US 11,897,173 B2
Injection molding apparatus with load-balancing mechanism
Martin Kestle, Everett (CA)
Assigned to Mold-Masters (2007) Limited, Georgetown (CA)
Filed by MOLD-MASTERS (2007) LIMITED, Georgetown (CA)
Filed on May 11, 2021, as Appl. No. 17/317,288.
Prior Publication US 2022/0362977 A1, Nov. 17, 2022
Int. Cl. B29C 45/17 (2006.01); B29C 45/07 (2006.01)
CPC B29C 45/1761 (2013.01) [B29C 45/07 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An apparatus for injecting a molten material comprising:
an injector for injecting the molten material;
a frame supporting the injector;
a rail for guiding the linear translation of the injector along the frame, the rail supported by the frame;
a first guide and a second guide slideably coupled to the rail, the second guide attached to the injector and spaced from the first guide along the rail; and
a bell crank including a first location, a second location, and a third location arranged in a triangle, the bell crank rotateably coupled to the first guide at the first location, the bell crank rotateably coupled to the second guide at the second location such that applying a linear force at the third location in a first direction from the second guide towards the first guide translates the first and second guides in the first direction along the rail.