Bridging in vibratory feeding of cans
Bridging in vibratory feeding of cans
(OP)
I am attempting to feed " tuna style " cans from a vibrating stainless tray mounted on a pivot to produce a ramp, onto a conveyor. The tray is a right triangle with a base of 36 inches and a side adjacent of 48 inches. A four inch opening at the top allows the cans to flow out. The cans will flow for a short time and then bridge.So far, no combination of fingers on the sides of the tray will break up the geometry and stop the bridging. Increasing the degree of the ramp only increases the pressure on the bridge. Any help in this matter will be greatly appreciated.
Cheapshot Charles W. Ames, Ames Mechanical Development
Cheapshot Charles W. Ames, Ames Mechanical Development





RE: Bridging in vibratory feeding of cans
Regards
Dave
RE: Bridging in vibratory feeding of cans
This system used to work? or was it conveying different material?
I am wondering whether it is old, and worn out, or, if new, the wrong vibration frequency or amplitude is being used.
Can you supply some of these details?
RE: Bridging in vibratory feeding of cans
Charles W. Ames
RE: Bridging in vibratory feeding of cans
RE: Bridging in vibratory feeding of cans
In addition to the rails (which perhaps your feeder design includes), small, hi-freq, air driven, turbine vibrators can help overcome the starting/jamming friction that the cans experience. These should be mounted on the rails, not on the feeder, and are usually most effective in the 8-10 VKBM speed range.
bk
RE: Bridging in vibratory feeding of cans
Can you give us any fdbk on how you made out??
BK
RE: Bridging in vibratory feeding of cans
We have installed a spring wire finger attached to one of the vibrator mounting screws in the vicinity of the jamming. It appeared to work once in the shop but didn't work when we tried to use it in production. We do not have a ridge at the bottom of the can like you would see on soup or tuna cans. Instead we have a flange of about 1/8" at the top which is rolled over during the cover sealing operation. This is not helping us either. Our problem continues.
Cheapshot
RE: Bridging in vibratory feeding of cans
BK