WO2020239275A1 - Dispositif et procédé de confection de panneaux de matériau - Google Patents

Dispositif et procédé de confection de panneaux de matériau Download PDF

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Publication number
WO2020239275A1
WO2020239275A1 PCT/EP2020/054654 EP2020054654W WO2020239275A1 WO 2020239275 A1 WO2020239275 A1 WO 2020239275A1 EP 2020054654 W EP2020054654 W EP 2020054654W WO 2020239275 A1 WO2020239275 A1 WO 2020239275A1
Authority
WO
WIPO (PCT)
Prior art keywords
drive
base
separating
spatial directions
guide device
Prior art date
Application number
PCT/EP2020/054654
Other languages
German (de)
English (en)
Inventor
Ulrich Maier
Michael Vaeßen
Original Assignee
Siempelkamp Maschinen- Und Anlagenbau 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 Siempelkamp Maschinen- Und Anlagenbau Gmbh filed Critical Siempelkamp Maschinen- Und Anlagenbau Gmbh
Publication of WO2020239275A1 publication Critical patent/WO2020239275A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D45/00—Sawing machines or sawing devices with circular saw blades or with friction saw discs
    • B23D45/18—Machines with circular saw blades for sawing stock while the latter is travelling otherwise than in the direction of the cut
    • B23D45/20—Flying sawing machines, the saw carrier of which is reciprocated in a guide and moves with the travelling stock during sawing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D47/00—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts
    • B23D47/08—Sawing machines or sawing devices working with circular saw blades, characterised only by constructional features of particular parts of devices for bringing the circular saw blade to the workpiece or removing same therefrom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/02—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor characterised by a special purpose only
    • B27B5/06—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor characterised by a special purpose only for dividing plates in parts of determined size, e.g. panels
    • B27B5/063—Sawing travelling workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/02—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor characterised by a special purpose only
    • B27B5/06—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor characterised by a special purpose only for dividing plates in parts of determined size, e.g. panels
    • B27B5/065—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor characterised by a special purpose only for dividing plates in parts of determined size, e.g. panels with feedable saw blades, e.g. arranged on a carriage

Definitions

  • the invention relates to an apparatus for assembling
  • the device comprising at least one separating device having a cutting tool and a base and a guide device, at least the base of the separating device being movable along the guide device is arranged, wherein the device has a first drive for moving the cutting tool with respect to the base and a second drive for moving the base with respect to the guide device.
  • the invention also relates to the use of a device for
  • Assembly of material panels in particular for dividing a web of material extending along three spatial directions and having finite dimensions in at least two spatial directions, within a material panel production plant, preferably for Flolz material panels.
  • the invention further relates to a method for assembling material panels, in particular for dividing a web product which extends along three spatial directions and has finite dimensions in at least two spatial directions, the web product being below
  • Separating device is divided, wherein at least the base of the separating device is moved along a guide device, wherein the separating tool is moved using a first drive relative to the base and the base is moved using a second drive relative to the guide device.
  • the positioning of material plates takes place either in a cycle-related manner or continuously.
  • the material plates are produced as flat objects with finite dimensions in all three spatial directions, while the material plates, which are produced in a continuous process, represent lengths of a web material with finite dimensions in only two spatial directions.
  • the operation of the joining and / or compression unit determines whether the overall process is described as a cycle-related or continuous process. Since considerable pressures are generally used in the compression units or the combined joining and compression units in the production of material panels, these units are usually referred to by those skilled in the art with reference to an overall system as a press part.
  • the working pressures here are mostly in ranges between about 80 N / cm 2 and 650 N / cm 2 and there advantageously between 230 N / cm 2 and 520 N / cm 2 .
  • the material panels are preferably made of composite materials and preferably of fiber, in particular wood, composite, plaster of paris, composite fabric and / or reinforced thermoplastic.
  • Wood composites include, for example, pressboard, OSB material (Oriented Strand Board material), MDF material (medium-density wood fiber material), HDF material (high-density wood fiber material), multiplex, plywood, lightweight panels, tenter plywood and others.
  • Gypsum composite is understood here to mean, in particular, the various types of plasterboard.
  • fabric composites is to be understood as meaning composites in which at least one composite component comprises a fabric. This is most often the case with so-called fabric-reinforced laminates. In the simplest embodiment, however, the term can also include a merely impregnated fabric.
  • Reinforced thermoplastics are generally used to mean all (fiber) reinforced thermoplastics.
  • a material plate can also consist of a mixed composite in the form of a laminate, provided that at least one layer of the laminate corresponds to one of the composite materials described.
  • New generations of ContiRoll ® presses should achieve increased production speeds. It is envisaged that the possible production speed should be increased by about 50% from approx. 2 meters / second web speed to approx. 3 meters / second web speed.
  • End production areas include, for example, longitudinal cutters such as trimming or edge cutting devices, cross cutters such as multi-diagonal cutters, cooling and storage devices, pre-stacking and stacking systems, labeling areas, packaging devices, and various transport units.
  • a special position among the devices of the finishing areas are taken by the cross-cutting devices, which are generally also called devices for making-up, and by separating material plates limited in three dimensions from one limited only in two dimensions and moving at one web speed moving web material to transfer the production process from a continuous working method to a discrete working method.
  • Cross-cutting devices known according to the prior art mostly comprise a cutting device which can generally be guided over a cross-member at an angle relative to the moving web material.
  • Such cross cutting devices are described, for example, in DE 32 17 941 A1, DE 100 02 802 A1 or DE 10 2004 015 891 A1. So that the cross-cutting device can produce right-angled material panels from the moving web material, its speed of movement must be synchronized with the web speed as a function of the angle. In order to obtain clean cuts or material panel edges, the cutting speed, which usually rotates about an axis that is linearly displaced along the cross-member, must be synchronized accordingly.
  • one object of the invention is to provide a device for assembling material panels, in particular for dividing a web material extending along three spatial directions and having finite dimensions in at least two spatial directions, which can also be operated at high working speeds, i.e. high clock frequencies of a discontinuously operable material plate production plant or high web speeds of a continuously operable material plate production plant, with little space requirement and advantageously also with low energy requirements.
  • the object of the invention is achieved with respect to a device of the type mentioned at the outset in that a third drive is provided which is provided for moving the same base relative to the guide device as the second drive.
  • the movement speed of the base which at the same time represents the feed speed of the cutting tool
  • the base must be accelerated from standstill to the speed of movement synchronized with the speed of the web material before the cutting tool comes into contact with the web material and after the Cutting tool and the web material are braked back to a standstill.
  • At least one further drive can be assigned to the base for this purpose.
  • at least one third drive is provided, which is provided for moving the same base with respect to the guide device, like the second drive or, in other words, at least two drives act on the same base in order to move the base along the guide device.
  • the invention thus creates the prerequisites for concepts that save installation space and purchase costs and / or that are energy-efficient.
  • the invention also avoids disadvantages that were previously inevitably accepted with an increase in performance.
  • the increase in performance for example in order to be able to achieve corresponding acceleration values, is always associated with an increase in an electric motor and an electric motor connected to a physical inertia.
  • Both the electrical as well as the physical inertia of a drive are particularly disadvantageous if the drive is operated at partial load during the phase in which the cutting tool is in effective contact with the web material to be cut and has to react to fluctuations resulting from irregularities the necessary cutting forces and irregularities in the speed of the web product.
  • the device has a control device by means of which at least the second drive and the third drive can be controlled and / or regulated.
  • control device is designed in such a way that the second drive and the third drive can be controlled one after the other or can be regulated alternately.
  • one of the drives can only accelerate the phase (i.e. the phase in which the base starts from standstill the speed of movement synchronized with the speed of the web material is accelerated or vice versa) and the other drive can be assigned solely to the separating phase (i.e. the phase in which the separating tool is in operative contact with the web material to be separated).
  • control device is designed in such a way that the second drive and the third drive can be controlled and / or regulated in an overlapping manner at least at times.
  • additional potentials and synergy effects can be used particularly well.
  • the control device can request power from both (or further) drives during the acceleration phase, while only one drive (or part of the existing drives) is in operation during the separation phase.
  • the device comprises a transport device which forms a transport path for transporting the web goods and / or the material panels or is in operative connection with such a transport device.
  • the respective drive can be tailored as precisely as possible to the tasks assigned to it.
  • the second drive is preferably designed as a rotary motor.
  • a rotary motor should be understood to mean an electric motor which comprises rotating drive elements.
  • a rotary motor can be designed as a direct current motor, synchronous motor, asynchronous motor, servo motor, three-phase motor or rotary field motor.
  • Such motors are available on the market in great variety and in the most varied of variants.
  • servomotors can be controlled and / or regulated very precisely.
  • rotary motors are usually relatively inexpensive to purchase even if they have relatively high rated outputs, for example in the one to two-digit kilowatt range.
  • the rotary motor is preferably designed for a controllable speed.
  • the control technology of the second drive can be coordinated much better with the third drive.
  • the third drive is preferably designed as a linear motor.
  • Linear motors have particularly good acceleration values and are well suited to accelerating small to medium-sized masses, for example up to a range of around 300kg, quickly, precisely and efficiently.
  • part of the linear motor can serve directly as a carrier for the second drive.
  • the third drive and the second drive differ in terms of their performance. Although this can increase the control or regulation effort, the drives can be adapted even better to the tasks assigned to them. However, it is conceivable that an allocation of the respective nominal powers also takes place taking into account a common operating phase. It can be the case that neither one nor the other drive alone has sufficient power to be able to deliver the power required in the acceleration phase.
  • the third drive is designed as a linear motor and the second drive is designed as a rotary motor, in particular a servo motor, and the linear motor has a lower nominal power than the rotary motor, in particular a servo motor.
  • the advantage of a particularly low inertia of the rotary motor, in particular the linear motor could not be fully exploited, but the total acquisition costs could be kept very low in this way.
  • the third drive is designed as a linear motor and the second drive is designed as a rotary motor, in particular a servo motor, and the linear motor has a higher rated power than the rotary motor, in particular a servo motor.
  • the rotary motor in particular a servomotor, which is still in operation in the separating phase is designed with a particularly low inertia, which in particular also benefits the cutting quality and the longevity of the separating tool, for example.
  • the third drive and / or the second drive advantageously has a nominal power in the range between 2.5 KW and 22.5 KW, in particular in the range between 4.0 kW and 12.5 KW, in particular between 4.5 KW and 9, 0 KW on.
  • the linear motor advantageously comprises a rail, a first mover and a second mover.
  • a second mover By providing a second mover, the proportion of usable operating time can be increased compared to the unused phases without the need for an additional separating device or even an additional device for assembling material panels.
  • At least two of the at least two movers can preferably be connected to one another, in particular releasably. If the two movers are spaced apart on the rail, acceleration forces can be applied to both movers individually. It is then preferred that the two movers are connected to one another (releasably) via a rigid connection, for example a bridge, and the application of the acceleration forces is synchronized, preferably by means of a control or regulating unit.
  • a bridge can preferably form the base of the separating device or form at least part of the base.
  • At least one mover is arranged in a stationary manner opposite the guide device.
  • it is not the rotor that should be moved by the strator here, but the strator by the rotor.
  • This is a bit more complex in terms of control technology, but can be done in the Connection with the conditions of a device for the assembly of material panels, among other things, bring structural advantages.
  • two or more movers are also arranged in such a way that the rail (the strator) passes through the respective magnetic field of action of the individual movers one after the other, the linear motor can also be designed in a low power range.
  • a mover is arranged on a first side of the transport path and a mover is arranged on a second side of the transport path.
  • a transport device forming a transport path for transporting a web material and / or material plates offers the possibility of guiding the material plate ("mother plate") or preferably the web material to be separated past the separating device of the device and the separation during the movement of the web material and / or the (emerging) material plate (s).
  • This allows a particularly efficient way of working.
  • the provision of a first mover on a first page of the The transport path and a second mover on a second side of the transport path and / or at least two movers on the same side of the transport path increases the flexibility of the device n to a high degree. It can therefore also be advantageous if two movers are arranged on the same side of the transport path.
  • the two movers can then act together on the rail, which means in particular that they either act in a coordinated manner to accelerate the rail or act on the rail in a braking manner. If at least two movers are provided, which are arranged on opposite sides of the transport path, they can alternately move the rail (the strator) over the transport path in a direction at an angle to the direction of the transport path, alternating with their counterparts. To do this, the movers can accelerate the rail (the strator) over a short distance, for example.
  • the rail (the strator) which preferably forms at least part of the base, can then cross in free flight at least part of the useful area, i.e. the area in which the separating device is in operative connection with the web material and / or material panel to be separated.
  • the guide device has a usable area and two secondary areas arranged adjacent to the usable area and if the rail is shorter than the usable area. In other cases, it can be of great benefit if the guide device has a useful area and two secondary areas arranged adjacent to the useful area and the rail completely spans the useful area.
  • Such a configuration offers a particularly rigid design compared to the drives known from the prior art, which have to work with rotary motors and belt drives.
  • a rigid design can reduce or avoid vibrations, particularly in the area of the cutting device, which benefits the quality of the cut. This also reduces wear on the cutting tool. This improves the economy of the device in operation.
  • At least one drive is preferably provided for changing between motor and generator operation. This makes it possible to recover at least a portion of the energy that would otherwise be dissipated into heat during braking, which greatly promotes the economic efficiency of the operation of the device.
  • the at least one mover on a first side of the Provides transport path and at least one mover on the second side of the transport path it can be advantageous if the movers alternate with their counterpart (s) on the opposite side between motor and generator operation.
  • the device has in particular a power storage device and preferably one with the power storage device and preferably the linear motor, in particular at least one Mover and / or the rail in operative connection control includes.
  • a particularly economical energy budget is possible.
  • the energy (recovered) obtained by the generator operation can of course also be made available indirectly or directly at another point of the device or in a system that is adjacent or superordinate to the device, i.e. after intermediate storage has taken place.
  • At least one drive has a cooling device and / or is in operative connection with a cooling device. Due to the design of the drive (s) as a linear motor and preferably due to at least some of the advantageous configurations described, particularly low drive powers can be achieved without endangering the safe operation of the device even when machining thicker material panels and, in some cases, additionally reducing waste heat, Nevertheless, it is of great advantage if the linear motor has a cooling device and / or is in operative connection with a cooling device, since the magnets in a linear drive generally have a poorer efficiency when the temperature rises and the web material and / or the material plate (s) , especially in the case of wood-based panels, still emit a high amount of waste heat in the temporal and / or spatial area after the press.
  • the guide device and / or a drive has an indicator for determining a relative position between the guide device and at least one part, in particular the rail, of at least one drive.
  • control and / or regulating device that controls the relative movement between the rail and at least one mover is additionally used to obtain knowledge - and in particular also to
  • control can be combined with the control of the
  • Material plate production plant are in operative connection or be identical to this.
  • sensors can be provided in the device which are suitable, for example, for determining the separating force required on the cutting tool. This can, for example, be a sensor for detecting actual values of a necessary drive torque or the flowing torque
  • Web speed or temperature can be measured.
  • the base and / or the cutting tool are preferably arranged so as to be movable at their distance from the transport path.
  • the cutting tool can be brought out of engagement with the web material moving below the cutting tool along the transport path, for example for an intended return movement into a basic position to be assumed before an upcoming cutting process. It can also be advantageous if a coupling is provided between the base and the second drive and / or the third drive.
  • the drive which is only provided for the acceleration phase, can be decoupled from the movement phase required for the actual separation operation, so that the inertia inherent in the decoupled drive does not have a negative impact during the movement phase required for separation operation.
  • the device has at least one further cutting device having a cutting tool and a base, at least one further guide device and at least one further second drive and further third drive each provided for moving the same base.
  • a separating device is also available in particular when the first separating device cannot be used, for example because of the return movement of the base carrying the separating tool.
  • the object of the invention is achieved in that the device is designed according to one of claims 1 to 18.
  • a method for assembling material panels in particular for dividing a web product extending along three spatial directions and having finite dimensions in at least two spatial directions, the web product being divided using a cutting device having a cutting tool and a base, at least the base of the Cutting device is moved along a guide device, wherein the cutting tool is moved using a first drive relative to the base and the base is moved using a second drive relative to the guide device, the object of the invention is achieved in that the same base using a third drive is moved relative to the guide device.
  • Figure 1 Representation of a material plate production plant with adjoining cross cutting device and device for transporting material plates according to the prior art in a perspective view.
  • Figure 2 Schematic representation of a device for
  • FIG. 1 shows, in a perspective view, a representation of a section of a material panel production system 23 with an adjoining device 1 for assembling material panels 10 as is known from the prior art.
  • the material plate production system 23 is arranged in a room in such a way that its longitudinal direction extends along an X-axis, its transverse direction (width) along a Y-axis and its height direction along a Z-axis.
  • the portion shown corresponds to at least a portion of a system for transport, and in particular for separating and dividing material plates 10 which exits as an endless web material 2 from a production unit 34, in particular a continuously operating press - having - as a Contiroll ® press of the applicant exits, wherein a device 1 for the assembly of material panels 10, in particular for dividing the web material 2 extending along three spatial directions X, Y, Z and having finite dimensions in at least two spatial directions Y, Z, can include, the device 1 at least one, a separating tool 3 and a base 4, separating device 5 and a guide device 6, wherein at least the base 4 of the separating device 5 is arranged movably along the guide device 6, the device 1 having a first drive for moving the separating
  • the device 1 can comprise a transport device 17, which forms a transport path 18, for transporting the web material 2 and / or the material panels 10, or can be in operative connection with such a transport device 17.
  • FIG. 2 now shows an embodiment of a device 1 according to the invention for assembling material panels 10 in a schematic form of representation.
  • the device has a control device 27 by means of which at least the second drive 8 and the third drive 9 can be controlled and / or regulated and which in the illustrated case is also suitable for wireless data transmission.
  • the control device 27 can, however, alternatively or in addition also be suitable for wired data transmission.
  • the cutting tool 3 is in engagement with the web material 2 within normal operation of the device 1, which is transported by the transport device 17 along a transport path 18 essentially in the X direction - that is, out of the image plane.
  • a material plate 10 is formed from the left edge of the image, i.e. from the direction of the first side 24.
  • the cutting tool is driven by a first drive 7 and in the present case rotates about an axis that is part of the base 4.
  • the base 4 is in turn driven by a second drive 8, which moves a revolving belt 35 which is designed to be detachably connectable to the base and thus indirectly to a third drive 9 via a coupling 22.
  • the third drive 9 and the second drive 8 differ in their design. While the second drive 8 is designed as a rotary motor 19, the third drive is designed as a linear motor 20. Although both the second drive 8 and the third drive 9 are within a nominal power range between 4.0 KW and 12.5 KW, they differ from one another in their nominal power.
  • the third drive 9, designed as a linear motor 20, comprises a rail 11 and two movers 12 and 13, which are arranged in a stationary manner opposite the guide rail 6 on a frame, while the rail 11 is connected to the base 4.
  • the rail 11 is made shorter (in the Y direction) than the useful area 14 is wide (also in the Y direction).
  • the resulting overlapping effective length on each side 24 or 25 of the web material 2 to be separated is sufficient, however, for the third drive 9 to second drive 8 accelerated sufficiently to bring the base 4 to a speed that is necessary for a straight and flawless severing cut of the web 2 when the base 4 is moved at an angle to the transport direction of the web 2 over its material to be separated.
  • the base is accelerated jointly over a relatively short distance by the two drives 8 and 9 and then only moved by the drive 8 in the useful area. This is done in a way that saves space and energy. Since the rail 11 is automatically disengaged when the effective area of the respective mover 12 or 13 is left, one can also speak of a type of coupling at the end point of the respective mover facing the web material. Alternatively, however, in a form not shown, the rail can also be designed so long (in the Y direction) that it at least completely covers the useful area (in the Y direction).
  • the movers 12 and 13 are each in operative connection with a cooling device 21.
  • this can also be the same cooling device 21, which has only two effective areas.
  • linear motor 20 acts when the base 4 is accelerated in motor mode, it acts during the one required after the separation process Delay of the base 4 in generator mode and is thus suitable for converting part of the kinetic energy to be reduced in the delay process into storable energy and feeding this to a storage device.
  • the cutting tool is designed to be lifted upwards (in the Z direction) by the telescopic construction of the base 4 and can thus be spaced A can be changed to sheet goods.
  • the rail 11 of the linear motor has indicators 36 - here for reasons of redundancy even two.
  • Energy “obtained” on the linear motor in generator operation can be made available directly or indirectly (via an electricity storage device 26) to an electrical consumer of the device 1 or the material panel production system 23.
  • the power storage device has a take-off point 32 for this purpose, via which the drive 8, designed as a rotary motor 19, can call up energy.
  • the drive 8 and / or the power storage device 26 can be controlled or regulated accordingly via the control device 27 will.
  • the power storage device 26 has a take-off point 33, which is open for connecting an electrical consumer, but could be connected, for example, to an electrical consumer within the device 1 or the material panel production system 23.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Attitude Control For Articles On Conveyors (AREA)

Abstract

L'invention concerne un dispositif (1) de confection de panneaux de matériau (10), en particulier pour diviser un produit en bande (2) s'étendant le long de trois directions spatiales (X, Y, Z) et présentant des cotes finales dans au moins deux directions spatiales (Y, Z). Le dispositif (1) comprend au moins un système de coupe (5), comportant un outil de coupe (3) et une base (4), et un système de guidage (6). Au moins la base (4) du système de coupe (5) est disposée de manière à pouvoir être déplacée le long du système de guidage (6). Le dispositif (1) comporte un premier entraînement (7) pour déplacer l'outil de coupe (3) par rapport à la base (4) et un deuxième entraînement (8) pour déplacer la base (4) par rapport au système de guidage (6). L'invention vise à fournir un dispositif tel qui puisse fonctionner également à des vitesses de travail élevées, également à des fréquences de cycles élevées d'une installation de production de panneaux en matériau pouvant fonctionner en discontinu ou à des vitesses de bande élevées d'une installation de production de panneaux en matériau fonctionnant en continu, avec un faible encombrement et avantageusement de plus avec des besoins en énergie faibles. L'invention propose à cet effet que le dispositif comporte un troisième entraînement (9) prévu pour déplacer la même base (4) par rapport au système de guidage (6) que le deuxième entraînement (8).
PCT/EP2020/054654 2019-05-27 2020-02-21 Dispositif et procédé de confection de panneaux de matériau WO2020239275A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019003683.2A DE102019003683A1 (de) 2019-05-27 2019-05-27 Vorrichtung und Verfahren zur Konfektionierung von Werkstoffplatten
DE102019003683.2 2019-05-27

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WO2020239275A1 true WO2020239275A1 (fr) 2020-12-03

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WO (1) WO2020239275A1 (fr)

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