US 11,938,667 B2
Side-gate injection molding apparatus and side-gate hot runner nozzle
Jiping Qian, Oakville (CA); and Beilei Yan, Mississauga (CA)
Assigned to MOLD-MASTERS (2007) LIMITED, Georgetown (CA)
Appl. No. 17/609,968
Filed by MOLD-MASTERS (2007) LIMITED, Georgetown (CA)
PCT Filed May 6, 2020, PCT No. PCT/CA2020/050609
§ 371(c)(1), (2) Date Nov. 9, 2021,
PCT Pub. No. WO2020/227817, PCT Pub. Date Nov. 19, 2020.
Claims priority of provisional application 62/846,206, filed on May 10, 2019.
Prior Publication US 2022/0219363 A1, Jul. 14, 2022
Int. Cl. B29C 45/27 (2006.01)
CPC B29C 45/2735 (2013.01) [B29C 45/2725 (2013.01); B29C 45/2738 (2013.01); B29C 2045/2761 (2013.01); B29C 2045/2798 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A side-gate nozzle comprising:
a nozzle body having a heater, a nozzle channel extending longitudinally into the nozzle body, and a bore in the nozzle body extending from an exterior side wall of the nozzle body to the nozzle channel, the bore includes a first lateral portion, a second lateral portion, and a step between the first lateral portion and the second lateral portion, the first lateral portion located closer to the nozzle channel than the second lateral portion;
a nozzle tip having a tip member, a tip channel extending through the tip member, and a sealing member in which the tip member is received; and
a transfer member comprising:
a bearing surface against which an abutment surface of the nozzle tip is slidably abutted;
a transfer channel extending therethrough in fluid communication between the nozzle channel and the tip channel;
a biasing portion having the bearing surface against which the abutment surface of the nozzle tip is seated, the biasing portion received within the second lateral portion;
an extension portion projecting from the biasing portion, the extension portion received within the first lateral portion; and
a shoulder between the biasing portion and the extension portion, the shoulder seats against the step,
wherein, in operation, thermal expansion of the transfer member along its length applies a sealing force against the abutment surface of the nozzle tip.