Patent ID: 6941725

Claim:
A device for closing a box ( 1 ) with open ends, the box closed by folding a lateral closing flap ( 5 ) extending from an upper edge ( 6 ) oh lateral aperture ( 7 ) of one open end of said box ( 1 ) and having a foldable edge ( 8 ) joined to said lateral flap ( 5 ) by a connection line ( 9 ), said box ( 1 ) being moved along a packaging line (L) in a forward movement direction (W) while lying on a bottom wall ( 1 a ); the device comprising: folding means ( 14 ) rot folding said lateral flap ( 5 ) until the connection line ( 9 ) of said foldable edge ( 8 ) is in abutment against stop means ( 15 ), said stop means ( 15 ) being situated under said folding means ( 14 ); first pusher means ( 16 ), reciprocating in a direction crosswise with respect to said forward movement direction (W), between an inoperative position (A) and an operative position (B) in which the first pusher moans ( 16 ) and said stop means ( 15 ), engage with said foldable edge ( 8 ) to fold the foldable edge ( 8 ) toward the box ( 1 ); contrast means ( 17 ) located downstream of said stop means ( 15 ) and said first pusher means ( 16 ) with reference to said forward movement direction (W), said contrast means striking said edge ( 8 ) and keeping the edge elastically in a position raised with respect said bottom wall ( 1 a ) of said box ( 1 ); second pusher means ( 18 ), disposed crosswise and in alignment with said contrast means ( 17 ), and reciprocating in a direction transversal to said forward movement direction (W), said second pusher means moved synchronously with the first pusher means ( 16 ) between an inoperative position (C) and an operative position (D), in which the second pusher means ( 18 ) strike said lateral flap ( 5 ) to set said lateral flap against the box ( 1 ) and introduce said edge into said box ( 1 ); said contrast means ( 17 ) including a block ( 71 ), located beside and under said box ( 1 ) and pivoting on an axis (Z), which is substantially parallel to said forward movement direction (W), said block ( 71 ) oscillating on said axis (Z) against the elastic reaction means ( 73 ), so that the upper surface ( 74 ) of said block ( 71 ) receives said edge ( 8 ).