Method for producing plastic components that can withstand high mechanical loads in conformity with the final contour

Abstract

The present invention relates to a method for producing a plastic component that can withstand high mechanical loads in conformity with the final contour. In order to alleviate the disadvantages known in the prior art, a method of the above-mentioned type for producing a plastic component that can withstand high mechanical loads in conformity with the final contour is proposed, in which method, in a first step, in a closed comprising female mold (1) and the mold of the male mold (2) carry out an injection process with a thermoplastic plastic component (K1), in which a high-viscosity thermoplastic plastic component (K1) is used so that the female mold (1 ) and the mold parting surface between the male mold (2) to achieve sufficient sealing of the mold or cavity (4) relative to the very low-viscosity molding material (K2) used in the second step, wherein, in the second step The cavity (4) is previously enlarged so that after injection and hardening of the very low-viscosity molding material (K2), the seal made of the plastic component (K1) is fixed on or in the molding material (K2) to the extent that so that they form composite components.

Description

technical field [0001] The invention relates to a method for producing a plastic component that can withstand high mechanical loads in conformity with the final contour. Background technique [0002] The plastic component, which can withstand high mechanical loads, is preferably made of a thermosetting plastic material. These materials are characterized by very dilute liquid or low-viscosity reactive materials during the injection process, which leads to a greater tendency for burrs to form at least on the parting surfaces of the mold between the individual components of a corresponding injection mold. [0003] Thermosetting plastic materials are further mechanically improved in combination with fibers as so-called fiber composite components. Fiber composite components, together with a bettend matrix and reinforcing fibres, generally consist of only two main components. Through the interaction of these two components with one another, the fiber composite component achieves...

AI Technical Summary

Problems solved by technology

[0008] A further disadvantage of the known method is that during the injection the low-viscosity reactive components on the mold wall can advance when the tolerance between the inserted preform and the mold edge is too large (Voreilen)

However, this method developed by DLR (German Aerospace Center) and also known as "Evo RTM" for producing complex CFK (carbon fiber reinforced composite) structures as a large number of mass-produced components close to the final contour is very expensive. high and therefore only suitable for small piece counts as they occur, for example, in the aviation industry

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