Patent ID: 6926652
Filing Date: 2005-08-09
Classification: B65B

Abstract:
1. Device for closing a rear flap in a self-dimensioning machine for closing upper flaps of parallelepiped boxes, said device comprising a base with support surface for the boxes, a couple of drive belts placed at two opposite sides of said support surface that can be motorized and that can be brought close to each other to make a drive engagement with opposite sides of the boxes to drive the boxes along a feed direction, a head assembly movably arranged above said support surface, that carries closing devices for closing the front, rear and side flaps of the boxes and can be commanded to descend from a rest position to engage the closing devices with the upper flaps of the boxes and provide for closing the boxes, and height detecting means for detecting a height of the boxes, said head assembly comprises a vertically movable head and a vertically mobile touching group that are separately commanded to descend in succession towards said support surface up to respective positions depending on the height of the box detected by said height detecting means, and said closing devices comprise a rod for straightening the rear flap, that is pivoted on said head and is automatically commanded at an end of a descent of a head to rotate from a substantially horizontal rest position to a vertical working position and to translate in said feed direction of the box to carry out the straightening of the rear flap, and a lever pivoted on said touching group downstream from said straightening rod and flexibly kept in an angular position suitable for causing a surface thereof, as a result of the descent of the touching group, to contact the straightened rear flap and thus to cause the movement of the rear flap in a closing position.