CN218426205U - Laser surface scanning device and laser equipment - Google Patents
Laser surface scanning device and laser equipment Download PDFInfo
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- CN218426205U CN218426205U CN202222509341.4U CN202222509341U CN218426205U CN 218426205 U CN218426205 U CN 218426205U CN 202222509341 U CN202222509341 U CN 202222509341U CN 218426205 U CN218426205 U CN 218426205U
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Abstract
The application discloses laser surface scanning device and laser equipment. The laser plane scanning device includes: the laser device comprises a shell, wherein a laser inlet is formed in the shell; the rotating mirror is rotatably arranged in the shell and comprises a plurality of reflecting surfaces which are sequentially arranged along the circumferential direction of the rotating mirror, and each reflecting surface is parallel to the axial direction of the rotating mirror; the reflecting surface is used for reflecting the laser to the scanning plane; and the rotating mirror position detection unit is arranged in the shell and used for detecting the position of the rotating mirror. The laser surface scanning device is provided with the rotating mirror position detection unit, the rotating mirror position detection unit can accurately detect the position of the rotating mirror, and transmits a detected signal to the controller, so that the controller can judge the current position of the rotating mirror, and the laser light emitting time is controlled by combining a command given by an operating system, and the accurate control and operation of the whole scanning system are realized.
Description
Technical Field
The application relates to the technical field of laser processing, in particular to a laser plane scanning device and laser equipment.
Background
In the present stage, the application of laser is more and more extensive, for example, laser marking, laser 3D printing, laser radar, etc. The application of the above laser generally requires that the reflection and scanning of the laser be accomplished by a scanning device. The surface scanning device is a device that can perform repeated linear scanning, and reflects laser light to and moves on a machining plane. However, the general surface scanning device generally has the problem of low scanning precision.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the application provides a laser surface scanning device and laser equipment, which can realize high-precision surface scanning.
To achieve the purpose, the following technical scheme is adopted in the application:
a laser facet scanning apparatus comprising:
the laser device comprises a shell, wherein a laser inlet is formed in the shell;
the rotating mirror is rotatably arranged in the shell and comprises a plurality of reflecting surfaces which are sequentially arranged along the circumferential direction of the rotating mirror, and each reflecting surface is parallel to the axial direction of the rotating mirror; the reflecting surface is used for reflecting the laser to the scanning plane;
and the rotating mirror position detection unit is arranged in the shell and is used for detecting the position of the rotating mirror.
As an alternative to the above laser plane scanning device, the turning mirror position detection unit includes:
the light-emitting element is arranged on one side of the rotating mirror and used for emitting detection light to the rotating mirror;
and the receiving module is used for receiving the detection light reflected by the rotating mirror.
As an alternative to the above laser plane scanning device, the laser plane scanning device further includes:
the first reflector is arranged on a reflection light path of the rotating mirror for reflecting the detection light and is used for reflecting the detection light reflected by the rotating mirror to the receiving module;
the second reflecting mirror is arranged on one side of the rotating mirror, corresponds to the laser inlet and is used for reflecting the laser incident from the laser inlet onto the rotating mirror.
As an alternative to the above laser surface scanning device, the light emitting element is a laser diode.
As an alternative to the above laser surface scanning apparatus, the laser surface scanning apparatus further includes:
the mounting block is arranged in the shell, arranged on one side of the rotating mirror and arranged along the axial direction of the rotating mirror; the light-emitting element, the first reflector and the second reflector are all arranged on the mounting block.
As an alternative of the laser plane scanning device, a first through hole arranged along the axial direction of the rotating mirror and a second through hole communicated with the first through hole and leading to the rotating mirror are arranged on the mounting block;
the second reflector is arranged at the communication position of the first through hole and the second through hole; the light-emitting element and the first reflector are arranged at the top of the mounting block.
As an alternative to the above laser plane scanning device, the laser plane scanning device further includes:
the first driving piece is connected with the rotating mirror and used for driving the rotating mirror to rotate;
as an alternative to the above laser surface scanning apparatus, the laser surface scanning apparatus further includes:
and the second driving piece is connected with the second reflector and used for driving the second reflector to rotate.
As an alternative to the above laser plane scanning device, the laser plane scanning device further includes:
the field lens is arranged on the shell, and the laser reflected by the rotating mirror penetrates through the field lens and then is emitted.
A laser apparatus comprising a laser plane scanning device as described above.
The embodiment of the application has the advantages that: the laser is moved on the scanning plane by the rotation of the rotating mirror, so that the surface scanning is realized. And the rotating mirror position detection unit is arranged and can accurately detect the current position of the rotating mirror and transmit the detected signal to the controller, so that the controller can judge the position of the rotating mirror, and the laser light emitting time is controlled by combining the command given by the operating system, thereby realizing the accurate control and operation of the whole scanning system and finishing the high-precision surface scanning.
Drawings
FIG. 1 is a schematic diagram of a laser scanning apparatus according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an internal structure of a laser scanning apparatus according to an embodiment of the present application;
FIG. 3 is a schematic view of the structure of FIG. 2 from another perspective;
FIG. 4 is a schematic view of the structure of FIG. 2 from another perspective;
FIG. 5 is a side view schematic of the structure of FIG. 2;
FIG. 6 is a schematic view of an assembly of a mounting block and a light emitting device, a first reflector and a second reflector according to an embodiment of the present application;
FIG. 7 is a simplified schematic diagram of a laser reflection path in an embodiment of the present application;
FIG. 8 is a simplified diagram of a reflection path of a detection light for detecting a position of a turning mirror according to an embodiment of the present disclosure.
In the figure:
100. a laser plane scanning device;
110. a housing; 111. a laser inlet; 112. a handle; 113. a cylindrical shield;
120. rotating the mirror; 121. a first axis of rotation; 122. a second reflector; 1221. a second driving member; 1222. a second axis of rotation; 123. a field lens; 124. a first driving member; 125. a reflective surface; 125a, a first reflecting surface; 125b, a second reflective surface;
130. a mirror position detection unit; 131. a light emitting element; 132. a receiving module; 133. a first reflector; 1331. mounting a sheet; 1332. an arc-shaped hole; 134. a reflection module;
140. mounting blocks; 141. a first through hole; 142. a second via.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some of the structures associated with the present application are shown in the drawings, not all of them.
In the description of the present application, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; may be directly connected or indirectly connected through an intermediate. The meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between.
In the description of the present embodiment, the terms "upper", "lower", and the like are used based on the orientations and positional relationships shown in the drawings only for convenience of description and simplification of operation, and do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and operate, and thus should not be construed as limiting the present application. The terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.
The embodiment of the application provides a laser plane scanning device. Referring to fig. 1 to 3, the laser plane scanning apparatus 100 includes a housing 110, a rotating mirror 120 and a rotating mirror position detecting unit 130. As shown in fig. 1, the housing 110 is provided with a laser inlet 111, and laser light emitted from an external laser enters the housing 110 through the laser inlet 111. As shown in fig. 2 and 3, the turning mirror 120 is rotatably provided in the housing 110, the axis of rotation of the turning mirror 120 is a first axis of rotation 121, and the first axis of rotation 121 is in the horizontal direction. For convenience of description, the first direction, the second direction, and the third direction are defined in the embodiments of the present application. The first direction, the second direction and the third direction are vertical to each other. As shown in fig. 1, the first direction, the second direction, and the third direction may correspond to an X direction, a Y direction, and a Z direction of the spatial coordinate system, respectively. The first direction, the second direction, and the third direction may also be understood as a left-right direction, a front-back direction, and an up-down direction of the laser plane scanning apparatus 100.
As shown in fig. 2 to 4, the rotating mirror 120 includes a plurality of reflecting surfaces 125 sequentially arranged along a circumferential direction thereof, each reflecting surface 125 being parallel to an axial direction of the rotating mirror 120, i.e., an extending direction of the first rotating axis 121. The reflective surface 125 is used to reflect the laser light onto the scan plane. The turning mirror 120 can also be said to be a polygonal prism. Referring to the simplified schematic diagram of fig. 7, the laser light is incident on the reflective surface 125 of the rotating mirror 120 and is reflected by the reflective surface 125 onto the scan plane. The laser moves linearly on the scanning plane by the rotation of the rotating mirror 120, so as to realize the scanning of the laser. The laser is scanned on the scanning plane, and laser processing operations such as marking, cutting and the like can be carried out on the scanning plane.
As shown in fig. 3, a turning mirror position detection unit 130 is provided in the housing 110, and the turning mirror position detection unit 130 is used to detect the position of the turning mirror 120. The rotating mirror position detecting unit 130 is connected to the controller of the laser scanning device 100, and the rotating mirror position detecting unit 130 sends a detection result to the controller after detecting the current position state of the rotating mirror 120. The controller controls the laser light emitting time according to the detected current position of the rotating mirror 120 and the command given by the operating system, so that the accurate control and operation of the whole scanning system are realized, and the high-precision surface scanning is completed.
The turning mirror position detection unit 130 may be any detection unit capable of detecting the position of the turning mirror 120. In one embodiment, as shown in fig. 3, the turning mirror position detecting unit 130 includes a light emitting device 131 and a receiving module 132. The light emitting element 131 is disposed at one side of the turning mirror 120 so that light emitted from the light emitting element 131 can be incident on the reflecting surface 125 of the turning mirror 120, and the light emitting element 131 is used to emit detection light to the turning mirror 120. The receiving module 132 is used for receiving the detecting light reflected by the rotating mirror 120. As shown in the simplified schematic diagram of fig. 8, the detection light emitted from the light emitting element 131 is incident on the rotating mirror 120, reflected by the rotating mirror 120 and reflected to the receiving module 132, and the receiving module 132 determines the position of the rotating mirror 120 according to the received detection light.
As shown in fig. 3 and 8, the laser plane scanning apparatus 100 may further include a first mirror 133. Referring to fig. 8, the first reflecting mirror 133 is disposed on a reflection light path of the detecting light reflected by the rotating mirror 120, and the first reflecting mirror 133 is used for reflecting the detecting light reflected by the rotating mirror 120 to the receiving module 132, so that the receiving module 132 can receive the detecting light. The first reflector 133 and the light emitting device 131 are disposed on the same side of the rotating mirror 120 along the first direction, as shown in fig. 8, the detection light emitted by the light emitting device 131 strikes the rotating mirror 120, is reflected by the rotating mirror 120, reflects the reflection light onto the first reflector 133, and then reflects the detection light onto the receiving module 132 through the first reflector 133. Specifically, as shown in fig. 3, a reflection module 134 may be further disposed between the first reflector 133 and the receiving module 132, and the first reflector 133 reflects the light to the reflection module 134, and then reflects the light to the receiving module 132 through the reflection module 134.
The advantage of providing the first mirror 133 here is to facilitate the installation and arrangement of the receiving module 132. As shown in fig. 3 and 4, the first reflector 133 is provided to reflect the detection light of the light emitting element 131, so that the installation position of the receiving module 132 is relatively free. If the first reflector 133 is not provided, the receiving module 132 needs to be disposed on the same side as the light emitting device 131. The first reflector 133 can be flexibly installed to the receiving module 132 by using a relatively empty space in the housing 110, and if the first reflector 133 is not installed, the receiving module 132 needs to be installed at the position where the first reflector 133 is installed in fig. 3, and the receiving module 132 is bulky and inconvenient to install at this position.
In one embodiment, the light emitting device 131 may be a laser diode. The receiving module 132 is a red sensor.
In one embodiment, as shown in fig. 3 and 7, the laser plane scanning apparatus 100 may further include a second mirror 122. The second reflecting mirror 122 is disposed at one side of the rotating mirror 120, and with reference to fig. 1, 2 and 3, the second reflecting mirror 122 is disposed corresponding to the laser entrance 111 on the housing 110, and the second reflecting mirror 122 is used for reflecting the laser light incident from the laser entrance 111 onto the rotating mirror 120, and then the rotating mirror 120 reflects the laser light onto the scanning plane. Specifically, the laser light reflected by the rotating mirror 120 passes through the field lens 123 and then is incident on the scanning plane. As shown in fig. 1, the field lens 123 is provided on the housing 110, and as shown in fig. 2 and 7, the laser light reflected by the turning mirror 120 passes through the field lens 123 and is emitted. The provision of the second mirror 122 facilitates the overall structural design of the laser plane scanning apparatus 100. Referring to fig. 1 and 2, after the second reflecting mirror 122 is disposed to reflect the laser light to the rotating mirror 120, an incident direction of the laser light incident into the housing 110 may be parallel to an axial direction of the rotating mirror 120, that is, an incident direction of the laser light from the laser light inlet 111 may be along the axial direction of the rotating mirror 120, and after the laser light is incident from the laser light inlet 111 along the axial direction of the rotating mirror 120, the laser light is reflected by the second reflecting mirror 122 to the rotating mirror 120 along a radial direction of the rotating mirror 120. If the second reflecting mirror 122 is not provided, the laser light needs to be incident on the rotating mirror 120 from the radial direction of the rotating mirror 120, which is not convenient in the overall layout and design, and is not favorable for the interfacing of the laser surface scanning apparatus 100 with an external laser.
As shown in FIG. 3, the laser plane scanning apparatus 100 may further include a first driving member 124. The first driving member 124 is connected to the rotating mirror 120 for driving the rotating mirror 120 to rotate for scanning. The first driving member 124 may be a motor or other driving mechanism capable of achieving continuous rotation. The first driving member 124 drives the rotating mirror 120 to rotate, so that the rotating angle of the rotating mirror 120 can be precisely controlled, and linear scanning is realized.
Referring to fig. 3 and 7, the laser plane scanning apparatus 100 may further include a second driving member 1221. The second driving member 1221 is connected to the second reflector 122 for driving the second reflector 122 to rotate. As shown in fig. 3 and 7, the second reflecting mirror 122 can rotate around a second rotation axis 1222, and the second rotation axis 1222 is vertical. The second driving member 1221 is arranged to drive the rotation of the second mirror 122 in combination with the rotation of the turning mirror 120, such that the laser beam may be moved in multiple dimensions, while the rotation of the second mirror 122 may also compensate for inaccuracies and image distortions of the turning mirror 120. The second driving member 1221 may employ a galvanometer motor.
It is understood that the second mirror 122 may be configured as a stationary second mirror 122, or a combination of a stationary second mirror 122 and a rotatable second mirror 122 may be used.
In one embodiment, as shown in FIG. 2, the laser plane scanning apparatus 100 may further include a mounting block 140. The mounting block 140 is disposed in the case 110 and at one side of the turn mirror 120. The mounting block 140 is disposed along an axial direction of the turn mirror 120, and the light emitting element 131, the first reflecting mirror 133 and the second reflecting mirror 122 are all disposed on the mounting block 140. The mounting block 140 is provided to facilitate mounting of the light emitting element 131, the first reflecting mirror 133 and the second reflecting mirror 122.
Referring to fig. 2 and 6, the mounting block 140 is provided with a first through hole 141 and a second through hole 142. The first through hole 141 is provided in the axial direction of the turn mirror 120, the second through hole 142 communicates with the first through hole 141, and the second through hole 142 opens to the turn mirror 120, so that the laser light can be incident on the turn mirror 120 from the second through hole 142. As shown in fig. 6, the second reflector 122 is disposed at a position where the first through hole 141 communicates with the second through hole 142, the laser beam enters the first through hole 141 corresponding to the laser entrance 111 after entering from the laser entrance 111 on the housing 110, the laser beam is emitted to the second reflector 122 from the first through hole 141, and the second reflector 122 reflects the laser beam to reflect the laser beam to the rotating mirror 120 from the second through hole 142. As shown in fig. 6, the light emitting element 131 and the first reflecting mirror 133 are disposed on the top of the mounting block 140. The second driving member 1221 is also disposed at the top of the mounting block 140, and the driving end of the second driving member 1221 passes through the top of the mounting block 140 to the communication position of the second through hole 142 and the first through hole 141, so as to drive the second mirror 122 disposed at the communication position of the second through hole 142 and the first through hole 141.
In the above design, the first through hole 141 and the second through hole 142 are opened on the mounting block 140, the second reflector 122 is disposed at the communication position between the second through hole 142 and the first through hole 141, and the light emitting device 131 and the first reflector 133 are disposed at the top of the mounting block 140, so that the second reflector 122, the light emitting device 131 and the first reflector 133 have a certain height difference, and the reflection path of the laser and the reflection path of the detection light path at the position of the detection rotating mirror 120 have a height difference, and are staggered in height, thereby avoiding mutual interference. Referring to fig. 4, the laser beam and the detection beam for detecting the position of the rotating mirror 120 may be incident on different sides of the rotating mirror 120, the detection beam emitted from the light emitting element 131 is incident on the first reflecting surface 125a of the rotating mirror 120, and the laser beam for processing is incident on the second reflecting surface 125b of the rotating mirror 120.
As shown in fig. 6, the first reflecting mirror 133 may be mounted on the mounting block 140 by a mounting piece 1331. The mounting piece 1331 may be designed in an L-shape including two sides perpendicular to each other, one of which is used to mount the first reflecting mirror 133 and the other of which is used to be connected with the mounting block 140.
With continued reference to fig. 6, an arc-shaped hole 1332 may be formed in the mounting piece 1331, and a screw can be inserted through the arc-shaped hole 1332 and locked to the mounting block 140 to fix the mounting piece 1331 to the mounting block 140. The installation piece 1331 can be adjusted in position along the arc-shaped hole 1332, and after the installation piece is adjusted, the installation piece is locked by the screw. This allows the position of the mounting piece 1331, and thus the position of the first mirror 133, to be adjusted.
In the embodiment of the present application, the whole laser plane scanning apparatus 100 is integrated in the housing 110, so that the whole laser plane scanning apparatus 100 is more modularized, and is convenient to disassemble, assemble and move.
Referring to FIG. 1, a handle 112 may also be disposed on the housing 110 to facilitate movement of the laser scanning apparatus 100.
As shown in FIG. 1, the front end of the housing 110 may be further provided with a cylindrical shield 113, as shown in FIG. 2, the cylindrical shield 113 being adapted to cover the first driving member 124. Since the first driving member 124 is long, in order to avoid making the housing 110 large to accommodate the first driving member 124, a cylindrical protection cover 113 having a shape adapted to the first driving member 124 may be provided at the front end of the housing 110 to cover the first driving member 124.
In the embodiment of the present application, the working process of the laser plane scanning apparatus 100 is as follows:
the light emitting element 131 emits detection light, the detection light is incident on the rotating mirror 120 and is reflected to the first reflecting mirror 133 by the rotating mirror 120, the first reflecting mirror 133 reflects the detection light to the receiving module 132, the receiving module 132 receives the detection light and sends a signal to the controller, and the controller judges the current position of the rotating mirror 120;
the first driving member 124 drives the rotating mirror 120 to rotate;
the controller controls the laser light emitting time according to the current position of the rotating mirror 120 and a command given by combining an operating system;
laser emitted by an external laser enters the first through hole 141 of the mounting block 140 from the laser inlet 111 of the housing 110 and then is incident on the second reflecting mirror 122, the second reflecting mirror 122 reflects the laser to the rotating mirror 120 along the second through hole 142 of the mounting block 140, the rotating mirror 120 reflects the laser, and the laser passes through the field lens 123 and then is incident on a scanning plane; the first driving member 124 drives the rotating mirror 120 to rotate, so as to realize laser scanning.
The embodiment of the application also provides laser equipment. The laser apparatus includes the above laser plane scanning device 100. Since the laser apparatus in the embodiment of the present application includes the laser plane scanning device 100, the laser apparatus at least has the beneficial effects of the laser plane scanning device 100, and the detailed description thereof is omitted here.
It should be understood that the above examples are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the present application. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.
Claims (10)
1. A laser facet scanning apparatus, comprising:
the laser device comprises a shell, wherein a laser inlet is formed in the shell;
the rotating mirror is rotatably arranged in the shell and comprises a plurality of reflecting surfaces which are sequentially arranged along the circumferential direction of the rotating mirror, and each reflecting surface is parallel to the axial direction of the rotating mirror; the reflecting surface is used for reflecting the laser to the scanning plane;
and the rotating mirror position detection unit is arranged in the shell and is used for detecting the position of the rotating mirror.
2. The laser plane scanning apparatus of claim 1, wherein the turning mirror position detection unit includes:
the light-emitting element is arranged on one side of the rotating mirror and used for emitting detection light to the rotating mirror;
and the receiving module is used for receiving the detection light reflected by the rotating mirror.
3. The laser plane scanning apparatus of claim 2, further comprising:
the first reflector is arranged on a reflection light path of the rotating mirror for reflecting the detection light and is used for reflecting the detection light reflected by the rotating mirror to the receiving module;
the second reflecting mirror is arranged on one side of the rotating mirror, corresponds to the laser inlet and is used for reflecting the laser incident from the laser inlet onto the rotating mirror.
4. The laser surface scanning device of claim 2, wherein the light emitting element is a laser diode.
5. The laser plane scanning apparatus of claim 3, further comprising:
the mounting block is arranged in the shell, arranged on one side of the rotating mirror and arranged along the axial direction of the rotating mirror; the light-emitting element, the first reflector and the second reflector are all arranged on the mounting block.
6. The laser surface scanning device according to claim 5, wherein the mounting block is provided with a first through hole arranged along the axial direction of the rotating mirror, and a second through hole communicated with the first through hole and leading to the rotating mirror;
the second reflector is arranged at the communication position of the first through hole and the second through hole; the light-emitting element and the first reflector are arranged at the top of the mounting block.
7. The laser plane scanning apparatus of claim 1, further comprising:
the first driving piece is connected with the rotating mirror and used for driving the rotating mirror to rotate.
8. The laser plane scanning apparatus of claim 3, further comprising:
and the second driving piece is connected with the second reflector and used for driving the second reflector to rotate.
9. The laser plane scanning apparatus of any of claims 1 to 8, further comprising:
the field lens is arranged on the shell, and the laser reflected by the rotating mirror penetrates through the field lens and then is emitted.
10. A laser device comprising the laser plane scanning apparatus of any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222509341.4U CN218426205U (en) | 2022-09-22 | 2022-09-22 | Laser surface scanning device and laser equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222509341.4U CN218426205U (en) | 2022-09-22 | 2022-09-22 | Laser surface scanning device and laser equipment |
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| Publication Number | Publication Date |
|---|---|
| CN218426205U true CN218426205U (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222509341.4U Active CN218426205U (en) | 2022-09-22 | 2022-09-22 | Laser surface scanning device and laser equipment |
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| CN (1) | CN218426205U (en) |
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Effective date of registration: 20231130 Address after: 518000 Building 401, Building 4, Chongqing Road, Han's Laser Industrial Park, Heping Community, Fuyong Street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: SHENZHEN HAN'S SCANNER S&T Co.,Ltd. Address before: No.9988, Shennan Avenue, Nanshan District, Shenzhen City, Guangdong Province Patentee before: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. Patentee before: SHENZHEN HAN'S SCANNER S&T Co.,Ltd. |
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