CN110315202B - Optical module for laser cutting - Google Patents
Optical module for laser cutting Download PDFInfo
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- CN110315202B CN110315202B CN201910554417.5A CN201910554417A CN110315202B CN 110315202 B CN110315202 B CN 110315202B CN 201910554417 A CN201910554417 A CN 201910554417A CN 110315202 B CN110315202 B CN 110315202B
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- 238000003698 laser cutting Methods 0.000 title claims abstract description 19
- 230000003287 optical effect Effects 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- 238000001816 cooling Methods 0.000 claims abstract description 54
- 239000013307 optical fiber Substances 0.000 claims abstract description 43
- 239000000498 cooling water Substances 0.000 claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 description 12
- 230000010287 polarization Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000005499 meniscus Effects 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
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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
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0648—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising lenses
-
- 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
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/064—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms
- B23K26/0652—Shaping the laser beam, e.g. by masks or multi-focusing by means of optical elements, e.g. lenses, mirrors or prisms comprising prisms
-
- 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
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/067—Dividing the beam into multiple beams, e.g. multifocusing
- B23K26/0673—Dividing the beam into multiple beams, e.g. multifocusing into independently operating sub-beams, e.g. beam multiplexing to provide laser beams for several stations
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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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/146—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing a liquid
-
- 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)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
本发明公开了一种用于激光切割的光学模组，包括准直模组、分光模组、调光镜模组和水导座，所述准直模组的一侧设置有分光模组，所述分光模组的一侧设置有调光镜模组，所述调光镜模组的一侧均匀设置有水导座，所述准直模组包括光纤水冷块下板，所述光纤水冷块下板的外部对应开设有通孔，光纤水冷块下板的内壁向内凹陷有第一冷却水槽，且通孔与第一冷却水槽相贯通，所述光纤水冷块下板的内部通过螺纹连接有水冷连接块，所述水冷连接块的内部插接有QBH光纤标准件，所述QBH光纤标准件与水冷连接块之间设置有密封压环，所述水冷连接块的内壁分别通过卡接固定有双凸透镜和双月镜片，本发明，具有切割效率高和能切割复杂图样的特点。
The invention discloses an optical module for laser cutting, which comprises a collimation module, a light splitting module, a dimming mirror module and a water guide base, and a light splitting module is arranged on one side of the collimation module, One side of the light splitting module is provided with a dimming mirror module, one side of the dimming mirror module is evenly provided with a water guide seat, and the collimation module includes a lower plate of an optical fiber water cooling block, and the optical fiber water cooling A through hole is correspondingly opened on the outside of the lower plate of the optical fiber water-cooling block, the inner wall of the lower plate of the optical fiber water-cooling block is recessed inwardly with a first cooling water groove, and the through hole is communicated with the first cooling water groove, and the inner part of the lower plate of the optical fiber water-cooling block is connected by screws. There is a water-cooled connection block, and the QBH optical fiber standard part is inserted into the inside of the water-cooled connection block, and a sealing pressure ring is arranged between the QBH optical fiber standard part and the water-cooled connection block, and the inner walls of the water-cooled connection block are respectively fixed by clamping There are biconvex lenses and bilunar lenses, and the present invention has the characteristics of high cutting efficiency and capable of cutting complex patterns.
Description
Technical Field
The invention relates to the technical field of laser cutting, in particular to an optical module for laser cutting.
Background
Laser processing is widely used in various industries as a novel material processing technology. The laser cutting has the characteristics of narrow cutting seam and low roughness and small heat affected zone, and is used in the cutting field mainly for processing metal materials. The water-guided laser cutting is to couple a laser beam into a very fine water column through a certain coupling device, and guide the laser to reach a cutting area through the fine water column. Because the water column has fluidity, the heat and the slag generated by cutting can be taken away at any time, the cut is flat and has no splashing, and the method has wide application prospect.
The water guide cutting speed is usually only one dozen times of that of the conventional light adjusting lens, and when precision components are cut in large batch, the cutting head moves back and forth due to the fact that only one laser column is arranged, so that a large amount of time is consumed, and popularization in actual production is not facilitated; and the cutting module can absorb laser energy and lead to the module to generate heat at the in-process of absorption and processing laser, and conventional air-cooled heat dissipation can not directly be to the lens heat dissipation, and the radiating effect is poor, because the material is heated and is out of shape when using for a long time, influences cutting accuracy. Therefore, it is necessary to design an optical module for laser cutting with high cutting efficiency.
Disclosure of Invention
The present invention is directed to an optical module for laser cutting, so as to solve the problems mentioned in the background art.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides an optical module for laser cutting, includes collimation module, beam split module, dimming mirror module and water guide seat, one side of collimation module is provided with the beam split module, one side of beam split module is provided with the dimming mirror module, one side of dimming mirror module evenly is provided with the water guide seat, and this laser cutting module compact structure integrates each module an organic whole, realizes the modularization installation and dismantles, conveniently changes certain module wherein.
Further, the collimation module comprises an optical fiber water cooling block lower plate, a through hole is correspondingly formed in the outer portion of the optical fiber water cooling block lower plate, a first cooling water groove is formed in the inner wall of the optical fiber water cooling block lower plate in an inwards recessed mode, the through hole is communicated with the first cooling water groove, a water cooling connecting block is connected to the inner portion of the optical fiber water cooling block lower plate through threads, a QBH optical fiber standard component is connected to the water cooling connecting block in an inserted mode, a sealing pressing ring is arranged between the QBH optical fiber standard component and the water cooling connecting block, a biconvex lens and a biconvex lens are fixed to the inner wall of the water cooling connecting block through clamping respectively, the bottom of the biconvex lens is in contact with the biconvex lens, a light splitting locking ring is arranged at the bottom of the biconvex lens, a lower locking ring is connected to the inner wall of the bottom of the optical fiber water cooling block lower plate through threads, get into first cooling trough in, play the cooling action to biconvex lens and meniscus lens, prevent that the high temperature from damaging the component in the working process, flow out from another through-hole, lower locking ring is used for consolidating whole module and locks QBH optic fibre standard component, and biconvex lens and meniscus lens utilize the refraction principle for the laser of the formula of dispersing of optical fiber output is collimated, and the laser beam becomes parallel beam after passing through, the subsequent processing of being convenient for.
Furthermore, the light splitting module comprises a shell, a through hole is formed in the top of the shell, the top of the shell is fixed with the lower plate of the optical fiber water cooling block through a bolt, a water cooling inner sleeve is connected to the inner wall of the shell through threads, a second cooling water tank is formed in the outer portion of the water cooling inner sleeve, and water flow enters the second cooling water tank through the through hole to take away heat of the water cooling inner sleeve.
Further, a phase delay wave plate and a wollaston prism are fixed on the inner wall of the water-cooling inner sleeve through clamping respectively, the bottom of the phase delay wave plate is in contact with the wollaston prism, the inner wall of the water-cooling inner sleeve is in threaded connection with a light adjusting mirror group locking ring, a birefringent wedge prism is fixed on the inner wall of the light adjusting mirror group locking ring through clamping, a prism locking ring is in threaded connection with the inner wall of the bottom of the light adjusting mirror group locking ring, the top of the prism locking ring is in contact with the birefringent wedge prism, because the laser at the incident end is a four-wavelength laser, the laser emitted from the inside of the optical fiber has four different wavelengths, the phase delay wave plate keeps the polarization state of the laser with the first wavelength λ 1 unchanged, the polarization of the second λ 2 rotates 90 °, the polarization of the third λ 3 rotates 180 °, and the fourth λ 4 rotates 270 °, as shown in, the Wollaston prism divides the light beam into four beams according to the angle, then the four beams are converted into parallel light by the double-refraction wedge prism, the double-refraction wedge prism can be designed into a single piece or two prisms are glued together, and the refraction angle of the prism is selected.
Furthermore, the light modulation lens module comprises a rectangular shell, the top of the rectangular shell is fixed with the outer shell through bolts, through holes are uniformly formed in one side of the rectangular shell, connecting lines of the through holes are parallel to straight lines where the diameters of the birefringent wedge prisms are located, a plurality of second motors are mounted on the side wall of the rectangular shell, output shafts of the second motors are connected with second light modulation lenses, a first motor is mounted on the inner wall of the top of the rectangular shell, an output shaft of the first motor is connected with a first light modulation lens, field lenses are uniformly mounted at the bottom of the rectangular shell, and the field lenses are used for changing the positions of imaging light beams on the premise that the optical characteristics of the system are not changed; the first motor and the second motor are respectively used for driving the first dimming mirror and the second dimming mirror to rotate for a certain angle so as to change the emitting direction of the laser according to the shape to be cut.
Furthermore, the number of the field lens, the second light adjusting lens and the first light adjusting lens is four, and the laser beams are divided into four beams, so that the angle and the left and right positions of each beam of laser need to be adjusted independently to adapt to different cutting patterns.
Furthermore, the central line of water guide seat and the field lens are the same straight line, the center department of water guide seat has seted up the through-hole, and is provided with the printing opacity mirror in the through-hole, the inlet channel has been seted up to the both sides of water guide seat, the bottom of water guide seat is provided with the exhalant canal, the top periphery of water guide seat evenly is provided with electric putter, electric putter passes through hinge swing joint with the bottom outer wall of water guide seat, and the laser from the field lens outgoing gets into inside the water guide seat through the printing opacity mirror, and the inlet channel is connected with outside high-pressure rivers, outwards jets out from the exhalant canal after rivers pressurization, and four electric putter adjust the angle of water guide seat through the concertina movement effect, and the method of angle adjustment is that one of two electric putter on the diagonal extends another and shortens.
Furthermore, electric putter, second motor and first motor all with external power source and control system electric connection, through control system drive second motor and first motor operation, change the inclination of laser after, on the other hand control system drive four electric putter stretch out and draw back, make the central line of water outlet channel and laser beam be same straight line, make the water column can the cladding in the outside of laser.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, by arranging the light splitting module, the composite light waves with different wavelengths are split into four beams by using a light wave phase delay principle; through being provided with the dimming mirror module, can be according to cutting path, angle and the position of four bundles of laser of adjustment, through set up electric putter around the water guide seat, can be according to the angle of laser angle adjustment water guide seat, make laser can be by the water column cladding all the time for this optical module has the characteristics that can cut complicated pattern.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an exploded view of the collimation module of the present invention;
FIG. 3 is a schematic cross-sectional front view of the collimating module of the present invention;
FIG. 4 is an exploded view of the spectroscopy module of the present invention;
FIG. 5 is a schematic cross-sectional front view of the optical splitter module of the present invention;
FIG. 6 is a schematic diagram of the beam splitting module of the present invention;
FIG. 7 is a schematic cross-sectional view of a light adjusting lens module according to the present invention;
FIG. 8 is a schematic view of a water guide of the present invention;
FIG. 9 is a schematic view of the installation of the water guide and the electric push rod of the present invention;
in the figure: 1. a collimation module; 2. a light splitting module; 3. a light-adjusting mirror module; 4. a water guide seat; 5. an optical fiber; 11. QBH fiber standard component; 12. sealing the pressure ring; 13. a water-cooling connecting block; 14. a lower plate of the optical fiber water cooling block; 141. a first cooling water tank; 15. a lenticular lens; 16. a bi-lunar lens; 17. a light splitting lens group locking ring; 18. a lower locking ring; 21. an outer housing; 22. water-cooling the inner sleeve; 221. a second cooling water tank; 23. a phase retardation wave plate; 24. a Wollaston prism; 25. a locking ring of the light adjusting lens group; 26. a birefringent wedge prism; 27. a prism locking ring; 31. a rectangular housing; 32. a first motor; 33. a second motor; 34. a first dimming mirror; 35. a second light adjusting mirror; 36. a field lens; 41. a water inlet channel; 42. a water outlet channel; 43. a light-transmitting mirror; 44. an electric push rod.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, the present invention provides the following technical solutions: an optical module for laser cutting comprises a collimation module 1, a light splitting module 2, a light modulation mirror module 3 and a water guide seat 4, wherein the light splitting module 2 is arranged on one side of the collimation module 1, the light modulation mirror module 3 is arranged on one side of the light splitting module 2, the water guide seat 4 is uniformly arranged on one side of the light modulation mirror module 3, the laser cutting module is compact in structure, all modules are integrated into a whole, modularized installation and disassembly are realized, and one module is convenient to replace;
the collimation module 1 comprises an optical fiber water cooling block lower plate 14, the outer part of the optical fiber water cooling block lower plate 14 is correspondingly provided with a through hole, the inner wall of the optical fiber water cooling block lower plate 14 is inwards sunken with a first cooling water tank 141, the through hole is communicated with the first cooling water tank 141, the inner part of the optical fiber water cooling block lower plate 14 is connected with a water cooling connecting block 13 through a thread, a QBH optical fiber standard part 11 is inserted into the water cooling connecting block 13, a sealing press ring 12 is arranged between the QBH optical fiber standard part 11 and the water cooling connecting block 13, the inner wall of the water cooling connecting block 13 is respectively fixed with a double convex lens 15 and a double moon lens 16 through clamping, the bottom of the double convex lens 15 is contacted with the double moon lens 16, the bottom of the double moon lens 16 is provided with a spectroscope group locking ring 17, the inner wall of the bottom of the optical fiber water cooling block lower plate 14 is connected with, the water flow flows into a through hole of the lower plate 14 of the optical fiber water cooling block through an external pipeline, enters the first cooling water tank 141, plays a role in cooling the double convex lens 15 and the bi-lunar lens 16, prevents the elements from being damaged due to overhigh temperature in the working process, flows out from the other through hole, the lower locking ring 18 is used for reinforcing the whole module and locking the QBH optical fiber standard component 11, the double convex lens 15 and the bi-lunar lens 16 are used for collimating divergent laser output by the optical fiber 5 by using the refraction principle, and the laser beam is changed into parallel beams after passing through the parallel beams, so that subsequent processing is facilitated;
the light splitting module 2 comprises an outer shell 21, the top of the outer shell 21 is provided with a through hole, the top of the outer shell 21 is fixed with a lower plate 14 of the optical fiber water cooling block through a bolt, the inner wall of the outer shell 21 is connected with a water cooling inner sleeve 22 through threads, a second cooling water tank 221 is arranged outside the water cooling inner sleeve 22, and water flow enters the second cooling water tank 221 through the through hole to take away heat of the water cooling inner sleeve 22;
the inner wall of the water-cooling inner sleeve 22 is respectively fixed with a phase delay wave plate 23 and a Wollaston prism 24 through clamping, the bottom of the phase delay wave plate 23 is contacted with the Wollaston prism 24, the inner wall of the water-cooling inner sleeve 22 is connected with a light-adjusting lens set locking ring 25 through screw threads, the inner wall of the light-adjusting lens set locking ring 25 is fixed with a birefringent wedge prism 26 through clamping, the inner wall of the bottom of the light-adjusting lens set locking ring 25 is connected with a prism locking ring 27 through screw threads, the top of the prism locking ring 27 is contacted with the birefringent wedge prism 26, because the laser at the incident end is a four-wavelength laser, the laser emitted from the inside of the optical fiber 5 has four different wavelengths, the phase delay wave plate 23 keeps the polarization state of the laser with the first wavelength lambda 1 unchanged, the polarization of the second lambda 2 rotates 90 DEG, the polarization of the third lambda 3 rotates 180 DEG, the fourth lambda 4 rotates 270 DEG as shown, the Wollaston prism 24 divides the light beam into four beams according to the angle, then the light beams are converted into parallel light through the double-refraction wedge-shaped prism 26, the double-refraction wedge-shaped prism 26 can be designed into a single piece or two prisms are glued together, and the refraction angle of the prism is selected;
the light modulation lens module 3 comprises a rectangular shell 31, the top of the rectangular shell 31 is fixed with the outer shell 21 through bolts, through holes are uniformly formed in one side of the rectangular shell 31, connecting lines of the through holes are parallel to a straight line where the diameter of the birefringent wedge prism 26 is located, a plurality of second motors 33 are installed on the side wall of the rectangular shell 31, output shafts of the second motors 33 are connected with second light modulation lenses 35, a first motor 32 is installed on the inner wall of the top of the rectangular shell 31, an output shaft of the first motor 32 is connected with a first light modulation lens 34, field lenses 36 are uniformly installed at the bottom of the rectangular shell 31, and the field lenses 36 are used for changing the positions of imaging light beams on the premise that the optical characteristics of a system are not changed; the first motor 32 and the second motor 33 are respectively used for driving the first dimming mirror 34 and the second dimming mirror 35 to rotate for a certain angle so as to change the emitting direction of the laser according to the shape to be cut;
the number of the field lens 36, the second light adjusting lens 35 and the first light adjusting lens 34 is four, and since the laser beams are divided into four beams, each beam of laser needs to be adjusted in angle and left and right positions independently to adapt to different cutting patterns;
the central line of the water guide seat 4 and the field lens 36 are the same straight line, the center of the water guide seat 4 is provided with a through hole, the through hole is internally provided with a light transmitting lens 43, the two sides of the water guide seat 4 are provided with water inlet channels 41, the bottom of the water guide seat 4 is provided with a water outlet channel 42, the circumferential surface of the top of the water guide seat 4 is uniformly provided with electric push rods 44, the electric push rods 44 are movably connected with the outer wall of the bottom of the water guide seat 4 through hinges, laser emitted from the field lens 36 enters the inside of the water guide seat 4 through the light transmitting lens 43, the water inlet channels 41 are connected with external high-pressure water flow, the water flow is pressurized and then emitted from the water outlet channel 42, the four electric push rods 44 adjust the angle of the water guide seat 4 through the telescopic action, and the angle adjustment method is that;
the electric push rods 44, the second motor 33 and the first motor 32 are electrically connected with an external power supply and a control system, when the cutting angle and the relative position of laser are required to be adjusted, the control system drives the second motor 33 and the first motor 32 to operate, after the inclination of the laser is changed, the control system drives the four electric push rods 44 to stretch and retract on the other hand, so that the central line of the water outlet channel 42 and the laser beam are in the same straight line, and a water column can be coated outside the laser;
the laser cutting module has a compact structure, integrates all modules into a whole, realizes modularized assembly and disassembly, and is convenient to replace one module; the water flow flows into a through hole of the lower plate 14 of the optical fiber water cooling block through an external pipeline, enters the first cooling water tank 141, plays a role in cooling the double convex lens 15 and the bi-lunar lens 16, prevents the elements from being damaged due to overhigh temperature in the working process, flows out from the other through hole, the lower locking ring 18 is used for reinforcing the whole module and locking the QBH optical fiber standard component 11, the double convex lens 15 and the bi-lunar lens 16 are used for collimating divergent laser output by the optical fiber 5 by using the refraction principle, and the laser beam is changed into parallel beams after passing through the parallel beams, so that subsequent processing is facilitated; the water flow enters the second cooling water tank 221 through the through hole to take away the heat of the water-cooled inner sleeve 22; because the laser at the incident end is a four-wavelength laser, the laser emitted from the inside of the optical fiber 5 has four different wavelengths, the polarization state of the laser with the first wavelength λ 1 is kept unchanged by the phase retardation wave plate 23, the polarization of the laser with the second wavelength λ 2 is rotated by 90 °, the polarization of the laser with the third wavelength λ 3 is rotated by 180 °, and the polarization of the laser with the fourth wavelength λ 4 is rotated by 270 °, as shown in fig. 6, the wollaston prism 24 separates the light beam into four beams according to angles, and then the four beams are converted into parallel light by the birefringent wedge prism 26, the birefringent wedge prism 26 can be designed into a single piece or two prisms which are glued together, and the refraction angle of the prism is selected; the field lens 36 is used for changing the position of the imaging light beam without changing the optical characteristics of the system; the first motor 32 and the second motor 33 are respectively used for driving the first dimming mirror 34 and the second dimming mirror 35 to rotate for a certain angle so as to change the emitting direction of the laser according to the shape to be cut; the laser emitted from the field lens 36 enters the inside of the water guide seat 4 through the light transmitting lens 43, the water inlet channel 41 is connected with external high-pressure water flow, the water flow is pressurized and then is emitted from the water outlet channel 42, the four electric push rods 44 adjust the angle of the water guide seat 4 through the telescopic action, and the angle adjustment method is that one of the two electric push rods 44 on the diagonal is extended and the other is shortened; when the cutting angle and the relative position of the laser need to be adjusted, the control system drives the second motor 33 and the first motor 32 to operate, and after the inclination of the laser is changed, the control system drives the four electric push rods 44 to extend and retract, so that the central line of the water outlet channel 42 and the laser beam are in the same straight line, and the water column can be coated outside the laser.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910554417.5A CN110315202B (en) | 2019-06-25 | 2019-06-25 | Optical module for laser cutting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910554417.5A CN110315202B (en) | 2019-06-25 | 2019-06-25 | Optical module for laser cutting |
Publications (2)
| Publication Number | Publication Date |
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| CN110315202A CN110315202A (en) | 2019-10-11 |
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| CN103984112A (en) * | 2014-04-23 | 2014-08-13 | 深圳市大族激光科技股份有限公司 | Reflecting type optical isolator and laser machining equipment with the same |
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