DE19909998A1 - Light, sandwich structured material production comprises joining outside layers of metal or plastic with point-, linear- or circular-shaped cross pieces produced from viscous flows of adhesive or molten metal between them - Google Patents

Light, sandwich structured material production comprises joining outside layers of metal or plastic with point-, linear- or circular-shaped cross pieces produced from viscous flows of adhesive or molten metal between them

Info

Publication number
DE19909998A1
DE19909998A1 DE19909998A DE19909998A DE19909998A1 DE 19909998 A1 DE19909998 A1 DE 19909998A1 DE 19909998 A DE19909998 A DE 19909998A DE 19909998 A DE19909998 A DE 19909998A DE 19909998 A1 DE19909998 A1 DE 19909998A1
Authority
DE
Germany
Prior art keywords
metal
adhesive
plastic
circular
point
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Withdrawn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
DE19909998A
Other languages
German (de)
Inventor
Volker Hellinger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19909998A priority Critical patent/DE19909998A1/en
Publication of DE19909998A1 publication Critical patent/DE19909998A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D24/00—Producing articles with hollow walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B32B7/14—Interconnection of layers using interposed adhesives or interposed materials with bonding properties applied in spaced arrangements, e.g. in stripes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/043—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B32B37/1292—Application of adhesive selectively, e.g. in stripes, in patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2607/00—Walls, panels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

Production of light, sandwich structured materials comprises joining the outside layers of metal or plastic with point-, linear- or circular-shaped cross pieces produced from viscous flows of adhesive or molten metal between them.

Description

Anwendungsgebietfield of use

Die Erfindung betrifft ein Verfahren entsprechend dem Oberbegriff des Anspruchs 1.The invention relates to a method according to the preamble of claim 1.

Stand der TechnikState of the art

Strenge Gesetzesauflagen und umweltpolitische Forderungen rücken das Thema Leichtbau in vielen Bereichen der Technik immer weiter in den Vordergrund. Eine Möglichkeit, leichte Strukturen herzustellen ist die Herstellung von Sandwichstruktu­ ren bestehend aus mehreren Blechlagen verbunden durch eine Zwischenschicht. Dieser Schichtaufbau bewirkt eine Vergrößerung des Flächenträgheitsmomentes und führt zu einer wesentlichen Verbesserung der Biege- und Torsionssteifigkeit des Bauteils bei gleichem oder geringerem Bauteilgewicht gegenüber einer dickeren, einlagigen Blechstruktur mit gleichen Eigenschaften.Strict legal requirements and environmental policy requirements are the subject Lightweight construction is becoming increasingly important in many areas of technology. A The possibility of producing light structures is the production of sandwich structures Ren consisting of several sheet layers connected by an intermediate layer. This layer structure causes an increase in the area moment of inertia and leads to a significant improvement in the bending and torsional rigidity of the Component with the same or lower component weight compared to a thicker, single-layer sheet metal structure with the same properties.

Nachteile des Standes der TechnikDisadvantages of the prior art

Zur Herstellung von Sandwichstruktur existieren die verschiedensten Verfahren, die häufig nur sehr unwirtschaftlich sind, da sie viele unterschiedliche Fertigungsverfah­ ren, wie z. B. Schweißen, Walzen, Tiefziehen und Biegen miteinander verknüpfen müssen. Es entstehen meist ebene Sandwichbleche, die sich nach der Herstellung z. T. gar nicht oder nur sehr schlecht in die gewünschte Bauteilform zum Einbau in eine Konstruktion bringen lassen. Falls eine nachträgliche Umformung möglich ist, können sich die Eigenschaften des Sandwichbleches durch eingebrachte Verzerrun­ gen stark verändern, eine Reaktion auf äußere Lasteinflüsse kann nicht mehr sicher vorhergesagt werden. Abb. 1 zeigt verschiedene, schon exi­ stierende Möglichkeiten zur Herstellung von Sandwichstrukturen. Die Abbildung er­ hebt jedoch keinen Anspruch auf Vollständigkeit. There are a wide variety of processes for the production of sandwich structures, which are often only very uneconomical, since they have many different manufacturing processes, such as, for. B. welding, rolling, deep drawing and bending. There are usually flat sandwich sheets, which z. Sometimes not at all or only very poorly in the desired component shape for installation in a construction. If subsequent forming is possible, the properties of the sandwich sheet can change significantly due to the distortions introduced, and a reaction to external load influences can no longer be reliably predicted. Fig. 1 shows different, already existing options for the production of sandwich structures. However, the illustration does not claim to be complete.

Aufgabe der ErfindungObject of the invention

Aufgabe der Erfindung ist es, ein kostengünstiges Verfahren zur Herstellung von Sandwichstrukturen bereitzustellen, das es erlaubt, eine Vielzahl von Bauteilgeome­ trien für individuelle Einsatzfälle herzustellen, ohne daß die Tragfähigkeit der Sand­ wichstruktur durch den Umformprozeß beeinflußt wird.The object of the invention is to provide an inexpensive method for producing To provide sandwich structures that allow a variety of component geometries Manufacture trien for individual applications, without the load capacity of the sand Which structure is influenced by the forming process.

Lösung der AufgabeSolution of the task

Die Bleche oder Platten (im weiteren "Deckschicht" genannt) werden ohne die Ver­ bindung durch eine Zwischenschicht einzeln in die gewünschte Endgeometrie für den Einbau in eine Konstruktion gebracht. Anschließend wird punkt-, linien- oder kreis­ förmig ein aushärtbarer, viskoser Klebstoff (z. B. Harz, ö. ä.) oder ein bis zur Schmelztemperatur erwärmtes Metall auf die Deckschicht 1 aufgetragen und derge­ stalt mit der Deckschicht 2 verbunden, daß sich Verbindungsstege aus Klebstoff oder Metall zwischen den Deckschichten ergeben. Verfahren zur Ausbildung dieser Ver­ bindungsstege werden unter Kapitel B, "Beispielbeschreibung einer Patentanmel­ dung" gegeben.The sheets or plates (hereinafter referred to as "cover layer") are individually brought into the desired end geometry for installation in a construction without the connection through an intermediate layer. Subsequently, a curable, viscous adhesive (z. B. Resin, etc.) or a metal heated to the melting temperature is applied to the top layer 1 in a dot, line or circle shape and connected to the top layer 2 in such a way that Result in connecting webs made of adhesive or metal between the cover layers. Procedures for the formation of these connecting webs are given in Chapter B, "Example description of a patent application".

Vorteile der ErfindungAdvantages of the invention

Das Verfahren zur Herstellung der Sandwichstrukturen mittels Klebstoff- oder Metall­ stegen ist gegenüber anderen Verfahren kostengünstig und ermöglicht eine flexible und schnelle Fertigung verschiedenster Bauteilgeometrien. Durch die Fertigung der Bleche vor der Verbindung mittels der Klebstoff- oder Metallstege wird eine Schädi­ gung der Zwischenschicht durch eine Umformung ausgeschlossen und das Lastver­ halten des Bauteils kann exakt vorhergesagt werden. Durch die Variation der Kleb­ stoffeigenschaften kann die Sandwichstruktur an unterschiedlichste Anwendungsfälle angepaßt werden. Bei elastischen Stegen wirkt die Konstruktion z. B. schwingungs­ dämpfend, bei unelastischen Stegen kann die Konstruktion große Kräfte aufnehmen. The process for producing the sandwich structures using adhesive or metal Compared to other methods, web is inexpensive and enables flexible and fast production of various component geometries. By manufacturing the Sheet metal before the connection by means of the adhesive or metal bars becomes a damage exclusion of the intermediate layer by forming and the load ver holding the component can be predicted exactly. By varying the adhesive the sandwich structure can be used for a wide variety of applications be adjusted. With elastic webs, the construction works e.g. B. vibration cushioning, with inelastic webs the construction can absorb large forces.  

Beschreibung von AusführungsbeispielenDescription of exemplary embodiments

Um eine Sandwichstruktur nach dem oben beschriebenen Verfahren herzustellen, geht man in mehreren Schritten vor:In order to produce a sandwich structure using the method described above, one proceeds in several steps:

Nach der Fertigung der Deckschichten durch Ur- oder Umformoperationen und Auf­ bringung der Klebstoffpunkte oder -linien auf die untere Deckschicht 1 gibt es ver­ schiedene Möglichkeiten, die Verbindungsstege zwischen den Deckschichten herzu­ stellen, von denen zwei exemplarisch vorgestellt werden sollen, um das Verfahren besser erläutern zu können:
After the production of the cover layers by primary or forming operations and application of the adhesive points or lines to the lower cover layer 1, there are various options for producing the connecting webs between the cover layers, two of which are to be presented by way of example in order to better explain the process to be able to:

  • a) Die obere Deckschicht 2 wird aufgelegt, bis es zum Kontakt zwischen der Deck­ schicht 2 und dem viskosen Klebstoff kommt, anschließend wird das Blech 2 wie­ der weggezogen und in einem definierten Abstand zum unteren Blech fixiert, so daß sich zwischen den Blechen Stege aus dem viskosen Klebstoff bilden. Abb. 2 verdeutlicht das Verfahren.a) The upper cover layer 2 is placed until there is contact between the cover layer 2 and the viscous adhesive, then the sheet 2 is pulled away like that and fixed at a defined distance from the lower sheet, so that webs between the sheets form the viscous adhesive. Fig. 2 illustrates the process.
  • b) Das obere Blech wird in einen definierten Abstand zum unteren Blech gebracht, ohne daß es den viskosen Klebstoff berührt. Die Anordnung wird um 180° gedreht und der viskose Klebstoff fließt auf die Oberfläche des Bleches 2. Abb. 3 ver­ deutlicht das Verfahren.b) The upper plate is brought into a defined distance from the lower plate without touching the viscous adhesive. The arrangement is rotated by 180 ° and the viscous adhesive flows onto the surface of the sheet 2 . Fig. 3 illustrates the process.

Andere Möglichkeiten wurden in diesem Zusammenhang nicht aufgeführt, sollen aber trotzdem geschützt werden. Die Aushärtung des Klebstoffes kann je nach Visko­ sität und Aushärtedauer ohne zusätzlichen Aufwand durch einfache Lagerung ge­ schehen oder in einer Dreh-Apparatur, die den Klebstoff immer bewegt, um ein be­ vorzugtes Fließen in eine Richtung durch die Erdanziehungskraft zu verhindern. No other options have been listed in this context but still be protected. Depending on the viscosity, the adhesive can harden tity and curing time without additional effort due to simple storage or in a rotating device that always moves the adhesive to a be prevent preferential flow in one direction by gravity.  

Mit Hilfe der oben beschriebenen Verfahren wurden bereits einige Werkstücke her­ gestellt. Abb. 4 zeigt, daß sich verschiedenste Werkstückgeometrien mit Hilfe dieser Verfahren einfach und kostengünstig herstellen lassen.Some workpieces have already been produced using the above-described methods. Fig. 4 shows that a wide variety of workpiece geometries can be produced easily and inexpensively using these processes.

Claims (5)

1. Verfahren zur Herstellung von leichten Sandwichstrukturen, dadurch gekennzeichnet, daß die Deckschichten (Metall oder Kunststoff) durch punkt-, linien- oder kreisförmige Verbindungsstege aus elastisch oder unelastisch aushärtendem Klebstoff oder erstarrendem Metall verbunden wer­ den, die sich durch viskoses Fließen des Klebstoffes oder des erwärmten Metalls zwischen beiden Deckschichten bilden.1. A process for the production of light sandwich structures, characterized in that the cover layers (metal or plastic) by point, line or circular connecting webs made of elastically or inelastic curing adhesive or solidifying metal who who connected by viscous flow of the adhesive or of the heated metal between the two cover layers. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Verbindungsstege durch Zusammenfüh­ ren der Deckschichten und anschließendes Auseinanderziehen gebildet wer­ den (Abb. 2).2. The method according to claim 1, characterized in that the connecting webs are formed by bringing together the outer layers and then pulling them apart ( Fig. 2). 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß sich die Verbindungsstege durch Wenden der Deckschichten und Fließen des Klebstoffes oder des erwärmten Metalls zwi­ schen beiden Deckschichten bilden (Abb. 3).3. The method according to claim 1, characterized in that the connecting webs are formed by turning the cover layers and flowing the adhesive or the heated metal between the two cover layers ( Fig. 3). 4. Verfahren nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß die Deckschichten vor dem Fügen durch die Verbindungsstege in beliebige Formen gebracht werden können.4. The method according to any one of the preceding claims, characterized in that the cover layers before joining by the Connecting webs can be brought into any shape. 5. Verfahren nach einem der vorherigen Ansprüche, dadurch gekennzeichnet, daß in den entstehenden Hohlraum zwischen den Verbindungsstegen Füllmaterial eingefüllt werden kann.5. The method according to any one of the preceding claims, characterized in that in the resulting cavity between the Crosspieces filler material can be filled.
DE19909998A 1999-03-06 1999-03-06 Light, sandwich structured material production comprises joining outside layers of metal or plastic with point-, linear- or circular-shaped cross pieces produced from viscous flows of adhesive or molten metal between them Withdrawn DE19909998A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19909998A DE19909998A1 (en) 1999-03-06 1999-03-06 Light, sandwich structured material production comprises joining outside layers of metal or plastic with point-, linear- or circular-shaped cross pieces produced from viscous flows of adhesive or molten metal between them

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DE19909998A DE19909998A1 (en) 1999-03-06 1999-03-06 Light, sandwich structured material production comprises joining outside layers of metal or plastic with point-, linear- or circular-shaped cross pieces produced from viscous flows of adhesive or molten metal between them

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2065186A1 (en) * 2007-11-30 2009-06-03 Homag Holzbearbeitungssysteme AG Method for manufacturing a lightweight construction sheet and device for executing the method
DE102010034719A1 (en) * 2010-08-18 2012-02-23 Deutsches Zentrum für Luft- und Raumfahrt e.V. Producing foil element, useful e.g. for tactile sensor, comprises providing elastically deformable first layer, applying first spaces, providing elastically deformable second layer, joining second surface to first spaces and curing
US8534730B2 (en) 2010-08-18 2013-09-17 Deutsches Zentrum Fur Luft- Und Raumfahrt E.V. (Dlr E.V.) Areal gripper
CN109644574A (en) * 2016-10-03 2019-04-16 惠普发展公司，有限责任合伙企业 Multilayer package

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141715A1 (en) * 1981-10-21 1983-04-28 Alfred 8919 Schondorf Wiehofsky Hollow profile in the form of a panel
DE3145949A1 (en) * 1981-11-20 1983-06-01 Bayerische Motoren Werke AG, 8000 München METHOD AND DEVICE FOR BONDING TWO COMPONENT COMPONENTS ON A LARGE AREA
DE4105949A1 (en) * 1991-02-26 1992-08-27 Uwe Dr Skurnia Bonded composite suitable for recycling - has insol. surface sheets bonded together with glue-line contg. pattern of spaces through which solvent can pass to dissolve it
AT401363B (en) * 1994-11-14 1996-08-26 Sommerhuber Franz Composite plate made of lightweight metal in a lightweight construction

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3141715A1 (en) * 1981-10-21 1983-04-28 Alfred 8919 Schondorf Wiehofsky Hollow profile in the form of a panel
DE3145949A1 (en) * 1981-11-20 1983-06-01 Bayerische Motoren Werke AG, 8000 München METHOD AND DEVICE FOR BONDING TWO COMPONENT COMPONENTS ON A LARGE AREA
DE4105949A1 (en) * 1991-02-26 1992-08-27 Uwe Dr Skurnia Bonded composite suitable for recycling - has insol. surface sheets bonded together with glue-line contg. pattern of spaces through which solvent can pass to dissolve it
AT401363B (en) * 1994-11-14 1996-08-26 Sommerhuber Franz Composite plate made of lightweight metal in a lightweight construction

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2065186A1 (en) * 2007-11-30 2009-06-03 Homag Holzbearbeitungssysteme AG Method for manufacturing a lightweight construction sheet and device for executing the method
DE102010034719A1 (en) * 2010-08-18 2012-02-23 Deutsches Zentrum für Luft- und Raumfahrt e.V. Producing foil element, useful e.g. for tactile sensor, comprises providing elastically deformable first layer, applying first spaces, providing elastically deformable second layer, joining second surface to first spaces and curing
US8534730B2 (en) 2010-08-18 2013-09-17 Deutsches Zentrum Fur Luft- Und Raumfahrt E.V. (Dlr E.V.) Areal gripper
DE102010034719B4 (en) * 2010-08-18 2014-02-27 Deutsches Zentrum für Luft- und Raumfahrt e.V. Elastic deformable film element, process for its preparation and its use
CN109644574A (en) * 2016-10-03 2019-04-16 惠普发展公司，有限责任合伙企业 Multilayer package
EP3488669A4 (en) * 2016-10-03 2020-02-12 Hewlett-Packard Development Company, L.P. Multilayer housings
US11259423B2 (en) 2016-10-03 2022-02-22 Hewlett-Packard Development Company, L.P. Multilayer housings

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