The invention relates to the technical field of surface defect detection, and provides an injection molding surface defect detection method for an
engineering plastic mold. The method comprises the following steps: transferring an
engineering plastic mold to a defect detection area, and acquiring injection molding surface images of the mold by an
image acquisition device to obtain a plurality of injection molding surface images; a splicing coordinate
system is established, the multiple images are spliced on the splicing coordinate
system, and an injection molding surface stereogram is obtained; constructing a defect
library, and detecting the stereogram based on the defect
library to obtain a defect detection result; mold injection molding constraints are extracted, and when the detection result does not meet the constraints, a maintenance instruction is generated according to the detection result and the injection molding constraints; and based on the maintenance instruction, the mold is transferred to the maintenance area for maintenance. The technical problems that the detection efficiency of the injection molding surface defects of the
engineering plastic mold is low, the accuracy rate is insufficient, and subsequent maintenance is not timely are solved, efficient and accurate detection and automatic maintenance processes of the injection molding surface defects are achieved, and the technical effects of improving the mold quality and the production efficiency are achieved.