Claims
- 1. A web guidance device for a calender which includes a roll stack having several rolls which form a plurality of nips, the device comprising:a movable web guidance device which is fixable in at least one insertion position and arranged on at least one side of the roll stack; and the web guidance device receiving a beginning of the web at one nip of the plurality of nips and guiding the beginning of the web to another nip of the plurality of nips, wherein the web guidance device guides the beginning of the web through the roll stack, and wherein the web guidance device is movable between the at least one insertion position and at least one other insertion position.
- 2. The device of claim 1, wherein the calender comprises a material web treating calender.
- 3. The device of claim 1, wherein the web guidance device is fixable in a parked position in which no nip is covered by the web guidance device.
- 4. The device of claim 1, wherein the web guidance device further comprises a guide surface arrangement.
- 5. The device of claim 4, wherein the guide surface arrangement comprises at least one moveable guide surface for guiding the web.
- 6. The device of claim 1, wherein the roll stack is inclined at an angle.
- 7. The device of claim 6, wherein the angle is in the range of approximately greater than 0 degrees and less than 90 degrees.
- 8. A web guidance device for a calender which includes a roll stack having several rolls which form a plurality of nips, the device comprising:a movable web guidance device which is fixable in at least one insertion position and arranged on at least one side of the roll stack; and a traverser coupled to the moveable web guidance device, wherein the web guidance device guides a beginning of the web through the roll stack, and wherein the web guidance device is movable between the at least one insertion position and at least one other insertion position.
- 9. The device of claim 8, wherein the web guidance device is fastened to the traverser.
- 10. A web guidance device for a calender which includes a roll stack having several rolls which form a plurality of nips, the device comprising:a movable web guidance device which is fixable in at least one insertion position and arranged on at least one side of the roll stack, wherein the web guidance device guides a beginning of the web through the roll stack, and further comprising position switches for detecting the position of the web guidance device, the position switches being connected with a drive control.
- 11. A web guidance device for a calender which includes a roll stack having several rolls which form a plurality of nips, the device comprising:a movable web guidance device which is. fixable in at least one insertion position and arranged on at least one side of the roll stack, wherein the web guidance device guides a beginning of the web through the roll stack, wherein the web guidance device further comprises a guide surface arrangement, wherein the guide surface arrangement comprises at least one moveable guide surface for guiding the web, and wherein at least one moveable guide surface comprises an evenly formed surface which runs essentially parallel to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack.
- 12. The device of claim 11, wherein the guide surface arrangement further comprises a reversing surface extending from the evenly formed surface.
- 13. The device of claim 12, wherein the reversing surface is moveable to a position. parallel to the evenly formed surface.
- 14. The device of claim 13, wherein the reversing surface is arranged on pivoted levers.
- 15. The device of claim 13, wherein the reversing surface is arranged on a sliding piece which is moveable in a direction substantially perpendicular to the stack plane.
- 16. A web guidance device for a calender which includes a roll stack having several rolls which form a plurality of nips, the device comprising:a movable web guidance device which is fixable in at least one insertion position and arranged on at least one side of the roll stack; and the web guidance device receiving a beginning of the web at one nip of the plurality of nips and guiding the beginning of the web to another nip of the plurality of nips, wherein the web guidance device guides a beginning of the web through the roll stack, wherein the web guidance device further comprises a guide surface arrangement, and wherein the guide surface arrangement further comprises at least one tongue for engaging the beginning of the web, the at least one tongue being moveable in a direction substantially perpendicular to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack.
- 17. A web guidance device for a calender which includes a roll stack having several rolls which form a plurality of nips, the device comprising:a movable web guidance device which is fixable in at least one insertion position and arranged on at least one side of the roll stack; and the web guidance device receiving a beginning of the web at one nip of the plurality of nips and guiding the beginning of the web to another nip of the plurality of nips, wherein the web guidance device guides a beginning of the web through the roll stack, and wherein the web guidance device further comprises at least one moveable gripper head for engaging the beginning of the web.
- 18. The device of claim 17, wherein the gripper head is moveable in a direction substantially perpendicular to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack.
- 19. A web guidance device for a calender which includes a roll stack having several rolls which form a plurality of nips, the device comprising:a movable web guidance device which is fixable in at least one insertion position and arranged on at least one side of the roll stack, wherein the web guidance device guides a beginning of the web through the roll stack, wherein the web guidance device further comprises at least one moveable gripper head for engaging the web beginning, and wherein the gripper head is moveable along a arcuate path relative to the stack plane.
- 20. A web guidance device for a calender which includes a roll stack having several rolls which form a plurality of nips, the device comprising:a movable web guidance device which is fixable in at least one insertion position and arranged on at least one side of the roll stack, wherein the web guidance device guides a beginning of the web through the roll stack, wherein the web guidance device further comprises at least one moveable gripper head for engaging the beginning of the web, wherein the gripper head is moveable in a direction substantially perpendicular to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack, and wherein the gripper head is moveable in a direction substantially parallel to the stack plane.
- 21. The device of claim 20, wherein the gripper head comprises one of a suction and a blower device for engaging the web beginning.
- 22. The device of claim 20, wherein the gripper head is rotatable for at least 180° around an axis running parallel to an axis of at least one roll in the roll stack.
- 23. The device of claim 22, wherein the gripper head comprises jaws which are oriented substantially parallel to an axis of at least one roll in the roll stack.
- 24. A device for threading a material web through a calender which comprises a roll stack having at least a first nip and a second nip, the device comprising:a platform which is moveable relative to the roll stack and arranged on one side of the roll stack; and a web guidance device coupled to the platform; wherein the web guidance device is adapted to redirect the direction of the material web after the web passes through the first nip, and wherein the web guidance device is movable between at least the first nip and at least the second nip.
- 25. The device of claim 24, wherein the platform comprises a traverser for carrying a operating personnel.
- 26. The device of claim 25, wherein the traverser is moveable in a direction parallel to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack.
- 27. The device of claim 24, wherein the web guidance device comprises at least one pivoting lever having a guide surface for engaging the web.
- 28. The device of claim 27, wherein the web guidance device comprises two pivoting levers each having a guide surface for engaging the web.
- 29. The device of claim 28, wherein the guide surface of each lever is curved whereby the web is guided to the second nip after reversing direction.
- 30. The device of claim 29, wherein the web guidance device further comprises a linear guide coupled to the pivoting levers, the linear guide being oriented parallel to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack.
- 31. The device of claim 30, wherein the web guidance device further comprises fluid activated cylinders for moving the pivoting levers.
- 32. The device of claim 24, wherein the web guidance device comprises at least one sliding mechanism having a guide surface for engaging the web.
- 33. The device of claim 32, wherein the web guidance device comprises at least two sliding mechanisms each having a guide surface for engaging the web.
- 34. The device of claim 33, wherein the guide surface of each sliding mechanism is curved whereby the web is guided to the second nip after reversing direction.
- 35. The device of claim 34, wherein the web guidance device further comprises a linear guide coupled to the pivoting levers, the linear guide being oriented parallel to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack.
- 36. The device of claim 34, wherein at least one sliding mechanism further comprises a tongue disposed at one end of the at least one sliding mechanism for engaging the web, the tongue being retractable into the sliding mechanism.
- 37. The device of claim 24, wherein the web guidance device comprises at least one guiding mechanism having an end for engaging the web.
- 38. The device of claim 37, wherein the guiding mechanism comprises a connecting rod which is moveable in a direction substantially perpendicular to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack.
- 39. The device of claim 24, wherein the platform travels along a path which is parallel to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack.
- 40. A device for threading a material web through a calender which comprises a roll stack having at least a first nip and a second nip, the device comprising:a platform which is moveable relative to the roll stack and arranged on one side of the roll stack; and a web guidance device coupled to the platform; wherein the web guidance device is adapted to redirect the direction of the material web after the web passes through the first nip, wherein the web guidance device comprises at least one guiding mechanism having an end for engaging the web, wherein the guiding mechanism comprises a connecting rod which is moveable in a direction substantially perpendicular to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack, and wherein the connecting rod comprises a gripper head for engaging a beginning end of the web.
- 41. The device of claim 40, wherein the gripper head comprises a pair of rotating jaws for reversing the direction of the web.
- 42. The device of claim 40, wherein the gripper head comprises one of a suction and a blower device for engaging the web beginning.
- 43. A device for threading a material web through a calender which comprises a roll stack having at least a first nip and a second nip, the device comprising:a platform which is moveable relative to the roll stack and arranged on one side of the roll stack; and a web guidance device coupled to the platform; wherein the web guidance device is adapted to redirect the direction of the material web after the web passes through the first nip, wherein the platform travels along a path which is parallel to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack, and wherein the path further comprises position switches for detecting the position of one of the platform and the web guidance device.
- 44. The device of claim 43, wherein the position switches are connected to a drive control device.
- 45. A device for threading a material web through a calender which comprises a roll stack having at least a first nip and a second nip, the device comprising:a platform which is moveable along a travel path, the travel path being parallel to a stack plane whereby the stack plane runs through a center axis of at least two rolls in the roll stack; a web guidance device coupled to the platform, the platform being arranged on one side of the roll stack; the path comprising position sensors for detecting the position of one of the platform and the web guidance device; and a mechanism disposed on the web guidance device for changing a first direction of the web exiting the first nip to a second direction entering the second nip.
- 46. A method of threading a material web through a calender which comprises a roll stack having at least a first nip and a second nip, the method comprising:feeding a web beginning through a first nip from one side of the roll stack; engaging the web beginning on the other side of the roll stack with a web guidance device; and guiding the web beginning to a second nip with the web guidance device, wherein the web guidance device is mechanized and movable between at least the first nip and at least the second nip.
- 47. The method of claim 46, wherein the web guidance device is coupled to a moving platform.
- 48. The method of claim 47, wherein the guiding further comprises reversing the direction of the web beginning.
- 49. The method of claim 46, wherein the engaging further comprises pivoting at least one lever having a web guiding surface.
- 50. The method of claim 49, wherein the engaging further comprises pivoting two levers each having a web guiding surface.
- 51. The method of claim 46, wherein the engaging further comprises moving at least one sliding mechanism substantially perpendicular to a stack plane, the stack plane running through a center axis of at least two rolls in the roll stack.
- 52. The method of claim 46, further comprising moving the web guidance device from a parked position to a first position for initially engaging the web beginning.
- 53. The method of claim 46, wherein the first and second nips are separated in the roll stack by at least one intermediate nip.
- 54. The method of claim 53, wherein the first and second nips are separated-in the roll stack by at least two intermediate nips.
- 55. The method of claim 46, wherein the first and second nips are separated in the roll stack by at least two intermediate nips.
- 56. A method of threading a material web through a calender which comprises a roll stack having at least a first nip and a second nip, the method comprising:feeding a web beginning through a first nip from one side of the roll stack; engaging the web beginning on the other side of the roll stack with a web guidance device; and guiding the web beginning to a second nip with the web guidance device, wherein the web guidance device is coupled to a moving platform, wherein the guiding further comprises reversing the direction of the web beginning, and wherein the engaging further comprises gripping the web beginning with a gripper head disposed on the end of the web guidance device.
- 57. The method of claim 56, wherein the gripping further comprises vacuum retaining the web beginning.
- 58. The method of claim 56, wherein the gripping further comprises rotating the web beginning approximately 180 degrees.
- 59. A method of threading a material web through a calender which comprises a roll stack having at least a first nip and a second nip, the method comprising:feeding a web beginning through a first nip from one side of the roll stack; engaging the web beginning on the other side of the roll stack with a web guidance device; guiding the web beginning to a second nip with the web guidance device, and detecting the position of the web guidance device with position sensors disposed along a web guidance device travel path.
- 60. A method of threading a material web through a calender which comprises a roll stack having at least a first nip and a second nip, the method comprising:moving a web guidance device from a parked position to a first position adjacent the first nip; detecting the first position with a position sensor; feeding a web beginning through a first nip from one side of the roll stack; engaging the web beginning on the other side of the roll stack with the web guidance device; changing the direction of the web beginning with the guidance device; and moving the web guidance device back to a parked position.
Priority Claims (1)
Number |
Date |
Country |
Kind |
199 04 180 |
Feb 1999 |
DE |
|
CROSS-REFERENCE TO RELATED APPLICATIONS
The present application claims priority under 35 U.S.C. §119 of German Patent Application No. 199 04 180.6, filed on Feb. 3, 1999, the disclosure of which is expressly incorporated by reference herein in its entirety.
US Referenced Citations (8)
Foreign Referenced Citations (3)
Number |
Date |
Country |
36474 |
Sep 1985 |
DE |
3738973 |
May 1989 |
DE |
232689 |
Aug 1987 |
EP |