US 11,873,835 B2
Manufacturing method of axial air moving device with blades overlapped in axial projection
Yih-Wei Tzeng, Taoyuan (TW)
Assigned to STOKES TECHNOLOGY DEVELOPMENT LTD., Taoyuan (TW)
Filed by Stokes Technology Development Ltd., Taoyuan (TW)
Filed on Mar. 31, 2021, as Appl. No. 17/218,157.
Prior Publication US 2022/0316494 A1, Oct. 6, 2022
Int. Cl. F04D 29/38 (2006.01); F04D 29/32 (2006.01)
CPC F04D 29/386 (2013.01) [F04D 29/329 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A manufacturing method of an axial air moving device, comprising:
providing a model of the axial air moving device comprising a hub and a plurality of blades arranged annularly on a peripheral surface of the hub spacedly, and each of the blades being overlapped partially in an axial direction of the hub;
parting off the model of the axial air moving device in the axial direction of the hub to divide each of the blades into at least one first blade and at least one second blade which are non-overlapped in the axial projection respectively and to form a plurality of parting models;
performing a mold manufacture using axial-only demolding to the parting models to form at least one first mold and at least one second mold;
performing a respective injection molding by using the first mold and the second mold, the first mold forming a first parting model comprising a plurality of first blades, and a first hub connected with the first blades, and the second mold forming a second parting model comprising a plurality of second blades and a second hub connected with the second blades; and
connecting the first parting model and the second parting model to form the axial air moving device by hot pressing, tight fitting, ultrasonic welding, bonding or engaging;
wherein the hub is formed by connecting the first hub and the second hub, and each of the blades is formed by connecting a corresponding first blade and a corresponding second blade together, and
each of the corresponding first blade and the corresponding second blade connected to form a curved surface in a continuous manner;
wherein using the first parting mold and the second parting mold for injection moldings does not have to use sliders applied in the radial demolding.