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US 5,792,395 AGranted
Plasticization control method for an injection molding machine
AssigneeFanuc Corporation
InventorsSusumu Ito, Katsuyuki Yamanaka
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AssigneeFanuc Corporation
InventorsSusumu Ito, Katsuyuki Yamanaka
Estimating the term…
A plasticization control method for an injection molding machine in which the plasticized state of resin in an injection cylinder is controlled in measuring based on the detected rotating force of a screw. A reference screw rotating force C or F required for desired measuring operation is determined. Using the reference screw rotating force C or F as a reference, upper and lower limits D and E of an allowable screw rotating force range, in which measuring can be performed normally, are set for each of screw positions, and then stored as an allowable value file. The rotating force V acting on the screw during measuring operation is successively detected. If the rotating force V is not between the upper and lower limits D and E of the allowable range relating to the current position of the screw, it is judged that plasticization is abnormal and an abnormality alarm is outputted. Thus, insufficient heating of the injection cylinder, intrusion of foreign matter in the molding material, insufficient supply of resin, etc. can surely be detected.
A plasticization control method for an injection molding machine in which resin in an injection cylinder is plasticized and measured by rotating a screw, the method comprising the steps of:
A plasticization control method for an injection molding machine in which resin in an injection cylinder is plasticized and metered by rotating a screw, the method comprising the steps of:
A plasticization control method for an injection molding machine in which resin in an injection cylinder is plasticized and metered by rotating a screw, the method comprising the steps of:
Dependencies are inferred from the claim text.