Rough yarn twisting machine

The utility model relates to the technical field of textile processing equipment. The utility model relates to a yarn twisting machine. Rough twist yarn machine, a flyer is arranged on a rack of the coarse twisting machine. The bottom end of a right side wing arm of the flyer is fixedly connected with a pressing palm; a sleeve of the flyer is movably connected with a roving bobbin; grooves are formed in the positions, located on the left side and the right side of the roving bobbin, of the roving bobbin. A screw rod is connected into the groove; a sliding block is fixedly connected to the position, located in the groove, of the threaded rod. Threaded grooves are correspondingly formed in the positions, located at the screw rods, of the sliding blocks; a transverse plate is fixedly connected to the portion, located outside the groove, of the sliding block. A square groove is formed in the position, away from the roving bobbin, of the top end of the transverse plate, a rotating shaft isconnected to the position