Take a look at the following video submitted by a potential new customer who operates a steel forge. In the video, you will see a trimming operation of a three-pound part that is somewhat intensive in terms of manual manipulation of the work piece.
The customer contacted me because he was looking for a way to speed up the operation to increase productivity. His thought was that if he could eliminate the amount of time the operator spent moving the trimmed part and the scrap out of the die area that he could easily achieve his goal.
After viewing the video submitted by the customer a few times to get a good feel for where things in the process needed to go after the trimming die comes down, I was able to come up with a fairly simple part ejection plan. The plan would consist of (2) model 1112 (3/4 NPT Super Air Nozzles) situated around the die at specific locations. The first one would be placed below the die area where the trimmed part falls after trimming (notice the manual pushing paddle set up on the die in the video). The nozzle would cycle on for a fraction of a second. Just long enough for the part to clear the die and move onto the chip conveyor located in the background.
Immediately after the die comes back up into its top-most resting position, the second air nozzle would be positioned to the left side of the die to blow off the trimmed scrap ring into a waiting scrap bin for re-processing. Both air nozzles would be controlled by solenoid valves which would receive input from the die press to know when to cycle on and off. A localized air storage tank, close to the air nozzles would also help keep the blowing performance at its proper working pressure during each cycle. The air tank would act as a capacitor to dump the energy needed for the split second need for each stamping cycle. The air storage tank keeps the nozzles at pressure and prevents the application from using the existing building pipe network from acting as the reservoir. A much more effective method for intermittent compressed air need as would be the case in this application.
Many people wonder why we would have such large air nozzles in our product line up. Blowing around a 3 pound hunk of metal in a real production environment is one really good reason. It makes for a simple, non-contact blowing operation that is easy to set up and simple to use.