Apparatus for making a surface treating article

• US 7,182,682 B2
• Filed: 09/08/2004
• Issued: 02/27/2007
• Est. Priority Date: 06/30/2000
• Status: Expired due to Fees

• Current Assignee: 3M Innovative Properties Company (3M Company)
• Original Assignee: 3M Innovative Properties Company (3M Company)
• Inventors: Fritz, Peter J., Malaske, James W., Devaney, Douglas E., McKay, Bradley S., Elgin, Darla A., Livermore, Bruce W., Richtman, Paul J., Fry, Richard L., Bates, Michael S., Conwell, Stanley L.
• Primary Examiner(s): Shakeri; Hadi
• Application Number:
  US10/936,419
• Publication Number:
  US 20050064056A1
• Time in Patent Office: 902 Days
• Field of Search: 451/65, 451/69, 451/5, 451/6, 451 8- 11, 451/539, 493/22, 156/73.5, 156349-351, 156/353, 156/522, 483/22, 297/03, 297/11, 297/12, 297/91, 29795-797, 264/400, 264/153, 264/160, 435/174.4
• US Class Current: 451/539
• CPC Class Codes: B23B 31/11 Retention by threaded connection
• CPC Class Codes: B24B 45/00 Means for securing grinding wheels on rotary arbors suppression of vibrations in systems F16F15/00; testing static or dynamic balancing of machines G01M1/00
• CPC Class Codes: B24D 11/008 Finishing manufactured abrasive sheets, e.g. cutting, deforming
• CPC Class Codes: B24D 13/20 Mountings for the wheels
• CPC Class Codes: B24D 18/0036 by winding up abrasive bands
• CPC Class Codes: B24D 7/16 Bushings; Mountings
• CPC Class Codes: Y10T 156/1343 Cutting indefinite length web after assembly with discrete article
• CPC Class Codes: Y10T 29/53013 Computer input
• CPC Class Codes: Y10T 29/53417 Means to fasten work parts together

Abstract

An apparatus for making a surface treating article, and in one embodment for making a plurality of surface treating articles. The apparatus includes an attaching means for attaching a fastener to a surface treating web and a cutting means for cutting the web around the fastener to provide a surface treating article. In one embodiment, a sensor, such as a machine vision system, senses a position of the fastener on the web, with this sensed position being used to direct operation of the cutting means.

Claims

1. An apparatus for making surface treating article, comprising

a) attaching means for attaching fasteners to a surface treating web;

b) a machine vision system to sense a position of the first fastener and a position of the second fastener, wherein a position of the third fastener is determined relative to the positions of the first fastener and the second fastener; and

e) cutting means for cutting the surface treating web around each fastener to provide surface treating articles.

2. The apparatus for making surface treating articles of claim 1, wherein the cutting means is adapted to effectuate laser cutting of the surface treating web based upon a reference to a location of one of the fasteners relative to the web.

3. The apparatus for making surface treating articles of claim 1, wherein the cutting means is adapted to effectuate laser cutting of the surface treating web based upon a reference to a surface of one of the fasteners.

4. The apparatus for making surface treating articles of claim 1, wherein the cutting means includes a laser control system for controlling operation of a laser based upon reference to the determined positions of the fasteners.

5. The apparatus for making surface treating articles of claim 4, wherein the machine vision system is adapted to sense a surface feature of the fasteners and determine a position of the fasteners relative to the web based upon the sensed surface feature.

6. The apparatus for making surface treating articles of claim 5, wherein the machine vision system is further adapted to determine a position of a center of the fasteners based upon the sensed surface feature.

7. The apparatus for making surface treating articles of claim 6, wherein the laser control system is adapted to effectuate laser cutting of the surface treating web around the fasteners based upon reference to the determined center position of the fasteners.

8. The apparatus for making surface treating articles of claim 4, wherein the cutting means is adapted to initiate a laser cutting operation after the position of the fasteners relative to the web has been determined and then to complete a cut pattern around a periphery of each of the fasteners without further reference to information from the machine vision system.

9. The apparatus for making surface treating articles of claim 1, wherein the machine vision system is adapted to determine a position of the fastener based upon identification of a surface of the fastener.

10. The apparatus for making surface treating articles of claim 1, wherein the machine vision system is characterized by the absence of an ability to determine a location of a laser beam upon the web.

11. The apparatus for making surface treating articles of claim 1, wherein the cutting means is adapted to perform a partial cut through a thickness of the web.

12. The apparatus for making surface treating articles of claim 11, further comprising:

a separation station downstream of the cutting means, the separation station adapted to remove a partially cut surface treating article from the web.

13. An apparatus for making a plurality of surface treating articles, comprising:

a) a spinwelder for attaching a plurality of fasteners to a surface treating web, wherein each of the plurality of fasteners is located in a predetermined position forming an array of fasteners, and wherein the plurality of fasteners includes a first fastener, a second fastener, and a third fastener;

b) a machine vision system to sense a position of the first fastener and a position of the second fastener, wherein a position of the third fastener is determined relative to the positions of the first fastener and the second fastener; and

c) a laser to cut the surface treating web around each fastener to provide a surface treating article with a fastener theron.

14. The apparatus for making a plurality of surface treating articles of claim 13, further including:

d) a web carrier for advancing the surface treating web.

15. The apparatus for making a surface treating article of claim 13, further including:

(d) a laser control system for controlling operation of the laser based upon the sensed position of the fastener.