Pressure plate structure

The utility model relates to the technical field of pressure plate pumps, in particular to a pressure plate structure which comprises a pressure plate part, an extraction hole is formed in the center of the pressure plate part, a gathering groove communicated with the extraction hole is formed in the bottom of the pressure plate part, and the gathering groove is a concave part formed by inwards sinking the pressure plate part. And an included angle a between the side wall of the converging groove and the bottom surface of the pressure plate piece is 3-30 degrees. According to the pressure plate structure, when the pressure plate piece moves to the bottom of the material barrel, the converging groove enables glue at the bottom of the material barrel to converge towards the center of the material barrel, so that the glue can be conveniently extracted by the extraction hole formed in the center of the pressure plate piece, the glue around the bottom of the material barrel can be completely extracted as much as p