New structure of wax mould of superlarge wood-bar and ball-arm head

The utility model provides a new structure of wax mould of superlarge a wood-bar and a ball-arm head. The wax mould with a thin shell has a ball hitting surface, a bar holder, a neck part and a toe part. The neck part or the toe part is provided with a sprue, and a wax holder is arranged above the wax mould with a thin shell. The utility model is characterized in that the side edge of the wax mould with a thin shell is additionally provided with a convex rod wax, and a rod wax is bridged and stuck in a burning mode between the wax holder and the convex rod wax. So the air is swimmingly convected in the inner part of a casting mold formed by the wax mould with a thin shell. Molten metal can rapidly fill each area of the casting mold, and the casting disability rate is reduced.