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To meet the demand for higher accuracy and greater stability of injection molding machines, we developed a clamp force detecting system and a clamp force feedback control system, and equipped the SE-DU and SEHD/HS series with the new systems as standard. We have developed the following two control methods as a function to control the clamp force feedback.
· Clamp force feedback control for use in clamp force adjustment
· Clamp force feedback control for use in automated operation
Formerly, it was difficult to accurately adjust the clamp force for molds. The use of the new systems allows the clamp force to be automatically adjusted so that the set value of the clamp force matches the actually detected value. In addition, the new systems enable even a mold thermally expanded due to a temperature rise to be clamped without an increase in the clamp force, thus allowing automatic operation to be continued. This report describes the clamp force detection system and the clamp force feedback control system.
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