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 PDFInfo
- 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- Withdrawn
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
- B21D51/54—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.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
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)
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 |
-
1994
- 1994-12-10 EP EP94119573A patent/EP0715912A1/fr not_active Withdrawn
Patent Citations (5)
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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STAA | Information on the status of an ep patent application or granted ep patent |
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18D | Application deemed to be withdrawn |
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