Packaging unit for packaging articles in boxes and method for packaging articles in boxes

Packaging unit according to the preceding claim, wherein said adjustment device comprises a first adjustment element for modifying the inclination of said folding element (21) with respect to said movement trajectory (M).

Packaging unit according to any one of the preceding claims, wherein said adjustment device comprises a second adjustment element for displacing said folding element (21) along at least one direction transversal to said movement trajectory (M).

Packaging unit according to any one of the preceding claims, wherein said adjustment device comprises a third adjustment element for displacing said folding element (21) along a direction parallel to said movement trajectory (M).

Packaging unit according to any one of the preceding claims, wherein said folding element (21) defines a first impact surface (21A), for the abutment of said blank (7) with said folding device (20).

Packaging unit according to the preceding claim wherein said first impact surface (21A) has an arched shape, preferably convex towards said blank (7).

Packaging unit according to the preceding claim wherein said first impact surface (21A) has a profile shaped like an arc of circumference.

Packaging unit according to the preceding claim wherein said profile is an arc of a circumference defined by a radius comprised between about 50 mm and about 1000 mm, preferably between about 100 mm and about 500 mm.

Packaging unit according to one of the preceding claims and further comprising a second folding element (22) arranged on the opposite side with respect to an advancement plane (200) of said mandrel (10), so that said folding element (21) and said second folding element (22) are arranged to respectively abut a first portion (7A) and a second portion (7B) of said blank (7) that are provided on opposite sides of said blank (7) with respect to an advancement plane (200) defined by said mandrel (10) when moved along said movement trajectory (M).

Packaging unit according to one of the preceding claims wherein said folding element (21) is provided with at least one opening (23) intended to at least partially house said feed device (30) when interposed between said mandrel (10) and said folding device (20).

Packaging unit according to the preceding claim, wherein said folding element (21) comprises a plurality of prongs (24) intended to abut the blank (7), wherein two adjacent prongs (24) of said plurality of prongs (24) are separated by said at least one opening (23).

Packaging unit according to the preceding claim wherein said plurality of prongs (24) is constrained in an adjustable manner to a base (25) of said folding element (21).

Method according to the preceding claim and further comprising modifying the position of said second folding element (22) with respect to said movement trajectory (M).

Method according to the preceding claim wherein said modifying comprises displacing at least one prong (24) of said plurality of prongs (24) so as to define a first impact surface (21A) of said folding element (21) having a cylindrical shape, convex towards said blank.