CN209842193U - Cylindrical mirror positioning structure of laser line light source - Google Patents
Cylindrical mirror positioning structure of laser line light source Download PDFInfo
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- CN209842193U CN209842193U CN201920770047.4U CN201920770047U CN209842193U CN 209842193 U CN209842193 U CN 209842193U CN 201920770047 U CN201920770047 U CN 201920770047U CN 209842193 U CN209842193 U CN 209842193U
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Abstract
The utility model discloses a cylindrical mirror positioning structure of a laser line light source, which comprises a mounting groove arranged on the front end surface of a laser line light source shell, wherein the mounting groove is communicated with a light through hole which axially penetrates through the front end surface of the shell; locating grooves for installing the cylindrical mirror are formed in the installation groove and located on two sides of the light through hole, the locating grooves can be in the shape that two sides are non-parallel locating edges and are in point contact with the cylindrical mirror, or one side is the locating edge, the other side is overlapped with the side wall of the installation groove to form a locating surface, and the locating edge and the locating surface are in point contact and line contact with the cylindrical mirror respectively. The utility model discloses a mounting groove structure, the debugging, the location of the cylindrical mirror of being convenient for, when improving the debugging precision and the stability of laser line light source, promote the line quality of cylindrical mirror, more do benefit to automated production.
Description
Technical Field
The utility model relates to a laser light source technical field, concretely relates to cylindrical mirror location structure of laser line source.
Background
The laser line light source is a so-called laser line light source which is formed by converting a laser collimation point light source into a plane light curtain by using the cylindrical mirror imaging principle and irradiating an object with the plane light curtain.
The plane light curtain can be used for working occasions such as vertical and horizontal plane reference measurement, linear positioning, laser bar code scanning, laser linear array mapping scanning, electronic white board plane light curtain, security alarm and the like.
The cylindrical mirror is an important line-forming optical element in various laser line light sources, light rays are projected to form a plane light curtain after passing through the cylindrical mirror, and a cylinder of the cylindrical mirror is required to be perpendicular to an optical axis of a laser collimation point light source so as to obtain a high-precision plane light curtain; therefore, the positioning and debugging mode of the cylindrical mirror has a decisive influence on the precision and stability of the plane light curtain.
The traditional cylindrical mirror positioning structure adopts a pair of saw slits which are symmetrically distributed relative to the center of an optical axis to form a seesaw structure, the cylindrical mirror is fixed in a mounting hole on the seesaw by using an adhesive, and the perpendicularity of the cylindrical mirror relative to the optical axis is debugged and positioned by using screws of the saw slits on two sides. In addition, the structural scheme is difficult to realize automatic debugging, and has long training period, low debugging efficiency and long production period of staff.
The cylindrical mirror is fixed by a spring pressing sheet in a manner of fixing the cylindrical mirror, and the cylindrical mirror is easy to disassemble and repair but difficult to realize automatic installation and debugging.
Disclosure of Invention
To the problem that exists among the above-mentioned prior art, the utility model aims at providing a cylindrical mirror location structure of laser line light source to in the debugging of cylindrical mirror, location, when improving the debugging precision and the stability of laser line light source, promote the line quality of cylindrical mirror, more do benefit to automated production.
In order to realize the task, the utility model discloses a following technical scheme:
a cylindrical mirror positioning structure of a laser line source comprises a mounting groove formed in the front end face of a laser line source shell, wherein the mounting groove is communicated with a light through hole formed in the front end face of the shell in the axial direction;
positioning grooves for mounting a cylindrical mirror are formed in the mounting groove on two sides of the light through hole, wherein the positioning grooves comprise the following two types:
i, the upper edges of two sides of each positioning groove are two non-parallel positioning edges, and the positioning edges are in point contact with the circumferences of two end faces of a cylindrical mirror;
II, the upper edge of one side of each positioning groove is a positioning edge, and the positioning edge is in point contact with the circumferences of two end surfaces of the cylindrical mirror; the other side of the positioning groove and the side wall of the mounting groove are overlapped to form a positioning surface, and the positioning surface is in line contact with the cylindrical surface of the cylindrical mirror.
Furthermore, for the configuration I and the configuration II, the width of the positioning groove is gradually reduced along the direction far away from the light through hole, and the end with the larger width of the positioning groove is penetrated through the light through hole.
Further, for configuration I, the positioning edges of the upper edges at the two sides of the positioning groove are symmetrical with each other.
Further, for the configuration I and the configuration II, the positioning groove is an arc groove, a trapezoid groove or other polygonal grooves, the positioning groove and the bottom surface of the mounting groove penetrate to form the positioning edge or the positioning surface, and the cylindrical mirror is in point contact with the positioning edge and in line contact with the positioning surface when being mounted.
Furthermore, the mounting groove is a strip-shaped groove, traverses the front end face of the shell or is positioned in the front end face, and is provided with a pair of side walls which are parallel to each other.
Further, for the configuration II, the positioning edge of the positioning groove is inclined to the side wall of the mounting groove.
Further, for configuration I, the included angle between the two positioning edges of the positioning groove is 0-20 degrees.
Further, for configuration II, the included angle between the positioning edge at one side of the positioning groove and the positioning surface at the other side is 0-20 degrees.
Furthermore, first dispensing grooves are symmetrically distributed on the edges of the two sides of the mounting groove.
The utility model has the following technical characteristics:
1. the utility model discloses the dovetail groove of symmetric distribution has been seted up on the bottom surface in the cylindrical mirror mounting groove of terminal surface before the light source casing, the polygonal groove of variable radius's arc groove or other shapes, thereby positioning edge and the locating surface that is used for installing the cylindrical mirror have been formed in making the cylindrical mirror mounting groove, form the point contact between the both sides terminal surface of positioning edge and cylindrical mirror, the locating surface forms the line contact with the cylindrical surface of cylindrical mirror, cylindrical mirror axial displacement debugging in-process can the accurate adjustment cylindrical mirror axis be 90 contained angles with the optical axis of light source, thereby make the precision adjustment reach 0 error condition, this structure also can make the cylindrical mirror stable positioning simultaneously.
2. After the cylindrical mirror is debugged and positioned, four radial point positions of the end surfaces on the two sides of the cylindrical mirror are fixed by using quick positioning glue, the four point positions are quickly fixed, so that the gluing stress borne by the cylindrical mirror is balanced, the debugging precision variation is very small, and the cylindrical mirror is fixed and can bear high and low temperature, falling and other impacts by using slow-curing super glue points in grooves of the end surfaces on the two sides of the cylindrical mirror, so that the requirements of customers can be well met.
3. The utility model discloses a cylindrical mirror location structure can be applied to for example on all kinds of laser line light sources such as a line light source, dotted line light source, cross line light source, has characteristics such as the commonality is good, production and processing is convenient.
Drawings
FIG. 1 is a schematic view of a detent in configuration I (top view of the front face of the housing);
FIG. 2 is a schematic view of a positioning groove in the first configuration, the positioning groove being a circular arc groove;
FIG. 3 is a schematic view of a positioning slot in a dovetail slot in the first configuration;
FIG. 4 is a schematic view of a cylindrical mirror assembled in a detent groove configuration I;
FIG. 5 is a schematic view of a positioning slot in the second configuration;
FIG. 6 is a schematic view of a cylindrical mirror assembled in a second configuration;
the reference numbers in the figures illustrate: the device comprises a shell body 1, a front end face 2, a mounting groove 3, a positioning groove 4, a positioning edge 5, a light through hole 6, a first dispensing groove 7, a cylindrical mirror 8, a second dispensing groove 9 and a positioning face 10.
Detailed Description
The utility model discloses a cylindrical mirror positioning structure of a laser line light source, which comprises a mounting groove 3 arranged on the front end surface 2 of a laser line light source shell 1, wherein the mounting groove 3 is communicated with a light through hole 6 axially arranged in the front end surface of the shell 1; positioning grooves 4 for mounting a cylindrical mirror 8 are formed in the mounting groove 3 at two sides of the light through hole 6, wherein the positioning grooves 4 can have various configurations, including the following two configurations:
i, two unparallel positioning edges 5 are arranged on the upper edges of two sides of each positioning groove 4, and the positioning edges 5 are in point contact with the circumferences of two end faces of a cylindrical mirror 8;
II, a positioning edge 5 is arranged at the upper edge of one side of each positioning groove 4, and the positioning edges 5 are in point contact with the circumferences of two end surfaces of the cylindrical mirror 8; the other side of the positioning groove 4 and the side wall of the mounting groove 3 are overlapped to form a positioning surface 10, and the positioning surface 10 and the cylindrical surface of the cylindrical mirror 8 form line contact.
The laser line light source in the utility model can be, for example, a linear laser line light source, a linear laser point light source, a cross laser line light source and other products, the mounting groove 3 is arranged on the front end surface 2 of the shell 1, under general configuration, after the cylindrical mirror 8 is mounted, the cylindrical mirror 8 should be at least more than 0.05mm exposed out of the front end surface 2; in actual use, the cylindrical mirror 8 may be lower than the front end face 2. The shape of the mounting groove 3 may be various, such as a bar shape (including the case of traversing the front end face 2), a circular shape, or other shapes. A laser collimation point light source is arranged in the laser line light source shell 1, collimation laser beams emitted by the point light source are emitted from the light through hole 6, and after the collimation laser beams penetrate through the cylindrical mirror 8, a plane light curtain is formed through the transmission, refraction and reflection of the cylindrical mirror 8; in order to ensure the precision of the planar light curtain, the cylindrical mirror 8 must be perpendicular to the optical axis of the laser collimation point light source, which requires that the cylindrical mirror 8 can be precisely adjusted and positioned after being installed.
In the scheme, in order to facilitate the positioning and debugging of the cylindrical mirror 8, positioning grooves 4 are formed in the mounting groove 3, and a pair of positioning grooves 4 are distributed on two sides of the light through hole 6; the pair of positioning grooves 4 can be in the same shape, symmetrically distributed and in different shapes; the maximum width of the positioning slot 4 should be smaller than the diameter of the cylindrical mirror 8.
The structure of the present invention will be further described by the following examples.
Example 1
On the basis of the technical scheme, for the configurations I and II, the width of the positioning groove 4 is gradually reduced along the direction far away from the light through hole 6, namely the optical axis direction of the laser line light source, and the end with the larger width of the positioning groove 4 is communicated with the light through hole 6.
As shown in fig. 1 and 5, in this embodiment, the width of the positioning groove 4 refers to the distance between the upper edges of the two sides of the positioning groove 4, i.e., the positioning edges 5, and the width of one end close to the light-passing hole 6 is large and is communicated with the light-passing hole 6, and the width of the other end gradually decreases. The positioning groove 4 is structured such that the cylindrical mirror 8 can slide on the positioning groove 4 to adjust the position.
Example 2
For the configuration I, on the basis of the embodiment 1, the positioning edges 5 of the upper edges at two sides of the positioning groove 4 are not parallel to each other; in this case, the distance between the two positioning edges 5 is varied, so that the cylindrical mirror 8 can slide on the positioning edges 5 without falling into the positioning groove 4.
As a preferred embodiment, the two positioning edges 5 are symmetrical to each other.
As shown in fig. 1, the positioning grooves 4 with a symmetrical structure are adopted, so that the processing and molding are facilitated, and when the cylindrical mirror 8 is adjusted, two sides can move symmetrically, and the stability in the debugging process is ensured. After the cylindrical mirror 8 is placed in the positioning groove 4, the two end surface circumferences of the cylindrical mirror 8 are respectively in point contact with the two positioning edges 5 of the positioning groove 4, and four points on the two end surface circumferences of the cylindrical mirror 8 are in contact with the positioning edges 5; when the cylindrical mirror 8 is debugged, the cylindrical mirror 8 slides along the axial direction of the cylindrical mirror, and the included angle of 90 degrees between the axis of the cylindrical mirror 8 and the optical axis of the laser collimation point light source can be accurately adjusted, so that the linear precision reaches a zero-error state.
Besides this configuration, the two positioning slots 4 may also be asymmetrical, and the positioning edges 5 may also be asymmetrical, for example, the two positioning slots 4 have different lengths or different widths, the positioning edges 5 on both sides have different angles with respect to the side walls of the mounting slot 4, etc.
Example 3
On the basis of embodiment 2, in this embodiment, the positioning groove 4 is an arc groove or a trapezoidal groove, the positioning edge 5 or the positioning surface 10 is formed by the positioning groove 4 and the bottom surface of the mounting groove 3 in a penetrating manner, and the cylindrical mirror 8 is installed in a point contact with the positioning edge 5 and in a line contact with the positioning surface 10.
As shown in fig. 2 to 4, the positioning groove 4 may have various shapes, such as an arc groove shown in fig. 2, where the arc groove refers to a cross section of the positioning groove 4 having an arc-shaped structure; the positioning slot 4 shown in fig. 3 is a trapezoidal slot, i.e. the cross section of the positioning slot 4 has a trapezoidal structure. The two positioning grooves 4 penetrate through the bottom surface of the mounting groove 3 to form a positioning edge 5 in the processing process, and the cylindrical mirror 8 is in point contact with the positioning edge 5 during mounting. The positioning groove 4 with the two shapes has the characteristics of convenient processing and debugging.
Similarly, in the second configuration, the positioning groove 4 may be a circular arc groove or a trapezoidal groove, wherein the positioning surface 10 is formed by the positioning groove 4 and the bottom surface of the mounting groove 3.
In this embodiment, the positioning slot 4 may also have other polygonal shapes, such as a step shape, a circular arc shape, and a combination of trapezoid shapes; the positioning edge 5 and the positioning surface 10 can be formed by the penetration of the positioning groove 4 and the bottom surface of the mounting groove 3.
Example 4
For the configurations i and ii, in the present embodiment, the mounting groove 3 is a strip-shaped groove, the mounting groove 3 traverses the front end surface 2 of the housing 1 or is located in the front end surface 2, and has a pair of side walls parallel to each other, and the side walls may be interrupted by other necessary configurations to form discontinuous side walls, for example, the side walls have structures such as grooves, holes, etc., so that the side walls are not continuous.
The mounting groove 3 is generally processed into a strip-shaped groove during processing, and two ends of the mounting groove 3 can penetrate through the front end surface 2 of the shell 1 or can not penetrate through the mounting groove; the mounting groove 3 is used for controlling the height of the cylindrical mirror 8 exposed out of or sunk into the front end face 2, so that precision debugging and dispensing positioning are facilitated, and meanwhile, the cylindrical mirror 8 can be controlled to radially shake, so that the bonding stress on the cylindrical mirror 8 is balanced. The parallel side walls refer to the opposite side walls of the mounting groove 3 along the length direction.
The mounting groove 3 can be processed into other shapes, such as a circle, an ellipse, etc., according to the actual conditions of the process.
Example 5
In the present embodiment, as shown in fig. 5, the positioning edge 5 of the positioning slot 4 is inclined to the side wall of the mounting groove 3 with respect to configuration ii.
In the positioning groove 4 of the second configuration, the positioning edge 5 on one side of the positioning groove 4 is a bevel edge, i.e. is inclined to the side wall of the mounting groove 3, which is to change the width of the positioning groove 4, so that the pitch position can be adjusted by sliding the cylindrical mirror 8 after being placed in; the other side is overlapped with the side wall of the mounting groove 3 to form a positioning surface 10, namely the side wall of the positioning groove 4 is the side wall of the mounting groove 3; in this configuration, the positioning edge 5 on one side of the positioning groove 4 makes point contact with the circumference of both end faces of the cylindrical mirror 8, while the positioning surface 10 on the other side makes line contact with the cylindrical surface of the cylindrical mirror 8. The cylindrical mirror 8 is mounted as shown in fig. 6.
Example 6
In this embodiment, for configuration i, an included angle α between two positioning edges 5 of the positioning groove 4 is 0 ° to 20 °. The inventor verifies that the cylindrical mirror 8 has high debugging precision speed and good stability in the angle range.
Similarly, for configuration ii, the angle between the positioning edge 5 on one side of the positioning groove 4 and the positioning surface 10 on the other side can also be processed to be 0 ° to 20 °.
Example 7
On the basis of the configuration of any one positioning groove 4, first dispensing grooves 7 are symmetrically distributed on the edges of two sides of the mounting groove 3; as shown in fig. 2 and 3, the first glue dispensing groove 7 is a chute; after the cylindrical mirror 8 is installed, glue is quickly positioned through the first glue dispensing groove 7, for example, photosensitive glue, and the gluing stress borne by the cylindrical mirror 8 during quick fixation is balanced due to the balanced distribution of the four glue dispensing positions, so that the precision variation is small.
After the cylindrical mirror 8 is installed, a second glue dispensing groove 9 is formed between the end face of the cylindrical mirror 8 and two sides of the positioning groove 4, after glue is dispensed through the first glue dispensing groove 7, epoxy glue or silicon rubber which is slowly cured is dispensed in the second glue dispensing groove 9, and then the cylindrical mirror 8 is effectively fixed.
The four first glue dispensing positions on the upper end surface of the mounting groove 3 and the two axial ends of the cylindrical mirror 8 can be provided with glue dispensing grooves with different configurations or not.
Claims (9)
1. A cylindrical mirror positioning structure of a laser line source comprises a mounting groove (3) formed in the front end face (2) of a laser line source shell (1), wherein the mounting groove (3) is communicated with a light through hole (6) formed in the front end face of the shell (1) along the axial direction; the method is characterized in that:
locating grooves (4) for installing cylindrical mirrors (8) are formed in the installation grooves (3) on two sides of the light through holes (6), wherein the locating grooves (4) comprise the following two types:
i, two unparallel positioning edges (5) are arranged on the upper edges of two sides of each positioning groove (4), and the positioning edges (5) are in point contact with the circumferences of two end surfaces of a cylindrical mirror (8);
II, a positioning edge (5) is arranged at the upper edge of one side of each positioning groove (4), and the positioning edges (5) are in point contact with the circumferences of two end surfaces of the cylindrical mirror (8); the other side of the positioning groove (4) and the side wall of the mounting groove (3) are overlapped to form a positioning surface (10), and the positioning surface (10) is in line contact with the cylindrical surface of the cylindrical mirror (8).
2. The cylindrical mirror positioning structure of a laser line light source as claimed in claim 1, wherein the width of the positioning groove (4) is gradually reduced along the direction away from the light through hole (6), and the end of the positioning groove (4) with the larger width is intersected with the light through hole (6).
3. The cylindrical mirror positioning structure of a laser line light source as claimed in claim 1, wherein for configuration i, the positioning edges (5) of the upper edges of both sides of the positioning groove (4) are symmetrical to each other.
4. The cylindrical mirror positioning structure of the laser line light source according to claim 1, wherein for configuration i and configuration ii, the positioning groove (4) is a circular arc groove, a trapezoidal groove or other polygonal groove, the positioning groove (4) and the bottom surface of the mounting groove (3) are intersected to form the positioning edge (5) or the positioning surface (10), and the cylindrical mirror (8) is installed in a point contact with the positioning edge (5) and in a line contact with the positioning surface (10).
5. The cylindrical mirror positioning structure of the laser line light source as claimed in claim 1, wherein the mounting groove (3) is a strip-shaped groove, the mounting groove (3) traverses the front end face (2) of the housing (1) or is located in the front end face (2), and has a pair of side walls parallel to each other.
6. The cylindrical mirror positioning structure of a laser line light source as claimed in claim 1, wherein for configuration ii, the positioning edge (5) of the positioning groove (4) is inclined to the side wall of the mounting groove (3).
7. The cylindrical mirror positioning structure of a laser line light source as claimed in claim 1, wherein for configuration i, the included angle between the two positioning edges (5) of the positioning groove (4) is 0 ° to 20 °.
8. The cylindrical mirror positioning structure of a laser line light source as claimed in claim 1, wherein for configuration ii, the angle between the positioning edge (5) on one side of the positioning groove (4) and the positioning surface (10) on the other side is 0 ° to 20 °.
9. The cylindrical mirror positioning structure of a laser line light source as claimed in claim 1, wherein first dispensing grooves (7) are symmetrically distributed on both side edges of the mounting groove (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920770047.4U CN209842193U (en) | 2019-05-24 | 2019-05-24 | Cylindrical mirror positioning structure of laser line light source |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920770047.4U CN209842193U (en) | 2019-05-24 | 2019-05-24 | Cylindrical mirror positioning structure of laser line light source |
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| CN209842193U true CN209842193U (en) | 2019-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920770047.4U Active CN209842193U (en) | 2019-05-24 | 2019-05-24 | Cylindrical mirror positioning structure of laser line light source |
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- 2019-05-24 CN CN201920770047.4U patent/CN209842193U/en active Active
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