Assembling machine for engine valve lock

The utility model discloses an engine air door lock nip assembly machine. A machine body and a sliding device are equipped on the working table face, and a cross connecting portion is provided on the top part of the machine body, and the upper end of a sliding block is hinge connected with a floor of the cross connecting portion by a connecting bar control device, and an outside press head is fixed and connecting on a lower end of the sliding block, and the lower part of the outside press head is tubular, and a spring and a inside press head are fixed in the tube from upside to down side, and besides the floor of the inside press head is equipped with a fillister adjusted to a end of a air door bar. The sliding device is arranged at the lower part of the outside press head, and a rotatory positioning board is hinge connected with the sliding device, and a row of the air-out stopping withdrawing nail and a row of the air-in stopping withdrawing nail are distributed side by side on the top side of the rotatory positioning board. The time for the utility model finishing pressing and fixing a air door block nip is totally just 1minute or so in need. Compared with the technique used in practice, not only the time is saved a lot, but the efficiency is enhanced and the operation is more simple and convenient.