DE2704734C3 - Method for producing a mold for a plate - Google Patents

Method for producing a mold for a plate

Info

Publication number
DE2704734C3
DE2704734C3 DE19772704734 DE2704734A DE2704734C3 DE 2704734 C3 DE2704734 C3 DE 2704734C3 DE 19772704734 DE19772704734 DE 19772704734 DE 2704734 A DE2704734 A DE 2704734A DE 2704734 C3 DE2704734 C3 DE 2704734C3
Authority
DE
Germany
Prior art keywords
plate
parts
mold
plane
injection molding
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
Application number
DE19772704734
Other languages
German (de)
Other versions
DE2704734A1 (en
DE2704734B2 (en
Inventor
Rudolf Romont Liechti (Schweiz)
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.)
Metallurgie Et Plastic Sa Romont (schweiz)
Original Assignee
Metallurgie Et Plastic Sa Romont (schweiz)
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Publication date
Application filed by Metallurgie Et Plastic Sa Romont (schweiz) filed Critical Metallurgie Et Plastic Sa Romont (schweiz)
Publication of DE2704734A1 publication Critical patent/DE2704734A1/en
Publication of DE2704734B2 publication Critical patent/DE2704734B2/en
Application granted granted Critical
Publication of DE2704734C3 publication Critical patent/DE2704734C3/en
Expired legal-status Critical Current

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Classifications

    • 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
    • B65D19/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D19/0004—Rigid pallets without side walls
    • B65D19/0053—Rigid pallets without side walls the load supporting surface being made of more than one element
    • B65D19/0055—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface
    • B65D19/0067—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface the base surface being made of more than one element
    • B65D19/0071—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface the base surface being made of more than one element forming discontinuous or non-planar contact surfaces
    • B65D19/0073—Rigid pallets without side walls the load supporting surface being made of more than one element forming a continuous plane contact surface the base surface being made of more than one element forming discontinuous or non-planar contact surfaces and each contact surface having a stringer-like shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/26—Moulds
    • B29C45/2628—Moulds with mould parts forming holes in or through the moulded article, e.g. for bearing cages
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00014—Materials for the load supporting surface
    • B65D2519/00024—Metal
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00014—Materials for the load supporting surface
    • B65D2519/00034—Plastic
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00049—Materials for the base surface
    • B65D2519/00059—Metal
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00009—Materials
    • B65D2519/00049—Materials for the base surface
    • B65D2519/00069—Plastic
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00288—Overall construction of the load supporting surface made of one piece
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00303—Cell type, e.g. honeycomb
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00283—Overall construction of the load supporting surface
    • B65D2519/00308—Overall construction of the load supporting surface grid type, e.g. perforated plate
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00328—Overall construction of the base surface shape of the contact surface of the base
    • B65D2519/00333—Overall construction of the base surface shape of the contact surface of the base contact surface having a stringer-like shape
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00358—Cell type, e.g. honeycomb
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00313—Overall construction of the base surface
    • B65D2519/00363—Overall construction of the base surface grid type, e.g. perforated plate
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00398—Overall construction reinforcements
    • B65D2519/00402—Integral, e.g. ribs
    • B65D2519/00407—Integral, e.g. ribs on the load supporting surface
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00258—Overall construction
    • B65D2519/00398—Overall construction reinforcements
    • B65D2519/00402—Integral, e.g. ribs
    • B65D2519/00412—Integral, e.g. ribs on the base surface
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
    • 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
    • B65D2519/00—Pallets or like platforms, with or without side walls, for supporting loads to be lifted or lowered
    • B65D2519/00004—Details relating to pallets
    • B65D2519/00547—Connections
    • B65D2519/00552—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer
    • B65D2519/00557—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements
    • B65D2519/00562—Structures connecting the constitutive elements of the pallet to each other, i.e. load supporting surface, base surface and/or separate spacer without separate auxiliary elements chemical connection, e.g. glued, welded, sealed

Description

Die Erfindung betrifft ein Verfahren zur Herstellung einer Gußform für eine Platte, die eine Gitterstruktur aufweist. Es ist die Aufgabe der Erfindung, eine Gußform für eine Platte herzustellen, die eine gewisse Last auf einer gegebenen Oberfläche tragen kann, wenn sie sich auf bestimmte Auflagen stützt, wobei möglichst wenig Material verwendet werden soll.The invention relates to a method for producing a casting mold for a plate which has a lattice structure having. It is the object of the invention to produce a mold for a plate that has a certain Can bear a load on a given surface if it is supported by certain supports, where possible little material should be used.

Um diese Aufgabe zu lösen, ist es naheliegend, der Platte eine Gitterstruktur mit öffnungen zu geben; die Abmessungen und die Form der öffnungen des Gitters, die zur Vereinfachung der Fabrikation gleich sein sollen hängen von der Art der Last ab. Diese Wahl bedingt, daß das Trägheitsmoment der Profile, weiche die öffnungen begrenzen, möglichst groß ist. Für ein gegebenes Material ist damit die Last gegeben, die die Platte tragen kann.To solve this problem, it is obvious to give the plate a lattice structure with openings; the Dimensions and the shape of the openings in the grid, which should be the same to simplify manufacture depend on the type of load. This choice requires that the moment of inertia of the profiles, soft the Limit openings, is as large as possible. For a given material there is thus the load that the Plate can carry.

Es sind bereits im Spritzgußverfahren hergestellte Platten aus Kunststoff bekannt, die eine Gitterstruktur haben und bei denen die Seiten der öffnungen durch Profile mit rechteckigem Querschnitt gebildet werden, mit einem kleinen Verjüngungswinkel, um das Ausformen /u ermöglichen; diese Form des Querschnittes hat ein verhältnismäßig kleines Trägheitsmoment, da zuviel Material nahe an der neutralen Achse liegt und deswegen schlecht ausgenutzt ist. Um eine große Biegefesligkeit /u erhalten, soll sich der Querschnitt der Form eines »I« annähern, welcher für einen gegebenen Querschnitt ein hohes Trägheitsmoment hat und damit das Material möglichst gut ausnützt. Damit ergibt sich die Aufgabe, die Gußform so auszubilden, daß sie möglichst einfach ist und doch den Spritzguß (beispielsweise) und das Ausformen einer Platte ermöglicht, welche öffnungen enthält, tieren Seiten einen Quer' schnitt in Form eines »I« haben.Plates made of plastic which are produced by injection molding are known which have a lattice structure and in which the sides of the openings are formed by profiles with a rectangular cross-section, with a small angle of taper to enable shaping / u; this shape of the cross-section has a relatively small moment of inertia because too much material is close to the neutral axis and is therefore poorly utilized. In order to obtain a high level of flexural strength / u , the cross-section should approximate the shape of an »I«, which has a high moment of inertia for a given cross-section and thus uses the material as well as possible. This gives rise to the task of designing the mold so that it is as simple as possible and yet enables injection molding (for example) and the forming of a plate which contains openings, animal sides have a cross-section in the form of an "I".

Rs gibt (iußformcn (siehe z. 1). das britische Patent Il r>l10l !) /iitn .Spritzguß voll Kunststoffteile!!, welche seitliche öffnungen haben; aber für das Ausformen und das Herausnehmen des gegossenen Teiles muß einer der Teile der Gußform mindestens einen herausziehbaren Kern enthalten. Eine derartige Form zur Fabrikation einer Platte mit Gitterstruktur wäre unverhältnismäßig teuer.There are (iußformcn (see z. 1). The British patent Il r > l 10l!) / Iitn. Injection molding full of plastic parts !!, which have side openings; but for the molding and removal of the molded part, one of the parts of the mold must contain at least one extractable core. Such a mold for fabricating a plate with a lattice structure would be disproportionately expensive.

Die Erfindung löst die Aufgabe, die genannten Nachteile zu vermeiden, indem die Gußform für eine Platte mit Gitterstruktur zweiteilig so ausgeführt wird, daß die beiden Teile in einer Richtung trennbar sind, die einen gewissen Winkel mit der Normalen auf der Plattenebene bildet.The invention solves the problem of avoiding the disadvantages mentioned by the mold for a Plate with a lattice structure is designed in two parts so that the two parts are separable in one direction, the forms a certain angle with the normal on the plane of the plate.

Im folgenden werden mehrere Ausführungsformen des erfindungsgemäßen Verfahrens und der nach dem Verfahren erhaltenen Platte im einzelnen beispielsweise beschrieben, wobei auf die Zeichnungen Bezug genommen wird, in denenIn the following, several embodiments of the method according to the invention and according to the The method obtained plate is described in detail, for example, with reference to the drawings will in which

Fig. 1 das Prinzip des Verfahrens zur Herstellung einer Gußform zeigt.Fig. 1 shows the principle of the method for making a casting mold.

F i g. 2 ist eine Variante des Verfahrens.F i g. 2 is a variant of the method.

F i g. 3 ist eine perspektivische Darstellung der Form und der nach dem Verfahren gemäß Fig. 1 erhaltenen Platte.F i g. 3 is a perspective view of the mold and that obtained by the method of FIG Plate.

F i g. 1 zeigt eine Platte 1 mit einer Gitterstruktur, die aus Kunststoff mit Spritzguß in dem Hohlraum hergestellt wird, welchen die beiden Teile 2 und 3 einer Form in geschlossener Stellung bilden. Die Plattenebene bildet einen Winkel 4 gegen die Ebene, welche senkrecht auf der Richtung der Kräfte steht, welche beiF i g. Figure 1 shows a plate 1 with a lattice structure made of plastic with injection molding in the cavity is made, which the two parts 2 and 3 form a mold in the closed position. The plate plane forms an angle 4 with respect to the plane which is perpendicular to the direction of the forces which at

JO öffnen und Schließen der Form wirken. Dieser Winkel 4 ermöglicht die Au.iformung der Querschnitte in I-Form der Platte 1; die Oberfläche 6 der Teile 2 und 3 gleiten nämlich aufeinander, wenn die Oberfläche 7 sich von dem durch Spritzguß gebildeten Profil beim öffnen der Form abhebt.JO open and close the form work. This angle 4 enables the cross-sections to be formed in an I-shape the plate 1; namely, the surface 6 of the parts 2 and 3 slide on each other when the surface 7 moves away from the profile formed by injection molding stands out when the mold is opened.

Eine einzige Bedingung ist einzuhalten: die Tangente an die Oberfläche 7 in der Nähe des Schnittes mit der Plattenebene muß parallel zur Richtung 5 sein oder mit ihr einen kleinen Winkel bilden, der das Ausformen erleichtert.There is only one condition to be met: the tangent to the surface 7 in the vicinity of the intersection with the The plane of the plate must be parallel to the direction 5 or form a small angle with it, which enables the forming relieved.

Fig. 3 zeigt perspektivisch die Form und die durch das Verfahren erhaltene Platte; die Platte enthält eine Reihe von rechteckigen öffnungen 8, deren Seiten 10 einen I-förmigen Querschnitt haben mit sehr abgerundeten Winkeln, und die der Form 11 entsprechen (eine der Seiten des »I«). Die Seiten 9 haben einen rechteckigen Querschnitt.Fig. 3 shows in perspective the shape and the plate obtained by the method; the plate contains a Row of rectangular openings 8, the sides 10 of which have an I-shaped cross-section with very rounded ones Angles, and that correspond to shape 11 (one of the sides of the "I"). Pages 9 have one rectangular cross-section.

Die beiden Teile 2 und 3 der Form werden auf einer Spritzgußmaschine montiert; in geschlossener Stellung werden die Teile 2 und 3 durch beliebige Mittel während des Gusses mit Kunststoff gegeneinander gepreßt; dann wird die Form geöffnet und eine übliche Auswurfvorrichtung trennt die gegossene Platte von dem festen Teil der Form.The two parts 2 and 3 of the mold are assembled on an injection molding machine; in closed position parts 2 and 3 are pressed against one another by any means during the casting with plastic; then the mold is opened and a conventional ejector separates the cast plate from the solid part the form.

Die in den F i g. 1 und 3 wiedergegebene Form hat indessen /wei Nachteile: sie braucht verhältnismäßig viel Platz und ist schwierig herzustellen.The in the F i g. 1 and 3, however, has disadvantages: it needs proportionally lots of space and difficult to manufacture.

Diese Schwierigkeilen lassen sich vermeiden durch eine Form gemäß Fig. 2; die TeMe, die die Öffnungen 8 der Platte 1 bilden, sind leichter herzustellen, da die Ebene der Platte parallel /u den äußeren Oberflächen der beiden Teile der Form sind. Die Form enthält drei Teile 12, 13, 14; der Teil 12 ist auf der1 Grundplatte einer Spritzgußmasehine befestigt, während Teil 14 auf derThese difficulties can be avoided by a shape according to FIG. 2; the parts that form the openings 8 of the plate 1 are easier to manufacture because the plane of the plate is parallel to the outer surfaces of the two parts of the mold. The mold contains three parts 12, 13, 14; the part 12 is attached to the 1 base plate of an injection molding machine, while part 14 on the

fi"i Vorrichtung zum Schließen und öffnen der Form befestigt ist. Eine nicht dargestellte Vorrichtung bewirkt, daß der Schieber 11 in Zusammenarbeit mit (lein Teil 14 sich (Hler da/u (in KiclHiiiiü des !'feiles 16)fi "i device for closing and opening the mold is attached. A device, not shown, causes the slide 11 in cooperation with (lein part 14 himself (Hler da / u (in KiclHiiiiü des! 'feiles 16)

und schräg zur Öffnungs- und Schließungsrichtung 15 der Form bewegt. Von außen gesehen trennt sich der Schieber 13 von dem Teil 12 in einer Richtung, welche den Winkel 4 zur Senkrechten auf der Platte 1 bildet.and at an angle to the opening and closing direction 15 the shape moves. Seen from the outside, the slide 13 separates from the part 12 in a direction which forms the angle 4 to the vertical on the plate 1.

Die Form ist sehr kompakt; die Vorrichtung dagegen, welche die gleichzeitige Verschiebung senkrecht zur Öffnungsrichtung bewirkt, ist verhältnismäßig kompliziert. The shape is very compact; the device on the other hand, which allows the simultaneous displacement perpendicular to the Opening direction causes is relatively complicated.

Im vorstehenden wurde insbesondere die Anwendung des Verfahrens für Spritzguß von Kunststoff betrachtet; jedoch ist es einleuchtend, daß das Verfahren auch für Aluminiumspritzguß oder für jedes andere Gußverfah ren Verwendung finden kann. Die Platten, die gemäß dem beschriebenen Verfahren zur Herstellung von Gußformen erzeugt werden, können für viele Zwecke Verwendung finden, z. B. für Horde, Tragplatten über Bäder zur chemischen Behandlung, Gepäckträger für Fahrzeuge usw.In the above, the application of the method for injection molding of plastic was considered in particular; however, it is evident that the process could also be used for aluminum injection molding or for any other casting process can be used. The plates made according to the method described for the manufacture of Molds are generated can be used for many purposes, e.g. B. for Horde, support plates over Chemical treatment baths, vehicle luggage racks, etc.

Ilior/i! I Blatt ZeichniineenIlior / i! I sheet of drawings

Claims (5)

Patentansprüche:Patent claims: 1. Verfahren zur Herstellung einer GuOform für eine Platte mit Gitterstruktur, dadurch gekennzeichnet, daß eine zweiteilige Gußform Verwendung findet, deren beide Teile in einer Richtung trennbar sind, die einen gewissen Winkel mit der Normalen auf der Plattenebene bildet.1. A method for producing a GuOform for a plate with a lattice structure, characterized in that that a two-part mold is used, the two parts in one Direction are separable, which forms a certain angle with the normal on the plane of the plate. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die beiden Teile so gestaltet sind, daß die Ebene der genannten Platte parallel zu den äußeren Oberflächen der beiden Teile ist, wobei einer dieser Teile ein Schieber ist, welcher sich schräg mit einer Bewegungskomponente senkrecht zur Öffnungsrichtung der Form bewegt2. The method according to claim 1, characterized in that that the two parts are designed so that the plane of said plate is parallel to the outer surfaces of the two parts, one of these parts being a slide which is moved obliquely with a component of movement perpendicular to the opening direction of the mold 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die genannten Teile so gestaltet sind, daß die Normale auf der Ebene der genannten Platte einen gewissen Winkel zur Trennungsrichtung der genannten Teile bildet.3. The method according to claim 1, characterized in that said parts are designed so that the normal on the plane of said plate makes a certain angle to the direction of separation of the forms mentioned parts. 4. Nach dem Verfahren des Anspruchs 1 hergestellte Platte, dadurch gekennzeichnet, daß wenigstens eine der Seiten jeder der öffnungen des genannten Gitters durch ein Profil gebildet wird, dessen Querschnitt der Form eines »I« nahekommt.4. Plate produced by the method of claim 1, characterized in that at least one of the sides of each of the openings of the said grid is formed by a profile, whose cross-section comes close to the shape of an "I". 5. Platte gemäß Anspruch 4, dadurch gekennzeichnet, daß sie aus Kunststoffmaterial im Spritzgußverfahren hergestellt ist.5. Plate according to claim 4, characterized in that it is made of plastic material by injection molding is made.
DE19772704734 1976-02-25 1977-02-04 Method for producing a mold for a plate Expired DE2704734C3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH230076A CH609607A5 (en) 1976-02-25 1976-02-25 Process for moulding a plate

Publications (3)

Publication Number Publication Date
DE2704734A1 DE2704734A1 (en) 1977-09-01
DE2704734B2 DE2704734B2 (en) 1978-10-12
DE2704734C3 true DE2704734C3 (en) 1979-06-07

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DE19772704734 Expired DE2704734C3 (en) 1976-02-25 1977-02-04 Method for producing a mold for a plate

Country Status (5)

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CH (1) CH609607A5 (en)
DE (1) DE2704734C3 (en)
FR (1) FR2342143A1 (en)
IT (1) IT1076103B (en)
NL (1) NL7701160A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949251C2 (en) * 1979-12-07 1984-02-23 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Device for removing partial slides from an injection or casting mold for cages for cylindrical rolling elements
US5549215A (en) * 1994-01-27 1996-08-27 Cruce; Christopher J. Plastic open frame basket construction and method of making the same

Also Published As

Publication number Publication date
IT1076103B (en) 1985-04-24
CH609607A5 (en) 1979-03-15
FR2342143A1 (en) 1977-09-23
NL7701160A (en) 1977-08-29
DE2704734A1 (en) 1977-09-01
FR2342143B1 (en) 1980-07-04
DE2704734B2 (en) 1978-10-12

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