Chain feeding mechanism

The utility model relates to chain machining equipment, and particularly discloses a chain feeding mechanism. The chain feeding mechanism comprises a rack and a feeding driving wheel, wherein the feeding driving wheel is rotatably and movably connected with the rack; the driving device comprises a rotating main shaft which is rotatably and movably connected with the rack; the transmission assembly comprises a driving four-rod mechanism and a driven four-rod mechanism, the driving four-rod mechanism comprises a driving crank, a driving connecting rod and a driving rocker, and the driving crank is connected with the rotating main shaft and synchronously rotates along with the rotating main shaft; wherein the driven four-rod mechanism comprises a driven crank, a driven connecting rod and a driven sliding block, the driven crank is connected with the feeding driving wheel, and the driven crank and the feeding driving wheel are in one-way transmission; and the driven sliding block can slide relative to the rack un