Die and punch assembly for compacting powder material having deflection compensator

Abstract

Abstract A DIE AND PUNCH ASSEMBLY FOR USE ON A POWDER COMPACTING PRESS FOR MAKING ARTICLES COMPACTED FROM A POWDER AND INCLUDING A DEFLECTION COMPENSATOR WHICH ALLOWS THE PUNCH TO REMAIN ENGAGED WITH THE SUPPORT THE COMPACTED ARTICLES AFTER THE COMPACTING PRESSURE APPLIED TO THE ARTICLE IS RELIEVES. THE ASSEMBLY COMPRISES A DIE PLATE APPROPRIATELY MOUNTED TO THE PRESS AND INCLUDES ONE OR MORE DIE CAVITIES, EACH OF WHICH HAS A PUNCH SLIDABLY AND SNUGLY DISPOSED THEREIN. THE PUNCH IS ACTUATED BY A PUNCH UPPER SUPPORT WHICH, IN TURN, IS SLIDABLY CARRIED BY A PAIR OF POSTS EXTENDING BELOW THE DIE PLATE TO PERMIT RECIPROCABLE MOVEMENT OF THE PUNCH WITHIN THE DIE CAVITY. A SECOND PUNCH SUPPORT SLIDABLY CARRIED BY THE POSTS IS POSITIONED BELOW THE PUNCH UPPER SUPPORT AND OPERATIVELY CONNECTS THE PUNCH UPPER SUPPORT TO AN ACTUATING RAM WHICH SELECTIVELY CAUSES RECIPROCATION OF THE PUNCH WITHIN THE DIE CAVITY. A CORE ROD IS PROVIDED HAVING ONE END DISPOSED WITHIN A LONGITUDINAL BORE FORMED IN THE PUNCH, WHILE THE OTHER END OF THE CORE ROD IS FIXEDLY MOUNTED TO A CORE ROD SUPPORT WHICH, IN TURN, IS FIXEDLY SUPPORTED BETWEEN THE PUNCH UPPER AND LOWER SUPPORTS BY THE PAIR OF POSTS. THE PUNCH LOWER SUPPORT CARRIERS THE DEFLECTION COMPENSATOR WHICH COMPRISES A BUSHING FIXEDLY MOUNTED WITHIN A CENTRALLY DISPOSED BORE IN THE PUNCH LOWER SUPPORT AND IN WHICH THE UPPER END OF THE ACTUATING RAM IS SLIDABLY MOUNTED FOR RELATIVE RECIPROCABLE MOVEMENT. THE ACTUATING RAM HAS AN END PORTION EXTENDING THROUGH THE BRUSHING THE CARRIES AN AXIALLY ADJUSTABLE ENLARGED HEAD ADAPTED TO ENGAGE THE UPPER SURFACE OF THE PUNCH LOWER SUPPORT TO MOVE THE PUNCH SUPPORTS AND THUS THE PUNCH DOWNWARDLY IN THE DIE CAVITY, WHILE AN ENLARGED AXIALLY ADJUSTABLE INTERMEDIATE PORTION OF THE ACTUATING RAM IS ADAPTED TO ENGAGE THE LOWER PORTION OF THE BUSHING TO IMPART AN UPWARDLY DIRECTED CORE TO THE PUNCH SUPPORTS TO DRIVE THE PUNCH UPWARDLY INTO THE DIE CAVITY TO COMPACT THE POWDER MATERIAN INTO A COMPACTED ARTICLE. THE PUNCH ACTUATING MECHANISM IS PROVIDED WITH A SPRING LOADES LOST MOTION LINK TO BIAS THE PUNCH END INTO ENGAGEMENT WITH THE COMPACTED ARTICLE TO PREVENT DAMAGE THERETO WHEN THE PUNCH ACTUATING RAM IS RETRACTED TO RELIEVE THE COMPACTING PRESSURE APPLIED TO THE ARTICLE DURING COMPACTION.

Inventors

• 👤 Joseph E Smith

Bibliographic Details