Speed-adjustable feeding knife rest device

The invention discloses a speed-adjustable feeding knife rest device. The speed-adjustable feeding knife rest device comprises a flywheel, a connecting seat, a worm shaft and a worm, wherein the flywheel is located on a knife rest bottom plate, the connecting seat is connected with the flywheel, the worm shaft is connected with the connecting seat, the worm is connected with the worm shaft, the worm is fixed in a worm box through a pair of bearings, a spiral groove is formed in the top of the worm box, and a screwing thread sleeve is screwed with the spiral groove in a matched manner; a second bearing is embedded in the screwing thread sleeve, a compressed spring is installed at the lower portion of the second bearing, a knob is installed on the top of the worm shaft in a matched manner, the screwing thread sleeve, the knob and the compressed spring are matched to enable the worm and the worm wheel to rotate in a matched manner to achieve slow feeding, the worm and the worm wheel can be disengaged,and only a