EP3153286B1 - Bearbeitung von werkstücken mittels matrizen, die mit einem ausgleichselement ebenenkompensiert sind - Google Patents

Bearbeitung von werkstücken mittels matrizen, die mit einem ausgleichselement ebenenkompensiert sind Download PDF

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Publication number
EP3153286B1
EP3153286B1 EP15020182.0A EP15020182A EP3153286B1 EP 3153286 B1 EP3153286 B1 EP 3153286B1 EP 15020182 A EP15020182 A EP 15020182A EP 3153286 B1 EP3153286 B1 EP 3153286B1
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EP
European Patent Office
Prior art keywords
die
compensation element
processing
die processing
platen
Prior art date
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Active
Application number
EP15020182.0A
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English (en)
French (fr)
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EP3153286A1 (de
Inventor
Bernd ANDREE
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Bobst Mex SA
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Bobst Mex SA
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Publication date
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Priority to EP15020182.0A priority Critical patent/EP3153286B1/de
Priority to ES15020182T priority patent/ES2818077T3/es
Publication of EP3153286A1 publication Critical patent/EP3153286A1/de
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Publication of EP3153286B1 publication Critical patent/EP3153286B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/02—Perforating by punching, e.g. with relatively-reciprocating punch and bed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4409—Cutters therefor; Dies therefor having die balancing or compensating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4418—Cutters therefor; Dies therefor combining cutting and embossing operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/38—Cutting-out; Stamping-out
    • B26F1/44—Cutters therefor; Dies therefor
    • B26F2001/4463—Methods and devices for rule setting, fixation, preparing cutting dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/142—Cutting, e.g. perforating, punching, slitting or trimming using presses or dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/74—Auxiliary operations
    • B31B50/88—Printing; Embossing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles

Definitions

  • the present invention relates to the technical field of flat bed sheet material die punching, cutting and/or embossing machines.
  • the present invention relates to a die processing machine, a die processing system and a method for processing workpieces by means of die processing.
  • a die processing is typically carried out within a die cutting, die punching or die embossing machine, hereinafter denominated a die processing machine.
  • a die processing machine comprises a die cutting, die punching or die embossing tool, hereinafter denominated die processing tool, in which several dies are provided representing the tools for processing the workpiece.
  • denominated die processing tool By means of an appropriate lifting system the die processing tool is pressed against a back plate of the die processing machine, wherein the respective workpiece is located in between the die processing tool and the back plate.
  • the dies penetrate at least partially the workpiece.
  • the dies make a mechanical contact with the back plate. It is hereby of primary importance that all edges of the involved cutting dies make contact with the back plate simultaneously at the end of the relative movement between the die processing tool and the back plate. Otherwise, a number of cuts or punches will be incomplete.
  • die embossing wherein for a good embossing quality it is also important that all involved dies penetrate the workpiece to the same extent.
  • a compensation element underlying the dies at their side facing away from the its die edges.
  • An appropriate compensation element comprises a typically spatially varying thickness such that each die has a proper level.
  • a compensation element typically comprises a base sheet and several local compensation portions attached on the surface of the base sheet. The local compensation portions may be realized by means of stripes, wherein each stripe is assigned to at least one die and has an appropriate thickness for leveling the respective die. Compensation elements may be made of polyurethane, metal, tetrafluoroethylene, paper or a combination thereof.
  • EP 2 705 936 A1 discloses a method for determining a machine dependent compensation requirement which is supposed to be provided by a compensation element.
  • the machine dependent compensation requirements are determined with the help of a computer implemented analysis of the thickness variation of various appropriate compensation elements, which have been and/or which are used for processing different types of workpieces. In this analysis an averaging procedure is carried out by means of which workpiece dependent compensation requirements are eliminated.
  • the thickness variation of the compensation elements may be accomplished by means of a 3D scanner.
  • EP 2 327 521 A1 discloses a method for level compensating the edges of dies of a die processing tool, wherein a pressure distribution sensor is employed for measuring the spatial distribution of the pressure being associated with different dies when using the die processing tool for cutting or embossing a workpiece. Based on the respective measurement results a compensation element with a proper thickness distribution is produced by means of an additive manufacturing procedure, wherein the compensation element is made from one piece by setting up layer structures or by selectively removing layer structures. Compared to a pure manual making of a proper compensation element the disclosed method provides for a partial automation.
  • a die processing machine for processing a workpiece, in particular a flat bed die cutting, die punching and/or die embossing machine for processing cardboard or other sheet like material being used for packages for articles.
  • the die processing machine comprises (a) a first platen; (b) a second platen; (c) a lifting system being mechanically connected with the first platen and/or with the second platen for providing a relative movement between the two platens along a predetermined direction; (d) a die processing tool being located in between the two platens and being mechanically connected with the first platen, wherein the die processing tool comprises at least two dies; (e) a back plate being located in between the two platens and being mechanically connected with the second platen, wherein a workpiece is insertable in between the back plate and the die processing tool; (f) a compensation element being located in between the first platen and the die processing tool for providing an appropriate leveling of edges of the at least two dies with respect to the pre
  • the described die processing machine is based on the idea that during its operation it can be monitored whether the pressure and/or the force being assigned to the dies when coming into contact with the workpiece is still within acceptable limits or exhibits a unacceptable spatial variation for instance due to an unwanted wear which has been developed during a previous operation of the processing machines, wherein typically a plurality of workpieces has been processed.
  • the non-detachably mounted pressure distribution sensor in connection with the described data processing unit allows for a fast determination of geometric data for an appropriate (further) compensation element which, for the processing of subsequence workpieces, can be used in order to achieve an at least partially uniform and/or, compared to the previously used compensation element, an improved uniformity of pressure and/or forces being exerted onto the various dies.
  • the mechanical action sensor may be configured for measuring (i) the mechanical action to the respective die or (ii) a mechanical interaction between the respective die and the first platen.
  • the mechanical action respectively the mechanical interaction may occur in particular along the predetermined direction, when, driven by the lifting system, the first platen and the second platen move towards each other and sandwich the workpiece in between.
  • processing region may particularly denote the spatial region of the mechanical interaction between (the edges of) the dies and the workpiece. Depending on the type of processing this mechanical interaction may result in a partial or in a complete penetration of the dies into the workpiece.
  • the number and/or the shape of the dies being used may depend on the specific application.
  • the more complicated the geometric structure of the processing regions is the higher is the number of the dies and/or the higher is the complexity of the shape of the edges of the dies.
  • the edges of the dies exhibit a simple geometric structure, in particular a straight line, and, depending on the structure of the processing regions the number of the employed dies is correspondingly higher.
  • connection may mean a direct or an indirect connection between the respective elements.
  • An indirect connection may mean that one or more intermediate elements are located in between. This holds in particular for mechanical connections. However, the same considerations also apply for the electric, electronic and/or optical connection respectively coupling between the mechanical action sensor and the data processing unit.
  • the first platen and/or the second platen may be any mechanical structure which is formed in such a manner and which comprises a sufficient mechanical stability such that the mechanical arrangement comprising the die processing tool, the back plate and the respective workpiece in between can be pressed together such that the desired processing of the workpiece is accomplished.
  • the first platen and/or the second platen may be for instance realized by means of simple block or cuboid structures.
  • the first platen and/or the second platen is made from a metallic material.
  • the described data processing unit being (directly or indirectly) coupled with the permanently implemented mechanical action sensor allows for producing the geometric data being necessary for forming an appropriate (further) compensation element yielding a higher quality of the processing of the workpiece.
  • an appropriate (further) compensation element may be produced already during the operation of the described die processing machine. This results in a significant reduction of downtimes of the machine and, as a consequence, in a higher production efficiency for packages for (consumer) articles.
  • processing procedures may relate to a die cutting, a die embossing or to a combination of die cutting and die embossing.
  • processing procedures these per se well known procedures are hereinafter called processing procedures.
  • a high quality of the workpiece processing can be guaranteed. Specifically, if it turns out that the provided geometric data for the further compensation element do not significantly differ from the geometric data of the compensation element being currency used for processing workpieces, it can be assumed that the die processing machine works in an operational mode yielding a high quality processing of workpieces.
  • the mechanical action sensor is a pressure distribution sensor being non-detachably located in between the two platens and being configured for providing pressure data signals which are indicative for a spatial pressure distribution given in between the two platens.
  • the pressure distribution sensor may be for instance a layer or a foil of a pressure sensitive material, which is electrically connected with an appropriate readout device allowing for obtaining a distribution of pressure values, wherein each pressure value is assigned to a certain surface portion of the pressure distribution sensor and/or to a certain die or at least a certain edge portion of a die.
  • the pressure distribution sensor may comprises for instance a piezoelectric material, which responds to an applied pressure by providing a voltage difference between two opposing surfaces of the preferably layered and, if appropriate, structured piezoelectric material.
  • other types of (two-dimensional or laminar) pressure distribution sensors may be employed such as piezo-resistive pressure distribution sensors, capacitive pressure distribution sensors, inductive pressure distribution sensors or combinations thereof.
  • the first platen is an upper platen and the second platen is a lower platen.
  • the term "upper” and “lower” relate to the direction of gravity and to an orientation of the die processing machine in which orientation the die processing machine is operating.
  • the above mentioned predetermined direction is a vertical direction which may be in particularly denominated as a z-direction of an cartesian coordinate system wherein an x-direction and a ⁇ -direction are aligned horizontally and are both perpendicular to the z-direction.
  • the movement of the first platen and/or the second platen in a vertical direction may provide the advantage that the described die processing machine can be implemented as a working station in a production line which is capable to manufacture finished packages.
  • a production line may in particular includes an appropriate folding machine which, with respect to a workpiece transport direction, is connected downstream of the described die processing machine and which is configured for folding the processed two-dimensional workpieces into an appropriate three-dimensional package.
  • the first platen is mounted stationary to the chassis and the lifting system is configured for moving solely the second platen along the predetermined direction.
  • the stationary mounting of the first platen to the chassis can be realized by a direct attachment of the first platen at (a portion of) the chassis.
  • an indirect attachment via one or more intermediate (mechanical) elements is possible.
  • the lifting system is further configured for proving a tilt movement between the two platens.
  • This may provide the advantage that the force application to at least one of the platens can be modified.
  • An application specific appropriate force application may result in an optimized distribution of pressure respectively force within the entire plane of the (flat) workpiece and in particular within the processing regions. As a consequence, a high quality workpiece processing can be achieved.
  • the tilt movement may be characterized in particular by a pivoting movement around an axis being perpendicular to the predetermined direction.
  • a pivoting movement around an axis being perpendicular to the predetermined direction.
  • other non-linear movements of at least one platen may be generated by the lifting system.
  • the lifting system comprises a lever arrangement.
  • This may provide the advantage that not only a very precise or controlled but also a strong movement of the at least one platen can be generated. A strong or powerful movement can be realized even with a comparatively weak actuator if the levers of the lever arrangement are designed in such a manner that a favorable relationship of the levers will be achieved.
  • a lever arrangement may in particular be of advantage if the above described tilting movement is to be realized.
  • the lever arrangement may be driven not only by one but, depending on the desired degree of (tilt) movement, by a larger number of actuator means.
  • Suitable actuator means may be in particular electric motors.
  • the mechanical action sensor is located in between the first platen and the die processing tool. This may provide the advantage that the pressure respectively the force acting onto the various dies when processing the workpiece can be measured very precisely. As a consequence, the geometric data provided by the data processing unit for the further compensation element will precisely characterize a further compensation element being optimized for yielding a high quality workpiece processing.
  • the mechanical action sensor is located in between the first platen and the compensation element. This may provide the advantage of a further optimized workpiece processing when using a further compensation element produced on the basis of the geometric data provided by the data processing unit.
  • a die processing system for processing a workpiece.
  • the provided die processing system comprises (a) a die processing machine as described above; and (b) an automatic machining device for automatically producing the further compensation element based on the provided geometric data for the further compensation element.
  • the automatic machining device is mounted to the die processing machine.
  • the provided die processing system is based on the idea that a reliable and close functional connection or interaction between the die processing machine and the described automatic machining device can be used for efficiently processing workpieces with a high quality. Thereby, it can be ensured that the workpiece processing is always carried out with an appropriate compensation element. Due to a small spatial and functional separation between the die processing machine and the automatic machining device the downtime of the workpiece processing, which downtime is associated with a production and a change of the compensation element, can be significantly reduced. As has already been mentioned above, the downtime reduction may be in particular of importance in case the number of workpieces of a specific type to be processed is comparatively small such that it is necessary to replace or change the compensation element frequently. However, also the downtime being associated with a replacement of a compensation element due to a developed wear of the (edges of the) dies can be reduced.
  • mounted to may particularly denote a mechanical connection wherein the geometric or spatial relationship between (a chassis of) the die processing machine and (a chassis of) the automatic machining device is fixed at least during the operation of the die processing system. Thereby, this operation includes not only the processing of workpieces but also, at least from time to time, an automatic production of (further) compensation elements.
  • the automatic machining device may comprise a control unit for controlling the production of the further compensation element.
  • the data processing unit of the die processing machine and the control unit of the automatic machining device are communicatively coupled with each other by means of an appropriate data interface.
  • the data processing unit and the control unit may also be realized by means of a single processor device.
  • the automatic machining device is configured for producing the further compensation element by means of an additive manufacturing procedure.
  • the automatic machining device comprises a three-dimensional printer. This may provide the advantage that an in the meantime well known and established technology can be employed in order to realize the desired automatic machining device allowing for a fast, reliable, and precise production of at least one (further) compensation element.
  • the die processing system further comprises a handling system for transferring a produced further compensation element from the automatic machining device to the die processing machine.
  • a handling system for transferring a produced further compensation element from the automatic machining device to the die processing machine.
  • the handling system may be comprise at least one gripper being configured for temporarily holding the produced further compensation element.
  • the gripper may be moved by an appropriate robot means.
  • the operation of the entire handling system may be controlled by a control unit.
  • the control unit may be communicatively coupled with the data processing unit of the described die processing machine.
  • the control unit for the handling system may be implemented by means of hardware and/or software by the data processing device of the described die processing machine.
  • the handling system is configured also for removing the so far used compensation element from the processing region. This may provide the advantage that a complete compensation element exchange can be realized fully automatically without any user operation. Alternatively, a further handling system can be provided which is responsible for removing the so far used compensation element.
  • the downtime of the die processing machine can be reduced by 50% as compared to the downtimes which are unavoidable when using known technology for producing compensation elements in an at least partially manual manner.
  • the handling system is configured for transferring the die processing tool between the die processing machine and the automatic machining device.
  • the die processing tool may be used as the support platform.
  • it can be easily ensured that the further compensation element is precisely aligned with the die processing tool. Specifically, it can be ensured that the (further) local compensation portions of the further compensation element are precisely aligned with the dies of the die processing tool. There will be no more a need for aligning the further compensation element with the processing tool within the die processing machine.
  • a method for processing workpieces in particular by flat bed die cutting, die punching and/or die embossing a cardboard or other sheet like material being used for packages for articles.
  • the described method comprises the steps of (a) processing a first workpiece by means of the die processing ma-chine as described above; (b) transferring the provided geometric data for the further compensation element to an automatic machining device; (c) producing the further compensation element based on the provided geometric data; (d) removing the compensation element which has been used for processing the first workpiece from a processing region of the die processing machine; (e) transferring the produced further compensation element into the processing region; and (f) processing a second workpiece by means of the die processing machine by utilizing the further compensation element.
  • the described production and exchange of the compensation element wherein the compensation element which has been used for processing at least one first workpiece is exchanged by the further compensation element which is used for processing at least one second workpiece, can be realized in a fully automatic manner. This does not only hold for transferring the further compensation element but also for producing the further compensation element by means of the described automatic machining device. Due to a fully automatically replacement of compensation elements the downtime of the die processing machine can be reduced significantly compared to a known at least partial manual production and exchange of compensation elements.
  • the mentioned downtime reduction may be of particular relevance if the first workpiece is of a first type and the second workpiece is of a second type being different to the first type.
  • a compensation element replacement wherein the first compensation element with a first geometry is replaced by the second compensation element with a second geometry being different to the first geometry, is essential in order to allow for a high quality workpiece processing.
  • the downtime reduction may also be achieved if both workpieces are of the same type and a compensation element replacement is necessary due to a wear of the dies of the die processing tool, which wear may have been occurred during the processing of a plurality of first workpieces.
  • producing the further compensation element comprises an additive manufacturing procedure.
  • This may provide the advantage that a further compensation element with an appropriate thickness distribution can be produced in a fast and effective manner.
  • the additive manufacturing procedure may involve a three-dimensional printing of at least of (further) compensation element.
  • the mentioned additive manufacturing preferably only the local compensation portions are produced and formed on a foil like base sheet.
  • the combination of the base sheet and the local compensation portions formed thereon represents the compensation element.
  • the local compensation portions each having an appropriate thickness are formed locally on or over certain regions of the base sheet. This may provide the advantage that the three dimensional printing process can be completed in a comparatively fast manner such that the (further) compensation element can be manufactured in a fast, reliable and efficient manner. This contributes to a significant reduction of downtimes of the die processing machine.
  • spatially relative terms such as “front” and “back”, “above” and “below”, “left” and “right”, et cetera are used to describe an element's relationship to another element(s) as illustrated in the figures.
  • the spatially relative terms may apply to orientations in use which differ from the orientation depicted in the figures.
  • All such spatially relative terms refer to the orientation shown in the figures only for ease of description and are not necessarily limiting as an apparatus according to an embodiment of the invention can assume orientations different than those illustrated in the figures when in use.
  • FIG. 1 shows a die processing machine 100 according to a preferred embodiment of the invention.
  • the die processing machine 100 comprises a chassis 102 and an upper (first) platen 110 stationary attached to the chassis 102.
  • the die processing machine 100 according to the embodiment described here comprises a (second) lower platen 115 and a lifting system 120.
  • the lifting system 120 is configured for vertically moving the lower platen 115 along the z direction.
  • the lifting system 120 is realized by means of a lever arrangement 122 comprising a not further specified crank mechanism or cam mechanism.
  • the die processing machine 100 further comprises a die processing tool 130 which, depending on the specific application, is capable of die cutting, creasing, perforating or embossing a workpiece 190.
  • the workpiece is the cardboard 190 being used for a non-depicted package for a consumer article.
  • the die processing tool 130 comprises several dies 132, the back sides of which are embedded within a tool bed 136.
  • the tool bed 136 may be made from wood or a combination of wood and other materials.
  • FIG. 1 a bottom plate of this tool frame is denominated with reference numeral 138.
  • the die processing tool 130 may be firmly attached to the bottom plate 138 by means of screwing.
  • the die processing machine 100 comprises a back plate 140 which, during processing a workpiece, is approached by the edges of the dies 132. At the end of a die cutting procedure the edges of the dies 132 get into mechanical contact with the surface of the back plate 140. Further, according to the embodiment described here an optional support plate 142 is provided between the lower platen 115 and the back plate 140.
  • a compensation element 150 is used for height leveling the edges of the dies 132 such that a uniform processing pattern will develop when processing the workpiece 190.
  • the compensation element 150 comprises different local compensation portions 154 formed on a base sheet 152. The thickness respectively the height of each local compensation portion 154 is assigned to the respective die 132. According to the embodiment described here the compensation element 150 is protected by a protection sheet 158.
  • the die processing machine 100 further comprises a mechanical action sensor which, in the embodiment described here, is realized by means of a pressure distribution sensor 160.
  • the pressure distribution sensor 160 collects with a spatial resolution the pressure being present between (a) the upper platen 110 and (b) the die processing tool 130 and specifically the back side of the dies 132. It is clear that when there is a uniform pressure distribution the compensation element 150 comprises an optimal geometry. By contrast thereto, when there is a strong pressure variation between the areas being assigned to different dies 132, the compensation element 150 is not or no more appropriate for allowing a high quality processing of the workpiece 190.
  • the die processing machine 100 furthermore comprises a data processing unit 165 which is connected with the pressure distribution sensor 160 by means of a data line being illustrated in Figure 1 with a dashed line.
  • FIG. 2 illustrates the operation of the die processing machine 100.
  • Electric motors M1 and M2 which are schematically depicted in Figure 2 , cooperate with the lever arrangement 122 such that the lower platen 115 is moved upwards along the z direction.
  • the following description of the operation of the die processing machine 100 starts with a determination of a geometry of a compensation element which solely provides for a die level compensation being related to the respective die processing machine 100 without taking into account the (type of the) respective workpiece 190 to be processed. As a consequence, for determining the machine dependent compensation requirements no workpiece is inserted in between the two platens 110 and 115.
  • the two electric motors M1 and M2 are driven in such a manner that the processing pressure is automatically increased up to an operational point at which the linear increase of the processing pressure turns over to be a super-proportional increase.
  • the dies 132 firstly come into mechanical contact with the back plate 140.
  • the pressure distribution sensor 160 which is firmly attached to or integrated within the upper platen 110, extends over the entire surface (the normal vector of which being parallel to the z-direction) of the upper platen 110. Thereby, in particular the compensation requirement caused by deformations of the two platens 110 and 115 is determined. However, also a potential non-perfect geometry of the die processing tool 130 will be taken into account.
  • the determined pressure data will be transferred to the data processing device 165.
  • the data processing device 165 will compute appropriate driving signals which, when being applied to the two electric motors M1 and M2, will cause a specific movement of the lower platen 115, which movement will result in the smallest possible compensation requirements. Then, the distance between the upper platen 110 and the lower platen 115 is measured.
  • the so called local compensation requirements are determined which depend also on the type of workpiece.
  • the respective workpiece 190 has to be inserted into the processing region between the die processing tool 130 and the back plate 140.
  • the workpiece 190 is transferred into the processing region by means of a non-depicted handling equipment. It is clear that the workpiece 190 represents an additional mechanical resistance which results (a) in an additional elastic deformation and stretching of the involved components of the die processing machine 100 as well as (b) in an increase of the distance between the two platens 110 and 115.
  • Figure 3 schematically illustrates the production of a further compensation element 350 on the basis of geometric data defining the optimal geometric design for the further compensation element 350.
  • an additive manufacturing procedure is used for forming the corresponding further local compensation portions 354 onto a further base sheet 352.
  • Figure 4 shows a die processing system 4000 comprising the die processing machine 100 and an automatic machining device 470 being mounted to the die processing machine 100.
  • the die processing system 4000 comprises a three-dimensional printer which is schematically depicted by its printer head 472.
  • the printer had 472 comprises a nozzle 473 with which an appropriate material for the (further) local compensation portions 354 is applied onto the further base sheet 352.
  • the printer head 472 can be moved in a controlled manner by means of a non-depicted gantry system.
  • the further compensation element 350 respectively the further local compensation portions 354 are formed while the further base sheet 352 is supported by the die processing tool 120 respectively by the above described bottom plate 138. This may provide the advantage that it can be ensured very easily that the further local compensation portions 354 are formed exactly at the positions where they are needed for providing for an appropriate level compensation of the blades 132.
  • a handling system 480 which is configured for transferring the die processing tool 130 together with the produced further compensation element 350 from the automatic machining device 472 the die processing machine 100.
  • the handling system 480 might also be able to transfer the die processing tool 130 together with the previously used compensation element 150 from the die processing machine 100 to the automatic machining device 470.
  • the handling system 480 or an additional handling system can be used for removing or discharging the previously used compensation element 150. In this way a fully automated production and replacement of compensation elements can be accomplished. This results in a significant reduction of downtimes of the die processing machine 100.
  • a further advantage of this automatization is that it is no more necessary to entrust a skilled operator for performing the manual steps which would be necessary when carrying out such a compensation element replacement manually.

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Claims (15)

  1. Stanz-Präge-Bearbeitungsmaschine (100) zum Bearbeiten eines Werkstücks (190), insbesondere eine Flachbettstanz-, Lochstanz- und/oder Prägemaschine zum Bearbeiten von Karton oder anderem blattförmigen Material, das für Verpackungen für Gegenstände verwendet wird, wobei die Stanz-Präge-Bearbeitungsmaschine (100) Folgendes umfasst:
    eine erste Formaufspannplatte (110);
    eine zweite Formaufspannplatte (115);
    ein Hubsystem (120) zum Bereitstellen einer Relativbewegung zwischen den beiden Formaufspannplatten (110, 115) entlang einer vorbestimmten Richtung (z);
    ein Stanz-Präge-Bearbeitungswerkzeug (130), das sich zwischen den beiden Formaufspannplatten (110, 115) befindet und mechanisch mit der ersten Formaufspannplatte (110) verbunden ist, wobei das Stanz-Präge-Bearbeitungswerkzeug (130) mindestens zwei Stanz-Präge-Stempel (132) umfasst;
    eine Rückplatte (140), die mechanisch mit der zweiten Formaufspannplatte (115) verbunden ist,
    wobei ein Werkstück (190) zwischen der Rückplatte (140) und dem Stanz-Präge-Bearbeitungswerkzeug (130) eingeschoben werden kann;
    dadurch gekennzeichnet, dass
    sich ein Kompensationselement (150) zwischen der ersten Formaufspannplatte (110) und dem Stanz-Präge-Bearbeitungswerkzeug (130) befindet, um eine geeignete Nivellierung der Kanten der mindestens zwei Stanz-Präge-Stempel (132) in Bezug auf die vorbestimmte Richtung (z) bereitzustellen;
    sich ein Sensor (160) für mechanische Einwirkungen unlösbar zwischen den beiden Formaufspannplatten (110, 115) befindet und so konfiguriert ist, dass er Datensignale für mechanische Bewegungen bereitstellt, welche die Größenordnungen mechanischer Einwirkungen anzeigen, die den mindestens zwei Stanz-Präge-Stempeln (132) bei der Bearbeitung des Werkstücks (190) zugeordnet werden; und
    eine Datenverarbeitungseinheit (165) zur Verarbeitung der Datensignale für mechanische Bewegungen so konfiguriert ist, dass geometrische Daten für ein weiteres Kompensationselement (350) bereitgestellt werden, die bei der Bearbeitung weiterer Werkstücke (190) dazu führen, dass den mindestens zwei Stanz-Präge-Stempeln (132) eine zumindest teilweise gleichmäßige Druckverteilung in Bearbeitungsbereichen zugeordnet wird.
  2. Stanz-Präge-Bearbeitungsmaschine nach dem vorstehenden Anspruch, wobei der Sensor für die mechanische Einwirkungen ein Druckverteilungssensor (160) ist, der sich unlösbar zwischen den beiden Formaufspannplatten (110, 115) befindet und so konfiguriert ist, dass er Druckdatensignale bereitstellt, die eine räumliche Druckverteilung zwischen den beiden Formaufspannplatten (110, 115) anzeigen.
  3. Stanz-Präge-Bearbeitungsmaschine nach einem der vorstehenden Ansprüche, wobei
    die erste Formaufspannplatte eine obere Formaufspannplatte (110) und die zweite Formaufspannplatte eine untere Formaufspannplatte (115) ist.
  4. Stanz-Präge-Bearbeitungsmaschine nach einem der vorstehenden Ansprüche, weiter umfassend
    ein Untergestell (102),
    wobei die erste Formaufspannplatte (110) stationär an dem Untergestell (102) montiert ist und das Hubsystem (120) so konfiguriert ist, dass es nur die zweite Formaufspannplatte (115) entlang der vorbestimmten Richtung (z) bewegt.
  5. Stanz-Präge-Bearbeitungsmaschine nach einem der vorstehenden Ansprüche, wobei
    das Hubsystem (120) weiter so konfiguriert ist, dass es eine Kippbewegung zwischen den beiden Formaufspannplatten (110, 115) bereitstellt.
  6. Stanz-Präge-Bearbeitungsmaschine nach einem der vorstehenden Ansprüche, wobei
    das Hubsystem (120) eine Hebelanordnung (122) umfasst.
  7. Stanz-Präge-Bearbeitungsmaschine nach einem der vorstehenden Ansprüche, wobei
    sich der Sensor (160) für mechanische Einwirkungen zwischen der ersten Formaufspannplatte (110) und dem Stanz-Präge-Bearbeitungswerkzeug (130) befindet.
  8. Stanz-Präge-Bearbeitungsmaschine nach einem der vorstehenden Ansprüche, wobei
    sich der Sensor (160) für mechanische Einwirkungen zwischen der ersten Formaufspannplatte (110) und dem Kompensationselement (150) befindet.
  9. Stanz-Präge-Bearbeitungssystem zum Bearbeiten eines Werkstücks, wobei das Stanz-Präge-Bearbeitungssystem (4000) Folgendes umfasst:
    eine Stanz-Präge-Bearbeitungsmaschine (100) nach einem der vorstehenden Ansprüche; und
    eine automatische Zerspanungsvorrichtung (470) zur automatischen Herstellung des weiteren Kompensationselements (350) auf der Grundlage der bereitgestellten geometrischen Daten für das weitere Kompensationselement (350);
    wobei die automatische Zerspanungsvorrichtung (470) an der Stanz-Präge-Bearbeitungsmaschine (100) angebracht ist.
  10. Stanz-Präge-Bearbeitungssystem nach dem vorstehenden Anspruch, wobei die automatische Zerspanungsvorrichtung (470) so konfiguriert ist, dass sie das weitere Kompensationselement (350) mittels eines additiven Fertigungsverfahrens herstellt.
  11. Stanz-Präge-Bearbeitungssystem nach dem vorstehenden Anspruch, wobei die automatische Zerspanungsvorrichtung (470) einen 3D-Drucker umfasst.
  12. Stanz-Präge-Bearbeitungsmaschine nach einem der vorstehenden Ansprüche 9 bis 11, weiter umfassend
    ein Fördersystem (480) zum Überführen eines hergestellten weiteren Kompensationselements (350) von der automatischen Zerspanungsvorrichtung (470) zu der Stanz-Präge-Bearbeitungsmaschine (100).
  13. Stanz-Präge-Bearbeitungssystem nach dem vorstehenden Anspruch, wobei
    das Fördersystem (480) so konfiguriert ist, dass es das Stanz-Präge-Bearbeitungswerkzeug (130) zwischen der Stanz-Präge-Bearbeitungsmaschine (100) und der automatischen Zerspanungsvorrichtung (470) überführt.
  14. Verfahren zum Bearbeiten von Werkstücken (190), insbesondere durch Flachbettstanzen, Lochstanzen und/oder Prägen eines Kartons oder eines anderen blattförmigen Materials, das für Verpackungen für Gegenstände verwendet wird, wobei das Verfahren Folgendes umfasst:
    Bearbeiten eines ersten Werkstücks (190) mittels der Stanz-Präge-Bearbeitungsmaschine (100) nach einem der vorstehenden Ansprüche 1 bis 8;
    Überführen der bereitgestellten geometrischen Daten für das weitere Kompensationselement (350) an eine automatische Zerspanungsvorrichtung (470), insbesondere eine automatische Zerspanungsvorrichtung nach einem der vorstehenden Ansprüche 9 bis 13;
    Herstellen des weiteren Kompensationselements (350) auf der Grundlage der bereitgestellten geometrischen Daten;
    Entfernen des Kompensationselements (150), welches zur Bearbeitung des ersten Werkstücks (190) verwendet wurde, aus einem Bearbeitungsbereich der Stanz-Präge-Bearbeitungsmaschine (100);
    Überführen des hergestellten weiteren Kompensationselements (350) in den Bearbeitungsbereich; und
    Bearbeiten eines zweiten Werkstücks mittels der Stanz-Präge-Bearbeitungsmaschine (100) unter Verwendung des weiteren Kompensationselements (350).
  15. Verfahren nach dem vorstehenden Anspruch, wobei die Herstellung des weiteren Kompensationselements ein additives Fertigungsverfahren umfasst.
EP15020182.0A 2015-10-09 2015-10-09 Bearbeitung von werkstücken mittels matrizen, die mit einem ausgleichselement ebenenkompensiert sind Active EP3153286B1 (de)

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ES15020182T ES2818077T3 (es) 2015-10-09 2015-10-09 Procesamiento de piezas de trabajo con troqueles cuyo nivel se compensa con un elemento de compensación

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CN108909142B (zh) * 2018-06-04 2024-03-26 广东佛斯伯智能设备有限公司 一种双面机的压力压板结构
CN109764990B (zh) * 2018-11-28 2020-11-13 东台世恒机械科技有限公司 一种用模切机压力测试装置检测模切压力的方法
CN109795022A (zh) * 2019-03-20 2019-05-24 江苏正工机械制造有限公司 Pc预制构件的固定模台及其生产线
CN111496925A (zh) * 2020-04-27 2020-08-07 惠州市焕鑫洪电子有限公司 一种能够自动定位的异步模切机

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DE3044083C2 (de) * 1980-11-24 1990-05-10 Bobst S.A., Lausanne Stanzeinrichtungen für Stanzautomaten zum Stanzen von Bögen aus Papier, Pappe u. dgl.
DE102009056169A1 (de) 2009-11-27 2011-06-01 Heidelberger Druckmaschinen Ag Verfahren zum Zurichten von Werkzeugen
DE102012017636A1 (de) 2012-09-06 2013-11-07 Heidelberger Druckmaschinen Ag Verfahren zum Bestimmen des Zurichtbedarfs und Verfahren zum Erstellen eines Zurichtbogens

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