One-bath one-step dyeing device and dyeing process based on cashmere blended fabric

Abstract

The invention relates to the technical field of cashmere blended fabric dyeing, and discloses a one-bath one-step dyeing device and process based on cashmere blended fabric, comprising a dye vat, a dye barrel arranged on one side of the dye vat, a circulating pump arranged on one side of the dye barrel, a heating device fixedly mounted above the circulating pump, and a nozzle fixedly mounted in the dye vat; according to the dyeing device, the motor is used for driving the cloth lifting roller to rotate, the magnetic beads are limited through the limiting rings of different sizes, when the pressure borne by the cloth lifting roller is in different ranges, the magnetic beads can be clamped in the different limiting rings, and when the downward sliding distance of the cloth lifting roller is larger, the magnetic beads can be clamped in the different limiting rings. If the fabric is heavier, the content of the brewed protein fibers in the raw materials is higher, the tensile property of the fabric is better, and the power of the motor is controlled to be increased by the corresponding induction plate, so that the fabric can smoothly move in the dye vat, the fabric is prevented from being stacked, and meanwhile, the fabric is not deformed or wrinkled.

Description

Technical Field

[0001] This invention relates to the field of cashmere blended fabric dyeing technology, specifically to a one-bath, one-step dyeing apparatus and dyeing process for cashmere blended fabrics. Background Technology

[0002] Brewing protein fiber and cashmere blended fabrics are generally produced by dyeing the two raw materials separately before blending and spinning. The advantage of this process is that dyeing the brewing protein fiber and cashmere separately solves the problem of uneven coloring that easily occurs when dyeing blended fabrics in the same bath. The disadvantage is that the dyeing process followed by spinning results in a long production cycle, which cannot meet the personalized, customized, and small-batch rapid delivery needs of high-end customers. If a method of blending and spinning before weaving is adopted, and fabric is dyed using additives such as leveling agents, glacial acetic acid, and wool reactive dyes, the problem of uneven coloring caused by the different dyeing rates of the two raw materials can be solved. This approach can maximize product delivery time, meet the personalized, customized, small-batch, and rapid delivery needs of high-end customers, and further enhance the market competitiveness of brewing protein fiber and cashmere blended fabrics.

[0003] Fabrics require different functions in different scenarios, and the raw material ratio of the fabric will vary depending on actual needs and economic considerations. When the ratio of brewed protein fiber to cashmere fiber in the fabric changes, the tensile strength of the fabric will also change. When the proportion of brewed protein fiber is higher, the tensile strength of the fabric is better, while when the proportion of cashmere fiber is higher, the tensile strength of the fabric is worse. Existing dyeing machines sew the fabric into a closed loop at the end and drive the fabric to move continuously in the dyeing machine through the cooperation of the fabric lifting roller and the water flow from the nozzle, so as to make it dye evenly. During the rapid rotation of the fabric lifting roller, the fabric will be stretched. If the tensile strength of the fabric is poor, it may be overstretched and deformed, and wrinkles may form on the fabric, affecting the final shape and performance of the fabric. It may also cause the fabric to pile up and block in the dyeing machine. Therefore, we propose a one-bath one-step dyeing device and dyeing process for cashmere blended fabrics. Summary of the Invention

[0004] The purpose of this invention is to provide a one-bath, one-step dyeing apparatus and dyeing process for cashmere blended fabrics, in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a one-bath, one-step dyeing device for cashmere blended fabrics, comprising a dyeing vat, a guide frame for conveying fabric fixedly installed at the front end of the dyeing vat, a dye cylinder provided on one side of the dyeing vat, a circulation pump for circulating dye liquor within the dyeing vat provided on one side of the dye cylinder, a heating device for heating the dye liquor fixedly installed above the circulation pump, a nozzle for pushing fabric and dye liquor fixedly installed inside the dyeing vat, a fabric guide pipe provided below the nozzle, the two ends of the fabric guide pipe being connected to the beginning and end of the dyeing vat respectively, and a fabric lifting roller for lifting the fabric in the dyeing vat into the nozzle provided above the nozzle; A motor for driving the fabric lifting roller is fixedly installed on the dyeing vat. Slider blocks are rotatably installed at both ends of the fabric lifting roller. Two limiting plates are symmetrically fixedly installed on the outer walls of both sides of the dyeing vat. A guide strip for limiting the slider is fixedly installed on one side of each limiting plate. An elastic rod is fixedly connected between each slider and the outer wall of the dyeing vat. Magnetic beads are fixedly installed on both sides of each slider. A groove for limiting the magnetic beads is provided on one side of each limiting plate. Several limiting rings for limiting the magnetic beads are fixedly installed on the inner wall of each groove. The radius and depth of the limiting rings gradually increase from top to bottom. Each limiting ring is made of elastic material, and an induction plate for adjusting the motor power is fixedly installed inside it. The induction plate and the magnetic beads are magnetically attracted to each other.

[0006] Preferably, the nozzle includes an outer cylinder, an upper guide plate, and a lower guide plate. The upper guide plate is fixedly installed on the upper end of the outer cylinder, and the lower guide plate is slidably installed inside the outer cylinder. An annular dye liquor flow channel is formed between the outer wall of the lower guide plate and the inner wall of the outer cylinder, and the dye liquor flow channel is connected to the outlet of the heating device. A sealing strip is fixedly installed at the bottom of the lower guide plate. Both the upper and lower guide plates are funnel-shaped, and the lower end of the upper guide plate is fitted inside the upper end of the lower guide plate. An annular spray groove is formed between the lower end of the upper guide plate and the upper end of the lower guide plate.

[0007] Preferably, one end of the fabric lifting roller is provided with a synchronously rotating turntable, the turntable is provided with a plurality of centrifugal grooves, each centrifugal block is slidably installed in each centrifugal groove, each centrifugal block is fixedly connected to the inner wall of the centrifugal groove with a spring, and an arc-shaped plate pushed by the centrifugal blocks is provided on one side of the turntable, and a connecting rope is fixedly connected between the arc-shaped plate and the lower guide plate.

[0008] Preferably, a telescopic rod is fixedly connected between one side of the arc-shaped plate and the outer wall of the dyeing vat, and several elastic strips are fixedly connected between the lower guide plate and the inner wall of the bottom of the outer cylinder, wherein the elastic force of the telescopic rod is greater than the elastic force of all the elastic strips.

[0009] Preferably, the guide pipe is connected to a branch pipe with a diameter smaller than that of the fabric. A sleeve is rotatably installed at the end of the branch pipe. A spiral plate for rotating under the thrust of water flow is fixedly installed on the inner wall of the sleeve. A feeding roller for lifting the fabric in the guide pipe into the dyeing vat is fixedly installed on the outer wall of the sleeve. The feeding roller is located at the end of the dyeing vat where it connects with the guide pipe.

[0010] Preferably, the feeding roller is fixedly equipped with a plurality of feeding plates for increasing friction with the fabric, the feeding plates are arranged in a circle, and the feeding roller is provided with a plurality of outlet holes for discharging dye liquor from the sleeve, each outlet hole being connected to the sleeve.

[0011] Preferably, a plurality of cylinders are fixedly installed on the dyeing vat, and a fixing strip is fixedly installed at the output end of each cylinder. Two magnetic blocks are symmetrically and laterally slidably installed on each fixing strip. The two magnetic blocks are magnetically attracted to each other. A material-pulling rod for spreading the fabric is fixedly installed at the lower end of each magnetic block. Guide rods are fixedly installed on both sides of each magnetic block. A plurality of fixing plates are fixedly installed on the inner wall of the top of the dyeing vat. Two guide grooves for limiting the guide rods are symmetrically arranged on each fixing plate. The guide grooves correspond one-to-one with the guide rods.

[0012] Preferably, a pulley is fixedly installed at the output end of the motor, a transmission wheel is provided at one end of the fabric lifting roller, a transmission belt is installed between the transmission wheel and the pulley, and several flexible belts are fixedly connected between the transmission wheel and the fabric lifting roller.

[0013] Preferably, both ends of the fabric roller are fixedly fitted with sealing rings made of elastic material, and the outer ring of each sealing ring is fixedly installed on the dyeing vat.

[0014] A dyeing process based on a one-bath, one-step dyeing apparatus for cashmere blended fabrics specifically includes the following steps: S1. Pre-treatment of the fabric before dyeing: Clean the fabric with a professional detergent to facilitate subsequent dyeing. After cleaning with the detergent, rinse the fabric to remove residue. S2. The pre-treated fabric is conveyed to the dyeing vat through the guide frame, and the fabric is sewn to form a closed loop. Then, the dye and additives are added to the dyeing cylinder in a certain proportion. After setting the dyeing temperature and dyeing time, the equipment is started. S3. The circulating pump draws the dye liquor from the dye cylinder into the heating device for heating. The heated dye liquor is then transported to the nozzle and discharged from the spray tank, pushing the fabric into the guide tube for circulation. Simultaneously, the motor drives the lifting roller to rotate, conveying the fabric in the dye cylinder downwards. The weight of the fabric presses the lifting roller downwards, causing the slider and magnetic beads to slide downwards along the chute according to the fabric weight. When the pressure on the lifting roller is within different ranges, the magnetic beads can be stuck in different limit rings. The corresponding induction plate adjusts the motor power and the speed of the lifting roller, ensuring smooth fabric conveying and preventing accumulation without excessive stretching and deformation. The motor drives the lifting roller to rotate synchronously with the turntable. The centrifugal block is pushed by centrifugal force against the arc plate, and the elastic strip pulls the guide plate towards... The size of the spray tank is adjusted according to the rotation speed of the fabric lifting roller. The fabric conveying speed of the nozzle is consistent with that of the fabric lifting roller, so that too much dye liquid will be sprayed out and cause excessive stretching of the fabric. At the same time, the dye liquid will form a vortex under the guidance of the spiral plate and drive the sleeve and the feeding roller to rotate. The feeding plate on the feeding roller will pull the fabric in the guide tube into the dyeing vat. The cylinder reciprocates and extends, pushing the two material-pulling rods to move vertically downward into the dye liquid. Then, while moving downward, they move in the opposite direction to unfold the fabric. This prevents the fabric from being soaked in the dyeing vat for a long time after the fabric movement speed slows down, which would result in heavy floating dye on the fabric surface and cause color difference between the inside and outside of the fabric. After the cylinder retracts, the magnetic attraction between the magnetic blocks will drive the material-pulling rods to move relative to each other and return to the initial state. S4. After dyeing, open the seams of the fabric and take the fabric out again through the guide rack. Then, wash the fabric with soap to remove the surface dye and rinse it again. S5. After dyeing, the fabric undergoes a post-processing treatment to fix the color and prevent it from fading.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention utilizes a motor to drive a fabric lifting roller to rotate, conveying the fabric downwards within the dyeing vat. Magnetic beads are limited by different sized limiting rings, ensuring that the magnetic beads are secured within different limiting rings when the pressure on the lifting roller varies. Furthermore, due to the magnetic attraction between the induction plate and the magnetic beads, the beads are less prone to wobbling. A greater downward sliding distance of the lifting roller indicates a heavier fabric, a higher content of brewing protein fibers in the raw material, and better tensile strength. The corresponding induction plate will control the motor power to increase, allowing the fabric to move smoothly within the dyeing vat, preventing fabric accumulation, deformation, or wrinkles. Conversely, a shorter downward sliding distance indicates a higher content of cashmere fibers in the raw material, resulting in poorer tensile strength. The motor power will be reduced to prevent excessive stretching and deformation of the fabric caused by excessively high roller speeds. 2. This invention utilizes a motor to drive the fabric lifting roller and turntable to rotate. The centrifugal block, subjected to centrifugal force, overcomes the spring force and moves outward from the turntable, pushing the arc-shaped plate away from the turntable. The arc-shaped plate drives one end of the connecting rope to move closer to the lower guide plate. The elastic strip pulls the lower guide plate downward, thus enlarging the spray tank to a certain extent. When the fabric has better tensile strength, the motor power is greater, the turntable speed is faster, the lower guide plate moves downward a greater distance, and the spray tank is correspondingly larger, resulting in more dye being sprayed. This ensures that the fabric conveying speed of the nozzle is consistent with the fabric conveying speed of the fabric lifting roller, preventing fabric accumulation. Conversely, if the fabric has poor tensile strength, the spray tank is correspondingly smaller, preventing the spraying of too much dye from causing excessive stretching of the fabric and preventing fabric deformation. 3. This invention utilizes a spiral plate to guide the dye liquor, causing the dye liquor to form a vortex and drive the sleeve and feeding roller to rotate. The feeding plate on the feeding roller pulls the fabric in the guide tube into the dyeing vat, preventing the fabric from accumulating in the guide tube and causing blockage due to the reduced thrust on the fabric after the nozzle flow rate decreases. At the same time, the speed of the feeding roller is controlled by the flow rate of the dye liquor. When more dye liquor is sprayed from the nozzle, the speed of the feeding roller increases accordingly, which can promptly guide the fabric out. When the flow rate of the dye liquor is slower, the speed of the feeding roller decreases accordingly to prevent additional stretching of the fabric and deformation. During the rotation of the feeding roller, the dye liquor discharged through the outlet hole can lubricate the feeding plate and the fabric, preventing excessive friction between the feeding plate and the fabric and excessive stretching of the fabric. 4. This invention utilizes a cylinder to push the fixing strip, magnetic block, and material-pulling rod downwards. The guide rod moves along the vertical groove at the upper end of the inclined groove into the inclined groove. After the two material-pulling rods move vertically downwards into the dye bath, they move downwards while simultaneously moving in opposite directions to unfold the fabric. This prevents the fabric from slowing down and being soaked in the dye bath for too long, which would result in a heavier floating color on the fabric surface and cause color differences between the inside and outside of the fabric. Because the ends of the material-pulling rods are designed with smooth arcs and the fabric is unfolded in the dye bath, there is sufficient lubrication between the material-pulling rods and the fabric, preventing the fabric from getting stuck, stretching, or getting blocked. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the dyeing vat of the present invention; Figure 3 This is a schematic diagram of the rope structure of the present invention; Figure 4 This is an enlarged schematic diagram of the structure of region A in this invention; Figure 5 This is a schematic diagram of the transmission wheel structure of the present invention; Figure 6 This is a schematic diagram of the fabric lifting roller structure of the present invention; Figure 7 This is an enlarged schematic diagram of the structure of region B in this invention; Figure 8 This is a schematic diagram of the internal structure of the nozzle of the present invention; Figure 9 This is a schematic diagram of the feeding roller structure of the present invention; Figure 10 This is a schematic diagram of the internal structure of the sleeve of the present invention; Figure 11 This is a schematic diagram of the magnetic block structure of the present invention; Figure 12 This is a schematic diagram of the guide groove structure of the present invention.

[0017] In the diagram: 1. Dyeing vat; 2. Guide rack; 3. Dye cylinder; 4. Circulating pump; 5. Heating device; 6. Nozzle; 7. Guide tube; 8. Lifting roller; 9. Motor; 10. Pulley; 11. Drive wheel; 12. Drive belt; 13. Flexible belt; 14. Slider; 15. Limiting plate; 16. Guide bar; 17. Elastic rod; 18. Magnetic bead; 19. Slide groove; 20. Limiting ring; 21. Induction plate; 22. Upper guide plate; 23. Lower guide plate; 24. Outer cylinder; 25. 26. Spray tank; 27. Elastic strip; 28. Turntable; 29. ​​Centrifuge tank; 30. Spring; 31. Centrifuge block; 32. Arc plate; 33. Telescopic rod; 34. Connecting rope; 35. Branch pipe; 36. Sleeve; 37. Feeding roller; 38. Spiral plate; 39. Feeding plate; 40. Liquid outlet; 41. Cylinder; 42. Fixing strip; 43. Magnetic block; 44. Feeding rod; 45. Guide rod; 46. Fixing plate; 47. Guide groove; 48. Sealing ring; 49. Sealing strip. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-12This invention provides a technical solution: a one-bath, one-step dyeing device for cashmere blended fabrics, comprising a dyeing vat 1, a guide frame 2 for conveying fabric fixedly installed at the front end of the dyeing vat 1, a dye cylinder 3 arranged on one side of the dyeing vat 1, a circulation pump 4 for circulating the dye liquor within the dyeing vat 1 arranged on one side of the dye cylinder 3, a heating device 5 for heating the dye liquor fixedly installed above the circulation pump 4, a nozzle 6 for pushing the fabric and dye liquor fixedly installed inside the dyeing vat 1, a guide pipe 7 arranged below the nozzle 6, the two ends of the guide pipe 7 being connected to the beginning and end of the dyeing vat 1 respectively, a lifting roller 8 for lifting the fabric from the dyeing vat 1 into the nozzle 6 arranged above the nozzle 6, a motor 9 for driving the lifting roller 8 to rotate fixedly installed on the dyeing vat 1, a pulley 10 fixedly installed at the output end of the motor 9, a transmission wheel 11 arranged at one end of the lifting roller 8, a transmission belt 12 for transmission between the transmission wheel 11 and the pulley 10, and several flexible belts 13 fixedly connected between the transmission wheel 11 and the lifting roller 8. Both ends of the fabric lifting roller 8 are rotatably mounted with sliders 14. Two limiting plates 15 are symmetrically fixedly installed on the outer walls of both sides of the dyeing vat 1. Each limiting plate 15 has a guide strip 16 fixedly installed on one side to limit the slider 14. Each slider 14 is fixedly connected to the outer wall of the dyeing vat 1 by an elastic rod 17. Magnetic beads 18 are fixedly installed on both sides of each slider 14. Each limiting plate 15 has a groove 19 on one side to limit the magnetic beads 18. Several limiting rings 20 for limiting the magnetic beads 18 are fixedly installed on the inner wall of each groove 19. The radius and depth of each limiting ring 20 gradually increase from top to bottom. Each limiting ring 20 is made of elastic material, and an induction plate 21 for adjusting the power of the motor 9 is fixedly installed inside it. The induction plate 21 and the magnetic beads 18 are magnetically attracted. Both ends of the fabric lifting roller 8 are fixedly mounted with sealing rings 47 made of elastic material. The outer ring of each sealing ring 47 is fixedly installed on the dyeing vat 1. (See attached diagram) Figure 5As shown, when motor 9 is working, it drives pulley 10 to rotate. Through transmission belt 12, it drives transmission wheel 11 to rotate. Through the connection of flexible belt 13, it drives lifting roller 8 to rotate. Even if lifting roller 8 and transmission wheel 11 are not on the same axis, they can still achieve good transmission, conveying the fabric in dyeing vat 1 downwards. When the ratio of brewed protein fiber to cashmere fiber in the fabric changes, the fabric's weight and water absorption rate will also change accordingly. Although cashmere fiber has good moisture absorption, brewed protein fiber has a higher weight, and the fabric... When the content of brewed protein fiber is high, the fabric's weight after moisture absorption is greater than when the proportion of cashmere fiber is high. Therefore, the fabric's weight after moisture absorption is directly proportional to the content of brewed protein fiber. The weight of the fabric presses the lifting roller 8 downwards. The guide strip 16 limits the slider 14, causing the lifting roller 8 to drive the slider 14 and magnetic bead 18 to slide downwards along the groove 19 according to the weight of the fabric. The sealing ring 47 deforms accordingly to prevent dyeing liquid from splashing out. Since the radius and depth of the limiting ring 20 gradually increase from top to bottom, As the magnetic bead 18 moves downwards, the resistance provided by the corresponding limiting ring 20 increases. By limiting the magnetic bead 18 with different sized limiting rings 20, the magnetic bead 18 can be stuck within different limiting rings 20 when the pressure on the fabric lifting roller 8 is within different ranges. Furthermore, due to the magnetic attraction between the sensing plate 21 and the magnetic bead 18, the magnetic bead 18 is less prone to wobbling due to the magnetic attraction of the sensing plate 21, preventing the fabric lifting roller 8 from continuously wobbling up and down when the fabric weight changes within a certain range. Simultaneously, the greater the downward sliding distance of the fabric lifting roller 8... This indicates that the heavier the fabric, the higher the content of brewed protein fibers in the raw materials, and the better the tensile strength of the fabric. The corresponding induction plate 21 will control the motor 9 to increase its power, so that the fabric can move smoothly in the dyeing vat 1, preventing the fabric from piling up and causing the fabric to deform or wrinkle. Similarly, when the lifting roller 8 moves downward a short distance, it indicates that the cashmere fiber content in the raw materials is high and the tensile strength of the fabric is poor. The power of the motor 9 will be reduced to prevent the lifting roller 8 from rotating too fast, which would cause the fabric to be overstretched and deformed.

[0020] The nozzle 6 includes an outer cylinder 24, an upper guide plate 22, and a lower guide plate 23. The upper guide plate 22 is fixedly installed on the upper end of the outer cylinder 24, and the lower guide plate 23 is slidably installed inside the outer cylinder 24. An annular dye liquor flow channel is formed between the outer wall of the lower guide plate 23 and the inner wall of the outer cylinder 24, and this dye liquor flow channel is connected to the outlet of the heating device 5. A sealing strip 48 is fixedly installed at the bottom of the lower guide plate 23. Through the obstruction of the sealing strip 48, the dye liquor output by the heating device 5 cannot be directly discharged from the bottom of the outer cylinder 24. Both the upper guide plate 22 and the lower guide plate 23 are funnel-shaped, and the lower end of the upper guide plate 22 is fitted inside the upper end of the lower guide plate 23. An annular spray groove 25 is formed between the lower end of the upper guide plate 22 and the upper end of the lower guide plate 23. The fabric lifting roller 8... A synchronously rotating turntable 27 is provided at one end, and several centrifugal tanks 28 are provided on the turntable 27. A centrifugal block 30 is slidably installed in each centrifugal tank 28. A spring 29 is fixedly connected between each centrifugal block 30 and the inner wall of the centrifugal tank 28. An arc-shaped plate 31 pushed by the centrifugal block 30 is provided on one side of the turntable 27. A connecting rope 33 is fixedly connected between the arc-shaped plate 31 and the lower guide plate 23. A telescopic rod 32 is fixedly connected between one side of the arc-shaped plate 31 and the outer wall of the dyeing vat 1. Several elastic strips 26 are fixedly connected between the lower guide plate 23 and the bottom inner wall of the outer cylinder 24. The elastic force of the telescopic rod 32 is greater than the elastic force of all the elastic strips 26. In the initial state, because the elastic force of the telescopic rod 32 is greater than the elastic force of all the elastic strips 26, the telescopic rod 32... The arc-shaped plate 31 pulls the connecting rope 33, which in turn pulls the lower guide plate 23 upward, causing the elastic strip 26 to lengthen. This reduces the distance between the upper end of the lower guide plate 23 and the lower end of the upper guide plate 22, and the spray tank 25 shrinks accordingly. When the motor 9 is running, it drives the lifting roller 8 to rotate synchronously with the turntable 27. As the turntable 27 rotates, the centrifugal block 30 is subjected to centrifugal force, which overcomes the elastic force of the spring 29 and moves outward from the turntable 27. The centrifugal block 30 pushes the arc-shaped plate 31 away from the turntable 27 and compresses the telescopic rod 32. The arc-shaped plate 31 drives one end of the connecting rope 33 to move closer to the lower guide plate 23. The elastic force of the elastic strip 26 pulls the lower guide plate 23 downward until the connecting rope 33 is taut again, thus allowing the spray tank 25 to achieve a certain degree of tension. The amplitude is amplified because the power of motor 9 is adjusted according to the tensile strength of the fabric. When the tensile strength of the fabric is better, the power of motor 9 is greater, the speed of turntable 27 is faster, the centrifugal force on centrifugal block 30 is greater, the movement distance of arc plate 31 is greater, the downward movement distance of lower guide plate 23 is greater, and the spray tank 25 is correspondingly larger, resulting in more dye being sprayed. This ensures that the fabric conveying speed of nozzle 6 is consistent with the fabric conveying speed of lifting roller 8, preventing fabric accumulation. Conversely, if the tensile strength of the fabric is poor, the power of motor 9 is smaller, the speed of turntable 27 is lower, the movement distance of centrifugal block 30 pushing arc plate 31 is smaller, and the spray tank 25 is correspondingly smaller, preventing the spraying of too much dye that would cause excessive stretching of the fabric and preventing fabric deformation.

[0021] A branch pipe 34 with a diameter smaller than the fabric is connected to the guide pipe 7 to prevent the fabric from getting stuck in the branch pipe 34. A sleeve 35 is rotatably installed at the end of the branch pipe 34. A spiral plate 37 is fixedly installed on the inner wall of the sleeve 35 to rotate it under the thrust of the water flow. A feeding roller 36 for lifting the fabric in the guide pipe 7 into the dyeing vat 1 is fixedly installed on the outer wall of the sleeve 35. The feeding roller 36 is located at the end of the dyeing vat 1 where it connects with the guide pipe 7. Several feeding plates 38 for increasing friction with the fabric are fixedly installed on the feeding roller 36. The feeding plates 38 are arranged in a circle. Several outlet holes 39 are provided on the feeding roller 36 to discharge the dye liquor in the sleeve 35. Each outlet hole 39 is connected to the sleeve 35. After the dye liquor flows into the sleeve 35 through the branch pipe 34, it will form a vortex under the guidance of the spiral plate 37 and drive the sleeve 35 and the feeding roller 36. As the feed roller 36 rotates, the feed plate 38 on the feed roller 36 pulls the fabric in the guide tube 7 into the dyeing vat 1. This prevents the fabric from accumulating in the guide tube 7 and causing blockage due to the reduced thrust on the fabric after the flow rate of the nozzle 6 decreases. At the same time, the rotation speed of the feed roller 36 is controlled by the flow rate of the dye liquor. When the nozzle 6 sprays out more dye liquor, the rotation speed of the feed roller 36 increases accordingly, so that the fabric can be discharged in time. When the flow rate of the dye liquor is slower, the rotation speed of the feed roller 36 decreases accordingly, so as to prevent the fabric from being stretched and deformed. During the rotation of the feed roller 36, the dye liquor in the sleeve 35 will be discharged through the outlet hole 39. The dye liquor discharged through the outlet hole 39 can lubricate the feed plate 38 and the fabric, preventing excessive friction between the feed plate 38 and the fabric and excessive stretching of the fabric. At the same time, the rotating dye liquor being thrown out can increase the flow rate of the dye liquor in the dyeing vat 1 and improve the uniformity of the dye liquor.

[0022] Several cylinders 40 are fixedly installed on the dyeing vat 1. Each cylinder 40 has a fixed strip 41 fixedly installed at its output end. Two magnetic blocks 42 are symmetrically and laterally slidably installed on each fixed strip 41, attracting each other magnetically. A material-pulling rod 43 for spreading the fabric is fixedly installed at the lower end of each magnetic block 42. Guide rods 44 are fixedly installed on both sides of each magnetic block 42. Several fixed plates 45 are fixedly installed on the inner wall of the top of the dyeing vat 1. Each fixed plate 45 has two symmetrically arranged guide grooves 46 for limiting the guide rods 44. The guide grooves 46 correspond one-to-one with the guide rods 44. In the initial state, as shown in the attached... Figure 11As shown, the two magnetic blocks 42 attract each other, causing the material-pulling rods 43 to move relative to each other, closing the two material-pulling rods 43. Simultaneously, the guide rod 44 moves along the uppermost horizontal groove of the guide groove 46 to above the initial end of the inclined groove. During the extension of the cylinder 40, it pushes the fixing strip 41, the magnetic blocks 42, and the material-pulling rods 43 downwards. The guide rod 44 moves along the upper vertical groove of the inclined groove into the inclined groove. After the two material-pulling rods 43 move vertically downwards into the dye bath, they move downwards while simultaneously moving in opposite directions to unfold the fabric. This prevents the fabric from slowing down and immersing in the dye bath 1 for too long, which would result in a heavier surface dye and color difference between the inside and outside of the fabric. Because the ends of the material-pulling rods 43 are designed with a smooth surface… The cylinder 40 is in a smooth, arc shape and spreads the fabric in the dye bath. The material-pulling rod 43 is sufficiently lubricated with the fabric, preventing it from getting stuck, stretching, or getting clogged. After the cylinder 40 extends, the guide rod 44 moves to the lowest point at the end of the inclined groove. Then, when the cylinder 40 retracts upward, the guide rod 44 moves upward along the vertical groove of the guide groove 46. The material-pulling rod 43 will not pull on the fabric. After the cylinder 40 retracts, the guide rod 44 moves to the point where the vertical groove and the horizontal groove of the guide groove 46 connect. Then, the magnetic attraction between the magnetic blocks 42 will cause the material-pulling rod 43 to move relative to each other and return to its initial state. The repeated extension and retraction of the cylinder 40 can continuously spread the fabric, making the dyeing of the fabric more uniform inside and out and preventing color spots.

[0023] Specifically, the pre-treated fabric is conveyed to the dyeing vat 1 via the guide frame 2, and the fabric is sewn together to form a closed loop. Then, dye and additives are added to the dye cylinder 3 in a certain proportion. The equipment is then started, and the circulating pump 4 draws the dye liquor from the dye cylinder 3 into the heating device 4 for heating. The heated dye liquor is then conveyed to the nozzle 6 and discharged from the spray tank 25, pushing the fabric into the guide tube for circulation. At the same time, the motor 9 drives the lifting roller 8 to rotate, conveying the fabric in the dyeing vat 1 downwards. The weight of the fabric presses the lifting roller 8 downwards, causing the lifting roller 8 to drive the slider 14 and magnetic bead 18 to slide downwards along the chute 19 according to the weight of the fabric. The sealing ring 47 deforms accordingly to prevent the dye liquor from splashing out. When the pressure on the lifting roller 8 is within different ranges, the magnetic bead 18 can... When the magnetic bead 18 is properly positioned within different limit rings 20, it is less prone to wobbling due to the magnetic attraction of the induction plate 21. A greater downward sliding distance of the lifting roller 8 indicates a heavier fabric, a higher content of brewing protein fibers in the raw material, and better tensile strength. Correspondingly, the induction plate 21 will control the motor 9 to increase its power, allowing the fabric to move smoothly within the dyeing vat 1 and preventing fabric accumulation. Conversely, a shorter downward sliding distance of the lifting roller 8 indicates a higher content of cashmere fibers in the raw material and poorer tensile strength. The motor 9 will then reduce its power to prevent excessive stretching and deformation of the fabric caused by excessive rotation of the lifting roller 8. When the motor 9 is operating, it will drive the lifting roller 8 to rotate synchronously with the turntable 27. The centrifugal block 30 will be subjected to centrifugal force and move outward from the turntable 27, pushing the arc-shaped plate. 31 moves away from turntable 27. The arc plate 31 drives one end of the connecting rope 33 towards the downward guide plate 23. The elastic strip 26 pulls the guide plate 23 downward until the connecting rope 33 is taut again, causing the spray tank 25 to be enlarged to a certain extent. When the fabric has better tensile strength, the motor 9 has greater power, the turntable 27 rotates faster, the centrifugal force on the centrifugal block 30 is greater, the arc plate 31 moves a greater distance, the lower guide plate 23 moves a greater distance downward, and the spray tank 25 is correspondingly larger, resulting in more dye sprayed. This makes the fabric conveying speed of the nozzle 6 consistent with the fabric conveying speed of the lifting roller 8. Conversely, if the fabric has poor tensile strength, the motor 9 has lower power, the turntable 27 rotates slower, and the centrifugal block 30 pushes the arc plate 31 a greater distance. The spray tank 25 is also relatively small, so it will not spray out too much dye liquid and cause excessive stretching of the fabric. After the dye liquid flows into the sleeve 35 through the branch pipe 34, it will form a vortex under the guidance of the spiral plate 37 and drive the sleeve 35 and the feeding roller 36 to rotate. The feeding plate 38 on the feeding roller 36 will pull the fabric in the guide pipe 7 into the dyeing vat 1. When the nozzle 6 sprays out more dye liquid, the speed of the feeding roller 36 will increase accordingly to promptly guide the fabric out. When the dye liquid flow rate is slow, the speed of the feeding roller 36 will decrease accordingly to prevent additional stretching of the fabric and deformation. During the extension of the cylinder 40, it will push the fixing bar 41, the magnetic block 42 and the material-pulling rod 43 downward. The guide rod 44 will move along the vertical groove at the upper end of the inclined groove into the inclined groove.After the two feeding rods 43 move vertically downwards into the dye bath, they simultaneously move downwards and in the opposite direction to spread the fabric. This prevents the fabric from slowing down and remaining immersed in the dye vat 1 for too long, which could result in a heavier layer of dye floating on the surface and cause color differences between the inside and outside of the fabric. After the cylinder 40 extends completely, the guide rod 44 moves to the lowest point of the inclined tank. Then, as the cylinder 40 retracts upwards, the guide rod 44 moves upwards along the vertical tank of the guide groove 46. After the cylinder 40 retracts completely, the guide rod 44 moves to the point where the vertical tank and the horizontal tank of the guide groove 46 connect. Then, the magnetic attraction between the magnetic blocks 42 will cause them to drive the feeding rods 43 to move relative to each other and return to their initial state.

[0024] A dyeing process based on a one-bath, one-step dyeing apparatus for cashmere blended fabrics specifically includes the following steps: S1. Pre-treatment of the fabric before dyeing: Clean the fabric with a professional detergent to facilitate subsequent dyeing. After cleaning with the detergent, rinse the fabric to remove residue. S2. The pre-treated fabric is conveyed to the dyeing vat 1 through the guide frame 2, and the fabric is sewn to form a closed loop. Then, the dye and additives are added to the dye cylinder 3 in a certain proportion. After setting the dyeing temperature and dyeing time, the equipment is started. S3. The circulating pump 4 draws the dye liquor from the dye cylinder 3 into the heating device 4 for heating. The heated dye liquor is then transported to the nozzle 6 and discharged from the spray tank 25, pushing the fabric into the guide tube for circulation. Simultaneously, the motor 9 drives the lifting roller 8 to rotate, conveying the fabric in the dye cylinder 1 downwards. The weight of the fabric presses the lifting roller 8 downwards. The lifting roller 8, according to the weight of the fabric, drives the slider 14 and the magnetic bead 18 to slide downwards along the slide groove 19. When the pressure on the lifting roller 8 is within different ranges, the magnetic bead 18 can be stuck in different limit rings 20. The corresponding sensing plate 21 adjusts the power of the motor 9, adjusting the speed of the lifting roller 8 to smoothly convey the fabric and prevent accumulation without causing excessive stretching and deformation. The motor 9 drives the lifting roller 8 to rotate synchronously with the turntable 27. The centrifugal block 30 is pushed by centrifugal force to the arc plate 31, and the elastic strip 26 pulls the guide tube downwards. The flow plate 23 moves downward, and the size of the spray tank 25 is adjusted according to the rotation speed of the fabric lifting roller 8. The fabric conveying speed of the nozzle 6 is consistent with the fabric conveying speed of the fabric lifting roller 8, so that more dye liquid will be sprayed out and cause greater stretching of the fabric. At the same time, the dye liquid will form a vortex under the guidance of the spiral plate 37 and drive the sleeve 35 and the feeding roller 36 to rotate. The feeding plate 38 on the feeding roller 36 will pull the fabric in the guide tube 7 into the dyeing vat 1. The cylinder 40 reciprocates and extends, pushing the two material-pulling rods 43 to move vertically downward into the dye liquid. While moving downward, they move in the opposite direction to unfold the fabric. This prevents the fabric from being soaked in the dyeing vat 1 for a long time after the movement speed of the fabric slows down, resulting in heavy floating dye on the surface of the fabric and causing color difference between the inside and outside of the fabric. After the cylinder 40 retracts, the magnetic attraction between the magnetic blocks 42 will drive the material-pulling rods 43 to move relative to each other and return to the initial state. S4. After dyeing, the sewn parts of the fabric are opened and the fabric is taken out again through the guide rack 2. Then the fabric is soaped to remove the surface dye and rinsed again. S5. After dyeing, the fabric undergoes a post-processing treatment to fix the color and prevent it from fading.

[0025] 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.

[0026] 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 one-bath, one-step dyeing apparatus for cashmere blended fabrics, comprising a dyeing vat (1), characterized in that: A guide frame (2) for conveying fabric is fixedly installed at the front end of the dyeing vat (1). A dye cylinder (3) is provided on one side of the dyeing vat (1). A circulation pump (4) for circulating dye liquor in the dyeing vat (1) is provided on one side of the dye cylinder (3). A heating device (5) for heating dye liquor is fixedly installed above the circulation pump (4). A nozzle (6) for pushing fabric and dye liquor is fixedly installed inside the dyeing vat (1). A guide pipe (7) is provided below the nozzle (6). The two ends of the guide pipe (7) are connected to the beginning and end of the dyeing vat (1). A lifting roller (8) for lifting fabric in the dyeing vat (1) into the nozzle (6) is provided above the nozzle (6). A motor (9) for driving the fabric lifting roller (8) to rotate is fixedly installed on the dyeing vat (1). Slider (14) is rotatably installed at both ends of the fabric lifting roller (8). Two limiting plates (15) are symmetrically fixedly installed on the outer walls of both sides of the dyeing vat (1). A guide strip (16) for limiting the slider (14) is fixedly installed on one side of each limiting plate (15). An elastic rod (17) is fixedly connected between each slider (14) and the outer wall of the dyeing vat (1). Magnetic beads (18) are fixedly installed on both sides of each slider (14). Each of the limiting plates (15) is provided with a groove (19) for limiting the magnetic bead (18) on one side. Several limiting rings (20) for limiting the magnetic bead (18) are fixedly installed on the inner wall of each groove (19). The radius of the limiting rings (20) gradually increases from top to bottom, and the depth gradually increases. Each limiting ring (20) is made of elastic material, and an induction plate (21) for adjusting the power of the motor (9) is fixedly installed inside it. The induction plate (21) and the magnetic bead (18) are magnetically attracted to each other.

2. The dyeing apparatus for cashmere blended fabrics in a one-bath, one-step process according to claim 1, characterized in that: The nozzle (6) includes an outer cylinder (24), an upper guide plate (22), and a lower guide plate (23). The upper guide plate (22) is fixedly installed on the upper end of the outer cylinder (24), and the lower guide plate (23) is slidably installed inside the outer cylinder (24). An annular dye liquid flow channel is formed between the outer wall of the lower guide plate (23) and the inner wall of the outer cylinder (24), and the dye liquid flow channel is connected to the outlet of the heating device (5). A sealing strip (48) is fixedly installed at the bottom of the lower guide plate (23). The upper guide plate (22) and the lower guide plate (23) are both funnel-shaped, and the lower end of the upper guide plate (22) is sleeved inside the upper end of the lower guide plate (23). An annular spray groove (25) is formed between the lower end of the upper guide plate (22) and the upper end of the lower guide plate (23).

3. The dyeing apparatus for cashmere blended fabrics in a one-bath, one-step process according to claim 2, characterized in that: One end of the fabric roller (8) is provided with a synchronously rotating turntable (27). The turntable (27) is provided with a number of centrifugal grooves (28). Each centrifugal groove (28) is slidably installed with a centrifugal block (30). Each centrifugal block (30) is fixedly connected to the inner wall of the centrifugal groove (28) with a spring (29). An arc plate (31) is provided on one side of the turntable (27) and is pushed by the centrifugal block (30). The arc plate (31) is fixedly connected to the lower guide plate (23) with a connecting rope (33).

4. The dyeing apparatus for cashmere blended fabrics in a one-bath, one-step process according to claim 3, characterized in that: A telescopic rod (32) is fixedly connected between one side of the arc plate (31) and the outer wall of the dyeing vat (1). Several elastic strips (26) are fixedly connected between the lower guide plate (23) and the bottom inner wall of the outer cylinder (24). The elastic force of the telescopic rod (32) is greater than the elastic force of all the elastic strips (26).

5. The dyeing apparatus for cashmere blended fabrics in a one-bath, one-step process according to claim 4, characterized in that: The guide pipe (7) is connected to a branch pipe (34) with a diameter smaller than that of the fabric. A sleeve (35) is rotatably installed at the end of the branch pipe (34). A spiral plate (37) for rotating under the thrust of water flow is fixedly installed on the inner wall of the sleeve (35). A feeding roller (36) for lifting the fabric in the guide pipe (7) into the dyeing vat (1) is fixedly installed on the outer wall of the sleeve (35). The feeding roller (36) is located at the end of the dyeing vat (1) where it connects to the guide pipe (7).

6. The dyeing apparatus for cashmere blended fabrics in a one-bath, one-step process according to claim 5, characterized in that: The feeding roller (36) is fixedly equipped with several feeding plates (38) for increasing friction with the fabric. The feeding plates (38) are arranged in a circle. The feeding roller (36) is provided with several outlet holes (39) for draining the dye liquor from the sleeve (35). Each outlet hole (39) is connected to the sleeve (35).

7. The dyeing apparatus for cashmere blended fabrics in a one-bath, one-step process according to claim 6, characterized in that: Several cylinders (40) are fixedly installed on the dyeing vat (1). Each cylinder (40) has a fixed strip (41) fixedly installed at its output end. Each fixed strip (41) has two magnetic blocks (42) symmetrically and laterally slidably installed on it. The two magnetic blocks (42) are magnetically attracted to each other. Each magnetic block (42) has a material-pulling rod (43) fixedly installed at its lower end for spreading the fabric. Each magnetic block (42) has a guide rod (44) fixedly installed on both sides. Several fixed plates (45) are fixedly installed on the inner wall of the top of the dyeing vat (1). Each fixed plate (45) has two guide grooves (46) symmetrically arranged on it for limiting the guide rods (44). The guide grooves (46) correspond one-to-one with the guide rods (44).

8. The dyeing apparatus for cashmere blended fabrics in a one-bath, one-step process according to claim 7, characterized in that: The output end of the motor (9) is fixedly installed with a pulley (10), and one end of the fabric lifting roller (8) is provided with a transmission wheel (11). A transmission belt (12) is installed between the transmission wheel (11) and the pulley (10). Several flexible belts (13) are fixedly connected between the transmission wheel (11) and the fabric lifting roller (8).

9. The dyeing apparatus for cashmere blended fabrics in a one-bath, one-step process according to claim 8, characterized in that: Both ends of the fabric roller (8) are fixedly installed with sealing rings (47) made of elastic material, and the outer ring of each sealing ring (47) is fixedly installed on the dyeing vat (1).

10. A dyeing process based on a one-bath, one-step dyeing apparatus for cashmere blended fabrics, characterized in that: The dyeing process using the one-bath, one-step dyeing apparatus for cashmere blended fabrics as described in claim 9 specifically includes the following steps: S1. Pre-treatment of the fabric before dyeing: Clean the fabric with a professional detergent to facilitate subsequent dyeing. After cleaning with the detergent, rinse the fabric to remove residue. S2. The pre-treated fabric is transported to the dyeing vat (1) through the guide frame (2), and the fabric is sewn to form a closed loop. Then, the dye and additives are added to the dye cylinder (3) in a certain proportion. The dyeing temperature and dyeing time are set and the equipment is started. S3. The circulating pump (4) draws the dye liquor in the dye cylinder (3) into the heating device (4) for heating. The heated dye liquor is then transported to the nozzle (6) and discharged from the spray tank (25), pushing the fabric into the guide tube for circulation. At the same time, the motor (9) drives the lifting roller (8) to rotate, conveying the fabric in the dye cylinder (1) downwards. The weight of the fabric presses the lifting roller (8) downwards. The lifting roller (8) drives the slider (14) and the magnetic bead (18) downwards along the chute (19) according to the weight of the fabric. When the pressure on the fabric lifting roller (8) is within different ranges, the magnetic bead (18) can be stuck in different limit rings (20). The corresponding sensing plate (21) adjusts the power of the motor (9) and adjusts the speed of the fabric lifting roller (8). This ensures smooth fabric transport and prevents accumulation without causing excessive stretching or deformation of the fabric. The motor (9) drives the fabric lifting roller (8) to rotate synchronously with the turntable (27). The centrifugal block (30) will be pushed by centrifugal force against the arc plate (31) and the elastic strip (26). Under the elastic pull, the guide plate (23) moves downward. The size of the spray tank (25) is adjusted according to the rotation speed of the fabric lifting roller (8). The fabric conveying speed of the nozzle (6) is consistent with the fabric conveying speed of the fabric lifting roller (8), so that more dye liquid will be sprayed out and cause greater stretching to the fabric. At the same time, the dye liquid will form a vortex under the guidance of the spiral plate (37) and drive the sleeve (35) and the feeding roller (36) to rotate. The feeding plate (38) on the feeding roller (36) will pull the fabric in the guide tube (7) into the dyeing vat (1). The cylinder (40) moves back and forth, pushing the two material-pulling rods (43) to move vertically downwards into the dye solution. While moving downwards, it moves in the opposite direction to unfold the fabric. This prevents the fabric from being soaked in the dye vat (1) for a long time after the movement speed slows down, which would result in a heavier floating color on the fabric surface and cause a color difference between the inside and outside of the fabric. After the cylinder (40) retracts, the magnetic attraction between the magnetic blocks (42) will cause it to drive the material-pulling rods (43) to move relative to each other and return to the initial state. S4. After dyeing, the sewn parts of the fabric are opened and the fabric is taken out again through the guide rack (2). Then the fabric is soaped to remove the surface dye and rinsed again. S5. After dyeing, the fabric undergoes a post-processing treatment to fix the color and prevent it from fading.

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