Composite board edge sealing device with size convenient to adjust

The utility model discloses a composite board edge sealing device with the size convenient to adjust. The plate comprises a plate body, the plate body is placed on the conveying frame. A connecting base is further mounted on one side of the conveying frame; an adhesive tape storage device is rotationally mounted on the connecting base through a rotating shaft; rollers are movably mounted on the connecting base; one end of each roller is tightly close to the side end surface of the plate body; a compaction rolling shaft is further arranged on the connecting base; the adhesive tape storage device is in transmission connection with the rolling wheel and the compaction rolling shaft through an adhesive tape wound on the adhesive tape storage device; the automatic edge banding machine is compact in structure, convenient to use, capable of achieving on-line automatic edge banding, capable of saving labor and improving efficiency, better in edge banding effect, good in economic benefit and social benefit and suitabl