The handling device for cases and boxes contained in the cases, comprising a housing intended to receive a case, said housing being closed at a first longitudinal end and open at a second longitudinal end, a holding device (14) mounted at the level of the second end of the housing, the latter comprising two clamping jaws, said clamping jaws applying a clamping force to the case (E), an actuator for opening and closing said jaws, two stop jaws (36, 38), each (36, 38) being supported by a clamping jaw and being articulated in a free manner about and relative to the clamping jaw, springs (40) connecting said stop jaws (36, 38), such that opening of the clamping jaws causes opening of the stop jaws (36, 38) and the stop jaws (36, 38) can be opened independently of the clamping jaws.