Injection molding press

Details Injection molding press Injection molding press

B - Operations, Transporting

29

C

18/698

B29C 45/53 (2006.01) B29C 45/46 (2006.01)

Patent

CA 1279455

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.

550560

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