EP0004252B1 - Verfahren zur Herstellung eines Aerosoltrichters - Google Patents

Verfahren zur Herstellung eines Aerosoltrichters Download PDF

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Publication number
EP0004252B1
EP0004252B1 EP79810021A EP79810021A EP0004252B1 EP 0004252 B1 EP0004252 B1 EP 0004252B1 EP 79810021 A EP79810021 A EP 79810021A EP 79810021 A EP79810021 A EP 79810021A EP 0004252 B1 EP0004252 B1 EP 0004252B1
Authority
EP
European Patent Office
Prior art keywords
funnel
collar
weakening
torn out
central 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
Application number
EP79810021A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0004252A1 (de
Inventor
Werner Diemi
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.)
Styner and Bienz AG
Original Assignee
Styner and Bienz 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 Styner and Bienz AG filed Critical Styner and Bienz AG
Publication of EP0004252A1 publication Critical patent/EP0004252A1/de
Application granted granted Critical
Publication of EP0004252B1 publication Critical patent/EP0004252B1/de
Expired 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
    • B21D51/38—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures
    • B21D51/40—Making outlet openings, e.g. bung holes
    • 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
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/24—Perforating, i.e. punching holes
    • B21D28/32—Perforating, i.e. punching holes in other articles of special shape
    • 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
    • B21D51/383—Making inlet or outlet arrangements of cans, tins, baths, bottles, or other vessels; Making can ends; Making closures scoring lines, tear strips or pulling tabs

Definitions

  • the present invention relates to a method for producing an aerosol funnel, in which a sheet metal plate is deep-drawn to the funnel, then a circular central part is torn out by means of an axially acting stamp and removed in a hollow stamp, and finally the remaining opening collar is rolled up.
  • a method of this type is known from US-A-3 910 213.
  • the hollow punch on which the funnel lies has a sharp outer edge along which the material in the strong radially inward pull after the impact of the axially acting punch tears. This creates considerable tensile prestresses at the crack, which has an unfavorable effect on the subsequent rolling in of the opening collar.
  • the present invention has for its object to also achieve favorable conditions for the subsequent curling of the collar by means of a simple tool with a long service life for tearing out the middle part.
  • This object is achieved in that in the deep-drawn funnel, supported on a mandrel, by means of an embossing tool without contact with the mandrel, a weak point is embossed on the outside of the funnel, along which the middle part is then torn out.
  • a weakening crevice with a large opening angle of, for example, 90 ° is preferably pressed, as a result of which the material on the side of the crevice is considerably deformed and subjected to pressure.
  • the funnel is transferred to a next processing station, in which the central part is torn out and removed into the hollow stamp. This allows a particularly simple tool design.
  • the funnel provided with the weakening crack 6 then arrives in a further station of the tool on a hollow punch 7.
  • a punch 8 which is lowered from above and acts axially, the middle part 4 is torn out along the weakening crack 6 and through the hollow part as a middle part 4a separated from the funnel Stamp 7 pressed down.
  • the deep-drawn middle part 4a comes under one Shoulder 9 in the bore of the hollow stamp 7 and can no longer emerge upwards when the stamp 8 is subsequently raised.
  • the middle part is separated from the collar 3 by radially inwardly directed forces, and these forces are relatively small thanks to the weakening groove 6, so that the compressive stresses mentioned essentially remain on the resulting upper edge of the collar 3.
  • the funnel 1 is fixed in its position so that it cannot move upward in its position due to the radial forces that occur.
  • the funnel is then removed from the hollow punch 7 according to FIG. 2, and the collar 3 is rolled up in a manner known per se in order to form a round bead.
  • This bead is indicated in dash-dotted lines in Figure 2 and designated 10.
  • An advantage of the method according to the invention is that the mandrel 2 and the embossing tool 5 and of course also the punches 7 and 8 do not have to be very precise, since they can never come into direct contact with one another and consequently can also be produced from very hard material . The wear is therefore extremely low.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Punching Or Piercing (AREA)
  • Nozzles (AREA)
EP79810021A 1978-03-08 1979-03-05 Verfahren zur Herstellung eines Aerosoltrichters Expired EP0004252B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2506/78 1978-03-08
CH250678A CH626545A5 (enrdf_load_stackoverflow) 1978-03-08 1978-03-08

Publications (2)

Publication Number Publication Date
EP0004252A1 EP0004252A1 (de) 1979-09-19
EP0004252B1 true EP0004252B1 (de) 1982-05-12

Family

ID=4235325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79810021A Expired EP0004252B1 (de) 1978-03-08 1979-03-05 Verfahren zur Herstellung eines Aerosoltrichters

Country Status (4)

Country Link
US (1) US4290294A (enrdf_load_stackoverflow)
EP (1) EP0004252B1 (enrdf_load_stackoverflow)
JP (1) JPS54131480A (enrdf_load_stackoverflow)
CH (1) CH626545A5 (enrdf_load_stackoverflow)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT391351B (de) * 1985-11-06 1990-09-25 Steyr Daimler Puch Ag Zweitakt-brennkraftmaschine mit kurbelgehaeusespuelung und einer duese zur kraftstoffeinspritzung
JPS6462231A (en) * 1987-09-01 1989-03-08 Shiseido Co Ltd Metal made container and its production
JPS6462232A (en) * 1987-11-11 1989-03-08 Shiseido Co Ltd Aerosol container and its production
US8118197B2 (en) * 2007-06-18 2012-02-21 Precision Valve Corporation Method of making aerosol valve mounting cups and resultant cups
DE102013015051A1 (de) * 2013-09-12 2015-03-12 G. Staehle Gmbh U. Co. Kg Verfahren zur Herstellung eines Rohlings einer Dose
CN112605258B (zh) * 2020-11-30 2022-09-06 宝山钢铁股份有限公司 一种气雾罐的加工模具及方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1173793A (en) * 1916-02-29 george
US790735A (en) * 1905-03-10 1905-05-23 Morris Martin Tool for cutting holes in metal tanks.
GB488427A (en) * 1936-01-11 1938-07-06 Crown Cork & Seal Co Improvements in metal bottles or containers and methods of manufacturing the same
US2772735A (en) * 1953-10-09 1956-12-04 Continental Can Co Multiple slide press for cutting sheet metal parts
US3688718A (en) 1969-10-23 1972-09-05 Aluminum Co Of America Method and apparatus for scoring metal container ends
US3706292A (en) * 1970-08-05 1972-12-19 Nat Steel Corp Manufacture of metal containers with rimmed opening
US3726244A (en) * 1971-04-12 1973-04-10 American Can Co Method and apparatus for forming a fully curled neck on a drawn and ironed pressure can
JPS5313073B2 (enrdf_load_stackoverflow) * 1973-01-11 1978-05-08
NL7401410A (enrdf_load_stackoverflow) * 1973-02-12 1974-08-14
CH577860A5 (enrdf_load_stackoverflow) * 1974-05-30 1976-07-30 Styner & Bienz Ag
US3910213A (en) * 1974-11-15 1975-10-07 Continental Can Co Method of perforating the necks of aerosol containers
US3998086A (en) * 1974-11-15 1976-12-21 Continental Can Company, Inc. Apparatus for perforating the necks of aerosol containers
US4027612A (en) * 1975-07-16 1977-06-07 Continental Can Company, Inc. Method for forming container scored metal flap areas

Also Published As

Publication number Publication date
US4290294A (en) 1981-09-22
JPS54131480A (en) 1979-10-12
EP0004252A1 (de) 1979-09-19
JPS6344456B2 (enrdf_load_stackoverflow) 1988-09-05
CH626545A5 (enrdf_load_stackoverflow) 1981-11-30

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