Polyester yarn production equipment

Abstract

The invention relates to the technical field of chemical fiber production, in particular to polyester yarn production equipment which comprises a yarn outlet mechanism, a wire harness guide mechanism and a winding recycling mechanism, the yarn outlet mechanism comprises a raw material box and a yarn outlet formed in the side wall of the raw material box, and the wire harness guide mechanism comprises a first guide roller and a second guide roller; the rotating speed of the first guide roller and the rotating speed of the second guide roller are adjusted through independently-controlled driving devices respectively, and therefore the tensile force of the polyester tows is adjusted through the rotating speed difference. After the polyester tows are output from the tow outlet, the direction of the polyester tows is changed through the first guide roller, then the direction of the polyester tows is changed for the second time through the second guide roller, the polyester tows enter the winding and recycling mechanism, and the winding and recycling mechanism is used for winding and recycling the polyester tows. The polyester tow winding device has the advantages that polyester tows can be directly wound and recycled after being produced, the polyester tows can be ensured to be subjected to uniform tension during winding, and the phenomena of twisting and entangling during final winding are avoided.

Description

Technical Field

[0001] This application relates to the technical field of chemical fiber production, and in particular to a polyester filament production equipment. Background Technology

[0002] In the field of wire harness winding technology, with the continuous development of industrial production, the application scenarios of wire harnesses are becoming increasingly widespread, and the requirements for the quality and efficiency of wire harness winding are also becoming higher and higher. High-quality wire harness winding can ensure the stability and reliability of wire harnesses in subsequent use, reduce the probability of failure, improve production efficiency, and reduce production costs, playing a vital role in many fields such as electronics, automobiles, and aerospace.

[0003] To address issues related to wire harness winding, the industry commonly employs various methods. A common approach is to use a standard winding mechanism, which is relatively simple in structure and low in cost. Other devices incorporate positioning and detection components and winding components. These devices use a lower positioning and pressing plate to press the wire harness, and by collecting the wire harness and increasing its height, the pressure on the lower positioning and pressing plate causes it to move upwards, compressing the damping spring assembly, thus achieving a certain level of positioning and tension control.

[0004] However, currently common winding mechanisms are often only used for winding and recycling wire harnesses, separate from wire harness production. Therefore, when the wire harness is wound and recycled separately, one end of the wire harness is usually subjected to tension from the winding mechanism, while the other end is not subjected to tension or cannot be guaranteed to receive uniform tension during winding. Ultimately, insufficient tension in the wire harness leads to tangling and broken strands when the wire harness is wound into a coil, seriously affecting product quality. Moreover, if too much tension is preset in the middle of the wire harness, it will cause uneven distribution of wire harness density, and the strength of the section with higher tension will decrease, failing to meet product parameter requirements. Summary of the Invention

[0005] In order to enable direct winding and recycling of polyester filaments after production, and to ensure that the polyester filaments are subjected to uniform tension during winding to prevent tangling and strand breakage during the final winding, the purpose of this application is to provide a polyester filament production equipment, which adopts the following technical solution: This includes a wire feeding mechanism, a wire harness guiding mechanism, and a winding and rewinding mechanism; The yarn output mechanism includes a raw material box and a yarn output port provided on the side wall of the raw material box for outputting polyester yarn bundles; The wire harness guiding mechanism includes a first guide roller and a second guide roller. The first guide roller and the second guide roller are respectively driven by independently controlled drive devices to adjust their rotation speed, thereby adjusting the tension of the polyester filament bundle through the speed difference. After the polyester filament bundle is output from the filament outlet, it first passes through the first guide roller to change direction, then passes through the second guide roller to change direction a second time, and finally enters the winding and recycling mechanism. The winding and recycling mechanism is used to wind and recycle polyester filament bundles.

[0006] By adopting the above technical solution, a complete polyester filament production system is formed by setting up a filament feeding mechanism, a wire harness guiding mechanism, and a winding and recovery mechanism. The wire harness guiding mechanism uses a first guide roller and a second guide roller, each with its own independently controlled drive device to adjust its rotational speed, thereby precisely controlling the tension of the polyester filament bundle using the speed difference. After the polyester filament bundle is produced, it can be directly wound and recovered. Furthermore, during winding, it avoids situations where the filament bundle is too loose or too tight during production, effectively reducing the risk of filament breakage and deformation, and improving product quality and stability.

[0007] Optionally, multiple filament outlets are provided, and they are located on the same horizontal line.

[0008] By adopting the above technical solution, the synchronous output of multiple polyester filament bundles is achieved, significantly improving production efficiency. The horizontal arrangement of multiple filament outlets ensures neat and orderly output of the filament bundles, reduces tangling and interference between bundles, and facilitates subsequent guiding and winding operations. Furthermore, this design simplifies the equipment structure, reduces maintenance costs, and is suitable for large-scale continuous production, enhancing the equipment's practicality and economy.

[0009] Optionally, a bundled slot is provided between the filament outlet and the first guide roller, and between the second guide roller and the winding and recovery mechanism. The bundled slot is a groove-shaped structure with a gathering function, used to gather the spacing of the polyester filament bundles and distribute them evenly on the first guide roller and the second guide roller.

[0010] By adopting the above technical solution, overlapping or misalignment of the filament bundles during the guiding process is prevented, ensuring that each filament bundle receives consistent tension and guidance. This improves the uniformity of winding and the consistency of the product, while reducing quality defects caused by uneven filament bundle distribution and enhancing overall production precision.

[0011] Optionally, the winding and recycling mechanism includes a polyester filament winding machine and a polyester filament positioning plate, wherein the polyester filament positioning plate is disposed above the polyester filament winding machine.

[0012] By adopting the above technical solution, the polyester filament bundle is guided accurately into the winding machine, preventing swaying or deviation during the winding process and ensuring neat and tight winding. The polyester filament positioning plate, as an auxiliary guiding device, simplifies the winding operation, improves winding efficiency and package quality, and reduces the need for manual intervention, making the equipment more suitable for high-speed continuous production environments.

[0013] Optionally, the polyester filament positioning plate is provided with positioning holes, through which the polyester filament bundle passes to the polyester filament winding machine.

[0014] By adopting the above technical solution, the position of the filament bundle is further precisely fixed, preventing the bundle from shaking or crossing when entering the winding machine, thus ensuring a stable and reliable winding process. The positioning holes serve as guides and limits, reducing tension fluctuations during winding, improving the neatness and consistency of the package, and contributing to the production of higher quality polyester filament rolls.

[0015] Optionally, multiple polyester filament winding machines are provided, each corresponding to a filament outlet; the positioning hole diameter on the polyester filament positioning plate is adjustable, which can be achieved by replacing bushings or adjusting components to adapt to different polyester filament bundle thicknesses.

[0016] By adopting the above technical solution, parallel processing of multiple filament bundles is achieved, significantly improving production efficiency. The adjustable aperture function allows the equipment to adapt to polyester filament bundles of different thicknesses, enhancing the equipment's flexibility and versatility, reducing the time spent changing parts, lowering production costs, and ensuring the winding quality of filament bundles of various specifications.

[0017] Optionally, a cooling assembly is provided between the filament outlet and the first guide roller for cooling the polyester filament bundle.

[0018] By adopting the above technical solutions, the temperature of the filament bundle is reduced in a timely manner, preventing the bundle from sticking together, deforming, or experiencing performance degradation due to overheating. The cooling component ensures that the filament bundle maintains a stable physical state before entering the guiding mechanism, improving the strength and uniformity of the bundle, thereby reducing production defects and enhancing the quality and durability of the final product.

[0019] Optionally, the rotational speed of the second guide roller is greater than that of the first guide roller.

[0020] By adopting the above technical solution, the tension control of the polyester filament bundle is further optimized. The higher rotational speed of the second guide roller can tighten the filament bundle, preventing slack and vibration, and ensuring smooth and unobstructed transmission. This dynamic tension adjustment reduces filament breakage and friction damage, improves production efficiency and product consistency, and makes the equipment more adaptable to high-speed operating conditions.

[0021] Optionally, the yarn feeding mechanism and the yarn guide mechanism are located above the winding and take-up mechanism. A plurality of parallel clamping plates are arranged in parallel between the yarn guide mechanism and the winding and take-up mechanism. A fine groove is formed between adjacent parallel clamping plates, and the polyester yarn bundle passes through the fine groove to keep the polyester yarn bundle on the same vertical plane.

[0022] By adopting the above technical solution, the yarn bundle is kept on the same vertical plane, preventing it from swinging, tangling, or shifting during descent. The parallel sandwich layer allows workers to stand on it, facilitating the installation and subsequent maintenance of the upper equipment. The fine grooves and slits between the sandwich plates improve winding accuracy and product quality, while also simplifying equipment layout and saving space.

[0023] Optionally, guide pulleys are provided in the grooves on the parallel clamping layer to reduce friction between the polyester filament bundles and the parallel clamping layer.

[0024] By adopting the above technical solutions, wear and fuzzing of the filament bundle during transmission are minimized, extending its service life. Guide pulleys ensure smoother filament bundle operation, reduce resistance and energy consumption, improve production efficiency, and decrease maintenance requirements, making the equipment more suitable for long-term continuous operation while ensuring the surface quality and overall performance of the filament bundle.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. A complete polyester filament production system is constructed by setting up a filament feeding mechanism, a filament guide mechanism, and a winding and recovery mechanism. The filament guide mechanism employs a first guide roller and a second guide roller, each with its own independently controlled drive device to adjust its rotational speed. This allows for precise control of the polyester filament tension using the speed difference. After the polyester filament is produced, it can be directly wound and recovered. Furthermore, during winding, it prevents the filament from becoming too loose or too tight during production, effectively reducing the risk of filament breakage and deformation, and improving product quality and stability. 2. The equipment utilizes a series of designs, including horizontally arranged multiple filament outlets, bundled slots for convergence, parallel clamping layers for guidance, and positioning plates with adjustable positioning holes, to achieve synchronous, orderly processing and efficient winding of multiple polyester filament bundles. These measures effectively prevent tangling and misalignment between filament bundles, ensuring neat and tight winding and greatly improving production efficiency. Simultaneously, the adjustable positioning hole diameter allows the equipment to flexibly adapt to filament bundles of different thicknesses, enhancing its versatility and production flexibility. 3. The equipment integrates auxiliary units such as cooling components and guide pulleys, further optimizing the production process. The cooling components can promptly cool and shape the filament bundles, preventing them from sticking together or degrading in performance due to overheating; while the guide pulleys significantly reduce frictional loss during the transport of the filament bundles, protecting their surface quality. These detailed designs work together to not only extend the service life of key components but also ensure that the finished polyester filament bundles have higher strength and a superior appearance. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the polyester filament production equipment; Figure 2 This is a partial bottom view of the structure of a polyester filament production equipment; In the picture, 1. Filament feeding mechanism; 11. Filament feeding port; 12. Raw material box; 2. Wire harness guiding mechanism, 21. First guide roller, 22. Second guide roller; 3. Winding and recycling mechanism; 31. Polyester filament winding machine; 32. Polyester filament positioning plate; 4. Bundling slot; 5. Parallel sandwich layer; 51. Fine groove; 6. Cooling components. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1 -Appendix Figure 2 This application will be described in further detail below.

[0028] A polyester filament production equipment, referring to Figure 1 The system includes a yarn output mechanism 1, a yarn guide mechanism 2, and a winding and recovery mechanism 3. The yarn output mechanism 1 outputs polyester yarn bundles. The yarn guide mechanism 2 includes a first guide roller 21 and a second guide roller 22. The first guide roller 21 and the second guide roller 22 are driven by independently controlled devices to adjust their rotational speeds, thereby adjusting the tension of the polyester yarn bundle through the speed difference. The winding and recovery mechanism 3 winds and recovers the polyester yarn bundle, achieving precise control of the polyester yarn bundle tension, avoiding tangling and broken yarn, and ensuring uniform winding of the yarn bundle. This is because the yarn output mechanism 1 stably outputs the yarn bundle, the yarn guide mechanism 2 adjusts the tension through the speed difference, and the winding and recovery mechanism 3 neatly winds the adjusted yarn bundle.

[0029] Specifically, refer to Figure 1The yarn output mechanism 1 includes a raw material box 12 and a yarn output port 11 located on the side wall of the raw material box 12. The raw material box 12 is typically made of a robust and durable metal material, such as stainless steel, to ensure it can withstand certain pressure and weight, and has good corrosion resistance and high-temperature resistance. The raw material box 12 is generally rectangular in shape and hollow inside, used to store the raw material of polyester yarn bundles. The polyester yarn bundle raw material is in a molten state. When polyester yarn bundle production is required, equipment inside the raw material box 12 provides air pressure, increasing the internal pressure of the raw material box 12, and then extruding the molten raw material from the yarn output port 11, thereby forming a filamentous bundle, i.e., polyester yarn bundle. The yarn output port 11 faces downwards and can be round, square, or other shapes, depending on the requirements. Its material can also be metal or high-temperature resistant plastic. The yarn output port 11 is located on the side wall of the raw material box 12 to facilitate the smooth output of the polyester yarn bundle. The filament outlet 11 can also be made of ceramic material. Ceramic material has a smooth surface, which can reduce friction between the polyester filament bundle and the filament outlet 11, and extend the service life of the polyester filament bundle. The filament outlet 11 and the raw material box 12 can be connected by welding or threading to ensure a tight connection and prevent raw material leakage.

[0030] Furthermore, multiple outlets 11 are provided, all positioned on the same horizontal line. Multiple outlets 11 can simultaneously output multiple polyester filament bundles, improving production efficiency. The design of the outlets 11 being on the same horizontal line ensures that each polyester filament bundle has the same starting height and horizontal position upon output, which is beneficial for subsequent guiding and winding operations. The number of outlets 11 can be adjusted according to production needs; for example, the number of outlets 11 can be increased during large-scale production.

[0031] Furthermore, refer to Figure 1 A cooling assembly 6 is installed between the filament outlet 11 and the first guide roller 21 to cool the polyester filament bundle. When the raw material is extruded from the raw material box 12, it is in a gel-like state, unformed, and somewhat sticky. Therefore, after cooling the raw material to form a polyester filament bundle, the bundle is stretched and plasticized by the wire harness guiding mechanism 2, while the tension is adjusted to shape the thickness of the polyester filament bundle. Similarly, a cooling assembly 6 is also installed between the second guide roller 22 and the winding and recovery mechanism 3. This cooling thoroughly shapes the polyester filament bundle, facilitating winding and recovery. The cooling assembly 6 can be an air-cooling device, which typically includes a fan and ventilation ducts. The fan blows cold air through the ventilation ducts onto the polyester filament bundle, carrying away its heat and achieving the cooling purpose. The cooling assembly 6 allows the polyester filament bundle to cool down rapidly after output, improving its physical properties and making it more suitable for subsequent processing and winding.

[0032] Furthermore, the first guide roller 21 and the second guide roller 22 are typically made of metal with polished surfaces to reduce friction with the polyester filaments. The drive unit can be an electric motor, which is connected to the guide rollers via a belt or chain to control the rotational speed of the guide rollers.

[0033] Furthermore, the rotational speed of the second guide roller 22 is greater than that of the first guide roller 21. When the polyester filament is transferred from the first guide roller 21 to the second guide roller 22, the higher rotational speed of the second guide roller 22 generates a certain tension on the polyester filament, thereby increasing the tension of the polyester filament. When different thicknesses of polyester filament are required, this can be achieved by adjusting the speed difference between the first guide roller 21 and the second guide roller 22. The greater the speed difference between the first guide roller 21 and the second guide roller 22, the greater the tension on the polyester filament between the first guide roller 21 and the second guide roller 22, and the finer the polyester filament will be. Conversely, the smaller the speed difference between the first guide roller 21 and the second guide roller 22, the smaller the tension on the polyester filament between the first guide roller 21 and the second guide roller 22, and the thicker the polyester filament will be.

[0034] By changing the direction of the polyester filament bundle twice through the first guide roller 21 and the second guide roller 22, two opposing supporting forces are generated on the polyester filament bundle. Simultaneously, combined with the tension generated when the winding and recovery mechanism 3 winds and recovers the polyester filament bundle, the cooperation of the first guide roller 21 and the second guide roller 22 effectively fixes one end of the polyester filament bundle. This ensures that the polyester filament bundle receives uniform tension during the winding and recovery mechanism 3's recovery, preventing tangling and messy strands during the final winding. It also avoids excessive pre-set tension in the middle of the polyester filament bundle, which could lead to uneven density distribution and reduced strength in sections with high tension, thus failing to meet product parameter requirements.

[0035] Furthermore, an anti-stick coating may also be applied to the surfaces of the first guide roller 21 and the second guide roller 22. The anti-stick coating is a polytetrafluoroethylene layer or a silicone rubber layer. This anti-stick coating can prevent the polyester filaments from sticking to the first guide roller 21 or the second guide roller 22, ensuring smooth conveying.

[0036] Furthermore, refer to Figure 1Bundling slots 4 are provided between the yarn outlet 11 and the first guide roller 21, and between the second guide roller 22 and the winding and take-up mechanism 3. The bundling slot 4 between the yarn outlet 11 and the first guide roller 21 is a groove-shaped structure with a gathering function, used to gather the spacing of the polyester yarn bundles and distribute them evenly on the first guide roller 21 and the second guide roller 22. The bundling slot 4 between the second guide roller 22 and the winding and take-up mechanism 3 is used to prevent the polyester yarn bundles from shifting. The bundling slots 4 can be made of plastic or metal, and their shape is generally trapezoidal or conical, with the larger opening facing the yarn outlet 11 or the winding and take-up mechanism 3, and the smaller opening facing the guide rollers. When the polyester yarn bundles pass through the bundling slots 4, they are gradually gathered, reducing their spacing and distributing them evenly on the guide rollers, ensuring that each strand of polyester yarn bundle is subjected to uniform force during the guiding process.

[0037] Furthermore, refer to Figure 1 and Figure 2 The yarn feeding mechanism 1 and the yarn guide mechanism 2 are located above the winding and take-up mechanism 3. Multiple parallel clamping plates 5 are arranged side-by-side between the yarn guide mechanism 2 and the winding and take-up mechanism 3. These clamping plates facilitate worker standing on them for installation and subsequent maintenance of the upper equipment. Slots 51 are formed between adjacent parallel clamping plates 5, through which the polyester yarn bundles pass to maintain them on the same vertical plane. The parallel clamping plates 5 are typically made of plastic or metal with a smooth surface. The width of the slots 51 is adjusted according to the thickness of the polyester yarn bundles to ensure smooth passage. The parallel clamping plates 5 prevent the polyester yarn bundles from shifting during transmission, ensuring the neatness of the winding.

[0038] Furthermore, guide pulleys are installed in the grooves 51 on the parallel clamping layer 5. These guide pulleys are typically made of plastic or rubber with a smooth surface. The function of the guide pulleys is to reduce friction between the polyester filaments and the parallel clamping layer 5, allowing the polyester filaments to pass through the grooves 51 more smoothly. The guide pulleys can be connected to the parallel clamping layer 5 via shafts and can rotate freely.

[0039] Specifically, refer to Figure 2The winding and recovery mechanism 3 includes a polyester filament winding machine 31 and a polyester filament positioning plate 32, with the positioning plate 32 positioned above the winding machine 31. The polyester filament winding machine 31 is one of the core components of the entire equipment, typically consisting of a motor, a winding shaft, and a transmission device. The motor provides power, which drives the winding shaft to rotate via the transmission device, thus winding the polyester filament bundle. The positioning plate 32 is generally made of metal or plastic and is flat in shape. Positioning holes are provided on the positioning plate 32, through which the polyester filament bundle passes to the winding machine 31. The purpose of the positioning holes is to position the polyester filament bundle, ensuring that it is accurately wound onto the winding shaft.

[0040] Furthermore, refer to Figure 2 Multiple polyester filament winding machines 31 are provided, each corresponding one-to-one with the filament outlet 11. Multiple polyester filament winding machines 31 can simultaneously wind multiple polyester filament bundles, improving production efficiency. The one-to-one correspondence design ensures that each polyester filament bundle has an independent winding path, avoiding mutual interference. The positioning hole diameter on the polyester filament positioning plate 32 is adjustable, achieved through replaceable bushings or adjusting components to accommodate different polyester filament bundle thicknesses. Replaceable bushings are a simple and effective method for adjusting the hole diameter; when winding polyester filament bundles of different thicknesses, only bushings with different inner diameters need to be replaced. The adjusting component can be a mechanical adjustment device, changing the size of the positioning hole via knobs or screws. Finally, the polyester filament bundle is wound onto a polyester coil, removed, and placed on a finished product rack.

[0041] To ensure the quality of the polyester filament products and determine whether adjustments to the operating parameters of various mechanisms in the production equipment are necessary, a quality inspection device is used after the polyester filaments are wound onto the polyester rings. This device includes a mounting frame, a winding machine to be tested, and a pressing roller. The mounting frame is positioned to the left of the winding machine, and the pressing roller is positioned between the mounting frame and the winding machine. The polyester ring to be tested is placed on the mounting frame, and then the filaments of the polyester ring are wound onto the winding machine after passing through the pressing roller. After 100 turns, the mass of the 100 turns of filament on the winding frame is tested to determine whether the polyester filament is qualified. If the mass exceeds the standard value, it indicates that some parts of the polyester filament are too thick; conversely, if the mass is below the standard value, it indicates that some parts of the polyester filament are too thin, requiring adjustment of the speed difference between the first guide roller 21 and the second guide roller 22. The pressing roller provides a certain tension to ensure that the filaments do not become loose or tangled during the measurement and winding process.

[0042] The implementation principle of this embodiment is as follows: The polyester filament production equipment of this embodiment stably outputs polyester filament bundles through the filament output mechanism 1, and the cooling component 6 cools the output filament bundles to improve their physical properties. The filament bundle guiding mechanism 2 adjusts the tension of the polyester filament bundles through the speed difference between the first guide roller 21 and the second guide roller 22, and the bundling slot 4 ensures that the filament bundles are evenly distributed. The winding and recovery mechanism 3 neatly winds the adjusted filament bundles through the polyester filament winding machine 31 and the polyester filament positioning plate 32. The design of the entire equipment and the coordinated work of each component precisely control the tension of the polyester filament bundles, avoiding tangling and messy filaments, improving production efficiency and product quality, and representing a significant improvement over the prior art.

[0043] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A polyester yarn production apparatus characterized by comprising: It comprises a yarn outlet mechanism (1), a bundle guiding mechanism (2) and a winding recovery mechanism (3). The yarn outlet mechanism (1) comprises a raw material box (12) and a yarn outlet (11) arranged on the side wall of the raw material box (12) for outputting polyester tows. The bundle guiding mechanism (2) comprises a first guiding roller (21) and a second guiding roller (22), the first guiding roller (21) and the second guiding roller (22) are respectively adjusted in speed by independent driving devices, so that the tension of the polyester tows is adjusted by the speed difference; after the polyester tows are output from the yarn outlet (11), the first guiding roller (21) is first passed to change the direction, and then the second guiding roller (22) is passed for the second time to change the direction, and finally enters the winding recovery mechanism (3). The winding recovery mechanism (3) is used for winding and recovering the polyester tows.

2. The polyester yarn production apparatus according to claim 1, wherein The yarn outlet (11) is provided with a plurality of yarn outlets and is arranged on the same horizontal line.

3. The polyester yarn production apparatus according to claim 2, wherein The yarn outlet (11) and the first guiding roller (21) and the second guiding roller (22) and the winding recovery mechanism (3) are provided with a bundle collecting notch (4), the bundle collecting notch (4) is a slot structure with a folding function, which is used for folding the spacing of the polyester tows and uniformly distributing the polyester tows on the first guiding roller (21) and the second guiding roller (22).

4. The polyester yarn production apparatus according to claim 2, wherein The winding recovery mechanism (3) comprises a polyester yarn winding machine (31) and a polyester yarn positioning plate (32), and the polyester yarn positioning plate (32) is arranged above the polyester yarn winding machine (31).

5. The polyester yarn production apparatus according to claim 4, wherein The polyester yarn positioning plate (32) is provided with a positioning hole, and the polyester tows pass through the positioning hole to reach the polyester yarn winding machine (31).

6. The polyester yarn production apparatus according to claim 5, wherein The polyester yarn winding machine (31) is provided with a plurality of polyester yarn winding machines corresponding to the yarn outlets (11); the aperture of the positioning hole on the polyester yarn positioning plate (32) is adjustable, which is realized by replaceable bushings or adjusting assemblies to adapt to different thicknesses of polyester tows.

7. The polyester yarn production apparatus according to claim 1, wherein The yarn outlet (11) and the first guiding roller (21) are provided with a cooling assembly (6) for cooling the polyester tows.

8. The polyester yarn production apparatus according to claim 1, wherein The speed of the second guiding roller (22) is greater than that of the first guiding roller (21).

9. The polyester yarn production apparatus according to claim 1, wherein The yarn outlet mechanism (1) and the bundle guiding mechanism (2) are located above the winding recovery mechanism (3), a plurality of parallel clamping plate layers (5) are arranged between the bundle guiding mechanism (2) and the winding recovery mechanism (3), a fine groove (51) is formed between adjacent parallel clamping plate layers (5), and the polyester tows pass through the fine groove (51) to keep the polyester tows on the same vertical plane.

10. The polyester yarn production apparatus according to claim 9, wherein A guiding pulley is arranged in the fine groove (51) on the parallel clamping plate layer (5) to reduce the friction between the polyester tows and the parallel clamping plate layer (5).

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