Cooling system for molds
AssigneeHermann Heye
InventorsKurt Becker, Lothar Schaar
Life of this patent
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Abstract
A mold has a mold cavity centered on an axis and formed with a plurality of arrays of passages each lying at least approximately in a respective plane including the mold axis. Fluid is passed through these passages in order to cool the mold, and fluid may be passed more rapidly or under greater pressure or under lower temperature through some of the passages than through others in order to increase the cooling effect. Similarly inserts may partially insulate some of the passages for cooling some parts of the mold more or less than others. A plurality of temperature sensors each connected to a respective control valve may serve to control the fluid flow through each of the passages or sets of passages for continuous cooling control.
Claims12
A mold arrangement for molding thermoplastic materials, comprising an elongated mold including a wall which defines an elongated mold cavity having a longitudinal axis;
- a plurality of cooling passages each extending lengthwise of said longitudinal axis and each being located over its entire length in various positions in said wall and intersecting a plane extending perpendicular to said longitudinal axis;
- at least two supply means each feeding at least one stream of cooling fluid through at least one of two different ones of said cooling passages to effect heat exchange between said wall and said cooling fluid;
- and means for regulating the degree of heat exchange between said wall and the stream of cooling fluid in at least one of said two passages.
Dependencies are inferred from the claim text.