The utility model relates to the technical field of
polyimide fibers, in particular to a
polyimide scattered filament chopping device. The utility model relates to a
polyimide scattered filament short-
cut cutting device which comprises a conveying belt, a steam heat box, a pressing piece, a setting agent spraying piece, a licker-in with a
brush, a pair of to-be-clamped feeding rollers and a
cut-off
machine. The steam heat box is arranged at the conveying starting end of the conveying belt, the conveying belt penetrates through the steam heat box, the pressing piece and the setting agent spraying piece to be sequentially arranged above the conveying belt in the conveying direction of the conveying belt, the licker-in with the
brush is arranged at the conveying
tail end of the conveying belt, and the
cut-off machines are arranged at the conveying
tail end of the conveying belt at intervals. And the pair of to-be-clamped feeding rollers is arranged between the licker-in with the
brush and the cut-off
machine. The problems that disordered fibers are difficult to comb, the
cutting length is not easy to control and the like can be effectively solved, the chopped fibers can be cut within 10 mm, and the requirements of high-performance composite materials and other fields with the high requirement for the specific length of the chopped fibers are met.