Pad dyeing machine and cloth dyeing process using the same

Abstract

The present application relates to a roller dyeing machine and a fabric dyeing process using the roller dyeing machine, which includes a frame and a dyeing trough, wherein the dyeing trough is connected to the bottom of the frame, the top of the dyeing trough is open and a first conveyor belt and a second conveyor belt are arranged in the dyeing trough, the first conveyor belt and the second conveyor belt are both inclined and spaced to form a gap for removing impurities, brush strips are distributed on the surface of the first conveyor belt and the surface of the second conveyor belt, the length direction of the brush strip is consistent with the length direction of the dyeing trough, one end of the first conveyor belt and the second conveyor belt is close to the top opening of the dyeing trough, the other end of the first conveyor belt and the second conveyor belt is toward the bottom of the dyeing trough, and the conveying directions of the first conveyor belt and the second conveyor belt are opposite. The present application has the following effects: it can reduce color block impurities on the fabric during dyeing to improve the quality of the fabric after roller dyeing.

Description

Technical Field

[0001] The present application relates to the field of cloth dyeing equipment, and in particular to a pad dyeing machine and a cloth dyeing process using the pad dyeing machine. Background Art

[0002] Pad dyeing is a dyeing method in which the fabric is immersed in dye solution and then subjected to roller pressure to make the dye solution penetrate the fabric and remove the remaining liquid. The pad dyeing method is to briefly immerse the fabric in the dye solution in the dye tank, and then use rollers to press the dye solution into the gaps in the fabric, and remove the excess dye solution, so that the dye is evenly distributed on the fabric.

[0003] The Chinese utility model with application number CN202223083338.7 discloses a roller mechanism for textile printing and dyeing, including a frame, the frame including a base, the upper surface of the base is provided with a support frame, the inner side of the support frame is movably connected with a connecting roller, the surface of the connecting roller is fixedly connected with a pressing roller, the surface of the supporting frame is provided with a first motor, and the connecting roller and the output end of the first motor are fixedly connected. The utility model can realize the position movement of the moving block on the surface of the screw by the rotation of the screw, and then the connecting roller will drive the pressing roller to move under the action of the moving block, so that the position of the pressing roller can be moved, and then the spacing between the two groups of pressing rollers can be changed, so that the pressing roller can be adjusted according to the thickness of the textile cloth, so as to facilitate the pressing of textile cloths of different thicknesses.

[0004] When the cloth is immersed in the dye tank, the lint and impurities on the surface of the cloth will be brought into the dye tank. After the lint, impurities and dye solution are mixed, they will easily form color block impurities. The color block impurities will easily adhere to the cloth. After the cloth is rolled by the roller, the color block impurities will solidify on the cloth, causing the quality of the cloth to deteriorate. Summary of the invention

[0005] In order to reduce color block impurities on fabric during dyeing and improve the quality of fabric after pad dyeing, the present application provides a pad dyeing machine and a fabric dyeing process using the pad dyeing machine.

[0006] In the first aspect, the present application provides a pad dyeing machine, which adopts the following technical solution:

[0007] A roller dyeing machine comprises a frame and a dyeing trough, wherein the dyeing trough is connected to the bottom of the frame, the top of the dyeing trough is opened and a first conveyor belt and a second conveyor belt are arranged in the dyeing trough, the first conveyor belt and the second conveyor belt are both inclined and spaced to form a debris removal gap, brush strips are distributed on the surface of the first conveyor belt and the surface of the second conveyor belt, the length direction of the brush strip is consistent with the length direction of the dyeing trough, one end of the first conveyor belt and the second conveyor belt are close to the top opening of the dyeing trough, and the other end of the first conveyor belt and the second conveyor belt are facing the bottom of the dyeing trough, the first conveyor belt and the second conveyor belt have opposite conveying directions and the brush strip is used to brush fabric along one end of the debris removal gap close to the top opening of the dyeing trough to one end of the debris removal gap close to the bottom of the dyeing trough.

[0008] By adopting the above technical scheme, the cloth is transported into the dyeing tank for dyeing. After the cloth is colored in the dyeing tank, it passes through the impurity removal gap and is then output from the dyeing tank. When the cloth passes through the impurity removal gap, the first conveyor belt and the second conveyor belt drive the brush bar, and the brush bar on the first conveyor belt and the second conveyor belt can brush both sides of the cloth respectively. The cloth is transported from the bottom of the dyeing tank to the top of the dyeing tank, and the brush bar brushes the cloth from the top of the dyeing tank to the bottom of the dyeing tank, and impurities such as color blocks on both sides of the cloth can be brushed off, thereby improving the quality of the cloth after roller dyeing.

[0009] Preferably, a first guide roller and a second guide roller are provided in the dyeing trough, and the length directions of the first guide roller and the second guide roller are arranged along the width direction of the cloth, the first guide roller and the second guide roller are spaced to form a cloth guiding gap, and the cloth passes through the cloth guiding gap and the impurity removing gap in sequence, and a first lifting member is provided in the dyeing trough, and the first guide roller and the second guide roller are both connected to the first lifting member, and the first lifting member is used to move the first guide roller and the second guide roller in the vertical direction.

[0010] By adopting the above technical solution, after the cloth enters the dyeing tank, it first passes through the cloth guiding gap and then passes through the impurity removing gap. The first lifting member can lift the first guide roller and the second guide roller. The first guide roller and the second guide roller can drive the cloth to shake when moving in the vertical direction, so as to avoid color block impurities adhering to the cloth as much as possible. When color block impurities are adhering to the cloth, the cloth can be shaken off by shaking, so as to reduce the color block impurities on the cloth.

[0011] Preferably, a rotating block and a motor are provided in the dyeing tank, one end of the first guide roller and the second guide roller are connected to the rotating block, the rotating block is connected to the output shaft of the motor, and the motor housing is connected to the first lifting member.

[0012] By adopting the above technical solution, when the lifting member lifts the first guide roller and the second guide roller, the motor can drive the rotating block to rotate, and the rotating block can drive the first guide roller and the second guide roller to rotate, which can increase the amplitude of the cloth shaking and avoid color blocks and impurities adhering to the cloth as much as possible.

[0013] Preferably, the first guide roller is located above the second guide roller, the first lifting member includes a cylinder, a first arc plate and a second arc plate, the first arc plate is connected to the top of the first guide roller and the concave arc side faces the top opening of the dyeing trough, the second arc plate is connected to the bottom of the second guide roller and the concave arc side faces the bottom of the dyeing trough, the piston rod of the cylinder is arranged in the vertical direction and the end is connected to the motor housing.

[0014] By adopting the above technical scheme, the cylinder moves the motor in the vertical direction, and the first guide roller and the second guide roller drive the first curved plate and the second curved plate to rise and fall when they are lifted and lowered, and the first guide roller and the second guide roller drive the first curved plate and the second curved plate to rotate when they rotate. The first curved plate and the second curved plate move in the dye tank to drive the dye liquid to shake, and the dye liquid can be shaken out of the dye tank, and impurities such as lint floating on the top of the dye liquid generated after the cloth enters the dye tank can be discharged, thereby reducing impurities such as lint in the dye tank, and further reducing the generation of color block impurities in the dye tank.

[0015] Preferably, sliding grooves are provided on the inner walls at both ends of the dyeing trough along the length direction, and the length direction of the sliding grooves is distributed along the vertical direction. The motor housing is slidingly connected to one of the sliding grooves, and a moving block is slidingly connected in the other sliding groove. The first guide roller and the second guide roller are connected to a disc at the end away from the motor, and one side of the disc is rotatably connected to the moving block through a rotating rod.

[0016] By adopting the above technical solution, when the cylinder moves the motor in the vertical direction, the motor slides in the sliding groove. After the first guide roller and the second guide roller are connected to the disc at one end away from the cylinder, the disc is connected to the moving block through the rotating rod, and the moving block slides in the sliding groove on the other side. The sliding groove can play a guiding role and reduce the force applied to the cylinder in the non-vertical direction.

[0017] Preferably, a recycling box is provided at the bottom of the frame, the top of the recycling box is opened, the dyeing trough is located in the recycling box, the outer wall of the dyeing trough and the inner wall of the recycling box are spaced apart and connected to each other through a filter membrane, and the connection end of the filter membrane, the dyeing trough and the recycling box is higher than the middle part of the filter membrane.

[0018] By adopting the above technical solution, when the first curved plate and the second curved plate move in the dyeing tank, the dye liquid is shaken out of the dyeing tank, and the recovery box can collect the shaken dye liquid. The shaken dye liquid is filtered through the filter membrane and then enters the recovery box, so that impurities in the dye liquid can be filtered, and then the filtered dye liquid can be collected. After the dye liquid is filtered, the impurities are collected in the middle of the filter membrane, which can be easily cleaned.

[0019] Preferably, the filter membrane is annular, a first magnetic ring is connected to the inner ring side of the filter membrane, a second magnetic ring is connected to the outer ring side of the filter membrane, the first magnetic ring is detachably connected to the outer wall of the dyeing tank through a fixing part, and the second magnetic ring is sucked into the inner wall of the recovery box.

[0020] By adopting the above technical solution, the staff can install the first magnetic ring on the outer wall of the dyeing tank or remove it from the outer wall of the dyeing tank through the fixing parts, and the second magnetic ring is sucked into the inner wall of the recovery box, which can facilitate the removal and installation of the second magnetic ring, thereby facilitating the removal and installation of the filter membrane and the cleaning of impurities on the filter membrane.

[0021] Preferably, the recovery box is connected to a feeding cylinder via a feeding pipe, and the feeding cylinder is used to transport dye solution reagent to the recovery box. The bottom of the recovery box is connected to a return pipe, and the return pipe is connected to the bottom of the dye tank via a delivery pump. The feeding pipe and the return pipe are both connected to a switch valve.

[0022] By adopting the above technical solution, the delivery pump can deliver the dye liquid in the recovery box back to the dye tank, and the amount of dye liquid in the dye tank can be maintained within a certain range. When the dye liquid concentration in the dye tank decreases, the feeding cylinder can deliver the dye liquid reagent to the recovery box through the feeding pipe, and the dye liquid concentration in the dye tank can be maintained within a certain range.

[0023] Preferably, the dyeing trough is connected to a second lifting member, and the second lifting member moves the dyeing trough in a vertical direction.

[0024] By adopting the above technical solution, the second lifting member can lift the dye trough. When the dye trough rises, it drives the first magnetic ring to move. The movement of the first magnetic ring drives the filter membrane to be tensioned, which can drive the second magnetic ring to move on the inner wall of the recovery box. When the second magnetic ring moves to the edge of the top opening of the recovery box, the dye liquid shaken out of the dye trough can wash away the impurities on the filter membrane, and the impurities on the filter membrane can be discharged from the top opening of the recovery box along the filter membrane, thereby facilitating the cleaning of the impurities on the filter membrane.

[0025] In the second aspect, the present application provides a cloth dyeing process, which adopts the following technical solution:

[0026] S1. Singeing: singe the excess fluff on the fabric;

[0027] S2, desizing: desizing the singed fabric;

[0028] S3, scouring: scouring the fabric to remove the impurities remaining on the fabric;

[0029] S4, bleaching: bleach the fabric to remove pigments;

[0030] S5, dyeing: the bleached fabric is subjected to pad dyeing and coloring by means of the above-mentioned pad dyeing machine;

[0031] S6. Shaping: shaping the dyed fabric.

[0032] By adopting the above technical scheme, the cloth is first singed to reduce excess fluff on the surface, and then the cloth is desized. The desized cloth is scour to reduce impurities on the cloth, and then the cloth is bleached to remove pigments. The bleached cloth is dyed by a pad dyeing machine, and the dyed cloth is fixed by a fixing machine to improve the quality of the cloth.

[0033] In summary, the present application includes at least one of the following beneficial technical effects:

[0034] 1. The fabric is transported into the dyeing tank for dyeing. After being colored in the dyeing tank, the fabric passes through the impurity removal gap and then is discharged from the dyeing tank. When the fabric passes through the impurity removal gap, the first conveyor belt and the second conveyor belt drive the brush bar. The brush bar on the first conveyor belt and the second conveyor belt can brush the two sides of the fabric respectively. The fabric is transported from the bottom of the dyeing tank to the top of the dyeing tank, and the brush bar brushes the fabric from the top of the dyeing tank to the bottom of the dyeing tank. Impurities such as color blocks on both sides of the fabric can be brushed off, thereby improving the quality of the fabric after pad dyeing;

[0035] 2. After the cloth enters the dyeing tank, it first passes through the cloth guide gap and then passes through the impurity removal gap. The first lifting member can lift the first guide roller and the second guide roller. The first guide roller and the second guide roller can drive the cloth to shake when moving in the vertical direction, which can avoid the color impurities on the cloth as much as possible. When the color impurities are attached to the cloth, the cloth can be shaken off by shaking, which can reduce the color impurities on the cloth;

[0036] 3. The second lifting member can lift the dye trough. When the dye trough rises, it drives the first magnetic ring to move. The movement of the first magnetic ring drives the filter membrane to be tensioned, which can drive the second magnetic ring to move on the inner wall of the recovery box. When the second magnetic ring moves to the edge of the top opening of the recovery box, the dye liquid shaken out of the dye trough can wash away the impurities on the filter membrane. The impurities on the filter membrane can be discharged from the top opening of the recovery box along the filter membrane, so that the impurities on the filter membrane can be easily cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of a roller dyeing machine according to an embodiment of the present application.

[0038] Figure 2It is a partial structural schematic diagram of a roller dyeing machine according to an embodiment of the present application, which is used to display the dyeing tank and the recovery box.

[0039] Figure 3 It is a schematic diagram of the exploded structure of a partial structure of a roller dyeing machine according to an embodiment of the present application.

[0040] Figure 4 It is a top view of a partial structure of a roller dyeing machine according to an embodiment of the present application.

[0041] Figure 5 is along Figure 4 Schematic diagram of the cross-sectional structure along line AA.

[0042] Description of reference numerals:

[0043] 100, frame; 101, feeding cylinder; 102, feeding pipe; 103, delivery pump; 104, return pipe; 105, switch valve;

[0044] 200, dyeing trough; 201, first conveyor belt; 202, second conveyor belt; 203, impurity removal gap; 204, brush bar; 205, first guide roller; 206, second guide roller; 207, cloth guide gap; 208, rotating block; 209, motor; 210, second lifting member; 211, fixing member; 212, sliding trough; 213, moving block; 214, disc; 215, rotating rod;

[0045] 300, first lifting member; 301, cylinder; 302, first arc plate; 303, second arc plate;

[0046] 400, recovery box; 401, filter membrane; 402, first magnetic ring; 403, second magnetic ring. DETAILED DESCRIPTION

[0047] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0048] The present application embodiment discloses a pad dyeing machine. Figure 1 and Figure 2 The roller dyeing machine includes a frame 100, a dyeing tank 200 and a recycling box 400. The dyeing tank 200 and the recycling box 400 are both located at the bottom of the frame 100. The dyeing tank 200 and the recycling box 400 are both opened at the top. The dyeing tank 200 is located in the recycling box 400. The cloth enters the dyeing tank 200 for dyeing. The recycling box 400 is used to recover the dye liquid in the dyeing tank 200.

[0049] Reference Figure 2 and Figure 3The dyeing trough 200 and the recycling box 400 are both rectangular and have the same length direction. The dyeing trough 200 is filled with dye liquid, and a first conveyor belt 201 and a second conveyor belt 202 are arranged in the dyeing trough 200. The first conveyor belt 201 and the second conveyor belt 202 are spaced apart to form a cleaning gap 203. The first conveyor belt 201 and the second conveyor belt 202 are both connected with a plurality of brush strips 204. The length direction of the brush strips 204 is consistent with the length direction of the dyeing trough 200, and the plurality of brush strips 204 are evenly spaced and distributed on the first conveyor belt 201 and the second conveyor belt 202.

[0050] Reference Figure 4 and Figure 5 The first conveyor belt 201 and the second conveyor belt 202 are both inclined, one end of the first conveyor belt 201 and the second conveyor belt 202 are arranged near the top opening of the dyeing tank 200, the other end of the first conveyor belt 201 and the second conveyor belt 202 are facing the bottom of the dyeing tank 200, one end of the impurity removal gap 203 is facing the side of the top opening of the dyeing tank 200, and the other end of the impurity removal gap 203 is facing the bottom of the dyeing tank 200. The conveying directions of the first conveyor belt 201 and the second conveyor belt 202 are opposite. When the first conveyor belt 201 and the second conveyor belt 202 are conveying, the brush strip 204 is conveyed from one end of the impurity removal gap 203 near the top opening of the dyeing tank 200 to one end of the impurity removal gap 203 near the bottom of the dyeing tank 200. When the cloth passes through the impurity removal gap 203, the brush strip 204 can brush the cloth and brush off the impurities on the cloth.

[0051] The dyeing trough 200 is provided with a first guide roller 205, a second guide roller 206 and a first lifting member 300. The first guide roller 205 and the second guide roller 206 are both provided on the side of the dyeing trough 200 close to the cloth feeding side of the frame 100. The length direction of the first guide roller 205 and the length direction of the second guide roller 206 are consistent with the length direction of the dyeing trough 200, and the first guide roller 205 is located directly above the second guide roller 206. The first guide roller 205 and the second guide roller 206 are arranged at intervals to form a cloth guide gap 207. After the cloth enters the dyeing trough 200, it passes through the cloth guide gap 207 and then passes through the impurity removal gap 203.

[0052] The first lifting member 300 includes a cylinder 301, a first curved plate 302 and a second curved plate 303. The length direction of the first curved plate 302 is consistent with the length direction of the first guide roller 205, and the convex curved surface is connected to the top of the first guide roller 205. The concave curved surface of the first curved plate 302 opens toward the top of the dyeing tank 200. The length direction of the second curved plate 303 is consistent with the length direction of the second guide roller 206, and the convex curved surface is connected to the bottom of the second guide roller 206. The concave curved surface of the second curved plate 303 faces the bottom of the dyeing tank 200.

[0053] A rotating block 208 is provided at one end of the dyeing trough 200 along the length direction, and the ends of the first guide roller 205 and the second guide roller 206 located on the same side of the dyeing trough 200 are connected to the rotating block 208. A motor 209 is connected to the rotating block 208 on the side away from the first guide roller 205, and the output shaft of the motor 209 is connected to the rotating block 208. Sliding grooves 212 are provided on the inner walls of both ends of the dyeing trough 200 along the length direction, and the length direction of the sliding grooves 212 is distributed in the vertical direction. The housing of the motor 209 is slidably connected in the sliding groove 212. The cylinder 301 is located below the motor 209, and the piston rod of the cylinder 301 is arranged in the vertical direction and connected to the bottom of the motor 209.

[0054] A disc 214 is provided at the other end of the dyeing trough 200 along the length direction, and the ends of the first guide roller 205 and the second guide roller 206 away from the rotating block 208 are connected to the disc 214. A moving block 213 is slidingly connected in the sliding groove 212 at the other end of the dyeing trough 200, and a rotating rod 215 is connected to the side of the disc 214 away from the first guide roller 205 and the second guide roller 206. The rotating rod 215 is a round rod, and the central axis of the rotating rod 215 is colinear with the central axis of the disc 214. One end of the rotating rod 215 is connected to the disc 214, and the other end of the rotating rod 215 is inserted into the moving block 213 and is rotatably connected to the moving block 213.

[0055] The outer wall of the dyeing trough 200 is spaced apart from the inner wall of the recycling box 400. A second lifting member 210 is provided at the bottom of the recycling box 400. The second lifting member 210 adopts an X-shaped lifting frame. The top of the X-shaped lifting frame is connected to the bottom of the dyeing trough 200. The X-shaped lifting frame is used to lift the dyeing trough 200 in the vertical direction.

[0056] Reference Figure 3 and Figure 4 The outer wall of the dyeing tank 200 is connected to the inner wall of the recycling box 400 through a filter membrane 401. The filter membrane 401 is a square ring and is a flexible membrane. The inner ring of the filter membrane 401 is connected to a first magnetic ring 402. The first magnetic ring 402 is a square ring. The first magnetic ring 402 is detachably connected to the outer peripheral wall of the dyeing tank 200 through a fixing member 211. The first magnetic ring 402 is sleeved on the outer peripheral wall of the dyeing tank 200. The fixing member 211 adopts a bolt, and the bolt passes through one end of the first magnetic ring 402 and is threadedly connected to the outer wall of the dyeing tank 200.

[0057] The outer ring of the filter membrane 401 is connected to the second magnetic ring 403, which is in a square ring shape. The inner wall of the recovery box 400 is made of iron, and the second magnetic ring 403 is sucked into the inner wall of the recovery box 400. When the first magnetic ring 402 and the second magnetic ring 403 are at the same height, the connection end of the filter membrane 401 and the first magnetic ring 402 and the second magnetic ring 403 is higher than the middle of the filter membrane 401.

[0058] Reference Figure 3 and Figure 4The recovery box 400 is connected to the feeding cylinder 101 through the feeding pipe 102. The two ends of the feeding pipe 102 are respectively connected to the bottom of the recovery box 400 and the bottom of the feeding cylinder 101. The feeding pipe 102 is provided with a switch valve 105. The feeding cylinder 101 is filled with dye reagent. The recovery box 400 is connected to the dyeing tank 200 through the return pipe 104. The middle part of the return pipe 104 is connected to the delivery pump 103. One end of the return pipe 104 is connected to the bottom of the recovery box 400. The other end of the return pipe 104 passes through the recovery box 400 and is connected to the bottom of the dyeing tank 200. The end of the return pipe 104 passing through the recovery box 400 is a corrugated pipe. The return pipe 104 is provided with a switch valve 105.

[0059] The implementation principle of a roller dyeing machine in the embodiment of the present application is as follows: the cloth enters the dyeing tank 200 from the cloth feeding side of the frame 100, passes through the cloth guide gap 207 and the impurity removal gap 203 in sequence, and then is output from the dyeing tank 200. The cylinder 301 can drive the first guide roller 205 and the second guide roller 206 to rise and fall, and the motor 209 can drive the first guide roller 205 and the second guide roller 206 to rotate. The first guide roller 205 and the second guide roller 206 can shake the cloth to avoid the cloth from being stained with color impurities as much as possible. When the first guide roller 205 and the second guide roller 206 shake the cloth, they can drive the first curved plate 302 and the second curved plate 303 to rise and fall and rotate. The first curved plate 302 and the second curved plate 303 can stir the dye liquid, so that the dye liquid can be shaken. The dye liquid shaken out of the dyeing tank 200 is filtered by the filter membrane 401 and then enters the recovery box 400 for recovery. The first conveyor belt 201 and the second conveyor belt 202 drive the brush bar 204 to convey. The brush bar 204 can brush the surface of the cloth, and can brush off the impurities such as color blocks on both sides of the cloth, and can reduce the impurities on the surface of the cloth, thereby improving the quality of the cloth after roller dyeing.

[0060] The present application also discloses a cloth dyeing process, which includes the following process steps:

[0061] S1. Singeing: singe the excess fluff on the fabric;

[0062] S2, desizing: desizing the singed fabric;

[0063] S3, scouring: scouring the fabric to remove the impurities remaining on the fabric;

[0064] S4, bleaching: bleach the fabric to remove pigments;

[0065] S5, dyeing: the bleached fabric is subjected to pad dyeing and coloring by means of the above-mentioned pad dyeing machine;

[0066] S6. Shaping: shaping the dyed fabric.

[0067] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pad dyeing machine, characterized in that: The invention comprises a frame (100) and a dyeing tank (200), wherein the dyeing tank (200) is connected to the bottom of the frame (100), the top of the dyeing tank (200) is open and a first conveyor belt (201) and a second conveyor belt (202) are arranged in the dyeing tank (200), the first conveyor belt (201) and the second conveyor belt (202) are both inclined and spaced to form a debris removal gap (203), the surfaces of the first conveyor belt (201) and the second conveyor belt (202) are both distributed with brush strips (204), and the length direction of the brush strips (204) is parallel to the dyeing tank (20 0) The length direction is consistent, one end of the first conveyor belt (201) and the second conveyor belt (202) are close to the top opening of the dyeing tank (200), the other ends of the first conveyor belt (201) and the second conveyor belt (202) are facing the bottom of the dyeing tank (200), the conveying directions of the first conveyor belt (201) and the second conveyor belt (202) are opposite, and the brush bar (204) is used to brush the fabric along one end of the impurity removal gap (203) close to the top opening of the dyeing tank (200) to one end of the impurity removal gap (203) close to the bottom of the dyeing tank (200); A first guide roller (205) and a second guide roller (206) are provided in the dyeing trough (200); the length directions of the first guide roller (205) and the second guide roller (206) are arranged along the width direction of the cloth; the first guide roller (205) and the second guide roller (206) are spaced apart to form a cloth guiding gap (207); the cloth passes through the cloth guiding gap (207) and the impurity removing gap (203) in sequence; a first lifting member (300) is provided in the dyeing trough (200); the first guide roller (205) and the second guide roller (206) are both connected to the first lifting member (300); the first lifting member (300) is used to move the first guide roller (205) and the second guide roller (206) in a vertical direction; A rotating block (208) and a motor (209) are provided in the dyeing tank (200); one end of each of the first guide roller (205) and the second guide roller (206) is connected to the rotating block (208); the rotating block (208) is connected to an output shaft of the motor (209); and the housing of the motor (209) is connected to the first lifting member (300); The first guide roller (205) is located above the second guide roller (206); the first lifting member (300) comprises a cylinder (301), a first arc plate (302) and a second arc plate (303); the first arc plate (302) is connected to the top of the first guide roller (205) and the concave arc side faces the top opening of the dyeing tank (200); the second arc plate (303) is connected to the bottom of the second guide roller (206) and the concave arc side faces the bottom of the dyeing tank (200); the piston rod of the cylinder (301) is arranged in a vertical direction and the end thereof is connected to the housing of the motor (209); The inner walls of both ends of the dyeing tank (200) along the length direction are provided with sliding grooves (212), and the length direction of the sliding grooves (212) is distributed along the vertical direction. The housing of the motor (209) is slidingly connected to one of the sliding grooves (212), and a moving block (213) is slidingly connected in the other sliding groove (212). The ends of the first guide roller (205) and the second guide roller (206) away from the motor (209) are connected to a disc (214), and one side of the disc (214) is rotationally connected to the moving block (213) via a rotating rod (215).

2. The pad dyeing machine according to claim 1, characterized in that: A recovery box (400) is provided at the bottom of the frame (100), the top of the recovery box (400) is opened, the dyeing tank (200) is located in the recovery box (400), the outer wall of the dyeing tank (200) and the inner wall of the recovery box (400) are spaced apart and connected to each other through a filter membrane (401), and the connection end of the filter membrane (401) with the dyeing tank (200) and the recovery box (400) is higher than the middle of the filter membrane (401).

3. The pad dyeing machine according to claim 2, characterized in that: The filter membrane (401) is annular, the inner ring side of the filter membrane (401) is connected to a first magnetic ring (402), the outer ring side of the filter membrane (401) is connected to a second magnetic ring (403), the first magnetic ring (402) is detachably connected to the outer wall of the dyeing tank (200) via a fixing member (211), and the second magnetic ring (403) is suction-connected to the inner wall of the recovery box (400).

4. The pad dyeing machine according to claim 2, characterized in that: The recovery box (400) is connected to a feeding cylinder (101) via a feeding pipe (102), and the feeding cylinder (101) is used to transport dye liquor reagent to the recovery box (400). The bottom of the recovery box (400) is connected to a return pipe (104), and the return pipe (104) is connected to the bottom of the dye tank (200) via a delivery pump (103). The feeding pipe (102) and the return pipe (104) are both connected to a switch valve (105).

5. The pad dyeing machine according to claim 3, characterized in that: The dyeing trough (200) is connected to a second lifting member (210), and the second lifting member (210) moves the dyeing trough (200) in a vertical direction.

6. A cloth dyeing process, characterized in that: The process steps include: S1. Singeing: singe the excess fluff on the fabric; S2, desizing: desizing the singed fabric; S3, scouring: scouring the fabric to remove the impurities remaining on the fabric; S4, bleaching: bleach the fabric to remove pigments; S5, dyeing: the bleached fabric is subjected to roller dyeing and coloring by a roller dyeing machine as described in any one of claims 1 to 5; S6. Shaping: shaping the dyed fabric.

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