How to control dispense volume of non-Newtonian fluid – Rheology Study Included

Dispensing System:

  • Supply pump supply grease from pail pump to Mastic Pressure Regulator
  • Air Operated Mastic Regulator (diaphragm type) is set to ~400 Psi(fluid)
  • On/off Pneumatic Dispense valve at the end of a robot that makes a 5.2cm Diameter circle
  • Valve has interchangeable Needles currently using (1.6mm ID Needle)

Problem:

  • Need to dispense 1.11-1.63cc of Molykote G-N metal assembly paste
  • Cycle time <1s

The pail of paste includes mineral oil for delivery through the hose. The pail is mixed before it is used in the equipment.

Currently using a syringe to measure volume

I would like to know is there any way to get the volume within tolerance without investing in a metered dispense system.

How to control dispense volume of non-Newtonian fluid – Rheology Study Included

Rheology Study Description

Rheology Results

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