer cylinder, one impression cylinder, one inking device and possibly a dampening device. . At least one printing plate, for example a printing plate, is arranged on the plate cylinder of the printing device, the printing ink using an inking device, and possibly the fountain solution using an existing dampening device, It can be applied on one printing plate mounted on a plate cylinder or on each printing plate. Accordingly, the inking device is a device that applies printing ink to one printing plate or each printing plate mounted on a plate cylinder. The plate cylinder rotates in contact with a transfer cylinder on which at least one transfer plate is mounted. The transfer cylinder rotates against the impression cylinder guiding the substrate to be printed while forming a printing gap for the sheet-like substrate to be printed. The plate cylinder of the printing apparatus is also referred to as a plate cylinder, and the transfer cylinder is also referred to as a rubber cylinder.

  A varnish unit of a printing press has at least one plate cylinder to which at least one varnish plate is attached, one impression cylinder which rotates in contact with the plate cylinder and forms a printing gap for a substrate to be printed together with the plate cylinder. One varnish plate mounted on the plate cylinder or one attaching device capable of applying varnish to each varnish plate is provided. Unlike a printing apparatus, in the case of a varnish unit, no transfer cylinder is placed between the impression cylinder and the plate cylinder.

  In a sheet-fed printing press that has at least one main drive, but does not have a direct drive for driving the plate cylinder of the printing apparatus with a dedicated motor, all cylinders and rollers of the printing apparatus are Driven from a plurality of gears meshing with each other from one main drive unit. The present invention is an apparatus for printing a sheet-like object to be printed with printing ink or varnish, configured as a printing apparatus or a varnish unit, and drives the cylinder or roller of the printing apparatus with a dedicated motor during operation. It relates to a device which does not have a direct drive to do so and therefore all cylinders and rollers of the device are driven from the main drive during the printing operation.

  In such an apparatus for printing a sheet-like substrate with printing ink or varnish, it is difficult to minimize the set-up time required to perform the set-up operation. However, in order to improve the efficiency of the sheet printing machine, it is necessary to shorten the setup time required for performing the setup operation. Accordingly, there is provided a new apparatus for printing a sheet-like substrate with printing ink or varnish, which can shorten the setup time in order to improve the efficiency of the sheet printing machine, and a method for operating the apparatus. It has been demanded.

Patent Document 1 discloses a first drive motor (main drive motor) for driving one impression cylinder, one transfer cylinder, and one plate cylinder in one drive train (main drive device) in a printing operation. An offset printing press drive device is disclosed. The apparatus further includes a second drive motor for driving the plate cylinder on which the printing plate material is placed in the image forming operation. The drive train of the apparatus has two gear levels, the first gear level is connected to the first drive motor, and one place formed by the transfer cylinder and the printing plate cylinder is always separated, On the other hand, the second gear level is constructed continuously without interruption and is connected to the second drive motor. A first switchable clutch is provided in the drive train for disconnecting the drive connection to the printing plate cylinder that forms the main drive. For this purpose, a first clutch is arranged on the shaft of the transfer cylinder which selectively connects or disconnects both gear levels on the drive side. A second clutch is disposed on the axis of the printing plate cylinder.
Since both clutches are closed during the printing operation, the moments from the first drive motor through the first gear level, through the closed first clutch, the second gear level and back to the first gear level respectively. Are fed to the shafts of the impression cylinder, transfer cylinder, printing plate cylinder and inking roller. At this time, the rotor of the second drive motor rotates together. In the image forming operation, since the first and second clutches are opened, the moment is supplied from only the second drive motor to the axis of the printing plate cylinder via the second gear level.

  Patent Document 2 discloses an apparatus for driving a printing unit having one plate cylinder, one transfer cylinder, one counter impression cylinder, and a first drive motor for driving these cylinders. . The drive train of the apparatus has two gear levels, the first gear level provided on the drive side for the plate cylinder and the transfer cylinder is connected to the first drive motor, the transfer cylinder and the counter pressure A second gear level for the cylinder is provided on the drive side, and a switchable clutch is disposed on the shaft of the transfer cylinder that selectively connects or disconnects both gear levels on the drive side. In the printing operation, when the clutch is closed, the moment is supplied from the first drive motor to both gear levels, so that the plate cylinder, the transfer cylinder, and the counter impression cylinder can be driven together. For example, in a setup operation such as printing plate exchange or rubber blanket exchange, the clutch is opened and the moment from the first drive motor is supplied only to the first gear level, so that the plate cylinder and transfer cylinder can be driven together. is there. In a further configuration, the second drive motor can be coupled to the second gear level. Thereby, the moment can be additionally supplied to the second gear level in the operating mode with the clutch closed. Alternatively, when the clutch is open, the moment can be supplied from the second drive motor to the gear of the counter impression cylinder via a gear that is rotatably supported by the shaft of the transfer cylinder, The counter impression cylinder can be rotated separately.

German patent No. 10348030 specification German patent No. 10046368

  An object of the present invention is to provide a new apparatus for printing a sheet-like substrate with printing ink or varnish, and a method for operating the apparatus, so that setup time can be minimized. is there.

  This problem is solved by the device according to claim 1. The apparatus of the present invention has at least the following features. a) at least one fixed gear mounted on the shaft of the first gear, i.e. the impression cylinder (sheet guide cylinder), one idle gear mounted on the shaft of the printing cylinder (printing cylinder), and A fixed gear mounted on the roller shaft of the attaching device is disposed in the first gear level and meshes with each other in the first gear level, forming a closed gear train. b) Mounted on the shaft of the plate cylinder is a second gear arranged in the second gear level and configured as a fixed gear. c) The plate cylinder is driven on the drive side via a switchable clutch on the drive side in order to drive the plate cylinder not via the main drive to parallel the set-up work but via the auxiliary drive. And can be connected to an auxiliary drive.

  In the apparatus of the present invention for printing a sheet-like substrate with printing ink or varnish, the plate cylinder (printing plate cylinder) of the apparatus is connected to the main drive device by operating a switchable clutch. Or when the plate cylinder is disconnected from the main drive, the plate cylinder is connectable to or connected to the auxiliary drive. By separating the plate cylinder from the main drive and connecting the plate cylinder to the auxiliary drive, it is possible to parallel the setup operations in order to reduce or minimize the required setup time. Even when the plate cylinder is disconnected from the main drive, the application device for applying printing ink or varnish to one or each printing plate or varnish mounted on the plate cylinder has its own phase position. Therefore, it is not necessary to correct the phase position for the attaching device after the setup operation is completed, thereby further shortening the setup time.

  The method of the invention for operating a printing device is defined in claim 10.

  Preferred developments of the invention can be seen from the dependent claims and the following description. Embodiments of the present invention will be described in detail with reference to the drawings, but are not limited thereto.

1 is a partial view of an apparatus of the present invention for printing a sheet-like substrate, configured as a printing apparatus, in a first embodiment of the present invention. FIG. FIG. 6 is a partial view of an apparatus according to the present invention for printing a sheet-like printed material configured as a printing apparatus in a second embodiment of the present invention. FIG. 6 is a partial view of an apparatus of the present invention for printing a sheet-like substrate, configured as a varnish unit, in a third embodiment of the present invention.

  The present invention relates to an apparatus for printing a sheet-like object to be printed with printing ink or varnish, that is, a printing apparatus or varnish unit of a sheet printing machine. Various embodiments of the present invention will now be described in detail with reference to FIGS.

  FIG. 1 shows a portion of an apparatus configured as a printing apparatus 1 for printing a sheet-like printed material with printing ink. 1 includes a single impression cylinder 2, a transfer cylinder 3 (rubber blanket cylinder) rotating in contact with the impression cylinder 2, a plate cylinder 4 (printing plate cylinder) rotating in contact with the transfer cylinder 3, And a plurality of rollers of the inking device 5 and preferably the dampening device 6, the roller 7 of the inking device 5 or the dampening device 6 is shown in FIG. 1.

  As already mentioned, the impression cylinder 2 and the transfer cylinder 3 for guiding the sheet-like substrate are rotated in contact with each other while forming a printing gap 8 for the sheet-like substrate to be printed. ing. On the transfer cylinder 3, at least one transfer plate such as a rubber blanket is attached, and the transfer cylinder 3 is also called a rubber cylinder. Similarly, the transfer cylinder 3 and the plate cylinder 4 are also rotating in contact with each other, and at least one printing plate such as a printing plate is mounted on the plate cylinder 4. Also called plate cylinder.

  When printing a print job, all of the cylinders 2, 3, 4 and the roller 7 of the printing apparatus 1 are driven by a plurality of gears from a main drive of a sheet-fed printing machine not shown in FIG. Can be driven through. A moment is preferably supplied to the gear train of the first gear level 17 from at least one drive motor of the main drive.

  In the present invention, on the first gear of FIG. 1, that is, the fixed gear 10 mounted on the shaft 9 of the impression cylinder 2, the fixed gear 12 mounted on the shaft 11 of the transfer cylinder 3, and the shaft 13 of the plate cylinder 4. The mounted idler gear 14 (that is, idler gear 14 is disposed on the shaft 13 so as to be freely rotatable), and the fixed gear 16 mounted on the shaft 15 of the roller 7 is a first gear level 17. The first gears of the first gear level 17 are in mesh with each other while forming a closed gear train.

  Therefore, the fixed gear 10 attached on the shaft 9 of the impression cylinder 2 meshes with the fixed gear 12 attached to the shaft 11 of the transfer cylinder 3. The fixed gear 12 attached on the shaft 11 of the transfer cylinder 3 meshes with the idle gear 14 attached on the shaft 13 of the plate cylinder 4. The idle gear 14 further meshes with a fixed gear 16 mounted on the shaft 15 of the roller 7. The gears 10, 12, 14, 16 mounted in the first gear level 17 thus form a closed gear train in the first gear level 17.

  In the present invention, mounted on the shaft 13 of the plate cylinder 4 is a second gear 19 arranged in the second gear level 18 and configured as a fixed gear 19. In the present invention, an auxiliary drive device 20 and a switchable clutch 21 are also provided, and the plate cylinder 4 is not connected via the main drive device but the auxiliary drive device 20 in order to parallelize the setup work. For driving, the plate cylinder 4 can be disconnected from the main drive on the drive side via a switchable clutch 21 and can be connected to the auxiliary drive 20.

  Regardless of whether the plate cylinder 4 is disconnected from the main drive on the drive side or connected to the main drive via a switchable clutch 21, all gears 10 of the first gear level 17, 12, 14, 16 are always connected to the main drive on the drive side. In this embodiment, a moment is supplied to the fixed gear 10 by the main drive device.

  In the embodiment of FIG. 1, a switchable clutch 21 is assigned to the plate cylinder 4, and an idler gear 14 mounted on the shaft 13 of the plate cylinder 4 and also mounted on the shaft 13 of the plate cylinder 4. It is comprised between the fixed gears 19. Therefore, the first engagement element of the switchable clutch 21 is on the idle gear 14 mounted on the shaft 13 of the plate cylinder 4, and the second engagement element of the switchable clutch 21 is on the shaft 13 of the plate cylinder 4. At this time, when both engagement elements of the switchable clutch 21 mesh with each other, the switchable clutch 21 is closed, and both engagement elements of the switchable clutch 21 are mutually connected. If it does not mesh, the switchable clutch 21 is opened.

  When the switchable clutch 21 is closed, the plate cylinder 4 is connected to a main drive (not shown) on the drive side via the switchable clutch 21. On the other hand, when the switchable clutch 21 is open, the plate cylinder 4 is disconnected from the main drive on the drive side and can be connected to or connected to the auxiliary drive 20.

  In the embodiment illustrated in FIG. 1, a second gear 22 is assigned to the auxiliary drive device 20, and the second gear 22 is supported by a drive shaft 23 of the auxiliary drive device 20. Are arranged in a second gear level 18 together with a fixed gear 19 mounted on the shaft 13 of the plate cylinder 4. In the embodiment shown in FIG. 1, a switchable clutch 24 is configured between the drive shaft 23 and the gear 22 of the auxiliary drive device 20. When the clutch 24 is closed, the auxiliary drive device 20 is driven via the gear 22 on the drive side. When the clutch 24 is opened by being connected to the fixed gear 19 of the plate cylinder 4, the auxiliary drive unit 20 is disconnected from the plate cylinder 4 on the drive side.

  FIG. 2 shows a printing apparatus 1 ′ according to a second embodiment of the present invention. In order to avoid unnecessary repetition in the embodiment of FIG. 2, the details of the embodiment of FIG. Will only describe the different details. The same symbols are used for the same components.

  In addition to the cylinders 2 to 4 and the roller 7 already described in the embodiment of FIG. 2, and in the gears 10, 12, 14, 16 and the second gear level 18 mounted in the first gear level 17. In addition to the gears 19, 22 attached to the second gear, a further second gear is provided, which is mounted in the second gear level 18, ie in FIG. 2 the transfer cylinder. The idler gear 25 is mounted on the third shaft 11. At this time, the idle gear 25 attached on the shaft 11 of the transfer cylinder 3 is fixed to the gear 22 of the auxiliary drive device 20 attached to the drive shaft 23 and also to the fixed gear 19 attached to the shaft 13 of the plate cylinder 4. Also bite. In the embodiment of FIG. 2, the switchable clutch 21 is configured between a fixed gear 12 mounted on the shaft 11 of the transfer cylinder 3 and an idle gear 25 also mounted on the shaft 11 of the transfer cylinder 3. At this time, the first engagement element is assigned to the fixed gear 12 and the second engagement element is assigned to the idle gear 25.

  In the embodiment of FIG. 2, when the clutch 21 is closed, the plate cylinder 4 is connected to a main drive device (not shown) via a switchable clutch 21 on the drive side. On the other hand, when the switchable clutch 21 is open, the plate cylinder 4 is separated from the main drive device on the drive side in order to carry out the setup operation of the printing device in parallel to minimize the setup time. The auxiliary drive device 20 can be connected.

  FIG. 3 shows an embodiment of the apparatus of the present invention for printing a sheet-like substrate to be varnished, configured as a varnish unit 26. The varnish unit 26 of FIG. An impression cylinder 27 for guiding a paper-like substrate, a printing cylinder 29 rotating in contact with the impression cylinder 27 while forming a printing gap 28, and a printing plate attached to the printing cylinder 29 or a varnish on each printing plate It has the apparatus 30 for attaching. FIG. 3 shows a so-called varnishing roller 31 of the apparatus 30 that rotates in contact with the plate cylinder 29. In the printing operation, all the cylinders 27 and 29 and the roller 31 of the varnish unit 26 can be driven by a main drive device (not shown) via gears. For example, a moment can be supplied from the main drive device to the fixed gear 34 of the impression cylinder 27.

  3, the first gear, that is, the fixed gear 34 attached to the shaft 33 of the impression cylinder 27, the idle gear 36 attached to the shaft 35 of the plate cylinder 29, and the shaft 37 of the varnish pulling roller 31 are attached. A fixed gear 38 is mounted in the first gear level 32.

  These first gears 34, 36, 38 mounted in the first gear level 32 mesh with each other while forming a closed gear train in the first gear level 32, and the plate cylinder 29 of the varnish unit 26 is engaged with each other. The idle gear 36 attached to the shaft 35 meshes with the fixed gear 34 attached to the shaft 33 of the impression cylinder 27 and the fixed gear 38 attached to the shaft 37 of the varnish pulling roller 31.

  The shaft 35 of the plate cylinder 29 is also configured as a fixed gear 39, mounted in the second gear level 40, in addition to the gear 36 configured in the first gear level 32, configured as an idle gear 36. The arranged second gear is arranged. Also in the second gear level 40, a gear 43 is attached to the drive shaft 41 of the auxiliary drive device 42, and a switchable clutch 44 is preferably formed between the gear 43 and the drive shaft 41. Has been.

  The varnish unit 26 has a switchable clutch 45 assigned to the plate cylinder 29, and the plate cylinder 29 of the varnish unit 26 can be connected to the main drive device via the clutch 45. It can be disconnected from the main drive. In FIG. 3, the clutch 45 that can be switched at this time is configured between an idle gear 36 attached to the shaft 35 of the plate cylinder 29 and a fixed gear 39 also attached to the shaft 35 of the plate cylinder 29. Each of the gears 36 and 39 is assigned one engagement element of the switchable clutch 45. When the switchable clutch 45 is closed, the plate cylinder 29 is connected to a main drive device (not shown) via the switchable clutch 45 and is disconnected from the auxiliary drive device 42. On the other hand, when the switchable clutch 45 is open, the plate cylinder 29 is disconnected from the main drive device (not shown) on the drive side and can be connected to the auxiliary drive device 42 or connected. By doing so, the plate cylinder 29 is driven not via the main drive unit but via the auxiliary drive unit 42 in order to parallelize the setup work.

  It is common to all the embodiments of FIGS. 1 to 3, that is, the printing apparatuses 1 and 1 ′ of FIGS. 1 and 2 and the varnish unit 26 of FIG. 4 or 27, 29 and all of the rollers 7 or 31 are driven through a plurality of gears from a main drive device (not shown). At this time, the first gears 10, 12, 14, 16 , Or 34, 36, 38 are arranged in the first gear level 17 or 32 and mesh with each other in the respective first gear level 17 or 32, forming a closed gear train.

  At least the shaft 13 or 35 of the plate cylinder 4 or 29 is fitted with a second gear, which is configured as a fixed gear 19 or 39, mounted in the second gear level 18 or 40. The plate cylinder 4 or 29 of the varnish unit 26 can be disconnected from the main drive device (not shown) via the switchable clutch 21 or 45 and can be connected to the auxiliary drive device 20 or 42.

  The switchable clutch 21 or 45 is preferably assigned to the plate cylinder 4 or 29 and is arranged between gears 14, 19 or 36, 39 attached to the shaft 13 or 35 of the plate cylinder 4 or 29, If the device according to the invention is configured as a printing device, this clutch 21 can also be assigned to the transfer cylinder 3, in which case the shaft 11 of the transfer cylinder 3 also has two gears 12, 25, i.e. the first. A fixed gear 12 mounted in the gear level 17 and an idle gear 25 mounted in the second gear level 18 are mounted.

  As already mentioned, all cylinders 2, 3, 4 or 27, 29 and rollers 7 or 31 of the printing device 1, 1 'or varnish unit 26 in the printing operation for carrying out a print job are removed from the main drive. Driven, so that each switchable clutch 21 or 45 is closed and held closed. When the print job is finished, each switchable clutch 21 or 45 is opened to carry out the setup work in parallel, whereby the respective plate cylinder 4 or 29 is disconnected from the main drive, not shown. . At the same time that the switchable clutch 21 or 45 is opened, or immediately after it is opened, the plate cylinder 4 is connected to the auxiliary drive device 20 or 42 on the drive side, at this time in order to carry out the setup work in parallel. In addition, the plate cylinder 4 or 29 is driven from the auxiliary driving device 20 or 42, and all the other cylinders 2, 3, or 27 and the rollers 7 or 31 are driven from the main driving device.

  As already mentioned, the connection of the auxiliary drive device 20 or 42 to the plate cylinder 4 or 29 is achieved by the drive shaft 23 or 41 of the auxiliary drive device 20 or 42 and the gear 22 or 43 bearing on the drive shaft 23 or 41. This is done by closing each clutch 24 or 44 constructed between the two. When the setup work to be carried out in parallel is completed, the plate cylinder 4 or 29 is then disconnected again from the auxiliary drive 20 or 42 on the drive side by opening the corresponding clutch 24 or 44, respectively, When the clutch 21 or 45 is closed, it is connected again to the main drive on the drive side.

  As shown in FIGS. 1 and 2, when the apparatus of the present invention is configured as the printing apparatus 1 or 1 ′, the printing plate replacement of the plate cylinder 4 is performed by using the auxiliary driving device 20 in order to shorten the setup time. In parallel with this, the main drive unit is used to perform a cleaning process in the transfer cylinder 3 and / or a cleaning process in the impression cylinder 2 and / or a cleaning process in the inking device 5 and / or In the dampening device 6, the cleaning process can be performed, and / or the transfer plate 3 can be replaced and / or the ink device 5 can be replaced.

  As shown in the embodiment of FIG. 3, when the apparatus of the present invention is configured as a varnish unit 26, the auxiliary drive device 42 is used to replace the varnish plate in the plate cylinder 29 in order to perform the setup work in parallel. At the same time or in parallel, the main drive unit is used to perform the cleaning process in the impression cylinder 27 and / or the cleaning process in the attaching apparatus 30 and / or the varnish exchange in the attaching apparatus 30. Can do.

  To this end, preferably at least the plate cylinder from the transfer cylinder and / or the application roller from the plate cylinder and / or the transfer cylinder from the impression cylinder in order to perform the set-up operations in parallel. And the roller is moved to the pressure-off position.

  As already mentioned, regardless of whether the plate cylinder 4 or 29 is disconnected or connected to the main drive on the drive side via the respective switchable clutch 21 or 45, the first gear level All the first gears 10, 12, 14, 16 or 34, 36, 38 of 17 or 32 remain connected to the main drive on the drive side, so that printing ink and possibly fountain or The varnishing device 5, 6 or 30 can ensure that the phase position remains changed. Thereby, after performing the set-up operation, these attaching devices 5, 6 or 30 do not need to correct their phase positions.

  The switchable clutch 21 or 45 can be implemented as an index switching clutch or a fixed-point clutch that engages only at one angular position, or as a gear clutch that engages at multiple angular positions. However, the switchable clutch 21 or 45 is sufficiently rigid with respect to torsion, regardless of its specific structure, thereby causing register mark fluctuations that adversely affect print quality during printing. Avoided.

  Unlike the embodiment shown in FIGS. 1 to 3, the clutch 24 or 44 may not be provided. In this case, preferably all the auxiliary drive devices 20, 42 are implemented so as to be movable together with the gears 22 or 43 attached to the drive shaft 23 or 41, so that the gears of the auxiliary drive devices 20 or 42 are achieved. By moving 22 or 43 together with the gear 19 or 25 or 39, it is engaged or unengaged.

DESCRIPTION OF SYMBOLS 1, 1 'printing apparatus 2 Impression cylinder 3 Transfer cylinder 4 Plate cylinder 5 Attachment apparatus / Ink apparatus 6 Attachment apparatus / Dampening apparatus 7 Roller 8 Printing gap 9 Shaft 10 1st gear / fixed gear 11 Shaft 12 1st gear / fixed Gear 13 Shaft 14 First Gear / Play Gear 15 Shaft 16 First Gear / Fixed Gear 17 First Gear Level 18 Second Gear Level 19 Second Gear / Fixed Gear 20 Auxiliary Drive 21 Switchable Clutch 22 Second Gear 23 Drive shaft 24 Clutch 25 Second gear / play gear 26 Varnish unit 27 Impression cylinder 28 Printing gap 29 Plate cylinder 30 Attachment device 31 Varnishing roller 32 First gear level 33 Shaft 34 First gear / fixed gear 35 Shaft 36 First gear / Play gear 37 shaft 38 first gear / fixed gear 39 second gear / fixed gear 40 second gear Level 41 Drive shaft 42 Auxiliary drive 43 Second gear 44 Clutch 45 Switchable clutch

Claims (7)

An apparatus for printing a sheet-like printed material with printing ink or varnish, an impression cylinder for guiding the printed material to be printed, a plate cylinder on which at least one printing plate or varnish plate is placed, Having an attaching device comprising at least one roller capable of applying printing ink or varnish to one or each printing plate or varnish attached to the plate cylinder, in which all cylinders and rollers are In an apparatus that can be driven from one main drive through a plurality of gears,
a) a first gear, ie at least one fixed gear (10; 34) attached to the shaft (9; 33) of the impression cylinder (2; 27), the shaft (13) of the plate cylinder (4; 29) 35) one idle gear (14; 36) attached to 35) and one fixed gear attached to the shaft (15; 37) of the roller (7; 31) of the attaching device (5, 6; 30) (16; 38) are disposed in the first gear level (17; 32) and mesh with each other in the first gear level (17; 32) forming a closed gear train;
b) a second gear, arranged as a fixed gear (19; 39), arranged in the second gear level (18; 40) on the shaft (13; 35) of the plate cylinder (4; 29) Is installed,
c) The plate cylinder (4; 29) is a switchable clutch for driving the plate cylinder not via the main drive unit but via the auxiliary drive unit in order to perform the setup work in parallel. It can be disconnected from the main drive on the drive side via (21:45) and can be connected to the auxiliary drive (20:42) via a switchable clutch (24; 44). ,
The features,
The apparatus is configured as a printing apparatus (1 ′), a transfer cylinder (3) is disposed between the impression cylinder (2) and the plate cylinder (4), and the transfer cylinder should be printed Rotating in contact with the impression cylinder while forming a printing gap (8) for the substrate, attached to the shaft (11) of the transfer cylinder (3) on the one hand in the first gear level (17) A first gear configured as a fixed gear (12) is attached, and on the other hand, a second gear configured as an idler gear (25) is installed in the second gear level (18). The plate gear and the second gear of the transfer cylinder mesh with each other, and the clutch (21) is connected to the idler gear (25) attached to the shaft (11) of the transfer cylinder (3) and the fixed gear. (12) characterized in that it is configured between Equipment.   Regardless of whether the plate cylinder (4; 29) is disconnected from the main drive on the drive side via the switchable clutch (21; 45) or connected to the main drive, Device according to claim 1, characterized in that all the first gears of the first gear level (17; 32) are always connected to the main drive on the drive side.   When the switchable clutch (21; 45) is closed, the plate cylinder (4; 29) is connected to the main drive via the switchable clutch, and the clutch (21; 45). 3. The device according to claim 1, wherein the plate cylinder is disconnected from the main drive and can be connected to the auxiliary drive (20; 42) when open. When the switchable clutch (21; 45) is open, the auxiliary drive (20; 42) is connected to the second gear level (18) via a gear (22; 43) assigned to the auxiliary drive. 40) one of the second gears, i.e. either the fixed gear (19; 39) attached to the shaft of the plate cylinder or the idle gear (25) attached to the shaft of the transfer cylinder An apparatus according to any one of claims 1 to 3 , characterized in that: The plate cylinder when the plate cylinder (4; 29) is disconnected from the main drive device and connected to the auxiliary drive device (20; 42) via the switchable clutch (21; 45). A printing plate change or a varnish plate change is carried out at the same time, and at the same time or in parallel, a washing step is carried out at the attaching device (5, 6; 30) and / or the impression cylinder (2; 27). characterized apparatus according to any one of claims 1 4. 6. The apparatus according to claim 5, wherein when the apparatus is configured as a printing device (1; 1 '), an inking device (at the same time or in parallel with the printing plate exchange in the plate cylinder (4)). 5) a cleaning step and / or a dampening device (6) a cleaning step and / or a transfer cylinder (3) and / or a transfer plate exchange in the transfer cylinder (3). 6. The device according to claim 5 , characterized in that can be implemented. A method for operating an apparatus for printing a sheet-like substrate with printing ink or varnish according to one or more of claims 1 to 6 , comprising at least the following steps:
a) All cylinders and rollers are driven by the main drive in a printing operation to print a print job, so that the switchable clutch (21; 45) is kept closed;
b) after completion of the print job, the switchable clutch (21; 45) is opened in order to carry out the setup work in parallel, whereby the plate cylinder is disconnected from the main drive on the drive side;
c) When the switchable clutch (21; 45) is opened or immediately after the switchable clutch (21; 45) is opened, the plate cylinder is switched on the drive side by the switchable clutch ( 24; 44), the plate cylinder is driven from the auxiliary drive when the set-up operation is carried out in parallel, and all other cylinders and rollers are connected from the main drive. Driven steps;
d) After the set-up work to be carried out in parallel is completed, the plate cylinder is disconnected from the auxiliary drive on the drive side and the main clutch again on the drive side by closing the switchable clutch (21; 45). Coupled to the drive device;
A method characterized by comprising:

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