초록 ▼

Apparatus for use in the reaction moulding of plastics materials in which two liquid components are mixed in a screw type or similar mixer. Mixed material is ejected or poured into a mould via a passageway which latter is one of a plurality of similar passageways arranged radially around a wheel. Ea

Apparatus for use in the reaction moulding of plastics materials in which two liquid components are mixed in a screw type or similar mixer. Mixed material is ejected or poured into a mould via a passageway which latter is one of a plurality of similar passageways arranged radially around a wheel. Each passageway remains in the lowermost (pouring) position for a period of time during which it is reckoned to remain in a satisfactory working condition, and the wheel is then automatically indexed to bring the next passageway into operation. Cleaning structure is employed to clean out the used passageways after a period of time known by experience to be sufficient for the material to be at least partially cured. In this way the passageways can be re-used in a continuous production machine. The length of time that each passageway remains in the pouring position is found from experience of the particular materials being used; it is found in practice that the passageway remains in a satisfactory working condition for about 60 seconds.

대표청구항 ▼

Apparatus for the reaction moulding of plastics materials, said apparatus comprising means for mixing together into a curable mixture liquid plastics components to be moulded, said mixing means having an outlet orifice through which the liquid components emerge, a pouring member formed with two or m

Apparatus for the reaction moulding of plastics materials, said apparatus comprising means for mixing together into a curable mixture liquid plastics components to be moulded, said mixing means having an outlet orifice through which the liquid components emerge, a pouring member formed with two or more passageways, at least one of which, at any one time, is in an operating position in which it is operable to transfer the material therethrough from the mixing means into a mould, means for indexing the passageways at regular intervals such that, at any one time, at least one passageway is out of use, and means for cleaning cured accumulated portions of the liquid plastics components from the at least one passageway which is out of use so that after such cleaning, the at least one passageway become available for re-use.