Yarn waterless dyeing system and dye injection device thereof

Abstract

To provide a dye injection device capable of uniformly absorbing a dye into a yarn.SOLUTION: A lower base 1 and an upper base 2 are provided, a plurality of passages 3 through which yarns to be dyed respectively pass are defined between the lower base 1 and the upper base 2, a plurality of first downstream passages 14 extending from a pipe set of a dye dispensing device to the passages 3 are formed in the lower base 1, and a plurality of first upstream passages 44 extending from the pipe set of the dye dispensing device to the passages 3 are formed in the upper base 2.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a waterless dyeing system, and more particularly to a waterless yarn dyeing system and dye injection device thereof. [Background technology]

[0002] The yarn dyeing apparatus described in Patent Document 1 includes a yarn reeling device, a spraying device, a drying device for heating the yarn, and a yarn winding device for winding the yarn. The spraying device is installed above the yarn.

[0003] During dyeing, the yarn is transported while the dye is sprayed onto the yarn from the nozzle of the spray device, and the dye is absorbed into the yarn.

[0004] This spraying device cannot spray dye on the underside of the yarn, so the dye is distributed to other parts of the yarn that are not sprayed due to the diffusion of the dye, which results in uneven color distribution on the yarn and a decrease in the dyeing quality of the yarn. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Taiwan Registered Utility Model No. M352546U Summary of the Invention [Problem to be solved by the invention]

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a dye ejection device that overcomes at least one shortcoming of the prior art. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention provides a dye injection device that is connected to a pipe module of a dye provider and is used to deliver dye from the dye provider to a plurality of yarns, the dye injection device comprising: The device is configured to have a lower base having a plurality of first downstream flow paths, and an upper base connected to the upper side of the lower base along a vertical direction and having a plurality of first upstream flow paths, thereby defining a plurality of passages between the lower base and the upper base, each of which extends along a first horizontal direction perpendicular to the vertical direction, and which are spaced apart from each other along a second horizontal direction perpendicular to both the vertical direction and the first horizontal direction, each of the passages is connected to one corresponding one of the first downstream passages and one corresponding one of the first upstream passages, and is formed to allow one of the yarns to pass through; Further, a dye injection device is provided in which each of the first downstream flow paths and each of the first upstream flow paths are connected to the pipe module, thereby enabling dye from the dye providing device to be output to the passages corresponding to each of the first downstream flow paths and each of the first upstream flow paths.

[0008] The present invention also provides a waterless yarn dyeing system suitable for outputting dye to a plurality of yarns for dyeing, comprising: a yarn supplying facility used for outputting each of the yarns; a yarn sorting facility downstream of the yarn supplying facility for sorting the yarns; a dyeing facility having the dye injection device and a dye providing device used for outputting the dye, which are disposed downstream of the yarn separating facility; a heating facility disposed downstream of the dye injection device and used for drying the dye on each of the yarns by heating; The present invention also provides a waterless dyeing system for yarns, comprising a yarn winding facility located downstream of the heating facility and used to wind each of the yarns. [Effects of the Invention]

[0009] In the present invention, a passage is provided as a route for the yarn, and while the yarn is passing through the passage, dye is injected from above and below the yarn using multiple first upstream passages and multiple first downstream passages, so the dye is dispersed evenly over the yarn, increasing the efficiency with which the dye is absorbed by the yarn and improving dye quality, while also saving dye. Furthermore, compared to conventional dyeing methods in which the yarn is immersed in dye, this method reduces water usage and eliminates the need for water treatment equipment, thereby saving equipment costs. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is an explanatory diagram showing the configuration of a first embodiment of a yarn dyeing system of the present invention. [Figure 2] FIG. 2 is a block diagram showing a control means, a temperature control means, and a plurality of pump means of the dyeing facility of the first embodiment. [Figure 3] FIG. 2 is a schematic diagram showing a state in which a dye injection device of the dyeing facility of the first embodiment outputs dye to a plurality of yarns. [Figure 4] FIG. 2 is an exploded perspective view of a dye injection device of the dyeing facility according to the first embodiment. [Figure 5] FIG. 2 is a partial cross-sectional view showing a dye injection device of the dyeing facility according to the first embodiment outputting dye onto yarn. [Figure 6] 10 is a partial cross-sectional schematic view of a dye injection device in a second embodiment of the yarn dyeing system of the present invention. FIG. [Figure 7] 10 is a partial cross-sectional schematic view of a dye injection device in a third embodiment of the yarn dyeing system of the present invention. FIG. [Figure 8] 10A and 10B are schematic cross-sectional views of the dye ejection device of the third embodiment, taken at different angles. DETAILED DESCRIPTION OF THE INVENTION

[0011] The present invention will now be described in detail with reference to the accompanying drawings and examples.

[0012] 1 to 3, a first embodiment of the yarn dyeing system of the present invention outputs dye to a plurality of yarns S, and includes a yarn supplying facility 100, a yarn separating facility 200, a dyeing facility 300, a heating facility 400, and a yarn winding facility 500. Incidentally, the dye in this specification refers to a mixture of, for example, a dyeing agent, water, and an auxiliary agent.

[0013] The yarn supplying facility 100 has a plurality of yarn supplying rollers 1001 around which the yarn S is wound. As each yarn supplying roller 1001 rotates, the yarn S is output.

[0014] The yarn separating device 200 is disposed downstream of the yarn supplying device 100 and includes a yarn separating reed 2001, a yarn separating roller shaft 2002, and a yarn separating plate 2003. The yarn separating reed 2001 has a plurality of slits (not shown) formed at intervals. The yarn separating roller shaft 2002 has a plurality of annular grooves (not shown) formed at intervals. The yarn separating plate 2003 also has a plurality of yarn separating slots (not shown) formed at intervals. In this way, the yarns wound onto each yarn supplying roller 1001 pass through the slits, annular grooves, and yarn separating slots, and are sorted, for example, into warp yarns or weft yarns.

[0015] The dyeing facility 300 comprises a dye providing device 10, a dye injecting device 20, a suction device 30, a plurality of pumping means 40 and a control means 50.

[0016] The dye providing device 10 is used to output a plurality of types of dyes of different colors. Specifically, the dye providing device 10 includes a plurality of dye storage cans 101, a plurality of dye supply pipes 102 connected to each of the dye storage cans 101, a dye mixing box 103 connected to each of the dye supply pipes 102 downstream of each of the dye storage cans 101, an agitating means 104 disposed in the dye mixing box 103, a temperature control means 105 disposed in the dye mixing box 103, and a pipe module 106 connected to the dye mixing box 103. The pipe module 106 includes a plurality of dye output pipes 1061 connected to the dye mixing box 103.

[0017] The stirring means 104 has an impeller 1041 arranged in the dye mixing box 103, and a motor 1042 arranged in the dye mixing box 103 for driving the rotation of the impeller 1041. The temperature control means 105 has a heater 1051 arranged in the dye mixing box 103 and used to heat the dye in the dye mixing box 103, and a temperature sensor 1052 arranged in the dye mixing box 103 and used to detect the temperature of the dye in the dye mixing box 103. Incidentally, an electric heating tube or an electric heating plate can be used as the heater 1051.

[0018] 1, 3, and 4, the dye injection device 20 is located downstream of the yarn separating equipment 200. The dye injection device 20 has a lower base 1, an upper base 2 connected to the upper side of the lower base 1 so as to be separable from the lower base 1 in the vertical direction Z, and a plurality of nozzles 4 arranged between the lower base 1 and the upper base 2.

[0019] 3 to 5, the lower base 1 has a first inner surface 11 facing the upper base 2, a first outer surface 12 on the opposite side of the upper base 2 in the vertical direction Z, a plurality of lower grooves 13 extending in a first horizontal direction X perpendicular to the vertical direction Z and formed on the first inner surface 11 at intervals in a second horizontal direction Y perpendicular to both the first horizontal direction X and the vertical direction Z, a plurality of first lower flow paths 14 extending from the first outer surface 12 to each of the lower grooves 13, a plurality of second lower flow paths 15 extending from the first outer surface 12 to each of the lower grooves 13, and a plurality of dye discharge flow paths 16 extending from the first outer surface 12 to each of the lower grooves 13. In this embodiment, the first horizontal direction X is perpendicular to the second horizontal direction Y and perpendicular to the vertical direction Z.

[0020] Each lower groove 13 has two lower inclined surfaces 131 and a lower concave surface 132 connected between the two lower inclined surfaces 131. Furthermore, each lower inclined surface 131 and each lower concave surface 132 of each lower groove 13 are all formed in the lower base 1. Furthermore, each lower concave surface 132 has a curved cross section.

[0021] Each second downstream flow path 15 is located between a corresponding first downstream flow path 14 and a corresponding dye discharge flow path 16, which are parallel to the first horizontal direction X. Each first downstream flow path 14, each second downstream flow path 15, and each dye discharge flow path 16 extend along the vertical direction Z.

[0022] The upper base 2 has a second inner surface 21 that can abut against the first inner surface 11 of the lower base 1, a second outer surface 22 that is on the opposite side of the lower base 1 in the vertical direction Z, a plurality of upper grooves 23 that extend along the first horizontal direction X and are formed on the second inner surface 21 at intervals along the second horizontal direction Y, a plurality of first upstream flow paths 24 that extend from the second outer surface 22 to each upper groove 23, and a plurality of second upstream flow paths 25 that extend from the second outer surface 22 to each upper groove 23.

[0023] Each upper groove 23 faces a corresponding lower groove 13. As a result, each lower groove 13 and its corresponding upper groove 23 define a passage 3 therebetween. Each upper groove 23 has two upper inclined surfaces 231 which are planes extending in a direction oblique to the vertical direction Z, and each upper concave surface 232 between the two upper inclined surfaces 231 has a curved cross section. That is, each passage 3 is defined between the two lower inclined surfaces 131 and lower concave surfaces 132 which form the corresponding lower groove 13, and the two upper inclined surfaces 231 and upper concave surfaces 232 which form the corresponding upper groove 23.

[0024] Each of the first upstream flow paths 24 and each of the second upstream flow paths 25 extends along the vertical direction Z. Each of the first upstream flow paths 24 faces one corresponding first downstream flow path 14. Each of the passages 3 communicates with the corresponding first downstream flow path 14 and the corresponding first upstream flow path 24, and also communicates with the corresponding second downstream flow path 15 and the corresponding second upstream flow path 25, and is formed to allow one yarn S to pass through.

[0025] Each nozzle 4 is disposed in the corresponding first downstream passage 14, the corresponding second downstream passage 15, the corresponding first upstream passage 24, or the corresponding second upstream passage 25, and extends along the vertical direction Z. Each nozzle 4 has a connecting portion 41 used for connecting to the corresponding dye output pipe 1061 on the side away from the corresponding passage 3, and a nozzle head 42 connected to the connecting portion 41 and adjacent to the corresponding passage 3. Each connecting portion 41 is formed with a screw thread for threadably engaging with the corresponding passage (first downstream passage 14 / second downstream passage 15 / first upstream passage 24 / second upstream passage 25). Each nozzle head 42 communicates with the connecting portion 41 belonging to the same nozzle 4. Dye provided from the dye mixing box 103 via the dye output pipe 1061 is provided to the yarn S in each passage 3 by each nozzle head 42.

[0026] Therefore, each dye output pipe 1061 communicates with each of the first downstream paths 14, each of the second downstream paths 15, each of the first upstream paths 24, and each of the second upstream paths 25, respectively.

[0027] 1, 4, and 5, the suction device 30 has a suction member 301 and a plurality of dye discharge pipes 302 (only one is shown in FIG. 1 due to the angle) that communicate with each dye discharge flow path 16 and the suction member 301. The suction member 301 can be, for example, a pump.

[0028] 1 and 3, each pump means 40 is disposed in each dye supply pipe 102 and each dye output pipe 1061. Each pump means 40 has, in order along the dye supply direction, an input pump 401, a temporary storage case 402 communicating with the input pump 401, and an output pump 403 communicating with the temporary storage case 402. Each pump means 40 has a water level meter 404 disposed in the temporary storage case 402 and a scale 405 disposed in the temporary storage case 402. Each pump means 40 in each dye supply pipe 102 is located adjacent to the dye mixing box 103. Each pump means 40 in each dye output pipe 1061 is located adjacent to the dye injection device 20.

[0029] 2 and 3, in this embodiment, a programmable logic controller (PLC) is used as the control means 50. The control means 50 is electrically connected to the heater 1051, the temperature sensor 1052, each input pump 401, and each output pump 403. Thus, the control means 50 controls the heater 1051 based on the dye temperature detected by the temperature sensor 1052 to heat the dye in the dye mixing box 103 to a target temperature, thereby improving dyeing efficiency and uniformity. In addition, the control means 50 controls the input pump 401 and the output pump 403 of each pump means 40 to maintain the dye level of the dye in the corresponding temporary storage case 402 at a target level and to maintain the water pressure of the dye flowing into the output pump 403 at a constant value.

[0030] As shown in FIG. 1 , the heating device 400 is located downstream of the dye injection device 20. The heating device 400 is used to receive each yarn S output from the dye injection device 20. The heating device 400 includes a drying device 4001, a fixing device 4002 downstream of the drying device 4001, and a plurality of yarn separating rollers 4003 that wind each yarn S and are located below the fixing device 4002. Each yarn S is transported by the active or passive rotation of each yarn separating roller 4003. When each yarn S enters the heating device, the drying device 4001 first heats and dries the dye in each yarn S to prevent the dye in each yarn S from adhering to the yarn separating rollers 4003 and causing contamination. The fixing device 4002 then heats each yarn S to fix the color of the dye in each yarn S. Specifically, for example, a heater that blows out heated air can be used as the drying device 4001 and the fixing device 4002, but other types of heating devices can also be used. For example, in another variation of this embodiment, a microwave heating device can be used as the drying device 4001 and the fixing device 4002.

[0031] The yarn winding device 500 is located downstream of the heating device 400. The yarn winding device 500 has a yarn winding roller 5001. By the rotation of the yarn winding roller 5001, the yarn S from the heating device 400 is wound.

[0032] Next, the dyeing process using the yarn dyeing system of the present invention will be described.

[0033] First, each yarn S is output by the rotation of the yarn supply roller 1001.

[0034] Each yarn S is sorted by a yarn sorting reed 2001, a yarn sorting roller shaft 2002, and a yarn sorting plate 2003, and then enters each passage 3 of the dye injection device 20.

[0035] The control means 50 controls the input pumps 401 and output pumps 403 of each dye supply pipe 102 to maintain the dye level in each temporary storage case 402 attached to each dye supply pipe 102 at a constant value, and outputs the dye in each dye storage can 101 to the dye mixing box 103 for mixing. In this embodiment, there are five dye storage cans 101, four of which are used to store four color dyes (CMYK) of cyan, magenta, yellow, and black (Key plate), and the remaining one is used to store transparent (or colorless) dye. Note that the number of dye storage cans 101 is not limited to the present invention; for example, three cans can be installed to store three color dyes (RGB) of red, green, and blue.

[0036] The control means 50 controls the input pumps 401 and output pumps 403 in each dye output pipe 1061 to maintain a constant dye level in each temporary storage case 402 in each dye output pipe 1061. The control means 50 also calculates the amount of dye required for each yarn S and outputs the dye in the dye mixing box 103 to each yarn S in each passage 3 via the first downstream passages 14, the second downstream passages 15, the first upstream passages 24, and the second upstream passages 25. The user can also select an individual dyeing method for each passage 3, for example, by outputting dye via only two passages, the first upstream passage 24 and the first downstream passage 14, or by additionally selecting the second upstream passage 25 and the second downstream passage 15 to output dye via a total of four passages, thereby achieving a more complete and uniform dyeing effect.

[0037] The suction member 301 sucks out and discharges excess dye in each passage 3 via each dye discharge pipe 302 and each dye discharge flow path 16.

[0038] Each yarn S dyed by the dye injection device 20 enters the heating equipment 400. The heating equipment 400 blows heated air onto each yarn S to dry it, thereby fixing the dye on each yarn S.

[0039] The yarn winding roller 5001 winds and stores each yarn S after dyeing from the heating equipment 400.

[0040] Also shown in FIG. 6 is a dye injection device 20' of a second embodiment of the yarn dyeing system of the present invention.

[0041] 5, the second embodiment differs from the first embodiment in that the passages 3, the lower grooves 13, and the upper grooves 23 extend obliquely relative to the first horizontal direction X. Each passage 3 has an inlet 31 adjacent to the dye discharge channel 16 and through which the yarn S can enter, and an outlet 32 ​​for discharging the yarn S at a position higher than the inlet 31. In this embodiment, the dye in the passage 3 flows toward the inlet 31, which facilitates the dye flow to the dye discharge channel 16 and the discharge of the dye. This also allows the dye to be guided to the yarn S in each passage 3, improving the dyeing effect on the yarn S.

[0042] 7 and 8 show a dye injection device 20" of a third embodiment of the yarn dyeing system of the present invention.

[0043] Referring also to FIG. 5, the difference between the third embodiment and the first embodiment is that the dye injection device 20" of the third embodiment does not have the pump means 40 in each nozzle 4 and each dye output pipe 1061 of the first embodiment. In the dye injection device 20" of the third embodiment, two first mounting grooves 17 are formed on the first outer surface 12 of the lower base 1, the positions of which correspond to the first downstream flow paths 14 and the second downstream flow paths 15, respectively. Each of the first downstream flow paths 14 and each of the second downstream flow paths 15 communicates with the corresponding passage 3 and the corresponding first mounting groove 17, respectively.

[0044] Further, two second mounting grooves 26 are formed on the second outer surface 22 of the upper base 2, the positions of which correspond to the first upstream flow paths 24 and the second upstream flow paths 25, respectively.

[0045] Each of the first upstream flow paths 24 and each of the second upstream flow paths 25 communicates with the corresponding passage 3 and the corresponding second mounting groove 26, respectively.

[0046] The dye injection device 20" of the third embodiment has a total of four dye injection modules 5 arranged in each of the first mounting grooves 17 and each of the second mounting grooves 26, and a piezoelectric switch module (not shown) arranged in each dye injection module 5. Each dye injection module 5 has a plurality of dye injection flow paths 51 formed therein, each of which communicates with the passage 3. Each dye injection flow path 51 of each dye injection module 5 communicates with each of the first downstream flow paths 14 and each of the second downstream flow paths 15, and each of the first upstream flow paths 24 and each of the second upstream flow paths 25 further communicates with each of the dye output pipes 1061. In this third embodiment, In this embodiment, by controlling the piezoelectric switch module, the dye in the dye mixing box 103 can be output to each yarn S of each passage 3 via each dye output pipe 1061 and each dye injection passage 51. Incidentally, in a modified example of this embodiment, it is also possible to form only the first mounting groove 17 and each first downstream passage 14 in the lower base 1, or to form only the second mounting groove 26 and each first upstream passage 24 in the upper base 2. In this way, as long as the passage 3 for outputting the dye can be defined, it is not limited to forming the grooves defining the passage 3 in either or both of the lower base 1 and the upper base 2.

[0047] The inventive yarn waterless dyeing system of the present invention has the following advantages:

[0048] First, in order to prevent each thread S from shaking while being transported, the route along which each thread S is transported is limited to each passage 3 defined between the lower base 1 and the upper base 2, thereby maintaining stability. Then, by outputting dye from above and below each passage 3 defined in this manner, the dye is evenly dispersed onto each thread S, which increases the efficiency with which the dye is absorbed into the thread, improves dyeing quality, and also saves dye.

[0049] Next, the dye injection device 20 of the present invention has multiple flow paths that output dye to the yarn S along the extension direction of each passage 3, which allows for increased dyeing efficiency and reduced amounts of dye used for dyeing compared to conventional technology in which only one nozzle is provided, thereby saving on dye costs.

[0050] In addition, the cross-sectional contours of the two lower inclined surfaces 131, two upper inclined surfaces 231, lower concave surfaces 132 and upper concave surfaces 232 corresponding to each passage 3 are smooth, which reduces the possibility of the yarn S passing through a passage 3 coming into contact with the two lower inclined surfaces 131, two upper inclined surfaces 231, lower concave surfaces 132 and upper concave surfaces 232 corresponding to the passage 3 and being damaged or broken.

[0051] Furthermore, since each nozzle 4 is formed to extend along the vertical direction Z, the dye can be supplied to each passage 3 via each nozzle 4 via the shortest route, thereby improving the dye supply efficiency.

[0052] By providing each dye injection module 5, the structure of the dye injection device 20 can be simplified and the space required for its placement can be saved.

[0053] By configuring each dye discharge flow path 16, it becomes possible to discharge excess dye from each passage 3, and it is possible to prevent a situation in which too much dye is provided to the yarn S.

[0054] By using the dye injection device 20, the dye output method can be selected, so for example, a dyeing method in which the dye is output only from above or below the yarn S is possible, making it possible to adopt an appropriate dyeing method as needed.

[0055] Furthermore, by using the dye provider 10 and dye injector 20 of the dyeing equipment 300, the waterless yarn dyeing system of the present invention can dye the yarn S uniformly by injecting the dye, which reduces the amount of water used compared to conventional dyeing methods in which the yarn is immersed in dye, and also eliminates the need for water treatment equipment, thereby saving on equipment costs.

[0056] Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various modifications are possible without departing from the spirit of the present invention. [Explanation of symbols]

[0057] 100 Yarn supply equipment 1001 Yarn supply roller 200 Yarn separation equipment 2001 Thread separation reed 2002 Yarn separation roller shaft 2003 Thread separation board 300 dyeing facilities 10 Dye providing device 101 Dye storage can 102 dye supply pipe 103 Dye mixing box 104 Stirring means 1041 Impeller 1042 Motor 105 Temperature control means 1051 Heater 1052 Temperature Sensor 106 Pipe Module 1061 Dye Output Pipe 20 Dye injection device 20' dye injection device 20” dye injection equipment 1 Lower pedestal 11 First inner surface 12 First outer surface 13 Lower gutter 131 Lower Slope 132 Lower concave surface 14 First downstream channel 15 Second downstream channel 16 Dye discharge channel 17 First mounting groove 2 Upper pedestal 21 Second inner surface 22 Second outer surface 23 Upper Ditch 231 Upper Slope 232 Upper concave 24 First upstream channel 25 Second upstream channel 26 Second mounting groove 3 aisles 31 Entrance 32 Exit 4 nozzles 41 Connection 42 nozzle head 5 Dye Injection Module 51 Dye injection channel 30 Suction device 301 Suction member 302 Dye Output Pipe 40 Pump means 401 Input pump 402 Temporary Storage Case 403 Output Pump 404 Water Level Meter 405 scale 50 Control Means 400 Heating equipment 4001 Drying equipment 4002 Fixing device 4003 Yarn separation roller 500 Yarn winding equipment 5001 Yarn winding roller X First horizontal direction Y Second horizontal direction Z vertical direction S thread

Claims

1. a dye injection device in communication with a pipe module of a dye provider for outputting dye from the dye provider onto a plurality of yarns, the dye injection device comprising: The device is configured to have a lower base having a plurality of first downstream flow paths, and an upper base connected to the upper side of the lower base along a vertical direction and having a plurality of first upstream flow paths, thereby defining a plurality of passages between the lower base and the upper base, each of which extends along a first horizontal direction perpendicular to the vertical direction, and which are spaced apart from each other along a second horizontal direction perpendicular to both the vertical direction and the first horizontal direction, each of the passages is connected to one corresponding one of the first downstream passages and one corresponding one of the first upstream passages, and is formed to allow one of the yarns to pass through; Further, each of the first downstream flow paths and each of the first upstream flow paths are connected to the pipe module, thereby enabling dye from the dye providing device to be output to the passages corresponding to each of the first downstream flow paths and each of the first upstream flow paths.

2. the pipe module has a plurality of dye output pipes, each of which is used to communicate with one of the first upstream flow paths and the first downstream flow paths; the lower base has a first outer surface opposite to the upper base in the vertical direction, and each of the first downstream flow paths extends from the first outer surface to the corresponding passage; the upper base has a second outer surface opposite to the lower base in the vertical direction, and each of the first upstream flow paths extends from the second outer surface to the corresponding passage; the dye ejection device has a plurality of nozzles arranged in each of the first upstream flow paths and each of the first downstream flow paths, the nozzles extending along the vertical direction; 2. The dye ejection device of claim 1, wherein each of the nozzles has a connection portion connected to the corresponding dye output pipe at a position spaced from the corresponding passage, and a nozzle head connected to the connection portion and adjacent to the corresponding passage.

3. 2. The dye injection device according to claim 1, wherein each of said first upstream flow paths is formed to face one corresponding one of said first downstream flow paths.

4. 2. The dye injection device according to claim 1, wherein each of the passages is defined between two lower inclined surfaces formed on the lower base and a lower concave surface connected between the two lower inclined surfaces, and two upper inclined surfaces formed on the upper base and adjacent to the two lower inclined surfaces, respectively, and an upper concave surface connected between the two upper inclined surfaces, and wherein the lower concave surfaces and the upper concave surfaces defining each of the passages both have curved cross sections.

5. 2. The dye injection device according to claim 1, wherein the lower base is formed with a plurality of dye discharge flow paths that are connected to the passages, respectively, to discharge the dye from the passages.

6. a plurality of second downstream flow paths are formed in the lower base, each of which is connected to one of the passages and between the corresponding first downstream flow path and the corresponding dye discharge flow path; a plurality of second upstream flow paths are formed in the upper base, each of which is in communication with one of the passages; 6. The dye injection device according to claim 5, wherein the dye provided from the dye providing device to the pipe module is output to the corresponding passages through each of the second upstream flow paths and each of the second downstream flow paths.

7. 2. The dye injection device of claim 1, wherein each of the passages extends along a direction oblique to the first horizontal direction and is formed to have an inlet for the corresponding yarn to enter and an outlet for the corresponding yarn to exit at a position higher than the inlet.

8. the lower base has a first inner surface facing the upper base, and the upper base has a second inner surface configured to be connectable to the lower base and capable of abutting against the first inner surface; 2. The dye injection device of claim 1, wherein each of the passages has a lower groove formed in the first inner surface and communicating with the corresponding first downstream passage, and an upper groove formed in the second inner surface and communicating with the corresponding first upstream passage.

9. the lower base has a first outer surface formed on an opposite side of the upper base in the vertical direction, and a first mounting groove is formed in the first outer surface; Each of the first downstream flow paths is formed to communicate with the corresponding passage and the corresponding first mounting groove, the upper base has a second outer surface formed on the opposite side of the lower base in the vertical direction, and a second mounting groove is formed in the second outer surface; Each of the first upstream flow paths is formed to communicate with the corresponding passage and the corresponding second mounting groove, the dye injection device has two dye injection modules disposed in the first mounting groove and the second mounting groove, respectively; 2. The dye injection device according to claim 1, wherein each of the dye injection modules has a plurality of dye injection passages, each of which communicates with each of the first downstream passages, each of the first upstream passages, and the pipe module.

10. 1. A waterless yarn dyeing system suitable for outputting dye onto a plurality of yarns for dyeing, comprising: a yarn supplying facility used for outputting each of the yarns; a yarn sorting facility downstream of the yarn supplying facility for sorting the yarns; a dyeing facility having the dye injection device according to claim 1 and a dye providing device used for outputting the dye, the dye injection device being disposed downstream of the yarn separating facility; a heating facility disposed downstream of the dye injection device and used for drying the dye on each of the yarns by heating; a yarn winding facility located downstream of the heating facility and used to wind each of the yarns.

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