SUMITOMO HEAVY INDUSTRIES TECHNICAL REVIEW
Fully Electric Double-shot Injection Molding Machine
Yasushi SAITO

All moving parts of the SE-D-CI series double-shot molding machines, which have been developed based on the SE-D series direct-drive fully electric molding machines, demonstrate high precision in clamping, injection and plasticization. In addition, the rotating mechanism for the reverse platen also achieves extremely high precision, which is the most important factor for performance evaluation of double-shot molding machines, through the development of a new servomotor-based drive as well as a mechanical position-retaining device. The SE-D-CI series has been developed as an excellent molding machine, which is highly useful in the field of high-precision, thin-walled double-shot molding where requirements are diversifying. The series has made a significant contribution to improvement of productivity and quality since it shortens the rotation cycle time of the reverse platen by more than half that of competitors' machines of the same class, has the maximum injection speed of 300 mm/s and drastically shortens the molding cycle.