Tip: Bowl Tooling Fundamentals Part II: Spill-Offs
Vibratory Feeder Spill-Off Tooling
The Spill-Off Technique is used to narrow the parts in the bowl to the narrowest width of one part that is capable of being fed up a vibratory bowl's track. For longer parts, it can be used to dump radius to radius parts when end to end feeding is desired.
This spill-off is part of a v-track. The technique here allows the user to add steel plates as the part size increases. This particular bowl, a multi-purpose tooled CB372 (Universally Tooled Vibratory Bowl works extremely well with headed parts such as screws and nails.
Adjustable Vibratory Bowl Tooling
This spill-off was designed to accomodate parts of different sizes. A section of track is removed from the bowl and an adjustable slide plate is inserted. This particular example features replaceable steel plates in places that wear. This will eliminate the need to remove the bowl from production to repair it. With these replaceable plates, all that is required is to temporarily stop the bowl, remove the worn plates and insert the new ones.
Design Tips:
- Typically, the width of the track at the spill-off is a little more than one-half the diameter of a headed part.
- For other parts, the width is determined by testing which track width supports a desirable part but allows undesirable parts to fall off.
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