Fixing clamp for optical fiber laser marking machine

The utility model discloses a fixing clamp for an optical fiber laser marking machine, which relates to the technical field of optical fiber laser marking machines and comprises a shell, a bottom plate is fixed on the lower surface of the shell, a bidirectional screw rod is transversely and rotatably arranged in the shell, and two groups of driven strips are sleeved on the outer wall of the bidirectional screw rod in a threaded manner. The top ends of the two driven strips extend out of the upper portion of the shell and are fixedly provided with L-shaped plates, two containing grooves are formed in the upper surface of the bottom plate, and positioning rods extending out of the front outer side and the rear outer side of the bottom plate are slidably arranged in the containing grooves. The sealing cloth strip can move back and forth along with the L-shaped plate, the stroke groove is sealed, dust is prevented from invading and being attached to the outer wall of the two-way lead screw, it is ensured that the