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US 10,201,923 B2Granted
Injection molding machine including mold rotating device
AssigneeFanuc Corporation
InventorHajime Oono
Life of this patent
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Abstract
A first rotation controller that rotates a rotary table by feedback control based on a rotation amount detected by a rotation amount detection unit and a second rotation controller that rotates the rotary table by the feedback control based on a distance detected by a distance detection unit are included and rotation control by the first rotation controller is switched to that by the second rotation controller at a predetermined rotation angle.
Claims3
An injection molding machine, comprising:
- a motor having a rotation amount detection unit;
- a mold rotating device driven by the motor and having a rotary table on which a mold is to be mounted;
- a detected portion provided in the rotary table;
- a distance detection unit configured to detect a distance to the detected portion;
- a first rotation controller configured to perform rotation control of the rotary table by feedback control based on a rotation amount detected by the rotation amount detection unit;
- a second rotation controller configured to perform rotation control of the rotary table by the feedback control based on the distance detected by the distance detection unit;
- a control device configured to, at a predetermined rotation angle of the rotary table between a rotation start and a rotation end of the rotary table, switch from the rotation control by the first rotation controller to the rotation control by the second rotation controller;
- and
- a reference correction unit configured to make reference corrections of distance detection by the distance detection unit based on a positional relationship of the mold when the mold is closed.
6 more elements
Dependencies are inferred from the claim text.