Moulding insert for moulding machines
AssigneeKOBRA Formen GmbH
InventorsRudolf Braungardt, Erwin Schmucker
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Abstract
The invention relates to the production of multi-layered concrete moulded bodies in a moulding machine comprising a moulding insert having a plurality of mould cavities. Relief structures are arranged in the lateral walls of the mould cavities and are dimensioned in such a way that projections formed on the moulded body when the filled concrete material is compacted engage in the relief structures, thereby creating sufficient retaining force for compensating the net weight of the moulded body and enabling the moulded bodied to be extracted from the mould cavities as a result of additional demoulding forces and causing elastic deformation of the projections without any material being cut off from the projections.
Claims12
Molding insert (FE) having one or more mold cavities (FN), for use in molding machines, for the production of compacted molded bodies (FS), particularly concrete molded stones, and their deposit in a multi-layer arrangement, whereby the device contains pressure devices for pushing the compacted molded bodies out of the molding insert, in the downward direction, wherein the walls of the mold cavity have relief structures, with depressions that possess holding flanks (HF) that drop down towards the center of the mold cavity, whereby the relief (RS) is coordinated with the volume of the mold cavity and the material of the molded body, in such a manner that on the one hand, the inherent weight of the molded body is not sufficient to de-mold the latter from the mold cavity and, on the other hand, the molded body can be de-molded from the mold cavity, under the influence of the pressure device, without shearing off the projections (GR) that are located in depressions of the relief, on lateral surfaces of the molded body.
Dependencies are inferred from the claim text.