GB1204736A - Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container of such a side wall - Google Patents

Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container of such a side wall

Info

Publication number
GB1204736A
GB1204736A GB22931/68A GB2293168A GB1204736A GB 1204736 A GB1204736 A GB 1204736A GB 22931/68 A GB22931/68 A GB 22931/68A GB 2293168 A GB2293168 A GB 2293168A GB 1204736 A GB1204736 A GB 1204736A
Authority
GB
United Kingdom
Prior art keywords
dies
container
side wall
sheet metal
head
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
Application number
GB22931/68A
Inventor
Christian Ragettli
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.)
Metal Containers Ltd
Original Assignee
Van Leer UK Ltd
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.)
Filing date
Publication date
Application filed by Van Leer UK Ltd filed Critical Van Leer UK Ltd
Priority to GB22931/68A priority Critical patent/GB1204736A/en
Priority to NL6906760A priority patent/NL139000B/en
Priority to SE6906402A priority patent/SE391464B/en
Priority to US822614A priority patent/US3581546A/en
Priority to IE653/69A priority patent/IE33454B1/en
Priority to NO1918/69A priority patent/NO130754C/no
Priority to FR6915242A priority patent/FR2008472A1/fr
Priority to ES367178A priority patent/ES367178A1/en
Priority to BR208825/69A priority patent/BR6908825D0/en
Priority to BE733079D priority patent/BE733079A/xx
Priority to AT464669A priority patent/AT298954B/en
Priority to CH737169A priority patent/CH490904A/en
Priority to DE1924716A priority patent/DE1924716C3/en
Priority to ES368571A priority patent/ES368571A1/en
Publication of GB1204736A publication Critical patent/GB1204736A/en
Priority to NL7305621A priority patent/NL7305621A/xx
Expired legal-status Critical Current

Links

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
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/06—Removing local distortions
    • B21D1/08—Removing local distortions of hollow bodies made from sheet metal
    • 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
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F5/00—Means for displaying samples
    • G09F5/02—Portable sample cases

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)
  • Making Paper Articles (AREA)
  • Forging (AREA)

Abstract

1,204,736. Restoring shape of articles; altering physical properties. VAN LEER (U.K.) Ltd. 6 May, 1969 [14 May, 1968], No. 22931/68. Headings B3Q and B3V. A method of reducing asymmetrical stresses in a cylindrical sheet metal container and restoring its shape by removing any dents comprises expanding the container by radially expanding and retracting inner dies past the yield point of the metal and compressing or shrinking the container by radially movable outer dies while supporting the container interiorly by said inner dies until the yield point is exceeded and the diameter of the cylinder is less than its original diameter and then collapsing the dies to allow the container to return to its original diameter. Apparatus for carrying out the method comprises a base 1, a head 2 and a casing 3 the base and head being connected by tension rods 4. An hydraulic cylinder 7 carried by tension rods 6 operates a conical member 9 which actuates spring-loaded segmental inner dies 10. Hydraulic cylinders 12 mounted in the head 2 reciprocate a conical member 15 which actuates segmental outer dies 17 which extend through slots in the casing 3. In order to prevent thin sheet metal from buckling the axial edges of the dies are serrated to provide zig-zag gaps between the dies.
GB22931/68A 1968-05-14 1968-05-14 Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container of such a side wall Expired GB1204736A (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
GB22931/68A GB1204736A (en) 1968-05-14 1968-05-14 Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container of such a side wall
NL6906760A NL139000B (en) 1968-05-14 1969-05-02 METHOD OF REDUCING UNDESIRABLE DISTORTIONS AND STRESSES IN AN ESSENTIAL CYLINDRICAL SHEET METAL SIDEWALL OR OF AN AXIAL PART OF SUCH SIDEWALL AND RECONDITIONED HOLDER OBTAINED BY THE APPLICATION.
SE6906402A SE391464B (en) 1968-05-14 1969-05-06 PROCEDURE FOR REMOVAL OF BUCKLES AND ASYMMETRIC TENSIONS IN A GENERAL CYLINDRICAL METAL COAT
US822614A US3581546A (en) 1968-05-14 1969-05-07 Dedenting containers and the like
IE653/69A IE33454B1 (en) 1968-05-14 1969-05-08 Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container or a portion of such a side wall
NO1918/69A NO130754C (en) 1968-05-14 1969-05-09
FR6915242A FR2008472A1 (en) 1968-05-14 1969-05-12
ES367178A ES367178A1 (en) 1968-05-14 1969-05-13 Dedenting containers and the like
BR208825/69A BR6908825D0 (en) 1968-05-14 1969-05-14 PROCESS AND APPARATUS TO REDUCE ASYMMETRIC TENSIONS ON A SIDE WALL OF GENERAL CYLINDRICAL SHEET OF A CONTAINER OR A NUT OF THIS SIDE WALL
BE733079D BE733079A (en) 1968-05-14 1969-05-14
AT464669A AT298954B (en) 1968-05-14 1969-05-14 Method and device for reducing unequal methods and device for reducing unequal stresses in a preferably cylindrical, r stresses in a preferably cylindrical, sheet metal side wall of a container sheet metal side wall of a container or a part of such a side wall or a part of such a side wall
CH737169A CH490904A (en) 1968-05-14 1969-05-14 Method and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container or part of such a side wall
DE1924716A DE1924716C3 (en) 1968-05-14 1969-05-14 Method and device for eliminating dents and asymmetrical stresses on the side wall or the casing or casing part of cylindrical containers made of sheet metal with defined SoU dimensions
ES368571A ES368571A1 (en) 1968-05-14 1969-06-19 Dedenting containers and the like
NL7305621A NL7305621A (en) 1968-05-14 1973-04-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22931/68A GB1204736A (en) 1968-05-14 1968-05-14 Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container of such a side wall

Publications (1)

Publication Number Publication Date
GB1204736A true GB1204736A (en) 1970-09-09

Family

ID=10187376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22931/68A Expired GB1204736A (en) 1968-05-14 1968-05-14 Method of and apparatus for reducing asymmetrical stresses in a generally cylindrical sheet metal side wall of a container of such a side wall

Country Status (13)

Country Link
US (1) US3581546A (en)
AT (1) AT298954B (en)
BE (1) BE733079A (en)
BR (1) BR6908825D0 (en)
CH (1) CH490904A (en)
DE (1) DE1924716C3 (en)
ES (2) ES367178A1 (en)
FR (1) FR2008472A1 (en)
GB (1) GB1204736A (en)
IE (1) IE33454B1 (en)
NL (1) NL7305621A (en)
NO (1) NO130754C (en)
SE (1) SE391464B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6045013B2 (en) * 1978-08-07 1985-10-07 株式会社日立製作所 How to straighten the tube end into a perfect circle
BR8804178A (en) * 1988-08-09 1990-01-02 Antonio Henrique Kramer PROCESS AND DEVICE FOR THE MANUFACTURE OF CAN BODIES BY STRETCHING, WITH EXPANSION OF THE DIAMETER AND REDUCING THE PLATE THICKNESS, FROM A CYLINDRICAL TIN BODY, SMALLER DIAMETER, MADE IN HIGHER THICKNESS PLATE
US5595086A (en) * 1994-08-02 1997-01-21 Aluminum Company Of America Apparatus for calibrating hollow nonsymmetrical multiplane extrusions and associated method
US5826457A (en) * 1997-07-11 1998-10-27 Eagles; Allen S. Wheel for mandrel of pipe straightening presses
US6338189B1 (en) 1999-10-07 2002-01-15 Allison Engine Company, Inc. Method and apparatus for expansion forming a workpiece using an external deformable supporting fixture
US7475583B2 (en) * 2006-02-01 2009-01-13 State Pipe & Supply, Inc. Method for repairing metal pipe
CN114011964B (en) * 2021-10-08 2024-06-18 江苏新天宝机械有限公司 Automatic core-expanding flanging die

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US373743A (en) * 1887-11-22 William kent
US2461839A (en) * 1949-02-15 Device for eestoking to shape the
US2931416A (en) * 1958-05-20 1960-04-05 Krise Otis Milk case straightener

Also Published As

Publication number Publication date
BE733079A (en) 1969-11-14
DE1924716C3 (en) 1979-08-09
IE33454L (en) 1969-11-14
FR2008472A1 (en) 1970-01-23
SE391464B (en) 1977-02-21
NO130754C (en) 1975-02-05
DE1924716B2 (en) 1978-11-30
ES368571A1 (en) 1971-05-01
DE1924716A1 (en) 1969-11-27
ES367178A1 (en) 1971-04-01
IE33454B1 (en) 1974-07-10
BR6908825D0 (en) 1973-01-02
US3581546A (en) 1971-06-01
CH490904A (en) 1970-05-31
NO130754B (en) 1974-10-28
NL7305621A (en) 1973-07-25
AT298954B (en) 1972-05-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee