| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem that a shaping operation becomes unstable due to heat conduction by contact of an injection nozzle with a mold to cause a drawling phenomenon and the like. SOLUTION: The injecting machine has a nozzle head 50 connected to a tip part of an injecting cylinder 15; a nozzle tip 20 which is integrally mounted on the nozzle head 50, has an outer periphery of a tapered surface 52 and protrudes from the nozzle head 50; a gate 12 which is shaped in the nozzle tip 20, and has a base end communicating with a passage of a molten resin in the nozzle head 50 and a terminal end opening to the tip end surface of the nozzle tip 20; a tip holder 22 attached to a support member supporting the base part of the injecting cylinder 15 via a fixed platen 11; and a seal hole 21 which is shaped in the tip holder 22 so that it encloses the tapered surface 52 of the nozzle tip 20 and has an inner surface capable of coming into tight contact with the whole periphery of the tapered surface 52 of the nozzle tip 20 by a relative displacement to the nozzle tip 20. COPYRIGHT: (C)2007,JPO&INPIT
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