Dyeing apparatus capable of using multiple dip-pressure mold sets in any combination

Abstract

This utility model relates to a dyeing device with multiple immersion pressing modules that can be arbitrarily combined. It includes a fabric feeding unit, a dyeing and finishing unit, a setting unit, a drying unit, and a winding unit. On one hand, this utility model adopts a modular layout. Based on the synergistic effect of the guide roller group, pressure roller group, and liftable immersion tank in each immersion pressing module, it achieves flexible combination of different color systems and finishing agents to meet the production needs of small-batch, multi-variety products. Simultaneously, it eliminates the need to replace the rinsing immersion tank and can recover and reuse excess solvent generated during pressing, achieving wastewater-free production, effectively improving production efficiency and saving production costs. On the other hand, the pressing force on the fabric decreases progressively in each stage of multi-stage immersion pressing, effectively reducing the probability of solvent contamination during continuous pressing. Furthermore, the misalignment between the recovered solvent and the pressing section helps ensure uniform solvent penetration on the fabric surface, effectively improving the dyeing and finishing quality of the product.

Description

Technical Field

[0001] This utility model belongs to the field of textile dyeing and finishing technology, specifically relating to a dyeing device that can use multiple impregnation modules in any combination. Background Technology

[0002] Immersion dyeing is a textile dyeing process that typically refers to the method of applying dye evenly to the fabric using rollers (roller cars) during the dyeing and finishing process. For continuous production designs with similar color family or process requirements, one or two dyes are generally used.

[0003] Currently, a typical pad dyeing process includes: padding, in which the fabric is immersed in the dye solution in the immersion tank and squeezed by rollers to control the liquid content (usually between 60% and 80%); pre-drying, in which the fabric is dried at low temperature to prevent uneven dye migration; fixing, in which the fabric is steamed or baked at high temperature to allow the dye to fully combine with the fiber; and finishing, such as softening, dewatering, and setting.

[0004] However, in actual production processes, existing technologies have the following drawbacks:

[0005] 1. Existing dyeing equipment has a limited color range, and the impregnation tank needs to be rinsed every time the dye is changed (otherwise it will affect the color and luster of the next batch of textiles). Especially for small-batch, multi-variety products, this will inevitably increase the number of production steps, resulting in low production efficiency and high costs. In addition, it is easy to generate a large amount of wastewater, which not only increases the treatment cost, but also does not conform to the concept of green environmental protection.

[0006] 2. In continuous dip-rolling processes (such as two dips and two rolls), in order to avoid solvent contamination caused by continuous dip-rolling, drying is usually performed after each dip-rolling before the next dip-rolling. This not only makes the process cumbersome but also wastes energy. Summary of the Invention

[0007] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an improved dyeing device that can arbitrarily combine multiple immersion modules.

[0008] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0009] A dyeing apparatus that can arbitrarily combine multiple impregnation modules includes a fabric feeding unit, a dyeing and finishing unit, a setting unit, a drying unit, and a winding unit. The dyeing and finishing unit includes a frame with a fabric feeding end and a fabric output end, and multiple independent impregnation modules distributed at intervals in the horizontal and vertical directions on the frame. Each impregnation module includes an impregnation tank, a guide roller group and a pressure roller group disposed above the impregnation tank, and a lifting drive for driving the impregnation tank to move up and down. Each impregnation tank contains dye or finishing agent. When the fabric passes through any one or more guide roller groups from the fabric feeding end… The corresponding impregnation tank rises and forms the corresponding parts of the fabric into the impregnation section and the pressing section above the liquid surface, and the impregnation section between the impregnation section and the pressing section and immersed below the liquid surface. Based on the cooperative guidance of the remaining one or more guide roller groups and / or pressure roller groups, the fabric is conveyed to the exit end. The corresponding pressure roller group presses the fabric and drives the excess dye or finishing agent to be recovered into the corresponding impregnation tank. The pressing force on the fabric decreases step by step in the transmission direction, and the recovery path of the excess dye or finishing agent is offset from the pressing section.

[0010] According to a specific embodiment and preferred aspect of this utility model, multiple impregnation modules are distributed in a rectangular array, wherein one or more impregnation modules based on the same row or any two rows and staggered vertically constitute continuous impregnation and rolling. This layout is neat and reasonable, facilitating not only the implementation of the function of a single impregnation module but also the flexible combination of multiple impregnation modules to meet the production needs of various processes.

[0011] Preferably, the pressure roller assembly includes an extrusion roller and a bearing roller that are staggered vertically to form a pressing zone, wherein the center of the extrusion roller is located between the center of the bearing roller and the fabric inlet, and the feed inlet of the pressing zone faces downwards. This facilitates the discharge of excess dye or finishing agent formed during pressing.

[0012] Preferably, the diameter of the extrusion roller is smaller than the diameter of the pressure roller; and / or, when the pressure roller group is guided in cooperation, the fabric passes over the top of the extrusion roller and / or the pressure roller. This facilitates uniform stress on the fabric surface during pressing, thereby improving the uniformity of liquid distribution and reducing color difference.

[0013] According to another specific embodiment and preferred aspect of this utility model, the pressure roller assembly further includes an auxiliary pressure plate that is located near the feed inlet of the pressing zone and extends vertically at an incline. The upper end of the auxiliary pressure plate forms a pressing edge extending along the width direction of the fabric, and the upper surface forms a guide surface that directs excess dye or finishing agent generated during pressing to the impregnation section. The pressing edge is spaced from the pressure roller, forming a gap for the pressing section to pass through. As the pressing section passes through the gap, the pressing edge adheres the fabric to the pressure roller and simultaneously smooths the fabric surface. Here, pre-pressing is achieved through the cooperation of the auxiliary pressure plate pressing edge and the guide surface, keeping the fabric adhered to the pressure roller as it enters the pressing zone, ensuring the fabric remains flat and is pressed evenly, further reducing color difference. Simultaneously, excess solvent generated during pressing is directed to the fabric surface of the impregnation section, preventing solvent from flowing along the fabric of the pressing section under tension.

[0014] According to another specific embodiment and preferred aspect of this utility model, the guide roller assembly includes a first guide roller disposed below the pressure roller and capable of immersing in or removing from the liquid surface as the impregnation tank rises and falls. The section to be pressed is conveyed obliquely upward toward the fabric inlet end and bypasses the pressure roller to enter the pressing zone to avoid dripping dye or finishing agent. Here, based on the layout of the guide roller assembly and the pressure roller assembly, the lateral structure is more compact, which facilitates reducing the opening at the top of the impregnation tank and effectively reduces the loss of some volatile dye or finishing agent.

[0015] Preferably, in the orthographic projection on the horizontal plane, the first guide roller is located at the center of the corresponding impregnation tank.

[0016] Preferably, the centerline of the first guide roller is aligned vertically with the centerline of the pressure roller.

[0017] Preferably, the guide roller assembly further includes a second guide roller disposed above the first guide roller on the side near the fabric inlet end. When the impregnation tank rises, the fabric bypasses the second guide roller to avoid the impregnation tank and is conveyed towards the first guide roller. This effectively avoids direct contact between the fabric and the impregnation tank during its raising and lowering, reducing the probability of fabric damage.

[0018] In addition, the extrusion roller, the pressure roller, the first guide roller, and the second guide roller are rotatably connected to the frame from their ends. The structure is simple and easy to assemble and disassemble.

[0019] Due to the implementation of the above technical solution, this utility model has the following advantages compared with the prior art:

[0020] Existing dyeing equipment offers limited color options, requiring rinsing of the impregnation tanks each time the dye is changed (otherwise, the color and luster of the next batch of textiles will be affected). This is especially problematic for small-batch, multi-variety products, inevitably increasing production steps, resulting in low efficiency and high costs. Furthermore, it generates significant amounts of wastewater, increasing treatment costs and contradicting green environmental principles. In continuous padding processes (e.g., two dips and two pads), to avoid solvent contamination from continuous padding, drying is typically performed after each padding cycle, which is cumbersome and wasteful of energy. This application addresses these shortcomings by providing a holistic design for a dyeing device that allows for the combined use of multiple padding modules, cleverly resolving the deficiencies of existing technologies. With this dyeing device, the appropriate dye and finishing agent are introduced into each impregnation tank separately, allowing for the application of dyeing equipment that can be customized to meet various dyeing requirements. According to the dyeing and finishing process requirements, the fabric is sequentially passed from the infeed end through the guide rollers and pressure rollers in the impregnation module containing the corresponding color and finishing agent. Based on the cooperative guidance of the remaining one or more guide roller groups and / or pressure roller groups, the fabric is transported to the outlet end. Then, the impregnation tank containing the corresponding color and finishing agent is driven to rise, forming the corresponding part of the fabric into the impregnation section and the pressing section above the liquid surface, and the impregnation section between the impregnation section and the pressing section and immersed below the liquid surface. Then, each pressure roller group presses the fabric and drives the excess dye or finishing agent to be recovered into the corresponding impregnation tank. The pressing force on the fabric decreases step by step in the transmission direction to avoid pressing out the previous dye or finishing agent in the subsequent pressing and causing contamination of the subsequent impregnation tank. The recovery path of the excess dye or finishing agent is staggered with the pressing section to avoid flowing along the pressing section. Therefore, compared with the prior art, this utility model adopts a modular layout. Based on the synergistic effect of the guide roller group, pressure roller group and liftable impregnation tank in each impregnation module, it can flexibly combine different color systems and finishing agents to meet the production needs of small batch and multi-variety products. At the same time, there is no need to replace the rinsing impregnation tank, and the excess solvent generated by pressing can be recovered and reused, realizing wastewater-free production, effectively improving production efficiency and saving production costs. On the other hand, the pressing force on the fabric decreases step by step in the multi-stage impregnation, effectively reducing the probability of solvent contamination in continuous impregnation. In addition, the misalignment between the solvent recovered by pressing and the section to be pressed helps to ensure uniform pressing and penetration of solvent on the fabric surface, effectively improving the dyeing and finishing quality of the product. Attached Figure Description

[0021] Figure 1 This is a front view schematic diagram of a dyeing apparatus in this embodiment that can arbitrarily combine multiple immersion modules;

[0022] Figure 2 for Figure 1 A schematic diagram of the structure of a single immersion module;

[0023] Figure 3 for Figure 2 Enlarged schematic diagram of a local part of the structure;

[0024] Figure 4 This is a schematic diagram of the sampling location for color difference testing in an application example;

[0025] The components are as follows: 1. Fabric feeding unit; 2. Dyeing and finishing unit; 20. Frame; a0. Fabric feeding end; a1. Fabric output end; g5. Fabric feeding roller; g6. Fabric output roller; 21. Impregnation module; 210. Impregnation tank; 211. Guide roller group; g1. First guide roller; g2. Second guide roller; 212. Pressure roller group; g3. Extrusion roller; g4. Pressure bearing roller; q. Pressing zone; b. Auxiliary pressure plate; b0. Edge pressing; m. Guide surface; 213. Lifting driver; 3. Shaping unit; 4. Drying unit; 5. Winding unit;

[0026] B. Fabric; d1. Section to be impregnated; d2. Section to be pressed; d3. Impregnation section. Detailed Implementation

[0027] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0028] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0033] Combination Figures 1 to 3 As shown, the dyeing device of this embodiment, which can use multiple immersion modules in any combination, includes a fabric feeding unit 1, a dyeing and finishing unit 2, a setting unit 3, a drying unit 4, and a winding unit 5.

[0034] In this example, the fabric feeding unit 1, the shaping unit 3, the drying unit 4, and the winding unit 5 are all existing technologies, which are used to realize the functions of fabric feeding, shaping and flattening, drying and color development, and winding. They will not be described in detail here.

[0035] In this example, the dyeing and finishing unit 2 includes a frame 20 with a fabric inlet a0 and a fabric outlet a1, and multiple impregnation and pressing modules 21 distributed horizontally and vertically at intervals on the frame 20, each capable of independently performing impregnation and pressing. The number of impregnation and pressing modules 21 is determined by the factory space. In this embodiment, there are nine impregnation and pressing modules 21 arranged in a rectangular array. One or more impregnation and pressing modules 21 arranged in the same row or any two rows but staggered vertically form a continuous impregnation and pressing unit. This layout is neat and reasonable, which not only facilitates the implementation of the function of a single impregnation and pressing module, but also facilitates the flexible combination of multiple impregnation and pressing modules to meet the production needs of various processes.

[0036] In some specific embodiments, each impregnation module 21 includes an impregnation tank 210, a guide roller group 211 and a pressure roller group 212 disposed above the impregnation tank 210, and a lifting drive 213 for driving the impregnation tank 210 to move up and down. Each impregnation tank 210 contains dye or finishing agent. When fabric B passes through any one or more guide roller groups 211 from the fabric inlet end, the corresponding impregnation tank 210 rises, forming the corresponding portion of the fabric above the liquid surface as the impregnation section d1 and the pressing section d2. The impregnation section d3, located between the pressing section d2 and the impregnation section d3 and below the liquid surface, is used to guide the fabric towards the exit end a1 based on the cooperative guidance of the remaining one or more guide roller groups 211 and / or pressure roller groups 212. The corresponding pressure roller group 212 presses the fabric and drives excess dye or finishing agent to be recovered into the corresponding impregnation tank 210. The pressing force on the fabric decreases step by step in the transmission direction, and the recovery path of excess dye or finishing agent is offset from that of the pressing section d2.

[0037] Each impregnation tank 210 is equipped with dyes and functional finishing agents allocated and input by the control system, which is a conventional technical method and will not be described in detail here. The lifting drive 213 adopts a hydraulic lifting platform, which drives the lifting and lowering of each impregnation tank based on hydraulic drive.

[0038] In this example, the guide roller assembly 211 includes a first guide roller g1 that can be immersed in or removed from the liquid surface as the impregnation tank 210 rises and falls, and a second guide roller g2 disposed above the first guide roller g1 near the fabric inlet a0. When the impregnation tank 210 rises, the fabric bypasses the second guide roller g2 to avoid the impregnation tank 210 and is conveyed towards the first guide roller g1. When the fabric passes the first guide roller g1, it forms the aforementioned impregnation section d1, pressing section d2, and impregnation section d3. The pressure roller assembly 212 includes an extrusion roller g3 and a pressure roller g4 that are staggered vertically and form a pressing zone q. The center of the extrusion roller g3 is located between the center of the pressure roller g4 and the fabric inlet a0. The feed port of the pressing zone q faces downward to facilitate the discharge of excess dye or finishing agent formed during pressing.

[0039] For ease of implementation, the compression roller g3, the pressure roller g4, the first guide roller g1, and the second guide roller g2 are rotatably connected to the frame 20 from their ends. Meanwhile, for convenient fabric feeding and discharging, the frame 20 is also equipped with an adjustable feed roller g5 and a discharge roller g6.

[0040] In some specific embodiments, the first guide roller g1 is located below the pressure roller g4, and the center line of the first guide roller g1 is aligned vertically with the center line of the pressure roller g4. At the same time, in the orthographic projection on the horizontal plane, the first guide roller g1 is located at the center of the corresponding impregnation tank 210. The section to be pressed d2 is obliquely conveyed upward towards the feed end a0 and bypasses the pressure roller g4 to enter the pressing zone q to avoid the dye or finishing agent dripping from the pressing.

[0041] Furthermore, the diameter of the extrusion roller g3 is smaller than the diameter of the bearing roller g4; when the pressure roller group cooperates in guiding, the fabric passes over the top of the extrusion roller g3 and / or the bearing roller g4. It should be specifically noted that in the modular impregnation layout of this application, when any impregnation module is assembled, it is transported through the cooperative guiding of the extrusion roller g3 and / or the bearing roller g4 in the remaining impregnation modules. The purpose is to flexibly meet the transmission needs of the fabric in different impregnation module combinations.

[0042] Furthermore, for easier implementation, the pressure roller assembly 212 in this embodiment also includes an auxiliary pressure plate b, which is located near the feed inlet of the pressing zone q and extends vertically at an angle. The upper end of the auxiliary pressure plate b forms a pressure edge b0 extending along the width direction of the fabric, and the upper surface forms a guide surface m that guides excess dye or finishing agent generated during pressing to the impregnation section d1. The pressure edge b0 is spaced from the pressure roller g4, forming a gap for the pressing section d2 to pass through. As the pressing section d2 passes through the gap, the pressure edge b0 adheres the fabric to the pressure roller g4 and simultaneously smooths the fabric surface. Here, pre-pressing is achieved based on the cooperation of the auxiliary pressure plate pressure edge and the guide surface, keeping the fabric adhered to the pressure roller as it enters the pressing zone, ensuring that the fabric remains flat and is pressed evenly; at the same time, excess solvent generated during pressing is guided to the surface of the fabric in the impregnation section, preventing the solvent from flowing along the fabric in the pressing section under tension.

[0043] After adopting this dyeing device, the corresponding dyes and finishing agents are input into each impregnation tank. According to the dyeing and finishing process requirements, the fabric is passed sequentially from the inlet end through the guide rollers and pressure rollers in the impregnation module where the corresponding color and finishing agent are located. Based on the cooperative guidance of the remaining one or more guide roller groups and / or pressure roller groups, the fabric is transported to the outlet end. Then, the impregnation tank where the corresponding color and finishing agent are located is driven to rise, forming the corresponding part of the fabric into the impregnation section and the pressing section above the liquid surface, and the impregnation section between the impregnation section and the pressing section and immersed below the liquid surface. Then, each pressure roller group presses the fabric and drives the excess dye or finishing agent to be recovered into the corresponding impregnation tank. The pressing force on the fabric decreases step by step in the transmission direction to avoid pressing out the previous dye or finishing agent in the subsequent pressing and causing contamination to the subsequent impregnation tank. The recovery path of the excess dye or finishing agent is staggered with the pressing section to avoid flowing along the pressing section. Therefore, compared with the prior art, this utility model adopts a modular layout. Based on the synergistic effect of the guide roller group, pressure roller group and liftable impregnation tank in each impregnation module, it can flexibly combine different color systems and finishing agents to meet the production needs of small batch and multi-variety products. At the same time, there is no need to replace the rinsing impregnation tank, and the excess solvent generated by pressing can be recovered and reused, realizing wastewater-free production, effectively improving production efficiency and saving production costs. On the other hand, the pressing force on the fabric decreases step by step in the multi-stage impregnation, effectively reducing the probability of solvent contamination in continuous impregnation. In addition, the misalignment between the solvent recovered by pressing and the section to be pressed helps to ensure uniform pressing and penetration of solvent on the fabric surface, effectively improving the dyeing and finishing quality of the product.

[0044] The following provides an application example of production using the dyeing apparatus described above, which can arbitrarily combine multiple impregnation modules, to further illustrate the above scheme. In this example, the positions of each impregnation module 21 are sequentially numbered N1, N2…N9. The sample fabric used is desized 300D Oxford cloth, with a thickness of 160g / m2 and a density of 25X17. The chemical raw materials used are: antistatic agent JL-NSX from Shandong Juli Antistatic Technology Co., Ltd.; composite antifungal and antibacterial agent NISSI-1023 from Rizhao Nisi Environmental Protection Materials Co., Ltd.; flame retardant FPK8001 from Hert International Group Co., Ltd.; penetrant JFC from Jiangsu Haian Petrochemical Plant; sodium dodecyl sulfate from Henan Hongzhi Chemical Products Co., Ltd.; and 30-mesh sodium alginate with a viscosity of 500mPa·s from Lianyungang Huanyu Algae Additives Co., Ltd.

[0045] Application Example 1

[0046] According to Example 3 of Invention Patent 201810173941.3, a dyeing paste was prepared and added to the impregnation tank located at position N1. A functional finishing agent was prepared by uniformly mixing antistatic agent JL-NSX, penetrant JFC, sodium dodecyl sulfate, sodium alginate, and water at mass fractions of 5%, 1%, 2%, and 1%, and added to the impregnation tank located at position N2 for later use.

[0047] Take a 120-meter sample fabric and feed it into the equipment's feed unit. Turn on the equipment's operation switch and guide the sample fabric around the guide roller group located at position N1. Drive the impregnation tank located at position N1 to rise, immersing the sample fabric in the sizing agent. After sufficient impregnation, wind it around the corresponding pressure roller group. After pressing, control the pressure so that the moisture content of the sample fabric after pressing is 30%. Then, wind the sample fabric around the guide roller group located at position N2, while simultaneously driving the impregnation tank located at position N2 to rise, immersing the sample fabric in the finishing agent. After sufficient impregnation, wind it around the corresponding pressure roller group to press the sample fabric. Control the pressure so that the moisture content after pressing is 40%. The sample fabric then winds over the pressure roller group located at position N3 and is transmitted from the fabric output end of the frame. Turn on the power of all the guide rollers that the sample fabric passes through and adjust them to synchronize their speeds. The sample fabric enters the shaping and flattening stage, and then successively passes through the drying and coloring stages. After coloring, it is wound up to obtain the finished product. In this embodiment, the first drying temperature is set to 100℃ and the second drying temperature is set to 180℃. After drying and color development, the Oxford cloth is sample 1#.

[0048] Application Example 2

[0049] According to Example 3 of Invention Patent 201810173941.3, a dyeing paste was prepared and added to the impregnation tank located at position N4. A functional finishing agent was prepared by uniformly mixing antistatic agent JL-NSX, penetrant JFC, sodium dodecyl sulfate, sodium alginate, and water at mass fractions of 5%, 1%, 2%, and 1%, and then added to the impregnation tank located at position N5 for later use.

[0050] Take a 120-meter sample fabric and feed it into the equipment's feed unit. Turn on the equipment's operation switch and guide the sample fabric around the guide roller group located at position N4. Drive the impregnation tank located at position N4 to rise, immersing the sample fabric in the sizing agent. After sufficient impregnation, wind it around the corresponding pressure roller group. After pressing, control the pressure so that the moisture content of the sample fabric after pressing is 30%. Then, wind the sample fabric around the guide roller group located at position N5, while simultaneously driving the impregnation tank located at position N5 to rise, immersing the sample fabric in the finishing agent. After sufficient impregnation, wind it around the corresponding pressure roller group to press the sample fabric. Control the pressure so that the moisture content after pressing is 40%. The sample fabric then winds over the pressure roller group located at position N6 and is transmitted from the fabric output end of the frame. Turn on the power of all the guide rollers that the sample fabric passes through and adjust them to synchronize their speeds. The sample fabric enters the shaping and flattening stage, and then successively passes through the drying and coloring stages. After coloring, it is wound up to obtain the finished product. In this embodiment, the first drying temperature is set to 100℃ and the second drying temperature is set to 190℃. After drying and color development, the Oxford cloth is sample 2#.

[0051] Application Example 3

[0052] According to Example 3 of Invention Patent 201810173941.3, a dyeing paste was prepared and added to the impregnation tank located at position N7. An antistatic agent JL-NSX, a penetrant JFC, sodium dodecyl sulfate, sodium alginate, and water were mixed evenly in amounts of 5%, 1%, 2%, and 1% by mass to prepare a functional finishing agent, which was then added to the impregnation tank located at position N5 for later use.

[0053] Take a 120-meter sample fabric and feed it into the equipment's feed unit. Turn on the equipment's operation switch and guide the sample fabric around the guide roller group located at position N7. Drive the impregnation tank located at position N7 to rise, immersing the sample fabric in the sizing agent. After sufficient impregnation, wind it around the corresponding pressure roller group. After pressing, control the pressure so that the moisture content of the sample fabric after pressing is 30%. Then, wind the sample fabric around the guide roller group located at position N8, while simultaneously driving the impregnation tank located at position N8 to rise, immersing the sample fabric in the finishing agent. After sufficient impregnation, wind it around the corresponding pressure roller group to press the sample fabric. Control the pressure so that the moisture content after pressing is 40%. The sample fabric then winds over the pressure roller group located at position N9 and is transmitted from the fabric output end of the frame. Turn on the power of all the guide rollers that the sample fabric passes through and adjust them to synchronize their speeds. The sample fabric enters the shaping and flattening stage, and then successively passes through the drying and coloring stages. After coloring, it is wound up to obtain the finished product. In this embodiment, the first drying temperature is set to 110℃ and the second drying temperature is set to 200℃. After drying and color development, the Oxford cloth is sample 3#.

[0054] Comparative example (a comparative example involves placing dyes and functional auxiliaries in the same impregnation bath; processing in the same bath will reduce color fastness and flame retardancy)

[0055] The dyeing paste was prepared according to Example 1 of Invention Patent 201810173941.3 and added to the impregnation tank. Flame retardant FPK8001, penetrant JFC and water were mixed in amounts of 35% and 1% by mass and added to the impregnation tank for later use.

[0056] Take 120 meters of sample fabric and put it into the feeding device of the equipment. Turn on the equipment operation switch and put the sample fabric into the impregnation tank ③ under the guidance of the guide roller. After impregnation and pressing, set the first drying temperature to 110℃ and the second color development temperature to 200℃. After drying and color development, the Oxford cloth is sample 4#.

[0057] Sample testing methods and results:

[0058] Color fastness to rubbing was tested according to GB / T 3920-2008; color fastness to washing was tested according to GB / T 5713-2013; and color fastness to soaping was tested according to GB / T 3921-2008. Antistatic properties were tested according to GB 12014-2009 "Antistatic Clothing". Flame retardancy was tested according to GB / T5455 "Textiles - Burning Performance: Vertical Destruction Length, Afterflame and Residual Flame Time"; and antibacterial properties were tested according to GB / T 20944.3-2008 "Evaluation of Antibacterial Properties of Textiles - Part 3: Vibration Method".

[0059] Products Figure 4 Sampling was performed at the positions shown. The color difference between the front and back sides at position ① is defined as the front-back color difference, the color difference between positions ① and ② is the latitudinal color difference, and the color difference between positions ① and ③ is the radial color difference. The longitudinal, latitudinal, and front-back color differences were measured using a WSC-S colorimeter manufactured by Shanghai Instrument & Electronics Physical Optical Instrument Co., Ltd. The test results for all samples are shown in Table 1.

[0060] Table 1 Sample Test Results

[0061]

[0062] The present utility model has been described in detail above, with the aim of enabling those skilled in the art to understand its contents and implement it. However, this description should not be construed as limiting the scope of protection of the present utility model. All equivalent changes or modifications made in accordance with the spirit and essence of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A dyeing apparatus that can arbitrarily combine multiple impregnation modules, comprising a fabric feeding unit, a dyeing and finishing unit, a setting unit, a drying unit, and a winding unit, characterized in that, The dyeing and finishing unit includes a frame with a fabric inlet and a fabric outlet, and multiple independent impregnation modules distributed horizontally and vertically on the frame. Each impregnation module includes an impregnation tank, a guide roller group and a pressure roller group disposed above the impregnation tank, and a lifting driver for driving the impregnation tank to move up and down. Each impregnation tank contains dye or finishing agent. When the fabric passes through any one or more guide roller groups from the fabric inlet, the corresponding impregnation tank rises and forms the corresponding part of the fabric into a section to be impregnated and a section to be pressed above the liquid surface, and an impregnation section located between the section to be impregnated and the section to be pressed and immersed below the liquid surface. Based on the cooperative guidance of the remaining one or more guide roller groups and / or pressure roller groups, the fabric is transferred to the fabric outlet. The corresponding pressure roller group presses the fabric and drives excess dye or finishing agent to be recovered into the corresponding impregnation tank. The pressing force on the fabric decreases step by step in the transmission direction, and the recovery path of excess dye or finishing agent is offset from the section to be pressed and immersed.

2. The dyeing apparatus according to claim 1, which allows for the arbitrary combination of multiple impregnation modules, is characterized in that... The multiple impregnation modules are distributed in a rectangular array, wherein one or more impregnation modules based on the same row or any two rows and staggered vertically constitute one impregnation and one rolling or continuous impregnation and continuous rolling.

3. The dyeing apparatus according to claim 1, which allows for the arbitrary combination of multiple immersion modules, is characterized in that... The pressure roller assembly includes an extrusion roller and a bearing roller that are staggered vertically to form a pressing zone, wherein the center of the extrusion roller is located between the center of the bearing roller and the fabric inlet, and the feed port of the pressing zone faces downward.

4. The dyeing apparatus according to claim 3, which allows for the arbitrary combination of multiple immersion modules, is characterized in that... The diameter of the extrusion roller is smaller than the diameter of the bearing roller; and / or, when the pressure roller group is guided in cooperation, the fabric passes over the extrusion roller and / or the bearing roller.

5. The dyeing apparatus according to claim 3, which allows for the arbitrary combination of multiple impregnation modules, is characterized in that... The pressure roller assembly also includes an auxiliary pressure plate that is located near the feed inlet of the pressing zone and extends vertically at an angle. The upper end of the auxiliary pressure plate forms a pressing edge that extends along the width of the fabric, and the upper surface forms a guide surface that directs excess dye or finishing agent generated during pressing to the section to be impregnated. The pressing edge is spaced from the pressure roller and forms a gap for the section to be pressed to pass through. As the section to be pressed passes through the gap, the pressing edge adheres the fabric to the pressure roller and simultaneously smooths the fabric surface.

6. The dyeing apparatus according to claim 3, which allows for the arbitrary combination of multiple impregnation modules, is characterized in that... The guide roller assembly includes a first guide roller disposed below the pressure roller and capable of being immersed in or removed from the liquid surface as the impregnation tank is raised and lowered. The section to be pressed is conveyed obliquely upward toward the feed end and bypasses the pressure roller to enter the pressing zone to avoid the dye or finishing agent dripping from the pressing.

7. The dyeing apparatus according to claim 6, which allows for the arbitrary combination of multiple impregnation modules, is characterized in that... In the orthographic projection on the horizontal plane, the first guide roller is located at the center of the corresponding impregnation tank.

8. The dyeing apparatus according to claim 6, which allows for the arbitrary combination of multiple impregnation modules, is characterized in that... The centerline of the first guide roller is aligned vertically with the centerline of the pressure roller.

9. The dyeing apparatus according to claim 6, which allows for the arbitrary combination of multiple immersion modules, is characterized in that... The guide roller assembly also includes a second guide roller disposed above the side of the first guide roller near the fabric inlet end. When the impregnation tank rises, the fabric bypasses the second guide roller to avoid the impregnation tank and is conveyed towards the first guide roller.

10. The dyeing apparatus according to claim 8, which allows for the arbitrary combination of multiple impregnation modules, is characterized in that... The extrusion roller, pressure roller, first guide roller, and second guide roller are rotatably connected to the frame from their ends.

Images