Cut a device

The utility model discloses a cut a device, including the frame and be used for welder cut the silk cut a device, cut a device includes: limit baffle, the fixed setting in the frame, fly leaf, swing joint are in the frame, and just driving relatively through power device, limit baffle does the reciprocating motion straight line, the cutting edge lies in the last reason of relative limit baffle one side on the fly leaf, when controlling means, welding wire on welder stretched into to the below in clearance between fly leaf and limit baffle, controlling means control power device drive fly leaf moved towards limit baffle. The utility model discloses limit baffle and fly leaf have to set up controlling means in its below, the welder that will have the welding wire stretches into limit baffle and fly leaf clearance below, and it is caught by controlling means, and control the fly leaf by controlling means and locate to move towards limit baffle, thereby cut off the welding wire, the utility model discloses avoid