Liquid resin material UV curing device

Abstract

The utility model discloses a liquid resin material UV (ultraviolet) curing device which is provided with a UV light source, the UV light source is fixed at the top in a hollow shell, the bottom of the shell is open and is suspended above a conveying belt, and a gap between the bottom edge of the shell and the conveying belt is slightly larger than the thickness of a product to be cured. The UV curing only needs several seconds to several minutes, the production cycle is greatly shortened, the efficiency is improved, the energy consumption of the UV curing is low, a small amount of volatile organic compounds are not contained, the environmental pollution is reduced, and the curing process can be accurately controlled and the defects are reduced by adjusting the intensity and the curing time of the UV light source.

Description

Technical Field

[0001] This utility model relates to the field of liquid resin material curing technology. Background Technology

[0002] Currently, traditional methods for curing liquid resin materials involve adding curing agents or catalysts to initiate a chemical reaction in the resin. For example, the patent publication CN103025508A, published on April 3, 2013, entitled "Modified Resin System for Liquid Resin Injection and Processing Method Thereof," discloses a modified resin system for liquid resin injection (LRI) processing, LRI processing variants, and other suitable processing. This modified resin system comprises a novel combination of at least one base resin, a suitable amount of particles within a predetermined range, and a suitable amount of thermoplastic material within a predetermined range. When combined, the modified resin system exhibits an average viscosity below a threshold average viscosity and a high level of toughness at a specific temperature. The modified resin system may also include a curing agent and other suitable components. This curing method is relatively slow, the added curing agent may be harmful, and the shelf life is limited. In contrast, UV curing utilizes ultraviolet (UV) radiation to initiate the polymerization reaction of the resin, resulting in fast curing, low energy consumption, and environmental friendliness. Therefore, it is widely used for curing resin materials and will continue to drive advancements in materials science and manufacturing technology in the future.

[0003] If light curing is used, it involves direct curing by irradiation with light. However, light penetration is limited, making it difficult to completely cure thick or dark materials, potentially resulting in uncured interiors that affect performance. Furthermore, oxygen in the air inhibits free radical polymerization, affecting surface curing. The heat generated by the UV light source may also cause substrate deformation. These technical issues need to be addressed. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to realize a UV curing device that can minimize external light interference, create a relatively sealed environment, and improve the curing effect.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a UV curing device for liquid resin materials, the device is equipped with a UV light source, the UV light source is fixed at the top inside a hollow shell, the bottom of the shell is open and suspended above a conveyor belt, and the gap between the bottom edge of the shell and the conveyor belt is slightly larger than the thickness of the product to be cured.

[0006] The UV light source consists of multiple UV lamps fixed side by side, and the arrangement direction of the UV lamps is consistent with the conveyor belt transmission direction.

[0007] The conveyor belt is equipped with sensors at the inlet and outlet of the outer shell to sense the passing of the product to be cured. The sensors are connected to and output sensing signals to the control system.

[0008] Each of the UV lamps is independently connected to a different power supply output port of the power supply via a wire, and the control system is connected to and outputs control signals to the power supply.

[0009] The control system is connected to and outputs drive signals to the drive unit of the conveyor belt.

[0010] The width of the outer casing is smaller than the width of the conveyor belt, and the edge of the outer casing is inside the conveyor belt.

[0011] The conveyor belt surface has a light-absorbing layer.

[0012] The outer casing is provided with an inert gas injection port, which is connected to an inert gas source with a density less than air and which is non-toxic through a pipe. The pipe passes through a cooling system to reduce the temperature of the internal inert gas.

[0013] The UV curing environment of this invention is relatively sealed, requiring only a few seconds to a few minutes, which greatly shortens the production cycle and improves efficiency. UV curing has low energy consumption and does not contain a small amount of volatile organic compounds, reducing environmental pollution. By adjusting the intensity of the UV light source and the curing time, the curing process can be precisely controlled, reducing defects. Attached Figure Description

[0014] The following is a brief explanation of the content and markings in each of the accompanying drawings in this utility model specification:

[0015] Figure 1 This is a schematic diagram of a UV curing device for liquid resin materials.

[0016] The markings in the above figures are: 1. UV light source; 2. Power supply; 3. Housing; 4. Conveyor belt; 5. Control system. Detailed Implementation

[0017] The following description, with reference to the accompanying drawings, details the specific implementation of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the function and working principle of each part, the manufacturing process, and the operation and use methods. This will help those skilled in the art to have a more complete, accurate, and in-depth understanding of the inventive concept and technical solution of this utility model.

[0018] The UV curing device for liquid resin materials mainly consists of a UV light source 1, a cooling system, a conveyor belt 4, a housing 3, a power supply 2, and a control system 5. For example... Figure 1As shown, in the liquid resin UV curing device, the conveyor belt 4 transports the product into the housing 3, where the UV light source 1 illuminates for curing. The housing 3 is a sealed space with only a bottom opening, typically a rectangular shell, suspended horizontally (rigidly connected) above the conveyor belt 4. The UV light source 1 is fixed to the top inside the hollow housing 3. The housing 3 is opaque, and the gap between the bottom edge of the housing 3 and the conveyor belt 4 is slightly larger than the thickness of the product to be cured. This allows the conveyor belt 4 to transport the product to be cured at a set speed to the area below the UV light source 1 for curing before conveying it out. The width of the housing 3 is smaller than the width of the conveyor belt 4, and the edge of the housing 3 is within the conveyor belt 4. This reduces UV light leakage. Furthermore, the surface of the conveyor belt 4 has a light-absorbing layer to reduce UV light reflection and leakage, thus minimizing the impact on surrounding workers. Removable light-blocking plates can also be added to both sides of the area where the housing 3 is located on the conveyor belt 4. These plates are installed during normal operation and can be removed for maintenance.

[0019] The side panel of the outer casing 3 is a removable plate, which makes it convenient to replace the lamp tube in time according to its service life to avoid efficiency reduction. The protection of the outer casing 3 can also keep the surface of the lamp tube clean and prevent dust from affecting the curing effect. After the side panel is removed, regular maintenance and cleaning can also be performed.

[0020] Additionally, the top of the outer casing 3 is equipped with a lightweight (density less than air) inert gas supply pipe. A cheap, non-toxic inert gas must be selected. After the outer casing 3 is filled with inert gas, a small, continuous flow of this gas ensures that UV curing occurs in an environment with extremely low oxygen content. The gas supply pipe passes through a cooling system to lower the gas temperature before it is introduced into the outer casing 3. This effectively isolates oxygen and lowers the curing environment temperature. Since UV light has limited penetration, thick or dark materials may not fully cure, potentially leading to uncured interiors. By controlling the oxygen content and temperature in the curing environment, the free radical polymerization rate is reduced, surface curing is improved, and substrate deformation caused by heat generated by the UV light source 1 is reduced, thus enhancing the curing effect and efficiency.

[0021] The UV light source 1 consists of multiple UV lamps fixed side-by-side, with the lamps arranged in the same direction as the conveyor belt 4. Each UV lamp's power input is independently connected to a different power output port of the power supply 2 via a wire. The control system 5 connects to and outputs control signals to the power supply 2. This allows for independent control of each UV lamp as needed. The conveyor belt 4 has sensors at the inlet and outlet of the outer casing 3 to detect the passing of the product to be cured. These sensors connect to and output sensing signals to the control system 5, which in turn connects to and outputs drive signals to the drive unit of the conveyor belt 4. With this hardware configuration, after the product is conveyed into the outer casing 3, the UV light source 1 illuminates and moves at the same speed as the conveyor belt 4. The light source intensity and curing time can be adjusted by turning the buttons on the control system 5, allowing for precise control of the curing process.

[0022] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A UV curing device for liquid resin materials, the device being equipped with a UV light source, characterized in that, The UV light source is fixed at the top inside the hollow housing. The bottom of the housing is open and suspended above the conveyor belt. The gap between the bottom edge of the housing and the conveyor belt is slightly larger than the thickness of the product to be cured.

2. The UV curing apparatus for liquid resin materials according to claim 1, characterized in that: The UV light source consists of multiple UV lamps fixed side by side, and the arrangement direction of the UV lamps is consistent with the conveyor belt transmission direction.

3. The UV curing apparatus for liquid resin materials according to claim 2, characterized in that: The conveyor belt is equipped with sensors at the inlet and outlet of the outer shell to sense the passing of the product to be cured. The sensors are connected to and output sensing signals to the control system.

4. The UV curing apparatus for liquid resin materials according to claim 3, characterized in that: Each of the UV lamps is independently connected to a different power supply output port of the power supply via a wire, and the control system is connected to and outputs control signals to the power supply.

5. The UV curing apparatus for liquid resin materials according to claim 4, characterized in that: The control system is connected to and outputs drive signals to the drive unit of the conveyor belt.

6. The UV curing apparatus for liquid resin materials according to any one of claims 1-5, characterized in that: The width of the outer casing is smaller than the width of the conveyor belt, and the edge of the outer casing is inside the conveyor belt.

7. The UV curing apparatus for liquid resin materials according to claim 6, characterized in that: The conveyor belt surface has a light-absorbing layer.

8. The UV curing apparatus for liquid resin materials according to claim 1 or 7, characterized in that: The outer casing is provided with an inert gas injection port, which is connected to an inert gas source with a density less than air and which is non-toxic through a pipe. The pipe passes through a cooling system to reduce the temperature of the internal inert gas.

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