Injection molding analysis method and injection molding analysis system

Patent metadata

Field	Value
Publication number	US-2020307055-A1
Application number	US-202016819613-A
Country	US
Kind code	A1
Filing date	Mar 16, 2020
Priority date	Mar 27, 2019
Publication date	Oct 1, 2020
Grant date	—

Abstract

A method of generating the analysis conditions of an injection molding machine by using at least one computer, the at least one computer executing the steps of: selecting one of injection molding machines, each being associated with a predetermined correction amount of injection molding; generating a second analysis condition for the selected injection molding machine on the basis of an acquired first analysis condition and the predetermined correction amount of the selected injection molding machine; and outputting the generated second analysis condition.

First claim

What is claimed is:

1 . An injection molding analysis method of generating an analysis condition of an injection molding machine by using at least one computer,
the at least one computer executing the steps of: selecting one of injection molding machines, each being associated with a predetermined correction amount of injection molding; generating a second analysis condition for the selected injection molding machine on the basis of an acquired first analysis condition and the predetermined correction amount of the selected injection molding machine; and outputting the generated second analysis condition.

2 . The injection molding analysis method according to claim 1 , wherein
subsequent to the step of outputting the second analysis condition, the at least one computer further executes the step of analyzing, on the basis of the second analysis condition, injection molding performed by the selected injection molding machine.

3 . The injection molding analysis method according to claim 1 , wherein
the predetermined correction amount is calculated on the basis of a difference between a predetermined physical quantity measured on a predetermined part of the selected injection molding machine and an analytical value for the predetermined physical quantity of the predetermined part of the selected injection molding machine.

4 . The injection molding analysis method according to claim 1 , wherein
the predetermined correction amount is calculated on the basis of a feature amount of a predetermined physical quantity measured on a predetermined part of the selected injection molding machine and a feature amount of an analytical value for the predetermined physical quantity of the predetermined part of the selected injection molding machine.

5 . The injection molding analysis method according to claim 3 , wherein
the predetermined part is a part in a mold provided in the selected injection molding machine, and the predetermined part is at least one part configured on a flow path extending from a material flow inlet of the mold to a cavity of the mold.

6 . The injection molding analysis method according to claim 3 , wherein
the predetermined physical quantity includes at least a pressure and a temperature.

7 . The injection molding analysis method according to claim 4 , wherein
the feature amount of the predetermined physical quantity includes at least a maximum value of a pressure and a maximum value of a temperature.

8 . The injection molding analysis method according to claim 1 , wherein
the injection molding machine is also associated with a threshold value of a clamping force of the injection molding machine in addition to the predetermined correction amount, the computer further executes, subsequent to the step of generating the second analysis condition, the step of calculating a necessary clamping force on the basis of the second analysis condition and comparing the calculated necessary clamping force and the threshold value, and if it is determined that the necessary clamping force is larger than the threshold value in the step of comparing the necessary clamping force and the threshold value, the determination is outputted.

9 . The injection molding analysis method according to claim 2 , wherein
the injection molding machine is also associated with a threshold value of a clamping force of the injection molding machine in addition to the predetermined correction amount, the computer further executes, subsequent to the step of analysis based on the second analysis condition, the step of comparing a necessary clamping force obtained from the analysis based on the second analysis condition and the threshold value, and if it is determined that the necessary clamping force is larger than the threshold value in the step of comparing the necessary clamping force and the threshold value, the determination is outputted.

10 . The injection molding analysis method according to claim 8 , wherein
the threshold value is configured on the basis of an output value of a mold position sensor that detects a position of a mold parting face.

11 . The injection molding analysis method according to claim 8 , wherein
the threshold value is configured on the basis of an output value of a mold position sensor that detects a position of a mold parting face and an output value of a pressure sensor that detects a pressure generated in the mold.

12 . The injection molding analysis method according to claim 1 , wherein
the first analysis condition is an analysis condition inputted to the injection molding machine, and the second analysis condition is an analysis condition inputted to a flow analysis system that conducts a flow analysis on the injection molding machine.

13 . An injection molding analysis system that generates an analysis condition of an injection molding machine, comprising:
a correction amount storage unit that stores a predetermined correction amount of injection molding of each injection molding machine; a first analysis-condition storage unit that stores an acquired first analysis condition; a correction amount acquisition unit that acquires, from the correction amount storage unit, the predetermined correction amount corresponding to the selected injection molding machine; and a correction unit that corrects the first analysis condition to a second analysis condition for the selected injection molding machine on the basis of the first analysis condition acquired from the first analysis condition storage unit and the predetermined correction amount.

14 . The injection molding analysis system according to claim 13 , wherein
the correction amount storage unit also stores a threshold value of a clamping force of the injection molding machine in addition to the predetermined correction amount, and the correction unit calculates a necessary clamping force on the basis of the second analysis condition, compares the calculated necessary clamping force and the threshold value, and outputs a determination if it is determined that the necessary clamping force is larger than the threshold value.

Assignees

• Hitachi Ltd

Inventors

• Shimada Ryotaro
• Arai Satoshi
• Yamaguchi Kei

Classifications

• B29C45/76 Primary

  Measuring, controlling or regulating {(measuring in general G01; controlling or regulating in general G05)} · CPC title

• B29C2945/76949

  using a learning system, i.e. the system accumulates experience from previous occurrences, e.g. adaptive control · CPC title

• B29C45/766 Primary

  the setting or resetting of moulding conditions, e.g. before starting a cycle · CPC title

• B29C45/7693

  using rheological models of the material in the mould, e.g. finite elements method · CPC title

• B29C45/77 Primary

  of velocity or pressure of moulding material · CPC title