Manipulator for moving and positioning a piece between a first position and a second position along a predefined path, having: - a load bearing structure provided with a support element; - a mobile arm for gripping the piece comprising a driven pin or transferor projecting transversely from said mobile arm; - a guide wall supported by said support element having a rear face (15") facing towards the support element and an opposite front face, wherein said guide wall comprises a curved guide groove or cam configured to slidingly engage said driven pin or transferor so that said pin or transferor can travel along the curvilinear guide groove or cam for its entire length dragging the mobile arm; - an input shaft of the oscillating rotary movement rotatably connected to said support element in a substantially orthogonal manner to the guide wall, said shaft defining a rotation axis (S-S); - an oscillating arm fixed orthogonally to said input shaft of the movement, said oscillating arm having a radial groove with respect to the input shaft of the movement, said radial groove slidingly engaging said driven pin or transferor so that said driven pin or transferor can travel along the radial groove for its entire length; so that the input shaft of the rotary oscillating movement drags in rotation the oscillating arm, said oscillating arm dragging the driven pin or transferor simultaneously along the radial groove and along the guide groove, dragging the movable arm along said predefined path; - the input shaft of the oscillating rotary movement and the oscillating arm are both positioned on the side of the rear face (15") of the guide wall, wherein said manipulator is characterized in that the mobile gripping arm is arranged on the side of the front face of the guide wall. - a load bearing structure provided with a support element; - a mobile arm for gripping the piece comprising a driven pin or transferor projecting transversely from said mobile arm; - a guide wall supported by said support element having a rear face (15") facing towards the support element and an opposite front face, wherein said guide wall comprises a curved guide groove or cam configured to slidingly engage said driven pin or transferor so that said pin or transferor can travel along the curvilinear guide groove or cam for its entire length dragging the mobile arm; - an input shaft of the oscillating rotary movement rotatably connected to said support element in a substantially orthogonal manner to the guide wall, said shaft defining a rotation axis (S-S); - an oscillating arm fixed orthogonally to said input shaft of the movement, said oscillating arm having a radial groove with respect to the input shaft of the movement, said radial groove slidingly engaging said driven pin or transferor so that said driven pin or transferor can travel along the radial groove for its entire length; so that the input shaft of the rotary oscillating movement drags in rotation the oscillating arm, said oscillating arm dragging the driven pin or transferor simultaneously along the radial groove and along the guide groove, dragging the movable arm along said predefined path; - the input shaft of the oscillating rotary movement and the oscillating arm are both positioned on the side of the rear face (15") of the guide wall, wherein said manipulator is characterized in that the mobile gripping arm is arranged on the side of the front face of the guide wall.