EP0543695B1 - Verfahren und Anlage zum Formen der Hülse einer metallischen Dose - Google Patents

Verfahren und Anlage zum Formen der Hülse einer metallischen Dose Download PDF

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Publication number
EP0543695B1
EP0543695B1 EP92402965A EP92402965A EP0543695B1 EP 0543695 B1 EP0543695 B1 EP 0543695B1 EP 92402965 A EP92402965 A EP 92402965A EP 92402965 A EP92402965 A EP 92402965A EP 0543695 B1 EP0543695 B1 EP 0543695B1
Authority
EP
European Patent Office
Prior art keywords
installation according
station
box body
die
conveyor
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 - Lifetime
Application number
EP92402965A
Other languages
English (en)
French (fr)
Other versions
EP0543695A1 (de
Inventor
Maurice Riviere
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.)
Crown European Holdings SA
Crown Packaging UK Ltd
Original Assignee
CarnaudMetalbox SA
Metal Box PLC
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 CarnaudMetalbox SA, Metal Box PLC filed Critical CarnaudMetalbox SA
Publication of EP0543695A1 publication Critical patent/EP0543695A1/de
Application granted granted Critical
Publication of EP0543695B1 publication Critical patent/EP0543695B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21D26/00—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces
    • B21D26/02—Shaping without cutting otherwise than using rigid devices or tools or yieldable or resilient pads, i.e. applying fluid pressure or magnetic forces by applying fluid pressure
    • B21D26/033—Deforming tubular bodies
    • B21D26/049—Deforming bodies having a closed end
    • 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
    • B65D83/14—Containers or packages with special means for dispensing contents for delivery of liquid or semi-liquid contents by internal gaseous pressure, i.e. aerosol containers comprising propellant for a product delivered by a propellant
    • B65D83/38—Details of the container body

Definitions

  • the invention relates to a box body shaping installation according to the preamble of claim 1.
  • box body shaping process generally implemented on box bodies formed by the assembly of at least two elements, typically a tubular part and a bottom crimped at one end thereof.
  • the tubular part can be a cylinder with circular, rectangular or square section.
  • This method uses a core mechanism intended to be introduced axially inside the box body, through the opening of the latter and having sectors which can be spaced apart from each other radially outwards. so as to come into contact with the internal wall of the box body to be conformed.
  • This operation prints a permanent deformation to the box body and the shape obtained depends on that of the core sectors.
  • the deformation means and its actuation system are essentially mechanical.
  • the boxes thus shaped have appearance defects inherent in the shaping system itself.
  • the imprints of the various sectors are relatively visible on the walls of the box body.
  • the latter cannot therefore have a perfectly regular surface condition. Fingerprints can even result in scratches on the varnish that can initiate corrosion. They can also constitute initiations of rupture.
  • the mechanism is complicated and expensive.
  • the document GB-A-982 808 describes a machine for shaping a container by hydroforming but the very structure of the machine does not make it possible to obtain the high production rates which are essential in the field of the manufacture of box bodies. metal packaging.
  • the invention provides a more efficient arrangement making it possible to obtain hydroformed can bodies with an excellent surface finish while achieving high production rates.
  • this object is achieved by an installation for shaping metal box bodies comprising a conveyor, a filling station with at least one box body, provided with means for introducing a desired quantity of a liquid into it.
  • a shaping station arranged downstream of said filling station, comprising at least one matrix adapted to receive such a can body and internally shaped according to the desired final shape of said can body, characterized in that said conveyor extends less between a point upstream of the filling station and a point downstream of the shaping station, and comprises bases which are integral with the conveyor and movable with it, each having a shape adapted to receive a box body and in that the or each matrix comprises two lateral half-shells mounted movable so as to be able to be separated from one another and provided with recesses defined in the vicinity of their ends in lower, in that said recesses are shaped so that said half-shells can adapt to the aforementioned base by surrounding it so that in the configuration where the two half-shells are applied one against the other, said base constitutes
  • the shaped can body On leaving the die, the shaped can body is generally emptied of the liquid it contains and fed to an oven or similar drying means.
  • the liquid can simply be water.
  • connection end piece may advantageously include an axially shaped sliding plug to adapt in leaktight manner to the opening of the box body trapped in the matrix. The plug is stressed during the phase of shaping the can body to apply the axial force mentioned above to the latter.
  • the installation shown in the drawings successively comprises a supply conveyor 11 on which the box bodies to be conformed are deposited, a main conveyor 12, along which the main treatment stations are arranged, a transfer conveyor 13 and an oven 14.
  • the transfer conveyor 13 is installed between the outlet of the main conveyor 12 and the outlet of the oven 14.
  • a feed turret 16 actuated sequentially is installed between the feed conveyor and the main conveyor.
  • a similar evacuation turret 18 is installed between the main conveyor and the transfer conveyor. All the elements described so far are of a known type.
  • the main conveyor is equipped with bases 20 each having a shape adapted to receive a box body.
  • the drive means of the feed turret and of the main conveyor are synchronized in such a way that each box body 21 taken by said feed turret is deposited on a base.
  • the bases 20 are made of magnetic material, which facilitates the installation of the box body of sheet steel.
  • synchronization is ensured by the fact that the feed turret 16 and the main conveyor 12 are driven by the same motor 22 via a gearbox 24 comprising two perpendicular output shafts, a shaft 25 for driving the turret and a shaft 26 for driving a drive wheel 27 of said main conveyor.
  • the box bodies 21 shown in the example described are more particularly intended to contain products intended to be sprayed in the form of an aerosol.
  • a box body conventionally consists of a cylindrical shell with circular section 26 of a bottom 27 crimped to this ferrule and a marquee 28 set at the top of the ferrule and adapted to receive a spraying device.
  • To personalize the packaging it is desired to conform such a box body in a particular way and in particular to modify the shape of the shell.
  • this is only an example of application of the principle of the invention, which can be adapted to give any desired shape to any type of box body.
  • a filling station 30 with at least one box body and a shaping station 32, downstream of said filling station and comprising at least one matrix 34 (FIG. 5) adapted to receive a like box body.
  • the filling station comprises a ramp 36 connected to a source of liquid 38 and making it possible to feed four box bodies simultaneously, while the shaping station is equipped with four dies 34.
  • the filling station is provided with means for introducing a desired quantity of liquid, for example water, into each of the box bodies.
  • Each matrix 34 is internally shaped according to the final shape which it is desired to give to the box body.
  • Each matrix is completed by a connection end piece 40 which can be adapted in leaktight manner to the opening of the corresponding box body and this end piece is connected to a source of pressurized fluid 42 which may be a liquid or even air.
  • connection end pieces 40 are integral with the same unit 41 which can move vertically and are connected to the source of pressurized fluid 42.
  • the liquid 43 introduced into the box bodies at the filling station 30 is the more often water but possibly this liquid can be added with a protective agent capable of forming a coating on the internal walls of the box body, after emptying and drying thereof.
  • the quantity of liquid 43 admitted into each can body at the filling station is determined according to the type of can body treated so that only a relatively small residual volume 44 remains in the vicinity of the upper opening of the box body.
  • each base 20 is pivotally mounted about a main axis of symmetry corresponding to that of the box body which comes to take place on said base.
  • each base 20 is mounted rotating by means of a ball bearing 47 and, during filling, it is coupled to a stepping motor 48 controlled by an electronic unit 49 itself. Even controlled by a sensor 50 arranged opposite the box body. This sensor is sensitive to a particularity of the box body, a longitudinal weld 51 in the present case. The electronic unit controls the motor 48 until said weld is in a well-defined position defined by the location of the sensor 50.
  • This prior orientation of the box body has several advantages.
  • the weld makes it possible to position the weld and therefore, if it has a significant excess thickness, to make it coincide with a corresponding longitudinal groove in the matrix.
  • the conformation that it is desired to give to the box body is not symmetrical with respect to its main axis, this prior orientation makes it possible to position the screen-printed decoration on the surface of the box body with such or such given relief by conformation.
  • the means for orienting the box bodies could be different and consist, for example, of a mechanism adapted to redirect each box body mounted on a non-pivoting base.
  • each matrix comprises two lateral half-shells 55 a , 55 b , actuated by jacks not shown, oriented horizontally.
  • the two half-shells are therefore mounted movable so that they can be separated from one another. They are provided, at their lower ends, with semi-circular recesses 56. More specifically, these recesses are shaped so that said shells can adapt to a base mentioned above by surrounding it.
  • the base 20 of the main conveyor therefore constitutes the bottom of the matrix.
  • connection end piece 40 fits at the end of an upper opening of the matrix so that pressurized fluid can be injected into the residual space left above the liquid filling the box body, thereby causing the deformation of said box body until it comes to marry the internal wall of the matrix 34, reproducing the desired conformation.
  • Holes 58 forming vents are made in the wall of one of the half-shells to allow the evacuation of the air trapped between the matrix and the box body, during this shaping phase.
  • each connection end piece 40 comprises a plug 60 sliding axially and provided with an application face 62 shaped to adapt in leaktight manner to the opening of the box body trapped in the matrix.
  • this application face has a shape substantially reproducing the impression of the marquee, so that said sliding plug 60 is applied over substantially the entire surface of the marquee of the box body.
  • the plug is drilled to allow the introduction of pressurized fluid.
  • the connection endpiece comprises means for forcibly applying this plug to the opening of the box body. More specifically, the connection end piece comprises a pressure chamber 64, a movable wall of which is at least partly formed by the upper end of the sliding plug, opposite to said application face of the latter.
  • This pressure chamber communicates with a source of pressurized fluid which is here the source of pressurized fluid 42 intended to cause the conformation of the can body.
  • the pressure chamber 64 is coaxial with and communicates with the pressurized fluid inlet pipe 65.
  • a flexible waterproof membrane 66 here made of elastomeric material, is interposed in said pressure chamber to separate the sliding plug 60 from the fluid admitted into this chamber. In this way, when the pressure is admitted into said residual space of the box body, this results at the same time a force exerted on the sliding plug 60 and therefore on the box body along its longitudinal axis. This action pushes the metal from the upper part of the shell 26 as it deforms radially outward to match the internal walls of the matrix.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Basic Packing Technique (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Claims (9)

  1. Anlage zur Formung des metallischen Körpers einer Dose (21) mit folgenden Merkmalen:
    ein Förderer (12);
    eine Füllstation (30) für mindestens einen Dosenkörper (21), die mit Mitteln (36, 38) versehen ist, eine gewünschte Menge an Flüssigkeit (43) in diesen einzuführen, und
    eine Formstation (32), die stromab von der Füllstation (30) angeordnet ist und mindestens eine Matrize (34) umfaßt, die zur Aufnahme des Dosenkörpers (21) eingerichtet und im Inneren nach der endgültigen gewünschten Form des Dosenkörpers (21) geformt ist,
    dadurch gekennzeichnet,
    daß der Förderer (12) sich mindestens zwischen einem Punkt stromauf von der Füllstation (30) und einer Stelle stromab von der Formstation (32) erstreckt und Sockel (20) aufweist, die am Förderer (12) befestigt sind und sich mit diesem bewegen, sowie jeweils eine Form zur Aufnahme eines Dosenkörpers (21) besitzen, und daß die oder jede Matrize (34) zwei seitliche Halbschalen (55a, 55b) umfaßt, die beweglich montiert sind, um voneinander entfernt werden zu können, und mit Hohlräumen (56) versehen sind, die in der Nähe ihrer unteren Enden angebracht sind, daß die Hohlräume (56) so geformt sind, daß die Halbschalen (55a, 55b) sich an einen Sockel (20) anpassen können, um ihn in der Weise zu umgeben, daß in der Form, in der die beiden Halbschalen (55a, 55b) aneinander anliegen, der Sockel (20) den Boden der Matrize (34) bildet und daß eine Verbindungszwinge (40), die in dichter Weise über der Öffnung des Dosenkörpers (21) anpaßbar ist und an eine Druckflüssigkeitsquelle (42) anschließbar ist, sich am Ende einer oberen Öffnung der Matrize (34) anpaßt.
  2. Anlage nach Anspruch 1,
    dadurch gekennzeichnet, daß Einrichtungen der Neuausrichtung des Dosenkörpers (21) vorgesehen sind.
  3. Anlage nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, daß die Sockel (20) aus magnetischem Material bestehen.
  4. Anlage nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß jeder Sockel (20) um eine Hauptsymmetrieachse schwenkbar montiert ist, die dem Dosenkörper entspricht, und daß eine Ausrichtestation (46) des Dosenkörpers (21) vorgesehen ist, der stromauf vor der Formstation (32) angeordnet ist und Mittel (47 bis 50) zum Drehenlassen des Sockels (20) umfaßt, um den Dosenkörper (21) in eine vorbestimmte Stellung überzuführen.
  5. Anlage nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß die Verbindungszwinge (40) einen axial verschiebbaren Stopfen (60) umfaßt, der mit einer Form-Anlagefläche (62) versehen ist, um sich abdichtend an die Öffnung des Dosenkörpers (21) anzupassen, die in der Matrize (34) eingeschlossen ist, daß der verschiebbare Stopfen (60) durchbohrt ist, um die Einführung von Druckflüssigkeit zu ermöglichen, und daß er Mittel (64, 66) aufweist, um den Stopfen mit Kraft auf die Öffnung des Dosenkörpers anzulegen.
  6. Anlage nach Anspruch 5,
    dadurch gekennzeichnet, daß die Verbindungszwingen (40) eine Druckkammer (64) umfaßt, deren bewegliche Wand mindestens teilweise durch ein Ende des verschiebbaren Stopfens (60) gebildet wird, und zwar entgegengesetzt zur Anlageseite (62) des Stopfens.
  7. Anlage nach Anspruch 6,
    dadurch gekennzeichnet, daß die Druckkammer (64) mit der Druckflüssigkeitsquelle (42) in Verbindung steht.
  8. Anlage nach Anspruch 7,
    dadurch gekennzeichnet, daß eine biegsame, dichte Membran (66), beispielsweise aus Elastomermaterial, in die Druckkammer (64) eingefügt ist, um den verschiebbaren Stopfen (60) von der in der Kammer (64) zugeführten Flüssigkeit zu trennen.
  9. Anlage nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, daß die Flüssigkeit (43) ein Schutzmittel umfaßt, mit dem eine Auskleidung auf den inneren Wänden des Dosenkörpers (21) gebildet werden kann.
EP92402965A 1991-11-19 1992-11-03 Verfahren und Anlage zum Formen der Hülse einer metallischen Dose Expired - Lifetime EP0543695B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9114213A FR2683750B1 (fr) 1991-11-19 1991-11-19 Procede pour conformer un corps de boite metallique et installation de conformation d'un tel corps de boite.
FR9114213 1991-11-19

Publications (2)

Publication Number Publication Date
EP0543695A1 EP0543695A1 (de) 1993-05-26
EP0543695B1 true EP0543695B1 (de) 1997-05-02

Family

ID=9419076

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92402965A Expired - Lifetime EP0543695B1 (de) 1991-11-19 1992-11-03 Verfahren und Anlage zum Formen der Hülse einer metallischen Dose

Country Status (6)

Country Link
US (1) US5275033A (de)
EP (1) EP0543695B1 (de)
DE (1) DE69219439T2 (de)
ES (1) ES2101064T3 (de)
FR (1) FR2683750B1 (de)
GR (1) GR3024221T3 (de)

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US5832766A (en) * 1996-07-15 1998-11-10 Crown Cork & Seal Technologies Corporation Systems and methods for making decorative shaped metal cans
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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
NL1014268C2 (nl) * 2000-02-02 2001-08-03 Corus Staal Bv Werkwijze en inrichting voor het vormgeven van een metalen busmantel, en een aldus vormgegeven metalen busmantel.
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HUE035020T2 (en) * 2010-02-23 2018-03-28 Ardagh Mp Group Netherlands Bv Process for blowing a preform into a metal bottle
EP2366472A1 (de) * 2010-02-23 2011-09-21 Impress Group B.V. Metallvorbehälter, blasgeformter Metallbehälter
WO2014153545A1 (en) * 2013-03-21 2014-09-25 Dayton Systems Group, Inc. Hydroformed can bottom expansion process and apparatus
DE102013114007A1 (de) * 2013-12-13 2015-06-18 Ball Europe Gmbh Verfahren zur Vorbehandlung eines aus einem Metallblech gefertigten Dosenkörpers
US10081045B2 (en) 2014-05-04 2018-09-25 Belvac Production Machinery Inc. Systems and methods for electromagnetic forming of containers
MX2017014373A (es) * 2015-05-26 2018-03-02 Novelis Inc Proceso de formacion por soplado a alta velocidad para formar recipientes de aluminio usando aleaciones 3xxx con alto contenido de reciclado.

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Also Published As

Publication number Publication date
ES2101064T3 (es) 1997-07-01
DE69219439T2 (de) 1997-11-13
EP0543695A1 (de) 1993-05-26
FR2683750B1 (fr) 1995-09-01
FR2683750A1 (fr) 1993-05-21
GR3024221T3 (en) 1997-10-31
US5275033A (en) 1994-01-04
DE69219439D1 (de) 1997-06-05

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