EP0349521A2 - Dispositif de façonnage d'articles creux - Google Patents

Dispositif de façonnage d'articles creux Download PDF

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Publication number
EP0349521A2
EP0349521A2 EP89890123A EP89890123A EP0349521A2 EP 0349521 A2 EP0349521 A2 EP 0349521A2 EP 89890123 A EP89890123 A EP 89890123A EP 89890123 A EP89890123 A EP 89890123A EP 0349521 A2 EP0349521 A2 EP 0349521A2
Authority
EP
European Patent Office
Prior art keywords
die
reduced
dies
shaping device
shaping
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.)
Withdrawn
Application number
EP89890123A
Other languages
German (de)
English (en)
Other versions
EP0349521A3 (fr
Inventor
Wolfgang Pschorr
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.)
Austria Metall AG
Original Assignee
Austria Metall AG
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 Austria Metall AG filed Critical Austria Metall AG
Publication of EP0349521A2 publication Critical patent/EP0349521A2/fr
Publication of EP0349521A3 publication Critical patent/EP0349521A3/fr
Withdrawn legal-status Critical Current

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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
    • B21D51/2638—Necking
    • 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
    • B21D41/00—Application of procedures in order to alter the diameter of tube ends
    • B21D41/04—Reducing; Closing
    • 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
    • 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

Definitions

  • the invention relates to a shaping device for hollow bodies, in particular cans.
  • Conventional monobloc cans have a seamless cylindrical body which has a conical or spherical end on its top, in which the lid with valve is inserted.
  • the shape is therefore limited to the height, the diameter and the design of the end of the can.
  • the can body itself is produced by extrusion and the finish is carried out by pressing in several steps. This is done in such a way that the dies are pushed from the open side of the can body over the jacket and press it in rotationally symmetrically. More recently, cylindrical, rotationally symmetrical cross-sectional reductions of the can body have been produced in this way. This made it possible to create can bodies that have the standard jumps in the diameter standard series between the normal can body and the reduced body part, which means that small lids and valves can be used.
  • transition between the two cross sections lies in a plane normal to the axis of rotation of the can body.
  • Another design option can be to reduce or expand the can body by beads or rollers.
  • a step or transition between the reduced and non-reduced cross-section of the can is desired, which is of any shape. This is not possible with the tools used today. Because: due to a heel that is not normal to the can axis, uneven pressure is exerted on the can body and deforms it over a wide area, whereby the wall of the cans is drawn in folds.
  • a tool was created for this purpose that consists of a hollow outer die, with a cylindrical interior and an inner die with a cylindrical outer surface, the inner die is arranged concentrically in the outer die and one of the two dies has a paragraph of any shape on its cylindrical wall as a transition between two Has rotary cylinders with the same axis.
  • the uneven loading of the can body by the outer die is prevented, since the inner die absorbs the load.
  • the can body remains straight and deformation occurs only in the area of the indentation of the heel in the die.
  • the bottle body tapers towards its open side, it is particularly favorable to design the shaping device in such a way that the outer die has an arbitrarily shaped shoulder.
  • a particularly inexpensive method for producing a can body for a can with a reduced upper part and arbitrarily shaped paragraph is a particularly inexpensive method for producing a can body for a can with a reduced upper part and arbitrarily shaped paragraph.
  • a particularly favorable method for producing a can body for a can with a reduced upper part and any shaped paragraph between the two parts can be done so that the can is first reduced in cross-section from its open side in a known manner and then the can with the is moved open side into the forming device between the two dies, the shoulder on the outer die points towards the unreduced area of the can, the rotary cylinder diameter of the outer die approximately corresponds to the reduced or normal outer diameter of the can, the rotary cylinder diameter of the inner die corresponds approximately to the reduced inner diameter of the can and this area comes to rest on the outer wall of the inner die due to the heel and cylinder surface pressing over it, the can wall being guided through the two dies on both sides of the forming point.
  • the reduced part of the can body is guided between the dies and the wall material can flow between the two dies during the pressing process and thereby receives the shape like the previously reduced part. Avoiding the can body wall is avoided.
  • the rotationally symmetrical tapering of the cans has therefore proven to be advantageous as a preparatory step for this new shaping method, since all that is required is to produce any paragraph on the can body in one work step and the already reduced part as additional support for the can body to the known holder on the can base serves.
  • the can is withdrawn at least once, axially rotated, moved forward again and the non-reduced can part is further deformed in each case.
  • the can body After shaping the heel, the can body can be widened again in the reduced part closer to the can opening in a manner known per se and a closure pressed on.
  • the shaping device consists of the outer die 1, which has any paragraph 2 and the inner die 3, which consists only of a rotating cylindrical body.
  • the can body 4 is clamped in the holder 5 and has an unreduced part 6, which corresponds to a standard can diameter, and a reduced part 7.
  • the paragraph between the two parts 5 and 6 lies in a plane of any angle to the axis of rotation 8. Between the two dies 1 and 3 there is only so much space that the wall 10 of the can body 4 can be accommodated.
  • the dies 1 and 3 are fixed to one another by means of the flanges 11 and 12 and also serve as fastening in the socket (not shown).
  • the design is not limited to the drawing, but is only an example.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Containers Having Bodies Formed In One Piece (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
EP19890890123 1988-06-29 1989-04-27 Dispositif de façonnage d'articles creux Withdrawn EP0349521A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1694/88 1988-06-29
AT169488A AT390745B (de) 1988-06-29 1988-06-29 Formgebungsgeraet fuer hohlkoerper

Publications (2)

Publication Number Publication Date
EP0349521A2 true EP0349521A2 (fr) 1990-01-03
EP0349521A3 EP0349521A3 (fr) 1991-05-08

Family

ID=3518974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890890123 Withdrawn EP0349521A3 (fr) 1988-06-29 1989-04-27 Dispositif de façonnage d'articles creux

Country Status (2)

Country Link
EP (1) EP0349521A3 (fr)
AT (1) AT390745B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009132269A3 (fr) * 2008-04-24 2009-12-30 Crown Packaging Technology, Inc. Dispositif de striction à grande vitesse
US9290329B2 (en) 2008-04-24 2016-03-22 Crown Packaging Technology, Inc. Adjustable transfer assembly for container manufacturing process

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE168713C (fr) * 1902-09-20
GB999309A (en) * 1962-02-14 1965-07-21 Rudolf Lechner Method of and apparatus for producing seamless metal bottles
BE795263A (fr) * 1972-02-11 1973-05-29 K M Engineering A G Procede de fabrication sans enlevement de copeaux de recipients en tole d'acier
US3948073A (en) * 1974-09-27 1976-04-06 Robert Lovell Apparatus and method of metal forming
EP0020926A1 (fr) * 1979-06-25 1981-01-07 Ball Corporation Procédé pour rétreindre des boîtes métalliques à paroi mince et boîte fabriquée d'après le procédé
US4392764A (en) * 1981-09-18 1983-07-12 Continental Can Company, Inc. Necked-in container body and apparatus for and method of forming same
US4413497A (en) * 1981-09-21 1983-11-08 Continental Can Company, Inc. Method of forming domed end for container
US4519232A (en) * 1982-12-27 1985-05-28 National Can Corporation Method and apparatus for necking containers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009132269A3 (fr) * 2008-04-24 2009-12-30 Crown Packaging Technology, Inc. Dispositif de striction à grande vitesse
US8601843B2 (en) 2008-04-24 2013-12-10 Crown Packaging Technology, Inc. High speed necking configuration
US9290329B2 (en) 2008-04-24 2016-03-22 Crown Packaging Technology, Inc. Adjustable transfer assembly for container manufacturing process
US9308570B2 (en) 2008-04-24 2016-04-12 Crown Packaging Technology, Inc. High speed necking configuration
US9968982B2 (en) 2008-04-24 2018-05-15 Crown Packaging Technology, Inc. High speed necking configuration
US10751784B2 (en) 2008-04-24 2020-08-25 Crown Packaging Technology, Inc. High speed necking configuration

Also Published As

Publication number Publication date
EP0349521A3 (fr) 1991-05-08
AT390745B (de) 1990-06-25
ATA169488A (de) 1989-12-15

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