Control method for die cast machine

Details Control method for die cast machine Control method for die cast machine

1997-03-19

1999-02-09

Barlow, John

Boots, shoes, and leggings

36447501, 36447502, 36447505, 3644751, 702 84, 702149, G06F 1500

Patent

active

058703055

ABSTRACT:
A control method for die cast machines, which performs multi-step injection speed control depending on a plunger position of an injection cylinder apparatus, the control method comprising the steps of; storing setting values of injection speeds of respective speed steps such as low injection speed and high injection speed and speed change-over plunger positions such as a high speed injection starting position preliminarily in memories; measuring actual values for the injection speed and speed change-over plunger position in actual casting by a speed operation unit and a high speed injection starting position detecting unit; obtaining average values of the actual values in actual castings of a predetermined frequency by an average value operation unit; and correcting control values for the injection speed and the speed change-over plunger position in next casting to be performed.

REFERENCES:
patent: 4563744 (1986-01-01), Tsuboi
patent: 4881186 (1989-11-01), Tsuboi et al.
patent: 5207267 (1993-05-01), Iwamoto et al.
patent: 5455773 (1995-10-01), Frey
patent: 5493503 (1996-02-01), Richards et al.
patent: 5513115 (1996-04-01), Richards et al.

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