Production device for small-hole-number super-coarse-denier monofilament

Abstract

The utility model discloses a production device for a small-hole-number super-coarse-denier single filament. The production device comprises a steel platform, a cooling mechanism, a pre-interlacer, a first hot roller, a second hot roller, a main interlacer and a winding machine, the first hot roller, the second hot roller and the main network device are arranged above the steel platform, and the winding machine is arranged below the steel platform. The steel platform is provided with an opening, a wire guide mechanism is arranged at the opening, and a winding wire guide hook is arranged above the winding machine; the wire guide mechanism comprises an installation plate fixedly installed at the opening and a movable wire guide hook installed on the installation plate in a sliding mode. The cooling mechanism comprises an air bellow and an extended air duct connected to the bottom of the air bellow. The main interlacer comprises a first filament inlet, an air inlet, two nozzles connected with the air inlet and a filament bundle channel located between the first filament inlet and the nozzles. According to the production device for the small-hole-number super-coarse-denier single filament, uniform cooling can be achieved, network points can be machined, the left side and the right side of FDY spinning cake forming are symmetrical, filament tripping is avoided, and the spinning speed is not affected.

Description

Technical Field

[0001] This specification relates to the field of spinning technology, and in particular to a production apparatus for ultra-coarse denier monofilaments with a low number of pores. Background Technology

[0002] Currently, among civilian chemical fiber filaments, for polyester FDY (Fully Drawn Yarn), a super coarse denier monofilament with a small number of pores, the monofilament fineness generally exceeds 16D, such as 200D / 12f. The monofilament fineness = 200 / 12 = 16.6. Twelve fiber monofilaments are combined to form a filament with a fineness of 200D. Due to its special rigidity and toughness, it is generally used to make home textiles, bag fabrics, tent fabrics, etc. If an irregular cross-section is added (such as flat, wavy flat, etc.), it can also be made into a stiff wool variety of fleece, which has a considerable product premium.

[0003] In principle, FDY with extra-thick monofilaments is difficult to cool evenly. Traditional ring-blown cooling has a short cooling zone distance, generally only about 50cm, which is sufficient for cooling ordinary civilian polyester fibers, such as 30D / 24f and 50D / 72f, where the monofilament is around 1D. However, for special varieties with monofilaments exceeding 16D, a longer cooling zone distance is required, and traditional ring-blown cooling equipment and processes cannot achieve uniform cooling. Although side-blown cooling can achieve a longer cooling distance, it is a unilateral airflow method, which cannot achieve uniform cooling for thick polyester FDY monofilaments. This results in faster cooling on the windward side and slower cooling on the leeward side, leading to differential cooling stress and unstable internal tension of the filament.

[0004] In reality, when FDY varieties with thick monofilaments pass through the main networker, the conventional networker is ineffective in increasing network entanglement points due to the low number of monofilaments. Conventional main networkers typically use a single-hole, single-sided vertical air blowing method. The filament bundle's path within the networker is insufficient to create a strong, vortex-like flow from the thin-hole, thick-denier monofilaments, resulting in very few network entanglement points. One to two network points per meter is the most common. For monofilaments with a fineness exceeding 16D, there are virtually no network points. Loose network points lead to filament tangling and looping during yarn cake formation, affecting subsequent use.

[0005] In the production of civilian polyester filament, when the filament bundle exits the hot roller and enters the main network, the width of the bundle after being shaped and wound on the hot roller is generally 5cm to 10cm. This width then expands to 40cm to 60cm on the main network. From the main network, it enters the winding machine, where the width from the inner spindle to the outer spindle is generally 120cm to 160cm. This determines that when the filament bundle enters the winding machine from the main network, only the middle spindle enters the machine guide hook at a vertical angle, while the spindles at both ends enter at an angle. After entering the machine guide hook at an angle, the filament bundle enters the traverse guide, where it is moved back and forth to lay the bundle flat on the paper tube.

[0006] In summary, common civilian filament production processes and equipment can no longer meet our needs for developing civilian filaments with higher differentiated specifications, such as the low-pore-count, ultra-coarse denier monofilaments with a single fiber fineness of 16D or higher that this invention aims to develop. Because of its special specifications—a single fiber fineness of 16D or higher—this type of filament is difficult to cool during production, difficult to bind together in the networker to form network entanglements, and difficult to achieve symmetrical and integral shaping during winding. The resulting filament cake formation is prone to severe tangling and asymmetrical front and back structures.

[0007] In the process of polyester filament production, the filament bundle is driven by a lateral guide, moving from one end of the filament cake to the other. This allows a single filament to be wound into a cake-shaped tube of a certain width by moving laterally on the paper tube. During this lateral movement at both ends, the filament bundle deviates from the normal winding track and becomes noticeably stuck to the end face of the tube, resulting in a straight line. This phenomenon is called "filament tripping." In the production of polyester filament, filament tripping causes the FDY end face filaments to become misaligned and deviate from the normal track, affecting subsequent weaving and unwinding, and even causing breakage. This should be avoided as much as possible. Utility Model Content

[0008] The inventors' research revealed that the formation of strands mainly involves three factors: equipment, raw materials, and processes, as described below:

[0009] 1. Equipment factors: The traverse guide's operating speed is unstable; when the traverse guide reciprocates to both ends of the yarn bundle, the tension is different; the contact pressure between the pressure roller and the yarn bundle is low.

[0010] 2. Raw material factors: If the monofilaments of the raw material are too thick, the cooling will be uneven, resulting in uneven stretching, large fluctuations in internal stress, and the filaments will jump on the transverse guide. If the monofilaments are too thick, the specific surface area of ​​the filaments will be small, the friction between the filaments will be small, and they will be relatively easy to slide. If the filament bundle has fewer monofilaments, the cohesion of the filament bundle will be poor, the filaments will be parallel and divergent, and the bundle will be poorly bundled. In high-speed winding, the filament bundles at the end face of the filament cake will be thrown out, which will also lead to the formation of tangled filaments.

[0011] 3. Process factors: Excessive winding angle and excessive machine speed can also cause thread tripping.

[0012] Currently, the following methods are generally used in terms of process and equipment to solve the problem of wire tripping:

[0013] In terms of process: 1. Use a large winding tension to ensure stable operation of the filament bundle on the traverse guide without jumping, that is, use tension to bind the filament bundle and make it move traversely stably; 2. Minimize the spinning speed. A low spinning speed can slow down the reciprocating traverse movement of the filament bundle on the traverse guide. When the filament bundle reaches one end of the yarn cake, the inertia of the change of direction is weakened, and the filament bundle will not be slipped off the surface of the yarn cake by inertia, causing filament tangling; 3. Use a smaller winding angle. A smaller winding angle can reduce the reciprocating speed of the traverse guide and reduce the inertial throwing of the filament bundle.

[0014] Equipment: The winding angle is produced using a "rabbit head" traverse guide wire, but the "rabbit head" traverse guide wire wears out quickly, and the reciprocating speed must also be low, otherwise the wire will also be tripped. Therefore, the machine speed is generally not too high, resulting in poor economic benefits.

[0015] In summary, FDY with coarse monofilament fineness has always had a serious problem with package forming. Moreover, the coarser the monofilament, the more strands are trapped on the side of the formed yarn cake. This is especially true for varieties with a monofilament fineness of 16D or higher. Whenever the problem of severe strand trapping is encountered in the development of new products, it is impossible to move forward, and the product differentiation and market application are limited.

[0016] In view of the shortcomings of the prior art, one object of this specification is to provide a production device for ultra-coarse denier monofilament with a small number of holes, which can achieve uniform cooling, process network dots, and form FDY yarn cakes that are symmetrical on both sides, without yarn tangling, and without affecting the spinning speed.

[0017] To achieve the above objectives, this specification provides a production apparatus for ultra-coarse denier monofilaments with low porosity, comprising: a steel platform and a cooling mechanism, a pre-networker, a first hot roller, a second hot roller, a main networker, and a winding machine arranged sequentially; the first hot roller, the second hot roller, and the main networker are disposed above the steel platform, and the winding machine is disposed below the steel platform;

[0018] The steel platform has an opening, and a wire guide mechanism is provided at the opening. A winding wire guide hook is provided above the winding machine. The wire guide mechanism includes: a mounting plate fixedly installed at the opening, and a movable wire guide hook slidably installed on the mounting plate. A sliding groove is provided on the mounting plate. A slider is fixedly connected to the movable wire guide hook, and the slider is disposed in the sliding groove. In a first direction, the size of the slider is smaller than the size of the sliding groove. The movable wire guide hook and the winding machine wire guide hook correspond one-to-one in the vertical direction.

[0019] The cooling mechanism includes a wind box and an extended air duct connected to the bottom of the wind box; multiple extended air ducts extend vertically; each extended air duct includes a straight section and an air outlet section arranged vertically, and the side wall of the air outlet section is provided with multiple through holes.

[0020] The main network device includes a first yarn inlet, an air inlet, two nozzles connected to the air inlet, and a yarn bundle channel located between the first yarn inlet and the nozzles; the air inlet and the first yarn inlet are arranged opposite to each other in a second direction; the nozzles are arranged towards the first yarn inlet in the second direction, and the orientation of the nozzles has a predetermined angle with the second direction; the two nozzles are oriented in opposite directions in the first direction; the first direction, the second direction, and the vertical direction are mutually perpendicular; the cross-sectional shape of the yarn bundle channel is composed of two symmetrical shapes, and the length of the yarn bundle channel in the first direction is greater than its length in the second direction; the two nozzles correspond to the two shapes respectively.

[0021] In a preferred embodiment, in the second direction, the first hot roller is located on one side of the second hot roller; in the vertical direction, the cooling mechanism is located above the pre-networker, the pre-networker is located above the first hot roller, and the main networker is located between the second hot roller and the opening.

[0022] In a preferred embodiment, a first comb-shaped guide is provided between the cooling mechanism and the pre-networker; a second comb-shaped guide and a deflection guide are provided between the pre-networker and the first hot roller, with the second comb-shaped guide disposed close to the pre-networker and the deflection guide disposed close to the first hot roller.

[0023] In a preferred embodiment, the movable guide wire hook includes a mounting portion and a guide wire portion; the mounting portion is linear and extends along a second direction and passes through the sliding groove; the guide wire portion is a notched annular shape; a plurality of the guide wire portions are located on the same side of the mounting plate in the second direction.

[0024] In a preferred embodiment, there are two mounting plates, located at opposite ends of the opening in the second direction; the guide wire portions of the movable guide wire hooks on the two mounting plates are arranged opposite each other; the two mounting plates and the movable guide wire hooks on the mounting plates are symmetrically arranged in the second direction.

[0025] In a preferred embodiment, the plurality of through holes are evenly distributed in the axial and circumferential directions; the diameter of the through holes is 0.3cm to 0.5cm; and the spacing between adjacent through holes is 0.5cm to 1.0cm.

[0026] In a preferred embodiment, the length of the extended air duct is 90cm to 110cm; the cold zone distance of the cooling mechanism is 130cm to 150cm.

[0027] In a preferred embodiment, the two nozzles are symmetrically arranged, and the axis of symmetry of the two nozzles extends along the second direction; the air inlet is connected to a compressed air port for introducing compressed air.

[0028] In a preferred embodiment, an air intake channel is provided between the air inlet and the nozzle, one end of each of the two air intake channels is connected to the air inlet, and the other end is connected to the two nozzles respectively; the two air intake channels are symmetrically arranged, and the axis of symmetry of the two air intake channels extends along the second direction; the included angle between the two air intake channels is an acute angle.

[0029] In a preferred embodiment, the cross-section of the filament channel is formed by the overlapping of two identical circular portions, the two circles being aligned in the first direction, and the distance between the centers of the two circles being greater than the radius of the circle and less than the diameter of the circle. Beneficial effects

[0030] The apparatus for producing ultra-coarse single fibers with low porosity provided in this embodiment has the following advantages:

[0031] 1. It can extend the cooling distance and achieve uniform cooling. Specifically, by setting an extension duct below the air box, the cooling distance can be extended. The extension duct includes a straight section and an air outlet section. The straight section is a sealed duct without holes, allowing the cooling air to continue cooling the filament bundle as it descends from the air box. The side wall of the air outlet section has multiple through holes for air outlet; the straight section is a duct that passes through the air outlet holes, extending cooling while increasing heat dissipation. This prevents the hot air from failing to diffuse around the filament bundle in time after heat exchange between the cooling air and the molten filament extruded by the spinneret. The extension duct provided in this embodiment, with its unique structure, not only extends the cooling distance but also prevents ambient wind from interfering with the filament bundle inside the duct. It acts like a turtleneck sweater for the filament bundle, stabilizing the tension of the filament bundle during cooling (because ultra-coarse denier monofilaments are few and have low spinning tension, they are easily disturbed by ambient wind and shake, leading to uneven extrusion molding), thus achieving uniform cooling.

[0032] 2. It can increase the number of network points for low-pore filaments. Specifically, by setting two parallel nozzles with a predetermined angle between the nozzles and the second direction, and with the two nozzles facing opposite directions in the first direction (i.e., the two nozzles have a certain degree of inclination), the traditional vertical blowing method can be changed. The cross-sectional shape of the filament channel in this application is also different from that of a general networker. The cross-section of the filament channel of a general networker is circular or triangular, while the cross-section of the filament channel provided in this application is composed of two symmetrical shapes, and the length of the filament channel in the first direction is greater than the length in the second direction. Under the dual-jet compressed air, the loose low-pore filaments on the left and right sides move in opposite directions to the two shapes, meet in the middle of the cross-section, collide and entangle, greatly increasing the probability of filament entanglement and intersection, increasing the probability of knots, and ultimately increasing network points. The low-pore filaments with more network points have better cohesion, and the filaments with knots increase the number of nodes for filament-to-filament contact, increasing the friction between filaments. After these two benefits, the occurrence of strand tripping and looping in subsequent winding will be reduced.

[0033] 3. This method enables the formation of FDY yarn cakes with low-pore-count, ultra-coarse denier monofilaments, ensuring symmetry on both sides and eliminating yarn tangling. Specifically, a mounting plate is fixedly installed at the opening of a steel platform. A movable guide hook is slidably mounted on the mounting plate, and a slider is fixedly connected to the movable guide hook. The slider can slide along a first direction within a sliding groove, thereby driving the movable guide hook to slide in the first direction. The position of the movable guide hook in the first direction is variable, guiding the yarn path into the winding machine at a set angle after a turn. This ensures that the angle of the yarn path on the winding guide hook remains consistent during the lateral movement of the yarn bundle. The movable guide hook can change the angle of the yarn bundle to be perpendicular to the winding guide hook, ensuring that the yarn bundle spindle position entering the winding machine is at the same vertical angle. This results in symmetrical formation of the FDY yarn cake on both sides, eliminating yarn tangling, and maintaining the conventional FDY spinning speed.

[0034] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the scope of the embodiments of the present invention is not limited thereto.

[0035] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0036] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of a filament bundle entering a winding machine through a winding guide in the prior art.

[0039] Figure 2 This is a side view of the filament entering the winding machine in the prior art;

[0040] Figure 3 This is a schematic diagram of the structure of a production device for ultra-coarse single fiber with few pores provided in this embodiment.

[0041] Figure 4 for Figure 3 Partial side view;

[0042] Figure 5 This is a schematic diagram of a cooling mechanism provided in this embodiment;

[0043] Figure 6 This is a schematic diagram of an extended ventilation duct provided in this embodiment.

[0044] Figure 7 This is a schematic diagram of the structure of a pre-networker provided in this embodiment;

[0045] Figure 8 for Figure 7 A partially enlarged structural diagram;

[0046] Figure 9 for Figure 8 A schematic diagram of the cross-sectional structure;

[0047] Figure 10 This is a schematic diagram of the structure of a main networker provided in this embodiment;

[0048] Figure 11 for Figure 10 A partially enlarged structural diagram;

[0049] Figure 12 for Figure 11 A schematic diagram of the cross-sectional structure;

[0050] Figure 13 This is a schematic diagram of the working principle of a main networker provided in this embodiment;

[0051] Figure 14This is a schematic diagram of the structure when the wire bundle enters the winding machine through the winding guide after using the wire guiding mechanism provided in this embodiment;

[0052] Figure 15 This is a schematic diagram of a wire guide mechanism provided in this embodiment;

[0053] Figure 16 for Figure 15 Top view.

[0054] Explanation of reference numerals in the attached figures:

[0055] 1. Steel platform; 11. Opening; 2. Cooling mechanism; 21. Air box; 22. Extended air duct; 221. Straight section; 222. Air outlet section; 2221. Through hole; 223. Connecting part; 2231. Screw hole; 3. Pre-networker; 31. First fixing plate; 32. Second wire inlet; 4. First hot roller; 5. Second hot roller; 6. Main networker; 61. First wire inlet; 62. Air inlet; 63. Nozzle; 64. Wire bundle channel; 65. Air inlet channel; 66. Compressed air inlet; 67. 7. Second fixed plate; 8. Winding machine; 9. Winding guide hook; 10. Guide mechanism; 11. Mounting plate; 12. Sliding groove; 13. Movable guide hook; 14. Mounting part; 15. Guide part; 16. Slider; 27. Fastener; 18. Lateral guide; 19. Wrapped yarn cake; 20. Pressure roller; 11. Oil nozzle; 12. First comb guide; 13. Second comb guide; 14. Deflection guide; 25. Yarn bundle; Y, First direction; X, Second direction; Z, Vertical direction. Detailed Implementation

[0056] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0057] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or may be interposed with another element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or may be interposed with another element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0059] The inventors discovered that in the existing technology, the filament bundles entering the two ends of the winding machine are at an angle. When the traverse guide moves the filaments at the angle to the left and right, it causes different tensions at the left and right ends of the filament cake. As a result, the filament cakes at the two ends of the winding machine are asymmetrically formed, making it easier for filaments to get stuck.

[0060] For ultra-coarse denier monofilaments with few holes, during the winding process, due to the small number of holes and coarse fineness, the contact area between the filaments is small and the friction points are few when the filament bundle is stacked on the paper tube. During high-speed winding, as the height of the stacked filament layers increases, the outer layer will gradually slip relative to the inner layer. If the tension of the stacked filaments on the left and right sides of the filament cake is different, it will cause asymmetry in the formation of the inner and outer sides of the filaments. This will affect the unwinding tension fluctuation of the filament cake during later processing, and in severe cases, it will cause filament breakage.

[0061] In conventional civilian spinning processes, the angle at which the yarn enters the winding machine 7 from above is different. Generally, the yarn bundle 20 comes down from the middle of the winding machine 7. Therefore, for the middle spindle of the winding machine 7, the yarn bundle 20 enters the winding guide hook 71 vertically, while for the spindles on both sides of the winding machine 7, the yarn bundle 20 enters at an inclined angle. Figure 2 As shown. After the yarn bundle 20 enters the winding guide hook 71 at an angle, it then enters the traversing guide 9. When the traversing guide 9 moves the yarn bundle 20 back and forth on its fork blades, when the yarn bundle 20 runs on the yarn cake to one side of the inclination angle, as... Figure 1 As shown on the left, the entire silk path forms an acute angle α1 at the winding guide hook 71, at which point the tension of the silk bundle 20 is high; as Figure 1 As shown on the right, when the filament bundle 20 on the winding guide hook 71 forms an obtuse angle α2, the tension of the filament bundle 20 is small; this causes the tension of the filament bundle 20 to be different on the left and right sides of the rolled filament cake 10, ultimately resulting in asymmetrical filament cake formation. Usually, this asymmetry will not affect the use of conventional filament cakes, but its impact on the coarse denier monofilament specification with fewer holes that this application aims to address is not negligible.

[0062] Please see Figures 3 to 16This application provides a production apparatus for ultra-coarse denier monofilaments with a low porosity, comprising: a steel platform 1 and a cooling mechanism 2, a pre-networker 3, a first hot roller 4, a second hot roller 5, a main networker 6, and a winding machine 7 arranged sequentially. The first hot roller 4, the second hot roller 5, and the main networker 6 are disposed above the steel platform 1, and the winding machine 7 is disposed below the steel platform 1.

[0063] like Figure 3 As shown, the steel platform 1 has an opening 11, and a wire guide mechanism 8 is installed at the opening 11. A winding guide hook 71 is installed above the winding machine 7. (As shown...) Figure 3 , Figure 15 and Figure 16 As shown, the wire guiding mechanism 8 includes: a mounting plate 81 fixedly installed at the opening 11, and a movable wire guide hook 82 slidably installed on the mounting plate 81. The mounting plate 81 has a sliding groove 811. A slider 83 is fixedly connected to the movable wire guide hook 82, and the slider 83 is disposed within the sliding groove 811. In the first direction Y, the size of the slider 83 is smaller than the size of the sliding groove 811, allowing the movable wire guide hook 82 to slide in the first direction Y. The movable wire guide hook 82 corresponds one-to-one with the wire guide hook of the winding machine 7 in the vertical direction Z. The wire bundle 20 passing through the second hot roller 5 and the main network device 6 sequentially passes through the movable wire guide hook 82 and the winding wire guide hook 71 before entering the winding machine 7. The wire bundle 20 passing through the movable wire guide hook 82 enters the winding wire guide hook 71 vertically.

[0064] A mounting plate 81 is fixedly installed at the opening 11 of the steel platform 1. A movable guide hook 82 is slidably installed on the mounting plate 81. The movable guide hook 82 is fixedly connected to a slider 83, which can slide in the sliding groove 811 along the first direction Y, thereby driving the movable guide hook 82 to slide in the first direction Y. The position of the movable guide hook 82 in the first direction Y is variable, so that the yarn entering the winding machine 7 is turned at a set angle and enters the winding machine 7, ensuring that the angle of the yarn on the winding guide hook 71 is consistent when the yarn bundle 20 moves horizontally left and right. The movable guide hook 82 can change the angle of the yarn bundle 20 to be perpendicular to the winding guide hook 71, ensuring that the spindle position of the yarn bundle 20 entering the winding machine 7 is the same vertical angle, so that the FDY yarn cake is symmetrical on both sides, without yarn tangling, and maintaining the conventional FDY spinning speed.

[0065] like Figure 5 and Figure 6As shown, the cooling mechanism 2 includes a blower box 21 and an extended air duct 22 connected to the bottom of the blower box 21. There are multiple extended air ducts 22, each corresponding to a wire bundle 20. The extended air ducts 22 are detachably connected to the bottom of the blower box 21. The multiple extended air ducts 22 extend in the vertical direction Z. Each extended air duct 22 includes a straight section 221 and an air outlet section 222 arranged vertically, with the straight section 221 located above the air outlet section 222. The sidewall of the air outlet section 222 has multiple through holes 2221. The multiple through holes 2221 are evenly distributed in the axial and circumferential directions.

[0066] By installing an extension duct 22 below the air box 21, the cooling distance can be extended. The extension duct 22 includes a vertically arranged straight section 221 and an air outlet section 222. The straight section 221 is a sealed duct without holes, allowing the cooling air to continue its extension from the air box 21 to further cool the filament bundle 20. The side wall of the air outlet section 222 has multiple through holes 2221 for air outlet; that is, the straight section 221 is a duct that passes through the air outlet holes, extending the cooling distance while increasing the heat dissipation effect, preventing the hot air from the molten filaments extruded by the spinneret from failing to diffuse around the filament bundle 20 in a timely manner after heat exchange between the cooling air and the molten filaments.

[0067] The extended air duct 22 provided in this embodiment, with its unique structure, can not only extend the cooling distance, but also prevent the ambient wind from interfering with the filament bundle 20 inside the air duct. It is like putting a turtleneck sweater on the filament bundle 20, which helps to stabilize the tension of the filament bundle 20 during cooling (because there are few ultra-coarse denier monofilaments, the spinning tension is small, and they are easily disturbed by the ambient wind and shake, resulting in uneven extrusion molding), thus achieving the purpose of uniform cooling.

[0068] like Figures 10 to 12 As shown, the main network device 6 includes a first yarn inlet 61, an air inlet 62, two nozzles 63 connected to the air inlet 62, and a yarn bundle channel 64 located between the first yarn inlet 61 and the nozzles 63. The air inlet 62 and the first yarn inlet 61 are arranged opposite to each other in the second direction X. The nozzles 63 are arranged towards the first yarn inlet 61 in the second direction X, and the orientation of the nozzles 63 has a predetermined angle with the second direction X. The two nozzles 63 are oriented in opposite directions in the first direction Y. Thus, the orientation of the two nozzles 63 has components in the second direction X and components in the first direction Y, and the components in the second direction X are oriented in the same direction, while the components in the first direction Y are oriented in opposite directions. The cross-sectional shape of the yarn bundle channel 64 is composed of two symmetrical shapes aligned in the first direction Y, and the length of the yarn bundle channel 64 in the first direction Y is greater than its length in the second direction X. The two nozzles 63 correspond to the two shapes respectively, and the gas ejected from the nozzles 63 gathers the yarn bundle 20 in the yarn bundle channel 64 towards the center of the yarn bundle channel 64.

[0069] Among them, the first direction Y, the second direction X, and the vertical direction Z are mutually perpendicular, and the first direction Y and the second direction X are two mutually perpendicular directions in the horizontal plane.

[0070] The main networker 6 can increase the number of network points with fewer apertures. By setting two parallel nozzles 63, with the nozzles 63 facing at a predetermined angle to the second direction X and the two nozzles 63 facing opposite directions in the first direction Y, i.e., the two nozzles 63 have a certain degree of inclination, the traditional vertical blowing method can be changed. The cross-sectional shape of the filament channel 64 in this application is also different from that of a general networker. The cross-section of the filament channel 64 of a general networker is circular or triangular, while the cross-section of the filament channel 64 of the networker provided in this application is composed of two symmetrical shapes, and the length of the filament channel 64 in the first direction Y is greater than the length in the second direction X. Under the dual-jet pressurized air, the loose filament bundles 20 with few holes move the single filaments on the left and right sides in opposite directions of the two shapes, meet in the middle of the cross-section, collide and entangle, which greatly increases the probability of single filament entanglement and intersection, increases the probability of knots, and ultimately increases the number of network points. The filament bundles 20 with knots have good cohesion, and the filament bundles 20 with knots increase the number of nodes where filaments contact each other, increasing the friction between filaments. After the two benefits are combined, the occurrence of strand tripping and looping in subsequent winding will be reduced.

[0071] like Figure 3 and Figure 4 As shown, in the second direction X, the first hot roller 4 is located to one side of the second hot roller 5. In the vertical direction Z, the cooling mechanism 2 is located above the pre-networker 3, which is located above the first hot roller 4, and the main networker 6 is located between the second hot roller 5 and the opening 11. This arrangement simplifies the travel path of the filament bundle 20 and reduces the probability of filament tripping during winding.

[0072] like Figure 3 As shown, a first comb-shaped guide 14 is provided between the cooling mechanism 2 and the pre-networker 3. An oil nozzle 13 is provided between the cooling mechanism 2 and the first comb-shaped guide 14 for oiling the cooled yarn bundle 20. A second comb-shaped guide 15 and a deflection guide 16 are provided between the pre-networker 3 and the first hot roller 4. The second comb-shaped guide 15 is located close to the pre-networker 3, and the deflection guide 16 is located close to the first hot roller 4.

[0073] In this embodiment, multiple sliding grooves 811 are arranged at intervals in the first direction Y, and multiple movable wire hooks 82 are slidably disposed within the multiple sliding grooves 811. The appropriate number of sliding grooves 811 and movable wire hooks 82 can be selected according to the required number of spindle positions. Preferably, the distance between two adjacent sliding grooves 811 is equal everywhere. Of course, in other embodiments, the distance between two adjacent sliding grooves 811 at different positions can be adjusted appropriately as needed.

[0074] like Figure 16 As shown, the movable guide hook 82 and the slider 83 are fixedly connected by a fastener 84. The fastener 84 can be a component that is easy to disassemble and install, such as a screw. Specifically, part of the fastener 84 protrudes from the top surface of the mounting plate 81, making it easy to identify the position of the movable guide hook 82.

[0075] In this embodiment, the movable wire guide hook 82 includes a mounting portion 821 and a wire guide portion 822. The mounting portion 821 is linear, extends along the second direction X, and passes through the sliding groove 811 to ensure a stable connection between the movable wire guide hook 82 and the mounting plate 81. The wire guide portion 822 is a notched annular shape, with the notch and central hole allowing the wire bundle 20 to pass through. Preferably, multiple wire guide portions 822 are located on the same side of the mounting plate 81 in the second direction X.

[0076] To improve production efficiency, such as Figure 3 As shown, there are two mounting plates 81, located at opposite ends of the opening 11 in the second direction X. The guide portions 822 of the movable wire guide hooks 82 on the two mounting plates 81 are arranged opposite to each other, and each mounting plate 81 corresponds to one winding machine 7, with the winding directions of the two winding machines 7 being opposite. Preferably, the two mounting plates 81 and the movable wire guide hooks 82 on the mounting plates 81 are symmetrically arranged in the second direction X.

[0077] In this embodiment, the diameter of the through hole 2221 is 0.3cm to 0.5cm, which allows for better heat dissipation. Preferably, the spacing between adjacent through holes 2221 is 0.5cm to 1.0cm, which extends the cooling time and increases the heat dissipation effect, allowing the hot air around the filament bundle 20 to be discharged in a timely manner, thus achieving uniform cooling.

[0078] like Figure 6 As shown, the top of the straight section 221 is provided with a connecting part 223. The outer diameter of the connecting part 223 is larger than the diameter of the straight section 221, thus facilitating the connection of the extension duct 22 to the bottom of the air box 21. The connecting part 223 is provided with multiple screw holes 2231. Preferably, there are three screw holes 2231, which can achieve a stable connection and facilitate quick installation and disassembly. Specifically, the multiple screw holes 2231 are evenly distributed in the circumferential direction. The connecting part 223 is fixedly connected to the bottom of the air box 21 by screws, with the screws passing through the screw holes 2231. The screws enable a detachable connection between the extension duct 22 and the bottom of the air box 21, facilitating installation and modification.

[0079] In this embodiment, the diameters of the straight section 221 and the air outlet section 222 are equal. The lengths of the straight section 221 and the air outlet section 222 in the vertical direction Z are equal. The only difference between the straight section 221 and the air outlet section 222 is whether or not a through hole 2221 is provided in the side wall. In other embodiments, the lengths of the straight section 221 and the air outlet section 222 in the vertical direction Z can be reasonably set according to cooling and heat dissipation requirements.

[0080] Specifically, the length of the extended air duct 22 is 90cm to 110cm. Because the cooling length of a conventional air box 21 is approximately 40cm to 50cm, the cooling mechanism 2 provided in this application, in order to achieve a cold zone distance of 130cm to 150cm (preferably approximately 140cm), sets the length of the extended air duct 22 to 90cm to 110cm. Further, the length of the extended air duct 22 is 100cm.

[0081] In this embodiment, the bellows 21 can be the bellows 21 in a conventional annular blowing cooling device, i.e., the bellows 21 in the prior art. This application will not provide further description of the bellows 21. The cooling mechanism 2 required in this application can be obtained by installing an extension duct 22 at the bottom of the bellows 21. An annular blowing filter element is provided in the bellows 21. After the spinneret extrudes the melt, it reaches the bellows 21. The annular blowing filter element is located in the bellows 21. The filament bundle 20 passes through the center of the annular blowing filter element and reaches the extension duct 22. After passing through the extension duct 22, the filament bundle 20 reaches the oil nozzle 13 for bundling and oiling, and then proceeds to the subsequent spinning process. The cooling mechanism 2 provided in this embodiment can solve the problems of short cooling airflow distance and insufficient cooling length in existing civilian yarn equipment, and solve the problem that existing processes cannot properly cool and produce coarse yarns with fewer holes above 16D. It can ensure sufficient cooling of FDY with fewer holes and ultra-coarse denier filaments.

[0082] In this embodiment, the two nozzles 63 are symmetrically arranged, and the axis of symmetry of the two nozzles 63 extends along the second direction X, so that air can be blown evenly on the filament bundle 20 from both sides.

[0083] like Figure 12 As shown, an air intake channel 65 is provided between the air inlet 62 and the nozzle 63. One end of each air intake channel 65 is connected to the air inlet 62, and the other end is connected to the two nozzles 63 respectively. Specifically, the two air intake channels 65 are symmetrically arranged, and the axis of symmetry of the two air intake channels 65 extends along the second direction X. Preferably, the included angle between the two air intake channels 65 is an acute angle, which can minimize the distance between the nozzle 63 and the air inlet 62 and reduce the loss of compressed air in the path.

[0084] In this embodiment, the air inlet 62 is connected to a compressed air inlet 66 for introducing compressed air. Although this application provides two nozzles 63, only one compressed air inlet 66 is needed, which saves space in terms of structure and reduces the need for consumable parts.

[0085] like Figure 13 As shown, the cross-section of the filament channel 64 can be formed by overlapping two circular parts of the same size. The two circles are aligned in the first direction Y, and the distance between the centers of the two circles is greater than the radius of the circle and less than the diameter of the circle. Figure 13 The arrows in the diagram indicate the direction of compressed air flow.

[0086] Specifically, nozzle 63 is located at the end of the circle furthest from the inlet in the second direction X. Under the pressure of the dual-jet air jet, the loose, low-pore filament bundle 20 moves the single filaments on the left and right sides in opposite directions to the two circles, meeting and colliding in the middle of the two circles, greatly increasing the probability of single filament entanglement and intersection, increasing the probability of knots, and ultimately increasing the number of network points.

[0087] Preferably, the yarn inlet is located at the center of the network device in the first direction Y. The air inlet 62 is also located at the center of the network device in the first direction Y.

[0088] Overall, the novel networker of this application is significantly different from the networkers used in conventional civilian filament production processes, and can solve the problem of loose filament bundles without network points when existing equipment produces coarse polyester FDY monofilaments.

[0089] In this embodiment, the steel platform 1, the first hot roller 4, the second hot roller 5, the pre-networker 3, the winding machine 7, and the winding guide hook 71 can all be conventional structures, which will not be described in detail here. A pressure roller 12 may also be provided above the winding machine 7. For example... Figures 7 to 9 As shown, the pre-networker 3 is fixedly installed via the first fixing plate 31. The pre-networker 3 is provided with a second wire inlet 32 ​​and a compressed air inlet 66 on the side, from which compressed air is output radially. Figure 10 As shown, the main network device 6 is fixedly installed via the second fixing plate 67.

[0090] In a specific application scenario, after the spinneret extrudes the melt, it reaches the air box 21. The air box 21 contains a ring-blown filter element. The filament bundle 20 passes through the center of the filter element and reaches the extended air duct 22 at the bottom of the air box 21. After passing through the extended air duct 22, the filament bundle 20 reaches the oil nozzle 13 for bundling and oiling, and then reaches the first comb guide 14. After combing and separating the filaments, it enters the pre-networker 3. The oiled filament bundle 20 is blown by compressed air under a certain pressure to form a more stable winding filament bundle 20, which increases the cohesion of the filament bundle 20 and improves the uniform adhesion of the oil on the surface of the filament bundle 20, thus stabilizing the tension for subsequent stretching on the hot roller. After exiting the pre-networker 3, the filament bundle 20 passes through the second comb guide 15 and then the deflection guide 16 in front of the first hot roller 4. The angle of the filament bundle 20 is rotated by 90 degrees, and it is smoothly attached to the first hot roller 4 for heating after 5-6 turns around the roller. The heated filament bundle 20 then enters the second hot roller 5 for stretching and shaping after 5-6 turns around the roller. After being shaped, the filament bundle 20 passes through the main networker 6, where it is wound and dotted before entering the movable guide hook 82 located on the steel platform 1. It then enters the winding guide hook 71 above the winding machine 7. After entering the winding guide hook 71, the filament bundle 20 is traversed and pulled by the rotary blade-type transverse guide 9, which lays the filament flat on the paper tube. For example... Figure 14 As shown, the transverse guide 9 is formed by stacking two swivel assemblies. The two swivel assemblies run in opposite directions. When the upper swivel assembly moves the filament bundle 20 from one side to the other side around the forming arc plate, the lower swivel assembly moves the filament bundle 20 back from the opposite direction.

[0091] It should be noted that in the description of this specification, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this specification, unless otherwise stated, "a plurality of" means two or more.

[0092] Any numerical values ​​cited herein include all values ​​ranging from a lower limit to an upper limit, increasing by one unit, with at least two units between any lower and any higher value. For example, if the quantity of a component or the value of a process variable (e.g., temperature, pressure, time, etc.) is described as being from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in this specification. For values ​​less than 1, a unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1, etc. These are merely examples intended for explicit expression, and it can be assumed that all possible combinations of values ​​listed between the minimum and maximum values ​​are explicitly described in this specification in a similar manner.

[0093] Unless otherwise stated, all ranges include the endpoints and all numbers between them. The terms "approximately" or "about" used with ranges apply to both endpoints of the range. Thus, "approximately 20 to 30" is intended to cover "approximately 20 to approximately 30," including at least the specified endpoints.

[0094] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified elements, components, parts, or steps, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute included by “may” is optional.

[0095] Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The use of the word "a" or "an" to describe an element, component, part, or step does not imply the exclusion of other elements, components, parts, or steps.

[0096] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the appended claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the inventors have not considered that subject matter as part of the disclosed utility model subject matter.

Claims

1. An apparatus for producing a few-holed ultra-coarse denier monofilament, characterized by comprising: include: The steel platform includes a cooling mechanism, a pre-networker, a first hot roller, a second hot roller, a main networker, and a winding machine arranged sequentially. The first hot roller, the second hot roller, and the main networker are located above the steel platform, and the winding machine is located below the steel platform. The steel platform has an opening, and a wire guide mechanism is provided at the opening. A winding wire guide hook is provided above the winding machine. The wire guide mechanism includes: a mounting plate fixedly installed at the opening, and a movable wire guide hook slidably installed on the mounting plate. A sliding groove is provided on the mounting plate. A slider is fixedly connected to the movable wire guide hook, and the slider is disposed in the sliding groove. In a first direction, the size of the slider is smaller than the size of the sliding groove. The movable wire guide hook and the winding machine wire guide hook correspond one-to-one in the vertical direction. The cooling mechanism includes a wind box and an extended air duct connected to the bottom of the wind box; multiple extended air ducts extend vertically; each extended air duct includes a straight section and an air outlet section arranged vertically, and the side wall of the air outlet section is provided with multiple through holes. The main network device includes a first yarn inlet, an air inlet, two nozzles connected to the air inlet, and a yarn bundle channel located between the first yarn inlet and the nozzles; the air inlet and the first yarn inlet are arranged opposite to each other in a second direction; the nozzles are arranged towards the first yarn inlet in the second direction, and the orientation of the nozzles has a predetermined angle with the second direction; the two nozzles are oriented in opposite directions in the first direction; the first direction, the second direction, and the vertical direction are mutually perpendicular; the cross-sectional shape of the yarn bundle channel is composed of two symmetrical shapes, and the length of the yarn bundle channel in the first direction is greater than its length in the second direction; the two nozzles correspond to the two shapes respectively.

2. The apparatus for producing a few-holed ultra-coarse denier monofilament according to claim 1, wherein In the second direction, the first hot roller is located on one side of the second hot roller; in the vertical direction, the cooling mechanism is located above the pre-networker, the pre-networker is located above the first hot roller, and the main networker is located between the second hot roller and the opening.

3. The apparatus for producing a few-holed ultra-coarse denier monofilament according to claim 2, wherein A first comb-shaped guide is provided between the cooling mechanism and the pre-networker; a second comb-shaped guide and a deflection guide are provided between the pre-networker and the first hot roller, with the second comb-shaped guide positioned close to the pre-networker and the deflection guide positioned close to the first hot roller.

4. The apparatus for producing a few-holed ultra-coarse denier monofilament according to claim 1, wherein The movable guide wire hook includes a mounting part and a guide wire part; the mounting part is linear and extends along a second direction and passes through the sliding groove; the guide wire part is a notched annular shape; a plurality of the guide wire parts are located on the same side of the mounting plate in the second direction.

5. The production apparatus for low-pore-count, ultra-coarse denier monofilaments according to claim 4, characterized in that, There are two mounting plates, located at opposite ends of the opening in the second direction; the guide wire portions of the movable guide wire hooks on the two mounting plates are arranged opposite each other; the two mounting plates and the movable guide wire hooks on the mounting plates are symmetrically arranged in the second direction.

6. The apparatus for producing a few-holed ultra-coarse denier monofilament according to claim 1, wherein The multiple through holes are evenly distributed in the axial and circumferential directions; the diameter of the through holes is 0.3cm to 0.5cm; the spacing between adjacent through holes is 0.5cm to 1.0cm.

7. The apparatus according to claim 1, wherein the number of the ultra coarse denier filaments is less than 1000. The length of the extended air duct is 90cm to 110cm; the distance between the cold zones of the cooling mechanism is 130cm to 150cm.

8. The apparatus according to claim 1, wherein The two nozzles are symmetrically arranged, and the axis of symmetry of the two nozzles extends along the second direction; the air inlet is connected to a compressed air port for introducing compressed air.

9. The apparatus according to claim 1, wherein the number of the ultra coarse denier filaments is less than 10. An air intake channel is provided between the air inlet and the nozzle. One end of each of the two air intake channels is connected to the air inlet, and the other end is connected to the two nozzles respectively. The two air intake channels are symmetrically arranged, and the axis of symmetry of the two air intake channels extends along the second direction. The included angle between the two air intake channels is an acute angle.

10. The apparatus for producing a few-holed ultra-coarse denier monofilament according to claim 1, wherein The cross-section of the filament channel is formed by the overlapping of two circular portions of the same size. The two circles are aligned in the first direction, and the distance between the centers of the two circles is greater than the radius of the circle and less than the diameter of the circle.

Images