| 摘要 |
The utility model provides an air feeder which can guarantee the strength and weld strength of boards, is light in weight, and prevents sink marks from being formed on the boards. The air feeder comprises a plurality of boards (20) which are of an approximately circular ring shape, and a plurality of blades (40), wherein the boards (20) are arranged at intervals in the axial direction, and the blades are erected between every two adjacent boards (20) respectively and arranged in the circumferential direction. A plurality of embedding grooves (21) and a plurality of thinning grooves (23) are formed in one surface of each board (20), wherein the embedding grooves (21) are combined with the axial ends of the multiple blades (40) in an embedded mode respectively, and the thinning grooves (23) are formed in the radial center portions between every two adjacent embedding grooves (21). |
