INJECTION PRESS COMPOSITE MOLDING MACHINE

WIPO Patent Application WO/1990/002032

A1

In an injection press molding machine of the present invention, a horizontal injection device (10) is disposed below a fixed die plate (2) of a vertical press device (1), the injection nozzle (10b) of its injection portion (10a) is bent in an L-shape and a valve (10c) for opening and closing a resin passage is disposed in this nozzle. A base (14) of a bed (4) supporting the horizontal injection device (10) slides with the injection nozzle (10b) as the center in accordance with thermal expansion and contraction of the horizontal injection device (10) and the L-shaped injection nozzle (10b) comes into contact with a lower mold (3) at a predetermined surface pressure. Therefore, color changeability of the resin and its purgeability are excellent and since a hot runner is not necessary, an economical and versatile mold can be obtained. Moreover, since the resin is packed using a short resin passage, molded articles having stable quality can be obtained. Even when the horizontal injection device (10) undergoes expansion and contraction, the lower mold (3) is not moved and resin leakage does not occur, either. Since the injection portion (10a) can move outward from below the fixed die plate (2), replacement and inspection of the injection nozzle (10b), the screw, and the like, can be made easily.

HARASHIMA NOBORU (JP)
MIMURA KAZUHIRO (JP)
SASAKI YOSUKE (JP)
OKUBO HIDEAKI (JP)
NOGAWA MAKOTO (JP)
FUJIMOTO SATOSHI (JP)

PCT/JP1989/000860

March 08, 1990

August 23, 1989

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KOMATSU MFG CO LTD (JP)

B29C45/03; B29C45/07; B29C45/17; B29C45/76; B29C45/82; (IPC1-7): B29C45/56; B29C45/20; B29C45/76

JPH06283119A	1994-10-07
JPS61186412U	1986-11-20
JPS61186413U	1986-11-20

See also references of EP 0386265A4

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