Mobile storage module for sheet pile, system and method of operation

Abstract

To allow for a secure storage, transport and transfer of sheet piles between machines in a graphic industry.SOLUTION: There is provided a mobile storage module comprising at least one inclined storage surface, the storage surface being adapted to store a plurality of sheet piles 2 in series, in which the storage surface can be displaced into two different horizontal positions, namely a loading position and an unloading position. In this case, displacement is preferably performed by a robot arm 44.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] invention The invention relates to a mobile storage module for sheet piles having the features of the preamble of claim 1, a system according to claim 16 and an operating method according to claim 18.

[0002] Technology field The invention is located in the technical field of the graphic industry, in particular in the field of storing and transporting piles (sheet piles) of superimposed flexible, preferably printed and folded flat products, for example folded sheets (sheet piles), preferably made of paper, cardboard, paperboard, plastic or composite materials, and loading and unloading them from storage by means of a manipulator, in particular an articulated / bent-arm robot with a robot arm and a gripper device for the piles.

[0003] Background technology Folding machines and subsequent processing machines, such as collating machines, binding machines, or stitching machines, equipped with feeders are already known, located downstream of the folding machines. In this case, folded sheets must be transported from one machine to the next and fed there. Transporting is usually done on pallets. Since lowering a stack of sheets onto the pallet and manually placing and feeding it again involves work, energy, and time, robots are already used in this area. "Storing" and transporting the stack on a pallet leads to further problems, such as slippage or flipping of the stack or individual sheets. Therefore, there is a constant need for improvements in logistics between and within these machines.

[0004] Unpublished German patent application no. 102023117693.5 discloses such an improvement, i.e. a lifting and storage module, machine and system for handling folded layers, as well as a production method. In this context, a mobile storage module for folded layers is also disclosed, which comprises a number of storage surfaces arranged one above the other, which are provided with movable belts and may be tilted.

[0005] Furthermore, different transport carriages for paper or other articles are known.

[0006] DE 3531188 A1 discloses a mobile paper carriage with several horizontally oriented bases, on each of which several piles of paper can be placed.

[0007] Chinese Utility Model No. 217623687 discloses a transport carriage with an inclined storage surface for placing articles, which are automatically moved "down" to each end position based on the inclination of the storage surface. To unload the articles, they must be pushed "up" again, for which a corresponding device is provided. Chinese Utility Model No. 209618105 discloses a similar concept, but with multiple storage surfaces stacked one on top of the other.

[0008] Technical challenges The object of the present invention is therefore to provide an improvement over the prior art, which in particular allows sheet piles to be securely stored, transported and handed over between machines in the graphics industry.

[0009] The solution of the problem according to the invention This problem is solved according to the invention by a mobile storage module for sheet piles having the features of the preamble of claim 1, a system according to claim 16 and an operating method according to claim 18.

[0010] Advantageous and therefore preferred refinements of the invention are evident from the dependent claims and from the description and drawings.

[0011] A mobile storage module according to the invention for sheet piles during the production and / or further processing of printed products, comprising at least one inclined storage surface, which is configured to store multiple sheet piles in series. The mobile storage module is characterized in that the storage surface can be displaced into two mutually different horizontal positions.

[0012] The system of the present invention comprises at least one mobile storage module of the present invention, at least one first robot with a first robotic arm for loading the storage module, and at least one second robot with a second robotic arm for unloading the storage module.

[0013] A method according to the invention for operating a system according to the invention is characterized in that a storage module is moved into the working area of a first robot, the first robot loads at least one sheet pile onto at least one storage surface at its loading position, and the storage module is moved into the working area of a second robot, and the second robot unloads the storage module from the storage surface at its unloading position.

[0014] Advantageous Configurations and Effects of the Invention The present invention (as an apparatus or storage module, system and / or method) advantageously allows for the secure storage, transport and transfer of sheet stacks between machines in the graphics industry, for example between a folder and a stitcher.

[0015] The invention offers the advantage that, for example, robots can be used for loading and unloading, in which case sheet piles can be reliably delivered, received, stored, and transported. The storage surface to be loaded or unloaded can be moved, in particular slid, into the corresponding (loading and unloading) positions. In each of these positions, the storage surface is easily accessible to one or more robots. During transport, the storage surface and thus the sheet pile is in a safe (intermediate) position. The storage surface serves as a resting surface for the sheet pile to be stored in the production process. As resting elements, surfaces equipped with rollers, rollers, or balls may be present, respectively, but alternatively, surfaces equipped with one or more belts may also be present. The surfaces may also be formed as purely smooth surfaces without any attachment.

[0016] Each storage surface is formed as an inclined storage surface (with or without one or more side walls or one or more stops) and, depending on the configuration, may also be called a (inclined) storage plane, storage tray, storage compartment or storage cassette. Each storage surface is also movable, in particular slidable, and, depending on the configuration, may also be called a storage drawer.

[0017] The sheet pile to be stored is preferably formed by superimposed (loose) sheets, in particular folded sheets or so-called signatures, made for example of paper or cardboard.

[0018] The robot arm is preferably part of a robot system, which usually also comprises a robot base and may be configured as a conventional industrial robot including a fence for operator protection, in particular as an articulated arm robot with 3 to 7 axes of rotation, or as a so-called collaborative robot system, in particular a so-called cobot. This collaborative robot system does not require a fence, since it has its own sensor system that detects contact with the operator and prevents possible injuries, for example by automatically stopping the robot arm movement. Alternatively to a cobot, a collaborative robot system may also be realized by an industrial robot with an additional area scanner (for detecting the operator in a dangerous area) and an automatic stopping device.

[0019] Improvements of the invention In the following, preferred refinements (abbreviated as refinements) of the invention will be described, which refinements may be combined with one another if this is not technically excluded.

[0020] Improved storage module A refinement may be characterized in that the storage surface is displaceable in a first horizontal position. A refinement may be characterized in that the first horizontal position is a loading position. A refinement may be characterized in that the storage surface can be loaded with sheet piles in the loading position. A refinement may be characterized in that the storage surface is displaceable in a second horizontal position (different from the first horizontal position). A refinement may be characterized in that the second horizontal position is an unloading position. A refinement may be characterized in that the sheet piles can be unloaded from the storage surface in the unloading position. A refinement may be characterized in that the loading position and the unloading position are located opposite each other. In this case, "different horizontal positions" means that the respective positions are horizontally distinguished from each other, i.e., for example, to the "left" and "right" of the storage module (see drawings).

[0021] A refinement may be characterized in that the storage surface is lockable in the loading position (e.g. against unintentional sliding). A refinement may be characterized in that the storage surface is lockable in the unloading position. A refinement may be characterized in that the storage surface is lockable in an intermediate position between the loading and unloading positions. A refinement may be characterized in that for each lock there is a snapper, which may preferably be operated by a robot.

[0022] A refinement may be characterized in that the storage surface is automatically displaced from the loading position to the intermediate position, and the storage surface is automatically displaced from the unloading position to the intermediate position. A refinement may be characterized in that the at least partially loaded storage surface is automatically displaced from the loading position to the intermediate position under its own weight. A refinement may be characterized in that the automatic displacement is caused by a robotic arm, a drive, or by hand. For example, a robot may push or pull the storage surface from the loading or unloading position, after which the storage surface may be moved or subsequently moved automatically. A refinement may be characterized in that an end position damper is present for the storage surface in the unloading position.

[0023] A refinement may be characterized in that an actuator is present for displacing the storage surface from the loading or unloading position to an intermediate position. A refinement may be characterized in that the actuator is at least one compression spring. A refinement may be characterized in that the actuator works pneumatically, hydraulically or electrically. A refinement may be characterized in that the actuator is a robot arm. This solution is advantageous because no additional actuators are needed other than the (already present) robot. A refinement may be characterized in that the storage surface is pushed. A refinement may be characterized in that the storage surface is pulled. A compression spring may be arranged between the frame of the storage module and the storage surface (movable relative to it) and can assist the robot in pushing and pulling, which first (after loading) pushes the storage surface towards the compression spring, pivots the compression spring due to its pivotable mounting, and then pushes the storage surface further, and correspondingly in the opposite direction (after unloading).

[0024] A refinement may be characterized in that the movement from the first horizontal position to the second horizontal position is performed in a horizontal direction.A refinement may be characterized in that the movement from the first horizontal position to the second horizontal position is performed in a direction oblique to the horizontal direction.

[0025] A refinement can be characterized in that the storage surface comprises a longitudinal direction and a lateral direction. A refinement can be characterized in that a plurality of sheet piles are placed on the storage surface in the longitudinal direction. A refinement can be characterized in that the storage surface is inclined in the longitudinal direction. A refinement can be characterized in that the storage surface is additionally inclined in the lateral direction. The respective inclination (and at the same time the provision of correspondingly arranged stops for the sheet piles) improves the secure storage and transport of the sheet piles in the (single or double) inclined position.

[0026] A refinement may be characterized in that the storage surface comprises at least one groove for accommodating one gripper fork each. A refinement may be characterized in that the groove extends in the longitudinal or transverse direction of the storage surface. A refinement may be characterized in that the storage surface comprises at least one groove for accommodating one gripper fork each for the sheet piles in the loading area. A refinement may be characterized in that the storage surface comprises at least one groove for accommodating one gripper fork each for the sheet piles in the unloading area.

[0027] A refinement can be characterized in that the storage surface is equipped at different positions in its longitudinal direction with conveying rollers (corresponding to the width of the storage surface), conveying rollers (several of which are arranged side by side along the width of the storage surface), or preferably conveying balls for the sheet piles. The rollers, rollers, or balls preferably extend somewhat beyond the resting surface of the storage surface, for example by a few millimeters. A refinement can be characterized in that the conveying rollers, conveying rollers, or conveying balls are designed with brakes, in which case the sheet piles are braked and thus moved more reliably along the storage surface. A refinement can be characterized in that the conveying rollers, conveying rollers, or conveying balls are designed with freewheels, in which case the sheet piles are reliably moved along the storage surface only in one direction and cannot be returned. A refinement can be characterized in that the storage surface is equipped with additional braking elements, for example small hooks.

[0028] A refinement may be characterized in that the storage module comprises several inclined storage surfaces. A refinement may be characterized in that the storage surfaces are arranged one above the other (at different heights). A refinement may be characterized in that the storage surfaces are identical to one another. In this case, the storage module may have the form of a rack. Alternatively or additionally, several storage surfaces may be present next to one another (at the same height), in which case the individual storage surfaces may preferably be moved back and forth independently of one another.

[0029] A refinement may be characterized in that the storage module comprises rollers for moving the storage module on the floor. A refinement may be characterized in that the storage module comprises at least one parking brake. A refinement may be characterized in that the storage module is configured to be moved by a forward transport vehicle (FTF). The FTF can preferably enter underneath the storage module and lift it up. For this purpose, the storage module preferably has a corresponding opening on at least one side near the floor. A refinement may be characterized in that the storage module is configured to be moved by a forklift. A refinement may be characterized in that the storage module is configured to be stored in a high-rack warehouse. For this purpose, the storage module may have corresponding rails or a bottom on its underside.

[0030] A refinement may be characterized in that the storage module has a frame in which at least one storage surface is slidably supported. The frame may be made of metal. The frame may preferably be fitted with horizontal rails for the movable storage surface, for example telescopic rails similar to those in drawers.

[0031] A refinement may be characterized in that the sheet pile comprises folded sheets lying on top of one another.A refinement may be characterized in that the storage module accommodates sheet piles from different production jobs.

[0032] System improvements A refinement may be characterized in that the system comprises a docking module for the mobile storage module. This docking module may be attached to the production floor. The docking module may be coupled to the robot. A refinement may be characterized in that the docking module determines the positioning of the storage module relative to the robot, thereby ensuring that the robot correctly stores or receives the sheet pile in the storage module or correctly inserts the forks of its gripper for the sheet pile into the grooves in the storage surface. In this case, teaching is advantageously not required, since the dimensions and positioning of the involved modules (robot, storage module) are known and provided to the control computer for the robot. The mobile storage module may be locked to the docking module, for example by its transport rollers, and thus fixed in position against unintentional movement.

[0033] Improved Method for Actuating A refinement may be characterized by displacing the storage surface from the loading position to the intermediate position or causing automatic displacement of the storage surface from the loading position to the intermediate position by the first robotic arm or the second robotic arm.A refinement may be characterized by displacing the storage surface from the unloading position to the intermediate position or causing automatic displacement of the storage surface from the unloading position to the intermediate position by the first robotic arm or the second robotic arm.

[0034] The features and combinations of features disclosed in the above Technical Field, Invention and Improvements sections and in the Examples section below may be combined with one another in any way to form further advantageous improvements of the present invention.

[0035] Examples and drawings for the invention 1 to 4 show preferred embodiments of the present invention and improvements. In the figures, corresponding features are designated by the same reference numerals. Repetition of reference numerals within the figures has been omitted for clarity. [Brief explanation of the drawings]

[0036] [Figure 1] 1 is a perspective view of a preferred embodiment of a storage module according to the present invention; [Figure 2] 1 is a side view of a preferred embodiment of a storage module according to the present invention; [Figure 3] FIG. 1 is a side view of a preferred embodiment of a storage module according to the present invention during loading by a robot. [Figure 4] FIG. 1 is a side view of a preferred embodiment of a storage module according to the present invention during robotic unloading.

[0037] 1 and 2 show a mobile storage module 1 according to the present invention for storing a plurality of stacks 2 of overlapping sheets 3 in different planes. The storage module 1 comprises a frame 4 with a plurality of storage surfaces 5 or storage compartments, for example, five in the illustrated example. The storage module 1 has a rack-like structure. The individual storage surfaces 5 are inclined in at least one direction 72 relative to the horizontal 70 and, optionally, in a direction 73 transverse to the horizontal 70 (first inclination 18 and optional second inclination 19 of each storage surface 5). The individual storage surfaces 5 are spaced apart and overlap one another in the vertical direction 71 (which defines the maximum height of the sheet stacks 2 to be stored). The storage module 1 may comprise rollers 54, which can be pushed by an operator, for example, for moving the storage module 1 over the floor 74 of a production site (e.g., a printing shop). The rollers 54 themselves may be equipped with parking brakes. The storage module 1 has a longitudinal direction 10 and a transverse direction 11. A plurality of sheet piles 2 can be placed and thus stored on each storage surface 5 in the longitudinal direction 10 or in a direction 72 (slightly) inclined relative to the longitudinal direction 10. In this case, the sheet piles 2 are in different storage positions on each storage surface 5, i.e., two or more sheet piles 2 can be delivered in a row per storage surface 5. Due to the inclination 18, the storage module occupies each storage surface 5 approximately "from bottom to top" with respect to the sheet piles 2.

[0038] For loading, unloading and storage of sheet piles 2, the storage module 1 comprises a loading area 12, an unloading area 13 and an intermediate storage area 14, which may overlap the loading and unloading areas 12, 13. Each storage surface 5 may be pushed or pulled in a direction 15a to a first position 15, which allows access to the loading area 12 for loading. Correspondingly, each storage surface 5 may be pushed or pulled in a direction 16a to a second position 16, which allows access to the unloading area 13 for unloading. Figure 3 shows one storage surface 5 in the loading position 15, and Figure 4 shows one storage surface 5 in the unloading position 16. In contrast to this, Figure 1 shows all storage surfaces 5 in an intermediate position 17, into which sheet piles 2 have been delivered and into which the storage module 1 can be moved.

[0039] As can be seen in Figures 1 and 2, each storage surface 5 has grooves 20, in particular longitudinal and lateral grooves in the loading area 12 and lateral grooves in the unloading area 13. These grooves facilitate the lowering and placement of the sheet pile 2 when it is placed on the forks 48 (see Figures 3 and 4), which may be oriented in the longitudinal direction 10 or the lateral direction 11 in the loading area and in the lateral direction 11 in the unloading area 13. Each storage surface 5 preferably has a stop 6 for the sheet pile 2 in the unloading area 13, so that the unloading area 13 does not have any longitudinal grooves. The stop 6 defines the storage position of the first sheet pile 2 on each storage surface 5, so that all other sheet piles 2 introduced into the same storage surface 5 abut against the sheet pile 2 already introduced previously.

[0040] Each storage surface 5 may be provided with a locking element 21 that allows the storage surface 5 to be locked in one of its positions 15, 16, 17. The locking element 21 may be formed, for example, as an easily operated snapper, in which case the locking element 21 may preferably be operated either by an operator or by a robot. Each storage surface 5 may be provided with an end position damper 22 that damps the movement of the storage surface 5 in the end position of the intermediate position 17. Elements 21, 22 are illustrated in FIG. 2 for only one storage surface 5.

[0041] As can be seen in Figures 1 and 2, each storage surface 5 is fitted with (an array of) transport balls 23 on its surface (facing the sheet pile 2 to be stored). Alternatively, transport rollers or transport rollers may be used. The introduced sheet pile 2 is automatically moved towards the stop 6 based on its pile weight, its inclination 18 and the transport balls 23. In order to limit the speed of this movement, the transport elements, in this case the transport balls 23, may be equipped with brakes 24. Furthermore, in order to prevent movement of the sheet pile 2 in the opposite direction (i.e. away from the stop 6), such undesired movement of the sheet pile 2 could occur when the storage module 1 is moved.

[0042] As can be seen from FIGS. 1 to 4 , each storage surface 5 is movably arranged within the frame 4 and is movable from a storage position 17 in a "left" orientation to a loading position 15 and in a "right" orientation to an unloading position 16. The movement of each storage surface 5 may be performed by an operator, but preferably the movement is performed by a robot 40; 42. To enable this movement, for example, rails may be provided on the frame 4. To move each storage surface 5, a respective actuator 30 may be provided. This actuator 30 may be, for example, a drive device (electric, pneumatic, or hydraulic) or may be a pivotable compression spring 31 that preferably only causes or assists the automatic movement of the storage surface 5.

[0043] FIG. 2 also shows a system 50 according to the present invention. The system 50 includes at least one, but preferably many, storage modules 1 according to the present invention. The system 50 may include one or more automated guided vehicles (FTFs) (shown symbolically for illustrative purposes) that preferably move underneath the storage module 1, slightly lift it, and move it automatically across the floor 74. Alternatively or additionally, the system 50 may include one or more forklifts 60 (only one fork is shown for illustrative purposes) that can also lift and move the storage module 1. Furthermore, the system 50 may include a high-rise rack warehouse 61 that can store many empty or loaded storage modules 1. The illustrated system 50 may realize logistics for a production site, e.g., a printing shop, where products, e.g., printed products, can be loaded, transported, and removed in a computer-controlled and automated manner, thus connecting multiple production machines, e.g., post-printing processing machines, for frictionless production.

[0044] 3 shows the automated loading of a sheet pile 2 onto a storage surface 5 at its loading position 15. For this purpose, a first robot 40 is present, which has a first working area 41 and a first robot arm 44. In this case, the first working area 41 extends from a first machine 51, for example a folding machine, to a storage module 1, which is preferably arranged in a docking module 53 during loading and is thus arranged in a defined position relative to the robot. For this purpose, the docking module 53 can have a receptacle for rollers 54, for example. The first robot 40 receives the sheet pile 2 to be delivered at the first machine 51 and transfers it to the storage module 1 or to a storage surface 5 advanced to the loading position 15. For this purpose, the first robot 40 preferably has a gripping tool 46 with a movable gripper 47 with two forks 48, which engage the underside of the sheet pile 2 during transport by the robot. The forks 48 can penetrate into an existing groove 20 during loading, in which case loading is possible both longitudinally 10 and laterally 11 depending on the preferred orientation of the groove, i.e. the first robot 40 rotates the gripping tool 46 in each direction during loading. Preferably, only one storage surface 5 is advanced at any time.

[0045] The loading is automated; for this purpose, the first robot 40 is equipped with a control unit 49. The control can be preferably such that the first robot 40 receives the sheet piles 2 from the first machine 51 and transfers them into the storage module 1 according to production. For this purpose, the first robot 40 can pull each storage surface 5 from its intermediate position 17 to the loading position 15 and then push it back to the intermediate position 17 after loading. For this purpose, the gripping tool 46 and the storage surface 5 can preferably be equipped accordingly with existing connecting elements. The control unit 49, or alternatively a higher-level control device, tracks the production and transfer. In this case, it is particularly possible to monitor and electronically store which sheet piles 2 have been transferred into which storage module 1, so that the sheet piles 2 can later be removed correctly, i.e., in the correct order, for subsequent production. This is particularly advantageous when using multiple storage modules 1 and / or a high-rack warehouse 61.

[0046] 4 shows the automated unloading of a sheet pile 2 from the storage surface 5 at its unloading position 16. For this purpose, a second robot 42 is present, which has a second working area 43 and a second robot arm 45. In this case, the second working area 43 extends from a second machine 52, such as a collating or binding machine or stitching machine, to a storage module 1, which is preferably arranged in a (separate) docking module 53 during loading and thus also arranged in a defined position relative to the robot. The second robot 42 receives the sheet pile 2 to be delivered at the storage module 1 or at the storage surface 5 advanced to the unloading position 16 and transfers this sheet pile 2 to the second machine 52. For this purpose, the second robot 42 is also provided with a gripping tool 46, which also preferably has a movable gripper 47 with two forks 48. When unloading, the forks 48 can penetrate into the existing grooves 20, where, due to the preferred orientation of the grooves, unloading is only possible in the lateral direction 11, i.e. the second robot 42 rotates the gripping tool 46 in this direction. The second robot 42, corresponding to the first robot 40, can pull each storage surface 5 from its intermediate position 17 to the unloading position 16 and push it back into the intermediate position 17 after unloading. Preferably, only one storage surface 5 is advanced at any time.

[0047] The first robot 40 and the second robot 42 may be identical in construction. The second robot 42 also preferably has a control unit 49, by means of which the unloading can also be controlled according to the production or production rate. Based on electronically stored information about the incoming sheet piles 2 (production jobs) and their respective storage locations (high-rack warehouse, storage module 1, storage surface 5, storage position on storage surface 5), the second machine 52 can be supplied with the correct sheet piles 2 in the correct order according to production.

[0048] If the second machine 52 has several feeders for the sheet piles 2, the second robot 42 may operate several feeders or several second robots 42 may be provided, so that several storage modules 1 can be unloaded simultaneously. The same applies correspondingly to the first machine 51 or its delivery or delivery transport section. [Explanation of symbols]

[0049] 1 Storage Module 2. Sheet pile 3 seats 4 frames 5 Storage surface 6 Stopper 10 Longitudinal direction 11 Horizontal 12 Loading Area 13 Unloading Area 14 Storage area 15 First position, loading position 15a Move to first position 16 Second position, unloading position 16a Move to second position 17 Intermediate positions, especially storage positions 18 First Inclination 19 Second Inclination 20 grooves 21 Rock elements, especially snappers 22 End position damper 23 Conveying roller, conveying roller or conveying ball 24 Brake 25 freewheel 30 Actuator (for displacing the storage surface) 31 Drive or compression spring (for displacing the storage surface) 40 The First Robot 41 First Working Area 42 Second Robot 43 Second Work Area 44 First Robot Arm 45 Second Robot Arm 46 Gripping tool 47 Gripper 48 Fork 49 Control Unit 50 systems 51 First Machine, Especially the Folding Machine 52 Second Machine 53 Docking Module 54 Roller (of storage module) 60 FTF or forklift 61 High-rise rack warehouse 70 Horizontal 71 Vertical 72 Tilt direction 73 Different tilt direction 74 Production Floor

Claims

1. A mobile storage module for sheet piles during the production and / or further processing of printed products, comprising at least one inclined storage surface (5), which is adapted to store a plurality of sheet piles (2) in series, A mobile storage module, characterized in that the storage surface (5) is displaceable into two different horizontal positions (15, 16).

2. 2. A mobile storage module according to claim 1, characterized in that the storage surface (5) is displaceable into a first horizontal position (15), which is a loading position (15).

3. 3. A mobile storage module according to claim 1 or 2, characterized in that the storage surface (5) is displaceable into a second horizontal position (16), which is an unloading position (16).

4. 4. The mobile storage module according to claim 1, wherein the storage surface (5) is lockable in a loading position (15) and / or in an unloading position (16).

5. 5. A mobile storage module according to claim 1, wherein the storage surface (5) is automatically displaceable from a loading position (15) to an intermediate position (17) and the storage surface (5) is automatically displaceable from an unloading position (16) to the intermediate position (17).

6. 6. The mobile storage module according to claim 1, further comprising an actuator (30) for displacing the storage surface (5) from the loading position (15) or the unloading position (16) to an intermediate position (17).

7. 7. A mobile storage module according to claim 6, characterized in that the actuators (30) are robotic arms (44, 45).

8. 8. A mobile storage module according to any one of claims 1 to 7, characterized in that the storage surface (5) comprises a longitudinal direction (10) and a lateral direction (11).

9. 9. A mobile storage module according to claim 8, characterized in that the storage surface (5) is provided with a plurality of sheet piles (2) in the longitudinal direction (10).

10. 10. Mobile storage module according to claim 8 or 9, characterized in that the storage surface (5) is inclined in the longitudinal direction (10).

11. 11. Mobile storage module according to claim 10, characterized in that the storage surface (5) is additionally inclined in the lateral direction (11).

12. 12. A mobile storage module according to claim 1, wherein the storage surface (5) comprises at least one groove (20) for accommodating one gripper fork (48) each.

13. 13. Mobile storage module according to claim 12, characterized in that the grooves (20) extend in the longitudinal (10) or transverse (11) direction of the storage surface (5).

14. 14. The mobile storage module according to claim 1, wherein the storage surface (5) is equipped with transport rollers (23), transport rollers (23) or transport balls (23) for the sheet piles (2).

15. Mobile storage module according to any one of claims 1 to 14, characterized in that the storage module (1) comprises a plurality of inclined storage surfaces (5).

16. 16. A system comprising at least one mobile storage module according to any one of claims 1 to 15, at least one first robot (40) with a first robot arm (44) for loading the storage module (1), and at least one second robot (42) with a second robot arm (45) for unloading the storage module (1).

17. 17. The system according to claim 16, comprising a docking module (53) for the mobile storage module (1).

18. 18. A method for operating a system according to claim 16 or 17, comprising:

1. A method for transporting a storage module (1) into a working area (41) of a first robot (40), loading at least one sheet pile (2) onto at least one storage surface (5) by the first robot (40) at its loading position (15), and transporting the storage module (1) into a working area (43) of a second robot (42), and unloading the storage module (1) from the storage surface (5) by the second robot (42) at its unloading position (16).

19. 19. The method according to claim 18, characterized in that the storage surface (5) is displaced from the loading position (15) to an intermediate position (17) by the first robot arm (44) or the second robot arm (45) or an automatic displacement of the storage surface (5) from the loading position (15) to the intermediate position (17) is caused.

20. 20. The method according to claim 18 or 19, characterized in that the storage surface (5) is displaced from the unloading position (16) to the intermediate position (17) by the first robot arm (44) or the second robot arm (45) or an automatic displacement of the storage surface (5) from the unloading position (16) to the intermediate position (17) is caused.

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