FIELD: process engineering.
SUBSTANCE: core-sand mould is used in claimed method. Proposed method increases output due to preventing admixture of dust caused by attrition. In compliance with proposed method, stationary mould 2 and movable mould 3 are arranged opposite each other, while sliding plate 3d jointed with movable plate on movable mould comes in contact by spring 3c with closing joint with mould 2. Movable mould 3 is fed from outside after injecting polymer into cavity 4 to injection moulding in pressing polymer R that fills cavity 4 by rod 3g fitted in movable mould 3 and passing through sliding plate 3d. Note here that polymer film F is arranged between stationary mould 2 and sliding plate 3d, while one side of polymer R in cavity 4 is pressed by rod 3d through film F. Forming device comprises stationary mould 2 and movable mould 3 arranged opposite each other, sliding plate 3d jointed via spring with movable plate on movable mould and contacting with closing joint of stationary mould by spring. Rod arranged in movable plate passes through sliding plate to slide relative the latter to press one surface of polymer forced into stationary mould cavity. Thermosetting polymer film F is located between stationary mould and movable mould to make one polymer surface in said cavity and rod get separated in forming. Movable mould and sliding plate are detached and sealed by sealing element.
EFFECT: ruling out contamination by dust, higher efficiency, longer life.
6 cl, 18 dwg
