Adjustable matte for handling sheets in a printing press and method of using same

• US 6,378,434 B1
• Filed: 03/07/2000
• Issued: 04/30/2002
• Est. Priority Date: 03/07/2000
• Status: Expired due to Fees

• Current Assignee: Baldwin Graphic Systems Incorporated (Forsyth Baldwin LLC)
• Original Assignee: Baldwin Graphic Systems Incorporated (Forsyth Baldwin LLC)
• Inventors: Gasparrini, Charles R., Ruch, Robert L., Rubin, Richard P., Marganski, Edward E.
• Primary Examiner(s): EICKHOLT, EUGENE H
• Application Number:
  US09/520,851
• Time in Patent Office: 784 Days
• Field of Search: 101/483, 101/482, 101/419, 101/420, 101/421, 101/422, 101/407, 101/232, 101/415.1, 492/4, 492/5, 492/48, 441/40, 298/87
• US Class Current: 101/483
• CPC Class Codes: B41F 21/00 Devices for conveying sheets through printing apparatus or machines through platen presses B41F1/28
• CPC Class Codes: B41F 21/10 Combinations of transfer drums and grippers
• CPC Class Codes: B41F 22/00 Means preventing smudging of machine parts or printed articles B41F23/00 takes precedence

Abstract

An apparatus for facilitating handling of sheets in a sheet-fed printing press comprising a matte that is mountable on a cylinder. The matte has at least one inflatable pocket for cushioning sheets of printable material as they are passed between two cylinders of the press. At least one valve communicates with the inflatable pocket and controls the quantity of fluid in the inflatable pocket. A number of inflatable pockets can be utilized to provide increased control over various sheet sizes. Further control may be obtained by including a number of valves to independently operate each of the inflatable pockets. Ease of installation and removal is accomplished by incorporated mounting holes along the long axis of the matte. Alternatively, the matte may be arranged on the cylinder by adhesively bonding (tape or glue) the matte to the surface of the cylinder or by arranging the matte on the cylinder with Velcro fasteners. A number of mattes may be combined to form a compound matte resulting in greater resolution and precision. Methods for making as well as using the apparatus are also disclosed.

Claims

1. An apparatus for facilitating handling of sheets in a sheet-fed printing press as they are passed between a first cylinder and a second cylinder, comprising:

a matte having at least one inflatable pocket for cushioning sheets of printed material as they are passed through the first and second cylinders wherein the matte is mounted to the first cylinder such that the matte can conform to any shape of the first cylinder.

2. The apparatus according to claim 1, further comprising at least one valve in fluid communication with the inflatable pocket for controlling a quantity of fluid therein.

3. The apparatus according to claim 2, wherein the at least one inflatable pocket includes a plurality of inflatable pockets.

4. The apparatus according to claim 3, wherein the valve selectively inflates or deflates at least one of the plurality of inflatable pockets.

5. The apparatus according to claim 4, wherein the matte comprises a plurality of layers.

6. The apparatus according to claim 5, wherein at least one of the plurality of layers is formed from a pliable material.

7. The apparatus according to claim 6, wherein the pliable material is selected from the group consisting of polyvinylchloride, plastic, rubber and non-permeable fabric.

8. The apparatus according to claim 6, the matte having a long axis and a short axis, the long axis to be aligned with the first cylinder'"'"'s length and the short axis to be aligned along the first cylinder'"'"'s circumference, wherein the at least one of the plurality of layers is sealingly engaged along the short axis at a plurality of locations spaced along the long axis.

9. The apparatus according to claim 8, wherein the plurality of locations are arranged to coincide with various sizes of the sheets of printed material.

10. The apparatus according to claim 2, wherein the at least one valve includes a plurality of independently operable valves, one for each of the plurality of inflatable pockets.

11. The apparatus according to claim 2, further comprising a fluid medium source in fluid communication with the at least one valve.

12. The apparatus according to claim 1, wherein the matte further includes at least one inflatable pocket that receives fluid medium independent of contact with the first cylinder.

13. The apparatus according to claim 1, wherein the matte has a long axis having holes for mounting the matte on the first cylinder, the long axis to be aligned along the first cylinder'"'"'s length.

14. The apparatus according to claim 13, wherein the matte is mounted to the first cylinder.

15. The apparatus according to claim 12, wherein the matte is adhesively mounted to the first cylinder.

16. The apparatus according to claim 12, wherein the matte has a long axis having Velcro hook and loop fasteners for mounting the matte on the first cylinder, the long axis to be aligned along the first cylinder'"'"'s length.

17. The apparatus according to claim 16, wherein the matte is mounted to the first cylinder.

18. An apparatus for facilitating handling of sheets in a sheet-fed printing press as they are passed between a first cylinder and a second cylinder, comprising:

inflatable cushion means for cushioning sheets of printed material as they are passed between the first and second cylinders, wherein the inflatable cushion means is mounted to the first cylinder such that the inflatable cushion means can conform to any shape of the first cylinder.

19. The apparatus according to claim 18, further comprising flow-control means in fluid communication with the cushioning means for controlling a quantity of fluid in the inflatable cushion means.

20. The apparatus according to claim 19, further comprising a fluid medium source means for providing the fluid to the flow-control means.

21. The apparatus according to claim 20, wherein the flow control means selectively controls the quantity of fluid in the inflatable cushion means.

22. An apparatus for facilitating handling of sheets in a sheet-fed printing press as the sheets are passed between a first cylinder and a second cylinder, the apparatus being mountable on the first cylinder and comprising:

at least one inflatable tube for cushioning sheets of printed material as the sheets are passed between the first and second cylinders; and

at least one valve in communication with the tube such that the valve receives a fluid medium independent of contact with the first cylinder.

23. The apparatus according to claim 22, wherein the valve is in fluid communication with the inflatable tube for controlling a quantity of fluid in the inflatable tube.

24. The apparatus according to claim 23, wherein the at least one inflatable tube includes a plurality of inflatable tubes.

25. The apparatus according to claim 24, wherein the at least one valve selectively controls the quantity of fluid in at least one of the plurality of inflatable tubes.

26. The apparatus according to claim 22, wherein the first cylinder includes an outer surface adapted to receive the at least one inflatable tube.

27. The apparatus according to claim 24, wherein the first cylinder includes an outer surface adapted to receive the plurality of inflatable tubes at a plurality of locations spaced along a long axis of the first cylinder for receiving various sheet sizes.

28. The apparatus according to claim 24, wherein the at least one valve includes a plurality of independently operable valves for selectively controlling the quantity of fluid in the plurality of inflatable tubes.

29. The apparatus according to claim 28, wherein the plurality of independently operable valves includes one valve for each of the plurality of inflatable tubes.

30. The apparatus according to claim 24, further comprising a fluid medium source in fluid communication with the at least one valve.

31. An apparatus for facilitating handling of sheets in a sheet-fed printing press as they are passed between a first cylinder and a second cylinder, the apparatus comprising:

an outer surface of the first cylinder having a plurality of grooves extending substantially along a circumference of the first cylinder, the plurality of grooves having at least a first edge and a second edge in the outer surface of the first cylinder defining outer peripheries of the plurality of grooves, the first and second edges being spaced along a long axis of the first cylinder;

a pliable membrane arranged on the first cylinder and sealingly attached to the outer surface of the first cylinder at least at the outer peripheries of the plurality of grooves, wherein a plurality of sealed cavities for receiving a quantity of fluid are formed by the plurality of grooves and by portions of the pliable membrane which sealingly enclose the plurality of grooves for cushioning sheets of printed material as they are passed between the first and second cylinders.

32. The apparatus according to claim 31, further comprising at least one valve in fluid communication with the sealed cavities for controlling the quantity of fluid in at least one of the plurality of sealed cavities to cause a deflection of at least one of the portions of the pliable membrane forming the plurality of sealed cavities.

33. The apparatus according to claim 32, wherein the at least one valve selectively adjusts a deflection of at least one of the portions of the pliable membrane forming the plurality of sealed cavities.

34. The apparatus according to claim 32, wherein the at least one valve includes a plurality of independently operable valves for selectively controlling the quantity of fluid in the plurality of sealed cavities to cause a deflection in the portions of the pliable membrane forming the plurality of sealed cavities.

35. The apparatus according to claim 34, wherein the plurality of independently operable valves includes one valve for each of the plurality of sealed cavities.

36. The apparatus according to claim 31, wherein the plurality of grooves are spaced at a plurality of locations on the outer surface of the first cylinder spaced along the long axis of the first cylinder to receive various sizes of the sheets of printed material.

37. A method of forming an apparatus for facilitating handling of sheets in a sheet-fed printing press as they are passed between a first cylinder and a second cylinder, the method comprising:

selecting a pliable material for at least one layer of a matte;

selecting a suitable material for at least a second layer of the matte;

applying a sealing means to the pliable material at least at two locations spaced along a long axis of the matte whereby at least one inflatable pocket is formed.

38. The method according to claim 37, further comprising adapting the matte to allow the at least one inflatable pocket to be in fluid communication with at least one valve.

39. The method according to claim 38, further comprising arranging the valve between the layers of the matte.

40. A method for facilitating handling of sheets in a sheet-fed printing press as they are passed between a first cylinder and a second cylinder, the first cylinder having a matte with at least one inflatable pocket arranged thereon, the method comprising:

controlling a quantity of fluid in the at least one inflatable pocket for cushioning sheets of printed material as they are passed through the first and second cylinders; and

receiving the fluid independent of contact with the first cylinder.

41. The method according to claim 40, further comprising operating a valve to control the quantity of fluid in the at least one inflatable pocket.

42. The method according to claim 40, further comprising selecting a printed sheet size.

43. The method according to claim 42, further comprising operating a valve to control a quantity of fluid in the at least one inflatable pocket to receive the printed sheet size selected.

44. An apparatus for facilitating handling of sheets in a sheet-fed printing press as they are passed between a first cylinder and a second cylinder, the apparatus being mountable on the first cylinder and comprising:

a compound matte including at least two mattes, a first matte and a second matte arranged on the first matte;

the first and second mattes having at least one inflatable pocket each for cushioning sheets of printed material as they are passed through the first and second cylinders; and

the second matte having at least one opening adapted to allow the at least one inflatable pocket of the first matte to pass therethrough when the at least one inflatable pocket of the first matte is inflated.

45. The apparatus according to claim 44, further comprising at least one valve in fluid communication with the at least one inflatable pocket of each matte for controlling a quantity of fluid therein.

46. The apparatus according to claim 45, wherein the at least one inflatable pocket of the first or second matte includes a plurality of inflatable pockets.

47. The apparatus according to claim 46, wherein the valve selectively inflates or deflates at least one of the inflatable pockets of the first or second matte.

48. The apparatus according to claim 47, further comprising a control unit for automatically controlling the quantity of fluid in the inflatable pockets of the first and second mattes.

49. The apparatus according to claim 48, wherein the control unit receives information about the printable sheet of material, processes the information and determines which inflatable pockets to inflate on the first and second mattes.

50. The apparatus according to claim 49, wherein the control unit actuates the valve to inflate the appropriate inflatable pockets on the first and second mattes according to the processed information.

51. The apparatus according to claim 50, wherein the at least one valve includes at least one independently operable valve for each of the mattes.

52. The apparatus according to claim 51, wherein the at least one independently operable valve for each of the mattes includes at least one independently operable valve for each of the inflatable pockets.

53. A method for facilitating handling of sheets in a sheet-fed printing press as they are passed between a first cylinder and a second cylinder, the first cylinder having a compound matte arranged thereon, the compound matte comprising at least two mattes, each matte having at least one inflatable pocket, the method comprising:

receiving data associated with an image to be printed; and

controlling a quantity of fluid in the inflatable pockets of the compound matte according to the data.

54. The method according to claim 53, further comprising:

receiving an electronic image file of the image to be printed;

processing the electronic image file to identify non-print areas;

controlling the quantity of fluid in the inflatable pockets of the compound matte corresponding to the non-print areas.

55. The method according to claim 54, further comprising:

operating a valve to control the quantity of fluid in the inflatable pockets of the compound matte.