A capping head includes a body centered on a center axis, a cam follower configured to roll on an outer peripheral surface of a cone cam, a forming roller configured to move in a radial direction as the cam follower moves in the radial direction, and a biasing member configured to bias the cam follower and the forming roller toward a radially inner side, a plurality of the forming rollers include a plurality of thread forming rollers, and at least one tuck under forming roller, and the body has a body recess portion depressed downward from an upper surface of the body and configured to accommodate at least a lower end portion of the cone cam.

The capping head body is a body of a capping head used for the capping head that attaches a cap having a topped cylindrical shape to a mouthpiece portion of a can having a bottomed cylindrical shape, the capping head body including: a body main portion having a cylindrical shape; a spindle attachment portion disposed inside the body main portion and attached to a spindle; and a swing shaft housing portion disposed between an outer peripheral portion and an inner peripheral portion of the body main portion, in which the swing shaft housing portion is disposed around a periphery of the spindle attachment portion, and has a through-hole into which a swing shaft that swings a forming roller toward a peripheral wall of the cap is inserted, and the through-hole penetrates the body main portion in an up-down direction.

A capping head for a capping machine including: a locking unit having a connecting portion and a capsule-pressing locking portion, wherein the connecting portion can be reversibly translated relative to the capsule-pressing locking portion between proximal and distal positions; a capping unit for capping a containment body; a drive unit to reversibly move the capping unit between operating and rest configurations; a transmission, acting between the connecting portion and the drive unit, to determine a rotation of the drive unit during a movement of the connecting portion between the proximal and distal positions. The capping unit includes rolling elements which can be activated on the side wall of the capsule to shape it to match a threaded portion of the containment body and is rotationally integral with the drive unit to perform a capping of the containment body activating the rolling elements for deforming the side wall of the capsule.

A capping head for a capping machine including: a locking unit having a connecting portion and a capsule-pressing locking portion, wherein the connecting portion can be reversibly translated relative to the capsule-pressing locking portion between proximal and distal positions; a capping unit for capping a containment body; a drive unit to reversibly move the capping unit between operating and rest configurations; a transmission, acting between the connecting portion and the drive unit, to determine a rotation of the drive unit during a movement of the connecting portion between the proximal and distal positions. The capping unit includes rolling elements which can be activated on the side wall of the capsule to shape it to match a threaded portion of the containment body and is rotationally integral with the drive unit to perform a capping of the containment body activating the rolling elements for deforming the side wall of the capsule.

The capping head body is a body of a capping head used for the capping head that attaches a cap having a topped cylindrical shape to a mouthpiece portion of a can having a bottomed cylindrical shape, the capping head body including: a body main portion having a cylindrical shape; a spindle attachment portion disposed inside the body main portion and attached to a spindle; and a swing shaft housing portion disposed between an outer peripheral portion and an inner peripheral portion of the body main portion, in which the swing shaft housing portion is disposed around a periphery of the spindle attachment portion, and has a through-hole into which a swing shaft that swings a forming roller toward a peripheral wall of the cap is inserted, and the through-hole penetrates the body main portion in an up-down direction.