UV photocuring part identification device and identification method

Abstract

The invention provides a UV photocuring part identification device and method. The UV photocuring part identification device comprises a supporting base, an X-axis moving assembly, a Y-axis moving assembly, a Z-axis moving assembly, an identification machining assembly supporting base, a laser ranging assembly, an identification assembly and a part flexible rapid clamping tool. Wherein the X-axis moving assembly, the Y-axis moving assembly and the Z-axis moving assembly jointly form a three-axis servo platform, and the three-axis servo platform is installed on the supporting base and used for controlling movement of the identification assembly; the identification assembly comprises UV resin, a UV resin spray head and an LED ultraviolet irradiation system and is used for spraying the UV resin and curing the UV resin. The laser ranging assembly and the UV resin spray head are installed approximately coaxially, the laser ranging assembly is used for measuring the distance between the UV resin spray head and the surface of the part in real time, the height of the UV resin spray head can be conveniently adjusted through a control system, and identification machining of the curved surface part is achieved. And the LED ultraviolet irradiation system is mounted near the UV resin spray head and is used for curing the sprayed UV resin.

Description

Technical Field

[0001] This invention relates to the field of parts marking, and more particularly to a UV-curable parts marking device and marking method. Background Technology

[0002] With the continuous advancement of modern aircraft manufacturing technology, the pace of product upgrades in the aviation industry is accelerating. The diverse types and small batches of aviation parts place high demands on the identification and sorting of these parts during the manufacturing process. A statistical analysis of the parts requiring identification, taking aluminum alloys as an example, reveals approximately 50,000 machined parts and over 6,300 skin-type parts. Faced with such a wide variety of aviation parts with a degree of similarity, manual identification and sorting is difficult and inefficient. Currently, the turnover process for small-sized structural parts primarily uses metal turnover tags for identification, with permanent ink markings applied after surface treatment. However, these turnover tags frequently need to be removed during processing, and separation from the parts is common during turnover, especially during surface treatment stages such as painting. After painting, accurately tracking the part markings becomes extremely difficult, posing a serious quality hazard to the correct differentiation of parts.

[0003] In industrial applications, laser marking is commonly used for marking parts. However, the thermal and notch effects of laser marking can impact the fatigue life of parts. If marking errors occur during the process, they cannot be corrected; the marked area must be ground down, further reducing its fatigue life. Therefore, laser marking is not suitable for part-level marking of aerospace components. Summary of the Invention

[0004] This invention provides a UV-curable part marking device and method, thereby solving quality problems such as difficulty in distinguishing between aerospace parts before and after surface treatment, parts being mixed up, and parts being lost.

[0005] To achieve the above objectives, the technical solution is as follows: In a first aspect, this application provides a UV-curable part marking device, comprising a support base (1), an X-axis moving assembly (2), a Y-axis moving assembly (4), a Z-axis moving assembly (3), a marking processing assembly support base (5), a laser ranging assembly (6), a marking assembly (7), and a flexible quick-clamping fixture for parts (8), wherein: The X-axis moving component (2), Y-axis moving component (4) and Z-axis moving component (3) together form a three-axis servo platform, which is installed on the support base (1) and is used to control the movement of the marking component (7); the marking component (7) includes UV resin (7-1), UV resin nozzle (7-2) and LED ultraviolet light irradiation system (7-3), which is used to spray UV resin and cure it; The laser ranging component (6) is installed almost coaxially with the UV resin nozzle (7-2) to measure the distance between the UV resin nozzle (7-2) and the surface of the part in real time, so that the control system can adjust the height of the UV resin nozzle (7-2) to realize the marking processing of curved parts. The LED ultraviolet irradiation system (7-3) is installed near the UV resin nozzle (7-2) and is used to cure the sprayed UV resin.

[0006] Specifically, the flexible quick clamping fixture (8) for parts includes a clamping fixture base (8-1), on which a vacuum adsorption movable support unit (8-2) and a V-groove movable support unit (8-3) are installed. The vacuum adsorption movable support unit (8-2) can realize adaptive support and adsorption fixation of planar or curved metal parts, and the V-groove movable support unit (8-3) is used to fix conduit-type metal parts.

[0007] Specifically, the three-axis servo platform is mounted on the support base to realize the three-dimensional movement of the marking component; the laser ranging component is mounted nearly coaxially with the UV resin nozzle to measure the distance between the UV resin nozzle and the part to be marked in real time, thereby maintaining the distance between the UV resin nozzle and the curved surface part.

[0008] Specifically, the LED ultraviolet irradiation system is installed near the UV resin nozzle to cure the resin material sprayed from the UV nozzle; the flexible quick clamping fixture for parts is fixed on the support base to quickly fix planar metal parts, curved metal parts, or conduit-like parts.

[0009] Specifically, the support base (1) supports the X-axis moving component (2) and the flexible quick clamping fixture (8) for the parts. The marked part (9) is fixed on the flexible quick clamping fixture (8). The X-axis moving component (2), the Y-axis moving component (4) and the Z-axis moving component (3) are connected in sequence through guide rails and sliders. The marking processing component support base (5) is fixed on the Y-axis moving component (4) and supports the laser ranging component (6) and the marking component (7).

[0010] Specifically, both the vacuum adsorption movable support unit (8-2) and the V-groove movable support unit (8-3) are connected to the cylinder. By adjusting the pressure in the pipes (b) and (c) connected to the cylinder, the support unit can be controlled to move up and down. By controlling the pipe (a) connected to the vacuum adsorption movable support unit (8-2), the adsorption and fixation between the vacuum suction cup and the part can be achieved. By controlling the cylinder pressure in the support unit, adaptive support for different parts can be achieved, which is convenient for marking and processing of curved parts or conduit-type parts.

[0011] Specifically, pipe (a) is connected to the vacuum suction cup and is used to control the adsorption and fixation of the vacuum suction cup and the part. Pipes (b) and (c) are connected to the cylinder and are used to adjust the cylinder pressure to drive the vacuum suction cup to make linear motion.

[0012] Secondly, this application provides a UV-curable component marking method, which utilizes the aforementioned UV-curable component marking method, comprising: Step 1: Fix planar, curved, or conduit-like parts by controlling the movement / adsorption operation of the V-groove movable support unit (8-3) and the vacuum adsorption movable support unit (8-2) through the pressure regulation system; Step 2: Move the UV resin nozzle (7-2) close to the surface of the part by means of the servo control unit, and adjust the distance between the UV resin nozzle (7-2) and the surface of the part in real time according to the measurement data of the laser ranging component (6); Step 3: Print the identification characters according to the set parameters, and at the same time turn on the LED ultraviolet light irradiation system (7-3) to cure the sprayed UV resin.

[0013] Compared with the prior art, the beneficial effects of the present invention are: (1) The marking method adopted in the present invention has a fast curing speed, which can greatly improve production efficiency, is suitable for rapid continuous production in industrial production lines, and reduces turnover space and time; (2) The part marking manufacturing process does not release organic solvents, which is both hygienic and safe, and does not waste resources. It meets the requirements of modern industrial environmental protection and is a typical green material; (3) The part marking can be cured at room temperature and can be widely used on heat-sensitive substrates (such as wood, plastic and leather) and objects with high heat capacity (such as metal plates); (4) The part marking has excellent performance and is significantly improved in terms of wear resistance, gloss and chemical resistance compared with conventional products. Attached Figure Description

[0014] The accompanying drawings are provided to further explain and illustrate the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0015] Figure 1 This is a schematic diagram of a UV-curable marking device. Figure 2 This is a diagram of the overall system of a UV curing marking device; Figure 3 A schematic diagram of a flexible clamping device for UV curing marking. Figure 4 A flowchart of a feasibility study for a UV-curable marking process; Figure 5 This is a schematic diagram of a typical case 1 of a UV-curable part marking device and marking method; Figure 6This is a schematic diagram of a typical case 2 of a UV-curable part marking device and marking method; Figure 7 This is a schematic diagram of a typical case 3 of a UV-curable part marking device and method; Legend: (1) Support base; (2) X-axis moving assembly; (2-1) X-axis linear guide; (2-2) X-axis servo motor; (2-3) X-axis ball screw; (2-4) X-axis slider; (3) Z-axis moving assembly; (3-1) Z-axis linear guide; (3-2) Z-axis servo motor; (3-3) Z-axis ball screw; (3-4) Z-axis slider; (4) Y-axis moving assembly; (4-1) Y-axis linear guide; (4-2) Y-axis servo motor; (4-3) Y-axis ball screw; (4-4) Y-axis slider; (5) Marking processing (6) Component support base; (7) Laser ranging component; (8) Marking component; (9) UV resin; (10) UV resin nozzle; (11) LED ultraviolet irradiation system; (12) Part flexible quick clamping fixture; (13) Part marking after UV curing; (14) Flat metal part to be marked; (15) Curved metal part to be marked; (16) Conduit metal part to be marked. Detailed Implementation

[0016] UV (ultraviolet) curing technology is a newly developed green molding technology in recent years. Its main principle is that when liquid photosensitive resin is irradiated with UV light, the photoinitiator absorbs photons of specific wavelengths and becomes excited, forming free radicals or cations. This ultimately leads to a polymerization reaction within seconds, resulting in curing. The reaction process is a physical process, with fast curing speed and environmental friendliness, and is widely used in aerospace, printing, machinery, and electronics industries. Introducing UV curing technology into the field of parts marking, and developing new marking methods and processes, can provide technical support for the rapid and efficient manufacturing of aerospace parts.

[0017] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The specific embodiments described are only used to explain the present invention and are not intended to limit the present invention.

[0018] Example 1 like Figure 1 As shown, this application provides a UV-curable part marking device, including a support base (1), an X-axis moving assembly (2), a Y-axis moving assembly (4), a Z-axis moving assembly (3), a marking processing assembly support base (5), a laser ranging assembly (6), a marking assembly (7), and a flexible quick-clamping fixture for parts (8), wherein: The X-axis moving component (2), Y-axis moving component (4) and Z-axis moving component (3) together form a three-axis servo platform, which is installed on the support base (1) and is used to control the movement of the marking component (7); the marking component (7) includes UV resin (7-1), UV resin nozzle (7-2) and LED ultraviolet light irradiation system (7-3), which is used to spray UV resin and cure it.

[0019] The X-axis direction is the same as the X-axis ball screw (2-3), and the positive direction points to the X-axis servo motor (2-2); the Y-axis direction is the same as the Y-axis ball screw (4-3), and the positive direction points to the Y-axis servo motor (4-2); the Z-axis direction is the same as the Z-axis ball screw (3-3), and the positive direction points to the Z-axis servo motor (3-2).

[0020] The laser ranging component (6) is installed nearly coaxially with the UV resin nozzle (7-2) to measure the distance between the UV resin nozzle (7-2) and the surface of the part in real time, so that the control system can adjust the height of the UV resin nozzle (7-2) to realize the marking processing of curved parts.

[0021] The LED ultraviolet irradiation system (7-3) is installed near the UV resin nozzle (7-2) and is used to cure the sprayed UV resin.

[0022] The flexible and quick clamping fixture (8) for parts includes a clamping fixture base (8-1), on which a vacuum adsorption movable support unit (8-2) and a V-groove movable support unit (8-3) are installed. The vacuum adsorption movable support unit (8-2) can realize adaptive support and adsorption fixation of planar or curved metal parts, and the V-groove movable support unit (8-3) is used to fix conduit-type metal parts.

[0023] Specifically, the three-axis servo platform is mounted on the support base to realize the three-dimensional movement of the marking component; the laser ranging component is mounted nearly coaxially with the UV resin nozzle to measure the distance between the UV resin nozzle and the part to be marked in real time, thereby maintaining the distance between the UV resin nozzle and the curved part; the LED ultraviolet irradiation system is installed near the UV resin nozzle to cure the resin material sprayed by the UV nozzle; and the flexible quick-clamping fixture for the part is fixed on the support base to quickly fix planar metal parts, curved metal parts, or conduit-like parts.

[0024] Specifically, Figure 2The overall system diagram of the UV curing marking device is shown. The support base (1) supports the X-axis moving component (2) and the flexible quick clamping fixture (8) for the parts. The marked part (9) is fixed on the flexible quick clamping fixture (8). The X-axis moving component (2), the Y-axis moving component (4) and the Z-axis moving component (3) are connected in sequence through guide rails and sliders. The marking processing component support base (5) is fixed on the Y-axis moving component (4) and supports the laser ranging component (6) and the marking component (7).

[0025] Both the vacuum adsorption movable support unit (8-2) and the V-groove movable support unit (8-3) are connected to the cylinder. By adjusting the pressure in the pipes (b) and (c) connected to the cylinder, the support unit can be controlled to move up and down. By controlling the pipe (a) connected to the vacuum adsorption movable support unit (8-2), the adsorption and fixation between the vacuum suction cup and the part can be realized. By controlling the cylinder pressure in the support unit, adaptive support for different parts can be realized, which is convenient for marking and processing of curved parts or conduit-type parts.

[0026] Among them, pipe (a) is connected to the vacuum suction cup and is used to control the adsorption and fixation of the vacuum suction cup and the part. Pipes (b) and (c) are connected to the cylinder and are used to adjust the cylinder pressure to drive the vacuum suction cup to make linear motion.

[0027] Figure 4 The flowchart for the feasibility study of UV curing marking technology mainly includes the following steps: S1. By studying the acid and alkali resistance, interaction with the temperature field, paint layer adhesion and erasure properties, the composition and type of UV-curable resin to be used in the future were determined. The stability of the marking under long-term heat treatment temperature was investigated and the paint layer adhesion of the marking area was studied. S2, through the fatigue performance verification of UV-cured parts, to explore the influence of UV-cured marking process on the static mechanical properties and fatigue life of materials; S3. Process research on this technology is conducted by carrying out process experiments on parameters such as marking line width, character height, character width, character thickness, and curing irradiation distance and time.

[0028] Example 2 This application provides a UV-curable component marking method, implemented using the UV-curable component marking device described in the above embodiment, the method comprising: Step 1: Fix planar, curved, or conduit-like parts by controlling the movement / adsorption operation of the V-groove movable support unit (8-3) and the vacuum adsorption movable support unit (8-2) through the pressure regulation system; It should be noted that, Figure 3This is a schematic diagram of a flexible and rapid clamping fixture for parts. A vacuum adsorption movable support unit (8-2) and a V-groove movable support unit (8-3) are installed on the clamping fixture base (8-1). The support unit is connected to a cylinder. By adjusting the pressure in the pipes (b) and (c) connected to the cylinder, the support unit can be moved up and down. By controlling the pipe (a) connected to the vacuum adsorption movable support unit (8-2), the adsorption and fixation between the vacuum suction cup and the part can be achieved.

[0029] Step 2: Move the UV resin nozzle (7-2) close to the surface of the part by means of the servo control unit, and adjust the distance between the UV resin nozzle (7-2) and the surface of the part in real time according to the measurement data of the laser ranging component (6); Step 3: Print the identification characters according to the set parameters, and at the same time turn on the LED ultraviolet light irradiation system (7-3) to cure the sprayed UV resin.

[0030] Example 3 UV-cured markings on flat metal parts like Figure 5 As shown, in this embodiment, the height of the V-groove movable support unit (8-3) is controlled to decrease by the pressure regulation system, and the height of the vacuum adsorption movable support unit (8-2) is controlled to increase and remain at the same level. The flat metal part (11) to be marked is placed on the vacuum adsorption movable support unit (8-2). The vacuum adsorption movable support unit (8-2) pipeline (a) is evacuated by the vacuum generator so that the vacuum suction cup of the support unit is tightly connected to the part. The UV resin nozzle (7-2) is moved close to the surface of the part by the servo control unit. After adjusting to a suitable distance, the corresponding marking characters are printed according to the preset marking parameters (such as spray pressure, moving speed, etc.). At the same time, the LED ultraviolet irradiation system (7-3) is turned on to cure the sprayed UV resin.

[0031] Example 4 UV-cured markings on curved metal parts like Figure 6As shown, in this embodiment, the height of the V-groove movable support unit (8-3) is lowered by the pressure regulation system, and the curved metal part (12) to be marked is placed on the vacuum adsorption movable support unit (8-2). The height of the vacuum adsorption movable support unit (8-2) is raised until it contacts the surface of the part. The vacuum adsorption movable support unit (8-2) pipeline (a) is evacuated by the vacuum generator so that the vacuum suction cup of the support unit is tightly connected to the part. The UV resin nozzle (7-2) is moved close to the surface of the part by the servo control unit. After adjusting to a suitable distance, the laser ranging component (6) is turned on. The height of the UV resin nozzle (7-2) is adjusted in real time according to the distance feedback of the laser ranging component (6) to ensure that the distance between the UV resin nozzle (7-2) and the surface of the part remains unchanged. The corresponding marking characters are marked according to the preset marking parameters (such as spray pressure, moving speed, etc.). At the same time, the LED ultraviolet irradiation system (7-3) is turned on to cure the sprayed UV resin.

[0032] Example 5 UV-cured markings on conduit metal parts like Figure 7 As shown, in this embodiment, the V-groove movable support unit (8-3) is raised and kept at the same level by the pressure regulation system, and the metal part (13) of the conduit to be marked is placed on the V-groove movable support unit (8-3); the UV resin nozzle (7-2) is moved close to the surface of the part by the servo control unit, and after being adjusted to a suitable distance, the corresponding marking characters are produced according to the preset marking parameters (such as spray pressure, moving speed, etc.), and at the same time the LED ultraviolet irradiation system (7-3) is turned on to cure the sprayed UV resin.

[0033] In summary, this invention discloses a UV-curable part marking device and method. It includes a support base, an X-axis moving component, a Y-axis moving component, a Z-axis moving component, a marking processing component support base, a laser ranging component, a UV resin nozzle, an LED ultraviolet irradiation system, and a flexible, rapid-clamping fixture for parts. The laser ranging component and the UV resin nozzle are mounted nearly coaxially for accurate distance data feedback. The LED ultraviolet irradiation system is installed near the UV resin nozzle for UV resin curing. The flexible, rapid-clamping fixture includes a vacuum adsorption movable support unit and a V-groove movable support unit for supporting and fixing different parts. This invention uses the laser ranging component to provide real-time feedback on the distance between the UV resin nozzle and the part surface, adjusting the UV resin nozzle height accordingly to achieve UV-curable marking processing of curved parts. This invention introduces UV curing technology into the field of part marking, employing a flexible clamping fixture combined with vacuum adsorption for fixation. It is adaptable to marking processing of aerospace parts with different structures and sizes, providing technical support for solving the problem of identification and classification of parts before and after surface treatment on-site.

Claims

1. A UV-curable part marking device, characterized in that, The components include a support base (1), an X-axis moving assembly (2), a Y-axis moving assembly (4), a Z-axis moving assembly (3), a marking and processing assembly support base (5), a laser ranging assembly (6), a marking assembly (7), and a flexible and quick-clamping fixture for parts (8), wherein: The X-axis moving component (2), Y-axis moving component (4) and Z-axis moving component (3) together form a three-axis servo platform, which is installed on the support base (1) and is used to control the movement of the marking component (7); the marking component (7) includes UV resin (7-1), UV resin nozzle (7-2) and LED ultraviolet light irradiation system (7-3), which is used to spray UV resin and cure it; The laser ranging component (6) is installed almost coaxially with the UV resin nozzle (7-2) to measure the distance between the UV resin nozzle (7-2) and the surface of the part in real time, so that the control system can adjust the height of the UV resin nozzle (7-2) to realize the marking processing of curved parts. The LED ultraviolet irradiation system (7-3) is installed near the UV resin nozzle (7-2) and is used to cure the sprayed UV resin.

2. The UV-curable part marking device according to claim 1, characterized in that, The flexible and quick clamping fixture (8) for parts includes a clamping fixture base (8-1), on which a vacuum adsorption movable support unit (8-2) and a V-groove movable support unit (8-3) are installed. The vacuum adsorption movable support unit (8-2) can realize adaptive support and adsorption fixation of planar or curved metal parts, and the V-groove movable support unit (8-3) is used to fix conduit-type metal parts.

3. The UV-curable part marking device according to claim 1, characterized in that, The three-axis servo platform is mounted on the support base to realize the three-dimensional movement of the marking component; the laser ranging component is mounted nearly coaxially with the UV resin nozzle to measure the distance between the UV resin nozzle and the part to be marked in real time, thereby maintaining the distance between the UV resin nozzle and the curved part.

4. The UV-curable part marking device according to claim 1, characterized in that, The LED ultraviolet irradiation system is installed near the UV resin nozzle to cure the resin material sprayed from the UV nozzle; the flexible quick clamping fixture for parts is fixed on the support base to quickly fix planar metal parts, curved metal parts, or conduit-type parts.

5. The UV-curable part marking device according to claim 1, characterized in that, The support base (1) supports the X-axis moving component (2) and the flexible quick clamping fixture (8) for the parts. The marked part (9) is fixed on the flexible quick clamping fixture (8). The X-axis moving component (2), the Y-axis moving component (4) and the Z-axis moving component (3) are connected in sequence through guide rails and sliders. The marking processing component support base (5) is fixed on the Y-axis moving component (4) and supports the laser ranging component (6) and the marking component (7).

6. The UV-curable part marking device according to claim 1, characterized in that, Both the vacuum adsorption movable support unit (8-2) and the V-groove movable support unit (8-3) are connected to the cylinder. By adjusting the pressure in the pipes (b) and (c) connected to the cylinder, the support unit can be controlled to move up and down. By controlling the pipe (a) connected to the vacuum adsorption movable support unit (8-2), the adsorption and fixation between the vacuum suction cup and the part can be achieved. By controlling the cylinder pressure in the support unit, different parts can be adaptively supported, which is convenient for marking and processing of curved parts or conduit-type parts.

7. The UV-curable part marking device according to claim 6, characterized in that, Pipe (a) is connected to the vacuum suction cup and is used to control the adsorption and fixation of the vacuum suction cup and the part. Pipes (b) and (c) are connected to the cylinder and are used to adjust the cylinder pressure to drive the vacuum suction cup to make linear motion.

8. A UV-curable part marking method, characterized in that, The method of using UV-curable part marking according to any one of claims 1 to 7 includes: Step 1: Fix planar, curved, or conduit-like parts by controlling the movement / adsorption operation of the V-groove movable support unit (8-3) and the vacuum adsorption movable support unit (8-2) through the pressure regulation system; Step 2: Move the UV resin nozzle (7-2) close to the surface of the part by means of the servo control unit, and adjust the distance between the UV resin nozzle (7-2) and the surface of the part in real time according to the measurement data of the laser ranging component (6); Step 3: Print the identification characters according to the set parameters, and at the same time turn on the LED ultraviolet light irradiation system (7-3) to cure the sprayed UV resin.

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