METHOD AND DEVICE FOR FORMING UPPER AND LOWER PARTS OF BOXLESS MOULD AND METHOD OF REPLACEMENT USED BY DOUBLE-SIDED MODELING BOARD FOR THAT PURPOSE

摘要

FIELD: metallurgy.;SUBSTANCE: double-sided modeling board is located between the upper and lower molding frames that are situated horizontally and equipped with entrances for the foundry sand. The upper and lower molding spaces are provided by means of introducing of the lower and upper condensing facilities in the upper and lower molding frames. Then the pair of the upper and lower molding frames are turned round so that they become situated vertically, while their entrances for the foundry sand become located up at the top. The sand is then introduced in both upper and lower molding spaces where it has to be further condensed. The pair of the upper and lower molding frames are rotated again so that they proceed to be located horizontally. The double-sided modeling board is removed. When it is replaced the modeling board must be lifted toward the upper molding frame located near the condensing mechanism. The second double-sided modeling board also needs to be lifted towards the upper molding frame situated near the retrieval mechanism. The two modeling boards are turned round by way of rotating the mechanism. The boards are to be moved after the rotary motion.;EFFECT: achievement of the quality of casting forms and reduction in sizes of moulding machine.;18 cl, 20 dwg