Container, and selectively formed shell, and tooling and associated method for providing same
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B21D-037/10
B21D-022/24
B21D-051/38
출원번호
US-0722187
(2015-05-27)
등록번호
US-9975164
(2018-05-22)
발명자
/ 주소
Carstens, Aaron E.
McClung, James A.
Ripple, Paul L.
Butcher, Gregory H.
McCarty, Patrick K.
출원인 / 주소
Stolle Machinery Company, LLC
대리인 / 주소
Eckert Seamans Cherin & Mellott, LLC
인용정보
피인용 횟수 :
0인용 특허 :
34
초록▼
A shell, a container employing the shell, and tooling and associated methods for forming the shell are provided. The shell includes a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardl
A shell, a container employing the shell, and tooling and associated methods for forming the shell are provided. The shell includes a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall. The material of at least one predetermined portion of the shell is selectively stretched relative to at least one other portion of the shell, thereby providing a corresponding thinned portion. The tooling includes a pressure concentrating forming surface.
대표청구항▼
1. Tooling for forming a shell, the tooling comprising: an upper tool assembly including an upper pressure sleeve;the upper pressure sleeve including a lower end defining a pressure concentrating forming surface;a lower tool assembly cooperating with the upper tool assembly to form material disposed
1. Tooling for forming a shell, the tooling comprising: an upper tool assembly including an upper pressure sleeve;the upper pressure sleeve including a lower end defining a pressure concentrating forming surface;a lower tool assembly cooperating with the upper tool assembly to form material disposed therebetween to include a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall;wherein the upper tool assembly and the lower tool assembly move between a separated, first position, wherein the upper tool assembly is spaced from the lower tool assembly, and a forming position, wherein the upper tool assembly is immediately adjacent the lower tool assembly to selectively stretch the material of at least one predetermined portion of the shell relative to at least one other portion of the shell, thereby providing a corresponding thinned portion;wherein the pressure concentrating forming surface includes a reduced clamp area; andwherein the pressure concentrating forming surface includes a plurality of landings. 2. The tooling of claim 1 wherein the pressure concentrating forming surface plurality of landings includes between two and five substantially concentric landings. 3. Tooling for forming a shell, the tooling comprising: an upper tool assembly including an upper pressure sleeve;the upper pressure sleeve including a lower end defining a pressure concentrating forming surface;a lower tool assembly cooperating with the upper tool assembly to form material disposed therebetween to include a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall;wherein the upper tool assembly and the lower tool assembly move between a separated, first position, wherein the upper tool assembly is spaced from the lower tool assembly, and a forming position, wherein the upper tool assembly is immediately adjacent the lower tool assembly to selectively stretch the material of at least one predetermined portion of the shell relative to at least one other portion of the shell, thereby providing a corresponding thinned portion;wherein the pressure concentrating forming surface includes a reduced clamp area;the upper tool assembly includes an upper die shoe, a riser body, and a hybrid bias generating assembly;the riser body coupled to the die shoe, the riser body defining a pressure chamber;the upper pressure sleeve movably disposed in the riser body pressure chamber;the upper pressure sleeve movable between an extended, first position, wherein the upper pressure sleeve lower end is more spaced from the upper die shoe, and a retracted, second position, wherein the upper pressure sleeve lower end is less spaced from the upper die shoe;the hybrid bias generating assembly operatively coupled to the upper pressure sleeve;wherein the hybrid bias generating assembly controls the movement of the upper pressure sleeve as the upper tool assembly and the lower tool assembly move between the first and second positions;wherein the hybrid bias generating assembly includes a pressure generating assembly, a mechanical bias assembly, and a number of hybrid components;the pressure generating assembly is structured to pressurize the pressure chamber;the mechanical bias assembly includes a number of springs;the hybrid bias generating assembly generates a total bias force as the upper tool assembly and the lower tool assembly move between the first and second positions;wherein the pressure generating assembly generates between about 20%-30% of the total bias force; andwherein the mechanical bias assembly generates between about 70%-80% of the total bias force. 4. The tooling of claim 3 wherein: the pressure generating assembly generates about 25% of the total bias force; andthe mechanical bias assembly generates about 75% of the total bias force. 5. Tooling for forming a shell, the tooling comprising: an upper tool assembly including an upper pressure sleeve;the upper pressure sleeve including a lower end defining a pressure concentrating forming surface;a lower tool assembly cooperating with the upper tool assembly to form material disposed therebetween to include a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall;wherein the upper tool assembly and the lower tool assembly move between a separated, first position, wherein the upper tool assembly is spaced from the lower tool assembly, and a forming position, wherein the upper tool assembly is immediately adjacent the lower tool assembly to selectively stretch the material of at least one predetermined portion of the shell relative to at least one other portion of the shell, thereby providing a corresponding thinned portion;wherein the pressure concentrating forming surface includes a reduced clamp area;the upper tool assembly includes an upper die shoe, a riser body, and a hybrid bias generating assembly;the riser body coupled to the die shoe, the riser body defining a pressure chamber;the upper pressure sleeve movably disposed in the riser body pressure chamber;the upper pressure sleeve movable between an extended, first position, wherein the upper pressure sleeve lower end is more spaced from the upper die shoe, and a retracted, second position, wherein the upper pressure sleeve lower end is less spaced from the upper die shoe;the hybrid bias generating assembly operatively coupled to the upper pressure sleeve;wherein the hybrid bias generating assembly controls the movement of the upper pressure sleeve as the upper tool assembly and the lower tool assembly move between the first and second positions;wherein the hybrid bias generating assembly includes a pressure generating assembly, a mechanical bias assembly, and a number of hybrid components;the pressure generating assembly is structured to pressurize the pressure chamber;the mechanical bias assembly includes a number of springs;the hybrid bias generating assembly generates a total bias force as the upper tool assembly and the lower tool assembly move between the first and second positions;wherein the total bias force is communicated through the upper pressure sleeve to the pressure concentrating forming surface;wherein the pressure concentrating forming surface is structured to apply a clamping force to a work piece; andwherein the ratio of the total bias force to the clamping force is between about 1:20 and 1:40. 6. The tooling of claim 5 wherein the ratio of the total bias force to the clamping force is about 1:30. 7. Tooling for forming a shell, the tooling comprising: an upper tool assembly including an upper pressure sleeve;the upper pressure sleeve including a lower end defining a pressure concentrating forming surface;a lower tool assembly cooperating with the upper tool assembly to form material disposed therebetween to include a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall;wherein the upper tool assembly and the lower tool assembly move between a separated, first position, wherein the upper tool assembly is spaced from the lower tool assembly, and a forming position, wherein the upper tool assembly is immediately adjacent the lower tool assembly to selectively stretch the material of at least one predetermined portion of the shell relative to at least one other portion of the shell, thereby providing a corresponding thinned portion;wherein the pressure concentrating forming surface includes a reduced clamp area;the upper tool assembly generates a total bias force as the upper tool assembly and the lower tool assembly move between the first and second positions;wherein the total bias force is communicated through the upper pressure sleeve to the pressure concentrating forming surface;wherein the pressure concentrating forming surface is structured to apply a clamping force to a work piece; andwherein the ratio of the total bias force to the clamping force is between about 1:20 and 1:40. 8. The tooling of claim 7 wherein the ratio of the total bias force to the clamping force is between about 1:30. 9. A method for forming a shell comprising: introducing material between tooling;generating a total bias force within the tooling;clamping the material between an upper tool assembly and a lower tool assembly, wherein the ratio of the total bias force to the clamping force is between about 1:20 and 1:40;forming the material to include a center panel, a circumferential chuck wall, an annular countersink between the center panel and the circumferential chuck wall, and a curl extending radially outwardly from the chuck wall; andselectively stretching at least one predetermined portion of the shell relative to at least one other portion of the shell to provide a corresponding thinned portion of the shell. 10. The method of claim 9 wherein the clamping the material between an upper tool assembly and a lower tool assembly includes the ratio of the total bias force to the clamping force of about 1:30.
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이 특허에 인용된 특허 (34)
Elert Karl (Brookfield WI) Westphal John C. (Franklin WI), Apparatus for forming a domed bottom in a can body.
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Bulso ; Jr. Joseph D. ; Gang ; Jr. Terry L. ; Calderone Gregory A. ; Stewart Harry D. ; Simmons William J., Method and apparatus for forming a bottom-profiled cup.
Taube William L. (Murrietta CA) Roberts David A. (Wokingham GB2), Method of forming a one-piece can body having an end reinforcing radius and/or stacking bead.
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