Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Positioning of a mold part to form a cavity or controlling...
Patent
1987-01-20
1988-05-31
Silbaugh, Jan H.
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Positioning of a mold part to form a cavity or controlling...
425451, 4254519, 425589, B29C 4304, B29C 4504, B29C 4567
Patent
active
047479825
ABSTRACT:
Method for adjusting the compression stroke allowance of a vertical injection-compression molding machine including a slide plate mounting thereon a mold clamp cylinder and an upper mold in opposition to a lower mold on a machine bed, and a lift cylinder for moving the slide plate up and down along tie bars, the method including the steps of: downwardly extending a piston rod of a hydraulic cylinder connected to the slide plate to a stroke end: upwardly extending a piston rod of an air cylinder connected to the bed thereof, with the upper and lower molds in contact with each other, until a micrometer at the upper end of the air cylinder piston rod abutts the lower end of the hydraulic cylinder piston rod; fixing the air cylinder piston rod in this state; upwardly retracting the hydraulic cylinder piston rod; setting the micrometer at a desired compression stroke allowance; lowering the hydraulic cylinder piston rod to the stroke end thereof; and lifting the slide plate so as to allow for injection-compression molding operation.
REFERENCES:
patent: 4519763 (1985-05-01), Matsuda et al.
Kondo Hiroaki
Kurumaji Masanobu
Mukai Yoshifumi
Nakatsukasa Susumu
Sano Tsutomu
Bartholomew James
Kabushiki Kaisha Kobe Seiko Sho
Silbaugh Jan H.
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