What is a servo injection molding machine?

A servo injection molding machine is a high-performance injection molding machine that utilizes a servo motor drive system. Its servo control system precisely regulates motor speed, torque, and position, achieving precise power output at every stage of the injection molding process. Compared to traditional hydraulic injection molding machines, it offers significant energy savings and high precision.

The core of this equipment lies in its servo drive system, consisting of a servo motor, a high-precision encoder, and a control system. This system adjusts power output in real time based on actual production needs, eliminating the energy waste associated with the continuous operation of traditional equipment. In actual operation, servo injection molding machines demonstrate excellent energy savings, typically saving 40%-70% in energy compared to conventional hydraulic presses. They also consume virtually no electricity during standby mode. Servo injection molding machines utilize high-precision, high-sensitivity pressure sensors and rotary encoders for closed-loop control of pressure and flow, achieving repeatability errors of less than 1%. The servo motor reaches maximum output power in just 0.05 seconds. The "unfixed pump + constant-speed motor system" with overflow heating keeps the hydraulic oil temperature low, significantly reducing cooling water usage.

Servo injection molding machines are primarily categorized into three types: all-electric, hybrid, and servo-hydraulic. All-electric machines utilize servo motors to drive all movements, offering the highest precision but also higher costs. Hybrid machines utilize servo drives for key movements while retaining some hydraulic systems, balancing performance and cost. Servo-hydraulic machines utilize servo motors to drive variable displacement pumps for energy-saving improvements. These machines are widely used in precision electronic components, medical devices, optical products, automotive precision parts, and thin-walled packaging.

To maintain optimal performance of servo injection molding machines, it's important to regularly inspect the servo motor cooling system, keep the encoder clean, monitor the driver's operating status, and, for hybrid machines, regularly replace the hydraulic oil. With increasing demand for energy conservation, environmental protection, and precision manufacturing in the manufacturing industry, servo injection molding machines are gradually replacing traditional hydraulic machines and becoming the mainstream choice for modern injection molding.