A laser power detection device and a laser module for a photopolymer 3D printer

Abstract

This utility model relates to the field of 3D printing technology, and particularly to a laser power detection device and a laser module for a photopolymer 3D printer. The laser power detection device includes a mounting base, an electrical integration box, a drive assembly, and a detection assembly. The mounting base has an L-shaped structure with several oblong holes. The electrical integration box is fixedly connected to a vertical plate. The drive assembly is a pen-shaped cylinder used to control the horizontal displacement of the detection assembly. The detection assembly includes a housing, a lens, and a detector, with the lens and detector coaxially assembled in a detection hole on the housing. Furthermore, the laser power detection device also includes a counterweight and a rotating assembly for rotating the detection assembly around an axis. This laser power detection device overcomes the limitations of fixed installation in existing laser power detection devices, enabling flexible detection and real-time online monitoring of laser power. When applied to laser modules for photopolymer 3D printers, it improves the performance and reliability of photopolymer 3D printing technology.

Description

Technical Field

[0001] This utility model relates to the field of 3D printing technology, and in particular to a laser power detection device and a laser module for a photopolymerization 3D printer. Background Technology

[0002] In photopolymer 3D printing technology, the stability of laser power plays a crucial role in print quality. Most existing laser power measurement devices are fixedly installed, which presents several limitations. For example, traditional laser power measurement methods typically involve directing the laser beam onto a fixed laser power meter or laser energy meter, but this requires stopping processing before measurement, severely impacting the continuity of the process. Furthermore, a fixed measurement device in the optical path may interfere with the optical path when not in use, affecting the normal transmission and focusing of the laser, thus reducing print quality. In addition, fixed laser power measurement devices are susceptible to damage from prolonged exposure to the laser.

[0003] While various laser power detection devices exist on the market, most cannot flexibly adjust their position according to actual needs, thus failing to achieve real-time online detection. Current technology lacks a laser power detector capable of flexibly controlling the extension and retraction of the drive mechanism to meet the high precision and flexibility requirements of photopolymer 3D printing technology for laser power detection. Therefore, developing a laser power detector capable of controlling the extension and retraction of the drive mechanism as needed is of great significance for improving the performance and reliability of photopolymer 3D printing technology. Utility Model Content

[0004] To address the technical problem of developing a laser power detector capable of controlling the extension and retraction of the drive as needed, this invention provides a laser power detection device, comprising a mounting base, an electrical integration box, a drive assembly, and a detection assembly;

[0005] The mounting base has an L-shaped structure, including a vertical plate and a horizontal plate that are perpendicular to each other;

[0006] The mounting base is provided with several waist holes;

[0007] The electrical integrated box is fixedly connected to the vertical plate on one side, and the drive assembly is provided on the other side;

[0008] The detection component is located at the end of the drive component away from the electrical integrated box;

[0009] The driving component is used to control the detection component to achieve displacement in the horizontal direction;

[0010] The detection assembly includes a housing, a lens, and a detector;

[0011] The outer casing has a detection hole at its center, and the lens and detector are coaxially arranged inside the detection hole.

[0012] In one embodiment, a counterweight is provided on the side of the vertical plate away from the electrical integration box.

[0013] Furthermore, the counterweight is a hollow structure that runs vertically through the plate, with its upper end flush with the upper surface of the vertical plate and its lower end forming an open space with the side of the vertical plate.

[0014] In one embodiment, the telescopic component is a pen-shaped cylinder, including a cylinder barrel, a piston, a piston rod, and a solenoid valve; the solenoid valve is located at the lower part of the cylinder barrel, and one end is connected to the electrical integrated box.

[0015] Furthermore, the end of the piston rod extending out of the cylinder barrel is a threaded rod structure.

[0016] In one embodiment, the length of the vertical plate and the horizontal plate is not less than the length of the cylinder barrel, and the width is not less than the width of the electrical integration box.

[0017] Furthermore, the width of the counterweight is not less than 1 / 6 of the length of the vertical or horizontal plate.

[0018] This utility model also provides a laser module for a photopolymer 3D printer, including a mounting base plate, a laser emitter, a total reflection mirror, a beam shaper, and a laser power detection device as described above.

[0019] In one embodiment, the total reflection mirror includes a mirror base, a mirror body, an angle adjustment module, and a height adjustment module; the mirror body is located in the middle of the mirror base, the angle adjustment module is located on the back side of the mirror base and can adjust the tilt angle of the mirror base, and the height adjustment module is located on the lower side of the mirror base and the mirror body and can adjust the horizontal installation height of the mirror base, the mirror body, and the angle adjustment module; the beam shaper includes a collection window.

[0020] Furthermore, the laser power detection device is located between the total reflection mirror and the beam shaper, and when the driving component drives the detection component into the optical path, the lens, the mirror body, and the acquisition window are coaxial and collinear.

[0021] In summary, compared with the prior art, the utility model has the following beneficial effects:

[0022] The laser power detection device provided by this utility model, through a retractable drive component and a rotatable rotating component, can control the reciprocating motion of the detection component in the horizontal direction and its rotation around the axis. When detection is required, the detection component is moved into the optical path, and after detection is completed, it is moved out of the optical path. This avoids damage to the detection component due to long-term exposure to the laser, reduces interference with the optical path, ensures normal transmission and focusing of the laser, and comprehensively realizes flexible detection and real-time online monitoring of laser power.

[0023] In addition, an L-shaped mounting base and counterweight design were adopted, which effectively solved the problem of force imbalance caused by unilateral installation and improved the mechanical stability of the overall structure.

[0024] The laser module for photopolymer 3D printers provided by this utility model is equipped with a retractable and rotatable laser power detection device, which can monitor the laser power in real time to ensure the stability and reliability of 3D printing. It can also reduce the risk of long-term exposure damage to the detection components and extend the service life of the equipment. At the same time, with an adjustable tilt angle and horizontal height total reflection mirror, the optical path can be flexibly adjusted, reducing the work caused by repeated disassembly and assembly of equipment and components. Attached Figure Description

[0025] 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the laser power detection device provided in Embodiment 1 of this utility model;

[0027] Figure 2 This is a schematic diagram of the mounting base structure provided in Embodiment 1 of this utility model;

[0028] Figure 3 This is a schematic diagram of the drive component structure provided in Embodiment 1 of this utility model;

[0029] Figure 4 This is an exploded view of the rotating component provided in Embodiment 1 of this utility model;

[0030] Figure 5 This is a schematic diagram of the toothed disc structure provided in Embodiment 1 of this utility model;

[0031] Figure 6 This is a schematic diagram of the laser module structure for a photopolymer 3D printer provided in Embodiment 2 of this utility model;

[0032] Figure 7This is a schematic diagram of the total reflection mirror structure provided in Embodiment 2 of this utility model.

[0033] Figure label:

[0034] 100-Mounting base; 110-Vertical plate; 120-Horizontal plate; 111, 121-Waist hole; 112-Counterweight; 200-Electrical integrated box; 300-Drive assembly; 310-Cylinder barrel; 320-Piston; 330-Piston rod; 340-Solenoid valve; 400-Detection assembly; 410-Housing; 420-Lens; 430-Detector; 500-Rotating assembly; 510-Base; 520-Base plate; 530-Gear plate; 531-Gear; 540-Coaxial fastener; 10-Mounting base plate; 20-Laser emitter; 30-Total reflection mirror; 31-Mirror mount; 32-Mirror body; 33-Angle adjustment module; 34-Height adjustment module; 40-Beam shaper; 41-Acquisition window; 50-Laser power detection device. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0036] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", "center", "axis", "horizontal", "vertical", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0037] Example 1

[0038] This embodiment provides a laser power detection device, see reference. Figure 1 As shown, it includes a mounting base 100, an electrical integration box 200, a drive assembly 300, and a detection assembly 400.

[0039] See Figure 2 As shown, the mounting base 100 has an L-shaped structure, including a vertical plate 110 and a horizontal plate 120 that are perpendicular to each other; the mounting base 100 is provided with a plurality of waist holes 111, 121.

[0040] One side of the electrical integrated box 200 is fixedly connected to the vertical plate 110;

[0041] Specifically, a hexagonal bolt is passed through the waist hole 111 on the vertical plate 110 to the back side of the vertical plate 110, and then secured with a hexagonal nut.

[0042] The electrical integrated box 200 has a drive assembly 300 on the other side, which is used to control the detection assembly 400 to achieve displacement in the horizontal direction;

[0043] In this embodiment, refer to Figure 3 As shown, the drive assembly 300 is a pen-shaped cylinder, including a cylinder barrel 310, a piston 320, a piston rod 330, and a solenoid valve 340;

[0044] The cylinder barrel 310, piston 320, and piston rod 330 are coaxially assembled, and the piston 320 is located inside the cylinder barrel 310. One end of the piston rod 330 extends out of the end face of the cylinder barrel 310, and the end of the piston rod 330 extending out of the cylinder barrel 310 is a threaded rod structure.

[0045] The solenoid valve 340 is located at the lower part of the cylinder 310, and one end of the cylinder 310 and the solenoid valve 340 are connected to the electrical integrated box 200.

[0046] The detection component 400 is provided at the end of the drive component 300 away from the electrical integrated box 200.

[0047] The detection component 400 includes a housing 410, a lens 420, and a detector 430;

[0048] The outer casing 410 has a detection hole at its center, and the lens 420 and the detector 430 are coaxially arranged in the detection hole.

[0049] In practical use, the laser passes through the lens 420 in the detection hole and reaches the detector 430, where the laser power is detected.

[0050] In this embodiment, preferably, a counterweight 112 is provided on the side of the vertical plate 110 away from the electrical integrated box 200, which is used to solve the problem of force imbalance caused by installing the electrical integrated box 200, the drive component 300 and the detection component 400 on one side of the vertical plate 110, and improve the overall structural mechanical stability of the laser power detection device.

[0051] In this embodiment, preferably, the length of the vertical plate 110 and the horizontal plate 120 is not less than the length of the cylinder barrel 310, and the width is not less than the width of the electrical integrated box 200; the width of the counterweight 112 is not less than 1 / 6 of the length of the vertical plate 110 or the horizontal plate 120.

[0052] In this embodiment, a more preferred embodiment is described in the following reference. Figure 4 As shown, it also includes a rotating component 500, one end of which is connected to the driving component 300 and the other end of which is connected to the detection component 400, for controlling the detection component 400 to rotate around the axis in the direction of the axis of the rotating component 500;

[0053] The rotating assembly 500 includes a base 510, a base plate 520, a gear plate 530, and a coaxial fixing member 540.

[0054] The base 510, base plate 520, and gear plate 530 are sequentially and coaxially assembled via the coaxial fastener 540, and the gear plate 530 can rotate relative to the base plate 520.

[0055] Specifically, the base 510 is a hollow columnar structure with an open bottom and a through hole in the center of the top surface. The inner sidewall is threaded and can be threaded to the end of the piston rod 330.

[0056] The base plate 520 and the toothed plate 530 are solid flat cylindrical structures made of PVC material, and each has a through hole in the center of the shaft for matching the coaxial fastener 540 to achieve coaxial assembly.

[0057] The base disk 520 and the toothed disk 530 have the same radius, and both are smaller than the radius of the base 510;

[0058] The toothed disk 530 has teeth 531 arranged in a circular array around its axis on the side near the base disk 520. (See reference...) Figure 5 As shown, the tooth tip of the tooth 531 is parallel to the bottom plane of the tooth disk 530, and the vertical distance between the tooth root near the axis and the bottom plane is greater than the vertical distance between the tooth root far from the axis and the bottom plane.

[0059] During specific assembly, the coaxial fastener 540 is a semi-threaded bolt that passes through the outer shell 410, gear plate 530, base plate 520, and base 510 of the detection component 400 in sequence, and is fastened with a nut inside the base 510.

[0060] It should also be noted that, according to actual design needs, those skilled in the art may add metal or rubber gaskets for assistance during the assembly process, but these shall still be within the protection scope of this utility model.

[0061] Example 2

[0062] This embodiment provides a laser module for a photopolymer 3D printer. (See attached document.) Figure 6 As shown, it includes a mounting base plate 10, a laser emitter 20, a total reflection mirror 30, a beam shaper 40, and a laser power detection device 50 provided in Embodiment 1 of this utility model;

[0063] See Figure 7 As shown, the total reflection mirror 30 includes a mirror base 31, a mirror body 32, an angle adjustment module 33, and a height adjustment module 34. The mirror body 32 is located in the middle of the mirror base 31, the angle adjustment module 33 is located on the back side of the mirror base 31 and can adjust the tilt angle of the mirror base 31, and the height adjustment module 34 is located on the lower side of the mirror base 31 and the mirror body 32 and can adjust the horizontal installation height of the mirror base 31, the mirror body 32, and the angle adjustment module 33.

[0064] The beam shaper 40 includes a collection window 41 for collecting the laser beam reflected by the total reflection mirror 30.

[0065] During specific assembly, the laser emitter 20, total reflection mirror 30, beam shaper 40, and laser power detection device 50 are installed on the mounting base plate 10 at corresponding positions according to the optical path design requirements. The laser power detection device 50 is positioned between the total reflection mirror 30 and the beam shaper 40. After the driving component 300 drives the detection component 400 into the optical path, the lens 420 is coaxial and collinear with the mirror body 32 and the acquisition window 41. Then, based on the angle of the lens 420 of the laser incident laser power detection device 50, the normal pose of the detection component 400 is adjusted by the rotation component 500.

[0066] In practical use, the detection component 400 is driven by the driving component 300 to reach the laser optical path to perform laser power detection. After the detection is completed, the detection component 400 is driven away from the optical path range again to avoid damage to the detection component 400 due to long-term exposure to the laser.

[0067] Although this document frequently uses terms such as laser power detection device, pen-shaped cylinder, mounting base, electrical integrated box, drive assembly, detection assembly, vertical plate, horizontal plate, waist hole, counterweight, shell, lens, detector, detection hole, cylinder barrel, piston, piston rod, solenoid valve, rotating assembly, base, base plate, gear plate, coaxial fastener, tooth, tooth top, tooth bottom, threaded rod, circumferential array, axis, axis, through hole, bottom plane, internal sidewall, L-shaped structure, hollow columnar structure, solid flat cylindrical structure, open space, including mounting base plate, laser emitter, total reflection mirror, beam shaper, laser module, mirror base, mirror body, angle adjustment module, height adjustment module, acquisition window, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

[0068] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A laser power detection device, characterized in that: Includes a mounting base (100), an electrical integration box (200), a drive assembly (300), and a detection assembly (400); The mounting base (100) has an L-shaped structure, including a vertical plate (110) and a horizontal plate (120) that are perpendicular to each other. The mounting base (100) is provided with a plurality of waist holes (111, 121); The electrical integrated box (200) is fixedly connected to the vertical plate (110) on one side, and the drive assembly (300) is provided on the other side. The detection component (400) is located at the end of the drive assembly (300) away from the electrical integrated box (200); The driving component (300) is used to control the detection component (400) to achieve displacement in the horizontal direction; The detection component (400) includes a housing (410), a lens (420), and a detector (430). The outer casing (410) has a detection hole at its center, and the lens (420) and the detector (430) are coaxially arranged in the detection hole.

2. The laser power detection device according to claim 1, characterized in that: A counterweight (112) is provided on the side of the vertical plate (110) away from the electrical integrated box (200).

3. The laser power detection device according to claim 2, characterized in that: The counterweight (112) is a hollow structure that runs vertically through the top and bottom. Its upper end is flush with the upper surface of the vertical plate (110), and its lower end forms an open space with the side of the vertical plate (110).

4. The laser power detection device according to claim 3, characterized in that: The drive assembly (300) is a pen-shaped cylinder, including a cylinder barrel (310), a piston (320), a piston rod (330), and a solenoid valve (340). The solenoid valve (340) is located at the lower part of the cylinder (310), and one end is connected to the electrical integrated box (200).

5. The laser power detection device according to claim 4, characterized in that: The piston rod (330) has a threaded rod structure at one end extending out of the cylinder barrel (310).

6. The laser power detection device according to claim 4, characterized in that: The length of the vertical plate (110) and the horizontal plate (120) is not less than the length of the cylinder barrel (310), and the width is not less than the width of the electrical integrated box (200).

7. The laser power detection device according to claim 6, characterized in that: The width of the counterweight (112) is not less than 1 / 6 of the length of the vertical plate (110) or the horizontal plate (120).

8. A laser module for a photopolymer 3D printer, comprising a mounting base plate (10), a laser emitter (20), a total reflection mirror (30), and a beam shaper (40), characterized in that: It also includes the laser power detection device (50) as described in any one of claims 1 to 7.

9. The laser module for a photopolymer 3D printer according to claim 8, characterized in that: The total reflection mirror (30) includes a mirror base (31), a mirror body (32), an angle adjustment module (33), and a height adjustment module (34). The mirror body (32) is located in the middle of the mirror base (31), the angle adjustment module (33) is located on the back side of the mirror base (31) and can adjust the tilt angle of the mirror base (31), and the height adjustment module (34) is located on the lower side of the mirror base (31) and the mirror body (32) and can adjust the horizontal installation height of the mirror base (31), the mirror body (32) and the angle adjustment module (33); The beam shaper (40) includes an acquisition window (41).

10. The laser module for a photopolymer 3D printer according to claim 9, characterized in that: The laser power detection device (50) is located between the total reflection mirror (30) and the beam shaper (40), and when the driving component (300) drives the detection component (400) into the optical path, the lens (420) is coaxial and collinear with the mirror body (32) and the acquisition window (41).

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