EP0379875A2 - Device for manufacturing a sealing diaphragm - Google Patents

Device for manufacturing a sealing diaphragm Download PDF

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Publication number
EP0379875A2
EP0379875A2 EP90100257A EP90100257A EP0379875A2 EP 0379875 A2 EP0379875 A2 EP 0379875A2 EP 90100257 A EP90100257 A EP 90100257A EP 90100257 A EP90100257 A EP 90100257A EP 0379875 A2 EP0379875 A2 EP 0379875A2
Authority
EP
European Patent Office
Prior art keywords
membrane
cutting ring
ring knife
segments
cutting
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Withdrawn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
EP90100257A
Other languages
German (de)
French (fr)
Other versions
EP0379875A3 (en
Inventor
Robert L. Markhorst
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.)
MARKHORST HOLLAND BV
Original Assignee
MARKHORST HOLLAND BV
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 MARKHORST HOLLAND BV filed Critical MARKHORST HOLLAND BV
Publication of EP0379875A2 publication Critical patent/EP0379875A2/en
Publication of EP0379875A3 publication Critical patent/EP0379875A3/en
Withdrawn legal-status Critical Current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
    • B21D24/00—Special deep-drawing arrangements in, or in connection with, presses
    • B21D24/16—Additional equipment in association with the tools, e.g. for shearing, for trimming
    • 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
    • B21D51/44—Making closures, e.g. caps

Definitions

  • the invention relates to a device for producing a closure membrane according to the preamble of the claim.
  • DE-37 00 241 C1 describes a device according to known the preamble of claim, wherein the device is essentially formed by a cutting ring knife, which consists of spring steel and is formed rising from the cutting edge to the inner opening. If a pressure stamp is moved downward in this known device, the actual cutting edge of the cutting ring knife reaches the outside and into the closure membrane. Depending on the depth of the movement of the plunger or the outward movement of the cutting ring knife, the closure membrane can be almost completely severed in this area.
  • the invention has for its object to provide a cutting ring knife, with which the machining of a polygonal outline diaphragm is possible.
  • a cutting ring knife that consists of several individual segments. These individual segments can be moved independently of one another and are forced outwards via inclined, interacting contact surfaces and thus penetrate into the wall of the closure membrane.
  • a fold holder 2 which has a cutting edge 3 which interacts with a corresponding cutting edge 4 of a counter tool 5.
  • a closure membrane 6 is shown schematically, which is separated by the cooperating cutting edges 3 and 4 and is deformed during the further movement of the fold holder 2.
  • the fold holder 2 arrives at an ejector 7 during its downward movement and clamps the diaphragm 6 together with this ejector 7.
  • the ejector 7 is mounted elastically, for example, against the action of return springs 8.
  • a stationary stamp 9 the stamp hood 10 of which has a counter wall 11 which is inclined downwards and outwards.
  • the inner sides of segments a , b , c and d of a cutting ring knife 1 rest on the wall surfaces of this counter wall 11, these inner sides of the cutting ring knife 1 having correspondingly designed wall surfaces.
  • An elastic belt 19 is placed around the segments a , b , c and d of the cutting ring knife 1.
  • a drawing die 12 is provided above the die cover 10.
  • the ejectors 7 work together with a guide ring 14, which is just if resiliently mounted against the action of return springs 16.
  • the drawing punch 12 presses on the upper edge of the segments a , b , c and d of the cutting ring knife 1 and, due to the inclination of the surfaces of both the segments a , b , c and d and the stamp hood 10, the cutting ring knife segments become a , b , c and d moved down and out.
  • the actual cutting edge 15 of the cutting ring knife only penetrates to a certain extent into the wall of the closure membrane, so that a predetermined crack is created here, which is then inserted when the membrane is inserted into the actual can provided stamp tears.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closing Of Containers (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Rigid Containers With Two Or More Constituent Elements (AREA)

Abstract

The invention relates to a device for manufacturing a sealing diaphragm using an annular cutting blade, the annular cutting blade being made up of a plurality of segments and having, on its inner circumference, a wall which is inclined relative to the vertical and interacts with a counterwall which is inclined relative to the vertical and forms part of a fixed die. During the movement of a blank holder for the purpose of sealing the diaphragm shape, the annular cutting blade segments can be moved downwards and thus outwards. <IMAGE>

Description

Die Erfindung bezieht sich auf eine Vorrichtung zur Herstellung einer Verschlußmembrane gemäß dem Ober­begriff des Patentanspruches.The invention relates to a device for producing a closure membrane according to the preamble of the claim.

Aus der DE-PS 2 26 907 ist es bei unrunden Dosen be­kannt, ein aus mehreren Segmenten zusammengesetztes Schneidringmesser einzusetzen. Diese Messersegmente sind auf Schlitten angeordnet, die in entsprechenden Führungen gleiten und zusammen mit einem entspre­chenden feststehenden Gegenmesser den Schnitt der Dosenränder bewirken. Diese für Blechdosen bestimmte Einrichtung ist für die dünnen Verschlußmembranen nicht geeignet.From DE-PS 2 26 907 it is known for non-circular cans to use a cutting ring knife composed of several segments. These knife segments are arranged on slides which slide in corresponding guides and, together with a corresponding fixed counter knife, cut the edges of the can. This device intended for tin cans is not suitable for the thin sealing membranes.

Aus der DE-A-32 12 275 ist eine Maschine zum Her­stellen von Verpackungsdosen aus Blech bekannt, bei welchem ein Dosenunterteil durch Schneidelemente von innen heraus beschnitten wird, wobei diese Schneid­elemente durch Betätigen konisch ausgebildeter Teile bewegt werden. Auch diese bekannte Vorrichtung wird in Verbindung mit Verpackungsdosen aus Blech einge­setzt.From DE-A-32 12 275 a machine for producing packaging cans from sheet metal is known, in which a lower part of a can is trimmed from the inside out by cutting elements, these cutting elements being moved by actuating conically shaped parts. This known device is also used in connection with packaging cans made of sheet metal.

Aus der DE-37 00 241 C1 ist eine Vorrichtung gemäß dem Oberbegriff des Patentanspruches bekannt, wobei die Vorrichtung im wesentlichen durch ein Schneid­ringmesser gebildet wird, das aus Federstahl besteht und von der Schneidkante zur Innenöffnung ansteigend ausgebildet ist. Wird bei dieser bekannten Einrich­tung ein Druckstempel nach unten bewegt, gelangt die eigentliche Schneidkante des Schneidringmessers nach außen und in die Verschlußmembrane. Je nach Tiefe der Bewegung des Stempels bzw. der nach außen ge­richteten Bewegung des Schneidringmessers kann eine fast vollständige Durchtrennung der Verschlußmem­brane in diesem Bereich erfolgen.DE-37 00 241 C1 describes a device according to known the preamble of claim, wherein the device is essentially formed by a cutting ring knife, which consists of spring steel and is formed rising from the cutting edge to the inner opening. If a pressure stamp is moved downward in this known device, the actual cutting edge of the cutting ring knife reaches the outside and into the closure membrane. Depending on the depth of the movement of the plunger or the outward movement of the cutting ring knife, the closure membrane can be almost completely severed in this area.

Die Anordnung des derart ausgebildeten Schneidring­messers für polygonale Dosen ist schwierig.The arrangement of the cutting ring knife thus designed for polygonal cans is difficult.

Der Erfindung liegt die Aufgabe zugrunde, ein Schneidringmesser zu schaffen, mit dem auch die Be­arbeitung von eine polygonale Umrißform aufweisenden Verschlußmembranen möglich ist.The invention has for its object to provide a cutting ring knife, with which the machining of a polygonal outline diaphragm is possible.

Diese Aufgabe wird durch die im Hauptanspruch ange­gebene Erfindung gelöst.This object is achieved by the invention specified in the main claim.

Mit anderen Worten ausgedrückt, wird ein Schneid­ringmesser vorgeschlagen, das aus mehreren Einzel ­segmenten besteht. Diese Einzelsegmente sind unab­hängig voneinander bewegbar und werden über schräge, miteinander zusammenwirkende Anlaufflächen nach außen gezwungen und dringen dadurch in die Wandung der Verschlußmembrane ein.In other words, a cutting ring knife is proposed that consists of several individual segments. These individual segments can be moved independently of one another and are forced outwards via inclined, interacting contact surfaces and thus penetrate into the wall of the closure membrane.

Ein Ausführungsbeispiel der Erfindung wird nachfol­gend anhand der Zeichnung erläutert. Die Zeichnung zeigt dabei in

  • Fig. 1 eine Ziehvorrichtung für eine Ver­schlußmembrane mit integrierter Schneidvorrichtung für die Membrane im Ausgangszustand, in
  • Fig. 2 die Vorrichtung nach Fig. 1 im soge­nannten Schneidzustand für die Mem­brane und in
  • Fig. 3 eine schematische Draufsicht auf ein Schneidringmesser.
An embodiment of the invention is explained below with reference to the drawing. The drawing shows in
  • Fig. 1 is a pulling device for a closure membrane with an integrated cutting device for the membrane in the initial state, in
  • Fig. 2 shows the device of FIG. 1 in the so-called cutting state for the membrane and in
  • Fig. 3 is a schematic plan view of a cutting ring knife.

In der Zeichnung ist ein Faltenhalter 2 dargestellt, der eine Schneidkante 3 aufweist, die mit einer ent­sprechenden Schneidkante 4 eines Gegenwerkzeuges 5 zusammenwirkt. Eine Verschlußmembrane 6 ist schema­tisch dargestellt, die durch die zusammenwirkenden Schneidkanten 3 und 4 abgetrennt und bei der Weiter­bewegung des Faltenhalters 2 verformt wird. Der Fal­tenhalter 2 gelangt bei seiner Abwärtsbewegung an einen Auswerfer 7 und klemmt mit diesem Auswerfer 7 zusammen die Membrane 6 ein. Der Auswerfer 7 ist beispielsweise gegen die Wirkung von Rückstellfedern 8 elastisch gelagert.In the drawing, a fold holder 2 is shown which has a cutting edge 3 which interacts with a corresponding cutting edge 4 of a counter tool 5. A closure membrane 6 is shown schematically, which is separated by the cooperating cutting edges 3 and 4 and is deformed during the further movement of the fold holder 2. The fold holder 2 arrives at an ejector 7 during its downward movement and clamps the diaphragm 6 together with this ejector 7. The ejector 7 is mounted elastically, for example, against the action of return springs 8.

Im Inneren dieses Werkzeuges ist ein ortsfester Stempel 9 vorgesehen, dessen Stempelhaube 10 eine von oben nach unten und außen geneigte Gegenwand 11 aufweist. An den Wandflächen dieser Gegenwand 11 liegen die Innenseiten von Segmenten a, b, c und d eines Schneidringmessers 1 an, wobei diese Innen­seiten des Schneidringmessers 1 entsprechend ausge­bildete Wandflächen aufweisen. Um die Segmente a, b, c und d des Schneidringmessers 1 ist ein elastischer Gürtel 19 gelegt. Oberhalb der Stempelhaube 10 ist ein Ziehstempel 12 vorgesehen. Die Auswerfer 7 ar­beiten mit einem Führungsring 14 zusammen, der eben­ falls gegen die Wirkung von Rückstellfedern 16 elastisch gelagert ist.Provided in the interior of this tool is a stationary stamp 9, the stamp hood 10 of which has a counter wall 11 which is inclined downwards and outwards. The inner sides of segments a , b , c and d of a cutting ring knife 1 rest on the wall surfaces of this counter wall 11, these inner sides of the cutting ring knife 1 having correspondingly designed wall surfaces. An elastic belt 19 is placed around the segments a , b , c and d of the cutting ring knife 1. A drawing die 12 is provided above the die cover 10. The ejectors 7 work together with a guide ring 14, which is just if resiliently mounted against the action of return springs 16.

Vergleicht man die Fig. 1 und 2, ist erkennbar, daß bei einer Abwärtsbewegung des Faltenhalters 2 zuerst die auf der Oberkante 17 des Gegenwerkzeuges 5 und des Ziehstempels 12 sowie des Auswerfers 7 auflie­gende Membrane 6 geschnitten und zwischen Falten­halter 2 und Auswerfer 7 eingeklemmt wird. Durch die Weiterbewegung des Faltenhalters 2 erfolgt eine Ver­formung der Membrane 6 zu einem angestrebten topf­förmigen Gebilde. Bei dieser Weiterbewegung des Fal­tenhalters 2 drückt der Ziehstempel 12 auf die Ober­kante der Segmente a, b, c und d des Schneidring­messers 1 und aufgrund der Schräge der Flächen so­wohl der Segmente a, b, c und d als auch der Stem­pelhaube 10 werden die Schneidringmessersegmente a, b, c und d nach unten und außen bewegt. In Abhängig­keit der Größe dieser Bewegung ist es möglich, daß die eigentliche Schneidkante 15 des Schneidringmes­sers nur um ein gewisses Maß in die Wandung der Ver­schlußmembrane eindringt, so daß hier eine Sollriß­stelle geschaffen wird, die bei Einsetzen der Mem­brane in die eigentliche Dose durch den dann dabei vorgesehenen Stempel reißt.Comparing FIGS. 1 and 2, it can be seen that when the fold holder 2 moves downward, the membrane 6 lying on the upper edge 17 of the counter tool 5 and the drawing punch 12 and the ejector 7 is cut and clamped between the fold holder 2 and the ejector 7. Due to the further movement of the fold holder 2, the membrane 6 is deformed into a desired cup-shaped structure. During this further movement of the fold holder 2, the drawing punch 12 presses on the upper edge of the segments a , b , c and d of the cutting ring knife 1 and, due to the inclination of the surfaces of both the segments a , b , c and d and the stamp hood 10, the cutting ring knife segments become a , b , c and d moved down and out. Depending on the size of this movement, it is possible that the actual cutting edge 15 of the cutting ring knife only penetrates to a certain extent into the wall of the closure membrane, so that a predetermined crack is created here, which is then inserted when the membrane is inserted into the actual can provided stamp tears.

Claims (2)

1. Vorrichtung zur Herstellung einer tiefge­zogenen Verschlußmembrane für Dosen, wobei die Verschlußmembrane ein in den Dosenrumpf eingeschobenes Dosenüberdeckungsteil und einen Membrankragen aufweist, der den Dosen­rand übergreift, wobei während der Formung der topfförmigen Verschlußmembrane vom Inneren her der Membrankragen vom Dosenüber­deckungsteil mittels eines an seinem Außen­umfang eine Schneidkante aufweisenden Schneidringmessers fast vollständig getrennt wird und bei Einsetzen der Verschlußmembrane in die Dose eine vollständige Trennung von Membrankragen und Dosenüberdeckungsteil er­folgt, gekennzeichnet durch ein aus mehreren Segmenten (a, b, c, d) zusammengesetztes Schneidringmesser (1) , das auf seinem Innen­umfang eine gegenüber der Vertikalen geneig­te Wand aufweist, die mit einer gegenüber der Vertikalen geneigten Gegenwand (11) eines ortsfesten Stempels (9) zusammenwirkt, wobei bei der Bewegung eines Faltenhalters (2) die Schneidringmessersegmente (a, b, c, d) nach unten bewegbar sind.1. A device for producing a deep-drawn sealing membrane for cans, the sealing membrane having a can covering part inserted into the can body and a membrane collar which engages over the edge of the can, the membrane collar from the inside of the can covering part by means of an on its outer circumference during the formation of the cup-shaped sealing membrane Cutting edge having the cutting ring knife is almost completely separated and when inserting the sealing membrane into the can a complete separation of the membrane collar and can covering part takes place, characterized by a cutting ring knife (1) composed of several segments (a, b, c, d), which has an inner circumference Wall inclined with respect to the vertical, which cooperates with a counter wall (11) of a stationary stamp (9) inclined with respect to the vertical, the cutting ring knife segments (a, b, c, d) moving a fold holder (2) are movable downwards. 2. Vorrichtung nach Anspruch 1, dadurch gekenn­zeichnet, daß die Schneidringmessersegmente ( a, b, c, d) an ihrer Außenseite von einem elastischen Gürtel (19) umgeben sind.2. Device according to claim 1, characterized in that the cutting ring knife segments (a, b, c, d) are surrounded on their outside by an elastic belt (19).
EP19900100257 1989-01-21 1990-01-08 Device for manufacturing a sealing diaphragm Withdrawn EP0379875A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19893901703 DE3901703C1 (en) 1989-01-21 1989-01-21
DE3901703 1989-01-21

Publications (2)

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EP0379875A2 true EP0379875A2 (en) 1990-08-01
EP0379875A3 EP0379875A3 (en) 1991-06-12

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EP19900100257 Withdrawn EP0379875A3 (en) 1989-01-21 1990-01-08 Device for manufacturing a sealing diaphragm

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DE (1) DE3901703C1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19845186A1 (en) * 1998-10-01 2000-04-13 Binder Technologie Ag Gams Fluid form
DE102007054825A1 (en) 2007-11-16 2009-05-20 Audi Ag Tool for trimming and cutting flat workpieces as well as cutting and depositing methods

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE226907C (en) *
DE1901272A1 (en) * 1969-01-11 1970-08-13 Benz & Hilgers Gmbh Device for the production of prismatic soft packs
FR2125149A1 (en) * 1971-02-15 1972-09-29 Gallay Futs Metalliques
GB2021009A (en) * 1978-05-23 1979-11-28 Usm Corp Making container closure members of the easyopen type
DE3212275A1 (en) * 1981-04-04 1982-10-21 Staehle GmbH, 7000 Stuttgart Method and machine for the production of sheet-metal packaging cans with a folded-over inner rim at the lid and at the bottom part of the can
DE3700241C1 (en) * 1987-01-07 1987-11-12 Machf Markhorst B V Method and device for producing a sealing membrane
EP0247986A1 (en) * 1986-05-26 1987-12-02 Akerlund &amp; Rausing Licens Aktiebolag Expandable type lid welding piston

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE226907C (en) *
DE1901272A1 (en) * 1969-01-11 1970-08-13 Benz & Hilgers Gmbh Device for the production of prismatic soft packs
FR2125149A1 (en) * 1971-02-15 1972-09-29 Gallay Futs Metalliques
GB2021009A (en) * 1978-05-23 1979-11-28 Usm Corp Making container closure members of the easyopen type
DE3212275A1 (en) * 1981-04-04 1982-10-21 Staehle GmbH, 7000 Stuttgart Method and machine for the production of sheet-metal packaging cans with a folded-over inner rim at the lid and at the bottom part of the can
EP0247986A1 (en) * 1986-05-26 1987-12-02 Akerlund &amp; Rausing Licens Aktiebolag Expandable type lid welding piston
DE3700241C1 (en) * 1987-01-07 1987-11-12 Machf Markhorst B V Method and device for producing a sealing membrane

Also Published As

Publication number Publication date
DE3901703C1 (en) 1989-08-24
EP0379875A3 (en) 1991-06-12

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