CN110508942B - Laser cutting head and laser processing equipment - Google Patents
Laser cutting head and laser processing equipment Download PDFInfo
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- CN110508942B CN110508942B CN201910843853.4A CN201910843853A CN110508942B CN 110508942 B CN110508942 B CN 110508942B CN 201910843853 A CN201910843853 A CN 201910843853A CN 110508942 B CN110508942 B CN 110508942B
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- collimating
- water inlet
- water outlet
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- 238000003698 laser cutting Methods 0.000 title claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 221
- 238000001816 cooling Methods 0.000 claims abstract description 118
- 230000001681 protective effect Effects 0.000 claims abstract description 65
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 17
- 238000004804 winding Methods 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 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
- 238000009826 distribution Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000289 melt material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
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- 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
- B23K26/04—Automatically aligning, aiming or focusing the laser beam, e.g. using the back-scattered light
- B23K26/046—Automatically focusing the laser beam
-
- 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
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- 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
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a laser cutting head and laser processing equipment, and belongs to the technical field of laser cutting. The laser processing apparatus includes a laser cutting head. The laser cutting head comprises a water cooling channel, wherein the water cooling channel comprises a main water inlet cooling channel, a main water outlet cooling channel and a collimating lens branch channel. The main water inlet cooling channel sequentially penetrates through the upper protective lens assembly, the collimating lens assembly, the focusing lens assembly and the lower protective lens assembly. The main water outlet cooling channel sequentially penetrates through the upper protective lens assembly, the collimating lens assembly, the focusing lens assembly and the lower protective lens assembly, and the water outlet of the main water inlet cooling channel is connected with the water inlet of the main water outlet cooling channel. The collimating mirror assembly comprises a collimating up-down moving ring, the collimating mirror branch channel is arranged in the collimating up-down moving ring, a water inlet of the collimating mirror branch channel is communicated with the main water inlet cooling channel, and a water outlet of the collimating mirror branch channel is communicated with the main water outlet cooling channel. The invention has better integral cooling effect, thereby being applicable to high-power laser cutting heads.
Description
Technical Field
The invention relates to the technical field of laser cutting, in particular to a laser cutting head and laser processing equipment.
Background
The laser cutting machine cuts a workpiece by utilizing laser beams, and the main principle is that the energy of the laser is concentrated into a high-density beam in a light mode, the beam is transmitted to a working surface to generate enough energy to melt materials so as to achieve the purposes of cutting and engraving, and the laser cutting machine has the characteristics of high precision, high cutting speed, no limitation of cutting patterns, automatic typesetting, material saving, smooth cutting, low processing cost and the like, and is widely applied in recent years.
The laser cutting head is an important component part of the laser cutting machine, the laser cutting head on the market at present mainly concentrates in medium and low power, the larger the power of the laser cutting head is, the larger the thickness of the corresponding metal sheet which can be cut is, and therefore, the demand on the laser cutting head with high power on the market is larger. However, the greater the power of the laser cutting head, the more serious the heating of the lens in the laser cutting head, the poor the cooling effect of the existing laser cutting head, reducing the service life of the lens, and being unfavorable for the smooth proceeding of the cutting of the laser cutting head.
Therefore, a laser cutting head is needed to solve the problem of lens cooling.
Disclosure of Invention
An object of the present invention is to provide a laser cutting head in which the cooling effect of the lens is good, so that it can be applied to high-power working occasions.
Another object of the present invention is to provide a laser processing apparatus capable of reducing heat generation of a lens, thereby being capable of being used for processing of thicker parts.
To achieve the purpose, the invention adopts the following technical scheme:
The laser cutting head comprises an upper protective lens assembly, a collimating lens assembly, a focusing lens assembly, a lower protective lens assembly and a nozzle follow-up assembly which are sequentially arranged from top to bottom, and further comprises a water cooling channel, wherein the water cooling channel comprises a main water inlet cooling channel, a main water outlet cooling channel and a collimating lens branch channel;
the main water inlet cooling channel sequentially penetrates through the upper protective lens assembly, the collimating lens assembly, the focusing lens assembly and the lower protective lens assembly, and a main water inlet communicated with the main water inlet cooling channel is formed in the upper protective lens assembly;
the main water outlet cooling channel sequentially penetrates through the upper protective lens assembly, the collimating lens assembly, the focusing lens assembly and the lower protective lens assembly, a main water outlet communicated with the main water outlet cooling channel is arranged on the upper protective lens assembly, and the water outlet of the main water inlet cooling channel is connected with the water inlet of the main water outlet cooling channel in the lower protective lens assembly;
the collimating mirror assembly comprises a collimating up-and-down moving ring, the collimating mirror branch channel is arranged in the collimating up-and-down moving ring, a water inlet of the collimating mirror branch channel is communicated with the main water inlet cooling channel, and a water outlet of the collimating mirror branch channel is communicated with the main water outlet cooling channel.
Preferably, the upper collimating lens branch channel is arranged above the collimating upper and lower moving ring and the lower collimating lens straight channel is arranged below the collimating upper and lower moving ring, and the upper collimating lens branch channel is communicated with the lower collimating lens branch channel.
Preferably, the focusing lens assembly comprises a focusing lens adjusting seat, the water cooling channel further comprises a focusing lens branch channel wound on the focusing lens adjusting seat, a water inlet of the focusing lens branch channel is communicated with the main water inlet cooling channel, and a water outlet of the focusing lens branch channel is communicated with the main water outlet cooling channel.
Preferably, the focusing lens adjusting seat comprises a focusing lens adjusting seat body and a focusing lens adjusting seat upper cover, a step surface is arranged on the outer surface of the focusing lens adjusting seat body, the focusing lens adjusting seat upper cover is sleeved on the focusing lens adjusting seat body, and a focusing lens branch channel is formed between the focusing lens adjusting seat upper cover and the step surface.
Preferably, the upper protection mirror assembly comprises an upper protection mirror mounting seat with a hollow inside, the collimating mirror assembly further comprises a collimating mirror mounting seat with a hollow inside, the focusing mirror assembly further comprises a focusing mirror mounting seat with a hollow inside, the lower protection mirror assembly comprises a lower protection mirror mounting seat with a hollow inside, and the upper protection mirror mounting seat, the collimating mirror mounting seat, the focusing mirror mounting seat and the lower protection mirror mounting seat are sequentially connected;
The collimating up-and-down movement ring is arranged in the collimating mirror mounting seat, and the focusing mirror adjusting seat body is arranged in the focusing mirror mounting seat;
the main water inlet cooling channel comprises an upper protection mirror water inlet channel which is arranged in the upper protection mirror mounting seat in a winding manner, a collimating mirror water inlet channel which is arranged in the collimating mirror mounting seat, a focusing mirror water inlet channel which is arranged in the focusing mirror mounting seat in a winding manner, and a lower protection mirror water inlet channel which is arranged in the lower protection mirror mounting seat in a winding manner, wherein the upper protection mirror water inlet channel, the collimating mirror water inlet channel, the focusing mirror water inlet channel and the lower protection mirror water inlet channel are sequentially communicated, and the main water inlet is arranged on the upper protection mirror mounting seat.
Preferably, the main water outlet cooling channel comprises an upper protection mirror water outlet channel arranged in the upper protection mirror mounting seat, a collimating mirror water outlet channel arranged in the collimating mirror mounting seat, a focusing mirror water outlet channel arranged in the focusing mirror mounting seat and a lower protection mirror water outlet channel arranged in the lower protection mirror mounting seat, wherein the upper protection mirror water outlet channel, the collimating mirror water outlet channel, the focusing mirror water outlet channel and the lower protection mirror water outlet channel are sequentially communicated, and the main water outlet is arranged on the upper protection mirror mounting seat.
Preferably, the main water inlet cooling channel and/or the collimating lens branch channel and/or the focusing lens branch channel are/is provided with a flow regulating valve.
Preferably, the nozzle follower assembly comprises a nozzle, the laser cutting head further comprises air cooling channels, the air cooling channels sequentially penetrate through the upper protective lens assembly, the collimating lens assembly, the focusing lens assembly, the lower protective lens assembly and the nozzle follower assembly, air inlets of the air cooling channels are arranged on the upper protective lens assembly, air outlets of the air cooling channels are arranged on the nozzle, a plurality of air outlets of the air cooling channels are uniformly distributed on the circumference of the nozzle.
Preferably, temperature sensors are arranged in the upper protective lens assembly, the collimating lens assembly, the focusing lens assembly and the lower protective lens assembly.
A laser processing device comprises the laser cutting head.
The invention has the beneficial effects that:
According to the invention, the main water inlet cooling channel and the main water outlet cooling channel are arranged in the upper protective lens assembly, the collimating lens assembly, the focusing lens assembly and the lower protective lens assembly, so that each lens can be cooled, and the lenses are cooled through the main water inlet cooling channel and the main water outlet cooling channel simultaneously, so that the cooling effect is better; the collimating lens branch channel is arranged in the collimating up-and-down movement ring, so that the lens of the collimating lens with serious heating can be further effectively cooled, the integral cooling effect is better, and the collimating lens can be applied to a high-power laser cutting head.
Drawings
FIG. 1 is a schematic perspective view of a laser cutting head according to an embodiment of the present invention;
FIG. 2 is a schematic view of an exploded view of a laser cutting head according to an embodiment of the present invention;
FIG. 3 is a schematic view of an exploded view of a laser cutting head according to an embodiment of the present invention with the collimator lens mount and the focusing lens mount removed;
FIG. 4 is a schematic perspective view of a lower cover plate of a laser cutting head according to an embodiment of the present invention;
FIG. 5 is a schematic perspective view of an upper protective mirror assembly of a laser cutting head according to an embodiment of the present invention;
FIG. 6 is a diagram showing the distribution of the upper protective lens water inlet channel and the upper protective lens water outlet channel in the upper protective lens seat of the laser cutting head according to the embodiment of the invention;
FIG. 7 is a schematic perspective view of a laser cutting head alignment up and down motion ring according to an embodiment of the present invention;
FIG. 8 is a schematic top view of a laser cutting head alignment up and down motion ring according to an embodiment of the present invention;
FIG. 9 is a schematic cross-sectional view of the structure at A-A in FIG. 8;
FIG. 10 is a schematic view of an exploded view of a laser cutting head according to an embodiment of the present invention from another perspective with the collimator lens mount and the focusing lens mount removed;
FIG. 11 is a schematic cross-sectional view of a focusing lens assembly of a laser cutting head according to an embodiment of the present invention with a focusing lens mount removed;
FIG. 12 is a schematic cross-sectional view of a laser cutting head according to an embodiment of the present invention;
fig. 13 is a schematic view of an exploded structure of a nozzle and a connection sleeve of a laser cutting head according to an embodiment of the present invention.
In the figure:
1-upper protective lens component, 11-upper protective lens mounting seat, 111-upper adapter seat, 1111-main water inlet, 1112-main water outlet, 1113-air cooling channel air inlet, 112-upper cover plate, 1121-branch water outlet and 1122-upper protective lens water outlet channel water inlet;
The device comprises a 2-collimating lens component, a 21-collimating lens mounting seat, a 211-focus position display screen, a 22-collimating up-down moving ring, a 221-water inlet of a collimating lens branch channel, a 222-water outlet of a collimating lens branch channel, a 223-upper collimating lens branch channel, a 224-first through hole, a 225-second through hole, a 23-bracket, a 231-water outlet pipe and a 232-water inlet pipe;
3-focusing lens components, 31-focusing lens installation seats, 32-focusing lens adjustment seats, 321-focusing lens adjustment seat upper covers, 3211-a water inlet of a focusing lens branch channel, 3212-a water outlet of a focusing lens branch channel, 322-a focusing lens adjustment seat body, 323-a lens installation plug and 324-a lens installation frame;
the device comprises a 4-lower protective lens assembly, a 41-lower protective lens mounting seat, a 411-lower cover plate, a 4111-lower protective lens water inlet channel, a 4112-lower protective lens water outlet channel and a 412-lower adapter;
5-nozzle follower assembly, 51-nozzle, 511-air outlet of air cooling channel, 52-connecting sleeve, 521-air flow groove;
100-air cooling channel, 200-cutting air channel.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, 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. Wherein the terms "first position" and "second position" are two different positions.
Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, either fixed or removable; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. 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.
Unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The technical scheme of the invention is further described below by means of specific embodiments in combination with the accompanying drawings 1-13.
The embodiment provides a laser processing device, which comprises a laser cutting head. The existing laser cutting head concentrates on medium and low power, however, the larger the power of the laser cutting head is, the larger the thickness of the corresponding metal plate which can be cut is, so that the demand on the high-power laser cutting head in the market is larger, but the larger the power of the laser cutting head is, the more serious the heating of the lens is, the integral cooling effect of the existing laser cutting head is poor, and the service life of the lens is reduced.
In order to solve the above-mentioned problems, as shown in fig. 1 to 3, the present embodiment provides a laser cutting head with a good cooling effect, which includes an upper protection mirror assembly 1, a collimator mirror assembly 2, a focusing mirror assembly 3, a lower protection mirror assembly 4, and a nozzle follower assembly 5, which are sequentially disposed from top to bottom.
The laser cutting head also comprises a water cooling channel, wherein the water cooling channel comprises a main water inlet cooling channel, a main water outlet cooling channel and a collimating lens branch channel.
The main water inlet cooling channel sequentially penetrates through the upper protective lens assembly 1, the collimating lens assembly 2, the focusing lens assembly 3 and the lower protective lens assembly 4, and a main water inlet 1111 communicated with the main water inlet cooling channel is arranged on the upper protective lens assembly 1.
The main water outlet cooling channel sequentially penetrates through the upper protective lens assembly 1, the collimating lens assembly 2, the focusing lens assembly 3 and the lower protective lens assembly 4, a main water outlet 1112 communicated with the main water outlet cooling channel is arranged on the upper protective lens assembly 1, and a water outlet of the main water inlet cooling channel is connected with a water inlet of the main water outlet cooling channel in the lower protective lens assembly 4.
The collimating mirror assembly 2 comprises a collimating up-and-down moving ring 22, a collimating mirror branch channel is arranged in the collimating up-and-down moving ring 22, a water inlet 221 of the collimating mirror branch channel is communicated with a main water inlet cooling channel, and a water outlet 222 of the collimating mirror branch channel is communicated with a main water outlet cooling channel.
In this embodiment, the upper protection mirror assembly 1, the collimating mirror assembly 2, the focusing mirror assembly 3, the lower protection mirror assembly 4 and the nozzle follower assembly 5 can cool the lens in the laser cutting head through the double cooling of the main water inlet cooling channel and the main water outlet cooling channel. The collimating lens branch channel is arranged in the collimating up-and-down movement ring 22 in the collimating lens assembly 2, so that the lens in the collimating lens assembly 2 with serious heat generation is further cooled, and the overall cooling effect is better.
Specifically, the upper protection mirror assembly 1 includes an upper protection mirror mounting seat 11 with a hollow interior, the collimating mirror assembly 2 further includes a collimating mirror mounting seat 21 with a hollow interior, the focusing mirror assembly 3 further includes a focusing mirror mounting seat 31 with a hollow interior, and the lower protection mirror assembly 4 includes a lower protection mirror mounting seat 41 with a hollow interior, and the upper protection mirror mounting seat 11, the collimating mirror mounting seat 21, the focusing mirror mounting seat 31 and the lower protection mirror mounting seat 41 are sequentially connected. The collimator up-and-down movement ring 22 is provided in the collimator lens mount 21.
In order to better cool the lens in the laser cutting head, the main water inlet cooling channel comprises an upper protective lens water inlet channel which is arranged in the upper protective lens mounting seat 11 in a winding way, a collimating lens water inlet channel which is arranged in the collimating lens mounting seat 21, a focusing lens water inlet channel which is arranged in the focusing lens mounting seat 31 in a winding way and a lower protective lens water inlet channel which is arranged in the lower protective lens mounting seat 41 in a winding way, and the upper protective lens water inlet channel, the collimating lens water inlet channel, the focusing lens water inlet channel and the lower protective lens water inlet channel are sequentially communicated, and the main water inlet 1111 is arranged on the upper protective lens mounting seat 11. Go up protection mirror water inlet channel, focusing mirror water inlet channel and lower protection mirror water inlet channel through the mode setting of winding, can make the cooling effect of lens better, and can make the temperature of lens even.
Further, the main water outlet cooling channel includes an upper protection mirror water outlet channel disposed in the upper protection mirror mounting seat 11, a collimating mirror water outlet channel disposed in the collimating mirror mounting seat 21, a focusing mirror water outlet channel disposed in the focusing mirror mounting seat 31, and a lower protection mirror water outlet channel disposed in the lower protection mirror mounting seat 41, wherein the upper protection mirror water outlet channel, the collimating mirror water outlet channel, the focusing mirror water outlet channel and the lower protection mirror water outlet channel are sequentially communicated, and the main water outlet 1112 is disposed on the upper protection mirror mounting seat 11. The lower protective mirror assembly 4 includes a lower cover 411 and a lower adapter 412 disposed at the bottom of the lower cover 411. As shown in fig. 4, the lower protection mirror water outlet channel is communicated with the lower protection mirror water inlet channel, that is, the water outlet of the lower protection mirror water inlet channel is communicated with the water inlet 4112 of the lower protection mirror water outlet channel, so as to realize the communication between the water outlet of the main water inlet cooling channel and the water inlet of the main water outlet cooling channel.
As shown in fig. 5 to 7, the upper protection mirror mounting seat 11 includes an upper adaptor seat 111 and an upper cover plate 112, and the upper protection mirror water inlet channel includes an upper adaptor seat water inlet channel wound in the upper adaptor seat 111 and an upper cover plate water inlet channel wound in the upper cover plate 112, and the upper adaptor seat water inlet channel is communicated with the upper cover plate 112 water inlet channel.
Specifically, the upper protection lens water outlet channel includes an upper adaptor water outlet channel wound in the upper adaptor 111, and a water outlet 222 of the collimating lens branch channel is connected to a water inlet of the upper adaptor water outlet channel through the upper cover plate 112, optionally, the upper adaptor water outlet channel is wound in the upper adaptor 111, so that the water outlet 222 of the collimating lens branch channel and the water inlet of the upper adaptor water outlet channel are located on the same side, which is convenient for the arrangement of pipelines, and can enhance the cooling effect of the lenses in the upper protection lens assembly 1. The water inlet 221 of the collimating mirror branch channel is communicated with the water inlet of the upper cover plate, and optionally, a branch water outlet 1121 communicated with the water inlet of the upper cover plate is led out of the upper cover plate 112, and the branch water outlet 1121 is communicated with the water inlet 221 of the collimating mirror branch channel.
As shown in fig. 7 to 9, in order to make the cooling effect of the lenses in the collimator lens assembly 2 better, the collimator lens sub-passages include an upper collimator lens sub-passage 223 provided above the collimator upper and lower moving ring 22 and a lower collimator lens sub-passage provided below the collimator upper and lower moving ring 22, the upper collimator lens sub-passage 223 and the lower collimator lens sub-passage communicating. Specifically, a stepped upper groove is formed at the top of the collimating up-down moving ring 22, and an upper collimating mirror support channel 223 is formed by an upper sealing cover plate disposed at the top of the upper groove and the upper groove. Similarly, a stepped lower groove is formed at the bottom of the collimating up-down moving ring 22, and a lower collimating lens branch channel is formed by a lower sealing cover plate arranged at the bottom of the lower groove and the lower groove. The water inlet 221 of the collimating lens branch channel is communicated with the upper collimating lens branch channel 223, the upper collimating lens branch channel 223 is communicated with the lower collimating lens branch channel through a first through hole 224 axially arranged along the collimating up-down moving ring 22, and the lower collimating lens branch channel is communicated with the water outlet 222 of the collimating lens branch channel through a second through hole 225 axially arranged along the collimating up-down moving ring 22.
Because the outer wall of the collimating mirror mounting seat 21 is thinner, it is inconvenient to directly process the collimating mirror water inlet channel in the collimating mirror mounting seat 21, in order to solve the above problems, as shown in fig. 3 and 10, the collimating mirror mounting seat 21 is connected with a bracket 23, a water inlet pipe 232 penetrating through the bracket 23 forms the collimating mirror water inlet channel, and a water outlet pipe 231 penetrating through the bracket 23 forms the collimating mirror water outlet channel. Optionally, the water inlet pipe 232 and the water outlet pipe 231 are copper pipes, so that the heat conduction effect is better.
Further, the focusing lens assembly 3 includes a focusing lens adjusting seat 32, and the focusing lens adjusting seat 32 is disposed in the focusing lens mounting seat 31. The lens in the focusing lens assembly 3 heats comparatively seriously, in order to make the cooling effect of the lens in the focusing lens assembly 3 better, the water cooling channel still includes around locating the focusing lens branch channel on the focusing lens adjusting seat 32, the water inlet 3211 of focusing lens branch channel communicates with the cooling channel of main water inflow, the delivery port 3212 of focusing lens branch channel communicates with the cooling channel of main water outflow.
As shown in fig. 11, the focusing lens adjusting seat 32 includes a focusing lens adjusting seat body 322 and a focusing lens adjusting seat upper cover 321, the outer surface of the focusing lens adjusting seat body 322 is provided with a step surface, the focusing lens adjusting seat upper cover 321 is sleeved on the focusing lens adjusting seat body 322, and a focusing lens branch channel is formed between the focusing lens adjusting seat upper cover 321 and the step surface. The water inlet 3211 of the focusing mirror support channel is connected to the water inlet pipe 232, and the water outlet 3212 of the focusing mirror support channel is connected to the water outlet pipe 231. Specifically, the water inlet 3211 of the focusing mirror support channel is connected to the water inlet pipe 232 through a joint and a pipe fitting, and the water outlet 3212 of the focusing mirror support channel is connected to the water outlet pipe 231 through a joint and a pipe fitting.
Further, be provided with lens mounting bracket 324 in the focusing lens adjusting seat body 322, the lens is installed in lens mounting bracket 324, in order to strengthen the heat conduction effect in the focusing lens adjusting seat body 322, still be provided with lens mounting plug 323 in lens mounting bracket 324, lens mounting plug 323 is fixed the lens with lens mounting bracket 324 cooperation in screwing in lens mounting bracket 324 from the bottom of lens mounting bracket 324, in order to make the better conduction of the heat of lens to lens mounting bracket 324, thereby better cooling through focusing lens branch channel, increase one and screw in lens mounting plug 323 of lens mounting bracket 324 by the top screw thread of lens mounting bracket 324.
In order to facilitate the adjustment of the water flow of each channel according to the heating conditions of lenses at different positions, a flow adjusting valve is arranged on the main water inlet cooling channel and/or the collimating lens branch channel. For example, a flow regulating valve may be provided on the water inlet pipe 232, or may be provided between the upper cover plate 112 and the water inlet 221 of the collimator lens branch passage.
In order to make the cooling effect of the laser cutting head better, as shown in fig. 12 and 13, the nozzle follower assembly 5 includes a nozzle 51, the laser cutting head further includes an air cooling channel 100, the air cooling channel 100 sequentially passes through the upper protective mirror assembly 1, the collimating mirror assembly 2, the focusing mirror assembly 3, the lower protective mirror assembly 4 and the nozzle follower assembly 5, an air inlet 1113 of the air cooling channel is arranged in the upper protective mirror assembly 1, an air outlet 511 of the air cooling channel is arranged in the nozzle 51, a plurality of air outlets 511 of the air cooling channel are arranged, and the air outlets 511 of the plurality of air cooling channels are uniformly distributed on the circumference of the nozzle 51, so that the cooling effect of the nozzle can be better by arranging the air outlets 511 of the plurality of air cooling channels on the circumference of the nozzle 51. Preferably, a connecting sleeve 52 is connected above the nozzle 51, an air flow groove 521 is arranged on the connecting sleeve, a nozzle air flow channel is formed between the nozzle 51 and the air flow groove 521, an air outlet 511 of the air cooling channel is communicated with the nozzle air flow channel, and the nozzle air flow channel is communicated with the air cooling channel.
In order to monitor the real-time temperature of the lenses in the laser cutting head conveniently, temperature sensors are arranged in the upper protective lens assembly 1, the collimating lens assembly 2, the focusing lens assembly 3 and the lower protective lens assembly 4. Specifically, the temperature sensor may be disposed in the upper protection mirror mount 11, the collimator mirror mount 21, the focus mirror mount 31, or the lower protection mirror mount 41.
In order to facilitate obtaining the real-time position of the laser focus, thereby facilitating guiding the worker to correctly use the focus position for processing, a focus position display screen 211 is provided on the collimator lens mount 21. In addition, in order to facilitate the company to know the on-site trial condition of the customer laser cutting head, a signal transmitting antenna is arranged on the laser cutting head, and signals are periodically transmitted to the Internet of things system through a chip in the circuit board, so that the on-site trial condition of the laser cutting head is accurately known.
According to the embodiment, the laser cutting head can be comprehensively cooled through the arrangement of the main water inlet cooling channel and the main water outlet cooling channel, the collimating lens support channel and the focusing lens support channel can strengthen cooling of the lenses in the collimating lens assembly 2 and the lenses in the focusing lens assembly 3, which are serious in heating, and meanwhile, the gas cooling channel is used for further strengthening overall cooling of the laser cutting head, so that the overall cooling effect is better, and the device is suitable for processing of high-power laser cutting heads.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (6)
1. The laser cutting head comprises an upper protective lens assembly (1), a collimating lens assembly (2), a focusing lens assembly (3), a lower protective lens assembly (4) and a nozzle follow-up assembly (5) which are sequentially arranged from top to bottom, and is characterized by further comprising a water cooling channel, wherein the water cooling channel comprises a main water inlet cooling channel, a main water outlet cooling channel and a collimating lens branch channel;
the main water inlet cooling channel sequentially penetrates through the upper protective lens assembly (1), the collimating lens assembly (2), the focusing lens assembly (3) and the lower protective lens assembly (4), and a main water inlet (1111) communicated with the main water inlet cooling channel is formed in the upper protective lens assembly (1);
the main water outlet cooling channel sequentially penetrates through the upper protective lens assembly (1), the collimating lens assembly (2), the focusing lens assembly (3) and the lower protective lens assembly (4), a main water outlet (1112) communicated with the main water outlet cooling channel is arranged on the upper protective lens assembly (1), and the water outlet of the main water inlet cooling channel is connected with the water inlet of the main water outlet cooling channel in the lower protective lens assembly (4);
The collimating lens assembly (2) comprises a collimating up-down moving ring (22), the collimating lens branch channel is arranged in the collimating up-down moving ring (22), a water inlet (221) of the collimating lens branch channel is communicated with the main water inlet cooling channel, and a water outlet (222) of the collimating lens branch channel is communicated with the main water outlet cooling channel;
The focusing lens assembly (3) comprises a focusing lens adjusting seat (32), the water cooling channel further comprises a focusing lens branch channel which is wound on the focusing lens adjusting seat (32), a water inlet (3211) of the focusing lens branch channel is communicated with the main water inlet cooling channel, and a water outlet (3212) of the focusing lens branch channel is communicated with the main water outlet cooling channel;
the focusing lens adjusting seat (32) comprises a focusing lens adjusting seat body (322) and a focusing lens adjusting seat upper cover (321), a step surface is arranged on the outer surface of the focusing lens adjusting seat body (322), the focusing lens adjusting seat upper cover (321) is sleeved on the focusing lens adjusting seat body (322), and a focusing lens branch channel is formed between the focusing lens adjusting seat upper cover (321) and the step surface;
The upper protection mirror assembly (1) comprises an upper protection mirror mounting seat (11) with a hollow inside, the collimating mirror assembly (2) further comprises a collimating mirror mounting seat (21) with a hollow inside, the focusing mirror assembly (3) further comprises a focusing mirror mounting seat (31) with a hollow inside, the lower protection mirror assembly (4) comprises a lower protection mirror mounting seat (41) with a hollow inside, and the upper protection mirror mounting seat (11), the collimating mirror mounting seat (21), the focusing mirror mounting seat (31) and the lower protection mirror mounting seat (41) are sequentially connected;
the collimating up-and-down moving ring (22) is arranged in the collimating mirror mounting seat (21), and the focusing mirror adjusting seat body (322) is arranged in the focusing mirror mounting seat (31);
The main water inlet cooling channel comprises an upper protection mirror water inlet channel wound in the upper protection mirror mounting seat (11), a collimation mirror water inlet channel arranged in the collimation mirror mounting seat (21), a focusing mirror water inlet channel wound in the focusing mirror mounting seat (31) and a lower protection mirror water inlet channel wound in the lower protection mirror mounting seat (41), the upper protection mirror water inlet channel, the collimation mirror water inlet channel, the focusing mirror water inlet channel and the lower protection mirror water inlet channel are sequentially communicated, and the main water inlet (1111) is arranged on the upper protection mirror mounting seat (11);
The laser cutting head comprises a laser cutting head body, and is characterized in that the laser cutting head body comprises a laser cutting head body, the laser cutting head body further comprises an air cooling channel (100), the air cooling channel (100) sequentially penetrates through the upper protective lens assembly (1), the collimating lens assembly (2), the focusing lens assembly (3), the lower protective lens assembly (4) and the nozzle following assembly (5), an air inlet (1113) of the air cooling channel is arranged in the upper protective lens assembly (1), an air outlet (511) of the air cooling channel is arranged in the laser cutting head body (51), a plurality of air outlets (511) of the air cooling channel are formed, and the air outlets (511) of the air cooling channel are uniformly distributed in the circumference of the laser cutting head body (51).
2. The laser cutting head of claim 1, wherein the collimating mirror sub-channel comprises an upper collimating mirror sub-channel (223) disposed above the collimating up-down motion ring (22) and a lower collimating mirror sub-channel disposed below the collimating up-down motion ring (22), the upper collimating mirror sub-channel (223) being in communication with the lower collimating mirror sub-channel.
3. The laser cutting head according to claim 1, wherein the main water outlet cooling channel comprises an upper protection mirror water outlet channel arranged in the upper protection mirror mounting seat (11), a collimating mirror water outlet channel arranged in the collimating mirror mounting seat (21), a focusing mirror water outlet channel arranged in the focusing mirror mounting seat (31) and a lower protection mirror water outlet channel arranged in the lower protection mirror mounting seat (41), wherein the upper protection mirror water outlet channel, the collimating mirror water outlet channel, the focusing mirror water outlet channel and the lower protection mirror water outlet channel are sequentially communicated, and the main water outlet (1112) is arranged on the upper protection mirror mounting seat (11).
4. The laser cutting head according to claim 1, wherein a flow regulating valve is provided on the main water inlet cooling channel and/or the collimator lens branch channel.
5. The laser cutting head according to claim 1, wherein temperature sensors are provided in the upper protective mirror assembly (1), the collimator mirror assembly (2), the focusing mirror assembly (3) and the lower protective mirror assembly (4).
6. A laser processing apparatus comprising the laser cutting head of any one of claims 1-5.
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| CN201910843853.4A CN110508942B (en) | 2019-09-06 | 2019-09-06 | Laser cutting head and laser processing equipment |
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| CN201910843853.4A CN110508942B (en) | 2019-09-06 | 2019-09-06 | Laser cutting head and laser processing equipment |
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| CN111451636B (en) * | 2020-05-22 | 2020-11-17 | 深圳市恒川激光技术有限公司 | Hand-held type laser welding tip |
| CN113523607B (en) * | 2021-08-04 | 2023-07-14 | 广东宏石激光技术股份有限公司 | Optical temperature control device, laser cutting head and laser processing method |
| CN113894437A (en) * | 2021-09-28 | 2022-01-07 | 无锡亮源激光技术有限公司 | Wafer splitting device |
| CN117182353B (en) * | 2023-11-06 | 2024-02-23 | 武汉锐科光纤激光技术股份有限公司 | Laser cutting nozzle |
| CN117182352B (en) * | 2023-11-06 | 2024-02-20 | 武汉锐科光纤激光技术股份有限公司 | Laser cutting head |
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