Method of stopping a die of an injection molding machine and a d

Details Method of stopping a die of an injection molding machine and a d Method of stopping a die of an injection molding machine and a d

1995-03-01

1996-12-10

Warden, Jill

Plastic and nonmetallic article shaping or treating: processes

With measuring, testing, or inspecting

264 405, 2643281, 425150, 4254501, 425589, B29C 4500

Patent

active

055827829

ABSTRACT:
An injection molding machine has a die clamping apparatus which effects die closing, die clamping and die opening. A die open-side stop position can be accurately set without using any restricting mechanism such as a mechanical stopper and a position setting device. In addition to the die open-side stop position, a die opening operation stop position is set at a position offset by a preset amount from the die open-side stop position in a clamping direction. A deceleration start position is also set at a position offset by a preset amount from the die opening operation stop position in the clamping direction. When the movable die reaches the deceleration start position, a setting value of die opening speed is lowered. When the movable die reaches the die opening operation stop position, the operation for die opening is stopped so as to stop the movable die. The die opening operation stop position is changed in accordance with a difference between the actual stop position of the movable die and the die open-side stop position.

REFERENCES:
patent: 4131596 (1978-12-01), Allen
patent: 4281977 (1981-08-01), Farrell
patent: 4301100 (1981-11-01), Farrell
patent: 4696632 (1987-09-01), Inaba
patent: 4726920 (1988-02-01), Yokota
patent: 4741685 (1988-05-01), Inaba et al.
patent: 4846654 (1989-07-01), Neko
patent: 4966738 (1990-10-01), Inaba et al.
patent: 5059365 (1991-10-01), Hertzer et al.

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