Steam drawing device for artificial silk

Abstract

The present application relates to a kind of steam drafting device for artificial silk, belong to artificial silk technical field, for solving the instability of drawing environment in the process of artificial silk steam drawing, uneven mixing of atomized pure water and high-temperature steam, one of the problems of low efficiency of installation and disassembly of preheating section and main drawing section, uneven initial distribution of atomized pure water from the inlet of water mist pipe into steam pipe, sleeve and sleeve connecting rod fit not firm.The present application includes preheating section and main drawing section, the preheating section and the main drawing section are all provided with air supply section.Steam flows through the inlet of the water mist pipe of the present application and impacts the guide fan blade of first stirring fan, thereby realizing the immediate disturbance of atomized pure water, dispersing atomized pure water in steam flow, the rotation direction of second stirring fan is opposite to that of first stirring fan, forming counter-current disturbance flow field, further strengthening the turbulent mixing effect of steam and atomized pure water.

Description

Technical Field

[0001] This invention relates to the field of rayon technology, and more particularly to a steam drawing device for rayon. Background Technology

[0002] In the drawing section of rayon precursor production, the fiber is stretched to a high degree under high temperature and high pressure steam environment, which makes the molecular chains highly oriented and improves the strength and modulus of the precursor.

[0003] In the steam drawing process of rayon, atomized pure water is added to and mixed with high-temperature steam to increase the ambient temperature and humidity during rayon drawing. Uneven mixing of the high-temperature steam and atomized pure water severely disrupts the stability of the drawing environment, causing multiple adverse effects on the drawing effect and the quality of the raw yarn. Uneven mixing directly leads to disordered temperature and pressure fields within the drawing chamber, resulting in localized overheating, localized cooling, or humid areas. This causes significant differences in the degree of plasticization of the filament bundles, uneven stress during drawing, and problems such as monofilament breakage and increased fuzz, seriously affecting continuous production efficiency. Summary of the Invention

[0004] Based on the above analysis, the present invention aims to provide a steam drawing device for rayon, which solves one of the problems in the existing rayon steam drawing process: uneven mixing of atomized pure water and high-temperature steam can disrupt the stability of the drawing environment; the preheating section and the main drawing section are connected by multiple bolts, resulting in low installation and disassembly efficiency; atomized pure water enters the side of the steam pipe from the inlet of the water mist pipe, resulting in uneven initial distribution of atomized pure water in the steam flow; and the sleeve and sleeve rotating rod are not firmly attached, which can easily lead to radial and axial movement of the raw yarn roll, thereby causing tension fluctuations and trajectory deviations of the rayon bundle.

[0005] The objective of this invention is mainly achieved through the following technical solutions: A steam drawing device for rayon includes a preheating section and a main drawing section. Both the preheating section and the main drawing section are equipped with air supply sections. The two sets of air supply sections are used to supply a mixture of high-temperature steam and atomized pure water to the preheating section or the main drawing section, respectively.

[0006] Furthermore, the preheating section includes a preheating pipe and a preheating pipe flange, wherein the preheating pipe flange is disposed at the end of the preheating pipe.

[0007] Furthermore, the main drawing section includes a drawing tube and a drawing tube flange, wherein the drawing tube flange is disposed at the end of the drawing tube.

[0008] Furthermore, both the preheating tube flange and the drawing tube flange are tapered structures.

[0009] Furthermore, it also includes a connector for quickly connecting the preheating section and the main drawing section.

[0010] Furthermore, the connector includes a first half-ring and a second half-ring, which can form an annular clamp when they are engaged.

[0011] Furthermore, the connector also includes an interconnecting element, wherein one end of the first half-ring and the second half-ring are respectively rotatably connected to the pins of the interconnecting element.

[0012] Furthermore, the connector also includes fasteners, which can lock the other ends of the first half-ring and the second half-ring together.

[0013] Furthermore, the connector also includes a sealing ring disposed between the preheating tube flange and the drawing tube flange.

[0014] Furthermore, it also includes a raw material supply section, which is used to place the raw silk rolls.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: (1) The first stirring fan of the air supply section of the present invention is set at the inlet of the water mist pipe; when the steam flows through the inlet of the water mist pipe, it impacts the guide fan blade of the first stirring fan and drives the first stirring fan to rotate, thereby realizing the instantaneous disturbance of the atomized pure water and dispersing the atomized pure water in the steam flow. The angle of the guide fan blade of the second stirring fan is opposite to that of the guide fan blade of the first stirring fan, and the rotation direction of the second stirring fan is opposite to that of the first stirring fan, forming a reverse disturbance flow field, further enhancing the turbulent mixing effect of steam and atomized pure water. (2) The preheating tube flange and the drawing tube flange of the present invention have the same structure, both of which are conical structures; after the first half ring and the second half ring are engaged, they can form an annular clamp. The inner wall of the annular clamp is provided with a wedge-shaped groove that matches the conical surface of the preheating tube flange and the drawing tube flange. When the fastener is locked, the first half ring and the second half ring can squeeze the preheating tube flange and the drawing tube flange towards each other, thereby quickly connecting the preheating section and the main drawing section. Conversely, they can be quickly disassembled, improving assembly and disassembly efficiency. (3) The atomized pure water input by the water mist pipe of the present invention first enters the circulation chamber of the casing and forms a circumferential flow in the circulation chamber. Each input hole is connected to the circulation chamber. The atomized pure water is injected into the steam pipe through multiple circumferentially distributed input holes, thereby adding steam flow in multiple directions around the steam flow, increasing the initial contact area and distribution uniformity between the atomized pure water and the steam. (4) The central axis of the water mist pipe of the present invention is perpendicular to the central axis of the steam pipe but does not intersect, forming an eccentric structure; when the atomized pure water is injected into the casing through the water mist pipe, the atomized pure water can blow the slip ring blades and drive the slip ring to rotate around the outer wall of the steam pipe. The rotating slip ring causes the atomized pure water in the circulation chamber to form a circumferential pressure distribution, thereby balancing the flow difference of each input hole, improving the uniformity of the flow of each input hole, and further increasing the uniformity of the initial contact between the atomized pure water and the steam. (5) When the slip ring of the present invention rotates, it drives the fan shaft to rotate through the meshing of the gear ring and the follower gear, thereby driving the input fan to rotate; the operation of the fan generates a radial airflow that blows into the steam pipe, which quickly pushes the atomized pure water to the center region of the steam flow, thereby breaking the laminar boundary layer of the steam flow and enhancing the turbulent mixing effect. Moreover, it only needs to rely on the fluid kinetic energy in the water mist pipe to drive the slip ring to rotate and the fan to operate simultaneously, without the need for an additional power source, reducing the system energy consumption and complexity; (6) Pushing the pull rod at the end of the second half rod of the present invention can cause the wedge-shaped top block to move along the axial direction of the first half rod. The telescopic block can extend radially out of the outer wall of the first half rod and connect with the inner wall of the sleeve. The telescopic block expands the width of the first half rod and reduces the gap between the first half rod and the sleeve, thereby improving the tightness of the fit between the sleeve and the sleeve rotating rod.

[0016] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the specification or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained from the content specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0017] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0018] Figure 1 This is a schematic diagram of the overall structure of the drawing device; Figure 2 This is a schematic diagram of the overall structure of the raw material supply section; Figure 3 This is a schematic diagram of the longitudinal section of the preheating section and the main drawing section. Figure 4 This is an exploded view of the connector. Figure 5 This is a schematic diagram of the overall structure of the first and second stirring components. Figure 6 This is a schematic diagram of the overall structure of the third stirring component; Figure 7This is a schematic diagram of the cross-sectional structure of the third stirring component; Figure 8 This is a schematic diagram of the internal structure of the third stirring component; Figure 9 This is a schematic diagram of the longitudinal section of the raw material supply section; Figure 10 This is a schematic diagram of the longitudinal section of the positioning mechanism.

[0019] Figure label: 1-Preheating section; 2-Main drawing section; 3-Air supply section; 4-Raw material supply section; 5-Connector; 10-Pyrofilament bundle; 11-Preheating pipe; 12-Preheating pipe flange; 21-Drawing pipe; 22-Drawing pipe flange; 31-Steam pipe; 32-Water mist pipe; 33-First stirring assembly; 34-Second stirring assembly; 35-Third stirring assembly; 41-Mounting frame; 42-Sleeve rotating rod; 43-Wedge-shaped top block; 44-Pull rod; 45-Telescopic groove; 46-Telescopic block; 47-Sliding button; 48-Hook; 49-Button spring; 5 0-Push rod; 51-First half ring; 52-Second half ring; 53-Fastener; 54-Interconnector; 55-Sealing ring; 331-First bracket; 332-First stirring fan; 341-Second bracket; 342-Second stirring fan; 351-Enclosure; 352-Input hole; 353-Rotating slip ring; 354-Slip ring blade; 355-Input fan; 356-Fan shaft; 357-Follower gear; 471-Slider; 472-Connecting part; 473-Toggle rod; 481-Rotating part; 482-Hook part; 483-Toggle rod groove. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0021] Example 1: A specific embodiment of the present invention, such as Figure 1 As shown, a steam drawing device for rayon (hereinafter referred to as the drawing device) is disclosed, including a preheating section 1 and a main drawing section 2. Both the preheating section 1 and the main drawing section 2 are equipped with air supply sections 3. The two sets of air supply sections 3 are used to supply a mixture of high-temperature steam and atomized pure water to the preheating section 1 or the main drawing section 2, respectively.

[0022] Preferably, the drawing device in this embodiment further includes a raw material supply section 4, which is used to place the raw filament roll. The raw filament roll includes a rayon bundle 10 and a sleeve, with the rayon bundle 10 wound around the sleeve. The rayon bundle 10 is continuously drawn out from the sleeve and stretched through the preheating section 1 and the main drawing section 2.

[0023] Preferably, such as Figure 2 As shown, the raw material supply section 4 includes an installation platform 41 and a sleeve rotating rod 42, which is rotatably mounted on the installation platform 41. The sleeve rotating rod 42 includes a first half rod and a second half rod, the first half rod being used to insert into the sleeve, and the second half rod being used to rotatably connect with the installation platform 41.

[0024] To address the problem that existing technologies primarily utilize bolt connections for the connection between the preheating section 1 and the main drawing section 2, resulting in low efficiency in both installation and disassembly, preferably, as follows: Figure 1 As shown, the drawing device in this embodiment also includes a connector 5, which is used to quickly connect the preheating section 1 and the main drawing section 2.

[0025] Specifically, such as Figure 3 and Figure 4 As shown, the preheating section 1 includes a preheating pipe 11 and a preheating pipe flange 12, with the preheating pipe flange 12 located at the end of the preheating pipe 11; the main drawing section 2 includes a drawing pipe 21 and a drawing pipe flange 22, with the drawing pipe flange 22 located at the end of the drawing pipe 21. The preheating pipe flange 12 and the drawing pipe flange 22 have the same structure, both being conical. Connector 5 includes a first half-ring 51, a second half-ring 52, a fastener 53, and an interconnect 54. One end of the first half-ring 51 and the second half-ring 52 are rotatably connected to the pins of the interconnect 54, and the other end of the first half-ring 51 and the second half-ring 52 can be locked by the fastener 53. After the first half-ring 51 and the second half-ring 52 are engaged, they can form an annular clamp. The inner wall of the annular clamp is provided with a wedge-shaped groove that matches the conical surface of the preheating tube flange 12 and the drawing tube flange 22. When the fastener 53 is locked, the first half-ring 51 and the second half-ring 52 can squeeze the preheating tube flange 12 and the drawing tube flange 22 towards each other, thereby quickly connecting the preheating section 1 and the main drawing section 2. Conversely, they can be quickly disassembled, improving assembly and disassembly efficiency.

[0026] Preferably, the fastener 53 includes a bolt and a nut. One end of the bolt is hinged to the second half-ring 52, and the other end of the bolt is threaded into the nut. Tightening the nut will lock the first half-ring 51 and the second half-ring 52 together.

[0027] Preferably, in order to seal the connection gap between the preheating tube flange 12 and the drawing tube flange 22, the connector 5 further includes a sealing ring 55, which is disposed between the preheating tube flange 12 and the drawing tube flange 22, and seals the preheating tube flange 12 and the drawing tube flange 22.

[0028] Preferably, as shown in Figure 5, the air supply section 3 includes a steam pipe 31 and a water mist pipe 32. One end of the two steam pipes 31 is connected to the preheating pipe 11 and the stretching pipe 21 respectively, and the other end is connected to a steam source. The water mist pipe 32 is connected to the steam pipe 31 and injects atomized pure water treated by an atomizer into the steam pipe 31 to form a steam-atomized pure water mixed airflow, which is then transported to the inner cavity of the preheating pipe 11 or the stretching pipe 21 through the steam pipe 31.

[0029] Since the water mist pipe 32 is located on the side wall of the steam pipe 31, there is a problem that the atomized pure water is directly injected into the high-temperature steam flow, resulting in uneven mixing. To address this, the air supply section 3 also includes a first stirring component 33, which is located on the inner wall of the steam pipe 31 and is used to agitate the steam and atomized pure water, so that the two are mixed before entering the preheating pipe 11 or the stretching pipe 21.

[0030] Specifically, the first stirring assembly 33 includes a first support 331 and a first stirring fan 332. One end of the first support 331 is fixed to the inner wall of the steam pipe 31, and the other end of the first support 331 is rotatably connected to the first stirring fan 332. The rotating shaft of the first stirring fan 332 extends along the steam flow direction, and multiple guide fan blades are provided on the rotating shaft. The first stirring fan 332 is located at the inlet where the water mist pipe 32 connects to the steam pipe 31. When the steam flows through the inlet of the water mist pipe 32, it impacts the guide fan blades and drives the first stirring fan 332 to rotate, thereby achieving instantaneous disturbance of the atomized pure water and dispersing the atomized pure water in the steam flow.

[0031] The guide fan blades are at an angle of 15°-30° to the direction of steam flow.

[0032] Preferably, the air supply section 3 further includes a second stirring component 34, which is located downstream of the first stirring component 33. The second stirring component 34 includes a second support 341 and a second stirring fan 342. The angle of the guide fan blades of the second stirring fan 342 is opposite to that of the guide fan blades of the first stirring fan 332, and the rotation direction of the second stirring fan 342 is opposite to that of the first stirring fan 332, forming a reverse disturbance flow field, which further enhances the turbulent mixing effect of steam and atomized pure water.

[0033] Compared with the prior art, in this embodiment, the first stirring fan 332 of the air supply section 3 is located at the inlet of the water mist pipe 32; when the steam flows through the inlet of the water mist pipe 32, it impacts the guide blades of the first stirring fan 332 and drives the first stirring fan 332 to rotate, thereby achieving instantaneous disturbance of the atomized pure water and dispersing the atomized pure water in the steam flow. The angle of the guide blades of the second stirring fan 342 is opposite to that of the guide blades of the first stirring fan 332, and the rotation direction of the second stirring fan 342 is opposite to that of the first stirring fan 332, forming a reverse disturbance flow field, further... The turbulent mixing effect of steam and atomized pure water is enhanced; the preheating tube flange 12 and the drawing tube flange 22 have the same structure, both being conical; the first half-ring 51 and the second half-ring 52 can form an annular clamp after being engaged, and the inner wall of the annular clamp is provided with a wedge-shaped groove that matches the conical surface of the preheating tube flange 12 and the drawing tube flange 22. When the fastener 53 is locked, the first half-ring 51 and the second half-ring 52 can squeeze the preheating tube flange 12 and the drawing tube flange 22 towards each other, thereby quickly connecting the preheating section 1 and the main drawing section 2, and vice versa, they can be quickly disassembled, improving assembly and disassembly efficiency.

[0034] Example 2: In Example 1, the atomized pure water enters the side of the steam pipe 31 from the inlet of the water mist pipe 32. This results in uneven initial distribution of the atomized pure water in the steam flow, hindering thorough mixing between the atomized pure water and the steam. Therefore, as... Figure 6 As shown, this embodiment is an optimization based on embodiment one, by adding a third stirring component 35. The third stirring component 35 is set outside the steam pipe 31, and atomized pure water is injected into the steam pipe 31 from multiple directions. The atomized pure water can be evenly added to the steam flow in the circumferential direction of the steam flow, further improving the mixing uniformity.

[0035] Specifically, such as Figure 7 and Figure 8 As shown, the third stirring assembly 35 includes a casing 351, which is disposed on the outer wall of the steam pipe 31, and the water mist pipe 32 is connected to the casing 351. The casing 351 has an annular hollow structure, and the annular hollow part of the casing 351 is a circulation chamber. The atomized pure water input by the water mist pipe 32 first enters the circulation chamber of the casing 351, forming a circumferential flow within the circulation chamber. The outer wall of the steam pipe 31 is provided with multiple circumferentially distributed atomized pure water input holes 352, each of which is connected to the circulation chamber. The atomized pure water is injected into the steam pipe 31 through the multiple circumferentially distributed input holes 352, thereby adding steam flow in multiple directions around the steam flow, increasing the initial contact area and distribution uniformity between the atomized pure water and the steam.

[0036] Preferably, the first stirring assembly 33 and the second stirring assembly 34 are located downstream of the inlet 352. The steam and atomized pure water are further mixed to enhance uniformity before entering the preheating pipe 11 or the stretching pipe 21.

[0037] The flow rate of atomized pure water is fastest at the input port 352 closest to the inlet of the water mist pipe 32, and slowest at the input port 352 furthest from the inlet of the water mist pipe 32, resulting in differences in flow rates at each input port. Preferably, the third stirring assembly 35 further includes a rotating slip ring 353 and slip ring blades 354. The slip ring 353 is sleeved on the outer wall of the steam pipe 31, and the slip ring blades 354 are evenly distributed circumferentially around the outer periphery of the slip ring 353. The central axis of the water mist pipe 32 is perpendicular to but does not intersect with the central axis of the steam pipe 31, forming an eccentric structure. When atomized pure water is injected into the casing 351 through the water mist pipe 32, the atomized pure water can blow the slip ring blade 354 and drive the slip ring 353 to rotate around the outer wall of the steam pipe 31. The rotating slip ring 353 causes the atomized pure water in the circulation chamber to form a circumferential pressure distribution, thereby balancing the flow difference of each inlet hole 352, improving the uniformity of the flow of each inlet hole 352, and further increasing the uniformity of the initial contact between the atomized pure water and the steam.

[0038] To further address the issue of poor mixing between atomized pure water and steam, the third stirring assembly 35 preferably includes an input fan 355, a fan shaft 356, and a follower gear 357. One end of the fan shaft 356 is rotatably connected to the inner wall of the casing 351, and the other end is fixedly connected to the input fan 355. The input fan 355 is positioned in the input hole 352. The follower gear 357 is fitted onto the fan shaft 356 and meshes with the gear ring on the outer circumference of the slip ring 353. When the slip ring 353 rotates, the meshing of the gear ring with the follower gear 357 drives the fan shaft 356 to rotate, thereby driving the input fan 355 to rotate. The operation of the fan 355 generates a radial airflow that blows into the steam pipe 31, rapidly pushing the atomized pure water towards the central region of the steam flow, thereby breaking the laminar boundary layer of the steam flow and enhancing the turbulent mixing effect. Moreover, the rotation of the slip ring 353 and the operation of the fan 355 can be driven synchronously by the fluid kinetic energy in the water mist pipe 32, without the need for an additional power source, thus reducing system energy consumption and complexity.

[0039] Compared to Embodiment 1, in this embodiment, the atomized pure water input through the water mist pipe 32 first enters the circulation chamber of the casing 351, forming a circumferential flow within the circulation chamber. Each input hole 352 is connected to the circulation chamber. The atomized pure water is injected into the steam pipe 31 through multiple circumferentially distributed input holes 352, thereby adding steam flow in multiple directions around the steam flow, increasing the initial contact area and distribution uniformity between the atomized pure water and the steam. The central axis of the water mist pipe 32 is perpendicular to but does not intersect with the central axis of the steam pipe 31, forming an eccentric structure. When the atomized pure water is injected into the casing 351 through the water mist pipe 32, the atomized pure water can blow the slip ring blades 354 and drive the slip ring blades 354. The slip ring 353 rotates around the outer wall of the steam pipe 31. The rotating slip ring 353 creates a circumferential pressure distribution of the atomized pure water in the circulation chamber, thereby balancing the flow differences of each inlet 352, improving the uniformity of the flow of each inlet 352, and further increasing the uniformity of the initial contact between the atomized pure water and the steam. When the slip ring 353 rotates, it meshes with the follower gear 357 through the gear ring, driving the fan shaft 356 to rotate, which in turn drives the input fan 355 to rotate. The operation of the fan 355 generates a radial airflow that blows into the interior of the steam pipe 31, rapidly pushing the atomized pure water to the central region of the steam flow, thereby breaking the laminar boundary layer of the steam flow and enhancing the turbulent mixing effect. Moreover, only the fluid kinetic energy in the water mist pipe 32 is needed to synchronously drive the rotation of the slip ring 353 and the operation of the fan 355, without the need for an additional power source, reducing system energy consumption and complexity.

[0040] Example 3: When the raw yarn roll is inserted laterally into the sleeve rotating rod 42, there is a problem of the sleeve and the end face of the sleeve rotating rod 42 not fitting firmly, which can easily lead to radial and axial movement of the raw yarn roll, thereby causing tension fluctuations and trajectory deviations in the rayon bundle 10, reducing the strength of the rayon bundle 10, and even causing the rayon bundle 10 to break. Therefore, as Figure 9 As shown, this embodiment further improves the raw material supply section 4 based on embodiment one or embodiment two by adding a self-tightening mechanism, so that the inner sidewall of the sleeve fits into the self-tightening mechanism, thereby increasing the radial and axial stability of the raw yarn roll.

[0041] Specifically, both the first and second halves of the rod are hollow round rods. The self-tightening mechanism includes a wedge-shaped top block 43 and a pull rod 44. The pull rod 44 is disposed within the rod bodies of the first and second halves and is capable of sliding along the rod bodies of the first and second halves. The wedge-shaped top block 43 is disposed on the pull rod 44, and the pull rod 44 is used to push the wedge-shaped top block 43 to move axially along the sleeve rotating rod 42.

[0042] Preferably, the self-tightening mechanism further includes a telescopic groove 45 and a telescopic block 46. The telescopic groove 45 is disposed on the wedge-shaped top block 43 and is arranged along the axis of the pull rod 44. The end of the telescopic groove 45 near the first half-rod is the proximal end, and the end of the telescopic groove 45 near the second half-rod is the distal end. The distance from the distal end to the axis of the pull rod 44 is greater than the distance from the proximal end to the axis of the pull rod 44. The telescopic block 46 is radially inserted into the outer wall of the first half-rod and connected to the telescopic groove 45, and can slide along the telescopic groove 45. Pushing the pull rod 44 at the end of the second half-rod allows the wedge-shaped top block 43 to move axially along the first half-rod. The telescopic block 46 can radially extend out of the outer wall of the first half-rod and connect to the inner wall of the sleeve. The telescopic block 46 expands the width of the first half-rod and reduces the gap between the first half-rod and the sleeve, thereby improving the tightness of the fit between the sleeve and the sleeve rotating rod 42.

[0043] Preferably, multiple telescopic grooves 45 and telescopic blocks 46 are provided and are evenly distributed along the circumference of the wedge-shaped top block 43, so that the center line of the sleeve coincides with the central axis of the first half rod, thereby reducing the radial movement of the original yarn roll.

[0044] There is a problem that the self-tightening mechanism cannot lock automatically, and the telescopic block 46 may retract into the first half of the rod, causing the sleeve to disengage from the sleeve rotating rod 42. To address this, the raw material supply section 4 also includes a positioning mechanism, which is used to lock or unlock the self-tightening mechanism.

[0045] Specifically, such as Figure 9 As shown, the positioning mechanism includes a sliding button 47, a hook 48, and a button spring 49. The sliding button 47 is located at the end of the first half rod and can press and compress the button spring 49 along the axial direction of the first half rod. The hook 48 is hinged to the first half rod through a shaft pin. One end of the button spring 49 is connected to the sliding button 47, and the other end of the button spring 49 is connected to the pull rod 44. The button spring 49 is used to push the pull rod 44 towards the second half rod, so that the wedge-shaped top block 43 moves towards the second half rod, and the telescopic block 46 can be radially retracted into the outer wall of the first half rod and disengage from the sleeve so that the sleeve can be removed from the sleeve rotating rod 42. It is also used to push the sliding button 47 towards the end of the first half rod, so that the sliding button 47 is reset.

[0046] Preferably, such as Figure 10As shown, the sleeve rod 42 also includes a plug, which is threaded to the end of the first half rod. The plug has a through hole to accommodate the sliding button 47. The sliding button 47 includes a slider 471, a connecting part 472, and a lever 473. The lever 473 is fixedly connected to the slider 471 through the connecting part 472. The hook 48 includes a rotating part 481, a hooking part 482, and a lever groove 483. The middle part of the rotating part 481 is hinged to the first half rod through a pin. The hooking part 482 is located at one end of the rotating part 481, and the lever groove 483 is located at the other end of the rotating part 481. The lever 473 is embedded in the lever groove 483 and can slide along the lever groove 483. The self-tightening mechanism also includes positioning grooves. Multiple positioning grooves are provided and are axially located on the pull rod 44. The positioning grooves can engage with the hooking part 482. When the sliding button 47 is pressed towards the second half of the lever, the lever 473 pushes the rotating part 481 to rotate around the pivot pin along the lever groove 483, causing the hook part 482 to disengage from the positioning groove. Under the elastic force of the button spring 49, the pull rod 44 and the wedge-shaped top block 43 move towards the second half of the lever, and the telescopic block 46 retracts, allowing the sleeve to be easily removed. After releasing the sliding button 47, the button spring 49 resets and pushes the sliding button 47 and the lever 473 back. The rotating part 481 rotates in the opposite direction, pushing the pull rod 44 towards the first half of the lever. The positioning groove re-engages with the hook part 482, and the telescopic block 46 extends radially and fits tightly against the inner wall of the sleeve, achieving locking. The positioning mechanism achieves the dual functions of press-to-unlock and automatic reset using only one button spring 49, resulting in a compact structure.

[0047] During the wire feeding process in the raw material supply section 4, as the sleeve rotating rod 42 rotates, the sleeve deforms, and the self-tightening mechanism may still detach from the sleeve. Therefore, preferably, as follows... Figure 2 As shown, the raw material supply section 4 also includes a jacking mechanism, which synchronously drives the self-tightening mechanism when the sleeve rotating rod 42 rotates. The jacking mechanism includes a drive motor (not shown in the figure), a push rod 50, and a push rod seat. Both the drive motor and the push rod 50 are mounted on the push rod seat. One end of the push rod 50 is connected to the output shaft of the drive motor, and the other end can abut against the end of the pull rod 44, thereby converting the rotational motion of the motor into the axial linear motion of the pull rod 44 through the push rod 50. When the sleeve rotating rod 42 rotates, the drive motor starts, and the push rod 50 pushes the pull rod 44, causing the telescopic block 46 to extend further radially and press more firmly against the inner wall of the sleeve. This process does not require consideration of the rotation of the sleeve rotating rod 42 and does not require shutting down the machine. It can continuously enhance the degree to which the telescopic block 46 presses against the inner wall of the sleeve during the production process, reducing the loosening of the sleeve.

[0048] Compared to Embodiment 1 or Embodiment 2, in this embodiment, the end of the second half-rod pushes the pull rod 44, enabling the wedge-shaped top block 43 to move axially along the first half-rod. The telescopic block 46 can extend radially out of the outer wall of the first half-rod and connect with the inner wall of the sleeve. The telescopic block 46 expands the width of the first half-rod and reduces the gap between the first half-rod and the sleeve, thereby improving the tightness of the fit between the sleeve and the sleeve rotating rod 42. When the sliding button 47 is pressed towards the second half-rod, the lever 473 pushes the rotating part 4 along the lever groove 483. Rotating around the pivot pin 81 causes the hook 482 to disengage from the positioning groove. Under the force of the button spring 49, the pull rod 44 and wedge-shaped top block 43 move towards the second half of the rod, causing the telescopic block 46 to retract, allowing the sleeve to be easily removed. After releasing the sliding button 47, the button spring 49 resets, pushing the sliding button 47 and lever 473 back. The rotating part 481 rotates in the opposite direction, pushing the pull rod 44 towards the first half of the rod. The positioning groove re-engages with the hook 482, and the telescopic block 46 extends radially and presses tightly against the inner wall of the sleeve, achieving locking. The positioning mechanism utilizes only one button spring 49 to achieve both press-to-unlock and automatic reset functions, resulting in a compact structure. When the sleeve rotating rod 42 rotates, the drive motor starts, and the push rod 50 rotates accordingly, pushing the pull rod 44 to further extend the telescopic block 46 radially, pressing it more firmly against the inner wall of the sleeve. This process does not require consideration of the rotation of the sleeve rod 42 and does not require shutting down the machine. It can continuously enhance the tightness of the telescopic block 46 against the inner wall of the sleeve during the production process, reducing the loosening of the sleeve.

[0049] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A steam drawing device for rayon, characterized in that, It includes a preheating section (1) and a main drawing section (2). Both the preheating section (1) and the main drawing section (2) are equipped with air supply sections (3). The air supply sections (3) are used to supply a mixture of high-temperature steam and atomized pure water to the preheating section (1) or the main drawing section (2).

2. The steam drawing device for rayon according to claim 1, characterized in that, The preheating section (1) includes a preheating pipe (11) and a preheating pipe flange (12), the preheating pipe flange (12) being disposed at the end of the preheating pipe (11).

3. The steam drawing device for rayon according to claim 2, characterized in that, The main drawing section (2) includes a drawing tube (21) and a drawing tube flange (22), the drawing tube flange (22) being disposed at the end of the drawing tube (21).

4. The steam drawing device for rayon according to claim 3, characterized in that, Both the preheating tube flange (12) and the drawing tube flange (22) are tapered structures.

5. The steam drawing device for rayon according to claim 3, characterized in that, It also includes a connector (5) for connecting the preheating section (1) and the main drawing section (2).

6. The steam drawing device for rayon according to claim 5, characterized in that, The connector (5) includes a first half-ring (51) and a second half-ring (52), which can form a ring clamp after the first half-ring (51) and the second half-ring (52) are engaged.

7. The steam drawing device for rayon according to claim 6, characterized in that, The connector (5) further includes an interconnect (54), one end of the first half-ring (51) and the second half-ring (52) being rotatably connected to the pin of the interconnect (54).

8. The steam drawing device for rayon according to claim 7, characterized in that, The connector (5) also includes a fastener (53) that can lock the other ends of the first half-ring (51) and the second half-ring (52) together.

9. The steam drawing device for rayon according to claim 5, characterized in that, The connector (5) also includes a sealing ring (55), which is disposed between the preheating tube flange (12) and the drawing tube flange (22).

10. The steam drawing device for rayon according to claim 1, characterized in that, It also includes a raw material supply section (4), which is used to place the raw silk rolls.

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