Pre-cut infeed system

Patent metadata

Field	Value
Publication number	US-11370141-B2
Application number	US-201916726139-A
Country	US
Kind code	B2
Filing date	Dec 23, 2019
Priority date	Feb 22, 2013
Publication date	Jun 28, 2022
Grant date	Jun 28, 2022

Abstract

Embodiments provide a pre-cut infeed system for a machine center, such as an edger. A pre-cut infeed system may include an infeed, one or more saws arranged along the infeed, and a scanner optimizer system. The scanner optimizer system may scan a workpiece and determine whether greater value can be obtained from the workpiece by cutting the workpiece transversely into two or more pieces upstream of the machine center. If so, the workpiece may be cut transversely by the saw(s) positioned along the infeed, and the cut pieces may be fed sequentially into the machine center.

First claim

What is claimed is:

1. A non-transitory computer-readable medium endowed with instructions operable, upon execution by a processor of a computer, to cause the computer to:
determine a first cut pattern for a workpiece based at least on a dimensional model of the workpiece or scan data that corresponds to the workpiece, wherein the first cut pattern defines a cut to be made through the workpiece, along a first predicted cut line that is transverse to a longitudinal axis of the workpiece, by a first cutting device upstream of a machine center to thereby cut the workpiece into pieces as the workpiece is transported on a first conveyor toward a plurality of workpiece lifts operatively coupled with the computer; and
cause the workpiece lifts to move the pieces asynchronously onto a second conveyor, wherein the second conveyor is operable to convey the pieces toward the machine center.

2. The non-transitory computer-readable medium of claim 1 , the instructions further operable, upon execution by the processor, to cause the computer to reposition the first cutting device to cut the workpiece along the transverse cut line while the workpiece is transported on the first conveyor.

3. The non-transitory computer-readable medium of claim 1 , wherein the first cut pattern defines a plurality of first cut products to be cut from the workpiece, and wherein the instructions are operable, upon execution by the processor, to cause the computer to:
determine, based at least on the dimensional model or the scan data, a second cut pattern for the workpiece that defines one or more second cut products, wherein the second cut pattern does not define a transverse cut to be made through the workpiece by the first cutting device; and
select the first cut pattern for implementation.

4. The non-transitory computer-readable medium of claim 3 , wherein the instructions are operable, upon execution by the processor, to cause the computer to:
determine a predicted benefit of the first cut pattern relative to the second cut pattern; and
select the first cut pattern for implementation based at least in part on the predicted benefit.

5. The non-transitory computer-readable medium of claim 4 , wherein the predicted benefit is a difference in throughput volume through the machine center.

6. The non-transitory computer-readable medium of claim 4 , wherein the predicted benefit is an increase in monetary value, and the instructions are operable, upon execution by the processor, to cause the computer to:
determine a first predicted monetary value of the plurality of first cut products;
determine a second predicted monetary value of the one or more second cut products; and
determine, based on a comparison of the predicted monetary values, that the first predicted monetary value exceeds the second predicted monetary value.

7. The non-transitory computer-readable medium of claim 4 , wherein the predicted benefit is an increase in wood volume recovery, and the instructions are operable, upon execution by the processor, to cause the computer to:
determine a first percentage or volume of the workpiece represented by the plurality of first cut products;
determine a second percentage or volume of the workpiece represented by the one or more second cut products; and
compare the predicted percentages or volumes; and
determine, based on the comparison, that the first predicted percentage or volume exceeds the second predicted percentage or volume.

8. The non-transitory computer-readable medium of claim 3 , wherein the instructions are operable, upon execution by the processor, to cause the computer to select the first cut pattern for implementation based at least in part on a distance of the first cutting device from the first predicted cut line, a length of time required to reposition the first cutting device to cut the workpiece along the first predicted cut line, or a length of time required to reposition the first cutting device to cut a successive workpiece according to a corresponding second cut pattern.

9. The non-transitory computer-readable medium of claim 3 , wherein the instructions are operable, upon execution by the processor, to cause the computer to select the first cut pattern for implementation based at least in part on a length of time required to reposition one or more cutting elements or positioning elements of the machine center to cut the pieces according to the first cut pattern.

10. The non-transitory computer-readable medium of claim 1 , wherein the instructions are operable, upon execution by the processor, to cause the computer to determine a location for the first predicted cut line based at least in part on a distance of the first cutting device from the first predicted cut line, a length of time required to reposition the first cutting device to cut the workpiece along the first predicted cut line, or a length of time required to reposition the first cutting device to cut a successive workpiece according to a corresponding second cut pattern.

11. The non-transitory computer-readable medium of claim 1 , wherein the instructions are operable, upon execution by the processor, to cause the computer to determine the first cut pattern based at least in part on a length of time required to reposition one or more cutting elements or positioning elements of the machine center to cut the pieces according to the first cut pattern.

12. The non-transitory computer-readable medium of claim 1 , wherein the instructions are operable, upon execution by the processor, to cause the computer to generate the dimensional model based on the scan data and calculate the first cut solution based on the dimensional model.

13. The non-transitory computer-readable medium of claim 12 , wherein the dimensional model includes geometric characteristics of the workpiece and information about grain angles and/or one or more defects of the workpiece.

14. The non-transitory computer-readable medium of claim 1 , wherein the instructions are operable, upon execution by the processor, to cause the computer to determine, based at least on the dimensional model or the scan data, a benefit of cutting the workpiece transversely upstream of the machine center and to calculate the first cut pattern based at least on the benefit.

15. The non-transitory computer-readable medium of claim 14 , wherein the benefit is a predicted increase in throughput speed through the machine center, wood volume recovery from the workpiece, or monetary value of products to be cut from the workpiece.

16. The non-transitory computer-readable medium of claim 1 , wherein the instructions are operable, upon execution by the processor, to cause the computer to control a plurality of workpiece positioners to thereby move the pieces in respective desired orientations onto the workpiece lifts.

17. The non-transitory computer-readable medium of claim 16 , wherein the instructions are operable, upon execution by the processor, to cause the computer to control some or all of the workpiece positioners independently of one another.

18. The non-transitory computer-readable medium of claim 16 , wherein the instructions are operable, upon execution by the processor, to cause the computer to control a first group of the workpiece positioners independently of a second group of the workpiece positioners.

19. The non-transitory computer-readable medium of claim 1 , wherein the first cutting device includes a plurality of circular saws, and the instructions are operable, upon execution by the processor, to cause the computer to actuate a se

Assignees

• Usnr Llc

Inventors

• Saastamo Petri

Classifications

• G05B2219/35162

  Determine workpiece placement, nesting in blank, optimize, minimize loss material · CPC title

• Y10T83/178

  Responsive to work · CPC title

• G05B2219/36515

  As function of material or pattern direction, nerves of wood for optimal cutting · CPC title

• G05B19/128

  the workpiece itself serves as a record carrier, e.g. by its form, by marks or codes on it · CPC title

• Y10T83/0524

  Plural cutting steps · CPC title