Why Robotic Fixed Displacement Dispensing Systems Can’t Guarantee Consistent Bead Profiles

    Posted by Mike Bonner

    Nov 20, 2019 1:05:00 PM

    In our last segment, Fixed Displacement Dispensing Doesn’t Guarantee Fixed Results, we examined how viscosity variation impacts your robotic fixed displacement dispensing system and the many defects that can still exist, even in the most highly advanced of these systems.  In this installment, we look more closely at the phenomenon of bead profile, it’s importance to the quality of your end product, and why simply controlling path, dispense rate, and total volume does not guarantee that your process will produce consistently high-quality parts.

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    Topics: Manufacturing, Fluid dispensing systems, Temperature control, Point of Application, Can / Container, automotive, temperature control systems

    Fixed Displacement Dispensing Doesn’t Guarantee Fixed Results

    Posted by Mike Bonner

    Nov 13, 2019 9:39:00 AM

    It has become commonplace to employ fixed displacement systems when dispensing mid-to-high-viscosity fluids like sealers and adhesives.  It makes sense.  Proper performance in these applications hinges on making sure that the right amount of sealer or adhesive is dispensed in the right place on every part.  When coupled with a robot to assure that path, speed, distance and angle to part are consistent and repeatable, it is easy to believe that the dispense job will be perfect every time.

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    Topics: Manufacturing, Point of Application, fluid process control, automotive, temperature control systems, automotive finishing

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