Constant temperature ironing device for thermochromatic printed fabric

Abstract

The application discloses a constant-temperature ironing device for temperature-variable printed fabrics, and relates to the field of fabric ironing. The base is internally provided with a hot air mechanism; the ironing platform is arranged on the upper side of the base and is adapted to carry the temperature-variable printed fabric; and a plurality of first air holes are uniformly arranged on the ironing platform. The hot air mechanism uniformly guides the heated air to the temperature-variable printed fabric through the first air holes, so that an air gap is formed between the ironing platform and the temperature-variable printed fabric, the hot air in the air gap applies balanced thermal load and vertical pressure to the temperature-variable printed fabric, and the non-contact ironing is completed. The hot air mechanism uniformly guides the constant-temperature hot air to the temperature-variable printed fabric, so that an air gap is formed between the ironing platform and the temperature-variable printed fabric, the constant-temperature hot air applies balanced thermal load and vertical pressure to the temperature-variable printed fabric, the non-contact ironing is completed, the temperature-variable printed fabric is not in contact with the high-temperature solid surface in the whole processing process, and the problem of inactivation of temperature-variable microcapsules caused by local overheating is avoided.

Description

Technical Field

[0001] This application relates to the field of fabric ironing technology, and in particular discloses a constant temperature ironing device for thermochromic printed fabrics. Background Technology

[0002] Thermochromic printed fabrics are functional textiles that achieve dynamic color changes through heat-sensitive microcapsule technology. They have been widely used in fashion, home textiles and special clothing. In industrial production, these fabrics are usually printed, fixed and finished in roll form. Among them, ironing and shaping are key processes to ensure the flatness, dimensional stability and appearance quality of the fabric.

[0003] However, thermochromic printing layers are extremely sensitive to temperature. Traditional industrial ironing equipment, such as hot roller calenders or flatbed irons, uses the principle of contact heating and mechanical pressure, which may damage the thermochromic printing layer. The hot roller or platen is in direct contact with the fabric, which can easily generate localized instantaneous high temperatures. If the temperature exceeds the critical value of the heat-sensitive microcapsules, it will cause the microcapsules to become inactive, resulting in the permanent failure of the fabric's color-changing function and causing batch quality accidents. Because it is contact heating, mechanical pressure and physical friction may crush or scratch the delicate printing microcapsule layer, which not only affects the color-changing effect, but also forms difficult-to-repair "mirror" bright spots or indentations on the fabric surface, reducing the product's appearance. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this application is to provide a constant temperature ironing device for thermochromic printed fabrics.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a constant temperature ironing device for thermochromic printed fabric, comprising: a base, wherein a hot air mechanism is provided inside the base; an ironing platform, wherein the ironing platform is placed on the upper side of the base, the ironing platform is suitable for carrying the thermochromic printed fabric, and a plurality of evenly distributed first air holes are provided on the ironing platform; the hot air mechanism guides heated air evenly through the first air holes to the thermochromic printed fabric, thereby forming an air gap between the ironing platform and the thermochromic printed fabric, and the hot air in the air gap applies a balanced thermal load and vertical pressure to the thermochromic printed fabric to complete non-contact ironing.

[0006] As a preferred embodiment, the hot air mechanism includes an air supply device, an airflow distribution plate, and a heater. The air supply device is connected to the airflow distribution plate, and the airflow distribution plate is provided with a flow equalization array, which consists of a plurality of second air holes. The air supply device is adapted to supply air to the airflow distribution plate. After passing through the flow equalization array, the air is transformed into a balanced airflow. This airflow is guided to the heater for heating and forms uniform hot air, which then acts on the thermochromic printing fabric through the first air holes.

[0007] More preferably, the second air hole is disposed on the upper surface of the airflow distribution plate, and the second air hole is configured to increase the density gradient along the direction away from the air supply device. This density gradient is configured to offset the pressure loss of the airflow along the interior of the airflow distribution plate, thereby forming a uniform airflow field on the upper surface of the airflow distribution plate.

[0008] In a further preferred embodiment, the base is provided with a first cavity and a second cavity. The air supply device is fixedly installed in the first cavity. A vent is provided on the side of the first cavity, and the first cavity is connected to the outside through the vent. The air supply device draws in air from the outside through the vent. The airflow distribution plate is fixedly installed in the second cavity, and the air outlet of the air supply device is connected to the airflow distribution plate, thereby guiding the drawn-in air to the airflow distribution plate.

[0009] Further preferably, an air filter is provided inside the first cavity, and the air filter covers the vent.

[0010] More preferably, the air supply device includes a turbofan fan; the heater includes a PTC ceramic heating element.

[0011] As a preferred embodiment, a third cavity is provided inside the base, and a control box is fixedly installed inside the third cavity. The control box is adapted to control the flow rate and temperature of the airflow output by the hot air mechanism.

[0012] As a preferred embodiment, the ironing platform is provided with a roller assembly on its upper surface. The roller assembly includes a bracket, a first roller, and a second roller. The bracket is fixedly mounted on the ironing platform. The first roller is detachably mounted on the upper end of the bracket and is adapted to rotate on the bracket. The first roller is used to load thermochromic printed fabric. The second roller is rotatably mounted on the lower end of the bracket. The distance between the second roller and the ironing platform is not less than the maximum thickness of the thermochromic printed fabric.

[0013] Further preferably, there are two sets of roller assemblies, which are respectively arranged on both sides of the upper surface of the ironing platform. One set of roller assemblies is used for unwinding the thermochromic printed fabric, and the other set of roller assemblies is used for winding the thermochromic printed fabric. A motor is provided on the bracket of the set of roller assemblies, and the motor is connected to the corresponding first roller.

[0014] As a preferred embodiment, the upper surface of the ironing platform is coated with a Teflon coating.

[0015] As a preferred embodiment, the first cavity is provided with a plurality of temperature sensors located in the space above the heater, and the temperature sensors are adapted to monitor the temperature of the hot air flowing through the corresponding area in real time.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: (1) The hot air mechanism of this application guides constant temperature air evenly through the first air hole to the thermochromic printed fabric, so that an air gap is formed between the ironing platform and the thermochromic printed fabric. The constant temperature hot air applies a balanced heat load and vertical pressure to the thermochromic printed fabric to complete non-contact ironing. The thermochromic printed fabric does not come into contact with the high temperature solid surface during the entire processing process, thus avoiding the problem of thermochromic microcapsule deactivation caused by local overheating.

[0017] (2) This application forms a uniform and stable hot air field on the ironing platform surface, applies a balanced heat load and vertical pressure to the thermochromic printed fabric and forms an air gap. During the ironing process, there is no physical friction between the thermochromic printed fabric and the ironing platform, which effectively eliminates the appearance defects such as color difference, bright spots, indentations and uneven shaping that are common in traditional contact ironing, and ensures the consistency of batch product quality. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the working state of this utility model.

[0019] Figure 2 This is a three-dimensional structural diagram of the working state of this utility model.

[0020] Figure 3 This is a three-dimensional structural cross-sectional view of the working state of this utility model.

[0021] Figure 4 yes Figure 3 A magnified view of part A.

[0022] Figure 5 This is a three-dimensional structural diagram of the present invention.

[0023] Figure 6 This is a schematic diagram of the internal structure of this utility model.

[0024] Figure 7 This is a schematic diagram of the internal structure of this utility model.

[0025] In the diagram: 1. Base; 11. First cavity; 12. Second cavity; 13. Third cavity; 14. Vent; 2. Ironing platform; 21. First air hole; 3. Air supply device; 4. Airflow distribution plate; 41. Second air hole; 5. Heater; 6. Control box; 7. Roller assembly; 71. Support; 72. First roller; 73. Second roller; 8. Air filter; 9. Air gap. Detailed Implementation

[0026] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0028] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0029] The terms “comprising” and “having”, and any variations thereof, in the specification and claims of this application are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or device.

[0030] A preferred embodiment of this application, such as Figures 1 to 7 As shown, a constant temperature ironing device for thermochromic printed fabric includes: a base 1, in which a hot air mechanism is provided; an ironing platform 2, which is placed on the upper side of the base 1 and is suitable for carrying the thermochromic printed fabric. The ironing platform 2 is provided with a plurality of evenly distributed first air holes 21. The hot air mechanism guides heated air evenly through the first air holes 21 to the thermochromic printed fabric, so that an air gap 9 is formed between the ironing platform 2 and the thermochromic printed fabric. The hot air in the air gap 9 applies a balanced thermal load and vertical pressure to the thermochromic printed fabric to complete non-contact ironing.

[0031] This application utilizes a "non-contact" hot air ironing principle, ensuring that the thermochromic printed fabric does not come into contact with any high-temperature solid surface during the entire processing. This completely avoids the problem of thermochromic microcapsule deactivation caused by localized overheating. At the same time, the hot air field applies a balanced thermal load and vertical pressure to the entire width of the thermochromic printed fabric, effectively eliminating appearance defects such as color difference, bright spots, indentations, and uneven shaping that are common in traditional contact ironing, thus ensuring the consistency of batch product quality.

[0032] In order to generate constant temperature hot air, this application designs a specific hot air mechanism structure, which includes an air supply device 3, an airflow distribution plate 4, and a heater 5. The air supply device 3 is connected to the airflow distribution plate 4. The airflow distribution plate 4 is provided with a flow equalization array, which is composed of a number of second air holes 41. The air supply device 3 is adapted to supply air to the airflow distribution plate 4. After the air passes through the flow equalization array, it is transformed into a balanced airflow. The airflow is guided to the heater 5 and heated to form a uniform hot air, which then acts on the thermochromic printing fabric through the first air hole 21.

[0033] Furthermore, the second air hole 41 is disposed on the upper surface of the airflow distribution plate 4. The second air hole 41 is configured such that its density gradient increases along the direction away from the air supply device 3. This density gradient is configured to offset the pressure loss of the airflow along the path inside the airflow distribution plate 4, thereby forming a uniform airflow field on the upper surface of the airflow distribution plate 4. Since the air inlet of the airflow distribution plate 4 is disposed on one side and connected to the air outlet of the air supply device 3, when the gas flows in the airflow distribution plate 4, the air pressure is lower the further away from the air inlet, and less gas flows out from the second air hole 41. In order to achieve a uniform airflow output, this application adopts the above-mentioned design of the second air hole 41. The density gradient of the second air hole 41 increases along the direction away from the air supply device 3, thereby offsetting the pressure loss in the airflow distribution plate 4. This collaborative design of the airflow distribution plate 4 and the flow equalization array, especially after optimizing the distribution density of the second air hole 41, ultimately achieves the formation of a uniform and stable constant temperature hot air field on the surface of the ironing platform 2.

[0034] Furthermore, to better ensure the formation of a uniform and stable hot air field, the air supply device 3 can be isolated from the air supply plate to avoid the convergence of hot and cold airflows. Specifically, the base 1 is provided with a first cavity 11 and a second cavity 12. The air supply device 3 is fixedly installed in the first cavity 11. The first cavity 11 has a vent hole 14 on its side, which connects the first cavity 11 to the outside. The air supply device 3 draws in air from the outside through the vent hole 14. The airflow distribution plate 4 is fixedly installed in the second cavity 12. The air outlet of the air supply device 3 is connected to the airflow distribution plate 4, thereby guiding the drawn-in air to the airflow distribution plate 4. Through the design of the two cavities, the first cavity 11 is only used for air intake, and the second cavity 12 is only used for air outlet. In this way, the hot and cold airflows are physically isolated to avoid mutual convergence and affect the stability of the temperature.

[0035] Furthermore, an air filter 8 is provided inside the first cavity 11, which covers the ventilation holes 14 to filter dust and other impurities in the air, preventing them from impacting the thermochromic printing fabric and improving the lifespan of the device.

[0036] In this embodiment, the air supply device 3 can be a low-noise turbofan fan to provide a stable and controllable airflow. In this embodiment, the heater 5 can be a PTC ceramic heating element. The characteristic of a PTC ceramic heating element is that its resistance increases sharply after the temperature reaches its Curie point, thereby automatically limiting the power and stabilizing the temperature at a specific value. It has natural anti-dry burning and constant temperature characteristics. Therefore, this application uses a PTC ceramic heating element and utilizes its inherent self-limiting temperature and constant temperature characteristics to ensure that the hot air temperature is precisely controlled within a safe range. Thus, in industrial continuous production, it can effectively protect the temperature-changing function of the temperature-changing printed fabric from damage.

[0037] In this embodiment, a number of temperature sensors can be installed in the first cavity 11, and they are located in the space above the heater 5. The temperature sensors are suitable for real-time monitoring of the temperature of the hot air flowing through the corresponding area. A third cavity 13 is installed in the base 1, and a control box 6 is fixedly installed in the third cavity 13. The control box 6 is suitable for controlling the flow rate and temperature of the airflow output by the hot air mechanism.

[0038] By integrating the control box 6 inside the device and setting multiple temperature sensors above the heater 5 for real-time monitoring, a closed-loop intelligent temperature control system is formed. This enables the device to accurately adjust the air volume and temperature based on real-time feedback. It not only responds quickly but also outputs constant-temperature hot air that meets process requirements for a long time. This reduces the reliance on operator experience and ensures the stability of industrial production and the consistency of products.

[0039] In this embodiment, a roller assembly 7 is provided on the upper surface of the ironing platform 2. The roller assembly 7 includes a bracket 71, a first roller 72, and a second roller 73. The bracket 71 is fixed on the ironing platform 2. The first roller 72 is detachably mounted on the upper end of the bracket 71 and is adapted to rotate on the bracket 71. The first roller 72 is used to load thermochromic printing fabric. The second roller 73 is rotatably mounted on the lower end of the bracket 71. The distance between the second roller 73 and the ironing platform 2 is not less than the maximum thickness of the thermochromic printing fabric. There are two sets of roller assemblies 7, which are respectively arranged on both sides of the upper surface of the ironing platform 2. One set of roller assemblies 7 is used for unwinding the thermochromic printing fabric, and the other set of roller assemblies 7 is used for winding the thermochromic printing fabric. A motor (not shown in the figure) is provided on the bracket 71 of the set of roller assemblies 7, and the motor is connected to the corresponding first roller 72.

[0040] This application integrates roller assembly 7, which uses a motor to unwind one set of roller assembly 7 and rewind another set of roller assembly 7, thereby realizing continuous and automated conveying and ironing of thermochromic printed fabrics. Operators do not need to frequently load and unload single pieces of fabric as with traditional equipment, greatly reducing downtime. It is suitable for large-scale roll fabric production line operations, and production efficiency is greatly improved.

[0041] In this embodiment, the upper surface of the ironing platform 2 can be coated with a Teflon coating. The Teflon coating provides excellent non-stick and abrasion resistance, and is suitable for thermochromic fabrics of various compositions. Even if the thermochromic printed fabric comes into contact with the ironing platform 2 occasionally during the ironing process, it will not stick or wear out, effectively protecting the thermochromic printed layer.

[0042] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A constant temperature ironing device for thermochromic printed fabrics, characterized in that, include: A base, within which a hot air mechanism is installed; an ironing platform, positioned on the upper side of the base, suitable for supporting thermochromic printed fabric, the ironing platform having a plurality of evenly distributed first air holes; the hot air mechanism guides heated air evenly through the first air holes to the thermochromic printed fabric, creating an air gap between the ironing platform and the thermochromic printed fabric, the hot air in the air gap applying a balanced thermal load and vertical pressure to the thermochromic printed fabric, completing non-contact ironing.

2. The constant temperature ironing device for thermochromic printed fabric as described in claim 1, characterized in that, The hot air mechanism includes an air supply device, an airflow distribution plate, and a heater. The air supply device is connected to the airflow distribution plate, and the airflow distribution plate is provided with a flow equalization array, which is composed of a plurality of second air holes. The air supply device is adapted to supply air to the airflow distribution plate. After passing through the flow equalization array, the air is transformed into a balanced airflow. The airflow is guided to the heater and heated to form uniform hot air, which then acts on the thermochromic printing fabric through the first air holes.

3. The constant temperature ironing device for thermochromic printed fabric as described in claim 2, characterized in that, The second air hole is disposed on the upper surface of the airflow distribution plate. The second air hole is configured to increase the density gradient along the direction away from the air supply device. The density gradient is configured to counteract the pressure loss of the airflow along the interior of the airflow distribution plate, thereby forming a uniform airflow field on the upper surface of the airflow distribution plate.

4. The constant temperature ironing device for thermochromic printed fabric as described in claim 2, characterized in that, The base is provided with a first cavity and a second cavity. The air supply device is fixedly installed in the first cavity. The first cavity has a vent hole on its side, and the first cavity is connected to the outside through the vent hole. The air supply device draws in air from the outside through the vent hole. The airflow distribution plate is fixedly installed in the second cavity. The air outlet of the air supply device is connected to the airflow distribution plate, thereby guiding the drawn-in air to the airflow distribution plate.

5. The constant temperature ironing device for thermochromic printed fabric as described in claim 4, characterized in that, An air filter is provided inside the first cavity, and the air filter covers the vent.

6. The constant temperature ironing device for thermochromic printed fabric as described in claim 2, characterized in that, The air supply device includes a turbofan fan; the heater includes a PTC ceramic heating element.

7. The constant temperature ironing device for thermochromic printed fabric as described in claim 1, characterized in that, The base is provided with a third cavity, and a control box is fixedly installed in the third cavity. The control box is adapted to control the flow rate and temperature of the airflow output by the hot air mechanism.

8. The constant temperature ironing device for thermochromic printed fabric as described in claim 1, characterized in that, The ironing platform is provided with a roller assembly on its upper surface. The roller assembly includes a bracket, a first roller, and a second roller. The bracket is fixedly mounted on the ironing platform. The first roller is detachably mounted on the upper end of the bracket and is adapted to rotate on the bracket. The first roller is used to load thermochromic printed fabric. The second roller is rotatably mounted on the lower end of the bracket. The distance between the second roller and the ironing platform is not less than the maximum thickness of the thermochromic printed fabric.

9. The constant temperature ironing device for thermochromic printed fabric as described in claim 8, characterized in that, There are two sets of roller assemblies, which are respectively arranged on both sides of the upper surface of the ironing platform. One set of roller assemblies is used for unwinding the thermochromic printed fabric, and the other set of roller assemblies is used for winding the thermochromic printed fabric. A motor is provided on the bracket of the set of roller assemblies, and the motor is connected to the corresponding first roller.

10. The constant temperature ironing device for thermochromic printed fabric as described in claim 4, characterized in that, The upper surface of the ironing platform is coated with a Teflon coating; a number of temperature sensors are installed in the first cavity and are located in the space above the heater. The temperature sensors are adapted to monitor the temperature of the hot air flowing through the corresponding area in real time.

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