method and device for the manufacture of sheet metal pressings from thermosetting plastics.

摘要

1. Method for the production of pressed parts (9), in which method moulding mass is introduced into a former (2/3) of an opened mould and subsequently reshaped under pressure, through forward travel of an upper die (5) slidingly engaging free of play into the former, wherein excess moulding mass forms a press flash (10), which is driven out through escape openings (4/4b) branching off in targeted manner laterally in the former and which on removal from the mould is sheared off at the respective inside edge of the escape opening (4/4b) lying towards the pressed part (9), characterised thereby, that a thermosetting synthetic material is plasticised and set as moulding mass under the influence of pressure and heat in the former (2/3) and that a change in the flow resistance of the plasticised moulding mass and thereby a control of the internal mould pressure is brought about by means of adjustable cross-sectional variation of the escape openings (4, 4b).