Abstract:
The present invention describes a beverage can end which utilizes less material and has an improved internal buckle strength based on the geometric configuration of a chuck wall, inner panel wall and central panel, and which, in one embodiment utilizes an arcuate shaped chuck wall with a radius of curvature between about 0.150 inches and 0.250 inches with at least one transition zone positioned between an upper and lower end of the chuck wall.
Abstract:
A method of controlling the clamping movement of a single action drawing press having a fluid actuated pressure member wherein movement of the pressure member is interrupted by stops after a predetermined range of movement toward the base of the press.
Abstract:
A method of forming a tapered container in which the container is first redrawn to a partial length having first and second straight sidewall portions interconnected by a transition position and then redrawn to substantially its final length and tapered condition by drawing material from the transition portion. The method also optionally includes an overlength second redraw and a bottom profiling step utilizing the overdrawn portion to form the profile. The apparatus includes a plurality of stations wherein the redrawing is accomplished in the first instance with a tapered punch and straight walled die and in the second instance with a tapered punch and tapered die.
Abstract:
A method of forming a container end panel having a countersink radius and a chuckwall including preforming the radius and the chuckwall so that the chuckwall includes a straight wall portion tangent to the radius and reforming and reducing the radius without tooling restraint while holding pressure against the straight wall area. Apparatus for performing the method includes a punch core and a cooperating die core ring having complimental geometry for forming the chuckwall and radius configuration. The article formed by the method and apparatus includes an end panel having a straight wall portion between the normal tapered wall portion and countersink radius.
Abstract:
An integrated system and apparatus for completely forming the body of a two-piece can in one press, including performing the operations of cupping, drawing, redrawing, bottom profiling, and trimming. The system includes the concept of performing all of the operations required to form the body of a two-piece can in one press and includes feeding the precoated stock material, either in the form of sheet or coil, through a lubricator and into a feeding apparatus which, in turn, selectively feeds sufficient quantities of the stock material into a press. The press carries the double die necessary to perform the typical blanking and cupping operation and passes the cups out of the press in two lanes onto cup conveyors which feed them back into the press whereupon the draw-redraw dies on both sides of the cup die perform the additional steps of first redraw, second redraw, bottom profile, and trimming. The formed containers are then conveyed to secondary processing stations such as beaders, testers, or palletizers. In this fashion, a complete can body can be formed cheaply and economically without the normal expense of conventional forming mechanism.
Abstract:
A container lid assembly including a rotational and axial guide feature extending radially from an interior surface of a lid sidewall. The rotational and axial guide feature is designed to provide axial translation and retention of a cap or other accessory when the cap (accessory) is rotationally engaged with the lid sidewall. The cap and lid can include an interface that creates a liquid and gas impervious seal therebetween. The seal can be provided between a bottom surface of the cap and the top surface of the lid, a feature of the sidewalls of the cap and the lid, or any other sealing interface. The lid can include a score line defining a tear panel, wherein the tear panel can be opened when the score line is fractured. The score line can be fractured using a stay-on-tab, an incisor, a shearing force, etc.
Abstract:
The present invention describes a beverage can end which utilizes less material and has an improved internal buckle strength based on the geometric configuration of a chuck wall, inner panel wall and central panel, and which, in one embodiment utilizes a substantially linear chuck wall.
Abstract:
The present invention describes a beverage can end which utilizes less material and has an improved internal buckle strength based on the geometric configuration of a chuck wall, inner panel wall and central panel, and which, in one embodiment utilizes an arcuate shaped chuck wall with a radius of curvature between about 0.150 inches and 0.250 inches with at least one transition zone positioned between an upper and lower end of the chuck wall.