Processing method of polyester mother yarn

Abstract

The invention provides a polyester mother yarn processing method, which solves the problems of poor silk fiber forming quality and the like, and comprises the following steps: melting and extruding PET (Polyethylene Terephthalate) particles to obtain a spinning solution, carrying out melt spinning on the spinning solution through a spinneret plate, cooling through a circular blowing cooling device, and carrying out drafting and heat setting to obtain the polyester mother yarn through a yarn forming assembly. The device has the advantages of high filamentation quality, stable operation and the like.

Description

Technical Field

[0001] The invention belongs to the technical field of polyester processing, and in particular relates to a method for processing polyester mother yarn. Background Art

[0002] In recent years, the application field of polyester mother yarn is quite extensive. Conventional polyester mother yarn has the characteristics of high elasticity, high strength, wear resistance and non-pilling. It is mainly used in shoe materials, webbing, window screens, sandwich fabrics, mesh fabrics, bags, stage costumes, wedding decorations and other fields. Polyester mother yarn usually uses high-viscosity polyester chips as the main raw material, and the finished mother yarn is obtained through spinning, cooling, oiling, stretching and winding. However, in the actual production and processing process, the existing processing system cannot guarantee the guiding stability of the fiber yarn during the cooling process of the wire drawing. The fiber yarn is easily disturbed by turbulence, affecting the subsequent stretching and winding processing. In addition, the existing mother yarn processing cooling system has a relatively simple structure, and the blowing cooling direction cannot be adaptively adjusted when the wire drawing position and wire drawing amount are adjusted.

[0003] In order to solve the deficiencies in the prior art, people have conducted long-term explorations and proposed various solutions. For example, Chinese patent literature discloses a spinning device and a spinning method with a vortex jet cooling device [02825139.3], which contains a spinning solution of water, cellulose and tertiary amine oxide, and a device for manufacturing a continuous forming body, which has a nozzle plate with an extrusion hole, and the forming material is extruded through the extrusion hole into a continuous forming body that is basically in the shape of a filament. The continuous forming body is guided through an air gap and is guided to a bundling device through a steering mechanism in a coagulation bath, where they are combined into a fiber bundle. A jet device is provided in the air gap, which sprays a cooling airflow toward the continuous forming body in a direction perpendicular to the flow direction.

[0004] The above solution solves the problem of spinning cooling to a certain extent, but the solution still has many shortcomings, such as the inability to guarantee the quality of fiber filament molding. Summary of the invention

[0005] The purpose of the present invention is to provide a method for processing polyester mother yarn with reasonable design and good mother yarn forming quality in view of the above problems.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for processing polyester mother yarn, the specific steps of which are:

[0008] The PET particles are melt-extruded to obtain a spinning solution, which is then melt-spun by a spinneret, cooled by a ring-blowing cooling device, and then drawn, heat-set, and formed into a filament assembly to obtain a polyester mother yarn.

[0009] In the above-mentioned method for processing polyester mother yarn, the spinning temperature is 260-292°C, the drawing temperature is 90-105°C, the drawing multiple is 1.6-2.3 times, and the heat setting temperature is 140-145°C.

[0010] In the above-mentioned polyester mother yarn processing method, the spinneret is assembled and connected with the ring-blowing cooling device, the ring-blowing cooling device is opposite to the filament forming assembly, and an air suction assembly is arranged between the filament forming assembly and the ring-blowing cooling device.

[0011] In the above-mentioned method for processing polyester mother yarn, the spinneret is disc-shaped, arranged horizontally and provided with a plurality of concentric ring-shaped injection parts at the lower end, injection units are evenly distributed on the injection parts and arranged symmetrically in the center, and a diversion assembly connected to each injection unit is provided at the upper end of the spinneret.

[0012] In the above-mentioned method for processing polyester mother yarn, the diverter component includes a diverter cover covering the upper end of the spinneret, and a diverter plate extending radially outward from the center is arranged on the side of the diverter cover opposite to the spinneret, and a diverter channel opposite to the injection unit is left between adjacent diverter plates; the injection unit includes a countersunk hole arranged at the upper end of the spinneret, and injection blocks are respectively pressed and fixed in the countersunk holes, and injection channels with conical cross-sections are evenly distributed in the injection blocks; a switching groove corresponding to the injection part and in an annular shape is opened at the upper end of the spinneret, and an annular switching ring is rotatably installed in the switching groove, and an opening and closing port corresponding to the injection unit is opened on the switching ring, and stepping racks extending along the circumferential direction are respectively arranged inside and outside the switching ring, and a stepping gear meshing with the stepping rack is rotatably installed between adjacent switching circles, and the stepping gear is meshing with the stepping motor through a speed change gear set.

[0013] In the above-mentioned processing method of polyester mother yarn, the annular blowing cooling device includes a blow tube vertically installed at the lower end of the spinneret, and the inner side of the blow tube is provided with strip blowing outlets arranged along the circumferential direction and annular blowing outlets arranged along the vertical direction. The strip blowing outlets and the annular blowing outlets are respectively equipped with direction adjustment components for adjusting the blowing angle.

[0014] In the above-mentioned processing method of polyester mother yarn, a connecting seat that fits with the spinneret is provided at the upper end of the hair dryer, and the connecting seat is fixedly connected to the spinneret through a threaded part. An annular air inlet ring is provided at the top of the hair dryer, and the air inlet ring is connected to an air inlet pipe, and an air inlet cavity that is interconnected is left between the air inlet ring and the hair dryer.

[0015] In the above-mentioned processing method of polyester mother yarn, the direction adjustment component includes a direction adjustment rod vertically installed in the hair dryer and adjacent to the strip-shaped blowing port, the direction adjustment rod is rotatably connected to the hair dryer and a direction adjustment gear is installed on the upper end, the direction adjustment gear is meshed and transmitted with a direction adjustment gear ring, and the direction adjustment gear ring is meshed and transmitted with a direction adjustment motor through a speed change gear set; the direction adjustment rod is connected with a direction adjustment plate which can be opened and closed relative to the strip-shaped blowing port, the direction adjustment rod and its direction adjustment plate are arranged in pairs on both sides of the strip-shaped blowing port, the opening and closing direction of the direction adjustment plate connected to one of the direction adjustment rods is outward relative to the strip-shaped blowing port, and the opening and closing direction of the direction adjustment plate connected to the other direction adjustment rod is inward relative to the strip-shaped blowing inner port.

[0016] In the above-mentioned processing method of polyester mother yarn, the direction adjustment component includes a direction adjustment frame installed in the hair dryer for upward and downward sliding, the direction adjustment frame has a direction adjustment ring which is in a circular shape and corresponds one to one with the annular blowing port, the direction adjustment ring is connected by a vertically arranged direction adjustment strip, the direction adjustment strip is circumferentially limited to the hair dryer and slides axially, and a lifting screw is installed between the lower end of the direction adjustment strip and the hair dryer; the direction adjustment ring is movably connected with a direction adjustment piece, the direction adjustment piece is plugged into and movably connected with the direction adjustment frame at the upper end of the annular blowing port, the direction adjustment pieces are arranged symmetrically with respect to the center, and a closing plate which closes the gap between adjacent direction adjustment pieces is movably installed, and the opening and closing direction of the direction adjustment piece is outward relative to the annular blowing port.

[0017] In the above-mentioned method for processing polyester mother yarn, the filament forming component includes a plurality of transmission guide rollers, transmission fibers are transmission-connected between the transmission guide rollers, and the suction component is installed above the transmission fibers; the suction component includes suction pipes arranged on both sides above the transmission fibers, the suction pipes have suction ports extending radially, and both ends of the suction pipes are rotatably connected to the suction brackets.

[0018] Compared with the existing technology, the advantages of the present invention are: the ring-blowing air cooling device and the suction assembly cooperate to guide the direction of the cooling air, effectively eliminating the turbulence between the spinneret and the spinning assembly, and improving the molding quality of the polyester mother yarn; the ring-blowing air cooling device can flexibly adjust the circumferential and axial air outlet directions, and can be synchronously adjusted with the injection unit on the spinneret, which is suitable for different yarn output amounts; the spinneret and the ring-blowing air cooling device are assembled in a modular manner, and the number of combinations with the spinning assembly can be adjusted according to actual needs to ensure the production and processing efficiency of the mother yarn. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is an assembly schematic diagram of the present invention;

[0020] Figure 2 It is an assembly schematic diagram of another viewing angle of the present invention;

[0021] Figure 3 is a structural cross-sectional view of a spinneret of the present invention;

[0022] Figure 4 is a partial cross-sectional view of a spinneret of the present invention;

[0023] Figure 5 is a structural cross-sectional view of the ring-blowing cooling device of the present invention;

[0024] Figure 6 is a partial cross-sectional view of the ring-blowing cooling device of the present invention;

[0025] Figure 7 is another partial cross-sectional view of the ring-blowing cooling device of the present invention;

[0026] Figure 8 It is a schematic structural diagram of a filament forming assembly and an air suction assembly of the present invention;

[0027] In the figure, the spinneret 1, the jet part 11, the switching groove 12, the switching circle 13, the opening and closing port 14, the stepping rack 15, the stepping gear 16, the stepping motor 17, the annular blowing cooling device 2, the blowing cylinder 21, the strip blowing port 22, the annular blowing port 23, the adapter 24, the air inlet circle 25, the air inlet pipe 26, the air inlet cavity 27, the filament forming component 3, the transmission guide roller 31, the transmission fiber 32, the suction component 4, the suction pipe 41, the suction Mouth 42, suction bracket 43, injection unit 5, diverter assembly 6, diverter cover 61, diverter plate 62, diverter channel 63, countersunk hole 64, injection block 65, injection channel 66, adjustment assembly 7, adjustment rod 71, adjustment gear 72, adjustment gear ring 73, adjustment motor 74, adjustment plate 75, adjustment frame 8, adjustment ring 81, adjustment bar 82, lifting screw 83, adjustment sheet 84, adjustment frame 85, closing plate 86. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] A method for processing polyester mother yarn comprises the following steps:

[0030] S1: Melting and extruding PET particles to obtain a spinning solution;

[0031] S2: The spinning solution is melt-spun through spinneret 1;

[0032] S3: Cooling by means of a ring-blowing cooling device 2;

[0033] S4: After drawing, heat setting and filament forming component 3, polyester mother yarn is obtained.

[0034] Among them, the spinning temperature is 260-292°C, the drawing temperature is 90-105°C, the drawing multiple is 1.6-2.3 times, and the heat setting temperature is 140-145°C.

[0035] Embodiment 1

[0036] like Figure 1-8As shown, the spinneret 1 is connected to the external liquid supply system, and filaments are produced under the action of high-pressure driving force. The spinneret 1 is equipped with a ring-blowing cooling device 2 to limit the direction of filament production. The ring-blowing cooling device 2 and the filament forming component 3 are relatively convenient for subsequent oiling treatment. A suction component 4 is provided between the filament forming component 3 and the ring-blowing cooling device 2 to discharge excess cooling air to prevent the cooling air from impacting the filament forming component 3 and affecting the formation of polyester fibers.

[0037] Specifically, the spinneret 1 is usually made of stainless steel and is in the shape of a disk. The spinneret 1 is arranged horizontally and has a plurality of concentric ring-shaped injection parts 11 at the lower end. The injection parts 11 are evenly distributed with injection units 5 arranged in a central symmetrical manner. The upper end of the spinneret 1 is provided with a flow splitter assembly 6 connected to each injection unit 5. The flow splitter assembly 6 guides the raw material to be evenly transmitted to each injection unit 5, wherein the position and number of the injection units 5 can be adjusted according to actual needs.

[0038] In detail, unlike the conventional flow guide structure, the flow diversion assembly 6 in this embodiment includes a flow diversion cover 61 covering the upper end of the spinneret 1, and the flow diversion cover 61 is detachable. The side of the flow diversion cover 61 opposite to the spinneret 1 is provided with a flow diversion plate 62 extending radially outward from the center, and a flow diversion channel 63 opposite to the injection unit 5 is left between adjacent flow diversion plates 62. The spinning solution is input from the flow diversion cover 61 and the center of the spinneret 1 and transmitted radially, and the flow diversion channel 63 realizes uniform distribution of the spinning solution.

[0039] In order to facilitate modular assembly of the injection unit 5, the injection unit 5 includes a countersunk hole 64 arranged at the upper end of the spinneret 1, and injection blocks 65 are respectively pressed and fixed in the countersunk hole 64. The injection channels 66 with conical cross-sections are evenly distributed in the injection block 65, and the spinning solution is extruded and injected.

[0040] In addition, a switching groove 12 in an annular shape corresponding to the injection part 11 is provided at the upper end of the spinneret 1, and an annular switching ring 13 is rotatably installed in the switching groove 12. An opening and closing port 14 corresponding to the injection unit 5 is provided on the switching ring 13. Only when the switching ring 13 rotates and makes the injection unit 5 face the opening and closing port 14, the injection unit 5 can normally spray downward, otherwise it is in a closed state. Stepping racks 15 extending in the circumferential direction are respectively provided inside and outside the switching ring 13, and stepping gears 16 meshing with the stepping racks 15 are rotatably installed between adjacent switching rings 13. The stepping gears 16 mesh with the stepping motor 17 through the speed gear set. The stepping racks 15 of each switching ring 13 are independently driven by the stepping motor 17 through the stepping gear 16 and the speed gear set, thereby flexibly controlling whether the injection unit 5 produces silk.

[0041] Furthermore, the existing blowing system adopts unidirectional blowing, and its structure is relatively simple, but the guiding effect of the silk fibers is poor during use, and the cooling uniformity cannot be guaranteed. The annular blowing cooling device 2 in this embodiment includes a blow tube 21 vertically installed at the lower end of the spinneret 1 to blow air uniformly in the circumferential direction of the silk fibers, and the inner side of the blow tube 21 is provided with strip blowing ports 22 arranged along the circumferential direction and annular blowing ports 23 arranged along the vertical direction, and the strip blowing ports 22 and the annular blowing ports 23 are respectively equipped with a direction adjustment component 7 for adjusting the blowing angle. The direction adjustment component 7 can fine-tune the air outlet direction, so as to form a spiral downward cooling wind inside the blow tube 21.

[0042] Furthermore, an air inlet channel is reserved inside the blower 21, wherein an adapter seat 24 is provided at the upper end of the blower 21 to fit the spinneret 1, and the adapter seat 24 is fixedly connected to the spinneret 1 through a screw member, and an annular air inlet ring 25 is provided at the top of the blower 21, and the air inlet ring 25 is connected to an air inlet pipe 26, and an air inlet cavity 27 is reserved between the air inlet ring 25 and the blower 21. The air inlet cavity 27 inside the air inlet ring 25 evenly distributes the cooling air.

[0043] Embodiment 2

[0044] like Figure 7 As shown, the structure, principle and specific implementation steps of this embodiment are similar to those of the first embodiment, except that, in order to adjust the blowing direction of the strip blowing port 22 and ensure that cooling air of different air volumes can flow in a spiral shape in the blowing tube 21, the direction adjustment component 7 includes a direction adjustment rod 71 vertically installed in the blowing tube 21 and adjacent to the strip blowing port 22, the direction adjustment rod 71 is rotatably connected to the blowing tube 21 and a direction adjustment gear 72 is installed on the upper end, the direction adjustment gear 72 is meshed with a direction adjustment ring gear 73, and the direction adjustment ring gear 73 is meshed with a direction adjustment motor 74 through a speed change gear set. The direction adjustment motor 74 is feedback-adjusted with the sensor element to drive multiple direction adjustment rods 71 ​​to rotate synchronously.

[0045] The direction-adjusting rod 71 is connected with a direction-adjusting plate 75 that can be opened and closed relative to the strip-shaped air outlet 22. As the direction-adjusting rod 71 rotates, the direction-adjusting plate 75 also swings and opens and closes relative to the strip-shaped air outlet 22. The direction-adjusting rod 71 and its direction-adjusting plate 75 are arranged in pairs on both sides of the strip-shaped air outlet 22, wherein the direction-adjusting plate 75 connected to one direction-adjusting rod 71 opens and closes outward relative to the strip-shaped air outlet 22, and the direction-adjusting plate 75 connected to another direction-adjusting rod 71 opens and closes inward relative to the strip-shaped air outlet. Two adjacent direction-adjusting plates 75 always remain parallel. As the rotation angle of the direction-adjusting rod 71 changes, the opening and closing angle of the direction-adjusting plate 75 relative to the strip-shaped air outlet 22 also changes accordingly, and the spacing between adjacent direction-adjusting plates 75 also increases or decreases accordingly, and the size of the spacing is proportional to the opening and closing angle of the direction-adjusting plate 75 and inversely proportional to the air intake volume inside the hair dryer 21, thereby maintaining the movement stability of the internal silk fibers.

[0046] Embodiment 3

[0047] like Figure 6 As shown, the structure, principle and specific implementation steps of this embodiment are similar to those of the first embodiment, the difference being that the direction adjustment component 7 in this embodiment is opposite to the annular blowing port 23, and specifically includes a direction adjustment frame 8 that is slidably mounted inside the hair dryer 21 up and down, and the direction adjustment frame 8 has a direction adjustment ring 81 that is annular and corresponds to the annular blowing port 23 one by one, and the direction adjustment ring 81 is connected through a vertically arranged direction adjustment bar 82, and the direction adjustment bar 82 is circumferentially limited and axially slidable with the hair dryer 21, and a lifting screw 83 is installed between the lower end of the direction adjustment bar 82 and the hair dryer 21. As the lifting screw 83 is started, the direction adjustment frame 8 slides up and down inside the hair dryer 21, and the linked structure controls the air outlet direction of the annular blowing port 23, mainly guiding the cooling air to tilt downward and concentrate in the middle of the direction adjustment ring 81.

[0048] Furthermore, the direction-adjusting ring 81 is movably connected with a direction-adjusting piece 84, which is plugged and movably connected with a direction-adjusting frame 85 at the upper end of the annular air outlet 23, and the direction-adjusting pieces 84 are centrally symmetrically arranged, and a closing plate 86 is movably installed between adjacent direction-adjusting pieces 84 to close the gap between them, and the opening and closing direction of the direction-adjusting piece 84 is outward relative to the annular air outlet 23. When the direction-adjusting frame 8 rises, the direction-adjusting piece 84 tilts downward and reduces the air volume, thereby reducing the central air volume of the hair dryer 21, and vice versa, it increases the central air volume of the hair dryer 21.

[0049] Embodiment 4

[0050] like Figure 8 As shown, the structure, principle and specific implementation steps of this embodiment are similar to those of the first embodiment, the difference being that the filament forming assembly 3 in this embodiment is similar to the existing fiber transmission structure, and includes a plurality of transmission guide rollers 31, and transmission fibers 32 are transmission-connected between the transmission guide rollers 31, and a suction assembly 4 is installed above the transmission fibers 32, and the suction assembly 4 is located between the transmission fibers 32 and the annular air cooling device 2. When the annular air cooling device 2 blows air downward, the impact airflow on the upper surface of the transmission fibers 32 is reduced to prevent the silk fibers from floating.

[0051] Obviously, the suction assembly 4 has a symmetrical structure as a whole, and specifically includes suction pipes 41 arranged on both sides above the transmission fiber 32, the suction pipes 41 have suction ports 42 extending radially, and both ends of the suction pipes 41 are rotatably connected to suction brackets 43. The orientation angle of the suction ports 42 is adjustable, so as to adapt to the spinneret 1 and the annular air cooling device 2 at different installation heights.

[0052] To sum up, the principle of this embodiment is that multiple injection units 5 inside the spinneret 1 adjust the silk outlet position under the control of the diverter component 6, the annular air cooling device 2 blows air to cool the silk fibers, the direction adjustment component 7 and the sensor element perform feedback adjustment to guide the cooling air and silk fibers to move in a spiral shape, the silk forming component 3 conducts the silk fibers and the suction component 4 absorbs excess cooling air to prevent the fibers from floating.

[0053] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0054] Although this article makes more use of the spinneret 1, the jet part 11, the switching slot 12, the switching ring 13, the opening and closing port 14, the stepping rack 15, the stepping gear 16, the stepping motor 17, the annular blowing cooling device 2, the blowing tube 21, the strip blowing port 22, the annular blowing port 23, the adapter 24, the air inlet ring 25, the air inlet pipe 26, the air inlet cavity 27, the filament forming component 3, the transmission guide roller 31, the transmission fiber 32, the suction component 4, the suction pipe 41, the suction port 42, the suction The terms such as bracket 43, injection unit 5, flow dividing assembly 6, flow dividing cover 61, flow dividing plate 62, flow dividing channel 63, countersunk hole 64, injection block 65, injection channel 66, direction adjustment assembly 7, direction adjustment rod 71, direction adjustment gear 72, direction adjustment gear ring 73, direction adjustment motor 74, direction adjustment plate 75, direction adjustment frame 8, direction adjustment ring 81, direction adjustment bar 82, lifting screw 83, direction adjustment sheet 84, direction adjustment frame 85, closing plate 86, etc., but the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A method for processing polyester mother yarn, characterized in that: The steps include: S1: Melting and extruding PET particles to obtain a spinning solution; S2: The spinning solution is melt-spun through the spinneret (1); S3: Cooling by means of a ring-blowing cooling device (2); S4: After drawing, heat setting and filament forming assembly (3), polyester mother yarn is obtained.

2. The method for processing polyester mother yarn according to claim 1, characterized in that: The spinning temperature is 260-292°C, the drawing temperature is 90-105°C, the drawing multiple is 1.6-2.3 times, and the heat setting temperature is 140-145°C.

3. The method for processing polyester mother yarn according to claim 1, characterized in that: The spinneret (1) is assembled and connected with the annular air cooling device (2), the annular air cooling device (2) is opposite to the filament forming assembly (3), and an air suction assembly (4) is arranged between the filament forming assembly (3) and the annular air cooling device (2).

4. A method for processing polyester mother yarn according to claim 3, characterized in that: The spinneret (1) is in the shape of a disk. The spinneret (1) is arranged horizontally and has a plurality of concentric ring-shaped injection parts (11) at the lower end. The injection parts (11) are evenly distributed with injection units (5) arranged in a central symmetrical manner. The upper end of the spinneret (1) is provided with a flow distribution component (6) connected to each injection unit (5).

5. The method for processing polyester mother yarn according to claim 4, characterized in that: The flow splitter assembly (6) comprises a flow splitter cover (61) covering the upper end of the spinneret (1), and a flow splitter plate (62) extending radially outward from the center is arranged on the side of the flow splitter cover (61) opposite to the spinneret (1), and a flow splitter channel (63) opposite to the injection unit (5) is left between adjacent flow splitter plates (62); the injection unit (5) comprises a countersunk hole (64) arranged at the upper end of the spinneret (1), and injection blocks (65) are respectively pressed and fixed in the countersunk holes (64), and injection channels (66) with conical cross-sections are evenly distributed in the injection blocks (65); the The spinneret (1) has an annular switching groove (12) at the upper end thereof which corresponds to the injection part (11) in a one-to-one manner. An annular switching ring (13) is rotatably mounted in the switching groove (12). An opening and closing opening (14) corresponding to the injection unit (5) is formed on the switching ring (13). Stepping racks (15) extending along the circumferential direction are respectively arranged inside and outside the switching ring (13). Stepping gears (16) meshing with the stepping racks (15) are rotatably mounted between adjacent switching rings (13). The stepping gears (16) mesh with the stepping racks (15) for transmission through a speed change gear set and are transmitted through a stepping motor (17).

6. The method for processing polyester mother yarn according to claim 3, characterized in that: The annular air blowing cooling device (2) comprises a blow tube (21) vertically mounted at the lower end of the spinneret (1), the inner side of the blow tube (21) is provided with strip blow outlets (22) arranged along the circumferential direction and annular blow outlets (23) arranged along the vertical direction, and the strip blow outlets (22) and the annular blow outlets (23) are respectively equipped with a direction adjustment component (7) for adjusting the blowing angle.

7. A method for processing polyester mother yarn according to claim 6, characterized in that: The upper end of the hair dryer (21) is provided with an adapter seat (24) which fits with the spinneret (1), and the adapter seat (24) is fixedly connected to the spinneret (1) via a threaded member. The top of the hair dryer (21) is provided with an annular air inlet ring (25), and the air inlet ring (25) is connected to an air inlet pipe (26). An air inlet cavity (27) which is interconnected is reserved between the air inlet ring (25) and the hair dryer (21).

8. The method for processing polyester mother yarn according to claim 6, characterized in that: The direction adjustment component (7) comprises a direction adjustment rod (71) vertically mounted in the hair dryer (21) and adjacent to the strip-shaped air outlet (22); the direction adjustment rod (71) is rotatably connected to the hair dryer (21) and has a direction adjustment gear (72) mounted on its upper end; the direction adjustment gear (72) is meshed with a direction adjustment ring (73) for transmission; the direction adjustment ring (73) is meshed with a direction adjustment motor (74) for transmission via a speed change gear set; the direction adjustment rod (71) is connected to a direction adjustment plate (75) that can be opened and closed relative to the strip-shaped air outlet (22); the direction adjustment rod (71) and its direction adjustment plate (75) are arranged in pairs on both sides of the strip-shaped air outlet (22); the direction of opening and closing of the direction adjustment plate (75) connected to one of the direction adjustment rods (71) is outward relative to the strip-shaped air outlet (22), and the direction of opening and closing of the direction adjustment plate (75) connected to the other direction adjustment rod (71) is inward relative to the strip-shaped air outlet.

9. The method for processing polyester mother yarn according to claim 6, characterized in that: The direction adjustment component (7) comprises a direction adjustment frame (8) which is slidably mounted inside the hair dryer (21) up and down, the direction adjustment frame (8) having a direction adjustment ring (81) which is annular and corresponds one to one with the annular air outlet (23), the direction adjustment ring (81) being connected via a vertically arranged direction adjustment strip (82), the direction adjustment strip (82) being circumferentially limited and axially slidable with the hair dryer (21), the lower end of the direction adjustment strip (82) being connected to the hair dryer (21) A lifting screw (83) is installed between the two ends of the adjusting ring (81); the adjusting piece (84) is movably connected to the adjusting ring (81); the adjusting piece (84) is plugged into and movably connected to the adjusting frame (85) at the upper end of the annular air outlet (23); the adjusting pieces (84) are arranged in a centrally symmetrical manner; a closing plate (86) is movably installed between adjacent adjusting pieces (84) to close the gap between them; the opening and closing direction of the adjusting piece (84) is outward relative to the annular air outlet (23).

10. The method for processing polyester mother yarn according to claim 3, characterized in that: The filament forming assembly (3) comprises a plurality of transmission guide rollers (31), and a transmission mesh cloth (32) is transmission-connected between the transmission guide rollers (31); the suction assembly (4) is installed above the transmission mesh cloth (32); the suction assembly (4) comprises a suction pipe (41) arranged on both sides above the transmission mesh cloth (32), the suction pipe (41) has a suction port (42) extending in the radial direction, and both ends of the suction pipe (41) are rotationally connected to a suction bracket (43).

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