METHOD FOR KEEPING OF MOULD FROM SEPARATION AT MOLDING OF PRODUCTS Russian patent published in 2002 - IPC

FIELD: molding. SUBSTANCE: the half-moulds are kept from separation at blow-molding by application of impressed forces to the half-moulds. The half-moulds are kept at the minimum distance from each other for provision of the minimum wear of the half-mould conjugated surfaces due to the use at least of one electromagnet whose core is coupled to one half-mould, and the armature - to the other. The force of armature breaking-off from the core exceeds the resultant force of pressure on the walls of the product being blow-molded. EFFECT: enhanced reliability of keeping of the mould at a reduced power consumption and specific quantity of metal per structure, as well as reduced wear and destruction of conjugated surfaces of half-moulds. 1 dwg