WO1996030291B1 - Universal vacuum drum and mask - Google Patents
Universal vacuum drum and maskInfo
- Publication number
- WO1996030291B1 WO1996030291B1 PCT/US1996/004188 US9604188W WO9630291B1 WO 1996030291 B1 WO1996030291 B1 WO 1996030291B1 US 9604188 W US9604188 W US 9604188W WO 9630291 B1 WO9630291 B1 WO 9630291B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- mask
- holes
- drum
- vacuum drum
- substrate
- Prior art date
Links
Abstract
A vacuum drum apparatus on which a mask is mounted having a resilient surface and a plurality of holes suitable for a substrate of a given size. The vacuum drum apparatus is balanced for rotation at high speeds by attaching a counterweight to the mask. The drum is a circular cylinder perforated with an array of holes. The drum has flat surfaces on its outer surface that are used to mount the mask and the substrate on the drum. A hollow chamber within the drum is connected to a controlled pressure source for providing a vacuum. The mask may be magnetically attracted about the outer surface of the drum. Thus, the mask may be made of a flexible ferromagnetic sheet. The mask may also be staged on the drum with other mechanical type entanglements. The mask is preferably elastomeric and may include an inextensible layer.
Claims
-34-
AMENDED CLAIMS
[received by the International Bureau on 21 January 1997 (21.01.97); original claims 31-40 cancelled; new claims 79-84 added; remaining claims unchanged (11 pages)]
26. The vacuum drum apparatus of claim 23 further comprising at least two precision placed registration holes in the outer surface of said circular cylinder for aligning with two precision placed registration holes in said removable mask.
27. The vacuum drum apparatus of claim 23 wherein the outer surface of said circular cylinder is made of a magnetic material and the removable mask includes magnetized particles.
28. The vacuum drum apparatus of claim 23 further comprising a magnetic sheet having an array of holes and an adhesive layer for mounting the magnetic sheet onto the outer surface of said circular cylinder with the array of holes in said magnetic sheet in alignment with holes in the outer surface of said circular cylinder and wherein the removable mask includes magnetic particles.
29. The vacuum drum apparatus of claim 23 wherein the removable mask further includes an inextensible layer.
30. The vacuum drum apparatus of claim 23 wherein the array of holes in said removable mask is a rectangular array.
.Hr-: A mask for mounting a substrate of a given area onto a vacuum drum,—said mask comprising. a flexible f rromagne ic sheet having a plurality of holes arranged in an array covering an area no greater— han the given area of said substrate.
3-2-: The mask of claim 31 wherein said sheet includes a leading edge and at least two precision spaced alignment openings lucated between the leading edge and the array of holes .
X XX Ω SHEET (ARTICLE 19)
-35- 3-3-: The mask of claim 32 wherein said sheet further includes a trailing edge and wherein the array of holes includes a row of holes closest to the trailing edge having holes larger in size than holes in the center of said array.
3-4-: The mask of claim 31 wherein said sheet is inextensible and includes a resilient surface;
3-5-: The mask of claim 311 wherein said sheet comprises a ferromagnetic layer and an inextensible layer.
3-6-: The mask of claim 31 wherein said sheet includes an elastomeric top layer,—an inextensible middle layer and a bottom layer having ferromagnetic particles.
3-9-: The mask of claim 31 wherein the array of holes is a rectangular array.
3-8-: The mask of claim 37— urther comprising corner holes at the outer corners of said array,—said corner holes having rectangular outer edges .
3-9-: The mask of claim 31 wherein said flexible ferromagnetic sheet is magnetized.
4-Θ-: The mask of claim 31 further comprising edge holes larger—in area than any of said plurality of holes,—said edge holes being located about the outer edges of said array.
41. A mask for mounting at least one substrate of a given area onto a vacuum drum, said mask comprising: a flexible inextensible sheet having a first plurality of holes, said first plurality of holes being arranged so that when the first substrate is mounted thereon said holes lie beneath the first substrate and along and within the perimeter
of said first substrate; and a counterweight attached to said sheet so as to balance the weight distribution about the vacuum drum when the substrate and the mask are mounted thereon.
42. The mask of claim 41 wherein the counterweight is adhesively attached to said sheet.
43. The mask of claim 41 wherein the counterweight is adhesive backed lead tape.
44. The mask of claim 41 further comprising a leading edge and at least two precision spaced alignment openings located between said leading edge and said first plurality of holes.
45. The mask of claim 44 further comprising means for staging said flexible inextensible sheet on said vacuum drum.
46. The mask of claim 45 wherein the means for staging comprises a first mechanical attachment along the leading edge of said mask for attachment to a second mechanical attachment spaced along the surface of said vacuum drum.
47. The mask of claim 45 wherein the means for staging said flexible inextensible sheet is magnetic.
48. The mask as in claim 41 further comprising a second plurality of holes distinct from the first plurality of holes, said second plurality of holes being arranged so that when a second substrate is mounted thereon said second plurality of holes lie beneath the second substrate and along and within the perimeter of said second substrate.
49. The mask as in claim 48 wherein the sheet includes a
-37- leading edge and at least two precision spaced alignment openings located between said leading edge and the first and second plurality of holes.
50. A mask for mounting a substrate of a given area onto a vacuum drum, said mask comprising: a flexible inextensible sheet having a first plurality of holes arranged in an array covering an area no greater than the given area of said substrate; and a counterweight attached to said sheet so as to balance the weight distribution about the vacuum drum when the substrate and the mask are mounted thereon.
51. The mask of claim 50 wherein the counterweight is adhesively attached to said sheet.
52. The mask of claim 50 wherein the counterweight is adhesive backed lead tape.
53. The mask of claim 50 further comprising a leading edge and at least two precision spaced alignment openings located between said leading edge and said first plurality of holes.
54. The mask of claim 53 further comprising means for staging the flexible inextensible sheet on said vacuum drum.
55. The mask of claim 54 wherein the means for staging comprises a first mechanical attachment along the leading edge of said mask for attachment to a second mechanical attachment along the surface of said vacuum drum.
56. The mask of claim 54 wherein the means for staging is magnetic.
-38-
57. A vacuum drum apparatus comprising: a first end plate; a second end plate; an outer drum surface disposed between the first end plate and the second end plate, said outer drum surface including a circular cylindrical surface and a first flat surface, said cylindrical surface and said first flat surface disposed between the first end plate and the second end plate; a first low pressure supply beneath said outer drum surface in fluid communication with a first at least one hole through said outer drum surface; and a second low pressure supply beneath said outer drum surface in fluid communication with a second at least one hole through said outer drum surface.
58. The vacuum drum apparatus of claim 57 wherein the second at least one hole comprises an array of holes in the circular cylindrical surface.
59. The vacuum drum apparatus of claim 58 further comprising: means for aligning a removable mask having an array of holes with a portion of the holes in the array of holes in the circular cylindrical surface such that all but said portion of holes in the array of holes in the circular cylindrical surface are sealed by the mask aligned on said outer drum surface.
60. The vacuum drum apparatus of claim 57 wherein the first at least one hole comprises a first leading edge array of holes for use to adhere a leading edge of a substrate to the mask and the first flat surface.
61. The vacuum drum apparatus of claim 58 further comprising a second flat surface on the outer drum surface,
-39- said second flat surface disposed between the end plates and spaced apart from the first flat surface.
62. The vacuum drum apparatus of claim 61 further comprising a third flat surface on the outer drum surface, said third flat surface disposed between the end plates and spaced apart from the first and second flat surfaces for mounting a trailing edge of the mask to the outer surface of the drum.
63. The vacuum drum apparatus of claim 61 further comprising a second leading edge array of holes in the second flat surface connected to the first low pressure source, said second leading edge array being used to adhere a leading edge of the mask to said outer surface.
64. The vacuum drum apparatus of claim 57 wherein the second low pressure source comprises a hollow chamber formed within said curved outer surface and a passageway extending within said curved outer surface from said hollow chamber through the second end plate.
65. The vacuum drum apparatus of claim 59 wherein said means for aligning comprises at least two precision placed registration pins in said first flat surface of the outer drum surface.
66. The vacuum drum apparatus of claim 59 wherein said means for aligning comprises at least two precision placed registration holes in said first flat surface of the outer drum surface.
67. The vacuum drum apparatus of claim 65 wherein said registration pins are tapered.
-40-
68. The vacuum drum apparatus of claim 59 wherein said outer drum surface is made of magnetic material and said removable mask includes magnetized particles.
69. The vacuum drum apparatus of claim 68 further comprising a magnetic sheet having an array of holes and an adhesive layer for mounting said magnetic sheet onto said outer drum surface with said array of holes in said magnetic sheet in alignment with the array of holes in said outer drum surface.
70. The vacuum drum apparatus of claim 67 further comprising a removable mask having a leading edge array of holes and a plurality of holes such that said removable mask may be mounted on the outer drum surface with the leading edge array of holes in fluid communication with the first at least one hole and the plurality of holes in fluid communication with the second at least one hole.
71. A vacuum drum apparatus comprising: a circular cylinder mounted for rotation about its axis, said circular cylinder having an outer surface with at least a portion of the outer surface being made of a porous material and a first flat surface on said outer surface; means for applying a first low pressure to said first flat surface; means for applying a second low pressure to said circular cylinder; and means for aligning a removable mask about said outer surface of said circular cylinder, said mask having a plurality of holes such that all but a portion of said circular cylinder is sealed by said mask aligned on said outer surface of said circular cylinder.
72. The vacuum drum apparatus of claim 71 further
-41- comprising a leading edge area on said circular cylinder connected to the means for applying a first low pressure, said leading edge area being used to adhere a leading edge of a substrate to said removable mask and the circular cylinder.
73. The vacuum drum apparatus of claim 72 wherein said means for applying a second low pressure comprises a hollow chamber within said circular cylinder and a passageway extending along the axis of said circular cylinder from the hollow chamber through a side of said circular cylinder.
74. The vacuum drum apparatus of claim 73 wherein said means for aligning comprises at least two precision placed registration pins in said outer surface of said circular cylinder.
75. A method of making a mask for mounting a substrate of a given area on a vacuum drum comprising the steps of: providing a flexible sheet; laser cutting an outline of said mask in said flexible sheet; and laser cutting a plurality of holes in said mask arranged to lie along and within the perimeter of said substrate.
76. A method for modifying a vacuum drum to receive a substrate of a given area comprising the steps of: providing a flexible sheet; forming a mask by laser cutting a plurality of holes in said flexible sheet arranged to lie along and within the perimeter of said substrate; and mounting said mask on the vacuum drum so that a low pressure within said drum is in fluid communication with said plurality of holes in the mask so that the substrate may be held on the drum by the low pressure through the plurality of holes.
-42-
77. The method of claim 76 further comprising the step of laser cutting an outline of said mask in said flexible sheet.
78. The method of claim 76 wherein the step of laser cutting said plurality of holes in said mask is accomplished by using a computer file.
79. A method for loading a rotatable vacuum drum comprising: providing a drum having on its outer surface a longitudinally extending flat surface and at least one opening in the flat surface in fluid communication with a conduit and at least one opening in the outer surface in fluid communication with a vacuum chamber; staging a mask having a plurality of holes within an area defined by an outline of a substrate onto the vacuum drum, such that the holes in the mask and the drum are aligned to permit fluid communication through each hole with either of the conduit and the vacuum chamber; transferring a sheet of substrate having a leading edge and a trailing portion, such that the leading edge of the substrate is placed onto the mask against the longitudinally extending flat surface; applying a first low pressure to the conduit so as to adhere the leading edge of the substrate against the mask and the longitudinally extending flat surface of the drum; and applying a second low pressure to the vacuum chamber so as to secure the trailing portion of the substrate against the mask and the outer surface of the vacuum drum.
80. A method according to claim 79, wherein the step of staging the mask includes the steps of: positioning at least one mask adjacent to the vacuum drum ;
-43- transferring the mask onto the drum such that the leading edge of the mask adheres to the vacuum drum; and securing the trailing edge of the mask against the outer surface of the drum.
81. A method according to claim 80, wherein the step of securing the trailing edge of the mask includes the steps of: rotating the vacuum drum in a direction away from the trailing edge of the mask so as to advance the trailing edge of the mask onto the vacuum drum; and pressing the trailing edge of the mask against the outer surface so as to adhere the mask to the vacuum drum.
82. A method according to claim 79, wherein after the step of applying a first low pressure to the conduit, the method includes the steps of: rotating the vacuum drum so as to pull the trailing edge of the substrate onto the mask and drum; and pressing the trailing edge of the substrate against the mask and the outer surface of the vacuum drum.
83. A method for changing substrate size on a vacuum drum, the method comprising: providing a drum having an outer surface; providing a first mask pressed against the outer surface of the drum for adherence of the mask thereto, the mask having an array of holes within an area corresponding to a shape defined by a first substrate; lifting the mask off the outer surface of the drum with a force sufficiently strong to overcome the adherence of the mask to the outer surface of the drum; and pressing a second mask against the outer surface of the drum for adherence of the mask thereto, the second mask having an array of holes within an area different than the shape defined by the first substrate.
-44-
84. A method according to claim 83, wherein adherence of the mask to the outer surface of the drum is achieved by an instance of one of hook elements and loop elements positioned on the mask, and an instance of the other of hook elements and loop elements positioned on the drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP96911445A EP0890257A2 (en) | 1995-03-28 | 1996-03-27 | Universal vacuum drum and mask |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US41213095A | 1995-03-28 | 1995-03-28 | |
| US08/412,130 | 1995-03-28 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| WO1996030291A2 WO1996030291A2 (en) | 1996-10-03 |
| WO1996030291A3 WO1996030291A3 (en) | 1997-01-16 |
| WO1996030291B1 true WO1996030291B1 (en) | 1997-02-27 |
Family
ID=23631716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1996/004188 WO1996030291A2 (en) | 1995-03-28 | 1996-03-27 | Universal vacuum drum and mask |
Country Status (4)
| Country | Link |
|---|---|
| US (3) | US5758874A (en) |
| EP (1) | EP0890257A2 (en) |
| CA (1) | CA2215614A1 (en) |
| WO (1) | WO1996030291A2 (en) |
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| JP4638165B2 (en) * | 2003-07-16 | 2011-02-23 | ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト | Machine for processing sheets |
| DE20312837U1 (en) | 2003-08-20 | 2003-10-16 | Brüder Neumeister GmbH, 77933 Lahr | Roller with rotation drive e.g. for printing plates, roller has holding/retaining magnets on outer face in addition to recesses subject to low pressure |
| US20060043666A1 (en) * | 2004-08-31 | 2006-03-02 | Eastman Kodak Company | Multi-chambered vacuum platen |
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| DE102008025468B3 (en) * | 2008-05-28 | 2009-06-04 | WINKLER+DüNNEBIER AG | Suction hole covering device for suction roller to transport e.g. folding box cuts of paperboard box, has flexible mask foil with suction openings arranged depending on format of flat material pieces to be transported |
| CN103723537B (en) * | 2012-10-12 | 2016-09-14 | 由田新技股份有限公司 | Conveyor |
| US9238359B2 (en) * | 2013-03-14 | 2016-01-19 | Esko-Graphics Imaging Gmbh | Method and apparatus for attaching flexographic and metal back plates on an imaging cylinder |
| DE102014002907B3 (en) * | 2014-02-28 | 2015-03-05 | Heidelberger Druckmaschinen Ag | Vacuum drum system of a printing material sheet processing machine |
| DE102016223225B4 (en) | 2015-11-23 | 2025-01-02 | Koenig & Bauer Ag | Device for treating substrates |
| EP3380329B1 (en) | 2015-11-23 | 2019-09-04 | Koenig & Bauer AG | Method and device having modules and cutting devices for sheet-like substrates |
| EP3380284B1 (en) | 2015-11-23 | 2020-08-12 | Koenig & Bauer AG | Device and method for processing of substrates |
| DE102016223223A1 (en) | 2015-11-23 | 2017-05-24 | Koenig & Bauer Ag | Apparatus for treating substrates |
| DE102015223104B4 (en) * | 2015-11-23 | 2023-08-03 | Koenig & Bauer Ag | Device for treating substrates |
| WO2017089420A2 (en) | 2015-11-23 | 2017-06-01 | Koenig & Bauer Ag | Device and method for processing substrates |
| DE102016226175B4 (en) | 2016-05-30 | 2023-12-14 | Koenig & Bauer Ag | Device for treating substrates |
| DE102017204596B4 (en) | 2017-03-20 | 2020-05-14 | Koenig & Bauer Ag | Tool and positioning procedure |
| DE102017204595B4 (en) | 2017-03-20 | 2021-06-10 | Koenig & Bauer Ag | Device for treating substrates |
| DE102017204598B4 (en) | 2017-03-20 | 2021-06-10 | Koenig & Bauer Ag | Device for treating substrates |
| EP3392047B1 (en) | 2017-04-18 | 2021-03-24 | HP Scitex Ltd | Suction array layouts |
| IT201800006994A1 (en) | 2018-07-06 | 2020-01-06 | SUCTION DEVICE FOR THE HOLDING AND / OR TRANSPORT OF OBJECTS OF DIFFERENT FORMATS | |
| DE102018219715B3 (en) | 2018-11-16 | 2020-01-16 | Koenig & Bauer Ag | Device and a sheet processing machine for treating substrates |
| DE102018219712B4 (en) | 2018-11-16 | 2021-08-05 | Koenig & Bauer Ag | Device for treating substrates |
| WO2022136349A1 (en) * | 2020-12-22 | 2022-06-30 | Esko-Graphics Imaging Gmbh | Microporous metal vacuum drum and imaging system and method featuring the same |
| CN112722929B (en) * | 2021-01-30 | 2022-09-23 | 吉安市三江超纤无纺有限公司 | Non-woven fabric winding drum for mask machine production |
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-
1996
- 1996-03-27 WO PCT/US1996/004188 patent/WO1996030291A2/en not_active Application Discontinuation
- 1996-03-27 EP EP96911445A patent/EP0890257A2/en not_active Withdrawn
- 1996-03-27 CA CA002215614A patent/CA2215614A1/en not_active Abandoned
- 1996-03-27 US US08/622,942 patent/US5758874A/en not_active Expired - Fee Related
- 1996-10-21 US US08/734,255 patent/US5716048A/en not_active Expired - Fee Related
-
1997
- 1997-06-20 US US08/880,061 patent/US5865433A/en not_active Expired - Fee Related
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