PRESS MOLD FOR MANUFACTURING HOLLOW RESIN DIAPHRAGM WITH AN EXTERNAL BEAD ON THE ORIFICE Russian patent published in 2008 - IPC B29C33/00 B29C35/02 

FIELD: the invention refers to the field of manufacturing hollow resin retort-shaped diaphragms with an external collar on the orifice for keeping the diaphragm on the place of putting with the aid of a clamp.

SUBSTANCE: the press mold has the upper, middle and the lower forming plates and a whole core with an air valve. The plates and the core are provided with heaters. The lower plate has a styling site on the inner surface of the article. A forcing chamber with funnels is fulfilled in the upper plate. The middle plate is fulfilled whole and fulfilled so that it serves as an arrester at unloading out of the limits of the press. The press mold has not a removable lock. Keeping the plates in closed position during forming and vulcanization of the article is ensured due to the efforts of the press and the choice of correlation of the square of projection of the forcing chamber and the square of projection of the article on the plane of the cutoff of the form so that opening of the form along the plane of the cutoff and discharge of the surplus of resin take place after complete forming of the article.

EFFECT: increases reliability of the work of the press mold with ensuring quality of ready-made article.

2 dwg