METHOD OF CLOSING CONTAINER BY COVER AND DEVICE TO THIS END Russian patent published in 2011 - IPC B65B7/00 

FIELD: transport, package.

SUBSTANCE: proposed method comprises placing cover on container neck and applying force thereon from above. Note here that, first, force is applied on first part of cover that includes first part of its perimetre making half of less of said perimetre and, then, on cover second part that includes cover geometrical center to remove excess air from under the cover. Now, force is applied on cover third part located opposite the first part. Note here that force is applied with the help of three piston-type air cylinders arranged vertically in one plane above appropriate cover parts. For this, compressed air is fed into air cylinder top sections at various flow rate to drive pistons downward at various speeds. Note also that air is fed into first air cylinder with its rod arranged above cover first part with flow rate Q₁, while air is fed into second air cylinder with its rod arranged above cover second part with flow rate Q₂, and air is fed into third air cylinder with its rod arranged above cover third part with flow rate Q₃. Mind that Q₁>Q₂>Q₃. In preset time, sufficient for cover closing and excess air removal from under the cover, compressed air feed in terminated and pistons are moved back into initial position. Invention covers also device to implement the above described method.

EFFECT: simplified method and device, higher reliability.

2 cl, 2 dwg