Patterned web cutting method and system for operation manipulation of displayed nested templates relative to a displayed image of a patterned web

• US 5,172,326 A
• Filed: 03/19/1990
• Issued: 12/15/1992
• Est. Priority Date: 03/19/1990
• Status: Expired due to Fees

• Current Assignee: Automated Solutions, LLC
• Original Assignee: Forcam, Inc. (FORCAM GmbH)
• Inventors: Icenhour, Gary L., Hickman, Harry S. II, Holshouser, Thomas E., Campbell, Robert L. Jr.
• Primary Examiner(s): Smith, Jerry
• Assistant Examiner(s): Trammell, Jim
• Application Number:
  US07/495,716
• Time in Patent Office: 1,002 Days
• Field of Search: 364/468, 364/469, 364/470, 364/471, 364/473, 364/474.22, 364/474.08, 364/474.09, 364/474.25, 198/817, 198/840, 198/845, 382/8, 382/48, 382/61, 83/76.7, 83/734, 219/121.67-121.72, 219/121.82
• US Class Current: 700/134
• CPC Class Codes: B23K 2101/16 Bands or sheets of indefinite length
• CPC Class Codes: B23K 2103/38 Fabrics, fibrous materials
• CPC Class Codes: B23K 2103/50 Inorganic material, e.g. metals, not provided for in B23K2103/02 – B23K2103/26
• CPC Class Codes: B23K 26/032 using optical means
• CPC Class Codes: B23K 26/0838 by using an endless conveyor belt
• CPC Class Codes: B23K 26/38 by boring or cutting
• CPC Class Codes: B26D 2005/002 Performing a pattern matching operation
• CPC Class Codes: B26D 5/00 Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
• CPC Class Codes: B26D 5/005 Computer numerical control means
• CPC Class Codes: B26D 5/007 Control means comprising cameras, vision or image processing systems
• CPC Class Codes: B26F 1/38 Cutting-out; Stamping-out
• CPC Class Codes: B26F 1/382 wherein the cutting member reciprocates in, or substantially in, a direction parallel to the cutting edge
• CPC Class Codes: B26F 3/004 by means of a fluid jet methods for use of abrasive blasting for cutting B24C1/045; guns for abrasive fluid jets B24C5/02; perforating by non-mechanical means, e.g. by fluid jet B26F1/26
• CPC Class Codes: G06Q 10/043 Optimisation of two dimensional placement, e.g. cutting of clothes or wood

Abstract

A method and system for cutting a web, such as a patterned fabric, displays a nested template pattern for the fabric along with a superimposed image of the fabric on a display screen, to allow the nested template pattern to be moved relative to the fabric image, under operator control. The nested template pattern may be moved as a whole, and individual templates may be moved, rotated or warped, so that a new template pattern is produced which is aligned to the fabric image, notwithstanding defects such as skew, bow or uneven repeat in the fabric. Once produced, the new template pattern is converted into customized cutting instructions for the fabric. The customized instructions are used to control a cutting station, for example a laser cutting station, to cut each section of fabric according to its customized cutting instructions.

High speed cutting of patterned fabric may be provided by simultaneously capturing the image of a first section of fabric, generating a customized template pattern for a second section of fabric, the image of which has already been captured, and cutting a third section of fabric, the customized cutting instructions for which have already been generated.

Claims

1. A web cutting system comprising:

image capture means, for capturing an image of a section of a web;

operator input means for accepting operator commands; and

electronic controlling means, connected to said image capture means and said operator input means, comprising;

means for storing a first template pattern having a plurality of nested templates for the web;

means cooperating with said storing means, for displaying at least part of the captured image of the web section, with corresponding ones of the plurality of nested templates superimposed thereon;

means cooperating with said displaying means and said operator input means, for effecting movement of the displayed nested templates relative to one another and relative to the displayed image of the web section in response to operator commands to said operator input means, to individually align the displayed nested templates to the displayed image of the web section, and thereby produce a second template pattern for the displayed nested templates; and

means cooperating with said movement effecting means, for converting the second template pattern into cutting instructions for the web section; and

web cutting means, connected to said controlling means, for cutting said web section according to the cutting instructions;

whereby the web is cut based upon the second template pattern, the templates of which are individually aligned to the web.

2. The system of claim 1 further comprising conveying means, connected to said controlling means, for conveying the web from said image capture means to said web cutting means, and wherein said controlling means further comprises:

means for controlling said conveying means to convey said web section to said image capture means for capturing the image thereof, and to subsequently convey said web section to said web cutting means, for cutting the web section according to the cutting instructions.

3. The system of claim 2 wherein said image capture means comprises a video camera movably mounted above said conveying means at a first location thereon, and wherein said controlling means further comprises means for controlling said video camera for movement relative to said web section.

4. The system of claim 2 wherein said image capture means comprises a stationary video camera, mounted above said conveying means at a first location thereon, for capturing an image of said web section.

5. The system of claim 2 wherein said image capture means is mounted adjacent said conveying means at a first location;

wherein said cutting means comprises a movable laser cutting means mounted adjacent said conveying means at a second location, spaced from the first location; and

wherein said controlling means further comprises means for controlling said movable laser cutting means to cut said web section.

6. The system of claim 5 wherein said controlling means further comprises means for controlling said conveying means and said movable laser cutting means to cut said web section while said conveying means is moving.

7. The system of claim 1 further comprising transfer means, for conveying the web from said image capture means to said fabric cutting means.

8. The system of claim 7 wherein said transfer means comprises a transfer table.

9. The system of claim 1 wherein said image capture means comprises a movable video camera, and wherein said controlling means further comprises means for controlling said movable video camera for movement relative to said web section.

10. The system of claim 1 wherein said image capture means comprises a stationary video camera for capturing the image of said web section.

11. The system of claim 1 wherein said means for storing a first template pattern includes means for storing first template pattern for use with fabric.

12. The system of claim 1 wherein said means for storing a first template pattern includes means for storing first template pattern for use with patterned fabric.

13. The system of claim 1 wherein said means for storing a first template pattern includes means for storing first template pattern for use with patterned fabric to cover furniture.

14. The system of claim 1 wherein said means for storing a first template pattern includes means for storing first template pattern for use with leather.

15. The system of claim 1 wherein said means for storing a first template pattern includes means for storing first template pattern for use with patterned leather.

16. The system of claim 1 wherein said means for displaying comprises a high resolution color display.

17. The system of claim 1 wherein said means for displaying comprises a high resolution monochrome display.

18. The system of claim 1 wherein said operator input device comprises a pointing device.

19. The system of claim 1 wherein said means for storing a first template pattern includes means for storing first template pattern for use with perfect fabric.

20. The system of claim 1 wherein said web cutting means comprises a laser cutting means.

21. The system of claim 20 wherein said laser cutting means comprises a movable laser cutting means, and wherein said controlling means further comprises means for controlling said movable laser cutting means to cut said web section.

22. The system of claim 20 wherein said water jet cutting means comprises movable water jet cutting means, and wherein said controlling means further comprises means for controlling said movable water jet cutting means to cut said web section.

23. The system of claim 1 wherein said web cutting means comprises a water jet cutting means.

24. The system of claim 23 wherein said controlling means further comprises means for controlling said conveying means and said movable water jet cutting means to cut said web section according to the cutting instructions while said conveying means is moving.

25. The system of claim 1 further comprising means controlled by said controlling means, for placing identifying indicia directly upon the web section.

26. The system of claim 25 wherein said identifying indicia placing means comprises a label printer.

27. The system of claim 1 further comprising a chalker controlled by said controlling means, for placing chalk marks directly upon said web section.

28. The system of claim 1 wherein said means for effecting movement of the displayed nested templates comprises means for effecting translational movement of the displayed nested templates relative to the displayed image of the web section.

29. The system of claim 1 wherein said means for effecting movement of the displayed nested templates comprises means for effecting rotational movement of at least one of the displayed nested templates relative to the displayed image of the web section.

30. The system of claim 1 wherein said controlling means further comprises means for effecting warping of at least one of the displayed nested templates to align the at least one template to the displayed image of the web section.

31. The system of claim 1 wherein said controlling means further comprises means for magnifying the displayed image of the web section and the displayed nested templates superimposed thereon.

32. The system of claim 1 wherein said controlling means further comprises means for panning the displayed captured image of the web section and the displayed nested templates superimposed thereon.

33. The system of claim 1 wherein said image capture means further comprises means for digitizing the captured image of the web section.

34. The system of claim 33 wherein said digitizing means comprises a frame grabber.

35. The system of claim 33 wherein said controlling means further comprises means for storing the digitized captured image of the web section.

36. The system of claim 35 wherein said controlling means further comprises means for magnifying the stored digitized captured image and the stored plurality of nested templates.

37. The system of claim 35 wherein said controlling means further comprises means for panning the stored digitized captured image and the stored plurality of nested templates.

38. The system of claim 1 wherein said controlling means comprises a computer workstation.

39. The system of claim 1 wherein said means for effecting movement and said means for converting operate simultaneously.

40. The system of claim 1 wherein said displaying means comprises:

a display device;

means for displaying the captured image of the web section in a first section of the display device, with the nested templates superimposed thereon;

means for displaying a window in the first section of the display device, for enclosing at least some of the first section of the display device; and

means for displaying the image and templates enclosed by the window in a second section of the display device; and

wherein said means for effecting movement of the nested templates further comprises means for effecting movement of the window in said first section.

41. The system of claim 40 wherein said means for displaying the captured image and nested templates enclosed by the window comprises means for displaying the captured image and corresponding templates at a predetermined magnification.

42. The system of claim 1 wherein said controlling means further comprises:

means for indicating that at least one of the nested templates are aligned to the displayed image of the web section, and may be cut by said web cutting means.

43. The system of claim 42 wherein said indicating means comprises:

a bar on said displaying means, spanning across the at least part of the captured image of the web section and the nested templates superimposed thereon; and

means for effecting movement of said bar, to indicate that the at least part of the captured image of the web section and the nested templates superimposed thereon are aligned.

44. The system of claim 1 wherein said means for storing a first template pattern comprises:

means for storing therein a library of template patterns including said first template pattern; and

means for selecting said first template pattern from said library of template patterns.

45. A web cutting system comprising:

image capture means, for capturing an image of a section of a web;

electronic controlling means, connected to said image capture means, comprising;

means for storing a first template pattern having a plurality of nested templates for the web;

means cooperating with said storing means, for displaying at least part of the captured image of the web section, with corresponding ones of the plurality of nested templates superimposed thereon;

means cooperating with said displaying means, for effecting movement of the displayed nested templates relative to the displayed image of the web section, to align the displayed nested templates to the displayed image of the web section, and thereby produce a second template pattern for the displayed nested templates; and

means cooperating with said movement effecting means, for converting the second template pattern into cutting instructions for the web section; and

web cutting means, connected to said controlling means, for cutting said web section according to the cutting instructions;

wherein said controlling means comprises a computer workstation operatively connected to a computer numerical controller.

46. A web cutting system comprising:

image capture means, for capturing an image of a second of a web;

electronic controlling means, connected to said image capture means, comprising;

means for storing a first template pattern having a plurality of nested templates for the web;

means cooperating with said storing means, for displaying at least part of the captured image of the web section, with corresponding ones of the plurality of nested templates superimposed thereon;

means cooperating with said displaying means for effecting movement of the displayed nested templates relative to the displayed image of the web section, to align the displayed nested templates to the displayed image of the web section, and thereby product a second template pattern for the displayed nested templates; and

means cooperating with said movement effecting means, for converting the second template pattern into cutting instructions for the web section;

web cutting means, connected to said controlling means, for cutting said web section according to the cutting instructions;

conveying means, connected to said controlling means, for conveying the web from said image capture means to said web cutting means, said conveying means comprising a flat wire conveyor; and

wherein said controlling means further comprises;

means for controlling said conveying means to convey said web section to said image capture means for capturing the image thereof, and to subsequently convey said web section to said web cutting means, for cutting the web section according to the cutting instructions.

47. The system of claim 46 wherein said flat wire conveyor comprises a plurality of nested serpentine wires, vertically mounted face to face relative to one another.

48. A cutting system comprising:

a conveyor including a plurality of flat-faced, serpentine, nested wires, spaced apart from one another, with the flat faces thereof facing one another; and

a plurality of rods, each of which passes through at least a pair of adjacent ones of said flat-faced, serpentine nested wires for maintaining said flat-faced serpentine wires spaced apart from one another; and

a laser beam for cutting an article carried on said conveyor, the faces of said flat-faced serpentine wires being oriented parallel to said laser beam;

whereby minimal area of said conveyor is exposed to said laser beam.

49. A cutting system comprising:

a conveyor including a plurality of flat-faced, serpentine, nested wires, spaced apart from one another, with the flat faces thereof facing one another; and

a plurality of rods, each of which passes through at least a pair of adjacent ones of said flat-faced, serpentine, nested wires for maintaining said flat-faced serpentine wires spaced apart from one another; and

a water jet for cutting an article carried on said conveyor, the faces of said flat-faced serpentine wires being oriented parallel to said water jet;

whereby minimal area of said conveyor is exposed to said water jet.

50. A web cutting system comprising:

movable laser beam cutting means;

means for conveying the web past said movable laser beam cutting means; and

means for controlling said movable laser beam cutting means and said conveying means to cut the web by simultaneously moving said conveying means and said movable laser beam cutting means;

wherein said conveying means comprises a plurality of flat-faced, serpentine nested wires, spaced apart from one another, with the flat faces thereof facing one another; and

means for maintaining said flat-faced serpentine wires spaced apart from one another; and

wherein the laser beam is oriented parallel to said flat faced serpentine wires, whereby minimal area of said conveying means is exposed to said laser beam.

51. A web cutting system comprising:

movable water jet cutting means;

means for conveying the web past said movable water jet cutting means; and

means for controlling said movable water jet cutting means and said conveying means to cut the web by simultaneously moving said conveying means and said movable water jet cutting means;

wherein said conveying means comprises a plurality of flat-faced, serpentine, nested wires, spaced apart from one another, with the flat faces thereof facing one another; and

means for maintaining said flat-faced serpentine wires spaced apart from one another; and

wherein the water jet is oriented parallel to said flat faced serpentine wires, whereby minimal area of said conveying means is exposed to said water jet.

52. A web cutting method, comprising the following steps:

capturing an image of a first section of a web;

aligning a displayed plurality of nested templates relative to a displayed previously captured image of a second section of the web, to generate customized cutting instructions for the second section of the web; and

cutting a third section of the web in accordance with previously generated customized cutting instructions for the third section of the web;

wherein said capturing, aligning and cutting steps are performed simultaneously;

whereby each section of the web is cut at high speed using customized cutting instructions which are generated for each specific section of the web.

53. The method of claim 52 wherein said aligning step comprises the step of individually aligning the displayed plurality of nested templates to the displayed previously captured image of the second section of the web.

54. The method of claim 52 wherein said capturing step comprises the step of capturing the image of the first section of the web using a movable video camera.

55. The method of claim 52 wherein said capturing step comprises the steps of:

capturing the image of the first section of the web using a video camera;

digitizing the captured image; and

storing the digitized captured image in a memory device.

56. The method of claim 52 wherein the web comprises fabric.

57. The method of claim 56 wherein the fabric comprises patterned fabric.

58. The method of claim 52 wherein the web comprises leather.

59. The method of claim 52 wherein said aligning step is performed on a high resolution video display.

60. The method of claim 52 wherein said aligning step comprises the step of aligning the displayed plurality of nested templates relative to a displayed previously captured image of a second section of the web in response to an operator input.

61. The method of claim 52 wherein the displayed plurality of nested templates comprise nested templates for a flawless web.

62. The method of claim 52 wherein said cutting step comprises the step of cutting the third section of the web with a laser beam.

63. The method of claim 52 wherein said cutting step comprises the step of cutting the third section of the web with a movable laser beam while the third section is moving.

64. The method of claim 52 wherein said cutting step comprises the step of cutting the third section of the web with a movable water jet while the third section is moving.

65. The method of claim 52 further comprising the step of placing identifying indicia directly upon the third web section.

66. The method of claim 65 wherein said identifying indicia placing step comprises the step of placing a label directly upon the third web section.

67. The method of claim 52 further comprising the step of placing chalk marks directly upon the third web section.

68. The method of claim 52 wherein said aligning step comprises the step of translating the displayed plurality of nested templates relative to the displayed previously captured image of the second section of the web.

69. The method of claim 52 wherein said aligning step comprises the step of rotating at least one of the displayed plurality of nested templates relative to the displayed previously captured image of the second section of the web.

70. The method of claim 52 wherein said aligning step comprises the step of warping at least one of the displayed plurality of nested templates relative to the displayed previously captured image of the second section of the web.

71. The method of claim 52 wherein said aligning step comprises the steps of:

displaying in a first section of a display device, the previously captured image of the second web section with the plurality of nested templates superimposed thereon;

displaying a window in the first section of the display device, for enclosing at least some of the first section of the display device; and

displaying the previously captured image and templates enclosed by the window in a second section of the display device.

72. The method of claim 71 wherein the last displaying step comprises the step of displaying the previously captured image and corresponding templates enclosed by the window at a predetermined magnification.

73. The method of claim 52 further comprising the step of indicating that at least one of the plurality of nested templates are aligned to the previously captured image of the second web section, and may be cut during said cutting step.

74. The method of claim 73 wherein said indicating step comprises:

displaying a bar across the displayed previously captured image of the second web section and the displayed plurality of nested templates; and

moving said bar, in response to an operator command, to indicate that the at least one of the plurality of nested templates is aligned to the displayed part of the previously captured image of the web section.

75. A patterned fabric cutting system comprising:

a fabric conveyor for conveying patterned fabric along a first direction;

a video camera mounted adjacent said fabric conveyor at a first location thereon, for capturing an image of the patterned fabric at said first location;

a frame grabber, connected to said video camera for digitizing the captured image of the patterned fabric at the first location;

a memory device, connected to said frame grabber, for storing therein the digitized captured image of the fabric at the first location;

a data storage device, for storing therein a first template pattern for the patterned fabric;

an operator display;

a cutting station mounted adjacent said fabric conveyor at a second location thereon, spaced from said first location along said first direction, for cutting the patterned fabric at the second location; and

a computer, operatively connected to said memory device, said data storage device and said operator display, said computer comprising;

a nesting module, for obtaining from memory device a stored, digitized, captured image of a first section of the patterned fabric and for displaying the obtained image on said operator display;

for obtaining at least part of the first template pattern from said data storage device and for displaying the obtained first template pattern on said operator display, superimposed on the displayed obtained image;

said nesting module being responsive to operator commands for aligning the first template pattern to the fabric pattern in the displayed obtained image to produce a customized template pattern for the first section of the patterned fabric; and

a cut queue module cooperating with said nesting module, for converting the customized template pattern into customized cutting instructions for the first section of the patterned fabric;

a computer numerical controller operatively connected to said computer, said fabric conveyor and said cutting station, for controlling said conveyor to move said first section of the patterned fabric in said first direction to the second location; and

for controlling the cutting station to cut the first section of fabric in accordance with the customized cutting instructions for the first section of fabric;

whereby the patterned fabric is cut based upon customized cutting instructions therefor.

76. The patterned fabric cutting system of claim 75 wherein said nesting module is responsive to operator commands for individually aligning at least one template in the first template pattern to the fabric pattern in the displayed obtained image.

77. The system of claim 75 wherein said video camera comprises a movable video camera, and wherein said nesting module further comprises means for controlling said movable video camera for movement relative to said first section of the patterned fabric.

78. The system of claim 75 wherein said video camera comprises a stationary video camera, and wherein said computer numerical controller further comprises means for controlling said conveyor to move said first section of the patterned fabric past said stationary video camera.

79. The system of claim 75 wherein said data storage device stores therein a first template pattern including a complete set of templates for patterned fabric to cover furniture.

80. The system of claim 75 wherein said operator display comprises a high resolution color display.

81. The system of claim 75 wherein said operator display comprises a high resolution monochrome display.

82. The system of claim 75 further comprising a pointing device, wherein the operator commands are provided to the nesting module by the pointing device.

83. The system of claim 75 wherein said data storage device stores therein a first template pattern for a flawless patterned fabric.

84. The system of claim 75 wherein said cutting station comprises a laser cutting station.

85. The system of claim 84 wherein said laser cutting station comprises a movable laser cutter;

and wherein said computer numerical controller further comprises means for controlling said movable laser cutter to cut said first section according to the customized cutting instructions produced by said cut queue module.

86. The system of claim 85 wherein said computer numerical controller further comprises means for controlling said fabric conveyor and said movable laser cutter to cut said first fabric section according to the cutting instructions while said fabric conveyor means is moving.

87. The system of claim 75 wherein said cutting station comprises a water jet cutting station.

88. The system of claim 87 wherein said water jet cutting station comprises a movable water jet cutter;

and wherein said computer numerical controller further comprises means for controlling said movable water jet cutter to cut said first section according to the customized cutting instructions produced by said cut queue module.

89. The system of claim 88 wherein said computer numerical controller further comprises means for controlling said fabric conveyor and said movable water jet cutter to cut said first fabric section according to the cutting instructions while said fabric conveyor means is moving.

90. The system of claim 75 further comprising means, operatively connected to said computer numerical controller, for placing identifying indicia directly upon the first fabric section.

91. The system of claim 90 wherein said identifying indicia placing means comprises a label printer.

92. The system of claim 75 further comprising a chalker, operatively connected to said computer numerical controller, for placing chalk marks directly upon said first fabric section.

93. The system of claim 75 wherein the nesting module is responsive to operator commands for translating the first template pattern relative to the displayed obtained image.

94. The system of claim 75 wherein the nesting module is responsive to operator commands for rotating at least one template in the first template pattern relative to the displayed obtained image.

95. The system of claim 75 wherein the nesting module is responsive to operator commands for warping at least one template in the first template pattern relative to the displayed obtained image.

96. The system of claim 75 wherein said fabric conveyor comprises a flat wire conveyor.

97. The system of claim 96 wherein said flat wire conveyor comprises a plurality of nested serpentine wires, vertically mounted face to face relative to one another.

98. The system of claim 75 wherein said nesting module further comprises means for magnifying the first template pattern and the displayed obtained image.

99. The system of claim 75 wherein said nesting module further comprises means for panning the first template pattern and the displayed obtained image.

100. The system of claim 75 wherein said computer comprises a microprocessor-based workstation.

101. The system of claim 75 wherein said nesting module and said cut queue module operate simultaneously.

102. The system of claim 75 wherein said nesting module further comprises:

means for displaying the captured image of the web section in a first section of the operator display, with the nested templates superimposed thereon;

means for displaying a window in the first section of the operator display, for enclosing at least some of the first section of the operator display; and

means for displaying the image and templates enclosed by the window in a second section of the display device.

103. The system of claim 102 wherein said means for displaying the image and templates enclosed by the window comprises means for displaying the image and templates at a predetermined magnification.

104. The system of claim 102 wherein said nesting module further comprises:

means for indicating that at least one of the nested templates is aligned to the displayed image of the web section, and may be cut by said cutting station.

105. The system of claim 104 wherein said indicating means comprises:

a bar on said operator display, spanning across the image and the templates; and

means for effecting movement of said bar, to indicate that the at least one of the templates is aligned.

106. The system of claim 75 wherein said data storage device stores therein a library of template patterns including said first template pattern;

and wherein the nesting module further comprises means for selecting said first template pattern from said library of template patterns.