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Automated Grease Dispensing for Automotive Switches

A Success Story

2 October 2017

By Julian Greiner

An automotive parts manufacturer needed to reduce over-deposits on its radio and climate control switches. The manufacturer needed a solution that could apply enough grease to dampen the sound of plastic-on-plastic friction, but not too much that it would seep out of the control panel when the temperature inside the car warmed. Nordson EFD’s Liquidyn® P-Jet non-contact fluid dispensing valve and EV Series automated dispensing system were the perfect solution.

Fluid Used

Grease

Application Requirements

  • Precise dots of automotive fluids on hard-to-reach surfaces
  • Reduce noise of plastic-on-plastic friction / lubricate switches
  • Deposits must not contaminate surrounding areas or leach out of control panel

Previous Process

The automotive parts manufacturer used contact dispense valves mounted on several 3-axis benchtop automated dispensing systems to dispense two to three dots per switch on plastic parts housing several switches for audio and climate control adjustment. Dots were placed prior to attaching the switches.

Issues with Previous Process

Deposit volumes were too large. Over-deposits caused a problem for end users. As the interior temperature of their vehicles warmed, the grease became thinner causing it to seep out of the radio and climate control panel. This feedback came back to the manufacturer, who had to find a better solution.

In addition, the contact dispense valves could not accommodate varying part tolerances. This caused major process control issues as the dispensing tips would crash into parts that had a variance in thickness.

Solution


 

Results

Replacing the contact dispense valves with Nordson EFD’s P-Jet non-contact jet valves allowed the manufacturer to apply the exact amount of grease needed for the automotive switch application. The P-Jet valve prevented material from seeping out of the automotive switches.

Choosing a non-contact method of fluid dispensing removed the need for Z-axis movement, allowing the jet valve to accommodate varying part tolerances. It also sped up the dispensing cycle, allowing for higher throughput yields. Nordson EFD’s innovative 3-axis automated dispensing system and P-Jet valve allowed the manufacturer to react very quickly to new and different parts that had to be lubricated.

The P-Jet valve’s low-maintenance design made it easy to setup, operate, and service with minimal training. In addition, the pneumatic jetting technology had a lower cost of ownership than other types of jet valves, providing additional savings to the manufacturer.


Related Applications

  • Door lock switches
  • Window switches
  • Mirror switches
  • Wiper signal switches
  • Turn signal switches
  • Headlamp switches

 

Learn more about Nordson EFD fluid dispensing solutions in our Automotive Application Guide. Watch more dispensing videos in our Automotive Video Playlist.

Do you have a question about Nordson EFD’s automotive assembly equipment? Don’t hesitate to contact us at marketing@nordsonefd.com.

Julian GreinerAbout Julian Greiner

Julian Greiner is the Global Product Line Manager for Jet Valves at Nordson EFD. He manages the non-contact jet valve product line. Julian has more than five years of fluid dispensing expertise. He joined Nordson EFD in 2015.


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