CN219542024U - Laser cutting head - Google Patents
Laser cutting head Download PDFInfo
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- CN219542024U CN219542024U CN202223282994.XU CN202223282994U CN219542024U CN 219542024 U CN219542024 U CN 219542024U CN 202223282994 U CN202223282994 U CN 202223282994U CN 219542024 U CN219542024 U CN 219542024U
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Abstract
The utility model relates to the technical field of laser cutting, in particular to a laser cutting head which comprises a cutting head body, wherein the cutting head body comprises a collimating lens and a focusing lens, the cutting head body comprises a reflecting lens and a red light component, laser passing through the collimating lens and red light emitted by the red light component are both emitted to the reflecting lens, after the effect of the reflecting lens, the laser and the red light enter the focusing lens, and the optical axis of the red light and the optical axis of the laser after entering the focusing lens are coaxial. The red light component is integrated on the cutting head, so that coaxial adjustment before cutting is realized, and the coaxiality of the light paths is ensured.
Description
Technical Field
The utility model relates to the technical field of laser cutting, in particular to a laser cutting head.
Background
In the use process of the fiber laser, coaxial indicating light plays an important role on the fiber laser and the cutting head, and the coaxial indicating light often adopts visible light such as red light or green light and the like, so that the follow-up light path adjustment is convenient for the non-visible light laser. The red light (wavelength is 635nm, 650nm and 660 nm) is taken as visible light, and plays a key role in prompting an operator of a specific laser light emitting position, simulating a cutting path, coaxially referencing and adjusting a light beam and the like in the operation process of the laser.
For the cutting process, the coaxiality of the nozzle outlet hole and the laser beam is one of the important factors affecting the cutting quality. If the nozzle and the laser are not coaxial, the cutting section can be affected, so that the section cutting effect is inconsistent, and under severe conditions, the laser can strike the nozzle, so that the nozzle heats and burns out. So that coaxial testing is required. Conventional coaxiality detection generally uses transparent adhesive tape to emit light at a point of a focal point 0 and emit light at a point of + -5, so that the optical paths are adjusted to be coaxial. The mode is simple to operate, but an operator needs to expose hands under the nozzle, the spot-firing operation process has negative influence on the safety of the operator, and personal injury can be even caused by light leakage in the operation process under severe conditions.
The existing fiber laser has a complex structure, basically adopts a multi-pump output mode from a beam combiner to a resonant cavity for final output, and the transmission path of red light and the coaxiality of laser cannot be directly guaranteed to be implemented, so that the problem is particularly remarkable in four-axis dimming.
Disclosure of Invention
The utility model provides a laser cutting head aiming at the problems that the existing red light and laser cannot be coaxial and the like.
In order to achieve the above purpose, the technical scheme adopted by the utility model is that the laser cutting head comprises a cutting head body, wherein the cutting head body comprises a collimating lens and a focusing lens, the cutting head body comprises a reflecting lens and a red light component, laser passing through the collimating lens and red light emitted from the red light component are emitted to the reflecting lens, after the effect of the reflecting lens, the laser and the red light enter the focusing lens, and the optical axis of the red light and the optical axis of the laser after entering the focusing lens are coaxial.
Preferably, the red light component comprises a red light head and a red light collimating mirror, and the red light emitted from the red light head passes through the red light collimating mirror and then is emitted to the reflecting mirror.
Preferably, the red light component further comprises a fixing seat and a red light fixing lens seat, the red light component is fixed on the cutting head body through the fixing seat, a red light through hole is formed in the fixing seat, the red light head is arranged at one end of the red light through hole, the red light collimating lens is arranged at the other end of the red light through hole through the red light fixing lens seat, and red light emitted from the red light head passes through the red light collimating lens and then is emitted to the reflecting lens.
Preferably, the reflecting lens is obliquely arranged at the communication position of the collimating lens barrel and the focusing lens barrel, and the red light head, the red light collimating lens and the focusing lens are coaxially arranged; the laser is reflected by the surface of the reflector plate and enters the focusing lens, and the red light emitted by the red light head passes through the red light collimating lens and then is emitted to the reflector plate, and the red light passes through the reflector plate and then enters the focusing lens.
Preferably, the collimating lens and the focusing lens are coaxially arranged; the laser passes through the reflecting mirror plate and then enters the focusing mirror plate, the red light emitted by the red light head passes through the red light collimating mirror and then is emitted to the reflecting mirror plate, and the red light is reflected by the surface of the reflecting mirror plate and then enters the focusing mirror plate.
Preferably, the cutting head body comprises a cutting head base, a collimating lens barrel and a focusing lens barrel are enclosed in the cutting head base, the collimating lens barrel and the focusing lens barrel are communicated with each other and are vertically arranged, the collimating lens is arranged in the collimating lens barrel through a collimating lens seat, and the focusing lens is arranged in the focusing lens barrel through a focusing lens seat.
Preferably, a through hole is formed in the middle of the focusing lens seat, and the focusing lens is mounted on the through hole through a focusing lens box; two adjacent first through holes are formed in the side wall of the focusing lens base, an elastic plunger is arranged in the first through holes, the end portion of the elastic plunger is in butt joint with the side wall of the focusing lens box, the elastic plunger can give force to the focusing lens box towards the center of the focusing lens base, a second through hole is formed in the position, opposite to the first through holes, of the focusing lens base, an adjusting jackscrew is arranged in the second through hole, and the adjusting jackscrew can move in the second through hole to butt the side wall of the focusing lens box.
Preferably, the second through hole is a threaded hole, threads are arranged on the outer side of the adjusting jackscrew, and the adjusting jackscrew is in threaded connection with the second through hole.
Preferably, the device further comprises a nozzle, wherein the nozzle is arranged at the end part of the focusing lens barrel, and the coaxial red light and laser light after entering the focusing lens are emitted through the nozzle.
Preferably, the cutter head further comprises a QBH connector, wherein one end of the QBH connector is connected with QBH, and the other end of the QBH connector is connected with the cutter head body.
The beneficial effects of the utility model are as follows:
1. the cutting head of the utility model is coaxially adjusted independently: through design ruddiness module, integrate to the cutting head on, realize the coaxial adjustment before the cutting, guarantee the coaxial of light path, have efficient, the high advantage of integrated level, can effectively solve among the prior art fiber laser ware ruddiness and the different coaxial problem of laser, the four-axis problem of adjusting luminance to and avoid the personal injury that light leak and misoperation brought.
2. The laser output of the utility model has high brightness: by designing the single pump laser with power and single pump output, high energy density is realized, devices such as a pump beam combiner and the like are saved, and the cost and transmission loss of the devices are reduced.
Drawings
In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a cross-sectional view of a laser cutting head according to the present utility model.
Fig. 2 is an enlarged schematic view of the red light assembly according to the present utility model.
Fig. 3 is a light path diagram of the light path transmission process of the present utility model.
Fig. 4 is an optical path diagram of an optical path transmission process according to another embodiment of the present utility model.
Fig. 5 is a cross-sectional profile view of a focusing lens holder according to the present utility model.
Fig. 6 is a partial side cross-sectional view of a focusing lens holder according to the present utility model.
In the figure: 1. the cutting head comprises a cutting head body, 2, QBH connectors, 3, QBH,4, a collimating lens, 5, a reflecting lens, 6, a focusing lens, 7, a red light component, 8, a red light head, 9, a red light collimating lens, 10, a head base, 11, a fixing seat, 12, a red light fixing lens seat, 13, a collimating lens seat, 14, a focusing lens seat, 15, a focusing lens box, 16, an elastic plunger, 17, an adjusting jackscrew, 18, an upper wear pad, 19, a lower wear pad, 20 and a nozzle.
Detailed Description
In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.
As shown in fig. 1 to 6, in the present embodiment, the laser cutting head provided by the present utility model includes a cutting head body 1 and a QBH connector 2, one end of the QBH connector 2 is connected to a QBH3, the other end of the QBH connector 2 is connected to the cutting head body 1, the cutting head body 1 includes a collimating lens 4 and a focusing lens 6, and the cutting head body 1 further includes a reflecting lens 5 and a red light component 7; the laser passing through the collimating lens 4 and the red light emitted from the red light component 7 are both emitted to the reflecting lens 5, the laser and the red light enter the focusing lens 6 after the effect of the reflecting lens 5, and the optical axis of the red light and the optical axis of the laser after the laser and the red light enter the focusing lens 6 are coaxial. The cutting head body 1 comprises a cutting head base 10, and the QBH joint 2 is connected to the cutting head base 10 through a square flange interface after being positioned by an annular positioning step, so that the coaxiality of laser output by a laser output head is ensured; the collimator lens 4 can collimate and shape the emitted laser light into a parallel beam.
As shown in fig. 2, the red light component 7 includes a red light head 8 and a red light collimator lens 9, and red light emitted from the red light head 8 passes through the red light collimator lens 9 and then is emitted to the reflecting mirror plate 5. Specifically, the red light component 7 further comprises a fixing seat 11 and a red light fixing lens seat 12, the red light component 7 is fixed on the cutting head body 1 through the fixing seat 11, a red light through hole is formed in the fixing seat 11, the red light head 8 is arranged at one end of the red light through hole, the red light head 8 and the fixing seat 11 can be connected in a positioning mode through the front end, the red light collimating lens 9 is arranged at the other end of the red light through hole through the red light fixing lens seat 12, and the red light fixing lens seat 12 can be connected on the fixing seat 11 through a front end spigot and threads. The red light collimator 9 can collimate and shape the red light emitted from the red light head 8 into parallel light beams.
In the embodiment shown in fig. 3, the reflecting lens 5 is obliquely arranged at the communication position of the collimating lens barrel and the focusing lens barrel, and the red light head 8 and the red light collimating lens 9 are coaxially arranged with the focusing lens 6; the laser is reflected by the surface of the reflector 5 and enters the focusing lens 6, and the red light emitted from the red light head 8 passes through the red light collimating lens 9 and then is emitted to the reflector 5, and the red light passes through the reflector 5 and then enters the focusing lens 6. In this embodiment, in order to ensure that the reflection mirror 5 can reflect laser light and pass red light, the surface of the reflection mirror 5 is treated by vacuum coating, so that the reflectance of the reflection mirror 5 to the laser wave band of 1064/1080nm is about 99.9%, and the reflection mirror 5 has high transmittance to the red light wave band of 630-660 nm.
In the embodiment shown in fig. 4, the collimating lens 4 is arranged coaxially with the focusing lens 6; the laser passes through the reflecting mirror 5 and then enters the focusing mirror 6, and the red light emitted from the red light head 8 passes through the red light collimating mirror 9 and then is emitted to the reflecting mirror 5, and the red light is reflected by the surface of the reflecting mirror 5 and then enters the focusing mirror 6. In this embodiment, the reflection mirror 5 is processed to have high transmittance for the 1064/1080nm laser band and high reflectivity for the 630-660 nm red band, so as to ensure that the reflection mirror 5 can reflect red light and pass laser light.
As shown in fig. 1, the inside of the cutting head base 10 encloses a collimating lens barrel and a focusing lens barrel which are mutually communicated and vertically arranged, the collimating lens 4 is arranged in the collimating lens barrel through a collimating lens seat 13, and the focusing lens 6 is arranged in the focusing lens barrel through a focusing lens seat 14.
Specifically, as shown in fig. 5, a through hole is formed in the middle of the focusing lens seat 14, and the focusing lens 6 is mounted on the through hole through the focusing lens box 15; two adjacent first through holes are formed in the side wall of the focusing mirror base 14, an elastic plunger 16 is arranged in the first through holes, the end portion of the elastic plunger 16 is in butt joint with the side wall of the focusing mirror box 15, the elastic plunger 16 can give force to the focusing mirror box 15 towards the center of the focusing mirror base 14, a second through hole is formed in the position, opposite to the first through hole, of the focusing mirror base 14, an adjusting jackscrew 17 is arranged in the second through hole, and the adjusting jackscrew 17 can move in the second through hole to butt the side wall of the focusing mirror box 15. Two elastic plungers 16 and two adjusting jackscrews 17 are arranged in the figure, and connecting lines between the two pairs of elastic plungers 16 and the adjusting jackscrews 17 which are oppositely arranged are perpendicular to each other. When adjustment of the focusing lens 6 in the radial direction is required, fine adjustment can be performed directly by adjusting the jack screw 17. Wherein, the second through hole can be directly set up to the screw hole to set up the screw thread in the outside of adjusting jackscrew 17, make adjust jackscrew 17 and second through hole threaded connection, so when needs are adjusted, can directly twist and adjust the jackscrew can.
As shown in fig. 6, upper wear plates 18 and lower wear plates 19 are respectively disposed on the upper and lower sides of the focusing lens holder 14. The upper wear pad 18 and the lower wear pad 19 can be made of ceramic materials, silicon wafer materials or the like.
As shown in fig. 1, the laser focusing lens further comprises a nozzle 20, wherein the nozzle 20 is arranged at the end part of the focusing lens barrel, and the coaxial red light and laser light are emitted through the nozzle 20 after entering the focusing lens 6. The page can be demolishd and install the optical core detection device with nozzle 20, and the location is unanimous with the installation conical surface of nozzle 20, through the transmission of above-mentioned light path, can realize the focus and the formation of image of red light facula, and then can carry out the position identification according to the light intensity of ruddiness, compares the circular profile of nozzle 20 installation conical surface department, judges the axiality of both, realizes the coaxial regulation visualization and the accuracy of light path.
As shown in fig. 3 to 4, the working principle of the laser cutting head is as follows:
fig. 3 is a light path diagram of a light path transmission process of the present utility model, in which laser firstly passes through a collimating lens 4 to shape divergent optical fibers into parallel beams, and then the parallel beams are transmitted to a reflecting lens 5, the reflecting lens 5 reflects the collimated parallel beams onto a focusing lens 6, so as to realize 90 ° steering of the laser light path and ensure energy transmission; the red light emitted by the red light head 8 is collimated and shaped into parallel light beams by the red light collimating lens 9, and the parallel light beams are transmitted to the focusing lens 6 through the reflecting lens 5, so that the coaxial transmission of the red light optical axis and the laser optical axis is realized.
Fig. 4 is a light path diagram of another light path transmission process of the present utility model, in which laser light firstly passes through a collimating lens 4 to shape divergent optical fibers into parallel beams, then the parallel beams are transmitted to a reflecting lens 5, and the laser light directly passes through the reflecting lens 5 and is emitted onto a focusing lens 6; the red light emitted by the red light head 8 is collimated and shaped into parallel light beams by the red light collimating lens 9, and the parallel light beams are reflected by the reflecting lens 5, so that the 90-degree steering of a red light path is realized, and the energy transmission is ensured. In this way, the coaxial transfer of the red light axis and the laser light axis is achieved.
The beneficial effects of the utility model are as follows:
1. the cutting head of the utility model is coaxially adjusted independently: through design ruddiness subassembly 7, integrate to cutting head body 1 on, realize the coaxial adjustment before the cutting, guarantee the coaxial of light path, have efficient, the high advantage of integrated level, can effectively solve among the prior art fiber laser ware ruddiness and the different coaxial problem of laser, the four-axis problem of adjusting luminance to and avoid the personal injury that light leak and misoperation brought.
2. The laser output of the utility model has high brightness, and by designing the power single-pump laser and single-pump output, high energy density is realized, meanwhile, devices such as a pump beam combiner and the like are saved, and the cost and transmission loss of the devices are reduced.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides a laser cutting head, includes the cutting head body, the cutting head body includes collimation lens and focusing lens, its characterized in that, the cutting head body includes reflector plate and ruddiness subassembly, the laser that passes the collimation lens with from ruddiness that ruddiness subassembly sent all launches to the reflector plate, through behind the effect of reflector plate laser and ruddiness get into focusing lens, and get into ruddiness optical axis and laser optical axis after the focusing lens are coaxial.
2. The laser cutting head of claim 1 wherein the red light assembly includes a red light head and a red light collimating mirror, the red light emitted from the red light head passing through the red light collimating mirror and then being emitted to the reflecting mirror.
3. The laser cutting head of claim 2, wherein the red light assembly further comprises a fixing seat and a red light fixing lens seat, the red light assembly is fixed on the cutting head body through the fixing seat, a red light through hole is formed in the fixing seat, the red light head is arranged at one end of the red light through hole, and the red light collimating lens is arranged at the other end of the red light through hole through the red light fixing lens seat.
4. A laser cutting head according to claim 2 or 3, wherein the collimating optic is arranged coaxially with the focusing optic; the laser passes through the reflecting mirror plate and then enters the focusing mirror plate, the red light emitted by the red light head passes through the red light collimating mirror and then is emitted to the reflecting mirror plate, and the red light is reflected by the surface of the reflecting mirror plate and then enters the focusing mirror plate.
5. A laser cutting head according to claim 2 or 3, wherein the cutting head body comprises a cutting head base, the interior of the cutting head base encloses a collimating lens barrel and a focusing lens barrel which are mutually communicated and vertically arranged, the collimating lens is arranged in the collimating lens barrel through a collimating lens holder, and the focusing lens is arranged in the focusing lens barrel through a focusing lens holder.
6. The laser cutting head according to claim 5, wherein the reflecting mirror is obliquely arranged at a communication position between the collimating lens barrel and the focusing lens barrel, and the red light head, the red light collimating lens and the focusing lens are coaxially arranged; the laser is reflected by the surface of the reflector plate and enters the focusing lens, and the red light emitted by the red light head passes through the red light collimating lens and then is emitted to the reflector plate, and the red light passes through the reflector plate and then enters the focusing lens.
7. The laser cutting head according to claim 5, wherein a through hole is formed in the middle of the focusing lens seat, and the focusing lens is mounted on the through hole through a focusing lens box; two adjacent first through holes are formed in the side wall of the focusing lens base, an elastic plunger is arranged in the first through holes, the end portion of the elastic plunger is in butt joint with the side wall of the focusing lens box, the elastic plunger can give force to the focusing lens box towards the center of the focusing lens base, a second through hole is formed in the position, opposite to the first through holes, of the focusing lens base, an adjusting jackscrew is arranged in the second through hole, and the adjusting jackscrew can move in the second through hole to butt the side wall of the focusing lens box.
8. The laser cutting head of claim 7, wherein the second through hole is configured as a threaded hole, and the outer side of the adjusting jackscrew is provided with threads, and the adjusting jackscrew is in threaded connection with the second through hole.
9. The laser cutting head of claim 5, further comprising a nozzle disposed at an end of the focusing barrel through which the coaxial red and laser lights are emitted after entering the focusing lens.
10. The laser cutting head of claim 1, further comprising a QBH connector, wherein one end of the QBH connector is connected to the QBH, and wherein the other end of the QBH connector is connected to the cutting head body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223282994.XU CN219542024U (en) | 2022-12-05 | 2022-12-05 | Laser cutting head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223282994.XU CN219542024U (en) | 2022-12-05 | 2022-12-05 | Laser cutting head |
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| Publication Number | Publication Date |
|---|---|
| CN219542024U true CN219542024U (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202223282994.XU Active CN219542024U (en) | 2022-12-05 | 2022-12-05 | Laser cutting head |
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| CN (1) | CN219542024U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116944667A (en) * | 2023-09-20 | 2023-10-27 | 江苏迅镭激光科技有限公司 | Laser focus centering mechanism and centering method |
-
2022
- 2022-12-05 CN CN202223282994.XU patent/CN219542024U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116944667A (en) * | 2023-09-20 | 2023-10-27 | 江苏迅镭激光科技有限公司 | Laser focus centering mechanism and centering method |
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