A drive assembly for a necker machine having a frame assembly and a plurality of processing stations includes: a plurality of drive sub-modules. Each drive sub-module includes: a primary input shaft, a first primary output shaft operatively coupled to the primary input shaft, and a second primary output shaft operatively coupled to the primary input shaft. For a first drive sub-module: the primary input shaft is operatively coupled to, and driven by, a main drive assembly motor, and the first primary output shaft is operatively coupled to, and drives, an associated first drive shaft of a first processing station. For a second drive sub-module: the primary input shaft is operatively coupled to, and driven by, the second primary output shaft of the first drive sub-module, and the first primary output shaft is operatively coupled to, and drives, an associated first drive shaft of a second processing station.

A base reformer assembly, and/or a base reformer roller die unit, includes a generally torpid chuck, a roller die, and a roller die unit actuating assembly. The roller die is movably disposed within the chuck. The roller die unit actuating assembly is structured to actuate the roller die. The roller die unit actuating assembly is operatively coupled to the roller die. Further, all elements of the roller die unit actuating assembly have a robust cross-sectional area.

A drive assembly for a necker machine having a frame assembly and a plurality of processing stations includes: a plurality of drive sub-modules. Each drive sub-module includes: a primary input shaft, a first primary output shaft operatively coupled to the primary input shaft, and a second primary output shaft operatively coupled to the primary input shaft. For a first drive sub-module: the primary input shaft is operatively coupled to, and driven by, a main drive assembly motor, and the first primary output shaft is operatively coupled to, and drives, an associated first drive shaft of a first processing station. For a second drive sub-module: the primary input shaft is operatively coupled to, and driven by, the second primary output shaft of the first drive sub-module, and the first primary output shaft is operatively coupled to, and drives, an associated first drive shaft of a second processing station.

A quick-change vacuum starwheel assembly including at least one of a quick-change height adjustment assembly or a quick-change vacuum starwheel mounting assembly.

An apparatus and tool set forming a three-dimensionally shaped portion on a shoulder of a can including an inner roll having a receiver for receiving the shoulder from inside; an outer roll for pressing the shoulder from outside; and a rotating unit for rotating the inner roll and the outer roll relative to the can. The shoulder is formed on a side of an upper end of a cylindrical body of the can in a can axis direction to be reduced in a diameter toward a side of a mouth of the can and to have a thickness of 0.1 to 0.3 mm. The receptor of the inner roll has at least one of a concave portion and a convex portion, and has a diameter reduced portion corresponding to a shape of the shoulder. Further, the inner roll and the outer roll are rotated by the rotating unit.

A can is provided. The can may include a shoulder, which is formed on a side of an upper end of a cylindrical body of the can in a can axis direction to be reduced in a diameter toward a side of a mouth of the can and to have a thickness of 0.1 to 0.3 mm, and has at least one of a concave portion and a convex portion. An inside diameter of the mouth may be 25 to 60 mm, a maximum outside diameter of the shoulder may be 50 to 70 mm, and a ratio of the maximum outside diameter of the shoulder to the inside diameter of the mouth may be 1.05 to 1.58.

A forming station for a necker machine including a frame assembly, an inboard turret assembly, an outboard turret assembly and a forming station quick-change assembly.

A manufacturing method comprises: a printing step printing on an outer peripheral surface of a cylinder part of a cylinder body; a necking step deforming the cylinder body after the printing step to form a tapered part in which a diameter is reduced upward from the cylinder part and a small-diameter part extending to an upper side of the tapered part; and a mouth part forming step deforming the small-diameter part to form the mouth part including a swelled part and a male thread part. In the printing step, ink is coated on a third coating region to be the cylinder part, a fourth coating region to be the tapered part, and a first coating region to be the swelled part. An apply amount of the ink per unit area on the first coating region is less than that of the ink per unit on the third coating region.

In order to manufacture a bottle can while eliminating the need for cleaning/drying after a mouth portion formation step, a bottle can manufacturing apparatus includes a necking processing part for carrying out a necking process while rotating a can body having a bottomed cylindrical shape around a rotational axis during formation of a mouth portion in the can; and a trimming processing part for subjecting the upper end portion of the can to slit processing and carrying out trimming while rotating the can while moving the can around the rotational axis. A plurality of necking processing parts are arranged in sequence, and the trimming processing part is arranged in sequence with at least one of the necking processing parts.

A can 1 is provided with a mouth part (4), a shoulder part (3), and a body part (2). The shoulder part (3) of the can (1) is decorated, without damaging the shoulder part (3), by forming at least one of a recess and a protrusion by a rotating process in which the shoulder part (3) is held between a receiver (11a), having a concave-convex shape, of an inner roll (11) and an outer roll (12) having a convex-concave shape corresponding to the concave-convex shape of the receiver (11a) of the inner roll (11).