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moulder chip recirculation1/17
I am posting this here to inquire as to if any other experienced moulder technicians can confirm what I believe to be the cause of an issue I am having. I set up and operate a Kentwood M609s. I like the machine. I like the work we do. Having two top spindles is a vast improvement to the single top spindle on our previous machine.
Are you referring to what we call 'chipbeat' - where chips ride around the head and get pressed between the wood and the knives, leaving a slight imprint?
It is a difficult culprit to track down. Basically it is dust collection, but we found humidity, feed speeds, heartwood vs sapwood, and even MC of the lumber, as well as species all made a difference. We tried adding supplemental air to increase and/or change air currents. We killed a chicken in the light of a full moon. That does not mean we solved the problem every time. It is a tough one. No solution here, my friend.
I haven set up/run a moulder in a number of years, however I have been a setup guy/ opperator in the past. We had the same problem on some of our profiles as well. Our tech told us we needed to increase the terbulance inside the collection hood. Depending on the amount of, what he called, "cat claw" we did one of two things. If there was a small amount we removed the door on the hood to allow more air to flow around the cutting head. If there was a larger amount the first strategy didnt solve we made a jig to hold an air tip to blow directly at the cutting line to blow the chips off the tip of the knife. If you do remove the door on the hood make sure there is a secondary saftey of some sort, we ran a weinig that had a large front door that had to be closed to opperate.