WO2008029910A1 - Method of forming can body with rib - Google Patents
Method of forming can body with rib Download PDFInfo
- 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
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- WO
- WIPO (PCT)
- Prior art keywords
- female die
- punch
- forming
- gas
- pellet
- Prior art date
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Classifications
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- 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
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- 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.
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- 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
A method of forming a can body furnished on its outer or inner surface with ribs, comprising providing a press metal mold with a female die with approximately circular section, forming multiple grooves on the inner circumferential surface of the female die or the outer circumferential surface of a cylindrical punch, disposing pellets on the bottom of the female die, and pressing the punch within the female die so as to apply pressure on the pellets.
Description
明 細 書 Specification
リブを備えた缶体の成形方法 Method for forming can body with rib
技術分野 Technical field
[0001] 本発明は、内缶又は外缶にリブを備えた缶体の成形方法に関する。 [0001] The present invention relates to a method for forming a can body in which an inner can or an outer can has ribs.
背景技術 Background art
[0002] 外部容器である外缶と、外缶の内側に配置され、液化ガスを充填した内部容器とし ての内缶とを備えたガスカートリッジが知られている。このような多重構造を有するガ スカートリッジにおいて、内缶と外缶の間の内部空間には、圧縮された高圧ガスが充 填されている。内缶内に充填されたガスは、内部空間内に充填された高圧ガスの圧 力を利用して内缶を圧縮変形させることにより、放出(噴射)される。 There is known 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. In the gas cartridge having such a multiple structure, 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.
[0003] 外缶と内缶はアルミニウム製であることが好ましい。とりわけ、内缶は、高圧ガスの圧 力を受けて変形しやすぐまた内部のガスが外部に透過しにくいことから薄肉のアル ミニゥム製であることが好ましい (例えば、特許第 2873691号公報に開示される二室 構造加圧充填装置を参照)。 [0003] The outer can and the inner can are preferably made of aluminum. In particular, 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).
[0004] ところで、上述のガスカートリッジでは、内缶と外両缶の間の内部空間に充填された 高圧ガスの圧力により内缶を圧縮させて凹み変形させることにより、内缶内のガスが 放出される。ところ力 ガスの圧力を利用した内缶の変形は自由変形であって、均等 には変形しない。多くの場合、内缶の変形初期において剛性の弱い部分が圧縮され て凹み変形し、この部分の変形がさらに助長されるので、 1個所のみが大きく凹み変 形する。 [0004] By the way, in the gas cartridge described above, 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. However, the deformation of the inner can using the pressure of force gas is a free deformation and does not deform equally. In many cases, in the initial stage of deformation of the inner can, 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.
[0005] 具体的には、内缶の開口部と底部は剛性が高く変形し難いので、中央部の一部に おいて応力集中が起きる。応力集中により初めに変形した内缶中央部の一部は、さ らに大きく変形する。結果として、この部分には、皺や折れ目が生じ、亀裂やピンホー ルが発生する。内缶に亀裂やピンホールが発生すると、内缶と外両缶の間の内部空 間に充填された高圧ガスが内缶内に流入し、内缶内のガスの放出(噴射)時に高圧 ガスも放出(噴射)されてしまう。この場合、内缶と外缶の圧力差が低下し、内缶内の ガスが十分に外部に放出されないことになり、内缶内のガスが残留したままガスカー
トリッジとしての機能を失う。 [0005] Specifically, since the opening and bottom of the inner can are highly rigid and difficult to deform, stress concentration occurs in a part of the central portion. The part of the inner can center that was initially deformed due to stress concentration is further greatly deformed. As a result, wrinkles and creases occur in this part, and cracks and pinholes occur. When a crack or pinhole occurs in the inner can, the high-pressure gas filled in the inner space between the inner and outer cans flows into the inner can, and when the gas in the inner can is released (injected), the high-pressure gas Will also be released (injected). In this case, the pressure difference between the inner can and the outer can decreases, and the gas in the inner can is not sufficiently released to the outside, so that the gas car remains with the gas in the inner can remaining. Loss of function as a bridge.
[0006] そこで、外缶と内缶との間に変形誘導部を設け、内缶が均等に変形するようにする ことが考えられて!/、る。内缶の変形を誘導する方法としては次のようなものが考えられ ている。 [0006] Therefore, it is conceivable to provide a deformation guiding portion between the outer can and the inner can so that the inner can is uniformly deformed! /. The following methods are considered as methods for inducing deformation of the inner can.
(1)内缶と外缶の間に別体のフレーム状部材を配置し、ガス充填時にフレーム状部 材が配置された部分のみを変形させる。 (1) 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.
(2)外缶を等間隔に潰し、潰した部分によって内缶を変形させる。 (2) The outer can is crushed at equal intervals, and the inner can is deformed by the crushed portion.
(3)内缶を予め変形させておく。 (3) The inner can is deformed in advance.
[0007] しかしながら、方法(1)では、コストが増加する。方法(2)では、外缶の表面の一部 を潰すという加工工程が必要となる。方法(3)では、ガス充填時に内缶に皺がよりや すいので、内缶にピンホールが発生しやすい。このように、いずれの方法も問題を有 している。 [0007] However, in the method (1), the cost increases. Method (2) requires a processing step of crushing part of the outer can surface. In method (3), the inner can is easier to wrinkle when filling the gas, so pinholes are likely to occur in the inner can. Thus, both methods have problems.
[0008] そこで、内缶又は外缶にリブを形成し、内缶内にガスを充填するとき、あるいは内缶 内の液化ガスが消費されて減るときに、リブによって内缶を変形させる方法が考えら れている。 [0008] Therefore, there is a method in which a rib is formed on the inner can or the outer can and the inner can is deformed by the rib when the inner can is filled with gas or when the liquefied gas in the inner can is consumed and reduced. It is considered.
[0009] 例えば、外缶の内面にリブが形成されているときは、内缶内に液化ガスが充填され て内缶が膨らむとき、外缶のリブに当接する部分は変形せずに、他の部分が変形す る。このように、自らは変形しにくいリブが、リブに当接しない部分の変形を促す。すな わち、内缶を予め変形させるわけではないので、ガス充填時の皺発生によるピンホー ルができにくい。内缶の外面又は内面にリブを形成した場合も、同様に他の部分の 変形を促すことになるから、内缶を予め変形させておく必要がない。したがって、外缶 の内面にリブを形成した場合と同じ効果が得られる。 [0009] For example, when a rib is formed on the inner surface of the outer can, when the inner can is filled with liquefied gas and the inner can swells, the portion that contacts the rib of the outer can is not deformed. The part of is deformed. In this way, the rib that is not easily deformed promotes deformation of the portion that does not contact the rib. In other words, since the inner can is not deformed in advance, it is difficult to make a pinhole due to the generation of flaws during gas filling. Even when ribs are formed on the outer surface or inner surface of the inner can, deformation of other portions is similarly promoted, so that it is not necessary to deform the inner can in advance. Therefore, the same effect can be obtained as when ribs are formed on the inner surface of the outer can.
発明の開示 Disclosure of the invention
[0010] 本発明の一以上の実施例は、内缶における亀裂やピンホールの発生を有効に防 止するためのリブを備えた缶体を低コストで成形する方法を提供する。 [0010] 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.
[0011] 本発明の一以上の実施例によれば、外面にリブを備えた缶体の成形方法は、断面 が略円形で、内周面に複数条の溝を有する雌型をプレス金型に形成し、前記雌型の 底にペレットを配置し、前記雌型の内径よりも小さい外径を有する円柱状のパンチを
前記雌型内で前記ペレットに対してプレスする、工程を備える。 [0011] According to one or more embodiments of the present invention, 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.
[0012] 本発明の一以上の実施例によれば、内面にリブを備えた缶体の成形方法は、断面 が略円形の雌型をプレス金型に形成し、前記雌型の内径よりも小さい外径を有する 円柱状のパンチの外周面に複数条の溝を形成し、前記雌型の底にペレットを配置し 、前記パンチを前記雌型内で前記ペレットに対してプレスする、工程を備える。 図面の簡単な説明 [0012] According to one or more embodiments of the present invention, 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
[0013] [図 1]図 1は、本発明の一実施例に係るガスカートリッジの斜視図である。 FIG. 1 is a perspective view of a gas cartridge according to an embodiment of the present invention.
[図 2A]図 2Aはガスカートリッジのガス充填前の縦断面図である。 FIG. 2A is a longitudinal sectional view of the gas cartridge before gas filling.
[図 2B]図 2B、は図 2Aの X— X泉上の断面図である。 [FIG. 2B] FIG. 2B is a cross-sectional view of the XX spring in FIG. 2A.
[図 3]本発明の第 1実施例に係るガスカートリッジの分解斜視図である。 FIG. 3 is an exploded perspective view of the gas cartridge according to the first embodiment of the present invention.
[図 4A]図 4Aは、ガス未充填時のガスカートリッジの横断面図である。 FIG. 4A is a cross-sectional view of the gas cartridge when gas is not filled.
[図 4B]図 4Bは、燃料ガス充填後のガスカートリッジの横断面図である。 FIG. 4B is a cross-sectional view of the gas cartridge after fuel gas filling.
[図 4C]図 4Cは、内缶内の燃料ガスが消費されている途中のガスカートリッジの横断 面図である。 [FIG. 4C] FIG. 4C is a cross-sectional view of the gas cartridge while the fuel gas in the inner can is being consumed.
[図 5]図 5は、ガス充填後のガスカートリッジの縦断面図である。 FIG. 5 is a longitudinal sectional view of a gas cartridge after gas filling.
[図 6]図 6は、第 1実施例に係る内缶の成形方法を示す斜視図である。 FIG. 6 is a perspective view showing the inner can molding method according to the first embodiment.
[図 7A]図 7Aは、内缶の成形直前の状態を示す中央縦断面図である。 FIG. 7A is a central longitudinal sectional view showing a state immediately before the inner can is molded.
[図 7B]図 7Bは、内缶の成形途中の状態を示す中央縦断面図である。 [FIG. 7B] FIG. 7B is a central longitudinal sectional view showing a state in the middle of molding the inner can.
[図 7C]図 7Cは、内缶の成形工程の最終状態を示す中央横断面図である。 FIG. 7C is a central cross-sectional view showing the final state of the inner can molding process.
[図 8]図 8は、本発明の他の実施例に係る内缶の横断面図である。 FIG. 8 is a cross-sectional view of an inner can according to another embodiment of the present invention.
[図 9]図 9は、本発明の第 2実施例に係るガスカートリッジの分解斜視図である。 FIG. 9 is an exploded perspective view of a gas cartridge according to a second embodiment of the present invention.
[図 10A]図 10Aは、ガスを充填する前のガスカートリッジの横断面図である。 FIG. 10A is a cross-sectional view of the gas cartridge before filling with gas.
[図 10B]図 10Bは、ガスを充填した後のガスカートリッジの横断面図である。 FIG. 10B is a cross-sectional view of the gas cartridge after filling with gas.
[図 11]図 11は、第 2実施例に係る外缶の成形方法を示す斜視図である。 FIG. 11 is a perspective view showing a method for forming an outer can according to a second embodiment.
[図 12A]図 12Aは、外缶の成形直前の状態を示す中央縦断面図である。 [FIG. 12A] FIG. 12A is a central longitudinal sectional view showing a state immediately before the outer can is molded.
[図 12B]図 12Bは、外缶の成形途中の状態を示す中央縦断面図である。 FIG. 12B is a central longitudinal cross-sectional view showing a state in the middle of molding of the outer can.
[図 12C]図 12Cは、外缶の成形工程の最終状態を示す中央横断面図である。 FIG. 12C is a central cross-sectional view showing the final state of the outer can molding process.
符号の説明
[0014] 1 外缶 Explanation of symbols [0014] 1 outer can
2 内缶 2 Inner can
4 リブ 4 ribs
7 溝 7 groove
8 雌型 8 female
9 ペレツ卜 9 Perez coffee
10 パンチ 10 punches
発明を実施するための最良の形態 BEST MODE FOR CARRYING OUT THE INVENTION
[0015] 以下、本発明の実施例について、図面を参照して詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0016] 図 1〜図 3に示されるように、ガスカートリッジ Aは、外缶 1と、外缶 1の内部に配置さ れた内缶 2と、内缶 2内に充填されたガスを噴射するためのキャップバルブ部材 3を 備えている。 As shown in FIG. 1 to FIG. 3, 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.
[0017] 図 2A、図 2Bは、燃料ガス G1や高圧ガス G2を充填する前のガスカートリッジ Aの縦 断面図である。外缶 1は所定の径と長さで所定肉厚のアルミニウム製の円筒部材で あり、一端が開口されて他端が閉鎖されている。内缶 2は、変形し易い薄肉のアルミ ニゥム製の有底円筒部材であり、外缶 1の内部に配置されることから、外缶 1よりも小 さい。また、内缶 2は、内部にガスが充填される前の状態において、外缶 1に類似す る外形を有する。 2A and 2B are longitudinal sectional views of the gas cartridge A before being filled with the fuel gas G1 and the high-pressure gas G2. 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.
実施例 1 Example 1
[0018] 本発明の第 1実施例によれば、図 3に示されるように、内缶 2の外周面にはリブ 4が 突出形成されている。 According to the first embodiment of the present invention, as shown in FIG. 3, the rib 4 is formed to protrude on the outer peripheral surface of the inner can 2.
[0019] 図 4Aから図 4Cを参照して、ガス充填によって内缶が変形していく様子を説明する 。はじめに、図 4Aに示されるガス未充填の状態の内缶 2内に液化した燃料ガス G1が 充填される。図 4Bに示されるように、燃料ガス G1充填時の圧力によって内缶 2は膨 らむように変形する。このとき、内缶 2のリブ 4が外缶 1の内面に当たり、リブ 4が形成さ れた部分はリブ 4が邪魔をして膨らむことができないため、内缶 2に凹部 5が形成され る。図 5はこの状態を縦断面で示したものである。さらに、外缶 1と内缶 2の底部間の 空間 Sには、高圧の高圧ガス G2が充填されていく。なお、高圧ガス G2は内缶 2の表
面を押圧し、内缶 2を押し潰して燃料ガス G1をキャップバルブ部材 3の噴射パイプ 3a から外部に噴射させる。通常、高圧ガス G2としては、プロパンガス、プロピレンガス、 ブタンガス等が用いられる。 [0019] With reference to FIG. 4A to FIG. 4C, how the inner can is deformed by gas filling will be described. First, the liquefied fuel gas G1 is filled in the inner can 2 in an unfilled state shown in FIG. 4A. As shown in FIG. 4B, the inner can 2 is deformed so as to swell by the pressure at the time of filling the fuel gas G1. At this time, 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. Furthermore, 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.
[0020] ガスカートリッジを打ち込み工具等で使用する際には、図 5に示される噴射パイプ 3 aをバルブ体 12を付勢するバネ 13の力に杭して押し込むことでバルブ体 12が開放さ れ、これにより内缶 2内部のガスが外部に噴射される。内缶 2内のガスが放出されるに 伴い、内缶 2は、外缶 1内の高圧ガス G2により押し潰されていく。したがって、内缶 2 内の圧力は減らないから、燃料ガス G1は連続して噴射される。このように、内缶 2内 の燃料ガス G1が消費されるにつれて、内缶 2は高圧ガス G2によって押し潰されて変 形する。その際、図 4Cに示されるように、リブ 4によって形成された凹部 5から先に自 然に変形が促され、進行していく。このため、高圧ガス G2の押圧による内缶 2の変形 力 I個所に偏在することがなぐ 3個所に均等に分散される。したがって、局部的な応 力集中が回避され、皴ゃ折れ目による亀裂やピンホールが発生するのを有効に防止 すること力 Sでさる。 [0020] 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. 4C, 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.
[0021] 内缶 2に形成される凹部 5は、予め形成されているものではなぐ燃料ガス G1が充 填されるときにリブ 4によって初めて形成される。したがって、ガス充填時の変形のとき は皺が発生しにくいため、ピンホールもできにくい。 [0021] 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.
[0022] また、内缶 2を均等変形させるために別体のフレーム状部材ゃ特別の加工工程を 必要としな!/、ので、コストも低く抑えること力 Sできる。 [0022] Further, since a separate frame-like member does not require a special processing step in order to uniformly deform the inner can 2, it is possible to reduce the cost.
[0023] 次に、リブ 4を備えた内缶 2 (缶体)を成形する方法について説明する。図 6に示され るように、プレス金型 6に断面が略円形で、内周面に等間隔に 3個の溝 7を形成した 雌型 8を形成する。雌型 8の底にアルミニウム材のペレット 9を配置した後、ペレット 9 をパンチ 10でプレスする。パンチ 10は鉄製の円柱状部材で、その外径は雌型 8の内 径よりもやや小さい。 Next, a method for forming the inner can 2 (can body) provided with the ribs 4 will be described. As shown in FIG. 6, 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. 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 whose outer diameter is slightly smaller than the inner diameter of the female die 8.
[0024] 雌型 8の底に配置されたアルミニウム材のペレット 9を図 7Aに示されるようにパンチ [0024] Pellet 9 of aluminum material arranged at the bottom of female die 8 is punched as shown in FIG. 7A.
10でプレスすると、図 7Bに示されるように、ペレット 9は、雌型 8とパンチ 10間の隙間 および雌型 8の内周面に形成された溝 7に沿って上がっていく。図 7Cに示されるよう に、最終的にパンチ 10の下面が雌型 8の底部の直前で停止すると、ペレット 9が成形
される。パンチ 10を上げて雌型 8から成形物 2aを取り出し、リブ 4の上部を切除すれ ば、図 3に示されるような 3条のリブ 4が形成された内缶 2を得ることができる。 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.
[0025] このように、内缶 2とリブ 4とは一体に成形できるので、コストも低く抑えることができる [0025] As described above, the inner can 2 and the rib 4 can be integrally molded, and thus the cost can be kept low.
[0026] なお、雌型 8の溝 7は 3個に限定されず、 2個でも 4個以上でもよい。図 8に示される ように、一箇所に 1対のリブ 4を形成してもよい。 [0026] 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.
[0027] また、溝 7の雌型 8の周方向における幅が隙間 11の雌型 8の径方向における長さの 2倍を越えると、プレスしたときに成形材料 (ペレット 9)が隙間 11よりも溝 7の方に逃げ てしまいやすい。したがって、雌型 8とパンチ 10間の隙間 11の雌型 8の径方向にお ける長さと溝 7の雌型 8の周方向における幅とは略同じとする。この場合、隙間 11と溝 7に均一に成形材料が流れ込み、全体として均一な肉厚の缶体が得られる。具体的 には、隙:間 11の間鬲を 0. 15mm前後とし、?冓 7の幅を 0. 15-0. 30mm程度に設 定するのが好ましい。 [0027] When the width of the groove 7 in the circumferential direction of the female die 8 exceeds twice the length of the female die 8 in the radial direction of the gap 11, 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.幅 It is preferable to set the width of 7 to about 0.15-0.30mm.
[0028] なお、内缶 2のリブの形成箇所は、内缶 2の外周面に限定されず、内缶 2の内周面 に形成してもよい。この場合、内缶 2内のガスが放出されるに伴い、外缶 1内の高圧 ガス G2により内缶 2が押し潰されるときに、リブ 7が設けられた部分は変形しにくいの で、リブ 7とリブ 7の間の部分から先に変形していく。したがって、高圧ガス G2の押圧 による内缶 2の変形力 個所に偏在することがなぐ 3個所に均等に分散される。内周 面にリブを形成するための成形方法については、次に示す外缶 1の内周面にリブを 形成するための成形方法と同じでよい。 It should be noted that 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. In this case, when the inner can 2 is crushed by the high pressure gas G2 in the outer can 1 as the gas in the inner can 2 is released, 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.
実施例 2 Example 2
[0029] 本発明の第 2実施例によれば、高圧ガス G2による内缶 2の変形を均等に分散させ る手段として、リブ 4が外缶 1に形成されている。具体的には、図 9に示されるように、 外缶 1の内周面の周方向に等間隔に 3個のリブ 4が外缶 1の長手方向に沿って形成 されている。図 10Aは、ガスが未充填のときのガスカートリッジの横断面図である。図 10Bに示されるように、内缶 2に燃料ガス G1が充填されると、内缶 2は膨らみ、リブ 4 によって内缶 2の外周面には凹部 5が形成される。 [0029] According to the second embodiment of the present invention, 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. Specifically, as shown in FIG. 9, 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. As shown in 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.
[0030] この場合も、内缶 2内のガスが消費されるにつれて内缶 2は高圧ガス G2によって押
し潰されて変形する。その際、凹部 5から先に変形が促され、進行していくため、高圧 ガス G2の押圧による内缶 2の変形が 3個所に均等に分散され、亀裂やピンホールが 発生するのを有効に防止することができる。 [0030] Again, as the gas in the inner can 2 is consumed, 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.
[0031] 次に、リブ 4を備えた外缶 1 (缶体)を成形する方法について説明する。図 11に示さ れるように、プレス金型 6に断面が略円形の雌型 8を形成する。雌型 8の底にアルミ二 ゥム材のペレット 9を配置した後、ペレット 9をパンチ 10でプレスする。パンチ 10は鉄 製の円柱状部材で、その外径は雌型 8の内径よりもやや小さぐその外周面に等間 隔に 3個の溝 7が形成されて!/、る。 Next, a method for forming the outer can 1 (can body) provided with the ribs 4 will be described. As shown in FIG. 11, 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.
[0032] 図 12Aに示されるように、雌型 8の底に配置されたアルミニウム材のペレット 9をパン チ 10でプレスすると、図 12Bに示されるように、ペレット 9は、雌型 8とパンチ 10間の 隙間 11およびパンチ 10の外周面に形成された溝 7に沿って上がっていく。図 12Cに 示されるように、最終的にパンチ 10の下面が雌型 8の底部の直前で停止すると、ペレ ット 9が成形される。パンチ 10を上げて雌型 8から成形物 laを取り出して必要な処理 を施すことにより、 3条のリブ 4が形成された外缶 1 (図 9参照)を得ることができる。 [0032] As shown in 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. By lifting the punch 10 and taking out the molded product la from the female die 8 and performing the necessary treatment, the outer can 1 (see FIG. 9) in which three ribs 4 are formed can be obtained.
[0033] なお、パンチ 10の溝 7は 3個に限定されず、 2個でも 4個以上でもよい。図 8に示さ れるように、一箇所に 1対のリブ 4を形成してもよい。 [0033] 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.
[0034] このように、外缶 1とリブ 4とは一体に成形できるので、コストも低く抑えることができる [0034] As described above, since the outer can 1 and the rib 4 can be formed integrally, the cost can be kept low.
[0035] また、雌型 8とパンチ 10間の隙間 11の雌型 8の径方向における長さと溝 7のパンチ [0035] 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 punch of the groove 7
10の周方向における幅についても、実施例 1と同じ理由から略同じとする。ただし、 実施例 2における隙間 11と溝 7の幅は、実施例 1の場合よりも大きく設定される。 The width in the circumferential direction of 10 is substantially the same for the same reason as in the first embodiment. However, the widths of the gap 11 and the groove 7 in the second embodiment are set larger than those in the first embodiment.
[0036] これらの実施例によれば、外缶 1と内缶 2との間に特別の変形誘導部を設ける必要 がないので、外径が大きくなつたり、外観が損なわれたりするおそれがない。 [0036] According to these embodiments, there is no need to provide a special deformation guiding portion between the outer can 1 and the inner can 2, so there is no possibility that the outer diameter becomes large or the appearance is damaged. .
[0037] 本発明を詳細にまた特定の実施態様を参照して説明したが、本発明の精神と範囲 を逸脱することなく様々な変更や修正を加えることができることは当業者にとって明ら 力、である。 [0037] Although the invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. It is.
[0038] 本出願は、 2006年 9月 8日出願の日本特許出願番号 2006— 244296に基づくも のであり、その内容はここに参照として取り込まれる。
産業上の利用可能性 [0038] This application is based on Japanese Patent Application No. 2006-244296 filed on Sep. 8, 2006, the contents of which are incorporated herein by reference. Industrial applicability
本発明は、内缶における亀裂やピンホールの発生を有効に防止するためのリブを 備えた缶体を低コストで成形する方法を提供することができる。
INDUSTRIAL APPLICABILITY 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.
Claims
[1] 断面が略円形で、内周面に複数条の溝を有する雌型をプレス金型に形成し、 前記雌型の底にペレットを配置し、 [1] A female die having a substantially circular cross section and having a plurality of grooves on the inner peripheral surface is formed in a press die, and a pellet is disposed on the bottom of the female die,
前記雌型の内径よりも小さい外径を有する円柱状のパンチを前記雌型内で前記ぺ レットに対してプレスする、 A cylindrical punch having an outer diameter smaller than the inner diameter of the female mold is pressed against the pellet in the female mold;
外面にリブを備えた缶体の成形方法。 A method for forming a can having a rib on the outer surface.
[2] 前記溝の前記雌型の周方向における幅は、前記雌型とパンチとの間の隙間の径方 向の長さの 2倍以下である、請求項 1に記載の缶体の成形方法。 [2] The can body molding according to claim 1, wherein a width of the groove in the circumferential direction of the female die is not more than twice a radial length of the gap between the female die and the punch. Method.
[3] 前記溝の前記雌型の周方向における幅は、前記雌型とパンチとの間の隙間の径方 向の長さと略同じである、請求項 2に記載の缶体の成形方法。 [3] The method for forming a can body according to claim 2, wherein the width of the groove in the circumferential direction of the female die is substantially the same as the length in the radial direction of the gap between the female die and the punch.
[4] 前記ペレットは、アルミニウム材である、請求項 1に記載の缶体の成形方法。 4. The method for forming a can body according to claim 1, wherein the pellet is an aluminum material.
[5] 前記溝は、前記雌型の内周面の 3箇所に形成される、請求項 1に記載の缶体の成 形方法。 [5] The method for forming a can body according to claim 1, wherein the groove is formed at three locations on the inner peripheral surface of the female die.
[6] 断面が略円形の雌型をプレス金型に形成し、 [6] A female die having a substantially circular cross section is formed on the press die,
前記雌型の内径よりも小さい外径を有する円柱状のパンチの外周面に複数条の溝 を形成し、 Forming a plurality of grooves on the outer peripheral surface of a cylindrical punch having an outer diameter smaller than the inner diameter of the female die;
前記雌型の底にペレットを配置し、 Placing the pellet on the bottom of the female mold,
前記パンチを前記雌型内で前記ペレットに対してプレスする、 Pressing the punch against the pellet in the female mold;
内面にリブを備えた缶体の成形方法。 A method for forming a can having ribs on the inner surface.
[7] 前記溝のパンチの周方向における幅は、前記雌型とパンチとの間の隙間の径方向 の長さの 2倍以下である、請求項 6に記載の缶体の成形方法。 7. The method for forming a can body according to claim 6, wherein the width of the groove in the circumferential direction of the punch is not more than twice the radial length of the gap between the female die and the punch.
[8] 前記溝のパンチの周方向における幅は、前記雌型とパンチとの間の隙間の径方向 の長さと略同じである、請求項 7に記載の缶体の成形方法。 8. The can body forming method according to claim 7, wherein a width of the groove in the circumferential direction of the punch is substantially the same as a length in a radial direction of a gap between the female die and the punch.
[9] 前記ペレットは、アルミニウム材である、請求項 6に記載の缶体の成形方法。 9. The method for forming a can body according to claim 6, wherein the pellet is an aluminum material.
[10] 前記溝は、前記パンチの外周面の 3箇所に形成される、請求項 6に記載の缶体の 成形方法。
10. The method for forming a can body according to claim 6, wherein the groove is formed at three locations on the outer peripheral surface of the punch.
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JP2006244296A JP5301092B2 (en) | 2006-09-08 | 2006-09-08 | Gas can manufacturing method |
JP2006-244296 | 2006-09-08 |
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Cited By (4)
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WO2009052995A1 (en) * | 2007-10-18 | 2009-04-30 | Nussbaum Rielasingen Gmbh | Method of producing a two-chamber pressure vessel |
WO2015012408A1 (en) * | 2013-07-23 | 2015-01-29 | 株式会社関プレス | Method for internally splitting end-part cross-section of metal plate or metal rod, method for manufacturing metal container or metal pipe, and method for joining metal component using internal splitting method |
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CN112916782A (en) * | 2021-02-07 | 2021-06-08 | 哈尔滨工业大学 | Local progressive loading precision forming die and method for ultra-long thin web high-rib complex component with local abrupt change characteristics |
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CN102527758B (en) * | 2012-01-20 | 2014-12-03 | 东莞汉旭五金塑胶科技有限公司 | Extrusion moulding die for aluminum base of radiator and manufacture method thereof |
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WO2009052995A1 (en) * | 2007-10-18 | 2009-04-30 | Nussbaum Rielasingen Gmbh | Method of producing a two-chamber pressure vessel |
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CN112916782A (en) * | 2021-02-07 | 2021-06-08 | 哈尔滨工业大学 | Local progressive loading precision forming die and method for ultra-long thin web high-rib complex component with local abrupt change characteristics |
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JP2008062279A (en) | 2008-03-21 |
JP5301092B2 (en) | 2013-09-25 |
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