Method and apparatus for shaping a metallic container end closure

Information

  • Patent Grant
  • 7500376
  • Patent Number
    7,500,376
  • Date Filed
    Friday, July 29, 2005
    19 years ago
  • Date Issued
    Tuesday, March 10, 2009
    15 years ago
Abstract
The present invention describes an apparatus and forming process to manufacture container end closures with improved internal buckle strength. The present invention provides greater material and dimensional control during the forming process by utilizing a pressure sleeve to provide support to at least a portion of an end closure chuck wall and seaming panel radius while placing an end closure countersink in compression during the forming process.
Description
FIELD OF INVENTION

The present invention relates to a manufacturing process for forming metallic containers and container end closures, and more specifically a method and apparatus for forming high strength geometries while maintaining necessary chuck wall and seaming panel characteristics.


BACKGROUND OF INVENTION

Metallic beverage can end closures have historically been designed and manufactured to provide a stiffening bead referred to as countersink. This feature may include vertical walls attached by a full radius bottom forming a channel, and in some embodiments may incorporate arcuate shapes or other geometric profiles. Absolute vertical walls may not exist, but generally the more vertical they become the greater the resistance to deformations resulting from internal pressure.


Beverage can bodies and end closures must be durable to withstand high internal pressures, yet manufactured with extremely thin and durable materials such as aluminum to decrease the overall cost of the manufacturing process and the weight of the finished product. Accordingly, there exists a significant need for a durable beverage can end closure which can withstand the high internal pressures created by carbonated beverages, and the external forces applied during shipping, yet which are made from durable, lightweight and extremely thin metallic materials with geometric configurations which reduce material requirements. To obtain these characteristics, can end closures require aggressive material working to achieve the various forms and geometries, which is generally accomplished utilizing a male/female tool combination. Unfortunately, this process may lead to inconsistencies within a given contour or geometry. Formation inconsistencies also apply to strength performance. The aggressive forming within the countersink may alter other characteristics within the body of the entire structure. Thus, there is a significant need to provide an apparatus and material forming technique which provides improved end closure on container geometries which have improved strength and buckle resistance. These features are obtained in one embodiment by placing the end closure material in compression during forming to avoid thinning and unwanted material deformation, while simultaneously supporting certain portions of the end closure chuck wall and seaming crown geometry during forming while not supporting other portions to create a predetermined shape.


One patent related to a method and apparatus for producing a container end closure countersink is described in U.S. Pat. No. 5,685,189, (the “'189 patent”) which is incorporated herein by reference in its entirety. In the '189 patent, a portion of the countersink is formed when the countersink is unsupported by tooling while the countersink is placed in compression. Unfortunately, with lighter gage stock materials this process has been found to allow unwanted deformation in the chuck wall and seaming crown, and thus inconsistencies in the end closure geometry.


SUMMARY OF THE INVENTION

The present invention relates to an apparatus and method for forming a preferred geometric shape in containers and end closures utilizing thin walled materials (0.0084 or less gauge) which have improved strength characteristics and material properties. Thus, in one aspect of the present invention a “free forming” process is used in the manufacturing of a metallic container end closure, wherein at least a portion of the material is placed in compression during forming, and is thus less likely to become “coined” or thinned, and ultimately weakened. It is a further aspect of the present invention to provide a method and apparatus for forming a predetermined shape from a metallic material wherein a portion of the metallic material is unsupported by a tool during formation. Thus, a portion of the metallic material is allowed to “free form” into a desired shape without being substantially supported on both the entire upper or lower surface of the material.


It is a further aspect of the present invention to provide a forming press to form a preferred geometry in a metallic end closure with existing high speed forming processes currently known in the industry and having improved reliability. Thus, in one aspect of the present invention an inner pressure sleeve is utilized in combination with critical forming parameters to assure that the end closure achieves a predetermined geometry, and is extracted efficiently from the forming process at speeds of 1800-11,000 end closures/minute.


It is a further aspect of the present invention to provide an inner pressure sleeve which is driven with pins extending between itself and either a pneumatic piston, spring plate or individual springs to apply a sufficient force to support a portion of an end closure chuck wall to form a preferred geometry during manufacturing.


It is another aspect of the present invention to provide an apparatus and method for forming a preferred geometric shape in container end closures where other portions of the end closure are supported on both an interior and exterior surface to prevent movement and unwanted deformation, while another portion is allowed to “free form”. Thus, in one embodiment of the present invention a “pressure sleeve” is used to support an end closure chuck wall and/or the seaming panel radius against a die core ring during forming, while at least a portion of the countersink is placed in compression to form a preferred geometry. Thus, in one aspect of the present invention an apparatus for forming a preferred shape in a metallic blank to create a beverage container end closure with a preferred geometry. It is another aspect of the present invention to provide a method and apparatus for forming improved end closure geometries by generally utilizing tooling equipment which is well known in a container end closure manufacturing plant, and thus requires only minor modifications to implement. Thus, in one embodiment of the invention, an apparatus is provided to form a metallic end closure which generally comprises:


a first tool in opposing relationship to a second tool which is adapted to provide a clamping force on a portion of a seaming panel of the metallic material;


a third tool in opposing relationship to a fourth tool which is adapted to providing a clamping force on a central panel portion of the metallic material;


a fifth tool positioned between said first tool and said third tool, which is adapted to support at least a portion of a chuck wall portion of said metallic material; and


providing a reciprocating motion between at least said fifth tool and said first and second tools while a portion of a countersink in the container end closure remains unsupported, wherein a preferred geometry is created in the countersink producing a material thickening, thus avoiding a reduction of material thickness of the countersink.


In another aspect of the present invention, a method for forming a predetermined shape in a metallic container end closure is provided herein, the end closure generally comprising a seaming panel interconnected to a downwardly extending chuckwall, a central panel having a substantially vertical center axis, and a countersink integrally interconnected to a lower portion of the chuck wall and the central panel, comprising:


positioning an end closure blank in a forming press;


providing a clamping force on at least a portion of the seaming panel between a first tool and a second tool;


providing a clamping force on at least a portion of the central panel between a third tool and a fourth tool to substantially prevent movement of the central panel;


supporting at least a portion of the chuckwall on both an interior surface and an exterior surface to substantially prevent movement of at least a portion of the chuckwall;


supporting a first portion of the countersink with at least one of said third tool and said fourth tool while allowing another portion of the countersink to remain unsupported; and


providing a compressive force on the countersink while retaining the chuck wall in a preferred position, wherein the end closure is formed into a predetermined shape.





BRIEF DESCRIPTION OF THE DRAWINGS


FIG. 1 is a cross-sectional front elevation view of a typical beverage container end closure;



FIG. 2 is a cross-sectional front elevation view of another embodiment of a beverage container end closure;



FIG. 3 is a cross-sectional front elevation view of another embodiment of a beverage container end closure;



FIG. 4 is a cross-sectional front elevation view of an end closure being formed in a prior art single action forming press;



FIG. 5 is a cross-sectional front elevation view of the end closure countersink shown in FIG. 4 as the countersink is being formed;



FIG. 6 is a cross-sectional front elevation view of a prior art apparatus used to form an end closure as disclosed in U.S. Pat. No. 5,685,189;



FIG. 7 is a cross-sectional front elevation view of the prior art apparatus depicted in FIG. 6 and further identifying movement in the chuck wall;



FIG. 8 is a cross-sectional front elevation view of one embodiment of the present invention and identifying an inner pressure sleeve positioned against the chuck wall and the forces acting on the end closure during countersink forming;



FIG. 9 is a diagram depicting the timing of the inner pressure sleeve and forming cycle as the inner pressure sleeve travels from top dead center to bottom dead center and returning to top dead center;



FIG. 10 is a cross-sectional front elevation view of one embodiment of the present invention shown during forming of an end closure and identifying a pressure sleeve providing support to a portion of a chuck wall and inner seaming panel radius;



FIG. 11 is a cross-sectional front elevation view depicting one embodiment of an inner pressure sleeve;



FIG. 12 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 13 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 14 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 15 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 16 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 17 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 18 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 19 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 20 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 21 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 22 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;



FIG. 23 is a cross-sectional front elevation view comparing the prior art forming apparatus on the right hand portion of the drawing and one new embodiment of the present invention shown on the left hand side of the drawing during the forming process;





While an effort has been made to describe various alternatives to the preferred embodiment, other alternatives will readily come to mind to those skilled in the art. Therefore, it should be understood that the invention may be embodied in other specific forms without departing from the spirit or central characteristics thereof. Present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the invention is not intended to be limited to the details given herein.













#
Component
















1
Unseamed beverage end closure


2
Seaming panel


3
Outer seaming panel radius


4
Seaming panel radius


5
Inner seaming panel


6
Chuck wall


7
Countersink


8
Countersink outer panel wall


9
Countersink inner panel wall lower portion


10
Countersink inner panel wall


11
Center panel radius


12
Center panel


13
Uncurled seam height


14
Metallic material


15
Die construction, shown at the stop position


16
Blank punch


17
Cut edge


18
Draw ring


19
Die core ring


20
Panel punch


21
Countersink punch


22
Outer pressure sleeve


23
Re-draw die


24
Inner pressure sleeve


25
Inner panel wall lower end


26
Cup radius


27
First countersink radius


28
Second countersink radius


29
Third countersink radius


30
Cup bottom


31
Blank punch face


32
Blank punch inner diameter


33
Draw ring face


34
Die core ring top surface


35
Die core ring outermost diameter


36
Die core ring inner wall


37
Panel punch face


38
Panel punch outer wall


39
Panel punch radius


40
Panel punch core angle


41
Die core radius


42
Die core face


43
Knockout face









DETAILED DESCRIPTION

Referring now to FIGS. 1-3, cross-sectional front elevation views are provided of alternative embodiments of uncurled beverage can end closures capable of being formed with the process defined herein. Other end closure geometries not shown herein may also be formed using the invention described herein as appreciated by one skilled in the art. More specifically, a metallic beverage can end closure 1 is generally comprised of a circular seaming panel 2, a chuck wall 6, a countersink 7, a central panel 12, and an inner panel radius 11 which interconnects the central panel 12 to the countersink 7. Further, the uncurled seam height 13 may extend beyond the seaming panel 2. The circular seaming panel 2 is additionally comprised of an outer seaming panel radius 3, seaming panel radius 4, and inner seaming panel radius 5. The seaming panel 2 is designed for interconnection to a neck of a container by double seaming or other methods well known in the art. The countersink 7 is generally comprised of an outer countersink panel wall 8, a countersink radius 9, and an inner countersink panel wall 10. In some embodiments, the chuck wall 6 may additionally be comprised of multiple straight angles, radii and arcs depending on any specific application, and as appreciated by one skilled in the art the process described herein is not limited to any specific end closure shape or geometry.


Referring now to FIG. 3, another embodiment of an end closure capable of being formed with the present process is provided herein. In this figure the terms “A” represent a specific angle, “D” a specific diameter, “G” and “H” a specific height, “R” a specific radius and “W” a specific width. As appreciated by one skilled in the art, any of these variables may be modified to provide an end closure specifically suited for a given container, pressure, projected use, etc.


Referring now to FIGS. 4 and 5, a cross-sectional front elevation view of one embodiment of a prior art single action press for forming a container end closure as shown herein. More specifically, FIG. 5 identifies the cross-sectional front elevational view showing in greater detail the end closure countersink geometry with respect to the forming tool shown in FIG. 4. As shown in FIGS. 4-5, the seaming panel 2 of the uncurled beverage shell 1 is held in position between the die core ring top surface 34 and the knock out or pressure sleeve face 43, while the end closure chuck wall is positioned against the die core ring inner walls 36 The end closure central panel 12 is clamped between the countersink punch 21 and the panel punch 20. FIG. 5 depicts in greater detail the geometry of the end closure 1 which depicts the positioning of the die core ring 19, the panel punch 20 and the die core 21.


Referring now to FIGS. 6 and 7, a front cross-sectional elevation view of a prior art method of forming an end closure is provided herein, and as described in U.S. Pat. No. 5,685,189 to Nguyen and Farley. More specifically, the positioning of the end closure 1 is identified and more specifically shows where a clamping force is placed on the end closure seaming panel and central panel as depicted by the arrows. More specifically, the numbering related to these drawings in FIGS. 5D and 5E are found in the '189 patent, which is incorporated herein in reference in its entirety.


Referring now to FIG. 8, a cross-sectional front elevation of one embodiment of the present invention is provided herein, and which further identifies the use of an inner pressure sleeve 24 which is operably positioned opposite the die core ring to hold the end closure chuck wall 6 and seaming panel radius 5 in a preferred position. More specifically, the inner pressure sleeve 24 provides support for the chuck wall 6 and seaming panel radius 5 while the die core ring and outer pressure sleeve 22 move upwardly and the countersink is placed in compression. As further shown in the drawing, the central panel 12 is additionally clamped along with the seaming panel of the uncurled beverage shell 1.


Referring now to FIG. 9, a depiction of the inner pressure sleeve timing is provided herein, and which shows the operative steps as the pressure sleeve moves from top dead center to bottom dead center returning to top dead center. More specifically, the forming cycle begins when the die center clamps material against the panel punch. The inner pressure sleeve then clamps the material against the die core ring, while the final form is achieved through compression as identified and represented by the number 3.


Referring now to FIG. 10, a cross-sectional front elevation view of one embodiment of the present invention is provided herein, and which shows additional detail regarding the positioning of the various components with respect to the uncurled beverage shell 1, and at the conclusion of the forming process. As further shown in this drawing, the inner pressure sleeve 24 is shown providing support on an exterior surface of the end closure chuck wall and seaming panel radius 5, and retaining the end closure chuck wall securely to the die core ring 19 to prevent any relative movement therein. As compression is provided to the uncurled beverage shell countersink 7, a preferred geometric shape is obtained while retaining the geometry of the chuck wall 6 and seaming panel radius 5 in a preferred orientation.


Referring now to FIG. 11, a cross-sectional front elevation view of an inner pressure sleeve is provided herein, and which depicts the location of compression on the chuck wall of the uncurled beverage shell 1 to control the chuck wall geometry during the forming process. Furthermore, and as appreciated by one skilled in the art, the geometry of the inner pressure sleeve face will also determine the overall geometry of the chuck wall 6 and seaming panel radius 5 during the forming process.


Referring now to FIGS. 12-23, cross-sectional front elevation views are provided herein which compare the prior art forming process in the right hand portion of the drawing to shape an uncurled beverage shell, as compared to the new free forming method of the present invention shown on the left hand side. As shown in these drawings, the use of an inner pressure sleeve 24 has not previously been used in the art to provide support on the chuck wall and seaming panel radius 5 on the outer surface during the forming process, while simultaneously placing the end closure countersink in compression to allow free forming.


Referring again to FIGS. 10-23, each drawing provides a cross sectional front elevation view intended to identify a tooling assembly with the various components necessary to produce an unseamed beverage container end closure. A complete die may include a single pocket or tooling assembly as illustrated, or multiple pockets, the quantity being limited more so by material width rather than press or tonnage capabilities. The lower tooling components generally include a cut edge 17, a draw ring 18 or die core ring 19, and a panel punch 20. The upper tooling components may include a counter sink punch 21, blanking punch 16, and may include an inner pressure sleeve 24. The die generally operates but is not limited to within a press including a single slide or ram. Beginning in an open position the upper tools are affixed to a die shoe which is attached to a press slide driven by a crankshaft and connection rods tied to a slide. The metallic forming material 14, most commonly aluminum, feeds over the lower tooling, although other well known metals used in the container industry could be utilized.


Referring now to the following figures in greater detail, a brief description of the forming operation is provided herein:



FIG. 12: The upper tooling is shown traveling downward with the blanking punch 16 contacting the material 14, thus initializing a blanking action.



FIG. 13: The blank metallic material 14 is clamped between blanking punch face 31 and draw ring face 33 at, during or after blanking, with continued downward travel. The clamping force may be a result of a spring, pneumatic application or other similar methods utilized to apply a force. The material is drawn tightly over the top surface of the die core ring 34. With continued downward travel, the metallic material 14 is drawn between the inner most diameter of the blanking punch 32 and the outer most diameter of the die core ring 35. Simultaneously, the metallic material 14 is being clamped between the upper surface of the die core ring 34 and the draw ring 22. The draw ring 22 applies pressure to the metallic material 14 during the forming sequence to control material flow and prevent unwanted distortion. Again, the clamping force may be obtained within a spring, pneumatic application or other similar methods utilized to apply a force.

FIG. 14-15: With continued downward travel, the die core 21 comes in contact with the material and begins the drawing process of the metallic material 14 to begin forming the interior geometry of the beverage can end. During the downward travel, the metallic material 14 becomes clamped between the die core 21 and the panel punch 20, and the die core ring 19 and inner pressure sleeve 24.

FIG. 16: With continued downward travel, the forming sequence reaches the final downward movement, known as bottom dead center. At this stage of the sequence, the seaming panel 2 and chuckwall 6 have substantially been formed. In addition, the metallic material 14 available to form the final countersink geometry 7 and the center panel geometry 12 has been drawn to the interior diameter of the die core ring 19 between surfaces 36 and 39.

FIG. 17-18: The forming sequence is shown continuing with upward travel of the blanking punch 16, die core 21, and the panel punch 20. The sequence continues upward until the panel punch 20 returns to its original position, or also referred to as stop position free forming and compressing the final countersink geometry 7 with the inner pressure sleeve 24 continuing to clamp on the die core ring 19 up to or beyond the stop position. At this stage of the sequence, the uncurled beverage end formation is complete, however removal of the completed container beverage end must be accomplished.

FIG. 19-23: The forming sequence continues upward until the full open position is achieved. The outer pressure sleeve 22 serves to strip the now finished yet uncurled container end from the innermost diameter 32 of the blanking punch 16 and the shell is ejected by air or other similar method.


Referring again to FIGS. 12-23, a comparison of the prior art method of forming an end closure is shown on the right hand side, while the new forming technique is shown on the left. As depicted in this sequence of drawings, the new forming process provides distinct advantages, including:


a) capable of producing end closures with aggressive geometries while maintaining total control of the chuck wall and seaming panel;


b) allows the forming of difficult chuck wall and countersink geometries without metal thickness reductions;


c) allows the formation of end closure countersinks with material thickening, wherein the prior art may create thinning or coining in the metal in various locations;


d) the added control of the present invention allows tooling designs which more accurately define closure contours than previous apparatus with aggressive forms;


e) capable of producing closure with higher strength materials without the metal fatigue normally associated with tight forms and radii;


f) the greater control and latitude provided by the present invention allow higher strength end closures with lower material gauge; and


g) improved operating efficiency during manufacturing and removal of the container end closures from the forming press.


While an effort has been made to describe various alternatives to the preferred embodiment, other alternatives will readily come to mind to those skilled in the art. Therefore, it should be understood that the invention may be embodied in other specific forms without departing from the spirit or central characteristics thereof. Present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the invention is not intended to be limited to the details given herein.

Claims
  • 1. A method for forming a predetermined shape in a metallic container end closure adapted for interconnection to a neck of a container, comprising: positioning a metallic end closure blank in a forming press;providing a clamping force on at least a portion of a seaming panel between a first tool and a second tool, said at least a portion of a seaming panel being oriented in a first substantially horizontal direction;providing a clamping force on at least a portion of a central panel between a third tool and a fourth tool to substantially prevent movement of the central panel;while the clamping force is provided on the at least a portion of the central panel, supporting at least a portion of a chuck wall and an inner seaming panel radius on both an interior surface and an exterior surface to substantially prevent movement of at least a portion of the chuck wall and inner seaming panel radius, wherein said inner seaming panel radius is supported along its cross-sectional radius of curvature that begins proximate to a first point of divergence from said first substantially horizontal direction of said seaming panel;supporting a first portion of the countersink with at least one of said third tool and said fourth tool while an exterior portion of the countersink is unsupported with any tools; andproviding a compressive force on a lower portion of the countersink while retaining the chuck wall in a preferred position, wherein the end closure is formed into a predetermined shape.
  • 2. The method of claim 1, wherein the end closure countersink material retains substantially the same thickness during the forming of the end closure.
  • 3. The method of claim 1, wherein the unsupported portion of the countersink changes shape during the forming process.
  • 4. The method of claim 1, wherein said first tool comprises an outer pressure sleeve and said second tool comprises a die core ring.
  • 5. The method of claim 1, wherein the chuck wall is supported on the interior surface with a die core ring and on an exterior surface with an inner pressure sleeve.
  • 6. The method of claim 2, wherein the third tool comprises a countersink punch and said fourth tool comprises a panel punch.
  • 7. The method of claim 4, wherein the countersink is placed in compression as an inner pressure sleeve travels from a position of top dead center to bottom dead center.
  • 8. The method of claim 1, wherein the end closure chuck wall is supported on an exterior surface by a pressure sleeve.
  • 9. The method of claim 8, wherein the pressure sleeve may have a distinct geometry to define a chuck wall shape during the forming process.
  • 10. The method of claim 1, wherein providing a clamping force on a portion of the seaming panel provides compression between said first tool and said second tool.
  • 11. An apparatus for forming a preferred shape in a metallic material to create a beverage end closure adapted for interconnection to a container, comprising: a first tool in opposing relationship to a second tool which is adapted to provide a clamping force on a portion of a seaming panel of the metallic material;a third tool in opposing relationship to a fourth tool which is adapted to providing a clamping force on a central panel portion of the metallic material, said fourth tool further supporting a lower portion of an interior surface of the countersink to apply a compressive force on the countersink;a fifth tool positioned between said first tool and said third tool, which is adapted to support at least a portion of a chuck wall portion of said metallic material, without contacting an exterior surface of the countersink, wherein said fifth tool is further adapted to support a curving transition between said chuck wall and said seaming panel, wherein said curving transition begins at a location where the seaming panel begins diverging downward from a substantially horizontal plane; andproviding a reciprocating motion between at least said fifth tool and said first and second tools while a portion of a countersink in the container end closure remains unsupported on an exterior surface while supported on an interior surface, wherein a preferred geometry is created in the countersink as a compressive force is applied thereto, thus substantially avoiding a reduction of material thickness of the countersink.
  • 12. The apparatus of claim 11, wherein said first tool comprises an outer pressure sleeve.
  • 13. The apparatus of claim 11, wherein said second tool comprises a die core ring.
  • 14. The apparatus of claim 11, wherein said third tool comprises a countersink punch.
  • 15. The apparatus of claim 11, wherein said fourth tool comprises a panel punch.
  • 16. The apparatus of claim 11, wherein said fifth tool comprises an inner pressure sleeve.
  • 17. The apparatus of claim 11, further comprising a blank punch and draw ring which arc adapted to retain a portion of metallic material during manufacturing and which are positioned adjacent to the first and second tools.
  • 18. A method for forming a metallic end closure adapted for interconnection to a neck of a container, comprising: a first clamping means for holding a first portion of a metallic material;a second clamping means for holding a second portion of the metallic material and comprising a tool with a geometric profile adapted to support a lower interior surface of the metallic material, said second portion of the metallic material positioned interior to said first portion;an inner pressure sleeve having an upper end and a lower end, said lower end positioned between said first clamping means and said second clamping means, and comprising an engagement surface having at least one radius of curvature inwardly directed toward said metallic material and in operable engagement with said metallic material and said lower end positioned above the metallic material held by said second clamping means, wherein a void is located between said first clamping means, said second clamping means and said pressure sleeve, and wherein said metallic material that is in operable engagement with said engagement surface of said inner pressure sleeve comprises a radius that substantially begins at a point where said metallic material diverges downward from a substantially horizontal plane;wherein at least a portion of said first clamping means and said second clamping means travels with respect to said pressure sleeve, wherein a preferred metal geometry is formed in compression within said void while a portion of said metallic material is retained between said pressure sleeve and said first clamping means.
  • 19. The method of claim 18, wherein said first clamping means comprises an outer pressure sleeve in opposing relationship to a die core ring.
  • 20. The method of claim 18, wherein said second clamping means comprises a countersink punch positioned opposite to a panel punch.
  • 21. The method of claim 18, wherein said preferred metal geometry in said void comprises a countersink in the metallic end closure.
  • 22. The method of claim 19, further comprising a blank punch and draw ring positioned adjacent said outer pressure sleeve and die core ring, respectively which are adapted to clamp a portion of said metallic material.
  • 23. The method of claim 1, further comprising supporting at least a portion of a seaming panel radius on both an interior surface and an exterior surface in addition to supporting the inner seaming panel radius.
  • 24. The method of claim 23, wherein the at least a portion of the seaming panel radius and the inner seaming panel radius are supported by a common tool.
  • 25. The method of claim 24, wherein the common tool comprises an inner pressure sleeve.
  • 26. The apparatus of claim 11, wherein said curving transition comprises a portion of at least one of a seaming panel radius and an inner seaming panel radius.
Parent Case Info

This application claims the benefit of U.S. Provisional Patent Application Ser. No. 60/592,784, filed Jul. 29, 2004, which is incorporated by reference in its entirety herein.

US Referenced Citations (164)
Number Name Date Kind
91754 Lawernce Jun 1869 A
163747 Cummings May 1875 A
706296 Bradley Aug 1902 A
766604 Dilg Aug 1904 A
801683 Penfold Oct 1905 A
818438 Heindorf Apr 1906 A
868916 Dieckmann Oct 1907 A
1045055 Mittinger, Jr. Nov 1912 A
2318603 Erb May 1943 A
D141415 Wargel et al. May 1945 S
2759628 Sokoloff Aug 1956 A
2894844 Shakman Jul 1959 A
3023927 Ehman Mar 1962 A
3105765 Creegan Oct 1963 A
3176872 Zundel Apr 1965 A
3208627 Lipske Sep 1965 A
3251515 Henchert et al. May 1966 A
3268105 Geiger Aug 1966 A
D206500 Nissen et al. Dec 1966 S
3397811 Lipske Aug 1968 A
3417898 Bozek et al. Dec 1968 A
3480175 Khoury Nov 1969 A
3564895 Pfanner et al. Feb 1971 A
3650387 Hornsby et al. Mar 1972 A
3734338 Schubert May 1973 A
3744667 Fraze et al. Jul 1973 A
D229396 Zundel Nov 1973 S
3774801 Gedde Nov 1973 A
3814279 Rayzal Jun 1974 A
3836038 Cudzik Sep 1974 A
3843014 Cospen et al. Oct 1974 A
3874553 Schultz et al. Apr 1975 A
3904069 Toukmanian Sep 1975 A
3967752 Cudzik Jul 1976 A
3982657 Keller et al. Sep 1976 A
3983827 Meadors Oct 1976 A
4015744 Brown Apr 1977 A
4024981 Brown May 1977 A
4030631 Brown Jun 1977 A
4031837 Jordan Jun 1977 A
4037550 Zofko Jul 1977 A
4043168 Mazurek Aug 1977 A
4093102 Kraska Jun 1978 A
4109599 Schultz Aug 1978 A
4127212 Waterbury Nov 1978 A
4148410 Brown Apr 1979 A
4150765 Mazurek Apr 1979 A
4210257 Radtke Jul 1980 A
4213324 Kelley et al. Jul 1980 A
4215795 Elser Aug 1980 A
4217843 Kraska Aug 1980 A
4271778 Le Bret Jun 1981 A
4276993 Hasegawa Jul 1981 A
4286728 Fraze et al. Sep 1981 A
4341321 Gombas Jul 1982 A
4365499 Hirota et al. Dec 1982 A
4387827 Ruemer, Jr. Jun 1983 A
4402419 MacPherson Sep 1983 A
4420283 Post Dec 1983 A
4434641 Nguyen Mar 1984 A
4448322 Kraska May 1984 A
4467933 Wilkinson et al. Aug 1984 A
D279265 Turner et al. Jun 1985 S
4530631 Kaminski et al. Jul 1985 A
D281581 MacEwen Dec 1985 S
4559801 Smith et al. Dec 1985 A
4571978 Taube et al. Feb 1986 A
4578007 Diekhoff Mar 1986 A
4606472 Taube et al. Aug 1986 A
D285661 Brownbill Sep 1986 S
4641761 Smith et al. Feb 1987 A
4674649 Pavely Jun 1987 A
4681238 Sanchez Jul 1987 A
4685582 Pulciani et al. Aug 1987 A
4704887 Bachmann et al. Nov 1987 A
4713958 Bulso, Jr. et al. Dec 1987 A
4715208 Bulso, Jr. et al. Dec 1987 A
4716755 Bulso et al. Jan 1988 A
4722215 Taube et al. Feb 1988 A
4735863 Bachmann et al. Apr 1988 A
4790705 Wilkinson et al. Dec 1988 A
4808052 Bulso, Jr. et al. Feb 1989 A
4809861 Wilkinson Mar 1989 A
D300607 Ball Apr 1989 S
D300608 Taylor et al. Apr 1989 S
4823973 Jewitt et al. Apr 1989 A
4832236 Greaves May 1989 A
4865506 Kaminski Sep 1989 A
D304302 Dalli et al. Oct 1989 S
4890759 Scanga et al. Jan 1990 A
4893725 Ball et al. Jan 1990 A
4895012 Cook et al. Jan 1990 A
4919294 Kawamoto Apr 1990 A
RE33217 Nguyen May 1990 E
4930658 McEldowney Jun 1990 A
4934168 Osmanski et al. Jun 1990 A
4955223 Stodd et al. Sep 1990 A
4967538 Leftault, Jr. et al. Nov 1990 A
4991735 Biondich Feb 1991 A
4994009 McEldowney Feb 1991 A
5027580 Hymes et al. Jul 1991 A
5042284 Stodd et al. Aug 1991 A
5046637 Kysh Sep 1991 A
5064087 Koch Nov 1991 A
5066184 Taura et al. Nov 1991 A
5129541 Voigt et al. Jul 1992 A
5143504 Braakman Sep 1992 A
5145086 Krause Sep 1992 A
5149238 McEldowney et al. Sep 1992 A
D337521 McNulty Jul 1993 S
5289938 Sanchez Mar 1994 A
D347172 Heynan et al. May 1994 S
5309749 Stodd May 1994 A
5320469 Katou et al. Jun 1994 A
5356256 Turner et al. Oct 1994 A
D352898 Vacher Nov 1994 S
5381683 Cowling Jan 1995 A
D356498 Strawser Mar 1995 S
5494184 Noguchi et al. Feb 1996 A
5502995 Stodd Apr 1996 A
5527143 Turner et al. Jun 1996 A
5582319 Heyes et al. Dec 1996 A
5590807 Forrest et al. Jan 1997 A
5598734 Fortest et al. Feb 1997 A
5634366 Stodd Jun 1997 A
5636761 Diamond et al. Jun 1997 A
5653355 Tominaga et al. Aug 1997 A
5685189 Nguyen et al. Nov 1997 A
5829623 Otsuka et al. Nov 1998 A
5857374 Stodd Jan 1999 A
D406236 Brifcani et al. Mar 1999 S
5911551 Moran Jun 1999 A
5950858 Sergeant Sep 1999 A
5969605 McIntyre et al. Oct 1999 A
6065634 Brifcani et al. May 2000 A
6089072 Fields Jul 2000 A
6102243 Fields et al. Aug 2000 A
6126034 Borden et al. Oct 2000 A
6131761 Cheng et al. Oct 2000 A
D452155 Stodd Dec 2001 S
6419110 Stodd Jul 2002 B1
6460723 Nguyen et al. Oct 2002 B2
6499622 Neiner Dec 2002 B1
6516968 Stodd Feb 2003 B2
6526799 Ferraro et al. Mar 2003 B2
6561004 Neiner et al. May 2003 B1
6658911 McClung Dec 2003 B2
6702142 Neiner Mar 2004 B2
6748789 Turner et al. Jun 2004 B2
6848875 Brifcani et al. Feb 2005 B2
6877941 Brifcani et al. Apr 2005 B2
6935826 Brifcani et al. Aug 2005 B2
6968724 Hubball Nov 2005 B2
7100789 Nguyen et al. Sep 2006 B2
20030198538 Brifcani et al. Oct 2003 A1
20040026433 Brifcani et al. Feb 2004 A1
20040026434 Brifcani et al. Feb 2004 A1
20040140312 Neiner Jul 2004 A1
20040238546 Watson et al. Dec 2004 A1
20050006395 Reed et al. Jan 2005 A1
20050115976 Watson et al. Jun 2005 A1
20050247717 Brifcani et al. Nov 2005 A1
20050252922 Reed et al. Nov 2005 A1
20060010957 Hubball Jan 2006 A1
Foreign Referenced Citations (52)
Number Date Country
327383 Mar 1958 CH
734942 May 1943 DE
G 92 11 788 Feb 1993 DE
0139282 May 1985 EP
0340955 Nov 1989 EP
153115 May 1990 EP
0828663 Mar 1998 EP
828663 Dec 1999 EP
1361164 Nov 2003 EP
2196891 May 1988 GB
2218024 Nov 1989 GB
2315478 Nov 1996 GB
9834743 Aug 1998 GB
49-096887 Sep 1974 JP
50-144580 Nov 1975 JP
54-074184 Jun 1979 JP
55-122945 Feb 1980 JP
S57-117323 Jan 1981 JP
56-053835 May 1981 JP
56-053836 May 1981 JP
57-044435 Mar 1982 JP
57-094436 Jun 1982 JP
58-035028 Mar 1983 JP
58-035029 Mar 1983 JP
59-144535 Aug 1984 JP
61-023533 Feb 1986 JP
63-125152 May 1988 JP
1167050 Jun 1989 JP
01-170538 Jul 1989 JP
01-289526 Nov 1989 JP
02-092426 Apr 1990 JP
2192837 Jul 1990 JP
02-131931 Nov 1990 JP
03-032835 Feb 1991 JP
3275443 Dec 1991 JP
04-033733 Feb 1992 JP
532255 Feb 1993 JP
H5-112357 May 1993 JP
5 185170 Jul 1993 JP
6127547 May 1994 JP
07-171645 Jul 1995 JP
08-168837 Jul 1996 JP
08-192840 Jul 1996 JP
2000-109068 Apr 2000 JP
8910216 Nov 1989 WO
9317864 Sep 1993 WO
9637414 Nov 1996 WO
0012243 Mar 2000 WO
WO 0141948 Jun 2001 WO
WO 0243895 Jun 2002 WO
WO 03059764 Jul 2003 WO
05032953 Apr 2005 WO
Related Publications (1)
Number Date Country
20060042344 A1 Mar 2006 US
Provisional Applications (1)
Number Date Country
60592784 Jul 2004 US