EP2412497A1 - Device and method for changing the top tool of a die cutting station of a sheet punching press - Google Patents

Abstract

The flat-bed sheet punching and embossing machine (100) comprises a feeder (1), a punching and embossing station (2), an arm (4), and a unit for changing an upper tool of the punching and embossing station. The upper tool is provided in a horizontal providing plane (r) by the changing unit. The flat-bed sheet punching and embossing machine has a height compensating drive (2.1). Independent claims are also included for the following: (1) a unit for changing an upper tool; and (2) a method for changing an upper tool.

Description

description

The invention relates to a flat bed sheet punching and / or embossing machine according to the preamble of claim 1, a device for changing the upper tool of a punching and / or stamping station according to the preamble of claim 6, and a method for changing an upper tool according to claim 10th

State of the art

As punching the cutting is referred to with closed geometric blank forms that can be circular, oval or polygonal and imaginary shapes of all kinds. Also the practices practiced in print finishing, such as punching with punch, corner punching and register punching are counted to this area. The punching takes place against a punching pad or against stamp, in some cases it is also shearing operations. Packaging materials made of paper, cardboard, cardboard or corrugated board are mainly punched in sheet format. When punching but also creasing lines or blind embossing can be introduced into the benefit. This complex process makes it indispensable to punch the sheets individually. Since the end products are sophisticated packaging in terms of technical and graphic design (such as packaging for cosmetics, cigarettes, pharmacy, food, etc.), special requirements are not only placed on the packaging materials themselves, but are also punching tools for optimum results required with the smallest tolerances and extremely precise and reliable punching machines. Flatbed punching best meets these demands. The printed sheets stacked on a pallet are fed to the punching machine. In the machine, the sheets to be punched are precisely aligned in an alignment device, taken over by a gripper carriage and positioned exactly in the punching device between a fixed undercounter and a vertical over a knee lever or eccentric upper table.

In known sheet punching and embossing machines, which are used for punching, embossing, breaking, if necessary. Nutzentrennen and storing sheets of paper, cardboard and the same, it is known to move the sheets by means of gripper carriage through the individual stations of the machine. A respective gripper carriage has a gripper bridge, to which grippers are fixed, which grasp the arches at a front end. A gripper carriage further has lateral carriages, which are connected to endless chains of the transport system and whereby the gripper carriage to be moved by the machine. By this type of movement of the sheets through the machine, a continuous work in the individual successively arranged stations of the machine, in particular punching, break-away and Nutzentrennstation allows.

Such a flat bed punch is for example from the DE 30 44 083 A1 known. The two tables are equipped with cutting and scoring tools or corresponding counter tools with which punched out of the cyclically guided between the table surface sheets the benefits and at the same time pressed the necessary for clean folding grooves. In the subsequent breakout the waste is removed by machine tools. Depending on the equipment of the machine finally the punched benefits can be separated in a designated Nutzentrenneinrichtung.

A well-known flatbed sheet punching machine, which from the DE-A-37 12 510 is known, is additionally equipped with a handling device to facilitate an operator tool change at the individual processing stations of the punching machine. The handling device is designed here as a semi-automatic lifting device, which is arranged on the operating platform of the machine and movable along it. The operator has the option of positioning the handling device at each of the processing stations and then extending a lifting fork to grip and position a tool. The handling device is associated with a tool magazine, from which the tools removed or in which the tools no longer required can be stored. The tool magazine is together with the handling device movable and in particular can be moved out of the operating range of the machine when it is not needed.

The DE 694 02 653 T2 describes a method for replacing punching tools in a crucible punch by means of a sliding carriage and the structure of this car. The chassis of the car is located below a pedestal on the operator side of the crucible punch; Above the pedestal is a device for receiving a punching tool to be changed. The receptacle is rotatable so that a punching tool can be provided in a horizontal position for tool change. The mobility of the carriage ensures that the carriage can be moved from an outermost position on the edge of the pedestal to a transfer position directly in front of the punching station of the crucible punch.

In the DE 695 06 031 T2 is also a device for tool change a crucible punch disclosed. In contrast to the device described above, this is on the pedestal on the operator side along the crucible punch, ie parallel to it, displaceable. The tool holder of the device is designed in such a way that at the same time two upper tools can be accommodated in it. By a rotational movement of the recording, one of the tools is moved to a transfer position, in which the punching tool can be inserted into the punching station of the crucible punch.

These known devices for changing punching tools are suitable for sheet punching machines with fixed upper table and hubbeweglichem undertable. By virtue of the fact that the upper table also referred to as the upper crucible remains in a fixed, fixed position, a punching tool can always be transferred at the same height level from the carriage or the device for changing over to the punching station. However, for use in sheet-top punching machines with a fixed upper table and stationary, stationary under-counter, the known changeover carriages are less suitable. The problem with this is that the upper table can be at any height level at the time of the tool change. The machine operator therefore has to change this tool manually from raise or lower the carriage or the device for changing to that height level in which an insertion of the punching tool into the punching station is possible.

task

The object of the present invention is therefore to describe a punching and / or embossing machine with a device for changing the upper tool of a punching and / or stamping station as well as a method for changing an upper tool, by which a simple and quick change of Upper tool of a punching and / or - embossing station with moving upper table allows.

This object is achieved by a flat bed sheet punching and / or embossing machine with the characterizing features of claim 1, by a device for changing the upper tool of a punching and / or stamping station with the characterizing features of claim 6, as well as by a A method of changing an upper tool according to claim 10.

The flatbed sheet punching and / or embossing machine according to the invention, referred to below as a punching machine for the sake of simplicity, is used for processing sheets of paper, cardboard, plastic and the like. The punching machine has a feeder for providing the sheets, a punching and / or stamping station for processing the sheets as well as a boom in which the processed sheets are collected. The punching machine may also have other processing stations, such as a stripping or a Nutzentrennstation. From a sheet transport system, the sheets are transported from the feeder to the boom through the punching machine. The punching and / or stamping station has a fixed, immovable undertable and a liftable overtable counter table. The upper table has a device for tool holder of an upper tool. Furthermore, the punching machine has a device for changing the upper tool of the punching and / or stamping station, wherein by means of this device, the upper tool is provided in a substantially horizontal, ie horizontal supply level for the tool change. Advantageously, the punching machine has a Height-compensation drive to minimize and eliminate a height difference between the providing level of the upper tool changing device and the height level of the tool-receiving device; in other words: to reduce the height difference to zero. This has the advantage that the upper tool to be changed is at the correct height level to ensure trouble-free transfer of the upper tool to the punching and / or embossing station: since the machine operator during tool change no height difference must be bridged, is on the one hand a faster tool change and on the other hand, the operator is exposed to a lower physical stress.

In a first embodiment of the height compensation drive is advantageously formed by a controllable lifting drive of the upper table, in particular by a direct drive. This can be carried out like the one in the DE 10 2008 011 051 A1 described drive, which is hereby incorporated by reference and made the subject of this description. The upper table can be stopped so exactly by the lifting drive that the device for tool holder, which is connected to the upper table, is in the deployment level of the device for changing the upper tool. Both the device for tool holder and the deployment level are therefore at the same height level.

In a second particularly advantageous and therefore preferred embodiment, the height compensation drive is designed as a separate, controllable drive. This drive is part of the device for changing the upper tool and makes it possible to raise the supply level of the device for changing such that the supply level is at the same height level as the device connected to the upper table tool receiving device. In an advantageous development of the height compensation drive is connected to a machine control and the punching and / or stamping station has a detection means for detecting the height level of the associated with the upper table means for tool holder. The detection means can be designed as a sensor: eg as an opto-electronic, potentiometric or inductive sensor. The signal generated by the detection means, which is the Height level of the device for tool holder is characterized, is passed to the machine control, so there to bridge the height difference, a target hub of the deployment level can be calculated and the drive of the device for changing the upper tool for executing this target stroke is controlled accordingly.

In a development, the device for the tool holder for receiving a closing frame with punching tool and the device for changing the upper tool for changing a closing frame with punching tool is formed. Thus, there is the change of a punching tool held in a closing frame. In contrast to a mere change of the punching tool, i. the carrier plate with the punching blades, a preparation of the punching tool in the closing frame is made possible while the punching tool is provided in the device for changing the upper tool. This advantageously allows additional time savings when setting up a punching tool in the course of a tool change.

The invention also relates to a device for changing the upper tool of a punching and / or stamping station of a flat-bed sheet punching and / or embossing machine. The punching machine can in particular be designed as described above. The top tool changing device may be positioned immediately adjacent the punching and / or stamping station and has a tool holder for receiving and providing the top tool in a substantially horizontal, i.e. horizontal deployment level. Advantageously, the device for changing the upper tool on a controllable height compensation drive, for the lifting movement of the tool holder of the device. This ensures that a height difference between the height level of the tool holder of the apparatus for changing the upper tool and the height level at which the upper tool can be inserted into the punching and / or embossing station can be canceled.

In an advantageous embodiment of the device according to the invention, this has a further drive, in particular a manual drive, for pivoting the tool holder from the substantially horizontal supply level into an in Essentially vertical parking position. The use of the manual drive has the advantage that with appropriate translation a quick pivoting movement is made possible and at the same time pinching or squeezing of the machine operator is prevented by the moving tool holder. While the tool holder is in its vertical parking position, a gallery or a pedestal located on the operator side of the punching machine can be used by the machine operator, that is to say the device for changing the upper tool is not an obstacle. The pivotability thus makes it possible in an advantageous manner The gallery or the pedestal can be built narrower, which material costs are saved and why only a smaller footprint for setting up the punching machine is needed.

In an additional development of the device according to the invention, the tool holder has in an advantageous manner mutually parallel rails, which allows simultaneous recording of two upper tools in mutually parallel planes. The tool holder is rotatably mounted and by a rotational movement through 180 °, the two upper tools can be moved alternately into the horizontal supply level. This version of the tool holder allows a particularly fast replacement of the upper tool.

The invention also relates to a method for changing an upper tool of a punching and / or stamping station with a liftable upper table. The stamping and / or embossing station may in particular be part of a punching machine as described above. The method comprises the following steps:

In a first step, a first upper tool is provided in a tool holder of a device for changing the upper tool in a supply plane. The device for changing the upper tool can in particular, as described above, be executed. In a second step, the punching and / or embossing station is stopped, ie the lifting movement of the upper table is suspended. Once the upper table has come to rest, in a next step, the height difference between the height level of the upper table, more precisely the height level of the tool holder of the upper table, and the provision level of the device for Changing the upper tool determined. Thereupon, either the upper table or the supply level is moved vertically by the determined height difference and the height difference is thereby compensated. In a next step, the transfer of a second upper tool from the punching and / or stamping station into the tool receptacle of the device for changing the upper tool can take place. To complete the tool change, the first upper tool is transferred from the tool holder of the device for changing the upper tool in the punching and / or stamping station in a last step.

In an advantageous and therefore particularly preferred development of the method according to the invention, the height difference between the height level of the upper table and the deployment level is determined by detecting, in particular measuring, the height level of the upper table and calculating the difference in height with the known height level of the deployment level. In the following step, the supply level then carries out a lifting movement about the calculated height difference. In the course of the actual tool change, i. after the transfer of the second upper tool from the punching and / or embossing station to the tool holder, the tool holder is rotated by 180 ° in order to spend the first upper tool to be moved into the punching and / or embossing station into the supply plane and thus transferring in the punching and / or stamping station to allow.

The described invention and the described advantageous developments of the invention are also in any combination with each other advantageous developments of the invention.

With regard to further advantageous embodiments of the invention, reference is made to the dependent claims and the description of an embodiment with reference to the accompanying drawings.

embodiment

Fig. 1

eine Flachbett-Bogenstanz- und/oder -prägemaschine in einer ersten Ausführungsvariante

Fig. 2

eine Flachbett-Bogenstanz- und/oder -prägemaschine in einer zweiten Ausführungsvariante

Fig. 3

eine Ansicht der erfindungsgemäßen Vorrichtung zum Wechseln des Oberwerkzeuges

Fig. 4

eine seitliche Ansicht der Vorrichtung aus Fig. 3

Fig. 5

die Wegschwenkbarkeit der Werkzeugaufnahme

Fig. 6

eine Detailansicht der Vorrichtung aus Fig. 3

Fig. 7

ein Anwendungsbeispiel der Vorrichtung aus Fig. 3

Fig. 8

eine alternative Ausführungsvariante der Vorrichtung zum Wechseln des Oberwerkzeugs

The invention will be explained in more detail with reference to an embodiment. It show in a schematic representation

Fig. 1

a flatbed sheet punching and / or embossing machine in a first embodiment

Fig. 2

a flatbed Bogenstanz- and / or embossing machine in a second embodiment

Fig. 3

a view of the device according to the invention for changing the upper tool

Fig. 4

a side view of the device Fig. 3

Fig. 5

the Wegschwenkbarkeit the tool holder

Fig. 6

a detailed view of the device Fig. 3

Fig. 7

an application example of the device Fig. 3

Fig. 8

an alternative embodiment of the device for changing the upper tool

In FIG. 1 the basic structure of a sheet punching and embossing machine 100 for punching, breaking, depaneling and storing sheets of paper, cardboard and the like is shown. The punching and embossing machine 100 has a feeder 1, a punching station 2, a breaking station 3 and a boom 4, which are supported and enclosed by a common machine housing 5. From one side, the so-called operator side, the processing stations 2, 3, 4 are accessible via a walk-on platform 5.1; on the opposite side, the so-called drive side, there is the drive train of the sheet punching and embossing machine 100.

The sheets 6 are separated by a feeder 1 from a stack, fed to the sheet transport system 7 and gripped by gripper bars of a gripper carriage 8 grippers at its front edge and intermittently in the sheet transport direction B through the various stations 2, 3 and 4 of the punching and embossing machine 100th pulled.
The sheet transport system 7 has a plurality of gripper carriages 8, so that a plurality of sheets 6 can be processed simultaneously in the various stations 2, 3 and 4. The Gripper carriage 8 can be driven by a chain drive or in an alternative embodiment by an electromagnetic linear drive with traveling field motors.

The punching station 2 consists of a lower crucible, a so-called. Subtable 9, and an upper crucible, a so-called. Obertisch 10. The upper table 10 is vertically reciprocating h stored and provided with a tool 30 with punching and Rillmessern. The upper table 10 is driven by a drive 2.1. This allows the upper table 10 to be stopped or positioned so that the tool-receiving device 30 is located exactly at the reference height r of a device for changing the upper tool 40 mounted in front of the stamping station 2. The device for changing the upper tool 40 is in Fig. 1 not shown, but as in Fig. 5 be shown represented. The lower table 9 is fixedly mounted in the machine frame 5 and provided with a counter-plate 20 to the punching and Rillmessern. In embossing, embossing tools, in particular in the form of so-called embossing dies, are used instead of the punching and scoring tools.

The gripper carriage 8 transports the sheet 6 from the punching and embossing station 2 in the subsequent breaking station 3, which is equipped with breakout tools. In the break-out station 3, the unwanted pieces of waste are pushed out of the sheet 6 downwards by means of the break-off tools, whereby the waste pieces 11 fall into a carriage-like container 12 inserted below the station.

From the breaking station 3, the sheet 6 enters the boom 4, where the sheet 6 is either simply stored, or at the same time there is a separation of the individual benefits of each sheet 6. The boom 4 may also include a pallet 13, on which the individual sheets 6 are stacked in the form of a stack 14, so that after reaching a certain stack height, the pallet 13 can be moved away with the sheet stack 14 from the field of punching and embossing machine 100 ,

The punching machine 100 according to Fig. 2 differs only in the formation of the punching station 2 of the punching machine 100 according to Fig. 1 : In the area of the upper table 10 of the Punching station 2, a sensor 17 is arranged, which detects the height level of the upper table 10, or more precisely: the height level of the device for tool holder 30. The measured signal is forwarded to a machine controller 15. There, the height difference between the measured height level and the reference height r of a device mounted in front of the punching station 2 for changing the upper tool 40 (frame changer) is calculated. The device for changing the upper tool 40 is in Fig. 1 not shown, but as in the Fig. 3 and 4 be shown represented. A height compensation drive 42.1 of the device 40 receives from the machine controller 15 a control pulse to raise the supply level r of the frame support (reference level).

FIG. 3 shows the device 40 according to the invention for changing the upper tool: the device 40 stands on the machine foundation 200 and has arms 47, which protrude through a mounted in front of a sheet punching machine 100 podium 5.1, also referred to as gallery. At the upper ends of the arms 47, the device 40 has two tool holders 45. A respective tool holder 45 is formed by rails 45.1, in which a in Fig. 3 not shown upper tool can be inserted. A respective rail 45.1 far on a plurality of rollers 45.2, on which an unillustrated upper tool can be moved with low friction. The upper tool holder 45 is located in a supply plane r, from which an upper tool (not shown) can be transferred to a punching and / or stamping station 2 of a punching machine 100. To spend the lower tool holder 45 and located in this tool holder upper tool in the supply level r, the unit of the two tool holders 45 is rotated by 180 °, as indicated by the double arrow d. In order to avoid unintentional slipping of a tool out of the rails 45.1, a securing element, designed here as a locking pin 45.3, is provided in each tool holder 45. This is manually operated.
The tool holder 45 is variable in its height level. By the motor 42.1, which acts as a height compensation drive, a stroke movement h 'of the tool holder 45 can be effected. The motor 42.1 is connected to a machine control 15 and is controlled by it (see Fig. 2 ).

To illustrate the structure of the device 40 for changing the upper tool, this is in Fig. 4 shown in a side view.

The lifting mechanism for carrying out the lifting movement h 'of the tool holder 45 results from the synopsis of Figures 3 and 6 , In the Fig. 6 shown unit of motor 42.1, the elements for transmitting the rotary motion 42.2, 44.1, 44.2, 44.3, 41.2 is rotatably mounted on the pivot 47 at an arm 47. To carry out a lifting movement h 'of the tool holder 45, the motor 42.1 experiences a control pulse from the machine control 15 as height compensation drive. The rotary motion of the motor 42.1 is transmitted to a threaded sleeve 44.1 via a spur gear 42.2. The threaded head of the displacement element 46.2 converts this rotational movement into a displacement movement of the displacement element 46.2. By guided in a slot 44.2 anti-rotation 44.3 a co-rotation of the main spindle 41.2 and the attached hand crank 41.1 is prevented. The displacement of the displacement element 46.2 causes a change in distance of the guide 46.1 from the pivot point 43 and thus a pivoting movement of the parallel arms 47, resulting in a stroke h 'of the tool holder 45. If the height level of the tool holder 45 is to be changed rapidly, it is possible to effect large strokes h 'by actuating the hand crank 41.1 and turning the main spindle 41.2.

After a closing frame was introduced with punching tool 30.1 from the tool holder 45 of the device 40 for changing the upper tool in the supply level r in the punching station 2 of a sheet punching machine 100, as in Fig. 5 shown, the device 40 with its tool holder 45 as indicated by the double arrow s, are pivoted. This ensures that the pedestal is 5.1 freely accessible by a machine operator and the device 40 is not an obstacle on the pedestal 5.1.

Fig. 7 shows an advantageous additional application of the device 40 for changing the upper tool. When changing a closing frame 31 with upper tool this is taken over from the punching station 2 protruding arms 2.2. To the Catching frame 31 against unwanted movement hangs this by means of an eyelet into a recess 2.3 of the tool take-up arm 2.2. If the anti-displacement protection is to be canceled, the eyelet with the closing frame 30.1 must be lifted out of the recess 2.3. This lifting can be accomplished by the device 40. For this purpose, the device 40 has an actuating button 42.11 in order to activate the height compensation drive 42.1 and thus lift the tool holder 45. As a result, the closing frame 30.1 is then released from the displacement protection of the depression 2.3.

Fig. 8 shows an alternative embodiment of the inventive device 40 for changing the upper tool 10.1. In contrast to the previously described variant, the lifting movement h 'of the tool holder 45 takes place in a modified manner:

At the lower end of an arm 47 of a respective pair of arms 47, a roller 51 is attached. The roller 51 rests on a rolling curve 50. By means of a motor 52, which is coupled to the rolling curves 50, a height adjustment 53 of the rolling curves 50 is possible and thus a stroke movement h 'of the tool holder. A displacement movement v of the tool holder 45, in order to spend this in a parking position in which the tool holder 45 requires only little space and the pedestal 5.1 is freely accessible to the operator, is achieved by rolling off the rollers 51 on the curves 50. As a result, the arms 47 are moved to a substantially vertical position. The rolling movement a can be performed by the operator simply by manual operation. As indicated by the double arrow d, then also the tool holder 45 can be pivoted even in a vertical position.

LIST OF REFERENCE NUMBERS

1

investor

2

Punching and / or embossing station

2.1

Drive upper table / height compensation drive

2.2

Tool take-up arm of punching station

2.3

Recess as a displacement protection

3

stripping

4

Outrigger, if necessary with Nutzentrennstation

5

machine housing

5.1

Pedestal / gallery

6

bow

7

Sheet transport system

8th

gripper carriages

9

Lower table / lower crucible

10

Upper table / upper crucible

10.1

upper tool

11

trimmings

12

container

13

palette

14

delivery pile

15

Control with interface and input devices / machine control

16

Feed table with a unit for aligning the bow

17

Detector height level upper table (sensor)

20

lower tool

30

Device for tool holder of an upper tool (punching tool)

30.1

Closing frame with punching tool

40

Device for changing the upper tool (closing frame changer)

41.1

winch

41.2

main spindle

42.1

Motor / height compensation drive

42.11

Operating switch for motor

42.2

spur gear

43

pivot point

44.1

threaded sleeve

44.2

Long hole

44.3

twist

45

tool holder

45.1

Guide rail with rollers

45.2

roll

45.3

safety pin

46

guide

47

poor

48

Hand crank for pivoting movement

50

rolling curve

51

role

52

Motor for height adjustment of the rolling curves

53

height adjustment

54

attack

100

Flatbed sheet punching and / or embossing machine (punching machine)

200

foundation

a

rolling

d

rotary motion

H

Lifting movement upper table

H'

Lifting motion Tool holder with deployment level

r

Deployment level / reference height of the frame changer

s

pivotal movement

v

displacement movement

B

Sheet transport direction

e

Sheet transport plane

Claims (11)

Flatbed sheet punching and / or embossing machine (100) for processing sheets (6) of paper, cardboard, plastic and the like
with a feeder (1), a punching and / or embossing station (2), a boom (4) and a device (40) for changing the upper tool (30.1) of the punching and / or embossing station (2), wherein by means of Device (40) the upper tool (30.1) in a substantially horizontal supply level (r) is provided, and wherein the punching and / or embossing station (2) has a fixed, immovable lower table (9) and a lifting, against the lower table (9 ) undeliverable upper table (10), wherein the upper table (10) has a device (30) for tool holder,
characterized,
that the flat-bed-sheet punching and / or embossing machine (100) comprises a height adjustment drive (2.1; 42.1) has, in order to eliminate a height difference between the ready placement plane (r) and the height level of the device to the tool holder. Flatbed sheet punching and / or embossing machine according to claim 1,
characterized,
in that the height compensation drive (2.1) is formed by a controllable lifting drive of the upper table (10) and in that the upper table (10) of the lifting drive (2.1) is so durable that the device (30) for tool holder in the supply level (r) of the Device (40) for changing the upper tool is located. Flatbed sheet punching and / or embossing machine according to claim 1,
characterized,
that the height adjustment drive (42.1) is provided as a separate, controllable drive as part of the device (40) for changing the upper tool executed and the standby setting plane (r) is such liftable (h '), that the ready placement plane (r) at the same height as the Device (30) for receiving tools for punching and / or embossing station (2). Flatbed sheet punching and / or embossing machine according to claim 3,
characterized,
in that the height-compensation drive (42.1) is connected to a machine control (15), that the punching and / or embossing station (2) has a detection means (17), in particular a sensor, for detecting the height level of the tool-receiving device (30) and, that
the signal of the detection means (17) is passed to the machine control (15) for calculating a setpoint stroke of the supply level (r). Flatbed sheet punching and / or embossing machine according to one of the preceding claims,
characterized,
in that the device (30) for tool holder for receiving a closing frame (30.1) with punching tool and
the device (40) for changing the upper tool for changing a closing frame (30.1) is formed with a punching tool. Device (40) for changing the upper tool of a punching and / or embossing station (2) of a flatbed sheet punching and / or embossing machine (100), in particular according to one of claims 3 to 5, wherein the device (40) for changing the Upper tool is immediately adjacent to a punching and / or embossing station (2) of the flatbed Bogenstanz- and / or embossing machine (100) positionable and a tool holder (45) for receiving and providing the upper tool (30.1) in a substantially horizontal deployment plane (r) owns
characterized,
that the device (40) for changing the upper die has a controllable height adjustment drive (42.1) for the lifting movement (h ') of the tool holder (45). Device for changing the upper tool according to claim 6,
characterized,
in that the device (40) for changing the upper tool has a further drive (41.1), in particular a hand drive, for pivoting (s) the tool holder (45) into a substantially vertical parking position. Device for changing the upper tool according to claim 6,
characterized,
that the device (40) for changing the upper tool (10.1) comprises a chute device (50, 51, 54) for shifting the tool holder (45) in a parking position. Device for changing the upper tool according to claim 6 or 7 or 8,
characterized,
in that the tool holder (45) has rails (45.1) arranged parallel to one another for the parallel and simultaneous reception of two upper tools (30.1) and that the tool holder (45) is rotatable by 180 ° (d). A method for changing an upper tool (30.1) of a punching and / or embossing station (2) with a lifting upper table (10), in particular a flat-bed sheet punching and / or embossing machine (100) according to one of claims 3 to 5, with subsequent steps: a) providing a first upper tool (30.1) in a tool holder (45) of a device (40) for changing the upper tool, in particular according to one of claims 6 to 8 b) stopping the punching and / or embossing station (2) c) determining the height difference between the height level of the upper table and the height level of the supply level (r) of the device (40) for changing the upper tool d) vertical movement of the upper table (10) or the supply level (r) to the specific height difference e) transfer of a second upper tool (30.1) from the punching and / or embossing station (2) to the tool holder (45) of the device (40) for changing the upper tool f) transfer of the first upper tool (30.1) in a supply plane (r) of the tool holder (45) of the device (40) for changing the upper tool to the punching and / or embossing station (2) A method for changing an upper tool (30.1) according to claim 9, wherein the flat-bed sheet punching and / or embossing machine (100) according to claim 3 to 5 and the apparatus (40) for changing an upper tool according to claim 6 to 8 are carried out in step c) the height level of the upper table (10) is detected and thus the height difference is calculated, wherein in step d) the supply level (r) performs a lifting movement (h ') and wherein between step e) and step f) the tool holder (45 ) is rotated 180 ° (d).

Images