Laser cutting device, control method and control apparatus

Patent metadata

Field	Value
Publication number	US-11389906-B2
Application number	US-201816316636-A
Country	US
Kind code	B2
Filing date	May 11, 2018
Priority date	Jun 15, 2017
Publication date	Jul 19, 2022
Grant date	Jul 19, 2022

Abstract

A laser cutting device comprises: a conveying mechanism (1) comprising a feeding end and a discharging end; a working platform (2) disposed at the discharging end of the conveying mechanism (1); a first counter (3) and a second counter (4) oppositely disposed at a side of the working platform (2) near the discharging end of the conveying mechanism (1) and driven respectively by two opposite side edges of a substrate (6) to rotate for counting; a laser cutter (5) disposed above the working platform (2); a control device (13) for determining a modified cutting motion path of the laser cutter according to a set cutting path, and starting and ending times of counting values of the first counter (3) and second counter (4), and for controlling the laser cutter to cut the substrate (6) according to the modified cutting motion path.

First claim

The invention claimed is:

1. A laser cutting device, comprising:
a conveying component, comprising a feed end and a discharge end;
a work table, arranged at the discharge end of the conveying component;
a first counter and a second counter, arranged opposite to each other on a side, proximate to the discharge end of the conveying component, of the work table, and respectively driven by two opposite side edges of a conveyed substrate to rotate for counting;
a laser cutter, arranged above the work table; and
a control apparatus, connected with the first counter, the second counter and the laser cutter and configured to determine a corrected cutting motion track of the laser cutter according to a set cutting track, and counting start and stop time points and counted values of the first counter and the second counter, and to control the laser cutter to cut the substrate according to the corrected cutting motion track;
wherein the first counter comprises an absolute value rotary coding counter or an incremental rotary coding counter, and the second counter comprises an absolute value rotary coding counter or an incremental rotary coding counter; and
each of the first counter and the second counter comprises a rotating shaft abutting against a side edge of the substrate, and an outer wall of the rotating shaft is sleeved with a protective sleeve.

2. The laser cutting device according to claim 1 , wherein the rotating shaft is provided with at least one protrusion; and for each of the at least one protrusion, an inner wall of a corresponding protective sleeve is provided with a groove matched with said protrusion.

3. The laser cutting device according to claim 1 , wherein the protective sleeve comprises a rubber protective sleeve or a silicone protective sleeve.

4. The laser cutting device according to claim 1 , wherein at least two groups of oppositely arranged first counters and second counters are provided.

5. The laser cutting device according to claim 1 , wherein the conveying component comprises a plurality of first conveying belts arranged in parallel.

6. The laser cutting device according to claim 5 , wherein the conveying component further comprises a roller arranged on a side of the discharge end, and the roller is able to move and extend to the work table and be retracted to a position below the plurality of first conveying belts.

7. A control apparatus applicable to the laser cutting device according to claim 1 , comprising:
a conveying control element, configured to control the conveying component to convey a substrate to the work table;
a receiving element, configured to receive counting start and stop time points and counted values of the first counter and the second counter; and
a cutting control element, configured to determine a corrected cutting motion track of the laser cutter according to a set cutting track, and the counting start and stop time points and the counted values of the first counter and the second counter, and to control the laser cutter to cut the substrate according to the corrected cutting motion track.

8. The control apparatus according to claim 7 , wherein the receiving element is further configured to receive counting start and stop time points and counted values of at least two groups of oppositely arranged first counters and second counters.

9. The control apparatus according to claim 8 , wherein the cutting control element is further configured to:
obtain a plurality of corrected cutting motion tracks according to the set cutting track, and the counting start and stop time points and the counted values of the at least two groups of oppositely arranged first counters and second counters; and
determine the corrected cutting motion track of the laser cutter by averaging the plurality of corrected cutting motion tracks.

Assignees

• Hefei Xinsheng Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Liu Ping
• Hu Qingyu
• Kim Yong Sub

Classifications

• B23K26/38 Primary

  by boring or cutting · CPC title

• B23K26/702

  Auxiliary equipment · CPC title

• B23K26/402

  involving non-metallic material, e.g. isolators · CPC title

• B23K26/03

  Observing, e.g. monitoring, the workpiece · CPC title

• B23K26/0344

  Observing the speed of the workpiece · CPC title