A negative ion yarn spinning process and spinning equipment

Abstract

This invention discloses a negative ion yarn spinning process. During the transformation of the molten stream into nascent fibers, the strength gradually increases while the temperature gradually decreases. By setting up multiple cooling sections, the cooling air velocity in each section gradually increases vertically downwards. This gradual increase in cooling air velocity, based on the increasing strength of the nascent fibers, ensures cooling efficiency and allows the cooling temperature in each section to gradually decrease vertically downwards, resulting in a uniform temperature reduction of the nascent fibers. Ultimately, while ensuring cooling efficiency, this process avoids or reduces filament breakage. Furthermore, the initial use of a lower cooling air velocity prevents excessive fiber movement and adhesion. This invention also discloses a negative ion yarn spinning device that, while ensuring cooling efficiency, also avoids or reduces filament breakage.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and in particular to a negative ion yarn spinning process and spinning equipment. Background Technology

[0002] With scientific progress and economic development, the variety of functional textiles is increasing, and the functional textile industry has rapidly developed into an important sector within the textile industry. Functional textiles refer to textiles that possess one or more of the following functions: antibacterial, antifungal, antistatic, negative ion health benefits, fire resistance, infrared therapy, and magnetic therapy. The production principle of negative ion fiber textiles involves adding negative ion finishing agents during the fiber production process or the finishing stage of the fabric, enabling the textiles to continuously release negative ions, thus providing health benefits to the human body.

[0003] If a negative ion finishing agent is added during the fiber production process, the resulting yarn will be a negative ion yarn. The spinning process of negative ion yarn, as described in Chinese Patent Application Publication No. CN115538002A, published on December 30, 2022, entitled "A Negative Ion Yarn Spinning Process and Spinning Equipment," mainly includes the steps of ingredient preparation, melt spinning, side-blowing cooling, bundling, pre-networking, traction, expansion, cooling, networking, and winding, ultimately yielding the negative ion yarn.

[0004] In the side-blowing cooling step, the filaments (nascent fibers) extruded by the screw extruder are specifically cooled by side-blowing air. However, excessively high air speeds can cause the filaments to sway, making them prone to breakage; while excessively low air speeds will affect the cooling efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a negative ion yarn spinning process that can avoid or reduce filament breakage while ensuring cooling efficiency.

[0006] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a negative ion yarn spinning process, comprising the following steps: (S1) Melt preparation: polyester chips, color masterbatch and negative ion finishing agent are weighed in proportion, and the polyester chips, color masterbatch and negative ion finishing agent are mixed to obtain masterbatch. The mixed masterbatch is fed into a screw extruder for melting, mixing and extrusion, and sent to a metering pump in the spinning box through the screw extruder; (S2) Melt extrusion: the melt is quantitatively extruded from the small hole of the spinneret by the metering pump to form a melt stream; (S3) Cooling and solidification: after the melt stream is output, it is divided into multiple cooling sections from top to bottom along the transport direction of the melt stream. The cooling wind speed of the multiple cooling sections gradually increases in the vertical downward direction, and the cooling temperature of the multiple cooling sections gradually decreases in the vertical downward direction. After cooling and solidification, nascent fibers are formed; (S4) Subsequent processing: the nascent fibers are then oiled, networked and wound into a cylinder to obtain negative ion yarn.

[0007] By adopting the above technical solution, during the process of the melt stream transforming into nascent fibers, its strength gradually increases and its temperature gradually decreases. By setting up multiple cooling sections, the cooling air velocity of each section gradually increases in the vertical downward direction. This gradually increases the cooling air velocity according to the property that the strength of the nascent fibers gradually increases, thereby ensuring cooling efficiency. This allows the cooling temperature of the multiple cooling sections to gradually decrease in the vertical downward direction, resulting in a uniform decrease in the temperature of the nascent fibers. Ultimately, while ensuring cooling efficiency, the occurrence of filament breakage can be avoided or reduced. At the same time, using a lower cooling air velocity at the beginning can prevent excessive shaking of the nascent fibers, which could lead to fiber sticking.

[0008] A further provision of the present invention is that in step (S3) cooling and solidification, a return air trough is arranged at the bottom of the other side of the melt stream away from multiple cooling sections. The cooling airflow after cooling the melt stream is drawn into the return air trough by the first exhaust fan. The return air from the first exhaust fan and the cold air output from the external cold air unit are mixed in proportion and then delivered to multiple cooling sections to control the cooling temperature.

[0009] By adopting the above technical solution, the temperature of the cooling airflow after cooling the melt flow is relatively high (higher than the cooling temperature of the uppermost cooling section). If the cooling airflow is blown directly into the factory area, it will cause the temperature inside the factory to be too high, especially in summer, which will easily lead to heatstroke among workers. In this case, by recycling this part of the cooling airflow, the return air from the first exhaust fan and the cold air output from the cold air unit are mixed in proportion and then delivered to multiple cooling sections to control the cooling temperature, which has the effect of saving energy and eliminates the need to set up multiple cold air units to output cold air at different temperatures. At the same time, the return air trough is arranged at the bottom of the melt stream on the other side away from multiple cooling sections. When air pressure is formed in the return air trough, the air above the return air trough will flow towards the return air trough, so that the cooling airflow output from multiple cooling sections tends to flow downward towards the return air trough. At this time, the cooling airflow can also serve as the traction force for the melt stream to move downward.

[0010] A further feature of the present invention is that in the cooling and curing step (S3), the cooling airflow of the cooling section passes through multiple porous plates, honeycomb plates, and filter components in sequence before being output.

[0011] By adopting the above technical solutions, the perforated plate can utilize the throttling effect of the small holes to form a certain airflow resistance, so that the cooling airflow is dispersed along the plate surface. The cooling airflow can gradually and evenly diffuse after passing through multiple perforated plates. The honeycomb plate can organize the irregular airflow in a turbulent state into a regular airflow that is blown out horizontally in a laminar state. The function of the filter component is to further improve the uniformity of the cooling airflow and filter the cooling airflow, so as to achieve uniform blowing of the cooling airflow to the melt stream.

[0012] The purpose of this invention is to provide a spinning device for negative ion yarn spinning, which can avoid or reduce the occurrence of filament breakage while ensuring cooling efficiency.

[0013] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a spinning device for negative ion yarn, comprising a side-blowing device for cooling and solidifying molten fine streams, the side-blowing device comprising a first box having a cooling chamber through which the molten fine streams pass, multiple second boxes stacked on the back of the first box and communicating with the first box, multiple perforated plates disposed in the second boxes, a honeycomb plate disposed at the connection between the second box and the first box, a filter assembly disposed in the first box and covering the multiple honeycomb plates, a yarn guide frame disposed at the bottom of the first box and having multiple yarn guide hooks for guiding the transport of nascent fibers, a return air trough disposed at the bottom of the first box on the side away from the second box, a first exhaust fan communicating with the return air trough, and an air supply mechanism communicating with the multiple second boxes, the air supply mechanism mixing the return air from the first exhaust fan and the cold air output from an external cold air unit in a certain proportion and then delivering them to the corresponding second boxes, each second box being a cooling section.

[0014] By adopting the above technical solution, when cooling and solidifying the molten stream, the return air from the first exhaust fan and the cold air output from the cold air unit are mixed in proportion by the air supply mechanism and then delivered to the corresponding second chamber. At this time, the cooling temperature of the cooling airflow in multiple second chambers can be controlled, and the cooling wind speed of the cooling airflow in multiple second chambers can be controlled by adjusting the power of the air supply mechanism. After passing through multiple perforated plates, honeycomb plates, and filter components, the molten stream is cooled and solidified. At the same time, the first exhaust fan draws the cooled airflow after cooling the molten stream into the return air trough and delivers it to the air supply mechanism for recycling.

[0015] A further configuration of the present invention is as follows: the air supply mechanism includes a plurality of second exhaust fans connected to the second housing, a three-way connector disposed at the air inlet end of the second exhaust fan, a plurality of first solenoid valves disposed on the three-way connector, a plurality of second solenoid valves disposed on the three-way connector, a cold air delivery pipe connected to the plurality of first solenoid valves and realizing connection to an external air conditioning unit, and a hot air delivery pipe connected to the plurality of second solenoid valves and realizing connection to the first exhaust fan; a temperature sensor is disposed inside the second housing, and a controller is disposed on the first housing that is signal-connected to the first exhaust fan, the plurality of temperature sensors, the plurality of first solenoid valves, the plurality of second solenoid valves, and the plurality of second exhaust fans.

[0016] By adopting the above technical solution, the return air from the first exhaust fan and the cold air output from the external air-cooling unit are mixed in proportion and then delivered to the corresponding second chamber through the air supply mechanism. By controlling the opening size of the first solenoid valve and the second solenoid valve, the temperature of the cooling airflow delivered to the corresponding second chamber can be adjusted. Furthermore, the airflow speed of the cooling airflow can be adjusted by adjusting the power of the second exhaust fan. At the same time, with the temperature sensor set in the second chamber, the opening size of the first solenoid valve and the second solenoid valve can be adjusted by the controller according to the temperature of the cooling airflow in the second chamber, so as to adjust the cooling temperature of the input cooling airflow.

[0017] A further configuration of the present invention is as follows: the upper end of the first housing is provided with a receiving cavity extending toward the direction close to the second housing and located at the uppermost part of the second housing; the filter assembly includes a support frame rotatably connected to the bottom of the first housing at its lower end, a plurality of fixing knob bolts passing through the top of the support frame and fixed to the first housing, an angle limiting component disposed between the support frame and the first housing and limiting the maximum downward rotation angle of the support frame, an unwinding shaft rotatably disposed in the receiving cavity, a filter screen wound on the unwinding shaft and having T-shaped rubber strips on both sides, and a filter screen disposed at the top of the first housing and such that it can be unwound from the unwinding shaft. The filter screen output from the reel passes through a guide shaft assembly; the top of the support frame is provided with an inlet for the filter screen to enter, and the bottom of the support frame is provided with an outlet for the filter screen to exit. T-shaped grooves communicating with the inlet and outlet are provided on both sides of the support frame. The rubber strip is slidably connected within the grooves, and the two are pressed together by friction. Multiple pulling notches communicating with the grooves are provided on both sides of the support frame to allow for pulling the rubber strip. When the support frame rotates downwards to its maximum angle, the length of the filter screen located between the guide shaft assembly and the inlet is greater than the length of the filter screen located between the inlet and the outlet.

[0018] By adopting the above technical solution, when the filter assembly filters the cooling airflow, dust, monomers, and oil fumes in the cooling airflow will contaminate the filter screen, affecting the uniformity of the cooling airflow. At this time, the support frame is rotated downward to its maximum angle, so that the new filter screen is output from the unwinding shaft of the required length. Then, after the support frame is reset, the rubber strips on both sides of the filter screen can be gradually pulled through multiple pulling notches, so that the old filter screen is gradually pulled out from the outlet of the support frame, and the new filter screen is replaced within the area of ​​the support frame, thereby achieving rapid filter screen replacement; at the same time, The friction between the rubber strips and the groove ensures that the rubber strips on both sides of the filter screen are firmly and stably attached to the support frame. Multiple pull notches allow the filter screen to be pulled out from top to bottom, solving the problem of excessive friction and inconvenience when pulling the filter screen directly against the support frame. Additionally, old filter screen sections can be cut directly with a knife. Furthermore, in this design, if a roll of filter screen is used up and no replacement is planned, the original cut filter screen can be cleaned and installed on the support frame for use.

[0019] A further configuration of the present invention is as follows: the guide shaft assembly includes a bracket, a first rotating shaft rotatably connected to the bracket, two lifting seats that are lifted and lowered on both sides of the bracket, and a second rotating shaft disposed between the two lifting seats and located below the first rotating shaft. Wedge-shaped guide blocks are provided on the top of both sides of the top of the support frame. The lifting seat has a wedge-shaped part that matches the wedge-shaped guide block. When the support frame is finally reset, the wedge-shaped guide block drives the wedge-shaped part of the lifting seat to move upward so that the second rotating shaft and the first rotating shaft clamp the rubber strips on both sides of the filter screen.

[0020] By adopting the above technical solution, when the support frame rotates downward, the wedge-shaped guide block separates from the lifting seat, so that after the second rotating shaft moves downward, it releases the clamping of the rubber strips on both sides of the filter screen, and the rolled filter screen is unwound; and when the support frame finally resets, the wedge-shaped guide block drives the lifting seat to move upward, so that the second rotating shaft and the first rotating shaft clamp the rubber strips on both sides of the filter screen, thus solving the problem of the rolled filter screen being unwound during the subsequent pulling of the filter screen.

[0021] A further configuration of the present invention is as follows: the angle limiting component includes a first hinge arm with one end hinged to the inside of the first housing, a second hinge arm with one end hinged to the side of the support frame and the other end hinged to the first hinge arm, and handles are provided on both sides of the top of the support frame.

[0022] By adopting the above technical solution, and by setting a first hinge arm and a second hinge arm, the two gradually unfold during the downward rotation of the support frame, ultimately limiting the maximum angle of downward rotation of the support frame. The handle facilitates the downward rotation of the support frame.

[0023] A further feature of the present invention is that: an inclined plate extending downward in a direction away from the second housing is provided between the two sides of the first housing and the two sides of the return air duct; door panels are symmetrically hinged on the two inclined plates to cover the openings on the front side of the first housing and the top of the return air duct; and a transparent observation window is provided on the door panels.

[0024] By adopting the above technical solution, when the cooling airflow after cooling the melt stream is drawn into the return air trough by the first exhaust fan, the door panel makes the first box a relatively sealed space, thus having a good negative pressure effect during the first exhaust fan's suction process, thereby improving the efficiency of the cooling airflow after cooling the melt stream being drawn and recycled; at the same time, the transparent observation window facilitates the observation of the melt stream during the cooling and solidification step.

[0025] A further configuration of the present invention is as follows: Mounting seats with vertical shafts are provided on both sides of the first housing; a lifting sleeve is provided on the vertical shaft; a compression spring with both ends abutting against the lower surfaces of the mounting seats and the lifting sleeve is sleeved on the vertical shaft; the end of the first hinge arm away from the second hinge arm is hinged to the lifting sleeve; a support shaft concentrically arranged with the hinge shaft is provided at the hinge point of the first hinge arm and the second hinge arm; when the door panel is closed, the door panel overcomes the elastic force of the compression spring and is supported on the support shaft; when the door panel is opened to a state parallel to the inclined plate, the compression spring returns to its original position, and the connection point of the first hinge arm and the second hinge arm extends through the end of the support shaft of the inclined plate and abuts against the inner side of the door panel to limit the door panel's movement.

[0026] By adopting the above technical solution, and by optimizing the connection between the first hinge arm and the first housing, a lifting sleeve and a compression spring structure are set up. Firstly, the compression spring can buffer the downward rotation of the support frame. Secondly, when the door panel is closed, the door panel overcomes the elastic force of the compression spring and is supported on the support shaft. When the door panel is opened to a state parallel to the inclined plate, the compression spring returns to its original position, and the connection point of the first hinge arm and the second hinge arm protrudes through the end of the support shaft of the inclined plate and abuts against the inner side of the door panel to limit the door panel. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of Example 2;

[0028] Figure 2 This is a schematic diagram of the side-blowing device in Embodiment 2;

[0029] Figure 3 This is a structural schematic diagram of the support frame, guide shaft assembly, and angle limiting assembly in Embodiment 2;

[0030] Figure 4yes Figure 3 A magnified view of the area located at point A;

[0031] Figure 5 This is a schematic diagram of the gas supply mechanism in Example 2.

[0032] Reference numerals: 1. First housing; 11. Controller; 12. Receiving cavity; 13. Inclined plate; 14. Door panel; 15. Transparent observation window; 16. Mounting base; 161. Vertical shaft; 17. Lifting sleeve; 18. Compression spring; 19. Support shaft; 2. Second housing; 21. Temperature sensor; 3. Perforated plate; 4. Honeycomb panel; 5. Filter assembly; 51. Support frame; 511. Inlet; 512. Outlet; 513. Slide groove; 514. Pull notch; 515. Wedge-shaped guide block; 516. Handle; 52. Fixing knob bolt 53. Angle limiting assembly; 531. First hinged arm; 532. Second hinged arm; 54. Unwinding shaft; 55. Filter screen; 551. Rubber strip; 56. Guide shaft assembly; 561. Bracket; 562. First rotating shaft; 563. Lifting seat; 564. Second rotating shaft; 6. Yarn guide frame; 61. Yarn guide hook; 7. Return air duct; 8. First exhaust fan; 9. Air supply mechanism; 91. Second exhaust fan; 92. T-joint; 93. First solenoid valve; 94. Second solenoid valve; 95. Cold air delivery pipe; 96. Hot air delivery pipe. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the accompanying drawings.

[0034] Example 1: A negative ion yarn spinning process, comprising the following steps: (S1) Melt preparation: Weigh polyester chips, color masterbatch and negative ion finishing agent according to proportion, and mix the polyester chips, color masterbatch and negative ion finishing agent to obtain masterbatch. The mixed masterbatch is fed into a screw extruder for melting, mixing and extrusion, and sent to the metering pump in the spinning box through the screw extruder; (S2) Melt extrusion: The melt is quantitatively extruded from the small hole of the spinneret by the metering pump to form a melt stream; (S3) Cooling and solidification: After the melt stream is output, it is divided into multiple cooling sections from top to bottom along the transport direction of the melt stream. The cooling air velocity of the multiple cooling sections gradually increases in the vertical downward direction, and the cooling temperature of the multiple cooling sections gradually decreases in the vertical downward direction. After cooling and solidification, nascent fibers are formed; (S4) Subsequent processing: The nascent fibers are then oiled, networked and wound into a cylinder to obtain negative ion yarn.

[0035] In step (S3) cooling and solidification, a return air trough is arranged at the bottom of the side of the molten stream away from the multiple cooling sections. The cooling airflow after cooling the molten stream is drawn into the return air trough by the first exhaust fan. The return air from the first exhaust fan and the cold air output from the external cold air unit are mixed in proportion and then delivered to the multiple cooling sections to control the cooling temperature. At the same time, the cooling airflow in the cooling sections passes through multiple perforated plates, honeycomb plates, and filter components in sequence before being output.

[0036] Implementation Results: During the process of the molten stream transforming into nascent fibers, its strength gradually increases while its temperature gradually decreases. By setting up multiple cooling sections, the cooling air velocity in each section gradually increases vertically downwards. This gradual increase in cooling air velocity, based on the increasing strength of the nascent fibers, ensures cooling efficiency. Consequently, the cooling temperature in each cooling section gradually decreases vertically downwards, resulting in a uniform temperature reduction for the nascent fibers. Ultimately, while maintaining cooling efficiency, this approach avoids or reduces filament breakage. Furthermore, the initial use of a lower cooling air velocity prevents excessive shaking of the nascent fibers, which could lead to fiber sticking.

[0037] Firstly, the temperature of the cooling airflow after cooling the molten flow is relatively high (higher than the cooling temperature of the uppermost cooling section). If this cooling airflow were to blow directly into the factory area, it would cause excessively high temperatures, especially in summer, which could easily lead to heatstroke among workers. To address this, this portion of the cooling airflow is recycled. The return air from the first exhaust fan and the cold air output from the air cooler are mixed in a specific ratio and then delivered to multiple cooling sections to control the cooling temperature. This saves energy and eliminates the need for separate air cooler units to output different temperatures. Simultaneously, the return air duct is located at the bottom of the molten flow on the side away from the multiple cooling sections. When air pressure is created in the return air duct, the air above it flows towards the duct, causing the cooling airflow from the multiple cooling sections to tend to flow downwards towards the return air duct. This cooling airflow also serves as the traction force for the downward movement of the molten flow.

[0038] The perforated plate utilizes the throttling effect of the small holes to create a certain airflow resistance, allowing the cooling airflow to disperse along the plate surface. The cooling airflow gradually diffuses evenly after passing through multiple perforated plates. The honeycomb plate transforms the turbulent, irregular airflow into a laminar, horizontally blowing, regular airflow. The filter component further improves the uniformity of the cooling airflow and filters it, ultimately achieving uniform blowing of the cooling airflow towards the melt stream.

[0039] Example 2: A spinning device for spinning negative ion yarn, such as... Figure 1As shown, the structure includes a screw extruder, spinning box, metering pump, spinneret, side blowing device, oiler (for oiling), guide disc, winding device, etc. Among them, the side blowing device has been improved and innovated, while the rest are conventional technical means in this field and will not be described in detail.

[0040] like Figure 2 As shown, the side-blowing device cools and solidifies the molten fine stream. Its structure includes a first housing 1 with a cooling chamber through which the molten fine stream passes; multiple second housings 2 stacked on the back of the first housing 1 and communicating with it; multiple perforated plates 3 within the second housings 2; a honeycomb plate 4 at the connection point between the second housings 2 and the first housing 1; a filter assembly 5 within the first housing 1 covering the multiple honeycomb plates 4; a yarn guide frame 6 at the bottom of the first housing 1 with multiple yarn guide hooks 61 for guiding the transport of nascent fibers; a return air duct 7 at the bottom of the first housing 1 on the side away from the second housings 2; a first exhaust fan 8 communicating with the return air duct 7; and an air supply mechanism 9 communicating with the multiple second housings 2. The air supply mechanism 9 mixes the return air from the first exhaust fan 8 and the cold air output from an external cold air unit in a specific ratio and then delivers the mixture to the corresponding second housing 2. Each second housing 2 constitutes a cooling section.

[0041] like Figures 2 to 4 As shown, the upper end of the first housing 1 is provided with a receiving cavity 12 extending towards the uppermost part of the second housing 2. The filter assembly 5 includes a support frame 51 rotatably connected to the bottom of the first housing 1 at its lower end, multiple fixing knob bolts 52 passing through the top of the support frame 51 and fixed to the first housing 1, an angle limiting assembly 53 disposed between the support frame 51 and the first housing 1 and limiting the maximum downward rotation angle of the support frame 51, a unwinding shaft 54 ​​rotatably disposed in the receiving cavity 12, a filter screen 55 wound on the unwinding shaft 54 ​​and having T-shaped rubber strips 551 on both sides, and a filter screen 55 disposed at the top of the first housing 1, allowing the filter screen 55 output from the unwinding shaft 54 ​​to pass through... The guide shaft assembly 56; the top of the support frame 51 is provided with an inlet 511 for the filter screen 55 to pass through, and the bottom of the support frame 51 is provided with an outlet 512 for the filter screen 55 to exit. The two sides of the support frame 51 are provided with T-shaped grooves 513 that communicate with the inlet 511 and the outlet 512. The rubber strip 551 is slidably connected in the grooves 513 and the two are pressed together by friction. The two sides of the support frame 51 are provided with multiple pulling notches 514 that communicate with the grooves 513 and can pull the rubber strip 551. When the support frame 51 is rotated downward to the maximum angle, the length of the filter screen 55 located between the guide shaft assembly 56 and the inlet 511 is greater than the length of the filter screen 55 located between the inlet 511 and the outlet 512.

[0042] like Figure 3 and Figure 4 As shown, the guide shaft assembly 56 includes a bracket 561, a first rotating shaft 562 rotatably connected to the bracket 561, two lifting seats 563 that are lifted and lowered on both sides of the bracket 561, and a second rotating shaft 564 disposed between the two lifting seats 563 and located below the first rotating shaft 562. Wedge-shaped guide blocks 515 are provided on the top of both sides of the top of the support frame 51. The lifting seats 563 have wedge-shaped portions that match the wedge-shaped guide blocks 515. When the support frame 51 is finally reset, the wedge-shaped guide blocks 515 drive the wedge-shaped portions of the lifting seats 563 to move upward so that the second rotating shaft 564 and the first rotating shaft 562 clamp the rubber strips 551 on both sides of the filter screen 55.

[0043] like Figure 3 and Figure 4 As shown, the angle limiting component 53 includes a first hinge arm 531 and a second hinge arm 532, one end of which is hinged to the side of the support frame 51 and the other end of which is hinged to the first hinge arm 531. Handles 516 are provided on both sides of the top of the support frame 51. Mounting seats 16 with vertical shafts 161 are provided on both sides of the first housing 1. Lifting sleeves 17 are raised and lowered on the vertical shafts 161. Compression springs 18 are sleeved on the vertical shafts 161, with both ends pressing against the lower surfaces of the mounting seats 16 and the lifting sleeves 17. The end of the first hinge arm 531 away from the second hinge arm 532 is hinged to the lifting sleeve 17.

[0044] like Figures 2 to 4 As shown, inclined plates 13 extending downwards in a direction away from the second housing 2 are provided between the two sides of the first housing 1 and the two sides of the return air duct 7. Symmetrically hinged door panels 14 are provided on the two inclined plates 13 to cover the openings on the front of the first housing 1 and above the return air duct 7. A transparent observation window 15 is provided on the door panel 14. A support shaft 19, concentric with the hinge axis, is provided at the hinge point of the first hinge arm 531 and the second hinge arm 532. When the door panel 14 is closed, it is supported on the support shaft 19 after overcoming the elastic force of the compression spring 18. When the door panel 14 is opened to a state parallel to the inclined plates 13, the compression spring 13 returns to its original position, and the connection point of the first hinge arm 531 and the second hinge arm 532 extends through the end of the support shaft 19 of the inclined plate 13 and abuts against the inner side of the door panel 14 to limit the door panel 14.

[0045] like Figure 2 and Figure 5As shown, the air supply mechanism 9 includes multiple second exhaust fans 91 connected to the second housing 2, a three-way connector 92 disposed at the air inlet end of the second exhaust fans 91, multiple first solenoid valves 93 disposed on the three-way connector 92, multiple second solenoid valves 94 disposed on the three-way connector 92, a cold air delivery pipe 95 connected to the multiple first solenoid valves 93 and connected to an external air conditioning unit, and a hot air delivery pipe 96 connected to the multiple second solenoid valves 94 and connected to the first exhaust fan 8. A temperature sensor 21 is disposed inside the second housing 2, and a controller 11 is disposed on the first housing 1 and connected to the first exhaust fan 8, the multiple temperature sensors 21, the multiple first solenoid valves 93, the multiple second solenoid valves 94, and the multiple second exhaust fans 91.

[0046] Implementation effect: When cooling and solidifying the molten fine stream, the return air from the first exhaust fan 8 and the cold air output from the cold air unit are mixed in proportion by the air supply mechanism 9 and then delivered to the corresponding second chamber 2. At this time, the cooling temperature of the cooling airflow in multiple second chambers 2 can be controlled, and the cooling wind speed of the cooling airflow in multiple second chambers 2 can be controlled by adjusting the power of the air supply mechanism 9. After passing through multiple perforated plates 3, honeycomb plates 4, and filter components 5, the molten fine stream is cooled and solidified. At the same time, the first exhaust fan 8 draws the cooled airflow after cooling the molten fine stream into the return air trough 7 and delivers it to the air supply mechanism 9 for recycling.

[0047] When the filter assembly 5 filters the cooling airflow, dust, particles, and fumes in the cooling airflow will contaminate the filter screen 55, affecting the uniformity of the cooling airflow. At this time, the support frame 51 is rotated downward to its maximum angle, so that the new filter screen 55 is output from the unwinding shaft 54 ​​to the required length. Then, after the support frame 51 is reset, the rubber strips 551 on both sides of the filter screen 55 can be gradually pulled through multiple pulling notches 514, so that the old filter screen 55 is gradually pulled out from the outlet 512 of the support frame 51, and the new filter screen 55 is replaced within the area of ​​the support frame 51, so as to achieve rapid replacement of the filter screen 55; at the same time, through the rubber strips 551 The friction between the filter screen 55 and the slide groove 513 ensures that the rubber strips 551 on both sides of the filter screen 55 can be firmly and stably attached to the support frame 51. The multiple pull notches 514 allow the filter screen 55 to be pulled out from top to bottom, solving the problem of excessive friction and inconvenience when directly pulling the filter screen 55 against the support frame 51. Additionally, the old filter screen 55 can be cut directly with a knife. Furthermore, in this configuration, if the rolled filter screen 55 is used up and no new rolled filter screen 55 is intended to be replaced, the filter screen 55 that was previously cut directly with a knife can be cleaned and installed on the support frame 51 for use.

[0048] When the support frame 51 rotates downward, the wedge-shaped guide block 515 separates from the lifting seat 563, causing the second rotating shaft 564 to move downward and release the clamping of the rubber strips 551 on both sides of the filter screen 55, thus unwinding the rolled-up filter screen 55. When the support frame 51 finally resets, the wedge-shaped guide block 515 drives the lifting seat 563 to move upward, so that the second rotating shaft 564 and the first rotating shaft 562 clamp the rubber strips 551 on both sides of the filter screen 55, thus solving the problem of the rolled-up filter screen 55 being unwound during the subsequent pulling of the filter screen 55.

[0049] By setting the first hinge arm 531 and the second hinge arm 532, they gradually unfold during the downward rotation of the support frame 51, ultimately limiting the maximum downward rotation angle of the support frame 51. The handle 516 facilitates the downward rotation of the support frame 51. When the cooling airflow after cooling the molten stream is drawn into the return air trough 7 by the first exhaust fan 8, the door panel 14 makes the first box 1 a relatively sealed space, thus providing a good negative pressure effect during the suction process of the first exhaust fan 8, thereby improving the efficiency of the cooling airflow after cooling the molten stream being drawn and recycled; at the same time, the transparent observation window 15 facilitates the observation of the molten stream during the cooling and solidification step. By optimizing the connection between the first hinge arm 531 and the first housing 1, a lifting sleeve 17 and a compression spring 18 are designed. Firstly, the compression spring 18 provides cushioning during the downward rotation of the support frame 51. Secondly, when the door panel 14 is closed, it overcomes the elastic force of the compression spring 18 and rests on the support shaft 19. When the door panel 14 is opened to a state parallel to the inclined plate 13, the compression spring 18 returns to its original position, and the connection point of the first hinge arm 531 and the second hinge arm 532 extends through the end of the support shaft 19 of the inclined plate 13 and abuts against the inner side of the door panel 14 to limit its movement. When closing the door panel 14, it is only necessary to push the connection point of the first hinge arm 531 and the second hinge arm 532 inward by hand.

[0050] The air supply mechanism 9 mixes the return air from the first exhaust fan 8 and the cold air output from the external air conditioning unit in a certain proportion and then delivers them to the corresponding second housing 2. By controlling the opening size of the first solenoid valve 93 and the opening size of the second solenoid valve 94, the temperature of the cooling airflow delivered to the corresponding second housing 2 can be adjusted. In addition, the airflow speed can be adjusted by adjusting the power of the second exhaust fan 91. At the same time, with the temperature sensor 21 set in the second housing 2, the opening size of the first solenoid valve 93 and the second solenoid valve 94 can be adjusted by the controller 11 according to the temperature of the cooling airflow in the second housing 2, so as to adjust the cooling temperature of the input cooling airflow.

[0051] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A negative ion yarn spinning process, characterized in that: Includes the following steps: (S1) Melt preparation: Weigh polyester chips, color masterbatch and negative ion finishing agent according to the proportion, and mix the polyester chips, color masterbatch and negative ion finishing agent to obtain masterbatch. The mixed masterbatch is fed into the screw extruder for melting, mixing and extrusion, and then fed into the metering pump in the spinning box through the screw extruder. (S2) Melt extrusion: The melt is extruded quantitatively from the small orifice of the spinneret by a metering pump to form a fine melt stream; (S3) Cooling and solidification: After the melt stream is output, it is divided into multiple cooling sections from top to bottom along the transport direction of the melt stream. The cooling air velocity of the multiple cooling sections gradually increases in the vertical downward direction, and the cooling temperature of the multiple cooling sections gradually decreases in the vertical downward direction. After cooling and solidification, nascent fibers are formed. (S4) Subsequent processing: The nascent fibers are then oiled, networked, and wound into a bobbin to obtain negative ion yarn; In step (S3) cooling and solidification, a return air trough is arranged at the bottom of the side of the melt stream away from multiple cooling sections. The cooling airflow after cooling the melt stream is drawn into the return air trough by the first exhaust fan. The return air from the first exhaust fan and the cold air output from the external cold air unit are mixed in proportion and then delivered to multiple cooling sections to control the cooling temperature. In step (S3) cooling and solidification, the cooling airflow of the cooling section passes through multiple perforated plates, honeycomb plates and filter components in sequence before being output. The device includes a side-blowing air device for cooling and solidifying a fine stream of melt. The side-blowing air device comprises a first housing (1) having a cooling chamber through which the fine stream of melt passes; multiple second housings (2) stacked on the back of the first housing (1) and communicating with the first housing (1); multiple perforated plates (3) disposed within the second housings (2); a honeycomb plate (4) disposed at the connection between the second housing (2) and the first housing (1); a filter assembly (5) disposed within the first housing (1) and covering the multiple honeycomb plates (4); and a filter assembly (5) disposed within the first housing (1). The bottom of the first housing (1) has a yarn guide frame (6) with multiple yarn guide hooks (61) for guiding the transport of nascent fibers, a return air trough (7) located at the bottom of the first housing (1) away from the second housing (2), a first exhaust fan (8) communicating with the return air trough (7), and an air supply mechanism (9) communicating with multiple second housings (2). The air supply mechanism (9) mixes the return air from the first exhaust fan (8) and the cold air output from the external cold air unit in a certain proportion and then delivers them to the corresponding second housing (2). Each second housing (2) is a cooling section. The upper end of the first housing (1) is provided with a receiving cavity (12) extending towards the second housing (2) and located at the uppermost end of the second housing (2). The filter assembly (5) includes a support frame (51) rotatably connected to the bottom of the first housing (1) at its lower end, a plurality of fixing knob bolts (52) passing through the top of the support frame (51) and fixed on the first housing (1), an angle limiting assembly (53) disposed between the support frame (51) and the first housing (1) and limiting the maximum angle of downward rotation of the support frame (51), a unwinding shaft (54) rotatably disposed in the receiving cavity (12), a filter screen (55) wound on the unwinding shaft (54) and having T-shaped rubber strips (551) on both sides, and a guide shaft assembly (551) disposed at the top of the first housing (1) and allowing the filter screen (55) output from the unwinding shaft (54) to pass through. 6); The top of the support frame (51) is provided with an inlet (511) for the filter screen (55) to pass through, and the bottom of the support frame (51) is provided with an outlet (512) for the filter screen (55) to pass through. The two sides of the support frame (51) are provided with T-shaped grooves (513) that communicate with the inlet (511) and the outlet (512). The rubber strip (551) is slidably connected in the groove (513) and the two are pressed together by friction. The two sides of the support frame (51) are provided with multiple pulling notches (514) that communicate with the groove (513) and can pull the rubber strip (551). When the support frame (51) is rotated downward to the maximum angle, the length of the filter screen (55) located between the guide shaft assembly (56) and the inlet (511) is greater than the length of the filter screen (55) located between the inlet (511) and the outlet (512).

2. The negative ion yarn spinning process according to claim 1, characterized in that: The gas supply mechanism (9) includes multiple second exhaust fans (91) connected to the second housing (2), a three-way connector (92) set at the air inlet end of the second exhaust fan (91), multiple first solenoid valves (93) set on the three-way connector (92), multiple second solenoid valves (94) set on the three-way connector (92), a cold air delivery pipe (95) connected to the multiple first solenoid valves (93) and connected to an external cold air unit, and a hot air delivery pipe (96) connected to the multiple second solenoid valves (94) and connected to the first exhaust fan (8). A temperature sensor (21) is provided inside the second housing (2), and a controller (11) is provided on the first housing (1) that is connected to the first exhaust fan (8), multiple temperature sensors (21), multiple first solenoid valves (93), multiple second solenoid valves (94), and multiple second exhaust fans (91).

3. The negative ion yarn spinning process according to claim 2, characterized in that: The guide shaft assembly (56) includes a bracket (561), a first rotating shaft (562) rotatably connected to the bracket (561), two lifting seats (563) that are lifted and lowered on both sides of the bracket (561), and a second rotating shaft (564) that is located between the two lifting seats (563) and below the first rotating shaft (562). The top of the support frame (51) is provided with wedge-shaped guide blocks (515) on both sides. The lifting seat (563) has a wedge-shaped part that matches the wedge-shaped guide block (515). When the support frame (51) is finally reset, the wedge-shaped guide block (515) drives the wedge-shaped part of the lifting seat (563) to move upward so that the second rotating shaft (564) and the first rotating shaft (562) clamp the rubber strips (551) on both sides of the filter screen (55).

4. The negative ion yarn spinning process according to claim 3, characterized in that: The angle limiting component (53) includes a first hinge arm (531) with one end hinged to the inside of the first housing (1), and a second hinge arm (532) with one end hinged to the side of the support frame (51) and the other end hinged to the first hinge arm (531). Handles (516) are provided on both sides of the top of the support frame (51).

5. The negative ion yarn spinning process according to claim 4, characterized in that: An inclined plate (13) extending downward toward the direction away from the second box (2) is provided between the two sides of the first box (1) and the two sides of the return air duct (7). A door panel (14) is symmetrically hinged on the two inclined plates (13) to cover the openings above the front of the first box (1) and the return air duct (7). A transparent observation window (15) is provided on the door panel (14).

6. The negative ion yarn spinning process according to claim 5, characterized in that: The first housing (1) has mounting bases (16) with vertical shafts (161) on both sides. A lifting sleeve (17) is provided on the vertical shaft (161). A compression spring (18) with both ends abutting against the lower surfaces of the mounting base (16) and the lifting sleeve (17) is sleeved on the vertical shaft (161). The end of the first hinge arm (531) away from the second hinge arm (532) is hinged to the lifting sleeve (17). At the hinge point between the first hinge arm (531) and the second hinge arm (532), there is a hinge. A support shaft (19) is concentrically arranged; when the door panel (14) is closed, the door panel (14) is supported on the support shaft (19) after overcoming the elastic force of the compression spring (18); when the door panel (14) is opened to a state parallel to the inclined plate (13), the compression spring (18) is reset, and the connection point of the first hinge arm (531) and the second hinge arm (532) passes through the inclined plate (13). The end of the support shaft (19) abuts against the inside of the door panel (14) to limit the door panel (14).

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