Method and device for producing a soft, fluffy and elastic composite yarn

Abstract

The application provides a production method and equipment of soft and soft-wool elastic composite yarn, which adopts three kinds of yarns including fully-dull POY, PTT and viscose fiber to produce yarns, and the production equipment comprises a non-contact three-channel independent temperature control hot box, realizes high elasticity of the three kinds of fibers, softness and stability of plying, through a double-network device, the three kinds of different fibers are plied and knitted, the network structure is enhanced, and the cohesion of the yarns is enhanced, through a staged setting hot box, the fluffy softness of the plied yarns is enhanced, the high elasticity and setting stability of the yarns are strengthened, and through a hollow non-contact oil nozzle oiling mode, the yarns are uniformly oiled, and the cohesion of the yarns is enhanced, the 40S fully-dull special-shaped light network series of cotton-like yarns produced by optimization of the production process and equipment has the characteristics of comfort, soft-wool and good antibacterial effect.

Description

TECHNICAL FIELD

[0001] The technical field is the process equipment field of elasticizer, in particular to a production method and equipment of soft and fluffy elastic composite yarn. BACKGROUND

[0002] Nowadays, with the growth of downstream clothing, home textile and industrial textile industries, there will be a new demand growth for differentiated and functional polyester fibers, which is conducive to the structural adjustment and variety improvement of polyester filament industry, and will also drive the polyester filament market into a sustained development stage. Under the background of gradual growth of production capacity, it is imperative to take the road of differentiation.

[0003] The fabric woven by ordinary polyester filament has good clothing performance, such as good strength, smoothness, crispness, easy washing and quick drying, but has the disadvantages of hard hand feeling, poor touch, inharmonious luster, poor air permeability and moisture absorption, and in the production process, the single yarn is prone to breakage in the twisting and elasticizing link, fluff is easily generated, and there are problems such as hair, deviation and dead yarn in the product. SUMMARY

[0004] In view of the deficiencies of the prior art, the present application provides a production equipment and process of soft and fluffy elastic composite yarn, which solves the problems of hard hand feeling, poor touch, inharmonious luster, poor air permeability and moisture absorption, and single yarn prone to breakage in the twisting and elasticizing link, fluff easily generated, and hair, deviation and dead yarn in the product in the prior art:

[0005] A production method and device of soft and fluffy elastic composite yarn, characterized in that it comprises the following steps:

[0006] S1: raw silk preparation and heating; the full-dull POY raw silk, PTT raw silk and viscose fiber raw silk are drawn by a roller, and the three kinds of yarns are respectively conveyed into three independent channels of the independent deformation heat box for heating;

[0007] S2: cooling; the yarns after heating in step S1 are cooled by a non-contact cooling plate;

[0008] S3: yarn mixing; the three kinds of raw silk yarns after cooling in step S2 are mixed by a double network device to form yarns;

[0009] S4: yarn heating and setting; the yarns mixed in step S3 are heated and set by a staged setting heat box;

[0010] S5: yarn oiling; the yarns after setting in step S4 are oiled by an oil nozzle;

[0011] S6: winding and packaging; the yarns after winding and forming in step S5 are packaged and stored.

[0012] Optionally, the three-channel independent deformation heating box in step S1 includes a shell with inlet 52 and outlet 53 at both ends. Inside, there are three independent heating channels: a full-dull POY filament heating channel, a PTT filament heating channel, and a viscose fiber filament heating channel. Each of these channels has an inlet 52 and outlet 53 at both ends. A heating device is installed on the top surface of each channel, and a temperature regulating device is installed at the bottom. Each heating device includes a heating wire, and below the heating wire... A heat-conducting plate is provided. The temperature regulating device includes a partition plate, which is horizontally fixed and has a limiting groove in the middle facing the same direction as the heating channel. A lifting wedge block that can move up and down is placed in the limiting groove. A sliding wedge block is fitted on the bottom surface of the lifting wedge block. The mating surface between the lifting wedge block and the sliding wedge block is inclined, and the inclined surface is tilted in the regulating direction. A sliding rod is fixedly installed on the side of the sliding wedge block facing the yarn outlet 53. The three-channel independent deformation heat box is located below the yarn outlet 53 and has a sliding groove. The sliding rod is located in the sliding groove and can move laterally inward. A cooling fan is fixedly installed on the top of the viscose fiber raw yarn heating channel. In use, each yarn bundle enters the heating channel in the heat box. The yarn bundle is guided by the yarn guide. The sliding wedge block is moved by the sliding rod, so that the lifting wedge block can move up and down, causing the yarn bundle in the yarn guide to move closer to or away from the heat-conducting plate, thereby changing the heating temperature.

[0013] Optionally, the top surface of the lifting wedge has an "I"-shaped slot that vertically penetrates the upper surface of the lifting wedge, and a guide wire is fitted inside the slot. The guide wire is installed in the same direction as the heating channel. The guide wire is a U-shaped strip with locking strips formed on both sides of its exterior, and multiple parallel locking slots are formed on the side plates. Guide wire hooks are fitted inside the locking slots. The guide wire hooks are V-shaped and have protrusions formed on both sides. The guide wire hooks are engaged inside the locking slots through the protrusions. Roller guide wire hooks are fitted onto the guide wire inside the heating channel of the fully matte POY filament, and the shaft of the roller guide wire hook is fixedly installed inside the slot. During use, the guide wire guides the filament bundle that needs to be heated. Since the fully matte POY filament is contaminated with matting powder, the roller guide wire hook is used to reduce the friction when in contact with the fully matte POY filament, thereby reducing the fall of matting powder. The guide wire is detachable, allowing for disassembly and cleaning after use.

[0014] Optionally, the heating wire is installed in the same direction as the heating channel, with both ends fixedly mounted on the inner wall. The heat-conducting plate is fixedly mounted on the inner wall, and the heat-conducting plate has multiple rectangular slots arranged horizontally side by side. During use, heat is conducted through the heat-conducting plate to heat the wire bundle. The heat-conducting plate also prevents the wire bundle from directly approaching the heating wire, thus preventing excessively high heating temperatures.

[0015] Optionally, a temperature scale line is arranged on the shell above the chute, a pointer structure is arranged on the top surface of the slide rod, a thread is arranged on the surface close to the chute, a tightening ring is threadedly installed on the thread, and the diameter of the tightening ring is greater than the distance between the chutes. When in use, the temperature to be adjusted can be determined by the pointer structure arranged on the top surface of the slide rod and the temperature scale line 57, the slide rod 58 is fixed by the tightening ring, and the heating temperature is determined.

[0016] Optionally, the non-contact cooling plate in step S2 comprises a shell, a cooling partition plate is fixedly installed in the shell, a cavity is formed between the cooling partition plate and the shell, the cooling partition plate is internally provided with a filament channel, the filament channel penetrates the shell, and a plurality of cooling holes are formed in the surfaces of the two sides of the cooling partition plate. When in use, the cooling layer can be formed between the cooling partition plate and the shell through the cavity, and the filament can be rapidly cooled through the cold coal layer and the cooling holes.

[0017] Optionally, the shell is located at one side of the inlet of the filament channel, and an air inlet is arranged close to the cavity; and the shell is located at one side of the outlet of the filament channel, and an air outlet is arranged close to the cavity. When in use, the cold air enters the cavity through the air inlet and flows out through the air outlet.

[0018] Optionally, the double-network device in step S3 comprises an upper fixed plate and a lower fixed plate which are connected and covered with each other, a filament channel is formed on the covering surface of the upper fixed plate and the lower fixed plate, and the filament channel is sequentially provided with parallelly arranged independent filament channel sections, a mixed filament section and a single-channel filament channel from the inlet end to the outlet end. The independent filament channel sections, the mixed filament section and the single-channel filament channel are mutually connected, and the independent filament channel sections are three parallel sections. When in use, the filament is plied through the double-network device, the filament is held after passing through the independent filament section, the held filament enters the next stage through the single-channel filament channel.

[0019] Optionally, the upper fixed plate is provided with an air outlet at the mixed filament section, and an air path penetrates from the air outlet to the mixed filament section, and the air path is relatively inclined. When in use, the gas enters the inclined air path from the air outlet to blow and hold the filament.

[0020] Compared with the prior art, the application has the following beneficial effects:

[0021] 1. The yarn is produced by compounding three kinds of different characteristic filaments, i.e. fully-dull POY, PTT and viscose fiber, and has the characteristics of soft hand feeling, good affinity, high bulkiness and excellent antibacterial property.

[0022] 2. Due to the different characteristics of the three types of filament bundles—full-dull POY filament, PTT filament, and viscose fiber filament—the required heating temperatures during production are also different. Therefore, a three-channel independent deformation heating box is used to heat the three types of filament bundles at different temperatures during production. This changes the traditional cooling device, and the use of a non-contact cooling plate can accelerate the cooling of the filament bundles during production, resulting in better cooling effect. Since the filament bundles are three different fiber bundles, the possibility of breakage of porous filaments leading to fuzz is reduced through the dual-network device, improving processing performance, resulting in a better product experience and higher practicality.

[0023] 3. The three-channel independent deformation heating box used in the processing of filament bundles can heat different filament bundles separately. By using lifting wedges and sliding wedges to change the heating temperature of the filament bundles inside the three-channel independent deformation heating box, different filament bundles can be heated to the corresponding temperature. The filament bundles are cooled by non-contact cooling plates. By designing cooling baffles inside the non-contact cooling plates, a cooling coal layer is formed between the cooling baffles and the outer shell, which can accelerate the cooling time of the filament bundles. A dual-network device is used to bind and twist the three different filament bundles. The dual-network structure is designed with independent filament channel sections, mixing sections, and single-channel filament channels. An inclined air path is designed at the mixing section to generate cross airflow during the jet mixing process, which mixes the three filament bundles into filaments. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0025] Figure 1 This is a flowchart of a production method and equipment for a soft and elastic composite yarn according to the present invention;

[0026] Figure 2 This is a schematic diagram of the non-contact three-channel independent heating box used in the production method and equipment of soft and elastic composite yarn shown in this invention.

[0027] Figure 3 This is a front view of a non-contact three-channel independent heating box for the production method and equipment of soft and elastic composite yarn shown in this invention.

[0028] Figure 4 This is a schematic diagram of the internal structure of a non-contact three-channel independent heating box for the production method and equipment of soft and elastic composite yarn shown in this invention.

[0029] Figure 5It is the temperature regulating device structure schematic view of the non-contact three-channel independent heating hot box of the production method and equipment of the soft and fluffy comfortable elastic composite yarn shown in the application.

[0030] Figure 6 It is the yarn guide schematic view of the non-contact three-channel independent heating hot box of the production method and equipment of the soft and fluffy comfortable elastic composite yarn shown in the application.

[0031] Figure 7 It is the yarn guide schematic view of the non-contact three-channel independent heating hot box of the production method and equipment of the soft and fluffy comfortable elastic composite yarn shown in the application.

[0032] Figure 8 It is the whole schematic view of the non-contact cooling plate of the production method and equipment of the soft and fluffy comfortable elastic composite yarn shown in the application.

[0033] Figure 9 It is the overhead schematic view of the non-contact cooling plate of the production method and equipment of the soft and fluffy comfortable elastic composite yarn shown in the application.

[0034] Figure 10 It is the internal structure schematic view of the non-contact cooling plate of the production method and equipment of the soft and fluffy comfortable elastic composite yarn shown in the application.

[0035] Figure 11 It is the schematic view of the double network device of the production method and equipment of the soft and fluffy comfortable elastic composite yarn shown in the application.

[0036] Figure 12 It is the internal structure schematic view of the double network device of the production method and equipment of the soft and fluffy comfortable elastic composite yarn shown in the application.

[0037] Figure 13 It is the overhead schematic view of the double network device of the production method and equipment of the soft and fluffy comfortable elastic composite yarn shown in the application.

[0038] Figure 14 It is the schematic view of the section D-D of the double network device of the production method and equipment of the soft and fluffy comfortable elastic composite yarn shown in the application.

[0039] In the diagram: 1. Fully dull POY yarn; 2. PTT yarn; 3. Viscose fiber yarn; 4. Single roller; 5. Three-channel independent deformation heating box; 51. Shell; 52. Yarn inlet; 53. Yarn outlet; 54. Heating channel for fully dull POY yarn; 55. Heating channel for PTT yarn; 56. Heating channel for viscose fiber yarn; 561. Cooling fan; 57. Temperature scale; 58. Slide rod; 59. Tightening ring; 510. Heating wire; 511. Heat conduction plate; 512. Partition; 513. Limiting groove; 514. Lifting wedge; 515. Sliding wedge; 516. Slot; 517. Yarn guide; 518. Locking strip. 519. Snap-fit ​​groove; 520. Guide hook; 521. Roller guide hook; 522. Slide groove; 6. Non-contact cooling plate; 61. Outer shell; 62. Air inlet; 63. Air outlet; 64. Cooling baffle; 65. Cavity; 66. Cooling hole; 67. Fiber bundle channel; 7. False twister; 8. Tensioner; 9. Dual network device; 91. Air jet; 92. Upper fixing plate; 93. Lower fixing plate; 94. Fiber path; 95. Independent fiber path section; 96. Blending section; 97. Single-channel fiber path; 98. Air duct; 10. Two rollers; 11. Two auxiliary rollers; 12. Staged shaping heat box; 13. Three rollers; 14. Oil injector. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0041] Please refer to the details. Figure 1 As shown, a method and apparatus for producing soft and elastic composite yarn includes the following steps:

[0042] S1: Raw yarn preparation and heating; Fully dull POY raw yarn 1, PTT raw yarn 2, and viscose fiber raw yarn 3 are drawn by a roller 4 and fed separately into a three-channel independent deformation heating box 5 for heating. The processing speed is 630m / min.

[0043] S2: Cooling; The filament bundle heated in step S1 is cooled by a non-contact cooling plate 6;

[0044] S3: Yarn is made by mixing the three kinds of original filament yarns; after the three kinds of original filament yarns cooled in step S2 are twisted by the false twister 7, the yarns are mixed by the double network device 9 after being detected by the tension meter 8 to make the yarns;

[0045] S4: Yarn is heated and shaped; after the yarns made by mixing in step S3 are pulled by the two main rollers 10 and the two auxiliary rollers 11, the yarns are heated and shaped by the staged shaping heat box 12, the heating mode of the staged shaping heat box 12 is staged, and the heating is performed from low temperature 80-90° to high temperature 90-105° and then to low temperature 80-90°, so that the ply yarns are fully and completely heated and shaped, the polymerization of the ply yarns is enhanced, and the high elasticity and the shaping stability of the yarns are enhanced.

[0046] S5: Yarn is oiled; after the yarns shaped in step S4 are put into the oil nozzle 14 by the three rollers 13, the yarns are oiled, the rotating speed of the oil wheel is 1.20+0.02 rpm, and the oil content in the oiling process is 2.5+1.0%;

[0047] S6: Yarn is wound and packaged; after the yarns completed in step S5 are shaped by the machine, the yarns are packaged and stored.

[0048] For details, please refer to Figures 1-5As shown, the three-channel independent deformation heat box 5 in step S1 includes a shell 51, the shell 51 is provided with an inlet port 52 and an outlet port 53 at both ends, and three independent heating channels are arranged inside, the three independent heating channels are a full-dull POY raw yarn heating channel 54, a PTT raw yarn heating channel 55 and a viscose fiber raw yarn heating channel 56, the full-dull POY raw yarn heating channel 54, the PTT raw yarn heating channel 55 and the viscose fiber raw yarn heating channel 56 are provided with the inlet port 52 and the outlet port 53 at both ends, heating devices are mounted on the top surfaces inside, temperature adjusting devices are mounted on the bottoms, the heating devices include electric heating wires 510, heat-conducting plates 511 are arranged below the electric heating wires 510, the temperature adjusting devices include partition plates 512, the partition plates 512 are fixedly installed in the transverse direction and are provided with limiting grooves 513 in the same direction as the heating channels in the middle parts, lifting wedge blocks 514 that can move up and down are placed in the limiting grooves 513, sliding wedge blocks 515 are matched with the bottom surfaces of the lifting wedge blocks 514, the matching surfaces of the lifting wedge blocks 514 and the sliding wedge blocks 515 are inclined surfaces, the inclined surfaces are inclined to the adjusting direction, slide rods 58 are fixedly installed on one surface of the sliding wedge blocks 515 that faces the outlet port 53, the three-channel independent deformation heat box 5 is provided with a sliding groove 522 below the outlet port 53, the slide rods 58 are located in the sliding groove 522 and can move inwards in the transverse direction, heat-dissipating fans 561 are fixedly installed on the top of the viscose fiber raw yarn heating channel 56, temperature scale lines 57 are arranged on the shell 51 above the sliding groove 522, a pointer-like structure is arranged on the top surface of the slide rod 58, a thread is arranged on a surface of the slide rod 58 that is close to the sliding groove 522, a tightening ring 59 is threadedly installed at the thread position, the diameter of the tightening ring 59 is greater than the distance between the sliding groove 522, when in use, the slide rod 58 is operated to slide in cooperation with the temperature scale lines 57, the sliding wedge blocks 515 that are fixedly connected with the slide rod 58 are driven to move, because the upper inclined surface of the sliding wedge blocks 515 cooperates with the lower inclined surface of the lifting wedge blocks 514 and the lifting wedge blocks 514 are placed in the limiting grooves 513, the sliding sliding wedge blocks 515 make the lifting wedge blocks 514 move upwards or downwards along the inclined surface, thereby driving the yarn guides 517 that are clamped on the top surfaces of the lifting wedge blocks 514 to move close to or away from the heat-conducting plates 511 that are fixedly arranged above the inside of the heat box, the heating temperature of the yarn bundles on the yarn hooks 520 is increased or decreased, after the temperature is determined, the slide rod 58 is fixed by the tightening ring 59, because the required temperature of the viscose fiber raw yarn 3 is the lowest, the heat-dissipating fans 561 are additionally installed in the viscose fiber raw yarn heating channel 56, air circulation is realized through the inside and outside, the heating of the viscose fiber raw yarn 3 is accelerated to reach the required temperature, and the yarn bundles are prevented from being too far away from the heat-conducting plates 511 and from being insufficiently heated.

[0049] For details, please refer to Figures 6-7As shown, the top surface of the lifting wedge 514 has an "I"-shaped slot 516, which vertically penetrates the upper surface of the lifting wedge 514. A wire guide 517 is fitted inside the slot 516. The wire guide 517 is installed in the same direction as the heating channel. The wire guide 517 is a U-shaped strip. The outer two sides of the wire guide 517 have forming retaining strips 518, and multiple parallel retaining grooves 519 are formed on the side plates. A wire guide hook 520 is fitted inside the retaining groove 519. The wire guide hook 520 is V-shaped and has protrusions on both sides. The wire guide hook 520 is engaged inside the slot 516 by the protrusions. A roller wire guide hook 521 is fitted onto the wire guide 517 inside the fully dull POY raw yarn heating channel 54, and the shaft of the roller wire guide hook 521 is fixed. Installed inside the slot 516, the yarn bundle is guided through the three-channel independent deformation heating box 5 by the guide hook 520 during use. Since the fully dull POY raw yarn 1 is contaminated with matting powder, the roller guide hook 521 is engaged on the guide 517 inside the fully dull POY raw yarn heating channel 54 to reduce the friction when the fully dull POY raw yarn 1 contacts the roller guide hook 521, thereby reducing the loss of matting powder. Since the guide 517 is engaged in the slot 516 of the lifting wedge block 514 by the locking strip 518, it is convenient to disassemble the guide 517 for maintenance and cleaning.

[0050] Please refer to the details. Figures 8-10 As shown, the non-contact cooling plate 6 described in step S2 includes a housing 61. A cooling baffle 64 is fixedly installed inside the housing 61. A cavity 65 is formed between the cooling baffle 64 and the housing 61. The cooling baffle 64 has a wire bundle channel 67 inside, which penetrates the housing 61. Multiple cooling holes 66 are formed on both sides of the cooling baffle 64. The housing 61 is located on the inlet side of the wire bundle channel 67, and has an air inlet 62 near the cavity 65. An air outlet 63 is provided on the outlet side of the wire bundle channel 67 near the cavity 65. When in use, the heated wire bundle enters the wire bundle channel 67. Since the cavity 65 is formed between the cooling baffle 64 and the outer shell 61, the cold air entering from the air inlet 62 accumulates in the cavity 65 to form a cold coal layer. Since multiple cooling holes 66 are provided on both sides of the cooling baffle 64, the cold air accumulated in the cavity 65 can enter the wire bundle channel 67 through the cold air holes to cool the wire bundle, which can accelerate the cooling time and improve the cooling effect.

[0051] Please refer to the details. Figures 11-14As shown, the double-network device 9 in step S3 comprises an upper fixed plate 92 and a lower fixed plate 93 which are hingedly connected and cover each other, and a wire channel 94 is formed on the covering surface of the upper fixed plate 92 and the lower fixed plate 93, the wire channel 94 is sequentially provided with parallel arranged independent wire channel segments 95, mixed wire segments 96 and single-channel wire channels 97 from the wire inlet end to the wire outlet end, the independent wire channel segments 95, the mixed wire segments 96 and the single-channel wire channels 97 are interconnected, the independent wire channel segments 95 are three parallel ones, the upper fixed plate 92 is provided with a gas jet port 91 at the mixed wire segment 96, and a wind path 98 penetrates from the gas jet port 91 to the mixed wire segment 96, and the wind path 98 is relatively inclined. In use, the double-network device 9 is used to ply the yarn, the yarn enters the independent wire segment from the wire inlet end, and the yarn is held by the gas in the mixed wire segment 96 through the wind path 98, because the wind path 98 is inclined, the rotating air flow generated by the gas intersection can complete the holding of the yarn, and the held yarn enters the next stage through the single-channel wire channel 97.

[0052] Working principle: In the implementation process, the fully-extinguished POY raw yarn 1, PTT raw yarn 2 and viscose raw yarn 3 are drawn by a roller 4, and the three kinds of yarns are respectively conveyed into three independent deformation heat boxes 5 in three channels for heating, the heated yarns are cooled by a non-contact cooling plate 6, the cooled three kinds of raw yarns are mixed into yarns by a double-network device 9, the mixed yarns are heated and shaped by a staged shaping heat box 12, the shaped yarns are oiled by an oil nozzle 14, and the oiled yarns are wound by the machine to form the yarns which are packaged and stored.

[0053] The roller, the false twister, the tension meter, the two rollers, the second roller, the staged shaping heat box, the three rollers and the oil nozzle in the above technical solution are all existing production devices in the yarn production process, and thus are not described in detail.

[0054] The above only describes the preferred embodiments of the present application and is not used to limit the present application. The present application can have various modifications and changes for those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A production apparatus for soft, velvety, and elastic composite yarn, characterized in that, Includes the following steps: S1: Raw yarn preparation and heating; Fully dull POY raw yarn (1), PTT raw yarn (2), and viscose fiber raw yarn (3) are drawn by a roller (4) and transported separately into a three-channel independent deformation heat box (5) for heating; S2: Cooling; The filament bundle heated in step S1 is cooled by a non-contact cooling plate (6); S3: The three types of raw silk bundles, cooled in step S2, are mixed through a double-network device (9) to form yarn. S4: Yarn heating and setting; the yarn mixed in step S3 is heated and set in a staged setting heat box (12); S5: Yarn oiling; the yarn after step S4 is oiled through the oil spray nozzle (14); S6: Winding and Packaging; After the yarn is wound into shape in step S5, it is packaged and stored. The three-channel independent deformation heating box (5) in step S1 includes a shell (51), with an inlet (52) and an outlet (53) at both ends of the shell (51). It has three independent heating channels inside, namely a full-dull POY raw yarn heating channel (54), a PTT raw yarn heating channel (55), and a viscose fiber raw yarn heating channel (56). The top surface of the full-dull POY raw yarn heating channel (54), the PTT raw yarn heating channel (55), and the viscose fiber raw yarn heating channel (56) is equipped with a heating device, and the bottom of each of them is equipped with a temperature regulating device. The heating device includes an electric heating wire (510), and a heat-conducting plate (511) is provided below the electric heating wire (510). The temperature regulating device includes a partition (512). The partition (512) is horizontally fixed and has a limiting groove (513) in the middle that is in the same direction as the heating channel. A lifting wedge (514) that can move up and down is placed in the limiting groove (513). A sliding wedge (515) is fitted on the bottom surface of the lifting wedge (514). The mating surface of the lifting wedge (514) and the sliding wedge (515) is an inclined surface. The inclined surface is inclined in the adjustment direction. A slide rod (58) is fixedly installed on the side of the sliding wedge (515) facing the yarn outlet (53). The three-channel independent deformation heat box (5) is provided with a slide groove (522) below the yarn outlet (53). The slide rod (58) is located in the slide groove (522) and can move inward laterally. A cooling fan (561) is fixedly installed on the top of the viscose fiber raw yarn heating channel (56). The top surface of the lifting wedge (514) is provided with an "I"-shaped slot (516), which vertically penetrates the upper surface of the lifting wedge (514). A wire guide (517) is installed in the slot (516). The wire guide (517) is installed in the same direction as the heating channel. The wire guide (517) is a U-shaped strip. The wire guide (517) has retaining strips (518) formed on both sides of its exterior. Multiple strips are arranged in parallel on the side plates. The snap-fit ​​groove (519) is used to snap-fit ​​the wire guide hook (520) inside the snap-fit ​​groove (519). The wire guide hook (520) is V-shaped and has protrusions formed on both sides. The wire guide hook (520) is snapped into the slot (516) through the protrusions. The roller wire guide hook (521) is snapped into the wire guide (517) inside the full dull POY raw yarn heating channel (54). The shaft of the roller wire guide hook (521) is fixedly installed inside the slot (516).

2. The production apparatus for soft and elastic composite yarn according to claim 1, characterized in that: The heating wire (510) is installed in the same direction as the heating channel, and its two ends are fixedly installed on the inner wall. The heat-conducting plate (511) is fixedly installed on the inner wall. The heat-conducting plate (511) has multiple rectangular long grooves, which are arranged horizontally side by side.

3. The production apparatus for soft and elastic composite yarn according to claim 1, characterized in that: Temperature scale lines (57) are provided on the housing (51) above the slide groove (522). A pointer-shaped structure is provided on the top surface of the slide rod (58). A thread is provided on a section of its surface near the slide groove (522). A tightening ring (59) is threaded at the thread position. The diameter of the tightening ring (59) is larger than the distance between the slide grooves (522).

4. The production apparatus for soft and elastic composite yarn according to claim 1, characterized in that: The non-contact cooling plate (6) mentioned in step S2 includes a shell (61), a cooling baffle (64) is fixedly installed inside the shell (61), a cavity (65) is formed between the cooling baffle (64) and the shell (61), the cooling baffle (64) has a filament channel (67) inside, the filament channel (67) penetrates the shell (61), and multiple cooling holes (66) are opened on both sides of the cooling baffle (64).

5. The production apparatus for soft and elastic composite yarn according to claim 4, characterized in that: The outer shell (61) is located on the inlet side of the filament channel (67) and has an air inlet (62) near the cavity (65). The outer shell (61) is located on the outlet side of the filament channel (67) and has an air outlet (63) near the cavity (65).

6. The production apparatus for soft and elastic composite yarn according to claim 1, characterized in that: The dual network device (9) described in step S3 includes an upper fixed plate (92) and a lower fixed plate (93) that are hinged together and cover each other. The upper fixed plate (92) and the lower fixed plate (93) have a filament channel (94) formed on their covering surfaces. The filament channel (94) has three parallel filament channel sections (95), a filament mixing section (96), and a single-channel filament channel (97) arranged sequentially from the filament inlet end to the filament outlet end. The independent filament channel sections (95), the filament mixing section (96), and the single-channel filament channel (97) are interconnected. The independent filament channel sections (95) are three parallel filament channels.

7. The production apparatus for soft and elastic composite yarn according to claim 6, characterized in that: The upper fixing plate (92) is provided with a jet nozzle (91) at the mixing section (96), and an air passage (98) runs through the jet nozzle (91) to the mixing section (96), and the air passage (98) is relatively inclined.

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