Pneumatic and automatic feeder for label laser marking

The invention discloses a pneumatic and automatic feeder for label laser marking. The electric control and pneumatic control are adopted together. A label is placed into a feed hopper, the feed hopper is in a U-type open type and is composed of a fixed locating board and a movable locating board (20), the fixed locating board is fixed, the movable locating board (20) is installed on a movable locating installation board (21), two guide rods are adopted, two ball screws are used in cooperation and are connected through a chain, the ball screws can rotate synchronously, the movable locating board (20) keeps parallel with the fixed locating board, a hopper bottom board (2) can vertically move along a shaft supporting rail under the pushing of a worm gear and worm lift (27), a whole sliding workbench can move back and forth along another horizontal shaft supporting rail, and a long-stroke air cylinder (13) is controlled by a piston rod to vertically move. The electric control and the pneumatic control are matched, the working steps of feeding, marking and the like are controlled effectively, the stability when the system operates is ensured, and working efficiency is improved.