Cooling system for parison plunger

Details Cooling system for parison plunger Cooling system for parison plunger

C - Chemistry, Metallurgy

03

B

49/40

C03B 9/38 (2006.01) C03B 9/193 (2006.01) C03B 11/12 (2006.01)

Patent

CA 1280604

THE ABSTRACT A parison mold portion (20) of a glassware forming machine, of the type having a parison mold (22) and a pari- son plunger (240), is provided with means for cooling the parison plunger (240). The means for cooling the parison plunger (240) includes a central cooling passage (258) that communicates with an end surface (246) and that extends longitudinally toward a nose (254), and a plurality of um- brella passages (162) that communicate with the end surface (246) radially outward from the central cooling passage (258), that are circumferentially spaced, and that inter- cept the central cooling passage (258) proximal to the nose (254). A tube (264) is inserted into the central cooling passage (258), is longitudinally adjustable, and is effec- tive to adjustably determine the longitudinal position wherein the umbrella passages (162) communicate with the central cooling passage; whereby cooling of portions of the parison plunger (240) proximal to the nose (254) ver- sus portions distal from the nose (254), is selectively controlled.

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