457results about "Artificial thread manufacturing machines" patented technology

The invention relates to the field of regenerated fiber production equipment manufacturing and process integration, and discloses a modular intelligent continuous regenerated fiber production line which comprises a sorting and cleaning module, a melt extrusion module, an impurity filtering module, a granulation module, a decoloration module, a solid phase polycondensation tackifying module and a melt spinning module. The self-adaptive material distribution device is used for realizing material connection among the modules; the automatic control system is used for realizing collaborative operation of all the modules; wherein the solid phase polycondensation tackifying module is provided with an intelligent control unit for dynamically optimizing the operation of the solid phase polycondensation tackifying module. Compared with the prior art that each process is relatively independent and depends on manual scheduling or simple linkage, the scheme effectively overcomes the common problems of unsmooth material conveying, unbalanced matching between modules and insufficient automation degree in the traditional regeneration process, and remarkably improves the production continuity and the resource utilization rate.

The invention discloses a melt spinning cooling system which comprises a spinning box, a cooling cylinder section, a first heating assembly, a second heating unit and a recovery part, the first heating assembly outputs trace hot nitrogen, anti-oxidation protection of melt trickles is achieved, the oxidation risk possibly caused by direct contact of a traditional cooling medium is avoided, and the cooling efficiency is improved. Meanwhile, the second heating unit is matched to regulate and control the temperature of the cooling cylinder section, so that the whole-process temperature accurate control from oxidation prevention to high-temperature natural cooling and the high-temperature natural cooling and cold air supply-free operation process are realized, and the solidification orientation length and process of the melt trickle can be actively lengthened by combining gradient process temperature control; different from the defect of insufficient orientation caused by too fast cooling in the prior art, key conditions are provided for optimization of a fiber orientation structure; due to the coaxially stacked cooling cylinder sections and nitrogen recovery operation, a stable cooling environment is constructed, fiber shaking is avoided, the nitrogen utilization rate and the environmental safety are improved, and the process stability and economical efficiency are balanced.

The invention discloses a continuous spinning path coordination system based on real-time tension regulation and control, relates to the technical field of spinning tension control, and is used for solving the problem of poor continuous path tension coordination regulation. The method comprises a path modeling module, a state acquisition module, a coordination control module and a strategy optimization module, and comprises the following steps: establishing a path structure model from spinning to winding, planning tension measuring points, generating state vectors, identifying drafting section disturbance, winding section disturbance and local friction disturbance, and predicting the tension change of each path node in combination with a tension conduction time delay parameter; a control combination is generated among a drafting drive unit, a winding drive unit, a tensioning unit and a belt drive yarn guide component, cooperative adjustment of an execution unit is achieved, a strategy optimization module establishes a statistical relation between tension and quality based on end breakage and quality detection results, a tension target interval is updated in a self-adaptive mode, and the execution unit adjusts constraints and priorities. The end breakage rate is reduced, and the stability and the product consistency are improved.

The invention relates to a bi-component fiber and a preparation method thereof, polyester melt and polyamide melt are extruded from a spinneret plate side by side, cross air blowing cooling is performed to obtain nascent fiber, and then the nascent fiber is sequentially subjected to heat pipe heating, oiling, pre-interlacing, three-roller drafting heat setting and winding to obtain the bi-component fiber. The heat pipe is used for heating nascent fibers, and the temperature of the heat pipe is 90-100 DEG C; the three rollers comprise a first hot roller, a second hot roller and a third hot roller; the temperature of the first hot roller is 70-90 DEG C, the temperature of the second hot roller is 110-130 DEG C, and the temperature of the third hot roller is 140-160 DEG C; the filament number of the prepared bi-component fiber is 2.6-3.5 dtex, the breaking strength is larger than or equal to 3.23 cN / dtex, the elongation at break is 27.45-38.31%, the number of broken ends is smaller than or equal to 2.3 times / (48 bits. 24 hours), and the broken filament rate is stably controlled to be 0.30% or below. According to the preparation method, generation of internal stress is greatly reduced; the mechanical property of the bi-component fiber is improved, and the number of broken ends and the broken filament rate of the fiber are obviously reduced.

The utility model discloses a spinning window convenient to mount and use, which relates to the technical field of spinning windows and comprises a mounting plate, a spinning machine and a quick mounting mechanism. The mounting plate is rotationally arranged at the front end of the spinning machine, sliding supports are fixedly arranged on the two sides of the mounting plate, a window body is arranged at the front end of the mounting plate, and a quick mounting mechanism used for quickly mounting the window body is fixedly arranged at the front end of the window body. Preliminary installation is achieved through matched insertion of the guide rod and the sliding groove and positioning of the positioning rod and the positioning groove, separation and reunion of the limiting protrusion and the limiting teeth are controlled through the pressing block, the position of the guide rod is adjusted, finally, the limiting protrusion clamps the limiting teeth through the reset spring to complete installation, the installation process is simple and convenient, different installation requirements can be met, and the installation quality is guaranteed. The mounting efficiency is improved.

The utility model relates to the technical field of melt spinning, in particular to PBT elastic fiber melt spinning equipment which comprises a machine body, a melt extruder installed on the surface of the machine body, a feeding port formed in the melt extruder, a spinning nozzle arranged on the inner wall of the machine body, a cold air chamber arranged on the inner wall of the machine body, and an auxiliary shaft and a collecting shaft arranged on the surface of the machine body. The surface of the machine body is provided with a channel, the surface of the feed port is provided with an auxiliary device, and the auxiliary device comprises a box body fixed on the surface of the feed port. By arranging the auxiliary device, during feeding, the intercepting net can intercept larger raw materials, and the driving part is matched with the two crushing rollers to crush the raw materials in the crushing chamber; and then the raw materials enter the feeding opening through the material guide pipe to be discharged, so that all the raw materials entering the melt extruder are not too large, the raw materials can be molten more sufficiently and more uniformly during heating and melting, a good melt foundation is provided for high-quality spinning, and the overall practicability is improved.

The invention relates to the technical field of polyester slub yarns, and discloses a preparation method and device of a gradually-changed section shrinkage polyester slub yarn, and the device comprises a metering pump, a spinneret plate, an oiling device, a first hot roller, a second hot roller, a winding device, a hot roller motor, a programmable controller and a motor frequency converter; the metering pump is installed on the upper portion of the spinneret plate, the spinneret plate, the oiling device, the first hot roller, the second hot roller and the winding device are sequentially arranged along a filament conveying path, the first hot roller and the second hot roller are driven by a hot roller motor to rotate, the first hot roller is provided with a heating module used for adjusting the temperature, and the second hot roller is provided with a heating module used for adjusting the temperature. A hot roller motor of one hot roller is electrically connected with the motor frequency converter; and the motor frequency converter is in signal connection with the programmable controller. The method and the device for preparing the gradually-changed section-shrunk polyester slub yarn have the advantages that the production continuity and stability can be ensured through variable temperature and variable speed of the first hot roller and constant speed of the second hot roller and the winding head, and the like.

The utility model discloses spinning forming equipment based on colored noctilucent pre-oriented yarn, which relates to the technical field of spinning forming equipment and comprises a screw extruder, a stirring mechanism is arranged on the left side of the screw extruder, and a filtering mechanism is arranged between the screw extruder and the stirring mechanism and used for filtering melt. The filtering mechanism comprises a multi-stage filtering unit and a backwashing unit, the multi-stage filtering unit is arranged above the stirring mechanism and comprises a filtering barrel, the multi-stage gradient filtering unit is arranged, a nested filtering net structure is adopted in the filtering barrel, and the aperture of a first filtering net barrel is smaller than that of a second filtering net barrel, so that graded fine filtering of the melt is realized. Agglomerated particles and impurities formed by noctilucent pigment or fluorescent dye in melt can be effectively intercepted, and the blocking risk of the spinneret plate is remarkably reduced. Meanwhile, the filter screen cylinder is detachably installed through the first clamping groove and the second clamping groove, maintenance and replacement are convenient, and it is ensured that the filtering effect is continuous and stable.

The invention discloses a polyetherketoneketone fiber anti-adhesion porous spinning method. The method comprises the following steps: dissolving polyetherketoneketone to obtain a spinning solution, and extruding the spinning solution through a porous spinneret plate to form a plurality of spinning trickles; the trickles enter a first coagulating bath to be preliminarily coagulated and formed, and fibers are obtained; dividing the fibers by a split type dividing plate, guiding the fibers into a second coagulating bath by a godet, washing with water, applying oil, and then drying; fibers enter the hot drafting device to be subjected to multi-stage hot drafting, and after heat setting, the fibers are tidied and wound by the buncher. The first coagulating bath is provided with a bath lotion supplementing unit, a circulating filtering system and an ultrasonic generator which are combined to quickly and uniformly update components of the coagulating bath; and the split type filament separating plate keeps a distance between fibers, prevents mutual adhesion and improves the double-diffusion efficiency in the second coagulating bath. The ultrasonic-assisted circulating filtration system is used for updating the synergistic effect of the coagulating bath and the split type filament separating plate, so that the problems that fibers are easy to adhere and are uneven in evenness and performance are effectively solved.

The application discloses a method for preparing silicon carbide ceramic fibers by combining sol-gel and dry spinning. The method comprises the following steps: 1) after preparing a second silicon-based sol, a spinning aid is added to prepare a spinnable silicon-based sol; 2) the spinnable silicon-based sol is prepared into fiber filaments by using a dry spinning process; 3) the fiber filaments are cracked into silicon-carbon-oxygen fibers; and 4) the silicon-carbon-oxygen fibers are sintered into silicon carbide ceramic fibers. The method is different from a mainstream polycarbosilane precursor method for preparing silicon carbide ceramic fibers, does not need a non-melting treatment process, has the advantages of adjustable composition, low raw material cost and simple process and the like, and has important significance for low-cost preparation of silicon carbide ceramic fibers.

The invention relates to the technical field of drawing machines, and discloses a textile processing chemical fiber drying drawing machine which comprises a cooling box, a rotating mechanism is arranged on the cooling box, the rotating mechanism comprises an annular rotating box arranged in the cooling box, and limiting annular grooves are formed in the front face and the back face of the annular rotating box correspondingly; and two L-shaped limiting rods are fixedly installed on the inner wall of the left side and the inner wall of the right side of the cooling box correspondingly, the ends, close to each other, of the multiple L-shaped limiting rods extend into the two limiting annular grooves correspondingly and are matched with the two limiting annular grooves correspondingly, and a plurality of drainage holes are formed in the outer wall of the annular rotating box. The rectangular limiting rod can drive the fixing plate with the holes to rotate, the fixing plate with the holes can drive the water absorption sponge to rotate, centrifugal force can be generated in the rotating process of the water absorption sponge, and the centrifugal force can throw out water adsorbed on the water absorption sponge, so that the continuous water absorption function of the water absorption sponge is kept.

The high-elasticity semi-dull POY polyester fiber spinning equipment comprises a crane, an equipment body, a power piece, a silk yarn, a limiting piece, a winding rod, a worm, a worm wheel, a rotating plate, a moving block, an abutting plate, a switching plate, a threaded rod and a movable plate, the power piece is started to drive the winding rod to rotate, and under the action of the limiting piece, the winding rod is driven to rotate by the rotating plate. The worm, the worm gear and the movable plate are driven to reciprocate, so that the silk yarn is uniformly wound on the winding rod, the worm and the worm gear rotate on the movable block, the threaded rod synchronously doing reciprocating motion rotates at small angles at intervals, the movable plate moves away from the winding rod at intervals, and the situation that the winding thickness of the silk yarn on the winding rod is gradually increased is avoided. The wound silk yarn is in contact with the movable plate; and the pressing plate reciprocates to press the silk thread, so that on one hand, the reciprocating motion of the movable plate is ensured, the silk thread is uniformly wound, and on the other hand, the winding angle of the silk thread on the winding rod is further ensured.

The utility model relates to the technical field of spinning production, in particular to a filter screen filtering device for spinning production, which comprises a support, a positioning plate and a filter element plate, the support is integrally of an I-shaped structure, lateral through grooves are formed in transverse rods on two sides of the support, the positioning plate is mounted on the outer side of the middle of the support, and the filter element plate is mounted on the positioning plate. Side clamping plates are arranged at the upper end and the lower end of the positioning plate, limiting plates are clamped to the inner sides of the side clamping plates, extension plates are arranged on the sides, close to the positioning plate, of the limiting plates, filter element plates are clamped to the inner sides of the extension plates, embedding grooves are formed in the upper end and the lower end of each limiting plate, and the embedding grooves and the side clamping plates are mutually embedded; the problems that in the prior art, when a filter screen filtering device is used for filtering a spinning production environment, a filter element mode is adopted, dust generated in the production process is adsorbed, due to the fact that the phenomenon of filament flying easily occurs in the spinning process, filament flying can be attached to the surface of the filter element, dust cannot enter the filter element, and the filtering and absorbing effect is affected are solved.

The utility model discloses a condensation tank device for chemical fiber spinning, which is mounted at the highest position of a heating system of chemical fiber spinning equipment and comprises a tank support, a condensation tank mounted on the tank support in a suspended manner, and a pressure gauge and a platinum resistor which are mounted on the condensation tank, the condensation tank comprises a first plug, a tank body and a second plug which are coaxially arranged from top to bottom, the first plug and the second plug are connected to the upper end and the lower end of the tank body respectively and form a condensation space with the tank body, an air inlet pipe is connected to the tank body in an inserted mode, an exhaust pipe is connected to the first plug in an inserted mode, and a backflow pipe is connected to the second plug in an inserted mode; the pressure gauge is mounted on the first plug, avoids the exhaust pipe and is used for measuring the pressure in the condensation tank; the platinum resistor is mounted on the second plug and is used for measuring the temperature in the condensation tank; the heating system of the chemical fiber spinning equipment is subjected to temperature monitoring and pressure monitoring, pressure fluctuation is buffered, and the operation stability is improved.

The embodiment of the utility model provides a device for preventing yarn jumping of an oil nozzle and spinning equipment. The device for preventing the wire jumping of the oil nozzle comprises a wire separator which is of a comb-shaped structure and is used for separating the wire entering the device for preventing the wire jumping of the oil nozzle; the oil nozzle is located on the first direction side of the yarn separator, at least one first yarn guide groove is formed in the oil nozzle, and the yarn is oiled in the first yarn guide groove; the wire jumping prevention part is located on the first direction side of the oil nozzle, the wire jumping prevention part is provided with a second wire guide groove, and the tail of the wire jumping prevention part is of a comb-shaped structure with a barb; wherein the first direction is the direction in which the silk thread enters the first silk guide groove. Therefore, the yarn jumping problem of the oil nozzle is avoided, the waste yarn rate is reduced, and the quality of finished yarn is guaranteed.

The utility model relates to the technical field of chemical fiber production equipment, in particular to a feeding machine doffing protection structure which comprises a feeding machine body and a channel arranged on a floor plate in a penetrating mode, the outer side wall of the feeding machine body is provided with a protection cover arranged on a feeding wheel in a covering mode, and the top wall and the bottom wall of the protection cover are each provided with a tow penetrating opening in a penetrating mode, a protective fence surrounding the channel is arranged between the feeding machine body and the floor plate, and the upper end face of the protective fence abuts against the lower end face of the protective cover. The protective cover and the protective enclosure are additionally arranged, the protective cover covers the feeding wheel, so that the feeding wheel is arranged in a hidden mode, production safety is effectively improved, the possibility that the feeding wheel is polluted is reduced, the protective enclosure encloses the channel, and the upper end face of the protective enclosure abuts against the lower end face of the protective cover. Other impurities are effectively prevented from flying into the tow containing barrel from the feeding port of the channel, and the possibility that tows are polluted is reduced.

The utility model discloses a draw-off godet housing device which is provided with a draw-off godet, a control panel, a yarn suction and cutting device and a pre-interlacer supporting frame, and the draw-off godet housing device comprises a housing body, a first mounting seat and a second mounting seat, and the first mounting seat and the second mounting seat are mounted on the housing body. The housing body is provided with a profiling groove for mounting a yarn guide disc, a first mounting hole for mounting the control panel, a second mounting hole for mounting a yarn suction and cutting device and a third mounting hole for mounting a pre-stitching device supporting frame, the first mounting seat is arranged at the first mounting hole, the control panel is matched with the first mounting seat, and the second mounting seat is matched with the third mounting hole. The second mounting seat is arranged at the second mounting hole, and the suction shredding device is matched with the second mounting seat; an open opening is formed in the front portion of the housing body, the profiling groove penetrates through the pair of side wall faces in the left-right direction, and a groove opening of the profiling groove coincides with at least part of the opening. The third mounting hole is located on the upper side of the profiling groove, and the second mounting hole is located on the upper side of the third mounting hole.

The invention discloses a biphenyl furnace, and belongs to the technical field of biphenyl furnaces. Comprising a biphenyl furnace body, a dual-mode waste heat feedback mechanism and an enhanced heating assembly. A U-shaped heating tube bundle is arranged in the bottom of the biphenyl furnace body; the dual-mode waste heat feedback mechanism is connected with the heating medium outlet and distributes the heating medium through the flow distribution valve group; the intensified heating assembly comprises a heating jacket attached to the bottom of the furnace barrel. According to the biphenyl furnace, the heat medium which is not completely cooled is introduced into the heating jacket or the external heat energy recovery device through the flow distribution valve group, sensible heat is recovered, meanwhile, stepped auxiliary heating is conducted on the dead zone of the furnace bottom, a cold flow layer is eliminated, and the temperature rising rate is increased. Besides, the heating jacket is fixed by adopting an elastic anchoring structure with built-in guide and external suspension, and thermal expansion displacement is compensated by utilizing the pre-tightening force of a spring, so that the problem of stripping failure of a bottom thermal insulation layer is effectively solved, and double improvement of deep utilization of energy and safe operation of equipment is realized.

An object of the present invention is to improve the efficiency in transferring heat from a heated box to a spinning pack, regardless of the size of a gap between the heated box and the spinning pack. A melt spinning device 1 includes: a cylindrical spinning pack 2 including a spinneret 21; a heated box 3 including a concave portion 32 having the internal space into which the spinning pack 2 is inserted; and a heat-transmission mechanism 4 which is positioned at a gap between the wall surface defining the concave portion 32 and the surface of the spinning pack 2 when the spinning pack 2 is inserted into the concave portion 32. The concave portion 32 is open downward. The heat-transmission mechanism 4 includes plate springs 41 in each of which the shape is elastically valuable in accordance with the size of the gap. When the spinning pack 2 is inserted into the concave portion 32, each plate spring 41 forms a heat conduction path which reaches the surface of the spinning pack 2 from the wall surface defining the concave portion 32 in the heated box 3.

To improve operation efficiency.SOLUTION: The image forming apparatus includes a duct 31, a plurality of cooler units 33 disposed side by side along the extending direction of the duct 31, a sucking device 32 connected to one end of the duct 31 and capable of sucking air in a space Sa in the duct, and a filter 34 configured to allow the air sucked into a sucking port 32a of the sucking device 32 to pass through. The duct space Sa is connected to the yarn running spaces Sb formed in each cooling unit 33 in the direction orthogonal to the extending direction of the duct 31. The filter 34 is removably provided between the end yarn traveling space Sb, which is closest to the suction inlet 32a among the plurality of yarn traveling spaces Sb, and the suction inlet 32a. In the duct 31, a maintenance port 32a is formed between the yarn running space Sb at the end and the sucking port 31a1. A lid 36 capable of closing the 31a1 of the maintenance port is provided.SELECTED DRAWING: Figure 4

The invention discloses a device and a method for preparing diacetate fiber tows with adjustable total denier. The device comprises a dissolving kettle, a filtering system, a gear pump, a pressure sensor, a spinneret cap assembly, a channel, a wire feeding roller and a motor. Wherein the spinneret cap assembly is provided with an adjustable opening adjuster, and the number of the fan-shaped adjusting units is increased or decreased to control the effective opening number of the spinneret orifices, so that the total denier number of tows is continuously adjusted. And in cooperation with rotation speed adjustment of the gear pump, the production requirements of tows of different specifications can be met, and efficient and flexible preparation of the tows with multiple total deniers is achieved. The method comprises the steps of dissolving, filtering, spinning and total denier adjusting, and accurate control over the total denier number is achieved by synchronously adjusting the number of the fan-shaped adjusting units and the rotating speed of the gear pump. The device is compact in structure, convenient to adjust, good in sealing performance and suitable for large-scale production of the diacetate fiber tows.

A spunbonded nonwovens is made by first spinning thermoplastic continuous filaments and emitting them from a spinneret in a direction and then passing the filaments in the direction through a cooling chamber. Meanwhile cooling air is fed from respective manifolds flanking the chamber into the chamber to cool the filaments and the cooling air is guided into the manifolds through respective manifolds and through respective planar homogenizing elements each having a plurality of openings forming a free open surface area constituting 1 to 40% of the total surface area of the respective planar homogenizing element. The cooling air passes from the planar homogenizing element into the cooling chamber through a flow straightener.

The invention provides a spinning device. The spinning device comprises a feeding port, a screw extrusion assembly, a spinning box, a detachable temperature control assembly, a bearing plate and a winding assembly. The screw extrusion assembly is connected with the feeding port. The spinning box body is connected with the screw extrusion assembly. The detachable temperature control assembly is arranged below the spinning manifold body, and the ratio of the length of the spinning manifold body to the length of the detachable temperature control assembly is 1: 1-2.5. The bearing plate is fixed to one end of the spinning manifold and located between the spinning manifold and the detachable temperature control assembly. The winding assembly is coupled with the detachable temperature control assembly. According to the spinning device, production of the thermoplastic liquid crystal polymer fibers can be achieved more easily, the spinnability is improved, and the quality of the generated thermoplastic liquid crystal polymer fibers can also be improved.

The utility model discloses a production protection device based on non-woven fabric density increase, which belongs to the technical field of non-woven fabric production equipment.The production protection device based on non-woven fabric density increase comprises a melt-blowing die head, a mounting plate frame is fixedly mounted at one end of the melt-blowing die head, and a recovery pipeline is fixedly mounted at the bottom of the mounting plate frame; a dismounting and mounting mechanism facilitating cleaning of melt-blown materials is arranged in the mounting plate frame, and an adjusting mechanism meeting different production density requirements of non-woven fabrics is arranged on one side of the mounting plate frame. By arranging the adjusting mechanism, melt-blowing materials of the melt-blowing die head can be enclosed, the splashed melt-blowing materials can be effectively prevented from scattering in a workshop, the requirement for increasing different production densities of non-woven fabrics can be met by adjusting the mounting angle of the offset electrode plate, and the production efficiency is improved. And the influence of splashing of the melt-blown material on the production quality of the composite non-woven fabric is effectively prevented.

The utility model relates to the technical field of chemical fiber production, in particular to an anti-mistaken-touch air valve adjusting and fixing device which comprises a mounting plate, a threaded part and a mounting seat, a limiting ring for an air valve rod to penetrate through is formed on the mounting seat, and the shape of the limiting ring is matched with that of the air valve rod; the mounting strip and the mounting seat form a sliding pair, a circular ring is rotatably arranged at one end of the mounting strip, openings are formed in the circumferential surface of the circular ring at equal intervals, and the threaded parts abut against the openings and are in matched connection with the openings; the scale plate is arranged on the inner side of the circular ring and connected with the circular ring, the scale plate corresponds to the opening, and the corresponding scale plate can be observed from the outer side of the circular ring through the opening; the plug pin can penetrate through the mounting strip, and a pin hole matched with the plug pin is formed in the top face of the mounting plate. According to the air valve adjusting and fixing device capable of preventing mistaken touch, the number of turns and the direction of mistaken touch rotation of the valve rod of the air valve can be displayed through the scale plate on the circular ring, so that an operator can conveniently return to the original position in time, and stable production is ensured.

The invention discloses a chinlon 6 filament based on high carboxyl modification and a preparation method thereof, and belongs to the technical field of chinlon production. The polyamide 6 filament based on high carboxyl modification is prepared by adopting PA6 slices with low-end amino groups and high-end carboxyl groups as raw materials, the ordered combining capacity of fibers and anionic dye is enhanced by reducing the content of the end amino groups and increasing the proportion of the end carboxyl groups, the dye is prevented from being accumulated on the surface, the dyeing uniformity and the dyeing permeability of the polyamide 6 filament are improved, and the dyeing quality of the polyamide 6 filament is improved. Meanwhile, the production parameter combination is precisely regulated and controlled, so that more microporous structures are reserved to adsorb the dye while the high viscosity of the high-carboxyl section is solved in the production process, and dye molecules are more easily diffused into the fiber; the prepared chinlon 6 filament based on high carboxyl modification realizes high-saturation and high-uniformity dyeing under low dye concentration, has ideal dye-uptake and fixation rate, and also has excellent dyeing effect on light-color sensitive colors, not only reduces the washing times after the chinlon filament is dyed, but also does not fade after being washed for multiple times.

The invention relates to a device for solidifying and winding cellulose multifilaments, comprising an extrusion unit with at least 10 openings for forming filaments, a coagulation unit for solidifying the filaments, and a thread winder for winding the cellulose filaments, characterized in that the device contains no or only a partial washing unit for washing the cellulose filaments or for extracting a cellulose solvent from the cellulose filaments between the coagulation unit and the thread winder; and a method for winding cellulose multifilaments.

The present application relates to the field of large tow carbon fiber continuous production, and discloses an oiling method of large tow precursor.The method comprises the following steps: dividing the large tow precursor into alternate flat sections and folded and bent sections along the length direction, first oiling the large tow precursor, and controlling the oil content of each section to be the same;second oiling the flat sections of the large tow precursor, and controlling the oil content difference between the flat sections and the folded and bent sections of the large tow precursor to be within 0.1% when the large tow precursor is folded and packed and then unwound.After the large tow precursor is oiled by the oiling method provided by the present application, the large tow precursor is flat and folded and packed, and when the large tow precursor is unwound to an oxidation furnace, the oil content difference between the flat sections and the folded and bent sections of the large tow precursor unwound from the box is within 0.1%, the single fibers of the folded and bent sections of the large tow precursor do not adhere to each other, the large tow precursor is easy to separate, the amount of carbon fiber hair is reduced, the strength of the carbon fiber is improved, the carbon fiber is soft and supple, and does not become hard and brittle.

The application provides a bubble-assisted wet spinning device, a wet power fiber material, a preparation method and application, and belongs to the technical field of material preparation and application. The bubble-assisted wet spinning device comprises a spinning needle, a spinning liquid injection part and a gas injection part. The spinning needle comprises an inner channel and an outer channel. The inner channel is used for inserting a metal wire. The spinning liquid injection part and the gas injection part are communicated with the outer channel through the outer wall of the outer channel. The spinning liquid injection part is used for controlling the advancing speed of the spinning liquid. The gas injection part is used for controlling the gas pressure entering the bubble-assisted wet spinning device, so as to obtain fiber materials with different morphological structures. The bubble-assisted wet spinning device provided by the application can obtain fiber materials with various morphological structures by only changing the pressure or flow of the entering gas, so as to meet different use requirements.

The present application provides a unit for mounting yarn and a mixed yarn manufacturing device, which can easily perform a mounting operation of sequentially mounting a first group of yarns with respect to a plurality of guide rollers while operating a suction gun with both hands, can greatly shorten the operation time required for the mounting operation, and can greatly reduce the generated back yarn. In a mixed yarn manufacturing device (1) having guide rollers (31-35) that heat stretch a first group of yarns (Y1), a heat preservation box (30) having a box body (38) that accommodates the guide rollers (31-35), and a guide roller (36) that guides a second group of yarns (Y2), a unit for mounting yarn (5) is used during the mounting operation. The unit for mounting yarn (5) has a mounting portion (51) to the box body (38), a mounting portion (52) that extends along an edge portion of the box body (38) closer to the guide roller (36) than the guide rollers (31-35) and hooks the yarn (Y2), and the mounting portion (52) extends at a position protruding from an end surface portion of the guide rollers (31-35).