Patent ID: 7874830

Claim:
A closure system ( 100 ) for molded caps formed by a body ( 204 ), a lid ( 206 ) and a hinge, the closure system ( 100 ) comprising: (a) two parallel guide rails ( 102 ); (b) for each guide rail ( 102 ), a carriage ( 108 ) mounted so as to be able to move in translation on the guide rail ( 102 ) between a downstream stop ( 122 ) and an upstream stop ( 112 ); (c) at least one closure bar ( 110 ) disposed between the two carriages ( 108 ); (d) for the or each closure bar ( 110 ), two wheels ( 116 a , 116 b ), each being mounted on one of the carriages ( 108 ), able to move in rotation about a rotation axis perpendicular to the direction of movement of the carriages ( 102 ) and each end of said closure bar ( 110 ) being mounted on one of the wheels ( 116 a , 116 b ) so as to be off-center with respect to said rotation axis; (e) for each carriage ( 108 ), a rack ( 208 ) designed to move parallel to said guide rail ( 102 ); (f) for each wheel ( 116 a , 116 b ), a maneuvering gear ( 214 ) able to move in rotation about said rotation axis, secured to and coaxial with said wheel ( 116 a , 116 b ) and designed to mesh with the rack ( 208 ); (g) for each carriage ( 108 ), a locking device ( 106 ) designed to lock said carriage ( 108 ) alternately with the rack ( 208 ) and the guide rail ( 102 ); and (h) for each rack ( 208 ), an activation device ( 104 ) designed to move said rack ( 208 ) firstly in a first direction ( 304 ) so as to bring each carriage ( 108 ) in abutment against its upstream stop ( 112 ) when the locking device ( 106 ) locks said carriage ( 108 ) with the rack ( 208 ), and then, when the locking device ( 106 ) locks said carriage ( 108 ) with said guide rail ( 102 ), so as to make each maneuvering gear ( 214 ) undergo a rotation that brings each closure bar ( 110 ) from a first position to a second position, a movement during which each closure bar ( 110 ) drives the lid ( 206 ) from the open position to the closed position, and secondly in a second direction ( 604 ) so as, when the locking device ( 106 ) locks said carriage ( 108 ) with said guide rail ( 102 ), to make each maneuvering gear ( 214 ) undergo a rotation movement ( 214 ) that returns each closure bar ( 110 ) from its second position to its first position, and then, when the locking device ( 106 ) locks said carriage ( 108 ) with the rack ( 208 ), so as to bring each carriage ( 108 ) in abutment against its downstream stop ( 122 ).