Printing unit having an idle throw-off configuration and a blanket changing throw-off configuration and corresponding printing press
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B41F-013/24
B41F-005/04
B41F-007/02
출원번호
UP-0645057
(2006-12-22)
등록번호
US-7841275
(2011-01-31)
우선권정보
FR-05 13381(2005-12-27)
발명자
/ 주소
Menu, Patrick
Recolet, Francois-Marcel-Adrien
출원인 / 주소
GOSS International Montataire SA
대리인 / 주소
Davidson, Davidson & Kappel, LLC
인용정보
피인용 횟수 :
0인용 특허 :
15
초록▼
A printing for printing a web of paper is provided. The printing unit includes a frame and at least an upper printing group and a lower printing group. The printing unit has at least a throw-on configuration, an idle throw-off configuration and a blanket-changing throw-off configuration. In the blan
A printing for printing a web of paper is provided. The printing unit includes a frame and at least an upper printing group and a lower printing group. The printing unit has at least a throw-on configuration, an idle throw-off configuration and a blanket-changing throw-off configuration. In the blanket-changing throw-off configuration, the blanket cylinder of the upper printing group has been moved upwards relative to the position which it occupies in the throw-on configuration and in which the blanket cylinder of the lower printing group has been moved downwards relative to the position which it occupies in the throw-on configuration, so that an adequate space is provided between the blanket cylinders to allow a web of paper printed by another printing unit to pass between them.
대표청구항▼
What is claimed is: 1. A printing unit for printing a web of paper comprising: a frame; an upper printing group and a lower printing group, the upper printing group including an upper blanket cylinder and upper plate cylinder, the lower printing group including a lower blanket cylinder and a lower
What is claimed is: 1. A printing unit for printing a web of paper comprising: a frame; an upper printing group and a lower printing group, the upper printing group including an upper blanket cylinder and upper plate cylinder, the lower printing group including a lower blanket cylinder and a lower plate cylinder; a cylinder support and movement mechanism moving the printing unit into at least one throw-on configuration, an idle throw-off configuration, a blanket-changing throw-off configuration and a plate-changing throw-off configuration, and a controller for controlling the movement of the cylinder support and movement mechanism to move the upper and lower blanket cylinders and the upper and lower plate cylinders into the at least one throw-on configuration wherein the upper blanket cylinder is pressed against the lower blanket cylinder and the upper and lower blanket cylinders are pressed against the upper and lower plate cylinders respectively, the idle throw-off configuration wherein the upper blanket cylinder is spaced apart from the lower blanket cylinder, and the upper and lower blanket cylinders are spaced apart from the upper and lower plate cylinders respectively, so a web of paper printed by another printing unit passes through the print unit in a space between the upper and lower blanket cylinder without contacting any cylinder in the print unit, the blanket-changing throw-off configuration wherein the upper blanket cylinder is spaced apart from the lower blanket cylinder and the upper and lower blanket cylinders are spaced apart from the upper and lower plate cylinders respectively, the blanket-changing throw-off configuration being different from the idle throw-off configuration, and the plate-changing throw-off configuration wherein the upper blanket cylinder is spaced apart from the lower blanket cylinder, the upper and lower blanket cylinders are pressed against the upper and lower plate cylinders respectively, and a web of paper printed by another printing unit passes through a space between the upper and lower blanket cylinders, wherein in the blanket changing configuration, the upper blanket cylinder is moved upwards with respect to a position the upper blanket cylinder occupied in the at least one throw-on configuration and the lower blanket cylinder is moved downwards with respect to a position the lower blanket cylinder occupied in the at least one throw-on configuration, so a web of paper printed by another printing unit passes through the print unit in a space between the upper and lower blanket cylinders without contacting any cylinder in the print unit. 2. The printing unit as recited in claim 1 wherein in the idle throw-off configuration a width of a space between the upper or lower blanket cylinder and the upper or lower plate cylinder respectively is greater than the width of the space when the printing unit is in the blanket-changing throw-off configuration. 3. The printing unit as recited in claim 1 wherein in the idle throw-off configuration the support and movement mechanism allows movement of the upper or lower blanket cylinder or the upper or lower plate cylinder so a width of a space between the upper or lower blanket cylinder and the plate cylinder respectively is greater than the width of the space when the printing unit is in the blanket-changing throw-off configuration. 4. The printing unit as recited in claim 1 wherein the support and movement mechanism includes receiving arms of the cylinders, the receiving arms articulated to the frame and pivotable about axes parallel with the upper and lower plate cylinders and upper and lower blanket cylinders, the receiving arms supporting ends of the upper and lower plate cylinders and upper and lower blanket cylinders. 5. The printing unit as recited in claim 4 wherein the support and movement mechanism includes connections between the receiving arms that receive the upper or lower blanket cylinder and upper or lower plate respectively. 6. The printing unit as recited in claim 5 wherein the connections permit movement between the connected receiving arms. 7. The printing unit as recited in claim 5 further comprising an activation device for the support and movement mechanism, the activation system including at least one jack connecting the receiving arms of the upper and lower plate cylinders at a same side of the printing unit, the jack having at least an extended configuration and a retracted configuration. 8. The printing unit as recited in claim 7 wherein the activation device includes an element for moving apart the receiving arms of the upper and lower blanket cylinders, the element being moved between a moved-apart position and a mutually close position of the receiving arms of the upper and lower blanket cylinders. 9. The printing unit as recited in claim 7 wherein, in the throw-on configuration, the jack is in a retracted configuration and an element for movement apart is in a close position, in the idle throw-off configuration, the jack is in an extended configuration and the element for movement apart is in a close position, and, in the blanket-changing throw-off configuration, the jack is in an extended configuration and the element for movement apart is in a moved-apart position. 10. The printing unit as recited in claim 1 wherein, in the plate-changing configuration, a jack is in an intermediate configuration between an extended and retracted configuration and an element for movement apart is in a moved-apart position. 11. The printing unit as recited in claim 7 wherein the activation device is adapted so movement of the lower printing group is carried out under an effect of the weight of the lower printing group and a movement of the upper printing group is carried out under an action of a jack. 12. The printing unit as recited in claim 11 wherein the movement of the lower printing group is carried out before the movement of the upper printing group when moving from the at least one throw-on configuration to the idle throw-off configuration. 13. The printing unit as recited in claim 11 wherein the jack is a pneumatic jack supplied with compressed air by a valve having a first, second and third position, the first position being the retracted configuration of the jack, the second position being a resilient centering, the third position being the extended configuration of the jack, and the movement from the at least one throw-on configuration to the idle throw-off configuration including moving the valve from the first position to the second position and then to the third position. 14. A printing press comprising at least one printing unit as recited in claim 1. 15. A printing unit for printing a web of paper comprising: a frame; an upper printing group and a lower printing group, the upper printing group including an upper blanket cylinder and upper plate cylinder, the lower printing group including a lower blanket cylinder and a lower plate cylinder; a throw-off actuator moving the printing into at least one throw-on configuration, an idle throw-off configuration, a blanket-changing throw-off configuration and a plate-changing throw-off configuration, and a controller for controlling the movement of the throw-off actuator to move the upper and lower blanket cylinder and the upper and lower plate cylinder into the at least one throw-on configuration wherein the upper blanket cylinder is pressed against the lower blanket cylinder and the upper and lower blanket cylinders are pressed against the upper and lower plate cylinders respectively, the idle throw-off configuration wherein the upper blanket cylinder is spaced apart from the lower blanket cylinder, and the upper and lower blanket cylinders are spaced apart from the upper and lower plate cylinders respectively, so a web of paper printed by another printing unit passes through the print unit in a space between the upper and lower blanket cylinder without contacting any cylinder in the print unit, the blanket-changing throw-off configuration wherein the upper blanket cylinder is spaced apart from the lower blanket cylinder and the upper and lower blanket cylinders are spaced apart from the upper and lower plate cylinders respectively, the blanket-changing throw-off configuration being different from the idle throw-off configuration, and the plate-changing throw-off configuration wherein the upper blanket cylinder is spaced apart from the lower blanket cylinder, the upper and lower blanket cylinders are pressed against the upper and lower plate cylinders respectively, and a web of paper printed by another printing unit passes through a space between the upper and lower blanket cylinders, wherein in the blanket changing configuration, the upper blanket cylinder is moved upwards with respect to a position the upper blanket cylinder occupied in the at least one throw-on configuration and the lower blanket cylinder is moved downwards with respect to a position the lower blanket cylinder occupied in the at least one throw-on configuration, so a web of paper printed by another printing unit passes through the print unit in a space between the upper and lower blanket cylinders without contacting any cylinder in the print unit. 16. A printing press comprising: an unwinding device for unwinding a web; at least one print unit downstream of the unwinding device, the at least one print unit including: an upper printing group having an upper blanket cylinder and an upper plate cylinder; a lower printing group having a lower blanket cylinder and a lower plate cylinder; and a throw-off device moving the printing unit into at least one throw-on configuration, an idle throw-off configuration and a blanket-changing throw-off configuration, and a plate-changing throw-off configuration, the blanket-changing throw-off configuration being different from the idle throw-off configuration; and a folding device downstream of the at least one print unit; a controller for controlling the movement of the throw-off device to move the upper blanket and plate cylinders and the lower blanket and plate cylinders into the at least one throw-on configuration, wherein the upper blanket cylinder is pressed against the lower blanket cylinder and the upper and lower blanket cylinders are pressed against the upper and lower plate cylinders respectively, the idle throw-off configuration wherein the upper blanket cylinder is spaced apart from the lower blanket cylinder, and the upper and lower blanket cylinders are spaced apart from the upper and lower plate cylinders respectively, so a web of paper taut between an unwinding device placed upstream of the printing unit and the folding device placed downstream of the printing unit which is printed by another printing unit downstream of the unwinding device and upstream of the printing unit passes through the print unit in a space between the upper and lower blanket cylinder without contacting any cylinder in the print unit, the blanket-changing throw-off configuration wherein the upper blanket cylinder is spaced apart from the lower blanket cylinder and the upper and lower blanket cylinders are spaced apart from the upper and lower plate cylinders respectively, the blanket-changing throw-off configuration being different from the idle throw-off configuration, and the plate-changing throw-off configuration wherein the upper blanket cylinder is spaced apart from the lower blanket cylinder, the upper and lower blanket cylinders are pressed against the upper and lower plate cylinders respectively, and a web of paper printed by another printing unit passes through a space between the upper and lower blanket cylinders, wherein the web of paper passing through the at least one printing unit in a space between the upper and lower blanket cylinders without contacting any cylinder in the print unit when the print unit is in the idle throw-off configuration and the blanket-changing throw-off configuration. 17. The printing press as recited in claim 16 further comprising a second print unit upstream of the at least one print unit, the second print unit printing on the web. 18. The printing press as recited in claim 16 wherein the web is taut between the unwinding device and the folding device.
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이 특허에 인용된 특허 (15)
Niemiro, Thaddius A.; Orzechowski, Thomas W.; Kulesza, Radoslaw, Bearing support system for a printing press having cantilevered cylinders.
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