Freeze-drying disc mounting assembly

The utility model discloses a freeze-drying tray installation assembly which comprises a shell, control boxes are arranged on the two sides of an inner cavity of the shell, the opposite sides of the two control boxes penetrate to the outer side of the shell, movable plates are arranged in inner cavities of the control boxes, the bottoms of the opposite sides of the two movable plates are fixedly connected with push blocks, and the push blocks are fixedly connected with the outer side of the shell. First magnets are fixedly connected to the tops of the opposite sides of the two movable plates, second magnets are fixedly connected to the inner wall of the control box, friction blocks are fixedly connected to the opposite sides of the two movable plates, the opposite sides of the two friction blocks penetrate to the outer side of the control box, and a limiting plate is arranged at the bottom of an inner cavity of the control box. By arranging the shell, the control box, the movable plate, the push block, the fi