The injection molding welding method involves a precise fit between the end of the toothed rod and the PVDF side plate mounting hole, with a negative tolerance to ensure that the flower basket will not accumulate liquid at the welding point during velvet production. It is assembled and formed using a hydraulic cylinder press, and the toothed rod end is designed with anti rotation function. This installation method matches the structural design and accuracy to prevent the flower basket from twisting and deforming. After assembly, it is placed in a customized injection molding machine, and the green part of the injection molding snap ring can effectively prevent the flower basket from falling off from the toothed rod. This structure has no assembly gaps, avoiding water accumulation at the welding points, improving the strength of the flower basket, and ensuring dimensional consistency, with high precision matching automation equipment. Each welded flower basket must pass through the flower basket inspection fixture to ensure the quality of the shipment. Only after the inspection is completed can it proceed with the subsequent process.