Visual positioning laser marking machine
By using a pseudo-coaxial vision positioning laser marking machine, which combines a CCD camera and a telecentric lens, the problem of limited field of view in large-size laser marking machines has been solved, achieving efficient and precise laser marking results.
Patent Information
- Application Number
- CN202423297888.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing laser marking machines have limited field of view for coaxial vision positioning when processing large-sized products, resulting in low efficiency and low accuracy. They require frequent mechanical movement and cannot achieve efficient and accurate marking.
The pseudo-coaxial vision positioning laser marking machine uses a combination of a CCD camera and a telecentric lens, along with a pseudo-coaxial assembly and a galvanometer, to achieve precise deflection of the laser beam and conversion of image information, avoiding mechanical movement and improving the field of view and positioning accuracy.
It achieves high-precision laser marking with a wide field of view, is easy to install, has low cost, requires no mechanical movement, has high imaging efficiency, and its positioning accuracy is related to the field of view; the wider the field of view, the higher the accuracy.
Smart Images
Figure CN223718560U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a marking machine technical field, specifically, relate to a visual positioning laser marking machine. BACKGROUND
[0002] Laser marking is widely used in the industry vision detection industry, and is mainly used for marking and removing defective products, in the process of marking the product, in order to improve the precision of marking position, visual positioning technology is introduced, and the coaxial visual positioning is commonly used at present.
[0003] In the coaxial visual positioning of the prior art laser marking, the implementation mode is to install a beam combiner and a reflector in front of a galvanometer, and then the image of the product to be marked is obtained through an industrial CCD and a lens, but the field of view of the coaxial vision is limited due to the size limitation of the galvanometer lens, so when the product has a large size, the coaxial vision cannot obtain the image of the entire product at one time, and the position needs to be moved mechanically, which reduces the efficiency, and the mechanical movement also generates position error, and the precision of the current laser marking machine is low, the platform or XZ axis needs to be moved frequently, the efficiency is low, and a visual positioning laser marking machine is needed to solve the problem. UTILITARIAN CONTENT
[0004] The utility model aims at providing a visual positioning laser marking machine to solve the problems in the background art.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: a visual positioning laser marking machine, comprising a base, the base is located at the bottom end of the whole device, a support frame is fixedly installed on the upper end of the base, a laser head is installed in the support frame, a CCD camera is arranged on one side of the laser head, a telecentric lens is installed at the bottom end of the CCD camera, a pseudo coaxial assembly is installed at the bottom end of the telecentric lens, a field mirror is arranged on one side of the pseudo coaxial assembly, and a galvanometer is arranged on one side of the field mirror.
[0006] As a preferred technical scheme of the utility model, a light inlet refractor is arranged on one side of the laser head, and a laser light inlet is arranged at the bottom end of the light inlet refractor.
[0007] As a preferred technical scheme of the utility model, a protective cover is installed on the support frame, and the laser head is in the protective cover.
[0008] As a preferred technical scheme of the utility model, a light source is installed at the bottom end of the telecentric lens, and a measured object is arranged at the bottom end of the light source.
[0009] As a preferred technical scheme of the utility model, a dust extraction pipe is installed at the bottom end of the base, and the dust extraction pipe is made of aluminum alloy.
[0010] As the preferred technical scheme of the utility model, the support frame is made of aluminum alloy material, and the galvanometer is fixedly installed on one side of the support frame.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] (1) the utility model discloses a visual positioning laser marking machine, the laser marking machine of the device is outputted after laser head, laser and CCD camera are coupled output equipment through reflected laser and visible light reflection lens, after the photographing of CCD camera, image information is converted into coordinate information through professional software algorithm, and is sent to laser scanning head, thereby realizing the action of visual positioning and marking, and compared with true coaxial, pseudo coaxial has the advantages of convenient installation, wide field of view, low cost, and the stability of pseudo coaxial assembly is higher, can stably work in various industrial environments, the whole device has the characteristics of convenient installation, high stability, no need for mechanical movement, high photographing efficiency, wherein the positioning accuracy is related to the field of view, and the smaller the field of view, the higher the accuracy. BRIEF DESCRIPTION OF DRAWINGS
[0013] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creating labor.
[0014] Fig. 1 It is a structure schematic view of a visual positioning laser marking machine according to the utility model embodiment.
[0015] Fig. 2 It is a side view of a visual positioning laser marking machine according to the utility model embodiment.
[0016] Fig. 3 It is a working principle diagram of a visual positioning laser marking machine according to the utility model embodiment.
[0017] Reference signs:
[0018] 1, base; 2, support frame; 3, protective cover; 4, laser head; 5, light refraction; 6, laser light inlet; 7, CCD camera; 8, telecentric lens; 9, light source; 10, galvanometer; 11, field lens; 12, dust extraction pipe; 13, pseudo coaxial assembly; 14, measured object. DETAILED DESCRIPTION
[0019] Next, the utility model is further described in combination with the drawings and specific embodiments:
[0020] Embodiment 1
[0021] Reference Figs. 1 to 3 The embodiment 1 is described, including the base 1 at the bottom end of the whole device, the support frame 2 is fixedly installed on the upper end of the base 1, the laser head 4 is installed inside the support frame 2, the CCD camera 7 is arranged on one side of the laser head 4, the telecentric lens 8 is installed at the bottom end of the CCD camera 7, the pseudo-coaxial assembly 13 is installed at the bottom end of the telecentric lens 8, and the field lens 11 is arranged on one side of the pseudo-coaxial assembly 13, the galvanometer 10 is arranged on one side of the field lens 11, and the dust extraction pipe 12 is installed at the bottom end of the base 1, and the dust extraction pipe 12 is made of aluminum alloy;
[0022] In the embodiment, the field lens 11 is arranged to adjust the field size of the objective lens, so that the laser energy can be concentrated on a very small spot, thereby improving the precision and clarity of marking.
[0023] Embodiment 2
[0024] Reference Fig. 1 The embodiment 2 is described, and the support frame 2 is made of aluminum alloy, and the galvanometer 10 is fixedly installed on one side of the support frame 2, the light refraction 5 is arranged on one side of the laser head 4, the laser light inlet 6 is arranged at the bottom end of the light refraction 5, the protective cover 3 is installed on the support frame 2, the laser head 4 is in the protective cover 3, the light source 9 is installed at the bottom end of the telecentric lens 8, and the measured object 14 is arranged at the bottom end of the light source 9;
[0025] In the embodiment, the galvanometer 10 is arranged to reflect the laser beam, and the angle of the galvanometer 10 is controlled by the computer to realize the accurate deflection of the laser beam in the XY plane, and the high-precision control of the galvanometer 10 enables the laser beam to move accurately according to the preset pattern or text.
[0026] In specific application, in the pseudo-coaxial visual positioning laser marking machine, the galvanometer 10 is mainly used for reflecting the laser beam, and the angle of the galvanometer 10 is controlled by the computer to realize the accurate deflection of the laser beam in the XY plane, and the high-precision control of the galvanometer 10 enables the laser beam to move accurately according to the preset pattern or text, thereby realizing high-quality marking effect, the field lens 11 is used to adjust the field size of the objective lens, so that the laser energy can be concentrated on a very small spot, thereby improving the precision and clarity of marking, the field lens 11 can ensure that the laser beam forms clear and accurate marks on the material surface, and after the laser is output by the laser head 4, the laser and the CCD camera 7 are coupled and output through the reflecting mirror of the reflecting laser and visible light, the image information is converted into coordinate information through professional software algorithm after the CCD camera 7 takes a picture, and the coordinate information is sent to the laser scanning head, thereby realizing the action of visual positioning and marking, and compared with the true coaxial, the pseudo-coaxial has the advantages of convenient installation, large field of view, low cost and the like.
[0027] In the description of the utility model, it is necessary to explain that the terms "top", "bottom", "one side", "the other side", "front", "back", "intermediate position", "interior", "top end", "bottom end" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; in addition, unless explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0028] Finally, it should be pointed out that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A vision positioning laser marking machine, characterized in that, Including base (1), the base (1) is located at the bottom end of the whole device, the upper end of the base (1) is fixedly installed with support frame (2), the inner side of the support frame (2) is installed with laser head (4), one side of the laser head (4) is equipped with CCD camera (7), the bottom end of the CCD camera (7) is installed with telecentric lens (8), the bottom end of the telecentric lens (8) is installed with pseudo coaxial assembly (13), and one side of the pseudo coaxial assembly (13) is equipped with field lens (11), one side of the field lens (11) is equipped with galvanometer (10).
2. A vision positioning laser marking machine according to claim 1, characterized in that, One side of the laser head (4) is equipped with light refraction (5), and the bottom end of the light refraction (5) is equipped with laser light inlet (6).
3. A vision positioning laser marking machine according to claim 1, characterized in that, The support frame (2) is installed with protective cover (3), and the laser head (4) is in the protective cover (3).
4. The vision positioning laser marking machine according to claim 1, wherein, The bottom end of the telecentric lens (8) is installed with light source (9), and the bottom end of the light source (9) is equipped with measured object (14).
5. The vision positioning laser marking machine according to claim 1, wherein, The bottom end of the base (1) is installed with dust extraction pipe (12), and the dust extraction pipe (12) is made of aluminum alloy.
6. A vision positioning laser marking machine according to claim 1, characterized in that, The support frame (2) is made of aluminum alloy, and the galvanometer (10) is fixedly installed on one side of the support frame (2).