Injection pressure monitoring method and apparatus

Details Injection pressure monitoring method and apparatus Injection pressure monitoring method and apparatus

1986-02-12

1987-07-14

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

Controlling fluid pressure in direct contact with molding...

425149, B29C 4792

Patent

active

046801510

ABSTRACT:
A method of monitoring data concerning injection pressure in an injection molding machine is disclosed in which a multipoint sampling technique is used to acquire and store injection pressure reference data in the form of a time varying data curve for a first injection molding cycle. The reference data is used to form upper allowance data which is stored in the form of a time varying data curve having a constant offset from the reference data curve. The upper allowance data is then compared with injection pressure data acquired using a multipoint sampling technique during a second injection molding cycle and an alarm is issued if the data acquired in the second injection molding cycle exceeds the upper allowance data.

REFERENCES:
patent: 4207047 (1980-06-01), Kolb et al.

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