US3757716A - Curler tool - Google Patents
Curler tool Download PDFInfo
- Publication number
- US3757716A US3757716A US00294901A US3757716DA US3757716A US 3757716 A US3757716 A US 3757716A US 00294901 A US00294901 A US 00294901A US 3757716D A US3757716D A US 3757716DA US 3757716 A US3757716 A US 3757716A
- Authority
- US
- United States
- Prior art keywords
- curl
- radius
- curler
- tool
- annular portion
- 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
Images
Classifications
-
- 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
- B21D51/2615—Edge treatment of cans or tins
- B21D51/2623—Curling
-
- 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
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/12—Edge-curling
-
- 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
-
- 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
-
- 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
Definitions
- ABSTRACT A continuous curl formed on the periphery of a can end component prior to the first and second operations of double seaming the can end component to an end of a can body has an inner annular portion of a configuration substantially that of a surface of revolution generated by three successive merging arcs including an inner arc struck by a first radius R,, a middle are struck by a second radius R and an outer arc struck by a third radius R where R, R, R and an outer annular portion of a configuration substantially that of a generally planar surface which is parallel to a plane formed by the innermost marginal edge of the inner arc of the inner annular portion of, the continuous curl.
- a curler tool for forming the continuous curl has. a curl-forming groove which has a contour substantially the same as the configuration of the inner and outer annular portions of the continuous curl formedby the curler tool.
- the present invention relates generally to improved double seams and more particularly to a continuous curl formed on the periphery of a can end closure and a curler tool for making the same which allows for subsequent improved double seam formation.
- the curler tool which was used to form the curl on the end closure prior to the first and second operations double seaming, had a curlforming groove with a single radiused contour, commonly within the range of from approximately 0.038 inch to 0.042 inch.
- wrinkles formed on the cover hook feature which subsequently adversely affected the formation of the double seam and the quality of the seal between the end closure and the can body as has been described hereinbefore.
- the curler tool of the present invention has a curl-forming groove of a particular contour which provides for the preforming of the cover hook feature on the curl in the curler operation prior to the first operation double seaming to thereby permit a reduction in the'curl reforming work subsequently required in the first operation double seaming.
- This work reduction greatly reduces or eliminates the magnitude of the wrinkles formed on the cover hook feature during the first operation double seaming and results in an improved double seam.
- the continuous curl of the present invention, being formed by the curler tool has a configuration substantially the same as the contour of the curler tool groove which forms the curl.
- a continuous curl formed on the periphery of a can end component prior to the first and second operations of double seaming the can end component to an end of a can body has an inner annular portion of a configuration substantially that of a surface of revolution generated by three successive merging arcs including an inner arc struck by a first radius R,, a middle are struck by a second radius R,, and an outer arc struck by a third radius R where R, R, R and an outer annular portion of a configuration substantially that of a generally planar surface which is parallel to a plane formed by the innermost marginal edge of the inner arc of the inner annular portion of the continuous curl.
- a curler tool for forming the continuous curl has a curlforming groove of a contour substantially the same as the configuration of the inner and outer annular portions of the continuous curl formed by the curler tool.
- FIG. 1 is a fragmentary sectional view of a can end closure as initially die-formed before being curled by the curler tool of the present invention
- FIG. 2 is an enlarged fragmentary sectional view of the can end closure of FIG. 1 and of the curler tool of the present invention showing the peripheral flange of the end closure aligned with the curler tool before the curl-forming operation;
- FIG. 3 is an enlarged fragmentary sectional view of the end closure of FIG. 1 and of the curler tool showing the continuous curl of the present invention formed in the tool after the curl-forming operation;
- FIG. 1 there is illustrated a fragmentary section of a circular tinplate can end closure, generally designated 10, as initially die-formed before being curled by a curler tool, generally designated 12 (FIG. 2).
- the end closure 10 generally comprises a flat countersunk central panel 14 which merges at its outer end with a generally upwardly extending countersink wall 16 which in turn merges at its upper end with a generally outwardly extending, curved, annular flange 18.
- annular flange 18 of the end closure 10 is shown aligned with a curl-forming groove, generally designated 20, formed in a body 22 of the curler tool 12.
- the curl-forming groove 20 is defined by an inner surface 24 and an outer surface 26.
- the inner surface 24 has a contour substantially that of a surface of revolution generated by three successive merging arcs.
- the first of the three successive arcs, defining an inner surface section 28, is struck by a first radius R
- the first radius R strikes the first are by sweeping through a first angle 0, about a first center of curvature C
- the second of the three successive arcs, defining a middle surface section 30, is struck by a second radius R,.
- the second radius R strikes the second are by sweeping through a second :angle 0, about a second center of curvature C,, with the second center C, being located along the first radius R at the end of its sweep through the first angle 8
- the third of the three successive arcs. defining an outer surface section 32, is struck by a third radius R,.
- the third radius R, strikes the third are by sweeping through a third angle 0;, about a third center of curvature C, with the third center C being located along the second radius R, at the end of its sweep through the
- the first radius R is approximately equal to 0.166 inch and the first angle 6, is approximately equal to 20
- the second radius R is approximately equal 0.050 inch and the second angle 0, is approximately equal to 80
- the third radius R is approximately equal to 0.025 inch and the third angle 6, is approximately equal to
- the outer surface 26 of the curl-forming groove 20 has a contour substantially that of a generally planar surface which is in a plane P, substantially parallel to a plane P formed by the innermost marginal edge 34 of the inner surface section 28 of the inner surface 24 of the curl-forming groove 20.
- the marginal edges 36, 38 of an outer portion 40 of the peripheral annular flange 18, which portion 40 will be formed into a continuous curl 42 by the curler tool 12 are brought into contact with the surfaces 44, 46 of the curler tool 12, the surfaces 44, 46 being exterior respectively to the inner and outer surfaces 24, 26 of the curl-forming groove 20.
- the outer portion 40 is moved toward the curl-forming groove 20 which causes the reforming or molding of the outer portion 40 into the configuration of the continuous curl 42 as shown in FIG. 3.
- the continuous curl 42 has a configuration which is substantially the same as the contour of the inner and outer surfaces 24, 26 of the curlforming groove 20 of the curler tool 12.
- the curl 42 is comprised by an inner annular portion 48 and an outer annular portion 50.
- the inner annular portion 48 has a configuration substantially that of a surface of revolution generated by three successive merging arcs, where the surface of revolution is coincident with the exterior surface 52 of the inner annular portion 48.
- the first of the three successive arcs, defining the exterior surface of an inner section 54 of the inner annular portion 48, is struck by the first radius R,.
- the first radius R strikes the first arc by sweeping through the first angle 0,, about the first center of curvature C,.
- the second of the three successive arcs, defining the exterior surface of the middle section 56 of the inner annular portion 48, is struck by the second radius R
- the second radius R strikes the second are by sweeping through the second angle 0,, about the second center of curvature C,, with the second center C, being located along the first radius R, at the end of its sweep through the first angle 0,.
- the third of the three successive arcs, defining the exterior surface of an outer section 58 of the inner annular portion 48, is struck by the third radius R
- the third radius R, strikes the third are by sweeping through the third angle about the third center of curvature C with the third center C being located along the second radius R, at the end of its sweep through the second angle 0,.
- the preferred lengths of the radii R,, R and R and degrees of the angles 0,, 0 ,'and 0,, are the same with regard to the continuous curl 42 as those given with regard to the curler tool 12.
- the exterior surface of the outer annular portion 50 of the continuous curl 42 has a configuration substantially that of a generally planar surface which is in the plane P, substantially parallel to the plane P formed by the exterior surface of the innermost edge 60 of the inner section 54 of the inner annular portion 48 of the curl 42.
- FIG. 4 there is illustrated a fragmentary section of the end closure 10 with the continuous curl 42 being formed on the periphery thereof.
- a curler tool for forming a continuous curl on the periphery of a can end component prior to the first and second operations of double seaming said can end component to an end of a can body, said tool comprising:
- a curl-forming groove formed in said body and defined by an inner surface having a contour substantially that of a surface of revolution generated by three successive merging arcs including an inner arc struck by a first radius R,, a middle are struck by a second radius R and an outer arc struck by a third radius R where R, R R and an outer surface having a contour substantially that of a generally planar surface which is in a plane substantially parallel to a plane formed by the innermost marginal edge of said inner are.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Hair Curling (AREA)
Abstract
Description
Claims (3)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15206671A | 1971-06-11 | 1971-06-11 | |
US29490172A | 1972-10-04 | 1972-10-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3757716A true US3757716A (en) | 1973-09-11 |
Family
ID=26849218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00294901A Expired - Lifetime US3757716A (en) | 1971-06-11 | 1972-10-04 | Curler tool |
Country Status (1)
Country | Link |
---|---|
US (1) | US3757716A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4055133A (en) * | 1975-07-31 | 1977-10-25 | Gallay S.A. | Method and apparatus for triple roll seaming end closures to container bodies |
US4560313A (en) * | 1981-11-19 | 1985-12-24 | Metal Box P.L.C. | Containers |
US20040159697A1 (en) * | 2003-02-19 | 2004-08-19 | Rexam Beverage Can Company | Seaming apparatus and method for cans |
US7743635B2 (en) | 2005-07-01 | 2010-06-29 | Ball Corporation | Method and apparatus for forming a reinforcing bead in a container end closure |
US7938290B2 (en) | 2004-09-27 | 2011-05-10 | Ball Corporation | Container end closure having improved chuck wall with strengthening bead and countersink |
CN102744309A (en) * | 2012-07-12 | 2012-10-24 | 宁波森富机电制造有限公司 | Guided elliptical tracking curling machine |
US8313004B2 (en) | 2001-07-03 | 2012-11-20 | Ball Corporation | Can shell and double-seamed can end |
US8727169B2 (en) | 2010-11-18 | 2014-05-20 | Ball Corporation | Metallic beverage can end closure with offset countersink |
JP2016097416A (en) * | 2014-11-19 | 2016-05-30 | キリン株式会社 | Can seam-fastening method, first seam-fastening roll and can seam-fastening device |
JP2016097418A (en) * | 2014-11-19 | 2016-05-30 | キリン株式会社 | Can seam-fastening method |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2196181A (en) * | 1936-01-08 | 1940-04-09 | Charlotte A Arnesen | Container |
US3146749A (en) * | 1961-06-16 | 1964-09-01 | American Can Co | Method of forming a neck on a can part |
US3204595A (en) * | 1960-08-02 | 1965-09-07 | American Can Co | Clinched seam formation |
US3367533A (en) * | 1964-12-11 | 1968-02-06 | American Can Co | Container seam and method of making same |
US3715054A (en) * | 1971-06-11 | 1973-02-06 | American Can Co | Can end closure curl |
-
1972
- 1972-10-04 US US00294901A patent/US3757716A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2196181A (en) * | 1936-01-08 | 1940-04-09 | Charlotte A Arnesen | Container |
US3204595A (en) * | 1960-08-02 | 1965-09-07 | American Can Co | Clinched seam formation |
US3146749A (en) * | 1961-06-16 | 1964-09-01 | American Can Co | Method of forming a neck on a can part |
US3367533A (en) * | 1964-12-11 | 1968-02-06 | American Can Co | Container seam and method of making same |
US3715054A (en) * | 1971-06-11 | 1973-02-06 | American Can Co | Can end closure curl |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4055133A (en) * | 1975-07-31 | 1977-10-25 | Gallay S.A. | Method and apparatus for triple roll seaming end closures to container bodies |
US4560313A (en) * | 1981-11-19 | 1985-12-24 | Metal Box P.L.C. | Containers |
US8313004B2 (en) | 2001-07-03 | 2012-11-20 | Ball Corporation | Can shell and double-seamed can end |
US10843845B2 (en) | 2001-07-03 | 2020-11-24 | Ball Corporation | Can shell and double-seamed can end |
US10246217B2 (en) | 2001-07-03 | 2019-04-02 | Ball Corporation | Can shell and double-seamed can end |
US9371152B2 (en) | 2001-07-03 | 2016-06-21 | Ball Corporation | Can shell and double-seamed can end |
US8931660B2 (en) | 2001-07-03 | 2015-01-13 | Ball Corporation | Can shell and double-seamed can end |
US20040159697A1 (en) * | 2003-02-19 | 2004-08-19 | Rexam Beverage Can Company | Seaming apparatus and method for cans |
US6915553B2 (en) * | 2003-02-19 | 2005-07-12 | Rexam Beverage Can Company | Seaming apparatus and method for cans |
US20120292329A1 (en) * | 2004-09-27 | 2012-11-22 | Ball Corporation | Container End Closure With Improved Chuck Wall and Countersink |
US8505765B2 (en) * | 2004-09-27 | 2013-08-13 | Ball Corporation | Container end closure with improved chuck wall provided between a peripheral cover hook and countersink |
US8235244B2 (en) | 2004-09-27 | 2012-08-07 | Ball Corporation | Container end closure with arcuate shaped chuck wall |
US7938290B2 (en) | 2004-09-27 | 2011-05-10 | Ball Corporation | Container end closure having improved chuck wall with strengthening bead and countersink |
US8205477B2 (en) | 2005-07-01 | 2012-06-26 | Ball Corporation | Container end closure |
US7743635B2 (en) | 2005-07-01 | 2010-06-29 | Ball Corporation | Method and apparatus for forming a reinforcing bead in a container end closure |
US8727169B2 (en) | 2010-11-18 | 2014-05-20 | Ball Corporation | Metallic beverage can end closure with offset countersink |
CN102744309A (en) * | 2012-07-12 | 2012-10-24 | 宁波森富机电制造有限公司 | Guided elliptical tracking curling machine |
CN102744309B (en) * | 2012-07-12 | 2014-08-13 | 宁波森富机电制造有限公司 | Guided elliptical tracking curling machine |
JP2016097416A (en) * | 2014-11-19 | 2016-05-30 | キリン株式会社 | Can seam-fastening method, first seam-fastening roll and can seam-fastening device |
JP2016097418A (en) * | 2014-11-19 | 2016-05-30 | キリン株式会社 | Can seam-fastening method |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: AMERICAN NATIONAL CAN COMPANY, STATELESS Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354 Effective date: 19870430 Owner name: AMERICAN NATIONAL CAN COMPANY Free format text: MERGER;ASSIGNORS:AMERICAN CAN PACKAGING INC.;TRAFALGAR INDUSTRIES, INC. (MERGED INTO);NATIONAL CAN CORPORATION (CHANGED TO);REEL/FRAME:004835/0354 Effective date: 19870430 Owner name: AMERICAN CAN PACKAGING INC., CONNECTICUT Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338 Effective date: 19861107 Owner name: AMERICAN CAN PACKAGING INC., AMERICAN LANE, GREENW Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:AMERICAN CAN COMPANY, A NJ CORP.;REEL/FRAME:004835/0338 Effective date: 19861107 |