An ultraviolet light curing device

Abstract

The utility model discloses a kind of ultraviolet light curing devices, including shell, curing chamber is equipped in the shell, and curing chamber bottom is equipped with the load plate of load and drive workpiece to rotate uniform light, and load plate electrically connected with the driving motor installed in shell, curing chamber is installed with partition cover, and partition cover is sleeved in load plate outside.This ultraviolet light curing device, first, the rotation design of device through load plate, workpiece can be received ultraviolet light in curing process all-round evenly, ensure the consistency of curing quality, avoid the curing defect caused by uneven illumination, to improve curing efficiency and product quality;In addition, the optimization layout of UV light mechanism and the setting of reflector, further improve the illumination intensity and uniformity, shorten curing time, improve production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of ultraviolet curing equipment technology, specifically to an ultraviolet curing device. Background Technology

[0002] With the rapid development of modern industry, ultraviolet (UV) curing technology has been widely used in various fields such as electronics manufacturing, automotive parts production, medical equipment manufacturing, and printing due to its advantages of high efficiency, energy saving, and environmental friendliness. However, existing UV curing devices still have some problems and shortcomings in practical applications, which limit their further development and application.

[0003] Existing UV curing equipment typically uses a fixed light source to irradiate the workpiece. Differences in workpiece shape, size, and placement can easily lead to uneven illumination, affecting the consistency of curing results. This uneven illumination can result in under- or over-curing in some areas, impacting product quality and performance. For example, in the packaging process of electronic components, uneven curing can reduce component adhesion, thus affecting its electrical performance and reliability. Furthermore, UV curing equipment generates significant heat during prolonged operation. Failure to dissipate heat promptly will reduce the lifespan of the UV curing equipment and affect the effectiveness of the UV light source. While increased temperature can accelerate photoinitiator decomposition and free radical generation, thus speeding up curing, excessively high temperatures can cause thermal decomposition or oxidation reactions in certain components of the material, reducing its mechanical, optical, and durability properties, ultimately affecting the overall performance of the cured material. Most existing UV curing equipment lacks precise temperature control capabilities and cannot dynamically adjust based on actual temperature changes during the curing process.

[0004] To address the aforementioned issues, there is an urgent need for innovative designs based on existing curing devices. Utility Model Content

[0005] This utility model addresses the problem that existing technical solutions are too simplistic by providing a UV curing device that is significantly different from existing technologies, thus solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an ultraviolet curing device, comprising a housing, a curing chamber inside the housing, and a support plate installed at the bottom of the curing chamber to support and drive the workpiece to rotate and uniformly irradiate it, and the support plate is electrically connected to a drive motor installed inside the housing, a partition cover is installed inside the curing chamber and is fitted outside the support plate, a UV light mechanism for generating ultraviolet light is installed on one side of the partition cover, and temperature control structures are provided on the other two symmetrical sides of the partition cover, an air-cooling structure is installed between the curing chamber and the partition cover, and a liquid-cooling structure is provided on the housing to improve the cooling effect of the UV light mechanism.

[0007] Preferably, the partition cover is viewed from above as a concave structure, and reflectors for refracting ultraviolet light generated by the UV light mechanism are provided on the symmetrical inner sides of the partition cover.

[0008] Preferably, the UV light mechanism includes a T-shaped substrate, a bulb assembly, and heat dissipation fins. The T-shaped substrate is mounted on the partition cover, and the end of the T-shaped substrate is connected to the inner wall of the curing chamber. The bulb assembly is mounted on one end face of the T-shaped substrate inside the partition cover, and heat dissipation fins are uniformly mounted on one end face of the T-shaped substrate outside the partition cover. A liquid cooling structure is connected between this end face of the T-shaped substrate and the housing.

[0009] Preferably, the temperature control structure includes a movable cavity, a movable plate, and a first memory alloy spring. A movable cavity is provided on each of the symmetrical sides of the partition cover, and a movable plate is slidably connected to each movable cavity. At least one first memory alloy spring is connected between the bottom sides of each movable plate and the bottom of the curing chamber.

[0010] Preferably, the air-cooled structure includes an air supply duct, an air outlet box, and an air collection duct. The air outlet box is installed at the bottom of the curing chamber in the area outside the partition cover, and the air outlet box is connected to the air supply duct. The air collection duct is provided at the top of the curing chamber in the area outside the partition cover, and the air supply duct and the air collection duct are connected to an air supply mechanism located inside the housing.

[0011] Preferably, the liquid cooling structure includes a semi-annular liquid tank, an inlet pipe, an outlet pipe, a cylinder, a trigger rod, a second shape memory alloy spring, and a limit switch. The T-shaped substrate has semi-annular liquid tanks arranged in a wave-like pattern at equal intervals for the flow of coolant. The upper and lower ends of the semi-annular liquid tanks are respectively connected to the inlet pipe and the outlet pipe, and the inlet pipe and the outlet pipe are connected to a liquid cooling device installed in the housing. The cylinder is connected to the T-shaped substrate, and the trigger rod is slidably connected inside the cylinder. The second shape memory alloy spring is connected between the cylinder and the trigger rod. The curing chamber is equipped with a limit switch for cooperating with the trigger rod, and the limit switch is electrically connected to the liquid cooling device for controlling start and stop.

[0012] Compared with the prior art, the beneficial effects of this utility model are: the ultraviolet curing device achieves efficient, uniform and stable curing effect, and at the same time has the characteristics of energy saving, environmental protection, automation and high adaptability;

[0013] First, the device's rotating design of the support plate ensures that the workpiece receives uniform UV light from all directions during the curing process, guaranteeing consistent curing quality and avoiding curing defects caused by uneven light exposure, thereby improving curing efficiency and product quality. In addition, the optimized layout of the UV light mechanism and the placement of the reflector further enhance the light intensity and uniformity, shorten curing time, and improve production efficiency.

[0014] Secondly, by combining air cooling and liquid cooling, the heat generated by the UV light mechanism during long-term operation is effectively solved. The curing chamber is divided into two parts by a partition cover. The air cooling structure removes heat through airflow, while the liquid cooling structure is activated when air cooling can no longer meet the heat dissipation of the UV light mechanism, further reducing the temperature and ensuring the stability of the curing process, but without affecting the ambient temperature of the workpiece under UV light curing inside the partition cover.

[0015] The temperature control structure utilizes a shape memory alloy spring and a movable plate design to automatically adjust the heat dissipation effect according to temperature changes. This adaptive adjustment mechanism not only protects the UV light mechanism but also avoids the degradation of workpiece material properties due to excessive temperature, ensuring that the cured material has excellent mechanical properties, optical properties, and durability. Attached Figure Description

[0016] Figure 1 This is a frontal cross-sectional view of the movable plate of this utility model near the bottom of the curing chamber.

[0017] Figure 2 This is a frontal cross-sectional view of the movable plate of this utility model away from the bottom of the curing chamber.

[0018] Figure 3 This is a top view cross-sectional structural diagram of the cylindrical body of this utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0020] Figure 5 This is a top view of the T-shaped substrate structure of this utility model;

[0021] Figure 6 This is a schematic diagram of the left side of the T-shaped substrate structure of this utility model;

[0022] Figure 7 This is a schematic diagram of the right-side cross-sectional structure of the T-shaped substrate of this utility model;

[0023] Figure 8 This is a schematic diagram of the right side of the T-shaped substrate structure of this utility model;

[0024] Figure 9 This is a front view structural diagram of the present invention;

[0025] Figure 10 This is a schematic diagram of the rear view structure of this utility model.

[0026] In the diagram: 1. Shell; 2. Curing chamber; 3. Support plate; 4. Separator cover; 5. UV light mechanism; 501. T-shaped substrate; 502. Bulb assembly; 503. Heat dissipation fins; 6. Temperature control structure; 601. Movable cavity; 602. Movable plate; 603. First shape memory alloy spring; 7. Air cooling structure; 701. Air supply duct; 702. Air outlet box; 703. Air collection duct; 8. Liquid cooling structure; 801. Semi-annular liquid tank; 802. Liquid inlet pipe; 803. Liquid outlet pipe; 804. Cylinder; 805. Trigger rod; 806. Second shape memory alloy spring; 807. Limit switch. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-10 This utility model provides a technical solution: an ultraviolet curing device, including a shell 1, a curing chamber 2, a support plate 3, a partition cover 4, a UV light mechanism 5, a T-shaped substrate 501, a bulb assembly 502, heat dissipation fins 503, a temperature control structure 6, a movable cavity 601, a movable plate 602, a first shape memory alloy spring 603, an air-cooling structure 7, an air supply duct 701, an air outlet box 702, an air collection duct 703, a liquid-cooling structure 8, a semi-annular liquid tank 801, an inlet pipe 802, an outlet pipe 803, a cylinder 804, a trigger rod 805, a second shape memory alloy spring 806, and a limit switch. 807, the housing 1 is provided with a curing chamber 2, and a support plate 3 is installed at the bottom of the curing chamber 2 to support and drive the workpiece to rotate and be uniformly irradiated. The support plate 3 is electrically connected to a drive motor installed in the housing 1. A partition cover 4 is installed in the curing chamber 2 and is fitted outside the support plate 3. A UV light mechanism 5 for generating ultraviolet light is installed on one side of the partition cover 4, and a temperature control structure 6 is provided on the other two symmetrical sides of the partition cover 4. An air cooling structure 7 is installed between the curing chamber 2 and the partition cover 4. A liquid cooling structure 8 is provided on the housing 1 to improve the cooling effect of the UV light mechanism 5.

[0029] The separator 4 is viewed from above as a concave structure, and reflectors for refracting the ultraviolet light generated by the UV light mechanism 5 are provided on the symmetrical inner sides of the separator 4.

[0030] The UV light mechanism 5 includes a T-shaped substrate 501, a bulb assembly 502, and heat dissipation fins 503. The T-shaped substrate 501 is mounted on the partition cover 4, and the end of the T-shaped substrate 501 is connected to the inner wall of the curing chamber 2. The bulb assembly 502 is mounted on one side of the T-shaped substrate 501 inside the partition cover 4, and heat dissipation fins 503 are evenly mounted on one side of the T-shaped substrate 501 outside the partition cover 4. A liquid cooling structure 8 is connected between this side of the T-shaped substrate 501 and the housing 1.

[0031] The temperature control structure 6 includes a movable cavity 601, a movable plate 602, and a first memory alloy spring 603. A movable cavity 601 is opened on each of the two symmetrical sides of the partition cover 4, and a movable plate 602 is engaged and slidably connected in each movable cavity 601. At least one first memory alloy spring 603 is connected between the bottom sides of each movable plate 602 and the bottom of the curing chamber 2.

[0032] The air-cooled structure 7 includes an air supply duct 701, an air outlet box 702, and an air collection duct 703. The air outlet box 702 is installed at the bottom of the curing chamber 2 in the area outside the partition cover 4, and the air outlet box 702 is connected to the air supply duct 701. The air collection duct 703 is provided at the top of the curing chamber 2 in the area outside the partition cover 4, and the air supply duct 701 and the air collection duct 703 are connected to the air supply mechanism provided in the housing 1.

[0033] The liquid cooling structure 8 includes a semi-annular liquid tank 801, an inlet pipe 802, an outlet pipe 803, a cylinder 804, a trigger rod 805, a second shape memory alloy spring 806, and a limit switch 807. The T-shaped base plate 501 has semi-annular liquid tanks 801 arranged in a wave-like pattern at equal intervals for the flow of coolant. The upper and lower ends of the semi-annular liquid tank 801 are respectively connected to the inlet pipe 802 and the outlet pipe 803. The inlet pipe 801 and the outlet pipe 803 are connected to a liquid cooling device installed in the housing 1. The cylinder 804 is connected to the T-shaped base plate 501. The trigger rod 805 is slidably connected inside the cylinder 804. The second shape memory alloy spring 806 is connected between the cylinder 804 and the trigger rod 805. The curing chamber 2 is equipped with a limit switch 807 for cooperating with the trigger rod 805. The limit switch 807 is electrically connected to the liquid cooling device for controlling start and stop.

[0034] Working principle: such as Figure 1As shown, the operation process is as follows: First, open the door on the housing 1, place the workpiece to be cured on the carrier plate 3, then close the door and start the UV light mechanism 5 to irradiate the workpiece with ultraviolet light. At the same time, the motor drives the T-shaped substrate 501 to rotate the workpiece, ensuring that the UV light mechanism 5 can irradiate the workpiece evenly from all directions.

[0035] The UV light mechanism 5 generates a large amount of heat during long-term operation. If heat is not dissipated in time, it will reduce the service life of the UV light mechanism 5 and affect the light source effect of the ultraviolet light. On the other hand, although the increase in temperature can accelerate the decomposition of photoinitiator and the generation of free radicals, thereby speeding up the curing speed, excessively high temperature will cause some components in the material to undergo thermal decomposition or oxidation reaction, thereby reducing the mechanical properties, optical properties and durability of the material, and ultimately affecting the overall performance of the cured material.

[0036] When the UV light mechanism 5 is working, the heat it generates is transferred to the heat dissipation fins 503 through the T-shaped substrate 501. At this time, the air-cooling structure 7 is activated, delivering cool outside air through the air supply duct 701 to the air outlet box 702, and then introducing it into the curing chamber 2, promoting airflow within the curing chamber 2. The flowing air absorbs the heat from the heat dissipation fins 503 and is then discharged to the outside through the air collection duct 703. During this process, although the partition cover 4 provides some obstruction to the workpiece on the support plate 3, the upward-flowing air in the air outlet box 702, under the negative pressure adsorption, will also cause some of the hot air flowing to the bottom of the support plate 3 within the partition cover 4 to flow upwards and be discharged to the outside through the air collection duct 703. In this way, not only is effective heat dissipation achieved for the UV light mechanism 5, but also the continuous negative pressure adsorption extracts the high-temperature air from the partition cover 4, balancing the heat generated by the UV light mechanism 5 with the heat lost. This keeps the ambient temperature of the workpiece within the partition cover 4 at a relatively stable high temperature during the curing process, which is beneficial for the curing of the workpiece.

[0037] However, as the temperature inside the partition hood 4 gradually rises due to the continuous accumulation of heat, it becomes less conducive to workpiece curing. Under negative pressure adsorption, the overheated air inside the partition hood 4 passes through the gap between the movable plate 602 and the bottom of the curing chamber 2. When this hot air passes through the first shape memory alloy spring 603, it transfers its heat to the spring. When the temperature reaches the deformation temperature of the first shape memory alloy spring 603, the spring deforms. Depending on the degree of temperature increase, the extent to which the movable plate 602 is pushed into the movable cavity 601 varies. The higher the temperature, the more significant the deformation of the first shape memory alloy spring 603, and the greater the depth to which the movable plate 602 enters the movable cavity 601, thus increasing the distance between the movable plate 602 and the bottom of the curing chamber 2. This strengthens the negative pressure adsorption effect of the upward-flowing air in the air outlet box 702 on the overheated air inside the partition hood 4, causing more hot air to be expelled, thereby lowering the temperature inside the partition hood 4. When the temperature drops to a suitable range for workpiece curing, the temperature of the hot air passing through the movable plate 602 and the bottom of the curing chamber 2 inside the partition cover 4 decreases, making it impossible for the first memory alloy spring 603 to reach the deformation temperature. The spring then resets, causing the movable plate 602 to move out of the movable cavity 601, shortening the distance between the movable plate 602 and the bottom of the curing chamber 2, preventing the hot air inside the partition cover 4 from continuing to leak and cool down, so as to maintain a suitable temperature environment for workpiece curing.

[0038] If the UV light mechanism 5 continues to operate, the heat dissipation effect of the air entering the curing chamber 2 through the heat dissipation fins 503 on the UV light mechanism 5 gradually decreases. When it is unable to effectively dissipate the heat generated during operation, the temperature that continuously accumulates on the T-shaped substrate 501 will be transferred to the cylinder 804 and act on the second shape memory alloy spring 806. When the temperature reaches the deformation temperature of the second shape memory alloy spring 806, the spring pushes the trigger rod 805 out of the cylinder 804, squeezing the trigger limit switch 807. The limit switch 807 transmits a signal to the liquid cooling device, activating it. Coolant is transported through the inlet pipe 802 to the semi-annular liquid tank 801 in the T-shaped substrate 501, absorbs heat, and then flows back to the liquid cooling device through the outlet pipe 803. This cycle is repeated to achieve the effect of automatic cooling by liquid cooling when the UV light mechanism 5 overheats. The above is the working principle of this ultraviolet curing device.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A UV curing device, comprising a housing (1), characterized in that: The housing (1) is provided with a curing chamber (2), and a support plate (3) is installed at the bottom of the curing chamber (2) to support and drive the workpiece to rotate and be uniformly irradiated. The support plate (3) is electrically connected to a drive motor installed in the housing (1). A partition cover (4) is installed in the curing chamber (2), and the partition cover (4) is fitted outside the support plate (3). A UV light mechanism (5) for generating ultraviolet light is installed on one side of the partition cover (4), and a temperature control structure (6) is provided on the other two symmetrical sides of the partition cover (4). A wind-cooling structure (7) is installed between the curing chamber (2) and the partition cover (4). A liquid-cooling structure (8) for improving the cooling effect of the UV light mechanism (5) is provided on the housing (1).

2. The ultraviolet curing device according to claim 1, characterized in that: The partition cover (4) is a concave structure when viewed from above, and reflectors for refracting the ultraviolet light generated by the UV light mechanism (5) are provided on the symmetrical sides inside the partition cover (4).

3. The ultraviolet curing device according to claim 1, characterized in that: The UV light mechanism (5) includes a T-shaped substrate (501), a bulb assembly (502), and heat dissipation fins (503). The T-shaped substrate (501) is mounted on the partition cover (4), and the end of the T-shaped substrate (501) is connected to the inner wall of the curing chamber (2). The bulb assembly (502) is mounted on one side of the T-shaped substrate (501) inside the partition cover (4), and heat dissipation fins (503) are uniformly mounted on one side of the T-shaped substrate (501) outside the partition cover (4). A liquid cooling structure (8) is connected between the side of the T-shaped substrate (501) and the housing (1).

4. The ultraviolet curing device according to claim 1, characterized in that: The temperature control structure (6) includes a movable cavity (601), a movable plate (602), and a first memory alloy spring (603). The partition cover (4) has a movable cavity (601) on each of its symmetrical sides, and a movable plate (602) is engaged and slidably connected in each movable cavity (601). At least one first memory alloy spring (603) is connected between the bottom sides of each movable plate (602) and the bottom of the curing chamber (2).

5. The ultraviolet curing device according to claim 1, characterized in that: The air-cooled structure (7) includes an air supply duct (701), an air outlet box (702), and an air collection duct (703). The bottom of the curing chamber (2) is equipped with an air outlet box (702) located outside the partition cover (4), and the air outlet box (702) is connected to the air supply duct (701). The top of the curing chamber (2) is equipped with an air collection duct (703) located outside the partition cover (4), and the air supply duct (701) and the air collection duct (703) are connected to an air supply mechanism located inside the housing (1).

6. The ultraviolet curing device according to claim 3, characterized in that: The liquid cooling structure (8) includes a semi-annular liquid tank (801), an inlet pipe (802), an outlet pipe (803), a cylinder (804), a trigger rod (805), a second memory alloy spring (806), and a limit switch (807). The T-shaped base plate (501) has semi-annular liquid tanks (801) arranged in a wave pattern at equal intervals for the flow of coolant. The upper and lower ends of the semi-annular liquid tank (801) are respectively connected to the inlet pipe (802) and the outlet pipe (803). (803) A liquid cooling device installed in the housing (1) is connected. A cylinder (804) is connected to the T-shaped base plate (501), and a trigger rod (805) is slidably connected inside the cylinder (804). A second memory alloy spring (806) is connected between the cylinder (804) and the trigger rod (805). A limit switch (807) is installed in the curing chamber (2) to cooperate with the trigger rod (805). The limit switch (807) is electrically connected to the liquid cooling device to control the start and stop.

Images