WO2022073695A1 - Maschine und verfahren zur herstellung einachsiger bewehrungsstahlstabmatten - Google Patents
Maschine und verfahren zur herstellung einachsiger bewehrungsstahlstabmatten Download PDFInfo
- Publication number
- WO2022073695A1 WO2022073695A1 PCT/EP2021/073907 EP2021073907W WO2022073695A1 WO 2022073695 A1 WO2022073695 A1 WO 2022073695A1 EP 2021073907 W EP2021073907 W EP 2021073907W WO 2022073695 A1 WO2022073695 A1 WO 2022073695A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- binding wire
- reinforcing
- wire
- binding
- reinforcing bar
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F27/00—Making wire network, i.e. wire nets
- B21F27/02—Making wire network, i.e. wire nets without additional connecting elements or material at crossings, e.g. connected by knitting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F27/00—Making wire network, i.e. wire nets
- B21F27/08—Making wire network, i.e. wire nets with additional connecting elements or material at crossings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F15/00—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire
- B21F15/10—Connecting wire to wire or other metallic material or objects; Connecting parts by means of wire wire with sheet metal
Definitions
- the present invention relates to one, in particular one for applications with a non-predominantly static load.
- steel bodies or rods are used to improve the static properties of concrete components, which absorb tensile forces and thus supplement the compressive strength of the concrete, so that the load-bearing capacity of the reinforced concrete components is improved.
- This is done in the form of steel bodies or rods made of reinforcing steel or round steel that are individually delivered to the construction site and interwoven there by hand, by installing welded uniaxial or biaxial reinforcing meshes or in segments with special shapes. Since uniaxial welded wire meshes can only absorb tensile forces in one direction, their longitudinal direction, it follows that two uniaxial welded wire meshes rotated by 90° to each other are necessary per reinforced concrete component so that it can absorb tensile forces and bending moments in every direction.
- the rebars produced by cold or hot deformation are usually not twisted, have an almost circular cross-section and a slopingly ribbed surface and possibly have longitudinal ribs.
- Reinforcing steel bars are often up to 12 m long and usually have diameters of up to 40 mm, meaning that they can weigh several hundred kilograms.
- the uniaxial reinforcing steel meshes have widths of up to 15 m and can contain reinforcing steel bars with different diameters and lengths.
- the thin steel strips with a certain width are used in order to be able to roll out the reinforcing steel bars in a directionally stable manner.
- the width of the tape ensures that it runs straight ahead and, after unrolling, the reinforcing steel bars lie exactly and stably in the previously calculated and planned position.
- reinforced concrete components and structures with loads that are not predominantly static such as those that occur in civil engineering or structural engineering and in building construction.
- Such reinforced concrete components are, for example, those of road and railway bridges that are exposed to changing loads from moving traffic, those of offshore wind turbines that are stressed by waves and those of systems that experience dynamic excitations from gusty winds or vortex shedding, such as towers and masts or skyscrapers.
- concrete components in industrial plants such as crane runways, forklift ceilings or machine foundations fall under these structures that are not predominantly statically loaded. With all of these components Material fatigue due to permanent, highly cyclic alternating stresses with a high number of load changes. This type of stress is a major cause of damage to the aforementioned components and works.
- EP 1 856 346 A1 discloses a machine for the production of uniaxial reinforcement mats, which feeds in the steel rods according to the same principle as described above, but does not weld them onto a large number of parallel, flat, flexible steel strips, but instead welds them at points that are axially spaced apart from one another which picks up rebar between two wires that are twisted together between the pick-up points.
- this machine two wires are twisted together to create a tightly twisted wire Wire strand, the individual strands of which are guided around a rebar that is fed in and which are accommodated in an eye formed in this way.
- DE 44 36 610 A1 discloses a machine in which reinforcing bars are fastened to belts by means of wire, with one wire connector being arranged above the bar and one underneath the belt. A wire connector shoots a wire into an open diverting groove of the second wire connector, which diverts it back onto the first where the wire enters a funnel shaped hole. The first wire connector rotates a few turns until the end of the wire shears off.
- the object of the present invention is therefore to specify a machine for the production of uniaxial reinforcing steel bar mats for a predominantly non-static load and a corresponding production method.
- the device task is solved by the machine described below, the method task by a method described further below.
- the machine according to the invention has a steel belt conveying device for conveying a plurality of mutually parallel and spaced support belts and a reinforcing bar conveying device on, the latter conveying individual reinforcing rods to form crossing points crossing onto the several support strips and preferably also positioning them longitudinally and axially, as well as several connecting units arranged to act at each crossing point, wherein a connecting unit has a binding wire conveying device which feeds a binding wire through a rotary unit wherein the rotary unit is movable relative to the fastener tape and the crossing reinforcing bar and is arranged on one side of the plane defined by both, and further comprises a binding wire guide unit which is arranged on the opposite side of the plane and which has a binding wire fed therein by the binding wire feeder is conveyed out and frictionally held in the opposite direction to the infeed direction, the rotating unit twisting and cutting the two strands of binding wire located on one side of the plane with one another, the rotating unit and the B inde wire guide unit to form a
- the reinforcement steel bars are fastened to broad, flat, flexible and track-stable support strips, in particular steel strips, which can be rolled out, but in a way that does not require the addition of material or the use of high-quality steel and is ideally suited for components with a non-predominantly static load.
- This is achieved by the wire loop according to the invention, which is looped around the support band and the conveyed-in reinforcing steel rod at their crossing points and connects them in a non-positive manner is.
- non-weldable material such as epoxy coated steel, galvanized material or stainless steel for the reinforcing rods and thus for the uniaxial mats is made possible by the wire binding according to the invention.
- a uniaxial reinforcing steel bar mat according to the invention therefore has a large number of such wire loops.
- the number of wire loops per reinforcement bar corresponds to the number of straps on which it is to be attached crossing them, so there are nx wire loops per n straps of the mat, where x is a number between 0 and n-2.
- the machine has a cutting device, in particular a knife, preferably a stationary knife in the area of the rotating unit.
- a cutting device in particular a knife, preferably a stationary knife in the area of the rotating unit.
- the rotary unit moves upwards away from the rebar, the binding wire being cut off by the appropriately shaped knife and at the same time being bent approximately against the direction of movement of the rotary unit due to the further movement of the rotary unit and the resistance of the knife , in particular even up to 180°.
- the bent free end of the binding wire produced in this way advantageously causes a pull-out resistance against being pulled out of the binding wire guide in the turning unit when turning, as a result of which the binding between the support strip and the reinforcing bar is tight and firm.
- the machine bends a cut-to-length wire binding produced by it between the support strip and the crossing reinforcing bar from a predominantly orthogonal orientation to the plane to a predominantly parallel orientation to the plane advantageously avoids a risk of injury from otherwise protruding wire ends.
- the wire end of the wire loop is in one plane with the wire after bending Reinforcement bars and the support strips in the unrolling direction and thus protected against contact with a user.
- the fastener tapes have guides for the binding wires, in particular openings and/or recesses, with the machine preferably producing these guides in situ.
- These guides advantageously create a guided, position-invariable binding wire loop around the node, which loop cannot loosen even if the support strip bends or buckles, for example when the uniaxial reinforcement mat is rolled up or down.
- the guides can be holes in the fastener tape - in particular oblong holes - or as indentations in the edge areas of the fastener tape or a combination of both.
- a distance A between two guides is selected depending on the diameter of the rebar to be connected, in particular the distance A is smaller than the diameter of the rebar to be fastened, a strong bond is always achieved with great advantage for any different diameters of the rebar .
- a bar width adapted to the bar diameter prevents the bar from twisting.
- the web width can also be wider than the rod diameter. This results in a kind of grip on the staff with positive effects on position stabilization and a firm bond.
- a length L of the binding wire 8 required for the connection varies depending on the diameter of the rebar to be connected in each case. This saves binding wire material on the one hand and on the other the generated twisted binding wire sections or free ends of the wire loops are always as short as possible and therefore protrude only a little.
- the method according to the invention for producing a uniaxial reinforcement mat from a plurality of mutually parallel and spaced-apart reinforcing bars, which are oriented orthogonally to a plurality of mutually parallel and spaced-apart support strips and are attached to these has the following steps: a) conveying in a reinforcing bar orthogonally parallel support strips spaced apart from one another along the longitudinal axes to produce a plurality of crossing points between the respective steel strip and the reinforcing bar, b) pressing the reinforcing bar onto the supporting strip in order to keep it in a tight position, c) feeding in a binding wire in the area of a crossing point around the steel strip and the reinforcing bar around to form a double binding wire strand on one side, d) cutting the binding wire to length and twisting the two binding wire strands into a twisted section.
- step d) is followed by a step e) of bending the twisted section in or in the direction of the plane defined by the support strips and reinforcing bars.
- step d) includes bending over the second free end of the binding wire produced by cutting it to length.
- a step f) of introducing guides into the carrier tape is provided.
- Fig. 2 a schematic sectional view of an embodiment of the machine in a first state
- Fig. 3 a schematic sectional view of an embodiment of the machine in a second state.
- Fig. 1 shows a binding wire loop according to the invention around a crossing point 5 of support strip 2 - here a flat, flexible steel strip - and a reinforcing rod 4 - here a rod made of reinforcing steel.
- Oblong holes 17 can be seen in the support strip 2, the narrowest edge distance A from one another being smaller than a diameter D of the reinforcing bar 4.
- the two elongated holes 17 are here an embodiment of the guide 14 according to the invention for the binding wire 8 in the form of openings 15.
- the binding wire 8 is guided through the two elongated holes 17, the two binding wire strands 11 of which are twisted into a twisting section 18 after the method according to the invention has been carried out Twisting section 18 is also bent according to the invention, in particular approximately parallel to the plane of the support strip 2 and the reinforcing bar 4, so as to avoid later protruding from the concrete and injuries to a user.
- Twisting section 18 is also bent according to the invention, in particular approximately parallel to the plane of the support strip 2 and the reinforcing bar 4, so as to avoid later protruding from the concrete and injuries to a user.
- the width of the support strips 2 of a uniaxial reinforcement mat is chosen so that it can be rolled out with safe straight running.
- the rebars 4 are selected from those with diameters between 6 mm and 40 mm, the distances between the parallel rebars 4 of a uniaxial reinforcement mat being freely selectable according to the requirements of the respective use of the uniaxial reinforcement mat. This is done by computer-controlled, optimized planning with regard to length, position, spacing, diameter, material, etc. A minimum spacing between two adjacent reinforcing rods 4 is preferably maintained in order to achieve security against crossing over.
- the edge distance A of the web of the support band 2 remaining between the elongated holes 17 is adapted to the rod diameter D to be bound. In particular, it is smaller or the same width as this one. The result of this is that the binding does not loosen even if the support band 2 bends or buckles, precisely during the rolling up during manufacture.
- this distance A is also selected to be wider than the rod diameter D. This results in a kind of clasping of the reinforcing bar 4 with positive effects on the stabilization of the position and at the same time a firm bond.
- FIG. 2 shows an embodiment of the invention in a first operating state.
- a rebar 4 is already on a
- a plurality of fastener tapes 2 are conveyed and, if necessary, positioned in relation to them in its axial direction.
- the support band conveyor 1 and the reinforcing bar conveyor 3 are shown purely schematically, the crossing point 5 is located below the illustrated reinforcing bar 4, the rounded binding wire guide unit 10 being arranged below the crossing point 5 and supporting band 2 and reinforcing bar 4 preferably partially encompassing.
- a binding wire conveyor 7 is shown schematically. This conveys the binding wire 8 through the rotary unit 9 in the direction of the crossing point 5.
- the connection unit 6 according to the invention consists of the components of the binding wire conveying device 7, the rotary unit 9 and the binding wire guide unit 10.
- the rotary unit 9 has a U-shaped body through which the Binding wire 8 is performed.
- the carrier tape 2 is guided through a punching unit 19, shown schematically, which introduces guides 14 in the form of elongated holes 17 into the carrier tape 2 in situ.
- the guides 14 can also be, for example, triangular or dovetail-like recesses in the edge regions of the support strip 2, in particular recesses offset diagonally to the longitudinal axis of the support strip 2 or openings 15 shaped differently than slots.
- a carrier tape 2 already provided with guides 14 during production is used according to the invention.
- the operating state shown is the one before the connection.
- the turning unit 9 and the binding wire guide unit 10 are moved close to one another, so that the binding wire 8 is fed into the wire guide unit 10 below the crossing point 5 of the support band 2 and the reinforcing bar 4 without a gap and is fed out again in the opposite direction to the feeding direction.
- a specific overhang length being selected depending on the diameter D of the rod 4 to be fastened after it has been conveyed out.
- FIG. 3 shows a second operating state in which the connection is made by creating a tightened wire loop.
- the rotating unit 9 is raised above the rod cross section.
- the binding wire is cut off by means of a knife 13 as a cutting device 12 in front of the rotary unit 9, viewed in the conveying direction of the binding wire 8, and the second free wire end thus produced, preferably due to the shape of the knife 13, is simultaneously bent by the latter, preferably in the direction of the reinforcing bar 2
- this bent end creates a pull-out resistance against pulling out due to the shortening of the protruding wire length resulting from the twisting. This makes the binding tight and strong.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Wire Processing (AREA)
- Reinforcement Elements For Buildings (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP21763389.0A EP4225517A1 (de) | 2020-10-09 | 2021-08-30 | Maschine und verfahren zur herstellung einachsiger bewehrungsstahlstabmatten |
US18/027,161 US20230330737A1 (en) | 2020-10-09 | 2021-08-30 | Machine and method for producing simply reinforced steel wire meshes |
JP2023522474A JP2023545805A (ja) | 2020-10-09 | 2021-08-30 | 一軸鉄筋メッシュの製造装置および製造方法 |
CA3189863A CA3189863A1 (en) | 2020-10-09 | 2021-08-30 | Machine and method for producing uniaxial reinforced wire meshes |
AU2021358290A AU2021358290B2 (en) | 2020-10-09 | 2021-08-30 | Machine and method for producing simply reinforced steel wire meshes |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102020126584.0 | 2020-10-09 | ||
DE102020126584.0A DE102020126584B3 (de) | 2020-10-09 | 2020-10-09 | Maschine und Verfahren zur Herstellung einachsiger Bewehrungsstahlstabmatten |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2022073695A1 true WO2022073695A1 (de) | 2022-04-14 |
Family
ID=77595581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2021/073907 WO2022073695A1 (de) | 2020-10-09 | 2021-08-30 | Maschine und verfahren zur herstellung einachsiger bewehrungsstahlstabmatten |
Country Status (7)
Country | Link |
---|---|
US (1) | US20230330737A1 (de) |
EP (1) | EP4225517A1 (de) |
JP (1) | JP2023545805A (de) |
AU (1) | AU2021358290B2 (de) |
CA (1) | CA3189863A1 (de) |
DE (1) | DE102020126584B3 (de) |
WO (1) | WO2022073695A1 (de) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1966698A1 (de) * | 1969-12-02 | 1973-11-08 | Haller Hans | Vorrichtung zur herstellung einer bewehrung |
EP0122883A2 (de) * | 1983-04-15 | 1984-10-24 | MRK Marketing and Management Techniques (UK) Limited | Verfahren zum maschinellen Verbinden der Stäbe eines Stabnetzes und Anlage zum maschinellen Verbinden der Stäbe eines Stabnetzes |
DE9412405U1 (de) * | 1994-04-13 | 1995-08-10 | Häussler, Wilhelm, Dipl.-Ing. Dipl.-Kaufm., 87629 Füssen | Bewehrungsmatte für Stahlbeton-Flächentragwerke sowie Maschine zu deren Herstellung |
EP0677343A1 (de) * | 1994-04-13 | 1995-10-18 | Wilhelm Häussler | Verfahren und Maschine zur Fertigung individueller Bewehrungen für Stahlbetonflächentragwerke |
EP0862958A2 (de) | 1997-03-07 | 1998-09-09 | Hans Hundegger | Maschine für die Herstellung von Bewehrungsstahlmatten |
WO2004009266A1 (en) * | 2002-07-23 | 2004-01-29 | Stema Engineering A/S | Method and apparatus for the manufacture of concrete reinforcing rod mesh |
EP1856346A1 (de) | 2005-02-17 | 2007-11-21 | Spinmaster ApS | Verfahren, vorrichtung und mittel zur herstellung einer verstärkungsmatte |
DE102009000298A1 (de) | 2009-01-19 | 2010-07-22 | Robert Bosch Gmbh | Verfahren zum Abgleich eines Lambdasensorsignals und Vorrichtung zur Durchführung des Verfahrens |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008017750A1 (de) | 2008-04-07 | 2009-10-08 | Bam Ag | Maschine zur Herstellung einachsiger Bewehrungstahlmatten |
-
2020
- 2020-10-09 DE DE102020126584.0A patent/DE102020126584B3/de active Active
-
2021
- 2021-08-30 JP JP2023522474A patent/JP2023545805A/ja active Pending
- 2021-08-30 EP EP21763389.0A patent/EP4225517A1/de active Pending
- 2021-08-30 US US18/027,161 patent/US20230330737A1/en active Pending
- 2021-08-30 CA CA3189863A patent/CA3189863A1/en active Pending
- 2021-08-30 WO PCT/EP2021/073907 patent/WO2022073695A1/de unknown
- 2021-08-30 AU AU2021358290A patent/AU2021358290B2/en active Active
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1966698A1 (de) * | 1969-12-02 | 1973-11-08 | Haller Hans | Vorrichtung zur herstellung einer bewehrung |
EP0122883A2 (de) * | 1983-04-15 | 1984-10-24 | MRK Marketing and Management Techniques (UK) Limited | Verfahren zum maschinellen Verbinden der Stäbe eines Stabnetzes und Anlage zum maschinellen Verbinden der Stäbe eines Stabnetzes |
DE9412405U1 (de) * | 1994-04-13 | 1995-08-10 | Häussler, Wilhelm, Dipl.-Ing. Dipl.-Kaufm., 87629 Füssen | Bewehrungsmatte für Stahlbeton-Flächentragwerke sowie Maschine zu deren Herstellung |
EP0677343A1 (de) * | 1994-04-13 | 1995-10-18 | Wilhelm Häussler | Verfahren und Maschine zur Fertigung individueller Bewehrungen für Stahlbetonflächentragwerke |
DE4436610A1 (de) | 1994-04-13 | 1995-10-19 | Haeussler Wilhelm Dipl Ing Dip | Verfahren zur Fertigung von Bewehrungen für Stahlbeton-Flächentragwerke und Maschine zur Herstellung von Bewehrungsmatten |
EP0862958A2 (de) | 1997-03-07 | 1998-09-09 | Hans Hundegger | Maschine für die Herstellung von Bewehrungsstahlmatten |
WO2004009266A1 (en) * | 2002-07-23 | 2004-01-29 | Stema Engineering A/S | Method and apparatus for the manufacture of concrete reinforcing rod mesh |
EP1856346A1 (de) | 2005-02-17 | 2007-11-21 | Spinmaster ApS | Verfahren, vorrichtung und mittel zur herstellung einer verstärkungsmatte |
DE102009000298A1 (de) | 2009-01-19 | 2010-07-22 | Robert Bosch Gmbh | Verfahren zum Abgleich eines Lambdasensorsignals und Vorrichtung zur Durchführung des Verfahrens |
Also Published As
Publication number | Publication date |
---|---|
AU2021358290A1 (en) | 2023-03-16 |
US20230330737A1 (en) | 2023-10-19 |
AU2021358290B2 (en) | 2023-08-10 |
DE102020126584B3 (de) | 2021-12-30 |
JP2023545805A (ja) | 2023-10-31 |
EP4225517A1 (de) | 2023-08-16 |
CA3189863A1 (en) | 2022-04-14 |
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