An ultraviolet curing device

Abstract

The application relates to an ultraviolet curing device, which comprises a shell, an input structure, an output structure and a light source structure; the shell comprises a heat dissipation shell and a partition plate, the partition plate is arranged in the inner cavity of the heat dissipation shell; the input structure is arranged in an input cavity, and is provided with a plurality of input flow channels, one end of each input flow channel is communicated with a flow guide gap, and the distance between each input flow channel and the side wall of the inner cavity gradually decreases in the direction close to the output cavity; the output structure is arranged in an output cavity, and is provided with a plurality of output flow channels, one end of each output flow channel is communicated with the flow guide gap, and the distance between each output flow channel and the side wall of the inner cavity gradually decreases in the direction away from the input cavity; the light source structure comprises a light source module, the light source module is attached to the outer wall surface of the heat dissipation shell in the height direction of the partition plate, and is opposite to the partition plate. The scheme can timely take away the heat generated in the middle position of the light source module through the cooling medium with a high flow rate, has a good heat dissipation effect, provides the electric conversion efficiency of the light source module, and further improves the curing efficiency and product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of printing or spray-printing two-dimensional code curing devices, and in particular to an ultraviolet curing device. Background Art

[0002] Most printed or spray-printed QR codes are black. Black coatings easily absorb UV light, making it difficult for UV light to penetrate the coating, resulting in poor curing of the QR code. Currently, printed or spray-printed QR codes are typically cured using equipment equipped with a UV curing light source to improve curing efficiency and product quality.

[0003] For example, patent CN 206124220 U discloses a UV curing device, which places the object to be cured in a box and turns on the UV lamp through a UV control device to irradiate the object to cure the object; at the same time, multiple ventilation holes connected to its inner cavity are opened on the box to improve the air flow in the box through air convection, thereby promptly discharging impurity gases in the box, and also playing a role in heat dissipation.

[0004] Because UV lamps generate heat during operation, untimely heat dissipation can affect their electrical conversion efficiency. However, existing patents do not incorporate a heat dissipation structure for UV lamps, relying solely on air convection for heat dissipation. This results in poor heat dissipation and reduces the UV lamp's electrical conversion efficiency. Summary of the Invention

[0005] In view of this, it is necessary to provide an ultraviolet curing device to solve the technical problem that the existing technology does not have a heat dissipation structure for the ultraviolet lamp, and only plays a certain heat dissipation role through air convection, resulting in poor heat dissipation effect and reduced electrical conversion efficiency of the ultraviolet lamp.

[0006] The present invention provides an ultraviolet curing device, which includes:

[0007] The housing comprises a heat dissipation shell and a partition, wherein the partition is provided in an inner cavity of the heat dissipation shell to separate the inner cavity into an input cavity and an output cavity, and the partition is provided at one end in a longitudinal direction thereof at an inner wall of the inner cavity to form a flow guide gap connecting the input cavity and the output cavity;

[0008] An input structure is provided in the input cavity and is provided with a plurality of input flow channels. The plurality of input flow channels are sequentially arranged along the thickness direction of the partition plate, and one end of each input flow channel is connected to the guide gap, and the distance between the input flow channel and the side wall of the inner cavity decreases sequentially along the direction approaching the output cavity, and the other end is used to communicate with the outside to input the cooling medium;

[0009] an output structure provided in the output cavity, which is provided with a plurality of output flow channels, wherein the plurality of output flow channels are sequentially arranged along the thickness direction of the partition plate, and one end of each output flow channel is connected to the guide gap, and the distance between the output flow channel and the side wall of the inner cavity decreases sequentially in the direction away from the input cavity, and the other end is used to communicate with the outside to output the cooling medium; and

[0010] The light source structure includes a light source module, which is attached to the outer wall surface of the heat dissipation shell in the height direction of the partition and faces the partition to generate ultraviolet rays.

[0011] Optionally, the input structure includes a plurality of input fins, which are provided in the input cavity and spaced apart along the thickness direction of the partition plate to form the input flow channel between adjacent input fins, each of the input fins extending along the length direction of the partition plate, and one end of the input fin close to the guide gap is spaced apart from the side wall of the inner cavity, and the distance between the end and the side wall of the inner cavity decreases successively along the direction close to the output cavity, so that each of the input flow channels is connected to the guide gap; and / or,

[0012] The output structure includes a plurality of output fins, which are arranged in the output cavity and spaced apart along the thickness direction of the partition plate to form the output flow channel between adjacent output fins. Each of the output fins extends along the length direction of the partition plate, and one end of the output fin close to the guide gap is spaced apart from the side wall of the inner cavity, and the distance between the end and the side wall of the inner cavity decreases successively in the direction away from the output cavity, so that each of the output flow channels is connected to the guide gap.

[0013] Optionally, one end of each input fin away from the guide gap is spaced apart from the side wall corresponding to the inner cavity, so that one end of a plurality of input flow channels away from the guide gap is connected to each other for inputting cooling medium;

[0014] One end of each output fin away from the guide gap is spaced apart from the side wall corresponding to the inner cavity, so that the ends of the plurality of output flow channels away from the guide gap are connected to each other for outputting the cooling medium.

[0015] Optionally, the partition is spaced apart from the side wall of the inner cavity at one end in the length direction thereof to form the guide gap, and the distance between the end of the partition close to the guide gap and the side wall of the inner cavity is a;

[0016] The input fin close to the output cavity is a main input fin, and the distance between one end of the main input fin adjacent to the guide gap and the side wall of the inner cavity is b;

[0017] The output fin close to the input cavity is a main output fin. The distance between one end of the main output fin adjacent to the guide gap and the side wall of the inner cavity is c, satisfying b<c<a.

[0018] Optionally, the shell further includes a baffle, which is connected to the side wall of the inner cavity, is located in the guide gap, and is spaced apart from the partition along its length direction.

[0019] Optionally, the main input fin and the partition are spaced apart in the thickness direction thereof to form the input flow channel together;

[0020] The main output fin and the partition are spaced apart in a thickness direction thereof so as to form the output flow channel therebetween.

[0021] Optionally, the housing further comprises an outer shell, wherein the outer shell has an installation cavity with an opening on one side;

[0022] The heat dissipation shell is provided in the installation cavity and is provided with an opening communicating with the inner cavity, and the side provided with the opening is covered with the bottom wall of the installation cavity to enclose the inner cavity together with the bottom wall of the installation cavity, wherein the opening of the heat dissipation shell is located on one side thereof in the height direction of the partition;

[0023] The light source module is located in the installation cavity and attached to the outer wall surface of the heat dissipation shell close to the opening of the installation cavity.

[0024] Optionally, a sealing ring is provided between the opening side of the heat dissipation shell and the bottom wall of the installation cavity; and / or,

[0025] The bottom wall of the mounting cavity is provided with an input port and an output port communicating with the outside world, the input port communicating with one end of the plurality of input flow channels away from the flow guide gap, and correspondingly, the output port communicating with one end of the plurality of output flow channels away from the flow guide gap; and / or,

[0026] The housing further includes a cover, which is arranged on a side of the light source module away from the heat dissipation shell and located at the opening of the installation cavity, and is provided with a light-transmitting area corresponding to the light source module.

[0027] Optionally, the light source module includes a substrate and a plurality of ultraviolet chips, the substrate is attached to the outer wall surface of the heat dissipation shell in the thickness direction of the partition and is opposite to the partition, and the plurality of ultraviolet chips are arranged on the side of the substrate away from the heat dissipation shell and are spaced apart along the thickness and length direction of the partition.

[0028] Optionally, the light source modules are provided in multiple groups, and the multiple groups of light source modules are sequentially arranged along the length direction of the partition; and / or,

[0029] The light source module further includes a plurality of lenses, which are sequentially arranged along the thickness direction of the partition, and each lens extends along the length direction of the partition so as to be arranged on a side of the plurality of ultraviolet chips sequentially arranged along the length direction of the partition away from the substrate.

[0030] Compared with the prior art, in the ultraviolet curing device provided by the present invention, the distance between the end of each input channel near the guide gap and the inner cavity side wall decreases in the direction approaching the output cavity; at the same time, the distance between the end of each output channel near the guide gap and the inner cavity side wall decreases in the direction away from the input cavity. In this way, the cooling medium is input from the end of the input channel away from the guide gap, flows in the input channel to the guide gap, is then transported to the output channel through the guide gap, and finally output from the end of the output channel away from the guide gap. Based on the step structure of the input channel and the output channel near the guide gap, the flow rate of the input channel and the output channel near the partition is significantly higher than that of other channels, and the heat generated by the light source module is diffused from the center of the module to the surrounding area, so that the heat generated in the middle of the light source module can be promptly removed by the cooling medium with a faster flow rate, achieving a good heat dissipation effect, thereby improving the electrical conversion efficiency of the light source module, thereby improving the curing efficiency and product quality.

[0031] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the description, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. The specific implementation methods of the present invention are given in detail by the following embodiments and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 A schematic structural diagram of an embodiment of the ultraviolet curing device provided by the present invention;

[0034] Figure 2 for Figure 1 A three-dimensional diagram of the heat dissipation shell, input structure, and output structure;

[0035] Figure 3 for Figure 1 A cross-sectional view of a medium ultraviolet curing device;

[0036] Figure 4 for Figure 1 A cross-sectional view of the ultraviolet curing device from another angle;

[0037] Figure 5 for Figure 4 Cross-sectional view of the heat dissipation shell, input structure and output structure;

[0038] Figure 6 for Figure 5 Top view of the middle heat dissipation shell, input structure and output structure;

[0039] Figure 7 for Figure 6 Partial schematic diagram of the heat dissipation shell, input structure and output structure;

[0040] Figure 8 for Figure 1 A perspective view of the middle shell;

[0041] Figure 9 for Figure 1 A three-dimensional diagram of the central light source module;

[0042] Figure 10 for Figure 9 Top view of the middle substrate and UV chip;

[0043] Figure 11 for Figure 1 Schematic diagram of the flow rate and direction of the cooling medium in each flow channel of the medium ultraviolet curing device.

[0044] Description of reference numerals:

[0045] 100. UV curing device; 1. Housing; 11. Heat dissipation housing; 11a. Inner cavity; 11b. Input cavity; 11c. Output cavity; 11d. Guide gap; 12. Partition; 13. Baffle; 14. Housing; 14a. Mounting cavity; 14b. Input port; 14c. Output port; 14d. Sealing groove; 15. Sealing ring; 16. Cover; 17. Transparent glass; 2. Input structure; 2a. Input flow channel; 2a1. First input flow channel; 2a2. Second input flow channel; 2a3. Third input flow channel Channel; 2a4, fourth input channel; 2b, input position; 21, input fin; 22, main input fin; 3, output structure; 3a, output channel; 3a1, first output channel; 3a2, second output channel; 3a3, third output channel; 3a4, fourth output channel; 3b, output position; 31, output fin; 32, main output fin; 4, light source structure; 41, light source module; 411, substrate; 412, UV chip; 413, lens; 5, electrical connector; 6, pagoda connector. DETAILED DESCRIPTION

[0046] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, and are not used to limit the scope of the present invention.

[0047] See Figures 1 to 10 The ultraviolet curing device 100 includes a shell 1, an input structure 2, an output structure 3 and a light source structure 4; the shell 1 includes a heat dissipation shell 11 and a partition 12, the partition 12 is separated from the inner cavity 11a of the heat dissipation shell 11 to separate the inner cavity 11a into an input cavity 11b and an output cavity 11c, and the partition 12 is separated from the inner wall of the inner cavity 11a at one end in the length direction thereof to form a guide gap 11d connecting the input cavity 11b and the output cavity 11c; the input structure 2 is provided in the input cavity 11b, which is provided with a plurality of input flow channels 2a, and the plurality of input flow channels 2a are sequentially arranged along the thickness direction of the partition 12, and one end of each input flow channel 2a is connected to the guide gap 11d and is connected to the inner cavity 11c. The distance between the side walls of the cavity 11a decreases gradually in the direction approaching the output cavity 11c, and the other end is used to connect to the outside world to input the cooling medium; the output structure 3 is arranged in the output cavity 11c, which is provided with a plurality of output flow channels 3a, and the plurality of output flow channels 3a are arranged in sequence along the thickness direction of the partition 12, and one end of each output flow channel 3a is connected to the guide gap 11d, and the distance between the side wall of the inner cavity 11a decreases gradually in the direction away from the input cavity 11b, and the other end is used to connect to the outside world to output the cooling medium; the light source structure 4 includes a light source module 41, which is attached to the outer wall surface of the heat dissipation shell 11 in the height direction of the partition 12 and is opposite to the partition 12 for generating ultraviolet rays.

[0048] In the UV curing device 100 provided by the present invention, the distance between the end of each input channel 2a near the guide gap 11d and the sidewall of the inner chamber 11a decreases as it approaches the output chamber 11c. Simultaneously, the distance between the end of each output channel 3a near the guide gap 11d and the sidewall of the inner chamber 11a decreases as it moves away from the input chamber 11b. Thus, the cooling medium is introduced from the end of the input channel 2a away from the guide gap 11d, flows through the input channel 2a to the guide gap, and then is transported through the guide gap to the output channel 3a, finally being discharged from the end of the output channel 3a away from the guide gap. Based on the drop structure of the input flow channel 2a and the output flow channel 3a near one end of the guide gap 11d, the flow rate of the input flow channel 2a and the output flow channel 3a near the partition 12 is significantly higher than that of other flow channels, and the heat generated by the light source module 41 diffuses from the center of the module to the surrounding areas, so that the heat generated in the middle position of the light source module 41 can be promptly taken away by a cooling medium with a faster flow rate, thereby achieving a good heat dissipation effect, thereby providing the electrical conversion efficiency of the light source module 41, and thereby improving the curing efficiency and product quality.

[0049] It should be noted that in this embodiment, the cooling medium is water. Furthermore, in the accompanying drawings, the length, thickness, and height directions of the partition 12 are indicated by F1, F2, and F3, respectively. Furthermore, in this embodiment, the light source module 41 utilizes a COB (Chips on Board) package to increase the UV irradiation energy and, therefore, improve curing efficiency.

[0050] Furthermore, the input structure 2 includes a plurality of input fins 21, which are disposed in the input cavity 11b and spaced apart along the thickness direction of the partition 12 to form input channels 2a between adjacent input fins 21. Each input fin 21 extends along the length direction of the partition 12, and its end adjacent to the guide gap 11d is spaced apart from the side wall of the inner cavity 11a, and the distance between the end and the side wall of the inner cavity 11a decreases gradually as it approaches the output cavity 11c, so that each input channel 2a is connected to the guide gap 11d. In this embodiment, the input channel 2a is formed by the input fins 21 and the inner wall of the inner cavity 11a, so that the cooling medium in the input channel 2a can directly contact the wall surface of the inner cavity 11a, thereby shortening the distance between the cooling medium in the input channel 2a and the light source module 41, thereby improving the cooling effect. The structure is simple and cost-effective.

[0051] Similarly, the output structure 3 includes a plurality of output fins 31, which are disposed in the output cavity 11c and spaced apart along the thickness direction of the partition 12, so that output channels 3a are formed between adjacent output fins 31. Each output fin 31 extends along the length of the partition 12, and its end near the guide gap 11d is spaced apart from the side wall of the inner cavity 11a. The distance between the end and the side wall of the inner cavity 11a decreases gradually as it moves away from the output cavity 11c, so that each output channel 3a is connected to the guide gap 11d. This allows the cooling medium in the output channel 3a to directly contact the wall of the inner cavity 11a, thereby shortening the distance between the cooling medium in the output channel 3a and the light source module 41, thereby improving the cooling effect.

[0052] Furthermore, the ends of each input fin 21 away from the guide gap 11d are spaced from the sidewall corresponding to the inner cavity 11a, so that the ends of the multiple input flow channels 2a away from the guide gap 11d are interconnected for inputting the cooling medium. The ends of each output fin 31 away from the guide gap 11d are spaced from the sidewall corresponding to the inner cavity 11a, so that the ends of the multiple output flow channels 3a away from the guide gap 11d are interconnected for outputting the cooling medium. In this embodiment, the ends of the input flow channels 2a away from the guide gap 11d are interconnected to facilitate input of the cooling medium; correspondingly, the ends of the output flow channels 3a away from the guide gap 11d are interconnected to facilitate output of the cooling medium, thereby increasing the flow rate of the cooling medium and making the overall structure more compact.

[0053] Furthermore, the partition 12 is spaced apart from the side wall of the inner cavity 11a at one end along its length to form a guide gap 11d, and the distance between the end of the partition 12 near the guide gap 11d and the side wall of the inner cavity 11a is a; the input fin 21 near the output cavity 11c is the main input fin 22, and the distance between the end of the main input fin 22 near the guide gap 11d and the side wall of the inner cavity 11a is b; the output fin 31 near the input cavity 11b is the main output fin 32, and the distance between the end of the main output fin 32 near the guide gap 11d and the side wall of the inner cavity 11a is c, satisfying b<c<a. In this embodiment, the distances between the ends of the partition 12, the main input fin 22, and the main output fin 32 near the guide gap 11d and the side wall of the inner cavity 11a are set as described above to further increase the flow rate of the cooling medium in the input flow channel 2a and the output flow channel 3a near the partition 12, thereby improving the cooling efficiency.

[0054] Furthermore, housing 1 includes a baffle 13 connected to the sidewall of inner cavity 11a, located in guide gap 11d, and spaced apart from partition 12 along its length. In this embodiment, baffle 13 can guide the cooling medium flowing from guide gap 11d to output cavity 11c to output flow channel 3a near partition 12, further increasing the flow rate of the cooling medium in output flow channel 3a.

[0055] Specifically, the main input fins 22 and the partition 12 are spaced apart along their thickness direction, so as to be separated by the input flow channel 2a; the main output fins 32 and the partition 12 are spaced apart along their thickness direction, so as to be separated by the output flow channel 3a. In this way, the cooling medium in the input flow channel 2a formed between the main input fins 22 and the partition 12, and the output flow channel 3a formed between the main output fins 32 and the partition 12 have the fastest flow rate, thereby ensuring that the outer wall surface of the heat dissipation housing 11 corresponding to the position of the input flow channel 2a between the partition 12 and the main input fins 22, and the position of the output flow channel 3a between the partition 12 and the main output fins 32 have the best cooling effect, so as to remove heat from the central part of the light source module 41 and improve the heat dissipation effect.

[0056] Specifically, in this embodiment, three input fins 21 and three output fins 31 are provided, and correspondingly, four input flow channels 2a and four output flow channels 3a are formed. For ease of explanation, each input flow channel 2a is defined as the first input flow channel 2a1, the second input flow channel 2a2, the third input flow channel 2a3, and the fourth input flow channel 2a4 in the direction close to the output cavity 11c. Correspondingly, each output flow channel 3a is positioned as the first output flow channel 3a1, the second output flow channel 3a2, the third output flow channel 3a3, and the fourth output flow channel 3a4 in the direction away from the input cavity 11b. Based on the above structure, please refer to Figure 11 The figure shows a schematic diagram of the flow rate and flow direction of the cooling medium in each flow channel. The shaded area in the figure indicates that the flow rate of the cooling medium is faster, and the blank area indicates that the flow rate is relatively slow. It can be seen that the flow rate of the cooling medium in the fourth input flow channel 2a4, the first output flow channel 3a1 and the second output flow channel 3a2 is faster than the flow rate of the cooling medium in other flow channels.

[0057] Furthermore, the housing 1 also includes an outer shell 14, which has an installation cavity 14a with an opening on one side; the heat dissipation shell 11 is arranged in the installation cavity 14a and is provided with an opening connected to the inner cavity 11a, and the side with the opening covers the bottom wall of the installation cavity 14a to form the inner cavity 11a together with the bottom wall of the installation cavity 14a, wherein the opening of the heat dissipation shell 11 is located on one side thereof in the height direction of the partition 12; the light source module 41 is located in the installation cavity 14a and is attached to the outer wall surface of the heat dissipation shell 11 near the opening of the installation cavity 14a. In this embodiment, the light source module 41 is arranged in the installation cavity 14a and is located on the side of the heat dissipation shell 11 near the opening of the installation cavity 14a, so as to ensure the illumination function of the light source module 41 while providing a certain protection to the light source module 41 through the outer shell 14, thereby reducing the probability of the light source module 41 being damaged by foreign objects. In addition, in this solution, the heat dissipation shell 11 and the bottom wall of the installation cavity 14a are jointly enclosed to form an inner cavity 11a to simplify the structure, making the overall structure of the device more compact and the appearance smaller, thereby making the ultraviolet curing device 100 have the advantages of high energy, small size and good heat dissipation.

[0058] Furthermore, a sealing ring 15 is provided between the open side of the heat dissipation shell 11 and the bottom wall of the installation cavity 14a to ensure the sealing of the inner cavity 11a. Specifically, a sealing groove 14d is recessed in the bottom wall of the installation groove, and the sealing ring 15 is arranged in the sealing groove 14d. The heat dissipation shell 11 is correspondingly installed on the bottom wall of the installation cavity 14a. In addition, the bottom wall of the installation cavity 14a is provided with an input port 14b and an output port 14c connected to the outside world. The input port 14b is connected to one end of multiple input channels 2a away from the guide gap 11d, and correspondingly, the output port 14c is connected to one end of multiple output channels 3a away from the guide gap 11d. In this way, the cooling medium is input into each input channel 2a from the input port 14b, and the cooling medium is output from the output port 14c after passing through the output channel 3a. It should be noted that, in the example shown in the drawings, the end of the input channel 2a corresponding to the input port 14b is shown as the input position 2b, and the end of the output channel 3a corresponding to the output port 14c is shown as the output position 3b.

[0059] Furthermore, the housing 1 includes a cover 16, which is disposed on a side of the light source module 41 away from the heat dissipation housing 11 and located at the opening of the mounting cavity 14a. A light-transmitting area is provided corresponding to the light source module 41. In this embodiment, the cover 16 is disposed over the opening of the mounting cavity 14a to further protect the light source module 41. Specifically, in this embodiment, a transparent glass 17 is provided in the area of ​​the cover 16 corresponding to the light source module 41 to form a light-transmitting area.

[0060] Furthermore, the light source module 41 includes a substrate 411 and a plurality of ultraviolet chips 412. The substrate 411 is attached to the outer wall surface of the heat dissipation shell 11 in the thickness direction of the partition 12 and is directly opposite the partition 12. The plurality of ultraviolet chips 412 are arranged on the side of the substrate 411 away from the heat dissipation shell 11 and are spaced apart along the thickness and length of the partition 12. Specifically, the light source module 41 is provided with multiple groups, and the multiple groups of light source modules 41 are arranged in sequence along the length direction of the partition 12 to increase the ultraviolet irradiation energy and thereby improve the curing efficiency. In addition, the light source module 41 also includes a plurality of lenses 413. The multiple lenses 413 are arranged in sequence along the thickness direction of the partition 12, and each lens 413 extends along the length direction of the partition 12 to be arranged on the side of the plurality of ultraviolet chips 412 arranged in sequence along the length direction of the partition 12 away from the substrate 411. In this way, the ultraviolet light from the multiple ultraviolet chips 412 in the same row can be concentrated to achieve high-energy ultraviolet irradiation.

[0061] It should be noted that, based on the above embodiment, an electrical connector 5 and two pagoda connectors 6 are further provided on the side of the housing 14 away from the opening. The electrical connector 5 is electrically connected to the substrate 411 of the light source module 41. One of the two pagoda structures communicates with the input port 14b, and the other communicates with the output port 14c, for inputting and outputting cooling medium into and out of the inner cavity 11a. Furthermore, it should be noted that, in this embodiment, the various components of the housing 1 are connected by screw connections for ease of assembly.

[0062] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A UV curing device, characterized in that: It includes: The housing comprises a heat dissipation shell and a partition, wherein the partition is provided in an inner cavity of the heat dissipation shell to separate the inner cavity into an input cavity and an output cavity, and the partition is provided at one end in a longitudinal direction thereof at an inner wall of the inner cavity to form a flow guide gap connecting the input cavity and the output cavity; An input structure is provided in the input cavity and is provided with a plurality of input flow channels. The plurality of input flow channels are sequentially arranged along the thickness direction of the partition plate, and one end of each input flow channel is connected to the guide gap, and the distance between the input flow channel and the side wall of the inner cavity near the guide gap decreases sequentially along the direction approaching the output cavity, and the other end is used to communicate with the outside to input the cooling medium; an output structure provided in the output cavity, which is provided with a plurality of output flow channels, wherein the plurality of output flow channels are sequentially arranged along the thickness direction of the partition plate, and one end of each output flow channel is connected to the guide gap, and the distance between the output flow channel and the side wall of the inner cavity close to the guide gap decreases sequentially in the direction away from the input cavity, and the other end is used to communicate with the outside to output the cooling medium; as well as, The light source structure includes a light source module, which is attached to the outer wall surface of the heat dissipation shell in the height direction of the partition and faces the partition to generate ultraviolet rays.

2. The ultraviolet curing device according to claim 1, characterized in that The input structure includes a plurality of input fins, the plurality of input fins being provided in the input cavity and spaced apart along the thickness direction of the partition plate so as to form the input flow channel between adjacent input fins, each of the input fins extending along the length direction of the partition plate, and having one end thereof close to the guide gap spaced apart from the side wall of the inner cavity, and the distance between the end and the side wall of the inner cavity decreasing successively along the direction approaching the output cavity, so that each of the input flow channels is connected to the guide gap; and / or, The output structure includes a plurality of output fins, which are arranged in the output cavity and spaced apart along the thickness direction of the partition plate to form the output flow channel between adjacent output fins. Each of the output fins extends along the length direction of the partition plate, and one end of the output fin close to the guide gap is spaced apart from the side wall of the inner cavity, and the distance between the end and the side wall of the inner cavity decreases successively in the direction away from the output cavity, so that each of the output flow channels is connected to the guide gap.

3. The ultraviolet curing device according to claim 2, characterized in that One end of each input fin away from the guide gap is spaced apart from the side wall corresponding to the inner cavity, so that the ends of the plurality of input flow channels away from the guide gap are connected to each other for inputting cooling medium; One end of each output fin away from the guide gap is spaced apart from the side wall corresponding to the inner cavity, so that the ends of the plurality of output flow channels away from the guide gap are connected to each other for outputting the cooling medium.

4. The ultraviolet curing device according to claim 2, characterized in that One end of the partition in the longitudinal direction is spaced from the side wall of the inner cavity to form the guide gap, and the distance between the end of the partition close to the guide gap and the side wall of the inner cavity is a; The input fin close to the output cavity is a main input fin, and the distance between one end of the main input fin adjacent to the guide gap and the side wall of the inner cavity is b; The output fin close to the input cavity is a main output fin. The distance between one end of the main output fin adjacent to the guide gap and the side wall of the inner cavity is c, satisfying b<c<a.

5. The ultraviolet curing device according to claim 4, characterized in that: The shell further includes a baffle, which is connected to the side wall of the inner cavity, located in the flow guide gap, and spaced apart from the partition along the length direction thereof.

6. The ultraviolet curing device according to claim 5, characterized in that: The main input fin and the partition are spaced apart in the thickness direction thereof so as to separate the input flow channel together; The main output fin and the partition are spaced apart in a thickness direction thereof so as to form the output flow channel therebetween.

7. The ultraviolet curing device according to claim 1, characterized in that The housing further comprises an outer shell having an installation cavity with an opening on one side; The heat dissipation shell is provided in the installation cavity and is provided with an opening communicating with the inner cavity, and the side provided with the opening is covered with the bottom wall of the installation cavity to enclose the inner cavity together with the bottom wall of the installation cavity, wherein the opening of the heat dissipation shell is located on one side thereof in the height direction of the partition; The light source module is located in the installation cavity and attached to the outer wall surface of the heat dissipation shell close to the opening of the installation cavity.

8. The ultraviolet curing device according to claim 7, characterized in that: A sealing ring is provided between the opening side of the heat dissipation shell and the bottom wall of the installation cavity; and / or, The bottom wall of the mounting cavity is provided with an input port and an output port communicating with the outside world, the input port communicating with one end of the plurality of input flow channels away from the flow guide gap, and correspondingly, the output port communicating with one end of the plurality of output flow channels away from the flow guide gap; and / or, The housing further includes a cover, which is arranged on a side of the light source module away from the heat dissipation shell and located at the opening of the installation cavity, and is provided with a light-transmitting area corresponding to the light source module.

9. The ultraviolet curing device according to claim 1, characterized in that: The light source module includes a substrate and a plurality of ultraviolet chips. The substrate is attached to the outer wall surface of the heat dissipation shell in the thickness direction of the partition and is opposite to the partition. The plurality of ultraviolet chips are arranged on the side of the substrate away from the heat dissipation shell and are spaced apart along the thickness and length directions of the partition.

10. The ultraviolet curing device according to claim 9, characterized in that: The light source modules are provided in multiple groups, and the multiple groups of light source modules are arranged in sequence along the length direction of the partition; and / or, The light source module further includes a plurality of lenses, which are sequentially arranged along the thickness direction of the partition, and each lens extends along the length direction of the partition so as to be arranged on a side of the plurality of ultraviolet chips sequentially arranged along the length direction of the partition away from the substrate.

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