A sun protection clothing coating spraying machine

Abstract

This utility model relates to the field of spraying machine technology, specifically to a sun-protective clothing coating spraying machine, comprising: a spraying unit for spraying coating onto fabric, and a heating component disposed at the inlet and outlet of the spraying unit for heating the fabric before and after spraying; the heating component comprises: a heating roller rotatably disposed on a base fixed to the spraying unit for heating the fabric, and a heating section disposed inside the heating roller for supplying heat to the heating roller; the beneficial effects of this utility model are: by setting the heating component at the inlet and outlet of the spraying unit, the fabric before spraying is preheated and the curing process of the coating after spraying is accelerated, significantly shortening the liquid residence time of the coating on the fabric, thereby effectively inhibiting excessive penetration of the coating to the back of the fabric, and having the advantages of maintaining the breathability and moisture permeability of the fabric, ensuring the integrity of the front coating and UV protection performance.

Description

Technical Field

[0001] This utility model relates to the field of spraying machine technology, specifically to a sun protection clothing coating spraying machine. Background Technology

[0002] As a core component of outdoor protective gear, the functionality of sun-protective clothing highly depends on the integrity and uniformity of the coating on the fabric surface. This coating typically consists of UV absorbers or reflectors, applied to the fabric via a spraying process to achieve effective UV protection. Spraying is widely used in sun-protective clothing manufacturing due to its strong process adaptability and uniform coating distribution. However, in the actual operation of existing coating spraying equipment, the problem of excessive paint penetration to the back of the fabric has long existed. This not only seriously impairs the practical performance of the clothing but also directly weakens its protective value. Specifically, when paint penetrates to the back of the fabric, it fills the natural pores between fibers, causing the fabric to harden overall, significantly reducing breathability and moisture permeability. This results in a stuffy and uncomfortable feeling for the wearer in high-temperature environments, greatly affecting the daily wearing experience. Simultaneously, given a fixed total amount of paint, back penetration results in insufficient effective coating thickness on the front, failing to form a continuous and dense protective layer, thus reducing the UV protection factor (UPF) and making it difficult for sun-protective clothing to meet industry standards.

[0003] A deeper investigation into the causes of this problem reveals three interconnected technical bottlenecks: First, the physical impact during the spraying process. When the spray nozzle's working pressure is too high, the high-speed atomized paint particles carry significant kinetic energy, easily breaking through the physical barrier of the fabric's surface fibers and penetrating directly to the fabric's underside. Second, the material properties of the fabric itself. Certain natural fibers, such as cotton or regenerated cellulose fibers (viscose), and loosely structured fabrics possess strong hydrophilicity and capillary action, actively absorbing and guiding the liquid paint towards the back side like a sponge. Third, and most critically, is the timeliness of paint curing. In traditional processes, the sprayed fabric must be transported to an independent oven for curing. During this transfer and waiting period, the paint remains in a liquid state for an extended period, providing ample "time window" for penetration. The longer the liquid residence time of the paint, the more significant its diffusion towards the back side of the fabric. To address the first two factors, existing technologies often adjust by reducing nozzle pressure or decreasing the amount of paint sprayed. However, these measures present inherent contradictions: reduced pressure leads to poor atomization, resulting in uneven coating distribution; reduced paint usage directly causes insufficient frontal coverage, failing to meet basic sun protection requirements. Therefore, current technologies lack a mechanism to fundamentally inhibit excessive paint penetration. A key need is to address how to accelerate paint curing in the initial stages of spraying, thereby effectively shortening its liquid residence time on the fabric and preventing penetration.

[0004] Therefore, a sun protection clothing coating spraying machine is needed to overcome the above problems. Utility Model Content

[0005] To address the aforementioned problems, this utility model provides a sun-protective clothing coating spraying machine, which achieves the goal of solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model embodiment adopts the following technical solution: a sun-protective clothing coating spraying machine, comprising: a spraying section for spraying coating onto fabric, and a heating component disposed at the inlet and outlet of the spraying section for heating the fabric before and after spraying; the heating component comprises: a heating roller rotatably disposed on a base fixed to the spraying section for heating the fabric, and a heating unit disposed inside the heating roller for supplying heat to the heating roller.

[0007] As a further improvement to the above technical solution: The heating element includes: a channel arranged in a spiral shape inside the heating roller, and a pipe arranged inside the base and communicating with the channel.

[0008] The spraying unit includes: a housing providing a working space for spraying paint, a paint tank for containing paint, and a nozzle disposed inside the housing for spraying the paint from the paint tank onto the fabric.

[0009] The spraying section is equipped with a negative pressure section to prevent suspended matter from overflowing.

[0010] The negative pressure unit includes: a negative pressure chamber 1, which is located at the inlet and outlet, and a negative pressure pipe 1, which is connected to the negative pressure chamber 1 and externally connected to a negative pressure source.

[0011] The negative pressure section further includes: a second negative pressure chamber, which is located inside the spraying section and below the spraying position of the nozzle, and a second negative pressure pipe, which is connected to the second negative pressure chamber and externally connected to a negative pressure source.

[0012] The beneficial effects of this utility model embodiment are as follows: This application preheats the fabric before spraying by setting heating components at the inlet and outlet of the spraying section, and accelerates the curing process of the coating after spraying. This significantly shortens the liquid residence time of the coating on the fabric, thereby effectively inhibiting the excessive penetration of the coating to the back of the fabric. It has the advantages of maintaining the breathability and moisture permeability of the fabric, ensuring the integrity of the front coating and the performance of ultraviolet protection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2This is a cross-sectional view of the present invention from a first perspective; Figure 3 This is a cross-sectional view of the present invention from a second perspective; Figure 4 This is a cross-sectional view of the present invention from a third perspective.

[0014] In the diagram: 1. Spraying section; 2. Heating assembly; 21. Heating roller; 22. Base; 23. Heating section; 231. Channel; 232. Pipe; 11. Outer shell; 12. Paint tank; 13. Spray nozzle; 3. Negative pressure section; 41. Negative pressure chamber one; 42. Negative pressure pipe one; 43. Negative pressure chamber two; 44. Negative pressure pipe two. Detailed Implementation

[0015] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0016] See Figures 1 to 4 This utility model discloses a sun protection clothing coating spraying machine, including: a spraying unit 1 for spraying coating on fabric, and a heating component 2, which is disposed at the inlet and outlet of the spraying unit 1 for heating the fabric before and after spraying; the heating component 2 includes: a heating roller 21, which is rotatably disposed on a base 22 fixed to the spraying unit 1 for heating the fabric, and a heating part 23, which is disposed inside the heating roller 21 for supplying heat to the heating roller 21.

[0017] The spraying unit 1 can be understood as a device for uniformly applying paint to the surface of the fabric. This can be achieved in various ways, such as using a nozzle array, a rotary atomizer, or an ultrasonic atomizer. Its main purpose is to achieve a uniform distribution of paint on the fabric surface. The heating component 2 regulates the temperature of the fabric. Furthermore, the heating unit 23 can employ resistance wire heating, infrared heating, or microwave heating technologies. Its main purpose is to provide a stable heat source to the heating roller 21 through different heat conduction mechanisms.

[0018] By installing heating components 2 at the inlet and outlet of the spraying section 1, instantaneous heating treatment of the fabric before and after spraying is achieved. Specifically, preheating the fabric before spraying reduces its adsorption capacity for liquid paint, thereby reducing the tendency of paint to penetrate upon contact. Simultaneously, instantaneous heating of the fabric after spraying accelerates the paint curing process, significantly compressing the paint's flow time window on the fabric and fundamentally curbing excessive migration of paint to the back of the fabric. This effectively solves the problem of excessive penetration caused by slow paint curing speed in existing technologies, while avoiding the problems of uneven coating or insufficient coverage caused by reducing spraying pressure or spray volume.

[0019] The working principle of this embodiment is as follows: The coating is uniformly sprayed through the spraying section 1, providing a basic coating for the fabric. Heating components 2 are located at the inlet and outlet of the spraying section 1, used to heat the fabric before and after spraying. A heating roller 21 is rotatably mounted on the base 22, contacting the fabric and transferring heat. A heating section 23 is located inside the heating roller 21, rapidly transferring heat to its surface through internal heating. Furthermore, before spraying, the heating roller 21 preheats the fabric, increasing its temperature to reduce its adsorption capacity for liquid coating, thereby reducing the tendency of the coating to penetrate upon contact. After spraying, the heating roller 21 continues to contact the fabric through rotation, ensuring uniform heat distribution on the fabric surface and causing the coating to rapidly change from liquid to solid. Thus, the coating can quickly solidify after leaving the spraying area, significantly shortening its flow time window on the fabric and fundamentally suppressing excessive migration of the coating to the back of the fabric. Specifically, this instant heating method not only improves the curing efficiency of the coating, but also avoids coating quality problems caused by uneven curing, thus effectively solving the problem of excessive coating penetration.

[0020] This application further proposes a heating section 23 including a channel 231 and a pipe 232. The channel 231 is spirally arranged inside the heating roller 21, and the pipe 232 is arranged inside the base 22 and communicates with the channel 231. The channel 231 refers to an internal path for conducting heat energy, which can be implemented using a metal heat pipe or a ceramic heating pipe, with the aim of improving the uniformity of heat distribution by extending the heat flow path.

[0021] By optimizing the internal structure design of the heating section 23, the heat transfer efficiency and distribution uniformity are significantly improved, thereby accelerating the initial curing process of the coating on the fabric surface. The channel 231 is arranged spirally inside the heating roller 21. This design effectively extends the heat flow path within the heating roller, allowing heat to diffuse evenly along the roller surface, avoiding localized overheating or underheating, and ensuring consistent heating of the fabric as it passes through the heating roller, quickly triggering the coating curing reaction. Simultaneously, the pipe 232 is integrated inside the base 22 and communicates with the channel 231. This layout reduces heat loss during the transfer of heat from the external heat source to the heating roller, ensuring the continuity and stability of the heat supply. Furthermore, the design of the heating section 23, working in conjunction with the heating roller 21 and the base 22, further enhances the immediate curing effect of the coating after spraying, fundamentally reducing the possibility of coating migration to the back of the fabric.

[0022] This application further proposes a spraying unit 1 comprising: a housing 11 providing a working space for spraying paint; a paint tank 12 for containing paint; and a nozzle 13 disposed inside the housing 11 for spraying the paint inside the paint tank 12 onto the fabric.

[0023] The outer shell 11 refers to the structural component that provides a closed environment for the spraying operation. It can be made by splicing metal sheets or by one-piece injection molding of high-strength plastic. Its purpose is to isolate external airflow interference and maintain the stability of the spraying environment. The paint tank 12 can be understood as a container structure with storage function. It can be made of a box structure made of corrosion-resistant material or an intelligent storage tank with liquid level monitoring function. Its purpose is to ensure a continuous and uniform supply of paint.

[0024] This application further proposes that the spraying section 1 is provided with a negative pressure section 3 to prevent the overflow of suspended matter.

[0025] The negative pressure section 3 refers to a device that captures and removes suspended particles by generating negative pressure suction. It can be implemented using an air pump in conjunction with pipes and filters. In practical applications, the design of the negative pressure section 3 needs to be adapted to the specific structure of the spraying section 1 to ensure that it can cover key locations such as the inlet, outlet, and internal space. Its purpose is to effectively block the diffusion path of atomized coating particles to the external environment.

[0026] This application further proposes that the negative pressure unit 3 includes: a negative pressure chamber 41, which is set at the inlet and outlet, and a negative pressure pipe 42, which is connected to the negative pressure chamber 41 and connected to an external negative pressure source.

[0027] By installing negative pressure chambers 41 at the inlet and outlet, and connecting them to an external negative pressure source via negative pressure pipes 42, a complete negative pressure control system is formed. Negative pressure chambers 41 are positioned at key locations at the inlet and outlet, and, taking advantage of the dynamic opening characteristics of the fabric entering and leaving the spraying area, can instantly capture suspended particles generated during paint atomization, preventing their diffusion into the external environment. Negative pressure pipes 42, by establishing a stable negative pressure path, guide suspended particles from negative pressure chambers 41 to an external treatment system, thereby maintaining a clean spraying environment and reducing paint loss. Furthermore, because negative pressure chambers 41 precisely cover the opening areas during fabric movement, combined with the continuous suction of negative pressure pipes 42, the efficiency and completeness of suspended matter interception are significantly improved, solving the environmental pollution caused by the escape of suspended matter.

[0028] This application further proposes that the negative pressure section 3 also includes: a second negative pressure chamber 43, disposed inside the spraying section 1 and located below the spraying position of the nozzle 13, and a second negative pressure pipe 44, connected to the second negative pressure chamber 43 and externally connected to a negative pressure source. The second negative pressure chamber 43 is disposed inside the spraying section 1 and located below the spraying position of the nozzle 13. This arrangement is based on the physical characteristic that suspended paint particles tend to diffuse downwards under the action of gravity during the spraying process, so that unattached paint can be quickly captured, maintaining a clean environment inside the spraying area.

[0029] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0031] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0032] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A sun-protective clothing coating spraying machine, characterized in that, include: The spraying section (1) is used to spray paint onto the fabric, and Heating component (2) is set at the inlet and outlet of the spraying section (1) for heating the fabric before and after spraying. The heating component (2) includes: A heating roller (21), rotatably mounted on a base (22) fixed to the spraying section (1), is used to heat the fabric. The heating section (23) is located inside the heating roller (21) and is used to heat the heating roller (21).

2. The sun protection clothing coating spraying machine according to claim 1, characterized in that, The heating element (23) includes: Channel (231) is spirally arranged inside the heating roller (21), and The pipe (232) is located inside the base (22) and is connected to the channel (231).

3. The sun protection clothing coating spraying machine according to claim 1, characterized in that, The spraying section (1) includes: The outer casing (11) provides a working space for paint spraying. Paint container (12), used to hold paint, and The nozzle (13) is located inside the housing (11) and is used to spray the paint inside the paint tank (12) onto the fabric.

4. The sun protection clothing coating spraying machine according to claim 3, characterized in that, The spraying section (1) is provided with a negative pressure section (3) to prevent the overflow of suspended matter.

5. The sun protection clothing coating spraying machine according to claim 4, characterized in that, The negative pressure section (3) includes: Negative pressure chamber 1 (41) is set at the inlet and outlet, and Negative pressure pipe 1 (42) is connected to negative pressure chamber 1 (41) and external negative pressure source is connected.

6. The sun protection clothing coating spraying machine according to claim 5, characterized in that, The negative pressure section (3) also includes: Negative pressure chamber two (43) is located inside the spraying section (1) and below the spraying position of the nozzle (13), and Negative pressure pipe 2 (44) is connected to negative pressure chamber 2 (43) and external negative pressure source is connected.

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