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Measuring height of the nozzle of the dispenser at a low cost

Measuring height of the nozzle of the dispenser at a low cost
  • Cost reduction
  • Position Switches MT
  • Robot

  • A device manufacturer that produces adhesive dispensers.

    A representative of the development of dispenser for smartphones inquired us about "height measurement" of the nozzle in applying adhesive.


Client's Issues

Measuring height of the nozzle of the dispenser at a low cost

The "contact-type displacement sensor" has been used for measuring the height of the nozzle of dispenser with adhesive, however, the device was expensive and this was a financial burden.

The nozzle height measured before applying adhesive is provided for the feedback on the values to the machine, however, the 1 μm or better high accuracy is required also for controlling the amount of application precisely.

With the adhesion application of tempered glass for smartphones expanding, the client's company found a sensor that can measure the nozzle height at low cost and contacted us.

  • Contact displacement sensor is expensive.
  • Repeatability of 1μm or more is needed.


Metrol's suggestions

Measuring height of the nozzle of the dispenser at a low cost

For a measurement in automated lines for detecting constant positions, the number display (displacement measurement) is often unnecessary, and "Contact-type displacement sensor" gives the dispenser overperformances for such application in many cases.
Metrol's "precision positioning switch" can detect the nozzle height with high accuracy ON/OFF signals.

While the accuracy of the switch is the same as that of contact-type displacement sensor, the switch can reduce the cost to about 1/10.

Furthermore, the contact tip material can be customized to resin so as to reduce the contact force, so there is no risk of scratching the tempered glass for smartphones.

  • Reduced the cost to 1/10 by eliminating the number display.
  • Realization of repeatability of 1μm.

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