Linear Motors and PLC's

[netblindpaul]

Sounds like you need a flying shear control.

 

[Knobhead]

The only flying shears I know of would cut every thing up.
I’m thinking of the ones used in steel works :56:

 

[gerard]

Hi,<br>Sorry for the delayed response. The pizza dough balls are dropped onto a loader plate. The loader plate consists of 4 'doors' that open when the time is right and they drop the dough balls onto a teflon belt. This belt then indexes forward, moving the dough balls under a hydraulic press. The hydraulic press consists of a large teflon covered platten that presses down on the dough balls, making pizza bases out of them. The hydraulic press than rises and the teflon belt indexes on again and moves the pressed pizzas on and the process continues on like that. The pressed pizza bases are not perfectly round at this stage because they are free pressed. I want to cut them at this stage using some process and remove the excess waste and re-use the waste. Not sure how to do this tho? Are you any clearer?

 

[gerard]

Hi,

What's a flying shear control - Do you have any pictures?

 

[gerard]

Hi,<br><br>What's a flying shear control - Do you have any pictures?

 

[gerard]

Hi,

Thanks for your reply and sorry for my delayed response. I understand your method. Is it possible to get a picture of some sort?

 

[netblindpaul]

A flying shear is a 2 axis Cartesian system which is linked to conveyor speed, it is used in the food, beverage, paper, wood & steel industries for cross cutting when conveyor following.

 

[gerard]

I will investigate this further. Thanks for that.

 

[netblindpaul]

I can arrange a solution for you if you wish!

 

[gerard]

I do wish. But I was just having a look at the flying wheel method and I'm not sure if it will work. The products are not in a continuous sheet and there would be timing issues I believe.

 

[sbrown2]

Can ask how many times does this fault occur, lets say per 1000 bases?

 

[sbrown2]

I worked for N.........n Foods manufacturing pizzas? I'm scratching my head trying to remember this process. I can understand your theory. Was the process designed for the larger bases? If so depending on the failure rate I would want to assess is the product varying in some way so that it is rejoining during the process or is it not being cut correctly? Is this a maintenance led containment you are putting in place or has the maintenance department raised a CAPEX for the euipment you are aquiring? And from your initial posts can you confirm are you replacing the current process or adding a countermeasure if the current process doesn't work correctly?
I assume you have contacted the machine manufacturer but if you still require the modification it sounds like a good idea. Depending what resources you have a dedicated card for your encoder can be acquired but if you are short on funds you can always wire encoders to your inputs if you have spare. What keyence system are you using. I've currenly use the, now aging, CV75 1P which is mainly used for colour recognition but in your environment could pick up the edge of the dough ball. I think you have had sufficient information relating to cutting of the dough balls.
Anyway good luck and my conclusion follows silva fox, find the source of the problem.

 

[netblindpaul]

gerard,
With the correct equipment a flying shear would solve your faults.
However, I have to agree with the others, you really need to address the root cause!

 

[silva.foxx]

So you have a circular plattern that presses down on the dough balls... what about a skirt around the plattern, tapered out and sprung... the plattern then presses down the dough and the skirt prevents excessive spread.

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[gerard]

Can ask how many times does this fault occur, lets say per 1000 bases?

It happens enough to require a person to monitor the products and separate them manually. We want to automate the process.