Foam filling of housings, especially cold storage chambers, with polyurethane foam and foaming plant

摘要

The intermediate transporting section (5) comprises separate transporting systems for the upper tool parts and the lower tool parts. Both transporting systems are synchronized with each other from the opening (42) to the closing (1) station. An Independent claim is made for a process for filling the housings with polyurethane (PU) foam in which upper and lower mold parts are separated in the opening station (42) to allow removal of foamed filled housings. The upper mold parts then move separately from the lower parts and are brought together again in the closing station (1) where empty housings are introduced before the mold parts are locked together for a new cycle. Preferred Features: The number of intermediate positions (11,12,13,14) of the system, including the opening and closing station, for transporting the upper mold parts is one more than the number of stations in the system carrying the lower parts. The transporting system for upper mold parts includes a stroking frame in the opening station for raising upper parts and two carriages above the transporting system in the intermediate positions. One carriage (2) raises, transports and transfers upper mold parts to the other carriage (3) which conveys and transfers them to a stroking frame which delivers them to the mold closing station. The transporting system for upper parts comprises a continuous chain conveyer and that for the lower parts is the same system used to feed molds to the foam filling equipment.