Dyeing method and dyeing device for knitted fabric

Abstract

The invention provides a knitted fabric dyeing method and device, and relates to the field of knitted fabric dyeing. The knitted fabric dyeing device comprises a dip dyeing pool used for dip dyeing and a spray dyeing box used for spray dyeing. According to the knitted fabric dyeing method and device, in the dip dyeing process, the fabric is stirred to swing by swinging the pushing cylinder, the effect that dye enters the fabric is improved through the swinging mode, impurities left on the surface of the fabric can be shaken off when the fabric swings, the fabric dyeing quality is further improved, and the dyeing efficiency is improved. Spiral track transmission enables multi-angle spray-dyeing to improve the spray-dyeing effect in the spray-dyeing process of the fabric, dye cannot flow in one direction of one fabric, and the dye can flow in different directions of the surface of the fabric under the action of gravity along with twisting of the fabric, so that the color of the fabric is improved. Therefore, the dye does not flow only along one position of the surface of the fabric to cause non-uniform dyeing of the fabric.

Description

Technical Field

[0001] The invention relates to the field of knitted fabric dyeing, in particular to a knitted fabric dyeing method and a dyeing device. Background Art

[0002] Knitted fabric is a fabric formed by using knitting needles to bend yarn into loops and intertwine them. The difference between knitted fabric and woven fabric is that the yarn has a different shape in the fabric. Knitted fabric needs to be dyed as needed.

[0003] The utility model patent with application number CN202122421183.2 discloses a knitted fabric dyeing device, including a dyeing box, a feeding roller, a winding roller and a dipping roller. The dyeing box includes a first side panel and a second side panel arranged opposite to each other. The dipping roller is rotatably installed between the first side panel and the second side panel. An axial cavity is provided in the dipping roller, and a partition is provided in the axial cavity. The partition divides the axial cavity into a first cavity and a second cavity. The device controls the water flow to impact the fabric by dipping, thereby improving the dyeing efficiency.

[0004] During immersion dyeing, most of the dye is adsorbed by the surface of the knitted fabric. The dye concentration of the dye that enters the interior of the knitted fabric is low after being adsorbed by the surface layer, resulting in poor dyeing effect on the inner side, especially for knitted fabrics with patterns on the surface. Due to the uneven surface thickness, the dyeing uniformity at the pattern position is crossed, affecting the dyeing quality. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a knitted fabric dyeing method and a dyeing device, which solve the problems of poor dyeing uniformity of the fabric and poor dyeing effect inside the fabric.

[0007] (II) Technical solution

[0008] To achieve the above objectives, the present invention is implemented through the following technical solutions: a knitted fabric dyeing device, comprising an immersion dyeing tank for immersion dyeing and a spray dyeing box for spray dyeing, the right side wall of the immersion dyeing tank is provided with an inlet for extending the fabric into the immersion dyeing tank, the left side wall of the immersion dyeing tank is provided with a drain pipe for discharging the dye inside the immersion dyeing tank, the inner wall of the immersion dyeing tank is provided with two transmission rollers for transmitting the fabric rotatably mounted through bearings at a position on the left side of the inlet, the front side wall of the immersion dyeing tank is provided with a transmission motor for driving the transmission roller to rotate, and the inner wall of the immersion dyeing tank near the bottom is provided with a lower support for supporting the fabric rotatably mounted through bearings. A support roller, an upper support roller for supporting the fabric is installed on the inner wall of the immersion and dyeing tank and located on the left side of the transmission roller, a swinging push roller for swinging the fabric is arranged inside the immersion and dyeing tank and located between the lower support roller and the upper support roller, a swinging drive motor for driving the swinging push roller to rotate is installed on the front side wall of the immersion and dyeing tank, a spray dyeing box is installed on the left side wall of the immersion and dyeing tank, a spray dyeing device for spraying dye on the fabric is arranged inside the spray dyeing box, a rotating device for flipping the fabric is arranged inside the spray dyeing box, and a support frame for supporting the spray dyeing box is arranged at the bottom of the spray dyeing box.

[0009] Preferably, the spray-dyeing device includes a booster pump, a transmission pipeline, an annular pipe seat and a dye nozzle, the booster pump is installed inside the immersion dyeing tank, the transmission pipeline is installed with the water outlet of the booster pump, one end of the transmission pipeline away from the booster pump extends to the rear side of the spray-dyeing box, the annular pipe seat is installed on the outside of the spray-dyeing box and is connected to the transmission pipe, and a dye nozzle for spray-dyeing is installed on the inner side of the annular pipe seat, and the inner end of the dye nozzle extends into the interior of the spray-dyeing box.

[0010] Preferably, the rotating device includes a mounting frame, a first support roller, a second support roller, a side limit bracket, a mounting seat, an extrusion roller and an extrusion transmission shaft. The mounting frame is mounted on the inner wall of the spray dyeing box through a support rod. The first support roller and the second support roller for supporting the movement of the fabric are rotatably mounted on the mounting frame through bearings respectively. The side limit bracket is mounted on the inner side wall of the mounting frame. An opening for discharging the fabric is provided at the left end of the spray dyeing box. The mounting seat is mounted on the left inner wall of the spray dyeing box and is located in front of the opening. The extrusion roller is rotatably mounted on the rear side wall of the mounting seat through a bearing. The extrusion transmission shaft is mounted on the front end of the extrusion roller. The front end of the extrusion transmission shaft passes through the spray dyeing box and extends to the front side of the spray dyeing box. An extrusion motor for driving the extrusion transmission shaft to rotate is mounted on the front side of the spray dyeing box. The front end of the extrusion transmission shaft is mounted on the output end of the extrusion motor.

[0011] Preferably, there are two squeezing rollers, and the two squeezing rollers seal the left end opening of the spray dyeing box.

[0012] Preferably, there are a plurality of installation frames, and the installation angle between adjacent installation frames is 45°.

[0013] Preferably, the end of the dye nozzle extending into the interior of the spray dye box is inclined to the left.

[0014] Preferably, a protrusion is provided on the outer wall of the swing push cylinder, two swing push cylinders form a group, the protrusions on the outer walls of the two swing push cylinders point in the same direction, and the front ends of the two swing push cylinders are driven by gear meshing.

[0015] Preferably, the spray-dye box is installed at an angle, and the height of the left end of the spray-dye box is higher than the height of the right end.

[0016] Preferably, the lower supporting rollers and the swing pushing rollers are each provided with two groups.

[0017] A dyeing method for a knitted fabric dyeing device comprises the following steps:

[0018] Step 1: Insert the fabric to be dyed into the dyeing tank through the feeding port, and then pass through the gap between the two transmission rollers, then pass to the left under the lower support roller on the right side, then pass upward between the two swing push rollers, then pass above the upper support roller, then pass downward through the gap between the two swing push rollers on the left side, then pass under the lower support roller on the left side, and finally pass upward between the two transmission rollers on the left side, completing the fabric preparation work inside the dyeing tank;

[0019] Step 2: Extend the left end of the fabric into the interior of the spray dye box, so that the fabric passes through the gap between the first support roller and the second support roller inside the spray dye box in sequence, and finally passes out from the left end of the spray dye box;

[0020] Step 3: During the dyeing process, add the dye into the dyeing tank and control the dye liquid level to be lower than the right port of the spray dyeing box;

[0021] Step 4: Start the swing drive motor to drive the swing push cylinder to rotate. The swing push cylinder rotates and drives the fabric between the lower support roller and the upper support roller to shake left and right, so that the dye can fully penetrate into the fabric for dyeing. At the same time, the transmission motor drives the transmission roller to rotate, and the transmission roller clamps the fabric and transports the dyed fabric to the left into the spray dye box. After being squeezed by the transmission roller, the fabric is transported to the spray dye box for secondary dyeing.

[0022] Step 5: The booster pump draws the fuel inside the dyeing pool into the transmission pipeline. The dye flows along the transmission pipeline and the annular pipe seat and is sprayed inward through the dye nozzle. The dye is sprayed on the inclined fabric surface so that the dye can fully dye the gap inside the surface of the knitted fabric. The fabric is twisted continuously during the transmission process. The twisting method allows the excess dye to flow evenly on the surface of the fabric to prevent the dye from flowing in one direction all the time, resulting in poor dyeing uniformity and affecting the dyeing quality. In addition, the twisted spraying of the fabric makes the spraying angle coverage of the fabric surface more comprehensive and uniform, further improving the spraying quality.

[0023] Step 6: The extrusion motor drives the extrusion roller to rotate through the extrusion transmission shaft. After spraying, the fabric is extruded to the left by the two extrusion rollers for subsequent drying and cleaning.

[0024] (III) Beneficial effects

[0025] The present invention provides a knitted fabric dyeing method and a dyeing device, which have the following beneficial effects:

[0026] 1. During the dyeing process, the fabric is swung by the swinging push cylinder, which improves the effect of the dye entering the interior of the fabric. When the fabric is swung, the impurities remaining on the surface of the fabric will be shaken off, further improving the quality of fabric dyeing.

[0027] 2. Through the cooperation of multiple installation frames, the first support roller, the second support roller and the side limit bracket, the fabric is restricted to a spiral shape. When the spiral is bent, it can also stretch the fabric. The dye can be fully immersed in the gaps of the knitted wires, so that the dye can fully contact the surface of the weaving wire, making the dyeing of the knitted fabric more uniform.

[0028] 3. The spiral trajectory transmission ensures that the dye will not flow in one direction of the fabric during the spray dyeing process. As the fabric twists, the dye will flow in different directions along the surface of the fabric under the action of gravity, so that the dye will not flow along only one position on the surface of the fabric, resulting in uneven dyeing of the fabric.

[0029] 4. During spray dyeing, high-pressure airflow and dye are sprayed onto the surface of the fabric, so that the surface of the fabric remains flat under the high-pressure blowing, and the dye nozzle is bent to the left, so that the high-pressure airflow has a force to blow the fabric to the left, so that the fabric moves up without being deformed by the pulling force of the squeezing roller alone, thereby improving the stability of the fabric movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2It is a schematic diagram of the internal structure of the dyeing tank of the present invention;

[0032] Figure 3 It is a schematic diagram of the cross-sectional structure of the spray dyeing box of the present invention;

[0033] Figure 4 This is a schematic diagram of the installation of the first support roller and the second support roller of the present invention;

[0034] Figure 5 For the present invention Figure 3 A magnified view of the structure at center;

[0035] Among them, 1. Dyeing tank; 2. Feeding port; 3. Transmission roller; 31. Transmission motor; 4. Lower support roller; 5. Upper support roller; 6. Swinging push cylinder; 61. Swinging drive motor; 7. Spraying box; 8. Spraying device; 81. Booster pump; 82. Transmission pipeline; 83. Ring pipe seat; 84. Dye nozzle; 9. Rotating device; 91. Installation frame; 92. First support roller; 93. Second support roller; 94. Side limit bracket; 95. Mounting seat; 96. Extrusion roller; 97. Extrusion drive shaft; 10. Extrusion motor; 11. Support frame; 12. Drain pipe. DETAILED DESCRIPTION

[0036] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0037] See also Figure 1-Figure 5 The present invention provides a technical solution: a knitted fabric dyeing device, comprising an immersion dyeing tank 1 for immersion dyeing and a spray dyeing box 7 for spray dyeing, a right side wall of the immersion dyeing tank 1 is provided with a feed inlet 2 for extending the fabric into the immersion dyeing tank 1, a left side wall of the immersion dyeing tank 1 is provided with a drain pipe 12 for discharging the dye inside the immersion dyeing tank 1, an inner wall of the immersion dyeing tank 1 and a position on the left side of the feed inlet 2 are provided with two transmission rollers 3 for transmitting the fabric through bearings, a front side wall of the immersion dyeing tank 1 is provided with a transmission motor 31 for driving the transmission roller 3 to rotate, and a lower support roller 4 for supporting the fabric is provided with a bearing on the inner wall near the bottom of the immersion dyeing tank 1, An upper supporting roller 5 for supporting the fabric is installed on the inner wall of the dyeing tank 1 and located on the left side of the transmission roller 3, a swinging push roller 6 for swinging the fabric is installed inside the dyeing tank 1 and located between the lower supporting roller 4 and the upper supporting roller 5, a swinging driving motor 61 for driving the swinging push roller 6 to rotate is installed on the front side wall of the dyeing tank 1, a spraying box 7 is installed on the left side wall of the dyeing tank 1, a spraying device 8 for spraying dye on the fabric is arranged inside the spraying box 7, a rotating device 9 for flipping the fabric is arranged inside the spraying box 7, and a supporting frame 11 for supporting the spraying box 7 is arranged at the bottom of the spraying box 7.

[0038] In this embodiment, the spray-dyeing device 8 includes a booster pump 81, a transmission pipe 82, an annular pipe seat 83 and a dye nozzle 84. The booster pump 81 is installed inside the immersion and dyeing tank 1, and the transmission pipe 82 is installed with the water outlet of the booster pump 81. One end of the transmission pipe 82 away from the booster pump 81 extends to the rear side of the spray-dyeing box 7. The annular pipe seat 83 is installed on the outside of the spray-dyeing box 7 and is connected to the transmission pipe 82. A dye nozzle 84 for spray-dyeing is installed on the inner side of the annular pipe seat 83, and the inner end of the dye nozzle 84 extends into the interior of the spray-dyeing box 7.

[0039] Specifically, there are several dye nozzles 84, and the gas spraying intensities of the dye nozzles 84 at different positions are different. The dye nozzles 84 are arranged in a ring, and the spraying intensity of the dye nozzles 84 far away from the installation frame 91 and the installation position of the spray box 7 is greater than the spraying intensity of the nozzles close to the installation frame 91 and the installation position of the spray box 7. By spraying with a larger spraying intensity towards the position facing the fabric, the fabric can be kept flat to prevent wrinkles.

[0040] In this embodiment, the rotating device 9 includes a mounting frame 91, a first support roller 92, a second support roller 93, a side limit bracket 94, a mounting seat 95, an extrusion roller 96 and an extrusion transmission shaft 97. The mounting frame 91 is mounted on the inner wall of the spray dyeing box 7 through a support rod. The first support roller 92 and the second support roller 93 for supporting the movement of the fabric are rotatably mounted on the mounting frame 91 through bearings respectively. The side limit bracket 94 is mounted on the inner side wall of the mounting frame 91. An opening for discharging the fabric is provided at the left end of the spray dyeing box 7. The mounting seat 95 is mounted on the left inner wall of the spray dyeing box 7 and is located at the front side of the opening. The extrusion roller 96 is rotatably mounted on the rear side wall of the mounting seat 95 through a bearing. The extrusion transmission shaft 97 is mounted on the front end of the extrusion roller 96. The front end of the extrusion transmission shaft 97 passes through the spray dyeing box 7 and extends to the front side of the spray dyeing box 7. An extrusion motor 10 for driving the extrusion transmission shaft 97 to rotate is installed on the front side of the spray dyeing box 7. The front end of the extrusion transmission shaft 97 is mounted on the output end of the extrusion motor 10.

[0041] Specifically, the fabric is spray-dyed at multiple angles by the rotating device 9, thereby improving the dyeing uniformity of the raised patterns on the fabric surface and the inside of the grooves.

[0042] In this embodiment, there are two squeezing rollers 96 , and the two squeezing rollers 96 seal the left end opening of the spray box 7 .

[0043] Specifically, the squeezing roller 96 rotates to transfer the fabric to the left, and the squeezing roller 96 squeezes the fabric to discharge excess dye from the interior of the fabric.

[0044] In this embodiment, there are a plurality of installation frames 91 , and the installation angle between adjacent installation frames 91 is 45°.

[0045] Specifically, through the cooperation of multiple installation frames 91, a first support roller 92, a second support roller 93 and a side limit bracket 94, the fabric is restricted to a spiral shape, and the spiral bending can also stretch the fabric. The dye can be fully immersed in the gaps of the knitted wires, so that the dye can fully contact the surface of the weaving wire, making the dyeing of the knitted fabric more uniform.

[0046] In this embodiment, one end of the dye spray head 84 extending into the interior of the spray box 7 is inclined to the left.

[0047] Specifically, the high-pressure airflow has a force to blow the fabric to the left, so that the fabric moves upward without being deformed by the pulling force of the squeezing roller 96 alone.

[0048] In this embodiment, a protrusion is provided on the outer wall of the swing push cylinder 6, two swing push cylinders 6 form a group, the protrusions on the outer walls of the two swing push cylinders 6 point in the same direction, and the front ends of the two swing push cylinders 6 are driven by gear meshing.

[0049] Specifically, the protrusions on the outer wall of the swinging push tube 6 push the fabric to shake, and the fabric is shaken inside the dye to improve the effect of dye solution penetrating into the fabric.

[0050] In this embodiment, the spray box 7 is installed obliquely, and the height of the left end of the spray box 7 is higher than the height of the right end.

[0051] Specifically, the excess dye inside the spray-dye box 7 is discharged rightward along the spray-dye box 7 into the inside of the dyeing tank 1 for recycling.

[0052] In this embodiment, two groups of lower supporting rollers 4 and two groups of swinging pushing rollers 6 are provided.

[0053] Specifically, the fabric is restricted to a W-shaped track by the cooperation of two groups of transmission rollers 3, a lower support roller 4 and an upper support roller 5, so that the fabric enters and removes the dye twice, and at the same time, the fabric is shaken by two swinging push rollers 6 to improve the dyeing effect.

[0054] A dyeing method for a knitted fabric dyeing device comprises the following steps:

[0055] Step 1: Insert the cloth to be dyed into the dyeing tank 1 through the feed port 2, and then pass through the gap between the two transmission rollers 3, and then pass to the left under the lower support roller 4 on the right side, and then pass upward between the two swing push cylinders 6, and then pass through the upper support roller 5 after passing through the swing push cylinder 6, and then pass downward through the gap between the two swing push cylinders 6 on the left side, and then pass under the lower support roller 4 on the left side, and finally pass upward between the two transmission rollers 3 located on the left side, to complete the cloth preparation work inside the dyeing tank 1;

[0056] Step 2: Extend the left end of the fabric into the interior of the spray dye box 7, so that the fabric passes through the gap between the first support roller 92 and the second support roller 93 inside the spray dye box 7 in sequence, and finally passes out from the left end of the spray dye box 7;

[0057] Step 3: During the dyeing process, dye is added into the dyeing tank 1, and the dye liquid level is controlled to be lower than the right port position of the spray dye box 7;

[0058] Step 4: Start the swing drive motor 61 to drive the swing push cylinder 6 to rotate. The swing push cylinder 6 rotates and drives the fabric between the lower support roller 4 and the upper support roller 5 to shake left and right, so that the dye is fully immersed into the fabric for dyeing. At the same time, the transmission motor 31 drives the transmission roller 3 to rotate, and the transmission roller 3 clamps the fabric and transports the dyed fabric to the left into the spray dye box 7. After being squeezed by the transmission roller 3, the fabric is transported to the spray dye box 7 for secondary dyeing.

[0059] Step 5: The booster pump 81 draws the fuel inside the dyeing tank 1 into the transmission pipe 82, and the dye flows along the transmission pipe 82 and the annular pipe seat 83 and is sprayed inwardly through the dye nozzle 84. By spraying the dye on the inclined fabric surface, the dye can fully dye the inside of the gap on the surface of the knitted fabric. The fabric is twisted continuously during the transmission process, and the excess dye flows evenly on the fabric surface by twisting, preventing the dye from flowing in one direction all the time, resulting in poor dyeing uniformity and affecting the dyeing quality. In addition, the twisted spraying of the fabric makes the spraying angle coverage of the fabric surface more comprehensive and uniform, further improving the spraying quality.

[0060] Step 6: The squeezing motor 10 drives the squeezing roller 96 to rotate through the squeezing transmission shaft 97. After spraying, the fabric is squeezed by the two squeezing rollers 96 and then transferred to the left for subsequent drying and cleaning.

[0061] The working principle and use process of the present invention are as follows: the cleaned and heated fabric is extended into the inside of the immersion and dyeing tank 1 through the feed port 2, and then passes through the gap between the two transmission rollers 3 and then passes to the left under the lower support roller 4 on the right side, and then passes upward between the two swing push cylinders 6, passes through the swing push cylinder 6 and then passes above the upper support roller 5, and then passes downward through the gap between the two swing push cylinders 6 on the left side and passes under the lower support roller 4 on the left side, and finally passes upward between the two transmission rollers 3 located on the left side, completing the fabric preparation work inside the immersion and dyeing tank 1, and then the left end of the fabric is extended into the inside of the spray dyeing box 7, so that The fabric passes through the gap between the first support roller 92 and the second support roller 93 inside the spray dye box 7 in turn. The fabric is restricted into a spiral shape through the cooperation of multiple groups of first support rollers 92 and second support rollers 93. When the spiral is bent, it can also stretch the fabric. Finally, it passes through between the two squeezing rollers 96 and passes out from the left end of the spray dye box 7. The dye is added to the inside of the dyeing tank 1, so that the liquid level of the dye rises to a position close to the lower right end of the spray dye box 7, and the fabric is dyed by the dye liquid. At the same time, the swing drive motor 61 is started, and the swing drive motor 61 drives the swing push cylinder 6 to rotate. The swing push cylinder 6 rotates and pushes the lower support The fabric between the support roller 4 and the upper support roller 5 is shaken left and right, and the effect of the dye entering the interior of the fabric is improved by swinging, and the impurities remaining on the surface of the fabric will be shaken off when the fabric swings. After dyeing, the fabric moves to the left to be squeezed between the two transmission rollers 3 on the left side, and the moisture absorbed by the dye inside the fabric is squeezed out to prevent the dye with low dye content from staying inside the fabric and affecting the uniformity of dyeing. It is convenient for the dye to fully penetrate into the fabric for dyeing during subsequent spray dyeing, and then the fabric is input into the interior of the spray dyeing box 7, and the dye is pressed into the fabric along the transmission pipe 82 by the booster pump 81. Inside the annular tube holder 83, the annular tube holder 83 sprays the dye onto the surface of the fabric through the dye nozzle 84, and the high-pressure airflow and the dye are sprayed onto the surface of the fabric, so that the surface of the fabric remains flat under the high-pressure blowing, and the dye nozzle 84 is bent to the left, so that the high-pressure airflow has a force to blow the fabric to the left, so that the fabric does not deform only by the pulling force of the squeezing roller 96 when moving up, and the stability of the fabric movement is improved. The fabric is dyed for the second time by multi-angle spraying. After dyeing is completed, the squeezing motor 10 drives the squeezing roller 96 to rotate through the squeezing transmission shaft 97, and the fabric moves to the left after being pressed by the squeezing roller 96.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A knitted fabric dyeing device, comprising an immersion dyeing tank (1) for immersion dyeing and a spray dyeing box (7) for spray dyeing, characterized in that: The right side wall of the dyeing tank (1) is provided with an inlet (2) for inserting the fabric into the inside of the dyeing tank (1); the left side wall of the dyeing tank (1) is provided with a drain pipe (12) for discharging the dye inside the dyeing tank (1); the inner wall of the dyeing tank (1) and located on the left side of the inlet (2) are provided with two transmission rollers (3) for transmitting the fabric rotatably mounted via bearings; the front side wall of the dyeing tank (1) is provided with a transmission motor (31) for driving the transmission rollers (3) to rotate; the inner wall of the dyeing tank (1) near the bottom is provided with a lower support roller (4) for supporting the fabric rotatably mounted via bearings; the inner wall of the dyeing tank (1) and located on the left side of the transmission roller (3) are provided with a support roller (5) for supporting the fabric; An upper supporting roller (5) for supporting the fabric, a swinging push cylinder (6) for swinging the fabric is arranged inside the dyeing tank (1) and between the lower supporting roller (4) and the upper supporting roller (5), a swinging drive motor (61) for driving the swinging push cylinder (6) to rotate is installed on the front side wall of the dyeing tank (1), a spraying box (7) is installed on the left side wall of the dyeing tank (1), a spraying device (8) for spraying dye on the fabric is arranged inside the spraying box (7), a rotating device (9) for turning the fabric is arranged inside the spraying box (7), and a support frame (11) for supporting the spraying box (7) is arranged at the bottom of the spraying box (7).

2. A knitted fabric dyeing device according to claim 1, characterized in that: The spray dyeing device (8) comprises a booster pump (81), a transmission pipeline (82), an annular pipe seat (83) and a dye spray head (84); the booster pump (81) is installed inside the dyeing tank (1); the transmission pipeline (82) is installed at the water outlet of the booster pump (81); one end of the transmission pipeline (82) away from the booster pump (81) extends to the rear side of the spray dyeing box (7); the annular pipe seat (83) is installed outside the spray dyeing box (7) and communicates with the transmission pipeline (82); a dye spray head (84) for spray dyeing is installed inside the annular pipe seat (83); the inner end of the dye spray head (84) extends into the interior of the spray dyeing box (7).

3. A knitted fabric dyeing device according to claim 1, characterized in that: The rotating device (9) comprises a mounting frame (91), a first supporting roller (92), a second supporting roller (93), a side limiting bracket (94), a mounting seat (95), an extrusion roller (96) and an extrusion transmission shaft (97); the mounting frame (91) is mounted on the inner wall of the spray-dye box (7) via a support rod; the first supporting roller (92) and the second supporting roller (93) for supporting the movement of the fabric are rotatably mounted on the mounting frame (91) via bearings; the side limiting bracket (94) is mounted on the inner wall of the mounting frame (91); the left side of the spray-dye box (7) is An opening for discharging fabric is provided at the end, the mounting seat (95) is mounted on the left inner wall of the spray dye box (7) and is located at the front side of the opening, the squeezing roller (96) is rotatably mounted on the rear side wall of the mounting seat (95) through a bearing, the squeezing transmission shaft (97) is mounted on the front end of the squeezing roller (96), the front end of the squeezing transmission shaft (97) passes through the spray dye box (7) and extends to the front side of the spray dye box (7), the front side of the spray dye box (7) is mounted with an squeezing motor (10) for driving the squeezing transmission shaft (97) to rotate, and the front end of the squeezing transmission shaft (97) is mounted on the output end of the squeezing motor (10).

4. A knitted fabric dyeing device according to claim 3, characterized in that: There are two squeezing rollers (96) in total, and the two squeezing rollers (96) seal the left end opening of the spray dyeing box (7).

5. The knitted fabric dyeing device according to claim 3, characterized in that: There are a plurality of installation frames (91), and the installation angle between adjacent installation frames (91) is 45°.

6. A knitted fabric dyeing device according to claim 2, characterized in that: The end of the dye spray head (84) extending into the interior of the spray box (7) is tilted to the left.

7. The knitted fabric dyeing device according to claim 1, characterized in that: The outer wall of the swing push cylinder (6) is provided with a protrusion, two swing push cylinders (6) form a group, the protrusions on the outer walls of the two swing push cylinders (6) point in the same direction, and the front ends of the two swing push cylinders (6) are driven by gear meshing.

8. The knitted fabric dyeing device according to claim 1, characterized in that: The spray-dye box (7) is installed in an inclined manner, and the height of the left end of the spray-dye box (7) is higher than the height of the right end.

9. The knitted fabric dyeing device according to claim 1, characterized in that: The lower support rollers (4) and the swing push rollers (6) are each provided in two groups.

10. A dyeing method for a knitted fabric dyeing device, comprising a knitted fabric dyeing device according to any one of claims 1 to 9, characterized in that: The following steps are involved: The first step is to extend the cloth to be dyed into the dyeing tank (1) through the feed inlet (2), and then pass through the gap between the two transmission rollers (3) and then pass to the left from under the lower support roller (4) on the right side, and then pass upwards between the two swing push rollers (6), and then pass through the upper side of the upper support roller (5), and then pass downwards through the gap between the two swing push rollers (6) on the left side and pass under the lower support roller (4) on the left side, and finally pass upwards between the two transmission rollers (3) on the left side, thereby completing the cloth preparation work inside the dyeing tank (1); Step 2: Extend the left end of the fabric into the interior of the spray dye box (7), so that the fabric passes through the gap between the first support roller (92) and the second support roller (93) inside the spray dye box (7) in sequence, and finally passes out from the left end of the spray dye box (7); Step 3: During the dyeing process, dye is added into the dyeing tank (1) and the dye liquid level is controlled to be lower than the right port position of the spray dye box (7); Step 4: Start the swing drive motor (61) to drive the swing push cylinder (6) to rotate. The swing push cylinder (6) rotates and drives the fabric between the lower support roller (4) and the upper support roller (5) to shake left and right, so that the dye is fully immersed in the fabric to be dyed. At the same time, the transmission motor (31) drives the transmission roller (3) to rotate. The fabric is clamped by the transmission roller (3) and the dyed fabric is transported to the left into the spray dye box (7). After being squeezed by the transmission roller (3), the fabric is transported to the spray dye box (7) for secondary dyeing. Step 5: The booster pump (81) draws the fuel in the dyeing tank (1) into the transmission pipe (82), and the dye flows along the transmission pipe (82) and the annular pipe seat (83) and is sprayed inwardly through the dye nozzle (84). The dye is sprayed on the inclined fabric surface so that the dye can fully dye the gap inside the surface of the knitted fabric. The fabric is twisted continuously during the transmission process, and the twisting method allows the excess dye to flow evenly on the fabric surface, preventing the dye from flowing in one direction all the time, resulting in poor dyeing uniformity and affecting the dyeing quality. In addition, the twisted spraying of the fabric makes the spraying angle coverage of the fabric surface more comprehensive and uniform, further improving the spraying quality. Step 6: The squeezing motor (10) drives the squeezing roller (96) to rotate through the squeezing transmission shaft (97), and the fabric after spraying is squeezed by the two squeezing rollers (96) and then transmitted to the left for subsequent drying and cleaning.

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