Mixing head for two-component polyurethane reaction injection molding machine, includes moving connection unit allowing injection of additional component

摘要

Component supplies (16) are complemented by a sliding connector unit (14) allowing connection with a dosing bore (10) for injection of an additional component. Component supplies (16) are complemented by a sliding connector unit (14) allowing connection with a dosing bore (10) for injection of an additional component. The delivery units for all components and additions are in the same plane, at right angles to the discharge direction from the mixing chamber (2). Supply units (16) for additional components have nozzles (18, 19) at their outlets to the dosing bore (10) in the mixing chamber. There is a vacuum unit to clean this bore. The moving connector slides linearly or rotates with respect to the mixing chamber. It is a slide block with a series of outlets along the line of motion. It moves tangentially to the mixing chamber and the dosing bore (10). The connector is heated, pressed against the dosing bore and is driven by electrical or hydraulic units, relative to the mixing chamber The mixing head and its variants are further detailed in accordance with the foregoing principles.