INJECTION MACHINE AND METHOD OF PRODUCING PLASTIC PRODUCTS Russian patent published in 2009 - IPC B29C45/72 B29C45/17 B29C35/16 B29C49/64 

FIELD: mechanics, metallurgy.

SUBSTANCE: proposed machine incorporates multiple polymer material injection mold units, a knee-and-column device to extract workpieces from the molds furnished with guillotine-type gripping elements that travel in between two halves of the open mold to grip the workpiece and the external position. The machine is also provided with a cooling turret with the surfaces accommodating a set of cups intended for conditioning the workpieces, which moves about its horizontal axis and reciprocates upward between the top position above the extraction knee-and-column device receiving the work pieces and the lower position corresponding the extraction table for workpieces. The extraction table features lengthwise cuts with narrowing tooth-like sections intended for gripping the workpieces above the ring and for extracting them from the cups. The method of injection moulding using the proposed machine comprises the following operations, i.e. a) injection of polymer molten material into two-halves mold, b) solidification of products till preset solidification degree that influences the injection cycle, c) opening the mold halves, d) moving the extraction knee-and-column device in the space between the mold halves, e) withdrawing the products from the mold with the help of the aforesaid device, f) moving the extracted products out of the mold halves space, g) releasing the products into the cups of the cooling turret, the cups being arranged on two opposite sides, h) cooling the products till preset temperature, i) turning the turret about horizontal axis and moving it downward, j) extracting the products from the cups with the help of gripping elements arranged on the extraction table.

EFFECT: high efficiency, lower costs because of simplicity and reliability of proposed machine.

11 cl, 39 dwg