A bio-based composite monofilament spinning and winding device

Abstract

This invention discloses a bio-based composite monofilament spinning and winding device, relating to the field of spinning production technology, and solves the technical problem of uneven cooling in side-blowing cooling of bio-based composite spinning in related technologies. The device includes a first extruder, a second extruder, a spinning box, and a ring-blowing assembly. The first and second extruders are respectively connected to the composite spinning assembly in the spinning box, and the composite monofilaments are ejected through the spinneret of the spinning box. The ring-blowing assembly includes a central ring blower, a central ring blower box, an outer ring blower, and an outer ring blower box. The central ring blower is vertically arranged in the internal vertical channel of the central ring blower box, and its bottom end is connected to the air inlet. This device ensures that the curing and forming conditions of the filaments are basically the same in space, which is beneficial for uniform structure and linear density, solving the problem of uneven cooling in side-blowing cooling and improving the cooling of bio-based composite spinning.

Description

Technical Field

[0001] This invention relates to the field of spinning production technology, and in particular to a bio-based composite monofilament spinning and winding device. Background Technology

[0002] Products made from bio-based materials through composite spinning are biodegradable after use, which is beneficial to the environment. Currently, bio-based PLA chips and bio-based polyamide XX chips can be mass-produced, combining the advantages of their respective bio-based polymers to form composite monofilaments. After passing through the spinneret in the composite spinning box, the filament bundle must undergo annular cooling. Current side-blowing cooling methods suffer from uneven cooling of the monofilaments due to varying distances from the air vents, a defect that urgently needs improvement. Summary of the Invention

[0003] This application provides a bio-based composite monofilament spinning and winding device, which solves the technical problem of uneven cooling in the side-blowing cooling of bio-based composite spinning in related technologies.

[0004] This application provides a bio-based composite monofilament spinning and winding device, including a first extruder, a second extruder, a spinning box, and a ring blowing assembly. The spinning box includes a composite spinning assembly and a spinneret. The first and second extruders are respectively connected to the composite spinning assembly and are ejected as composite monofilaments through the spinneret. The ring blowing assembly includes a central ring blowing duct, a central ring blowing box, an outer ring blowing duct, and an outer ring blowing box. The central ring blowing duct is vertically arranged in the internal vertical channel of the central ring blowing box, and its bottom end is connected to the air inlet. The air duct and the central ring air box form an annular thread-passing channel. The outer ring air box is connected to the bottom side of the central ring air box. The outer ring air duct is arranged vertically inside the outer ring air box. The top end of the outer ring air duct is connected to the bottom end of the annular thread-passing channel. The ring blowing assembly includes a first air passage hole group disposed in the central ring air duct to connect the central ring air duct and the annular thread-passing channel, a second air passage hole group disposed in the central ring air box to connect the annular thread-passing channel and the central ring air box, and a third air passage hole group disposed in the outer ring air duct to connect the outer ring air box and the outer ring air duct.

[0005] Optionally, the central ring blower box is provided with multiple first rectifiers, the first rectifiers are inclined and the top end is closer to the internal vertical channel of the central ring blower box than the bottom end;

[0006] The outer ring blower box is equipped with multiple second rectifiers, which are inclined and whose top end is offset from the outer ring blower box compared to the bottom end.

[0007] Optionally, the ring blowing assembly also includes a bellows lifting mechanism, the movable end of which is fixedly connected to the outer ring blowing box, and the bellows lifting mechanism drives the outer ring blowing box to move vertically.

[0008] Optionally, the central ring blower box is provided with an annular rectifier perforated plate, which encloses and forms the internal vertical channel of the central ring blower box. The second air passage hole group is provided on the rectifier perforated plate, and the diameter of the second air passage hole group decreases sequentially from top to bottom.

[0009] The diameter of the third air passage group increases sequentially from top to bottom.

[0010] Optionally, the device also includes a slow cooler, which is located between the spinning box and the ring blowing assembly.

[0011] Optionally, the first extruder is used to form a bio-based polyamide melt, and the first extruder includes:

[0012] The first screw is set vertically;

[0013] The first threaded sleeve is fitted over the first threaded rod;

[0014] The first heat insulation cover is externally mounted on the first threaded sleeve and connected to the first threaded sleeve through the first support frame;

[0015] The first raw material inlet section is inclined and connected to the high position of the first screw;

[0016] The first vibrating screen is installed at the first raw material inlet section;

[0017] The first screw motor is connected to the first screw via the first reducer;

[0018] The first heating coil is arranged around the outside of the first threaded sleeve and inside the first heat insulation cover;

[0019] The second extruder is used to form bio-based PLA melt, and the second extruder includes:

[0020] The second screw is installed vertically;

[0021] The second threaded sleeve is fitted over the first threaded rod;

[0022] The second insulation cover is installed over the second screw sleeve;

[0023] The second raw material inlet section is inclined and connected to the high position of the second screw.

[0024] The second vibrating screen is installed at the second raw material inlet section;

[0025] The second screw motor is connected to the second screw via the second reducer;

[0026] The second heating coil is arranged around the outside of the second threaded sleeve and inside the second heat insulation cover;

[0027] The screw exhaust mechanism includes an on / off valve installed on the second screw sleeve. The on / off valve is used to open and close the exhaust port. The exhaust port is connected to the gas collection chamber. The gas collection chamber is located on the inner wall at the junction of the compression section and the metering section of the second screw. The second screw includes a feeding section, a compression section and a metering section arranged in sequence.

[0028] Optionally, the device also includes a passageway, one end of which is connected to the bottom end of the outer ring blower of the ring blowing assembly;

[0029] The device also includes a first suction mechanism and a second suction mechanism. The first suction mechanism is located between the ring blowing assembly and the channel, and the second suction mechanism is located at the bottom end of the channel.

[0030] Optionally, the device also includes an oiling mechanism, a yarn guide, a feed roller and a yarn separating roller, three pairs of drawing hot rollers, a tension guide plate and at least one winding head, arranged sequentially in the process sequence and located after the passageway.

[0031] Optionally, the apparatus also includes a water bath, a blower mechanism, an oiling mechanism, a yarn guide, a feed roller and a yarn separating roller, four pairs of drawing hot rollers, a tension guide plate, and at least one winding head, arranged sequentially in the process sequence and located after the ring blowing assembly.

[0032] Optionally, the water bath is provided with at least one first guide wire disc inside the tank, and a bracket is fixedly connected to the outside of the water bath. The bracket is fixed with a second guide wire disc. The bracket also includes a water receiving tank, a first guide wheel, and a second guide wheel. The composite monofilament passing through the outer ring blower passes sequentially through the first guide wire disc, the second guide wire disc, the first guide wheel, and the second guide wheel until it reaches the oiling mechanism. The blower is used to blow the coolant carried by the composite monofilament passing through the bracket into the water receiving tank. The water receiving tank is located on the bottom side of the first guide wheel and the second guide wheel.

[0033] The beneficial effects of this application are as follows: This application provides a bio-based composite monofilament spinning and winding device, in which two bio-based material melts are output from a first extruder and a second extruder, respectively, and input into a composite spinning assembly. The melts are then extruded as composite monofilaments through a spinneret. The composite monofilaments are then cooled by an annular blowing assembly. Specifically, the cooling air flows into the central annular blowing duct from the air inlet, enters the annular threading channel radially along the central annular blowing duct through the first air passage group, then flows into the cavity of the central annular blowing box through the second air passage group, then flows downward into the cavity of the outer annular blowing box, and finally flows into the outer annular blowing duct through the third air passage group. In this scheme, the composite monofilaments pass through the annular threading channel and the outer annular blowing duct in sequence. Specifically, multiple sets of composite monofilaments are evenly spaced along the annular ring and pass through the annular threading channel. Therefore, the curing and molding conditions of the filaments in space are basically the same, which is beneficial to the uniformity of structure and linear density. This solves the defect of uneven cooling in side blowing cooling, which is beneficial to the cooling of bio-based composite spinning, and is beneficial to production and product quality. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention.

[0035] Figure 1 A schematic diagram of a bio-based composite monofilament spinning and winding device provided in this application;

[0036] Figure 2 for Figure 1 A schematic diagram of the specific structure of the first extruder in the process;

[0037] Figure 3 for Figure 1 A schematic diagram of the specific structure of the second extruder in the process;

[0038] Figure 4 for Figure 3 A schematic diagram of a screw exhaust mechanism for a second extruder is shown below.

[0039] Figure 5 for Figure 1 A schematic diagram of the specific structure of the spinning box in the diagram;

[0040] Figure 6 for Figure 1 A schematic diagram of the specific structure of the ring blowing assembly in the middle;

[0041] Figure 7 A schematic diagram of another bio-based composite monofilament spinning and winding device provided in this application;

[0042] Figure 8 for Figure 7 A schematic diagram of the specific structure of the water bath tank. Detailed Implementation

[0043] This application provides a bio-based composite monofilament spinning and winding device, which solves the technical problem of uneven cooling in the side-blowing cooling of bio-based composite spinning in related technologies.

[0044] The technical solution in this application is to solve the above-mentioned technical problems, and the general idea is as follows:

[0045] A bio-based composite monofilament spinning and winding device includes a first extruder, a second extruder, a spinning box, and a ring blowing assembly. The spinning box includes a composite spinning assembly and a spinneret. The first and second extruders are respectively connected to the composite spinning assembly and are ejected as composite monofilaments through the spinneret. The ring blowing assembly includes a central ring blowing duct, a central ring blowing box, an outer ring blowing duct, and an outer ring blowing box. The central ring blowing duct is vertically arranged in the internal vertical channel of the central ring blowing box, and its bottom end is connected to an air inlet. The ring blower assembly forms an annular thread-passing channel with the central ring blower box. The outer ring blower box is connected to the bottom side of the central ring blower box. The outer ring blower is arranged vertically inside the outer ring blower box. The top end of the outer ring blower is connected to the bottom end of the annular thread-passing channel. The ring blower assembly includes a first air passage hole group disposed in the central ring blower to connect the central ring blower box and the annular thread-passing channel, a second air passage hole group disposed in the central ring blower box to connect the annular thread-passing channel and the central ring blower box, and a third air passage hole group disposed in the outer ring blower to connect the outer ring blower box and the outer ring blower box.

[0046] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0047] Example 1

[0048] Please refer to Figure 1 , Figure 5 and Figure 6 This embodiment discloses a bio-based composite monofilament spinning and winding device, including a first extruder 1, a second extruder 2, a spinning box 7 and a ring blowing assembly 9. The spinning box 7 includes a composite spinning assembly 7-7 and a spinneret 7-5. The first extruder 1 and the second extruder 2 are respectively connected to the composite spinning assembly 7-7 and are ejected in the form of composite monofilaments through the spinneret 7-5.

[0049] like Figure 6As shown, the ring blowing assembly 9 includes a central ring blowing duct 9-1, a central ring blowing box 9-2, an outer ring blowing duct 9-3, and an outer ring blowing box 9-4. The central ring blower 9-1 is arranged vertically in the internal vertical channel of the central ring blower box 9-2. The bottom end of the central ring blower 9-1 is connected to the air inlet 9-9. The central ring blower 9-1 and the central ring blower box 9-2 form an annular thread-passing channel. The outer ring blower box 9-4 is connected to the bottom side of the central ring blower box 9-2. The outer ring blower 9-3 is arranged vertically inside the outer ring blower box 9-4. The top end of the outer ring blower 9-3 is connected to the bottom end of the annular thread-passing channel. The ring blowing assembly 9 includes a first air passage hole group provided in the central ring blower 9-1 to connect the central ring blower 9-1 and the annular thread-passing channel, a second air passage hole group provided in the central ring blower box 9-2 to connect the annular thread-passing channel and the central ring blower box 9-2, and a third air passage hole group provided in the outer ring blower 9-3 to connect the outer ring blower box 9-4 and the outer ring blower 9-3.

[0050] The first, second, and third air vent groups are not shown in the figure, but are used to illustrate the scheme in conjunction with the cooling airflow direction.

[0051] Specifically, two bio-based material melts are output from the first extruder 1 and the second extruder 2, respectively, and fed into the composite spinning assembly 7-7. The melts are then extruded as composite monofilaments through the spinneret 7-5, and subsequently cooled by the ring blowing assembly 9. The ring blowing cooling process involves cooling air flowing from the air inlet 9-9 into the central ring blowing duct 9-1, passing through the first air passage group along the radial direction of the central ring blowing duct 9-1 into the annular yarn passage channel, then through the second air passage group into the cavity of the central ring blowing box 9-2, then downwards into the cavity of the outer ring blowing box 9-4, and finally through the third air passage group into the outer ring blowing duct 9-3.

[0052] like Figure 6 The diagram shows composite monofilaments 9-6. In this scheme, the composite monofilaments sequentially pass through an annular yarn passage and an outer ring blower 9-3. It should be noted that the spinning nozzles of the composite monofilaments are evenly distributed on a circular surface according to a defined pattern, forming multiple sets of composite monofilaments evenly spaced along the ring. They are then cooled by the cooling air from the annular yarn passage and the outer ring blower 9-3. Due to the circular characteristic—that is, the distance from any point on the circumference to the center is equal—the curing conditions between the filaments are essentially the same, which is beneficial for uniform structure and linear density. This solves the problem of uneven cooling inherent in side-blowing cooling, is beneficial for the cooling of bio-based composite spinning, and improves production and product quality.

[0053] The ring-blowing component 9 in this embodiment includes central ring-blowing and outer ring-blowing, which not only achieves the purpose of symmetrical cooling of composite monofilaments, but also enables effective secondary utilization of cooling air, which is beneficial to energy saving and environmental protection, and also ensures that the bio-based composite monofilaments have sufficient cooling length and cooling time.

[0054] Please refer to Figure 1 The bio-based composite monofilament spinning and winding device is also equipped with a slow cooler 8, which is located between the spinning box 7 and the ring blowing assembly 9. The composite monofilament coming out of the spinning box 7 passes through the slow cooling function of the slow cooler 8 before entering the subsequent ring blowing cooling. The purpose of setting up the slow cooler 8 is to address the issue that, given the large diameter of the composite monofilament, if the spinneret 7-5 directly contacts the cooling air of the annular blowing assembly 9, the temperature of the spinneret orifice of the spinneret 7-5 will decrease. This low temperature will affect the filament formation effect of the liquid material within the spinneret 7-5, causing a core-skin phenomenon and impacting the quality of the composite monofilament. Furthermore, if the composite monofilament cools rapidly due to the high temperature of the spinneret 7-5, the radial molecular arrangement of the composite monofilament will become unstable, reducing its strength and quality. By setting up the slow cooler 8, the composite monofilament cools slowly, resulting in a higher and more stable temperature near the spinneret 7-5. This leads to better spinnereting. The slow cooling of the composite monofilament by the slow cooler 8 also stabilizes its radial molecular arrangement, improving its tensile strength and overall quality.

[0055] This embodiment further defines the cooling airflow direction in the annular blowing assembly 9.

[0056] Optionally, such as Figure 6 The central ring blower box 9-2 is provided with a plurality of first rectifier plates 9-7. The first rectifier plates 9-7 are inclined and their top ends are closer to the internal vertical channel of the central ring blower box 9-2 than their bottom ends. The outer ring blower box 9-4 is provided with a plurality of second rectifier plates 9-8. The second rectifier plates 9-8 are inclined and their top ends are offset from the outer ring blower 9-3 than their bottom ends.

[0057] like Figure 6 As shown, the first rectifier plate 9-7 can also be arranged in multiple layers along the vertical direction; the inclination of the multiple layers can be set to be consistent or slightly different. By setting the first rectifier plate 9-7, the air coming out of the annular wire passage is rectified and guided into the outer ring blower box 9-4 below the central ring blower box 9-2.

[0058] like Figure 5 As shown, the second rectifier plate 9-8, located inside the outer ring air box 9-4, rectifies the airflow entering the outer ring air box 9-4 and guides it into the outer ring air duct 9-3. By setting the rectifier plate, the airflow of the ring blowing assembly 9 is regularized and the operation is stable, which is beneficial to the stable and uniform cooling of the composite monofilament.

[0059] Optionally, such as Figure 6 As shown, the ring blowing assembly 9 also includes a wind box lifting mechanism 9-5. The movable end of the wind box lifting mechanism 9-5 is fixedly connected to the outer ring blowing box 9-4. The wind box lifting mechanism drives the outer ring blowing box 9-4 to move vertically. Figure 6 The middle air box lifting mechanism 9-5 is set with guide rails and guide blocks to connect the guide blocks to the outer ring air box 9-4, and control the box and cylinder in the ring blowing assembly 9 to move vertically along the guide rails to move closer to or away from the slow cooler.

[0060] Optionally, such as Figure 6 As shown, a ring-shaped rectifier perforated plate 9-10 is provided inside the central ring blower box 9-2. The rectifier perforated plate 9-10 encloses and forms the internal vertical channel of the central ring blower box 9-2, that is, the rectifier perforated plate 9-10 serves as the peripheral wall of the internal vertical channel. The second air passage hole group is provided on the rectifier perforated plate 9-10, and the diameter of the second air passage hole group decreases sequentially from top to bottom. The diameter of the third air passage hole group increases sequentially from top to bottom.

[0061] In detail, considering the relatively large diameter of the composite monofilament and the gradual crystallization process, a stepped air velocity distribution is required to ensure effective and consistent cooling of the filament bundle both inside and out. The aperture of the second air passage group distributed on the rectifier perforated plate 9-10 is progressively reduced from top to bottom, for example, gradually transitioning from φ0.45 to φ0.15, to ensure that the air velocity within the annular filament passage channel is approximately equal. Similarly, as the cooling air enters the outer annular air box 9-4 vertically from the central annular air box 9-2 and then horizontally into the outer annular air duct 9-3, the aperture of the third air passage group on the outer annular air duct 9-3 is progressively increased from top to bottom to ensure that the air velocity within the outer annular air duct 9-3 is approximately equal, thus achieving a uniform cooling environment.

[0062] Optionally, the length of the rectifier perforated plate 9-10 is set to 300mm-1000mm, with 600mm-800mm being preferred.

[0063] Optionally, multiple layers of nonwoven fabric of varying thickness are sequentially wrapped around the rectifier perforated plate 9-10, and multiple layers of nonwoven fabric of varying thickness are sequentially wrapped around the outer ring blower 9-3.

[0064] Low-temperature and high-humidity treated air is introduced through the air inlet 9-9 of the ring blowing assembly 9. The low temperature can be selected from 19℃ to 21℃, and the high humidity includes a relative humidity of 85-90RH. After the composite monofilament is cooled, the temperature of the cooling air will rise, and the temperature of the air entering the outer ring blowing box 9-4 can be controlled at 27℃-30℃.

[0065] Example 2

[0066] Based on the bio-based composite monofilament spinning and winding device of Example 1, this example specifically refers to the composite monofilament as a composite monofilament of bio-based polyamide XX and bio-based PLA, and further explains the process from the extruder to the spinning box.

[0067] like Figure 2 As shown, the first extruder 1 is used to input bio-based polyamide raw materials and output bio-based polyamide melt. The first extruder 1 includes a first screw 1-1, a first screw sleeve 1-2, a first insulation cover 1-3, a first raw material inlet section 1-4, a first vibrating screen 1-5, a first screw motor 1-7, and a first heating coil 1-8. The first screw 1-1 is arranged vertically, the first screw sleeve 1-2 is sleeved on the outside of the first screw 1-1, the first insulation cover 1-3 is disposed outside the first screw sleeve 1-2, the first insulation cover 1-3 and the first screw sleeve 1-2 are connected by a first support frame 1-9, the first raw material inlet section 1-4 is arranged at an angle and connected to the high position of the first screw 1-1, the first vibrating screen 1-5 is installed in the first raw material inlet section 1-4, the first screw motor 1-1 is connected to the first screw 1-1 through a first reducer 1-6, and the first heating coil 1-8 is arranged around the outside of the first screw sleeve 1-2 and is disposed inside the first insulation cover.

[0068] In detail, the first extruder 1 is characterized by a vertically arranged screw, with other components correspondingly arranged to form a vertical screw extruder structure. The transmission mechanism of the vertical screw extruder uses a cross-slider coupling to connect a vertical planetary cycloidal pinwheel reducer. Compared with a horizontal reducer, this transmission mechanism has the advantages of compact structure, light weight, convenient assembly and disassembly, large reduction ratio, low wear, and long service life.

[0069] The bio-based polyamide raw material enters from the first raw material inlet section 1-4 between the first screw sleeve 1-2 and the first screw 1-1 by its own weight, and continues to be conveyed downwards under the action of the rotational motion of the first screw 1-1. In this scheme, to avoid the phenomenon of raw material jamming at the inlet, a first vibrating screen 1-5 is added to the first raw material inlet section 1-4 to assist in the conveying of raw material using pulses; alternatively, the first screw sleeve 1-2 can be set into at least two sections so that the first screw sleeve 1-2 can be quickly disassembled and dealt with in case of ring blockage.

[0070] Furthermore, considering the instability of bio-based polyamide XX raw materials, the chips will degrade during the melting process, producing corrosive substances that corrode the screw. This causes the dimensional tolerance between the screw sleeve and the screw to gradually increase, affecting the capacity and efficiency of the screw extruder. Therefore, the first screw 1-1 is set into three sections, including a feeding section, a compression section, and a metering section, as follows: Figure 1 The first screw 1-1 shown is divided into a feeding section 1-1a and a compression and metering section 1-1b.

[0071] like Figure 3As shown, the second extruder 2 is used to process bio-based PLA raw materials and output bio-based PLA melt. The second extruder 2 includes a second screw 2-1, a second screw sleeve 2-2, a second insulation cover 2-9, a second raw material inlet section 2-4, a second vibrating screen 2-5, a second screw motor 2-7, a second heating coil 2-8, and a screw exhaust mechanism 2-3. The second screw 2-1 is vertically arranged, the second screw sleeve 2-2 is fitted outside the first screw 1-1, the second insulation cover 2-9 is fitted over the second screw sleeve 2-2, the second raw material inlet section 2-4 is inclined and connected to the high position of the second screw 2-1, the second vibrating screen 2-5 is installed in the second raw material inlet section 2-4, the second screw motor 2-7 is connected to the second screw 2-1 through a second reducer 2-6, and the second heating coil 2-8 is arranged around the second screw sleeve 2-2 and inside the second insulation cover 2-9. The screw exhaust mechanism 2-3 includes an on / off valve installed on the second screw sleeve 2-2. The on / off valve is used to open and close the exhaust port 2-3d. The exhaust port 2-3d communicates with the gas collection chamber 2-3g. The gas collection chamber 2-3g is located on the inner wall at the junction of the compression section and the metering section of the second screw 2-1. The second screw 2-1 includes a feeding section, a compression section, and a metering section arranged sequentially. Figure 3 The second screw 2-1 shown includes a feeding section 2-1a and a compression section and a metering section 2-1b.

[0072] The second extruder 2 is also a vertical screw extruder, similar to the first extruder 1. The difference is that it is also equipped with a screw exhaust mechanism 2-3. Due to the instability of bio-based polylactic acid raw materials, hydrolysis will occur during the melting process to generate gas. This gas will seriously affect the subsequent spinning, the most significant being the breakage of the yarn, and needs to be discharged.

[0073] In detail, such as Figure 4 As shown, the gas collection chamber 2-3g is used to collect the gas generated during the slicing melting process. The opening and closing valve controlling the opening and closing of the exhaust port 2-3d specifically involves: the second threaded sleeve 2-2 includes a base located on the outer edge, the exhaust port 2-3d is L-shaped and located inside the base, and the two ends of the exhaust port 2-3d are respectively connected to the gas collection chamber 2-3g and the outside atmosphere. The opening and closing valve is installed on the base; the opening and closing valve includes a valve body 2-3b, a packing seal 2-3c, a valve stem 2-3a and a bushing 2-3e, part of the valve body 2-3b is located inside the base 1-c, and the other part protrudes from the base (e.g., Figure 4As shown, part of the valve body 2-3b is located inside the base, while another part is exposed outside the base. The valve stem 2-3a is movably inserted through the valve body 2-3b and is located within the base, thus the valve stem 2-3a is also movably inserted through the base. The packing seal 2-3c is located within the base and between the base and the valve stem 2-3a to seal the gap between the base and the valve stem 2-3a, ensuring that all gas is discharged through the exhaust port 2-3d. The end of the valve stem 2-3a is arc-shaped to close or open the L-shaped bend of the exhaust port 2-3d. The bushing 2-3e is located at the L-shaped bend of the exhaust port 2-3d in the base, and the bushing 2-3e is configured to abut against the arc-shaped end of the valve stem 2-3a to ensure good sealing when the valve stem 2-3a closes the exhaust port 2-3d.

[0074] in, Figure 4 Also shown is a sealing gasket 2-3f, which is installed at the compression section and metering section of the second screw 2-1.

[0075] Example 3

[0076] This embodiment is based on the bio-based composite monofilament spinning and winding device of Embodiments 1 and 2, and further explains the spinning box.

[0077] Please refer to Figure 5 and combined Figure 1 In the design, one melt inlet of the spinning box 7 is connected to the first extruder 1 through the first melt pipe 3 and to the second extruder 2 through the second melt pipe 4. The spinning box is also equipped with a first metering pump 7-1 and a second metering pump 7-2 to drive the movement of two raw material melts respectively. The first metering pump 7-1 is equipped with a metering pump drive 5 and the second metering pump 7-2 is equipped with a metering pump drive 6. The channel forming the melt inlet passes through the pump plate 7-3, and after passing through the metering pump, it passes through the distribution plate 7-4 to the composite spinning assembly 7-7, and then is ejected in the form of composite monofilament through the spinneret 7-5.

[0078] The spinning box 7 is also equipped with a heat preservation block 7-6, which surrounds the first metering pump 7-1 and the second metering pump 7-2. A heating ring 7-8 is provided around the periphery of the spinning box 7 to heat the melt. A temperature sensor 7-9 is also provided to measure the real-time temperature of the heat preservation block 7-6. Regarding the channels inside the spinning box 7, a first melt pressure measuring element 7-10 and a second melt pressure measuring element 7-11 are respectively provided to measure the melt pressure.

[0079] Example 4

[0080] Based on the bio-based composite monofilament spinning and winding device of Examples 1, 2, and 3, this example further explains the winding part of the device for the purpose of spinning fine denier.

[0081] Please refer to Figure 1 The bio-based composite monofilament spinning and winding device also includes a channel 11, one end of which is connected to the bottom end of the outer ring blower 9-3 of the ring blower assembly 9. The composite monofilament cooled by the ring blower assembly 9 passes through the channel 11.

[0082] The device also includes a first suction mechanism 10 and a second suction mechanism 12. The first suction mechanism 10 is located between the ring-blowing assembly 9 and the channel 11, and the second suction mechanism 12 is located at the bottom end of the channel 11. The first suction mechanism 10 creates a negative pressure environment within the ring-blowing assembly 9, which facilitates the passage of the composite monofilament through the ring-blowing assembly 9 and promotes uniform cooling airflow within the ring-blowing assembly 9. The second suction mechanism 12 creates a negative pressure environment within the channel 11, which facilitates the passage of the composite monofilament through the longer channel 11.

[0083] Please refer to Figure 1 The bio-based composite monofilament spinning and winding device also includes an oiling mechanism 13, a yarn guide 14, a feed roller and a yarn separating roller 15, three pairs of drawing hot rollers, a tension guide plate 19, and at least one winding head, arranged sequentially in the process sequence and located after the passage.

[0084] In detail, the oiling mechanism 13 can be in the form of an oil wheel. The composite monofilament enters the guide 14 through the oiling mechanism 13. The filament bundle turns at an angle of 0°-90° and enters the feed roller and split roller 15, which are tension rollers. The roller shell surface is made of chromium oxide + aluminum oxide. The filament is wound 1 to 5 times on the roller surface without heating. The speed is 450-750m / min. Then it is conveyed to the first pair of three pairs of drawing hot rollers 16.

[0085] The first pair of drafting hot rollers 16 adopts an adjustable angle hot roller + adjustable angle hot roller. The outer surface of the hot roller shell is chromium oxide + aluminum oxide. The roller size is (2×φ(190-250)×(350-450)mm). This pair of rollers is a low temperature roller. The filament is wound on the roller surface for 6.5 to 7.5 turns. The temperature is set at 80-100℃ and the spinning speed is 700-800m / min. After winding, it is conveyed to the second pair of drafting hot rollers 17 of the three pairs of drafting hot rollers.

[0086] The second pair of drafting hot rollers 17 adopts an adjustable angle hot roller + adjustable angle hot roller. The outer surface of the hot roller shell is ceramic. This roller is a high temperature roller. The roller size is (2×φ(190-250)×(350-450)mm). The temperature setting is 140-180℃. The yarn bundle is wound on the roller surface for 6.5 to 7.5 turns. The spinning speed is 1680m / min. After winding, it is transferred to the third pair of drafting hot rollers 18 among the three pairs of drafting hot rollers.

[0087] The third pair of drafting hot rollers 18 adopts an adjustable angle hot roller + adjustable angle hot roller. The outer surface of the hot roller shell is ceramic. The roller size is (2×φ(190-250)×(350-450)mm). This roller is a high temperature roller. The filament is wound on the roller surface for 6.5 to 7.5 turns. The temperature setting is 180-240℃, the spinning speed is 2520m / min, and after winding, it is conveyed to the tension guide plate 19, which is also an adjustment and relaxation guide plate. The guide plate can be moved and set. After winding, it is conveyed to the winding head.

[0088] The winding head has a winding speed of 2500 m / min, such as Figure 1 As shown in the diagram, the first winding head 20, the second winding head 21, the third winding head 22, and the fourth winding head 23 are not fixed in number and are determined according to actual production.

[0089] The bio-based composite monofilament spinning and winding device of this embodiment can obtain high-performance 10-50dpf bio-based polyamide XX and PLA composite spun fine denier (mother filament) monofilaments.

[0090] Example 5

[0091] Based on the bio-based composite monofilament spinning and winding device of Examples 1, 2, and 3, with the goal of spinning coarse denier, this example further explains the winding part of the device.

[0092] Please refer to Figure 7 and Figure 8 The bio-based composite monofilament spinning and winding device also includes a water bath 10, a blower mechanism 14, an oiling mechanism 18, a yarn guide 19, a feed roller and a yarn separating roller 20, four pairs of drawing hot rollers, a tension guide plate, and at least one winding head, arranged in sequence according to the process order and located after the ring blowing assembly 9.

[0093] In detail, the composite monofilaments after passing through the ring blower assembly 9 enter the water bath 10 for deep cooling. The water temperature is controlled by a PC and automatically adjusted based on sensor feedback. After deep cooling in the water bath, the composite spinning coarse denier yarn releases a large amount of heat, which the water bath 10 can fully absorb to achieve uniform deep cooling. Then, the yarn bundle passes through the blower assembly 14, which blows the coolant carried out of the water bath 10 down, and then enters the oiling mechanism 18, which can be in the form of an oil roller. After passing through the yarn guide 19, it is then conveyed to the feed roller and the yarn separating roller 20.

[0094] The feed roller and the splitting roller 20 are used in combination with a fixed cold roller φ(110-250)×400mm and an adjustable angle splitting roller (φ55-φ125)×400mm. The roller shell surface is chromium oxide + aluminum oxide. The filament bundle is wound 1 to 5 times on the roller surface without heating at a speed of 80-150m / min. After winding, it is conveyed to the first pair of four pairs of drawing hot rollers 21.

[0095] The first pair of drafting hot rollers 21 adopts an adjustable angle hot roller + adjustable angle hot roller. The outer surface of the hot roller shell is chromium oxide + aluminum oxide. The roller size is (2×φ(190-250)×(350-450)mm). This pair of rollers is a low temperature roller. The filament is wound on the roller surface for 6.5 to 7.5 turns. The temperature is set at 80-100℃ and the spinning speed is 160-300m / min. After winding, it is transferred to the second pair of drafting hot rollers 22 of the four pairs of drafting hot rollers.

[0096] The second pair of drafting hot rollers 22 adopts an adjustable angle hot roller + adjustable angle hot roller. The outer shell surface of the hot roller is ceramic. This roller is a high temperature roller. The roller size is (2×φ(190-250)×(350-450)mm). The temperature setting is 140-180℃. The yarn bundle is wound on the roller surface for 6.5 to 7.5 turns. The spinning speed is 240-450m / min. After winding, it is transferred to the third drafting hot roller 23 of the four pairs of drafting hot rollers.

[0097] The third pair of drafting hot rollers 23 adopts an adjustable angle hot roller + adjustable angle hot roller. The outer shell surface of the hot roller is ceramic. The roller size is (2×φ(190-250)×(350-450)mm). This roller is a high temperature roller. The filament is wound on the roller surface for 6.5 to 7.5 turns. The temperature is set at 180-240℃ and the spinning speed is 360-670m / min. After winding, it is transferred to the fourth drafting hot roller 24 of the four pairs of drafting hot rollers.

[0098] The fourth pair of drafting hot rollers 24 adopts an adjustable angle hot roller + adjustable angle hot roller. The outer shell surface of the hot roller is ceramic. The roller size is (2×φ(190-250)×(350-450)mm). This roller is a high temperature roller. The filament is wound on the roller surface for 6.5 to 7.5 turns. The temperature is set at 180-240℃ and the spinning speed is 400-1000m / min. After winding, it is conveyed to the tension guide plate.

[0099] Tension guide plate, ceramic surface, no heating, speed 400-1000m / min, such as Figure 7 As shown, the tension guide may include a tension fixing guide 25 and a tension lifting guide 26. The yarn bundle passes sequentially through the tension fixing guide 25 and the tension lifting guide 26, and after winding, it is conveyed to at least one winding head; as shown Figure 7 The tension lifting guide plate 26 shown is equipped with a guide plate lifting mechanism 27; as shown Figure 7 As shown, the tension guide plate is also equipped with another wire guide 28.

[0100] The winding speed of the winding head is 400-1000 m / min, and the quantity is determined by production requirements. Figure 7 The diagram shows four winding heads: the first winding head 29, the second winding head 30, the third winding head 31, and the fourth winding head 32.

[0101] Optionally, such as Figure 7 and Figure 8 As shown, at least one first guide wire disc is provided inside the water bath 10. Figure 7 and Figure 8 As shown in reference numerals 11 and 12, a bracket is fixedly connected to the outside of the water bath 10. The bracket is fixed with a second guide wire disc 13. The bracket also includes a water receiving tank 15, a first guide wheel 16, and a second guide wheel 17. The composite monofilament passing through the outer ring blower 9-3 passes sequentially through the first guide wire disc, the second guide wire disc 13, the first guide wheel 16, and the second guide wheel 17 until it reaches the oiling mechanism 18. The blower mechanism 14 is used to blow the coolant carried by the composite monofilament passing through the bracket into the water receiving tank 15. The water receiving tank 15 is located on the bottom side of the first guide wheel 16 and the second guide wheel 17.

[0102] The first guide wire disc is as follows Figure 7 As shown in reference numerals 11 and 12, a fixed speed can be maintained; the speed of the second guide disc 13 is faster than that of the first guide disc, for example, 1 m / min faster, which plays the role of pre-tensioning and ensures that the wire bundle does not slip.

[0103] The bio-based composite monofilament spinning and winding device of this embodiment can obtain high-performance 60-300dpf bio-based polyamide XX and PLA composite spun coarse denier (mother yarn) monofilaments.

[0104] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0105] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A bio-based composite monofilament spinning and winding device, characterized in that, The device includes: First extrusion press and second extrusion press; The spinning box includes a composite spinning assembly and a spinneret. The first extruder and the second extruder are respectively connected to the composite spinning assembly and are ejected through the spinneret in the form of composite monofilaments. Multiple sets of composite monofilaments are evenly spaced along a circular ring. A ring-blowing assembly includes a central ring blower, a central ring blower box, an outer ring blower, and an outer ring blower box. The central ring blower is vertically arranged in a vertical channel inside the central ring blower box, and its bottom end is connected to an air inlet. The central ring blower and the central ring blower box form an annular thread-passing channel. The outer ring blower box is connected to the bottom side of the central ring blower box, and the outer ring blower is vertically arranged inside the outer ring blower box. Its top end is connected to the bottom end of the annular thread-passing channel. The ring-blowing assembly includes a first air passage hole group disposed on the central ring blower to connect the central ring blower and the annular thread-passing channel, a second air passage hole group disposed on the central ring blower box to connect the annular thread-passing channel and the central ring blower box, and a third air passage hole group disposed on the outer ring blower to connect the outer ring blower box and the outer ring blower. The central ring blower box is provided with an annular rectifier perforated plate, which encloses and forms the internal vertical channel of the central ring blower box. The second air passage hole group is provided on the rectifier perforated plate, and the diameter of the second air passage hole group decreases sequentially from top to bottom. The diameter of the third air passage hole group increases sequentially from top to bottom.

2. The apparatus as claimed in claim 1, characterized in that, The central ring blower box is provided with a plurality of first rectifier plates. The first rectifier plates are inclined and their top ends are closer to the internal vertical channel of the central ring blower box than their bottom ends. The outer ring blower box is provided with multiple second rectifier plates, which are inclined and whose top end is offset from the outer ring blower box compared to the bottom end.

3. The apparatus as described in claim 1, characterized in that, The ring blowing assembly also includes a wind box lifting mechanism, the movable end of which is fixedly connected to the outer ring blowing box, and the wind box lifting mechanism drives the outer ring blowing box to move vertically.

4. The apparatus as claimed in claim 1, characterized in that, The device also includes a slow cooler, which is located between the spinning box and the ring blowing assembly.

5. The apparatus as claimed in claim 1, characterized in that, The first extruder is used to form a bio-based polyamide melt, and the first extruder includes: The first screw is set vertically; The first threaded sleeve is fitted over the first threaded rod; The first heat insulation cover is externally disposed on the first screw sleeve and connected to the first screw sleeve through the first support frame; The first raw material inlet section is inclined and connected to the high position of the first screw; The first vibrating screen is installed at the first raw material inlet section; A first screw motor is connected to the first screw via a first reducer; The first heating coil is disposed around the outside of the first screw sleeve and inside the first heat insulation cover; The second extruder is used to form a bio-based PLA melt, and the second extruder includes: The second screw is installed vertically; The second threaded sleeve is fitted over the first threaded rod; The second insulation cover is installed over the second screw sleeve; The second raw material inlet section is inclined and connected to the high position of the second screw; The second vibrating screen is installed at the second raw material inlet section; The second screw motor is connected to the second screw via a second reducer; The second heating coil is arranged around the outside of the second screw sleeve and inside the second heat insulation cover; The screw exhaust mechanism includes an on / off valve installed on the second screw sleeve. The on / off valve is used to open and close the exhaust port. The exhaust port is connected to a gas collection chamber. The gas collection chamber is located on the inner wall at the junction of the compression section and the metering section of the second screw. The second screw includes a feeding section, the compression section and the metering section arranged in sequence.

6. The apparatus as claimed in claim 1, characterized in that, The device also includes a passageway, one end of which is connected to the bottom end of the outer ring blower of the ring blowing assembly; The device further includes a first suction mechanism and a second suction mechanism, wherein the first suction mechanism is disposed between the ring blowing assembly and the channel, and the second suction mechanism is disposed at the bottom end of the channel.

7. The apparatus as claimed in claim 6, characterized in that, The device also includes an oiling mechanism, a yarn guide, a feed roller and a yarn separating roller, three pairs of drawing hot rollers, a tension guide plate and at least one winding head, arranged sequentially according to the process sequence and located after the passage.

8. The apparatus as claimed in claim 1, characterized in that, The device also includes a water bath, a blower mechanism, an oiling mechanism, a yarn guide, a feed roller and a yarn separating roller, four pairs of drawing hot rollers, a tension guide plate and at least one winding head, arranged sequentially in the process sequence and located after the ring blowing assembly.

9. The apparatus as claimed in claim 8, characterized in that, The water bath is provided with at least one first guide wire disc inside the tank. A bracket is fixedly connected to the outside of the water bath, and a second guide wire disc is fixed on the bracket. The bracket also includes a water receiving tank, a first guide wheel, and a second guide wheel. The composite monofilament passing through the outer ring blower passes sequentially through the first guide wire disc, the second guide wire disc, the first guide wheel, and the second guide wheel until it reaches the oiling mechanism. The blower is used to blow the coolant carried by the composite monofilament passing through the bracket into the water receiving tank. The water receiving tank is located on the bottom side of the first guide wheel and the second guide wheel.

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