Sumitomo Plastics Machinery all electric plastic injection molding machines manufacturer

For clamping, the SES provides the high-performance combination of Sumitomo's all-electric technology with the company's field-proven, double-toggle clamp design for mold open/close operation that's remarkably fast, smooth, precise and energy efficient. The clamp unit's rigidity and durability, verified using finite element analysis methods, are your assurance of years of round-the-clock, trouble-free, high-speed molding.

The clamp unit features two, digitally controlled AC servo motors for clamp and ejection operation. Precision clamping is assured by full, closed-loop control of mold open/close velocity and position. As with the injection unit, belted motors with highly efficient power transmission and exceptionally durable belts are used.

To help molders tailor machine operation to specific mold requirements, the SES provides three-stage mold open/close speed control. Additionally, selectable ramping modes (soft, standard or sharp) can be used to optimize clamp open and close profiles for fast cycles with shock-free movement.

Clamp and ejector operation are monitored by precise optical encoders for maximum mold protection and consistent molding cycles. With low pressure mold protection settable to 0.01 in, and digital setting of mold open/close positions to 0.01 in, you're assured of precision mold protection and no banging-even at high speeds. Other standard features include a mold open stop position accuracy of less than 20 microns, an important factor for take-out robots and 3-plate molds. And standard roller-type moving platen supports provide high load bearing capability.

Excellent clamp force linearity, from low to high tonnage, enables optimum setting of clamp force to suit parts with different projected areas.

Optional multi-toggle clamp force control offers two modes: a high-cycle mode in which filling can begin during clamping; and a gas-release mode in which filling can begin during low-pressure clamping. This unique feature offers the benefits of a shorter cycle time and improved part quality.

For optimum life of the ball screw, toggle pins, and tie bar bushings, the SES is equipped with a highly reliable, automatic grease supply through a valve-type progressive distribution system. This system uses an externally mounted pump unit with easy-to-load grease cartridges that can be changed without interrupting machine operation.

Please use the Info buttons above at right to read more about SES Series mid-sized all-electric injection molding machines.