WO2008029910A1 - Procédé de formation d'un corps de canette doté de nervures - Google Patents

Procédé de formation d'un corps de canette doté de nervures Download PDF

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Publication number
WO2008029910A1
WO2008029910A1 PCT/JP2007/067489 JP2007067489W WO2008029910A1 WO 2008029910 A1 WO2008029910 A1 WO 2008029910A1 JP 2007067489 W JP2007067489 W JP 2007067489W WO 2008029910 A1 WO2008029910 A1 WO 2008029910A1
Authority
WO
WIPO (PCT)
Prior art keywords
female die
punch
forming
gas
pellet
Prior art date
Application number
PCT/JP2007/067489
Other languages
English (en)
Japanese (ja)
Inventor
Keijiro Murayama
Katsuhiko Murayama
Jyunichi Tamura
Masakazu Konishi
Original Assignee
Max Co., Ltd.
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 Max Co., Ltd. filed Critical Max Co., Ltd.
Publication of WO2008029910A1 publication Critical patent/WO2008029910A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/60—Contents and propellant separated
    • B65D83/62—Contents and propellant separated by membrane, bag, or the like
    • 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
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/20—Making uncoated products by backward extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
    • B21D17/02—Forming single grooves in sheet metal or tubular or hollow articles by pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D51/00—Making hollow objects
    • B21D51/16—Making hollow objects characterised by the use of the objects
    • B21D51/26—Making hollow objects characterised by the use of the objects cans or tins; Closing same in a permanent manner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/38—Details of the container body
    • B65D83/384—Details of the container body comprising an aerosol container disposed in an outer shell or in an external container

Definitions

  • the present invention relates to a method for forming a can body in which an inner can or an outer can has ribs.
  • a gas cartridge including an outer can which is an outer container and an inner can which is disposed inside the outer can and is filled with a liquefied gas.
  • the compressed high pressure gas is filled in the internal space between the inner can and the outer can.
  • the gas filled in the inner can is released (injected) by compressing and deforming the inner can using the pressure of the high-pressure gas filled in the inner space.
  • the outer can and the inner can are preferably made of aluminum.
  • the inner can is preferably made of a thin-walled aluminum because it is deformed by the pressure of high-pressure gas and the inner gas is difficult to permeate to the outside (for example, disclosed in Japanese Patent No. 2873691). See the two-chamber structured pressure filling device).
  • the gas in the inner can is released by compressing the inner can by the pressure of the high-pressure gas filled in the inner space between the inner can and the outer can and deforming the recess. Is done.
  • the deformation of the inner can using the pressure of force gas is a free deformation and does not deform equally.
  • the weak part is compressed and deformed into a dent, and the deformation of this part is further promoted, so that only one part is greatly deformed into a dent.
  • a separate frame-like member is arranged between the inner can and the outer can, and only the portion where the frame-like member is arranged is deformed during gas filling.
  • Method (1) the cost increases.
  • Method (2) requires a processing step of crushing part of the outer can surface.
  • method (3) the inner can is easier to wrinkle when filling the gas, so pinholes are likely to occur in the inner can.
  • both methods have problems.
  • One or more embodiments of the present invention provide a method of forming a can having a rib for effectively preventing cracks and pinholes in an inner can at low cost.
  • a method for forming a can body having a rib on an outer surface is a method in which a female die having a substantially circular cross section and having a plurality of grooves on an inner peripheral surface is pressed.
  • a cylindrical punch having an outer diameter smaller than the inner diameter of the female mold, the pellet being disposed on the bottom of the female mold, Pressing against the pellets in the female mold.
  • a method for forming a can having a rib on an inner surface includes forming a female die having a substantially circular cross section in a press die, and Forming a plurality of grooves on the outer peripheral surface of a cylindrical punch having a small outer diameter, disposing pellets on the bottom of the female mold, and pressing the punch against the pellets in the female mold; Prepare. Brief Description of Drawings
  • FIG. 1 is a perspective view of a gas cartridge according to an embodiment of the present invention.
  • FIG. 2A is a longitudinal sectional view of the gas cartridge before gas filling.
  • FIG. 2B is a cross-sectional view of the XX spring in FIG. 2A.
  • FIG. 3 is an exploded perspective view of the gas cartridge according to the first embodiment of the present invention.
  • FIG. 4A is a cross-sectional view of the gas cartridge when gas is not filled.
  • FIG. 4B is a cross-sectional view of the gas cartridge after fuel gas filling.
  • FIG. 4C is a cross-sectional view of the gas cartridge while the fuel gas in the inner can is being consumed.
  • FIG. 5 is a longitudinal sectional view of a gas cartridge after gas filling.
  • FIG. 6 is a perspective view showing the inner can molding method according to the first embodiment.
  • FIG. 7A is a central longitudinal sectional view showing a state immediately before the inner can is molded.
  • FIG. 7B is a central longitudinal sectional view showing a state in the middle of molding the inner can.
  • FIG. 7C is a central cross-sectional view showing the final state of the inner can molding process.
  • FIG. 8 is a cross-sectional view of an inner can according to another embodiment of the present invention.
  • FIG. 9 is an exploded perspective view of a gas cartridge according to a second embodiment of the present invention.
  • FIG. 10A is a cross-sectional view of the gas cartridge before filling with gas.
  • FIG. 10B is a cross-sectional view of the gas cartridge after filling with gas.
  • FIG. 11 is a perspective view showing a method for forming an outer can according to a second embodiment.
  • FIG. 12A is a central longitudinal sectional view showing a state immediately before the outer can is molded.
  • FIG. 12B is a central longitudinal cross-sectional view showing a state in the middle of molding of the outer can.
  • FIG. 12C is a central cross-sectional view showing the final state of the outer can molding process.
  • the gas cartridge A is an outer can 1, an inner can 2 disposed inside the outer can 1, and a gas filled in the inner can 2.
  • Cap valve member 3 is provided.
  • the outer can 1 is a cylindrical member made of aluminum having a predetermined diameter and length and a predetermined thickness. One end is opened and the other end is closed.
  • the inner can 2 is a thin-walled aluminum bottomed cylindrical member that is easily deformed, and is smaller than the outer can 1 because it is placed inside the outer can 1. Further, the inner can 2 has an outer shape similar to that of the outer can 1 in a state before the inside is filled with gas.
  • the rib 4 is formed to protrude on the outer peripheral surface of the inner can 2.
  • FIG. 4A to FIG. 4C how the inner can is deformed by gas filling will be described.
  • the liquefied fuel gas G1 is filled in the inner can 2 in an unfilled state shown in FIG. 4A.
  • FIG. 4B the inner can 2 is deformed so as to swell by the pressure at the time of filling the fuel gas G1.
  • the rib 4 of the inner can 2 hits the inner surface of the outer can 1, and the portion where the rib 4 is formed cannot be swollen by the rib 4, so that the recess 5 is formed in the inner can 2.
  • Fig. 5 shows this state in vertical section.
  • the space S between the bottoms of the outer can 1 and the inner can 2 is filled with high-pressure high-pressure gas G2.
  • the high pressure gas G2 is the table for inner can 2. The surface is pressed, the inner can 2 is crushed, and the fuel gas G1 is injected from the injection pipe 3a of the cap valve member 3 to the outside. Normally, propane gas, propylene gas, butane gas or the like is used as the high pressure gas G2.
  • the valve body 12 When using the gas cartridge with a driving tool or the like, the valve body 12 is opened by pushing the injection pipe 3a shown in Fig. 5 into the force of the spring 13 that urges the valve body 12 and pushing it. As a result, the gas inside the inner can 2 is injected to the outside. As the gas in the inner can 2 is released, the inner can 2 is crushed by the high-pressure gas G2 in the outer can 1. Therefore, since the pressure in the inner can 2 does not decrease, the fuel gas G1 is continuously injected. Thus, as the fuel gas G1 in the inner can 2 is consumed, the inner can 2 is crushed and deformed by the high pressure gas G2. At that time, as shown in FIG.
  • the deformation is naturally promoted first from the concave portion 5 formed by the rib 4, and proceeds. For this reason, the deformation force of the inner can 2 due to the pressure of the high-pressure gas G2 is evenly distributed in three places that are not unevenly distributed in the I places. Therefore, local stress concentration can be avoided, and the force S can effectively prevent the occurrence of cracks and pinholes due to folds.
  • the concave portion 5 formed in the inner can 2 is formed for the first time by the rib 4 when the fuel gas G1 that is not formed in advance is filled. Therefore, when deformation occurs during gas filling, soot is unlikely to occur, and pinholes are also difficult to form.
  • a method for forming the inner can 2 (can body) provided with the ribs 4 will be described.
  • a female die 8 having a substantially circular cross section and three grooves 7 formed at equal intervals on the inner peripheral surface is formed on the press die 6.
  • the punch 10 is an iron cylindrical member whose outer diameter is slightly smaller than the inner diameter of the female die 8.
  • Pellet 9 of aluminum material arranged at the bottom of female die 8 is punched as shown in FIG. 7A.
  • pellet 9 When pressed at 10, the pellet 9 rises along the gap between the female die 8 and the punch 10 and the groove 7 formed on the inner peripheral surface of the female die 8, as shown in FIG. 7B. As shown in Fig. 7C, when the bottom surface of punch 10 finally stops just before the bottom of female die 8, pellet 9 is formed. Is done. If the molded product 2a is taken out from the female die 8 by raising the punch 10, and the upper portion of the rib 4 is cut away, the inner can 2 in which three ribs 4 are formed as shown in FIG. 3 can be obtained.
  • the inner can 2 and the rib 4 can be integrally molded, and thus the cost can be kept low.
  • the groove 7 of the female die 8 is not limited to three, and may be two or four or more. As shown in FIG. 8, a pair of ribs 4 may be formed at one location.
  • the molding material (pellet 9) is removed from the gap 11 when pressed. However, it tends to escape to the groove 7. Accordingly, the length of the gap 11 between the female die 8 and the punch 10 in the radial direction of the female die 8 and the width of the groove 7 in the circumferential direction of the female die 8 are substantially the same. In this case, the molding material flows uniformly into the gap 11 and the groove 7, and a can having a uniform thickness as a whole is obtained. Specifically, the gap between the gaps of 11 is about 0.15 mm. ⁇ It is preferable to set the width of 7 to about 0.15-0.30mm.
  • the formation location of the ribs of the inner can 2 is not limited to the outer peripheral surface of the inner can 2 and may be formed on the inner peripheral surface of the inner can 2.
  • the portion provided with the rib 7 is not easily deformed.
  • the part between 7 and rib 7 is deformed first. Therefore, the deformation force of the inner can 2 due to the pressure of the high-pressure gas G2 is evenly distributed in three locations that are not unevenly distributed.
  • the forming method for forming the rib on the inner peripheral surface may be the same as the forming method for forming the rib on the inner peripheral surface of the outer can 1 shown below.
  • the rib 4 is formed on the outer can 1 as means for evenly dispersing the deformation of the inner can 2 due to the high pressure gas G2.
  • three ribs 4 are formed along the longitudinal direction of the outer can 1 at equal intervals in the circumferential direction of the inner peripheral surface of the outer can 1.
  • FIG. 10A is a cross-sectional view of the gas cartridge when the gas is not filled.
  • FIG. 10B when the inner can 2 is filled with the fuel gas G1, the inner can 2 expands, and the rib 4 forms a recess 5 on the outer peripheral surface of the inner can 2.
  • the inner can 2 is pushed by the high pressure gas G2. It is crushed and deformed. At that time, since the deformation is promoted from the concave portion 5 and progresses, the deformation of the inner can 2 due to the pressure of the high pressure gas G2 is evenly distributed in three places, and it is effective that cracks and pinholes are generated. Can be prevented.
  • a female die 8 having a substantially circular cross section is formed in the press die 6. After placing the aluminum pellet 9 on the bottom of the female die 8, the pellet 9 is pressed with a punch 10.
  • the punch 10 is an iron cylindrical member, and its outer diameter is slightly smaller than the inner diameter of the female die 8, and three grooves 7 are formed at equal intervals on its outer peripheral surface.
  • FIG. 12A when the aluminum pellet 9 arranged on the bottom of the female die 8 is pressed with the punch 10, the pellet 9 is punched with the female die 8 as shown in FIG. 12B. Ascending along the gap 11 between 10 and the groove 7 formed on the outer peripheral surface of the punch 10. As shown in FIG. 12C, when the bottom surface of the punch 10 finally stops just before the bottom of the female die 8, the pellet 9 is formed.
  • the outer can 1 see FIG. 9) in which three ribs 4 are formed can be obtained.
  • the number of grooves 7 in the punch 10 is not limited to three, and may be two or four or more. As shown in FIG. 8, a pair of ribs 4 may be formed at one place.
  • the width in the circumferential direction of 10 is substantially the same for the same reason as in the first embodiment.
  • the widths of the gap 11 and the groove 7 in the second embodiment are set larger than those in the first embodiment.
  • the present invention can provide a method for forming a can body provided with a rib for effectively preventing cracks and pinholes in an inner can at low cost.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Forging (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

La présente invention concerne un procédé de formation de corps de canette, doté de nervures sur sa surface externe ou interne, qui consiste à : obtenir un moule métallique à presse équipé d'une matrice en creux dotée d'une section plus ou moins circulaire ; former de multiples rainures sur la surface circonférentielle interne de la matrice en creux ou la surface circonférentielle externe d'un poinçon cylindrique ; disposer des pastilles sur le fond de la matrice en creux ; et comprimer le poinçon dans la matrice en creux de manière à exercer une pression sur les pastilles.
PCT/JP2007/067489 2006-09-08 2007-09-07 Procédé de formation d'un corps de canette doté de nervures WO2008029910A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006-244296 2006-09-08
JP2006244296A JP5301092B2 (ja) 2006-09-08 2006-09-08 ガス缶の製造方法

Publications (1)

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WO2008029910A1 true WO2008029910A1 (fr) 2008-03-13

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PCT/JP2007/067489 WO2008029910A1 (fr) 2006-09-08 2007-09-07 Procédé de formation d'un corps de canette doté de nervures

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009052995A1 (fr) * 2007-10-18 2009-04-30 Nussbaum Rielasingen Gmbh Procédé pour produire un contenant sous pression à deux chambres
WO2015012408A1 (fr) * 2013-07-23 2015-01-29 株式会社関プレス Procédé de séparation interne de coupe transversale de partie extrémité de plaque métallique ou de tige métallique, procédé de fabrication de contenant métallique ou de tuyau métallique et procédé de raccordement de composant métallique mettant en oeuvre le procédé de séparation interne
US10639694B2 (en) 2015-01-07 2020-05-05 Seki Press Co. Ltd. Method for machining outer circumference of metal end cross-section and method for joining metal component obtained by the machining method with another member
CN112916782A (zh) * 2021-02-07 2021-06-08 哈尔滨工业大学 一种带有局部突变特征的超长薄腹板高筋复杂构件的局部渐进加载精密成形模具及方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102527758B (zh) * 2012-01-20 2014-12-03 东莞汉旭五金塑胶科技有限公司 散热器铝底座的挤压成型模具及其制法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548068A (en) * 1978-09-25 1980-04-05 Rhen Beteiligung Finanz Vessel for encasing and discharging liquefied and pasteelike product
JPS63149037A (ja) * 1986-12-10 1988-06-21 Showa Alum Corp アルミニウム合金製ボンベ用底付き管の製造方法
JPH0663681A (ja) * 1992-08-12 1994-03-08 Furukawa Alum Co Ltd アルミニウム合金製継ぎ目無し小型高圧ガス容器の製造方法
JP2002292441A (ja) * 2001-03-30 2002-10-08 Musashi Seimitsu Ind Co Ltd 鍛造装置
JP2003260535A (ja) * 2002-03-06 2003-09-16 Toto Ltd 有底部品の製造方法

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JPS4736525Y1 (fr) * 1969-10-06 1972-11-06
JPS5837905B2 (ja) * 1978-02-24 1983-08-19 株式会社町山製作所 プラスチツク製品の外装体成形方法
JPS5884611A (ja) * 1981-11-13 1983-05-20 Machiyama Seisakusho:Kk 金属製容器の成形方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5548068A (en) * 1978-09-25 1980-04-05 Rhen Beteiligung Finanz Vessel for encasing and discharging liquefied and pasteelike product
JPS63149037A (ja) * 1986-12-10 1988-06-21 Showa Alum Corp アルミニウム合金製ボンベ用底付き管の製造方法
JPH0663681A (ja) * 1992-08-12 1994-03-08 Furukawa Alum Co Ltd アルミニウム合金製継ぎ目無し小型高圧ガス容器の製造方法
JP2002292441A (ja) * 2001-03-30 2002-10-08 Musashi Seimitsu Ind Co Ltd 鍛造装置
JP2003260535A (ja) * 2002-03-06 2003-09-16 Toto Ltd 有底部品の製造方法

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009052995A1 (fr) * 2007-10-18 2009-04-30 Nussbaum Rielasingen Gmbh Procédé pour produire un contenant sous pression à deux chambres
WO2015012408A1 (fr) * 2013-07-23 2015-01-29 株式会社関プレス Procédé de séparation interne de coupe transversale de partie extrémité de plaque métallique ou de tige métallique, procédé de fabrication de contenant métallique ou de tuyau métallique et procédé de raccordement de composant métallique mettant en oeuvre le procédé de séparation interne
JP2015020202A (ja) * 2013-07-23 2015-02-02 株式会社関プレス 金属板又は金属棒の端部断面の内部割裂方法、並びに該内部割裂方法による金属容器と金属管の製造方法及び金属部品の接合方法
TWI558484B (zh) * 2013-07-23 2016-11-21 關沖壓機廠股份有限公司 金屬板或金屬棒的端部剖面之內部割裂方法、利用該內部割裂方法所進行之金屬容器與金屬管的製造方法及金屬零件的接合方法
US10328593B2 (en) 2013-07-23 2019-06-25 Seki Press Co., Ltd. Internal splitting method of cross-section of end of metal plate or metal rod, manufacturing method of metal container and metal pipe by the internal splitting method and joining method of metal components
US10639694B2 (en) 2015-01-07 2020-05-05 Seki Press Co. Ltd. Method for machining outer circumference of metal end cross-section and method for joining metal component obtained by the machining method with another member
CN112916782A (zh) * 2021-02-07 2021-06-08 哈尔滨工业大学 一种带有局部突变特征的超长薄腹板高筋复杂构件的局部渐进加载精密成形模具及方法

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JP2008062279A (ja) 2008-03-21

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