Apparatus for the production of molded skins and bodies of plastic material
First Claim
1. An apparatus for the production of molded shells and bodies from plastic material, comprising;
- a mold which is in the form of an electroplate and having an internal contour which provides the mold shaping action and which is in the form of a double-walled body for feed of a heating and cooling medium;
a box which is sealingly fitted to the mold and which contains plastic material; and
a means for rotating the mold and the box, comprising at a rear wall of the mold which is remote from an inside wall of the mold, the double-walled hollow body having a plurality of intake and discharge openings for the heating and cooling medium, such that the intake openings on the one hand and the discharge openings on the other hand are each connected in parallel to a feed system and a discharge system respectively, and that a total discharge cross-section is greater than a total feed cross-section.
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Accused Products
Abstract
An apparatus for the production of molded shells and bodies of plastic material by a rotational molding procedure within an electroplate mold includes a double-walled hollow body which is heated up and cooled down by a heating and cooling medium. A box which contains plastic material can be fitted on to the mold. The mold and the box are jointly pivotable so that the plastic material can pass into the mold and fuse at the wall of the mold. At its rear wall, which is remote from the internal contour which produces the molding action, the double-walled hollow body has a multiplicity of intake and discharge openings for the heating and cooling medium so that heating and cooling can be effected specifically and quickly. The total discharge cross-section is greater than the total feed cross-section whereby the hollow body remains substantially pressure-less. The mold may simultaneously perform a rotary movement about an axis, a pivotal movement about a second axis and translatory movements in the direction of the axis of rotation, in a freely programmable fashion.
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Citations
8 Claims
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1. An apparatus for the production of molded shells and bodies from plastic material, comprising;
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a mold which is in the form of an electroplate and having an internal contour which provides the mold shaping action and which is in the form of a double-walled body for feed of a heating and cooling medium; a box which is sealingly fitted to the mold and which contains plastic material; and a means for rotating the mold and the box, comprising at a rear wall of the mold which is remote from an inside wall of the mold, the double-walled hollow body having a plurality of intake and discharge openings for the heating and cooling medium, such that the intake openings on the one hand and the discharge openings on the other hand are each connected in parallel to a feed system and a discharge system respectively, and that a total discharge cross-section is greater than a total feed cross-section. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification