DEVICE FOR COMPOSITE MATERIALS SETTING Russian patent published in 2011 - IPC B29C43/30 B29C70/44 B29D22/00 

FIELD: machine building.

SUBSTANCE: device for composite materials setting consists of case with flange and of elastic diaphragm installed in case; collar of diaphragm is pressure tight attached to flange of case with fit ring. Holders of elastic diaphragm positioning are arranged uniformly along perimetre on surface of the case flange contacting the collar of the elastic diaphragm. The holders correspond to vertical directed pointed pins. There is also formed a row of rounded circular lugs alternating with rounded circular recesses. On surface of the fit ring contacting the collar of the elastic diaphragm there are made hooks made in form of a circular rack with pointed teeth directed to the collar of the elastic diaphragm. Holes opposite to each holder on surface of the case flange are made on surface of the fit ring contacting the collar of the elastic diaphragm. Also, holes in the fit ring are made as blind channels. Hooks of the fit ring are set off in radial direction relative to lugs on the case flange. The holders of elastic diaphragm position are equipped with a threaded section on side opposite to the pointed pins and are screwed with it into threaded holes made on the flange of the case.

EFFECT: high reliability of operation due to raised strength of attachment of elastic diaphragm to flange of case at simultaneous simplification of device assembly; possibility to fabricate rank of extremely critical items of composite materials, including large size high quality bells of nozzle units of rocket engines for solid fuel.

5 cl, 2 dwg