Flat seaming machine band pulls and fixed -length cut device

The utility model discloses a flat seaming machine band pulls and fixed -length cut device, including drive mechanism and fixed -length cut mechanism, drive mechanism include the roller train, the roller train includes upper and lower parallel arrangement's last gyro wheel and bottom roller, it includes the gyro wheel to go up the bottom roller, one -way bearing and roller bearing, one -way bearing cup joints on the roller bearing, the gyro wheel cup joints on one -way bearing, the both ends pin joint of bottom roller roller bearing is on the mount, the one end of bottom roller roller bearing is connected through main shaft under swing arm and connecting rod and the flat seaming machine, go up the front portion of a both ends pin joint of gyro wheel roller bearing and a pendulum rod, the middle part pin joint of pendulum rod is on the mount, set up the elastic mechanism between pendulum rod rear portion and the mount, the elastic mechanism makes goes up gyro wheel extrusion bottom roller, fixed -length cut me