One Assembly Line, Two Problems, Two Solutions

One of the great benefits of technology is the ease with which we can take and share photos or videos.  A domestic engineering firm contacted me earlier this month in search of a suitable cooling method with their application.  They provided excellent details about the application, but there were still a few discrepancies between what was described, and what I thought was being described.

So, I asked for a photo, and thanks to the ubiquity of camera phones, I received the image below.

CAM00272
Soldered connection of harness which needed to be cooled

In this application a soldering process is performed at pin connections of an electrical harness.  The harness is then inserted into a plastic housing, and the heat remaining within the soldered joint was posing problems for the next step in production of an electronic module.  So, the end user, and the engineering firm, ultimately needed a suitable way to remove the heat from the soldering process.

And, in addition to this problem, the soldered assemblies were experiencing defects due to static as they were fed down the conveyor line shown below.

CAM00268
Module exit point onto conveyor
CAM00270
End of the conveyor. When the modules would reach the end of the conveyor, they would be statically charged.

While we knew the heat from the soldering process needed to be removed, we were not 100% certain as to how much cooling (exactly) was needed.  So, we opted to use the model 3930 EXAIR Cooling Kit which includes a medium sized Vortex Tube and all related generators to configure up to 10 different Vortex Tube models.  With this kit we were certain that a suitable cooling capacity could be reached with the minimum amount of compressed air.

To remedy the static problem, an 18” Super Ion Air Knife was installed over the width of the conveyor.  The Super Ion Air Knife was mounted with the exhausting airflow at a low, 30° angle of attack, opposite the direction of module travel.  By blowing ionized air over the full width of the conveyor, the static was removed, thereby removing the process disturbance and solving the static problem.

What started as a simple email compounded into multiple applications with problems that were all solved using EXAIR products.  If you have a similar application, whether for cooling, cleaning, static removal, conveying, or material coating, contact an EXAIR Application Engineer.

Lee Evans
Application Engineer
LeeEvans@EXAIR.com
@EXAIR_LE

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