SUMITOMO HEAVY INDUSTRIES TECHNICAL REVIEW
Development of Compact Injection Molding Machine
Nobuhiko TOKUSHIGE
Development of Compact Injection Molding Machine
There is a move to resume domestic manufacturing among major Japanese companies of electric appliances and automotive parts/components through promoting technological innovation and a self-developed factory automation system. The plastic molding industry, under pressure to curtail its capital investment, is requesting a reduction in the costs of injection molding machines, to minimize the installation space required for the machines, and the provision of in-line injection molding machines. Responding to these customer requirements, we have developed the compact injection molding machine SVC50, with a machine size of 2000 mm (L) x 1000 mm (W) x 2000 mm (H) by employing a vertical mold clamping unit with a force of 490 kN (50 tf) for horizontal injection. The compact machine features hydrostatic power transmission (HST) for the injection mechanism and the arrangement of units as well as the vertical clamping unit. The units have been arranged to provide sufficient space to install a takeout robot and a conveyor under a plasticizing unit within the frame of the injection molding machine, which would otherwise need to be separately installed from the machine body.