The utility model provides a board host computer is sent to roll -type of building material production line, includes rubberizing running roller, lower gluing roller wheel, assemble the driving gear on the one end shaft of lower gluing roller wheel, this driving gear in proper order with first, second idler meshing, the second idler again with the driven gear meshing of the epaxial installation ofrubberizing running roller wheel, gear motor rotatory and transmitted last, lower gluing roller with gear motor's rotary motion and takes turns to through the chain drive lower gluing roller wheel, realizes the synchronous revolution roll -in and send the board, as an organic whole by the torsion bar connection between the screw rod lifter, the last lead screw of screw rod lifter passes through Ytype joint and is connected with the connecting plate, the other end of this connecting plate passes through the bearing and installs at the wheel of rubberizing running roller epaxially, and promoting the motor, to drive left screw rod lifter rotatory. The utility model discloses a transmission of two -stage idler and promotion synchronous motors promote the lead screw, reach electrodeless regulation and synchronization regulation clearance, solve the problem that intensity of labour is big, work production efficiency is low.