US 12,168,317 B2
Control device for injection molding machine
Hajime Ono, Chiba (JP)
Assigned to SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed by SUMITOMO HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Nov. 14, 2022, as Appl. No. 18/055,034.
Claims priority of application No. 2021-204325 (JP), filed on Dec. 16, 2021.
Prior Publication US 2023/0191677 A1, Jun. 22, 2023
Int. Cl. B29C 45/80 (2006.01); B29C 45/76 (2006.01)
CPC B29C 45/80 (2013.01) [B29C 2045/7606 (2013.01); B29C 2945/761 (2013.01); B29C 2945/76167 (2013.01); B29C 2945/76187 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A control device for an injection molding machine, the control device comprising:
a detecting part configured to detect a rotation position of a measurement motor,
a storage part configured to store a first rotational position indicating a rotational position of the measurement motor when control of the measurement motor is stopped,
a determining part configured to determine, based on the first rotational position and a second rotational position indicating the position of the measurement motor when the control of the metering motor is turned on, whether or not an operation of removing or attaching a screw that rotates in accordance with the measurement motor has been performed between a time when the control of the measurement motor is stopped and the time when the control of the measurement motor is turned on.