How to adjust the glue amount on a fully automatic edge banding machine?

How to adjust the glue amount on a fully automatic edge banding machine?

The performance of hot melt adhesive for edge banding is affected by temperature, so temperature is a crucial factor to consider during the edge banding process. The temperature of the hot melt adhesive, the substrate, the edge banding material, and the ambient temperature (the workshop where the fully automatic edge banding machine is located) are all important parameters. On semi-automatic edge banding machines, since the adhesive is applied to the substrate, a substrate that is too cold will cause the hot melt adhesive to cure prematurely. This results in the adhesive adhering to the substrate but not to the edge banding material. The substrate temperature should be maintained above 20°C. The ambient temperature of the fully automatic edge banding machine affects the curing speed of the adhesive. Factories often experience edge banding problems in cold seasons because the hot melt adhesive cures faster at low temperatures, shortening the bonding time. If the feeding speed of the fully automatic edge banding machine cannot be changed (in most cases), preheating the board and edge banding material is necessary to ensure edge banding quality.

Automatic Edge Banding Machine Glue Adjustment Method:

1. The glue level in the glue pot must be maintained 1cm below the rim, but not below the two reinforcing ribs.

2. The amount of glue applied should be adjusted according to the size, width, and thickness of the workpiece using the adjustment handle.

3. The movement of the glue pot can be adjusted using the adjusting screw at the back of the pot. First, loosen the locking nut, then use a flat screwdriver to rotate the adjusting screw clockwise to move the glue pot backward, and vice versa. After adjustment, tighten the locking nut.

4. The elasticity of the glue pot can be adjusted via the nut on the locking spring at the back of the glue pot. Turning clockwise increases the elasticity, and counterclockwise decreases it.

5. If the glue pot is too far forward, the workpiece may collide with it, damaging both the workpiece and the equipment; there may be no glue at the front or poor adhesion. If the glue pot is too far back, the entire workpiece may have insufficient glue, or even no glue at all, resulting in poor adhesion and rework. Excessive elasticity can cause poor adhesion at the front while the rear is normal, or a beveled front edge on the workpiece. Sometimes, honeycomb-like defects may appear on the sealed workpiece.

6. Insufficient elasticity can result in too little glue, or even no glue at all, on the workpiece. The glue return hole should be kept clear; otherwise, the bottom of the workpiece will become very dirty, affecting quality. Glue will also adhere to the conveyor belt and limit switches, causing malfunctions and damaging the workpiece and equipment.

7. A dirty exterior of the glue pot will affect the appearance. If the upper part of the glue pot is too dirty, and grime forms due to prolonged high temperatures, the pot may not return properly during sealing, affecting the sealing quality.