Injection molding information management support device and injection molding machine

Patent metadata

Field	Value
Publication number	US-2021107194-A1
Application number	US-202017010234-A
Country	US
Kind code	A1
Filing date	Sep 2, 2020
Priority date	Oct 10, 2019
Publication date	Apr 15, 2021
Grant date	—

Abstract

To easily check a changing trend of machine state data on an injection molding machine during a predetermined period and/or in every predetermined period. An injection molding information management support device for managing machine state data regarding a machine state in operation of an injection molding machine during a predetermined period and/or in every predetermined period includes a machine state data acquisition unit that acquires a machine state data value for each molding cycle in the injection molding machine, and a frequency distribution data recording unit that converts the machine state data value into a preset class data value and records the class data value in a storage unit.

First claim

What is claimed is:

1 . An injection molding information management support device for managing machine state data regarding a machine state in operation of an injection molding machine during a predetermined period and/or in every predetermined period, comprising:
an accessibly-connected storage unit; and a control unit, wherein the control unit includes a machine state data acquisition unit that acquires a machine state data value for each molding cycle in the injection molding machine, and a frequency distribution data recording unit that converts the machine state data value acquired by the machine state data acquisition unit into a class data value indicating a preset class of the machine state data value and records a frequency during the predetermined period and/or in every predetermined period in the storage unit.

2 . The injection molding information management support device according to claim 1 , wherein the machine state data value is information that includes at least any of a load factor of each drive unit of the injection molding machine, a peak pressure, clamping force, a temperature of each drive unit, cycle time, injection time, and measurement time and that is obtained in cycle operation of the injection molding machine.

3 . The injection molding information management support device according to claim 1 , wherein
the frequency distribution data recording unit further categorizes the class data value converted from the machine state data value based on a preset condition, produces categorical frequency distribution data for each category based on a group of categorized class data values, and records the categorical frequency distribution data.

4 . The injection molding information management support device according to claim 3 , wherein the condition includes, regarding a molding cycle according to the machine state data value, at least any of a mold used in injection molding, a molding condition, a range of a cumulative shot number, and a molding period.

5 . The injection molding information management support device according to claim 1 , wherein
the frequency distribution data recording unit further deletes, after having recorded the frequency in the storage unit, the machine state data value for each molding cycle in the injection molding machine, the machine state data value being acquired by the machine state data acquisition unit.

6 . The injection molding information management support device according to claim 1 , further comprising:
a cumulative frequency monitoring unit, wherein when the frequency distribution data recording unit converts the machine state data value acquired by the machine state data acquisition unit into the class data value indicating the preset class of the machine state data value and records the frequency during the predetermined period and/or in every predetermined period in the storage unit, the cumulative frequency monitoring unit
monitors, based on a threshold for a cumulative frequency set in advance for each class, whether or not the cumulative frequency at least at one class exceeds the threshold set for the one class.

7 . The injection molding information management support device according to claim 1 , further comprising:
a display unit; and an output control unit, wherein the output control unit outputs, to the display unit, frequency distribution based on the class data value recorded in the storage unit in a form of a histogram, and/or sorts the class data value converted from the machine state data value in descending order of frequency and outputs, to the display unit, data with a Pareto chart in which a line graph of a cumulative relative frequency is on the histogram.

8 . The injection molding information management support device according to claim 7 , wherein the output control unit outputs a file as the output data.

9 . The injection molding information management support device according to claim 7 , wherein the output control unit displays histograms generated for each category on the display unit with the histograms overlapping with each other, or displays the histograms next to each other.

10 . The injection molding information management support device according to claim 1 , wherein
the injection molding information management support device is communicably connected to one or more injection molding machines, and manages the machine state data for each of the one or more injection molding machines.

11 . The injection molding information management support device according to claim 10 , wherein in a case where the injection molding machines perform molding with an identical mold and an identical machine specification under an identical operation condition, a probability of occurrence of failure in each injection molding machine is determined based on the frequency distribution obtained from each injection molding machine.

12 . An injection molding machine comprising: the injection molding information management support device according to claim 1 .

Assignees

• Fanuc Corp

Inventors

• Kusakabe Hironori
• Maruyama Junpei
• Tajika Masaya

Classifications

• G05B19/4063

  Monitoring general control system (G05B19/4062 takes precedence) · CPC title

• G05B2219/45244

  Injection molding · CPC title

• B29C45/76 Primary

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

• B29C45/17

  Component parts, details or accessories; Auxiliary operations · CPC title

• B29C2945/7604

  Temperature · CPC title