Yarn coloring equipment and method

Abstract

Yarn coloring equipment comprises a dipping assembly, a color uniformizing assembly and a color fixing assembly, the color uniformizing assembly comprises a box body, an upper extrusion assembly, a flexible color uniformizing belt and a lower extrusion assembly are sequentially arranged in the box body from top to bottom, one side of the flexible color uniformizing belt is provided with an elliptical wheel which is vertically opened and closed relative to a yarn movement path, and the other side of the flexible color uniformizing belt is provided with a color complementing assembly; the tail end of the color complementing assembly is provided with a spray head facing the flexible color uniformizing belt, yarn penetrates through the flexible color uniformizing belt, the interior of the flexible color uniformizing belt can rotate through an internal gear, and rotation of an elliptical wheel can push the upper extrusion assembly and the lower extrusion assembly to slide in the vertical direction. The color uniformizing device further comprises a color uniformizing driving mechanism which is used for driving the upper extrusion assembly and the lower extrusion assembly to relatively wriggle. By means of the flexible color uniformizing belts designed in a rotating mode, the problem that when yarn is colored, the upper and lower flexible color uniformizing belts only adsorb ink outside the yarn, and the interior of the yarn cannot be effectively colored is perfectly solved.

Description

Technical Field

[0001] This invention relates to the field of yarn dyeing technology, specifically to a yarn dyeing device and method. Background Technology

[0002] Yarn dyeing is an important part of the yarn production process. The traditional dyeing method is to soak the yarn in a dye bath or dyeing cylinder. This method generates a lot of wastewater, which can easily cause environmental pollution, and it is impossible to dye different segments of the yarn separately.

[0003] Later, waterless yarn dyeing methods emerged that directly spray ink onto the yarn, effectively overcoming the aforementioned defects, but still had shortcomings for space dyeing. The applicant previously filed a patent application with application number 202322620727.7 entitled "Apparatus for Waterless Space Dyed Yarn," which improved upon this waterless yarn dyeing method and enhanced the space dyeing effect.

[0004] However, during subsequent use, it was found that although the vertically distributed flexible color-balancing sheets improved the problem of dyeing the yarn internally, the ink on the flexible color-balancing sheets originated from the outer surface of the yarn. When the yarn passed through the yarn dyeing component, the amount of ink adhering to its outer surface was limited. Therefore, the amount of ink that the flexible color-balancing sheets could absorb by the yarn color-balancing component was also limited. The ink on the outer surface of the yarn is also limited, which causes the color inside the yarn to sometimes be slightly lighter than the outside during the peristaltic process, resulting in uneven dyeing. Moreover, during the process of squeezing the yarn, the upper flexible color-balancing sheet gradually contains less ink than the lower layer due to gravity, which also affects the dyeing effect inside the yarn and causes uneven dyeing. Summary of the Invention

[0005] To address the technical problems existing in the background art, the present invention provides a yarn dyeing device and method.

[0006] The technical solution of this invention is as follows: A yarn dyeing device includes a plurality of immersion dyeing components and even dyeing components arranged in groups along the yarn movement path, and a dye fixing component arranged at the last position to realize the space dyeing operation. The immersion dyeing components and the dye fixing components are respectively the yarn dyeing components and yarn dye fixing components used by the applicant in a previous patent application with application number 202322620727.7 entitled "Apparatus for Anhydrous Space Dyed Yarn".

[0007] The color-balancing component of the present invention includes a housing, in which an upper extrusion component, a flexible color-balancing belt and a lower extrusion component are arranged sequentially from top to bottom. An elliptical wheel that opens and closes perpendicularly to the yarn movement path is provided on one side of the flexible color-balancing belt, and a color-correcting component is provided on the other side. A nozzle facing the flexible color-balancing belt is provided at the end of the color-correcting component, and yarn is threaded inside the flexible color-balancing belt.

[0008] The flexible color-balancing belt is equipped with several gears, which are in close contact with each other. The central shaft of at least one gear extends out of the housing and is connected to the power unit. The rotation of the gear can drive the flexible color-balancing belt to rotate.

[0009] The rotation of the elliptical wheel can push the upper and lower extrusion components to slide vertically, thereby enabling the upper and lower extrusion components to make contact with or separate from the flexible color-balancing tape. When the upper and lower extrusion components separate from the flexible color-balancing tape, the yarn does not come into contact with the flexible color-balancing tape, so that the yarn will not be dyed with other colors during the section dyeing operation.

[0010] It also includes a color-uniform driving mechanism for driving the upper extrusion assembly and the lower extrusion assembly to creep relative to each other.

[0011] This invention sprays ink onto a flexible color-balancing tape using a complementary color-balancing component. After the tape rotates, the ink-rich area moves above the yarn, solving the problem of insufficient ink absorption by the upper flexible color-balancing sheet during yarn coloring, thus failing to adequately color the yarn's interior. Furthermore, after coloring, this area continues to rotate, eventually moving above the lower extrusion component. This rotating flexible color-balancing tape perfectly solves the problem of the upper and lower flexible color-balancing tapes only absorbing ink from the outside of the yarn, failing to effectively color the yarn's interior. Moreover, compared to the applicant's previous fixed flexible color-balancing tape design, the rotating flexible color-balancing tape continuously changes its creeping position, avoiding repeated extrusion of a fixed area and extending the tape's lifespan.

[0012] In one embodiment, the upper extrusion assembly includes an upper extruder, an upper support, a guide, and an elastic reset component. The upper support is vertically slidably connected to the inner wall of the box above the elliptical wheel. The guide and the elastic reset component are arranged on the side near the flexible color-matching belt along the direction perpendicular to the yarn movement path. The other end of the guide and the elastic reset component is connected to the upper extruder.

[0013] The upper extrusion component has two functions: one is to contact the flexible color-balancing tape downwards and extrude it onto the yarn; the other is to move laterally, twist the yarn open to expose the interior, allowing the ink adsorbed on the flexible color-balancing tape to dye it, and then return to the initial position.

[0014] In one embodiment, the upper extrusion member includes an upper connecting body and a first extrusion part. The upper connecting body is connected to a guide and an elastic reset component on the side facing the upper support. The first extrusion part is located below the upper connecting body, with a flat bottom and a sloped side away from the upper support. The bottom dimension is smaller than the upper dimension. The sloped design allows the upper extrusion member to contact the flexible color-matching tape through this transition surface, avoiding scratching the flexible color-matching tape.

[0015] In one embodiment, the lower extrusion assembly includes a lower extruder and an elastic reset component. The lower extruder includes a lower connecting body and a second extrusion part protruding from its upper part. The elastic reset component is provided at the bottom end of the lower connecting body. The elliptical wheel is always in contact with the upper surface of one end of the lower connecting body. By rotating the elliptical wheel, the lower extrusion assembly contacts or separates from the flexible color-matching belt, thereby coloring the inside of the yarn or allowing the yarn to pass through.

[0016] As a preferred embodiment, the opposing surfaces of the first extrusion section and the second extrusion section are provided with several protrusions to facilitate the twisting of the yarn and expose the undyed internal portion.

[0017] As a further improvement, the height of the first extrusion section is greater than the height of the second extrusion section, the rotation center of the elliptical wheel is eccentrically set, and the moving displacement of the upper extrusion assembly is greater than the moving displacement of the lower extrusion assembly.

[0018] Since the second extrusion section plays a more supporting role, the design above allows the upper layer of the flexible color-balancing tape to be squeezed and lowered by the first extrusion section to a greater height. This facilitates the ink to gather at a lower position and also makes the flexible color-balancing tape at the contact point with the first extrusion section thinner, making it easier for the first extrusion section to laterally rub the yarn.

[0019] In one embodiment, the flexible color-balancing tape is an annular tape. Its working shape includes an upper straight section and a lower straight section, corresponding to the positions of the first and second extrusion sections, respectively. This facilitates control over the engagement and disengagement of the flexible color-balancing tape with the upper and lower extrusion components. The upper straight section rotates from the color-matching component towards the first extrusion section, and the area replenished with ink quickly rotates to the working area, facilitating yarn coloring.

[0020] In one embodiment, the color-balancing drive mechanism includes an electromagnetic attraction component, which includes a first electromagnetic contact disposed on the inner wall of the housing above the color-matching component, and a second electromagnetic contact disposed on the upper extrusion component near the end of the color-matching component.

[0021] The present invention also provides a yarn dyeing method, which uses the above-mentioned yarn dyeing equipment and specifically includes the following steps: S1. Move the yarn to the designated group of immersion components. Different groups of immersion components are connected to different color boxes. S2. The dyed yarn moves to the color-leveling component. The elliptical wheel changes from a vertical state to a horizontal state. The upper extrusion component and the lower extrusion component extrude the flexible color-leveling tape to the opposite side, and finally clamp it on the upper and lower sides of the yarn. S3. Start the color balancing drive mechanism, drive the upper extrusion component to move away from the elliptical wheel, and generate relative creep with the lower extrusion component in the horizontal direction to transfer the ink adsorbed on the flexible color balancing belt to the yarn. S4. After the color balancing is completed, the drive elliptical wheel changes from a horizontal state to a vertical state, the upper extrusion component and the lower extrusion component separate from the flexible color balancing belt, the color balancing drive mechanism is turned off, and the upper extrusion component returns to its original position under the action of the elastic reset component. S5. Drive the gear to rotate for a specified time, and at the same time start the color matching component to spray the dye liquid onto the moving flexible color matching belt. S6. Move the yarn to the next dyeing assembly position; S7. Repeat steps S2-S6. The yarn that has been evenly colored enters the color-fixing component for color fixing.

[0022] Through the above design, this invention provides a yarn coloring device and method. By spraying ink onto a flexible color-balancing belt using a color-matching component, the ink-rich area rotates above the yarn after the flexible color-balancing belt rotates. This solves the problem that during yarn coloring, the upper flexible color-balancing sheet absorbs too little ink, failing to adequately color the interior of the yarn. Furthermore, after coloring, this area continues to rotate, eventually reaching above the lower extrusion component. This rotating flexible color-balancing belt perfectly solves the problem that during yarn coloring, the upper and lower flexible color-balancing belts only absorb ink outside the yarn, failing to effectively color the interior. Moreover, compared to the applicant's previous fixed flexible color-balancing belt design, the rotating flexible color-balancing belt continuously changes its creeping position, avoiding repeated extrusion of a fixed area and extending the service life of the flexible color-balancing belt. Attached Figure Description

[0023] In the attached diagram: Figure 1 A schematic diagram of the internal working state of the yarn coloring equipment when it is not in operation; Figure 2 A schematic diagram of the internal working state of the yarn dyeing equipment; Figure 3 for Figure 2 A top view from the middle position; Figure 4 This is a structural schematic diagram of the upper extrusion component, where (a) is a front view and (b) is a side view; Figure 5 This is a schematic diagram of the lower extrusion component; Figure 6 This is a structural diagram of the right fixed base; Figure 7 This is a schematic diagram of the existing technology; The components represented by the various reference numerals in the diagram are: 1. Immersion component; 2. Color leveling component; 21. Box body; 22. Flexible color leveling belt; 23. Gear; 24. Color matching component; 25. Upper extrusion component; 251. Upper extruder; 2511. Upper connecting body; 2512. First extrusion section; 252. Upper support; 253. Horizontal slide rail; 254. First spring; 26. Lower extrusion component; 261. Lower extruder; 2611. Lower connecting body; 2612. Second extrusion section; 262. Left fixed seat; 263. Right fixed seat; 264. Second spring; 27. Elliptical wheel; 28. First electromagnetic contact; 29. ​​Second electromagnetic contact; 3. Color fixing component; 4. Yarn. Detailed Implementation

[0024] See Figure 7 This embodiment provides a yarn dyeing device, including a plurality of immersion dyeing components 1 and color-evening components 2 arranged in groups along the movement path of the yarn 4, and a color-fixing component 3 arranged at the last position to realize the segment dyeing operation. The immersion dyeing components 1 and the color-fixing component are respectively the yarn dyeing components and yarn color-fixing components used by the applicant in the patent application number 202322620727.7 entitled "Apparatus for Anhydrous Segment Dyed Yarn".

[0025] See Figures 1-3 The color-evening component 2 of the present invention includes a housing 21, in which an upper extrusion component 25, a flexible color-evening belt 22 and a lower extrusion component 26 are arranged sequentially from top to bottom. An elliptical wheel 27 that opens and closes perpendicularly to the yarn movement path is provided on one side of the flexible color-evening belt 22, and a color-complementing component 24 is provided on the other side. A nozzle facing the flexible color-evening belt 22 is provided at the end of the color-complementing component 24. Yarn is threaded inside the flexible color-evening belt 22.

[0026] The flexible color-balancing belt 22 is provided with a number of gears 23. In this embodiment, four gears are used as an example. The flexible color-balancing belt 22 is in close contact with the gears 23. The central shaft of at least one gear 23 extends out of the housing 21 and is connected to the power unit, so that the rotation of the gear 23 can drive the flexible color-balancing belt 22 to rotate.

[0027] The flexible color-balancing tape 22 can absorb dye liquor and, under the squeezing action of the upper extrusion component 25 and the lower extrusion component 26, dye the dye liquor into the yarn. Its material is not limited; sponge, etc., are all acceptable.

[0028] The gear 23 is made of plastic and has the same width as the flexible color-balancing strip 22 to avoid scratching the flexible color-balancing strip. In order to better drive the flexible color-balancing strip 22 to rotate, a wave structure can be set on the inner side of the flexible color-balancing strip 22 to facilitate contact with the gear 23, or a gear 23 can be added on the outer side of the flexible color-balancing strip 22. The two gears 23 arranged opposite to each other can jointly drive the flexible color-balancing strip 22 to rotate. This invention does not impose any restrictions.

[0029] The rotation of the elliptical wheel 27 can push the upper extrusion assembly 25 and the lower extrusion assembly 26 to slide vertically, thereby achieving the extrusion contact or separation of the upper extrusion assembly 25 and the lower extrusion assembly 26 from the flexible color-leveling belt 22. When the upper extrusion assembly 25 and the lower extrusion assembly 26 are separated from the flexible color-leveling belt 22, the yarn is not in contact with the flexible color-leveling belt 22, so that the yarn will not be dyed with other colors during the yarn dyeing operation. See [link to relevant documentation]. Figure 1 As shown.

[0030] It also includes a color-evening drive mechanism for driving the upper extrusion assembly 25 and the lower extrusion assembly 26 to move relative to each other.

[0031] This invention sprays ink onto the flexible color-balancing tape 22 via the color-complementing component 24. After the flexible color-balancing tape 22 rotates, the ink-rich area moves above the yarn, solving the problem that when dyeing yarn, the upper flexible color-balancing sheet absorbs too little ink, failing to adequately color the inside of the yarn. Furthermore, after dyeing, this area continues to rotate, eventually moving above the lower extrusion component 26. This rotating flexible color-balancing tape 22 perfectly solves the problem that when dyeing yarn, the upper and lower flexible color-balancing tapes 22 only absorb ink outside the yarn, failing to effectively color the inside of the yarn. Moreover, compared to the applicant's previous fixed flexible color-balancing tape 22, the rotating flexible color-balancing tape 22 continuously changes its creeping position, avoiding repeated extrusion of a fixed area and extending the service life of the flexible color-balancing tape 22.

[0032] In one embodiment, the upper extrusion assembly 25 includes an upper extrusion member 251, an upper support member 252, a guide member, and an elastic reset member. The upper support member 252 is a rectangular support block that is vertically slidably connected to the inner wall of the box above the elliptical wheel 27. The guide member and the elastic reset member are arranged on the side near the flexible color-matching belt 22 along the direction perpendicular to the yarn movement path. The other end of the guide member and the elastic reset member are connected to the upper extrusion member 251.

[0033] The upper extrusion assembly 25 has two functions: one is to contact the flexible color-balancing tape 22 downwards and extrude it onto the yarn 4; the other is to move laterally, twist the yarn 4 to expose its interior, allowing the ink adsorbed on the flexible color-balancing tape 22 to dye it, and then return to its initial position.

[0034] The following is combined Figure 4 In this embodiment, the upper extrusion member 251 includes an upper connecting body 2511 and a first extrusion part 2512. The upper connecting body 2511 connects a guide and an elastic reset member on the side facing the upper support member 252. The first extrusion part 2512 is located below the upper connecting body 2511, with a flat bottom and a sloped side away from the upper support member 252. The bottom dimension is smaller than the upper dimension. The sloped design allows the upper extrusion member 251 to contact the flexible color-matching tape 22 through this transition surface, avoiding scratching the flexible color-matching tape 22.

[0035] Furthermore, the upper extrusion member 251 has a T-shape on both the front and side. The elastic reset component is a first spring 254. The guide can be a connecting rod or a slide rail, as long as the upper extrusion member 251 can move upward to the support member 252 under the tension of the first spring 254. In this embodiment, the guide is a horizontal slide rail 253, with corresponding grooves opened at the lower ends of both sides of the upper connecting body 2511.

[0036] Preferably, a portion of the horizontal slide rail 253 is submerged within the upper support member 252 to better support the distal upper extrusion member 251.

[0037] The following is combined Figure 5 In this embodiment, the lower extrusion assembly 26 includes a lower extrusion member 261 and an elastic reset member. The lower extrusion member 261 includes a lower connecting body 2611 and a second extrusion part 2612 protruding from its upper part. An elastic reset member is provided at the bottom end of the lower connecting body 2611. The elliptical wheel 27 is always in contact with the upper surface of one end of the lower connecting body 2611. By rotating the elliptical wheel 27, the lower extrusion assembly 26 contacts or separates from the flexible color-matching belt 22, thereby coloring the inside of the yarn or allowing the yarn to pass through.

[0038] The elastic reset component is a second spring 264, at least two of which are located in the area below the second compression part 2612.

[0039] To better guide the lower extruder 261 to move up and down, this embodiment also provides a left fixed seat 262 and a right fixed seat 263 at its left and right ends, respectively. The left fixed seat 262 is a rectangular support seat with a height lower than the flexible color-matching strip 22. The outer wall of the end facing the lower extruder 261 is provided with a vertically arranged slide rail, and the lower right end of the housing 21 is also provided with a vertical slide rail. The left and right ends of the lower extruder 261 are respectively provided with sliding grooves, which are slidably connected in the vertical slide rails on both sides.

[0040] See Figure 6 The right fixing seat 263 includes two symmetrically arranged inverted L-shaped fixing seats, which are respectively fixed at the front and rear ends of the lower extrusion member 261 located in the lower region of the elliptical wheel 27, and assist the elliptical wheel 27 in limiting the highest position of the lower extrusion member 261. The middle gap of the right fixing seat 263 can accommodate the rotation of the elliptical wheel 27.

[0041] As a preferred embodiment, the opposing surfaces of the first extrusion section 2512 and the second extrusion section 2612 are provided with several protrusions to facilitate the twisting of the yarn and expose the uncolored internal portion.

[0042] In this embodiment, the flexible color-balancing belt 22 is an annular belt, and the four gears 22 inside are arranged in an isosceles trapezoidal shape and are in close contact with the flexible color-balancing belt 22, thereby driving it to rotate, and the adjacent gears 22 maintain a safe gap. Figure 3 The shape of the lower extrusion assembly 26 is shown in the middle. Only the position of the gear 22 connected to the power unit is shown; the other gears 22 are not shown.

[0043] In its initial state, the flexible color-balancing tape 22 is an isosceles trapezoid with straight sections on both its upper and lower surfaces, corresponding to the positions of the first extrusion section 2512 and the second extrusion section 2612, respectively. This facilitates control over the engagement and disengagement of the flexible color-balancing tape 22 with the upper extrusion assembly 25 and the lower extrusion assembly 26. The upper straight section rotates from the color-matching assembly 24 toward the first extrusion section 2512, and the area replenished with ink quickly rotates to the working area, facilitating yarn coloring.

[0044] The color matching component 24 includes tubing and a printhead. The printhead is oriented towards the upper left corner of the flexible color matching belt 22. This avoids interference with the moving upper extrusion component 25 and allows the area that has been replenished with ink to quickly reach the working area.

[0045] As a further improvement, the height of the first extrusion section 2512 is greater than the height of the second extrusion section 2612, and the rotation center of the elliptical wheel 27 is eccentrically set. (See [reference needed]). Figure 2 The position shown is slightly to the right of the center, which makes the moving displacement of the upper extrusion component 25 greater than that of the lower extrusion component 26.

[0046] Since the second extrusion section 2612 plays a more supporting role, the design above allows the upper layer of the flexible color-balancing tape 22 to be squeezed and lowered by the first extrusion section 2512 to a greater height. This facilitates the ink to gather at a lower position and also makes the flexible color-balancing tape 22 at the contact position with the first extrusion section 2512 thinner, making it easier for the first extrusion section 2512 to laterally rub the yarn.

[0047] In this embodiment, the color-balancing drive mechanism includes an electromagnetic attraction component. The electromagnetic attraction component includes a first electromagnetic contact 28 disposed on the inner wall of the housing 21 above the color-complementing component 24, and a second electromagnetic contact 29 disposed on the upper extrusion component 25 near the end of the color-complementing component 24. This structure is the same as that in the previous patent application and will not be described again.

[0048] The present invention also provides a yarn dyeing method, which uses the above-mentioned yarn dyeing equipment and specifically includes the following steps: S1. Move the yarn 4 to the designated group of immersion component 1, and connect different color boxes to different groups of immersion components 1. S2. The dyed yarn moves to the color-evening component 2. The elliptical wheel 27 changes from a vertical state to a horizontal state. The upper extrusion component 25 and the lower extrusion component 26 extrude the flexible color-evening belt 22 to the opposite side, and finally clamp it on the upper and lower sides of the yarn. S3. Start the color-balancing drive mechanism, drive the upper extrusion assembly 25 to move away from the elliptical wheel 27, and generate relative creep with the lower extrusion assembly 26 in the horizontal direction, transferring the ink adsorbed on the flexible color-balancing belt 22 to the yarn. Preferably, in order to improve the coloring effect, the color-evening drive mechanism can be repeatedly opened multiple times, so that the upper extrusion component 25 and the lower extrusion component 26 will generate multiple relative peristaltic movements. S4. After the color balancing is completed, the drive elliptical wheel 27 changes from a horizontal state to a vertical state, the upper extrusion assembly 25 and the lower extrusion assembly 26 separate from the flexible color balancing belt 22, the color balancing drive mechanism is closed, and the upper extrusion assembly 25 returns to its original position under the action of the first spring 254. S5. Drive gear 23 to rotate for a specified time, and at the same time start the color matching component 24, so that the color matching component 24 sprays dye liquid onto the moving flexible color matching belt 22. S6. Move the yarn to the next dyeing assembly 1 position; S7. Repeat steps S2-S6. The yarn that has been evenly colored enters the color-fixing component 3 for color fixing.

Claims

1. A yarn dyeing device, comprising a plurality of immersion dyeing components (1) and a color-leveling component (2) arranged in groups along the yarn (4) movement path, and a color-fixing component (3) arranged at the final position, characterized in that, The color-balancing component (2) includes a housing (21), which contains an upper extrusion component (25), a flexible color-balancing belt (22), and a lower extrusion component (26) arranged sequentially from top to bottom. The flexible color-balancing belt (22) has an elliptical wheel (27) that opens and closes perpendicularly to the yarn movement path on one side, and a color-complementing component (24) on the other side. The color-complementing component (24) has a nozzle facing the flexible color-balancing belt (22) at its end. Yarn is threaded inside the flexible color-balancing belt (22). The flexible color-balancing strip (22) is provided with a number of gears (23). The flexible color-balancing strip (22) is in close contact with the gears (23). The central shaft of at least one gear (23) extends out of the housing (21) and is connected to the power unit. The rotation of the gear (23) can drive the flexible color-balancing strip (22) to rotate. The rotation of the elliptical wheel (27) can push the upper extrusion assembly (25) and the lower extrusion assembly (26) to slide in the vertical direction, thereby realizing the extrusion contact or separation of the upper extrusion assembly (25) and the lower extrusion assembly (26) with the flexible color-matching tape (22). When the upper extrusion assembly (25) and the lower extrusion assembly (26) are separated from the flexible color-matching tape (22), the yarn has no contact with the flexible color-matching tape (22). It also includes a color-balancing drive mechanism for driving the upper extrusion assembly (25) and the lower extrusion assembly (26) to creep relative to each other.

2. The yarn dyeing device according to claim 1, characterized in that, The upper extrusion assembly (25) includes an upper extrusion member (251), an upper support member (252), a guide member, and an elastic reset member. The upper support member (252) is vertically slidably connected to the inner wall of the box (21) above the elliptical wheel (27). The guide member and the elastic reset member are arranged on the side near the flexible color-matching belt (22) along the direction perpendicular to the yarn movement path. The other end of the guide member and the elastic reset member are connected to the upper extrusion member (251).

3. The yarn dyeing device according to claim 2, characterized in that, The upper extrusion member (251) includes an upper connecting body (2511) and a first extrusion part (2512). The upper connecting body (2511) is connected to a guide and an elastic reset member on the side facing the upper support member (252). The first extrusion part (2512) is located below the upper connecting body (2511), with a flat bottom and an inclined side away from the upper support member (252). The bottom dimension is smaller than the upper dimension.

4. The yarn dyeing device according to claim 3, characterized in that, The lower extrusion assembly (26) includes a lower extrusion member (261) and an elastic reset member. The lower extrusion member (261) includes a lower connecting body (2611) and a second extrusion part (2612) protruding from its upper part. An elastic reset member is provided at the bottom end of the lower connecting body (2611). The elliptical wheel (27) is always in contact with the upper surface of one end of the lower connecting body (2611).

5. A yarn dyeing device according to claim 4, characterized in that, The first extrusion part (2512) and the second extrusion part (2612) have several protrusions on their opposite surfaces.

6. The yarn dyeing device according to claim 4, characterized in that, The height of the first extrusion section (2512) is greater than the height of the second extrusion section (2612).

7. A yarn dyeing device according to claim 6, characterized in that, The rotation center of the elliptical wheel (27) is eccentrically set, and the moving displacement of the upper extrusion assembly (25) is greater than the moving displacement of the lower extrusion assembly.

8. A yarn dyeing device according to claim 4, characterized in that, The flexible color-matching tape (22) is an annular tape. Its working shape includes an upper straight section and a lower straight section, which correspond to the positions of the first extrusion section (2512) and the second extrusion section (2612) respectively. The rotation direction of the upper straight section is from the complementary color assembly to the first extrusion section (2512).

9. A yarn dyeing device according to any one of claims 1-8, characterized in that, The color-balancing drive mechanism includes an electromagnetic attraction component, which includes a first electromagnetic contact (28) disposed on the inner wall of the housing (21) above the color-complementing component (24), and a second electromagnetic contact (29) disposed on the upper extrusion component (25) near the end of the color-complementing component (24).

10. A method for dyeing yarn, using the yarn dyeing equipment according to any one of claims 1-9, characterized in that, Specifically, the steps include the following: S1. Move the yarn to the position of the immersion component (1) of the designated group. Different groups of immersion components (1) are connected to different color boxes. S2. The dyed yarn moves to the color-balancing component (2). The elliptical wheel (27) changes from a vertical state to a horizontal state. The upper extrusion component (25) and the lower extrusion component (26) extrude the flexible color-balancing strip (22) to the opposite side, and finally clamp it on the upper and lower sides of the yarn. S3. Start the color-balancing drive mechanism, drive the upper extrusion assembly (25) to move away from the elliptical wheel (27), and generate relative creep with the lower extrusion assembly (26) in the horizontal direction, transferring the ink adsorbed on the flexible color-balancing belt (22) to the yarn. S4. After the color balancing is completed, the driving elliptical wheel (27) changes from the horizontal state to the vertical state, the upper extrusion assembly (25) and the lower extrusion assembly (26) separate from the flexible color balancing belt (22), the color balancing drive mechanism is turned off, and the upper extrusion assembly (25) returns to its original position under the action of the elastic reset component. S5. Drive gear (23) rotates for a specified time, and at the same time activates complementary color component (24) to spray dye liquid onto the moving flexible uniform color belt (22); S6. Move the yarn to the position of the next dyeing assembly (1); S7. Repeat steps S2-S6. The yarn that has been evenly colored enters the color-fixing component (3) for color fixing.

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