In the prior art, a clamping mechanism for products in a box comprises a moving plate, a moving frame and two cylinders, wherein one end of the moving frame is fixedly connected with the lower surface of the moving plate; Two cylinders are respectively fixed at the lower part of the moving frame; The telescopic rod of the cylinder is fixedly connected with a splint, and suction cup devices are fixedly installed at four corners of the splint. The expansion and contraction of the air cylinder drives the expansion and contraction of the clamping plates, thereby driving the two clamping plates to be close to or far away from each other, and realizing the clamping or loosening of the box.
However, when using the clamping mechanism to clamp the box, it is difficult for the two cylinders to keep synchronous relative motion, and it is difficult to clamp the box when clamping the box with irregular shape, and the box is easy to slide down, resulting in damage to the box and injury to workers. Therefore, we urgently need a clamping mechanism that can clamp the box, especially the gearbox, more tightly.