A high color fastness cotton fabric printing and dyeing device and its process

Abstract

This application relates to the field of cotton fabric printing and dyeing technology, and in particular to a high color fastness cotton fabric printing and dyeing apparatus and process. The high color fastness cotton fabric printing and dyeing apparatus includes a feeding roller, a receiving roller, and a dye box. Several drive rollers are arranged inside the dye box, including a driving roller and a driven roller. Both the driving roller and the driven roller are rotatably connected to the dye box. The driven rollers in the same group as the driving roller can clamp the cotton fabric in the middle. A drive assembly capable of driving the driving roller to rotate is provided on the dye box. A mounting shaft is fixedly connected to one end of the driving roller, and the mounting shaft is rotatably connected to the inner side wall of the dye box. A stirring blade is fixedly connected to the mounting shaft. This application has the effect of reducing dye sedimentation and increasing the uniformity of cotton fabric dyeing.

Description

Technical Field

[0001] This application relates to the field of cotton fabric printing and dyeing technology, and in particular to a cotton fabric printing and dyeing apparatus and process with high color fastness. Background Technology

[0002] Fabric dyeing is a relatively complex process, and the dyeing process varies depending on the quality of the fabric. This includes cotton, polyester-cotton blends, linen-cotton blends, wool fabrics, silk products, and synthetic fiber products, among others. The main methods are spray dyeing and immersion dyeing. For cotton fabrics, immersion dyeing is typically used. Immersion dyeing methods include pad dyeing, roll dyeing, and high-temperature, high-pressure dyeing. While tie-dyeing is efficient and consumes little energy, it doesn't produce good results on cotton fabrics and can easily lead to dyeing quality problems. High-temperature, high-pressure dyeing is inefficient and consumes a lot of energy. Therefore, roll dyeing is the best method for cotton fabric dyeing.

[0003] During the dyeing process, a dyeing and printing device is needed to dye the cotton fabric. The dyeing and printing device includes a dye box for storing dyeing agent, a conveying roller for conveying the cotton fabric, and a receiving roller for collecting the cotton fabric. The conveying roller sends the cotton fabric to the dye box, where it is dyed by the dyeing agent, and then the receiving roller collects the dyed cotton fabric.

[0004] During the long dyeing process, the dye in the dyeing box is basically in a static state, which can easily cause the dye to settle, resulting in uneven dyeing of the cotton fabric. Summary of the Invention

[0005] The purpose of this application is to provide a high color fastness cotton fabric printing and dyeing device and process, which can reduce the sedimentation of dyeing agents and increase the uniformity of cotton fabric dyeing.

[0006] Firstly, the high color fastness cotton fabric printing and dyeing apparatus provided in this application adopts the following technical solution:

[0007] A high color fastness cotton fabric printing and dyeing device includes a feeding roller, a receiving roller, and a dye box. The dye box is equipped with several drive rollers, each including a driving roller and a driven roller. Both the driving roller and the driven roller are rotatably connected to the dye box. The driven rollers in the same group as the driving roller can clamp the cotton fabric in the middle. The dye box is equipped with a drive assembly that can drive the driving roller to rotate. One end of the driving roller is fixedly connected to a mounting shaft, which is rotatably connected to the inner side wall of the dye box. A stirring blade is fixedly connected to the mounting shaft.

[0008] By adopting the above technical solution, by setting up active and passive rollers, the active and passive rollers clamp the cotton fabric, reducing the shaking of the cotton fabric during the printing and dyeing process. Then, by rotating the active roller, the cotton fabric is driven to move. During the rotation of the active roller, the stirring blades are also driven to rotate, so that the dyeing agent is always in motion, reducing the possibility of dyeing agent settling, and thus making the cotton fabric dyed more evenly.

[0009] Optionally, the drive rollers are arranged in a staggered manner, one above the other.

[0010] By adopting the above technical solution, the upper and lower staggered arrangement of the transmission rollers makes the cotton fabric wavy in the dye box. As the cotton fabric moves, it is stretched tighter and the movement length of the cotton fabric in the dye box is increased, thereby further improving the dyeing effect of the cotton fabric.

[0011] Optionally, the inner wall of the dye box is provided with a plurality of sliding grooves, and the plurality of sliding grooves correspond one-to-one with the positions of a plurality of driven rollers. Each driven roller can slide in the corresponding sliding groove. The driven roller above the cotton cloth can slide to be flush with the driving roller above the cotton cloth, and the driven roller below the cotton cloth can slide to be flush with the driving roller below the cotton cloth.

[0012] By adopting the above technical solution, the driven roller can slide through the chute, thereby forming two parallel rows of transmission rollers that are staggered. This makes it easier for the cotton cloth to pass through during the initial feeding process, reducing the difficulty of the initial feeding of the cotton cloth.

[0013] Optionally, the drive assembly includes a first gear, a second gear, and a connector. There are multiple second gears, and one second gear is connected to each drive roller. The first gear meshes with one of the second gears and can drive the second gear to rotate. The multiple second gears are connected in sequence through the connector and can rotate synchronously.

[0014] By adopting the above technical solution, and by setting a second gear and a connecting piece, when the first gear rotates, it drives several second gears to rotate, thereby reducing the use of multiple drive motors and saving manufacturing costs.

[0015] Optionally, the connecting member includes a third gear and a fourth gear. In the vertical direction, a third gear is provided between each adjacent second gear and they rotate synchronously through the third gear. In the horizontal direction, a fourth gear is provided between each adjacent second gear and they rotate synchronously through the fourth gear.

[0016] By adopting the above technical solution, the third and fourth gears enable several second gears to rotate synchronously and transmit power through gear meshing, making the transmission process more stable.

[0017] Optionally, a connecting rod is provided between the driving roller and the adjacent driven roller, one end of the connecting rod is connected to the driving roller, the other end of the connecting rod is fixedly connected to the driven roller, the second gear is rotatably connected to the driving roller, and a fixing member is provided between the driving roller and the second gear for fixing the second gear to the driving roller.

[0018] By adopting the above technical solution and setting a connecting rod, the driven roller can be driven to slide during the rotation of the active roller, thereby reducing the need for an additional motor to drive the driven roller to slide, reducing the need for a motor, and thus reducing manufacturing costs.

[0019] Optionally, the fixing member includes a limiting groove formed on the connecting rod and a limiting block fixedly connected to the drive roller. The limiting block can slide into the limiting groove, and the limiting block is provided with a driving member for driving the limiting block to move.

[0020] By adopting the above technical solution, the limiting block slides into the limiting groove, thereby fixing the connecting rod and the drive roller together. The structure is simple and the operation is stable, which makes it easy to manufacture and use.

[0021] Optionally, the driving component includes an electromagnet fixedly connected to the limiting block and a magnetic block fixedly connected to the limiting groove, wherein the magnetic block can be attracted by the electromagnet.

[0022] By adopting the above technical solution, the limit block can be slid by using an electromagnet to attract the magnetic block to move. The structure is simple and easy to install.

[0023] Secondly, the dyeing and printing process provided in this application adopts the following technical solution: the specific steps are as follows:

[0024] S1: Slide the driven roller above the cotton cloth until it is flush with the driving roller above the cotton cloth, and slide the driven roller below the cotton cloth until it is flush with the driven roller below the cotton cloth.

[0025] S2: Pass the cotton cloth between the upper and lower sets of driven rollers and wrap it around the take-up roller;

[0026] S3: Reset the driven roller to tighten the cotton cloth;

[0027] S4: Rotate the feed roller and drive roller to agitate the dyeing agent and perform printing and dyeing simultaneously.

[0028] By adopting the above technical solution, the cotton fabric is easily fed by moving the driven roller, and the dyeing agent is moved by agitating it, thereby reducing the settling of the dyeing agent and increasing the dyeing effect of the cotton fabric.

[0029] In summary, this application includes at least one of the following beneficial technical effects:

[0030] 1. By setting up active and passive rollers, the active and passive rollers clamp the cotton fabric, reducing the shaking of the cotton fabric during the printing and dyeing process. Then, by rotating the active roller, the cotton fabric is driven to move. During the rotation of the active roller, the stirring blades are also driven to rotate, so that the dyeing agent is always in motion, reducing the possibility of dyeing agent settling, and thus making the cotton fabric dyed more evenly.

[0031] 2. By staggering the upper and lower transmission rollers, the cotton fabric is arranged in a wave-like shape in the dye box. This makes the cotton fabric more taut and increases the length of movement of the cotton fabric in the dye box during the movement of the cotton fabric, thereby further improving the dyeing effect of the cotton fabric.

[0032] 3. By setting up the chute, the driven roller can slide, thereby forming two rows of parallel rollers with the upper and lower staggered drive rollers. This makes it easier for the cotton cloth to pass through during the initial feeding process, reducing the difficulty of the initial feeding of the cotton cloth. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of a high color fastness cotton fabric printing and dyeing device according to an embodiment of this application.

[0034] Figure 2 This is a cross-sectional structural schematic diagram of a high color fastness cotton fabric printing and dyeing apparatus according to an embodiment of this application.

[0035] Figure 3 This is a schematic diagram of the structure of a high color fastness cotton fabric printing and dyeing device with the conveyor rollers hidden, according to an embodiment of this application.

[0036] Figure 4 This is a rear view structural schematic diagram of a high color fastness cotton fabric printing and dyeing device according to an embodiment of this application.

[0037] Figure 5 yes Figure 3 A magnified view of part A in the diagram.

[0038] In the diagram, 1 represents the feeding roller;

[0039] 2. Take-up roller;

[0040] 3. Dye box; 31. Slide chute;

[0041] 4. Drive roller; 41. Driven roller; 411. First roller body; 412. First rotating shaft; 4121. Telescopic groove; 413. Mounting shaft; 414. Stirring blade; 42. Driven roller; 421. Second roller body; 422. Second rotating shaft; 423. Slider; 424. Secondary final shaft; 425. Final shaft; 43. Limiting ring;

[0042] 5. Drive assembly; 51. First gear; 52. Second gear; 53. Connector; 531. Third gear; 532. Fourth gear;

[0043] 6. Connecting rod; 61. Perforation;

[0044] 7. Transmission rod; 71. Clearance groove;

[0045] 8. Fixing component; 81. Limiting groove; 82. Limiting block; 83. Spring;

[0046] 9. Driving component; 91. Electromagnet; 92. Magnetic block. Detailed Implementation

[0047] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0048] A high color fastness cotton fabric printing and dyeing apparatus, referring to Figure 1 and Figure 2 It includes a feeding roller 1, a receiving roller 2, and a dye box 3, to... Figure 1 Taking a specific perspective, the feed roller 1 is located at the upper left corner of the dye box 3, and the take-up roller 2 is located at the upper right corner of the dye box 3. The cotton fabric starts from the feed roller 1, is dyed in the dye box 3, and the dyed cotton fabric is taken back by the take-up roller 2.

[0049] The dye box 3 is equipped with several drive rollers 4, each including a driving roller 41 and a driven roller 42. The driving rollers 41 and driven rollers 42 in the same group are arranged symmetrically downwards. In this embodiment, the drive rollers 4 are arranged in a staggered manner, and are evenly spaced in the horizontal direction. In other embodiments, the drive rollers 4 can also be arranged in parallel. Each driving roller 41 and driven roller 42 is rotatably connected to the inner wall of the dye box 3.

[0050] In this embodiment, taking the order from left to right as an example, compared with the position of the second transmission roller 4, the first transmission roller 4 is lower and the second transmission roller 4 is higher. The driving roller 41 of the first transmission roller 4 is located below the cotton cloth, and the terminal driving roller 41 of the second transmission roller 4 is located above the cotton cloth. The driven roller 42 of the first transmission roller 4 is level with the driven roller 42 of the second transmission roller 4. Compared with the position of the second transmission roller 4, the third transmission roller 4 is higher and the third transmission roller 4 is lower. The driving roller 41 of the third transmission roller 4 is located below the cotton cloth and is level with the terminal driving roller 41 of the first transmission roller 4. The driven roller 42 of the third transmission roller 4 is level with the driven roller 42 of the second transmission roller 4. The subsequent fourth transmission roller 4, fifth transmission roller 4, and so on, are arranged in the same manner as the first, second, and third transmission rollers described above.

[0051] After exiting from the feed roller 1, the cotton fabric passes sequentially through the gap between the driving roller 41 and the driven roller 42 of the same group until it is wound onto the take-up roller 2. Because the several drive rollers 4 are arranged in a staggered manner, the bending direction of the cotton fabric changes once when it passes through each drive roller 4 and enters the next drive roller 4. Since both the feed roller 1 and the take-up roller 2 are located above the dye box 3, the number of drive rollers 4 is set to an odd number, so that each drive roller 4 can stretch the cotton fabric during the transmission process.

[0052] Reference Figure 2 and Figure 3 The active roller 41 includes a first roller body 411 and a first rotating shaft 412. The first rotating shaft 412 is fixedly connected to one end of the first roller body 411, and the other end of the first roller body 411 is fixedly connected to a mounting shaft 413. The mounting shaft 413 is rotatably connected to the inner wall of the dye box 3. The first rotating shaft 412 passes through the dye box 3 and is rotatably connected to the dye box 3.

[0053] Reference Figure 1 and Figure 2 A stirring blade 414 is fixedly connected to the mounting shaft 413. When the drive roller 41 rotates, it drives the mounting shaft 413 to rotate, thereby driving the stirring blade 414 to rotate. This causes the stirring blade 414 to drive the dyeing agent in the dye box 3 to flow, thereby reducing the possibility of the dyeing agent settling in the dye box 3 and making the cotton fabric dyed more evenly.

[0054] Reference Figure 2 and Figure 3The driven roller 42 includes a second roller body 421 and a second rotating shaft 422. Each end of the second roller body 421 is fixedly connected to a second rotating shaft 422. The second rotating shaft 422, on the same side as the mounting shaft 413, is rotatably connected to the inner wall of the dye tank 3. A slider 423 is fixedly connected to the second rotating shaft 422, on the same side as the first rotating shaft 412. Each slider 423 has a groove 31 at its location. The groove 31 is formed on the inner wall of the dye tank 3, and in this embodiment, the groove 31 is arc-shaped. The roller slides within the groove 31.

[0055] Limiting rings 43 are fixedly connected to both ends of the first roller 411 and the second roller 421. The outer diameter of the limiting rings 43 is larger than the outer diameter of the first roller 411 and the second roller 421. When the cotton cloth passes over the first roller 411 and the second roller 421, the two side walls of the cotton cloth abut against the corresponding limiting rings 43, so that the limiting rings 43 restrict the lateral movement of the cotton cloth.

[0056] During the printing and dyeing process, the feeding roller 1 conveys the cotton fabric, the driving roller 41 rotates and drives the cotton fabric through friction, and the driven roller 42 rotates following the movement of the cotton fabric. After the cotton fabric is printed and dyed in the dye box 3, the receiving roller 2 collects the printed and dyed cotton fabric.

[0057] Reference Figure 2 and Figure 4 The outer wall of the dye box 3 is provided with a drive assembly 5, which can drive the active roller 41 to rotate. The drive assembly 5 includes a first gear 51, a second gear 52 and a connector 53. The first gear 51 is rotatably connected to the outer wall of the dye box 3 and is fixedly connected to the output end of the motor. The first gear 51 is driven to rotate by the motor.

[0058] Each first rotating shaft 412 extends out of the dye box 3 and is connected to one of the aforementioned second gears 52. The first gear 51 meshes with one of the second gears 52, and the several second gears 52 rotate synchronously through the connector 53.

[0059] The connector 53 includes a third gear 531 and a fourth gear 532. A third gear 531 is provided between each of two adjacent second gears 52 in the vertical direction. The third gear 531 is rotatably connected to the inner wall of the dye box 3, and both second gears 52 in the vertical direction mesh with the third gear 531, so that the two second gears 52 in the vertical direction can rotate synchronously by the drive of the third gear 531.

[0060] In this embodiment, a fourth gear 532 is provided between each of the adjacent second gears 52 in the horizontal direction. The fourth gear 532 meshes with the two adjacent second gears 52. In this embodiment, the fourth gear 532 is provided between the second gears 52 on the first rotating shaft 412 below the cotton cloth, and the fourth gear 532 is not provided between the second gears 52 on the first rotating shaft 412 above the cotton cloth. In other embodiments, the fourth gear 532 may also be provided between the second gears 52 on the first rotating shaft 412 above the cotton cloth.

[0061] When the first gear 51 rotates, it drives the second gear 52 meshing with it to rotate, thereby causing the second gear 52 to drive another second gear 52 in the vertical direction to rotate through the third gear 531 meshing with it. The other second gear 52 drives the next second gear 52 in the horizontal direction to rotate through the fourth gear 532. According to the above transmission method, the second gears 52 are driven to rotate in sequence, thereby realizing the synchronous rotation of several second gears 52, that is, the synchronous rotation of the first shaft 412 of the tow rod, causing several first rollers 411 to rotate, driving the cotton cloth to move.

[0062] Reference Figure 3 ,by Figure 3 Taking the perspective as an example, the second rotating shaft 422 on the far right above the cotton cloth is named the final shaft 425, and the second rotating shaft 422 on the cotton cloth from the right to the left is named the secondary final shaft 424. A connecting rod 6 is provided between the first rotating shaft 412 above the cotton cloth and the second rotating shaft 422 adjacent to the left, and between the first rotating shaft 412 below the cotton cloth and the second rotating shaft 422 on the right. One end of the connecting rod 6 is connected to the first rotating shaft 412, and the other end of the connecting rod 6 is fixedly connected to the second rotating shaft 422.

[0063] Because there is an odd number of drive rollers 4, no drive roller 41 is provided on the right side of the final shaft 425. All the other second rotating shafts 422 except the final shaft 425 can be driven to rotate by the first rotation on the right side through the connecting rod 6.

[0064] A transmission rod 7 is provided between the secondary final shaft 424 and the final shaft 425. One end of the transmission rod 7 is fixedly connected to the secondary final shaft 424, and the other end of the transmission rod 7 is fixedly connected to the final shaft 425. A clearance groove 71 is provided on the transmission rod 7. The clearance groove 71 is used to allow the second rotating shaft 422 between the secondary final shaft 424 and the final shaft 425 to make way.

[0065] During the rotation of the second gear 52, the first rotating shaft 412 is driven to rotate, which in turn drives the connecting rod 6 to rotate. The rotation of the connecting rod 6, in turn, drives the second rotating shaft 422 to rotate, causing the slider 423 to slide within the groove 31. During the sliding process, the secondary final shaft 424 drives the final shaft 425 to slide via the connecting rod, thereby aligning the several second rollers 421 above the cotton cloth and the several second rollers 421 below the cotton cloth on the same horizontal plane. At this point, the cotton cloth can be passed through the gap between the upper and lower rows of second rollers 421, facilitating the initial feeding of the cotton cloth.

[0066] Reference Figure 3 and Figure 5 The connecting rod 6 is rotatably connected to the first rotating shaft 412 and rotatably connected to the inner wall of the dye box 3. A fixing member 8 is provided between the connecting rod 6 and the first rotating shaft 412, and the connecting rod 6 and the first rotating shaft 412 are fixed to each other by the fixing member 8.

[0067] The connecting rod 6 has a through hole 61 at its center, through which the first rotating shaft 412 passes. The fixing member 8 includes a limiting groove 81 on the inner wall of the through hole 61 and a limiting block 82 connected to the first rotating shaft 412. There are several limiting grooves 81, which are evenly arranged around the inner wall of the through hole 61. The side wall of the first rotating shaft 412 has a telescopic groove 4121. The limiting block 82 is slidably disposed in the telescopic groove 4121. A spring 83 is provided between the limiting block 82 and the inner wall of the telescopic groove 4121. One end of the spring 83 is fixedly connected to the limiting block 82, and the other end of the spring 83 is fixedly connected to the inner wall of the telescopic groove 4121.

[0068] A driving component 9 is provided on the limiting block 82. The driving component 9 includes an electromagnet 91 and a magnetic block 92. A magnetic block 92 is fixedly connected in each limiting groove 81, and an electromagnet 91 is fixedly connected on the limiting block 82. The magnetic block 92 is made of iron. In other embodiments, the electromagnet 91 can be fixed in the limiting groove 81, and the magnetic block 92 can be fixed on the limiting block 82. When it is necessary for the connecting rod 6 to be fixed to the first rotating shaft 412, the electromagnet 91 is activated, which drives the limiting block 82 to be inserted into the limiting groove 81, thereby fixing the connecting rod 6 to the first rotating shaft 412.

[0069] The implementation principle of this application embodiment is as follows: Before feeding the cotton cloth, the electromagnet 91 is turned on so that the limiting block 82 is inserted into the limiting groove 81. At this time, the first gear 51 rotates, driving several second gears 52 to rotate, causing the first rotating shaft 412 to drive the connecting rod 6 to rotate, so that the upper second roller 421 is level with the lower second roller 421. At this time, the cotton cloth is passed between the upper and lower second rollers 421 and then wound around the take-up roller 2.

[0070] At this time, the first gear 51 reverses, driving several second rollers 421 to reset, and then the electromagnet 91 is turned off, so that the electromagnet 91 exits the limiting groove 81 under the drive of the spring 83. Then the first gear 51 is rotated again, causing the feeding roller 1 to rotate and carry out the dyeing process. During the rotation of the active roller 41, the stirring blade 414 is driven to rotate, thereby keeping the dye agent in motion and reducing the sedimentation of the dye agent.

[0071] This embodiment also discloses a dyeing and printing process, the specific steps of which are as follows:

[0072] S1: Slide the driven roller 42 above the cotton cloth to be flush with the driving roller 41 above the cotton cloth, and slide the driven roller 42 below the cotton cloth to be flush with the driven roller 42 below the cotton cloth.

[0073] S2: Pass the cotton cloth between the upper and lower sets of driven rollers 42 and wrap it around the take-up roller 2;

[0074] S3: Reset the driven roller 42 to tighten the cotton cloth;

[0075] S4: Rotate the feeding roller 1 and the drive roller 41 to agitate the dyeing agent and perform printing and dyeing simultaneously.

[0076] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A high color fastness cotton fabric printing and dyeing apparatus, comprising a feeding roller (1), a receiving roller (2), and a dye box (3), characterized in that, The dye box (3) is provided with several transmission rollers (4). The transmission rollers (4) include a drive roller (41) and a driven roller (42). The drive roller (41) and the driven roller (42) are rotatably connected to the dye box (3). The driven roller (42) in the same group as the drive roller (41) can clamp the cotton cloth in the middle. The dye box (3) is provided with a drive assembly (5) that can drive the drive roller (41) to rotate. One end of the drive roller (41) is fixedly connected to an installation shaft (413). The installation shaft (413) is rotatably connected to the inner side wall of the dye box (3). A stirring blade (414) is fixedly connected to the installation shaft (413). Several of the aforementioned transmission rollers (4) are arranged in a staggered manner, one above the other; The dye box (3) has several grooves (31) on its inner wall. The grooves (31) correspond one-to-one with the positions of several driven rollers (42). Each driven roller (42) can slide in the corresponding groove (31). The driven roller (42) above the cotton cloth can slide to be flush with the active roller (41) above the cotton cloth. The driven roller (42) below the cotton cloth can slide to be flush with the active roller (41) below the cotton cloth. A connecting rod (6) is provided between the driving roller (41) and the adjacent driven roller (42). One end of the connecting rod (6) is connected to the driving roller (41), and the other end of the connecting rod (6) is fixedly connected to the driven roller (42).

2. The high color fastness cotton fabric printing and dyeing apparatus according to claim 1, characterized in that, The drive assembly (5) includes a first gear (51), a second gear (52) and a connector (53). There are several second gears (52), and one second gear (52) is connected to each drive roller (41). The first gear (51) meshes with one of the second gears (52) and can drive the second gear (52) to rotate. Several second gears (52) are connected in sequence through the connector (53) and can rotate synchronously.

3. The high color fastness cotton fabric printing and dyeing apparatus according to claim 2, characterized in that, The connector (53) includes a third gear (531) and a fourth gear (532). In the vertical direction, each adjacent second gear (52) is provided with a third gear (531) and rotates synchronously through the third gear (531). In the horizontal direction, each adjacent second gear (52) is provided with a fourth gear (532) and rotates synchronously through the fourth gear (532).

4. The high color fastness cotton fabric printing and dyeing apparatus according to claim 3, characterized in that, The second gear (52) is rotatably connected to the drive roller (41), and a fixing member (8) is provided between the drive roller (41) and the second gear (52) for fixing the second gear (52) and the drive roller (41).

5. The high color fastness cotton fabric printing and dyeing apparatus according to claim 4, characterized in that, The fixing member (8) includes a limiting groove (81) opened on the connecting rod (6) and a limiting block (82) fixedly connected to the drive roller (41). The limiting block (82) can slide into the limiting groove (81). The limiting block (82) is provided with a driving member (9) for driving the limiting block (82) to move.

6. The high color fastness cotton fabric printing and dyeing apparatus according to claim 5, characterized in that, The driving component (9) includes an electromagnet (91) fixedly connected to the limiting block (82) and a magnetic block (92) fixedly connected to the limiting groove (81), wherein the magnetic block (92) can be attracted by the electromagnet (91).

7. A printing and dyeing process using the high color fastness cotton fabric apparatus described in claim 6, characterized in that, The specific steps are as follows: S1: Slide the driven roller (42) above the cotton cloth to be flush with the driving roller (41) above the cotton cloth, and slide the driven roller (42) below the cotton cloth to be flush with the driven roller (42) below the cotton cloth. S2: Pass the cotton cloth between the upper and lower sets of driven rollers (42) and wrap it around the take-up roller (2); S3: Reset the driven roller (42) to tighten the cotton cloth; S4: Rotate the feed roller (1) and the drive roller (41) to agitate the dyeing agent and perform printing and dyeing at the same time.

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