The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 07, 1995
Filed:
Sep. 30, 1992
Tsutomu Nagaoka, Kobe, JP;
Masahiko Kashiwa, Kobe, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Abstract
A method of deciding the quality of a SMC workpiece (34) in compression-molding the SMC workpiece (34) on a compression-molding press which compression-molds the SMC workpiece (34) in a cavity (13) formed between a pair of molds (11, 12) by moving at least one of the pair of molds by hydraulic cylinder actuators (4, 7) includes detecting the hydraulic pressure P.sub.O of the working fluid supplied to the hydraulic cylinder actuators (4, 7) upon the arrival of the moving mold (11) at a predetermined position; comparing the detected hydraulic pressure P.sub.O with a predetermined optimum hydraulic pressure P.sub.N to determine the deviation .DELTA.P.sub.O =P.sub.N -P.sub.O ; deciding the quality of the SMC workpiece (34) on the basis of the deviation .DELTA.P.sub.O, and interrupting the compression-molding /peration to avoid producing defective moldings when it is decided that the quality of the SMC workpiece is nonconforming or executing an automatic control operation to add a predetermined pressure correction .DELTA.P corresponding to the deviation .DELTA.P.sub.O to the detected hydraulic pressure P.sub.O.