US 12,246,472 B2
Mold core structure
Shun Fu Lin, Tainan (TW); and Yu-Chang Su, Tainan (TW)
Filed by RAYSPERT PRECISION INDUSTRIAL INC, Tainan (TW)
Filed on May 19, 2024, as Appl. No. 18/668,180.
Application 18/668,180 is a division of application No. 17/829,374, filed on Jun. 1, 2022, granted, now 12,017,386.
Claims priority of application No. 111110068 (TW), filed on Mar. 18, 2022.
Prior Publication US 2024/0300147 A1, Sep. 12, 2024
Int. Cl. B29C 45/34 (2006.01); B29C 33/04 (2006.01); B29C 33/10 (2006.01); B29C 33/38 (2006.01); B33Y 80/00 (2015.01)
CPC B29C 33/10 (2013.01) [B29C 33/04 (2013.01); B29C 33/3814 (2013.01); B29C 45/345 (2013.01); B33Y 80/00 (2014.12)] 4 Claims
OG exemplary drawing
 
1. A mold core structure, which is arranged on a mold, the mold core structure comprising:
a mold core body, which is a solid body made by three-dimensional printing, wherein one side of the mold core body is provided with a molding part, which is combined with an internal structure of the mold to form a cavity, there is a conformal air duct inside the mold core body, the conformal air duct has at least one main air duct and a plurality of secondary air ducts, the main air duct has a first end and a second end, the first end is located on one side of the mold core body, and connected to an external pneumatic control device, the pneumatic control device controls air to enter or exit the cavity through the conformal air duct, the second end thereof is located inside the mold core body, a path of the main air duct is freely wound within the molding part between the first end and the second end, one end of each of the secondary air ducts is communicated with the main air duct, and another end thereof is communicated with the molding part and disposed towards an ejection direction of a finished product.