Automatic carton case manufacturing device

Claim 1

An automatic carton fabricating apparatus for fabricating a carton from a blank having a bottom panel, opposed pairs of side wall panels joined to said bottom panel along fold lines and each of which has a panel extension thereon joined to the side wall panel along a fold line and the panel extensions each have an end flap on the ends thereof joined to the panel extension on a fold line, and opposed pairs of end wall panels joined to the bottom panel along fold lines and each of which has a panel extension thereon joined to the end wall panel along a fold line and an end flap on each end thereof joined to the end wall panel along a fold line, said apparatus comprising blank feeding means for feeding blanks one at a time, a guide means positioned adjacent said blank feeding means for receiving blanks and supporting said blanks a pressing plate having the same shape as the bottom panel of the carton and positioned above said guide means and movable up and down above and below the level of said guide means to engage and press the upper surface of the blank in the area of the bottom panel after the blank has been received and stopped in a position on the guide means, and moving said receiving plate means downwardly, end flap folding guide members adjacent the path of said pressing plate and each having a folding edge and surface for engaging the end flaps on said end wall panels and folding them upwardly to an upright position as said pressing plate moves down, end wall panel folding guide members adjacent the path of said pressing plate and each having a folding edge and surface below the level of the folding edge on said end flap folding guide members and engaging both end wall panels and the panel extensions and folding them upwardly, whereby the end flaps on the end wall panels previously bent upwardly extend horizontally at right angles to said side wall panels, side wall panel folding guide members adjacent the path of said pressing plate and each having a folding edge and surface below the level of the folding edge on said end wall panel folding guide members for engaging the side wall panels and bending them upwardly as said pressing plate moves down, said end flap folding guide members having a further folding edge and surface adjacent the path of the end flaps on the ends of the side wall panel extensions for folding said end flaps perpendicular to the side wall panel extensions as said extensions move past said end flap folding guide memBers to an upright position, two sets of panel extension folding means positioned below said folding guide members, one set for the end wall panel extensions and one set for the side wall panel extensions, and each set having an opposed pair of wall panel extension folding devices for engaging the outside surface of the panel extensions and folding them 180* around the fold lines along which they are attached to the wall panels and against the inside surfaces of the wall panels, and a delivery device beneath said panel extension folding means for receiving a carton and conveying it out of said apparatus.