Card crushing mechanism of high-confidentiality card crushing machine

The utility model discloses a card crushing mechanism of a high-confidentiality card crushing machine, which comprises a support frame and a crushing roller arranged on the inner side of the support frame and used for crushing and matching confidentiality cards, a hobbing mechanism used for pre-crushing the confidentiality cards is arranged at an inlet at the front end of the crushing roller, and a buffer box used for preventing the crushed cards from splashing is arranged at the lower part of the support frame. The front-end inlet of each crushing roller is provided with a rolling cutting mechanism used for pre-crushing a confidential card, the pre-pressing roller body is used for shearing and marking the confidential card through the rolling blades on the pre-pressing roller body, the pre-pressing roller body is provided with a plurality of crushing rollers, the two crushing rollers matched with each other comprise a supporting shaft supported on the supporting frame, and the supporting shaft is provided wi