Patent ID: 7052265
Filing Date: 2006-05-30
Classification: B29C

Abstract:
1. 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. 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; b. 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; c. said mounting including means for causing simultaneous radial adjusting movement of said curling screws together while maintaining the location of said center axis of said spacing circle; and a selectively operable adjuster acting on all of said curling screws simultaneously to cause said simultaneous movement of the curling screws, said curling screw mechanism comprising a curling screw mounting comprising a series of pocket cassettes each carrier a respective curling screw, each said pocket cassette having surmounted thereon a rotatable pulley and a perpendicular roller bearing pin, said series of pocket cassettes linked together by a single drive belt associated with each rotatable pulley to provide a drive means for each curling screw in association with a motorized drive pulley; said operable adjuster for the curling screws comprising: