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News

Moog

Moog Controls : 09 August, 2006  (New Product)
Moog has introduced the new Moog PowerShot Injection System that combines the best of electric and hydraulic technologies in a compact unit that can be installed easily, and adapted to a wide variety of force, speed, and torque requirements. This unique system is designed for injection molding machines operating at high speeds and forces, which require precise control.
Moog has introduced the new Moog PowerShot Injection System that combines the best of electric and hydraulic technologies in a compact unit that can be installed easily, and adapted to a wide variety of force, speed, and torque requirements. This unique system is designed for injection molding machines operating at high speeds and forces, which require precise control.

In recent years, there has been a strong trend in the plastics industry to move from hydraulic to electric machines. The PowerShot Injection System was developed in response to a need to provide machine builders with the benefits of high power, high speed, and accuracy, commonly found with hydraulic technology, as well as the low energy consumption, clean environment, low maintenance costs, and modular flexibility of electric technology. The Powershotä design effectively integrates Moog designed and built electric and hydraulic products into a compact package that provides the best of both worlds.

The PowerShot Injection System is a sealed, closed-loop actuator that combines electric and hydraulic technology in an energy efficient assembly that requires no external power unit. It uses a single servomotor to control the entire system, including the screw rotation of the plasticizing screw. Injection and decompression (suckback) control is accumulator driven, and controlled by a Moog servocartridge, which allows closed-loop control of velocity, pressure, and position. The RKP Pump is used for closed-loop control of backpressure during recovery, while recharging the accumulator for the next cycle. The PowerShotTM System uses the new Moog Servo Controller System, which interfaces with the customer’s controller through a fieldbus. This compact package is installed with just a few connections to the customer’s machine, offering “plug and play” convenience.

The PowerShot Injection System is an important new solution for the plastics industry, as it offers energy efficiency, and the power needed for optimum operation of high performance machines. The energy efficiency of the PowerShot is superior to other high force, high speed systems, because the main servomotor and RKP pump are turned on only as needed during the recovery (plasticizing) portion of the cycle. Typically on hydraulic systems, the pump would be turning constantly, even when no oil is required by the system, which reduces overall energy efficiency. All-electric systems do not have this drawback; however, they typically require one motor to control the screw rotation and an additional two or three motors for injection control. In addition these motors are turned on during the injection and injection hold portion of the cycle. By contrast, the servomotors in Moog PowerShotTM Injection system work only when needed in order to provide maximum energy efficiency.

'The PowerShot Injection System has received a lot of attention from machine builders as it is a new solution for a problem they face. This is an ideal way to get the power for high force injection machines that all-electric solutions can't deliver,' said David Geiger, Manager, Systems at Moog ICD and inventor of PowerShot Injection System. 'As a bonus it saves costs due to minimal oil usage, reduced energy consumption and easy, ‘plug and play’ installation.'

Features of the Moog PowerShot Injection System include:

Precise control for high power, high speed injection applications
Effectively combines Moog’s high performance products in a unique system that provides the best of Hydraulic and Electric technology
Superior injection control for improved accuracy
Customizable and scalable solution for a variety of customer-specific applications
Sealed unit with only a few connections to the machine for easy installation
Low energy consumption and clean environment
No hydraulic power unit is required, which reduces costs
Minimal oil usage
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