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Edgebander Glue Roller Problem

3/30/23       
Smallshopguy Member

I have an edgebander with a glue roller. The problem is that glue builds up at the roller where it meets the glue gate. So if I don't run boards continuously, and wait a minute or two before the next board, it gets a blob of glue on the front.

When I open the gate more, it doesn't happen, but then I have too much glue on the board! When I close the gate all the way it doesn't happen. Its only when the gate is open just enough to have the correct amount of glue on the roller that it happens.

I cleaned out the gate completely by taking it apart and soaking it in lacquer thinner overnight. It came out perfectly clean. Then reinstalled it. But that didn't help.

I'm running Jowat 280.30 unfilled glue at 180c.

Any ideas?

Attached is a picture showing where it happens (with the green arrow showing the worst spot and what ends up going onto the leading edge of the board as a big blob.

This is a video of it happening
https://www.dropbox.com/s/865prlm258z7br9/PXL_20230328_211538210.TS.mp4?dl=0

View Video


View higher quality, full size image (1272 X 745)

3/30/23       #2: Edgebander Glue Roller Problem ...
Dave Edgerton  Member

Did this happen recently, or was is progressivley worse? How may meters on that roller and gate? Change in glue type?

3/31/23       #3: Edgebander Glue Roller Problem ...
Smallshopguy Member

Been happening since I can remember. We bought the machine new from China about a year ago and have used it very sporadically as we are not at full production quite yet (finding good people to work the shop has proven to be incredibly difficult). It's my first bander so I learned on this machine.

We probably have run 1000-2000 meters total on the machine.

We started with Jowat 280.30, Switched to 280.90 then just switched back to 280.30 hoping it would solve the problem. It did not.

3/31/23       #4: Edgebander Glue Roller Problem ...
Bruce H

I have a glue gate on my bander, the adjustment is real touchy between not enough glue and too much. I tried Jowat glue and didn't like it. Went back to Doris KS-205. which I run at 205C. At what temperature did Jowat say to run the glue you are using? You might get a thermometer and check that your machine is running the proper temperature, calibration may be off. The glue I am using would not run at your 180C, too cold.

4/1/23       #5: Edgebander Glue Roller Problem ...
Dave Edgerton  Member

I agree 180 is too cold. We used unfilled for a while and went back to filled. Im not sure why you would get that buildup there as the glue application rod should be turning ccw if your feed chain is moving to the left as in the video. Is that correct?

4/1/23       #6: Edgebander Glue Roller Problem ...
Dave Edgerton  Member

Another thought is there a gap in the gate? Is it one continuous edge that restricts the glue? Maybe a small worn spot or another thought the gate is not parallel to the roller?

6/8/23       #7: Edgebander Glue Roller Problem ...
Bob Lewis Member

We had sort of the same problem but our machine is much older. We found the top bushing on the glue roller and shaft were worn causing the shaft to wobble. It was impossible to get the glue adjusted properly. When we adjusted the gate for the glue it would work great until we stopped for a minute then the glue would build up.

6/8/23       #8: Edgebander Glue Roller Problem ...
Smallshopguy Member

We figured it out. We adjusted the shoe further out so its more distant from the roller. That allowed us to open the gate up more, which alleviated the glue buildup issue where it was getting trapped between the gate and the roller.

6/8/23       #9: Edgebander Glue Roller Problem ...
Bob Lewis Member

Keep in mind the cabinet part should not touch the glue roller, only the glue.


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