CN114024190B - Laser output head and laser equipment - Google Patents
Laser output head and laser equipment Download PDFInfo
- Publication number
- CN114024190B CN114024190B CN202111253186.8A CN202111253186A CN114024190B CN 114024190 B CN114024190 B CN 114024190B CN 202111253186 A CN202111253186 A CN 202111253186A CN 114024190 B CN114024190 B CN 114024190B
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- cooling
- laser
- output head
- port
- discharging
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- 238000001816 cooling Methods 0.000 claims abstract description 108
- 239000000463 material Substances 0.000 claims abstract description 78
- 238000007599 discharging Methods 0.000 claims abstract description 50
- 238000002955 isolation Methods 0.000 claims abstract description 20
- 239000013307 optical fiber Substances 0.000 claims abstract description 19
- 238000007789 sealing Methods 0.000 claims description 59
- 238000009434 installation Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000003466 welding Methods 0.000 description 6
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000000112 cooling gas Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000000110 cooling liquid Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229920001774 Perfluoroether Polymers 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- UJMWVICAENGCRF-UHFFFAOYSA-N oxygen difluoride Chemical compound FOF UJMWVICAENGCRF-UHFFFAOYSA-N 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0404—Air- or gas cooling, e.g. by dry nitrogen
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
- H01S3/0071—Beam steering, e.g. whereby a mirror outside the cavity is present to change the beam direction
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0407—Liquid cooling, e.g. by water
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0225—Out-coupling of light
- H01S5/02251—Out-coupling of light using optical fibres
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/024—Arrangements for thermal management
- H01S5/02407—Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/024—Arrangements for thermal management
- H01S5/02407—Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling
- H01S5/02423—Liquid cooling, e.g. a liquid cools a mount of the laser
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/024—Arrangements for thermal management
- H01S5/02438—Characterized by cooling of elements other than the laser chip, e.g. an optical element being part of an external cavity or a collimating lens
Abstract
The invention relates to a laser output head which is used for being installed in a laser device, wherein the laser output head comprises a shell and an isolation assembly, a cooling cavity for accommodating an optical fiber, a feed port and a discharge port are formed in the shell and are communicated with the cooling cavity, the feed port is used for enabling cooling materials to enter the cooling cavity to reduce the temperature of the optical fiber, and the discharge port is used for enabling the cooling materials to be discharged out of the cooling cavity; the isolation assembly is arranged on the shell and is used for being matched with the laser device to separate the feeding hole from the discharging hole.
Description
Technical Field
The present invention relates to the field of laser technology, and in particular, to a laser output head and a laser device.
Background
In the field of laser machining, a laser output head is a critical component that focuses high-energy laser light in an optical fiber onto a workpiece surface. Because high-power laser equipment is needed in the laser processing process, a corresponding cooling structure is needed to be arranged at the laser output head so as to avoid the damage of the laser output head caused by high temperature generated by laser.
The traditional laser output head generally can select cooling liquid or cooling gas to cool down the laser output head, but the cooling liquid or cooling gas is difficult to accurately input into the laser output head, so that the cooling effect of the laser output head is poor.
Disclosure of Invention
In view of the above, it is necessary to provide a laser output head and a laser apparatus.
A laser output head for installation into a laser device, the laser output head comprising:
The shell is provided with a cooling cavity for accommodating the optical fiber, a feeding port and a discharging port, wherein the feeding port and the discharging port are communicated with the cooling cavity, the feeding port is used for enabling cooling materials to enter the cooling cavity for cooling, and the discharging port is used for enabling the cooling materials to be discharged out of the cooling cavity;
The isolation assembly is arranged on the shell and is used for being matched with the laser device to separate the feeding hole from the discharging hole.
Above-mentioned laser output head, when it is installed to laser device in, the isolation component on the casing and the cooperation of laser device can separate the pan feeding mouth and the discharge gate on casing surface to guarantee that the cooling material can get into the cooling chamber of casing by the discharge gate again along the pan feeding mouth and discharge, avoid originally leaking to the discharge gate place along the clearance of laser device and laser output head by the cooling material of pan feeding mouth entering cooling chamber, also avoided leaking to the place of pan feeding mouth along the clearance of laser device and laser output head by the discharged cooling material of discharge gate simultaneously. In other words, the unidirectional circulation of cooling material has been guaranteed in isolation component's setting for the cooling material can be accurate high-efficient business turn over cooling chamber, has improved the cooling efficiency of cooling material to the casing.
In one embodiment, the isolation assembly comprises a first sealing ring sleeved on the shell, wherein the first sealing ring is located between the feeding port and the discharging port and is used for being in butt fit with the inner surface of the laser device so as to separate the feeding port from the discharging port. When the laser output head is installed in the laser device, the first sealing ring abuts against the inner surface of the laser device to separate the feeding port from the discharging port.
In one embodiment, the isolation assembly further comprises a second sealing ring and a third sealing ring which are sleeved on the shell and are in butt fit with the inner surface of the laser device, the second sealing ring is located at one side, far away from the first sealing ring, of the feeding hole, and the third sealing ring is located at one side, far away from the first sealing ring, of the discharging hole. The first sealing ring and the second sealing ring can seal gaps between the laser devices on two sides of the feeding hole and the shell of the laser output head, the first sealing ring and the third sealing ring can seal gaps between the laser devices on two sides of the discharging hole and the shell of the laser output head, and when cooling materials enter the cooling cavity from the feeding hole of the shell and are discharged from the discharging hole, the arrangement of the structure can ensure that the cooling materials cannot permeate between the gaps between the laser devices and the laser output head, so that the flow speed and the cooling efficiency of the cooling materials are further improved.
In one embodiment, a first limit groove is formed on the outer surface of the shell, the first limit groove is located between the feeding hole and the discharging hole, the first seal ring is embedded in the first limit groove, and the first limit groove is in limit fit with the first seal ring to limit the first seal ring to move in the axial direction of the shell. The first limiting groove is arranged to be favorable for fixing the relative position of the first sealing ring and the shell, so that the first sealing ring is prevented from generating position deviation, and the separation of the feeding hole and the discharging hole is ensured.
In one embodiment, the first limiting groove extends in a ring shape along the circumferential direction of the shell. The groove wall of the first limit groove can be better utilized to generate better limit and fixing effects on the first sealing ring through the structure.
In one embodiment, the outer surface of the shell is provided with a feeding guide groove and a discharging guide groove which are not communicated with each other, the feeding guide groove is communicated with the feeding port, the discharging guide groove is communicated with the discharging port, the feeding guide groove is used for guiding the cooling material to move along the feeding guide groove and enter the feeding port, and the discharging guide groove is used for guiding the cooling material discharged by the discharging port to move along the discharging guide groove.
In one embodiment, the feeding guide groove and the discharging guide groove are both annular along the circumferential direction of the shell.
In one embodiment, at least one of the following features is included:
The feeding port and the discharging port are positioned on two opposite sides of the shell;
The laser output head further comprises a heat conduction piece arranged in the cooling cavity, wherein an optical fiber cavity is formed in the heat conduction piece and used for accommodating the optical fiber.
The application also relates to laser equipment, which comprises a laser device and the laser output head according to any one of the embodiments, wherein a mounting cavity, a feeding pipeline and a discharging pipeline are arranged in the laser device, the mounting cavity is used for accommodating the laser output head, the feeding pipeline is used for being communicated with a feeding port of the laser output head so as to input the cooling material into the feeding port, and the discharging pipeline is used for being communicated with a discharging port of the laser output head so as to receive the cooling material discharged from the discharging port.
Above-mentioned laser equipment, when its laser output head was installed to laser device in, the isolation component on the casing was separated with laser device cooperation can be with the pan feeding mouth and the discharge gate on casing surface to guarantee that laser device's pan feeding pipeline can be with the cooling intracavity of cooling material along the pan feeding mouth input casing, the discharge pipeline can accept by the cooling material of discharge gate exhaust. Such structure sets up can avoid originally getting into the cooling chamber by the pan feeding mouth and leak to the discharge gate place along laser device and laser output head's clearance, has also avoided simultaneously by discharge gate exhaust cooling material along laser device and laser output head's clearance leak to the place of pan feeding mouth. In other words, the unidirectional circulation of cooling material has been guaranteed in isolation component's setting for the cooling material can be accurate high-efficient business turn over cooling chamber, has improved the cooling efficiency of cooling material to the casing.
In one embodiment, the laser device is further provided with a gun barrel communicated with the discharging pipeline, and the gun barrel is used for spraying the cooling material from a gun port of the gun barrel.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or the conventional techniques of the present application, the drawings required for the descriptions of the embodiments or the conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort for those skilled in the art.
FIG. 1 is a perspective view of a laser output head according to one embodiment of the present invention;
FIG. 2 is a cross-sectional view of the laser output head of the embodiment shown in FIG. 1;
FIG. 3 is a schematic diagram of a laser device according to an embodiment of the present invention;
FIG. 4 is a partial cross-sectional view of a laser device according to one embodiment of the present invention, wherein no laser output head is mounted within the laser device;
fig. 5 is a partial cross-sectional view of a laser apparatus in which a laser output head has been installed, according to one embodiment of the present invention.
Reference numerals:
10. A laser device; 11. a laser output head; 100. a housing; 110. a feed inlet; 120. a discharge port;
130. A cooling chamber; 141. a first limit groove; 142. the second limit groove; 143. a third limit groove;
151. A feeding guide groove; 152. a discharge guide groove; 200. an isolation assembly; 201. a first seal ring;
202. A second seal ring; 203. a third seal ring; 300. a heat conductive member; 310. an optical fiber cavity; 12. a laser device; 121. a feeding pipeline; 122. a discharge pipe; 123. a mounting cavity; 124. a barrel;
20. An optical fiber.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1 and 2, in one embodiment, a laser output head 11 is provided for installation into a laser device 12, comprising a housing 100 and an isolation assembly 200. The shell 100 is provided with a cooling cavity 130 for accommodating the optical fiber 20, a feed inlet 110 and a discharge outlet 120 which are communicated with the cooling cavity 130, the feed inlet 110 is used for allowing cooling materials to enter the cooling cavity 130 for cooling, and the discharge outlet 120 is used for allowing the cooling materials to be discharged out of the cooling cavity 130. The laser device 12 is internally provided with a mounting cavity 123, a feeding pipeline 121 and a discharging pipeline 122, wherein the mounting cavity 123 is used for accommodating the laser output head 11, the feeding pipeline 121 is used for being communicated with a feeding port 110 of the laser output head 11 so as to input cooling materials into the feeding port 110, and the discharging pipeline 122 is used for being communicated with a discharging port 120 of the laser output head 11 so as to receive the cooling materials discharged from the discharging port 120. The isolation assembly 200 is disposed on the housing 100, and the isolation assembly 200 is configured to cooperate with the laser device 12 to isolate the inlet 110 from the outlet 120.
The cooling material may be water, oil, liquid nitrogen or other liquid, argon, nitrogen or other gas. The laser device 12 may be a hand-held laser welding head, a hand-held laser welding gun, a hand-held laser cutting head, a hand-held laser cleaning head, or the like.
When the laser output head 11 is installed in the laser device 12, the isolating component 200 on the housing 100 cooperates with the laser device 12 to separate the feed inlet 110 and the discharge outlet 120 on the surface of the housing 100, so as to ensure that the cooling material can enter the cooling cavity 130 of the housing 100 along the feed inlet 110 and then be discharged by the discharge outlet 120, so that the cooling material entering the cooling cavity 130 from the feed inlet 110 is prevented from leaking to the position of the discharge outlet 120 along the gap between the laser device 12 and the laser output head 11, and meanwhile, the cooling material discharged from the discharge outlet 120 is prevented from leaking to the position of the feed inlet 110 along the gap between the laser device 12 and the laser output head 11. In other words, the isolation assembly 200 ensures unidirectional circulation of the cooling material, so that the cooling material can precisely and efficiently enter and exit the cooling cavity 130, and the cooling efficiency of the cooling material on the housing 100 is improved.
Referring to fig. 1 and 2, in one embodiment, the isolation assembly 200 includes a first sealing ring 201 sleeved on the housing 100, where the first sealing ring 201 is located between the feed inlet 110 and the discharge outlet 120, and is used to be in abutting engagement with an inner surface of the laser device 12 to isolate the feed inlet 110 from the discharge outlet 120. The first seal ring 201 is in contact engagement with the inner surface of the laser device 12, and it can be considered that the outer peripheral surface of the first seal ring 201 is in contact with the inner surface of the laser device 12 to be in close contact therewith, and the inner peripheral surface of the first seal ring 201 is in contact with the outer surface of the case 100 to be in close contact therewith. When the laser output head 11 is installed in the laser device 12, it can be considered that the first sealing ring 201 cooperates with the laser device 12 on the outer surface of the housing 100 to divide the inlet 110 and the outlet 120 on the outer surface of the housing 100 into two independent areas. Such a structural arrangement prevents the flow of cooling material between the inlet 110 and the outlet 120 along the gap between the laser device 12 and the laser output head 11 outside the housing 100.
Further, in the embodiment shown in fig. 2, the isolation assembly 200 further includes a second seal ring 202 and a third seal ring 203 that are sleeved on the housing 100 and are configured to be in abutting engagement with the inner surface of the laser device 12. The second sealing ring 202 is located at a side of the feed inlet 110 away from the first sealing ring 201, and the third sealing ring 203 is located at a side of the discharge outlet 120 away from the first sealing ring 201. The second seal ring 202, the first seal ring 201, and the third seal ring 203 may be considered to be sequentially sleeved on the housing 100 along the axial direction of the housing 100, that is, may take the form of a three-ring two-port. The first sealing ring 201 and the second sealing ring 202 can seal the gap between the laser devices 12 on two sides of the feed inlet 110 and the shell 100 of the laser output head 11, the first sealing ring 201 and the third sealing ring 203 can seal the gap between the laser devices 12 on two sides of the discharge outlet 120 and the shell 100 of the laser output head 11, and when cooling materials enter the cooling cavity 130 from the feed inlet 110 of the shell 100 and are discharged from the discharge outlet 120, the structural arrangement can ensure that the cooling materials cannot permeate between the gaps of the laser devices 12 and the laser output head 11, and further improve the flow speed and cooling efficiency of the cooling materials. The manner of abutting and matching the second seal ring 202 and the third seal ring 203 with the inner surface of the laser device 12 may refer to the manner of abutting and matching the first seal ring 201 with the inner surface of the laser device 12, which is not described herein.
Optionally, the first sealing ring 201, the second sealing ring 202 and the third sealing ring 203 may be made of polytetrafluoroethylene, ultra-high temperature perfluoro ether, and other materials, and have certain elasticity while resisting high temperature.
In some embodiments, the size of the mounting cavity 123 of the laser device 12 may be slightly larger than the housing 100 of the laser output head 11, that is, when the laser output head 11 is mounted in the mounting cavity 123 of the laser device 12, there is a certain gap between the inner surface of the laser device 12 and the housing 100, and the gap is set to enable the first sealing ring 201 to deform under the compression of the inner surface of the laser device 12 and the outer surface of the housing 100 to play a sealing role, so as to better separate the feed port 110 and the discharge port 120.
Referring to fig. 1 and 2, a first limiting groove 141 is formed on the outer surface of the housing 100, and the first limiting groove 141 is located between the inlet 110 and the outlet 120. The first sealing ring 201 is embedded in the first limiting groove 141, that is, the first sealing ring 201 is at least partially located in the first limiting groove 141. The first limiting groove 141 limits the movement of the first sealing ring 201 in the axial direction of the housing 100 by being in limiting fit with the first sealing ring 201. The first limiting groove 141 is beneficial to fixing the relative position of the first sealing ring 201 and the shell 100, avoiding the first sealing ring 201 from generating position deviation, and ensuring the separation of the feed inlet 110 and the discharge outlet 120.
Specifically, in the embodiment shown in fig. 1, the first limiting groove 141 extends in a ring shape along the circumferential direction of the housing 100. The groove wall of the first limiting groove 141 can be better utilized to generate better limiting and fixing effects on the first sealing ring 201 through the structural arrangement.
Further, in some embodiments, the outer surface of the housing 100 may further be provided with a second limiting groove 142 and a third limiting groove 143, where the second limiting groove 142 is located on a side of the feed inlet 110 away from the first limiting groove 141, and the third limiting groove 143 is located on a side of the discharge outlet 120 away from the first limiting groove 141. The second limiting groove 142, the first limiting groove 141 and the third limiting groove 143 may be considered to be sequentially distributed on the outer surface of the housing 100 along the axial direction of the housing 100, where the first limiting groove 141 corresponds to the first sealing ring 201, the second limiting groove 142 corresponds to the second sealing ring 202, and the third limiting groove 143 corresponds to the third sealing ring 203. Similarly, the second seal ring 202 is embedded in the second limiting groove 142, and the second limiting groove 142 can abut against the second seal ring 202 through the groove wall to limit the movement of the second seal ring 202 in the axial direction of the housing 100; the third sealing ring 203 is embedded in the third limiting groove 143, and the third limiting groove 143 can abut against the third sealing ring 203 through a groove wall to limit the movement of the third sealing ring 203 in the axial direction of the housing 100.
It should be noted that the words "first", "second", "third", etc. do not indicate or imply that the sealing ring or the limiting groove must have a fixed number. In some embodiments, the first sealing ring 201 may be provided in a plurality, that is, a plurality of first sealing rings 201 may be sleeved between the feed inlet 110 and the discharge outlet 120 of the housing 100, so that the feed inlet 110 and the discharge outlet 120 are better separated from the outer surface of the housing 100, and the flow direction of the cooling material is further ensured. In some embodiments, the number of second seal rings 202 and third seal rings 203 may also be multiple, and such a structural arrangement may further ensure that cooling material does not penetrate between the gap of the laser device 12 and the laser output head 11.
Similarly, the first limiting grooves 141, the second limiting grooves 142 and the third limiting grooves 143 on the housing 100 of the laser output head 11 may be formed into a plurality of first limiting grooves 141 corresponding to one first sealing ring 201, each second limiting groove 142 corresponding to one second sealing ring 202, and each third limiting groove 143 corresponding to one third sealing ring 203.
Referring to fig. 1 and 2, a feeding guiding groove 151 and a discharging guiding groove 152, which are not communicated with each other, are formed on the outer surface of the housing 100, the feeding guiding groove 151 is communicated with the feeding opening 110, and the discharging guiding groove 152 is communicated with the discharging opening 120. The feed guide groove 151 is used for guiding the cooled material to move along the feed guide groove 151 into the feed inlet 110, and the discharge guide groove 152 is used for guiding the cooled material discharged from the discharge outlet 120 to move along the discharge guide groove 152 to enter the laser device 12.
Specifically, in the embodiment shown in fig. 1, the inlet guide groove 151 and the outlet guide groove 152 each extend in a ring shape along the circumferential direction of the housing 100. By adopting the structure, on one hand, the requirement of assembly precision is reduced, and when a user installs the laser output head 11 into the laser device 12, even if the user does not completely align the feed inlet 110 on the shell 100 with the orifice of the feed pipe 121 of the laser device 12, the cooling material in the feed pipe 121 can flow to the feed inlet 110 along the feed guide groove 151 on the shell 100 and finally flow into the cooling cavity 130; similarly, even if the user does not properly align the discharge port 120 on the housing 100 with the orifice of the discharge conduit 122 of the laser device 12, the cooled material discharged from the discharge port 120 may flow along the discharge guide 152 toward the orifice of the discharge conduit 122 and eventually into the discharge conduit 122 of the laser device 12.
In other embodiments, the feed guide groove 151 and the discharge guide groove 152 may also be open-loop, i.e., not present a complete closed loop.
In other embodiments, the inlet guide groove 151 and the outlet guide groove 152 may also spiral along the outer circumferential surface of the housing 100.
The shapes of the groove cross sections of the feeding guide groove 151 and the discharging guide groove 152 may include, but are not limited to, U-shape, V-shape, rectangular shape, and the like.
Referring to fig. 2, in some embodiments, the laser output head 11 further includes a heat conducting member 300 disposed in the cooling cavity 130, and an optical fiber cavity 310 is formed in the heat conducting member 300, where the optical fiber cavity 310 is used to accommodate the optical fiber 20.
Specifically, the heat conductive member 300 may be a metal heat conductive member 300 such as copper or copper alloy. The cavity for the cooling material to pass through is formed between the heat conducting member 300 and the inner surface of the housing 100, which can prevent the cooling material from directly flowing over the surface of the optical fiber 20 to affect the normal propagation of the laser light in the optical fiber 20. The scattered light of the optical fiber 20 in the optical fiber cavity 310 is projected onto the heat conducting member 300, and the generated heat is absorbed by the heat conducting member 300 and then is conducted to the cooling material flowing through the cooling cavity 130, namely, the heat of the heat conducting member 300 is carried away by continuously introducing the cooling material so as to realize cooling.
Referring to fig. 1 and 2, in one embodiment, the inlet 110 and the outlet 120 are located on opposite sides of the housing 100. By the structural arrangement, the cooling material flowing in from the feed inlet 110 is facilitated to flow through the cooling cavity 130 fully and then is discharged from the discharge outlet 120, so that more heat is taken away, and the temperature of the laser output head 11 is effectively reduced.
Referring to fig. 3 to 5, the present application further relates to a laser apparatus 10, which includes a laser device 12 and a laser output head 11 according to any of the above embodiments. The laser device 12 is provided with an installation cavity 123, a feeding pipeline 121 and a discharging pipeline 122. The mounting cavity 123 is adapted in shape and size to the housing 100 of the laser output head 11, the mounting cavity 123 is for mounting the laser output head 11, the feed conduit 121 is for communicating with the feed port 110 of the laser output head 11 to feed cooled material into the feed port 110, and the discharge conduit 122 is for communicating with the discharge port 120 of the laser output head 11 to receive cooled material discharged from the discharge port 120.
In the above-mentioned laser apparatus 10, when the laser output head 11 is installed in the laser device 12, the isolating component 200 on the housing 100 cooperates with the laser device 12 to isolate the material inlet 110 and the material outlet 120 on the surface of the housing 100, so as to ensure that the material inlet pipe 121 of the laser device 12 can input the cooling material into the cooling cavity 130 of the housing 100 along the material inlet 110, and the material outlet pipe 122 can receive the cooling material discharged from the material outlet 120. Such a structural arrangement prevents the cooled material that would have entered the cooling chamber 130 from the feed opening 110 from leaking along the gap between the laser device 12 and the laser output head 11 to the discharge opening 120, and also prevents the cooled material discharged from the discharge opening 120 from leaking along the gap between the laser device 12 and the laser output head 11 to the feed opening 110. In other words, the isolation assembly 200 ensures unidirectional circulation of the cooling material, so that the cooling material can precisely and efficiently enter and exit the cooling cavity 130, and the cooling efficiency of the cooling material on the housing 100 is improved.
In some embodiments, the laser output head 11 may be connected to the laser device 12 by a removable connection such as a screw connection, a snap connection, or the like, which facilitates maintenance or replacement of the device. In other embodiments, the laser output head 11 and the laser device 12 may be integrally formed.
In some embodiments, the infeed conduit 121 and outfeed conduit 122 may refer to components that were previously separately fabricated and then implanted within the interior of the laser device 12 after fabrication. Optionally, the material used to make the feeding pipe 121 and the discharging pipe 122 may include, but is not limited to, metal materials such as aluminum alloy, brass, and other nonmetallic materials.
In one embodiment, the laser device 12 is further provided with a barrel 124 in communication with the discharge conduit 122, the barrel 124 being adapted to eject cooled material from a muzzle of the barrel 124. The laser apparatus 10 may be a laser welding gun, for example, when the cooling material is a cooling gas such as argon or nitrogen, and when a user needs to process a target object by holding the laser welding gun to emit laser, the cooling gas can be sprayed from the muzzle of the gun barrel 124 and cover the periphery of the target object at the same time to isolate oxygen, prevent smoke or splash particles from damaging the lens of the welding gun, and the like. Compared with the traditional laser processing mode, the laser welding gun can realize synchronous laser processing and auxiliary gas application, and is more convenient to operate.
In the description of the present invention, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
The terms "mounted," "connected," and the like are to be construed broadly and may be, for example, mechanically or electrically connected; the two parts can be fixedly connected, detachably connected or integrated; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
It will be understood that when an element is referred to as being "disposed," "disposed," or "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
In the description of the present invention, it should be understood that the terms "upper", "lower", "length", "width", "thickness", "axial", "radial", "circumferential", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
In the description of the present specification, the descriptions of the terms "one embodiment," "other implementation," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Claims (7)
1. A laser output head for installation into a laser device, comprising:
The shell is provided with a cooling cavity for accommodating the optical fiber, a feeding port and a discharging port, wherein the feeding port and the discharging port are communicated with the cooling cavity, the feeding port is used for enabling cooling materials to enter the cooling cavity for cooling, and the discharging port is used for enabling the cooling materials to be discharged out of the cooling cavity;
The isolation assembly is arranged on the shell and is used for being matched with the laser device to separate the feeding hole from the discharging hole, the isolation assembly comprises a first sealing ring sleeved on the shell, the first sealing ring is positioned between the feeding hole and the discharging hole and is used for being matched with the inner surface of the laser device in an abutting mode to separate the feeding hole from the discharging hole, the isolation assembly further comprises a second sealing ring and a third sealing ring sleeved on the shell and used for being matched with the inner surface of the laser device in an abutting mode, the second sealing ring is positioned on one side, away from the first sealing ring, of the feeding hole, and the third sealing ring is positioned on one side, away from the first sealing ring, of the discharging hole;
The outer surface of the shell is provided with a feeding guide groove and a discharging guide groove which are not communicated with each other, the feeding guide groove is communicated with the feeding port, the discharging guide groove is communicated with the discharging port, the feeding guide groove and the discharging guide groove are all annular along the circumferential extension of the shell, the feeding guide groove is used for guiding the cooling material to move along the feeding guide groove and enter the feeding port, and the discharging guide groove is used for guiding the cooling material discharged by the discharging port to move along the discharging guide groove.
2. The laser output head according to claim 1, wherein a first limit groove is formed on an outer surface of the housing, the first limit groove is located between the feed inlet and the discharge outlet, the first seal ring is embedded in the first limit groove, and the first limit groove is in limit fit with the first seal ring to limit movement of the first seal ring in an axial direction of the housing.
3. The laser output head of claim 2, wherein the first limiting groove extends in a ring shape along a circumferential direction of the housing.
4. A laser output head according to any one of claims 1 to 3, wherein the feed port and the discharge port are located on opposite sides of the housing.
5. A laser output head according to any one of claims 1 to 3, further comprising a thermally conductive member disposed within the cooling chamber, the thermally conductive member having an optical fiber cavity disposed therein for receiving the optical fiber.
6. A laser device, comprising a laser unit and a laser output head according to any one of claims 1 to 5, wherein a mounting cavity, a feed pipe and a discharge pipe are provided in the laser unit, the mounting cavity is used for accommodating the laser output head, the feed pipe is used for communicating with a feed port of the laser output head to input the cooling material into the feed port, and the discharge pipe is used for communicating with a discharge port of the laser output head to receive the cooling material discharged from the discharge port.
7. The laser apparatus of claim 6, wherein said laser device is further provided with a barrel in communication with said discharge conduit, said barrel for ejecting said cooled material from a muzzle of said barrel.
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| CN202111253186.8A CN114024190B (en) | 2021-10-27 | 2021-10-27 | Laser output head and laser equipment |
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| CN202111253186.8A CN114024190B (en) | 2021-10-27 | 2021-10-27 | Laser output head and laser equipment |
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| CN114024190A (en) | 2022-02-08 |
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