EP0715912A1 - Procédé de fabrication de douilles pour cartouches et cartouches fabriquées selon le procédé - Google Patents

Procédé de fabrication de douilles pour cartouches et cartouches fabriquées selon le procédé Download PDF

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Publication number
EP0715912A1
EP0715912A1 EP94119573A EP94119573A EP0715912A1 EP 0715912 A1 EP0715912 A1 EP 0715912A1 EP 94119573 A EP94119573 A EP 94119573A EP 94119573 A EP94119573 A EP 94119573A EP 0715912 A1 EP0715912 A1 EP 0715912A1
Authority
EP
European Patent Office
Prior art keywords
driving piston
edges
flange
casing
jacket
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Withdrawn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
EP94119573A
Other languages
German (de)
English (en)
Inventor
Wolfgang Postler
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.)
Muhr & Sohne and Cokg GmbH
Original Assignee
Muhr & Sohne and Cokg GmbH
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 Muhr & Sohne and Cokg GmbH filed Critical Muhr & Sohne and Cokg GmbH
Priority to EP94119573A priority Critical patent/EP0715912A1/fr
Publication of EP0715912A1 publication Critical patent/EP0715912A1/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Withdrawn legal-status Critical Current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
    • B21D51/54—Making hollow objects characterised by the use of the objects cartridge cases, e.g. for ammunition, for letter carriers in pneumatic-tube plants
    • 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
    • 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
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0005—Containers or packages provided with a piston or with a movable bottom or partition having approximately the same section as the container

Definitions

  • the invention relates to a method for producing sleeves for cartridges, which consist of a jacket provided on one side with a nozzle base and serve to guide a driving piston.
  • Cartridges for applying pasty materials such as jointing or sealing compounds, adhesives and the like.
  • Auxiliary devices similar to pistols, for example compressed air, are used to a large extent in the commercial and private sectors.
  • the cartridges consist of a sleeve which has a nozzle base for receiving the pasty material, the nozzle base of which has a threaded connector provided with a piercing membrane during manufacture and into which, after the filling, a fitting driving piston which simultaneously serves as a closure is inserted.
  • the cartridges have hitherto been manufactured largely from plastic with a view to ensuring that the sleeves and the driving pistons can be manufactured to fit without any significant problems, ensuring the absolute tightness of the filled cartridge.
  • problems caused by the emptied Cartridges caused environmental pollution and the resulting considerable disposal costs.
  • the present invention has for its object to provide a method by means of which the manufacture of easily disposable cartridges is possible in a simple manner.
  • the invention provides a method which for the first time produces cartridges of this type from inexpensive and easily recyclable steel sheet by longitudinal welding of a simple blank which is shaped into a tubular body.
  • the method solves the problem of piston tightness in the area of the longitudinal weld seam by using the roller seam welding process, which allows the production of a smooth inner surface in the seam area, for (overlapping) welding of the edges prepared accordingly by settling and, in particular, by producing the sleeve jacket initially with undersize and subsequent plastic expansion to the required nominal size, at which any unevenness that may have occurred during the previous work stages, particularly in the seam area, is compensated for by deviations from the required round shape.
  • the process thus enables the production of cartridges that meet all requirements regarding piston tightness, value for money and disposability.
  • the tubular body is then expanded by means of a cylindrical segment expander to the inside diameter corresponding to the diameter of the driving piston, which not only achieves the required accuracy of fit while compensating for all the manufacturing tolerances to be observed in the previous processing stages, but also complete piston density in that due to the material stretching Any unevenness, especially any flat zones that may occur in the seam area during roll seam welding, are compensated for during expansion.
  • the jacket 3 - see FIGS. 2 to 4 - is provided on one side with a flange 8 onto which the nozzle base 1, 2, which is advantageously also made of sheet steel, in particular tinplate, is crimped. It also has a border 9 on the other (piston) side, which - FIG. 2 - can remain as an open border even after the piston 4 has been filled and inserted, or - FIG. 3 - can be used to attach a push-in cover 10. Finally, the sleeve - FIG. 4 - can also be provided with a flange 11 at the end on the piston side, onto which, after the piston 4 has been filled and inserted, a safety cover 13 having a circular predetermined tear seam 12 is crimped.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
EP94119573A 1994-12-10 1994-12-10 Procédé de fabrication de douilles pour cartouches et cartouches fabriquées selon le procédé Withdrawn EP0715912A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP94119573A EP0715912A1 (fr) 1994-12-10 1994-12-10 Procédé de fabrication de douilles pour cartouches et cartouches fabriquées selon le procédé

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP94119573A EP0715912A1 (fr) 1994-12-10 1994-12-10 Procédé de fabrication de douilles pour cartouches et cartouches fabriquées selon le procédé

Publications (1)

Publication Number Publication Date
EP0715912A1 true EP0715912A1 (fr) 1996-06-12

Family

ID=8216522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94119573A Withdrawn EP0715912A1 (fr) 1994-12-10 1994-12-10 Procédé de fabrication de douilles pour cartouches et cartouches fabriquées selon le procédé

Country Status (1)

Country Link
EP (1) EP0715912A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2035856A (en) * 1978-11-27 1980-06-25 Gariglio Emmanuel Manufacture of tubular bodies
EP0058989A2 (fr) * 1981-02-24 1982-09-01 Sealright Co., Inc. Cartouche distributrice
DE3520539A1 (de) * 1984-06-07 1985-12-12 Metalgrafica Rojek S.A., Cajamar Verfahren zur herstellung von aus weissblech gefertigten buechsen oder dosen und das nach dem verfahren erstellte erzeugnis
GB2225548A (en) * 1988-11-30 1990-06-06 Cefin Spa A device for pre-calibrating hollow cylindrical bodies in seam welding machines
EP0413049A1 (fr) * 1989-08-18 1991-02-20 Bersanetti S.N.C. Di Bersanetti Loredano E C. Cartouche pour matière d'étanchéité en polyuréthane

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2035856A (en) * 1978-11-27 1980-06-25 Gariglio Emmanuel Manufacture of tubular bodies
EP0058989A2 (fr) * 1981-02-24 1982-09-01 Sealright Co., Inc. Cartouche distributrice
DE3520539A1 (de) * 1984-06-07 1985-12-12 Metalgrafica Rojek S.A., Cajamar Verfahren zur herstellung von aus weissblech gefertigten buechsen oder dosen und das nach dem verfahren erstellte erzeugnis
GB2225548A (en) * 1988-11-30 1990-06-06 Cefin Spa A device for pre-calibrating hollow cylindrical bodies in seam welding machines
EP0413049A1 (fr) * 1989-08-18 1991-02-20 Bersanetti S.N.C. Di Bersanetti Loredano E C. Cartouche pour matière d'étanchéité en polyuréthane

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