초록 ▼

Erected cartons are fed downstream on a dead plate by the various flight bars of a flight bar conveyor system, and between upper and lower pairs of side guides which are adjustable both laterally to accommodate cartons of various widths. Plows associated with the side guides preposition the closure

Erected cartons are fed downstream on a dead plate by the various flight bars of a flight bar conveyor system, and between upper and lower pairs of side guides which are adjustable both laterally to accommodate cartons of various widths. Plows associated with the side guides preposition the closure flaps of the cartons so that each of these flaps is received in a slot of an adhesive applying head so that bands or strips of adhesive are applied to these flaps. The adhesive applying heads are uniquely mounted in that they are conveniently prepositioned for accommodating the flaps when the side guides are adjusted to the width of the carton. Two such heads are pivotally mounted in a block provided on the longitudinal center line of the machine, with a link being provided between each adhesive applying head and the side guide structure. In one version this link is slidably received in its associated adhesive applying head so as to permit movement of the head along the link in order to automatically vary the angle of the head to accommodate cartons of various widths.

대표청구항 ▼

In an apparatus for feeding erected cartons in a downstream longitudinal direction, said cartons having side panels with closure flaps pivotally connected thereto on laterally spaced longitudinally extending fold lines aligned with the downstream direction, the improvement comprising: a. positioning

In an apparatus for feeding erected cartons in a downstream longitudinal direction, said cartons having side panels with closure flaps pivotally connected thereto on laterally spaced longitudinally extending fold lines aligned with the downstream direction, the improvement comprising: a. positioning means for orienting said flaps at predetermined equal but opposite angles of 90°or less measured with respect to the plane defined by the fold lines, b. adhesive applying heads having guides for receiving and applying a band of adhesive to said flaps oriented at said predetermined angles, c. support means for said adhesive applying heads, including a pivot block on the longitudinal center line of the apparatus for pivotally supporting said heads, d. said support means further including at least two links each of which links has one end connected to one of said heads, and e. means for adjustably mounting the other end of both said links for movement toward and away from said block to vary the angular position of said slots in said heads to accommodate the flaps of cartons having a lateral dimension between said fold lines which can vary, the smaller size cartons having their flaps oriented at steeper angles and larger cartons at shallower angles, the adhesive applying heads being movable only angularly relative to said block.