WO2023213505A1 - Laserbearbeitungsanlage - Google Patents
Laserbearbeitungsanlage Download PDFInfo
- Publication number
- WO2023213505A1 WO2023213505A1 PCT/EP2023/059475 EP2023059475W WO2023213505A1 WO 2023213505 A1 WO2023213505 A1 WO 2023213505A1 EP 2023059475 W EP2023059475 W EP 2023059475W WO 2023213505 A1 WO2023213505 A1 WO 2023213505A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- laser
- cooling
- processing system
- processing
- laser processing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
- B23K26/703—Cooling arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted for a procedure covered by only one of the other main groups of this subclass
- B23K37/003—Cooling means for welding or cutting
Definitions
- coolants based on ethylene glycol can also be used as coolants.
- these cannot be used in all industrial environments due to their flammability.
- Ethylene glycol also has hygroscopic properties. Therefore, it cannot be ruled out that this coolant will enrich itself over time with diffused water from the ambient air.
- cooling with liquid coolants is cooling with compressed air.
- a switch to a cooling concept based on Compressed air means a redesign of the components to be cooled.
- the cooling channels of the optics and plug connections of laser light cables in existing laser processing systems are neither designed for the ideally required pressure level of air or gas cooling in terms of their cross sections nor their courses. Particularly when connecting laser light cables, a relatively large amount of heat must be dissipated in a very small installation space.
- the cross section of the cooling channels is so small that, especially at high laser powers, sufficient cooling medium can basically only be passed through the component with liquid cooling.
- the invention is therefore based on the object of providing a laser processing system in which reliable cooling of the optical components of the system is guaranteed under all operating conditions.
- a laser processing system with a laser device, at least one processing and / or scanner optics and at least one laser light cable with plug connections, which is characterized in that a cooling circuit is provided, which at least the processing and / or scanner optics and the plug connections of the passes through or protrudes into at least one laser light cable and in which a diorganopolysiloxane circulates as a coolant.
- Diorganopolysiloxane or silicone oil does not contain any water but is hydrophobic.
- diorganopolysiloxanes are chemically inert, non-corrosive, non-flammable, non-electrically conductive, non-toxic and compatible with all common construction materials and sealing materials.
- Other positive properties include their high temperature resistance and a very low freezing point. Silicone oils with different viscosities are also available. These properties enable it to be used as a coolant for almost all laser processing tasks, with the exception of processing workpieces that are later to be coated with paint, for example in car body construction.
- the cooling circuit with diorganopolysiloxane it is possible to use the cooling circuit with diorganopolysiloxane to cool the laser device.
- a separate cooling water circuit can preferably be provided for cooling the laser. This makes it particularly easy to retrofit existing systems that already use water cooling. All you have to do is set up a separate cooling circuit with diorganopolysiloxane for the optical components. The water cooling of the laser can remain.
- the separate cooling circuit can be formed by a cooling device and lines leading back and forth to the optical components, namely the processing and/or scanner optics with plug connections, the laser processing system, the lines being firmly connected to the optical components. If the optical components are replaced, the leaks that inevitably occur when the cooling circuit is opened arise in the area of the cooling device and not in the area of the optical components.
- diorganopolysiloxane has a similar or identical viscosity to water.
- comparable flow conditions arise for the coolant when using a cooling device designed for water.
- a UV-luminous dye can be added to the diorganopolysiloxane. A leak can be found very quickly by irradiating it with UV light.
- Fig. 1 is a schematic representation of a laser processing system with a common cooling circuit for all components
- Fig. 2 is a schematic representation of a separate cooling circuit for optical components of a laser processing system.
- the laser processing system 10 shown in FIG. 1 has a laser device 11 which is equipped with at least one laser (not shown) for providing laser radiation. Furthermore, a processing and/or scanner optics 12 is provided, which is connected to the laser device 11 via a laser light cable 13 and a plug connection 14.
- a processing optics is a device that directs a processing beam to a workpiece
- a scanner optics is a device that directs a scanning beam to a workpiece for monitoring a machining process. It goes without saying that several processing and/or scanner optics 12 can be connected to the laser device 11 in an analogous manner.
- the laser device 11 is cooled via a cooling device 15, which is connected to the laser device 11 via a coolant inlet 16 and a coolant return 17.
- the cooling device 15 not only cools the laser device 11 but also the processing and/or scanner optics 12 and the plug connection 14 via a supply line 17 and a return line 18 between the laser device 11 and the processing and/or scanner optics 12.
- a single cooling circuit is provided for all components, namely laser device 11, processing and/or scanner optics 12 and laser light cable plug connection or plug connection 14 of the laser processing system 10.
- a diorganopolysiloxane circulates in this cooling circuit as a coolant instead of the cooling water usually used to cool laser processing systems.
- the laser device 11 can be cooled as usual with cooling water and a separate cooling device 19 with diorganopolysiloxane as a coolant can also be provided, as shown in FIG. 2.
- the separate cooling device 19 is connected via a supply line 20 and a return line 21 with processing and/or scanner optics 12' and a plug connection 14' for a laser light cable 13 'connected and cools it independently of a laser device, which is shown in Fig.
- FIG. 2 not shown but is connected to the processing and/or scanner optics 12' via the laser light cable 13'.
- the alternative shown in Fig. 2 is particularly suitable for retrofitting existing systems.
- the cooling of the laser device 11 does not need to be changed for this. Only the inlet and return lines 17, 18 (FIG. 1) are removed and a separate cooling device 19 with diorganopolysiloxane as a coolant for the processing and/or scanner optics 12 'and the plug connection 14' is installed.
- processing and/or scanner optics 12' and the plug connection 14' are thoroughly flushed with dry air in order to completely remove any remaining water from the cooling channels.
- processing and/or scanner optics 12' cooled with diorganopolysiloxane should be kept or separated from water-cooled optics in the event of repair, so that no silicone oil is transferred to optics that are subsequently used for machining tasks in which the workpieces are free of grease and oil must.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Lasers (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020247036810A KR20240169699A (ko) | 2022-05-06 | 2023-04-12 | 레이저 가공 시스템 |
| CN202380038732.7A CN119255886A (zh) | 2022-05-06 | 2023-04-12 | 激光加工系统 |
| US18/937,060 US20250058409A1 (en) | 2022-05-06 | 2024-11-05 | Laser processing system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022111262.4 | 2022-05-06 | ||
| DE102022111262.4A DE102022111262A1 (de) | 2022-05-06 | 2022-05-06 | Laserbearbeitungsanlage |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US18/937,060 Continuation US20250058409A1 (en) | 2022-05-06 | 2024-11-05 | Laser processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2023213505A1 true WO2023213505A1 (de) | 2023-11-09 |
Family
ID=86006814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/059475 Ceased WO2023213505A1 (de) | 2022-05-06 | 2023-04-12 | Laserbearbeitungsanlage |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20250058409A1 (de) |
| KR (1) | KR20240169699A (de) |
| CN (1) | CN119255886A (de) |
| DE (1) | DE102022111262A1 (de) |
| WO (1) | WO2023213505A1 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08330660A (ja) * | 1995-05-31 | 1996-12-13 | Sony Corp | レーザ照射装置 |
| DE10202434A1 (de) * | 2002-01-22 | 2003-07-31 | Volkswagen Ag | Vorrichtung zum Kühlen einer Laseranlage |
| US20170329092A1 (en) * | 2016-05-13 | 2017-11-16 | Nlight, Inc. | Double helix coolant path for high power fiber connector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014117095A1 (de) | 2014-11-21 | 2016-05-25 | Rational Aktiengesellschaft | Gargerät mit Kühlkreislauf |
| DE102017215839B4 (de) | 2017-09-07 | 2026-03-26 | Sauer Gmbh | Optikmodul mit Vorrichtung zum automatischen Wechseln einer Kollimationsoptik |
-
2022
- 2022-05-06 DE DE102022111262.4A patent/DE102022111262A1/de active Pending
-
2023
- 2023-04-12 WO PCT/EP2023/059475 patent/WO2023213505A1/de not_active Ceased
- 2023-04-12 KR KR1020247036810A patent/KR20240169699A/ko active Pending
- 2023-04-12 CN CN202380038732.7A patent/CN119255886A/zh active Pending
-
2024
- 2024-11-05 US US18/937,060 patent/US20250058409A1/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08330660A (ja) * | 1995-05-31 | 1996-12-13 | Sony Corp | レーザ照射装置 |
| DE10202434A1 (de) * | 2002-01-22 | 2003-07-31 | Volkswagen Ag | Vorrichtung zum Kühlen einer Laseranlage |
| US20170329092A1 (en) * | 2016-05-13 | 2017-11-16 | Nlight, Inc. | Double helix coolant path for high power fiber connector |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20240169699A (ko) | 2024-12-03 |
| US20250058409A1 (en) | 2025-02-20 |
| DE102022111262A1 (de) | 2023-11-09 |
| CN119255886A (zh) | 2025-01-03 |
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