Special laser etching auxiliary device for 3D printing microwave absorbing material

The invention relates to the technical field of laser etching, and discloses a special laser etching auxiliary device for a 3D printing microwave absorbing material, the special laser etching auxiliary device comprises a box body, a running assembly is arranged at the top end of the box body, a rectangular groove is formed in the top end of the box body, and limiting sliding rails are symmetrically and fixedly connected to the bottom end of the rectangular groove. A connecting plate is pulled through a telescopic air cylinder, V-shaped plates on the two connecting plates are promoted to move oppositely along with the connecting plate, limiting wheels on four short plates are pressed by a microwave absorbing material and rotate away from each other along a rotating shaft, limiting wheels on long plates on the V-shaped plates are promoted to rotate along with the limiting wheels, and meanwhile torsion reeds are pressed to contract; the four corners of the microwave absorbing material can be extruded oppositely,