Sealant applicator for can lids
AssigneeConal Corporation
InventorsNeal J. McConnellogue, Neal McConnellogue, Jr., Randall Nichols, Samuel T. Wineland
Life of this patent
Estimating the term…
Abstract
A sealant applicator for dispensing sealant material under pressure from a nozzle onto a succession of can lids which are advanced into alignment with the sealant applicator nozzle includes a needle valve which is positively driven in a forward and reverse direction to open and close the nozzle under the control of a pair of solenoids arranged in back-to-back relation and an adjustable limit stop member to regulate the amount of sealant applied to each can lid. One or more sealant applicators may be mounted for rotation in synchronism with a rotatable chuck table and are program-controlled to control the amount of sealant applied to each lid.
Claims13
In dispenser apparatus wherein a sealant material is discharged under pressure from a nozzle onto a plurality of articles, each article being advanced in succession into alignment with said nozzle, and valve means is associated with said nozzle to move between a closed position and an open position whereby to control the application of sealant onto each article over a predetermined time interval, the improvement comprising:
- reversible drive means associated with said value means for reversibly driving said valve means between said open and closed positions, said valve means including a valve member mounted for movement along a longitudinal axis in centered relation to said nozzle, said drive means defined by a paid of solenoids and means mounting said solenoids in closely spaced, coaxial relation to one another;
- and
- adjustable end stop means for limiting the distance of travel of said valve member when said valve member is driven to the open position thereby regulating the amount of sealant applied over the predetermined time interval.
In an end liner assembly wherein a quantity of sealant material is discharged under pressure from a sealant applicator nozzle onto each of a plurality of can lids, each lid being advanced in succession into alignment with said nozzle, and a needle valve having a valve stem movable along an axial path of travel between a closed position and an open position to control the application of sealant onto each said lid over a predetermined time interval, the improvement comprising:
- reversible drive means associated with said needle valve for reversibly driving said valve stem between said open and closed positions, said reversible drive means defined by a pair of solenoids and means mounting said solenoids in closely spaced, coaxial relation to one another and in coaxial relation to said valve stem;
- and
- adjustable end stop means mounted in coaxial, spaced relation to said valve stem including adjustable control means for adjusting the spacing between said end stop means and said valve stem whereby to limit the travel of said valve stem in advancing said valve stem to the open position thereby regulating the amount of sealant applied over the predetermined time interval.
Dependencies are inferred from the claim text.