Laser cutting device, control method and control apparatus

Patent metadata

Field	Value
Publication number	US-2020009689-A1
Application number	US-201816316636-A
Country	US
Kind code	A1
Filing date	May 11, 2018
Priority date	Jun 15, 2017
Publication date	Jan 9, 2020
Grant date	—

Abstract

A laser cutting device, a control method and a control apparatus, the device comprising: 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

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.

2 . The laser cutting device according to claim 1 , 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.

3 . The laser cutting device according to claim 2 , wherein 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.

4 . The laser cutting device according to claim 3 , 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.

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

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

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

8 . The laser cutting device according to claim 7 , 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.

9 . A control method applicable to the laser cutting device according to claim 1 , comprising:
controlling the conveying component to convey a substrate to the work table; receiving counting start and stop time points and counted values of the first counter and the second counter; and determining 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 controlling the laser cutter to cut the substrate according to the corrected cutting motion track.

10 . 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.

11 . The control method according to claim 9 , wherein at least two groups of oppositely arranged first counters and second counters are provided;
receiving the counting start and stop time points and the counted values of the first counter and the second counter, comprises: receiving counting start and stop time points and counted values of the at least two groups of oppositely arranged first counters and second counters.

12 . The control method according to claim 11 , wherein determining the corrected cutting motion track of the laser cutter according to the set cutting track, and the counting start and stop time points and the counted values of the first counter and the second counter, comprises:
obtaining 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 determining the corrected cutting motion track of the laser cutter by averaging the plurality of corrected cutting motion tracks.

13 . The control method according to claim 9 , 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.

14 . The control method according to claim 13 , wherein 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.

15 . The control method according to claim 14 , 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.

16 . The control method according to claim 14 , wherein the protective sleeve comprises a rubber protective sleeve or a silicone protective sleeve.

17 . The control apparatus according to claim 10 , 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.

18 . The control apparatus according to claim 17 , 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.

19 . The control apparatus according to claim 10 , 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.

20 . The control apparatus according to claim 19 , wherein 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.

Assignees

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

Inventors

• Liu Ping
• Hu Qingyu
• Kim Yong Sub

Classifications

• B23K26/0876

  in at least two axial directions · CPC title

• B23K26/402

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

• B23K26/38 Primary

  by boring or cutting · CPC title

• B23K2101/40

  Semiconductor devices · CPC title

• B23K26/0344

  Observing the speed of the workpiece · CPC title