Hi Guys,
We are using two types of support Jigs for our PCB boards, during the paste printing, chip shooter, and IC mounting.
The two types of support Jigs are : 1) "self-fabricated" aluminium support Blocks 2) "off shelf purchased" support Pins
The function of either Block/Pin, is to provide bottom support for the PCB, as it is being paste printed or chip/IC mounted.
the support Pins are off shelf purchases and come with lever activated magnetized ability to "lock" the Support Pins in the designated locations on the machine tables.
For mass production Lot runs, we use dedicated support Blocks for each model type. the support Blocks are "lock" into allocated locations on the machine tables, using double side tapes. the problem is that this requires longer setup times (human trial and error placement) that also leaves tape residue after Block removal (for model conversions). We are thinking of getting magnetized support blocks, similar to lever activation liken to the support Pins concept. The support Block is standardized into (150mm x 140mm x 70mm) working dimensions.
Anyone have working knowledge whether this magnetized support Block is feasible, based on working dimensions? any concerns of magnetized affecting the machine tables, and generating electro-magnetic fields over 24hr/7days of use? (meantime we are waiting for machine maker opinion).
I dunno...seems like this simple question of getting magnetized support Blocks is a hot topic of debate...appreciate any external(like SMTnet) sources of practical opinions regarding this topic.
thanks in advance to anyone who can share their valuble experience and "laws of physics" knowledge, with us all.
Cheers!
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