Regenerated polyester fiber melt extrusion molding device

Abstract

The invention discloses a regenerated polyester fiber melt extrusion molding device, which comprises a molding tower, an extrusion channel and a fixing seat, in the use process of the regenerated polyester fiber melt extrusion molding device, an atomization nozzle positioned on the surface of an annular inclined surface can spray atomized water vapor to the annular inclined surface area, and when the water vapor is in contact with a polyester fiber silk thread, the water vapor can be sprayed to the annular inclined surface area; heat in the polyester fiber silk yarn can be subjected to contact cooling, moisture in water vapor absorbs heat and is vaporized, vaporized gas is discharged outwards through a gas valve on the surface of the forming tower, the polyester fiber silk yarn subjected to contact cooling can be rapidly cooled and formed, and the forming speed of the polyester fiber silk yarn is guaranteed; when the polyester fiber silk threads enter the annular lantern ring area through the flow guide inclined face, the polyester fiber silk threads can be blocked in a partitioned mode through the partition columns, so that the polyester fiber silk threads are evenly distributed into multiple partitions, excessive stacking of the polyester fiber silk threads is reduced, mutual extrusion and breakage among the polyester fiber silk threads are avoided, and the service life of the polyester fiber silk threads is prolonged. And the normal calendering operation of the polyester fiber silk thread bundle can be ensured.

Description

Technical Field

[0001] The invention relates to the technical field of raw polyester fiber processing, in particular to a regenerated polyester fiber melt extrusion molding device. Background Art

[0002] Polyester fiber, referred to as PET fiber, is a synthetic fiber, which is formed by connecting the chain segments in the macromolecular chain through ester groups. Polyester fiber is a synthetic fiber made by chemical condensation of organic dibasic acids and diols. It is a kind of high molecular compound. Polyester fiber is the most important type of synthetic fiber.

[0003] Polyester fiber has many advantages. First, it has excellent wrinkle resistance and shape retention. Clothes made from it are not easy to wrinkle during wearing and can maintain their original shape. Secondly, polyester fiber has high strength and elastic recovery ability, making the woven fabric strong and durable, and can quickly recover to its original shape. In addition, polyester fiber is also resistant to wear and tear and does not stick to hair, making the fabric look neater.

[0004] Polyester fiber has many advantages, such as high breaking strength and elastic modulus, moderate resilience, excellent heat setting effect, good heat resistance and light resistance. Its melting point is about 255℃, and its glass transition temperature is about 70℃. It is stable in shape under a wide range of use conditions, and the fabric is washable and wear-resistant. In addition, polyester fiber also has excellent resistance to organic solvents, soaps, detergents, bleaching liquids, antioxidants, etc., as well as good corrosion resistance and stability to weak acids and weak bases. Therefore, it has a wide range of uses in the manufacture of home textiles and the manufacture of industrial protective clothing. With the rapid development of the petroleum industry, the raw materials for the production of polyester fibers have become more abundant and cheaper.

[0005] In the prior art, a regenerated polyester fiber melt extrusion molding device is disclosed in the publication number "CN206243653U". The present invention provides a regenerated polyester fiber melt extrusion molding device that can automatically extrude polyester fibers, automatically control the flow of coolant, and automatically mold polyester fibers. A regenerated polyester fiber melt extrusion molding device comprises: a bottom plate, on which a melting mechanism is provided; a cutting mechanism, on which a cutting mechanism is provided on the melting mechanism; an extrusion mechanism, on which an extrusion mechanism is provided. The present invention heats the polyester fiber particles by emitting heat through an electromagnetic heating ring, so that the polyester fiber particles are transformed from a solid state to a solid-liquid coexistence state, thereby achieving the effect of the electromagnetic heating ring dissolving the polyester fiber particles; the cylinder telescopic rod drives the limiting tool and the guide rod to move inward, so that the limiting tool cuts the polyester fibers, thereby achieving the effect of the limiting tool cutting the polyester fibers.

[0006] However, the existing technology still has major deficiencies, such as:

[0007] In the above-mentioned device and the prior art, when the material bag is pressed through the spinneret for spinning, the rapid cooling and forming of the spinneret cannot be guaranteed. The spinneret lacks calendering treatment after being ejected, resulting in poor ductility of the spinneret after hardening, which makes the polyester fiber line easy to break. Summary of the invention

[0008] The object of the present invention is to provide a regenerated polyester fiber melt extrusion molding device to solve the problems raised in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solutions: a regenerated polyester fiber melt extrusion molding device, comprising a molding tower, an extrusion channel and a fixing seat, wherein the extrusion channel is arranged at the top of the molding tower, the fixing seat is symmetrically arranged on the outer surface of the extrusion channel, the extrusion channel is arranged in an arc shape, two groups of the extrusion channels are buckled and sealed, a stopper is arranged at the top of the molding tower near the bottom of the extrusion channel, and the stoppers are arranged in a ring shape and are arranged in a plurality of groups;

[0010] A liquid polyester fiber material pressurized spinning unit, which is disposed in the top area of ​​the fixing seat and is used for performing pressurized spinning on the liquid material in the liquid material bag placed inside the extrusion channel;

[0011] A polyester fiber thread surface cooling and molding unit, which is arranged at the top of the extrusion channel near the spinning area and is used for rapidly cooling and hardening the polyester fiber threads after spinning;

[0012] The polyester fiber thread surface flexible stretching and calendering unit is arranged in the bottom area of ​​the molding tower, and is used for calendering the surface of the molded polyester fiber thread to improve the softness and tensile strength of the polyester fiber thread.

[0013] Preferably, the liquid polyester fiber material pressurized spinning unit comprises a flexible material bag, the interior of the flexible material bag is filled with liquid polyester fiber material, the bottom of the flexible material bag is connected to an annular spinneret, the flexible material bag is placed in the inner cavity of the extrusion channel, the annular spinneret is buckled on the top of several groups of blocks, a vertical hydraulic rod is installed on the top of the fixed seat, a top platform is installed on the top of the movable end of the vertical hydraulic rod, an extension column is installed at the bottom of the top platform, a weight pressure plate is provided at the bottom of the extension column, and the weight pressure plate is movably inserted into the interior of the extrusion channel.

[0014] Preferably, the polyester fiber thread surface cooling molding unit includes an annular atomization bin, which is installed on the inner wall of the molding tower near the block area, a central channel is provided in the central area of ​​the surface of the annular atomization bin, the central channel is concentrically arranged with the bottom of the annular spinneret, an annular slope is provided at the bottom of the annular atomization bin, atomizing nozzles are provided on the surface of the annular slope, and the atomizing nozzles are arranged in a ring shape in multiple groups.

[0015] Preferably, the polyester fiber thread surface cooling molding unit also includes a directional guide platform, which is arranged at the bottom of the annular atomization bin, and the directional guide platform is installed on the inner wall of the molding tower. A center guide plate is embedded in the surface of the directional guide platform, and a center limiting hole is provided on the surface of the center guide plate. A bottom sleeve plate is provided at the bottom of the directional guide platform, and a heat storage block is embedded in the bottom sleeve plate, and the heat storage blocks are arranged in four groups in a ring shape.

[0016] Preferably, the polyester fiber thread surface flexible stretching and calendering unit includes a heating part, the heating part includes a guide hopper, the guide hopper is arranged at the bottom of the directional guide platform, the guide hopper is also installed on the inner wall of the forming tower, the surface of the guide hopper is provided with a guide slope, an annular heat pipe is installed on the outside of the guide hopper, the annular heat pipe is arranged in multiple groups at intervals, and the bottom of the annular heat pipe is connected with a heat insulating conduit.

[0017] Preferably, the polyester fiber thread surface flexible stretching calendering unit also includes a calendering part, the calendering part includes a booster frame, the booster frame is installed at the bottom of the insulation pipe, movable guide rails are symmetrically installed at the bottom of the booster frame, a side sliding table is installed on the movable end of the movable guide rail, a calendering guide roller is arranged on one side of the side sliding table, and adjacent calendering guide rollers are symmetrically arranged.

[0018] Preferably, the polyester fiber surface flexible stretching and calendering unit also includes a turning part, which includes an annular guide rail, which is embedded in the top of the inner cavity of the thermal insulation tube, and an annular ring is installed on the rotating end of the annular guide rail. Partition columns are installed at intervals inside the annular ring, and partition grooves are arranged between adjacent partition columns.

[0019] Preferably, a base frame is provided at the bottom of the molding tower, and the base frames are spaced apart into several groups.

[0020] Preferably, the bottom of the molding tower is open, and a finished product bin is installed at the bottom of the molding tower.

[0021] Preferably, the aperture of the central limiting hole surface is larger than the aperture of the spinneret holes on the surface of the annular spinneret.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. When in use, the top platform pushes the heavy pressure plate to be inserted into the extrusion channel through the extension column during the descent process. After being inserted into the extrusion channel, the heavy pressure plate will squeeze the flexible material bag, and the liquid polyester fiber material filled in the flexible material bag will be quickly sprayed out into filaments through the annular spinneret. When the spinning is completed, the flexible material bag and the annular spinneret can be replaced in time by removing the extrusion channel to ensure the spinning efficiency of the liquid polyester fiber material;

[0024] 2. When in use, the atomizing nozzle located on the surface of the annular slope will spray atomized water vapor to the annular slope area. When the water vapor contacts the polyester fiber thread, it will contact and cool down the internal heat of the polyester fiber thread. The water in the water vapor absorbs heat and vaporizes. The vaporized gas is discharged outward through the gas valve on the surface of the forming tower. After the contact cooling, the polyester fiber thread will be quickly cooled and formed, ensuring the forming rate of the polyester fiber thread;

[0025] 3. When in use, the polyester fiber threads will enter the annular ring area through the guide slope. The partition columns on the surface of the annular ring are set in multiple groups. The partition columns will partition the polyester fiber thread bundles, so that the polyester fiber threads are evenly distributed into multiple partitions, reducing excessive stacking of polyester fiber thread bundles, avoiding mutual extrusion and rupture between polyester fiber thread bundles, and ensuring that the polyester fiber thread bundles in a single partition can undergo normal calendering operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of the device of the present invention;

[0027] Figure 2 It is a partial schematic diagram of the flexible material bag and the annular spinneret in the present invention;

[0028] Figure 3 It is a partial schematic diagram of the annular atomization bin in the present invention;

[0029] Figure 4 It is a schematic diagram of the directional guide part of the present invention;

[0030] Figure 5 It is a partial schematic diagram of the heat storage block in the present invention;

[0031] Figure 6 It is a schematic diagram of the guide hopper part in the present invention;

[0032] Figure 7 It is a schematic diagram of the heat-insulated conduit portion of the present invention;

[0033] Figure 8 It is a partial schematic diagram of the pressure frame and calendering guide rollers in the present invention.

[0034] In the figure: 1. forming tower; 11. base frame; 12. block; 13. finished product bin; 2. extrusion channel; 3. fixed seat; 31. vertical hydraulic rod; 4. top platform; 41. extension column; 42. heavy pressure plate; 5. flexible material bag; 51. annular spinneret; 6. annular atomization bin; 61. annular slope; 62. atomization nozzle; 63. center channel; 7. directional guide platform; 71. center guide plate; 72. center limit hole; 73. bottom sleeve plate; 74. heat storage block; 8. guide hopper; 81. insulation conduit; 82. guide slope; 83. annular heat pipe; 84. annular guide rail; 85. annular sleeve; 86. partition column; 87. partition groove; 9. booster frame; 91. side slide table; 92. calendering guide roller; 93. movable guide rail. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] See also Figure 1-8 , the present invention provides a technical solution:

[0037] Embodiment 1: A regenerated polyester fiber melt extrusion molding device: comprising a molding tower 1, an extrusion channel 2 and a fixing seat 3, wherein the extrusion channel 2 is arranged at the top of the molding tower 1, the fixing seat 3 is symmetrically arranged on the outer surface of the extrusion channel 2, the extrusion channel 2 is arranged in an arc shape, two groups of extrusion channels 2 are buckled and sealed, and a stopper 12 is arranged at the top of the molding tower 1 near the bottom of the extrusion channel 2, and the stopper 12 is arranged in a ring shape and is arranged in a plurality of groups;

[0038] A base frame 11 is arranged at the bottom of the forming tower 1, and the base frames 11 are arranged in a plurality of groups at intervals.

[0039] The bottom of the forming tower 1 is open, and a finished product bin 13 is installed at the bottom of the forming tower 1 .

[0040] A liquid polyester fiber material pressurized spinning unit, which is arranged in the top area of ​​the fixing seat 3 and is used for performing pressurized spinning on the liquid material body in the liquid material bag placed inside the extrusion channel 2;

[0041] The liquid polyester fiber material pressurized spinning unit includes a flexible material bag 5, which is filled with liquid polyester fiber material. The bottom of the flexible material bag 5 is connected to an annular spinneret 51, and the flexible material bag 5 is placed in the inner cavity of the extrusion channel 2. The annular spinneret 51 is buckled on the top of several groups of blocks 12. A vertical hydraulic rod 31 is installed on the top of the fixed seat 3, and a top platform 4 is installed on the top of the movable end of the vertical hydraulic rod 31. An extension column 41 is installed at the bottom of the top platform 4, and a weight plate 42 is provided at the bottom of the extension column 41. The weight plate 42 is movably inserted into the extrusion channel 2.

[0042] In this embodiment, the heavy pressure plate 42 will squeeze the flexible material bag 5 after being inserted into the extrusion channel 2, and the liquid polyester fiber material filled in the flexible material bag 5 will be quickly sprayed out into filaments through the annular spinneret 51. When the spinning is required to be completed, the flexible material bag 5 and the annular spinneret 51 can be replaced in time by removing the extrusion channel 2 to ensure the spinning efficiency of the liquid polyester fiber material.

[0043] A polyester fiber thread surface cooling and molding unit is provided at the top of the extrusion channel 2 near the spinning area, and is used for rapidly cooling and hardening the polyester fiber thread after spinning;

[0044] The polyester fiber thread surface cooling molding unit includes an annular atomization bin 6, which is installed on the inner wall of the molding tower 1 near the block 12. A central channel 63 is provided in the central area of ​​the surface of the annular atomization bin 6. The central channel 63 is concentrically arranged with the bottom of the annular spinneret 51. An annular slope 61 is provided at the bottom of the annular atomization bin 6. Atomizing nozzles 62 are provided on the surface of the annular slope 61. The atomizing nozzles 62 are arranged in a ring shape in multiple groups.

[0045] The polyester fiber thread surface cooling molding unit also includes a directional guide platform 7, which is arranged at the bottom of the annular atomization bin 6, and the directional guide platform 7 is installed on the inner wall of the molding tower 1. A center guide plate 71 is embedded in the surface of the directional guide platform 7, and a center limiting hole 72 is arranged on the surface of the center guide plate 71. A bottom sleeve plate 73 is arranged at the bottom of the directional guide platform 7, and a heat storage block 74 is embedded in the bottom sleeve plate 73. The heat storage blocks 74 are arranged in four groups in a ring shape.

[0046] The surface diameter of the central limiting hole 72 is larger than the surface diameter of the spinneret holes of the annular spinneret 51 .

[0047] In this embodiment, the atomizing nozzle 62 sprays atomized water vapor toward the annular inclined surface 61 area. When the water vapor contacts the polyester fiber thread, the internal heat of the polyester fiber thread is contact cooled. The moisture in the water vapor absorbs heat and vaporizes. The vaporized gas is discharged outward through the gas valve on the surface of the forming tower 1. The polyester fiber thread after contact cooling will be quickly cooled and formed, thereby ensuring the forming rate of the polyester fiber thread.

[0048] Embodiment 2:

[0049] Based on the first embodiment, in order to prevent the polyester fiber thread from becoming brittle after cooling and affecting the tensile effect of the polyester fiber thread, a polyester fiber thread surface flexible stretching and calendering unit is provided in this embodiment, and the polyester fiber thread surface flexible stretching and calendering unit can perform heat preservation calendering treatment on the polyester fiber thread to avoid the above problem;

[0050] The polyester fiber thread surface flexible stretching and calendering unit is arranged in the bottom area of ​​the molding tower 1, and is used for calendering the surface of the formed polyester fiber thread to improve the softness and tensile strength of the polyester fiber thread.

[0051] The polyester fiber surface flexible stretching and calendering unit includes a heating part, which includes a guide hopper 8, which is arranged at the bottom of the directional guide platform 7, and the guide hopper 8 is also installed on the inner wall of the forming tower 1. The surface of the guide hopper 8 is provided with a guide slope 82, and an annular heat pipe 83 is installed on the outside of the guide hopper 8. The annular heat pipe 83 is arranged in multiple groups at intervals, and the bottom of the annular heat pipe 83 is connected to an insulating conduit 81.

[0052] The polyester fiber thread surface flexible stretching calendering unit also includes a calendering part, which includes a booster frame 9, which is installed at the bottom of the insulation pipe 81. A movable guide rail 93 is symmetrically installed at the bottom of the booster frame 9. A side slide table 91 is installed on the movable end of the movable guide rail 93. A calendering guide roller 92 is arranged on one side of the side slide table 91, and adjacent calendering guide rollers 92 are symmetrically arranged.

[0053] The polyester fiber surface flexible stretching and calendering unit also includes a steering part, which includes an annular guide rail 84, which is embedded in the top of the inner cavity of the heat-insulating conduit 81, and an annular ring 85 is installed on the rotating end of the annular guide rail 84. Partition columns 86 are installed at intervals inside the annular ring 85, and partition grooves 87 are arranged between adjacent partition columns 86.

[0054] In this embodiment, the polyester fiber threads will enter the annular ring 85 area through the guide slope 82. The partition columns 86 on the surface of the annular ring 85 are arranged in multiple groups. The partition columns 86 will partition the polyester fiber thread bundles so that the polyester fiber threads are evenly distributed into multiple partitions, reducing excessive stacking of the polyester fiber thread bundles, avoiding mutual squeezing and rupture between the polyester fiber thread bundles, and ensuring that the polyester fiber thread bundles in a single partition can undergo normal calendering operations.

[0055] Working principle: When the device is in use, the operator removes one group of extrusion channels 2, and then puts the flexible material bag 5 filled with liquid polyester fiber material into another group of extrusion channels 2, so that the annular spinneret 51 is buckled on the block 12, and then one group of extrusion channels 2 is sealed and buckled on the surface of another group of extrusion channels 2, and then drives the vertical hydraulic rod 31 to converge, and the movable end of the vertical hydraulic rod 31 drives the top platform 4 to partially descend. During the descent process, the top platform 4 pushes the heavy pressure plate 42 to be inserted into the extrusion channel 2 through the extension column 41. After being inserted into the extrusion channel 2, the heavy pressure plate 42 will squeeze the flexible material bag 5, and the liquid polyester fiber material filled in the flexible material bag 5 will be quickly sprayed out into silk through the annular spinneret 51. When the spinning is completed, the flexible material bag 5 and the annular spinneret 51 can be replaced in time by removing the extrusion channel 2 to ensure the spinning efficiency of the liquid polyester fiber material;

[0056] When the liquid polyester fiber material is ejected outward through the annular spinneret 51, the silk thread ejected from the annular spinneret 51 will fall vertically through the central channel 63 area on the surface of the annular atomization chamber 6. When the silk thread enters the annular slope 61 area below the central channel 63, the atomizing nozzle 62 located on the surface of the annular slope 61 will spray atomized water vapor to the annular slope 61 area. When the water vapor contacts the polyester fiber thread, the heat inside the polyester fiber thread will be contacted and cooled. The water in the water vapor absorbs heat and vaporizes. The vaporized gas is discharged outward through the gas valve on the surface of the molding tower 1. The polyester fiber thread after contact cooling will be quickly cooled and formed, thereby ensuring the molding rate of the polyester fiber thread.

[0057] After the polyester fiber yarns are cooled and quickly formed, in order to avoid the stacking of the polyester fiber yarns, which causes a large number of polyester fiber yarns to be accumulated together and affects the stretching and calendering treatment effect of the polyester fiber yarns, when the polyester fiber yarns fall into the surface of the guide hopper 8, the polyester fiber yarns will enter the annular ring 85 area through the guide slope 82. The partition columns 86 on the surface of the annular ring 85 are arranged in multiple groups. The partition columns 86 will partition the polyester fiber yarn bundles, so that the polyester fiber yarns are evenly distributed into multiple partitions, reducing the excessive stacking of the polyester fiber yarn bundles, avoiding mutual extrusion and rupture between the polyester fiber yarn bundles, and ensuring that the polyester fiber yarn bundles in a single partition can be normally calendered.

[0058] After the polyester fiber yarn bundle is partitioned, the polyester fiber yarn bundle will enter the booster frame 9 area. Two sets of side slides 91 are set on the top of the booster frame 9. When the yarn bundle enters between adjacent side slides 91, since the partition column 86 is perpendicular to the calendering guide roller 92, in order to keep the polyester fiber yarn bundle parallel to the calendering guide roller 92 for calendering, the annular guide rail 84 can be driven. The rotating end of the annular guide rail 84 will drive the annular ring 85 and the partition column 86 to rotate. In order to ensure the internal temperature of the polyester fiber yarn bundle, the polyester fiber yarn bundle can be effectively pressed and stretched. The annular heat pipe 83 arranged in the hopper 8 area will continue to maintain the temperature of the guide hopper 8 area to prevent the polyester fiber bundle from excessive cooling and brittleness. When the annular ring 85 and the partition column 86 rotate to be parallel to the calendering guide roller 92, the calendering guide roller 92 is parallel to the partition column 86 area. The polyester fiber bundle in the partition column 86 can evenly enter between adjacent calendering guide rollers 92. The movable guide rail 93 can be driven to make the two sets of side slides 91 approach each other, so that the calendering guide roller 92 can calender the polyester fiber bundle to ensure the tensile strength of the polyester fiber bundle.

[0059] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A regenerated polyester fiber melt extrusion molding device, characterized in that: The invention comprises a forming tower (1), an extrusion channel (2) and a fixing seat (3), wherein the extrusion channel (2) is arranged at the top of the forming tower (1), the fixing seat (3) is symmetrically arranged on the outer surface of the extrusion channel (2), the extrusion channel (2) is arranged in an arc shape, two groups of the extrusion channels (2) are buckled and sealed, and a stopper (12) is arranged at the top of the forming tower (1) near the bottom of the extrusion channel (2), and the stoppers (12) are arranged in a ring shape into a plurality of groups; A liquid polyester fiber material pressurized spinning unit, the liquid polyester fiber material pressurized spinning unit being arranged in the top area of ​​the fixing seat (3) and being used for performing pressurized spinning treatment on the liquid material body in the liquid material bag placed inside the extrusion channel (2); A polyester fiber thread surface cooling and molding unit, the polyester fiber thread surface cooling and molding unit is arranged at the top of the extrusion channel (2) near the spinning area, and is used for rapidly cooling and hardening the polyester fiber thread after spinning; A polyester fiber thread surface flexible stretching and calendering unit, wherein the polyester fiber thread surface flexible stretching and calendering unit is arranged in the bottom area of ​​the molding tower (1) and is used for calendering the surface of the molded polyester fiber thread to improve the softness and tensile strength of the polyester fiber thread.

2. A regenerated polyester fiber melt extrusion molding device according to claim 1, characterized in that: The liquid polyester fiber material pressurized spinning unit comprises a flexible material bag (5), the interior of the flexible material bag (5) is filled with liquid polyester fiber material, the bottom of the flexible material bag (5) is connected to an annular spinneret (51), the flexible material bag (5) is placed in the inner cavity of the extrusion channel (2), the annular spinneret (51) is buckled on the top of a plurality of groups of the block blocks (12), a vertical hydraulic rod (31) is installed on the top of the fixed seat (3), a top platform (4) is installed on the top of the movable end of the vertical hydraulic rod (31), an extension column (41) is installed on the bottom of the top platform (4), a weight plate (42) is arranged at the bottom of the extension column (41), and the weight plate (42) is movably inserted into the interior of the extrusion channel (2).

3. A regenerated polyester fiber melt extrusion molding device according to claim 2, characterized in that: The polyester fiber thread surface cooling molding unit comprises an annular atomizing bin (6), wherein the annular atomizing bin (6) is installed on the inner wall of the molding tower (1) near the block (12), a central channel (63) is provided in the central area of ​​the surface of the annular atomizing bin (6), the central channel (63) is arranged concentrically with the bottom of the annular spinneret (51), an annular inclined surface (61) is provided at the bottom of the annular atomizing bin (6), an atomizing nozzle (62) is provided on the surface of the annular inclined surface (61), and the atomizing nozzle (62) is arranged in a ring shape in multiple groups.

4. A regenerated polyester fiber melt extrusion molding device according to claim 3, characterized in that: The polyester fiber thread surface cooling molding unit also includes a directional guide platform (7), which is arranged at the bottom of the annular atomization bin (6), and the directional guide platform (7) is installed on the inner wall of the molding tower (1). A center guide plate (71) is embedded in the surface of the directional guide platform (7), and a center limiting hole (72) is arranged on the surface of the center guide plate (71). A bottom sleeve plate (73) is arranged at the bottom of the directional guide platform (7), and a heat storage block (74) is embedded in the bottom sleeve plate (73). The heat storage blocks (74) are arranged in four groups in a ring shape.

5. The regenerated polyester fiber melt extrusion molding device according to claim 1, characterized in that: The polyester fiber thread surface flexible stretching and calendering unit comprises a heating part, and the heating part comprises a guide hopper (8), the guide hopper (8) is arranged at the bottom of the directional guide platform (7), and the guide hopper (8) is also installed on the inner wall of the forming tower (1), the surface of the guide hopper (8) is provided with a guide slope (82), and an annular heat pipe (83) is installed on the outside of the guide hopper (8), and the annular heat pipe (83) is arranged in multiple groups at intervals, and the bottom of the annular heat pipe (83) is connected to a heat insulation pipe (81).

6. A regenerated polyester fiber melt extrusion molding device according to claim 5, characterized in that: The polyester fiber thread surface flexible stretching calendering unit also includes a calendering section, which includes a booster frame (9), which is installed at the bottom of the heat-insulating conduit (81), and a movable guide rail (93) is symmetrically installed at the bottom of the booster frame (9), and a side slide (91) is installed on the movable end of the movable guide rail (93), and a calendering guide roller (92) is arranged on one side of the side slide (91), and adjacent calendering guide rollers (92) are symmetrically arranged.

7. A regenerated polyester fiber melt extrusion molding device according to claim 6, characterized in that: The polyester fiber surface flexible stretching and calendering unit also includes a steering part, which includes an annular guide rail (84), which is embedded in the top of the inner cavity of the thermal insulation conduit (81), and an annular ring (85) is installed on the rotating end of the annular guide rail (84), and partition columns (86) are installed inside the annular ring (85) at intervals, and partition grooves (87) are provided between adjacent partition columns (86).

8. The regenerated polyester fiber melt extrusion molding device according to claim 1, characterized in that: A base frame (11) is arranged at the bottom of the molding tower (1), and the base frames (11) are arranged in a plurality of groups at intervals.

9. The regenerated polyester fiber melt extrusion molding device according to claim 1, characterized in that: The bottom of the molding tower (1) is open, and a finished product bin (13) is installed at the bottom of the molding tower (1).

10. The regenerated polyester fiber melt extrusion molding device according to claim 4, characterized in that: The surface diameter of the central limiting hole (72) is larger than the surface diameter of the spinneret holes of the annular spinneret plate (51).

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