Ultraviolet curing device

Abstract

The utility model discloses an ultraviolet curing device which comprises a base and a protective cover used for being buckled on the top face of the base, the protective cover and the top face of the base are mutually buckled to form a curing space, a workpiece to be cured is used for being placed on the top face of the base in the curing space, and the protective cover comprises a cover body. The protective cover is provided with a heat dissipation piece arranged at the top in the cover body in the cover body, and a heat dissipation piece arranged at the top in the cover body, the ultraviolet light source is connected to the bottom surface of the heat dissipation piece; the ejector pin extends from the top in the cover body to the top face of the base, and the tail end, close to the base, of the ejector pin is used for abutting against the workpiece to be cured. The ultraviolet curing device provided by the utility model is used for performing ultraviolet curing on the workpiece, is simple and quick, is beneficial to reducing the size of a related fixing structure of the workpiece, and is particularly suitable for fixing and positioning small workpieces through the ejector pins in the ultraviolet curing device.

Description

Technical Field

[0001] The utility model relates to the technical field of ultraviolet curing, and particularly relates to an ultraviolet curing device. Background Art

[0002] A capsule endoscope is a micro camera designed for photographing the interior of the gastrointestinal tract. It is equipped with a lens assembly for capturing images, and the captured images provide a basis for doctors to make diagnoses. Due to its advantages such as non-invasive, painless, and wide inspection range, the capsule endoscope has been widely promoted and applied in clinical practice.

[0003] However, the space in the capsule endoscope is small. If the lens assembly is fixed in the capsule endoscope by using a buckle or a screw, then space occupied by the buckle or the screw needs to be reserved in the capsule endoscope, as well as the operation space required during the installation and fixation process of the lens assembly. Since the volume of the buckle or the screw is large and the installation is difficult, it is difficult to fix the lens assembly in the capsule endoscope. Summary of the Utility Model

[0004] To solve at least one of the above technical problems existing in the prior art, the utility model provides an ultraviolet curing device, which includes a base and a protective cover for buckling on the top surface of the base. The protective cover and the top surface of the base are buckled with each other to form a curing space, and the workpiece to be cured is placed on the top surface of the base in the curing space. The protective cover includes a cover body, and the protective cover is provided with:

[0005] A heat dissipation member, arranged at the top inside the cover body;

[0006] An ultraviolet light source, connected to the bottom surface of the heat dissipation member; and

[0007] A thimble, extending from the top inside the cover body towards the top surface of the base, and the end of the thimble adjacent to the base is used to abut against the workpiece to be cured.

[0008] The ultraviolet curing device provided by the utility model is used for ultraviolet curing of workpieces. Its fixing method is simple and fast, and it is not necessary to introduce other fixing components, such as screws or buckles, into the capsule endoscope. Therefore, it is beneficial to reduce the volume of the fixing structure related to the workpiece. The lens assembly or other components cured by using this ultraviolet curing device are particularly suitable for products with high volume requirements, such as capsule endoscopes. The thimble in the ultraviolet fixing device is used for fixing and positioning the workpiece to be cured, and is particularly suitable for small chemical workpieces. Description of the Drawings

[0009] The accompanying drawings are used to provide a further understanding of the embodiments of the present utility model and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present utility model, but do not constitute a limitation to the embodiments of the present utility model.

[0010] Figure 1 It is a schematic three-dimensional structure diagram of the ultraviolet curing device provided by this application;

[0011] Figure 2 It is Figure 1 a schematic three-dimensional structure diagram inside the protective cover shown;

[0012] Figure 3 It is Figure 2 a schematic cross-sectional structure diagram of the protective cover shown along the line III-III;

[0013] Figure 4 It is Figure 3 a schematic structure diagram inside the curing space after a tray and a workpiece to be cured are placed in the curing space shown;

[0014] Figure 5A It is Figure 1 a schematic cross-sectional structure diagram of the ultraviolet curing device shown along the line V-V, at this time the protective cover is in a closed state;

[0015] Figure 5B It is Figure 1 a schematic cross-sectional structure diagram of the ultraviolet curing device shown along the line V-V, at this time the protective cover is in an open state;

[0016] Figure 6 It is Figure 4 a schematic three-dimensional structure diagram of the bottom plate of the tray shown;

[0017] Figure 7 It is Figure 4 a schematic three-dimensional structure diagram of the tray and the workpiece to be cured shown;

[0018] Figure 8 It is Figure 4 a schematic partial structure diagram of the workpiece to be cured and the tray shown. Specific Embodiments

[0019] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0020] Please refer to Figures 1 to 3, the present utility model provides an ultraviolet curing device 1000, which includes a base 100 and a protective cover 200 for buckling on the top surface 101 of the base 100. The protective cover 200 and the top surface 101 of the base 100 are buckled with each other to form a curing space 209. The workpiece 2000 to be cured is placed on the top surface 101 of the base 100 in the curing space 209. The protective cover 200 includes a cover body 201 and a heat dissipation member 210, an ultraviolet light source 220, and a thimble 230 disposed inside the cover body 201. Among them, the heat dissipation member 210 is disposed at the inner top of the cover body 201; the ultraviolet light source 220 is connected to the bottom surface of the heat dissipation member 210; the thimble 230 extends from the top inside the cover body 201 towards the top surface 101 of the base 100, and the end of the thimble 230 adjacent to the base 100 is used to abut against the workpiece 2000 to be cured.

[0021] The ultraviolet curing device 1000 provided by the present utility model is used for ultraviolet curing of the workpiece 2000 to be cured. Its fixing method is simple and fast, and it is not necessary to introduce other fixing components, such as screws or buckles, into the workpiece. Therefore, it is beneficial to reduce the volume of the fixing structure related to the workpiece. The lens assembly or other components cured by using the ultraviolet curing device 1000 are particularly suitable for products with high volume requirements, such as capsule endoscopes. The thimble 230 in the ultraviolet curing device 1000 is used for fixing and positioning the workpiece 2000 to be cured, and is particularly suitable for small chemical workpieces.

[0022] As Figures 1 to 4 , and Figure 5A and Figure 5B shown, the base 100 is in a box shape and is used to carry the protective cover 200. The protective cover 200 includes a cover body 201, and the cover body 201 is in a cylindrical shape with an open bottom side and a closed top side. The bottom side of the cover body 201 is used to buckle on the top surface 101 of the base 100. After the cover body 201 and the base 100 are buckled with each other, a closed curing space 209 can be formed. Thus, during the process of ultraviolet curing of the workpiece 2000 to be cured inside the cover body 201, the cover body 201 can protect the skin and eyes of the operator from ultraviolet rays; the cover body 201 can effectively prevent the scattering and reflection of ultraviolet rays, so that the ultraviolet rays can be more concentrated on the glue to be cured, thereby improving the curing efficiency and quality; in addition, the cover body 201 can also prevent external impurities and dust from entering the curing space 209 and avoid interfering with and affecting the curing process.

[0023] As Figure 1 , Figure 5A and Figure 5B shown, the cover body 201 can move relative to the base, so that the protective cover 200 can be switched between an open state and a closed state. When the protective cover 200 is in the closed state ( Figure 5A), the bottom side of the cover body 201 is fastened to the top surface 101 of the base 100. When the protective cover 200 is in the open state ( Figure 5B ), at least part of the bottom side of the cover body 201 is separated from the top surface 101 of the base 100. At this time, the workpiece in the curing space 209 can be taken out, or the workpiece 2000 to be cured can be placed into the curing space 209.

[0024] Preferably, the ultraviolet curing device 1000 includes a guide rod 300. The guide rod 300 is connected to the cover body 201. The guide rod 300 is used to drive the cover body 201 to move, so that at least part of the cover body 201 moves away from the top surface 101 of the base 100, or the cover body 201 is fastened to the top surface 101 of the base 100. That is, the guide rod 300 is used to drive the cover body 201 to move, and thus switch between the open state and the closed state. The end of the guide rod 300 can extend to form a handle as Figure 1 shown. The handle can be used to receive the operation of the operator. For example, the operator can open or close the protective cover 200 by pulling the guide rod 300.

[0025] Preferably, in the present application, the ultraviolet curing device 1000 includes a switch 400 and a power supply 500 that are interconnected with the guide rod 300. When the guide rod 300 drives the cover body 201 to be fastened to the top surface 101 of the base 100, the guide rod 300 triggers the switch 400, and the power supply 500 supplies power to the ultraviolet light source 220, and the ultraviolet light source 220 emits ultraviolet light.

[0026] In this embodiment, both the switch 400 and the power supply 500 are arranged in the internal space of the base 100, and the switch 400 is arranged on the top of the base 100. The guide rod 300 is connected between the cover body 201 and the switch 400. Specifically, the guide rod 300 is connected to the top surface of the cover body 201, extends along the side wall direction of the cover body 201 to the base 100, and is connected to the switch 400 through a through hole formed in the top surface of the base 100. In some embodiments, the end of the guide rod 300 does not always connect to the switch 400. When the guide rod 300 drives the cover body 201 to be in the open state, the end of the guide rod 300 can contact (or be away from) and trigger the switch 400 through the through hole formed in the top surface of the base 100.

[0027] After the guide rod 300 triggers the switch 400, the power supply 500 supplies power to the ultraviolet light source 220, and the ultraviolet light source 220 emits ultraviolet light.

[0028] The ultraviolet curing device 1000 includes a timing relay 600 connected to a power supply 500. The timing relay 600 is used to time the lighting time of the ultraviolet light source 220. When the lighting time of the ultraviolet light source 220 is greater than a preset period, the timing relay 600 controls the power supply 500 to stop supplying power to the ultraviolet light source 220, and the ultraviolet light source 220 stops emitting light.

[0029] The timing relay 600 is disposed inside the base 100. The timing relay 600 is electrically connected to the switch 400 and the power supply 500. Thus, on the one hand, timing starts after the switch 400 is triggered by the guide rod 300, and on the other hand, when the lighting time of the ultraviolet light source 220 is greater than a preset period, the timing relay 600 controls the power supply 500 to stop supplying power to the ultraviolet light source 220.

[0030] Preferably, the ultraviolet curing device 1000 further includes an indicating device 700. After the timing relay 600 controls the power supply 500 to stop supplying power to the ultraviolet light source 220 and the ultraviolet light source 220 stops emitting light, the timing relay 600 can control the power supply 500 to supply power to the indicating device 700, so that the indicating device 700 can emit an indication signal (light, sound, text, etc.) to prompt the user that the next operation can be performed. Preferably, the indicating device 700 is an indicator light.

[0031] As Figures 2 to 4 shown, the ultraviolet light source 220 is disposed inside the cover 201, and the ultraviolet light source 220 can be an ultraviolet LED lamp bead.

[0032] The ultraviolet light source 220 is in thermal contact with a heat dissipation member 210 for heat dissipation. In this embodiment, the heat dissipation member 210 is a radiator with fins. In other embodiments, other forms of heat dissipation members can be used. The top surface of the heat dissipation member 210 is fixed to the inner top of the cover 201, and the heat dissipation member 210 extends downward from the top of the cover 201, that is, extends in the direction of the top surface 101 of the base 100.

[0033] Preferably, the bottom surface of the heat dissipation member 210 is inclined with respect to the top surface 101 of the base 210, so that the light-emitting surface of the ultraviolet light source 220 is inclined with respect to the top surface 101 of the base 100. Thus, it is convenient for the ultraviolet light source 220 to irradiate and cure the workpiece to be cured 2000 from the side of the workpiece to be cured 2000, which is particularly suitable for curing the side wall direction of the workpiece to be cured 2000, and improves the curing efficiency and quality.

[0034] In this embodiment, the protective cover 200 includes two strip-shaped heat dissipation members 210. The bottom surfaces of the two heat dissipation members 210 are arranged opposite to each other, and a plurality of ultraviolet light sources 220 are provided on the bottom surfaces of the two heat dissipation members 210. When the ultraviolet light sources 220 at the bottoms of the two heat dissipation members 210 emit light, they both irradiate towards the position between the two heat dissipation members 210. The workpiece 2000 to be cured is placed on the top surface 101 of the base 100 between the two heat dissipation members 210, which is beneficial to improving the ultraviolet irradiation intensity and the curing efficiency and quality.

[0035] It can be understood that in some embodiments, the number of the heat dissipation members 210 is greater than two, and the multiple heat dissipation members 210 can be arranged in a ring shape, and a plurality of ultraviolet light sources 220 are provided on the bottom surface of at least one heat dissipation member 210.

[0036] As Figure 1 and Figure 2 shown, the protective cover 200 includes a selector 260 provided on the outer side of the cover body. The selector 260 is used to receive the operation of the operator to control the corresponding ultraviolet light source 220 to emit light. In this embodiment, the protective cover 200 includes 4 selectors 260 provided on the top of the cover body 201, corresponding to 4 ultraviolet light sources 220. Each selection corresponds to controlling the opening and closing of one ultraviolet light source 220. Thus, for different curing positions of the workpiece 2000 to be cured, at least some of the ultraviolet light sources 220 can be selected to be turned on, achieving the effect of reducing power consumption and thus realizing energy saving. And reducing the number of turned-on ultraviolet light sources 220 can significantly reduce the temperature in the sealed curing space 209 and avoid damage to the workpiece 2000 to be cured (such as the lens assembly in a capsule endoscope) due to high temperature. In other embodiments, the selector 260 can be flexibly set as needed. The selector 260 can be provided on the front side wall of the cover body 201 or on the top surface of the base 100; the number of the selectors 260 and the corresponding control relationship with the ultraviolet light sources 220 are not specifically limited.

[0037] As Figures 2 to 4 shown, the protective cover 200 includes a thimble 230. The thimble 230 extends from the top inside the cover body 201 towards the top surface 101 of the base 100. The end of the thimble 230 adjacent to the base 100 is used to abut against the workpiece 2000 to be cured, so as to prevent some parts in the workpiece 2000 to be cured from shifting towards the top of the cover body 201 during the curing process and ensure the accuracy of the size of the workpiece after curing.

[0038] The number of the thimbles 230 is multiple and arranged in a certain rule. In this embodiment, the multiple thimbles 230 are arranged in a ring to position the workpiece 2000 to be cured at its periphery, so that the workpiece 2000 to be cured can be uniformly stressed and prevent the parts in the workpiece 2000 to be cured from tilting on one side. Specifically, asFigure 2 As shown, there are multiple ejector pins 230, which are divided into two groups. The multiple ejector pins 230 in each group are arranged in a ring, facilitating the pressing and fixing of two areas to be cured of the workpiece 2000 to be cured.

[0039] The ejector pins 230 are arranged between two adjacent heat dissipation parts 210 and are set corresponding to the position of the workpiece 2000 to be cured.

[0040] Such as Figure 2 and Figure 3 As shown, the protective cover 200 is provided with a plurality of fans 240 inside the cover body 201. The fans 240 are used to dissipate heat from the ultraviolet light source 220 and the heat dissipation parts 210. The two heat dissipation parts 210 are arranged at intervals, and a ventilation channel is formed between the two heat dissipation parts 210. The fans 240 are arranged corresponding to the ventilation channel, thereby facilitating the gas flow inside the protective cover 200 and being beneficial to reducing the temperature inside the closed curing space 209. Such as Figures 4 to 8 As shown, preferably, the ultraviolet curing device 1000 includes a tray 800, and the tray 800 is used to carry the workpiece 2000 to be cured. Preferably, a positioning pin (not shown in the figure) is provided on the top surface 101 of the base 100, and the tray 800 is provided with a positioning hole 814 that cooperates with the positioning pin. The positioning pin is used to insert into the positioning hole 814 to achieve the positioning of the tray 800.

[0041] Preferably, as Figure 6 and Figure 7 As shown, the tray 800 is rectangular, and the tray 800 is provided with 4 positioning holes 814, and each positioning hole 814 is arranged at a corner of the tray 800. In other embodiments, the tray 800 is provided with other numbers of positioning holes 814, and the positions of the positioning holes 814 can be flexibly set according to needs.

[0042] Preferably, the multiple positioning holes 814 are designed asymmetrically, which plays a role in preventing misoperation during the process of placing the tray 800 on the top surface 101 of the base 100, avoiding problems such as curing position deviation and curing failure caused by incorrect placement direction.

[0043] Such as Figures 6 to 8 As shown, the tray 800 includes a bottom plate 810. The positioning holes 814 are formed in the bottom plate 810 and penetrate through the thickness direction of the bottom plate 810. The top surface of the bottom plate 810 is used to carry the workpiece 2000 to be cured. Preferably, a receiving groove 812 is formed on the top surface 810 of the bottom plate 810, and the receiving groove 812 is used to accommodate the bottom of the workpiece 2000 to be cured. Preferably, the shape of the receiving groove 812 matches the shape of the bottom of the workpiece 2000 to be cured, thereby positioning the workpiece 2000 to be cured.

[0044] Preferably, as Figure 7 and Figure 8As shown, in this embodiment, the tray 800 further includes a pressing block 820 disposed on the top surface of the bottom plate 810. The pressing block 820 can rotate relative to the bottom plate 810 on the top surface of the bottom plate 810. Specifically, each pressing block 820 includes a first end 821 and a second end 822. The first end 821 is rotatably connected to the bottom plate 810.

[0045] The second end 822 of the pressing block 820 is used to limit the workpiece 2000 to be cured. Specifically, the bottom of the second end 822 of the pressing block 820 is used to limit the top edge of the workpiece 2000 to be cured. A limiting groove 823 is formed at the bottom of the second end 822. The limiting groove 823 is used to accommodate the peripheral edge of the workpiece 2000 to be cured. The workpiece 2000 to be cured is used to be clamped between the bottom plate 810 and the pressing block 820. The top of the second end 822 is a limiting portion 824. The limiting portion 824 is located at the top of the limiting groove 823. The limiting portion 824 is used to limit the top edge of the workpiece 2000 to be cured. Specifically, it presses in the direction from the pressing block 820 to the bottom plate 810 to prevent the workpiece 2000 to be cured from loosening and shifting in the direction away from the bottom plate 810.

[0046] In some alternative embodiments, the tray 800 only includes the bottom plate 810 and does not provide a pressing block 820 connected to the bottom plate 810.

[0047] As Figure 1 shown, the ultraviolet curing device 1000 includes a plurality of protective covers 200. In some embodiments, the structures of the plurality of protective covers 200 are the same.

[0048] In this embodiment, the ultraviolet curing device 1000 includes two protective covers 200. The component structures in the two protective covers 200 are different to cure workpieces 2000 of different thicknesses. Figure 1 The two protective covers 200 in it are respectively a first protective cover and a second protective cover. The first protective cover located on the left can be called the first station, and the second protective cover located on the right can be called the second station.

[0049] The thicknesses of the workpieces 2000 to be cured in the two protective covers are different. To improve the curing efficiency and quality in the two protective covers 200, optionally, the distances between the ultraviolet light sources 220 in at least two of the protective covers 200 and the top surface 101 of the base 100 are different; and / or the distances between the ends of the ejector pins 230 and the top surface 101 of the base 100 in at least two of the protective covers 200 are different; and / or a tray 800 is provided in each of at least two of the protective covers 200, and the thicknesses of the bottom plates 810 of the two trays 800 are different; and / or a tray 800 is provided in each of at least two of the protective covers 200, and each tray 800 forms a receiving groove 812 on the top surface of the bottom plate 810 for receiving the bottom of the workpiece 2000 to be cured, and the depths of the receiving grooves 812 of the two trays 800 are different..

[0050] In the process of specific ultraviolet curing, the following method can be adopted:

[0051] S101: Coat the surface of the workpiece to be cured with ultraviolet curable glue;

[0052] S102: Place the workpiece to be cured in the first protective cover;

[0053] S103: Close the first protective cover, and the first-stage curing starts;

[0054] S104: After the workpiece to be cured is irradiated with ultraviolet light for the first preset period in the first protective cover, the first-stage curing ends;

[0055] S105: Open the first protective cover and take out the workpiece to be cured;

[0056] S106: Assemble the workpiece to be cured (bend it or stack other parts on its surface), and coat the surface of the assembled workpiece to be cured with ultraviolet curable glue;

[0057] S107: Place the workpiece to be cured in the second protective cover;

[0058] S108: Close the second protective cover, and the second-stage curing starts;

[0059] S109: After the workpiece to be cured is irradiated with ultraviolet light for the second preset period in the second protective cover, the second-stage curing ends;

[0060] S110: Open the second protective cover and take out the workpiece to be cured, and the ultraviolet curing ends.

[0061] The optional embodiments of the embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the embodiments of the present utility model are not limited to the specific details in the above embodiments. Within the scope of the technical concept of the embodiments of the present utility model, various simple modifications can be made to the technical solutions of the embodiments of the present utility model, and these simple modifications all fall within the protection scope of the embodiments of the present utility model.

[0062] In addition, it should be noted that, among the various specific technical features described in the above specific embodiments, they can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present utility model will not separately describe various possible combination methods.

[0063] Furthermore, any combination can be made among the various different embodiments of the embodiments of the present utility model and the specific technical solutions in the embodiments, as long as it does not violate the idea of the embodiments of the present utility model, and it should also be regarded as the content disclosed by the embodiments of the present utility model.

Claims

1. A UV curing device, characterized in that: It includes a base, and a protective cover for buckling on the top surface of the base, the protective cover and the top surface of the base are buckled together to form a curing space, and the workpiece to be cured is used to be placed on the top surface of the base in the curing space. The protective cover includes a cover body, and the protective cover is provided with: A heat sink is arranged at the top of the cover; an ultraviolet light source connected to the bottom surface of the heat sink; as well as An ejector pin extends from the top of the cover body toward the top surface of the base, and the end of the ejector pin adjacent to the base is used to push against the workpiece to be cured.

2. The ultraviolet curing device according to claim 1, characterized in that: There are multiple ejector pins, which are arranged in a ring shape.

3. The ultraviolet curing device according to claim 1, characterized in that: The bottom surface of the heat sink is tilted relative to the top surface of the base, so that the light-emitting surface of the ultraviolet light source is tilted relative to the top surface of the base.

4. The ultraviolet curing device according to claim 3, characterized in that: The ultraviolet curing device includes two heat sinks, the bottom surfaces of the two heat sinks are arranged opposite to each other, and the bottom surfaces of the two heat sinks are each provided with a plurality of ultraviolet light sources, the workpiece to be cured is used to be placed on the top surface of the base between the two heat sinks, and the ejector pin is arranged between the two heat sinks.

5. The ultraviolet curing device according to any one of claims 1 to 4, characterized in that: The ultraviolet curing device includes a guide rod, a switch and a power supply that are connected to each other. The guide rod is connected to the cover body. The guide rod is used to drive the cover body to move so that the cover body is at least partially away from the top surface of the base, or the cover body is buckled on the top surface of the base. When the guide rod drives the cover body to buckle on the top surface of the base, the guide rod triggers the switch, the power supply supplies power to the ultraviolet light source, and the ultraviolet light source emits ultraviolet light.

6. The ultraviolet curing device according to claim 5, characterized in that: The ultraviolet curing device includes a timing relay connected to the power supply, and the timing relay is used to time the light emission time of the ultraviolet light source. When the light emission time of the ultraviolet light source is greater than a preset period of time, the timing relay controls the power supply to stop supplying power to the ultraviolet light source, and the ultraviolet light source stops emitting light.

7. The ultraviolet curing device according to claim 5, characterized in that: The ultraviolet curing device comprises a tray, the tray is used to carry the workpiece to be cured, the top surface of the base is provided with a positioning pin, the tray is provided with a positioning hole matched with the positioning pin, and the positioning pin is used to be inserted into the positioning hole.

8. The ultraviolet curing device according to claim 7, characterized in that: The tray includes a bottom plate and at least one pressing block, each pressing block includes a first end and a second end, the first end is rotatably connected to the bottom plate, and the second end of the pressing block is used to limit the workpiece to be cured.

9. The ultraviolet curing device according to claim 8, characterized in that: A receiving groove is formed on the top surface of the bottom plate, and the receiving groove is used to receive the bottom of the workpiece to be cured; and / or A limiting groove is formed at the bottom of the second end, and the limiting groove is used to accommodate the periphery of the workpiece to be cured.

10. The ultraviolet curing device according to claim 8, characterized in that: The ultraviolet curing device comprises a plurality of the protective covers, wherein the distances between the ultraviolet light sources in at least two of the protective covers and the top surface of the base are different; and / or The ultraviolet curing device comprises a plurality of the protective covers, wherein the distances between the ends of the ejector pins and the top surface of the base in at least two of the protective covers are different; and / or The ultraviolet curing device comprises a plurality of the protective covers, wherein at least two of the protective covers are provided with a tray, and the bottom plates of the two trays have different thicknesses; and / or The ultraviolet curing device includes a plurality of protective covers, wherein at least two of the protective covers are provided with a tray, each of the trays is formed with a receiving groove on the top surface of the base plate, the receiving groove is used to accommodate the bottom of the workpiece to be cured, and the depths of the receiving grooves of the two trays are different.

Images