Plastic skin-touch UV (ultraviolet) excimer curing lamp box

Abstract

The utility model belongs to the technical field of UV curing, and relates to a plastic skin-feeling UV excimer curing lamp box, which comprises a first lamp box, a second lamp box and a third lamp box, different lenses are arranged on the surfaces of the first lamp box, the second lamp box and the third lamp box respectively, and the lenses are configured to enable the first lamp box, the second lamp box and the third lamp box to irradiate light rays with the wavelengths of 395 nm, 185 nm and 254 nm respectively and block infrared light with the wavelength larger than 800 nm; wherein the first lamp box, the second lamp box and the third lamp box are sequentially distributed in the extending direction of the lamp boxes, the first lamp box is used for deep curing, the second lamp box is used for surface modification to form skin feeling, and the third lamp box is used for surface shaping.

Description

TECHNICAL FIELD

[0001] The utility model belongs to UV curing technical field relates to a kind of plastic skin feeling UV excimer curing light box. BACKGROUND

[0002] Plastic products are widely used in consumer electronics, automotive interiors, household appliance shells and other fields. In order to improve user experience, the surface of plastic often needs to be treated specially to have a soft skin effect. Common skin treatment methods include spraying silicone coating, hot pressing texture, UV curing coating, etc. Among them, UV curing technology has become the mainstream solution due to its environmental protection, high efficiency, wear resistance and other advantages.

[0003] The existing UV curing skin process is mainly suitable for small or medium-sized products such as mobile phone cases, mice, keyboards, etc. However, for large-volume, complex-shaped plastic products such as automotive center consoles, instrument panels, door panels, etc., traditional UV curing equipment has the following problems:

[0004] 1. Poor uniformity of irradiation: traditional UV curing systems use one-way irradiation mode, and large-size or multi-curved plastic parts are prone to uneven UV light, resulting in inconsistent skin effect.

[0005] 2. Low curing efficiency: existing equipment often needs to be cured in steps when processing large-volume plastics, which increases the production cycle due to the limitation of UV light source layout.

[0006] 3. Unstable skin effect: existing processes usually rely on single-band UV light such as 395nm for curing, which is difficult to balance deep curing, surface modification and final shaping, resulting in insufficient adhesion or durability of the skin coating.

[0007] Therefore, there is an urgent need for an efficient UV curing system suitable for large-volume, complex-shaped plastic products to achieve uniform skin effect, improve production efficiency, and ensure the appearance quality and durability of plastic products. SUMMARY

[0008] The utility model aims at the deficiencies of the prior art and provides a UV curing equipment and process suitable for large-size, complex-shaped plastic products to overcome the problems of uneven irradiation, low curing efficiency and unstable skin quality in the prior art.

[0009] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0010] A plastic skin feeling UV excimer curing light box, comprising a first light box, a second light box and a third light box;

[0011] The first light box, the second light box and the third light box are respectively provided with different lenses, and the lenses are configured to make the first light box, the second light box and the third light box respectively irradiate light rays of 395nm, 185nm and 254nm wavelengths, and block infrared light above 800nm.

[0012] The first light box, the second light box and the third light box are sequentially distributed along the light box extension direction, the first light box is used for deep curing, the second light box is used for surface modification to form skin feeling, and the third light box is used for surface shaping.

[0013] Further, a plurality of the first light box, the second light box and the third light box are arranged side by side along the vertical direction of the light box to form an arc array of 20°-90°, so as to increase the irradiation angle and area.

[0014] Further, the second light box is provided with two rows or more rows along the light box extension direction.

[0015] Further, the back of the light box is provided with a heat dissipation fin and a heat dissipation fan.

[0016] Further, the water machine is further provided with a pipeline, and the pipeline passes through the heat dissipation fins of the first light box, the second light box and the third light box in sequence to form a loop.

[0017] Further, the power of the first light box, the second light box and the third light box is 150W, 3200W and 500W respectively.

[0018] Further, the length of the first light box, the second light box and the third light box is greater than 1m.

[0019] The present application adopts the partition multi-band UV curing technology, and different wavelengths of UV light are used for irradiation in different areas, including the first stage deep curing using 395nm UV-A to ensure uniform curing of the coating from the inside and improve the adhesion. The second stage surface modification uses 185nm to form a skin feeling effect through photochemical action to improve the surface touch. The third stage surface shaping uses 254nm UV-C adaptive light source to optimize the skin texture and make the skin feeling effect more stable and durable. In addition, in order to adapt to the UV treatment needs of large-size products, the present application adopts an optimized light box layout and irradiation structure to improve the uniformity and stability of UV irradiation, so as to ensure that complex plastic products can still achieve consistent skin feeling effect in batch production.

[0020] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the present application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] The utility model is described in detail below in combination with the drawings, so that the above advantages of the utility model are more explicit.

[0022] Figure 1 is the lamp box group schematic diagram of a plastic skin feeling UV excimer curing lamp box of the utility model;

[0023] Figure 2 is the structure schematic diagram of a plastic skin feeling UV excimer curing lamp box of the utility model;

[0024] Figure 3 is the lamp box schematic diagram of a plastic skin feeling UV excimer curing lamp box of the utility model;

[0025] Figure 4 is the lamp box cross section schematic diagram of a plastic skin feeling UV excimer curing lamp box of the utility model;

[0026] Figure 5 is the schematic diagram of a plastic skin feeling UV excimer curing lamp box of the utility model. DETAILED DESCRIPTION

[0027] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar signs represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, and are intended to explain the utility model, and cannot be understood as the limitation of the utility model.

[0028] In the description of the utility model, it is understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as the limitation of the utility model.

[0029] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0030] In the embodiments of the utility model, unless another definite provision and limitation, the terms "mount", "link", "connect", "fix" and the like terms should be understood in broad sense, for example, can be fixed connection, also can be detachable connection, or be integrated; can be mechanical connection, also can be electrical connection; can be direct connection, also can be indirectly connected through intermediate medium, can be the communication of two elements or the interaction of two elements. For ordinary skilled in the art, the above terms can be understood according to the specific meaning in the utility model.

[0031] Reference attached Figures 1-5 As shown in the figure, a plastic skin feeling UV excimer curing lamp box includes first lamp box 100, second lamp box 200 and third lamp box 300;

[0032] The first lamp box 100, second lamp box 200 and third lamp box 300 surface is equipped with different lens 400 respectively, the lens 400 is configured to make first lamp box 100, second lamp box 200 and third lamp respectively irradiate 395nm, 185nm and 254nm wavelength light, and block 800nm above infrared light;

[0033] Wherein, the first lamp box 100, second lamp box 200 and third lamp box 300 are sequentially distributed along the extension direction of lamp box, the first lamp box 100 is used for deep curing, the second lamp box 200 is used for surface modification to form skin feeling, and the third lamp box 300 is used for surface shaping.

[0034] A plastic skin feeling UV excimer curing lamp box includes first lamp box 100, second lamp box 200 and third lamp box 300, which are sequentially arranged along the extension direction of the lamp box to ensure that the plastic products gradually complete the UV treatment process of deep curing, surface modification and surface shaping on the assembly line.

[0035] 1. Lamp box structure

[0036] The first lamp box 100 is configured with 395nm UV-A light source, which is used for deep curing of the UV coating on the surface of the plastic product, ensuring uniform crosslinking of the coating, improving adhesion and avoiding peeling and cracking during subsequent processing.

[0037] The second lamp box 200 is configured with 185nm and 254nm UV-C light source, which is used for surface modification, changes the molecular structure of the plastic surface through photochemical action, and makes it form smooth or delicate matte skin feeling effect.

[0038] The third lamp box 300 is configured with 185nm and 254nm UV-C light source, which is used for surface shaping, ensuring uniform and stable skin feeling layer and improving the wear resistance and weather resistance of the plastic product.

[0039] 2. Lens 400 design

[0040] Each light box is equipped with a lens 400 designed for specific wavelengths, which precisely controls the transmission and irradiation range of UV light waves to optimize curing effects.

[0041] Lens 400 is made of multi-layer coated optical material, configured to:

[0042] Transmit target wavelengths 395nm, 185nm, 254nm

[0043] Block infrared rays above 800nm IR to avoid deformation of plastic surface or process instability due to heat accumulation

[0044] The structure of lens 400 can be adjusted according to the arrangement of light boxes to cover the curved surface or complex structure of plastic products, ensuring uniform and consistent skin feel.

[0045] 3. Curing process flow

[0046] First stage deep curing: The plastic product passes through the first light box 100, and 395nm UV-A penetrates the coating, making the internal cross-linking of the coating, improving adhesion and hardness.

[0047] Second stage surface modification: The plastic product enters the second light box 200, and 185nm UV-C acts on the plastic surface, triggering photochemical reactions, enhancing surface activity, and forming micro-texture on the surface to improve skin feel.

[0048] 254nm UV-C further optimizes skin feel quality, forming a uniform silky or matte finish.

[0049] Third stage surface shaping: The plastic product passes through the third light box 300, and 185nm+254nm UV-C jointly act on the surface, making the skin feel surface structure finally stable, enhancing scratch resistance, and improving durability.

[0050] 4. Application scope

[0051] It is suitable for large-size and complex curved plastic products, such as automotive interior center console, instrument panel, high-end home appliance panel, electronic device shell, etc.

[0052] Through the optimization design of multi-band UV combined with lens 400, it ensures efficient, uniform and stable curing, and improves production efficiency and product quality.

[0053] In the embodiment, the first light box 100, the second light box 200 and the third light box 300 are arranged side by side in the vertical direction of the light box to form an arc array of 20°-90°, for increasing the irradiation angle and area. In order to adapt to the UV curing needs of large-size and complex curved plastic products and improve the irradiation uniformity, the first light box 100, the second light box 200 and the third light box 300 are arranged side by side in the vertical direction of the light box to form an arc array of 20°-90°, so as to optimize the irradiation angle and irradiation area.

[0054] Since the shape of the plastic product is mostly curved or irregular structure, the traditional planar UV irradiation mode will cause insufficient illumination in some areas, affecting the skin consistency. The arc-shaped light box layout can ensure uniform illumination of the entire surface of the plastic product, eliminate the dead angle of illumination, and avoid uneven local skin effect.

[0055] The traditional single-direction UV curing mode may need to adjust the product placement position or multiple irradiation, reducing the production efficiency. In the embodiment, the multi-angle UV irradiation of the arc array can cover a larger area at one time, improve the production efficiency, and reduce the multi-step processing time.

[0056] In the embodiment, the second light box 200 is arranged in two or more rows along the extension direction of the light box. In order to optimize the UV curing effect of the plastic skin, especially to enhance the UV treatment time in the surface modification stage, the second light box 200 is arranged in two or more rows, while the first light box 100 and the third light box 300 are arranged in one row. Each row contains three light box units to ensure that the workpiece on the assembly line can receive longer UV irradiation in the second stage surface modification, thereby improving the stability and uniformity of the skin treatment.

[0057] Since the formation of the skin mainly depends on the 185nm+254nm UV-C photochemical reaction, its effect is closely related to the irradiation time. The multi-row arrangement can increase the total UV-C receiving time of the workpiece, improve the stability and uniformity of the skin effect. In the assembly line production, the workpiece needs to maintain a certain conveying speed and cannot be too slow, otherwise it will affect the overall productivity. By increasing the number of light box rows from 1 to 2 in the second stage, sufficient UV-C irradiation time can be ensured without reducing the speed of the assembly line, to ensure the complete formation of the skin.

[0058] In the embodiment, the back of the light box is provided with a heat dissipation fin and a heat dissipation fan 500. In order to ensure the stable operation of the light box, improve the UV curing effect, and prolong the service life of the light source, the back of the first light box 100, the second light box 200 and the third light box 300 is provided with a heat dissipation fin and a heat dissipation fan 500 to realize efficient heat dissipation and maintain the normal working temperature of the equipment. The structure and working mode of the heat dissipation fin and the heat dissipation fan 500 belong to the prior art, which will not be described herein.

[0059] In this embodiment, the water machine 600 is provided with a pipeline 610, which sequentially passes through the heat dissipation fins of the first light box 100, the second light box 200 and the third light box 300 to form a loop. In order to further improve the heat dissipation efficiency and ensure that the light box maintains a stable working temperature during long-term operation, the light box further comprises a water machine 600 provided with a pipeline 610, which sequentially passes through the heat dissipation fins of the first light box 100, the second light box 200 and the third light box 300 to form a loop. The water machine 600 provides circulating cooling liquid, which uses liquid cooling to remove the heat generated by the light box during UV irradiation, thereby reducing the internal temperature of the equipment and avoiding the influence of high temperature on the UV curing effect and the service life of the lamp tube. The circulating cooling channel formed by the pipeline 610 enables the cooling liquid to continuously flow through the heat dissipation fin area of each light box, achieving efficient heat exchange and ensuring that the equipment can maintain a suitable temperature when the high-power UV light source is operating. The water machine 600, the pipeline 610 and the water cooling heat dissipation method in this embodiment belong to the prior art, and will not be described again in this embodiment.

[0060] In this embodiment, the power of the first light box 100, the second light box 200 and the third light box 300 is 150W, 3200W and 500W respectively. Among them, the first light box 100 adopts a 150W UV light source to perform deep curing at a wavelength of 395nm. Since 395nm UV-A has strong penetrating power, it can uniformly cure the coating from the inside, so the power at this stage does not have to be too high to avoid premature curing of the surface and affect the overall adhesion.

[0061] The second light box 200 adopts a 3200W high-power UV light source to perform surface modification at wavelengths of 185nm and 254nm. Since 185nm and 254nm belong to the deep ultraviolet UV-C band, they have high energy and can change the molecular structure of the plastic surface through photochemical action to form a stable skin effect. Considering that UV-C light decays greatly in air and sufficient irradiation energy needs to be ensured in the production line, a 3200W high-power light source is adopted to ensure that the plastic surface obtains sufficient UV radiation dose, thereby achieving efficient and uniform skin modification.

[0062] The third light box 300 adopts a 500W UV light source to perform surface sizing at wavelengths of 185nm and 254nm. The main purpose of this stage is to stabilize the structure of the skin coating and improve the surface wear resistance and durability. Therefore, compared with the second light box 200, the demand for UV radiation energy at the surface sizing stage is relatively low, and a 500W power is sufficient to complete the final sizing process.

[0063] Through the high-power UV light source configuration, the skin feeling treatment of the plastic product can be quickly and uniformly completed on the flow line, the production efficiency is improved, and the stability and consistency of the skin feeling effect are ensured, and the high-efficiency UV curing process is suitable for automobile interior parts, household appliance shells and other large-size plastic products.

[0064] In the embodiment, the lengths of the first light box 100, the second light box 200 and the third light box 300 are greater than 1 meter. In order to adapt to the batch flow line production of large-size plastic products and improve the coverage of UV irradiation, the lengths of the first light box 100, the second light box 200 and the third light box 300 are all greater than 1 meter. By increasing the length of the light box, it can be ensured that the UV irradiation area is wide enough, so that the large-volume and complex-shaped plastic products can be fully irradiated during the conveying process, the curing uniformity is improved, and the uneven skin feeling effect or local curing deficiency caused by the too small irradiation area is avoided.

[0065] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can be modified to the technical solutions recorded in the foregoing embodiments, or equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A plastic skin-feel UV excimer curing lamp house characterized by, The first light box (100), the second light box (200) and the third light box (300) are respectively provided with different lenses (400) on the surfaces, and the lenses (400) are configured to make the first light box (100), the second light box (200) and the third light box respectively irradiate light rays with wavelengths of 395nm, 185nm and 254nm, and block infrared light above 800nm. The first light box (100), the second light box (200) and the third light box (300) are sequentially distributed along the light box extension direction, the first light box (100) is used for deep curing, the second light box (200) is used for surface modification to form skin feeling, and the third light box (300) is used for surface shaping. A plurality of the first light box (100), the second light box (200) and the third light box (300) are arranged in parallel along the vertical direction of the light box to form an arc array of 20°-90°, for increasing the irradiation angle and area.

2. The plastic skin-feel UV excimer curing lamp box of claim 1, wherein, The second light box (200) is provided with two rows or more rows along the light box extension direction.

3. The plastic skin-feel UV excimer curing lamp box of claim 2, wherein, The back of the light box is provided with a heat dissipation fin and a heat dissipation fan (500).

4. The plastic skin-feel UV excimer curing lamp box of claim 1, wherein, The water machine (600) is further provided with a pipeline (610) which passes through the heat dissipation fins of the first light box (100), the second light box (200) and the third light box (300) to form a loop.

5. The plastic skin-feel UV excimer curing lamp box of claim 4, wherein, The power of the first light box (100), the second light box (200) and the third light box (300) is respectively 150W, 3200W and 500W.

6. The plastic skin-feel UV excimer curing lamp box of claim 5, wherein, The length of the first light box (100), the second light box (200) and the third light box (300) is greater than 1m.

7. The plastic skin-feel UV excimer curing lamp box of claim 6, wherein, ​

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