HEATING COOKER

PURPOSE:To reduce the cost by forming a hole or notch in the extension of the top plate of the heating chamber near a recess in it for assuring the material movement at the time of the draw molding of the recess so that the drawing can be completed to a desired depth by a single draw molding. CONSTITUTION:An incision 23 is formed in the area which becomes the extension 12a of the top plate 12 along a draw molding area A. Because of a fact that the draw molding area A is located in the right rear corner of the material 22, the movement of the material from the rear and the right of the drawn molding area A where the clamp area is relatively small is facilitated at the time of the draw molding of the recess 18. Further, because the incision 23 is formed near the front of the drawn molding area A, the clamping area in the space between the drawn molding area A to said incision 23 becomes relatively small, and so, the movement of material from said space is also faciliated, allowing the recess 18 to be drawn to a required depth by a single draw molding process.