A laser marking machine

Abstract

The utility model relates to a marking machine technical field, especially a kind of laser marking machine, including rack, up-down moving mechanism, laser marking assembly, visual identification component and conveying component, up-down moving mechanism is set on rack, and it includes the movable support platform that can go up and down;Laser marking assembly is installed on support platform, and it includes the marking head for emitting marking laser;Visual identification component includes the installation box being arranged below marking head, the lens being rotatably installed in installation box and being below marking head, the camera being arranged in installation box and lens being towards lens setting and the power unit being arranged in the side of installation box and driving lens rotation;The utility model drives lens to rotate a certain angle by power unit, so that camera identifies the identification area of different angle, and then solve the technical problem that visual marking machine in prior art is suitable for single part.

Description

Technical Field

[0001] This utility model relates to the field of marking machine technology, and in particular to a laser marking machine. Background Technology

[0002] Visual laser marking machines are high-precision automated devices that combine machine vision positioning and laser marking technology. They are widely used in industrial scenarios that require precise positioning, batch processing, or marking of complex patterns.

[0003] Chinese utility model patent application CN202020348900.6 discloses a production line visual marking machine, including a frame with a belt conveyor for loading and unloading materials, driven by a motor. One end of the belt conveyor has a receiving box for collecting products. A visual positioning and detection marking machine for positioning and marking products is also mounted on the frame, above the belt conveyor via a lifting and adjusting mechanism. A laser emitter connected to the visual positioning and detection marking machine is installed inside the frame. The visual positioning and detection marking machine includes an optical path box connected to the laser emitter, a galvanometer box at the light output port of the optical path box, a lens return box at the light output port of the galvanometer box, a CCD camera on one side of the lens return box, and an illumination source below the lens return box. This utility model improves the structure of traditional marking machines, achieving fully automatic loading and unloading positioning and marking, and improving marking accuracy and efficiency.

[0004] However, this device is only suitable for use on parts where the marking area and the recognition area are consistent, such as... Figure 8 The equipment cannot be used for parts where the angle of the marking area and the recognition area shown changes. Utility Model Content

[0005] To address the above problems, this utility model provides a laser marking machine that drives a lens to rotate at a certain angle via a power unit, enabling the camera to identify recognition areas at different angles, thereby solving the technical problem of limited applicability of visual marking machines in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A laser marking machine, comprising: frame; A vertical moving mechanism is provided on the frame and includes a vertically movable support platform. A laser marking assembly, which is mounted on the support platform and includes a marking head for emitting a marking laser; A visual recognition component, comprising a mounting box disposed below the marking head, a lens rotatably mounted within the mounting box and located below the marking head, a camera disposed within the mounting box with its lens facing the lens, and a power unit disposed on the side of the mounting box and driving the lens to rotate; and A conveying assembly is mounted on the frame and conveys the material to be marked past the lens.

[0007] As an improvement, the vertical moving mechanism further includes a vertically arranged linear module and a lead screw assembly installed in the linear module to drive the platform to move up and down.

[0008] As an improvement, the laser marking assembly also includes a mounting arm disposed on the support platform for mounting the marking head, an indicator light kit disposed on the frame, a display screen mounted on the linear module via a bracket, and a controller kit disposed inside the frame.

[0009] As an improvement, the visual recognition component further includes two sets of connecting rods symmetrically arranged and connecting the mounting box and the marking head. The connecting rods are arranged in an "L" shape and include a rod body, two sets of round holes formed on the rod body and connected to the mounting box by screws, and two sets of waist-shaped holes formed on the rod body and connected to the marking head by screws.

[0010] As an improvement, the waist-shaped hole is arranged vertically.

[0011] As an improvement, the lens includes a lens body, a high-reflection coating deposited on the lens body and facing the marking head, and a visible light high-reflection coating deposited on the lens body and facing the camera.

[0012] As an improvement, the center of the camera is positioned directly opposite the axis of the lens rotation.

[0013] As an improvement, the power unit includes a mounting base disposed on the side of the mounting box, a worm gear rotatably mounted on the mounting base, a worm wheel coaxially disposed with the lens shaft, and a motor a mounted on the mounting base and connected to the worm gear via a coupling.

[0014] As an improvement, the conveying assembly includes a belt conveyor unit and a motor b that drives the belt conveyor unit.

[0015] The beneficial effects of this utility model are as follows: (1) In this utility model, the power unit can drive the lens to rotate at a certain angle, thereby enabling the camera to capture the recognition area at a specific angle, thus improving the applicability of the device; (2) The drive unit in this utility model is a precision worm gear structure, which ensures the accuracy of the lens rotation angle. In addition, the worm gear and worm have a self-locking function. After the lens angle is adjusted, the lens will not rotate, thus ensuring the accuracy of camera recognition. (3) The height of the visual recognition component in this utility model can also be adjusted separately, which further improves the applicability of the equipment; (4) In this utility model, the belt conveyor unit transports the parts to be marked, which greatly improves the marking efficiency.

[0016] In summary, this utility model has the advantages of simple structure, high equipment applicability and high marking efficiency, and is especially suitable for the field of laser marking technology. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the overall structure of the present invention. Figure 3 ; Figure 4 for Figure 1 Enlarged view of point A in the middle; Figure 5 for Figure 2 Enlarged view at point B in the middle; Figure 6 This is a diagram showing the rotation state of the lens; Figure 7 This is a schematic diagram of the lens structure; Figure 8 This is a schematic diagram of the part to be marked.

[0018] In the diagram: 1. Frame; 2. Up-and-down moving mechanism; 21. Support platform; 22. Linear module; 23. Lead screw pair; 3. Laser marking assembly; 31. Marking head; 32. Mounting arm; 33. Indicator light kit; 34. Display screen; 35. Controller kit; 4. Vision recognition assembly; 41. Mounting box; 42. Lens; 421. Lens body; 422. High anti-reflection coating; 423. Visible light high reflectivity coating; 43. Camera; 44. Power unit; 441. Mounting base; 442. Worm gear; 443. Worm wheel; 444. Motor a; 45. Connecting rod; 451. Rod body; 452. Round hole; 453. Oval hole; 5. Conveying assembly; 51. Belt conveyor unit; 52. Motor b. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] Example: like Figures 1 to 3 As shown, a laser marking machine includes: Rack 1; The vertical moving mechanism 2 is mounted on the frame 1 and includes a vertically movable support platform 21. Laser marking assembly 3, which is mounted on the support 21, includes a marking head 31 for emitting marking laser; The visual recognition component 4 includes a mounting box 41 disposed below the marking head 31, a lens 42 rotatably mounted within the mounting box 41 and located below the marking head 31, a camera 43 disposed within the mounting box 41 with its lens facing the lens 42, and a power unit 44 disposed on the side of the mounting box 41 and driving the lens 42 to rotate; and The conveying component 5 is mounted on the frame 1 and conveys the material to be marked below the lens 42.

[0023] Furthermore, the vertical moving mechanism 2 also includes a vertically arranged linear module 22 and a lead screw pair 23 installed in the linear module 22 and driving the support platform 21 to move up and down.

[0024] It should be noted that the linear module 22 and the lead screw pair 23 are both existing technologies, and their principles and structures will not be elaborated on here. Rotating the lead screw pair 23 can drive the support platform 21 to move.

[0025] Furthermore, the laser marking assembly 3 also includes a mounting arm 32 disposed on the support 21 for mounting the marking head 31, an indicator light kit 33 disposed on the frame 1, a display screen 34 mounted on the linear module 22 via a bracket, and a controller kit 35 disposed inside the frame 1.

[0026] It should be noted that the controller kit 35, the display screen 34, and the indicator light kit 33 are all connected by electrical signals. Their working principle is existing technology and will not be described in detail here.

[0027] It should also be noted that the marking head 31 is connected to the laser generator (not shown in the figure), and its working principle is existing technology, which will not be elaborated on in this utility model.

[0028] Furthermore, such as Figure 5 As shown, the visual recognition component 4 also includes two sets of connecting rods 45 symmetrically arranged and connecting the mounting box 41 and the marking head 31. The connecting rods 45 are L-shaped and include a rod body 451, two sets of round holes 452 formed on the rod body 451 and connected to the mounting box 41 by screws, and two sets of waist-shaped holes 453 formed on the rod body 451 and connected to the marking head 31 by screws.

[0029] Furthermore, the waist-shaped hole 453 is vertically arranged.

[0030] It should be noted that the vertical arrangement of the waist-shaped hole 453 facilitates the individual adjustment of the height of the visual recognition component 4 to accommodate parts of different specifications.

[0031] As an improvement, such as Figure 7 As shown, the lens 42 includes a lens body 421, a high anti-reflection coating 422 coated on the lens body 421 and facing the marking head 31, and a visible light high reflectivity coating 423 coated on the lens body 421 and facing the camera 43.

[0032] It should be noted that the high anti-reflection film 422 allows laser light to pass through the lens body 421 better, and the visible light high reflectivity film 423 allows the camera 43 to better capture and identify the content in the recognition area.

[0033] As an improvement, the center of the camera 43 is positioned directly opposite the axis of rotation of the lens 42.

[0034] It should be noted that, in order to facilitate the calculation of the angle between the lens 42 and the camera 43, the center of the camera 43 is set to be directly opposite the axis of rotation of the lens 42, which can improve the efficiency of adjusting the lens 42.

[0035] As an improvement, such as Figure 4 and Figure 6 As shown, the power unit 44 includes a mounting base 441 disposed on the side of the mounting box 41, a worm gear 442 rotatably mounted on the mounting base 441, a worm wheel 443 coaxially disposed with the rotating shaft of the lens 42, and a motor a444 mounted on the mounting base 441 and connected to the worm gear 442 via a coupling.

[0036] It should be noted that the motor a444 is a servo motor, and the worm gear 443 and the worm 442 are precision-fitted, which ensures the accuracy of the rotation angle of the lens 42, and further ensures the accuracy and efficiency of the camera 43 in recognition.

[0037] It should also be noted that the worm gear 443 and the worm 442 have a self-locking function, which ensures that the lens 42 will not rotate due to external factors such as vibration after rotating a certain angle.

[0038] It is worth mentioning that by changing the angle of the lens 42, the camera 43 can capture recognition areas at different angles on different parts.

[0039] As an improvement, the conveying assembly 5 includes a belt conveyor unit 51 and a motor b52 that drives the belt conveyor unit 51.

[0040] It should be noted that the motor b52 is a servo motor, which drives the belt conveyor unit 51 to sequentially transport the parts to be marked to the area below the marking head 31.

[0041] Work process: Marking process: The motor b52 drives the belt conveyor unit 51 to send the part to be marked to the area directly below the marking head 31. The camera 43 takes pictures of the recognition area through the reflection of the visible light high reflective film 423. Then the marking head 31 marks the part to be marked through the lens 42. The marked part is then transported to the next process by the belt conveyor unit 51. Transformation process: The motor a444 drives the worm gear 442 to rotate, and the worm gear 442 drives the worm wheel 443 and the lens 42 to rotate, so that the recognition area can enter the recognition range of the camera 43 through the visible light high reflective film 423. Then, the above-mentioned standard-reaching process is repeated.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A laser marking machine, characterized in that, include: Rack (1); Up-down moving mechanism (2), which is mounted on the frame (1) and includes a vertically movable support platform (21). Laser marking assembly (3), which is mounted on the support (21) and includes a marking head (31) for emitting marking laser. The visual recognition component (4) includes a mounting box (41) disposed below the marking head (31), a lens (42) rotatably mounted in the mounting box (41) and located below the marking head (31), a camera (43) disposed in the mounting box (41) with its lens facing the lens (42), and a power unit (44) disposed on the side of the mounting box (41) and driving the lens (42) to rotate. The lens (42) includes a lens body (421) and a coating on the lens body (421). The high-reflection coating (422) facing the marking head (31) and the visible light high-reflection coating (423) coated on the lens body (421) and facing the camera (43) are included. The power unit (44) includes a mounting base (441) disposed on the side of the mounting box (41), a worm gear (442) rotatably mounted on the mounting base (441), a worm wheel (443) coaxially disposed with the rotating shaft of the lens (42), and a motor a (444) mounted on the mounting base (441) and connected to the worm gear (442) via a coupling. The conveying assembly (5) is mounted on the frame (1) and conveys the material to be marked below the lens (42).

2. A laser marking machine according to claim 1, characterized in that The up-and-down moving mechanism (2) also includes a vertically arranged linear module (22) and a lead screw pair (23) installed in the linear module (22) and driving the support platform (21) to move up and down.

3. A laser marking machine according to claim 2, characterised in that, The laser marking assembly (3) also includes a mounting arm (32) disposed on the support (21) for mounting the marking head (31), an indicator light kit (33) disposed on the frame (1), a display screen (34) mounted on the linear module (22) by a bracket, and a controller kit (35) disposed inside the frame (1).

4. A laser marking machine according to claim 1, characterized in that The visual recognition component (4) also includes two sets of connecting rods (45) symmetrically arranged and connecting the mounting box (41) and the marking head (31). The connecting rods (45) are arranged in an "L" shape and include a rod body (451), two sets of round holes (452) opened on the rod body (451) and connected to the mounting box (41) by screws, and two sets of waist-shaped holes (453) opened on the rod body (451) and connected to the marking head (31) by screws.

5. A laser marking machine according to claim 4, characterised in that, The waist-shaped hole (453) is set vertically.

6. A laser marking machine according to claim 1, characterized in that The center of the camera (43) is positioned directly opposite the axis of the lens (42) rotation.

7. A laser marking machine according to claim 1, characterized in that The conveying assembly (5) includes a belt conveyor unit (51) and a motor b (52) that drives the belt conveyor unit (51).

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