US 12,390,972 B2
Non-inflatable hollow tire mould
Mingjiang Wang, Xuzhou (CN); Li Liu, Xuzhou (CN); Shipeng Wen, Xuzhou (CN); and Feng Wang, Xuzhou (CN)
Assigned to Jiangsu Risingsun Tyre Co. Ltd., Yitang Town Xuzhou (CN)
Appl. No. 17/275,636
Filed by Jiangsu Risingsun Tyre Co., Ltd, Xuzhou (CN)
PCT Filed Apr. 21, 2019, PCT No. PCT/CN2019/083580
§ 371(c)(1), (2) Date Nov. 3, 2021,
PCT Pub. No. WO2020/057118, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 201811092275.7 (CN), filed on Sep. 19, 2018.
Prior Publication US 2022/0048232 A1, Feb. 17, 2022
Int. Cl. B29C 48/30 (2019.01); B29C 33/76 (2006.01); B29D 30/02 (2006.01); B29L 30/00 (2006.01)
CPC B29C 48/30 (2019.02) [B29C 33/76 (2013.01); B29D 30/02 (2013.01); B29L 2030/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An inflation-free hollow tire modeling die comprising:
a die base, at least one die core and at least one core holder;
wherein a front face, facing a discharge outlet of an extrusion forming machine, of the die base has a concave feeding cavity, and a bottom of the feeding cavity has a modeling cavity running through a back face of the die base;
wherein the at least one core holder comprises an arc support or a triangular support, wherein supporting feet of the arc support or triangular support are fixed to an outer edge portion of the feeding cavity, and a top of the arc support or triangular support is located in front of the modeling cavity and outside the concave feeding cavity;
wherein the at least one die core comprises a suspended die core whose main body is columnar, wherein the suspended die core corresponds to an inner cavity of a tire, a length direction of the suspended die core is perpendicular to the front face and the back face of the die base, a head end of the suspended die core is fixedly connected to the at least one core holder, and a tail end of the suspended die core is extended backward and positioned in the modeling cavity; and wherein a shape of a cross-section of the suspended die core and a relative position of the suspended die core in the modeling cavity are matched with respective internal structure and a shape of the tire, and a shape of a cross-section of the modeling cavity is matched with a contour of the tire.