DE19615309A1 - Injection moulding and joining of objects formed by two separate sections - Google Patents

Injection moulding and joining of objects formed by two separate sections

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Publication number
DE19615309A1
DE19615309A1 DE19615309A DE19615309A DE19615309A1 DE 19615309 A1 DE19615309 A1 DE 19615309A1 DE 19615309 A DE19615309 A DE 19615309A DE 19615309 A DE19615309 A DE 19615309A DE 19615309 A1 DE19615309 A1 DE 19615309A1
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Germany
Prior art keywords
halves
injection
mold
injection mold
molded
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DE19615309A
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German (de)
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DE19615309B4 (en
Inventor
Friedrich Hachtel
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F & G Hachtel & Co GmbH
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Classifications

    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/022—Particular heating or welding methods not otherwise provided for
    • B29C65/028—Particular heating or welding methods not otherwise provided for making use of inherent heat, i.e. the heat for the joining comes from the moulding process of one of the parts to be joined
    • 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
    • B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
    • B29C45/006—Joining parts moulded in separate cavities
    • 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
    • B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/567—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using a tamping or a swaging operation, i.e. at least partially deforming the edge or the rim of a first part to be joined to clamp a second part to be joined
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/66—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined
    • B29C65/665—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by liberation of internal stresses, e.g. shrinking of one of the parts to be joined using shrinking during cooling
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
    • B29C66/124—Tongue and groove joints
    • B29C66/1244—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue
    • B29C66/12445—Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue having the tongue on the side
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool reciprocating along one axis
    • 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/549—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles said hollow-preforms being interconnected during their moulding process, e.g. by a hinge

Abstract

A new injection moulding procedure has been invented, for e.g. a curved nozzle for a washing machine, which is assembled from two halves (11, 12). The halves are simultaneously injected in separate mould cavities. These lie on opposite sides of a divided moulding core (23). The mould (20) is opened; the mouldings remain in the mould halves, but are released from the divided mould core. The core sections are retracted, leaving the mouldings directly facing each other. The halves are joined by pressing the mould halves together. Also claimed is an injection-moulded object, made as described. The join is not a material connection, rather is it a snap fastening. Also claimed is an injection mould of the form described.

Description

Die Erfindung betrifft einen spritzgegossenen, aus zwei Hälf­ ten zusammengesetzten Körper, insbesondere eine Bogendüse für Spülmaschinen, sowie ein Verfahren und eine Spritzgießform zu seiner Herstellung.The invention relates to an injection molded, from two halves th composite body, in particular an arc nozzle for Dishwashers, as well as a method and an injection mold its manufacture.

Aus Kunststoff spritzgegossene Körper, die aus zwei Hälften zusammengesetzt sind, sind in vielfältigen Formen bekannt. Meist handelt es sich dabei um Hohlkörper. Ein Beispiel für einen solchen Körper ist eine Bogendüse für Spülmaschinen, die auf einen Halbkreis verteilt mehrere Düsenöffnungen aufweist. Bislang werden diese Bogendüsen ebenso wie andere zweiteilige Spritzgußkörper aus zwei Teilen in einer Form gespritzt, wobei die beiden Teile durch ein Filmscharnier miteinander verbunden bleiben. Nach dem Gießen werden die zusammenhängenden Hälften ausgeworfen und in einem zweiten Arbeitsschritt durch Zusam­ mendrücken der beiden Hälften zum fertigen Körper montiert. Die Herstellung der Bogendüsen ist also ein relativ arbeits­ aufwendiges Verfahren. Durch die Filmscharnierverbindung zwi­ schen den beiden Körperhälften ist außerdem ein exaktes Sprit­ zen der beiden Hälften sehr schwierig.Plastic injection molded body made of two halves are composed, are known in various forms. Most of these are hollow bodies. An example for such a body is an arc nozzle for dishwashers that has a plurality of nozzle openings distributed in a semicircle. So far, these arc nozzles have become just like other two-part ones Injection molded body molded from two parts in one mold, being the two parts are connected by a film hinge stay. After pouring, the contiguous halves ejected and in a second step by together press the two halves to the finished body. The manufacture of the arc nozzles is therefore relatively laborious complex process. Through the film hinge connection between  between the two body halves is also an exact fuel zen of the two halves very difficult.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Möglichkeit zu schaffen, einen aus zwei Hälften bestehenden spritzgegossenen Körper auf rationellere und präzisere Weise fertigen zu können.The present invention has for its object a Possibility to create a two-half injection molded body in a more rational and precise way to be able to manufacture.

Diese Aufgabe wird gelöst durch ein Verfahren zur Herstellung eines spritzgegossenen Körpers, insbesondere einer Bogendüse für Spülmaschinen, der aus zwei Hälften zusammengesetzt ist, mit den Schritten:This object is achieved by a manufacturing method of an injection molded body, especially an arc nozzle for dishwashers, which is composed of two halves, with the steps:

  • - gleichzeitiges Spritzen der beiden Körperhälften in geson­ derten Hohlräumen einer gemeinsamen Spritzgießform, wobei die Hohlräume auf gegenüberliegenden Seiten eines geteil­ ten Formkerns angeordnet sind,- Simultaneous spraying of the two halves of the body in geson most cavities of a common injection mold, wherein the cavities are divided on opposite sides of one th mold core are arranged,
  • - Öffnen der Spritzgießform, wobei die Körperhälften in der Form festgehalten werden, sich aber vom geteilten Formkern lösen,- Open the injection mold, with the body halves in the Form are retained, but from the divided mold core to solve,
  • - Auseinanderfahren des Formkerns, so daß sich die beiden Körperhälften unmittelbar gegenüberstehen,- Moving the mandrel apart so that the two Body halves face each other directly,
  • - Koppelung der beiden Körperhälften durch Aufeinanderdrüc­ ken mittels mindestens eines Teils der Spritzgießform.- Coupling the two halves of the body by pushing together ken by means of at least a part of the injection mold.

Bei diesem Verfahren entfällt also der Arbeitsschritt der nachträglichen Montage des Körpers. Die beiden Hälften werden direkt in der Spritzgießform durch Aufeinanderdrücken fertig­ montiert und dann ausgeworfen. Auch auf eine Filmscharnierver­ bindung zwischen den beiden Hälften kann verzichtet werden. Hierdurch ist ein exakteres Spritzen der beiden Körperhälften möglich. Gegenüber dem bislang durchgeführten Verfahren zur Fertigung von Bogendüsen und anderen Körpern können nach dem neuen Verfahren außerdem doppelt so viele Bauteile bei glei­ cher Formhaltekraft gefertigt werden. Hierbei können selbst­ verständlich mehrere Körperhälften gleichzeitig in einer Spritzgießform gegossen und montiert werden. Der nach diesem erfindungsgemäßen Verfahren hergestellte spritzgegossene Körper ist aus zwei Hälften zusammengesetzt, die ohne Mate­ rialverbindung über eine Rastverbindung miteinander gekoppelt sind.With this method, the step of subsequent assembly of the body. The two halves will be ready in the injection mold by pressing them together assembled and then ejected. Also on a film hinge there is no need for a bond between the two halves. This makes the two halves of the body more precise possible. Compared to the previously carried out process for Manufacture of arc nozzles and other bodies can be made according to the  new processes also double the number of components at glei cher shape retention force are manufactured. You can do this yourself understandable several body halves at the same time in one Injection mold can be cast and assembled. The one after this Injection molded according to the inventive method Body is composed of two halves, the one without mate rialverbindung coupled with each other via a locking connection are.

Die erfindungsgemäße Spritzgießform zur Herstellung des aus zwei Hälften zusammengesetzten Körpers weist zwei in axialer Richtung gegenüber einem dazwischenliegenden, geteilten Form­ kern verfahrbare Formteile auf, von denen der eine Teil zu­ sammen mit dem Formkern mindestens einen ersten Hohlraum zur Formung der ersten Körperhälfte und der zweite Teil zusammen mit dem Formkern mindestens einen zweiten Hohlraum zur Formung der zweiten Körperhälfte bildet, wobei der Formkern senkrecht zur Bewegungsrichtung der beiden Formteile auseinanderfahrbar ist und wobei mindestens einer der beiden Formteile einen be­ weglichen Abschnitt zum Aufeinanderdrücken der Körperhälften aufweist. Beim Entformen der fertiggegossenen Körperhälften fahren zunächst die beiden Formteile auseinander, während der Formkern noch geschlossen bleibt. Die gegossenen Körperhälften lösen sich dabei vom Formkern, werden jedoch in den beiden Formteilen festgehalten. Anschließend öffnet auch der Form­ kern, so daß sich nun die beiden Körperhälften unmittelbar gegenüberstehen und durch Aufeinanderdrücken montiert werden können. Hierbei können auch beide Formteile bewegliche Ab­ schnitte zum Aufeinanderdrücken der Körperhälften und Aus­ werfen des fertigmontierten Körpers aufweisen.The injection mold according to the invention for the production of two halves of composite body has two in axial Direction versus an intermediate, split shape core movable molded parts, of which one part is closed together with the mandrel at least a first cavity Forming the first half of the body and the second part together with the mandrel at least a second cavity for molding the second half of the body, with the mandrel perpendicular can be moved apart for the direction of movement of the two molded parts is and wherein at least one of the two molded parts is a be movable section for pressing the body halves together having. When demoulding the cast body halves first move the two molded parts apart during the Mold core still remains closed. The cast body halves detach from the mandrel, but are in the two Molded parts held. Then the mold also opens core, so that now the two halves of the body immediately face each other and be assembled by pressing them together can. Both molded parts can also move from here cuts to press the body halves and off throw the assembled body.

Nachfolgend werden beispielhaft ein erfindungsgemäßes Ver­ fahren und eine erfindungsgemäße Spritzgießform anhand einer damit hergestellten Bogendüse für Spülmaschinen mit Bezug auf die Zeichnung näher erläutert. A Ver drive and an injection mold according to the invention using a thus manufactured arc nozzle for dishwashers with reference to the drawing explains in more detail.  

Es zeigen:Show it:

Fig. 1 einen Teilschnitt durch eine Spritzgieß­ form mit zwei Hohlräumen für die Hälften einer Bogendüse; Figure 1 is a partial section through an injection mold with two cavities for the halves of an arc nozzle.

Fig. 2 einen Teilschnitt durch die Spritzgieß­ form nach Fig. 1 in einem zweiten Verfah­ rensstadium der Herstellung der Bogendü­ se; Fig. 2 is a partial section through the injection mold of Figure 1 in a second procedural stage of the manufacture of the Bogendü se.

Fig. 3 einen Teilschnitt durch die Spritzgieß­ form nach Fig. 1 in einem dritten Verfah­ rensstadium; Fig. 3 is a partial section through the injection mold of Figure 1 in a third procedural stage.

Fig. 4 einen Teilschnitt durch die Spritzgieß­ form nach Fig. 1 in einem vierten Stadium des Herstellungsverfahrens; Figure 4 is a partial section through the injection mold of Figure 1 in a fourth stage of the manufacturing process.

Fig. 5a-d verschiedene Ansichten der mit der Spritzgießform aus den Fig. 1-4 herge­ stellten Bogendüse. Fig. 5a-d different views of the with the injection mold from Figs. 1-4 Herge made nozzle.

Die in Fig. 5b im zentralen Längsschnitt gezeigte Bogendü­ se 10 besteht aus zwei Hälften 11 und 12, die in Fig. 5a und 5c in der Innenansicht und in Fig. 5d in der Rückansicht übereinanderliegend gezeigt sind. Die Bogendüse 10 weist halb­ kreisförmig angeordnet mehrere Düsenöffnungen 13 auf, die von beiden Hälften gebildet werden. In den Fig. 1-4 ist die Spritzgießform sowie das Herstellungsverfahren für die Bogen­ düse 10 aus Fig. 5 beschrieben.The bend nozzle 10 shown in Fig. 5b in the central longitudinal section consists of two halves 11 and 12 , which are shown in Fig. 5a and 5c in the inner view and in Fig. 5d in the rear view one above the other. The arch nozzle 10 has a plurality of nozzle openings 13 arranged in a semicircle, which are formed by both halves. In FIGS. 1-4, the injection mold as well as the manufacturing method for the sheet is nozzle 10 of FIG. Described. 5

Die Spritzgießform 20 weist zwei Formteile 21 und 22 auf, die beidseits eines geteilten Formkerns 23 angeordnet sind. Das Formteil 21 bildet gemeinsam mit dem Kern 23 einen ersten Hohlraum zur Fertigung der Körperhälfte 11. Analog bildet das zweite Formteil 22 gemeinsam mit dem Formkern 23 einen zweiten Hohlraum zur Fertigung der zweiten Körperhälfte 12. Fig. 1 zeigt die Spritzgießform 20 in geschlossener Stellung, in der beide Körperhälften 11 und 12 gemeinsam gespritzt werden. Das nächste Verfahrensstadium ist in Fig. 2 gezeigt. Die beiden Formteile 21 und 22 fahren auseinander, was in Fig. 2 durch Pfeile angedeutet ist. Hierbei lösen sich die gegossenen Körperhälften 11 und 12 vom Formkern 23, werden jedoch in den Formteilen 21 bzw. 22 festgehalten. Im nächsten, in Fig. 3 ge­ zeigten Verfahrensschritt, werden nun auch die beiden Hälf­ ten 23.1 und 23.2 des geteilten Formkerns 23 auseinanderbe­ wegt, und zwar senkrecht zur Bewegungsrichtung der beiden Formteile 21 und 22. Jetzt stehen sich die beiden Körperhälf­ ten 11 und 12 unmittelbar gegenüber. Hierdurch ist es möglich, die beiden Körperhälften 11 und 12 durch bewegliche Tei­ le 24, 25 bzw. 26, 27 der beiden Formteile 21 und 22 aufein­ anderzudrücken und damit zur fertigen Bogendüse 10 zu montie­ ren, wie in Fig. 4 gezeigt ist. Durch Zurückfahren der be­ weglichen Teile 24, 25 bzw. 26, 27 wird die fertigmontierte Bogendüse 10 aus der Form 20 ausgeworfen.The injection mold 20 has two mold parts 21 and 22 which are arranged on both sides of a split mold core 23 . The molded part 21 forms, together with the core 23, a first cavity for manufacturing the body half 11 . Analogously, the second molded part 22, together with the molded core 23, forms a second cavity for manufacturing the second body half 12 . Fig. 1 shows the injection mold 20 in the closed position, in which both body halves 11 and 12 are injected together. The next stage of the process is shown in FIG. 2. The two molded parts 21 and 22 move apart, which is indicated in Fig. 2 by arrows. Here, the cast body halves 11 and 12 detach from the mold core 23 , but are held in the mold parts 21 and 22, respectively. In the next process step, shown in FIG. 3, the two halves 23.1 and 23.2 of the divided mandrel 23 are moved apart, perpendicular to the direction of movement of the two mold parts 21 and 22 . Now the two halves of the body 11 and 12 face each other directly. This makes it possible to press the two body halves 11 and 12 by movable parts 24 , 25 and 26 , 27 of the two molded parts 21 and 22 on one another and thus to assemble the finished bow nozzle 10 , as shown in FIG. 4. By moving back the movable parts 24 , 25 and 26 , 27 , the assembled bow nozzle 10 is ejected from the mold 20 .

Die Spritzgießform 20 nach den Fig. 1 bis 4 ist zwar im Aufbau komplizierter als die Spritzgießform zur Herstellung von Bogendüsen nach dem konventionellen Verfahren, doch können mit dieser Spritzgießform 20 doppelt so viele Körperhälften gegos­ sen und montiert werden, wie mit der herkömmlichen Spritz­ gießform. Außerdem entfällt durch die Form 20 ein separater Montageschritt für die beiden Hälften 11 und 12 der Düse 10, so daß trotz aufwendigerer Spritzgießform das geschilderte Fertigungsverfahren für die Bogendüse 10 sehr viel preiswerter ist als das herkömmliche Verfahren.The injection mold 20 according to FIGS. 1 to 4 is structurally more complicated than the injection mold for the production of arch nozzles according to the conventional method, but with this injection mold 20 twice as many body halves can be poured and assembled as with the conventional injection mold. In addition, the mold 20 eliminates a separate assembly step for the two halves 11 and 12 of the nozzle 10 , so that, despite the more complex injection mold, the manufacturing process described for the curved nozzle 10 is very much cheaper than the conventional method.

Claims (5)

1. Verfahren zur Herstellung eines spritzgegossenen Körpers, insbesondere einer Bogendüse für Spülmaschinen, der aus zwei Hälften 11, 12 zusammengesetzt ist, mit den Schrit­ ten:
  • - gleichzeitiges Spritzen der beiden Körperhälf­ ten (11, 12) in gesonderten Hohlräumen einer gemein­ samen Spritzgießform (20), wobei die Hohlräume auf gegenüberliegenden Seiten eines geteilten Form­ kerns (23) angeordnet sind,
  • - Öffnen der Spritzgießform (20), wobei die Körperhälf­ ten (11, 12) in der Form (20) festgehalten werden, sich aber vom geteilten Formkern (23) lösen,
  • - Auseinanderfahren des Formkerns (23), so daß sich die beiden Körperhälften (11, 12) unmittelbar gegenüber­ stehen,
  • - Koppelung der beiden Körperhälften (11, 12) durch Aufeinanderdrücken mittels mindestens eines Teils (24, 25; 26, 27) der Spritzgießform (20).
1. A method for producing an injection molded body, in particular an arc nozzle for dishwashers, which is composed of two halves 11, 12, with the steps:
  • - Simultaneous spraying of the two body halves ( 11 , 12 ) in separate cavities of a common injection mold ( 20 ), the cavities being arranged on opposite sides of a split mold core ( 23 ),
  • Opening the injection mold ( 20 ), the body halves ( 11 , 12 ) being held in the mold ( 20 ) but detaching from the split mold core ( 23 ),
  • - Moving the mold core ( 23 ) apart so that the two body halves ( 11 , 12 ) are directly opposite one another,
  • - Coupling the two body halves ( 11 , 12 ) by pressing them together by means of at least one part ( 24 , 25 ; 26 , 27 ) of the injection mold ( 20 ).
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß mehrere Körperhälften (11, 12) gleichzeitig in einer Spritzgießform (20) gegossen und montiert werden. 2. The method according to claim 1, characterized in that a plurality of body halves ( 11 , 12 ) are cast and assembled simultaneously in an injection mold ( 20 ). 3. Spritzgegossener Körper, der nach einem Verfahren nach Anspruch 1 oder 2 hergestellt und aus zwei Hälf­ ten (11, 12) zusammengesetzt ist, dadurch gekennzeichnet, daß die beiden Hälften (11, 12) ohne Materialverbindung nur über eine Rastverbindung miteinander gekoppelt sind.3. Injection molded body, which is produced by a method according to claim 1 or 2 and is composed of two halves ( 11 , 12 ), characterized in that the two halves ( 11 , 12 ) are coupled to one another only via a snap connection without material connection. 4. Spritzgießform zur Herstellung eines aus zwei Hälf­ ten (11, 12) zusammengesetzten Körpers (10) nach dem Ver­ fahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß sie zwei in axialer Richtung gegenüber einem da zwischen­ liegenden geteilten Formkern (23) verfahrbare Formtei­ le (21, 22) aufweist, von denen der eine Teil (21) zusam­ men mit dem Formkern (23) mindestens einen ersten Hohlraum zur Formung der ersten Körperhälfte (11) und der zweite Formteil (22) zusammen mit dem Formkern (23) mindestens einen zweiten Hohlraum zur Formung der zweiten Körperhälf­ te (12) bildet, wobei der Formkern (23) senkrecht zur Bewegungsrichtung der beiden Formteile (21, 22) ausein­ anderfahrbar ist und wobei mindestens einer der beiden Formteile (21, 22) einen beweglichen Abschnitt (24, 25; 26, 27) zum Aufeinanderdrücken der Körperhälften aufweist.4. Injection mold for the production of a body composed of two halves ( 11 , 12 ) ( 10 ) according to the method of claim 1 or 2, characterized in that they are movable in the axial direction relative to a split mold core ( 23 ) located therebetween Has molded parts ( 21 , 22 ), of which one part ( 21 ) together with the mold core ( 23 ) has at least one first cavity for molding the first body half ( 11 ) and the second molded part ( 22 ) together with the mold core ( 23 ) forms at least one second cavity for shaping the second half of the body ( 12 ), the mandrel ( 23 ) being movable apart from one another perpendicular to the direction of movement of the two molded parts ( 21 , 22 ) and at least one of the two molded parts ( 21 , 22 ) being movable Has section ( 24 , 25 ; 26 , 27 ) for pressing the body halves together. 5. Spritzgießform nach Anspruch 4, dadurch gekennzeichnet, daß beide Formteile (21, 22) bewegliche Abschnitte (24, 25; 26, 27) zum Aufeinanderdrücken der Körperhälf­ ten (11, 12) und Auswerfen des fertigmontierten Kör­ pers (10) aufweisen.5. Injection mold according to claim 4, characterized in that both molded parts ( 21 , 22 ) have movable sections ( 24 , 25 ; 26 , 27 ) for pressing together the body halves ( 11 , 12 ) and ejecting the fully assembled body ( 10 ).
DE19615309A 1996-04-18 1996-04-18 Method, injection-molded body and injection mold for producing an injection-molded body Expired - Fee Related DE19615309B4 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19809990A1 (en) * 1998-03-09 1999-09-16 Peter Marth Hollow plastic container moulding plant
EP1166999A1 (en) * 2000-06-21 2002-01-02 Ask Industries S.p.A. Process for the automatic and centered assembly of molded parts to be coupled
EP2179205A1 (en) * 2007-07-18 2010-04-28 Fluidmaster, INC. Flush valve apparatus and method for forming a frame and housing for a flush valve
DE10158698B4 (en) * 2001-11-29 2020-12-24 Weener Plastik Gmbh Process for producing a plastic body

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005037810A1 (en) * 2005-08-08 2007-02-15 Behr Gmbh & Co. Kg Method and tool for molding components, in particular plastic components

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2157132A1 (en) * 1971-11-17 1973-05-24 Narten Fa Georg Injection moulding hollow articles prodn - with components welded following moulding

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19809990A1 (en) * 1998-03-09 1999-09-16 Peter Marth Hollow plastic container moulding plant
DE19809990C2 (en) * 1998-03-09 2002-09-05 Peter Marth Process and device for the production of hollow plastic articles
EP1166999A1 (en) * 2000-06-21 2002-01-02 Ask Industries S.p.A. Process for the automatic and centered assembly of molded parts to be coupled
DE10158698B4 (en) * 2001-11-29 2020-12-24 Weener Plastik Gmbh Process for producing a plastic body
EP2179205A1 (en) * 2007-07-18 2010-04-28 Fluidmaster, INC. Flush valve apparatus and method for forming a frame and housing for a flush valve
EP2179205A4 (en) * 2007-07-18 2013-05-01 Fluidmaster Flush valve apparatus and method for forming a frame and housing for a flush valve

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