Integrated and computer controlled printing press, inspection rewinder and die cutter system

• US 6,112,658 A
• Filed: 02/25/1999
• Issued: 09/05/2000
• Est. Priority Date: 02/25/1999
• Status: Expired due to Fees

• Current Assignee: George Schmitt & Co.Inc.
• Original Assignee: George Schmitt & Co.Inc.
• Inventors: Abt, Richard B., McGeary, Christopher C., Gunther, William G., Moore, Peter, Penati, Anthony A., Brining, Richard J.
• Primary Examiner(s): Hilten, John S.
• Assistant Examiner(s): Nolan, Jr., Charles H.
• Application Number:
  US09/257,482
• Time in Patent Office: 558 Days
• Field of Search: 101/171, 382/181, 382/190, 382/195
• US Class Current: 101/171
• 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 5/007 Control means comprising cameras, vision or image processing systems
• CPC Class Codes: B26D 5/08 Means for actuating the cutting member to effect the cut
• CPC Class Codes: B26D 5/34 scanning being effected by a photosensitive device
• CPC Class Codes: B26D 7/018 Holding the work by suction
• CPC Class Codes: B26D 7/18 Means for removing cut-out material or waste
• CPC Class Codes: B26D 7/24 arranged to disable the operating means for the cutting member
• CPC Class Codes: B41F 13/12 Registering devices
• CPC Class Codes: B41F 33/0009 Central control units
• CPC Class Codes: B65H 2220/01 indicating an entity as a function of which control, adjustment or change is performed, i.e. input
• CPC Class Codes: B65H 2511/512 Marks, e.g. invisible to the human eye; Patterns
• CPC Class Codes: B65H 2553/42 Cameras
• CPC Class Codes: B65H 2557/12 Network
• CPC Class Codes: B65H 26/00 Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms safety devices in general F16P; investigating chemical or physical properties of materials in general G01N; indicating devices in general G08B

Abstract

An integrated and computer controlled printing press, inspection rewinder and die cutter system for manufacturing printed products from a web of material is provided, which generally comprises at least one rotary die cutter, a plurality of cameras, a plurality of networked computers electrically connected to the cameras for inspecting the print registers and the print to cut register of each product, and at least one monitor connected to the networked computers. The system uses an identification code for each product to precisely detect, track and record in a permanent format the defective and non-defective printed products at every stage of the manufacturing process and can also automatically adjust the die cutters to correct the cut to print registration in real time.

Claims

1. A system for tracking errors during manufacture of a plurality of printed products printed on a web of material, comprising:

at least one rotary die cutter;

first and second cameras for producing viewed images of spaced segments of the web including print and cut registration symbols on the web;

a plurality of networked computers respectively electrically connected to said cameras to receive and store images produced by the cameras, with at least one of said images including print and cut registrations symbols located on the web,

one of said plurality of networked computers inspecting the images of the web to compare print and cut registrations to determine whether a printed product is defective, said one networked computer including a software data file for storing and updating information of a defective status of printed products, and including software using the software data file to cause the rejection of defective printed products and enable visual verification that defective printed products are rejected; and

at least one monitor electrically connected to one of the plurality of networked computers for displaying at least one of the viewed images.

2. The system for tracking errors of claim 1, further comprising:

a printing press for printing products having at least two printed colors on the web with print registrations for respective colors;

said plurality of networked computers having software for inspecting viewed images of the web for comparison with print registrations associated with each color to determine if printed products are defective; and

a second monitor electrically connected a said networked computer for displaying viewed images associated with a second camera directed at the web.

3. The system for tracking errors of claim 2, further comprising:

wherein one of said cameras is a linear camera for producing third viewed images of the web; and

one of said networked computers being electrically connected to said linear camera, said latter computer including a second software data file containing information concerning a desired viewed image and containing software to determine if a printed product observed by said linear camera is defective.

4. The system for tracking errors of claim 3, further comprising:

an inspection rewinder for rewinding a web of printed product;

a third camera for producing third viewed images of the web;

a third computer electrically connected to said third camera and networked with said networked computers, said plurality of networked computers providing said third computer with the software data file having the information of the defective status of products; and

a third monitor for displaying the information of the defective status of products.

5. The system for tracking errors of claim 1, further comprising a reject gate located for separating the defective printed products from non-defective printed products, wherein one of the plurality of networked computers includes software to verify that the defective printed products were rejected at the reject gate.

6. A printing and rotary die cutting system for manufacturing a plurality of printed products contained on a web, comprising:

a printing press for printing a plurality of colors and for placing a print register mark on the web for each printed color to denote registration between the printed colors;

four rotary die cutters respectively positioned to cut a printed product from the web and for placing a cut register mark on the web, each cut register mark having an associated print register mark;

five cameras for producing viewed images of the web at locations that are associated with respective rotary die cutters, said printing press having a camera positioned to produce an image of the printed colors;

a plurality of networked computers including a server computer, said networked computers electrically connected to said cameras to receive viewed images therefrom and including software for inspecting the viewed images of the web to measure an accuracy of the print register of the printed colors with respect to each other and to measure an accuracy of the cut register mark with respect to the associated print register mark on the web and determine whether a printed product is defective, software including a software data file located in a said networked computer for containing a list of unique printed product identification codes, and verifying and updating the software data file that defective printed products have been rejected; and

at least one monitor electrically connected to the plurality of networked computers for displaying the status of defective printed products.

7. The system for tracking errors of claim 6, further comprising a reject gate for separating the defective printed products from non-defective printed products, wherein one of said computers includes software to verify that defective printed products were rejected at the reject gates.

8. The rotary die cutting system of claim 6, further comprising

a rewinder coupled to the web for rewinding the web of printed product, wherein at least one computer is electrically connected to the rewinder;

an infeed unit for isolating the rotary die cutters from variations caused by unwinding;

a reject gate for separating defective printed products from non-defective printed products, wherein a networked computer includes software to verify that defective printed products were rejected at the reject gate, and wherein a networked computer is electrically connected to the printing press, and wherein at least one camera is provided for viewing operative web portions cut by the rotary die cutters.

9. A method for manufacturing printed products contained on a web using a printing press and a rotary die cutting system having a plurality of rotary die cutters, the steps comprising:

placing a print register mark on the web for every color printed by a printing press to denote a print register of the printed colors;

placing a cut register mark on the web to denote a cut register of a rotary die cutter;

creating a first viewed image of the web after it passes through the printing press using a first camera electrically connected to a networked computer;

measuring an accuracy of a print register of each color with respect to each other color for each product by using at least one of the plurality of networked computers to compare from the first viewed image each print register mark with respect to the each other print register mark for each product;

determining if each product is defective by the accuracy of each print register mark with respect to each other print register marks;

creating a second viewed image of the web after it passes through the rotary die cutter using a second camera electrically connected to a said networked computer;

measuring an accuracy of a print to cut register for each product by using at least one of the plurality of networked computers to compare the print register and the cut register from the second viewed image;

determining if each product is defective by the accuracy of the cut to print register;

rejecting each defective product; and

verifying that each defective product was removed by using one of the networked computers.

10. A method for manufacturing printed products according to claim 9, further comprising the step of automatically adjusting the cut register of the rotary die cutter so as to adjust the cut to print register.

11. A method for manufacturing printed products according to claim 9, further comprising the steps of:

creating a software data file containing an accuracy of the print register of each color with respect to each other color and an accuracy of the cut to print register for each product; and

verifying that each defective product was removed by using one of the networked computers to review the software data file.

12. A method for manufacturing printed products according to claim 9, further comprising the steps of:

creating a software data file containing a list of defective products;

verifying that each defective product was removed by using one of the networked computers to review the software data file.

13. A method for manufacturing a printed product according to claim 9, further comprising the step of placing a mark on the web containing the product such that the defective product can be identified as being defective and be removed.

14. A method for manufacturing printed products contained on a web using a rotary die cutting system having a plurality of rotary die cutters, the steps comprising:

creating a unique identification code for each product;

creating a viewed image of the product after it passes through the die cutting system using at least one camera electrically connected to a plurality of networked computers;

inspecting the viewed image of the product for a defect using at least one of the plurality of networked computers;

creating a software data file containing a list of defective products and their unique identification codes;

rejecting the defective products; and

verifying that the defective products were removed by using one of the networked computers to review the software data file.

15. A method for manufacturing a printed product according to claim 14, further comprising the steps of:

creating a software data file containing an accuracy of a cut to print register for each product;

verifying that the defective products were removed by using one of the networked computers to review the software data file.

16. A method for manufacturing a printed product according to claim 14, further comprising the steps of:

placing a first registration mark on the web to denote a print register of the printer;

placing a second registration mark on the web to denote a cut register of one of the rotary die cutters;

inspecting the viewed image of the product to determine an accuracy of a print to cut register by using the plurality of networked computers; and

automatically adjusting the cut register of the one of the rotary die cutters so as to adjust the cut to print register.