vibratory power supply

[roby88]

Hello everyone I am a young mechanical maintainer and I would need advice.
I have to feed a cup vibrator with a hopper that is equipped with a vibrator to facilitate the release of the pieces contained in it.
I wanted to mount a level-to-tasting sensor that either activates the hopper vibrator so as to keep the level of the pieces constant in the cup vibrator, avoiding in this way that the machine operator loses time in loading the vibrator.
Could you advise me what kind of sensor to use and how to connect it to the hopper vibrator?
I do not have free channels on the plc and install a plc only to control the hopper would not seem the case.

Thank you very much.

 

[meccanicamg]

two types are normally used:

1) Laser level tastor (tipo balluff bos 26k pa 1ie s4 c) or similar, however, you have to put it in the vibrator's adjustment box if provided with a special input (if you use the brovind cassettes have the special channel for the level meter)

2) Mechanical lever tastat with on/off switch control directly (I have no available images but I tell you that you have to make a brace on which to mount a sheet with a small hinge that rises and lowers by crushing a micro switch that sends direct signal to the bristle of the vibrating hopper)

 

[Fulvio Romano]

I would say that a plc dedicated to a sensor is overwhelmed.
there are various types of tastators. I would avoid the mechanical direct taste, so the following types remain:
- laser tastatore
- Ultrasonic Tastator
- rotating blade switch (see example).

I would avoid it, but it is still an existing system. There is a scooter that rotates the palettes. when these are immersed in powders or small components, they are blocked and the sensor knows that the level exceeds that of the palette.

I could recommend you hundreds of brands and models, but it depends on what you need. you can see sick, wenglor, baumer, etc. etc.

as an electrical schematic, the sensor has a pnp or npn output. food, it feeds a relay (electromechanic, do not look for strange stuff that in this case does not serve) through which feeds the vibrator.

otherwise there is another technique, but you have to see the encumbrance. if you place the exit of the hopper at the desired level in the cup, and then leave the vibrator of the hopper always active, the level in the cup will always remain constant mechanically, without need of sensors.

 

[Fulvio Romano]

Maybe so I'm a little clearer. . .

 

[roby88]

thank you very much for the advice..
I made the connection today and everything works to wonder. .
Thank you very much

 

[Fulvio Romano]

thank you very much for the advice..
I made the connection today and everything works to wonder. .
Thank you very much

I'm glad.
But you followed my pattern? I would have expected at least one question about why that diode...

 

[roby88]

I honestly didn't put the diode, but I wanted to put a condenser on the contact of the relay to avoid glittering but my superior told me that it would be "useless". . .

does the diode not only serve to stabilize the current on the relay coil?