Preparation device and method for recycled carbon fiber thermoplastic short cut

The invention discloses a device and a method for recycling thermoplastic chopped carbon fibers. The device comprises a sizing mechanism, a bundling mechanism, a homogenizing mechanism and a drying mechanism which are sequentially arranged, the sizing mechanism is used for sizing the surfaces of the chopped carbon fibers; the bundling mechanism is used for bundling the sized chopped carbon fibers into large particles; the homogenizing mechanism is used for homogenizing and polishing the clustered chopped carbon fiber particles; and the drying mechanism is used for hardening the sizing agent on the homogenized chopped carbon fiber particles. According to the method, fluffy and scattered recycled carbon fibers are chopped, sizing treatment is evenly conducted firstly, then bundling and homogenization are conducted, recycled carbon fiber thermoplastic chopped particles which are convenient to apply on a large scale and high in value are obtained through the simple device, development of carbon fiber composite ma