Fixture for laser engraving tool of PCB

The invention provides a fixture for a laser engraving tool of a PCB, and relates to the technical field of circuit board fabrication. The fixture comprises a placement plate and a rack body and is characterized by also comprising two groups of fixed clamping pieces and movable clamping pieces, wherein a top wall of the placement plate is arranged along a horizontal direction, the rack body is fixedly connected to the bottom of the placement plate, the two groups of fixed clamping pieces are arranged at two side edges, opposite to each other, of an arbitrary group of placement plate, the movable clamping pieces are respectively arranged at two side edges, opposite to each other, of another one group of the placement plate, each group of fixed clamping piece comprises a movable block, a first driving cylinder, a press plate and a first rotation driving piece, the movable block is arranged on the placement plate and slides towards one side of the other group of fixed clamping piece alonga horizontal direction,