Automatic lubricating device for can feeding screw of caging machine

The utility model discloses an automatic lubricating device for a can feeding screw rod of a caging machine, ring rotating blocks are arranged at the two ends of the can feeding screw rod, fixing blocks are arranged on the outer sides of two closed baffles, ring grooves are formed in the fixing blocks, the ring rotating blocks are rotationally installed in the ring grooves, and the ring rotating blocks are arranged on the outer sides of the two closed baffles. A lubricating oil tank body is arranged on the portion, above the fixing block, of the closed baffle, an oil adding device capable of communicating the lubricating oil tank body with the annular groove and lubricating the annular groove is arranged between the lubricating oil tank body and the annular groove, and annular rotating blocks at the two ends of the can inlet screw are rotationally arranged in the annular groove in the fixing block. In addition, a lubricating oil tank body is arranged on the sealing baffle, the lubricating oil tank body is com