Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Shaping against forming surface
Patent
1987-10-27
1989-01-10
Hoag, Willard
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Shaping against forming surface
2643289, 425145, 425150, 4253824, 425564, B29C 4580, B29C 4523, B29C 4503
Patent
active
047972459
ABSTRACT:
In an injection molding press of the present invention, a plunger is inserted into a barrel and a material inlet is provided on the rear side of the barrel. A valve seat is provided in the inner periphery of the barrel and a valve body which can be brought into contact with the valve seat is provided on the end of the plunger. In addition, a lengthwise moving unit is aligned with the plunger and, when the plunger is moved lengthwisely, a portion having increasing diameters is brought into contact with a portion having decreasing diameters so that a material passage is opened and closed. A sleeve is engaged in the end of the barrel in such a manner that it can slide in the axial direction of the barrel and has an injection hole at one end. A lengthwise barrel-moving unit is provided on the barrel or the plunger. After a material has been stored in the barrel, the barrel is moved forward so that the material is injected from the injection hole into a mold.
REFERENCES:
patent: 1367196 (1921-02-01), Lucas
patent: 2382655 (1945-08-01), Nichols
patent: 3118184 (1964-01-01), Swenson
patent: 3263276 (1966-08-01), Maier
patent: 3395424 (1968-08-01), Nouel
patent: 3398435 (1968-08-01), Nouel
patent: 3456298 (1969-07-01), Foster et al.
patent: 3464091 (1969-09-01), Bielfeldt
patent: 3600755 (1971-08-01), Cook
patent: 3698845 (1972-10-01), Paulson
patent: 3706827 (1972-12-01), Nott et al.
patent: 3767339 (1973-10-01), Hunkar
patent: 3806294 (1974-04-01), Hehl
patent: 3888393 (1975-06-01), Drori
patent: 4161380 (1979-07-01), Bishop
patent: 4386903 (1983-06-01), Wybenga
patent: 4422842 (1983-12-01), Monnet
Hamburg C. Bruce
Hoag Willard
Jordan Frank J.
Kanesaka Manabu
Ube Industries Ltd.
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