Vacuum feeding machine for powder materials

The utility model provides a powder material vacuum feeding machine which comprises a feeding shell and a material barrel, the top of the material barrel is fixedly provided with the feeding shell through a supporting frame, the top of the feeding shell is fixedly provided with a communicated upper cavity, the top of the upper cavity is provided with a lifting assembly, and the upper cavity is provided with a lower cavity. The working end of the lifting assembly extends into the feeding shell, the scraping type material guiding assembly is installed at the working end of the lifting assembly in a butt joint mode, and a communicating feeding pipe is installed at the top of one side of the feeding shell in a butt joint mode. The scraping type material guiding assembly comprises an isolation plate, an opening and closing component, a scraping component and a plugging block. The lifting assembly comprises a hanging bracket, a first air cylinder, a connector and a guide rod. According to the material scraping type