WO2013035378A1 - 缶蓋の巻き締め方法 - Google Patents
缶蓋の巻き締め方法 Download PDFInfo
- Publication number
- WO2013035378A1 WO2013035378A1 PCT/JP2012/061382 JP2012061382W WO2013035378A1 WO 2013035378 A1 WO2013035378 A1 WO 2013035378A1 JP 2012061382 W JP2012061382 W JP 2012061382W WO 2013035378 A1 WO2013035378 A1 WO 2013035378A1
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- WIPO (PCT)
- Prior art keywords
- lid
- center
- flange
- inclined portion
- winding
- Prior art date
- Legal status (The legal status 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 status listed.)
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Classifications
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- 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
- B21D51/30—Folding the circumferential seam
-
- 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
- B21D51/2653—Methods or machines for closing cans by applying caps or bottoms
-
- 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
- B21D51/30—Folding the circumferential seam
- B21D51/32—Folding the circumferential seam by rolling
-
- 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
- B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
- B21D51/44—Making closures, e.g. caps
Definitions
- the present invention relates to a can lid winding method for winding a can lid around a can body, and more particularly to a can lid winding method for saving material in a pressure can lid used for a positive pressure can.
- Patent Documents 1 to 3 Conventionally, in can lids for positive pressure cans such as beer and carbonated beverages, the center panel diameter of the can lid is reduced, and the shape of the chuck wall is changed to increase the pressure resistance and reduce the thickness and reduce the material.
- Various lightweight pressure-resistant can lids have been proposed (see Patent Documents 1 to 3).
- the can lid is supplied to the can body by a can lid transport turret and is tightened.
- the chuck wall of the can lid is close to the flange top portion of the can body, as shown in FIG. Misalignment is large in the can lid transfer section to the can body, and the center position is likely to be misaligned, so the center ring or the can lid cannot be correctly attached to the can body, and the can lid is eccentric to the can body Accidents that double tightening is likely to occur in the state.
- the travel center line M of the can lid by the can lid supply turret is the travel center line L 2 of the can transport conveyor and the lifter plate.
- the travel center line N (with the knockout pad of the winding head on the same axis) intersects with the intake center p on the line connecting the center of the can lid supply turret and the center of the winding turret. Therefore, the can c, the can lid e, and the respective travel center lines are set so as to substantially overlap each other in the can lid transfer section (the range represented by the angle ⁇ in FIG. 3) to the can body, and the can lid at the intake center p. Is installed. At this time, in the can lid transfer section before the intake center p, the can lid may be supplied in an eccentric state in which the center position is shifted from the can body.
- the can lid proposed in Patent Document 1 with a small center panel surface and a large inclination angle of the chuck wall has a substantially flanged contact point between the can lid chuck wall and the can body flange as shown in FIG.
- the deviation of the center position of the can lid with respect to the can body appears remarkably. For this reason, the deviation appears, the amount of eccentricity increases, and the riding width in which the tip of the curled portion of the can lid rides on the flange of the can body increases.
- this type of lightweight pressure-resistant can lid having a small center panel diameter increases the amount of eccentricity when the deviation appears, so that the can lid does not cause a winding failure such as pseudo-winding.
- productivity is hindered, for example, it takes time for precise adjustment in the guide of the supply turret and the production speed is forced to be reduced. Therefore, the present invention improves the centering performance of the can body and the can lid, can maintain both stable winding performance without impairing productivity, and can reduce the amount of material used by using a lightweight pressure-resistant can lid
- An object is to provide a method for winding a lid.
- the centering property of the can body and the can lid can be improved by improving the shape of the can lid and making the positional relationship between the can body and the can lid a specific positional relationship.
- the present inventors have found that it is possible to perform tightening without causing poor winding tightening and without hindering productivity. That is, the can lid winding method of the present invention that solves the above-mentioned problems comprises a center panel, an annular reinforcing groove, a chuck wheel, and a curled portion, and the ratio of the center panel diameter to the can lid diameter is 0.65 to 0.
- a can lid having a small-diameter center panel, wherein the chuck wall includes a first inclined portion and a second inclined portion that are inclined outward, and a flange tip portion of the can body and the can lid A lower end of the second inclined portion at a position within an angle range of 0 ° to 35 ° with respect to the virtual horizontal plane passing through the center of curvature of the R portion of the flange when the curled tip overlaps with the virtual horizontal plane; Alternatively, a second bending portion that connects the first inclined portion and the second inclined portion is located.
- the eccentric amount of the can lid and the can body is a maximum of 0.8 mm or less.
- the outer inclined angle ⁇ 1 of the outer wall of the annular reinforcing groove with respect to the vertical axis is 0 ° to 15 °
- the inclined angle ⁇ 2 of the first inclined portion of the chuck wall is 50 ° to 70 °
- the second inclined portion It is desirable that the inclination angle ⁇ 3 is 0 ° to 20 °
- the vertical height h1 from the lower end of the second inclined portion to the top surface of the curled portion is 2.5 mm to 4.5 mm.
- the can lid winding method of the present invention even a lightweight pressure-resistant can lid having a small-diameter center panel can reduce the amount of eccentricity by reducing the deviation of the center position of the can lid with respect to the can body, Reduction of the amount of can lid material used and cost reduction while maintaining stable tightening performance without reducing the production width and enabling centering by reducing the riding width at which the curl tip rides on the flange of the can body Is possible.
- (A) is sectional drawing of the lightweight pressure
- (b) is the principal part enlarged view.
- (A) is sectional drawing of the state in which the flange front-end
- (b) is the principal part enlarged view
- It is a schematic arrangement drawing of a can lid and a can body supply device.
- It is sectional drawing which shows the state of the can lid and the can body in front of a can lid transfer area.
- FIG. 7 is a reference diagram in which the embodiment shown in FIG. 2 and the comparative example shown in FIG. 6 are overlapped, and FIG. It is a schematic diagram of the cut surface of the winding fastening part showing a pseudo winding fastening state.
- FIG. 3 shows a schematic layout of a can lid and a can body supply device, which is composed of a can lid supply turret 20, a winding turret 21, a discharge turret 22, and a constant pitch pusher conveyor which are rotationally driven synchronously.
- a supply conveyor 23 is provided.
- the can filled with the contents is conveyed by the can supply conveyor 23, and is gradually restrained by the engagement concave portion 25 of the winding turret 21 as it approaches the intake center p, and is transferred from the position of the intake center p to the winding turret 21. It will be posted.
- the can lid 50 is guided by an inner guide rail 31 and an outer guide rail 32 (see FIG. 4) arranged substantially concentrically with the turret along the inner and outer peripheral portions of the engaging recess 27 of the can lid supply turret 20.
- FIG. 4 is a cross-sectional view showing a state where the can body 70 is placed on the lifter plate 30 before the can lid transfer section and the can lid 50 is to be attached.
- An inner guide rail 31 that receives the curled tip of the can lid 50 is provided, and an outer guide rail 32 is provided on the opposite side of the winding turret 21 that passes through a recess that allows rotation of the winding turret 21.
- a conveyance path of the can lid 50 conveyed by the lid supply turret 20 is configured.
- reference numeral 33 denotes a flange guide, which is joined to the flange of the can body 70 placed on the lifter plate 30 to center the can body 70 on the lifter plate 30.
- the traveling center line M of the can lid 50 formed by the transport path extends from the intake center p to the position of the intake angle ⁇ (start point of picking up the can lid by the can body).
- the range is set so as to be substantially linear with the travel center line L 2 of the can body supply conveyor 23, thereby enhancing the centering property of the can lid 50.
- the center positions of the can lid 50 and the can body 70 are shifted in the above-described can lid transfer section.
- the chuck wall 51 may be in contact with the upper portion of the R portion 72 of the flange 71 of the can body 70 in some cases.
- the eccentric amount q2 of the can lid 50 with respect to the can body 70 becomes large, and the flange riding width s2 also becomes large.
- the flange of the can body and the curled portion of the can lid are not normally wound tightly, and the tight seam called the false seam in a state where the curl hook CH is crushed on the body hook BH. Defects are likely to occur.
- the inner guide rail 31 and the outer guide rail 32 are conventionally adjusted.
- the setting work of the guide rail is fine, and there is a problem that it is difficult to obtain the accuracy. As described above, it is necessary to adjust each time it is changed, and it causes a decrease in productivity.
- the present invention facilitates the setting work of the guide rail and enables winding with a lightweight pressure-resistant can lid.
- the present invention can be used before the intake center p where the can lid is attached.
- the displacement of the center position of the can lid with respect to the can body is reduced to reduce the amount of eccentricity, and the center ring or the can lid is correctly attached to the can body and the winding is poor. This makes it possible to perform the tightening without causing any trouble and without impairing the productivity.
- a can lid having a center panel having a small diameter with a ratio of the center panel diameter to the can lid diameter of 0.65 to 0.75, which includes a center panel, an annular reinforcing groove, a chuck wheel, and a curled portion.
- a tightening method wherein the chuck wall is composed of a first inclined portion and a second inclined portion that are inclined outward, and the flange tip portion of the can body and the curl tip portion of the can lid overlap each other in a virtual horizontal plane.
- the lower end portion of the second inclined portion or the first inclined portion and the second inclined portion are arranged at a position within an angle range of 0 ° to 35 ° with respect to a virtual horizontal plane passing through the curved center of the R portion of the flange.
- FIG. 1 is a cross-sectional view of a lightweight pressure-resistant can lid (hereinafter simply referred to as a can lid) applied to the can lid winding method according to the present invention.
- a can lid a lightweight pressure-resistant can lid
- a can lid 1 suitably applied to the present invention shown in FIG. 1 is formed of an aluminum alloy having a plate thickness of 0.20 to 0.25 mm, a can lid diameter D1 of 55 mm to 65 mm, a center panel 2 and an annular reinforcing groove 3.
- the outer wall 6 of the annular reinforcing groove 3 rises at an inclination angle ⁇ 1 of 0 ° to 15 ° with respect to the vertical axis and is inclined vertically or outwardly.
- the first inclined portion 4b is connected via a first curved portion 4a having a radius of curvature of r1.
- the chuck wall 4 is connected to the annular reinforcing groove 3 via a first inclined portion 4b that is inclined outwardly at an inclination angle ⁇ 2 of 50 ° to 70 °, and a second curved portion 4c having a radius of curvature of r2.
- the second bending portion 4c is composed of a second inclined portion 4d that rises from the upper end of the second curved portion 4c with an inclination angle ⁇ 3 of 0 ° to 20 ° and is steeply inclined vertically or outward.
- the second inclined portion 4 d is connected to the curled portion 5.
- the chuck wall 4 is generally gently inclined, but the first inclined portion 4b and the second inclined portion 4d are connected by a second curved portion 4c, and curled from the lower end of the second inclined portion 4d.
- the vertical height h1 with respect to the top surface of the portion 5 is 2.5 mm to 4.5 mm.
- the lower end of the first inclined portion 4 b of the chuck wall 4 continues to the outer wall 6 of the annular reinforcing groove 3 via the first curved portion 4 a, and the diameter D 2 of the center panel 2
- D3 represents the curl end diameter.
- FIG. 2 shows the contact state between the can lid and the can body when the center position in the can lid transfer section is shifted in the present invention
- (a) is a cross-sectional view of the main part
- (b) is a cross-sectional enlarged view of the contact side between the can lid and the can body.
- the angle ⁇ from the virtual horizontal plane passing through the curved center of the R portion 72 of the flange portion 71 of the can body 70 0 to 35
- the lower end portion of the second inclined portion 4d of the chuck wall 4 is located at a position within the range of ° as shown in FIG. 2B, or the chuck wall 4 of the can lid 1 as shown in FIG.
- a second bending portion 4c that connects the first inclined portion 4b and the second inclined portion 4d is located.
- the deviation is reduced and the amount of eccentricity is reduced.
- the center ring or the can lid 1 can be correctly attached to the can body 70.
- the angle ⁇ exceeds 35 °
- the can lid 1 comes into contact with a high position of the R portion 72 of the flange 71 of the can body 70 in the can lid transfer section, and the deviation is reduced when the above-described deviation occurs.
- the amount of eccentricity increases, and the center ring or the can lid 1 is difficult to be correctly attached to the can body 70.
- the flange 71 of the can body 70 and the curled portion 5 of the can lid 1 are not normally wound tightly, and this is called false seam (pseudo-tightening) in which the curl hook CH is crushed on the body hook BH. Winding defects are likely to occur, and the angle ⁇ is preferably 35 ° or less.
- the can lid 1 applied to the present invention has a vertical height h1 of 2.5 mm to 4.5 mm, particularly 2.7 mm to 4 mm, from the lower end of the second inclined portion 4d of the chuck wall 4 to the top surface of the curl portion. Further, it is possible to further prevent a winding failure from being 0.0 mm.
- Each dimension of the can lid was set as follows.
- Aluminum metal plate (plate thickness) 0.220mm
- Can lid diameter D1 62.2mm
- Curled part inner diameter D3 60.4mm
- Vertical height h1 3.60 mm from the upper end of the second curved portion 4c to the top of the curled portion 5
- Inclination angle ⁇ 1 14.5 ° with respect to the vertical axis of the outer wall 6 of the annular reinforcing groove 3
- Inclination angle ⁇ 2 63.7 ° of first inclined portion 4b
- Inclination angle ⁇ 3 14.5 ° of second inclined portion 4d
- Center panel diameter D2 46.15 mm
- Curled part height h2 2.25mm
- Intake angle of can lid transfer section ⁇ 3 °
- the can lid was wound around a can body having a flange width of 2.3 mm and a flange diameter of 59.5 mm.
- the positional relationship between the lower end portion of the second inclined portion of the chuck wall and the flange of the can body is the center of curvature of the R portion of the flange.
- the angle ⁇ from the passing imaginary horizontal plane was 14.5 °.
- the displacement of the center position of the can lid with respect to the can body was reduced, the eccentricity q1 was 0.64 mm, and the running width s1 of the flange of the can body to the curl tip of the can lid was 0.19 mm.
- the can lid was wound around the can body in the same manner as in Example 1. As a result, in the can lid transfer section, the positional relationship between the chuck wall of the can lid and the flange of the can body is as shown in FIG.
- the angle ⁇ from the virtual horizontal plane passing through the curved center of the R portion of the flange was 33.5 °.
- the displacement of the center position of the can lid with respect to the can body is reduced, the eccentricity q1 is 0.73 mm, and the running width s1 of the flange of the can body to the curl tip of the can lid is 0.28 mm. Met.
- the can lid when the lightweight pressure-resistant can lid is wound around the can body, the can lid can be transferred to the can body in the can lid transfer section where the can lid is supplied to the can body.
- the displacement of the center position is reduced, the amount of eccentricity is reduced, the center ring or can lid is correctly attached to the can body, and even if the displacement occurs, it can be tightened, and the lightweight pressure resistant can lid can be tightened. It was confirmed that there was a remarkable effect on it.
- the conventional can lid shown in FIG. 6 was wound around the same can body as in the above example.
- the dimensions of the can lid of the comparative example are as follows.
- Aluminum metal plate (plate thickness) 0.220mm
- Can lid diameter D1 62.2mm
- Center panel diameter D2 43.60 mm
- the positional relationship between the chuck wall of the can lid and the flange of the can body is in the state shown in FIG.
- FIG. 7 shows a cross-sectional view in which Example 1 shown in FIG. 2B and the comparative example shown in FIG. 6 are overlapped.
- the winding method of the present invention when winding a lightweight pressure-resistant can lid with a small center panel diameter around the can body, the displacement of the center position of the can lid with respect to the can body can be reduced, and the amount of eccentricity can be reduced.
- a method for winding positive pressure cans such as beer and carbonated beverages, good winding is performed without impeding productivity, and industrial applicability is high.
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- Rigid Containers With Two Or More Constituent Elements (AREA)
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Abstract
Description
そして、特許文献1の発明に係る缶蓋は、代表的な例として缶蓋径d1/パネル径d5=1/0.717と、従前の耐圧缶蓋に比べてセンターパネル径が小さく、その分チャックウォールの傾斜角cを略43゜と極端に大きくすることによって、耐圧性を高めているものである。そして、このタイプの缶蓋は、内容物が充填された缶体に巻き締めを行うときに、缶蓋が缶蓋搬送ターレットによって缶体に供給され、巻き締められる。しかしながら、缶蓋を缶体に供給する際に、缶蓋のチャックウォールが、後述する比較例として図6に示すように、ほぼ缶体のフランジ頂部に近く、後述するインテークセンターpに達するまでの缶体への缶蓋移載区間において偏心量が大きく、中心位置のズレが生じ易いためにセンターリング、或いは缶蓋の缶体への装着が正しく行われず、缶蓋が缶体に偏心したミスマッチ状態で二重巻き締めが行われるという事故が起きやすい。
尚、特許文献1で提案された従来の軽量耐圧缶蓋を巻き締める際に、偏心量が大きくなる原因の詳細については後述する。
また、特許文献2及び3に提案される缶蓋においては、前記した問題は低減されるが、未だ十分に満足できる問題の解決には至っていない。
そこで、本発明は、缶体と缶蓋のセンターリング性を向上させ、生産性を阻害することなく安定した巻き締め性の維持と、軽量耐圧缶蓋使用による材料使用量の削減を両立できる缶蓋の巻き締め方法を提供することを目的とする。
即ち、前記問題点を解決する本発明の缶蓋巻き締め方法は、センターパネル、環状強化溝、チャックォール、及びカール部から成り、センターパネル径と缶蓋径との比が0.65~0.75の小径のセンターパネルを有する缶蓋の巻き締め方法であって、前記チャックウォールが外側に傾斜する第1傾斜部と第2傾斜部を備え、缶体のフランジ先端部と前記缶蓋のカール部先端部とが仮想水平面で重なる際に、前記フランジのR部の湾曲中心を通る仮想水平面に対して角度0゜~35゜の範囲内の位置に、前記第2傾斜部の下端部、或いは前記第1傾斜部と第2傾斜部を接続する第2湾曲部が位置することを特徴とするものである。
また、前記環状強化溝の外側壁の垂直軸線に対する外側の傾斜角θ1が0°~15°、前記チャックウォールの第1傾斜部の傾斜角θ2が50°~70°、前記第2傾斜部の傾斜角θ3が0°~20°であり、前記第2傾斜部の下端からカール部頂面との垂直高さh1が2.5mm~4.5mmであることが望ましい。
2 センターパネル
3 環状強化溝
4 チャックウォール
5 カール部
6 外側壁
20 缶蓋供給ターレット
21 巻き締めターレット
22 排出ターリレット
23 缶体供給コンベア
25、27 係合凹部
30 リフター
31 インナーガイドレール
32 アウターガイドレール
33 フランジガイド
50 比較例の軽量耐圧缶蓋
70 缶体
71 フランジ
72 R部
図3は、缶蓋、缶体の供給装置の概略配置図を示し、同期して回転駆動される缶蓋供給ターレット20、巻き締めターレット21、排出ターレット22、定ピッチのプッシャーコンベヤからなる缶体供給コンベヤ23を有している。内容物が充填された缶体は缶体供給コンベヤ23によって搬送され、インテークセンターpに近づくにつれて次第に巻き締めターレット21の係合凹部25に拘束されてインテークセンターpの位置から巻き締めターレット21に移載される。
一方、缶蓋50は缶蓋供給ターレット20の係合凹部27の内外周部に沿って該ターレットとほぼ同心円状に配置されたインナーガイドレール31とアウターガイドレール32(図4参照)に案内されて缶蓋供給ターレット20に設けられているプッシャーによって押されて搬送され、缶体70への缶蓋移載区間部の終端部で下方を通過する缶体70が上昇し、インテークセンターpにおいて、前記各ガイドレールから缶蓋50が持ち上げられて缶体開口部に装着される。それとほぼ同時に、巻き締めターレット21の各係合凹部25の上方に配置している巻き締めヘッドのノックアウトパッド(図示せず)が下降して、缶体70と缶蓋50が前記インテークセンターpを通過する時点で、缶体70に缶蓋50が装着された状態で巻き締めターレット21に移載され、巻き締めが行われる。
そして、この偏心量を減少するため、従来インナーガイドレール31及びアウターガイドレール32の調節を行なっているが、ガイドレールの設定作業は細かく、精度を出し難い問題があり、且つ缶蓋の種類が変更になる都度調整が必要となり、また、生産性の低下を招く原因となっているのは前述の通りである。
即ち、本発明では、センターパネル、環状強化溝、チャックォール、及びカール部から成り、センターパネル径と缶蓋径との比が0.65~0.75の小径のセンターパネルを有する缶蓋の巻き締め方法であって、前記チャックウォールが外側に傾斜する第1傾斜部と第2傾斜部から成り、缶体のフランジ先端部と前記缶蓋のカール部先端部とが仮想水平面で重なる際に、前記フランジのR部の湾曲中心を通る仮想水平面に対して角度0゜~35゜の範囲内の位置に、前記第2傾斜部の下端部、或いは前記第1傾斜部と第2傾斜部を接続する第2湾曲部を位置させることによって、前記缶蓋移載区間において、缶蓋と缶体の中心位置のズレが生じた場合であっても、前記中心位置のズレを低減して偏心量を減少させることを可能にしたものである。
図1は、本発明に係る缶蓋の巻き締め方法に適用される軽量耐圧缶蓋(以下、単に缶蓋という)の断面図である。
そして、缶体70をリフタープレート30に載置して缶蓋1を缶体70に装着するインテークセンターp前の缶蓋移載区間において、缶体70のフランジ71先端部と缶蓋1のカール部5先端部とが仮想水平面で重なる際(インテークαの略3°の位置)に、缶体70のフランジ部71におけるR部72の湾曲中心を通る仮想水平面からの角度β=0゜~35゜の範囲内の位置に、図2(b)に示すようにチャックウォール4の第2傾斜部4dの下端部が位置する、或いは図2(c)に示すように缶蓋1のチャックウォール4の第1傾斜部4bと第2傾斜部4dを接続する第2湾曲部4cが位置する。そして、このような位置とすることにより、缶蓋移載区間において、缶蓋1と缶体70の中心位置のズレが生じた場合であっても、前記ズレを低減して偏心量を減少させ、センターリング或いは缶蓋1の缶体70への装着が正しく行われることを可能にした。
そして、前記角度βが35゜を超えると、缶蓋移載区間において、缶蓋1が缶体70のフランジ71におけるR部72の高い位置で接し、前記したズレが生じた際にズレが低減されずに偏心量が大きくなり、センターリング或いは缶蓋1が缶体70に正しく装着され難い。このため、缶体70のフランジ71と缶蓋1のカール部5が正常に巻き締められず、ボディフックBHの上にカールフックCHが押し潰された状態のフォールスシーム(擬似巻き締め)と呼ばれる巻き締め不良が発生し易く、角度βは35゜以下が望ましい。
アルミニウム金属板(板厚)=0.220mm
缶蓋径D1=62.2mm
カール部内径D3=60.4mm
第2湾曲部4c上端からカール部5頂点までの垂直高さh1=3.60mm
環状強化溝3の外側壁6の垂直軸線に対する傾斜角θ1=14.5°
第1傾斜部4bの傾斜角度θ2=63.7°
第2傾斜部4dの傾斜角度θ3=14.5゜
センターパネル径D2=46.15mm
カール部高さh2=2.25mm
缶蓋移載区間のインテーク角度α=3°
前記缶蓋をフランジ幅2.3mm、フランジ径59.5mmの缶体に巻き締めを行なった。
その結果、缶蓋移載区間において、缶体のフランジ先端部と缶蓋のカール部先端部とが前記フランジ先端部が位置する仮想水平面と重なるタイミングでの缶蓋のチャックウォールと缶体のフランジとの位置関係は図2(a)、(b)に示す状態であり、前記チャックウォールの第2傾斜部の下端部と缶体のフランジとの位置関係は、フランジのR部の湾曲中心を通る仮想水平面からの角度βが14.5゜であった。そして、缶蓋の缶体に対する中心位置のズレが低減され、偏心量q1は0.64mm、缶蓋のカール先端部への缶体のフランジの乗り上げ幅s1は0.19mmであった。
第2湾曲部4c上端からカール部5頂点までの垂直高さh1=2.70mm
環状強化溝3の外側壁6の垂直軸線に対する傾斜角θ1=11.3°
第1傾斜部4bの傾斜角度θ2=52.7°
第2傾斜部4dの傾斜角度θ3=11.0゜
前記缶蓋を実施例1と同様に缶体に巻き締めを行なった。
その結果、缶蓋移載区間において、缶蓋のチャックウォールと缶体のフランジとの位置関係は図2(c)に示す状態であり、前記チャックウォールの第1傾斜部と第2傾斜部を接続する第2湾曲部と缶体のフランジとの位置関係は、フランジのR部の湾曲中心を通る仮想水平面からの角度βが33.5゜であった。そして、実施例1と同様、缶蓋の缶体に対する中心位置のズレが低減され、偏心量q1は0.73mm、缶蓋のカール先端部への缶体のフランジの乗り上げ幅s1は0.28mmであった。
比較例の缶蓋の寸法は、次のとおりである。
アルミニウム金属板(板厚)=0.220mm
缶蓋径D1=62.2mm
カール部内径D3=60.4mm
チャックウォール上端からカール部頂面との高さh1=2.05mm
チャックウォールの傾斜角度θ2=51.7゜
センターパネル径D2=43.60mm
カール部高さh2=2.25mm
缶蓋移載区間のインテーク角度α=3°
その結果、缶蓋移載区間において、缶蓋のチャックウォールと缶体のフランジとの位置関係は図6に示す状態で、前記チャックウォールが缶体のフランジのR部の湾曲中心を通る仮想水平面からの角度βが51.7゜であった。そして、缶蓋の缶体に対する中心位置のズレが大きく、偏心量q2は1.24mm、缶蓋のカール先端部への缶体のフランジの乗り上げ幅s2は0.79mmであった。
これは、缶蓋を缶体に巻き締める際に、缶蓋の缶体への供給が行われる缶蓋移載区間において、缶蓋の缶体に対する中心位置のズレが低減できず、偏心量を減少させることが困難で、センターリング或いは缶蓋の缶体への装着が正しく行われず、前記ズレが生じた際に擬似巻き締めなどの巻き締め不良を起こす恐れが有ることを意味している。
なお、図7に、図2(b)に示す実施例1と、図6に示す比較例を重ね合わせた断面図を示した。
Claims (3)
- センターパネル、環状強化溝、チャックォール、及びカール部から成り、センターパネル径と缶蓋径との比が0.65~0.75の小径のセンターパネルを有する缶蓋の巻き締め方法であって、前記チャックウォールが外側に傾斜する第1傾斜部と第2傾斜部を備え、缶体のフランジ先端部と前記缶蓋のカール部先端部とが仮想水平面で重なる際に、前記フランジのR部の湾曲中心を通る仮想水平面に対して角度0゜~35゜の範囲内の位置に、前記第2傾斜部の下端部、或いは前記第1傾斜部と第2傾斜部を接続する第2湾曲部が位置することを特徴とする缶蓋の巻き締め方法。
- 前記缶蓋と缶体の偏心量が最大0.8mm以下であることを特徴とする請求項1に記載の缶蓋の巻き締め方法。
- 前記環状強化溝の外側壁の垂直軸線に対する外側の傾斜角θ1が0°~15°、前記チャックウォールの第1傾斜部の傾斜角θ2が50°~70°、前記第2傾斜部の傾斜角θ3が0°~20°であり、前記第2傾斜部の下端からカール部頂面との垂直高さh1が2.5mm~4.5mmであることを特徴とする請求項1または2に記載の缶蓋の巻き締め方法。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP12829977.3A EP2754510B1 (en) | 2011-09-08 | 2012-04-27 | Method for seaming can cover |
| US14/343,746 US9073113B2 (en) | 2011-09-08 | 2012-04-27 | Method for seaming can cover |
| JP2012539531A JP5136813B1 (ja) | 2011-09-08 | 2012-04-27 | 缶蓋の巻き締め方法 |
| PL12829977T PL2754510T3 (pl) | 2011-09-08 | 2012-04-27 | Sposób łączenia na zakładkę pokrywki puszki |
| CN201280043318.7A CN103781568B (zh) | 2011-09-08 | 2012-04-27 | 罐盖的卷边接合方法 |
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| EP (1) | EP2754510B1 (ja) |
| CN (1) | CN103781568B (ja) |
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| USD1033216S1 (en) | 2012-08-10 | 2024-07-02 | Daniel A. Zabaleta | Container cap having frustum shaped sidewall segment enabling nesting |
| USD1033215S1 (en) | 2012-08-10 | 2024-07-02 | Daniel A. Zabaleta | Container lid comprising frustum shaped sidewall and seaming chuck receiving radius |
| US10968010B1 (en) | 2012-08-10 | 2021-04-06 | Daniel A Zabaleta | Resealable container lid and accessories including methods of manufacture and use |
| US12365511B1 (en) | 2012-08-10 | 2025-07-22 | Daniel A Zabaleta | Sealing cap having tamper evidence ring for sealing resealable container and method of use |
| JP6679492B2 (ja) | 2014-02-07 | 2020-04-15 | ボール コーポレイションBall Corporation | ねじ付閉止部を有する金属容器 |
| EP3419775A1 (de) * | 2016-02-23 | 2019-01-02 | Ferrum AG | Verschliessmodul für einen behälter |
| CN106672390B (zh) * | 2017-03-07 | 2018-07-13 | 苏州斯莱克精密设备股份有限公司 | 耐压基本盖、易拉盖以及带易拉盖的易拉罐 |
| AU2019374778B2 (en) | 2018-11-05 | 2022-09-15 | Ball Corporation | Metallic container with a threaded closure |
| EP3990201A4 (en) * | 2019-06-26 | 2023-07-26 | Ball Corporation | METHOD AND APPARATUS FOR CLOSING A METAL CONTAINER WITH A METAL END CLOSURE |
| US12384594B2 (en) | 2021-04-05 | 2025-08-12 | Daniel A. Zabaleta | Threaded container components having frustum shaped surfaces enabling nesting |
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| JPH01245930A (ja) * | 1988-03-28 | 1989-10-02 | Mitsubishi Heavy Ind Ltd | 缶蓋供給装置 |
| JPH08229625A (ja) * | 1995-02-27 | 1996-09-10 | Toyo Shokuhin Kikai Kk | 缶と蓋の搬送装置 |
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| JP2010215274A (ja) | 2009-03-17 | 2010-09-30 | Universal Seikan Kk | 缶蓋 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU603024B2 (en) | 1987-12-29 | 1990-11-01 | Mitsubishi Jukogyo Kabushiki Kaisha | Can lid feeder |
| US6499622B1 (en) * | 1999-12-08 | 2002-12-31 | Metal Container Corporation, Inc. | Can lid closure and method of joining a can lid closure to a can body |
| US6736283B1 (en) * | 2002-11-19 | 2004-05-18 | Alcoa Inc. | Can end, tooling for manufacture of the can end and seaming chuck adapted to affix a converted can end to a can body |
| EP2165940A4 (en) * | 2007-05-30 | 2011-01-12 | Toyo Seikan Kaisha Ltd | CAN BEVERAGE COVER HAVING EXCELLENT PRESSURE RESISTANCE |
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2012
- 2012-04-27 WO PCT/JP2012/061382 patent/WO2013035378A1/ja not_active Ceased
- 2012-04-27 CN CN201280043318.7A patent/CN103781568B/zh active Active
- 2012-04-27 PL PL12829977T patent/PL2754510T3/pl unknown
- 2012-04-27 EP EP12829977.3A patent/EP2754510B1/en not_active Not-in-force
- 2012-04-27 US US14/343,746 patent/US9073113B2/en active Active
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|---|---|---|---|---|
| JPH01245930A (ja) * | 1988-03-28 | 1989-10-02 | Mitsubishi Heavy Ind Ltd | 缶蓋供給装置 |
| JPH08229625A (ja) * | 1995-02-27 | 1996-09-10 | Toyo Shokuhin Kikai Kk | 缶と蓋の搬送装置 |
| JPH11505791A (ja) | 1995-05-24 | 1999-05-25 | カーノードメタルボックス ナームローゼ フェンノートシャップ | 缶端および缶端を缶体へ固定する方法 |
| JP2006122990A (ja) | 2004-10-29 | 2006-05-18 | Mitsubishi Materials Corp | 缶蓋 |
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| US20140219748A1 (en) | 2014-08-07 |
| EP2754510B1 (en) | 2015-09-16 |
| CN103781568B (zh) | 2015-11-25 |
| PL2754510T3 (pl) | 2016-02-29 |
| CN103781568A (zh) | 2014-05-07 |
| EP2754510A1 (en) | 2014-07-16 |
| EP2754510A4 (en) | 2014-10-29 |
| US9073113B2 (en) | 2015-07-07 |
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