Mesh belt of pre-pressing machine

The invention discloses a mesh belt of a pre-pressing machine, and belongs to the technical field of artificial board pre-pressing machine manufacturing. The mesh belt comprises a driving roller and a driven roller which are installed on a rack. A belt is wound around the driving roller and the driven roller. A spiral mesh belt body is arranged outside the belt. The descending part of the spiral mesh belt body is attached to the descending part of the belt. The ascending part of the spiral mesh belt body is arranged above the ascending part of the belt through a tensioning roller. The rack is provided with a deviation adjusting roller connected with the bottom face of the ascending part of the spiral mesh belt body in an abutted mode. A roll shaft is sleeved with the deviation adjusting roller and is installed on the rack through a fixed end and a movable end. The movable end of the roll shaft is connected with a telescopic cylinder. A deviation measuring device is arranged on the side, where the spiral mesh belt body is located, of the rack. Compared with the prior art, the problem that a belt of an existing pre-pressing machine is poor in air permeability can be solved.