EP0760784B1 - Gestufter falz für eine blechdose - Google Patents
Gestufter falz für eine blechdose Download PDFInfo
- Publication number
- EP0760784B1 EP0760784B1 EP95936439A EP95936439A EP0760784B1 EP 0760784 B1 EP0760784 B1 EP 0760784B1 EP 95936439 A EP95936439 A EP 95936439A EP 95936439 A EP95936439 A EP 95936439A EP 0760784 B1 EP0760784 B1 EP 0760784B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- seam
- region
- fold
- hook
- configuration according
- 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.)
- Expired - Lifetime
Links
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 title claims abstract description 8
- 239000002184 metal Substances 0.000 claims abstract description 13
- 150000001875 compounds Chemical class 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000007789 sealing Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229940125773 compound 10 Drugs 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Images
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
- B65D7/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal
- B65D7/12—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls
- B65D7/34—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls
- B65D7/36—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of metal characterised by wall construction or by connections between walls with permanent connections between walls formed by rolling, or by rolling and 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
- B21D51/30—Folding the circumferential seam
- B21D51/32—Folding the circumferential seam by rolling
Definitions
- the technical field of the invention is the formation of a Fold on a can closed by a lid, such as beverage or Tin can made of tin.
- a fold has the task Lid and can also withstand relatively high forces from outside, for example by pressure or impact, and inside, for Example can be effective through overpressure or underpressure hold together and the interior of the can also compared to the To hermetically seal the outside atmosphere.
- the hermetic seal is also improved.
- the - is in the finished Fold - the area of the lid hook located below and outside with the above the free end of the fuselage hook Surface area in a fixed, preferably form-fitting system, while the upper area of the Cover hook noticeably radially towards the lower area is shifted outside, that is, from the adjacent sheet metal section the fuselage hook is spaced (claim 6).
- the firm, preferably positive pressure of the Sheet metal areas thus only extend over the lower one Folding area (claim 6).
- This area is essentially cylindrical (claim 7). It decouples the fold width b from the Length tolerance of the fuselage hook.
- the fold geometry can be seen on a cut through the fold seam check and determine a sealed can at any time.
- the invention enables to work with sheet thicknesses below the usual dimensions can.
- the surface pressure of the sheet metal areas in the lower half to the lower third of the seam go so far that in the area of the lower edge of the fuselage hook mechanical locking occurs.
- the fold overall is much more stable, both when using conventional Sheets as well as those that, on the other hand, are in their Thickness are reduced.
- the flat pressure in the lower fold area (claim 6, Claim 7) can be flanged on the free edge Fuselage hook lead to a level that is in Take over axis holding and locking function can.
- the sealing or forming roll with which this fold contour achieved or created has two groove areas that face each other the roller axis have different diameters (claim 11, Claim 12).
- the two groove areas are mutually axial moved so as to form the transition area.
- the transition area (or more generally: the annular projection) opens into an approximately cylindrical shape (claim 13) to the lower area when forming the fold (claim 6, claim 7) to give such a shape.
- the employed state runs the approximately cylindrical portion of the folding lock roller VR1 parallel to the outer surface of the Capping head VK.
- the geometry of the sealing head VK and (indicated) also the geometry of the sealing rollers VR and VR1 as a counter-contour to the respective outer contour of the fold are shown.
- the outer contour of the (inner) closing head VK can be used unchanged to achieve the geometry of the fold according to the invention, so that all inner sheet metal layers 2, 1, 2 a, 1 a with the exception of the upper region 2b of the outer layer 2b, 2c of the lid hook, lie flat against one another and are essentially cylindrical or slightly conical to the axis of the container.
- Figure 1 shows a double fold according to an example of the invention.
- the can wall is denoted by 1, the lid with its core wall by 2.
- the step 23 of the profile 30, 31 of the indicated fold-closing roller VR1 neutralizes the influence of the fuselage hook length tolerance ⁇ R H on the fold width b. Furthermore, the lid hook is better clamped and mechanically locked in its lower region 2c by displaced lid material at 2d. This ensures the tightness of the fold, even with changing can internal pressure.
- the sharper shaped lower section 2c of the fold becomes lead to an increase in folding stability in the form that especially with thinner cover and fuselage sheets, rolling up the finished fold is complicated by the inner pressure of the can and so that the use of thinner sheets is possible than is common today.
- the lid hook is also insufficiently clamped in FIG. 2 , which can lead to leaks in the filled can, particularly in the case of thinner sheets.
- FIG. 1 the closed fold of a tin can is shown (upper, edge-side cutout in cross section), in the contouring according to the example of the invention.
- the lid hook 2a engages in the body hook 1a. Both lie tightly against each other in the overlap area.
- a sealing compound 10 is provided in the remaining area.
- the fold - the fold geometry - receives a gradation 23 to the lower area 2c.
- the step 23 stabilizes the fold. Is that radially inward directed flare pressure high enough, the end region 21 the fuselage hook 1a an additional lock 2d, the stronger seals, but at the same time also holding and compensating function takes over.
- the difference dimension d shown in FIG. 2 (as a function of the body hook length R H ) is replaced in FIG. 1 by a flat pressing of a lower region 2c of the outer cover ring section 2b, 2c on the lower edge region 21 of the body hook 1a.
- the height of the surface pressure should be equal to or greater than the expected length tolerance ⁇ R H , in the example it is about 1.5 times as large. In the example, the fold height is approximately three times larger than the flat contact area 2c with a height of 1.5 ⁇ ⁇ R H.
- the step 23 mentioned in the area 2c can be selected gently to more abruptly.
- the closing device contains the pressure roller VR1 that with its groove contour 30, 31 the step 23 to the (cylindrical) lower Folding section 2c causes.
- the step 23 can be introduced immediately when folding (forming the fold); it can also be done in a separate step after Flaring the fold inserted on the outer contour of the fold become.
- the corresponding procedure (one-stage or two-stage) is in the capping machine with the VR1 and VK capping head realized.
- Existing folding machines can be converted easily.
- the plane of the fold is the plane that runs perpendicular to the axis of the box and lies approximately in the middle of the fold height that runs in the axis of the box. On average, it is illustrated in FIG. 2 on line b of the fold width.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Containers With Two Or More Constituent Elements (AREA)
- Crushing And Grinding (AREA)
- Ceramic Products (AREA)
- Fertilizers (AREA)
- Control And Other Processes For Unpacking Of Materials (AREA)
- Tires In General (AREA)
- Closures For Containers (AREA)
Description
- Figur 1
- zeigt im Schnitt einen Doppelfalz gemäß dem Beispiel der Erfindung.
- Figur 2
- ist eine Falzgeometrie nach dem Stand der Technik.
Claims (13)
- Falzgeometrie an einer mit einem Doppelfalz verschlossenen Dose, wie Getränke- oder Konservendose, bei der auf der Falzaußenseite (2c,2b) eine stetige oder stufige Konturierung (23) vorgesehen ist und der umgeformte Deckelhaken (2a,2b,2c) mit dem freien Ende des nach unten umgeformten Rumpfhakens (1a) außenseitig (21) deutlich flächig (formschlüssig) verbunden ist, dadurch gekennzeichnet, daß eine Dichtungsstelle (20) am radial äußeren, axial oberen Ende des Falzes durch einen Compound (10) und nicht durch Blechberührung gebildet ist, welche Blechberührung im unteren Bereich (2c) des Falzes flächig erfolgt.
- Falzgeometrie nach Anspruch 1, bei der eine sanfte Stufenform als Kontur (23) vorgesehen ist.
- Falzgeometrie nach Anspruch 1 oder 2, bei der der obere Bereich (2b) des Doppelfalzes spürbar nach radial außen absteht, gegenüber dem unteren Bereich (2c) des Falzes.
- Falzgeometrie nach einem der vorstehenden Ansprüche, bei der der Falz gegenüber der Falzmittelebene merklich, insbes. um etwa ½ bis 1x die Blechdicke unsymmetrisch ist.
- Falzgeometrie nach einem der vorstehenden Ansprüche, bei der an der Dichtungsstelle (20) oberhalb der Falzmittelebene deutlich mehr Compound (10) vorgesehen ist als unterhalb dieser Ebene.
- Falzgeometrie nach einem der erwähnten Ansprüche, wobei der Falz in seinem unteren Bereich (2c) deutlich schmäler als in dem darüberliegenden Bereich (2b) ist und die äußere Lage (2b,2c) des umgeformten Deckelhakens nur im unteren Bereich (2c) an dem Endbereich (21) des Rumpfhakens (1a) fest und flächig anliegt, insbesondere etwa zylindrische Gestalt bezüglich der Dosenachse hat.
- Falzgeometrie nach einem der erwähnten Ansprüche, dadurch gekennzeichnet, daß der Rumpf (1), der innenliegende Abschnitt (2a) sowie der unterhalb der Konturierung (23) liegende Bereich (2c) der äußeren Lage (2b,2c) des Deckelhakens (2a,2b,2c) und der Rumpfhaken (1a) im unteren Bereich des Falzes flächig aneinanderliegen und im wesentlichen zylindrisch zur Dosenachse verlaufen.
- Falzgeometrie nach einem der Ansprüche 1 bis 7, bei der die Blechstärke ≤0,23 mm - insbesondere 0,22 mm - ist.
- Verfahren zum Verformen, Bilden oder Konturieren der Falzgeometrie eines Doppelfalzverschlusses nach einem der erwähnten Ansprüche, bei dem im unteren Endbereich (2c,2d) der gebildete oder schon bestehende Falz von außen stärker oder schärfer so ausgeformt (23) wird, daß er im unteren, äußeren Bereich (2c,21) durch Blechberührung stärker dichtet als im oberen gekrümmten Bereich (2b,20).
- Verfahren nach Anspruch 9, bei dem mit dem schärferen Ausformen der Falz unsymmetrisch zu seiner Mittelebene wird.
- Falz-Verschließrolle für eine Falzmaschine zum Anbringen eines Doppelfalzverschlusses an Blechdosen (1) und Deckeln (2) nach einem der erwähnten Vorrichtungsansprüche, welche Rolle (VR1) umlaufend eine Nut (30,31) aufweist, die mit einem nach radial innen weisenden, ringförmigen Vorsprung (30) versehen ist, wobei der ringförmige Vorsprung eine etwa zylindrische Form hat.
- Falz-Verschließrolle nach Anspruch 11, dadurch gekennzeichnet, daß sie an ihrer umformwirksamen Innenfläche über einen stetigen oder gestuften Übergangsbereich (23) unterteilt ist in einen ersten nutenförmigen Bereich von kleinerem Durchmesser und einen zweiten Bereich von demgegenüber deutlich größeren Durchmesser, gemessen von der Rollenachse zum Vorsprung bzw. Nutgrund.
- Falz-Verschließrolle nach Anspruch 11 oder Anspruch 12, bei der der ringförmige Vorsprung (30) etwa parallel zur Rollenachse oder Mantelfläche des Verschließkopfes (VK) verläuft.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19944440628 DE4440628A1 (de) | 1994-11-14 | 1994-11-14 | Gestufter Falz |
DE4440628 | 1994-11-14 | ||
DE9501566 | 1995-11-13 | ||
WOPCT/DE95/01566 | 1995-11-13 | ||
PCT/DE1995/001574 WO1996015036A1 (de) | 1994-11-14 | 1995-11-14 | Gestufter falz für eine blechdose |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0760784A1 EP0760784A1 (de) | 1997-03-12 |
EP0760784B1 true EP0760784B1 (de) | 1999-04-28 |
Family
ID=25941970
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95936439A Expired - Lifetime EP0760784B1 (de) | 1994-11-14 | 1995-11-14 | Gestufter falz für eine blechdose |
Country Status (13)
Country | Link |
---|---|
US (1) | US5947673A (de) |
EP (1) | EP0760784B1 (de) |
JP (1) | JPH10509649A (de) |
KR (1) | KR970707018A (de) |
CN (1) | CN1067644C (de) |
AT (1) | ATE179379T1 (de) |
AU (1) | AU3839495A (de) |
CA (1) | CA2205222A1 (de) |
DE (1) | DE59505783D1 (de) |
ES (1) | ES2133822T3 (de) |
GR (1) | GR3030808T3 (de) |
HK (1) | HK1005091A1 (de) |
WO (1) | WO1996015036A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4446393C1 (de) * | 1994-12-23 | 1995-12-21 | Schmalbach Lubeca | Compound-Dip-Verfahren für Metalldosen |
ES2214104B1 (es) * | 2002-07-03 | 2005-12-16 | Bsh Electrodomesticos España, S.A. | Tambor de lavadora. |
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 |
CN112404887A (zh) * | 2020-09-23 | 2021-02-26 | 河南天义包装容器有限公司 | 一种高强度耐磨金属油桶的生产方法 |
CN115401129B (zh) * | 2022-11-01 | 2023-02-07 | 江苏九洲包装科技有限公司 | 一种用于薄壁马口铁的环形卷封装置及方法 |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3448E (fr) * | 1904-11-17 | Benjamin Adriance | Boites en tole | |
AT11925B (de) * | 1902-02-24 | 1903-05-25 | Benjamin Adriance | |
GB190315570A (en) * | 1903-07-14 | 1903-08-20 | Benjamin Adriance | Improvements in Sheet Metal Boxes and the like. |
US2327424A (en) * | 1941-06-19 | 1943-08-24 | Continental Can Co | Method of seaming cover ends to can bodies |
FR1533260A (fr) * | 1967-05-10 | 1968-07-19 | Carnaud & Forges | Perfectionnements aux sertis des boîtes métalliques, notamment pour conserves alimentaires |
US3688464A (en) * | 1970-02-25 | 1972-09-05 | Continental Can Co | Method of and apparatus for closing container |
DE2134034C3 (de) * | 1971-07-08 | 1980-04-17 | Rheinpfaelzische Blechemballagenfabrik G. Schoenung & Co Kg, 6730 Neustadt | Falzausbildung zwischen einem Metallbehälter und Ober- bzw. Unterboden |
BE793875A (fr) * | 1973-01-11 | 1973-07-11 | Travail Mecanique De La Tole S | Perfectionnements aux emballages tels que futs metalliques ou composites a fonds assembles par sertissage |
DE2352929C3 (de) * | 1973-10-22 | 1981-09-03 | Sulo Eisenwerk Streuber & Lohmann Gmbh & Co Kg, 4900 Herford | Mehrfachfalzverbindung |
US4037550A (en) * | 1974-06-27 | 1977-07-26 | American Can Company | Double seamed container and method |
FR2430276A1 (fr) * | 1978-07-07 | 1980-02-01 | Gallay Sa | Perfectionnements aux emballages metalliques ou composites avec fonds assembles par sertissage et aux outillages permettant leur realisation |
DE2924842A1 (de) * | 1979-06-20 | 1981-01-15 | Rissen Gmbh Maschf | Papierbehaelter, der aus einem mantelteil und einem bodenteil zusammengesetzt ist |
ZA807387B (en) * | 1979-12-08 | 1981-11-25 | Metal Box Co Ltd | Containers |
JPS57183947A (en) * | 1981-04-30 | 1982-11-12 | Nittetsu Drum Kk | Vessel made of metal, its manufacture and its device |
DD158518B1 (de) * | 1981-05-14 | 1986-04-23 | Thale Eisen Huettenwerk | Falz mit mehrfacher Blechumschlingung für rotationssymmetrische Hohlkörper |
GB2098523B (en) * | 1981-05-14 | 1984-08-22 | Wellman Furnaces Ltd | Securing end covers to rotationally symmetric bodies |
US4626158A (en) * | 1983-07-05 | 1986-12-02 | Gallay S.A. | Container seam and a process for forming a container seam |
GB8412244D0 (en) * | 1984-05-14 | 1984-06-20 | Metal Box Plc | Containers |
JPH02241631A (ja) * | 1989-03-13 | 1990-09-26 | Dainippon Printing Co Ltd | 金属蓋付容器および容器巻締装置 |
DE4007381A1 (de) * | 1990-03-08 | 1991-09-12 | Schmalbach Lubeca | Durch doppelfalznaht verschliessbare zwei- oder dreiteilige dose aus blech und verfahren zu ihrer herstellung |
-
1995
- 1995-11-14 WO PCT/DE1995/001574 patent/WO1996015036A1/de not_active Application Discontinuation
- 1995-11-14 ES ES95936439T patent/ES2133822T3/es not_active Expired - Lifetime
- 1995-11-14 DE DE59505783T patent/DE59505783D1/de not_active Expired - Lifetime
- 1995-11-14 CN CN95196203A patent/CN1067644C/zh not_active Expired - Fee Related
- 1995-11-14 JP JP8515639A patent/JPH10509649A/ja active Pending
- 1995-11-14 KR KR1019970703162A patent/KR970707018A/ko not_active Application Discontinuation
- 1995-11-14 AT AT95936439T patent/ATE179379T1/de not_active IP Right Cessation
- 1995-11-14 AU AU38394/95A patent/AU3839495A/en not_active Abandoned
- 1995-11-14 US US08/836,373 patent/US5947673A/en not_active Expired - Lifetime
- 1995-11-14 EP EP95936439A patent/EP0760784B1/de not_active Expired - Lifetime
- 1995-11-14 CA CA002205222A patent/CA2205222A1/en not_active Abandoned
-
1998
- 1998-05-19 HK HK98104328A patent/HK1005091A1/xx not_active IP Right Cessation
-
1999
- 1999-07-20 GR GR990401896T patent/GR3030808T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
DE59505783D1 (de) | 1999-06-02 |
HK1005091A1 (en) | 1998-12-24 |
AU3839495A (en) | 1996-06-06 |
CA2205222A1 (en) | 1996-05-23 |
CN1067644C (zh) | 2001-06-27 |
CN1165504A (zh) | 1997-11-19 |
EP0760784A1 (de) | 1997-03-12 |
ES2133822T3 (es) | 1999-09-16 |
KR970707018A (ko) | 1997-12-01 |
US5947673A (en) | 1999-09-07 |
ATE179379T1 (de) | 1999-05-15 |
WO1996015036A1 (de) | 1996-05-23 |
GR3030808T3 (en) | 1999-11-30 |
JPH10509649A (ja) | 1998-09-22 |
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