1. Part of the pre-milling cutter is abnormal: If the base surface of the pre-milled plate has raised lines and the glue is not uniform, the defect of the excessive glue line will be formed. The way to check whether the pre-milling tool of the
Auto Edge Banding Machine is standard is to turn off all units and only open the pre-milling tool. After pre-milling with MDF, observe whether the boards surface is flat. If the pre-milled sheet is not flat, the solution is to replace a new pre-milling cutter.
2. The glue roller unit is abnormal: there may be an error in the perpendicularity between the glue roller and the base surface of the plate, and the perpendicularity can be measured with a square ruler. If the error is significant, more than 0.05mm, it is recommended to replace all milling cutters. The temperature of the glue coating pool is as high as 180 °C under the state of industrial heat, and it cannot be touched with bare hands. The easiest way to check is to find a piece of MDF, adjust the amount of glue to the minimum, and see if the glued end face is even. Slight adjustment by adjusting the bolts can ensure that the entire end face can be evenly applied even when the amount of glue applied is the smallest.
3. The pressure roller unit is abnormal: there are residual glue marks on the surface of the pressure roller, and the surface is not flat, which will cause a poor pressing effect. It needs to be cleaned in time, and then check whether the air pressure and the pressure roller are normal. An error in the verticality of the pressure roller will also lead to poor edge sealing. Still, it is necessary to confirm that the base surface of the plate is flat and then adjust the verticality of the pressure roller.