Apparatus for injection molding of plastic materials
AssigneeINGLASS S.p.A.
InventorsMassimo Rossi, Massimo De Nadai, Massimo Bisetto
Life of this patent
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Abstract
Apparatus for injection molding of plastic materials having a mold including at least one plate, a hot runner distributor of the fluid plastic material, at least one injector and an electric motor for controlling opening and the closing of the injector, supported by the distributor and whose cooling is carried out by means of thermal exchange contact with the plate. Provided for the cooling of the electric motor is at least one cover made of thermally conductive material at least partly surrounding the electric motor in a slidable manner and it is maintained in thermal exchange contact with the plate by means of a magnetic or an electro-magnetic force.
Claims19
An apparatus for injection molding of plastic material comprising a mold, at least one plate, a hot runner distributor of the fluid plastic material, at least one injector for injecting the plastic material from the hot runner distributor into the mold, and an actuator for controlling opening and closing of the at least one injector and including an electric motor, wherein the electric motor has a housing and cooling thereof is performed by means of thermal exchange contact with said at least one plate, wherein for the cooling of the electric motor there is provided a cover made of thermally conductive material at least partly surrounding the housing of the electric motor in a slidable fashion to provide thermal exchange between the housing and the cover to cool the actuator, the cover maintained in thermal exchange contact with said at least one plate by a magnetic force, wherein said cover has at least one planar wall defining a surface of contact with said at least one plate, and wherein a radial gap is provided between said cover and said housing of the electric motor.
Dependencies are inferred from the claim text.