WO2020218338A1 - Rouleau de cabestan et machine de tréfilage - Google Patents

Rouleau de cabestan et machine de tréfilage Download PDF

Info

Publication number
WO2020218338A1
WO2020218338A1 PCT/JP2020/017337 JP2020017337W WO2020218338A1 WO 2020218338 A1 WO2020218338 A1 WO 2020218338A1 JP 2020017337 W JP2020017337 W JP 2020017337W WO 2020218338 A1 WO2020218338 A1 WO 2020218338A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
peripheral surface
metal core
capstan
lock pin
Prior art date
Application number
PCT/JP2020/017337
Other languages
English (en)
Japanese (ja)
Inventor
小林　一樹
邦宏 山部
Original Assignee
京セラ株式会社
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 京セラ株式会社 filed Critical 京セラ株式会社
Priority to JP2021516159A priority Critical patent/JP7204901B2/ja
Publication of WO2020218338A1 publication Critical patent/WO2020218338A1/fr

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
    • B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
    • B21C1/14—Drums, e.g. capstans; Connection of grippers thereto; Grippers specially adapted for drawing machines or apparatus of the drum type; Couplings specially adapted for these drums

Definitions

  • This disclosure relates to a capstan roll and a wire drawing machine using the capstan roll.
  • a thin wire having a wire diameter of about 15 to 50 ⁇ m is used as a bonding wire for a semiconductor device that electrically bonds an electrode on a semiconductor element and an external lead.
  • Wires such as bonding wires are manufactured by a wire drawing machine equipped with a capstan roll.
  • Patent Document 1 a ceramic outer roll is provided on the outer peripheral side of the metal core which is the core, and a lock pin (round bar) is embedded in a groove provided on the outer peripheral surface of the metal core and the inner peripheral surface of the ceramic outer roll.
  • a capstan roll that is fixed with is disclosed to prevent rotation.
  • the metal core body has a through hole in the center, and the rotation shaft is inserted through the through hole. At this time, since it is necessary to prevent the metal core from rotating with respect to the rotating shaft, key grooves are provided on the outer peripheral surface of the rotating shaft and the inner peripheral surface of the metal core, respectively, and the key is fitted in the key grooves. Is being done.
  • the capstan roll of the present disclosure is composed of an annular body having a through hole through which a rotation shaft is inserted in a central portion, and is formed on a metal core body having a key groove on the inner peripheral surface of the annular body and an outer peripheral surface of the metal core body. It comprises a ceramic outer roll to be mounted.
  • the outer peripheral surface of the metal core and the inner peripheral surface of the ceramic outer roll are respectively formed with recesses facing each other to form a hole for inserting a lock pin, and the hole for inserting a lock pin is a rotating shaft. It extends radially from the axis of the metal core and is located outside the region covering the keyway of the metal core.
  • the wire drawing machine of the present disclosure includes the above-mentioned capstan roll.
  • FIG. 5 is a sectional view taken along line XX of FIG. 1A. It is a perspective view of the capstan roll shown in FIG. 1A. It is a cross-sectional view which expanded the part A of FIG. 1B. It is a partial cross-sectional view which shows the mounting state to the rotating shaft of a capstan roll.
  • A) is a partial cross-sectional view showing an example of a state in which the lock pin is inserted into the lock pin insertion hole portion in the present disclosure
  • (b) is a perspective view showing the lock pin used in (a).
  • (A) is a partial cross-sectional view showing another example of the state in which the lock pin is inserted into the lock pin insertion hole portion in the present disclosure
  • (b) is a perspective view showing the lock pin used in (a).
  • (A) is a partial cross-sectional view showing still another example of the state in which the lock pin is inserted into the lock pin insertion hole portion in the present disclosure
  • (b) is a perspective view showing the lock pin used in (a).
  • capstan roll and the wire drawing machine according to the embodiment of the present disclosure will be described with reference to the drawings.
  • FIGS. 1A to 1C show Capstan Roll 1 according to an embodiment of the present disclosure.
  • the capstan roll 1 includes a metal core body 2 and a ceramic outer roll 3 mounted on the outer peripheral surface of the metal core body 2.
  • the metal core 2 is made of an annular body having a through hole 4 in the center, and a key groove 5 is provided on the inner peripheral surface of the annular body.
  • the metal core 2 is preferably formed of, for example, carbon steel for machine structure (S45C or the like), an aluminum alloy, stainless steel, or the like.
  • the main component of the ceramic outer roll 3 is preferably, for example, zirconium oxide, aluminum oxide, silicon nitride, sialon, or the like.
  • the main component is a component that accounts for 80% by mass or more of 100% by mass of all the components constituting the ceramics.
  • Ceramics containing zirconium oxide as a main component may contain, for example, silicon oxide and / or aluminum oxide as components other than the main component. Further, the ceramics containing aluminum oxide as a main component may contain at least one selected from, for example, silicon oxide, calcium oxide, magnesium oxide and boron oxide as components other than the main component.
  • Ceramics containing aluminum oxide as a main component may contain, for example, silicon, magnesium and boron in the following ranges in terms of the following oxides.
  • SiO 2 3% by mass to 5% by weight
  • MgO 1% by weight to 1.5% by weight
  • B 2 O 3 0.5% by mass to 3.5% by weight
  • NiO 4 mass ppm or less
  • the silicon oxide has the effect of firmly bonding the aluminum oxide particles to each other in the sintering step and suppressing the growth of the aluminum oxide particles.
  • the silicon oxide content is within the above range, the hardness of the outer peripheral surface 3c of the ceramic outer roll 3 can be increased, so that the wear resistance is improved and the wire W is in sliding contact with the outer peripheral surface 3c. However, shedding can be reduced.
  • Magnesium oxide firmly bonds aluminum oxide particles to each other in the sintering process.
  • the content of silicon oxide is in the above range, shedding is reduced even if the wire W is in sliding contact with the outer peripheral surface 3c, and the formation of magnesium aluminate having a linear expansion coefficient different from that of aluminum oxide is suppressed. Even if it is used in an environment where the temperature rises and falls repeatedly, cracks are less likely to occur.
  • Boron oxide has a large effect of suppressing the growth of aluminum oxide particles in the firing process.
  • the oxide of boron is in the above range, the abrasion resistance and the corrosion resistance to acid are improved.
  • Alminoborate eg, Al 18 B 4 O 33 , Al 5 BO 9
  • Alminoborate may be present as crystals. If there are crystals of alminoborate, even if a mechanical impact is applied to the outer peripheral surface 3c of the ceramic outer roll 3 to cause microcracks, the cracks will occur due to the crystals of aluminoborate such as Al 18 B 4 O 33 . Progress is hampered.
  • the crystal shape of alminoborate is, for example, columnar.
  • the ceramics containing aluminum oxide as a main component further contains nickel, and the content thereof may be 4 mass ppm or less in terms of oxide (NiO).
  • NiO oxide
  • Ceramics containing silicon nitride or sialon as a main component may contain, for example, aluminum oxide and / or a rare earth metal oxide as a component other than the main component.
  • the results obtained by measurement using an X-ray diffractometer (XRD) are collated with a JCPDS card to identify the contained compounds.
  • ZrO 2 is contained from the measurement by XRD and the value (content) obtained by converting the Zr value obtained by ICP into ZrO 2 is 80% by mass or more, oxidation is performed.
  • Zirconium is the main component of ceramics.
  • a component having a content of about ppm by mass, for example, Ni may be determined using a glow discharge mass spectrometer (GDMS) and converted into an oxide (NiO).
  • the rotating shaft 6 of the wire drawing machine is inserted into the through hole 4 of the metal core body 2.
  • the key 8 is fitted in the key groove 5 provided on the inner peripheral surface of the metal core body 2 so as to straddle the key groove 7 formed on the rotating shaft 6.
  • the capstan roll 1 is prevented from rotating with respect to the rotating shaft 6, and can be reliably driven to the rotation of the rotating shaft 6.
  • the outer peripheral surface of the metal core 2 and the inner peripheral surface of the ceramic outer roll 3 are bonded by filling resin between them, but it is not sufficient to suppress rotation by bonding alone. Therefore, as shown in FIGS. 1A to 1C, the outer peripheral surface of the metal core 2 and the inner peripheral surface of the ceramic outer roll 3 face each other and have holes for inserting lock pins (hereinafter, simply abbreviated as holes). ) The recesses 10a and 10b forming the 9 are formed, and the metal lock pin 11 is inserted into the hole 9. As a result, the ceramic outer roll 3 can be fixed to the metal core 2, and the ceramic outer roll 3 can be prevented from rotating with respect to the metal core 2.
  • the lock pin 11 is made of, for example, carbon steel for mechanical structure (S45C or the like) or structural steel for mechanical alloy (SCM435).
  • structural steel for mechanical alloys (SCM435) has high mechanical strength and toughness, and is therefore preferably used as the lock pin 11. It is preferable that a plurality of holes 9 are provided in the circumferential direction of the metal core 2 and the ceramic outer roll 3.
  • the plurality of holes 9 are located at positions that extend radially from the axis A of the rotating shaft 6 and deviate from the region B that covers the keyway 5 of the metal core 2.
  • the region B is defined by two lines b1 and b2 passing through both ends of the bottom of the recess forming the axis A and the keyway 5.
  • the hole 9 extends radially from the axis A of the rotating shaft 6 and deviates from the center line C passing through the center of the key groove of the metal core 2 by 30 ° or more, preferably 45 ° or more in the circumferential direction. It should be in position. That is, in FIG.
  • the angle ⁇ between the center of the hole 9 and the center line C is 30 ° or more, preferably 45 ° or more. As shown in FIG. 1A, the angle ⁇ is a clockwise and counterclockwise angle from the center line C, so that the distance between the two holes 9 and 9 is preferably at least 60 °.
  • the hole 9 is formed at a position outside the region B where the key groove 5 is located, the distance between the hole 9 and the key groove 5 is widened, and the capstan roll 1 is rotated at high speed by the wire. Even if the ceramic outer roll 3 is pulled, the mechanical strength of the portion sandwiched between the hole 9 and the key groove 5 is maintained, so that the ceramic outer roll 3 can be suppressed from being damaged.
  • FIG. 1D is an enlarged cross-sectional view of part A of FIG. 1B.
  • the ceramic outer roll 3 includes a straight body portion 3a and a flange portion 3b extending radially outward at at least one end of the straight body portion 3a, and the straight body portion 3a
  • the connecting surface 3d of the flange portion 3b connected to the outer peripheral surface 3c of the above may be inclined so that the width of the outer peripheral surface 3e of the flange portion 3b is narrowed.
  • the angle (inclination angle ⁇ ) formed by the connecting surface 3d and the end surface 3f of the flange portion 3b is preferably, for example, 3 ° or more and 7 ° or less.
  • FIG. 3A shows an example of the state in which the lock pin 11 is inserted into the hole 9.
  • the hole 9 has a circular cross section. Therefore, the lock pin 11 also has a cylindrical shape as shown in FIGS. 3A and 3B.
  • the position of the top surface of the lock pin 11 is preferably a position recessed by 0.1 mm to 0.5 mm from the end surface 3f of the flange portion 3b toward the inside of the metal core body 2.
  • the gap S between the outer peripheral surface of the metal core 2 and the inner peripheral surface of the ceramic outer roll 3 is preferably filled with a resin such as a thermosetting resin, an epoxy resin, or a silicon-based resin.
  • a resin such as a thermosetting resin, an epoxy resin, or a silicon-based resin.
  • epoxy resin it is preferable that it is a two-component mixed room temperature curing type. Since it does not have to be cured at a high temperature, it is less susceptible to deformation due to heat.
  • the gap S between the outer peripheral surface of the metal core 2 and the inner peripheral surface of the ceramic outer roll 3 is provided with an adhesive layer (not shown) containing an epoxy resin as a main component and an amine compound.
  • the adhesive layer having such a structure has almost no decrease in adhesive strength even when exposed to a high temperature environment for several months, so that long-term reliability is improved even when the capstan roll is used in such an environment.
  • the main component of the adhesive layer is the component having the highest content among the components constituting the adhesive layer.
  • the components constituting the adhesive layer may be identified using a Fourier transform infrared spectroscopic analyzer (FTIR) or a gas chromatograph (GCmass).
  • FIG. 4A shows another example different from FIG. 3A.
  • the outer peripheral surface of the metal core 2 and the inner circumference of the ceramic outer roll 3 forming the hole 91 are shown.
  • the recesses 10a ′ and 10b ′ formed on the surface respectively have a straight portion L intersecting the circumferential direction (direction indicated by the arrow Y) of the metal core body 2 and the ceramic outer roll 3.
  • the lock pin 111 inserted into the hole 91 has a rectangular cross section having a straight portion 111a facing the straight portion L.
  • the straight line portion L preferably intersects the circumferential direction Y. Further, the straight portion L may be formed in only one of the recesses 10a and 10b.
  • a straight portion L is provided on the inner peripheral surface of the hole portion 91, and the lock pin 111 also has a rectangular cross section corresponding to the linear portion L, so that the capstan roll 1 is locked with the hole portion 91 in the rotation direction (that is, the Y direction).
  • the pin 111 comes into surface contact with the pin 111, and the strength can be improved against the shear stress generated by the tension of the wire due to the high-speed rotation of the capstan roll 1.
  • FIG. 5A shows still another example, and as shown in FIG. 5, the inner peripheral surface of the hole 92 is the circumferential direction of the metal core 2 and the ceramic outer roll 3 (direction indicated by the arrow Y). It has a straight portion L'intersecting with respect to.
  • the lock pin 112 inserted into the hole 91 has a straight portion 112a facing the straight portion L'as shown in FIGS. 5A and 5B. Others are the same as the examples shown in FIGS. 4A and 4B.
  • the wire drawing machine 20 shown in FIG. 6 has a so-called parallel hanging wire drawing structure.
  • the rotating shafts 6a and 6b are arranged at predetermined positions inside the machine base 21, and the cone-shaped capstan roll 100 is fixed to both of the rotating shafts 6a and 6b. That is, the capstan rolls 100 fixed to the respective rotation shafts 6a and 6b rotate in accordance with the rotation of the rotation shafts 6a and 6b, respectively.
  • a plurality of dies (dice group) 12 are arranged in the gap between the rotating shaft 6a and the rotating shaft 6b.
  • the cone-shaped capstan roll 100 is a combination of a plurality of stages of capstan rolls 1 whose outer diameter gradually increases from one end (I) to the other end (II). , A plurality of steps of outer peripheral surfaces 1a serving as sliding contact surfaces are provided.
  • the cone-shaped capstan roll 100 is a wire drawing machine for stretching the wire W, and is rotatably installed by the rotation of the rotating shaft 3. For example, the cone-shaped capstan roll 100 rotates at 1000 rpm to 6000 rpm.
  • the capstan roll 1 of the present disclosure is not limited to only one stage as shown in FIGS. 1A to 1C, but also includes a cone-shaped capstan roll 100 in which a plurality of stages are integrally formed.
  • the wire drawing machine 20 includes a drive motor 13, a drive pulley 14, a driven pulleys 15 and 16, a drive belt 17, and a driven belt 18 at the end of the machine base 21.
  • a drive belt 17 is hung around the drive pulley 14 and the driven pulleys 15 and 16, the drive pulley 14 is rotated by the drive motor 13, and both the driven pulleys 15 and 16 are driven and rotated.
  • the driven pulley 15 is connected to the rotating shaft 6b, the drive pulley 14 is connected to the rotating shaft 6a, and the rotating shafts 6a and 6b are rotationally driven by the drive motor 13.
  • the wire W sent from the outside via the guide roller (not shown) is conveyed while being hung around the two capstan rolls 100.
  • the wire W sent from the outside is passed through the die group 12 arranged between the capstan rolls 100 and 100, and the two capstan rolls 100 are rotated by driving the drive motor 13.
  • the wire W is sequentially hung from the one having the smaller outer diameter to the one having the larger outer diameter (from the upper side to the lower side in the illustrated surface) among the multi-stage sliding contact surfaces of the capstan roll 100. ..
  • the wire W is made of, for example, Cu.
  • the wire W may be various metal wires such as Au and Al other than Cu.
  • the capstan roll 100 is rotated by the drive of the drive motor 13, and the wire W is forcibly and sequentially passed through the die group 12 while being reduced in diameter and drawn.
  • FIG. 6 shows a device using two capstan rolls 100, the device may be installed by further increasing the number of capstan rolls 100.
  • capstan roll of the present disclosure is not limited to the above embodiments, and various improvements and improvements can be made.
  • Capstan roll 1a Outer surface 2 Metal core 3 Ceramic outer roll 3a Straight body 3b Border 3c Outer surface 3d Connection surface 3e Outer surface 3f End surface 4 Through hole 5 Key groove 6, 6a, 6b Rotating shaft 7 Key groove 8 keys 9 Lock pin insertion holes 10a, 10b Recesses 11, 111, 112 Lock pins 111a Straight part 112a Straight part 12 Die 13 Drive motor 14 Drive pulley 15, 16 Drive pulley 17 Drive belt 18 Drive belt 20 Wire drawing machine 21 Machine stand 100 Cone-shaped capstan roll A Axial center B Region C Center line L, L'Straight line S Gap Y Circumferential direction W wire

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Extraction Processes (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Abstract

L'invention concerne un rouleau de cabestan pourvu : d'un noyau métallique comprenant un corps annulaire ayant dans sa section centrale un trou traversant à travers lequel pénètre un arbre rotatif, le noyau métallique étant pourvu d'une rainure de clavette dans la surface périphérique interne du corps annulaire ; et d'un rouleau externe en céramique fixé à la surface périphérique externe du noyau métallique. Des sections d'évidement qui se font face et dans lesquelles est formée une section de trou d'insertion de broche de verrouillage sont formées sur la surface périphérique externe du noyau métallique et sur la surface périphérique interne du rouleau externe en céramique, et la section de trou d'insertion de broche de verrouillage est positionnée de façon à s'écarter d'une région qui s'étend radialement à partir du centre axial de l'arbre rotatif et recouvre la rainure de clavette du noyau métallique.
PCT/JP2020/017337 2019-04-25 2020-04-22 Rouleau de cabestan et machine de tréfilage WO2020218338A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2021516159A JP7204901B2 (ja) 2019-04-25 2020-04-22 キャプスタンロールおよび伸線機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019083722 2019-04-25
JP2019-083722 2019-04-25

Publications (1)

Publication Number Publication Date
WO2020218338A1 true WO2020218338A1 (fr) 2020-10-29

Family

ID=72941976

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2020/017337 WO2020218338A1 (fr) 2019-04-25 2020-04-22 Rouleau de cabestan et machine de tréfilage

Country Status (2)

Country Link
JP (1) JP7204901B2 (fr)
WO (1) WO2020218338A1 (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457456A (en) * 1977-10-06 1979-05-09 Coors Porcelain Co Conical shaped line drawing block with step
JPS55134011U (fr) * 1979-03-15 1980-09-24
JPS5942115A (ja) * 1982-09-01 1984-03-08 Nippon Steel Corp 鋼線の連続引抜機
JPH05115916A (ja) * 1991-01-14 1993-05-14 Daido Steel Co Ltd 伸線機キヤプスタンロール
JP2008195591A (ja) * 2007-02-15 2008-08-28 Kyocera Corp アルミナ質焼結体及びその製造方法
JP2010234384A (ja) * 2009-03-30 2010-10-21 Kyocera Corp キャプスタンロールおよび伸線機
JP2013160335A (ja) * 2012-02-07 2013-08-19 Ntn Corp 電動式直動アクチュエータおよび電動式ブレーキ装置
JP2015042736A (ja) * 2013-07-26 2015-03-05 国立大学法人九州工業大学 潜在性硬化触媒、熱硬化性樹脂組成物及び樹脂封止型半導体装置
JP2017136607A (ja) * 2016-02-02 2017-08-10 京セラ株式会社 伸線装置用キャプスタン
JP2019025506A (ja) * 2017-07-28 2019-02-21 京セラ株式会社 キャプスタンロール

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5457456A (en) * 1977-10-06 1979-05-09 Coors Porcelain Co Conical shaped line drawing block with step
JPS55134011U (fr) * 1979-03-15 1980-09-24
JPS5942115A (ja) * 1982-09-01 1984-03-08 Nippon Steel Corp 鋼線の連続引抜機
JPH05115916A (ja) * 1991-01-14 1993-05-14 Daido Steel Co Ltd 伸線機キヤプスタンロール
JP2008195591A (ja) * 2007-02-15 2008-08-28 Kyocera Corp アルミナ質焼結体及びその製造方法
JP2010234384A (ja) * 2009-03-30 2010-10-21 Kyocera Corp キャプスタンロールおよび伸線機
JP2013160335A (ja) * 2012-02-07 2013-08-19 Ntn Corp 電動式直動アクチュエータおよび電動式ブレーキ装置
JP2015042736A (ja) * 2013-07-26 2015-03-05 国立大学法人九州工業大学 潜在性硬化触媒、熱硬化性樹脂組成物及び樹脂封止型半導体装置
JP2017136607A (ja) * 2016-02-02 2017-08-10 京セラ株式会社 伸線装置用キャプスタン
JP2019025506A (ja) * 2017-07-28 2019-02-21 京セラ株式会社 キャプスタンロール

Also Published As

Publication number Publication date
JPWO2020218338A1 (fr) 2020-10-29
JP7204901B2 (ja) 2023-01-16

Similar Documents

Publication Publication Date Title
US6919665B2 (en) Stator core, an electric motor in which it is utilized, and method of manufacturing a stator core
US20050249618A1 (en) Vacuum pump
WO2020218338A1 (fr) Rouleau de cabestan et machine de tréfilage
US6705830B2 (en) Vacuum pump
CN102528940A (zh) 结构化锯线
WO2010016583A1 (fr) Stator, moteur et compresseur
JP4625035B2 (ja) シャフトアッセンブリ
US6599084B1 (en) Rotor fixture for a friction vacuum pump
JPWO2017138154A1 (ja) 真空ポンプ及び該真空ポンプに用いられる可撓性カバー及びロータ
EP1998048B1 (fr) Pompe moleculaire et bride
CN108930656A (zh) 真空排气装置、真空泵及真空阀
CN103486131A (zh) 流体动态轴承组件及其制造方法
JP3712100B2 (ja) 回転子の組立方法、回転子、ステッピングモータ
TWI586893B (zh) Vacuum pump
JP6567984B2 (ja) 伸線装置用キャプスタン
US6619847B1 (en) Ceramic dynamic-pressure bearing, motor having bearing, hard disk drive, and polygon scanner
JP6767283B2 (ja) 伸線装置用キャプスタン
JP6878191B2 (ja) 伸線加工用キャプスタンロール
JP2017159366A (ja) キャプスタンロール
US10680484B2 (en) Method of protecting lamination stacks of a component of an electric machine and component obtained by the method
US7215508B2 (en) Ceramic dynamic-pressure bearing and hard disk drive using the same
US20100196187A1 (en) Vacuum pump for a motor vehicle engine
JP2011027049A (ja) ターボ分子ポンプ
EP0997646A2 (fr) Pompe à vide
JP5136262B2 (ja) 回転真空ポンプ

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20794047

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021516159

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20794047

Country of ref document: EP

Kind code of ref document: A1