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2014-7-25 · Air Jet Spinning: 1. Air jet spinning is the latest in a string of technological developments intended to increase production speed and flexibility. This technique is also known as fascinated yarn spinning. Air-jet spinning system which consists of a 3-over-3 high-speed roller drafting unit, the basic jet design is also shown.
Get PriceAir Jet Nozzle Dty For Texturizing Machine , Find Complete Details about Air Jet Nozzle Dty For Texturizing Machine,Air Jet Nozzle Dty For Texturizing Machine,Yarn Spinning Machine,Yarn Winding Machine from Supplier or Manufacturer-Taian Jiamei Machinery Technology Co., Ltd.
Get PriceSince the yarn structure and properties in air jet spinning technology depend on the airflow field distribution and its intensity inside the air jet nozzle, therefore, it is necessary to study this airflow. The early system of air jet spinning was introduced by MJS. Investigations were
Get PriceDownload Citation | Numerical Study on the Principle of Yarn Formation in Murata Air-Jet Spinning | A realizable k-ε turbulence model was adopted to study the airflow characteristics inside the ...
Get PriceIn air-jet weaving looms, the main nozzle pulls the yarn from the prewinder by means of a high velocity air flow. The flexible yarn is excited by the flow and exhibits high amplitude oscillations.
Get Price2016-7-20 · Air-jet texturing is a pneumo-mechanical bulking different jets. Attempts to bulk spun yarns in air-jet process in which a bundle of multifilament yarn is texturing by the present authors revealed that the new overfed into a nozzle and subjected to an air stream, jets have an untwisting action on the yarn II …
Get PriceArticle. Numerical simulation of the yarn formation process in Rieter air jet spinning. September 2016; Journal of the Textile Institute 108(3):1-8
Get Price2021-2-8 · 3. Yarn Processing. When the filament enters the nozzle at low overfeed rate, the running direction of the hot gas flows along the tow to disperse it. The tow is fixed under the effect of deformation and heat setting in the nozzle. The design of the nozzle …
Get Price2020-4-22 · The air-jet texturing process is widely known for its ability to produce spun-like synthetic continuous filament yarns. Structural modification is achieved by contact of the continuous feed yarn with a supersonic air stream delivered by a nozzle. The details of the flow patterns are influenced by the geometry of the nozzle. This
Get PriceIn air jet looms, the weft yarn is transported from the prewinder to the reed by means of an air flow. In this work, the motion of a yarn inside a main nozzle during the first stage of an ...
Get Price2020-4-22 · all types of texturing nozzle, despite detailed differences in their design, because the underlying requirement to create a supersonic, turbulent, asymmetric, and non-uniform flow and a substantial change of direction of the yarn path at the nozzle exit is common to all satisfactory air-jet texturing processes.
Get Price2014-7-25 · Air Jet Spinning: 1. Air jet spinning is the latest in a string of technological developments intended to increase production speed and flexibility. This technique is also known as fascinated yarn spinning. Air-jet spinning system which consists of a 3-over-3 high-speed roller drafting unit, the basic jet design is also shown.
Get PriceYC9000 series air jet loom,on basis of Tsudakoma ZAX9100 technology,making some adjustment and also making some improvements on gas circuit design,high speed and low cost.cotton suitable for cotton fabric. Targeted on saving energy, YC9000 series of Ultra-speed air jet looms feature a comprehensive and profound structure.
Get Price2. The four banks of relay nozzles 3. The yarn accumulation/reserve tray nozzle 4. The main auxiliary air 5. The lint-cleaner air Each channel has its own air pressure regulator and cam- or solenoid- operated timing valve to adjust the air pressure and jet timings, respectively. The machine was set to optimally weave a 124 cm wide print cloth ...
Get Price2013-10-28 · Keywords: Add-on fi nish, Air-jet spinning, Elasti c recovery, Nozzle pressure, Polyester yarn IPC Code: Int. CI7 0021 1/00, D02G 3/00 1 Introduction The tensile properties of jet-spun yarns are dependent on their structures. These are determined in a complex manner by the properties of raw materials and process parameters used.
Get Price2019-10-10 · of the jet and at its core [2]. Moreover, the upstream bifurcation and branch pipe bend generates counter rotating Dean vortices in the flow and further interference is caused by the spear-rod support [3]. The secondary flows generated by these interactions lead to surface deformation, deviation and dispersion of the jet diameter [4].
Get Price2021-5-7 · Fused deposition modeling (FDM) is one of the most additive manufacturing techniques that adopted to produce prototypes and/or final parts, particularly under geometrical complexity restrictions. One of the most challenging aspects of FDM technology is the attainable roughness. In this paper, a hot-air jet …
Get PriceAir-jet loom is a textile machine designed to drive the long fiber using a combination flow of high-pressure air from a main nozzle and a series of assistant nozzles. To make the suggestion of how to make the fiber fly with high efficiency and stability in the jet flow, in which vortices also have great influence on fiber movement, the large eddy simulation method was employed to obtain the ...
Get PriceFigure 1.22 portrays a typical air-jet spinning system which consists of a 3-over-3 high-speed roller drafting unit, two compressed-air twisting jets arranged in tandem, a pair of take-up rollers and a yarn package build unit. The basic jet design is also shown. This has a central cylindrical channel (the spinning channel) through which the fibre ribbon from the drafting unit passes.
Get Price2020-11-4 · In high-speed fluid dynamics, the control of base pressure finds many engineering applications such as automobile industry and defense applications. Several studies have been reported on passive control using devices like cavities, ribs, aerospikes, etc. in the last three decades. Therefore, the present research focuses on active control uses the microjets in the form of an orifice of a 1 mm ...
Get Price2013-12-19 · packing density in case of single air-jet yarn in the outermost zone can be explained 011 the basis of the spinning mechanism. Air-jet yarn is made of wrapper fibres wound around a core of fibre flux coming out of front roller. The twisting system has two nozzles. The second nozzle twists the …
Get Price2020-4-22 · For a given texturing nozzle and conditions, there is an optimum filament fineness and number of filaments that can be textured effectively. The air-jet texturing process produces yarns similar to spun yarns in terms of their appearance and physical characteristics. An air-jet textured yarn and a cotton yarn of approximately the
Get Price2. The four banks of relay nozzles 3. The yarn accumulation/reserve tray nozzle 4. The main auxiliary air 5. The lint-cleaner air Each channel has its own air pressure regulator and cam- or solenoid- operated timing valve to adjust the air pressure and jet timings, respectively. The machine was set to optimally weave a 124 cm wide print cloth ...
Get Price2013-10-28 · Keywords: Add-on fi nish, Air-jet spinning, Elasti c recovery, Nozzle pressure, Polyester yarn IPC Code: Int. CI7 0021 1/00, D02G 3/00 1 Introduction The tensile properties of jet-spun yarns are dependent on their structures. These are determined in a complex manner by the properties of raw materials and process parameters used.
Get Price2008-3-25 · Reynolds number is about 106 when main nozzle of air-jet loom is filling.6 The value is far above the boundary of laminar flow. Therefore, the airflow of air-jet weft insertion is the turbulent flow with low press, small quantity flow and subsonic velocity. Figure 1 shows a kind of main nozzle structure. Compressed air flows from main tank to main
Get PriceIn air jet loom, many components have an influence on yarn tension, such as clamp, main nozzle, sub nozzle, brake, and the drum. In this paper, a measurement system for yarn tension experiment which based on a 32-bit Cortex-M3 embedded processor was designed and implemented.
Get PriceWith our draw-off nozzles you optimise the yarn properties and the productivity of your machines. BRÖLL further develops the draw-off nozzles of its Spirit family. Rotors, manufactured by BRÖLL, meet the requirements for all types of fiber and yarns due to their design …
Get Price2020-11-30 · adequate amount of air pressure is delivered, which changes into kinetic energy in the nozzle and conveys the weft yarn in the diversely formed air channels [5]. The purpose of this study is to find an optimum structure of the woven fabric produced in the air-jet loom.
Get Price2019-3-1 · jet-workpiece stand-off distance (m) (see Fig. 1a) K IC. fracture toughness of workpiece (MPa⋅m 1/2) k. air adiabatic index. l min − i. minimal distance between indentation i + 1 and indentation (1, 2, …, i) M. Mach number. m. single abrasive mass (kg) m a. mass of abrasives flow out from the jet nozzle outlet in unit time (kg) m air
Get PriceAir-jet loom is a textile machine designed to drive the long fiber using a combination flow of high-pressure air from a main nozzle and a series of assistant nozzles. To make the suggestion of how to make the fiber fly with high efficiency and stability in the jet flow, in which vortices also have great influence on fiber movement, the large eddy simulation method was employed to obtain the ...
Get Price2013-10-28 · Keywords: Add-on fi nish, Air-jet spinning, Elasti c recovery, Nozzle pressure, Polyester yarn IPC Code: Int. CI7 0021 1/00, D02G 3/00 1 Introduction The tensile properties of jet-spun yarns are dependent on their structures. These are determined in a complex manner by the properties of raw materials and process parameters used.
Get Price2018-11-27 · spinning part is composed of an air-jet nozzle and a hollow spindle with a yarn passage through it. The fibers coming from the front rollers are held together and twisted with the action of the high speed airflow inside the nozzle. Fibers that whirl around the hollow spindle tip attach to …
Get Price2018-1-1 · The amount of twisted surface fiber is about 15%–30% for vortex spinning and 5% for two-nozzle air-jet spinning (Stalder, 2016a). Vortex spun yarn offers higher tenacity values, a lower imperfection index, lower hairiness and lower elongation compared with jet spun yarn, owing to close and regular packing of the fibers.
Get Price2019-11-5 · air-jet, design parameters of the jet must be optimized [17,18]. Another application of the nozzle component is the Compact-jet spinning system. In the Compact-jet system, the nozzle is mounted below the compacting unit. The Jetring and Compact-jet spinning systems produce less hairy yarns with no adverse effect on the other yarn properties ...
Get Price2009-7-27 · An actively deforming converging-diverging nozzle was designed using a compact piezoelectric stack actuator coupled to a micronozzle. The nozzle was designed to achieve a Mach number of 1.5 and 20%-30% change in Mach number during piezoelectric actuation. The design of the actuator is given and preliminary data is presented.
Get PriceThe air jet nozzle 8 directs a jet of air at the yarn in the drawing zone. The yarn then passes via a thread guide 5 to a traversing guide (not shown) and is wound on a bobbin 6. After completing this tour, the yarn has undergone tensile drawing due to the velocity difference …
Get Price2020-11-4 · In high-speed fluid dynamics, the control of base pressure finds many engineering applications such as automobile industry and defense applications. Several studies have been reported on passive control using devices like cavities, ribs, aerospikes, etc. in the last three decades. Therefore, the present research focuses on active control uses the microjets in the form of an orifice of a 1 mm ...
Get Price2020-1-4 · In this paper, the optimization is carried out for a synthetic jet based piezoelectric air pump. The structural parameters which affect the output flowrate are determined and orthogonal test method is used to find out the optimal values of these parameters. Driven by a 150 Vpp, 3.15 kHz sinusoidal voltage signal, the optimized pump reaches its maximum output flowrate of 2.79 L/min, which is 32 ...
Get Price2019-6-1 · the dynamic abrasive-workpiece interactions in the tilted AAJP process where the horizontal velocity of the abrasives would be reduced from the impacting to the bouncing back stages, that, to a large extent, can imply that the cross-section of the footprints is a curvature-changing shape (see the schematics in Fig. 1(a2) and the experimental result in Fig. 12b).
Get PriceAir-jet loom is a textile machine designed to drive the long fiber using a combination flow of high-pressure air from a main nozzle and a series of assistant nozzles. To make the suggestion of how to make the fiber fly with high efficiency and stability in the jet flow, …
Get Price2020-4-22 · element was used with the nozzle. Two other sets of yarns were produced to investigate the effects of using an impact element and to compare the effects of wet and dry texturing on the yarn properties. For these further tests, only the overfeed was varied in order to keep the testing programme within reasonable time limits.
Get Price2020-11-19 · Air-jet spinning wrap yarn formation. Air-jet spinning passes through the air-jet nozzle to make the strands rotate at a speed of about 2500 r/min and undergo vortex torsion, so that the exposed free fiber ends on the surface of the yarn wrap the yarn body to form a wrapped yarn…
Get Price2021-2-23 · Air Jet Spinning: Air-jet spinning is the latest inwards a string of technological developments intended to growth production speed in addition to flexibility. This technique is likewise known equally fasciated yarn spinning. Air-jet spinning system which consists of a 3-over-3 high-speed roller drafting unit, The basic jet pattern is likewise ...
Get Price2019-11-5 · air-jet, design parameters of the jet must be optimized [17,18]. Another application of the nozzle component is the Compact-jet spinning system. In the Compact-jet system, the nozzle is mounted below the compacting unit. The Jetring and Compact-jet spinning systems produce less hairy yarns with no adverse effect on the other yarn properties ...
Get Price2017-6-18 · Oxenham W, Basu A. Effect of Jet Design on the Properties of Air-Jet Spun Yarns. Textile Research J. 1993;63(11):674‒678. Zeng YC, Yu CW. Numerical Simulation of Air Flow in the Nozzle of an Air-Jet Spinning Machine. Textile Research J 2003;73(4):350‒356. Jeon BS. Effect of an Air-Suction Nozzle on Yarn Hairiness and Quality.
Get PriceYC9000 series air jet loom,on basis of Tsudakoma ZAX9100 technology,making some adjustment and also making some improvements on gas circuit design,high speed and low cost.cotton suitable for cotton fabric. Targeted on saving energy, YC9000 series of Ultra-speed air jet looms feature a comprehensive and profound structure.
Get PriceAir Jet Loom, High Speed Weaving Machine, Textile Weaving Machinery manufacturer supplier in China, offering China Spark Energy Saving Air Jet Loom, Textile Weaving Machinery, High Speed Double Nozzles Dobby Shedding Water Jet Loom, Weaving Machine, Spark Yc9000 Series Jacquard Air Jet Loom Textile Weaving Machine with Best Price and so on.
Get Price2020-6-1 · The main jet dynamics include the interface deformation (the hump state), the tubular co-flowing jet (the spout state) and the destabilization of the liquid jet (the jet state). As soon as the surrounding air is sucked into the tube and a radially inward gas flow upon the interface will be formed.
Get Price2020-11-4 · In high-speed fluid dynamics, the control of base pressure finds many engineering applications such as automobile industry and defense applications. Several studies have been reported on passive control using devices like cavities, ribs, aerospikes, etc. in the last three decades. Therefore, the present research focuses on active control uses the microjets in the form of an orifice of a 1 mm ...
Get Priceair jet: yarn is premeasured and guided through nozzle where a narrow jet of air sends it through the shed. energy consumption is high. rapier: weaves primarily spun yarns @ up to 1,000 picks per min. water jet: uses high pressure jet of water to carry the filling yarn across the warp.
Get Price2010-4-12 · Abrasive jet machining (AIM) is a process of material removal by mechanical erosion caused by the impinge-ment of high velocity abrasive particles carried by a suitable fluid (usually a gas or air) through a shaped nozzle on to the workpiece. An AIM set-up may be of two types: one employing a vortex-type mixing chamber and the other employing
Get Price2021-8-15 · SpinCOM yarn integrity is later on achieved by applying a sizing. The mechanical load on the yarn during commingling is negligible low as compared to air jet texturing.Neither glass fibres are broken nor polymer fibres ched which results in high yarnare stret strength and avoids thermal shrinkage
Get Price2007-9-12 · speed air jet were modelled: interface and overhead. Thermal boundary conditions were applied, in relation to air jet positioning. Figure 1 shows the two different position of the nozzle. Three different thermal boundary conditions consistent with natural air …
Get PriceReasonable control of the subgrade water content, to minimize its impact on the settlement value and deformation, in the roadbed construction, the need to set the corresponding drainage facilities, so that with the culverts, bridges and other well formed drainage system; Should be provided by the
Get PriceDye 30 to 450 g/mt. sq. Fabric (cotton woven, cotton knit and its blends) Cup type very soft flow nozzle with low pressure higher flow design. Online filter design for easy cleanup even during the process with extra replaceable filter mesh. Specially design vessel cleaning system by SS spraying nozzles.
Get Price2020-1-16 · Shock Waves DOI 10.1007/s00193-014-0546-z ORIGINAL ARTICLE Numerical simulations of the early stages of high-speed droplet breakup J. C. Meng · T. Colonius Received: 10 March 2014 Revised: 9 June 2014 Accepted: 28 November 2014
Get PriceJournal of Biomimetics, Biomaterials and Biomedical Engineering Materials Science. Defect and Diffusion Forum
Get PriceThe linear density F3Wf) on three woven fabric types (F1, F2, and F3) were of continuous filament air-entangled polyester textured yarn evaluated. “Design Expert” software was used for statistical from bobbin (F0) is 33.33 tex and has 68 filaments in a investigation, and the factorial design was carried out.
Get Price2020-11-6 · the air, which can also be moving under wind. Okaruma and Nakanishi (1969) found, from a photographic study, that the deformation of drops in flight is random and concluded that the assumption of an average spherical shape is reasonable. The ballistics of a water drop depends on drop size, so a thorough study must consider a range of drop sizes.
Get Price2021-6-17 · air-jet nozzle. As shown in Figure 1(b), the design of the nozzle employed in this research has been modified compared to that adopted in the commercialized vortex spinning system. The major modification is that an orifice for feeding the core filament is provided through the fiber guiding member in the nozzle entrance.
Get Price2017-10-10 · The HVAC unit provides hot air to the nozzle which is, blowing high velocity air jets to the windscreen. ... optimization can be used for the design of the defroster nozzle. In the latter case, the adjoint ... To verify the validity of the CFD results in the vicinity of the defroster nozzle jet flow and the internal surface of the windshield ...
Get Price2016-9-2 · actuators, independent drives technology; modern yarn feeders for shuttleless looms and its control; basics of fluid dynamics; weft yarn arrival issues and developments; automatic weft arrival control, air jet nozzle design and nozzle arrangements in loom; let-off and take -up
Get Price2021-5-13 · In this paper, numerical simulation and laboratory experiments were combined to research the tucked-in behavior of the yarn in the pneumatic tucked-in selvedge apparatus, and explore the effect of initial pressure of oblique-blowing airflow and folding-in airflow on yarn tucked-in.
Get PriceJournal of Biomimetics, Biomaterials and Biomedical Engineering Materials Science. Defect and Diffusion Forum
Get PriceA textile interlacing slide jet 2, 102 includes a jet body 10, a jet carriage 40, 140 on which a ceramic jet nozzle insert 30, 130 is mounted, and a spring housing 52 that includes a stack of compression spring washers 70, 170, such as Belleville washers.The spring housing 52 is rotatable, relative to an upper arm 20 of the jet body 10, to a tilted position to permit insertion and removal of ...
Get Price2011-7-10 · Nozzleless Propulsion is a propulsion unit for the acceleration of a self propellant vehicle such as missiles or a rocket is loaded with a propellant block secured laterally to the body of the propulsion unit by means of a combustion inhibitor and has more than aspect ratio of 6.0. The propellant blocks has one axial duct and at least 6 ...
Get Price2014-9-19 · In particular, for the first time, a GMA is developed to move a jet-nozzle in a deflector-jet-type servovalve. This means that the conventional electromagnetic torque motor is replaced by a GMA in this novel deflector-jet servovalve. Its detailed design, considering several parameters, is presented.
Get Price2018-12-5 · Air jet Texturising: In this method of texturing, yarns led through the turbulent region of a air jet at a rate faster than if is drawn off on the far side of the jet, in the jet, the yarn structure is opened , loops are locked inside and others are locked on the surface of the yarn. An example of this method is the taslam process; Air jet ...
Get PriceYarn characteristics like count, twist, frictional behaviour, bending rigidity, presence of knots, yarn defects and yarn strength play a critical role in deciding the knitting performance of a yarn. .
Get Price2008-9-19 · spinning. Air-jet spinning was originated from fasciated yarn proposed by DuPont Co.. The fasciated yarn was commercialized as MJS using two serial air-jet nozzles by Murata Machinery Co. in 1980. By this method, medium to fine thickness yarns can be produced with a high speed as 300m/min. This method was successful in the yarn production of
Get Price2021-6-17 · air-jet nozzle. As shown in Figure 1(b), the design of the nozzle employed in this research has been modified compared to that adopted in the commercialized vortex spinning system. The major modification is that an orifice for feeding the core filament is provided through the fiber guiding member in the nozzle entrance.
Get Price2010-4-12 · Abrasive jet machining (AIM) is a process of material removal by mechanical erosion caused by the impinge-ment of high velocity abrasive particles carried by a suitable fluid (usually a gas or air) through a shaped nozzle on to the workpiece. An AIM set-up may be of two types: one employing a vortex-type mixing chamber and the other employing
Get Price2019-12-5 · micromachines Article E ect of Enhanced Squeezing Needle Structure on the Jetting Performance of a Piezostack-Driven Dispenser Xiang Huang 1, Xiaolong Lin 1, Hang Jin 1, Siying Lin 1, Zhenxiang Bu 1, Gonghan He 1, Daoheng Sun 1,2 and Lingyun Wang 1,2,* 1 Department of Mechanical and Electrical Engineering, Xiamen University, 4221-134th Xiang’an South Road, Xiamen 361102, …
Get Price2014-9-19 · In particular, for the first time, a GMA is developed to move a jet-nozzle in a deflector-jet-type servovalve. This means that the conventional electromagnetic torque motor is replaced by a GMA in this novel deflector-jet servovalve. Its detailed design, considering several parameters, is presented.
Get Price2021-3-8 · All design, fabrication and testing guidelines are in strict accordance with AMCA 210, AMCA 300, ISO 5807, GBT 1236, ISO 13350 and GBT 10178 standards. 2. The INFINAIR laboratory has replaced the simple cardboard shielding method duct test with a new generation of precise-flow nozzle matrix systems. 3.
Get PriceYarn characteristics like count, twist, frictional behaviour, bending rigidity, presence of knots, yarn defects and yarn strength play a critical role in deciding the knitting performance of a yarn. .
Get Price2020-6-15 · To predict the hydrodynamic characteristics and supercavity shape of supercavitation flows, the numerical model including VOF, cavitation model, and turbulence models is presented and validated by a well-established empirical correlation. The numerical method is then employed to simulate the high-speed supercavitating vehicles with two different types of control surfaces: bow rudders and stern ...
Get Price2018-7-27 · In this example, there ae 136 design variables and 132 constraints for the design problem. The design was optimized in acceptable time frame, and the cost is greatly reduced. SmartDO solved this problem with its default solver parameters. For …
Get Price2011-7-10 · Nozzleless Propulsion is a propulsion unit for the acceleration of a self propellant vehicle such as missiles or a rocket is loaded with a propellant block secured laterally to the body of the propulsion unit by means of a combustion inhibitor and has more than aspect ratio of 6.0. The propellant blocks has one axial duct and at least 6 ...
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