Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
INJECTION CONTROLLER FOR INJECTION MOLDING MACHINE
Document Type and Number:
Japanese Patent JP2628260
Kind Code:
B2
Abstract:

PURPOSE: To keep the state of filling and fill of a molten resin into a mold constant.
CONSTITUTION: The reference injection position of an injection cylinder 16 made to correspond to an elapsed time after a resin begins to be injected is stored previously in a reference injection-position storage section 91, and a reference injection-speed arithmetic section 93 corrects reference injection speed obtained from the reference injection position on the basis of the deviation of the actual position of injection of the infection cylinder 16 detected by a position sensor 24 and the reference injection position. 1 An injection-speed control section 96 acquires an injection-speed control signal from the actual speed of infection obtained from the detecting signal of the position sensor 24 by an actual injection-speed arithmetic section 95 and the corrected speed of injection output from an injection-speed correcting section 9 and outputs the signal. When a changeover-signal output section 82 detects that injection pressure reaches changeover pressure set to a changeover-pressure setting section 81 from the detecting signal of an oil pressure detector, on the other hand, a switch circuit 72 is changed over and processes transfer to a dwell process.


Inventors:
田川 才憲
Application Number:
JP1992000226444
Publication Date:
July 09, 1997
Filing Date:
August 03, 1992
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
宇部興産株式会社
International Classes:
B29C45/50; B29C45/57; B29C45/76; B29C45/77; (IPC1-7): B29C45/77; B29C45/50
Domestic Patent References:
JP539858A
JP3178416A
JP2155556A
Attorney, Agent or Firm:
村上 友一 (外1名)