Browse Prior Art Database

Custom-made Casting Mold Insertions to Provide Specific Die Casting Plastic Parts

IP.com Disclosure Number: IPCOM000190434D
Published in the IP.com Journal: Volume 9 Issue 12A (2009-12-10)
Included in the Prior Art Database: 2009-Dec-10
Document File: 3 page(s) / 2M

Publishing Venue

Siemens

Related People

Juergen Carstens: CONTACT

Abstract

From today's point of view it is not possible to deliver custom-made plastic parts or foam parts which come out of a die casting machine in low quantities. Processes for creating an ear mold directly have been developed, though up to now it is not possible to use materials which resist high temperatures or pressure. For manufacturers of hearing instruments, a technical solution for the creation of an individual casting mold out of soft materials like silicon foam is especially desirable. The idea of the following novel solution is to utilize a standard die cast form where one can put in a custom-made insertion. Figure 1 shows the sketch of the proposed standard die cast form without the insertion. The insertion can be made e.g. with a laser sinter metal rapid prototyping process or with milling. Figure 2 illustrates the insertion with the red line indicating its custom-made three-dimensional shape. The standard die cast form has to be opened and the custom made insertion is put in. By closing the standard die-cast the completely assembled form that is drafted in Figure 3 is obtained.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 56% of the total text.

Page 1 of 3

Custom-made Casting Mold Insertions to Provide Specific Die Casting Plastic Parts

Idea: Frank Naumann, DE-Erlangen

From today's point of view it is not possible to deliver custom-made plastic parts or foam parts which

come out of a die casting machine in low quantities. Processes for creating an ear mold directly have

been developed, though up to now it is not possible to use materials which resist high temperatures or

pressure. For manufacturers of hearing instruments, a technical solution for the creation of an

individual casting mold out of soft materials like silicon foam is especially desirable.

The idea of the following novel solution is to utilize a standard die cast form where one can put in a

custom-made insertion. Figure 1 shows the sketch of the proposed standard die cast form without the

insertion. The insertion can be made e.g. with a laser sinter metal rapid prototyping process or with

milling. Figure 2 illustrates the insertion with the red line indicating its custom-made three-dimensional

shape. The standard die cast form has to be opened and the custom made insertion is put in. By

closing the standard die-cast the completely assembled form that is drafted in Figure 3 is obtained. Next, the standard die form is connected to an injection molding machine and the plastic or foam can

flow into the cavity. This process is shown in Fi...