Injection Mold 100% Visual Inspection - Short Shots and Debris not being found

Bev D

Heretical Statistician
Staff member
Super Moderator
#21
If mistake proofing is really not cost effective and you've asked your operators for ideas then the real answer lies in CONTRACT REVIEW. Don't accept contracts that you can't profitably meet. Negotiate the acceptable ppm levels; too often Customers blindly apply very tight defect levels even tho the severity of the defect is minimal...

But you asked this same question in a different thread - there were some ideas on mistake proofing given in that thread. Are they also not possible in your situtaion?
 
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DominicE

#22
This is easier to fix then depending upon contract review to reject new work or a person to follow procedure. Most system either conveyour or sorter that run with the injection molding machine can be set up to automatically reject X amount of shots upon startup. We had all of our conveyours and sorters and robotics set up to reject the first 5 shots automatically. This may sound like a lot of pieces but after 5 shots the machine should not flash or short if the process is correct. Build that type of error proof into the system and now you are no longer dependent upon a person to remember to toss out the first shot. The price for 5 shots is way less then the price of sorting or vision inspection.
 

k3nny

Periodic Visitor
#23
Depending on your application, I looked at a simple, cost effective conveyor mounted technology (vision system) that was not bad. It was effective for high contrast items and ran less than $10k.

I am not associated with these guys, and my application wouldn't work with their technology but if you have a high contrast item , keyence has a few items that could solve your issue.

Otherwise, the conveyor option is simple and effective.
 
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