Apparatus and method for induction sealing of conveyed workpieces
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H05B-006/02
B29C-065/02
B65B-007/28
B65B-051/22
B29C-065/46
B29C-065/78
B29C-065/00
출원번호
US-0284056
(2011-10-28)
등록번호
US-10131455
(2018-11-20)
발명자
/ 주소
Morin, Jeremy
Price, Trevor
출원인 / 주소
SONOCO DEVELOPMENT, INC.
대리인 / 주소
Neslon Mullins Riley and Scarborough LLP
인용정보
피인용 횟수 :
0인용 특허 :
82
초록▼
Apparatus and method for induction sealing workpieces, in which a series of workpieces are conveyed along a path extending in a conveyance direction, and each workpiece is exposed to a first electromagnetic field generated by a first induction head and to a second electromagnetic field generated by
Apparatus and method for induction sealing workpieces, in which a series of workpieces are conveyed along a path extending in a conveyance direction, and each workpiece is exposed to a first electromagnetic field generated by a first induction head and to a second electromagnetic field generated by a second induction head, each of the first and second electromagnetic fields inducing eddy currents through the entirety of each workpiece. Respective magnetic axes of the first and second induction heads are non-parallel to each other such that each workpiece is exposed to a plurality of differently oriented electromagnetic fields as the workpiece is conveyed along the path.
대표청구항▼
1. A multiple-head induction sealer for inductively sealing each of a series of workpieces being conveyed along a conveyance direction and adjacent to the sealer, the sealer comprising: (a) a first induction head and at least one additional, second induction head, arranged along the conveyance direc
1. A multiple-head induction sealer for inductively sealing each of a series of workpieces being conveyed along a conveyance direction and adjacent to the sealer, the sealer comprising: (a) a first induction head and at least one additional, second induction head, arranged along the conveyance direction;(b) the first induction head comprising a first coil and a first core and defining a first magnetic axis, the second induction head comprising a second coil and a second core and defining a second magnetic axis;(c) each of the first and second induction heads being configured and arranged to induce eddy currents through the entirety of each workpiece; and(d) the first magnetic axis has a non-zero first angle in relation to the conveyance direction and the second magnetic axis has a non-zero second angle in relation to the conveyance direction, wherein the first angle and the second angle are different, such that each workpiece is exposed to a plurality of differently oriented electromagnetic fields as the workpiece is conveyed along the conveyance direction. 2. The multiple-head induction sealer of claim 1, wherein the first and second magnetic axes are substantially perpendicular to each other. 3. The multiple-head induction sealer of claim 2, wherein the first magnetic axis is oriented substantially parallel to the conveyance direction and the second magnetic axis is oriented substantially perpendicular to the conveyance direction. 4. The multiple-head induction sealer of claim 2, wherein the first and second magnetic axes are substantially coplanar with each other. 5. The multiple-head induction sealer of claim 1, wherein an included angle between the first and second magnetic axes ranges from about 30° to about 90°. 6. The multiple-head induction sealer of claim 1, further comprising a cooling device located downstream of the induction heads with respect to the conveyance direction, the cooling device being operable to cool the workpieces after induction sealing. 7. The multiple-head induction sealer of claim 6, wherein the cooling device comprises a water spray device. 8. The multiple-head induction sealer of claim 6, wherein the cooling device comprises an air cooling device. 9. The multiple-head induction sealer of claim 6, wherein the cooling device comprises a water bath. 10. The multiple-head induction sealer of claim 6, wherein the workpieces comprise containers each comprising a container body and a metal end engaged with one end of the container body, and at least one of the metal end and the container body of each workpiece has a heat-sealable material, and further comprising: a conveyor atop which the containers are conveyed along the conveyance direction, with the metal ends engaged with upper ends of the container bodies, beneath the first and second induction heads such that the first and second electromagnetic fields generate eddy currents in the metal ends so as to heat the heat-sealable material and seal the metal ends to the container bodies;an endless pressure belt spaced above and parallel to the conveyor and traveling at a speed matching that of the conveyor, the pressure belt applying pressure on the metal ends in a direction toward the conveyor to prevent the containers from growing in height; anda cooling device located downstream of the induction heads with respect to the conveyance direction, the cooling device being operable to cool the workpieces after induction sealing and while the pressure belt is applying pressure on the metal ends. 11. A method for induction sealing, comprising the steps of: conveying a series of workpieces along a path extending in a conveyance direction; andexposing each workpiece to a first electromagnetic field generated by a first induction head and to a second electromagnetic field generated by a second induction head, each of the first and second electromagnetic fields inducing eddy currents through the entirety of each workpiece;wherein the first magnetic axis has a non-zero first angle in relation to the conveyance direction and the second magnetic axis has a non-zero second angle in relation to the conveyance direction, and wherein the first angle and the second angle are different, such that each workpiece is exposed to a plurality of differently oriented electromagnetic fields as the workpiece is conveyed along the conveyance direction. 12. The method of claim 11, wherein the magnetic axes of the first and second induction heads are substantially perpendicular to each other. 13. The method of claim 11, wherein the magnetic axis of one of the first and second induction heads is oriented substantially parallel to the conveyance direction and the magnetic axis of the other of the first and second induction heads is oriented substantially perpendicular to the conveyance direction. 14. The method of claim 11, wherein the magnetic axes of the first and second induction heads are substantially coplanar with each other. 15. The method of claim 11, wherein an included angle between the magnetic axes of the first and second induction heads ranges from about 30° to about 90°. 16. The method of claim 11, further comprising the step of cooling the workpieces at a location downstream of the induction heads with respect to the conveyance direction. 17. The method of claim 11, wherein the workpieces comprise containers each comprising a container body and a metal end engaged with one end of the container body, and at least one of the metal end and the container body of each workpiece has a heat-sealable material, wherein the first and second electromagnetic fields generate eddy currents in the metal ends so as to heat the heat-sealable material and seal the metal ends to the container bodies. 18. The method of claim 17, wherein the containers are conveyed atop a conveyor, with the metal ends engaged with upper ends of the container bodies, beneath the first and second induction heads. 19. The method of claim 18, further comprising the step of applying pressure on the metal ends against the container bodies as the first and second electromagnetic fields are inducing eddy currents in the metal ends. 20. The method of claim 19, wherein the step of applying pressure comprises engaging the metal ends with an endless belt spaced above and parallel to the conveyor and traveling at a speed matching that of the conveyor, the belt applying pressure on the metal ends in a direction toward the conveyor. 21. The method of claim 20, further comprising the step of cooling the metal ends at a location downstream of the induction heads with respect to the conveyance direction. 22. The method of claim 21, wherein the cooling step occurs while the belt is still applying pressure on the metal ends. 23. The multiple-head induction sealer of claim 1, wherein the first and second magnetic axes lie in different planes. 24. The multiple-head induction sealer of claim 10, wherein the endless pressure belt comprises an endless belt looped about a pair of spaced parallel rolls and wherein the first induction head and second induction head are disposed within the loop of the endless pressure belt. 25. The multiple-head induction sealer of claim 10, wherein the conveyor comprises an endless belt looped about a pair of spaced parallel rolls and wherein the first induction head and second induction head are disposed within the loop of the endless belt conveyor.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (82)
Pfaffmann George D. (Farmington Hills MI) Balzer Norbert R. (Warren MI) Kubis Charles S. (Palso Heights IL) Walter John (Evergreen Park IL) Currie John P. (Boaz AL) Adams Graham R. (Boaz AL), Apparatus and method for sealing a lid onto a container.
Pfaffmann George D. (Farmington Hills MI) Kubis Charles S. (Palso Heights IL) Currie John P. (Boaz AL) Balzer Norbert R. (Warren MI) Walter John (Evergreen Park IL) Adams Graham R. (Boaz AL), Apparatus and method for sealing a lid onto a container.
Blomqvist Peter (Lund SEX) Andreasson Ingmar (Eslv SEX) Rabe Magnus (Lund SEX) Balla Gyula (MalmSEX) Cedell Tord (Lund SEX), Apparatus for sealing by surface fusion of mutually facing surfaces of thermoplastic materials or coatings, and the use.
Sluka David L. ; Iravani Hassan ; Sprenger ; deceased Robert A., Can coating and curing system having focused induction heater using thin lamination cores.
Santamaria, Alejandro J.; Mathabel, Richard R.; Boysel, Darl G., Can end, tooling for manufacture of the can end and seaming chuck adapted to affix a converted can end to a can body.
Farrell Christopher J. (Arlington Heights IL) Hlobil Thomas (Fox River Grove IL) Nahill George F. (Crystal Lake IL), Container and seam ring for container.
Bunel Grard (LeHavre FRX) Lvy Jean-Paul (Sarrebourg FRX) Martinez Christian (Harfleur FRX), Container body of the composite type and container comprising said body.
Umlah Anthony E. (Landenberg PA) Titter ; Sr. Paul E. (Media PA) Keedy Vincent W. (New Castle DE) Kinard Richard D. (Wilmington DE) Atkins Frank J. (Aston PA), Functional and economical plastic can.
Rea, Keith R.; Braddock, Charles M.; Boatwright, Floyd; Morrow, J. Mark; Lowry, James A., Method for induction sealing a plastic part to a composite container.
Johnson Charles Louis (Cincinnati OH) Stuard Charles Donald (Cincinnati OH), Method of induction heat sealing an asymmetrical-shaped closure to a tubular body.
McHenry Robert J. ; Pfutzenreuter ; III Henry ; Tung Thomas T. ; Vella ; Jr. John, Methods and apparatus for injection molding and injection blow molding multi-layer articles, and the articles made thereby.
Franek Josef T. (Chorleywood GBX) Porucznik Paul (Kennington GBX) Serby Peter H. (Newbury GBX) Tod Christopher J. N. (Steyning GBX), Methods of making containers.
Vogel ; Jr. William M. (Mendham NJ) Weingardt Rolf E. (Scarsdale NY) O\Guin Waco J. (Lakeland GA) Littenberg Joseph S. (Springfield NJ), Plastic container and sealing ring assembly therefor.
Scanga Theodore P. (Lower Burrell PA) Kiley Matthew P. (Tarentum PA) Metz Robert J. (Pittsburgh PA) Schultz Fred R. (Lower Burrell PA), Retortable container with easily-openable lid.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.