Coaxial visual inspection laser cutting equipment

Abstract

The utility model discloses coaxial visual inspection laser cutting equipment, and relates to the technical field of laser cutting equipment. According to the coaxial visual inspection laser cutting equipment, the gas inlet pipe is arranged and connected to the bottom of the laser transmission pipeline, the bottom of the gas inlet pipe is connected with the high-pressure nozzle, the gas inlet pipe can convey gas to a cutting area, and the high-pressure nozzle can spray gas in a high-pressure mode and is used for blowing away slag and smoke dust generated in the cutting process, so that the cleanliness of the cutting area is guaranteed; the cutting quality is improved, and meanwhile visual inspection is facilitated; the objective lens is arranged below the laser transmission pipeline in a sleeving manner, and the bottom of the objective lens is connected with the protective glass in a magnetic attraction manner, so that mounting and dismounting are facilitated, and the objective lens can be effectively protected from being damaged by splashes and dust generated in the cutting process; the turntable is arranged, and light beads with different light sources are arranged in the turntable, so that adjustment can be performed according to workpieces with different materials and colors, and the detection effect is ensured.

Description

Technical Field

[0001] This utility model relates to the field of laser cutting equipment technology, specifically a coaxial vision inspection laser cutting equipment. Background Technology

[0002] The coaxial vision inspection laser cutting equipment generates a laser beam through a laser generation system, which is then focused onto the workpiece surface via an optical path transmission system, causing the material to melt or vaporize rapidly. The coaxial vision inspection system monitors the laser cutting position, cutting quality, and other information in real time.

[0003] Existing laser cutting equipment often produces spatter that adheres to the surface of semi-transparent mirrors or lenses, obstructing light transmission and leading to blurred images and increased detection errors. While fixed light sources are typically used for supplemental lighting, they are ill-suited to the reflective properties of workpieces of different materials and colors, resulting in low image contrast and difficulties in feature extraction. Therefore, there is an urgent need for a laser cutting device that effectively combines laser cutting with visual inspection functions, providing both good illumination and precise detection.

[0004] When existing equipment performs laser cutting, spatter easily adheres to the lens surface, causing image blurring and increasing detection errors. Fixed light sources are difficult to adapt to the reflective characteristics of workpieces of different materials and colors, resulting in low image contrast and difficulty in feature extraction, which is not conducive to detection. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a coaxial vision inspection laser cutting device, which solves the problems of existing devices easily generating spatter that adheres to the lens surface during laser cutting, resulting in blurred images and increased detection errors; and fixed light sources that are difficult to adapt to the reflective characteristics of workpieces of different materials and colors, leading to low image contrast, difficulty in feature extraction, and unfavorable inspection.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coaxial vision inspection laser cutting device, comprising a laser cutting unit and a vision inspection unit, wherein the vision inspection unit is connected to the laser cutting unit, and the laser cutting unit comprises:

[0007] Laser transmission pipeline;

[0008] An air inlet pipe is connected to the bottom of the laser transmission pipeline, and a high-pressure nozzle is connected to the bottom of the air inlet pipe;

[0009] An objective lens is fitted under the laser transmission tube, and a protective glass is magnetically connected to the bottom of the objective lens;

[0010] The visual detection unit is equipped with a turntable, and light beads evenly distributed in a ring are inserted into the inner side of the turntable to provide supplementary lighting for image acquisition.

[0011] Preferably, the top of the laser transmission pipeline is fitted with an optical fiber interface, and a fixing bracket is provided on the inner side of the laser transmission pipeline.

[0012] Preferably, the fixing brackets are configured in pairs, with a reflector attached to the inner side of one pair of fixing brackets and a first semi-transparent semi-reflective mirror attached to the inner side of the other pair.

[0013] Preferably, the visual detection unit is provided with a connecting pipe, an image acquisition port is connected to the outside of the connecting pipe, a connecting sleeve is sleeved on the outside of the connecting pipe, a plug is inserted into the inside of the connecting sleeve, and the plug is inserted into the turntable.

[0014] Preferably, a snap-fit ​​component is provided inside the connecting pipe, and a second semi-transparent and semi-reflective mirror is snapped into the inside of the snap-fit ​​component, with the second semi-transparent and semi-reflective mirror located directly above the first semi-transparent and semi-reflective mirror.

[0015] This utility model discloses a coaxial vision inspection laser cutting device, which has the following beneficial effects:

[0016] An air inlet pipe is connected to the bottom of the laser transmission pipeline. A high-pressure nozzle is connected to the bottom of the air inlet pipe. The air inlet pipe can deliver gas to the cutting area. The high-pressure nozzle can spray gas in a high-pressure form to blow away the slag and dust generated during the cutting process, ensuring the cleanliness of the cutting area, improving the cutting quality, and facilitating visual inspection.

[0017] An objective lens is fitted below the laser transmission line, and a protective glass is magnetically attached to the bottom of the objective lens for easy installation and removal, effectively protecting the objective lens from damage caused by splatter and dust generated during the cutting process;

[0018] Equipped with a turntable, the light beads of different light sources inside the turntable can be adjusted according to the workpieces of different materials and colors to ensure the detection effect. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a structural view of the laser cutting unit of this utility model;

[0022] Figure 3 This is a cross-sectional structural diagram of the laser cutting unit of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the visual inspection unit of this utility model;

[0024] Figure 5 This is a cross-sectional structural diagram of the visual inspection unit of this utility model.

[0025] In the diagram: 1. Laser cutting unit; 11. Laser transmission pipeline; 111. Fiber optic interface; 112. Fixing bracket; 113. Reflector; 114. First semi-transparent semi-reflective mirror; 12. Air inlet pipe; 121. High-pressure nozzle; 13. Objective lens; 131. Protective glass; 2. Visual inspection unit; 21. Connecting pipeline; 211. Image acquisition port; 212. Connecting sleeve; 213. Insert rod; 214. Snap-fit ​​component; 215. Second semi-transparent semi-reflective mirror; 22. Turntable; 221. Light bead. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] This application provides a coaxial vision inspection laser cutting device, which solves the problems of existing equipment, such as the easy formation of splatter adhering to the lens surface during laser cutting, resulting in blurred images and increased detection errors; and the difficulty of using a fixed light source to adapt to the reflective characteristics of workpieces of different materials and colors, resulting in low image contrast, difficulty in feature extraction, and unfavorable detection, thereby improving the clarity of image acquisition.

[0028] This utility model discloses a coaxial vision inspection laser cutting device.

[0029] Example 1: According to the appendix Figure 1-5As shown, the system includes a laser cutting unit 1 and a vision inspection unit 2. The vision inspection unit 2 is connected to the laser cutting unit 1. The laser cutting unit 1 includes a laser transmission pipe 11, an air inlet pipe 12, and an objective lens 13. The air inlet pipe 12 is connected to the bottom of the laser transmission pipe 11, and a high-pressure nozzle 121 is connected to the bottom of the air inlet pipe 12. The objective lens 13 is fitted under the laser transmission pipe 11, and a protective glass 131 is magnetically connected to the bottom of the objective lens 13. The vision inspection unit 2 is equipped with a turntable 22. Light beads 221 are inserted into the inner side of the turntable 22 in a ring-shaped uniform distribution to provide supplementary lighting for image acquisition. The light beads 221 can provide supplementary lighting for image acquisition under the drive of the turntable 22, ensuring sufficient light in the cutting area, improving the clarity of image acquisition, and thus improving the accuracy of vision inspection.

[0030] An air inlet pipe 12 is connected to the bottom of the laser transmission pipeline 11. A high-pressure nozzle 121 is connected to the bottom of the air inlet pipe 12. The air inlet pipe 12 can deliver gas to the cutting area, and the high-pressure nozzle 121 can spray gas in a high-pressure form to blow away the slag and dust generated during the cutting process, ensuring the cleanliness of the cutting area, improving the cutting quality, and facilitating visual inspection. An objective lens sleeve 13 is provided below the laser transmission pipeline 11. The bottom of the objective lens 13 is magnetically connected to a protective glass 131, which is convenient for installation and removal and can effectively protect the objective lens 13 from damage caused by splatter and dust generated during the cutting process. A turntable 22 is provided. By using the light beads 221 of different light sources set in the turntable 22, the light can be adjusted according to the workpiece of different materials and colors to ensure the inspection effect.

[0031] Furthermore, an optical fiber interface 111 is sleeved on the top of the laser transmission pipeline 11, and a fixing bracket 112 is provided inside the laser transmission pipeline 11. The optical fiber interface 111 is used to connect to an external optical fiber to realize the introduction of laser. The fixing bracket 112 is used to fix the reflector 113 and the first semi-transparent semi-reflector 114 to ensure their stable position inside the laser transmission pipeline 11.

[0032] Furthermore, the fixed brackets 112 are configured in pairs. One pair of fixed brackets 112 has a reflector 113 attached to its inner side, and the other pair has a first semi-transparent semi-reflective mirror 114 attached to its inner side. The reflector 113 is used to change the transmission direction of the laser, and the first semi-transparent semi-reflective mirror 114 can allow part of the laser to pass through and part of the laser to be reflected, thereby realizing a reasonable layout of the laser transmission and visual detection optical path.

[0033] Specifically disclosed, the visual inspection unit 2 is provided with a connecting pipe 21, an image acquisition port 211 is connected to the outside of the connecting pipe 21, a connecting sleeve 212 is sleeved on the outside of the connecting pipe 21, and a plug rod 213 is inserted into the inside of the connecting sleeve 212. The plug rod 213 is inserted into the turntable 22.

[0034] Example 2: According to the appendix Figure 1-5As shown, the system includes a laser cutting unit 1 and a vision inspection unit 2. The vision inspection unit 2 is connected to the laser cutting unit 1. The laser cutting unit 1 includes a laser transmission pipeline 11, an air inlet pipe 12, and an objective lens 13. The air inlet pipe 12 is connected to the bottom of the laser transmission pipeline 11, and a high-pressure nozzle 121 is connected to the bottom of the air inlet pipe 12. The objective lens 13 is fitted under the laser transmission pipeline 11, and a protective glass 131 is magnetically connected to the bottom of the objective lens 13. The vision inspection unit 2 is provided with a turntable 22, and light beads 221 that are evenly distributed in a ring are inserted into the inner side of the turntable 22 to provide supplementary lighting for image acquisition.

[0035] It is particularly important to emphasize that a snap-fit ​​component 214 is provided inside the connecting pipe 21, and a second semi-transparent and semi-reflective mirror 215 is snapped into the inside of the snap-fit ​​component 214. The second semi-transparent and semi-reflective mirror 215 is located directly above the first semi-transparent and semi-reflective mirror 114. The second semi-transparent and semi-reflective mirror 215 cooperates with the first semi-transparent and semi-reflective mirror 114 to further optimize the optical path of visual inspection, so that the visual inspection unit 2 can accurately acquire the image information of the cutting area.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coaxial vision inspection laser cutting device, comprising a laser cutting unit (1) and a vision inspection unit (2), wherein the vision inspection unit (2) is connected to the laser cutting unit (1), characterized in that, The laser cutting unit (1) includes: Laser transmission pipeline (11); An air inlet pipe (12) is connected to the bottom of a laser transmission pipeline (11), and a high-pressure nozzle (121) is connected to the bottom of the air inlet pipe (12). Objective lens (13), which is sleeved under the laser transmission pipeline (11), and the bottom of the objective lens (13) is magnetically connected to a protective glass (131); The visual detection unit (2) is equipped with a turntable (22), and light beads (221) in a ring-shaped uniform distribution are inserted into the inner side of the turntable (22) to provide supplementary lighting for image acquisition.

2. The coaxial vision inspection laser cutting equipment according to claim 1, characterized in that, The top of the laser transmission pipeline (11) is fitted with an optical fiber interface (111), and a fixing bracket (112) is provided inside the laser transmission pipeline (11).

3. The coaxial vision inspection laser cutting equipment according to claim 2, characterized in that, The fixing brackets (112) are configured in pairs, with a reflector (113) attached to the inner side of one pair of fixing brackets (112) and a first semi-transparent semi-reflective mirror (114) attached to the inner side of the other pair.

4. The coaxial vision inspection laser cutting equipment according to claim 1, characterized in that, The visual detection unit (2) is provided with a connecting pipe (21), an image acquisition port (211) is connected to the outside of the connecting pipe (21), a connecting sleeve (212) is sleeved on the outside of the connecting pipe (21), and a plug rod (213) is inserted into the inside of the connecting sleeve (212). The plug rod (213) is inserted into the turntable (22).

5. The coaxial vision inspection laser cutting equipment according to claim 4, characterized in that, The connecting pipe (21) is provided with a snap-fit ​​component (214) inside, and a second semi-transparent semi-reflective mirror (215) is snapped into the inside of the snap-fit ​​component (214). The second semi-transparent semi-reflective mirror (215) is located directly above the first semi-transparent semi-reflective mirror (114).

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