Patent ID: 6393888
Filing Date: 2002-05-28
Classification: B21F

Abstract:
A spring winding device, particularly for spring winding machines, for producing, selectively, right-hand or left-hand helical springs from wire comprising:pull-in rollers for transporting the wire along a wire guide axis through a wire guide; two winding apparatuses, each of which having a slide guide body in which a slide is displaceably arranged in such a way that a winding tool connected with the slide is guided so as to be moveable linearly relative to a point at which the wire exits the wire guide; said slide guide body being swivelable at an end region remote of the wire guide around a swiveling axis directed vertically to the wire guide axis and parallel to a center plane extending through the wire guide axis; said two winding apparatuses being arranged on different sides of said center plane; a drive for the movement of the slide and a cam drive controlled by a cam disk for swiveling the slide guide body about the swiveling axis are allocated to each winding apparatus; a shared cam disk which is swivelable by a program-controlled motor and having two control portions and at least one rest portion is allocated to the cam drives of both winding apparatuses; each control portion being configured for introducing controlling movements in one of the two cam drives and rest portions being configured for introducing no controlling movements in the shared cam drive, and, by rotation of the cam disk, one of the control portions for producing helical springs in one winding direction can be connected to the associated cam drive for control thereof, while the other cam drive contacts the rest portions or one of the rest portions; and said controlled cam drive cooperating in a program-controlled manner with the drive unit for the movement of one of the slides, while the drive unit of the other slide is switched off.