US 11,718,008 B2
Method of injection molding with down cavity detection
Bryler Collins, Milford, OH (US); Brian Matthew Burns, Mason, OH (US); Gene Michael Altonen, West Chester, OH (US); Brandon Michael Birchmeier, Morrow, OH (US); and Matthew Craver, Cincinnati, OH (US)
Assigned to IMFLUX INC., Hamilton, OH (US)
Filed by IMFLUX INC., Hamilton, OH (US)
Filed on May 19, 2021, as Appl. No. 17/324,299.
Claims priority of provisional application 63/039,356, filed on Jun. 15, 2020.
Prior Publication US 2021/0387393 A1, Dec. 16, 2021
Int. Cl. B29C 45/77 (2006.01); B29C 45/50 (2006.01); B29C 45/80 (2006.01); B29C 45/76 (2006.01); B29C 45/26 (2006.01)
CPC B29C 45/77 (2013.01) [B29C 45/26 (2013.01); B29C 45/50 (2013.01); B29C 45/768 (2013.01); B29C 45/80 (2013.01); B29C 2045/2683 (2013.01); B29C 2945/76006 (2013.01); B29C 2945/7621 (2013.01); B29C 2945/76083 (2013.01); B29C 2945/76187 (2013.01); B29C 2945/76498 (2013.01); B29C 2945/76568 (2013.01); B29C 2945/76595 (2013.01); B29C 2945/76665 (2013.01); B29C 2945/76943 (2013.01)] 29 Claims
OG exemplary drawing
 
1. A method of detecting and compensating for a non-operational mold cavity in an injection molding apparatus having a plurality of mold cavities and an injection molding screw or ram, the method comprising:
injecting, via the injection molding screw or ram, a molten thermoplastic material into the plurality of mold cavities;
measuring a first process parameter of the injection molding apparatus at a pre-determined time during or after the injecting, the measuring of the first process parameter comprising measuring a position of the injection molding screw or ram;
based on the first process parameter, determining whether one or more mold cavities of the plurality of mold cavities are non-operational; and
when it is determined that one or more mold cavities are non-operational, automatically adjusting the first process parameter or a second process parameter of the injection molding apparatus.