Economize paper mold stock form box

The utility model relates to an economize paper mold stock form box is equipped with the mounting hole on the left side curb plate of casing or the backplate, the right open sides of casing is equipped with horizontal fixed axle on the curb plate of left side, the coaxial rotary drum that has concatenated on the fixed axle, and the rotary drum is spacing through nut axial on the fixed axle, is equipped with the plane spiral -shaped spring between the inner wall of rotary drum and fixed axle, and the plane spiral -shaped spring overlaps in the fixed axle, and its one end is fixed in the rotary drum inner wall, and its other end is fixed in the fixed axle, the outside of rotary drum is coaxial cup joints flexible sleeve, and the outer wall of rotary drum is the taper, and the sleeve anterior segment overlaps when the rotary drum to be opened along outside side stay radially gradually, and telescopic afterbody is equipped with spacing boss. Its simple structure, compactness can be controlled and once go out paper length, practice thrift the paper.