WO2024068231A1 - Procédé et dispositif d'usinage pour produire un outil de pressage - Google Patents

Procédé et dispositif d'usinage pour produire un outil de pressage Download PDF

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Publication number
WO2024068231A1
WO2024068231A1 PCT/EP2023/074655 EP2023074655W WO2024068231A1 WO 2024068231 A1 WO2024068231 A1 WO 2024068231A1 EP 2023074655 W EP2023074655 W EP 2023074655W WO 2024068231 A1 WO2024068231 A1 WO 2024068231A1
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WO
WIPO (PCT)
Prior art keywords
pressing tool
pressing
processing element
grinding
processing
Prior art date
Application number
PCT/EP2023/074655
Other languages
German (de)
English (en)
Inventor
Berthold Thölen
Original Assignee
Hueck Rheinische Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hueck Rheinische Gmbh filed Critical Hueck Rheinische Gmbh
Publication of WO2024068231A1 publication Critical patent/WO2024068231A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B27/00—Other grinding machines or devices
    • B24B27/0076—Other grinding machines or devices grinding machines comprising two or more grinding tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B49/00—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation
    • B24B49/16—Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B51/00—Arrangements for automatic control of a series of individual steps in grinding a workpiece
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/005—Portal grinding machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/07—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a stationary work-table
    • B24B7/075—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor involving a stationary work-table using a reciprocating grinding head mounted on a movable carriage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/10—Single-purpose machines or devices
    • B24B7/19—Single-purpose machines or devices for grinding plane decorative patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams
    • B30B15/062—Press plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44B—MACHINES, APPARATUS OR TOOLS FOR ARTISTIC WORK, e.g. FOR SCULPTURING, GUILLOCHING, CARVING, BRANDING, INLAYING
    • B44B5/00—Machines or apparatus for embossing decorations or marks, e.g. embossing coins
    • B44B5/02—Dies; Accessories
    • B44B5/026—Dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/10—Formation of a green body
    • B22F10/18—Formation of a green body by mixing binder with metal in filament form, e.g. fused filament fabrication [FFF]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/10—Sintering only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C1/00—Processes, not specifically provided for elsewhere, for producing decorative surface effects
    • B44C1/24—Pressing or stamping ornamental designs on surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers

Definitions

  • the present invention relates to a processing device and a method for producing a pressing tool as well as a pressing tool which has a support structure made of sheet steel, is formed from a pressing plate or endless belt and is designed for pressing material panels in heating presses, the surface of the pressing tool being structured.
  • Material panels for example wood-based panels, are required for the furniture industry and for interior design, for example for laminate floors.
  • the material panels have a core made of MDF (medium density fiberboard) or HDF (high density fiberboard), onto which core various material layers are placed at least on one side, for example an (optical) decorative layer and a protective layer (overlay layer).
  • MDF medium density fiberboard
  • HDF high density fiberboard
  • such material panels are usually provided with the same number of material layers on both sides; in order to connect the individual layers of the material panels (core, material layers, etc.) to one another, they are pressed together in a press using special pressing tools, in particular press plates or endless belts.
  • the surface of the material panels is also embossed in the process.
  • Hot presses or heating presses are usually used to connect the various material layers made of thermosetting resins, for example melamine resin, to the surface of the core under the influence of heat by fusing the plastic materials.
  • the decorative layers determine the pattern and color design of the material panels; However, a desired surface structure can be achieved by using suitable pressing tools. For example, a wood or tile decoration can be printed on the decorative layer (decorative paper), or decorative layers with patterns and color designs that are artistically designed according to the respective intended use are used. Here Overlay layers can also be used, which are printed on the top or bottom.
  • the pressing tools are provided with a surface structure that is designed to be congruent with the decorative layer and forms a negative image of the desired surface structure. That is why the pressing tools have a 3D profile (depth structuring), which is modeled on the wood nerves of a wooden surface, for example, in order to give the decorative layer of the material board the appearance of such a wooden surface.
  • 3D profile depth structuring
  • the pressing plates or endless belts are used as upper and lower tools in short-cycle presses, which are covered with pressing plates, or in double-belt presses for endless belts, whereby the embossing and heating of the material plates takes place at the same time, so that the thermosetting resins of the decorative and/or overlay layers of the material plates are first melted, the surface structure corresponding to the surface structuring of the pressing tools is introduced into the external material layers, and the structured material layers are bonded to the core of the material plate by subsequent hardening.
  • digitized image data of a decorative template can be used to apply an etching resist for structuring the pressed sheets or endless belts.
  • an etching resist is applied to the pressed sheets or endless belts, for example using a digital printer, in order to then carry out an etching process.
  • the pressing tool can be further treated, preferably in the case of surface structures with particularly deep/high structures Etching processes can be carried out one after the other.
  • an etching resist is applied to the already etched pressed sheet or endless strip and etching is carried out again until the desired deep structure has been produced.
  • a rough or fine structuring of the surface structuring can also be carried out, depending on which surface structure is to be given to the material plate.
  • material-applying processes can also be used to produce the surface structure (layer by layer) on the surface of the pressing tools. Most of these processes use masks (masking) to protect the surface of the pressing tool from subsequent material application or removal. By repeatedly applying appropriate masks and then applying or removing material, surface structures of various designs can be produced.
  • the final result is a surface structure on the pressing tool that represents the negative of the surface structure to be embossed into the material plate. Elevations in the surface structure correspond to the depressions to be embossed in the surface structure of the material plate, or depressions in the surface structure correspond to the elevations that the surface structure of the material plate should have.
  • pressing tools are used that also have different degrees of gloss.
  • a certain degree of gloss in a selected surface area of the pressing tool, it is possible to create any reflections or shades in the material plate that, for example, reinforce the impression of a natural wood, tile or natural stone surface for an observer.
  • thin chrome layers with different degrees of gloss are used for this purpose, whereby First, the entire surface of the pressing tool is chrome-plated and then a further chrome layer is applied, which covers either only raised or only deeper areas of the surface structure (EP 3 010 704 B1).
  • a higher level of detail or quality in one area of surface structuring is therefore usually accompanied by a loss of detail or quality in another area of surface structuring.
  • the object of the present invention was to overcome the disadvantages of the prior art and to provide a method for producing a pressing tool, by means of which a pressing tool for producing a workpiece, in particular a material plate, can be produced, the surface structuring of which has different structures, for example coarse and fine structures , with any level of detail and quality.
  • a machining device for machining a surface of a pressing tool which allows a simple and cost-effective production of such pressing tools.
  • the method according to the invention for producing a pressing tool comprises the following process step:
  • a surface of the steel sheet with a processing device which has at least one surface processing element with variable contact pressure on the pressing tool to be produced or on the surface of the steel sheet to be produced in order to produce a wave-shaped basic structure on the steel sheet.
  • polishing can also be understood in connection with the method according to the invention, since the differentiation of the processing methods can be seen in the use of different abrasives or grinding or polishing additives, with the same processing device still being used for grinding and polishing Can be found.
  • grinding or polishing agents can also include polishing paste, polishing aids or coolants.
  • the surface processing element is an elastic or an elastically deformable surface processing element.
  • the advantage of this method is that particularly natural surface structures can be applied to the pressing tool to be produced by using the surface processing element with variable contact pressure.
  • a surface structure that is complementary in shape to an imitation old wood can be produced in a simple manner, which has a wave-shaped basic structure that is modeled on the years of erosion of an old wood floor.
  • the wave-shaped basic structure can thus be provided as a basis for a further refined surface structure of the pressing tool.
  • the method for producing the same is, on the one hand, simple compared to known methods and, on the other hand, the method according to the invention can also be used to produce a wide variety of shapes of the wave-shaped basic structure, which multiplies the product range of workpieces that can be produced in a simple manner.
  • the surface processing element has a variable shape and/or a variable compressibility.
  • the surface processing element can be designed as an elastically deformable surface processing element. This ensures that, depending on the respective processing position of the surface processing element, different degrees of material removal from the steel sheet can be achieved.
  • a wave-shaped basic structure can be easily incorporated into the surface of the pressing tool to be produced, which is modeled in particular on the removal of an old wood floor or an old wood surface.
  • transitions between the wave-shaped elevations and depressions can be created in a particularly natural manner, so that an imitation old wood can be modeled particularly close to nature using the pressing tool produced thereby.
  • the contact pressure is controlled depending on a computer program instruction for controlling and for the processing position of the surface processing element on the pressing tool by means of a control or regulating device.
  • a control or regulating device for controlling and for the processing position of the surface processing element on the pressing tool by means of a control or regulating device.
  • This allows a desired wavy basic shape to be applied to the surface to be produced.
  • a plurality of pressing tools with essentially the same wavy basic structure can be used getting produced.
  • a variation of the wavy basic structure can also be carried out in a simple manner by appropriately modifying the computer program instructions in order to apply a wide variety of basic structures to the surfaces of pressing tools to be produced.
  • the computer program instruction uses a grayscale image file to control or regulate the contact force and/or the variable shape of the surface processing element.
  • a particularly simple transfer of example digitized structures of a real old wood floor or any other surface to the surface of the pressing tool to be produced is possible.
  • image files can also be edited in such a way that they are transferred to a grayscale file in order to then transfer the corresponding wavy basic structure to the surface of the pressing tool to be produced using the processing device.
  • Another advantageous embodiment is one in which the contact pressure can be controlled in a range from 0 to 100% of the contact pressure available from the processing device. This enables effective processing of the surface of the pressing tool to be produced. The entire effective range of the processing device is utilized, which subsequently also reduces the throughput time when producing a wave-shaped basic structure as much as possible.
  • the surface processing element it is possible for the surface processing element to be rotatable about a central axis with a variable contact pressure, the pressing tool being processed by means of the surface processing element by oscillating grinding or rotary movements and/or by feeding in at least one spatial direction parallel to the surface of the pressing tool.
  • the advantage here is that a corresponding amount of material removed from the surface of the pressing tool or from the steel sheet is increased.
  • Surface processing element is guided along the steel sheet with different feed speeds and with different grinding or rotational movements for each work area or processing area of the surface to be produced. This creates the possibility that, for example, surface areas of the steel sheet with different hardness properties experience different material removal by the processing device, whereby in particular a particularly natural surface can be applied or introduced onto a workpiece using a pressing tool produced in this way.
  • the center axis of the surface processing element can be variably adjusted at an angle to the surface of the pressing tool depending on a computer program instruction for control and the processing position of the surface processing element on the pressing tool.
  • This measure in combination with the variable shape of the surface processing element significantly increases the variety of wavy basic structures that can be produced. Since the surface processing element has a variable shape, this can be influenced by appropriately slanting the center axis and independently of this by varying the rotation or grinding speed. In this way, a wide variety of structural variations of the wavy basic structure can be realized. For example, with appropriate slanting of the center axis, a designated area of the surface of the pressing tool to be produced can be ground particularly deeply in order to further improve the similarity of a workpiece that can be produced with the pressing tool to a natural surface.
  • the changeable shape of the surface treatment element can be adjusted depending on a computer program instruction for controlling and the processing position of the surface treatment element on the pressing tool.
  • the surface treatment element is designed like a cushion or bellows and that the changeable shape can be achieved by introducing a gas or a liquid with the appropriate pressure into the surface treatment element. shape is changed.
  • the surface treatment element can be changed by varying the grinding or
  • Rotation speed is varied. It is also conceivable that the surface treatment element is made up of several parts, with the individual parts being designed to be movable relative to one another via centrifugal force, so that the shape of the surface treatment element can be changed. In any case, this increases the processing variety or increases the processing options for a wavy basic structure to be produced.
  • the surface of the pressing tool is processed simultaneously by at least several, but preferably by nine or twelve surface processing elements, each with a variable contact pressure and offset relative to one another or arranged in a row.
  • the individual surface processing elements on the processing device can be moved relative to one another even during the processing of a surface to be produced.
  • the method in particular before grinding, further includes:
  • the method further includes:
  • the method further comprises the following method step:
  • the method further includes:
  • the method further comprises processing the surface of the pressing tool by one or more of pressing, embossing, etching, polishing, laser processing, sandblasting or chemical treatment, grinding, milling and applying at least one coating or a combination thereof. This creates the possibility of fine structures being introduced into the surface of the pressing tool to be produced in a variety of ways.
  • the surface of the pressing tool produced has at least two different degrees of gloss. It is therefore possible, for example, that particularly attractive surfaces of a workpiece can be produced using the pressing tool produced if the surface of the pressing tool is provided with different degrees of gloss. This makes it possible to create an imitation that is particularly close to nature when viewing the workpiece.
  • the method further comprises applying at least one chromium layer or a nickel-plated or nickel-containing coating to the surface of the pressing tool or parts thereof.
  • a desired level of gloss or a desired matting of the surface structure of the pressing tool can be achieved in a simple manner.
  • the chrome layer can be used to achieve a protective effect on the surface structure of the pressing tool against the stress on it when producing a large number of material panels.
  • the invention further comprises a pressing tool which was produced by a method according to the invention.
  • the invention also includes a method for producing a material plate with a structured surface by pressing, wherein a pressing tool according to the invention is used to press the material plate.
  • a pressing tool according to the invention is used to press the material plate.
  • optically particularly attractive material plates can be produced.
  • the use of a pressing tool according to the invention is advantageous when optically apparently natural imitations of material plate surfaces are produced.
  • a pressing tool according to the invention can also be used in a special way to apply a patina to the material plates that is optically deceptively similar to natural materials. For example, imitations of old wood or weathered stone surfaces can be easily produced as material plates.
  • the invention further comprises a processing device for producing a surface of a pressing tool, wherein the pressing tool has a support structure made of sheet steel, is formed from a pressing plate or endless belt and is designed for pressing material panels in heating presses.
  • the processing device comprises at least one grinding unit and a control and regulating device for controlling or regulating the processing device.
  • the grinding unit comprises a surface processing element and a pressing means, wherein by means of the pressing means a contact pressure of the surface processing element on the surface of the pressing tool to be produced can be adjusted based on a specification of the control or regulating device, in particular can be controlled or regulated during the production of the surface.
  • the pressing means is designed as a hydraulic or pneumatic cylinder.
  • the contact pressure is applied by a servo motor using the contact pressure means.
  • the pressing means is designed as a pressure generator, whereby a pressure can be built up in the surface processing element by means of the pressing means, whereby the pressing force on a surface to be produced can be changed. It can be provided that this Surface processing element is designed as a cushion, balloon or bellows, the pressure inside the surface processing element being built up with the aid of a gas or a liquid.
  • a wave-shaped basic structure can be easily incorporated onto a surface of a steel sheet to be produced.
  • This wave-shaped basic structure can be designed as a coarse structure, with a fine structure being applied to the steel sheet or incorporated into the steel sheet in further processing steps to form a desired surface structure of the pressing tool.
  • the surface processing element has a variable shape.
  • the shape of the surface processing element can be changed in different ways, as already described. This ensures that, depending on the respective processing position of the surface processing element, different degrees of material removal from the steel sheet can be achieved.
  • a wave-shaped basic structure can be easily incorporated into the surface of the pressing tool to be produced, which is modeled in particular on the removal of an old wood floor or an old wood surface.
  • transitions between the wave-shaped elevations and depressions can be created in a particularly natural manner, so that an imitation old wood can be modeled particularly close to nature using the pressing tool produced thereby.
  • the surface processing element is designed like a cushion, balloon-like or bellows, the variable shape of the surface processing element being changeable hydraulically or pneumatically. This allows the variety of design options for the wavy basic structure to be increased in a simple manner.
  • the contact pressure of the contact pressure means is controllable or regulated hydraulically or pneumatically.
  • pressure can be built up in the surface processing element, but also, on the other hand, that, for example, the surface processing element, with the appropriate design of the pressing means as a hydraulic or pneumatic cylinder, can be brought closer to the surface to be produced in order to increase the contact pressure on the surface to be produced increase surface area.
  • control or regulating device is set up to control the contact pressure of the surface processing element by means of a computer program instruction depending on the respective processing position of the surface processing element on or relative to the pressing tool.
  • This allows a desired wavy basic shape to be applied to the surface to be produced.
  • a plurality of pressing tools with essentially the same wavy basic structure can be produced in this way.
  • the wavy basic structure can also be varied in a simple manner by appropriately modifying the computer program instruction in order to apply a wide variety of basic structures to the surfaces of pressing tools to be produced.
  • the surface processing element is rotatably mounted about a central axis with a variable contact pressure, the pressing tool being able to be processed by means of the surface processing element by oscillating grinding or rotary movements and/or by feeding in at least one spatial direction parallel to the surface of the pressing tool.
  • the advantage here is that a corresponding material removal from the surface of the pressing tool or from the steel sheet is increased or can be changed in certain areas.
  • the surface processing element is guided along the steel sheet at different feed speeds and with different grinding or rotational movements for each work area or processing area of the surface to be produced. This creates the possibility that, for example, surface areas of the steel sheet with different hardness properties experience different material removal by the processing device, which in particular results in a particularly Natural surface can be applied or introduced onto a workpiece using a pressing tool manufactured in this way.
  • a central axis of the surface processing element can be variably adjusted by means of an adjusting element at an angle to the surface of the pressing tool depending on a computer program instruction for control and the processing position of the grinding unit on the pressing tool.
  • This measure in combination with the variable shape of the surface processing element significantly increases the variety of wavy basic structures that can be produced. Since the surface processing element has a variable shape, this can be influenced by a corresponding inclination of the central axis and independently of this also by varying the rotation or grinding speed. In this way, a wide variety of structural variations of the wavy basic structure can be realized.
  • a designated area of the surface of the pressing tool to be produced can be ground particularly deeply in order to further improve the similarity of a workpiece that can be produced with the pressing tool to a natural surface.
  • the processing device comprises at least several, but preferably nine or twelve grinding units, wherein the several grinding units are offset relative to one another or arranged in a row.
  • the processing device can comprise at least several, but preferably nine or twelve grinding units, wherein the several grinding units are offset relative to one another or arranged in a row.
  • Fig. 1 a pressing tool
  • Fig. 2 shows a processing device for producing a pressing tool
  • Fig. 3 shows a grinding unit of the processing device
  • Fig. 1 to Fig. 3 possible embodiments of a pressing tool 1 as well as a processing device 4 and a grinding unit 6 are shown, wherein the same reference symbols or component designations are used for the same parts.
  • the pressing tool 1 can have a support structure made of sheet steel 2 or can be formed from a pressing sheet or an endless strip of sheet metal.
  • the pressing tool 1 also has a surface 3, which surface 3 can have a surface structure 7 in the finished state of the pressing tool 1.
  • a processing device 4 can be used to process the surface 3 of the pressing tool 1.
  • the processing device 4 can comprise at least one grinding unit 6, which grinding unit 6 can comprise a surface processing element 5.
  • the surface processing element 5 can have a variable shape. It is conceivable, for example, that the surface processing element 5 is designed like a bellows, cushion or balloon. The shape of the surface processing element 5 can thus be changed in many different ways. For example, it is conceivable that by introducing gas or liquid into the surface treatment element 5 is changed in shape. Alternatively, however, it is also conceivable that the surface treatment element 5 is designed with appropriately selected material properties such that the shape of the surface treatment element 5 can be changed by rotating the surface treatment element 5 about a central axis 8 of the grinding unit 6.
  • the surface treatment element 5 comprises individual parts, which individual parts change their shape when the surface treatment element 5 rotates due to centrifugal force, whereby the sections of the surface treatment element 5 acting on a surface 3 of the pressing tool 1 to be produced can subsequently be changed.
  • the grinding unit 6 can be positioned on a machine frame of the processing device 4, the at least one grinding unit 6 being displaceable relative to the surface 3 of the pressing tool 1 to be produced, so that at least a portion of the surface 3 to be produced can be processed by means of the grinding unit 6.
  • the processing device 4 can comprise a control or regulating device 10.
  • the grinding unit 6 can include a pressing means 9, by means of which a pressing force on the surface 3 of the pressing tool 1 to be produced can be changed. It can be provided that the contact pressure is changed by means of the pressing means 9 by bringing the surface processing element 5 closer to the surface 3 to be produced. Independently of this and possibly alternatively, it can be provided that the variable shape of the surface processing element 5 is changed by means of the pressing means 9 in such a way that a gas or a liquid is introduced into the surface processing element 5 with a pressure appropriate for the respective pressing force to be set.
  • the grinding unit 6 can comprise an adjusting element 11, by means of which the surface treatment element 5 or the central axis 8 can be adjusted at an angle 12 or can be inclined at an angle to the surface 3 of the pressing tool 1 to be produced.
  • a computer program instruction can be stored in the control or regulating device 10 for controlling or regulating the surface processing element 5 or the action of the surface processing element 5 on the surface 3 to be produced.
  • the computer program instruction can accordingly include commands for controlling or regulating the resulting contact pressure and the changing shape of the surface processing element 5, the commands being translated into corresponding control parameters for the processing device 4 based on a grayscale image file.
  • the processing device 4 includes several grinding units 6.
  • nine or twelve grinding units 6 are included, whereby the several grinding units 6 can be offset from one another or arranged in a row.
  • the grinding units 6 can be positioned on the machine frame of the processing device 4 so that they can be adjusted relative to one another.
  • a surface 3 or a first surface structure 7 can be created, by means of which workpieces with characteristic hollows and wear that are modeled on an old wood structure can subsequently be produced.
  • this is possible in a simple manner by applying the method according to the invention using the machining device 4.
  • an abrasive can be used in the method step of machining using the machining device 4, whereby a desired surface structure 7 or a material removal required for it can be achieved by the grain of the abrasive used as intended for a desired surface structure 7.
  • the abrasive used as well as the previously described control variables, such as the change in shape, the positioning of the surface machining element 5 and the contact pressure in each Processing area of the surface 3, corresponding influence on the press tool 1 to be produced or which surface quality the finished press tool 1 has.
  • polishing processing of the surface 3 to be produced is also possible with the same processing device 4, as this depends on the grain size of the abrasive and a corresponding design or control of the surface processing element 5.
  • the method for producing a pressing tool can include grinding or polishing the surface 3 to be produced.
  • a masking is applied to the surface 3 to be produced before grinding, in order to subsequently subject the pressing tool 1 to be produced to selective surface removal by etching, aligned horizontally and horizontally in an etching bath.
  • the masking can be removed in order to then treat the now pre-machined surface 3 using the processing device, so that the steel sheet 2 has a wave-shaped basic structure 13.
  • a material application can be applied to the surface 3 to be produced in order to introduce corresponding further coarse structures into the surface structure 7 of the pressing tool 1.
  • All information on value ranges in this description should be understood to include any and all sub-ranges, e.g. the information 1 to 10 should be understood to include all sub-ranges, starting from the lower limit 1 and the upper limit 10 , i.e. all subranges start with a lower limit of 1 or greater and end with an upper limit of 10 or less, e.g. 1 to 1.7, or 3.2 to 8.1, or 5.5 to 10.

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Abstract

L'invention concerne un procédé de fabrication d'un outil de pressage (1) à partir d'une tôle d'acier (2), l'outil de pressage (1) étant conçu pour presser des panneaux de matériau par pressage à chaud, et le procédé comprenant l'utilisation d'un dispositif d'usinage (4), dont au moins un élément de traitement de surface (5) exerce une force de pression variable sur l'outil de pressage (1) à produire, pour meuler une surface (3) de la tôle d'acier (2) afin de produire une structure de base ondulée (13) sur la tôle d'acier (2). L'invention concerne en outre un dispositif d'usinage (4) pour usiner la surface (3) de l'outil de pressage (1), lequel dispositif d'usinage (4) comprend au moins un appareil de meulage (6) et un dispositif de commande à boucle ouverte et fermée pour commander le dispositif d'usinage (4), l'appareil de meulage (6) comprenant un élément de traitement de surface (5) et un moyen d'application de pression (9), dans lequel, en utilisant le moyen d'application de pression (9), une force de pressage avec laquelle l'élément de traitement de surface (5) est pressé sur la surface (3) à produire de l'outil de pressage (1) est réglable, en particulier peut être commandée pendant la production de la surface (3), sur la base d'une spécification provenant du dispositif de commande à boucle ouverte et fermée (10).
PCT/EP2023/074655 2022-09-30 2023-09-07 Procédé et dispositif d'usinage pour produire un outil de pressage WO2024068231A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022125372.4 2022-09-30
DE102022125372.4A DE102022125372A1 (de) 2022-09-30 2022-09-30 Verfahren und Bearbeitungsvorrichtung zur Herstellung eines Presswerkzeuges

Publications (1)

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WO2024068231A1 true WO2024068231A1 (fr) 2024-04-04

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PCT/EP2023/074655 WO2024068231A1 (fr) 2022-09-30 2023-09-07 Procédé et dispositif d'usinage pour produire un outil de pressage

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DE (1) DE102022125372A1 (fr)
WO (1) WO2024068231A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116594A (en) * 1975-12-12 1978-09-26 Magna-Graphics Corporation Embossing apparatus having magnetic roller and flexible embossing plates therefor
EP1384553A2 (fr) * 1998-12-01 2004-01-28 University College London Machine à polir avec moyens d'entraínement pour guider un outil de meulage le long d'un chemin de précession et son procédé d'utilisation
US20100233942A1 (en) * 2009-03-12 2010-09-16 A. Zahner Company Apparatus for applying a finish to a metal surface and method of apparatus construction
US20160193868A1 (en) * 2013-08-21 2016-07-07 Hueck Rheinische Gmbh Method for producing a hydrophobic or superhydrophobic surface topography
EP3010704B1 (fr) 2013-06-19 2020-07-22 HUECK Rheinische GmbH Procédé et dispositif permettant de produire une structure de surface tridimensionnelle d'un outil de compression

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL144688A0 (en) 2000-09-01 2002-06-30 Premark Rwp Holdings Inc Polishing of press plates coated with titanium diboride
DE102006017664A1 (de) 2006-04-12 2007-10-18 Volkswagen Ag Verfahren und Vorrichtung zum Herstellen einer Form für Ur- und Umformwerkzeuge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4116594A (en) * 1975-12-12 1978-09-26 Magna-Graphics Corporation Embossing apparatus having magnetic roller and flexible embossing plates therefor
EP1384553A2 (fr) * 1998-12-01 2004-01-28 University College London Machine à polir avec moyens d'entraínement pour guider un outil de meulage le long d'un chemin de précession et son procédé d'utilisation
US20100233942A1 (en) * 2009-03-12 2010-09-16 A. Zahner Company Apparatus for applying a finish to a metal surface and method of apparatus construction
EP3010704B1 (fr) 2013-06-19 2020-07-22 HUECK Rheinische GmbH Procédé et dispositif permettant de produire une structure de surface tridimensionnelle d'un outil de compression
US20160193868A1 (en) * 2013-08-21 2016-07-07 Hueck Rheinische Gmbh Method for producing a hydrophobic or superhydrophobic surface topography

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