Glass press mould turret

摘要

A hollow bodied turret, mounted for rotation about a vertical axis and used to convey glass-forming moulds to various operational positions, has a shelf about its periphery on which, spaced from one another in a circular row, are mould carriers fixed by centrally disposed elements anchoring them to the shelf such that the carriers are free to expand on the shelf radially about these elements. The turret is mounted for rotation about a vertical column 12 and comprises a hollow annular chamber 20 connecting through a passage 44 to a chamber 21, and a shelf 22. Cavitied mould carriers 25 are fixed upon the shelf by centrally located pins 33, the carriers being spaced apart from the side wall 26 of chamber 21 to allow the carriers to freely expand radially. Plates 40, 41 spaced apart by pins 49 and free to expand radially about said pins are placed over the top of the cavity of chamber 21. Cooling air is passed from a manifold 51 through an annular opening 50 in chamber 20 through chamber 21 and into the hollow carrier via a bushing 30 so as to cool the moulds 35-37 seated thereon. Cooling air is also passed through a passage 44 into the space between the plates 40, 41 exhausting through passage 45. The turret is indexed from one position to the next by a reciprocatory piston 71 moving arm 70 which has a square-headed pin 72 movable into a radially extending rectangular slot 73 in the shelf 22. The shelf rides closely adjacent to an anvil 75 at the pressing station and is held against it by a square pin 76 being pushed into slot 73 and also b a piston 83 with a roller 84 moving up against a cam 82 on a rocker 80 which forces an element 81 down on to the upper surface of a lip on the shelf 22.