Molding tool for producing particulate foam moldings, has number of computer controlled cut-out layers, a steam chamber, and layer spacings

The tool has computer controlled cut-out layers which are arranged in parallel and which have defined spacings between the layers for the supply and removal of the media. A steam chamber is integral with the tool, and the spacing between the layers is formed by intermediate plates, stamped sections, milled sections or etched depressions. The tool is cooled by flooding with water. The layers are joined by either welding, diffusion welding, adhesion, screwing or soldering. The end plates are structured so that cleansing is simplified, and noise due to rubbing of the foam moldings is reduced The invention relates to a form tool for producing particle foam moulded parts. Said form tool comprises at least one tool part consisting of a finite number of layers which are parallel to each other, at least in segments, the individual layers having contours such that a pile formed by all of the layers defines at least one part of a form cavity which can be filled with expandable foamed material pearls of a thermoplastic material. The inventive form tool also comprises means for supplying and discharging gaseous and liquid heat transfer media. The aim of the invention is to produce particle foam moulded parts faster and with improved surface quality and to achieve uniform bonding of the foam particles, at the same time reducing the energy amount required to produce the moulded parts. To this end, the layers are arranged, at least in their regions which are adjacent to the form cavity, at a defined distance from each other in such a way that they form channels which are outwardly sealed, but are open inside the tool part for the penetration of the gaseous and liquid heat transfer media. Ein Formteilwerkzeug zur Herstellung von Partikelschaumformteilen wird dadurch hergestellt, dass eine endliche Anzahl von rechnergesteuert ausgeschnittenen Schichten zumindest segmentweise parallel angeordnet wird. Die Medienzuführung wird durch definierte Abstände zwischen den Schichten zumindest an den das Werkzeuginnere betreffenden Bereichen erreicht.