CN215576102U - Laser imaging equipment - Google Patents
Laser imaging equipment Download PDFInfo
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- CN215576102U CN215576102U CN202121998858.3U CN202121998858U CN215576102U CN 215576102 U CN215576102 U CN 215576102U CN 202121998858 U CN202121998858 U CN 202121998858U CN 215576102 U CN215576102 U CN 215576102U
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Abstract
The embodiment of the utility model provides laser imaging equipment, which is used for solving the problem that the actual position and the measured position of a laser have deviation. The apparatus may include a scanning platform, an optical assembly, a transverse moving platform, a longitudinal moving platform, and a controller; the scanning platform is provided with a transverse guide rail and at least two groups of linear position encoders parallel to the transverse guide rail; the transverse moving platform is arranged on the transverse guide rail and can move along the transverse guide rail, and a longitudinal guide rail and a data reading device of a linear position encoder are arranged on the transverse moving platform; the longitudinal moving platform is arranged on the longitudinal guide rail and can move along the longitudinal guide rail; the optical assembly comprises a plurality of lasers distributed on a longitudinal moving platform along a straight line; the controller is electrically connected with the data reading device and the optical assembly, and is used for calculating the real-time position of each laser according to the output signal of the data reading device and generating a control signal for controlling the on-off of the lasers according to the real-time position of each laser.
Description
Technical Field
The utility model relates to the technical field of laser imaging, in particular to laser imaging equipment.
Background
The principle of laser imaging is as follows: and controlling the laser to irradiate the photosensitive coating on the exposure surface to perform image exposure, and generating a preset image after developing. Compared with the traditional process, the laser imaging technology reduces the process complexity, saves the production cost, and is widely applied to the fields of screen printing plate making, PCB pattern transfer and the like.
In the laser imaging process, lasers in a row of straight lines need to be controlled to scan line by line in the transverse direction, and when scanning reaches the position of each row of preset exposure pixel points, the lasers are controlled to irradiate photosensitive coatings on exposure surfaces to be exposed. In the related art, the position coordinates of a single laser are often measured, and then the lateral coordinates of the single laser are taken as all the laser lateral coordinates.
Due to mechanical motion errors and mechanical vibration, included angles often exist between straight lines where lasers are located in a row and the direction of a transverse coordinate, so that deviation exists between the actual position of the lasers and the measured position, and laser imaging precision loss is caused.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides laser imaging equipment, which is used for solving the problem that the actual position and the measured position of a laser have deviation.
A first aspect of an embodiment of the present invention provides a laser imaging apparatus, which may include:
the device comprises a scanning platform, an optical assembly, a transverse moving platform, a longitudinal moving platform and a controller;
the scanning platform is provided with a transverse guide rail and at least two groups of linear position encoders parallel to the transverse guide rail;
the transverse moving platform is arranged on the transverse guide rail and can move along the transverse guide rail, and a longitudinal guide rail and a data reading device of the linear position encoder are arranged on the transverse moving platform;
the longitudinal moving platform is arranged on the longitudinal guide rail and can drive the optical assembly to move along the longitudinal guide rail;
the optical assembly comprises a plurality of lasers distributed on the longitudinal moving platform along a straight line;
the controller is electrically connected with the data reading device and the optical assembly, and is used for calculating the real-time position of each laser according to the output signal of the data reading device and generating a control signal for controlling the on-off of each laser according to the real-time position of each laser.
Optionally, as a possible implementation manner, in the laser imaging apparatus in the embodiment of the present invention, the linear position encoder is a magnetic scale or a grating scale.
Optionally, as a possible implementation manner, in the laser imaging apparatus in the embodiment of the present invention, at least two sets of transverse rails are disposed on the scanning platform.
Optionally, as a possible implementation manner, in the laser imaging apparatus in the embodiment of the present invention, at least two sets of longitudinal rails are disposed on the transverse moving platform.
Optionally, as a possible implementation manner, the laser imaging apparatus in the embodiment of the present invention may further include a horizontal synchronous belt and synchronous belt wheels, where the synchronous belt wheels are respectively installed on two sides of the scanning platform, and the synchronous belt is used to drive the horizontal moving platform to move on the horizontal guide rail.
Optionally, as a possible implementation manner, the laser imaging apparatus in the embodiment of the present invention may further include a stepping motor for driving the synchronous pulley.
Optionally, as a possible implementation manner, the laser imaging apparatus in the embodiment of the present invention may further include a frame, and the scanning platform is fixedly mounted on the frame.
According to the technical scheme, the embodiment of the utility model has the following advantages:
in the embodiment of the utility model, the laser imaging equipment is provided with at least two groups of linear position encoders parallel to the transverse guide rail, the real-time position of each laser can be accurately calculated in real time, compared with the related technology, the deviation between the actual position and the measured position caused by a single calibration point can be avoided, the real-time positioning precision of the lasers is improved, the on-off state of the lasers can be determined in real time based on the comparison between the real-time position of each laser and the preset laser exposure point position, and the laser imaging precision is improved.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a laser imaging apparatus provided in an embodiment of the present invention;
fig. 2 is a schematic diagram of another embodiment of a laser imaging apparatus provided in an embodiment of the present invention;
fig. 3 is a schematic diagram of another embodiment of a laser imaging apparatus according to an embodiment of the present invention.
In the present invention, the names and serial numbers corresponding to each zero/part/component are respectively: scanning platform 10, linear position encoder 102 of transverse guide rail 101, optical assembly 20, transverse moving platform 30, longitudinal guide rail 301, data reading device 302, longitudinal moving platform 40, controller 50, synchronous belt 60, synchronous pulley 70 and frame 80.
Detailed Description
The embodiment of the utility model provides laser imaging equipment, which is used for solving the problem that the actual position and the measured position of a laser have deviation.
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description and claims of the present invention and in the above-described drawings, the terms "center", "lateral", "up", "down", "left", "right", "vertical", "lateral", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
For ease of understanding, the following describes a detailed process in an embodiment of the present invention, and referring to fig. 1, an embodiment of a laser imaging apparatus in an embodiment of the present invention may include a scanning stage 10, an optical assembly 20, a traverse stage 30, a longitudinal stage 40, and a controller 50 (not shown).
The scanning platform 10 is provided with a cross guide 101 and at least two sets of linear position encoders 102 parallel to the cross guide 101. Optionally, the linear position encoder in the embodiment of the present invention may be a linear grating ruler or a magnetic grating sensor. Specifically, the linear grating ruler can be composed of a ruler grating and a grating reading head; the magnetic grid sensor may be comprised of a magnetic grid ruler and a magnetic head. Preferably, the two sets of linear position encoders are arranged parallel to the transverse moving direction of the laser, that is, the scale gratings of the two sets of grating scales are arranged parallel to the transverse moving direction of the laser, or the magnetic grating scales are arranged parallel to the transverse moving direction of the laser.
The traverse platform 30 is disposed on the traverse rail 101 and can move along the traverse rail 101, and a longitudinal rail 301 and a data reading device 302 (a grating reading head or a magnetic head) of the linear position encoder 102 are disposed on the traverse platform 30. Illustratively, when the linear position encoder is a magnetic scale, the corresponding data reading device is a magnetic scale reading head.
The longitudinal moving platform 40 is arranged on the longitudinal guide rail 301 and can move along the longitudinal guide rail 301;
the optical assembly 20 comprises a plurality of lasers 201 distributed along a straight line on the longitudinal moving platform 40;
the controller 50 is electrically connected to the data reading device 302 and the optical assembly 20, and the controller 50 is configured to calculate position information of at least two calibration points according to an output signal of the data reading device 302, where the specific calculation method is related to the related art. For example, the slope of the target straight line and the distance between each laser and any calibration point may be calculated according to the position coordinates of two calibration points, and the actual position of each laser may be calculated by using geometric theorem. For example, the coordinate of point A is (x)0，y0) When a certain laser 400 is located at the upper right of the point a and the distance d is determined, the included angle between the target line and the horizontal direction can be determined to be an acute angle θ based on the slope, and the abscissa of the laser 400 is (x)0+ d cos θ) with ordinate (y)0+ d sin θ). It is understood that the above coordinate calculation formula is only exemplary, and when the angle between the target straight line and the horizontal direction is an obtuse angle, the coordinate calculation formula may be adjusted by referring to the geometric theory, and details are not repeated herein. Finally, the controller 50 generates control signals that control the switching of the lasers based on the real-time position of each laser.
It should be noted that, the transverse direction and the longitudinal direction in the present invention refer to directions parallel to the transverse guide rail and the longitudinal guide rail, respectively, and the installation positions of the transverse guide rail and the longitudinal guide rail can be reasonably set according to requirements in practical application, which is not limited in the present invention. Preferably, the straight line of the transverse guide rail and the straight line of the longitudinal guide rail can be vertical after being translated to the same plane.
For ease of understanding, the operating principle of the laser imaging apparatus provided in the embodiment of the present invention is explained below: the original image to be laser-imaged may be subjected to rasterization processing, and then a trimmed image may be acquired, and the controller 50 may determine in advance, based on the trimmed image, a position of an exposure point to be exposed by the laser; after the controller 50 acquires the output signal of the data reading device 302, the position information of at least two points on the straight line where the laser 201 is located on the optical assembly 20 can be directly or indirectly calculated, and then the real-time position of each laser 201 can be determined according to a straight line function in the related art; finally, the switching state of each laser 201 is determined according to its real-time position, and a control signal for controlling the switching of the laser is generated.
Compared with the related art, the laser imaging equipment in the embodiment of the utility model is provided with at least two groups of linear position encoders parallel to the transverse guide rail, so that the real-time position of each laser can be accurately calculated in real time, and compared with the related art, the real-time positioning precision of the lasers is improved, and the laser imaging precision is further improved.
Optionally, as a possible embodiment, in order to ensure the smoothness of the movement of the optical assembly 20 in the transverse direction, at least two sets of transverse rails 101 may be disposed on the scanning platform 10, for example, two sets of parallel transverse rails 101 may be disposed, and this is not limited herein.
Optionally, as a possible implementation manner, in order to ensure the smoothness of the movement of the optical assembly in the longitudinal direction, at least two sets of longitudinal guide rails 301 are disposed on the traverse platform 30. For example, 4 longitudinal rails 301 may be provided, and are not limited herein.
Optionally, as shown in fig. 2, as a possible implementation manner, in order to improve the stability of the scanning motion of the optical assembly, the laser imaging apparatus in the embodiment of the present invention may further include a transverse timing belt 60 and a timing pulley 70, where the timing pulley 70 is respectively installed at two sides of the scanning platform 10, and the timing belt 60 is matched with the timing pulley 70 to drive the transverse moving platform 30 to move on the transverse guide 101.
Optionally, as a possible implementation manner, the laser imaging apparatus in the embodiment of the present invention may further include a stepping motor for driving the synchronous pulley.
Optionally, as shown in fig. 3, as a possible implementation manner, in order to provide a working space for a workpiece on which an exposure surface on which a photosensitive coating is located, and improve the practicability of the apparatus, the laser imaging apparatus in the embodiment of the present invention may further include a frame 80, and the scanning platform 10 is fixedly mounted on the frame 80. Preferably, the frame structure 80 forms a hollow rectangular parallelepiped space inside, and the specific size can be reasonably set according to the requirement, which is not limited herein.
While the present invention has been described in detail with reference to the foregoing examples, all of the conventional features of the embodiments described herein may not be shown or described for the convenience of understanding. Those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The laser imaging equipment is characterized by comprising a scanning platform, an optical assembly, a transverse moving platform, a longitudinal moving platform and a controller;
the scanning platform is provided with a transverse guide rail and at least two groups of linear position encoders parallel to the transverse guide rail;
the transverse moving platform is arranged on the transverse guide rail and can move along the transverse guide rail, and a longitudinal guide rail and a data reading device of the linear position encoder are arranged on the transverse moving platform;
the longitudinal moving platform is arranged on the longitudinal guide rail and can drive the optical assembly to move along the longitudinal guide rail;
the optical assembly comprises a plurality of lasers distributed on the longitudinal moving platform along a straight line;
the controller is electrically connected with the data reading device and the optical assembly, and is used for calculating the real-time position of each laser according to the output signal of the data reading device and generating a control signal for controlling the on-off of each laser according to the real-time position of each laser.
2. The laser imaging apparatus of claim 1, wherein the linear position encoder is a linear grating ruler or a magnetic grating sensor.
3. The laser imaging apparatus of claim 2, wherein at least two sets of transverse rails are disposed on the scanning platform.
4. The laser imaging apparatus of claim 2, wherein at least two sets of longitudinal rails are disposed on the traversing platform.
5. The laser imaging device as claimed in claim 2, further comprising a horizontal synchronous belt and synchronous pulleys, wherein the synchronous pulleys are respectively installed at two sides of the scanning platform, and the synchronous belt is used for driving the horizontal moving platform to move on the horizontal guide rail.
6. The laser imaging apparatus of claim 5, further comprising a stepper motor for driving the timing pulley.
7. The laser imaging apparatus of any of claims 1 to 6, further comprising a gantry, the scanning platform being fixedly mounted on the gantry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121998858.3U CN215576102U (en) | 2021-08-24 | 2021-08-24 | Laser imaging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121998858.3U CN215576102U (en) | 2021-08-24 | 2021-08-24 | Laser imaging equipment |
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| Publication Number | Publication Date |
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| CN215576102U true CN215576102U (en) | 2022-01-18 |
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| CN202121998858.3U Active CN215576102U (en) | 2021-08-24 | 2021-08-24 | Laser imaging equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687580A (en) * | 2021-08-24 | 2021-11-23 | 深圳市先地图像科技有限公司 | Laser imaging equipment |
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2021
- 2021-08-24 CN CN202121998858.3U patent/CN215576102U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113687580A (en) * | 2021-08-24 | 2021-11-23 | 深圳市先地图像科技有限公司 | Laser imaging equipment |
| CN113687580B (en) * | 2021-08-24 | 2024-04-23 | 深圳市先地图像科技有限公司 | Laser imaging equipment |
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