We do not want to re-invent the wheel. There are some excellent companies out there that are specialized in assembling machines.
One of the most recognized companies for needle assembling is Kahle Engineering in New Jersey. Kahle is specialized in high speed syringe assembling machines. (http://www.kahleautomation.com/)
Please contact Kahle for this type of machines. (You may mention that we recommended you.)
For any custom designed assembling machines, contact us. We have innovative ideas and like challenges.
Our latest design is a high speed needle assembling machine for tattoo needles. Call us for details.