Patent ID: 6164949
Filing Date: 2000-12-26
Classification: B29C

Abstract:
An adjustable curling screw mechanism for a lip rolling machine adapted to form a rolled lip on the rim of a container by means of said curling screw mechanism, said curling screw mechanism comprising:a plurality of curling screws arranged about a circular space about a center axis, each curling screw rotated to carry out said forming, each curling screw formed with a helical groove engaging said container rim and progressively forming a lip as said container is axially advanced between said curling screws by rotation thereof;a mounting for each curling screw for enabling selective adjusting movement causing a selective increase or decrease of the radius of said spacing circle to enable adaptation to different sized containers;said mounting including means for constraining simultaneous radial adjusting movement of said curling screws together while maintaining the location of said center axis of said spacing circle; anda selectively operable adjuster acting on all of said curling screws simultaneously to cause said simultaneous movement.