PFM Servo Overview

The PFM Servo (Process Flow Mix) is manufactured to enable multiple metering systems to be used from a single material supply.
The metering is carried out by linear actuators operated by a servo motor drive. The use of servo motors enables the systems to hold against pressure making the unit ideal for 2KM’s “Pre-Press” technology which ensures the metering cylinders are loaded with void free materials.
The pre-pressurisation also ensures the materials are at the correct application conditions when the dispense cycle commences.
Typical applications are the precision dispensing of adhesives and the metering of silicones in a multi machine environment.
All systems have point of application control, with cylinder positional feedback giving accurate application information to the data collection systems.

Metering technology Servo driven linear actuator on shot piston metering pumps
Ratio range 10:100 through 100:100 to 100:10
Output (depending on Viscosity) Max shot 120 ml
Viscosity range 250 to 300,000 cps
Maximum operating pressures 250 bar
Mixing options In line high pressure static
Metering control Feedback from linear transducers on servo drive
Control systems Siemens S7-300 PLC
Services Single phase 240 v electric with pneumatic supply for valve operation
Options available 3rd component
Material supply form 20 or 205 litre drums
Auto changeover supply system
Area of application Industry Process
Composites Wind Energy Bonding of root bolts
Bonding Solar Bonding of 1 & 2 K adhesives for solar panel production
Moulding Liquid Silicone Rubber Moulding of medical devices and infant feeding systems
Typical materials processed: