A dyeing and finishing apparatus and method for blended fabrics

Abstract

This invention relates to the field of dyeing and finishing technology for blended fabrics, specifically to a dyeing and finishing device and method for blended fabrics. The device includes a dyeing vat with a bottom heating assembly. A front polygonal belt-type co-feeding dyeing assembly is installed on one side of the vat, and an inner support frame is fixed to the other side. A multi-tube spray dyeing assembly is installed at the top of the vat between the inner support frame and the front polygonal belt-type co-feeding dyeing assembly. A multi-roller padding dyeing assembly is installed at the upper part of the inner support frame. This invention solves the problem of dyeing fluctuations caused by differences in free movement and uneven fluid in traditional open dyeing vats for blended fabrics, achieving dyeing uniformity. Through ingenious structural integration, it completely eliminates the need for high-energy-consuming, high-cost, fabric-damaging, and complex-to-maintain independent stirring equipment and its auxiliary systems.

Description

Technical Field

[0001] This invention relates to the field of dyeing and finishing technology for blended fabrics, specifically to a dyeing and finishing apparatus and method for blended fabrics. Background Technology

[0002] The dyeing and finishing equipment for blended fabrics is crucial for achieving the dyeing and finishing processes. Its structural design ensures the fabric is evenly heated and dyed throughout the entire process, achieving ideal color and performance results. The main equipment includes dyeing machines, finishing machines, and setting machines, each with specific structural characteristics. The dyeing machine typically consists of a dye bath, heating system, stirring system, and conveying system. The dye bath is made of corrosion-resistant materials to ensure stability under high-temperature conditions. The heating system controls the temperature using steam or electricity to ensure complete dye dissolution and uniform dyeing of the fabric. The stirring system uses mechanical or gas agitation to prevent uneven dyeing and improve dyeing quality. The conveying system ensures the fabric is evenly immersed in the dye bath and commonly uses roller or continuous designs to meet the needs of mass production.

[0003] For example, the dyeing and finishing equipment for polyester blended fabrics disclosed in authorization announcement number CN217869511U includes a shell, a conveyor belt, side baffles, a drive motor, a control box, a filter box, a rotating door, indicator lights, a display screen, a blower, and a heating shell. The shell has a through hole on its side, through which the conveyor belt passes and is located inside the shell. The side of the conveyor belt is connected to the side baffles. The bottom of the conveyor belt is connected to the drive motor. The outer end face of the drive motor is connected to the side baffles. The side baffles are connected to the side of the shell. The side of the shell is connected to the control box. The use of a heat transfer medium for heat conduction through the filter box structure reduces the risk of pipe blockage, and the combination of the conveyor belt and side baffles ensures stable transmission of raw materials within the device. However, during use, due to the dyeing vat itself... Essentially, it is a relatively open container. The movement of the fluid (dye liquor) inside is affected by multiple factors such as gravity, inertia, viscosity, equipment structure, and the movement of the fabric itself. Among them, blended fabrics have different fiber compositions (such as polyester, cotton, viscose, etc.) in terms of density, water absorption, and morphological structure. The resistance and drag force generated when moving in the dye liquor are significantly different. This makes it difficult to keep the immersion depth, unfolding state, and movement speed of the fabric in the dye bath absolutely consistent. The contact time, pressure, and exchange efficiency between different parts and the dye liquor fluctuate randomly, which can easily cause uneven dyeing. In addition, in order to ensure that the dye liquor temperature and color are uniform throughout the dye bath, a separate stirring device is required. This type of stirring device also requires additional mechanical structure, power system, and maintenance, increasing the investment and operating costs of the dyeing and finishing process. Summary of the Invention

[0004] The purpose of this invention is to provide a dyeing and finishing device and method for blended fabrics. The blended fabric to be dyed passes under the front polygonal belt co-feeding dyeing assembly in the dyeing vat, enters the empty end between the two side belt driven mixing assemblies, and is introduced into the double-roller elastic pressing structure and multi-roller pad dyeing assembly until the end of the blended fabric enters the next stage of drying and dyeing equipment. During dyeing, a stepper motor transmits power to the multi-roller pad dyeing assembly and the side belt driven mixing assembly, so that the blended fabric is immersed in the front polygonal belt co-feeding dyeing assembly and pad dyed by the double-roller elastic pressing structure and the multi-roller pad dyeing assembly. During this process, the multi-pipe spray re-dyeing assembly continuously re-dyes, and the PLC control panel, electric heating tube, and temperature sensor control the temperature of the dye liquor in the dyeing vat until the blended fabric is dyed, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a dyeing and finishing device for blended fabrics, comprising a dyeing vat with a bottom heating component, wherein a front polygonal belt co-feeding dyeing assembly is installed on one side inside the dyeing vat, and an inner support frame is fixed on the other side inside the dyeing vat. A multi-pipe spray dyeing assembly is installed at the top of the dyeing vat between the inner support frame and the front polygonal belt co-feeding dyeing assembly. A multi-roller padding dyeing assembly is installed at the upper part inside the inner support frame, and a side belt type driven mixing assembly is installed on both the front and rear inner walls of the inner support frame below the multi-roller padding dyeing assembly. The multi-roller padding dyeing assembly, the side belt type driven mixing assembly, and the front polygonal belt co-feeding dyeing assembly are all connected by power.

[0006] A gap is provided between the two side-band driven mixing assemblies for the passage of textile fabric. A double-roller elastic pressing structure is installed inside the inner support frame on one side of the multi-roller pad dyeing assembly. A stepper motor for driving the multi-roller pad dyeing assembly is installed on the outer wall of one side of the inner support frame. A PLC control panel is installed on one side of the dyeing vat surface. The output terminal of the PLC control panel is electrically connected to the input terminal of the heating component, the stepper motor, and the multi-tube spray dyeing assembly.

[0007] Preferably, the heating assembly includes electric heating tubes installed on both sides of the bottom of the dyeing vat and a temperature sensor installed on the outer wall of one side of the dyeing vat. The probe of the temperature sensor extends into the interior of the dyeing vat. The input end of the electric heating tube is electrically connected to the output end of the PLC control panel, and the output end of the temperature sensor is electrically connected to the input end of the PLC control panel. Drain valves are installed at the corners of the bottom of the dyeing vat through right-angle tubes.

[0008] Preferably, the front polygonal belt co-feeding dyeing assembly includes an H-shaped long plate frame fixed on the inner wall of the dyeing vat above the electric heating tube, a guide plate installed on the outer wall of the H-shaped long plate frame away from the inner support frame, and a driving side shaft and a driven side shaft rotatably installed on the left and right outer walls of the H-shaped long plate frame. A plurality of driving pulleys and driven pulleys are fixed at one end of the surface of the driving side shaft and the driven side shaft, respectively. A conveyor belt is fitted between the driving pulleys and driven pulleys in the same X-axis direction.

[0009] Preferably, longitudinal beams are rotatably installed on both sides of the top of the H-shaped long plate frame, and the longitudinal beams abut against several conveyor belts, so that the several conveyor belts are in a taut state.

[0010] Preferably, the multi-roll dyeing assembly includes a main roll rotatably mounted inside one side of the inner support frame, a short shaft rotatably mounted on the outer wall of one side of the inner support frame, and a front traction roll rotatably mounted inside the inner support frame below the main roll. A two-stage belt drive structure for power transmission is installed between the same end of the front traction roll and the short shaft. A gear drive structure for maintaining synchronous reverse rotation is installed between the short shaft and the main roll. A first-stage belt drive structure for driving the active side shaft to rotate is installed at the other end of the front traction roll.

[0011] Preferably, both ends of the surface of the front traction roller are fixed with rubber sleeves, and a rear traction roller is rotatably installed inside the inner support frame on the right side of the front traction roller. A three-stage belt drive structure is installed between the rear traction roller and the front traction roller.

[0012] Preferably, the double-roller elastic pressing structure includes a support rod fixed inside the inner support frame on the left side of the main roll, a flat folding arm fixed at both ends of the support rod surface, and a swing arm fitted on the support rod surface on one side of the flat folding arm. A tension spring is installed between the swing arm and the flat folding arm, and a steel roller is rotatably installed between the two swing arms in the Y-axis direction.

[0013] Preferably, the side-belt driven mixing assembly includes an upper drive shaft rotatably mounted inside the inner support frame, a front pulley shaft rotatably mounted on the front and rear inner walls of the inner support frame, and a tensioner installed inside the inner support frame to the right of the front pulley shaft. A belt is installed between the upper drive shaft, the tensioner, and the belt. A three-bladed agitator is fixed to one end of the front pulley shaft. A four-gear speed-increasing transmission structure for power connection is installed between the upper drive shaft and the front traction roller.

[0014] Preferably, the multi-pipe spray dyeing assembly includes a square-mouthed riser fixed on the inner wall of the front and rear of the dyeing vat above the H-shaped long plate frame, a plurality of diversion pipes installed between the two square-mouthed risers, and a plurality of nozzles installed on the outer wall of the diversion pipes near the side of the driven mixing assembly. A delivery pump is installed on one side of the surface of the dyeing vat. The inlet end of the delivery pump extends into the interior of the dyeing vat through a pipe, and the outlet end of the delivery pump is connected to the inlet end of one of the square-mouthed risers through a pipe.

[0015] The present invention also provides a dyeing and finishing method for blended fabrics, using the aforementioned blended fabric dyeing and finishing apparatus, comprising the following steps:

[0016] S101: Check the liquid level of the dyeing vat, the condition of each roller and the side belt, and adjust the temperature of the dyeing liquid in the dyeing vat according to the dyeing process requirements through the PLC control panel, electric heating tube and temperature sensor to ensure that the temperature of the dyeing liquid is stable within the preset range. After confirming that it is normal, place the roll of blended fabric to be dyed and finished on the unwinding device, manually pull the end of the fabric through the bottom of the front multi-side belt co-feeding dyeing assembly, and enter the gap formed between the front and rear side belt driven mixing assembly. After passing through the gap, it passes through the double roller elastic pressing structure and the side belt driven mixing assembly in sequence, and finally fixes the head of the fabric to the external take-up roller or introduces the head of the fabric into the drying equipment of the next dyeing and finishing process.

[0017] S102: The stepper motor is controlled to start working through the PLC control panel. The rotational power of the stepper motor is transmitted to the multi-roller dyeing assembly, the side belt driven mixing assembly, and the front multi-side belt co-feeding dyeing assembly. Under the traction of the front multi-side belt co-feeding dyeing assembly, the multi-roller dyeing assembly, and the double-roller elastic pressing structure, the fabric fluctuation is eliminated. The side belt driven mixing assembly continues to operate, and its rotational motion generates directional fluid shear force, which drives the dye liquor to form an orderly flow along the fabric's direction of travel. In addition, the multi-pipe spray dyeing assembly sprays fresh dye liquor with a preset temperature and concentration onto the surface of the dyed blended fabric according to the PLC instructions.

[0018] S103: After the dyed fabric leaves the liquid surface and the multi-pipe spray dyeing assembly, the double-roller elastic pressing structure first contacts the wet fabric, applying uniform and controllable pressure to initially squeeze out excess liquid and eliminate air bubbles on the fabric surface. Then the fabric enters the multi-roller pad dyeing assembly, which performs pressing and strongly forces the dye liquor to penetrate deeply into the fiber.

[0019] S104: The dyed fabric is pulled by an external conveyor system and smoothly fed into the next stage of drying or color-fixing equipment.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows: This blended fabric dyeing and finishing device and method comprises a front polygonal belt co-feeding dyeing assembly, a side belt driven mixing assembly, a gap section, a multi-pipe spray dyeing assembly, a double-roller elastic pressing structure, and a multi-roller padding dyeing assembly, among other mutually cooperating structures. The blended fabric to be dyed passes under the front polygonal belt co-feeding dyeing assembly in the dyeing vat, enters the gap between the two side belt driven mixing assemblies, and is introduced into the double-roller elastic pressing structure and the multi-roller padding dyeing assembly, until the end of the blended fabric enters the next stage of drying and dyeing equipment. During dyeing, a stepper motor transmits power to the multi-roller padding dyeing assembly and the side belt driven mixing assembly, causing the blended fabric to undergo dyeing by the front polygonal belt co-feeding dyeing assembly and the double-roller elastic pressing structure... The multi-roller pad dyeing assembly continuously re-dyes the blended fabric through a multi-pipe spray re-dyeing assembly. A PLC control panel, electric heating elements, and temperature sensors control the dye liquor temperature in the dyeing vat until the blended fabric completes dyeing and finishing and enters the drying equipment for the next stage of dyeing and finishing. By mechanically constraining fabric movement, using edge-band movement (stirring), multi-pipe spray re-dyeing mixing, and precise small-volume temperature control, a highly controlled and efficient dyeing and finishing environment is created. This not only effectively solves the problem of dyeing fluctuations caused by differences in free movement and uneven fluid distribution in traditional open dyeing vats for blended fabrics, achieving excellent dyeing uniformity, but also, through ingenious system integration, completely eliminates the need for high-energy-consuming, high-cost, fabric-damaging, and complex-to-maintain independent stirring equipment and its auxiliary systems, significantly reducing equipment investment, operating energy consumption, and maintenance burden.

[0021] The front multi-belt co-feeding dyeing assembly and the side-belt driven mixing assembly provide precise mechanical guidance and conveying throughout the fabric's entry and passage through the dyeing vat. The fabric is forced to move along a set path and under tension, effectively preventing inconsistent immersion depths, poor unfolding (wrinkles), and fluctuations in travel speed caused by differences in fiber characteristics. Furthermore, the movement of the side-belt driven mixing assembly synchronously drives the directional and orderly flow of the surrounding dye liquor, replacing the disordered turbulence or large-scale circulation generated by traditional stirring equipment. Within the narrow channel formed by the side belt and the fabric, the dye liquor forms a relatively stable laminar flow that is coordinated with the fabric's movement direction, ensuring... It ensures a highly consistent hydrodynamic environment across different parts of the blended fabric, significantly reducing the randomness of contact time, pressure, and dye exchange frequency. This allows the dye to penetrate the fabric more evenly and effectively, significantly reducing uneven dyeing issues such as streaks and color differences. Furthermore, after leaving the dyeing zone, the fabric immediately enters a double-roller elastic pressing structure and a multi-roller padding assembly. The double-roller elastic pressing provides uniform pressure, initially squeezing out excess dye and smoothing the fabric. The multi-roller padding, through multiple pressing passes, forcefully forces the dye to penetrate evenly into the fiber interior and precisely controls the liquid carry-over rate, forming a continuous combination of "dyeing + padding" to further enhance the uniformity of dyeing.

[0022] Secondly, the traditional large-capacity static dye bath and independent powerful stirring system have been eliminated, allowing the side-belt driven mixing assembly and the multi-roller pad dyeing assembly to share the rotary power from the stepper motor. This enables the flow of dye liquor and the movement of fabric to be coordinated, resulting in higher efficiency. Finally, the multi-pipe spray dyeing assembly uses precisely arranged nozzles to directly and directionally spray fresh dye liquor with strictly controlled concentration and temperature onto the fabric surface. This immediately replenishes any dye that may be lost after immersion dyeing, prevents the accumulation of local concentration or temperature deviations, and eliminates the drawbacks of free movement of fabric and uneven dye liquor in traditional dyeing vats, achieving efficient, high-quality, and low-consumption dyeing and finishing operations. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the front cross-sectional structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0025] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0027] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 4 ;

[0028] Figure 6 This is a three-dimensional cross-sectional structural diagram of the present invention;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the front polygonal belt co-feeding type dyeing assembly in Embodiment 2 of the present invention;

[0030] Figure 8 This is a schematic diagram of the three-dimensional cross-sectional structure of the inner support frame according to Embodiment 3 of the present invention;

[0031] Figure 9 This is a schematic diagram of the three-dimensional structure of the multi-roller dyeing assembly in Embodiment 3 of the present invention;

[0032] Figure 10 This is a schematic diagram of the three-dimensional structure of the side-band type driven mixing liquid assembly in Embodiment 3 of the present invention;

[0033] Figure 11 For the present invention Figure 10 Enlarged structural diagram at point A in the middle;

[0034] Figure 12 This is a schematic diagram of the three-dimensional structure of the multi-tube spray-type re-dyeing system in Embodiment 4 of the present invention. Figure 1 ;

[0035] Figure 13 This is a schematic diagram of the three-dimensional structure of the multi-tube spray-type re-dyeing system in Embodiment 4 of the present invention. Figure 2 .

[0036] In the diagram: 1. Dyeing vat; 2. Front polygonal belt co-feeding dyeing assembly; 201. H-type long plate frame; 202. Driving side shaft; 203. Driven side shaft; 204. Guide plate; 205. Driving pulley; 206. Driven pulley; 207. Conveyor belt; 208. Longitudinal beam column; 209. Single-stage pulley drive structure; 3. Drain valve; 4. Multi-pipe spray dyeing assembly; 401. Conveyor pump; 402. Square-mouth riser; 403. Diverter pipe; 404. Nozzle; 5. Electric heating element; 6. Temperature sensor; 7. PLC control panel; 8. Inner support frame; 9. Stepper motor; 10. Multi-roll dyeing assembly; 1001. Main roll; 1002. Front traction roll; 10021. Rubber sleeve; 1003. Short shaft; 1004. Gear transmission structure; 1005. Two-stage pulley transmission structure; 1006. Rear traction roll; 1007. Three-stage pulley transmission structure; 11. Side belt driven mixing assembly; 1101. Front pulley shaft; 1102. Three-bladed agitator; 1103. Belt; 1104. Tensioner; 1105. Upper drive shaft; 1106. Four-gear speed-increasing transmission structure; 12. Neutral section; 13. Double-roll elastic pressing structure. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] Example 1, by Figures 1 to 6The present invention discloses a dyeing and finishing apparatus for blended fabrics, comprising a dyeing vat 1 with a bottom heating component, a front polygonal belt co-feeding dyeing assembly 2 installed on one side inside the dyeing vat 1, an inner support frame 8 fixed on the other side inside the dyeing vat 1, and a multi-tube spray dyeing assembly 4 installed at the top of the dyeing vat 1 between the inner support frame 8 and the front polygonal belt co-feeding dyeing assembly 2. A multi-roller padding dyeing assembly 10 is installed at the upper part inside the inner support frame 8, and side-belt type driven mixing assemblies 11 are installed on the front and rear inner walls of the inner support frame 8 below the multi-roller padding dyeing assembly 10. A gap 12 is provided for textile fabric to pass through. A double roller type elastic pressing structure 13 is installed inside the inner support frame 8 on one side of the multi-roller dyeing assembly 10. A stepper motor 9 for driving the multi-roller dyeing assembly 10 is installed on the outer wall of one side of the inner support frame 8. The multi-roller dyeing assembly 10 is connected to the side belt type driven mixing assembly 11 and the front multi-side belt type co-feeding dyeing assembly 2. A PLC control panel 7 is installed on one side of the surface of the dyeing vat 1. The output terminal of the PLC control panel 7 is electrically connected to the heating component, the stepper motor 9 and the input terminal of the multi-pipe spray type re-dyeing assembly 4 respectively.

[0039] The dyeing vat 1 serves as a dye liquor container, forming a narrow and long flow channel. Together with the side-band driven mixing assembly 11, it constrains the flow path of the dye liquor. The heating components include electric heating tubes 5 installed on both sides of the bottom of the dyeing vat 1 and a temperature sensor 6 installed on one side of the outer wall of the dyeing vat 1. The probe of the temperature sensor 6 extends into the interior of the dyeing vat 1. The input end of the electric heating tube 5 is electrically connected to the output end of the PLC control panel 7, and the output end of the temperature sensor 6 is electrically connected to the input end of the PLC control panel 7. Drain valves 3 are installed at the corners of the bottom of the dyeing vat 1 through right-angle tubes. The electric heating tube 5 has the advantages of rapid heating and stable temperature maintenance, ensuring the uniformity and controllability of the temperature during the dyeing process. The temperature sensor 6 monitors the temperature changes inside the dyeing vat in real time and feeds the data back to the PLC control panel 7, thereby realizing automatic adjustment and reducing the impact of temperature fluctuations on the dyeing quality.

[0040] The front polygonal belt co-feeding dyeing assembly 2 includes an H-shaped long plate frame 201 fixed on the inner wall of the dyeing vat 1 above the electric heating tube 5, a guide plate 204 installed on the outer wall of the H-shaped long plate frame 201 away from the inner support frame 8, and an active side shaft 202 and a driven side shaft 203 rotatably installed on the left and right outer walls of the H-shaped long plate frame 201. The multi-roller dyeing assembly 10 includes a main roller 1001 rotatably installed inside one side of the inner support frame 8, a short shaft 1003 rotatably installed on the outer wall of one side of the inner support frame 8, and a front traction roller 1002 rotatably installed inside the inner support frame 8 below the main roller 1001. A two-stage belt pulley transmission structure 1005 for power transmission is installed between the same end of the front traction roller 1002 and the short shaft 1003. A gear transmission structure 1004 for maintaining synchronous reverse rotation is installed between the short shaft 1003 and the main roller 1001.

[0041] This embodiment of a dyeing and finishing method for blended fabrics, using the aforementioned blended fabric dyeing and finishing apparatus, includes the following steps:

[0042] S101: Check the liquid level, roller status, and side belt status of dyeing tank 1. Adjust the dye liquor temperature in dyeing tank 1 according to the dyeing process requirements through PLC control panel 7, electric heating tube 5, and temperature sensor 6 to ensure that the dye liquor temperature is stable within the preset range. After confirming that it is normal, place the blended fabric roll to be dyed on the unwinding device. Manually pull the end of the fabric through the bottom of the front multi-sided belt co-feeding dyeing assembly 2 and into the gap 12 formed between the front and rear side belt driven mixing assemblies 11. After passing through the gap 12, it passes through the double roller elastic pressing structure 13 and the side belt driven mixing assembly 11 in sequence. Finally, fix the fabric head to the external take-up roller or introduce the fabric head into the drying equipment of the next dyeing and finishing process.

[0043] S102: The stepper motor 9 is started to work by controlling the PLC control panel 7. The rotation power of the stepper motor 9 is transmitted to the multi-roller dyeing assembly 10, the side belt driven mixing assembly 11, and the front multi-side belt co-feeding dyeing assembly 2. The blended fabric eliminates fabric fluctuations under the traction of the front multi-side belt co-feeding dyeing assembly 2, the multi-roller dyeing assembly 10, and the double-roller elastic pressing structure 13. The side belt driven mixing assembly 11 continues to operate, and its rotational motion generates directional fluid shear force, which drives the dye liquor to form an orderly flow along the fabric travel direction. In addition, the multi-pipe spray dyeing assembly 4 sprays fresh dye liquor with a preset temperature and concentration onto the surface of the dyed blended fabric according to the PLC instructions.

[0044] S103: After the dyed fabric leaves the liquid surface and the multi-pipe spray dyeing assembly 4, the double roller elastic pressing structure 13 first contacts the wet fabric, applies uniform and controllable pressure, initially squeezes out excess liquid and eliminates air bubbles on the fabric surface, and then the fabric enters the multi-roller pad dyeing assembly 10. The multi-roller pad dyeing assembly 10 is pressed and rolled, which strongly forces the dye liquor to penetrate deeply into the fiber.

[0045] S104: The dyed fabric is pulled by an external conveyor system and smoothly fed into the next stage of drying or color-fixing equipment.

[0046] Example 2, based on Example 1, is... Figure 7 As shown, several driving pulleys 205 and driven pulleys 206 are fixed to one end of the surfaces of the driving side shaft 202 and the driven side shaft 203, respectively. Conveyor belts 207 are fitted between the driving pulleys 205 and driven pulleys 206 in the same X-axis direction. The blended fabric passes over the side wall of the guide plate 204 and the lower surface of the H-shaped long plate frame 201, and the guide plate 204 is used to guide the blended fabric. At this time, the upper surface of the blended fabric is in contact with the lower surface of each conveyor belt 207. When the stepper motor 9 is working, the multi-roller dyeing assembly... 10 drives the active side shaft 202 to rotate through the primary belt drive structure 209. Then, the active side shaft 202 drives the driven belt pulley 206 and the driven side shaft 203 to rotate through the active belt pulley 205 and the conveyor belt 207. At this time, the conveyor belt 207 uses friction to make the blended fabric move continuously. At this time, the front polygonal belt co-feeding dyeing assembly 2 forces the blended fabric to unfold flat and feed it into the dyeing area at a uniform speed, and eliminates fabric folding, floating and speed difference from the source, ensuring consistent immersion depth and reducing random fluctuations caused by differences in fiber characteristics.

[0047] Both sides of the top of the H-shaped long plate frame 201 are rotatably mounted with longitudinal beams 208. The longitudinal beams 208 abut against several conveyor belts 207 and keep the several conveyor belts 207 in a taut state. The longitudinal beams 208 are used to press down on the conveyor belts 207 so that the conveyor belts 207 are always in a taut state, ensuring that there is sufficient friction between the lower surface of the conveyor belts 207 and the upper surface of the blended fabric.

[0048] Example 3, based on Example 2, by Figure 8 , Figure 9 , Figure 10 and Figure 11 As shown, the other end of the front traction roller 1002 is equipped with a first-stage belt drive structure 209 for driving the active side shaft 202 to rotate. After the front traction roller 1002 is driven to rotate, it drives the active side shaft 202 to rotate through the first-stage belt drive structure 209, so that the multi-roller dyeing assembly 10 and the front multi-sided belt co-feeding dyeing assembly 2 share the rotational power from the stepper motor 9.

[0049] The blended fabric passes through the gap 12 and successively passes around the front traction roller 1002, the rear traction roller 1006, the double roller type elastic pressing structure 13 and the main roller 1001, and then enters the next stage of dyeing and finishing equipment.

[0050] Rubber sleeves 10021 are fixed to both ends of the surface of the front traction roller 1002. The rubber sleeves 10021 are used to limit the left and right sides of the blended fabric to ensure stable forward movement of the fabric. The rear traction roller 1006 is rotatably installed inside the inner support frame 8 on the right side of the front traction roller 1002. A three-stage belt drive structure 1007 is installed between the rear traction roller 1006 and the front traction roller 1002. The drive shaft of the stepper motor 9 directly drives the main roller 1001 to rotate. The main roller 1001 is driven by a gear transmission structure 1004. The reverse drive short shaft 1003 rotates synchronously, and then the short shaft 1003 drives the front traction roller 1002 to rotate through the two-stage belt pulley transmission structure 1005. The front traction roller 1002 drives the rear traction roller 1006 to rotate synchronously through the three-stage belt pulley transmission structure 1007. During this process, the short shaft 1003, the front traction roller 1002, and the rear traction roller 1006 rotate in the same direction. The continuous pressing and dyeing of the double-roller elastic pressing structure 13 and the main roller 1001 ensures the uniform distribution and firm adhesion of the dye on the fabric.

[0051] The double-roller elastic pressing structure 13 includes a support rod fixed inside the inner support frame 8 on the left side of the main roll 1001, a flat folding arm fixed at both ends of the support rod surface, and a swing arm fitted on the support rod surface on one side of the flat folding arm. A tension spring is installed between the swing arm and the flat folding arm. A steel roller is rotatably installed between the two swing arms in the Y-axis direction. Since the support rod is fixed inside the inner support frame 8 on one side of the main roll 1001, and the flat folding arm is fixed at both ends of the support rod, and the flat folding arm uses the tension spring to pull the swing arm to rotate around the central axis of the support rod, the steel roller between the two swing arms continuously presses the fabric onto the main roll 1001. The steel roller and the main roll 1001 form a squeezing force on the fabric and complete the pressing, which helps the fabric to better penetrate the dye and reduce color difference. The double-roller elastic pressing structure 13 squeezes out floating dye liquid and air bubbles, reduces the subsequent dyeing load, and the elastic pressure adapts to the fabric thickness fluctuations, avoiding damage or wrinkles, and providing a flat substrate for fine rolling.

[0052] The side-belt driven mixing assembly 11 includes an upper drive shaft 1105 rotatably mounted inside the inner support frame 8, a front pulley shaft 1101 rotatably mounted on the front and rear inner walls of the inner support frame 8, and a tensioner 1104 installed inside the inner support frame 8 to the right of the front pulley shaft 1101. A belt 1103 is installed between the upper drive shaft 1105, the tensioner 1104, and the belt 1103. A three-bladed agitator 1102 is fixed to one end of the front pulley shaft 1101. A four-bladed agitator 1102 is installed between the upper drive shaft 1105 and the front traction roller 1002 for power connection. The gear speed-increasing transmission structure 1106 allows the front traction roller 1002 to continue transmitting rotational power to the two upper drive shafts 1105 while rotating. The upper drive shafts 1105 drive the front pulley shaft 1101 to rotate through the corresponding tensioner 1104 and belt 1103, thereby forcing the three-bladed agitator 1102 to rotate together with the front pulley shaft 1101. This continuously adjusts the concentration of the dye liquor, keeping the dye liquor stable throughout the dyeing process. It completely replaces independent agitation equipment, saving energy and reducing fabric damage.

[0053] Example 4, based on Example 2, by Figure 12 and Figure 13 The multi-pipe spray dyeing assembly 4 includes square-mouthed risers 402 fixed on the inner walls of the front and rear of the dyeing vat 1 above the H-shaped long plate frame 201, several diversion pipes 403 installed between two square-mouthed risers 402, and several nozzles 404 installed on the outer wall of one side of the diversion pipes 403 near the side-belt driven mixing assembly 11. A delivery pump 401 is installed on one side of the surface of the dyeing vat 1. The inlet end of the delivery pump 401 extends into the interior of the dyeing vat 1 through a pipe. The outlet end of the delivery pump 401 is connected to the inlet end of one of the square-mouthed risers 402 through a pipe. The delivery pump 401 continuously pumps the dye liquid in the dyeing vat 1 into one of the square-mouthed risers 402. Under the strong delivery of the delivery pump 401, the dye liquid enters into each diversion pipe 403 and is sprayed onto the dyed blended fabric through the diversion pipes 403. By performing secondary dyeing on the fabric, it is ensured that every part of the fabric is dyed evenly.

[0054] In this embodiment, the operator first checks the liquid level, roller status, and edge belt status of the dyeing vat 1. Based on the dyeing process requirements, the operator adjusts the dye liquor temperature in the dyeing vat 1 using the PLC control panel 7, electric heating element 5, and temperature sensor 6 to ensure the temperature remains stable within a preset range. After confirming normal operation, the blended fabric roll to be dyed is placed on the unwinding device. The fabric end is manually pulled through the lower part of the front multi-sided belt co-feeding dyeing assembly 2, entering the gap 12 formed between the front and rear side belt driven mixing assemblies 11. After passing through the gap 12, the fabric sequentially passes through the double-roller elastic pressing structure 13 and the edge belt. The driven mixing assembly 11 ultimately fixes the fabric head to the external take-up roller or introduces the fabric head into the drying equipment of the next dyeing and finishing process. The operator controls the stepper motor 9 to work according to the set direction, speed, angle, and response time via the PLC control panel 7. The rotational power of the stepper motor 9 is then transmitted to the multi-roller pad dyeing assembly 10, the side-belt driven mixing assembly 11, and the front multi-sidebelt co-feeding immersion dyeing assembly 2. Under the traction of the front multi-sidebelt co-feeding immersion dyeing assembly 2, the multi-roller pad dyeing assembly 10, and the double-roller elastic pressing structure 13, the fabric fluctuations are eliminated, and the fabric is completely immersed in the dye. The dye liquor flows uniformly through the dyeing zone. During this process, the side-band driven mixing assembly 11 continuously operates, and its rotational motion generates directional fluid shear force, causing the dye liquor to flow in an orderly manner along the fabric's direction of travel, achieving local renewal and mixing of the dye liquor. The multi-tube spray re-dyeing assembly 4, according to PLC instructions, directionally sprays fresh dye liquor of a preset temperature and concentration onto the surface of the dyed blended fabric. During the dyeing process, the electric heating tube 5, under the monitoring and feedback of the temperature sensor 6, has its heating power dynamically adjusted by the PLC control panel 7 to ensure that the temperature of the dye liquor flowing through the fabric area remains strictly constant. The dyed fabric then leaves the liquid surface, and the multi-tube spray re-dyeing process is completed. After assembly 4, the double-roller elastic pressing structure 13 first contacts the wet fabric, applying uniform and controllable pressure to initially squeeze out excess liquid and eliminate air bubbles on the fabric surface. The fabric then enters the multi-roller pad-dyeing assembly 10, where it is pressed and forced to deeply penetrate the fiber interior, precisely controlling the final liquid carry-over rate and laying the foundation for subsequent color fixing. After pad-dyeing, the fabric is pulled by an external conveying system and smoothly fed into the next stage of drying or color fixing equipment. Throughout the operation, the staff needs to adjust the device operating parameters according to the actual condition of the fabric to ensure the uniformity of dyeing and the fullness of color.

[0055] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dyeing and finishing apparatus for blended fabrics, characterized in that, include: A dyeing vat (1) with a bottom heating component is provided. A front polygonal belt co-feeding dyeing assembly (2) is installed on one side of the inside of the dyeing vat (1). An inner support frame (8) is fixed on the other side of the inside of the dyeing vat (1). A multi-pipe spray dyeing assembly (4) is installed at the top of the dyeing vat (1) between the inner support frame (8) and the front polygonal belt co-feeding dyeing assembly (2). A multi-roller pad dyeing assembly (10) is installed at the upper part of the inside of the inner support frame (8). Side belt driven mixing assembly (11) is installed on the front and rear inner walls of the inner support frame (8) below the multi-roller pad dyeing assembly (10). The multi-roller pad dyeing assembly (10), the side belt driven mixing assembly (11), and the front polygonal belt co-feeding dyeing assembly (2) are all connected by power. A gap (12) for textile fabric to pass through is provided between the two side-band driven mixing assemblies (11). A double-roller elastic pressing structure (13) is installed inside the inner support frame (8) on one side of the multi-roller dyeing assembly (10). A stepper motor (9) for driving the multi-roller dyeing assembly (10) is installed on the outer wall of one side of the inner support frame (8). A PLC control panel (7) is installed on one side of the surface of the dyeing vat (1). The output end of the PLC control panel (7) is electrically connected to the heating component, the stepper motor (9), and the input end of the multi-pipe spray dyeing assembly (4). The front polygonal belt co-feeding dyeing assembly (2) includes an H-shaped long plate frame (201) fixed on the inner wall of the dyeing vat (1) above the electric heating tube (5), a guide plate (204) installed on the outer wall of the H-shaped long plate frame (201) away from the inner support frame (8), and an active side shaft (202) and a driven side shaft (203) rotatably installed on the left and right outer walls of the H-shaped long plate frame (201). The multi-roll dyeing assembly (10) includes a main roll (1001) rotatably mounted inside one side of the inner support frame (8), a short shaft (1003) rotatably mounted on the outer wall of one side of the inner support frame (8), and a front traction roll (1002) rotatably mounted inside the inner support frame (8) below the main roll (1001). A two-stage pulley transmission structure (1005) for power transmission is installed between the same end of the front traction roll (1002) and the short shaft (1003). A gear transmission structure (1004) for maintaining synchronous reverse rotation is installed between the short shaft (1003) and the main roll (1001).

2. The dyeing and finishing apparatus for blended fabrics according to claim 1, characterized in that: The heating assembly includes electric heating tubes (5) installed on both sides of the bottom of the dyeing vat (1) and a temperature sensor (6) installed on the outer wall of one side of the dyeing vat (1). The probe of the temperature sensor (6) extends into the interior of the dyeing vat (1). The input end of the electric heating tube (5) is electrically connected to the output end of the PLC control panel (7). The output end of the temperature sensor (6) is electrically connected to the input end of the PLC control panel (7). Drain valves (3) are installed at the corners of the bottom of the dyeing vat (1) through right-angle tubes.

3. The dyeing and finishing apparatus for blended fabrics according to claim 1, characterized in that: A plurality of driving pulleys (205) and driven pulleys (206) are fixed at one end of the surface of the driving side shaft (202) and the driven side shaft (203), respectively. A conveyor belt (207) is fitted between the driving pulleys (205) and driven pulleys (206) in the same X-axis direction.

4. The dyeing and finishing apparatus for blended fabrics according to claim 3, characterized in that: The top two sides of the H-shaped long plate frame (201) are rotatably mounted with longitudinal beams (208), and the longitudinal beams (208) abut against each other with several conveyor belts (207) so that the several conveyor belts (207) are in a taut state.

5. The dyeing and finishing apparatus for blended fabrics according to claim 3, characterized in that: The other end of the front traction roller (1002) is equipped with a first-stage belt drive structure (209) for driving the rotation of the active side shaft (202).

6. The dyeing and finishing apparatus for blended fabrics according to claim 5, characterized in that: Both ends of the surface of the front traction roller (1002) are fixed with rubber sleeves (10021). The rear traction roller (1006) is rotatably installed inside the inner support frame (8) on the right side of the front traction roller (1002). A three-stage belt drive structure (1007) is installed between the rear traction roller (1006) and the front traction roller (1002).

7. The dyeing and finishing apparatus for blended fabrics according to claim 5, characterized in that: The double-roller elastic pressing structure (13) includes a support rod fixed inside the inner support frame (8) on the left side of the main roll (1001), a flat folding arm fixed at both ends of the support rod surface, and a swing arm fitted on the support rod surface on one side of the flat folding arm. A tension spring is installed between the swing arm and the flat folding arm, and a steel roller is rotatably installed between the two swing arms in the Y-axis direction.

8. The dyeing and finishing apparatus for blended fabrics according to claim 5, characterized in that: The side-belt driven mixing assembly (11) includes an upper drive shaft (1105) rotatably mounted inside the inner support frame (8), a front pulley shaft (1101) rotatably mounted on the front and rear inner walls of the inner support frame (8), and a tensioner (1104) installed inside the inner support frame (8) to the right of the front pulley shaft (1101). A belt (1103) is installed between the upper drive shaft (1105), the tensioner (1104), and the belt (1103). A three-bladed agitator (1102) is fixed at one end of the front pulley shaft (1101). A four-gear speed-increasing transmission structure (1106) for power connection is installed between the upper drive shaft (1105) and the front traction roller (1002).

9. The dyeing and finishing apparatus for blended fabrics according to claim 3, characterized in that: The multi-pipe spray dyeing assembly (4) includes a square-mouthed riser (402) fixed on the inner wall of the front and rear of the dyeing vat (1) above the H-shaped long plate frame (201), a number of diversion pipes (403) installed between the two square-mouthed risers (402), and a number of nozzles (404) installed on the outer wall of the diversion pipe (403) near the side belt driven mixing assembly (11). A delivery pump (401) is installed on one side of the surface of the dyeing vat (1). The inlet end of the delivery pump (401) extends into the interior of the dyeing vat (1) through a pipe, and the outlet end of the delivery pump (401) is connected to the inlet end of one of the square-mouthed risers (402) through a pipe.

10. A dyeing and finishing method for blended fabrics, using the blended fabric dyeing and finishing apparatus as described in any one of claims 1-9, characterized in that: Includes the following steps: S101: Check the liquid level, roller status, and side belt status of the dyeing tank (1), and adjust the dyeing liquid temperature in the dyeing tank (1) according to the dyeing process requirements through the PLC control panel (7), electric heating tube (5), and temperature sensor (6) to ensure that the dyeing liquid temperature is stable within the preset range. After confirming that it is normal, place the blended fabric roll to be dyed on the unwinding device, manually pull the end of the fabric through the bottom of the front multi-sided belt co-feeding dyeing assembly (2), and enter the gap (12) formed between the front and rear side belt driven mixing assembly (11). After passing through the gap (12), it passes through the double roller elastic pressing structure (13) and the side belt driven mixing assembly (11) in sequence, and finally fixes the fabric head to the external take-up roller or introduces the fabric head into the drying equipment of the next dyeing and finishing process. S102: The stepper motor (9) is controlled to start working through the PLC control panel (7). The rotational power of the stepper motor (9) is transmitted to the multi-roller dyeing assembly (10), the side belt driven mixing assembly (11), and the front multi-side belt co-feeding dyeing assembly (2). The blended fabric eliminates fabric fluctuations under the traction of the front multi-side belt co-feeding dyeing assembly (2), the multi-roller dyeing assembly (10), and the double-roller elastic pressing structure (13). The side belt driven mixing assembly (11) continues to operate, and its rotational motion generates directional fluid shear force, which drives the dye liquor to form an orderly flow along the fabric's direction of travel. The multi-pipe spray dyeing assembly (4) sprays fresh dye liquor with a preset temperature and concentration onto the surface of the dyed blended fabric according to the PLC instructions. S103: After the dyed fabric leaves the liquid surface and the multi-pipe spray dyeing assembly (4), the double roller elastic pressing structure (13) first contacts the wet fabric, applies uniform and controllable pressure, initially squeezes out excess liquid and eliminates air bubbles on the fabric surface, and then the fabric enters the multi-roller pad dyeing assembly (10), which performs padding and strongly forces the dye liquor to penetrate deep into the fiber. S104: The dyed fabric is pulled by an external conveyor system and smoothly fed into the next stage of drying or color-fixing equipment.

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