A yarn guide for a steam draw frame

Abstract

The utility model discloses a kind of yarn leading device of steam drafting machine, comprising: metal wire rope, can be worn into steam drafting pipe, and at least one end is equipped with connecting component;Flexible fiber rope, detachably with the connecting component of metal wire rope one end connection;The end of the flexible fiber rope is set adjustable thimble structure, the thimble structure is fixed with filament bundle end, guide filament bundle enters steam drafting pipe.The yarn leading device of the utility model can improve the efficiency and success rate of yarn leading, avoid the problem of breaking and blocking, and also avoid damage to the inside of steam drafting pipe, and is convenient, safe and reliable to operate.

Description

Technical Field

[0001] This utility model belongs to the field of carbon fiber production, specifically, it relates to a wire drawing device for a steam drawing machine. Background Technology

[0002] Carbon fiber, known as the "king of new materials," is an inorganic fiber with a carbon backbone structure containing over 90% carbon, formed by the pyrolysis and carbonization of organic fibers such as polyacrylonitrile (PAN) under high-temperature conditions. Carbon fiber possesses outstanding mechanical properties and chemical stability; its density is one-quarter that of steel, and its specific strength is 16 times greater. It boasts the highest specific strength and specific modulus among currently mass-produced high-performance fibers. Furthermore, it exhibits a series of superior properties that are irreplaceable by other materials, including electrical conductivity, thermal conductivity, corrosion resistance, fatigue resistance, high-temperature resistance, and a low coefficient of thermal expansion.

[0003] The production steps of PAN-based carbon fiber generally include polymerization, spinning, and oxidation carbonization. High-quality polyacrylonitrile precursor fiber is the foundation for preparing high-performance polyacrylonitrile-based carbon fiber. However, the polyacrylonitrile precursor fiber after hot water drawing still cannot meet the requirements for fine denier fibers and needs further steam drawing treatment. The steam drawing machine uses saturated steam as the drawing medium. Under high temperature and pressure, individual water molecules penetrate into the fiber. The presence of water molecules increases the intermolecular distance, reduces intermolecular forces, and facilitates the movement of structural units such as chain segments. This allows for relative sliding of macromolecular chains and alignment along the fiber axis, thereby producing finer denier polyacrylonitrile precursor fiber with high orientation and high strength.

[0004] The fiber bundle undergoes high-ratio stretching through direct contact with saturated steam within the steam drawing equipment, resulting in significant improvements in its physical properties. The quality and stability of this process state have a substantial impact on product quality. Upon entering the steam drawing process, the fiber bundle must pass through a curved steam drawing tube (drawing channel) with an inner diameter of 5.5 mm and a length of 5.7 m. Because the fiber bundle is flexible, a fiber guiding device is required to pass it through the curved steam drawing tube.

[0005] In the prior art, the wire drawing device is a thin steel wire with a smooth surface treatment. For example, Chinese patent application CN119433734A discloses an online wire-carrying device for a carbon fiber steam drawing machine, which includes a movable self-priming gun, an anti-static wire guide rope, a rubber guide wheel, and an online tension meter. The anti-static wire guide rope is used to guide the wire online through the steam channel when the carbon fiber steam drawing machine breaks. The movable self-priming gun is used to extract the anti-static wire guide rope from the other end of the steam channel when the carbon fiber steam drawing machine breaks. The rubber guide wheel includes a first rubber guide wheel and a second rubber guide wheel arranged vertically, used to discharge the heat from the overheated carbon fiber bundle produced by the carbon fiber steam drawing machine. The online tension meter and the rubber guide wheel are connected to each other to monitor the state of the carbon fiber bundle passing through the first and second rubber guide wheels.

[0006] However, the existing wire drawing technology has the following problems: (1) When using ordinary fine steel wire for wire drawing, the steel wire is easy to bend and get stuck in the groove inside the drawing tube, resulting in poor passability; (2) The steel wire and the wire bundle are not firmly tied, and it is easy to break during the wire drawing process, resulting in a low success rate (only 30%-42.5%); (3) The steel wire shakes or droops during the wire drawing process, which can easily damage the wire bundles of adjacent spindles and affect the full roll rate; (4) The steel wire is large in volume and long in length, and requires a large space during operation. In the limited space of the production workshop, there is a large safety risk for the operators.

[0007] Therefore, there is an urgent need for a wire drawing device that can improve wire drawing efficiency, reduce wire bundle damage, and is compatible with curved diameter steam drawing tubes.

[0008] In view of this, this utility model is proposed. Utility Model Content

[0009] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a wire drawing device for a steam drawing machine, which can not only improve the efficiency and success rate of wire drawing, but also avoid damage to the inside of the steam drawing tube, and is easy to operate.

[0010] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0011] This utility model provides a wire drawing device for a steam drawing machine, comprising:

[0012] The metal wire rope can be threaded into the steam drawing tube, and at least one end is provided with a connecting component;

[0013] A flexible fiber rope that can be detachably connected to a connecting component at one end of a metal wire rope;

[0014] One end of the flexible fiber rope is provided with an adjustable collar structure, which is fixed to the end of the fiber bundle and guides the fiber bundle into the steam drawing tube.

[0015] In a further embodiment, the collar structure is formed by knotting the flexible fiber rope itself, including a fixed end and a movable end. The collar structure is tightened by pulling the movable end and fixed to the end of the fiber bundle.

[0016] In a further embodiment, a connecting component is provided at one end of the metal wire rope that passes through the steam drawing tube, and is detachably connected to the flexible fiber rope; the maximum diameter of the connecting component is less than or equal to the diameter of the metal wire rope.

[0017] In a further embodiment, the connecting component is a brush structure, a conical hook structure, an elastic clamp structure, or a perforated structure.

[0018] In a further embodiment, a flexible protective cap is provided at the very front end of the end through which the metal wire rope passes into the steam drawing tube.

[0019] In a further embodiment, the pull-out end of the metal wire rope is provided with a ring structure, the maximum diameter of which is greater than the inner diameter of the steam drawing tube.

[0020] In a further embodiment, the surface of the metal wire rope is treated with a surface finish, resulting in a smooth surface.

[0021] Further solutions include flexible fiber rope fixing mechanisms, which are respectively installed at the inlet and outlet of the steam drawing tube.

[0022] In a further embodiment, the flexible fiber rope fixing mechanism is a fixing rod, and after the flexible fiber rope is inserted into the steam drawing pipe, both ends are fixed to the fixing rod.

[0023] In a further embodiment, the inner diameter of the steam drawing tube is 4-6 mm, the diameter of the metal wire rope is 2.5-3.5 mm, and the diameter of the flexible fiber rope is 1.5-2.5 mm.

[0024] In a further embodiment, the metal wire rope is a steel wire rope, and the flexible fiber rope is a cotton thread rope.

[0025] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0026] 1. In the existing technology, metal wire ropes are used to directly pull the wire bundle. However, because the surface of the wire bundle is smooth, it is not easy to securely hook the end of the metal wire rope. During the wire pulling process, the wire bundle is prone to breakage and blockage in the steam drawing tube.

[0027] The wire drawing device of the steam drawing machine provided by this utility model uses a metal wire rope in conjunction with a flexible fiber rope. First, the metal wire rope pulls the flexible fiber rope into the steam drawing tube, and then the flexible fiber rope is fixed to the wire bundle and guided into the steam drawing tube. In this way, the flexible fiber rope and the wire bundle can be firmly fixed, the wire bundle throughput reaches 100%, avoiding problems such as breakage and blockage, and improving work efficiency.

[0028] 2. This invention also improves the metal wire rope in the wire drawing device. The metal wire rope not only has a smooth surface, but also features a flexible protective cap at its insertion end. The connecting component that connects to the flexible fiber rope also serves both guiding and connecting functions, ensuring smooth insertion into the tube while reliably securing the flexible fiber rope. This prevents damage to the interior of the steam drawing tube.

[0029] 3. When using only ordinary steel wire, the wire sways at the tail end of the steam drawing process, easily damaging the wire bundles in adjacent spindles and affecting the full-bore rate of the raw wire. Furthermore, spindles are generally arranged in upper and lower layers; when drawing wire from the upper spindle, the wire easily droops to the lower wire bundle, causing damage. The wire drawing device of the steam drawing machine provided by this utility model uses flexible fiber ropes to guide the wire bundles, which will not affect the wire bundles of adjacent spindles; moreover, it can perform single-spindle operation without affecting the production of other spindles.

[0030] 4. The wire-drawing device of this utility model is easy to operate, highly applicable, does not require a high-pressure air source for wire drawing, and can be completed by a single person, saving time (more than 10 minutes per drawing) and is highly safe.

[0031] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0032] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0033] Figure 1 This is a schematic diagram of the wire-drawing device of this utility model;

[0034] Figure 2 This is a schematic diagram of the metal wire rope of this utility model;

[0035] Figure 3 This is a schematic diagram of the structure of a flexible fiber rope in a steam drawing tube;

[0036] In the diagram: 1-steel wire, 2-brush structure, 3-ring structure, 4-flexible protective cap, 5-cotton rope, 6-ring structure, 7-steam stretching pipe, 8-fixing rod.

[0037] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0039] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] A steam drafting machine is a key piece of equipment in fiber production used for stretching nascent fibers. It achieves high-ratio fiber stretching through a saturated steam environment, thereby improving the fiber's mechanical properties. Its core structure includes: a main frame and support system, a steam drafting box, a fiber conveying and drafting mechanism, a fiber drawing auxiliary system, a control system, and auxiliary equipment.

[0042] The main frame and support system, including the frame and guide rail system, provides overall support for the equipment and facilitates the installation and adjustment of the positions of various functional components. The steam drafting chamber is the core working area, comprising: the chamber structure, forming an enclosed space to maintain the steam environment; steam drafting pipes (or simply drafting pipes), installed inside the chamber, serving as the channel for fiber drafting and guiding the fibers along a predetermined path; a steam inlet and distribution system, with steam inlets at both ends or sides of the chamber, working in conjunction with internal steam nozzles and baffles to ensure uniform distribution of saturated steam within the chamber, guaranteeing even heating of the fibers; and an exhaust and pressure control system for regulating the steam pressure within the chamber. The fiber conveying and drafting mechanism includes feed rollers, traction roller sets, guide rollers, etc., used to convey and guide fibers and change their orientation. The fiber drawing auxiliary system includes fiber drawing devices, such as steel wire, used to introduce the fiber bundle into the steam drafting pipe during start-up or batch change. Auxiliary equipment includes a steam generator, condensate drainage system, etc.

[0043] If compressed air is used, negative pressure is used to guide the yarn into the steam drawing tube. The compressed air pressure must reach more than 600 kPa. Otherwise, the yarn bundle will not pass through the steam drawing tube and will cause blockage. The blockage rate can reach more than 60%.

[0044] If steel wire is used to directly pull the wire bundle, the smooth surface of the wire bundle makes it difficult to securely hook and tie it to the end of the steel wire. Furthermore, the wire bundle arrives quickly, requiring rapid threading. The interior of the steam drawing tube is curved and uneven, making it prone to jamming, breaking, or clogging during the drawing process. Additionally, the steel wire sways at the tail end of the steam drawing process, easily damaging the wire bundles in adjacent spindles and affecting the full-bore rate. Moreover, since spindles are typically arranged in layers, if wire is drawn from the upper spindle, the wire can easily droop to the lower wire bundle, causing damage.

[0045] refer to Figures 1-2 As shown, this utility model provides a wire drawing device for a steam drawing machine, comprising:

[0046] The metal wire rope can be threaded into the steam drawing tube 7, and at least one end is provided with a connecting component;

[0047] A flexible fiber rope that can be detachably connected to a connecting component at one end of a metal wire rope;

[0048] One end of the flexible fiber rope is provided with an adjustable collar structure 6, which is fixed to the end of the fiber bundle and guides the fiber bundle into the steam drawing tube 7.

[0049] This invention relates to a wire drawing device that includes both a metal wire rope and a flexible fiber rope. The metal wire rope, in conjunction with the flexible fiber rope, first guides the flexible fiber rope into the steam drawing tube 7. Then, the flexible fiber rope is fixed to the wire bundle and guided into the steam drawing tube 7. This securely fixes the flexible fiber rope to the wire bundle, achieving a 100% wire bundle throughput and preventing breakage or blockage. Furthermore, it allows for single-spindle operation without affecting adjacent or lower spindles. Additionally, the flexible fiber rope occupies less space, minimizing disruption to other spindles and reducing safety risks for operators.

[0050] The metal wire rope described in this invention possesses both a certain degree of hardness and a certain degree of flexibility, and can be made of steel wire, stainless steel wire, alloy wire, etc. The flexible fiber rope can be made of natural fiber, synthetic fiber, composite fiber, etc.

[0051] Specifically, in the following embodiments of this utility model, the metal wire rope is made of steel wire 1, and the flexible fiber rope is made of cotton thread rope 5.

[0052] In one embodiment, the loop structure 6 of the cotton rope 5 is formed by knotting the cotton rope 5 itself, including a fixed end and a movable end. By pulling the movable end, the loop structure 6 is tightened and fixed to the end of the yarn bundle.

[0053] In this way, the cotton thread rope 5 can flexibly and quickly lock the silk bundle in a slipknot manner. The silk bundle and the cotton thread rope 5 have a good fixing effect, which can realize rapid silk drawing and avoid silk breakage and blockage.

[0054] In one embodiment, a connecting component is provided at one end of the steel wire 1 that passes through the steam drawing tube 7, and it is detachably connected to the cotton rope 5; the maximum diameter of the connecting component is less than or equal to the diameter of the steel wire 1, so as to ensure smooth passage through the tube and reliable fixation of the rope.

[0055] In this invention, the connecting component is a brush structure 2, a conical hook structure, an elastic clamp structure, or a perforated structure. The specific configurations of each connecting component are as follows:

[0056] Option 1: As Figure 2 As shown, brush structure 2

[0057] Specifically, the bristles are set at the end of the steel wire 1, in the same axial direction as the steel wire 1, and are inclined upwards along the axial direction of the steel wire 1.

[0058] Connection method: The end of the cotton rope 5 is knotted to make a loop, which is then placed on the brush structure 2. Due to the presence of the brush bristles, the cotton rope 5 is fixed to the brush and is not easy to fall off.

[0059] The brush structure 2 has low resistance in the drawing tube, and the soft bristles can protect the inner wall of the drawing tube; it can also easily fix the cotton rope 5, and the structure is simple and reliable.

[0060] Option 2: Conical hook structure (no illustration)

[0061] Specifically, the front end is made into a 60° cone (with a radius of 0.3mm at the tip), and the tail end of the cone is integrally formed with a closed hook with a diameter of about 2mm (opening width of 1mm). The inside of the hook is treated with barbs for anti-slip.

[0062] Connection method: After the cotton rope 5 is passed through the hook, it is knotted. The barbs can prevent the knot from slipping off.

[0063] When using a tapered hook structure, the tapered guide reduces the resistance of threading through the tube. The hook structure is simple and reliable, suitable for cotton ropes or nylon ropes with a diameter of about 2mm, and the overall diameter is compatible with the inner diameter of the drawing tube.

[0064] Option 3: Flexible clamp structure (no illustration)

[0065] The specific structure is as follows: the front end is a 45° conical guide part, and the rear part is equipped with 3 elastic grippers (maximum diameter of 3.5mm when open and 2mm when closed). The inner side of the grippers is embedded with silicone anti-slip pads, and the tail of the grippers is reset by spring.

[0066] Connection method: Pinch the clamp to insert the cotton thread 5, and release it to automatically clamp the cotton thread 5. The silicone pad enhances the grip.

[0067] When using the elastic clamp structure, there is no need to tie knots, and the cotton thread 5 can be quickly loaded and unloaded; the elastic claws naturally retract when threading the tube without increasing the outer diameter, which is beneficial for frequent replacement of the cotton thread 5.

[0068] Option 4: Perforated structure with ball head (no illustration)

[0069] Specific structure: The front end is a hemispherical ball head with a diameter of 3mm (surface polished to Ra0.4μm), and an axial through hole (hole diameter 1.5mm) is set 2mm behind the ball head. The inner wall of the hole is knurled.

[0070] Connection method: After the cotton rope 5 passes through the through hole, it is folded back and knotted with itself. The knurling can increase friction and prevent loosening.

[0071] When using a perforated structure with a ball head, the ball head has no sharp edges, which can protect the inner wall of the drawing tube; the through hole connection has high strength and can withstand large tensile forces.

[0072] As one embodiment, a flexible protective cap 4 is provided at the foremost end of the end of the steel wire 1 that is inserted into the steam drawing pipe 7.

[0073] The flexible protective cap 4 can be formed at the very tip of the steel wire 1 using any form of flexible material, such as coating, fixing, or sleeve. When the steel wire 1 is inserted into the steam drawing tube 7, the flexible protective cap 4 at the very tip can prevent damage to the inside of the steam drawing tube 7, thus protecting the equipment.

[0074] In one embodiment, the pull-out end of the steel wire 1 is provided with a ring structure 3, the maximum diameter of the ring structure 3 being larger than the inner diameter of the steam drawing pipe 7.

[0075] The operator inserts one end of the steel wire 1 through the inlet of the steam drawing pipe 7 and exits through the outlet. After looping the cotton rope 5 onto the brush structure 2 at the end of the steel wire 1, the operator can hold the ring structure 3 and pull back to guide the cotton rope 5 into the steam drawing pipe. After the cotton rope 5 exits through the inlet, it awaits the guidance of the filament bundle. This ring structure not only facilitates operation but also serves as a limit to prevent it from completely entering the drawing pipe and becoming uncontrollable.

[0076] In one embodiment, the surface of the steel wire 1 is treated with a surface finish, resulting in a smooth surface with a smoothness not exceeding Ra0.8. This reduces friction with the interior of the steam drawing tube 7, protecting the equipment.

[0077] As one implementation, a cotton thread rope 5 fixing mechanism is also included, which is respectively installed at the inlet and outlet of the steam drawing tube 7.

[0078] like Figure 3 As shown, the cotton thread rope 5 is fixed by a fixing rod 8. After the cotton thread rope 5 is inserted into the steam drawing tube 7, both ends are fixed to the fixing rod 8. In this way, the cotton thread rope 5 can be guided into the steam drawing tube 7 in advance and fixed to prevent displacement or falling off, thus preparing the guide bundle in advance and improving the drawing efficiency.

[0079] In one embodiment, the inner diameter of the steam drawing tube 7 is 4-6 mm, the diameter of the steel wire 1 is 2.5-3.5 mm, and the diameter of the rope is 1.5-2.5 mm. The lengths of both the steel wire 1 and the rope are greater than the length of the steam drawing tube 7.

[0080] In this utility model, the steel wire 1 is steel wire 1 with a diameter of 2.5-3.5mm. If the steel wire 1 is too thin, it will be too soft and will not be easy to pass through the drawing tube, and it will be easy to get stuck. If the steel wire 1 is too thick, it will also be unable to pass through the drawing tube, and it will also easily damage the inner wall of the drawing tube.

[0081] The following describes the usage process of this utility model, specifically the "locking and pulling" wire-drawing operation method:

[0082] (1) Insert the steel wire 1 of the wire drawing device into the inlet end of the steam drawing pipe 7 until it exits from the outlet end. Utilize the high smoothness and rigidity of the steel wire 1 to avoid getting stuck in the curved groove.

[0083] (2) Tie one end of the cotton rope 5 to the brush structure 2 at the end of the steel wire 1, pull the end of the steel wire 1 with the ring structure, pull the steel wire 1 back, and bring the cotton rope 5 from the outlet end into the drawing tube. Then fix both ends of the cotton rope 5 to the fixing rods 8 at both ends of the drawing tube.

[0084] (3) When the filament bundle reaches the inlet of the drawing tube, the cotton rope 5 is locked in a slip loop and the operator at the outlet of the drawing tube pulls the cotton rope 5.

[0085] (4) After the filament bundle is pulled out from the outlet of the drawing tube, the steam heating is turned on. After the filament bundle is fully spread out at the inlet and the temperature reaches the standard, it is carried through the s-807 roller and then collected into a filament tube by the take-up machine.

[0086] By utilizing the "locking and folding" wire-drawing operation method of this utility model, the blockage rate of the steam traction pipe is reduced to about 3%, saving 10 minutes of wire-drawing time and greatly improving work efficiency.

[0087] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A wire drawing device for a steam drawing machine, characterized in that, include: The metal wire rope can be threaded into the steam drawing tube, and at least one end is provided with a connecting component; A flexible fiber rope that can be detachably connected to a connecting component at one end of a metal wire rope; One end of the flexible fiber rope is provided with an adjustable collar structure, which is fixed to the fiber bundle and guides the fiber bundle into the steam drawing tube.

2. The wire drawing device of the steam drawing machine according to claim 1, characterized in that, The aforementioned loop structure is formed by knotting flexible fiber rope itself, including a fixed end and a movable end. By pulling the movable end, the loop structure is tightened and fixed to the filament bundle.

3. The wire drawing device of the steam drawing machine according to claim 1, characterized in that, A connecting component is provided at one end of the metal wire rope that passes through the steam drawing tube, and it is detachably connected to the flexible fiber rope; the maximum diameter of the connecting component is less than or equal to the diameter of the metal wire rope.

4. The wire drawing device of the steam drawing machine according to claim 3, characterized in that, The connecting component is a brush structure, a conical hook structure, an elastic clamp structure, or a perforated structure.

5. The wire drawing device of the steam drawing machine according to claim 1, characterized in that, The metal wire rope is also equipped with a flexible protective cap at the very front end of the end through which it passes into the steam drawing tube.

6. The wire drawing device of the steam drawing machine according to any one of claims 1-5, characterized in that, The pull-out end of the metal wire rope is provided with a ring structure, and the maximum diameter of the ring structure is greater than the inner diameter of the steam drawing tube.

7. The wire drawing device of the steam drawing machine according to any one of claims 1-5, characterized in that, The surface of the metal wire rope has been smoothed through a finishing process.

8. The wire drawing device of the steam drawing machine according to any one of claims 1-5, characterized in that, It also includes a flexible fiber rope fixing mechanism, which is installed at the inlet and outlet of the steam drawing tube, respectively.

9. The wire drawing device of the steam drawing machine according to claim 8, characterized in that, The flexible fiber rope fixing mechanism is a fixing rod. After the flexible fiber rope is inserted into the steam drawing pipe, both ends are fixed on the fixing rod.

10. The wire drawing device of the steam drawing machine according to any one of claims 1-5, characterized in that, The inner diameter of the steam drawing tube is 4-6 mm, the diameter of the metal wire rope is 2.5-3.5 mm, and the diameter of the flexible fiber rope is 1.5-2.5 mm.

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