| 摘要 |
PURPOSE: A disc-molding mold is provided to reliably align a stationary-side mold assembly and a movable-side mold assembly with each other and involving no scuffing of a guide post. CONSTITUTION: A disc-molding mold includes a first support plate(15) disposed at the stationary side of the mold; a first mirror-surface disc(16) attached to the first support plate(15); a first guide ring(19) disposed radially outside the first mirror-surface disc(16) and attached to the first support plate; a second support plate(35) disposed at the movable side of the mold; a second mirror-surface disc(36) attached to the second support plate(35); a second guide ring(38) disposed radially outside the second mirror-surface disc and attached to the second support plate; a guide post(84) attached to either the first or second guide ring(19,38) and projecting toward the other guide ring; and a guide bush(88) attached to the other guide ring and adapted to guide the guide post(84). The first and second guide rings(19,38) each have a temperature control medium passage(95,96) formed therein in order to allow passage of a temperature control medium. Thus, the thermal expansion of the first guide ring is made equal to that of the second guide ring.
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