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Features

NameDetail
Safety Features

Front door with safety switches

Typical dispensed products

Oil, grease, glue, silicon, paint, flux, medical products, and many other chemicals. (Filled products included)

Heating capacity

up to 80 °C

Description

VA10002

High Precision Dispensing System with Reliable and Constant Mix Ratio for Highest Process Safety

The DOS P metering head is a volumetric piston dispensing system for one or two component materials, based on a standard design. Each metering head is then customized to meet the required process specifications in terms of mix ratio, dispensing quantity and number of nozzles. The mix ratio is mecanically established through the diamaters of the resin and hardener cylinders and guaranteed by the simultaneous movement of the metering pistons, while the constant and repeatable dispensing quantity is defined by the stroke of the pistons, which are moved by means of a stepper motor. Working with the fixed volumes of the metering cylinders for resin and hardener in the metering head and separating this defined volumes from the feeding systems by closing the inlet valves makes sure that the dispensing result is completely indipendent from feeding pressures, material viscosities and temperature.

The material components are always kept separated inside the metering head, until they meet in the disposable static mixing tube, where they are thoroughly blended.

The metering pistons are touching the dispensing material only on one side, pushing it ahead and cleaning the cylinder walls during each stroke. A protective liquid on the back side of the pistons helps to clean and remove agressive and abrasive parts from the seals and the cylinder walls and helps to efficiently minimize wear and tear, thus drastically reducing maintenance costs. Additionally, the protective liquid seals the dispensing material from contact with atmosphere and moisture.

 

Equipment features:

  • Stepper motor driven
  • Pneumatic inlet and outlet valves with diaphragm
  • Magnetic sensors for piston rod monitoring
  • Sight glasses for protective liquid inspection (quality and level)
  • Mixing nozzle / dispensing needle adapter

Optional:

  • Servo motor driven with closed loop encoder
  • Tungsten inlet and outlet valve inserts for abrasive materials
  • Inlet valve monitoring
  • Single nozzle control
  • Heater for metering head
  • Heater for mixing nozzle / needle

Variants:

  • DOS P016 - 1C or 2C
  • DOS P050 - 1C or 2C
  • DOS P100 - 1C or 2C
  • DOS P300 - 1C or 2C
  • DOS Px Vacuum - Multifold
  • DOS PA Alternating - continuous dispensing
  • DOS P016 - TCA - Optimised for highly filled Dispensing Materials