DD291288A5 - MEANS FOR MANUFACTURING ACTIVE, CONTOURING TOOL PARTS - Google Patents

Abstract

The invention relates to a means for producing active, contour-forming tool components for molds or tool components, which allows the production of undercuts, sharp edges and ribs of experimental tools with little effort. According to the invention, the object is achieved by the means for producing these molds being an insert which is to be worked into the mold half in such a way that it can be absorbed into the mold halves. FIG {prototype; Simple tool; Utility; Plastic parts; Metal spraying}

Description

For this 1 page drawing

Field of application of the invention

The invention relates to a means for producing active, contour-forming tool components for molds or tools for casting, foaming, blow molding, transfer molding or injection molding of resins or plastic materials by means of metal spraying, flame spraying, MCP process, in particular using inserts for the realization of Hinterschetdungen.

Characteristic of the known state of the art

Auxiliary tools / simple tools are required for the production of plastic parts for prototyping in the context of product development. These tools are made by means of metal spraying with zinc. For this purpose, it is generally known to produce a model of the plastic part with complete outer and inner contour of such material, which resists the thermal load of the metal spraying of zinc without deformation. When making such auxiliary tools / simple tools, the following work is required:

1. Attach the model to a plate. Applying release agent.

2. Metal spraying with a layer thickness of 3 to 5 mm.

3. Laying a frame, pouring with epoxy resin.

4. Turn the tool half. Remove the plate. Introduction of centering cones. Applying release agent. Metal spraying with a layer thickness of 3 to 5 mm.

5. Placing a frame. Pouring with epoxy resin.

6. Separate the tool half. To the auxiliary tool (nozzle, possibly ejector, plane-parallel surface, guides, centerings).

This solution requires a custom model with outer and inner contours, which are difficult to manufacture especially there. Sharp edges and ribs will hurt and less resistant to the spray load. Undercuts can not be realized.

Object of the invention

The object of the invention consists in a substantial reduction of the production-technical effort in the production of auxiliary tools / simple tools for prototyping.

Explanation of the essence of the invention

It is an object of the invention to provide a means for producing active, contour-forming tool parts for mold or tool components, the production of undercuts, sharp edges and ribs with low!

Effort is possible. |

According to the invention, the object is achieved in that the means for producing undercuts, sharp edges | and ribs is an insert.

After the further means / feature of the invention, the insert is incorporated into the mold halves so that a recording in, the mold halves takes place

 The inserts can also be composed of individual parts.

embodiment

The invention will be explained below with reference to an embodiment. In the accompanying drawing, the figure shows a perspective view of both mold halves. The contour-forming mold halves 2, 3 of a platemaking tool to be produced by metal spraying and rear casting with a casting material 1 include inserts 4 and 5 for the realization of undercuts.

-2- ^? 29t288 ^a

The inserts 4 and 5 are before the injection process with auseinandergefahrenem tool in the appropriate recordings

one or both mold halves 2 or 3 and if necessary also from the outside by suitable elements (for example screws,

Pins) in addition to secure. It is advantageous to insert the inserts 4, 5 into the sprue-side half-mold half 2, since the sprueed plastic part 6 penetrates through the sprue

be well cured with the inserts 4 and 5 when removing in this mold half 2.

When removing the plastic part 6 from the tool, this can be seen with the inserts 4 and 5 the tool. Plastic part 6 and inserts 4 and 5 are to be separated outside the injection mold and the inserts 4 and 5 for the next Insert injection again in the appropriate mold halves 1 and 2. The inserts 4 and 5 can also be assembled from individual parts and screwed together (pinned). With 7 is

the metal-sprayed layer refers to The sprue design and arrangement is analog conventional

Injection molds.

Claims (3)

1. A means for producing active, contour-forming tool components for mold or tool components, characterized in that the means for producing undercuts, sharp edges and ribs is an insert (4,5) 2. means for producing active, contour-forming tool components according to claim 1, characterized in that the insert (4,5) is to be incorporated into the mold halves, that a recording of the inserts (4,5) in the mold halves (2,3) , 3. means for producing active, contour-forming tool components according to claim 1 and 2, characterized in that the inserts (4,5) are composed of individual parts.