Abstract: The epoxy resin infusion used in the production of wind turbine blades is a two-component glue. After the infusion operation, a certain amount of two-component glue will remain in the mixing block and static mixing tube of the resin pouring machine. The remaining two-component glue, after a certain period of time, will solidify and block the mixing block and static mixing tube. In order to avoid clogging of the mixing block and the static mixing tube, a flushing and flushing of the gun is required before and after each use of the equipment. The amount of resin for each blade flushing gun is about 15 kg, which causes a lot of waste. This article introduces the application of epoxy resin mixing equipment no-clean gun technology in the molding process of large wind turbine blades, and compares its advantages with the conventional infusion resin mixing machine gun cleaning technology, which proves the higher application value of this technology. Practice has shown that compared with conventional technology, this technology can achieve the correct and uniform mixing ratio of the resin mixer. The mixing block is free of maintenance for 2 months, and a single blade reduces 15 kg of resin waste, which has high engineering application value.

Key words: wind turbine blades, epoxy resin mixer, no-clean gun technology, composites