JP2007090881A - Device for performing roller interchange, and printer equipped with this device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a solution that the interchange of a coating roller or other interchangeable rollers in a sheet printer or a sheet finishing processing machine is performed by an especially suitable method. <P>SOLUTION: This roller interchanging device is equipped with a lifting arm device, and a bearing device. In this case, the lifting arm device is equipped with a left lifting arm structure and a right lifting arm structure for moving an interchangeable roller in a space between a working position and a housing position. The bearing device is used to bearing-support the lifting arm device in a manner to be turnable with a turning shaft as the pivot. The turning shaft is arranged to be approximately in parallel with the rotating shaft of the interchange objective roller, and the turning shaft passes an intermediate range which is located in the vertical direction between the working position and the housing position of the interchangeable roller. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an apparatus for exchanging rollers by a lifting device having a left lifting arm structure and a right lifting arm structure in an inking device or a coating unit of a sheet-fed printing machine. This apparatus performs movement of a roller attached in a replaceable state between a work position and a storage position in a printing machine, and in particular, takes in and out to replace the roller. The present invention further relates to a printing press provided with such a roller exchange device.

  From patent document 1, a device is known in which an anilox roller of a coating unit of a printing press is replaced by a lifting arm portal. Through this lifting arm portal, the anilox roller is grasped in the range of its working position and then lifted vertically. The anilox roller so gripped and lifted then moves horizontally in a range between the side frames of the printing press and is stored in the first or adjacent second storage position. .

  From Patent Document 2, a coating unit for a rotary press having a rotary magazine provided with a plurality of anilox rollers is known. The rotary magazine is provided with a cable device, and the anilox roller is lowered from the downward magazine case via the cable device, and is partially manually set at the working position.

From Patent Document 3, a chamber doctor blade / varnishing device having a rotary magazine is known, and a plurality of anilox rollers are rotatably supported by the rotary magazine. The roller storage portion of the rotary magazine forms a working area for the individual chamber rollers. By appropriately swiveling the rotary magazine, it is possible to move one anilox roller of the rotary magazine to one working position, respectively, at which the anilox roller is assigned to the assigned coating plate Touch the torso.
German Patent No. 19962425B4 specification German Patent Publication No. 19919389A1 German Patent No. 19753136C2 German Patent No. 199624421C1 German Patent No. 19962443C1

  The object of the present invention is to provide a solution in which the replacement of coating rollers or other replacement rollers in a sheet-fed printing machine or sheet finishing machine can be performed in a particularly preferred manner.

This problem can be solved by the roller replacement device of the present invention for performing roller replacement in an inking device or a coating unit of a sheet-fed printing machine,
-A lifting arm device having a left lifting arm structure and a right lifting arm structure for storing the replacement roller between the working position and the storage position; and-the lifting arm device with respect to the rotation axis of the roller to be replaced. A bearing device is provided for supporting the bearing so as to be pivotable about a pivot shaft arranged substantially in parallel. Move through an intermediate range at
This makes it possible to provide an in-machine roller movement system that exhibits a large operating range in a small required space in a suitable manner. The device according to the invention can preferably be implemented as a relatively rigid moving system, and the roller to be replaced can be carefully lifted from the working position or lowered to this working position with full automation. The arm lift stroke that can be realized by the lifting arm structure can be further moved, in particular, the roller can be lifted by using the same stroke amount by appropriately turning the lifting arm structure. Particularly preferably at this time, the rollers are accommodated in or removed from the upper area of the coating unit or printing device. In this way, in particular, it is possible to use the upper range of the printing device or the coating unit that is originally accessible as a roller delivery range. It can be set manually and can be kept open in this range.

  In a particularly desirable embodiment of the invention, the bearing device for bearing support of the lifting device can be attached to a side frame of a printing press. This mounting is performed by a mounting flange structure, which can be mounted through a part provided on the standard frame side, particularly through a positioning hole and a bolt hole provided as standard. It is. The roller changer itself can be implemented as a sufficiently closed component, as a retrofit device of the machine, such as an “upgrade package”, through the interface that is suitable for the installation technology, for both side frames. It can be installed later in a range in between.

  The left lifting arm structure and the right lifting arm structure can be preferably configured such that the radial distance from the pivot axis of the replacement roller can be changed. The pivot axis is preferably above the working position of the replacement roller. The left lifting arm structure and the right lifting arm structure can be configured such that the roller to be replaced is retracted in order to take out the roller to be replaced from above. Furthermore, the left lifting arm structure and the right lifting arm structure can be advanced radially with respect to the pivot axis in order to set the replacement roller in the working position.

  The left and right lifting arm devices are provided with a grip structure, in particular a grip head, for gripping the replacement roller in the region of the shaft end, in particular at the bearing journal at the shaft end. Each of the left and right lifting arm devices can constitute a part of a star-shaped lifting arm having a plurality of arms.

  Since this star-shaped lifting arm can be provided with two lifting arm structures that are arranged in diameter with respect to each other, it is possible to simultaneously handle a roller that is inserted for replacement and a roller that is output for replacement. The star lifting arm can also be provided with other lifting arm structures, in particular a three-arm or four-arm structure. The roller exchange device is controlled so that a plurality of rollers are carried by this device at least in the phase, and in some cases relayed and stored.

  The lifting arm is implemented as a multi-stage telescoping cylinder, according to one particularly preferred embodiment of the invention. The telescope cylinder is connected to a star-shaped lifting arm or central hub device, but preferably the outer cylinder is in the area of the inner cylinder connection, whereas the piston rod in the outer cylinder is outside It is guided so that it can move toward. This ensures particularly high bending stress resistance and rigidity in the turning direction of the manipulator system.

  The telescoping cylinder can be implemented as a hydraulic cylinder that operates with a pressurized medium, in particular hydraulic oil. As an alternative or in combination with this, the telescope cylinder can also be implemented as a screw cylinder, in particular a ball screw cylinder. The cylinders of the lifting arm system are preferably synchronized by a synchronizer so that the corresponding rollers do not tilt or bend unacceptably upon lifting or lowering. This synchronization is preferably achieved with a mechanical connection system such as a screw, drive chain, cog belt or rod. As an alternative, it is also possible to capture the lifted state of the roller or the current radial lift of the respective arm in a measuring technique and to perform a lifting correction based on the control-technical component.

  The lifting arm can also be implemented as a joint arm, in particular a bending joint or shear joint arm. Bending can take place in the axial plane containing the pivot axis of the system. The lifting arm device can also be implemented in such a way that the bending of the lifting arm takes place in a radial plane with respect to the pivot axis of the lifting arm system, respectively.

The exchange device can be controlled so that the lifting and pivoting movements are carried out overlapping each other at least within the phase. Each roller gripped by the lifting arm system is now moved over a guide groove optimized for its path of travel. The route of the guide groove is optimized in consideration of the inertia force and the required time as well as the criterion of collision avoidance.
As an alternative and as a control technology that can be performed at a lower cost, the system first moves only the rollers to be handled, respectively, in the radial direction with respect to the swivel axis by means of the lifting arm system with grippers. It is also possible to operate so that only the gripped roller turns. The movement is preferably started with a soft start to avoid excessive shock during start and braking.

  A sheet-fed printing machine can be made based on the above-described concept of the present invention relating to a machine-equipped roller changer. The sheet-fed printing press preferably includes a bearing device for bearing the replacement roller in the working position, and this bearing device is equipped with a roller mounting device, which is optional. In the mount position, the replacement roller is mounted in a rotatable state in its working position, and can be removed from the bearing device in the release position.

  By adopting such a configuration of the bearing device, the roller replacement can be completely automated. The bearing device can be implemented as a safety bearing with a cantilever bearing cradle. Details are known from US Pat. The roller and attached bearing or mounting device can also be mounted by means of a bracket that is movable in the axial direction, a lock bushing, or other gripping structure each attached to the shaft end of the roller.

  In the lifting arm system, in particular the gripper device provided for gripping the roller of the system also allows the gripper device to operate the roller mounting device provided for mounting the roller in a working position. It is possible to configure. The lifting arm system is therefore equipped with a locking and unlocking device by which the mounting device can be operated. The lifting arm system can be equipped with a drive to rotate the roller in a specific direction. Such an auxiliary drive can be incorporated into the printing press as a separate component from the lifting arm system.

  The roller gripper device of the lifting arm system may be configured to include a grip pin portion that plugs into one opening on the radius of the roller to be replaced and temporarily locks therein. Such a configuration of the roller gripper device is described in US Pat.

  As an alternative to the aforementioned coupling part, the roller gripper device can also be configured such that it grips the roller from the circumference or from the bottom on the circumference side in the range of the shaft end or end pin. In this coupling device, the roller can be gripped without particularly considering the rotational position of the roller.

  With this system, the roller replacement system of the present invention can be configured to move the roller between the working position and the storage position by controlling the guide groove. At this time, the roller is temporarily moved to an intermediate position by controlling the guide groove, and the roller can access the cleaning device at this position, so that it is possible to perform intermediate cleaning of the roller before moving the roller to the storage position. is there. It is also possible to automatically perform preliminary cleaning of the roller to be replaced, at which time the roller moves to an intermediate position used for preliminary cleaning before moving to the working position. , Especially dusted and cleaned.

  The apparatus of the present invention can be configured to handle not only the roller to be replaced but also other functional components of the printing press with respect to the gripper device provided on the lifting arm. The device according to the invention can be configured in particular so that it can be used to handle a cleaning device, in particular a cleaning module or other components of the coating unit, such as a chamber doctor blade device, etc., in a printing press or can be moved to a release position, for example. it can. It is also possible to have a plurality of lifting arms, which have different gripper or handling heads adapted to the respective system component to be handled.

  The storage position can be a delivery position that is located within or before the roller storage range. The roller storage area is preferably in the upper area of the printing press where it is accessible to the user. The roller storage area is in particular above the upper part of the machine panel. In this storage range, a tank device for collecting the medium overflowing from the roller should be provided. A movement / magazine device can be provided within the roller storage range, in which the roller is stored as determined and moved to a gripped position. The guide groove space with access to the storage area and moving structure can be protected by the detection device, so that for example when the user enters the monitoring range or touches in particular, a warning signal is issued or the exchange device stops. To do. This detection device can be realized by using visual means, in particular a light barrier, a thermal imaging system or a proximity sensor. Instead of completely shutting down the system leading to danger, it is also possible to change the operating mode, for example to reduce the speed of movement of moving components, or to make it a more sensitive stop criterion, for example. Indication means are provided to inform the user that the user is approaching or, in some cases, within the monitoring range, and after the user leaves the monitoring range, The operation mode can also be started.

  The roller can comprise an automatically readable code or in particular an optically or other electromagnetically readable data medium from which the roller specific information is read or possibly written. A read or write head provided for data transfer can be incorporated into the apparatus of the present invention and thereby set the write head in the proper position.

  The pivoting drive of the lifting arm system can be implemented so that the lifting arm system can be pivoted alternately or continuously in the same direction. The turning drive is preferably controlled by a program in a process that can be selected according to the situation. The switching device can also be controlled from the machine control center. As an alternative or in combination with this means, it can also be controlled around the corresponding printing device or coating unit. Especially when controlling in the vicinity, the flow of the individual movements, in particular the pivoting of the lifting arm system, the lowering of the roller to the working position or the lifting from the working position and the unlocking of the roller mount, the operational flow on the operator side visually It can be done slowly while being able to intervene in some cases.

  FIG. 1 shows a roller exchanging device for exchanging the exchanging roller 1 in the coating unit 2 of the sheet printing machine, here implemented as an anilox roller.

  The sheet printing machine is provided with a transfer cylinder 5 which cooperates with a sheet feeding table 3, a pre-gripper 4 and here a cylinder 6 of double size in a known manner. The cylinder 6 is in contact with the coating plate cylinder 7. The sheet coated with the coating plate cylinder 7 is transferred from the cylinder 6 to the drum 8. The running direction of the sheet is indicated by a small arrow in FIG.

  By the replacement roller 1, the coating agent that comes out of the chamber doctor blade device 9 and adheres to the surface structure of the replacement roller 1 is attached to the coating plate cylinder 7.

  The chamber doctor blade device 9 is mounted in a movable state by the swivel holder 10 so that the chamber doctor blade device 9 can move to the release position as indicated by an arrow P1, and the details will be described below. As described above, the replacement roller 1 can be taken into and out of the work position I.

  The actual coating unit 2 is under the cover 11. Since the cover 11 is configured such that the window portion 12 is temporarily opened by the cover, the cover 11 can appear and disappear in a range where the replacement roller 1 is covered through the window portion.

  The roller changer incorporated in the printing machine 13 includes a lifting arm device 14 having a left lifting arm structure 15 and a right lifting arm structure 16 (see FIG. 4). The lifting arm device 14 makes it possible to move the replacement roller 1 between the work position I and the storage position III.

  The roller exchanging device is further provided with a bearing device 17 for supporting the lifting arm device 14 in a state in which the lifting arm device 14 can be swiveled around the swivel axis S, and this device is arranged on the rotating shaft of the roller 1 to be replaced. They are arranged in parallel. The pivot axis S passes through an intermediate range in the vertical direction between the work position 1 of the replacement roller and the storage position III.

  A bearing device 17 for supporting the lifting arm device 14 is attached to a side frame of the printing press 13. The left lifting arm structure 15 and the right lifting arm structure 16 are configured such that the radial distance of the exchange roller 1 from the pivot axis S can be changed according to the control of the roller exchange device at that time.

  The pivot axis S is above the work position I of the replacement roller 1. In order to lift the replacement roller 1, the two lifting arm structures 15, 16 are retracted, and the replacement roller 1 approaches the pivot axis S.

  When the exchange roller 1 is fully retracted, the lifting arm structures 15, 16 can pivot about the pivot axis S so that the exchange roller can now be moved to position II or IV. In this position II or IV, the replacement roller is optionally subjected to automated handling, in particular cleaning.

  The replacement roller 1 is lifted when the roller is grasped in the range of the shaft end of the roller. For this purpose, the lifting arm structures 15, 16 are provided with a grip structure for gripping the replacement roller.

  The lifting arm structures 15 and 16 can form part of a star-shaped lifting arm having a plurality of arms. These lifting arm structures are implemented as telescopic cylinders in the illustrated embodiment.

  The sheet printer 13 provided with the roller exchanging device described above is provided with a mounting device in the range of the bearing support portion of the exchanging roller 1, and this mounting device can be selectively moved to the mount position and the release position. it can. In the mount position, the replacement roller 1 is attached in a rotatable state at the previous work position I. In the release position, the replacement roller 1 can be removed from the assigned bearing system. The bearing system can therefore be implemented as a safety bearing with a cantilevered cradle.

  The storage position III is in the upper roller storage range WAB, and a plurality of replacement rollers can be stored in this storage range. A magazine device can be provided here, by means of which the roller can be lifted and moved to a suitable gripping position for gripping with the arm structures 15, 16.

  In the roller storage range, the roller stored here is preferably supported in the range of its bearing journal. Here, the bearing journal is placed on bearing guide grooves 18 provided on both sides.

  The roller movement that can be performed in the printing press by the roller changer of the present invention is shown schematically in FIG.

  In order to remove the roller 1 (shown by the bearing journal in this figure) from the working position I, first the star-shaped lifting arm and the pair of lifting arms provided for lifting the roller 1 face the roller 1. Is turned around the turning axis S. Next, the lifting arm pair is extended, and the gripper head grips the corresponding part of the roller 1. The roller 1 can then be lifted because it is unlocked and freed from the area of its bearing area. In parallel with this, in some cases the dressing device in contact with the roller 1, in particular the chamber doctor blade device, is lifted away from the roller 1.

  A roller that is grabbed and released from the bearing can be lifted. In order to lift the roller, the pair of lifting arms moves backward as indicated by the arrow K1, so that the roller 1 approaches the pivot axis S.

  As soon as roller 1 reaches position I ′, the lift arm pair is pivoted as shown by arrow T2, so that roller 1 moves to position II. At this position or a nearby position, the roller 1 can be applied to the cleaning device.

  By further swiveling the lifting arm pair holding the roller (arrow T3), the roller moves to the position III ′ positioned in the vertical direction on the swivel axis S. The lifting arm pair can now be controlled (arrow E4) so that the radial distance of the roller 1 to the pivot axis S increases again. At this time, the roller 1 moves to the range III above the printing press.

  In this upper range, the roller can be opened and moved to the storage position in a substantially horizontal direction as indicated by arrows L1 and L2. A positioning aid or for example a belt drive or chain drive can assist in moving the roller to a specific storage position, and the final storage position can be forced.

  In order to automatically remove the roller from the upper area of the printing press, the roller first moves to position III. The roller is then grabbed by the lifting arm pair. The grabbed roller descends as shown by arrow K5 by retracting the lifting arm.

  As soon as the roller reaches position III ′, the lifting arm system pivots (arrow T6) and the roller moves to position IV. In this position, this roller to be replaced can be subjected to a preliminary treatment such as dust removal or cleaning as required.

  Next, the roller is further swung (arrow T7) and reaches position I ′. Here, the roller is above the working position I.

  Here, the roller is lowered to the working position I by extending the lifting arm. During this descent, the mount for receiving the end pins of the roller is in a receiving state so that the roller can be inserted from above. The roller is then mounted in the mount, for example by pushing the blocking element in the axial direction.

  After the roller is installed in the working position, an auxiliary unit of the roller, for example a chamber doctor blade device, can be brought into contact with the roller.

  In a lifting arm system with a plurality of arms, in particular when two lifting arms are arranged facing each other on the pivot axis diameter, the flow of operation for removing and setting the roller is at least within the phase Since it can be carried out simultaneously, the roller replacement process can be carried out particularly with time savings.

  The lifting arm system can be configured to be highly rigid so that the gripper device can be positioned sufficiently accurately by controlling the flow of motion with sufficient accuracy. As an alternative method, it is possible to provide a strong guide structure on the frame side, and this guide structure is a structure related to the grip, at least in the position of the gripper head related to grasping or releasing the roller. Can be guided and positioned accurately.

  Through the roller exchange system according to the invention, it is also possible in some cases to utilize other storage positions Q1, Q2 in particular in the machine protection cover by means of suitable path control.

  FIG. 3 (a) schematically shows a lifting arm system, which has only one lifting arm 15 (A side) and 16 (B side) for each frame side. . The lifting arm is implemented as a telescopic cylinder. The cylinder can be configured and arranged so that the cylinder passes through the turning axis S and jumps out from the rear via the hub range 15N. The dimension of the protruding portion of the cylinder can be determined so as to be approximately equal to the radial distance from the turning axis S at the tip of the grip head 18 in the retracted state.

  FIG. 3 (b) shows a variation of two arms of the lifting arm system. Here, the lifting arms 15A and 15B are arranged so as to face each other in diameter.

  FIG. 3C shows a variation of three arms. The lifting arms 15A, 15B and 15C are arranged in the hub range 15N so as to equally divide the circumference. This division can also be done in other ways, so that it can be correlated to the specific rotational position of the lifting arm system and the position of the delivery station and possibly the handling station.

  FIG. 3D shows a variation of four arms. Particularly in this variation, the lifting arm system functions as an intermediate magazine, in which three rollers can be stored, and a pair of lifting arms can be prepared for lifting the rollers from the working position.

  FIG. 4 shows the position in the printing machine of the one-arm system of FIG. The lifting arms 15 and 16 adjacent to the A and B side frames are connected to each other via a cross beam 19. The cross beam 19 is here implemented as a relatively torsion-resistant structure and extends coaxially with respect to the pivot axis S. The cross beam 19 can also be configured as a curved structure, in which the cross beam is bent backward on the side opposite to the lifting arms 15, 16 with respect to the pivot axis.

  It is possible to incorporate a turning drive device into the cross beam 19, and for example, a drive torque necessary for turning the lifting arm portal can be obtained via a turning drive device such as a torsion cylinder.

  The apparatus according to the invention is particularly suitable for introduction into a sheet-fed rotary printing press comprising a flexographic printing device or a coating unit by means of chamber doctor blade / anilox roller technology. This device is also particularly suitable for sheet-fed offset printing presses with coating units or flexo devices arranged in-line for pre-coating or in-line processing before pre-coating, before, after or in the middle .

  On the basis of the concept of the present invention, it is possible to provide a processing device (especially a machine built-in type anilox roller automatic changer) built into the printing press, and this device can perform component movement highly dynamically. The apparatus of the present invention is preferably controlled with full automation from the control center, or with partial automation near the module and possibly with operator control.

  The bearing structure provided for incorporation in the printing press is preferably attached to the side posts on the A and B sides of the printing press.

  The lifting arm can be realized as a telescoping cylinder system that can be vertically retracted as described. The lifting arm is preferably driven by compressed air. The lifting arm can also be driven hydraulically or other mechanically, for example via a ball screw or nut structure.

  The outer end of the lifting arm is equipped with a lift-out bolt or other gripping device, such as a ball retainer bolt, in particular a ball release / stopper bolt, which is inserted into a pin hole provided on the roller side. It can be locked in the hole. The release of the ball is effected by a pin, which can be moved axially within the lift-out bolt and releases the assigned ball radially via the shoulder device. The roller can also be gripped by other grippers or hook systems. The flow of operation can be secured by a protection system. The flow of the opening of the machine protective cover for the roller transfer can be controlled so that the opening of the protective cover is sufficient for a short time and only once. The clamping of the bearing can also be automated in process technology or can be released or set automatically with a special mechanical configuration.

  The rollers are slidably arranged in the lateral storage range. In this range, a washing station, auxiliary at least a washing pan, is arranged. With the apparatus of the present invention, a large roller can be replaced with a one-man operation while saving setting time.

  The apparatus of the present invention can be adapted with few changes to machines having various paper widths and models. Due to the small installation space required, it can be integrated into existing printing press concepts without any changes to the side posts and the side machine protection covers.

Other details and features of the invention can be understood from the following description and figures.
It is sectional drawing which shows the structure of the apparatus of this invention, and the state in which this apparatus was integrated in the printing machine. The movement motion that can be realized by the apparatus of the present invention is shown in the figure, and the replacement roller can be moved between the work position and the storage position by this movement motion. (A) is a diagram of a variation of the lifting device with one arm, (b) is a diagram of a variation of the lifting device with two arms, (c) is a diagram of a variation of the lifting device with three arms, (d ) Is a variation of a lifting device with four arms. It is a figure of the right and left lifting arm apparatus connected via a cross beam.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Exchange roller 2 Coating unit 3 Sheet paper feed stand 4 Pregripper 5 Transfer cylinder 6 Cylinder 7 Coating plate cylinder 8 Drum 9 Chamber doctor blade apparatus 10 Turning holder 11 Cover 12 Window part 13 Printing machine 14 Lifting arm apparatus 15 Lifting arm structure 15A Lifting arm 15B Lifting arm 15C Lifting arm 16 Lifting arm structure 17 Bearing device S Rotating shaft 18 Grip head 19 Cross beam

Claims (17)

An apparatus for exchanging rollers in an inking device or a coating unit of a sheet-fed printing machine (13),
A lifting arm device (14) comprising a left lifting arm structure (15) and a right lifting arm structure (16) for moving the exchange roller (1) between the working position (I) and the storage position (III) ,as well as,
A bearing device (17) for supporting the lifting arm device (14) so that it can pivot about the pivot axis (S);
The pivot axis is arranged substantially parallel to the rotation axis of the roller (1) to be replaced, and this pivot axis (S) is defined between the working position (I) and the storage position (III) of the exchange roller (1). A device characterized in that it passes through an intermediate range located vertically between them. The apparatus of claim 1, comprising:
A device characterized in that a bearing device (17) for bearing support of the lifting arm device (14) is attached to the side frame of the sheet-fed printing machine (13). An apparatus according to claim 1 or claim 2, wherein
The left lifting arm structure (15) and the right lifting arm structure (16) are configured such that the radial distance of the replacement roller (1) from the pivot axis (S) can be changed. The apparatus according to any one of claims 1 to 3, comprising:
The rotation target shaft (S) is above the working position (I) of the replacement roller (1), and the left lifting arm structure (15) and the right lifting arm structure (16) are moved backward, so that the roller to be replaced ( A device characterized in that 1) is lifted. The apparatus according to any one of claims 1 to 4, comprising:
The pivot axis (S) is above the working position (I) of the replacement roller (1), and the left lifting arm structure (15) and the right lifting arm structure (16) have a radius with respect to the pivot axis (S). The replacement roller (1) is set at the working position (I) by being advanced in the direction. An apparatus according to any one of claims 1 to 5, comprising:
A device characterized in that the left and right lifting arm structures (15, 16) are provided with a grip head (18) for gripping the exchange roller (1) in the range of the shaft end, in particular in the range of its bearing journal. The apparatus according to any one of claims 1 to 6, comprising:
A device characterized in that the left and right lifting arm structures (15, 16) each form part of a star-shaped lifting arm with a plurality of arms. An apparatus according to any one of claims 1 to 7, comprising:
Device, characterized in that the lifting arm structure (15, 16) is implemented as a telescopic cylinder.   A sheet-fed printing machine comprising the roller exchange device according to any one of claims 1 to 8, comprising a bearing device for bearing-supporting the exchange roller at a working position (I). At this time, the bearing device is equipped with a mounting device, and the mounting device can be selectively moved to the mounting position and the release position, and the replacement roller (1) rotates to the working position at the mounting position. A sheet-fed printing machine, which is mounted in a possible state and is in a state where it can be removed from the bearing device at a release position. A sheet-fed printing press according to claim 9,
A sheet-fed printing machine, wherein the bearing device can be implemented as a safety bearing having a cradle with a cantilever support. A sheet-fed printing press according to claim 9 or claim 10,
A sheet-fed printing machine characterized in that the storage position is within the roller storage range. A sheet-fed printing press according to any one of claims 9 to 11,
A sheet-fed printing machine characterized in that the switching device can be controlled from the machine control center. A sheet-fed printing press according to claim 12,
A sheet-fed printing machine characterized in that the control of the exchange device is performed in consideration of the parameters of the operating state of the machine. A sheet-fed printing press according to claim 13,
A sheet-fed printing machine characterized in that an operation signal can be generated by inquiring a parameter of an operating state of a machine, and a roller replacement procedure can be started or adjusted based on the operation signal. A sheet-fed printing machine according to any one of claims 12 to 14,
A sheet-fed printing press characterized in that a roller changer is connected to the machine control center in terms of control technology so that a movement command and an actuation signal can be input from the machine control center. A sheet-fed printing press according to any one of claims 12 to 15,
A sheet-fed printing machine, characterized in that the control of the roller changer is carried out in consideration of the process concept in terms of process technology in order to avoid operating situations leading to danger or damage. A sheet-fed printing machine according to any one of claims 12 to 16,
A sheet-fed printing machine, characterized in that, in order to avoid or at least significantly reduce the discharge in the roller change, the control of the roller changer is carried out with the air guide concept as a process technology.

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