CN214769754U - Laser cutting head with automatic focusing function - Google Patents
Laser cutting head with automatic focusing function Download PDFInfo
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- CN214769754U CN214769754U CN202120750233.9U CN202120750233U CN214769754U CN 214769754 U CN214769754 U CN 214769754U CN 202120750233 U CN202120750233 U CN 202120750233U CN 214769754 U CN214769754 U CN 214769754U
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Abstract
The utility model discloses a laser cutting head with automatic focusing function, including controller, casing and light-emitting piece, the light-emitting piece is fixed in the casing, collimation protective glass, collimating mirror, focusing protective glass and cutting protective glass are arranged in proper order below the light-emitting piece in the casing, two opposite surfaces of collimating mirror and focusing mirror are convex mirrors; the focusing structure is connected with the controller and fixedly connected with the shell. The utility model discloses set up the focusing structure, the focusing structure can drive the collimating mirror and rise or descend to adjust the distance between collimating mirror and the focusing mirror, reach the effect of adjusting the focus height. Automatic focusing is realized, the working efficiency is improved, and the risk of being burnt in manual focusing is avoided.
Description
Technical Field
The utility model relates to a laser cutting equipment technical field, more specifically relates to a laser cutting head with automatic focusing function.
Background
Since the advent of laser, it has been widely used in the fields of science and technology, military, medical treatment, industrial processing and communications due to its characteristics of high brightness, high directivity, high monochromaticity and high coherence. With the progress and development of laser technology in recent years, the peak output power laser technology of lasers is continuously broken through, high-power lasers are rapidly developed, among various high-power lasers, fiber lasers are rapidly developed with the advantages of good beam quality, small size, high conversion efficiency, good heat dissipation effect and the like, and large-scale application and industrial and military fields are started.
In recent years, the rapid development of the laser industry leads to the localization of lasers. The domestic demand for laser cutting machine tools is rapidly increased, and among various laser cutting machine tools, the optical fiber laser cutting machine tool is deeply favored by consumers due to numerous advantages. The optical fiber laser cutting machine is advanced cutting equipment, can be used for processing various metals and non-metals by virtue of the characteristics of convenience in maintenance, low consumption cost and excellent cutting section, and particularly has the advantages of capability of processing materials with high hardness, high brittleness and high melting point and the like, so that the increase of the demand is particularly remarkable.
In laser cutting processing, because the thickness of a product to be cut is different, the laser cutting head needs to be refocused every time a new product is processed. The existing laser cutting head is manually focused, which is not only troublesome and laborious; and laser has high energy and is the invisible light, still exists because of the possibility that the maloperation leads to being burnt in manual focusing process, causes the bodily injury to operating personnel.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a laser cutting head with automatic focusing function to provide following technical scheme:
a laser cutting head with an automatic focusing function comprises a controller, a shell and a light emitting piece, wherein the light emitting piece is fixed in the shell, a collimating protective lens, a collimating lens, a focusing protective lens and a cutting protective lens are sequentially arranged below the light emitting piece in the shell, and two opposite surfaces of the collimating lens and the focusing lens are convex lenses; the focusing structure is connected with the controller and fixedly connected with the shell.
Further, the focusing structure comprises a motor, a coupler and an adjusting screw rod, the motor is connected with the controller, the motor is fixed on the shell, a rotating shaft of the motor is fixedly connected with the adjusting screw rod through the coupler, a screw rod nut is sleeved on the adjusting screw rod, and a sliding block is fixedly arranged on the screw rod nut; the collimating lens is arranged on the collimating lens base, and the collimating lens base is fixedly connected with the sliding block.
Further, the motor is fixedly connected with the shell through a motor fixing block, and the middle part and the end part of the adjusting screw rod are respectively in limit connection with the shell through bearings.
Furthermore, a flow guide ring is arranged below the cutting protective glass and fixedly connected with the shell, and a plurality of air holes penetrating through the side wall of the flow guide ring are circumferentially distributed on the side wall of the flow guide ring.
Furthermore, the air holes are distributed on the side wall of the flow guide ring at equal intervals, and a cutting gas interface is arranged on the shell and communicated with the air holes.
Furthermore, the collimating protective lens is fixed on the collimating lens frame, the focusing lens is fixed on the focusing lens frame, the focusing protective lens is fixed on the focusing protective lens frame, the cutting protective lens is fixed on the cutting protective lens frame, and the collimating lens frame, the focusing protective lens frame and the cutting protective lens frame are respectively connected with the shell in a drawer-type detachable limiting manner.
Furthermore, a first handle is arranged on the focusing mirror bracket, and a second handle is arranged on the cutting protection mirror bracket.
Further, a sensor assembly is fixedly arranged below the flow guide ring, the sensor assembly comprises a sensor and a ceramic ring, the sensor is connected with the controller, and the sensor is fixedly connected with the shell.
Furthermore, the ceramic ring is fixedly connected with the shell, and the shell is provided with a cooling gas interface which is connected with the ceramic ring.
Compared with the prior art, the utility model discloses possess following beneficial effect:
1. the utility model discloses set up the focusing structure, the focusing structure can drive the collimating mirror and rise or descend to adjust the distance between collimating mirror and the focusing mirror, reach the effect of adjusting the focus height. Automatic focusing is realized, the working efficiency is improved, and the risk of being burnt in manual focusing is avoided.
2. The utility model discloses set up the water conservancy diversion ring, make the cutting gas that blows off more smooth-going to reduce and eliminate because the harmful effects that the cutting gas turbulence brought.
3. The utility model discloses well collimation protective glass, focus lens, focus protective glass and cutting protective glass all adopt the connected mode of drawer type with the casing, when certain lens is polluted, pull out the lens that the drawer can change and correspond.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of the focusing structure of the present invention;
FIG. 3 is a focusing schematic diagram of the present invention;
fig. 4 is a schematic view of the structure of the flow guide ring of the present invention.
Detailed Description
To further illustrate the technical means and technical effects of the present invention, the following describes a preferred embodiment of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the 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.
As shown in fig. 1 to 4, a laser cutting head with an automatic focusing function comprises a controller, a housing 1 and a light emitting member 23, wherein the light emitting member 23 is fixed in the housing 1. A collimating protective lens 2, a collimating lens 3, a focusing lens 4, a focusing protective lens 5 and a cutting protective lens 6 are sequentially arranged below the light-emitting component 23 in the shell 1, wherein two opposite surfaces of the collimating lens 3 and the focusing lens 4 are convex lenses. Specifically, 4 slots are respectively arranged at corresponding positions of a casing 1, a collimation protective lens 2, a focusing lens 4, a focusing protective lens 5 and a cutting protective lens 6, the collimation protective lens 2 is fixed on a collimation protective lens frame, the focusing lens 4 is fixed on a focusing lens frame, the focusing protective lens 5 is fixed on the focusing protective lens frame, and the cutting protective lens 6 is fixed on the cutting protective lens frame; the collimation protection mirror bracket, the focusing protection mirror bracket and the cutting protection mirror bracket are respectively used as drawers to be inserted into corresponding slots in the shell 1 and are respectively connected with the shell 1 in a detachable limiting manner. Therefore, when a certain lens needs to be replaced, the corresponding spectacle frame is only required to be pulled out from the shell, and then the lens can be replaced.
In order to facilitate the extraction of the focusing lens 4 and the cutting protection lens 6, a first handle 7 is arranged on the focusing lens frame, and a second handle 8 is arranged on the cutting protection lens frame. It will be appreciated that in other embodiments, a pull handle may be provided on the alignment and focus protection frames, if desired.
The fixed focusing structure that is equipped with 3 elevating movement of drive collimating mirror of side of casing 1, the focusing structure includes motor 9, shaft coupling 10 and accommodate the lead screw 11, motor 9 links to each other with the controller, motor 9 passes through motor fixed block 12 and casing 1 fixed connection, shaft coupling 10 and accommodate the lead screw 11 fixed connection are passed through in motor 9's pivot, accommodate the lead screw 11 the middle part and the tip respectively through the spacing fixed connection of bearing and casing 1, the cover is equipped with screw-nut 13 on the accommodate the lead screw 11, the fixed slider 14 that is equipped with on the screw-nut 13. The collimating lens 3 is fixed on the collimating lens frame 15, the collimating lens frame 15 is placed on the collimating lens base 16 in a limiting mode, and the collimating lens base 16 is fixedly connected with the sliding block 14. When focusing is needed, the controller drives the motor 9 to rotate, the motor 9 drives the coupler 10 and the adjusting screw rod 11 to rotate, the screw rod nut 13 is driven to move up and down, the slide block 14 and the collimating lens frame 15 are driven to ascend or descend, and therefore the distance between the collimating lens 3 and the focusing lens 4 is adjusted, and the purpose of focusing is achieved. A collimating mirror cover plate 17 is arranged on the casing 1 at a position corresponding to the collimating mirror 3, and the collimating mirror cover plate 17 is fixedly connected with the casing 1 through screws. When the collimating lens 3 needs to be replaced, the collimating lens frame 15 and the collimating lens 3 can be taken out from the collimating lens base 16 by unscrewing the screws.
In order to make the cutting gas smoother, the influence of turbulence generated by the cutting gas on the cutting work is reduced, so that the laser cutting head works more stably. A guide ring 18 fixedly connected with the shell 1 is arranged below the cutting protective mirror 6, a plurality of air holes 19 penetrating through the side edge of the guide ring 18 are circumferentially distributed on the side wall of the guide ring 18, all the air holes 19 are distributed at equal intervals, all the air holes 19 just form a closed circle, a cutting gas interface 20 is arranged on the shell 1, and the cutting gas interface 20 is communicated with the air holes 19. During operation, the cutting gas interface 20 is externally connected with cutting gas, and the cutting gas enters the laser cutting head from the gas holes 19 distributed on the circumference, so that the entering gas flow is ensured to be more stable and smooth.
The sensor assembly 21 is fixedly arranged below the guide ring 18, the sensor assembly 21 comprises a sensor and a ceramic ring, the sensor is connected with the controller and fixedly connected with the shell 1, and the sensor is used for detecting the distance between the laser cutting head and a product to be cut. In order to timely cool the ceramic ring in operation, the housing 1 is provided with the cooling gas interface 22, the cooling gas interface 22 is connected with the ceramic ring, and during operation, the cooling gas interface 22 is externally connected with cooling gas to cool the ceramic ring, so that the cutting stability is improved.
The working principle is as follows: after the laser cutting head and the product to be cut are respectively installed and fixed, the sensor detects the distance between the laser cutting head and the product to be cut and feeds data information back to the controller; the controller drives the focusing structure to start working and focus to a proper position; the light emitting component 23 emits laser which sequentially passes through the collimating protective lens 2, the collimating lens 3, the focusing lens 4, the focusing protective lens 5 and the cutting protective lens 6 and then is emitted to a product to be cut to cut the product; when the light emitting piece 23 emits laser, the cooling gas and the cutting gas externally connected with the cooling gas interface 22 and the cutting gas interface 20 are simultaneously blown out, the cooling gas can cool the ceramic ring, and the cutting gas penetrates through the gas holes 19 on the flow guide ring 18 and then cuts a product to be cut together with 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.
Claims (9)
1. A laser cutting head with an automatic focusing function comprises a controller, a shell and a light emitting piece, wherein the light emitting piece is fixed in the shell;
the focusing structure is connected with the controller and fixedly connected with the shell.
2. The laser cutting head with automatic focusing function of claim 1, wherein the focusing structure comprises a motor, a coupler and an adjusting screw rod, the motor is connected with the controller, the motor is fixed on the housing, a rotating shaft of the motor is fixedly connected with the adjusting screw rod through the coupler, a screw nut is sleeved on the adjusting screw rod, and a sliding block is fixedly arranged on the screw nut;
the collimating lens is arranged on the collimating lens base, and the collimating lens base is fixedly connected with the sliding block.
3. The laser cutting head with the automatic focusing function of claim 2, wherein the motor is fixedly connected with the housing through a motor fixing block, and the middle part and the end part of the adjusting screw rod are respectively connected with the housing in a limiting way through bearings.
4. The laser cutting head with automatic focusing function of claim 3 characterized in that a guide ring is arranged under the cutting protective lens, the guide ring is fixedly connected with the shell, and a plurality of air holes penetrating through the side wall of the guide ring are circumferentially distributed on the side wall of the guide ring.
5. The laser cutting head with automatic focusing function of claim 4, characterized in that the air holes are distributed on the side wall of the guide ring at equal intervals, and the housing is provided with a cutting gas port, which is communicated with the air holes.
6. The laser cutting head with automatic focusing function according to claim 5, characterized in that the collimating protective lens is fixed on a collimating lens holder, the focusing lens is fixed on a focusing lens holder, the focusing protective lens is fixed on a focusing protective lens holder, the cutting protective lens is fixed on a cutting protective lens holder, and the collimating lens holder, the focusing protective lens holder and the cutting protective lens holder are respectively connected with the shell in a drawer-type detachable limit manner.
7. The laser cutting head with automatic focusing function of claim 6, characterized in that the focusing frame is provided with a first handle, and the cutting protection frame is provided with a second handle.
8. The laser cutting head with automatic focusing function of claim 7, characterized in that a sensor assembly is fixedly arranged below the guide ring, the sensor assembly comprises a sensor and a ceramic ring, the sensor is connected with the controller, and the sensor is fixedly connected with the housing.
9. The laser cutting head with automatic focusing function of claim 8, characterized in that the ceramic ring is fixedly connected with the housing, the housing is provided with a cooling gas interface, and the cooling gas interface is connected with the ceramic ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120750233.9U CN214769754U (en) | 2021-04-13 | 2021-04-13 | Laser cutting head with automatic focusing function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120750233.9U CN214769754U (en) | 2021-04-13 | 2021-04-13 | Laser cutting head with automatic focusing function |
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| CN214769754U true CN214769754U (en) | 2021-11-19 |
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| CN202120750233.9U Active CN214769754U (en) | 2021-04-13 | 2021-04-13 | Laser cutting head with automatic focusing function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221322A1 (en) * | 2022-05-18 | 2023-11-23 | 上海嘉强自动化技术有限公司 | Optical system and laser welding device thereof |
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2021
- 2021-04-13 CN CN202120750233.9U patent/CN214769754U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023221322A1 (en) * | 2022-05-18 | 2023-11-23 | 上海嘉强自动化技术有限公司 | Optical system and laser welding device thereof |
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