US 11,731,330 B2
Molten plastic delivery system with push-pull cable actuation
Jeffrey Scott Thompson, Burlington (CA); Karsten Stengeli, Guelph (CA); Haiqian Lu, Mississauga (CA); and Robert Rinaldi, Brampton (CA)
Assigned to MOLD-MASTERS (2007) LIMITED, Georgetown (CA)
Filed by MOLD-MASTERS (2007) LIMITED, Georgetown (CA)
Filed on Apr. 7, 2021, as Appl. No. 17/224,471.
Claims priority of provisional application 63/006,964, filed on Apr. 8, 2020.
Prior Publication US 2021/0316486 A1, Oct. 14, 2021
Int. Cl. B29C 45/28 (2006.01)
CPC B29C 45/281 (2013.01) [B29C 2045/2813 (2013.01); B29C 2045/2831 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A molten plastic delivery system comprising:
a plurality of plates;
a manifold defining a network of channels for conveying a molten plastic from a manifold inlet to a manifold outlet, the manifold housed in the plurality of plates;
a nozzle defining a nozzle channel having an upstream nozzle channel opening and a downstream nozzle channel opening, the upstream nozzle channel opening in fluid communication with the manifold outlet;
a valve pin received in the nozzle channel and reciprocable within the nozzle channel between a closed position to prevent the molten plastic from passing through the downstream nozzle channel opening and an open position to allow the molten plastic to pass through the downstream nozzle channel opening;
a bell crank having a first arm and a second arm connected at and rotatable about a pivot, the first arm coupled to the valve pin; and
a push-pull cable coupled to the second arm such that angularly pushing the second arm about the pivot via the push-pull cable moves the valve pin to the open position and angularly pulling the second arm about the pivot via the push-pull cable moves the valve pin to the closed position.