Riveting pin clamp for lock tongue cover plate

The invention discloses a riveting pin clamp for a lock tongue cover plate. The riveting pin clamp for the lock tongue cover plate comprises a base plate, air cylinder fixing plates, air cylinders, air cylinder connecting shafts, floating connectors, punch fixing blocks and pre-pressing blocks. The air cylinder connecting shafts, the floating connectors, the punch fixing blocks and punches are sequentially driven through the air cylinders. The punches move in second through holes, so that compression springs are compressed, and the pre-pressing blocks press a workpiece under the compression of the compression springs; the punches push elastic cylindrical pins at the same time, the elastic cylindrical pins are compressed through the second through holes of the pre-pressing blocks to be riveted into the workpiece easily, and the air cylinders return to be in the initial state after the elastic cylindrical pins are in place. According to the riveting pin clamp for the lock tongue cover plate, the four elastic cylindrical pins can be riveted at a time, and riveting efficiency is greatly improved; in addition, the air cylinders are used for providing power, and machining safety is greatly improved. Furthermore, by additionally arranging pressing plates, positioning shafts and the pre-pressing blocks, it is guaranteed that the lock tongue cover plate is stable and free of shaking in the riveting process, and the riveting quality is greatly improved.