US3736893A - Seam connection and method for manufacturing the seam - Google Patents

Seam connection and method for manufacturing the seam Download PDF

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Publication number
US3736893A
US3736893A US00058619A US3736893DA US3736893A US 3736893 A US3736893 A US 3736893A US 00058619 A US00058619 A US 00058619A US 3736893D A US3736893D A US 3736893DA US 3736893 A US3736893 A US 3736893A
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US
United States
Prior art keywords
flange
seam
sheet
seam connection
edge
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
Application number
US00058619A
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English (en)
Inventor
M Coppens
H Steen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Greif International Holding BV
Original Assignee
Koninklijke Emballage Industrie Van Leer BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication of US3736893A publication Critical patent/US3736893A/en
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Expired - Lifetime legal-status Critical Current

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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
    • B65D7/38—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 soldering, welding, or otherwise uniting opposed surfaces
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them

Definitions

  • PATENTEDJUH 5191s 3.736.893 SHEET u or a Fig-5a 7 g 5b F: g E 7 15; 50
  • the present invention relates to a method of forming a seam connecting the edges of at least two sheets of 5 metal in which the edge of one of the sheets is bent about 360 or more and to the product so formed.
  • the state of the art respecting such method and product is to be found in British Pat. No. 1,153,872 and in published Dutch patent application 64,06427.
  • Seams are produced according to the known method by rolling the sheet edges which have to be connected in a profiled seaming roller which gives the edge of the sheet which has to form the outer layer of the seam a protruding portion with respect to the other sheet edge, the outer edge of said protruding portion being bent somewhat in the direction of seaming before the real seaming operation is started.
  • a sealing compound is applied during the manufacturing of the seam.
  • the sheet edges grip around each other, but there is still however a large clearance between them.
  • the rolled sheet edges are rolled flat in such a way that a seam is obtained in which the sheet edges grip around each other by means of sharp folds.
  • a simple double seam as generally known at least one of the sheet edges is folded twice over 180.
  • the seam according to FIG. 6 of the above-mentioned British specification at least one of the sheet edges is folded three times over 180. The greater the number of folds the more difficult it is to arrange the sheet edges within the seam at the proper place with respect to each other. Said edges should overlap each other as much as possible. In practice it is difficult to locate said edges at the proper place with respect to each other since there always are differences in qualities of material and thickness of the sheets which affect the length of the sheets to be seamed.
  • Said known method requires that after assembling the preshaped parts three different seaming rollers have to engage the sheet edges to manufacture the closed seam. This is true as well when instead of a triple seam the more usual double seam is made.
  • the seam obtained whether double or triple has the disadvantage that the cylindrical portion of the seam results into different moments of inertia with respect to the different axis of bending since the substantially rectangular cross section is longer in axial direction than in radial direction in the case of a seam of a drum. When during transportation deformation occurs torsion is the result with the before mentioned opening of the seam.
  • said other edge is cored in said bent hollow edge namely in the sealing compound or means present in it but cannot, however, shift with respect to said edge so that the sealing material, although being compressed and ensuring the sealing, cannot be shifted or scraped away.
  • the sheet edges are rolled into a proper spiral shaped winding which is substantially closed up to its heart.
  • the earlier mentioned tolerances are of no importance any more since the quantity of material to be folded is equal to the quantity in the closely rolled finished seam.
  • said seam has a proper spiral shape its height and width are almost equal to each other.
  • the present invention has a larger moment of inertia of the seam as compared with the known seam starting from the same quantity of material and accordingly this invention has a larger strength in that direction where it is desired most.
  • Seams according to the present invention have virtually equal bending resistance in all directions, are leak resistant and yet may be made with fewer steps and less material than prior art processes.
  • the sealing means are brought in the final condition before the seaming operation is done. This means that in case a liquid is applied said liquid first has to be dried to obtain a closed, well adhering film. It is also possible to apply a loose ring of synthetic resin or rubber which fits into the hollow space. According to the invention the use of polyurethane sprayed into the hollow space and allowed to set is preferred.
  • FIG. 1 shows a prior art seam in cross section after the seaming operation and before the flattening operation.
  • FIG. 2 is a cross section through the seam of FIG. 1 in its finished flattened form.
  • FIG. 3 is a cross section through a seam according to the invention.
  • FIG. 4 shows a different embodiment of the seam according to the invention.
  • FIG. 5a to d inclusive show schematically the manufacturing of a triple seam according to the method known from British specification No. 1,153,872.
  • FIG. 6 shows the form of the cover according to the invention.
  • FIG. 7 shows the same cover after bending the edge over FIG. 8 shows diagrammatically the situation of the portions to be connected before the seaming operation starts.
  • FIG. 1 clearly shows how after the known rolling operation the bent sheet edges engage each other with large clearance.
  • a flattening operation by means of rolls has to take place.
  • the seam is then higher than it is thick.
  • FIG. 3 one embodiment of the seam according to the invention has been shown in the form of an uninterrupted spiral shaped winding.
  • FIG. 4 shows another embodiment of the seam according to the invention differing from the one according to FIG. 3 in that the sheet edges are rolled over a smaller angle.
  • the outer plate 1 has been rolled over more than 540 and the inner sheet over more than 360 in the embodiment of FIG. 4 the outer sheet 1a has been folded over a little bit more than 450 and the inner sheet 2a over a little bit more than 270.
  • FIG. 3 and FIG. 4 respectively show a cover 1 and la respectively and a side wall 2 and 2a respectively of a drum and said two parts are connected with each other by means of the seam 3 having the form of a closed spiral shaped winding. Since the example shown shows a circular seam the sheet edges during the seaming operation have to be deformed towards a smaller diameter which causes an increase of the metal sheet thickness. This happens with each seam and accordingly also with the seam according to the invention. This thickness increase, however, promotes the filling of the seam center whereas it has no particular advantage for flattened seams.
  • FIG. 5a to d inclusive relate to the manufacturing of the prior art seam by the prior art process.
  • FIG. 5a shows a cover 5 with flange 6 and protruding portion 7 as well as a drum body 9 with flange 10.
  • FIG. 5b shows how by means of a first rolling operation with the roller 1 1 the protruding portion 7 is folded back upon the flange 10.
  • FIG. 5c shows how by means of a further roller 12 the seaming operation is performed during which the flange 6 is turned three times so that in cross section seven layers are formed which seam, however, is not closed.
  • FIG. 5d shows how by means of the roller 13 the open seam of FIG. 50 is closed by flattening to produce an almost rectangular seam as viewed in cross section.
  • the final form obtained is similar to the one shown in FIG. 2.
  • cover shape as shown in FIG. 6, which form in principle does not deviate from the form as shown in FIG. 5a.
  • Said cover is stamped out of a flat sheet and has an outer edge 13 at the flange 14 which is already somewhat bent inwardly. In said area it is possible already to apply sealing material such as polyurethane indicated at 15.
  • the next operation shown in FIG. 7 is that the edge 13 provided with the sealing material 15 or not is curved by means of the roller 16 into a hollow edge with a very small radius. If the sealing material has not been applied before said operation it has to be applied now and if necessary brought into its final condition e.g. by drying hardening, vulcanization, glueing of a rubber ring or the like.
  • FIG. 8 shows that the edge of the drum has been provided with a flange 19 the transfer area between flange edge and drum body having a large radius of curvature 20.
  • the outer diameter of the flange 19 is smaller than the inner diameter of the curved edge portion 13 filled with sealing means.
  • roller 21 By means of the roller 21 the further seaming operation takes place. This is done from the position shown in FIG. 8 by means of one single roller 21 forming the sheet edges into a complete closed spiral which flanges independence of their width will be rolled into each other over two times l80 to e.g. three times 180 the center or heart being formed by the circular cross section of the hollow edge 13 made with the aid of the roller 16.
  • the radius of the groove in the roller 21 is defined by the sheet thickness and the number of windings to be made. If the spiral winding is 2.5 times 180 the outer side of the seam in principle is circular. If the winding is continued to e.g. three time 180 then the upper half of the seam may have a little different circular form than the lower half. The result of the last possibility has been shown in FIG. 3.
  • FIG. 4 shows a seam with a spiral shape of 2.5 times and an outer shape which, in principle, is circular.
  • a cylindrical sheet metal container of large volume including circumferential beads comprising a cylindrical container body having a first flange-like sheet edge; a circular cover having a second flange-like sheet edge; a seam connection between the first and second sheet edges, said seam connection including said first and second sheet edges wherein said first sheet edge is bent about an angle of more than 270 and said second sheet edge is bent about an angle of more than 360, as seen from the beginning of curvature of the respective first and second edges, and wherein said first and second sheet edges are in a spiral shaped winding of gradually changing radii and are in metal-to-metal contact throughout the entire cross-section of said seam connection; and a sealing compound exclusively in the center of said seam connection, said sealing compound completely filling said center and being under pressure.
  • a method of manufacturing a triple seam connection for a container between a cylindrical body of said container and a round cover comprising the steps of:

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
US00058619A 1969-08-01 1970-07-27 Seam connection and method for manufacturing the seam Expired - Lifetime US3736893A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6911769A NL6911769A (de) 1969-08-01 1969-08-01

Publications (1)

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US (1) US3736893A (de)
NL (1) NL6911769A (de)
SU (1) SU403142A3 (de)
ZA (1) ZA704977B (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3922984A (en) * 1972-07-05 1975-12-02 Koninklije Emballage Ind Van L Method for reconditioning a container
US4055133A (en) * 1975-07-31 1977-10-25 Gallay S.A. Method and apparatus for triple roll seaming end closures to container bodies
US4113133A (en) * 1972-06-05 1978-09-12 Cebal Rolled edge in cans
US4263860A (en) * 1979-06-18 1981-04-28 Greif Bros. Corporation Seal drum with end closure having reinforced seams
US4392295A (en) * 1980-10-27 1983-07-12 Nittetsu Steel Drum Co., Ltd. Method and apparatus for forming drum seam
US4543025A (en) * 1982-02-26 1985-09-24 Nittetsu Steel Drum Co., Ltd. Metal containers - their manufacturing methods
US4556354A (en) * 1983-04-09 1985-12-03 Toyo Seikan Kaisha, Ltd. Process for production of bonded can of key-opening type
AU621325B2 (en) * 1987-11-20 1992-03-12 Koninklijke Emballage Industrie Van Leer B.V. Drum with sealed folded seam
US6191393B1 (en) * 1999-01-16 2001-02-20 Jong Do Peter Park Cooking utensil and manufacturing method therefor
US6320166B1 (en) * 2000-05-09 2001-11-20 Jong Do Peter Park Double layered cooking apparatus
US6467645B2 (en) 1999-01-16 2002-10-22 Jong-Do Peter Park Cooking container and manufacturing method therefor
US20120217253A1 (en) * 2011-02-26 2012-08-30 Cache Sales Llc Chafing dish that uses a sealed chamber of oil as a heat transfer medium

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US190243A (en) * 1877-05-01 Improvement in joints of vessels of enameled sheet-iron ware
US475656A (en) * 1892-05-24 Seam for sheet metal
US911085A (en) * 1907-08-07 1909-02-02 American Can Co Sheet-steel keg.
US2043694A (en) * 1933-01-14 1936-06-09 Borg Warner Laminated metal barrel
US2078530A (en) * 1932-07-28 1937-04-27 Cleveland Steel Barrel Company Container
US2197439A (en) * 1936-03-14 1940-04-16 Crown Can Company Can and method of making the same
US2321408A (en) * 1941-10-30 1943-06-08 Continental Can Co Sheet-metal container
US2327731A (en) * 1940-06-24 1943-08-24 Archie W Mcclary Method of fabricating metal drums
US2337452A (en) * 1940-12-02 1943-12-21 Robert W Compo Method of making container closures
US2362846A (en) * 1941-09-26 1944-11-14 Continental Can Co Sheet metal container
US2555700A (en) * 1946-04-08 1951-06-05 Neil Weinhagen O Container with sealing lid
US3472417A (en) * 1966-09-23 1969-10-14 Continental Can Co Method of making window can closures
US3586204A (en) * 1969-07-25 1971-06-22 Wallace Expanding Machines Container and method of making same

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US475656A (en) * 1892-05-24 Seam for sheet metal
US190243A (en) * 1877-05-01 Improvement in joints of vessels of enameled sheet-iron ware
US911085A (en) * 1907-08-07 1909-02-02 American Can Co Sheet-steel keg.
US2078530A (en) * 1932-07-28 1937-04-27 Cleveland Steel Barrel Company Container
US2043694A (en) * 1933-01-14 1936-06-09 Borg Warner Laminated metal barrel
US2197439A (en) * 1936-03-14 1940-04-16 Crown Can Company Can and method of making the same
US2327731A (en) * 1940-06-24 1943-08-24 Archie W Mcclary Method of fabricating metal drums
US2337452A (en) * 1940-12-02 1943-12-21 Robert W Compo Method of making container closures
US2362846A (en) * 1941-09-26 1944-11-14 Continental Can Co Sheet metal container
US2321408A (en) * 1941-10-30 1943-06-08 Continental Can Co Sheet-metal container
US2555700A (en) * 1946-04-08 1951-06-05 Neil Weinhagen O Container with sealing lid
US3472417A (en) * 1966-09-23 1969-10-14 Continental Can Co Method of making window can closures
US3586204A (en) * 1969-07-25 1971-06-22 Wallace Expanding Machines Container and method of making same

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4113133A (en) * 1972-06-05 1978-09-12 Cebal Rolled edge in cans
US3922984A (en) * 1972-07-05 1975-12-02 Koninklije Emballage Ind Van L Method for reconditioning a container
US4055133A (en) * 1975-07-31 1977-10-25 Gallay S.A. Method and apparatus for triple roll seaming end closures to container bodies
US4263860A (en) * 1979-06-18 1981-04-28 Greif Bros. Corporation Seal drum with end closure having reinforced seams
US4392295A (en) * 1980-10-27 1983-07-12 Nittetsu Steel Drum Co., Ltd. Method and apparatus for forming drum seam
US4705184A (en) * 1982-02-26 1987-11-10 Nittetsu Steel Drum Co., Ltd. Metal containers with seam holding end closure thereon
US4543025A (en) * 1982-02-26 1985-09-24 Nittetsu Steel Drum Co., Ltd. Metal containers - their manufacturing methods
US4556354A (en) * 1983-04-09 1985-12-03 Toyo Seikan Kaisha, Ltd. Process for production of bonded can of key-opening type
AU621325B2 (en) * 1987-11-20 1992-03-12 Koninklijke Emballage Industrie Van Leer B.V. Drum with sealed folded seam
US6191393B1 (en) * 1999-01-16 2001-02-20 Jong Do Peter Park Cooking utensil and manufacturing method therefor
US6467645B2 (en) 1999-01-16 2002-10-22 Jong-Do Peter Park Cooking container and manufacturing method therefor
US6320166B1 (en) * 2000-05-09 2001-11-20 Jong Do Peter Park Double layered cooking apparatus
US20120217253A1 (en) * 2011-02-26 2012-08-30 Cache Sales Llc Chafing dish that uses a sealed chamber of oil as a heat transfer medium

Also Published As

Publication number Publication date
SU403142A3 (de) 1973-10-19
ZA704977B (en) 1971-04-28
NL6911769A (de) 1971-02-03

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