The LE40V pick & place PCB holders consist of 2 adjustable brackets that are meant to hold the PCB tightly on 2 sides (let’s call them TOP and BOTTOM) while the machine pounds the panel with parts. Typically you’d set the TOP side bracket to a fixed position that is perpendicular to the machine rails and only adjust the BOTTOM bracket depending on the PCB panel size, and hope you won’t snap your freshly solder pasted panel in half when you tighten it in. Also worth noting that by default there is empty space (ie. nothing) below the PCB for support. After only a few uses it becomes obvious this is a terrible design and unscrewing/tightening hex nuts every time a new size panel goes in the machine gets old super fast. And yes – I snapped V-scored PCB panels to pieces on more than a few occasions thanks to this amazingly clever mechanism.
After some time I added a rigid metal sheet base to actually properly support panels in the machine and that allowed using magnets to hold the panels instead. Worked pretty well for a few years but rare earth magnets are not very easy to handle. Finally I thought maybe I can really fix this with a new magnetic bracket and shoot a video of making it happen. The result is below. I am quite thrilled with these holders that can secure the panels quickly and are a snap to adjust without overlapping much PCB area. Here’s a video showing how these work and how I modeled the parts:
You can find the models on Thingiverse or download a Zipped archive below.
