CN210848834U - Automatic focusing device of fiber laser - Google Patents
Automatic focusing device of fiber laser Download PDFInfo
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- CN210848834U CN210848834U CN201921614877.4U CN201921614877U CN210848834U CN 210848834 U CN210848834 U CN 210848834U CN 201921614877 U CN201921614877 U CN 201921614877U CN 210848834 U CN210848834 U CN 210848834U
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- fiber laser
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Abstract
The utility model belongs to the field of fiber laser design, in particular to an automatic focusing device of a fiber laser, which comprises a shell (1), a focusing barrel (2), an adjusting cover (3), a lifting motor (4), a cutting nozzle (5), a focusing controller (6), a focusing lens (21), a protective lens (22), an adjusting cover through groove (31), a motor shaft (41), a reinforcing block (42), a cross rod (43), a cutting nozzle (5) and a distance sensor (51); the utility model discloses rational in infrastructure, through the distance of measuring cutting torch (5) in real time and waiting to cut work piece cutting part apart from inductor (51), the up-and-down motion of focusing control ware (6) real time control focusing lens (21) for the focus remains throughout in the exact position.
Description
Technical Field
The utility model belongs to fiber laser design field specifically discloses an automatic focusing device of fiber laser.
Background
Laser cutting is to irradiate a workpiece with a focused high-power-density laser beam to quickly melt, vaporize and ablate the irradiated material or reach a burning point, and simultaneously blow off the molten material by means of a high-speed airflow coaxial with the beam, thereby realizing the cutting of the workpiece. Laser cutting is one of the thermal cutting methods. The laser beam is focused to a very small spot, which results in a very high power density at the focus. At this time, the heat input by the light beam far exceeds the part reflected, conducted or diffused by the material, and the material is quickly heated to the vaporization degree and is vaporized to form a hole. The hole is continuously formed into a slit with a narrow width as the beam and the material move linearly relative to each other. The cut edge is affected little by heat and there is substantially no deformation of the workpiece. Therefore, in the center of laser cutting technology, the adjustment of focal length is very critical, the focusing method of the existing laser cutting head is manual focusing, and particularly when thick plates are cut, the negative focus perforation positive focus cutting needs to be frequently manually adjusted, which is very troublesome. Such an operation is disadvantageous in improving the efficiency of laser cutting.
SUMMERY OF THE UTILITY MODEL
Not enough more than to, the utility model discloses an automatic focusing device of fiber laser.
The technical scheme of the utility model as follows:
an automatic focusing device of an optical fiber laser comprises a shell, a focusing barrel, an adjusting cover, a lifting motor, a cutting nozzle, a focusing controller, a focusing lens, a protective lens, an adjusting cover through groove, a motor shaft, a reinforcing block, a cross rod, a cutting nozzle and a distance sensor; the adjusting cover is positioned in the center of the inner part of the shell, and the upper end of the adjusting cover is fixedly connected with the top of the shell; the focusing barrel is positioned in the adjusting cover, the focusing lens is arranged above the focusing barrel, and the protective lens is positioned below the focusing barrel; two adjusting cover through grooves are vertically formed in the left side and the right side of the adjusting cover; the two lifting motors are respectively positioned on two sides of the adjusting cover, and the upper ends of the lifting motors are fixedly connected with the top inside the shell; the lifting motor extends out of the motor shaft downwards; a reinforcing block is fixedly arranged at the lower end of the motor shaft; a cross bar is transversely and fixedly connected with the reinforcing block; the cross rod penetrates through the through groove of the adjusting cover and is fixedly connected with the cylinder wall of the focusing cylinder; the cutting nozzle is positioned below the adjusting cover, is in a hollow conical shape and protrudes out of the shell; the distance sensor is arranged at the lower end of the cutting nozzle; the focusing controller is positioned on the side of the outer part of the shell; the focusing controller is electrically connected with the lifting motor and the distance sensor. The distance between the cutting nozzle and the cutting part of the workpiece to be cut can be measured in real time through the distance sensor, and a worker operates the focusing controller according to the distance information to electrically adjust the upper position and the lower position of the focusing lens so as to keep correct focusing.
Further, in the automatic focusing device of the optical fiber laser, the focusing controller is provided with a liquid crystal display screen. The liquid crystal display is used, so that the information quantity is answered, the display effect is good, and the information quantity is clear at a glance.
Further, in the automatic focusing device of the optical fiber laser, the liquid crystal display screen is a touch display screen. And the touch screen is used, so that the operation is visual and convenient.
Further, in the automatic focusing device of the optical fiber laser, the lifting motor is a stepping motor. The stepping motor has better position precision and motion repeatability and excellent corresponding start-stop and reverse rotation, and has no electric brush, so that the service life is very long; is very suitable for being used in a focusing device.
Further, in the automatic focusing device of the optical fiber laser, a converter is arranged in the focusing controller. The distance signal obtained by the distance sensor is converted into the change of the capacitor in the converter by using the converter, the signal generated by the change of the capacitor enters the focusing controller after being amplified, and the signal is converted into a signal for controlling the lifting motor to move up and down so as to drive the focusing lens to move up and down, thereby realizing automatic focusing.
Furthermore, according to the automatic focusing device of the optical fiber laser, the through groove of the adjusting cover is further provided with two groups of limiting blocks, and each group of limiting blocks is respectively positioned above and below the cross rod. Set up the stopper, prevent that the focusing section of thick bamboo from damaging.
Further, in the automatic focusing device of the optical fiber laser, the shell is made of an aluminum alloy material. The aluminum alloy material is not easy to rust and damage, has long service life and good electromagnetic shielding performance.
According to the above technical scheme, the utility model discloses following beneficial effect has:
the utility model discloses a can survey the cutting torch in real time apart from the inductor and wait to cut the distance at work piece cutting part, through the signal conversion of converter, the focusing controller can be automatic adjust focusing lens's upper and lower position, realizes auto focus, adjusts accurately and in real time, has saved a large amount of manpowers simultaneously.
Drawings
Fig. 1 is an overall schematic view of embodiment 1 of the present invention;
fig. 2 is an overall schematic view of embodiment 2 of the present invention;
wherein: the device comprises a shell 1, a focusing barrel 2, an adjusting cover 3, a lifting motor 4, a cutting nozzle 5, a focusing controller 6, a focusing lens 21, a protective lens 22, an adjusting cover through groove 31, a limiting block 32, a motor shaft 41, a reinforcing block 42, a cross bar 43, a distance sensor 51, a liquid crystal display screen 61 and a converter 62.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
As shown in fig. 1, the automatic focusing device of a fiber laser comprises a housing 1, a focusing barrel 2, an adjusting cover 3, a lifting motor 4, a cutting nozzle 5, a focusing controller 6, a focusing lens 21, a protective mirror 22, an adjusting cover through groove 31, a motor shaft 41, a reinforcing block 42, a cross bar 43, a cutting nozzle 5 and a distance sensor 51; the adjusting cover 3 is positioned in the center of the inside of the shell 1, and the upper end of the adjusting cover 3 is fixedly connected with the top of the shell 1; the focusing barrel 2 is positioned in the adjusting cover 3, the focusing lens 21 is arranged above the focusing barrel 2, and the protective lens 22 is positioned below the focusing barrel 2; two adjusting cover through grooves 31 are vertically formed in the left side and the right side of the adjusting cover 3; the two lifting motors 4 are respectively positioned on two sides of the adjusting cover 3, and the upper ends of the lifting motors 4 are fixedly connected with the top of the interior of the shell 1; the lifting motor 4 extends out of the motor shaft 41 downwards; a reinforcing block 42 is fixedly arranged at the lower end of the motor shaft 41; a cross bar 43 is transversely fixedly connected with the reinforcing block 42; the cross rod 43 penetrates through the through groove 31 of the adjusting cover and is fixedly connected with the wall of the focusing barrel 2; the cutting nozzle 5 is positioned below the adjusting cover 3, is in a hollow conical shape and protrudes out of the shell 1; the distance sensor 51 is arranged at the lower end of the cutting nozzle 5; the focusing controller 6 is positioned on the side of the outside of the shell 1; the focusing controller 6 is electrically connected with the lifting motor 4 and the distance sensor 51.
When in work: laser passes through focusing lens 21 and jets out from cutting torch 5 after focusing, and when the thickness of work piece changed, the change of distance was just transmitted the data transmission that changes to focusing controller 6 to distance inductor 51, and operating personnel operates focusing controller 6 according to the data, and the lift of motor shaft 41 is driven to electronic control elevator motor 4, and further the lift of indirect drive focusing barrel 2, and then makes focusing lens 21 and the distance on work piece surface change, realizes the focus adjustment.
Example 2
Fig. 2 is an automatic focusing device of a fiber laser, which comprises a shell 1, a focusing barrel 2, an adjusting cover 3, a lifting motor 4, a cutting torch 5, a focusing controller 6, a focusing lens 21, a protective lens 22, an adjusting cover through groove 31, a limiting block 32, a motor shaft 41, a reinforcing block 42, a cross bar 43, a cutting torch 5, a distance sensor 51, a liquid crystal display screen 61 and a converter 62; the adjusting cover 3 is positioned in the center of the inside of the shell 1, and the upper end of the adjusting cover 3 is fixedly connected with the top of the shell 1; the focusing barrel 2 is positioned in the adjusting cover 3, the focusing lens 21 is arranged above the focusing barrel 2, and the protective lens 22 is positioned below the focusing barrel 2; two adjusting cover through grooves 31 are vertically formed in the left side and the right side of the adjusting cover 3; the two lifting motors 4 are respectively positioned on two sides of the adjusting cover 3, and the upper ends of the lifting motors 4 are fixedly connected with the top of the interior of the shell 1; the lifting motor 4 extends out of the motor shaft 41 downwards; a reinforcing block 42 is fixedly arranged at the lower end of the motor shaft 41; a cross bar 43 is transversely fixedly connected with the reinforcing block 42; the cross rod 43 penetrates through the through groove 31 of the adjusting cover and is fixedly connected with the wall of the focusing barrel 2; the cutting nozzle 5 is positioned below the adjusting cover 3, is in a hollow conical shape and protrudes out of the shell 1; the distance sensor 51 is arranged at the lower end of the cutting nozzle 5; the focusing controller 6 is positioned on the side of the outside of the shell 1; the focusing controller 6 is electrically connected with the lifting motor 4 and the distance sensor 51; particularly, the focusing controller 6 is provided with a liquid crystal display screen 61, and further, has a touch function; further, the lifting motor 4 is a stepping motor; in particular, the focusing controller 6 also has a converter 62 inside; it should be noted that two groups of limiting blocks 32 are further disposed on the through groove 31 of the adjusting cover, and each group of limiting blocks 32 is respectively located above and below the cross bar 43; furthermore, the housing 1 is made of aluminum alloy.
When in work: the laser is emitted from the cutting nozzle 5 after being focused by the focusing lens 21, when the thickness of the workpiece changes, the distance sensor 51 can measure the distance between the cutting nozzle 5 and the cutting part of the workpiece to be cut in real time, and the focusing controller 6 can automatically adjust the upper and lower positions of the focusing lens 21 by adjusting the lifting motor 4 through signal conversion of the converter 62, so that automatic focusing is realized.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention can not be limited thereby, and the simple equivalent changes and modifications made according to the claims and the utility model also belong to the protection scope of the present invention.
Claims (7)
1. An automatic focusing device of an optical fiber laser is characterized by comprising a shell (1), a focusing barrel (2), an adjusting cover (3), a lifting motor (4), a cutting nozzle (5), a focusing controller (6), a focusing lens (21), a protective lens (22), an adjusting cover through groove (31), a motor shaft (41), a reinforcing block (42), a cross bar (43), a cutting nozzle (5) and a distance sensor (51); the adjusting cover (3) is positioned in the center of the interior of the shell (1), and the upper end of the adjusting cover (3) is fixedly connected with the top of the shell (1); the focusing barrel (2) is positioned in the adjusting cover (3), the focusing lens (21) is arranged above the focusing barrel (2), and the protective lens (22) is positioned below the focusing barrel (2); two adjusting cover through grooves (31) are vertically formed in the left side and the right side of the adjusting cover (3); the two lifting motors (4) are respectively positioned on two sides of the adjusting cover (3), and the upper ends of the lifting motors (4) are fixedly connected with the top inside the shell (1); the lifting motor (4) extends out of a motor shaft (41) downwards; a reinforcing block (42) is fixedly arranged at the lower end of the motor shaft (41); a cross bar (43) is transversely and fixedly connected with the reinforcing block (42); the cross rod (43) penetrates through the through groove (31) of the adjusting cover and is fixedly connected with the wall of the focusing barrel (2); the cutting nozzle (5) is positioned below the adjusting cover (3), is in a hollow conical shape and protrudes out of the shell (1); the distance sensor (51) is arranged at the lower end of the cutting nozzle (5); the focusing controller (6) is positioned on the side of the outside of the shell (1); the focusing controller (6) is electrically connected with the lifting motor (4) and the distance sensor (51).
2. The automatic focusing device of an optical fiber laser as claimed in claim 1, wherein a liquid crystal display (61) is provided on the focusing controller (6).
3. An autofocus arrangement for a fibre laser as claimed in claim 2, wherein the liquid crystal display (61) is a touch screen display.
4. An autofocus arrangement for a fibre laser as claimed in claim 1, wherein the lift motor (4) is a stepper motor.
5. An autofocus arrangement for a fibre laser as claimed in claim 1, characterised in that the focus control (6) also incorporates a switch (62).
6. The automatic focusing device of the optical fiber laser as claimed in claim 1, wherein two sets of limiting blocks (32) are further disposed on the adjusting cover through slot (31), and each set of limiting blocks (32) is respectively located above and below the cross bar (43).
7. An autofocus arrangement for a fibre laser as claimed in claim 1, wherein the housing (1) is of aluminium alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921614877.4U CN210848834U (en) | 2019-09-26 | 2019-09-26 | Automatic focusing device of fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921614877.4U CN210848834U (en) | 2019-09-26 | 2019-09-26 | Automatic focusing device of fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210848834U true CN210848834U (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921614877.4U Expired - Fee Related CN210848834U (en) | 2019-09-26 | 2019-09-26 | Automatic focusing device of fiber laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210848834U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112372159A (en) * | 2021-01-06 | 2021-02-19 | 于向红 | Felt cloth laser cutting machine |
| CN112756805A (en) * | 2020-12-29 | 2021-05-07 | 江苏领翰智能激光科技有限公司 | Self-adaptive focusing laser cutting head for optical fiber laser |
-
2019
- 2019-09-26 CN CN201921614877.4U patent/CN210848834U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756805A (en) * | 2020-12-29 | 2021-05-07 | 江苏领翰智能激光科技有限公司 | Self-adaptive focusing laser cutting head for optical fiber laser |
| CN112372159A (en) * | 2021-01-06 | 2021-02-19 | 于向红 | Felt cloth laser cutting machine |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200626 Termination date: 20210926 |
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| CF01 | Termination of patent right due to non-payment of annual fee |