Blended yarn preparation device and preparation process

Abstract

The invention discloses a blended yarn preparation device and process, the preparation device comprises a material soaking box, a leading-in roller and a leading-out roller are rotatably connected to the material soaking box, a first yarn guiding roller and a second yarn guiding roller are rotatably connected to the interior of the material soaking box, a first yarn loosening roller is arranged between the first yarn guiding roller and the second yarn guiding roller, and a second yarn loosening roller is arranged between the first yarn loosening roller and the second yarn guiding roller. Blended yarn guided in from the guide-in roller bypasses the first yarn guide roller, the first yarn loosening roller and the second yarn guide roller and is guided out through the guide-out roller, and the outer wall of the first yarn loosening roller is attached to the passing blended yarn. The rotating direction of the first yarn loosening roller is opposite to the twisting spiral direction of the blended yarn, so that the first yarn loosening roller loosens the blended yarn in the rotating process. The first yarn loosening roller rotates to drive the blended yarn to rotate in the axial direction, so that the blended yarn between the first yarn guide roller and the first yarn loosening roller is loosened slightly, and size can permeate into the blended yarn conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of blended yarn preparation, and in particular to a blended yarn preparation device and a preparation process. Background Art

[0002] Blended yarn is a yarn made by mixing two or more different types of fibers. It achieves performance complementarity and cost optimization by combining natural fibers (such as cotton, linen, etc.) with chemical fibers (such as polyester, viscose, nylon, etc.).

[0003] In the production process of blended yarns of different fibers, the blended yarns need to be sizing to improve their performance. In the prior art, the blended yarns are immersed in a sizing agent, sizing, and then dried. For example, Chinese Patent Publication No. CN113445233A discloses a polyester-cotton blended yarn sizing device and process thereof. The device winds the polyester-cotton blended yarn around a guide pulley, which is then used to pull the polyester-cotton blended yarn into a sizing chamber. Each section of yarn is immersed in the sizing solution for 8 minutes. An ultrasonic generator continuously oscillates, and an impurity removal device is pressed against the polyester-cotton blended yarn, causing each yarn to embed into the serrated recess of the impurity removal section, thereby achieving the effect of removing hairiness from the polyester-cotton blended yarn. However, this type of device directly immerses the blended yarn in the sizing solution, making it difficult for the sizing solution to effectively penetrate the center of the yarn, resulting in insufficient sizing absorption by the yarn. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems and provide a blended yarn preparation device and preparation process.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A blended yarn preparation device comprises a soaking box, wherein the soaking box is rotatably connected to an inlet roller and an outlet roller, and the inside of the soaking box is rotatably connected to a first guide roller and a second guide roller, and a first loosening roller is arranged between the first guide roller and the second guide roller, and the first loosening roller is rotatably connected in the soaking box, and the axes of the inlet roller, the outlet roller and the first guide roller and the second guide roller are arranged parallel to each other, and the axis of the first loosening roller is perpendicular to the axis of the first guide roller, and the blended yarn introduced on the inlet roller passes around the first guide roller, the first loosening roller and the second guide roller and is discharged through the outlet roller, and the outer wall of the first loosening roller is in contact with the passing blended yarn, and the rotation direction of the first loosening roller is opposite to the twisting spiral direction of the blended yarn, so that the first loosening roller loosens the blended yarn during rotation.

[0007] Furthermore, the dipping box is rotatably connected to a first squeezing roller and a second squeezing roller arranged in pairs, the first squeezing roller and the second squeezing roller are located on the side of the lead-out roller away from the dipping box, and the first squeezing roller and the second squeezing roller are respectively arranged on the upper and lower sides of the blended yarn to squeeze the passing blended yarn.

[0008] Furthermore, one side of the dipping box is rotatably connected to a first tightening roller and a third guide roller, the third guide roller is located on the side of the lead-out roller away from the lead-in roller, the first tightening roller is located between the lead-out roller and the third guide roller, the axis of the third guide roller is parallel to the axis of the lead-out roller, the axis of the first tightening roller is perpendicular to the axis of the lead-out roller, the blended yarn between the lead-out roller and the third guide roller is attached to the outer surface of the first tightening roller, and the rotation direction of the first tightening roller is opposite to the rotation direction of the first loosening roller; the first squeezing roller and the second squeezing roller are located between the first tightening roller and the lead-out roller.

[0009] Furthermore, a material receiving box is fixedly connected to the outer wall of the soaking box away from the introduction roller. The material receiving box is located below the first yarn tightening roller. A reflux hole connected to the material receiving box is opened on the side wall of the soaking box.

[0010] Furthermore, a driving motor is provided on the soaking box, and a first rotating shaft is fixedly connected to the output shaft of the driving motor, and the first tightening roller is fixedly connected to the first rotating shaft; the first rotating shaft is fixedly connected to the first gear, and the soaking box is rotatably connected to the second rotating shaft, and the second rotating shaft is fixedly connected to the second gear and the first synchronous wheel, and the first gear and the second gear are meshed with each other to form a gear transmission, and the center of the first loosening roller is fixedly connected to the third rotating shaft, and the third rotating shaft is rotatably connected to the soaking box, and the second synchronous wheel is fixedly connected to the third rotating shaft, and the first synchronous wheel and the second synchronous wheel are outer-circuited with a synchronous belt so that the first synchronous wheel and the second synchronous wheel form a synchronous belt transmission.

[0011] Furthermore, a drying box is provided on the side of the lead-out roller away from the soaking box, and an air inlet pipe is provided on the drying box, and the air inlet pipe transports dry and heated gas into the drying box, and an exhaust cylinder is fixedly connected to the drying box, and the exhaust cylinder is a hollow structure and is connected to the inner cavity of the drying box, and an exhaust fan is rotatably connected to the inner cavity of the exhaust cylinder, and the air outlet end of the exhaust fan is connected to the air outlet pipe, and the air outlet pipe extends to the top of the material receiving box and is installed with an air blowing pipe, and an air blowing hole is provided on the air blowing pipe and the air blowing hole is directed towards the blended yarn passing through the top of the material receiving box; a wire inlet hole is provided on the side of the drying box close to the soaking box, and a wire outlet hole is provided on the side of the drying box away from the soaking box, and the blended yarn passes through the wire inlet hole into the drying box for drying and then passes through the wire outlet hole.

[0012] Furthermore, a fourth yarn guide roller is rotatably connected in the drying box. The fourth yarn guide rollers are arranged in two rows, upper and lower, and each row has multiple fourth yarn guide rollers. The fourth yarn guide rollers are used to wind the blended yarns around the fourth yarn guide rollers in sequence from top to bottom.

[0013] Furthermore, the outer walls of the lead-in roller, the lead-out roller, the first yarn guide roller, the second yarn guide roller, the third yarn guide roller and the fourth yarn guide roller are provided with V-shaped grooves around their circumferences, and the V-shaped grooves axially limit the bypassed blended yarns.

[0014] Furthermore, the air inlet pipe is arranged at the bottom of the drying box, and the air exhaust cylinder is fixed on the top of the drying box.

[0015] A blended yarn preparation process, using the above-mentioned blended yarn preparation device, is carried out according to the following steps:

[0016] Step S1, injecting a slurry for sizing the blended yarn into the dipping box, winding the blended yarn through an inlet roller and a first yarn guide roller so that the blended yarn is immersed in the slurry in the dipping box, and the blended yarn soaked in the slurry is sequentially wound through a second yarn guide roller, a lead-out roller, and a third yarn guide roller, and then passes out of the dipping box. Then, the blended yarn is passed through the inlet hole of the drying box into the drying box, and is wound through a fourth yarn guide roller and then passes out of the outlet hole of the drying box.

[0017] Step S2: When the blended yarn passes through the first yarn guide roller and the second yarn guide roller, the blended yarn is attached to the outer surface of the first yarn loosening roller, and the driving motor is started to drive the first yarn loosening roller to rotate so that the blended yarn attached to the surface is twisted in the loosening direction, so that the twisted part of the blended yarn is loosened and soaked in the slurry; the blended yarn is pulled away from the first yarn loosening roller and naturally returns to its original twisted state;

[0018] Step S3: After the blended yarn passes through the lead-out roller, the blended yarn enters between the first squeezing roller and the second squeezing roller, and the first squeezing roller and the second squeezing roller clamp and squeeze the blended yarn passing through to squeeze out excess size in the blended yarn;

[0019] Step S4: The blended yarn passes through the first tightening roller before being wound around the third yarn guide roller, and the blended yarn is adhered to the outer surface of the first tightening roller. The driving motor synchronously drives the first tightening roller to rotate so that the blended yarn adhered to the surface is twisted in the twisting direction, so that the blended yarn is twisted and squeezed out the internal size and shaped;

[0020] Step S5: Winding the blended yarn into a drying box, blowing hot air into the drying box through the air inlet pipe to dry the blended yarn in the drying box; and using the exhaust fan in the exhaust pipe to transport the hot air that has dried the residual heat in the drying box to the blow pipe, and blown out from the blow pipe to the blended yarn above the receiving box;

[0021] 6. The blended yarn dried in the drying oven is passed through the outlet hole to the spinning and winding device for winding.

[0022] The present invention provides a blended yarn preparation device and preparation process, which have the following beneficial effects: the blended yarn is introduced into the dipping box through the cooperation of the introduction roller, the first guide roller, the second guide roller, and the outlet roller, the dipping box is injected with sizing liquid for sizing, the blended yarn is immersed in the sizing liquid for sizing, the first loosening roller rotates to drive the blended yarn to rotate axially, so that the blended yarn between the first guide roller and the first loosening roller is loosened a little, thereby facilitating the sizing liquid to penetrate into the blended yarn, and the blended yarn located between the first loosening roller and the second guide roller automatically returns to the normal twisting state after passing through the first loosening roller, so that the blended yarn returns to normal, at this time the blended yarn is separated from the first loosening roller to release the loosening state, and when the blended yarn returns to the twisted state, it is squeezed before the twisting strands, so that the sizing liquid soaked on the surface of the twisting strands is squeezed into the twisting strands, thereby improving the penetration effect of the sizing liquid into the blended yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings:

[0024] Figure 1 A schematic structural diagram of a blended yarn preparation device provided by the present invention;

[0025] Figure 2 A schematic side view of the structure of an introduction roller in a blended yarn preparation device provided by the present invention;

[0026] Figure 3 A schematic side view of the structure of a first yarn loosening roller and a blended yarn in a blended yarn preparation device provided by the present invention;

[0027] Figure 4 A schematic side view of the structure of a first tightening roller and a blended yarn in a blended yarn preparation device provided by the present invention;

[0028] Figure 5 for Figure 1 Schematic diagram of the local structure of part A in the middle.

[0029] Explanation of the numbers in the figure: 1. Dipping box; 2. Inlet roller; 3. Outlet roller; 4. First yarn guide roller; 5. Second yarn guide roller; 6. First yarn loosening roller; 7. First squeezing roller; 8. Second squeezing roller; 9. First yarn tightening roller; 10. Third yarn guide roller; 11. Material receiving box; 111. Return hole; 12. Driving motor; 13. First rotating shaft; 14. First gear; 15. Second rotating shaft; 16. Second gear; 17. First synchronous wheel; 18. Third rotating shaft; 19. Second synchronous wheel; 20. Drying box; 201. Wire inlet hole; 202. Wire outlet hole; 21. Air inlet pipe; 22. Exhaust cylinder; 23. Exhaust fan; 24. Exhaust pipe; 25. Blowing pipe; 26. Fourth yarn guide roller; 27. V-groove; 90. Blended yarn. DETAILED DESCRIPTION

[0030] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0033] like Figure 1-Figure 5 As shown, a blended yarn preparation device includes a soaking box 1, the soaking box 1 is rotatably connected to an inlet roller 2 and an outlet roller 3, the soaking box 1 is rotatably connected to a first guide roller 4 and a second guide roller 5, a first loosening roller 6 is arranged between the first guide roller 4 and the second guide roller 5, the first loosening roller 6 is rotatably connected in the soaking box 1, the axes of the inlet roller 2, the outlet roller 3 and the first guide roller 4 and the second guide roller 5 are arranged parallel to each other, the axis of the first loosening roller 6 is perpendicular to the axis of the first guide roller 4, the blended yarn 90 introduced on the inlet roller 2 passes around the first guide roller 4, the first loosening roller 6 and the second guide roller 5 and is discharged through the outlet roller 3, the outer wall of the first loosening roller 6 is in contact with the passing blended yarn 90, and the rotation direction of the first loosening roller 6 is opposite to the twisting spiral direction of the blended yarn 90, so that the first loosening roller 6 loosens the blended yarn 90 during rotation.

[0034] The above-mentioned technical scheme is adopted, and the blended yarn 90 is introduced into the dipping box 1 through the cooperation of the introduction roller 2, the first guide roller 4, the second guide roller 5, and the outlet roller 3. The dipping box 1 is injected with sizing liquid for sizing, and the blended yarn is immersed in the sizing liquid for sizing. The first loosening roller 6 rotates to drive the blended yarn 90 to rotate axially, so that the blended yarn 90 between the first guide roller 4 and the first loosening roller 6 is loosened a little, thereby facilitating the sizing liquid to penetrate into the interior of the blended yarn 90. The blended yarn 90 located between the first loosening roller 6 and the second guide roller 5 automatically returns to the normal twisting state after passing through the first loosening roller 6, so that the blended yarn 90 returns to normal. At this time, the blended yarn 90 is separated from the first loosening roller 6 and the loosening state is released. When the blended yarn 90 returns to the twisted state, it is squeezed before the twisting strands, so that the sizing liquid soaked on the surface of the twisting strands is squeezed into the twisting strands, thereby improving the penetration effect of the sizing liquid into the blended yarn 90.

[0035] Specifically, the dipping box is rotatably connected to a first squeezing roller 7 and a second squeezing roller 8 arranged in pairs. The first squeezing roller 7 and the second squeezing roller 8 are located on the side of the lead-out roller 3 away from the dipping box. The first squeezing roller 7 and the second squeezing roller 8 are respectively arranged on the upper and lower sides of the blended yarn 90 to squeeze the passing blended yarn 90, so that the size penetrates into the blended yarn and squeezes out the excess size.

[0036] Specifically, a first tightening roller 9 and a third guide roller 10 are rotatably connected to one side of the dipping tank 1. The third guide roller 10 is located on the side of the outlet roller 3 away from the inlet roller 2. The first tightening roller 9 is located between the outlet roller 3 and the third guide roller 10. The axis of the third guide roller 10 is parallel to the axis of the outlet roller 3, while the axis of the first tightening roller 9 is perpendicular to the axis of the outlet roller 3. The blended yarn 90 between the outlet roller 3 and the third guide roller 10 adheres to the outer surface of the first tightening roller 9. The rotation direction of the first tightening roller 9 is opposite to that of the first loosening roller 6. The first squeezing roller 7 and the second squeezing roller 8 are located between the first tightening roller 9 and the outlet roller 3. The twisting of the tightening rollers drives the blended yarn 90 to rotate, tightening the blended yarn 90 and squeezing the slurry inside. The blended yarn 90 is squeezed when passing through the first and second squeezing rollers 7 and 8, and the twisting of the blended yarn 90 by the tightening rollers reshapes the blended yarn 90 into a cylindrical shape.

[0037] Specifically, a receiving box 11 is fixedly connected to the outer wall of the soaking box 1 on the side away from the introduction roller 2. The receiving box 11 is located below the first yarn tightening roller 9. A reflux hole 111 is opened on the side wall of the soaking box 1 and communicates with the receiving box 11. Because the receiving box 11 is located below the first yarn tightening roller 9, the excess slurry squeezed out of the blended yarn 90 above falls into the receiving box 11 and flows back into the soaking box 1 through the reflux hole 111 of the receiving box 11.

[0038] Specifically, the dipping box 1 is provided with a driving motor 12, the output shaft of which is fixedly connected to a first rotating shaft 13, and the first tightening roller 9 is fixedly connected to the first rotating shaft 13; the first rotating shaft 13 is fixedly connected to a first gear 14, the dipping box is rotatably connected to a second rotating shaft 15, the second rotating shaft 15 is fixedly connected to a second gear 16 and a first synchronous wheel 17, the first gear 14 and the second gear 16 meshing to form a gear transmission, the center of the first loosening roller 6 is fixedly connected to a third rotating shaft 18, the third rotating shaft 18 is rotatably connected to the dipping box 1, the third rotating shaft 18 is fixedly connected to a second synchronous wheel 19, and the first synchronous wheel 17 and the second synchronous wheel 19 are covered with a synchronous belt so that the first synchronous wheel 17 and the second synchronous wheel 19 form a synchronous belt transmission. Through the transmission of the gears and synchronous wheels, the first tightening roller 9 and the first loosening roller 6 rotate in opposite directions, respectively realizing the tightening and loosening of the blended yarn 90.

[0039] Specifically, a drying box 20 is provided on the side of the lead-out roller 3 away from the dipping box 1. The drying box 20 is provided with an air inlet pipe 21. The air inlet pipe 21 conveys dry heating gas into the drying box 20. The drying box 20 is fixedly connected with an exhaust cylinder 22. The exhaust cylinder 22 is a hollow structure and is connected to the inner cavity of the drying box 20. An exhaust fan 23 is rotatably connected to the inner cavity of the exhaust cylinder 22. The outlet end of the exhaust fan 23 is connected to the outlet pipe. 24, the air outlet pipe 24 extends to the top of the material receiving box 11 and is installed with an air blowing pipe 25, the air blowing pipe 25 is provided with an air hole and the air hole is directed toward the blended yarn 90 passing above the material receiving box 11; the drying box 20 is provided with an inlet hole 201 on the side close to the impregnation box 1, and the drying box 20 is provided with an outlet hole 202 on the side away from the impregnation box 1. The blended yarn 90 passes through the inlet hole 201 into the drying box 20 for drying and then passes out from the outlet hole 202. The blended yarn 90 is dried by conveying dry heating gas into the drying box 20, and at the same time, the exhaust fan 23 extracts the dry gas in the drying box 20 so that new dry gas is introduced into the drying box 20. After the dry gas is extracted, it is blown out to the blended yarn 90 above the receiving box 11, so that the excess slurry squeezed out from the surface of the blended yarn 90 is blown into the receiving box 11. At the same time, the blowing pipe 25 uses the heating gas with residual heat used for drying to preheat the blended yarn 90 that has not entered the drying box 20, thereby increasing the temperature increase speed of the blended yarn 90 after entering the drying box 20 and improving the drying efficiency.

[0040] Specifically, fourth guide rollers 26 are rotatably connected within the drying box 20. The fourth guide rollers 26 are arranged in two upper and lower rows, with multiple fourth guide rollers 26 provided in each row. The fourth guide rollers 26 are used to sequentially wind the blended yarn 90 vertically around the fourth guide rollers 26. By arranging the fourth guide rollers 26 in two upper and lower rows, with multiple fourth guide rollers 26 provided in each row, the blended yarn 90 is wound vertically around the fourth guide rollers 26, thereby extending the length of the blended yarn 90 within the drying box 20. This prolongs the time the blended yarn 90 spends within the drying box 20 when the blended yarn 90 is continuously output from the drying box 20, thereby extending the drying time and ensuring that the blended yarn 90 is fully dried.

[0041] Specifically, the outer walls of the lead-in roller 2, the lead-out roller 3, the first guide roller, the second guide roller, the third guide roller 10, and the fourth guide roller 26 are provided with V-shaped grooves 27. The V-shaped grooves 27 axially limit the passing blended yarn 90. The blended yarn 90 is axially limited by the V-shaped grooves 27, thereby preventing axial deviation of the blended yarn 90.

[0042] Specifically, the air inlet pipe 21 is provided at the bottom of the drying box 20, and the air pump 22 is fixed to the top of the drying box 20. The hot air entering the drying box 20 moves upward from the bottom and fully contacts the blended yarn 90 inside, thereby fully drying the blended yarn 90.

[0043] In one embodiment, a process for preparing a blended yarn employs the above-mentioned blended yarn preparation device and comprises the following steps:

[0044] Step S1: injecting a slurry for sizing the blended yarn 90 into the dipping box 1, winding the blended yarn 90 through the introduction roller 2 and the first guide roller so that the blended yarn 90 is immersed in the slurry in the dipping box 1, and the blended yarn 90 soaked in the slurry is sequentially wound around the second guide roller, the outlet roller 3, and the third guide roller 10, and then passes through the dipping box 1. Then, the blended yarn 90 is passed into the drying box 20 through the wire inlet hole 201 of the drying box 20, and is wound around the fourth guide roller 26 and then passes through the wire outlet hole 202 of the drying box 20;

[0045] In step S2, when the blended yarn 90 passes through the first yarn guide roller and the second yarn guide roller, the blended yarn 90 is attached to the outer surface of the first yarn loosening roller 6, and the drive motor 12 is started to drive the first yarn loosening roller 6 to rotate so that the blended yarn 90 attached to its surface is twisted in the loosening direction, so that the twisted part of the blended yarn 90 is loosened and soaked in the slurry; the blended yarn 90 is pulled away from the first yarn loosening roller 6 and naturally returns to its original twisted state;

[0046] Step S3: After the blended yarn 90 passes through the lead-out roller 3, the blended yarn 90 enters between the first squeezing roller 7 and the second squeezing roller 8. The first squeezing roller 7 and the second squeezing roller 8 clamp and squeeze the blended yarn 90 passing through, squeezing out excess slurry in the blended yarn 90.

[0047] In step S4, the blended yarn 90 passes through the first tightening roller 9 before being wound around the third yarn guide roller 10, and the blended yarn 90 is adhered to the outer surface of the first tightening roller 9. The driving motor 12 synchronously drives the first tightening roller 9 to rotate so that the blended yarn 90 adhered to its surface is twisted in the twisting direction, so that the blended yarn 90 is twisted and tightened, the internal size is squeezed out, and the shape is shaped;

[0048] Step S5: The blended yarn 90 is wound into the drying box 20, and hot air is blown into the drying box 20 through the air inlet pipe 21 to dry the blended yarn 90 in the drying box 20; the hot air that has dried the residual heat in the drying box 20 is transported to the blowing pipe 25 through the exhaust fan 23 in the exhaust pipe, and is blown out from the blowing pipe 25 to the blended yarn 90 above the receiving box 11;

[0049] In step S6, the blended yarn 90 dried in the drying box 20 is passed through the yarn outlet 202 and is taken up into the spinning and winding device for winding.

[0050] The parts not involved in this technical solution can be implemented using existing technologies.

[0051] The basic principles, main features, and characteristics of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention includes the appended claims and their equivalents.

Claims

1. A blended yarn preparation device, characterized in that: The invention comprises a dipping box (1), wherein the dipping box (1) is rotatably connected to an inlet roller (2) and an outlet roller (3), wherein the inside of the dipping box (1) is rotatably connected to a first yarn guide roller (4) and a second yarn guide roller (5), wherein a first yarn loosening roller (6) is provided between the first yarn guide roller (4) and the second yarn guide roller (5), wherein the first yarn loosening roller (6) is rotatably connected to the inside of the dipping box (1), wherein the axes of the inlet roller (2), the outlet roller (3), the first yarn guide roller (4) and the second yarn guide roller (5) are arranged parallel to each other, The axis of the first yarn loosening roller (6) is perpendicular to the axis of the first yarn guide roller (4); the blended yarn (90) introduced on the introduction roller (2) passes over the first yarn guide roller (4), the first yarn loosening roller (6) and the second yarn guide roller (5) and is led out through the lead-out roller (3); the outer wall of the first yarn loosening roller (6) is in contact with the blended yarn (90) passing through; the rotation direction of the first yarn loosening roller (6) is opposite to the twisting spiral direction of the blended yarn (90), so that the first yarn loosening roller (6) loosens the blended yarn (90) during rotation.

2. A blended yarn preparation device according to claim 1, characterized in that: The dipping box (1) is rotatably connected to a first squeezing roller (7) and a second squeezing roller (8) arranged in pairs. The first squeezing roller (7) and the second squeezing roller (8) are located on the side of the outlet roller (3) away from the dipping box. The first squeezing roller (7) and the second squeezing roller (8) are respectively arranged on the upper and lower sides of the blended yarn (90) to squeeze the blended yarn (90) passing through.

3. The blended yarn preparation device according to claim 2, characterized in that: One side of the dipping box (1) is rotatably connected to a first tightening roller (9) and a third guide roller (10), the third guide roller (10) is located on the side of the outlet roller (3) away from the introduction roller (2), the first tightening roller (9) is located between the outlet roller (3) and the third guide roller (10), the axis of the third guide roller (10) is parallel to the axis of the outlet roller (3), the axis of the first tightening roller (9) is perpendicular to the axis of the outlet roller (3), the blended yarn (90) between the outlet roller (3) and the third guide roller (10) is attached to the outer surface of the first tightening roller (9), the rotation direction of the first tightening roller (9) is opposite to the rotation direction of the first loosening roller (6); the first squeezing roller (7) and the second squeezing roller (8) are located between the first tightening roller (9) and the outlet roller (3).

4. The blended yarn preparation device according to claim 3, characterized in that: A material receiving box (11) is fixedly connected to the outer wall of the soaking box (1) on the side away from the introduction roller (2), and the material receiving box (11) is located below the first yarn tightening roller (9). A reflux hole (111) connected to the material receiving box (11) is opened on the side wall of the soaking box (1).

5. The blended yarn preparation device according to claim 4, characterized in that: The soaking box (1) is provided with a driving motor (12), the output shaft of the driving motor (12) is fixedly connected to a first rotating shaft (13), and the first tightening roller (9) is fixedly connected to the first rotating shaft (13); the first rotating shaft (13) is fixedly connected to a first gear (14), the soaking box is rotatably connected to a second rotating shaft (15), the second rotating shaft (15) is fixedly connected to a second gear (16) and a first synchronous wheel (17), the first gear (14) and the second gear (16) are meshed to form a gear transmission, the center of the first loosening roller (6) is fixedly connected to a third rotating shaft (18), the third rotating shaft (18) is rotatably connected to the soaking box (1), the third rotating shaft (18) is fixedly connected to a second synchronous wheel (19), the first synchronous wheel (17) and the second synchronous wheel (19) are provided with a synchronous belt on their outer shells so that the first synchronous wheel (17) and the second synchronous wheel (19) form a synchronous belt transmission.

6. The blended yarn preparation device according to claim 3, characterized in that: A drying box (20) is provided on the side of the derivation roller (3) away from the dipping box (1), and an air inlet pipe (21) is provided on the drying box (20). The air inlet pipe (21) conveys dry heating gas into the drying box (20). An exhaust cylinder (22) is fixedly connected to the drying box (20), and the exhaust cylinder (22) is a hollow structure and is connected to the inner cavity of the drying box (20). An exhaust fan (23) is rotatably connected in the inner cavity of the exhaust cylinder (22), and the exhaust end of the exhaust fan (23) is connected to the exhaust pipe (24). The air outlet pipe (24) extends to the top of the material receiving box (11) and is equipped with an air blowing pipe (25). The air blowing pipe (25) is provided with an air blowing hole, and the air blowing hole faces the blended yarn (90) passing through the top of the material receiving box (11); the drying box (20) is provided with an inlet hole (201) on the side close to the soaking box (1), and the drying box (20) is provided with an outlet hole (202) on the side away from the soaking box (1). The blended yarn (90) passes through the inlet hole (201) into the drying box (20) and is dried and then passes out from the outlet hole (202).

7. The blended yarn preparation device according to claim 6, characterized in that: A fourth yarn guide roller (26) is rotatably connected in the drying box (20). The fourth yarn guide rollers (26) are arranged in two upper and lower rows, and each row of fourth yarn guide rollers (26) is provided with a plurality of fourth yarn guide rollers (26). The fourth yarn guide rollers (26) are used to sequentially wind the blended yarn (90) around the fourth yarn guide rollers (26) in the upper and lower rows.

8. The blended yarn preparation device according to claim 7, characterized in that: The outer walls of the introduction roller (2), the outlet roller (3), the first yarn guide roller (4), the second yarn guide roller (5), the third yarn guide roller (10), and the fourth yarn guide roller (26) are provided with V-shaped grooves (27) on their circumferences, and the V-shaped grooves (27) are used to axially limit the bypassed blended yarn (90).

9. The blended yarn preparation device according to claim 6, characterized in that: The air inlet pipe (21) is arranged at the bottom of the drying box (20), and the air extraction cylinder (22) is fixed on the top of the drying box (20).

10. A process for preparing a blended yarn, using a blended yarn preparation device according to any one of claims 6 to 9, characterized in that: Follow these steps: Step S1, injecting a slurry for sizing the blended yarn (90) into the dipping box (1), winding the blended yarn (90) around the introduction roller (2) and the first guide roller so that the blended yarn (90) is immersed in the slurry of the dipping box (1), the blended yarn (90) soaked in the slurry is sequentially wound around the second guide roller (5), the outlet roller (3), and the third guide roller (10) and passed out of the dipping box (1), and then the blended yarn (90) is passed into the drying box (20) through the inlet hole (201) of the drying box (20), and is wound around the fourth guide roller (26) and then passed out of the outlet hole (202) of the drying box (20); Step S2: When the blended yarn (90) passes through the first yarn guide roller (4) and the second yarn guide roller (5), the blended yarn (90) is attached to the outer surface of the first yarn loosening roller (6), and the driving motor (12) is started to drive the first yarn loosening roller (6) to rotate so that the blended yarn (90) attached to the surface thereof is twisted in the loosening direction, so that the twisted part of the blended yarn (90) is loosely twisted and soaked in the slurry; the blended yarn (90) is pulled away from the first yarn loosening roller (6) and naturally returns to its original twisted state; Step S3, after the blended yarn (90) passes through the lead-out roller (3), the blended yarn (90) enters between the first squeezing roller (7) and the second squeezing roller (8), and the first squeezing roller (7) and the second squeezing roller (8) clamp and squeeze the blended yarn (90) passing through, so as to squeeze out excess slurry in the blended yarn (90); Step S4, the blended yarn (90) passes through the first tightening roller (9) before being wound around the third guide roller (10), and the blended yarn (90) is attached to the outer surface of the first tightening roller (9), and the driving motor (12) synchronously drives the first tightening roller (9) to rotate so that the blended yarn (90) attached to the surface thereof is twisted in the twisting direction, so that the blended yarn (90) is twisted and squeezed out the internal slurry and shaped; Step S5, winding the blended yarn (90) into the drying box (20), blowing hot air into the drying box (20) through the air inlet pipe (21) to dry the blended yarn (90) in the drying box (20); and transporting the hot air drying the residual heat in the drying box (20) to the blowing pipe (25) through the exhaust fan (23) in the exhaust pipe, and blowing it out from the blowing pipe (25) to the blended yarn (90) above the material receiving box (11); Step S6, passing the blended yarn (90) dried in the drying box (20) through the yarn outlet hole (202) to the spinning and winding device for winding.

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