Projectile loom diagram 1 : Partially guided solid carrier; 3. SHUTTLELESS LOOMS Fig 3. Hence, a high acceleration at initiation of the movement takes place, resulting in a high wear of the weft yarn. [2] It differs from conventional looms in its use of the projectile for insertion and how the reed and projectile track move. 34 W at 230 picks per minute (PPM), for projectile required 268. Shedding Mechanism The shedding mechanism separates the warp threads into two layers or divisions to form a tunnel known as ‘shed’. It then explains the gearing mechanism of a tappet loom, including the motor, pulleys, gears, crank shaft, bottom shaft and tappets. Jan 1, 2012 · When the shuttle has almost reached the other side of the loom, the shed begins to close as the direction of the heald shafts is changed. Jul 19, 2013 · Conventional Loom Versus Projectile Loom: Sulzer projectile weaving machine differs from a conventional automatic loom mainly in two respects. Present Condition/Scenario of Modern Loom in Bangladesh Mar 2, 2020 · In conventional Projectile weaving machine a projectile (fig. Projectile loom can produce up to 300 ppm and is less noisy than the shuttle loom. 9. Key points: - Projectile weaving machines were invented in 1924 and introduced commercially in 1953. Fig: Loom timing diagram The document discusses the parts and mechanisms of shuttle looms and tappet looms. Single rapier machines: The torsion rod characteristics of the Sulzer loom can be adjusted in the zero position by means of the adjusting lever and the adjusting actuator of the torsion rod of loom. Projectile looms use an accumulator and projectiles to insert the weft through reciprocating motion. More than one cloth can be woven simultaneously with different looms for looming[2] [1] Md. The size of the projectile is much smaller, 90mm long, 14mm wide and 6mm thickness. [1] The projectile is propelled through the warp shed using a metal torsion rod to grip and carry the weft. Rapier Loom: Rapier loom comes in many types. 2. Download scientific diagram | Weaving: (a) the projectile loom and (b) the fabric from publication: The Design of Cellular Fabrics with Graded Cell Distribution | Cellular textile reinforced Feb 14, 2012 · There are different types of beat-up mechanism in weaving, depending on several factors. [25] [26] The loom is controlled by punched cards with punched holes, each row of which corresponds to one row of the design. The loom timing cycle is shown in below Figure. Jun 4, 2011 · The primary weaving loom mechanism are three in number: Shedding mechanism; Picking mechanism; Beat-up mechanism; 1. The shedding mechanism separates the warp threads into two sheets (layers) by lifting some of the heald shafts up whilst lowering others. 1 The key parts of a loom. Ferdus Alam , B. Negative tappet Shedding Mechanism: Construction: The figure shows a negative tappet shedding mechanism. According to the principle of weft insertion, weaving looms can be divided into shuttle looms, projectile loom, rapier loom, and air-jet May 16, 2012 · Single-phase shuttle-less looms such as rapier loom, projectile loom, air jet loom and water-jet loom are considered to be the second generation of weaving machines in which the primary mechanisms of weaving (i. The common patterns are plain weave, twill weave, satin weave (has a number of Introduction : A loom is a device used to weave cloth. Blending historical insights, technical analysis, real-world case studies, and interactive diagrams, this guide provides mechanism of weft insertion by projectile loom In the projective weaving machine, the entire concept of picking is different from the conventional picking mechanism. Projectile Looms: Fig 3. The projectile which is break as core to the halt is break is releases . Jan 6, 2022 · Specific modern loom types discussed include rapier, air jet, water jet, and projectile looms, which utilize different automated processes for inserting the weft through the warp shed. The manual contains sections on installation and preparation, user guide, and machine setting details. For twist loss, the speed of the loom and relay nozzle pressures were varied in the range of (300–510 rpm loom speed, 2–4 bar left side relay nozzle air pressure (LSRNP) and 3–6. Energy Efficiency: Product Description. The diagram depicts the start and end of each primary event of different weaving motions. Here, the weft is inserted by a much smaller bullet like shuttle or carrier about 90 mm long and weighing about 40 grams. Reduced Maintenance: With fewer moving parts compared to shuttle looms, Sulzer looms require less maintenance and have lower downtime, enhancing productivity. #Projectile Weaving Mechanism is explained in detail, along with the parts of Projectile and Pick Nov 25, 2015 · - Projectile looms produce fabrics with good quality at high efficiency and low energy use. It may be considered as the point where the warp and weft become cloth, because it is at this point where the last pick of weft, which was left by the shuttle, becomes beaten up. In the mid-twentieth century, shuttleless weft insertion started to emerge. Oct 27, 2010 · This loom needs smooth, uniform yarn which is properly sized in order to reduce friction. A where is relative extension of a weft thread when a tension force F is applied to it. com reversed for another pick. It describes how small clamp projectiles sequentially take weft yarn from bobbins and insert it through the shed in a continuous looped motion. Each loom The Jacquard loom is a mechanical loom, invented by Joseph Marie Jacquard in 1801, which simplifies the process of manufacturing figured textiles with complex patterns such as brocade, damask, and matelasse. [3] The weft insertion cycle involves the projectile moving into Mar 6, 2016 · Loom is a machine which used to manufacture woven fabric. Initial speed projectile of Sulzer projectile loom is independent of speed loom and determined the potential energy torsion rod. 1) is used to hold or grip the weft yarn and lay it in the opened shed. A projectile loom is a shuttleless loom. Guys You can appreciate my hard work by small financial contribution in my UPI account9818239366@hdfcbankIN THIS VIDEO, I AM DISCUSSING THE PROJECTILE LOOM. Sulzer are commonly equipped with independent pension 5. Source: Wood, 2006. Projectile Looms in Shuttle-Less Weaving: Everything You Need to KnowDescription:Projectile looms have revolutionized the textile industry, allowing for effi The document summarizes the operation of a projectile loom weaving machine. 1. The torsion rod characteristics of the Sulzer loom can be adjusted in the zero position by means of the adjusting lever and the adjusting actuator of the torsion rod of loom. In the shuttle less Loom, weft insertion is done by various devices such as rapier, air jet, water spray, projectile, multi-spindle mouth etc. The start and end of events are influenced by loom type, fabric width and fabric type. 45 W at 220 ppm. Jan 1, 2020 · When the shuttle has almost reached the other side of the loom, the shed begins to close as the direction of the heald shafts is changed. 1: Line Diagram of Projectile loom 3. They are Rapier loom (single and double type); Gripper or projectile loom; Water jet and Air jet loom Except the weft yarn is placed at the side of the loom, the weaving processes (primary and auxiliary motions) of shuttleless loom is similar to shuttle loom The document describes different types of looms used in weaving including projectile looms, air jet looms, and rapier looms. The projectile is having 10 times less mass than the shuttle used in shuttle loom. It grips the weft securely and deposits it without Nov 13, 2010 · The picking arm has released the projectile which is shown in the guide teeth at the mid-shed position. 3 : Basic concepts of fluid carrier; Module4. It is a two ways direction as compare to conventional projectile loom. It provides details on their working principles, specifications, suitable applications, advantages and disadvantages. One is crank and crank-arm beat-up (used in shuttle loom), and another is cam best up (mostly used in the shuttleless loom). This is a two-harness loom in which adjacent warp yarns are threaded through alternate healds so that the weft thread passes over and then under alternate warp threads in a plain weave fabric. The shuttle break is shown in its operating position with the shuttle returner ready to push the projectile to the release and tucking position. Projectile looms insert the weft thread using projectiles while rapier looms use finger-like carriers. (Brochures on cam, dobby and Jacquard systems for warp shedding can be downloaded from the Staubli web site. Discover the world's research 25+ million members Nov 1, 2016 · It discusses the basic components and functions of a loom, including the heald shaft, sley or lay, shuttle, shuttle box, picker, and reed. Drawbacks of a conventional shuttle loom; Module2. Shuttle less Loom can be categorized as follows: Rapier Loom; Projectile Loom; Water Jet Loom; Air Jet Loom; Multi-shed Loom Sep 3, 2013 · Conventional Loom Versus Projectile Loom: Sulzer projectile weaving machine differs from a conventional automatic loom mainly in two respects. Figure 18. Aug 19, 2022 · Rapier loom is popular in the production of terry cloth because of the flexibility they offer for production. 2 treadle levers D and E are connected to the loom back-rail by a bracket F. Projectile weaving machines are versatile and suitable for all weaving purposes, especially for the production of technical textiles, from the finest filter fabrics to densely woven and tear-resistant. The projectile is instantly accelerated to its maximum speed of up to 60 m/s. ) Picking Picking is inserting the weft yarn once the shed has been formed. A combine of tappets A and B is fixed to the bottom shaft C at one hundred eighty degrees to every alternative. Basic principle of the unconventional shuttleless system; Module3. Due to this the weft is inserted at substantially higher speed. Figure 6: Lakshmi Ruti C mechanical take-up motion A double-through take-up cam 2 is mounted on the picking shaft 1, and as the cam rotates, it oscillates the follower bracket 4. It grips the weft securely and deposits it without the yarn by the clamping of the yarn into the projectile. Shuttle less Loom: In a shuttle less loom, weft yarn is inserting through the warp yarn by the means of projectile, rapier, air jet or water. Sc. The method of insertion of weft into the warp shed; The method of moving the reed and the projectile track; Main Features of Projectile Loom: The picking are projectile receiving units are separated from The present properties of torsion rod in projectile loom elates, to a torsion rod assembly for a “Sulzer” projectile of textiles Suspension System, and more particularly to modifying the effective length of the torsion rod in projectile loom to provide variable effective Spring rates. At the receiving side the weft end gripper is positioned to grip the weft after reception. The projectile system minimizes weft breakage and ensures consistent weft tension, contributing to the overall efficiency and reliability of the loom. Jun 4, 2011 · Projectile Weaving Machine or Loom: Projectile weaving machine is a shuttleless loom method for filling yarn insertion using a small metal device resembling a bullet in appearance with a clamp for gripping the yarn at one end, which is then propelled into and through the shed. Power for picking—for shuttle 201. Early models of it use one long rapier device that travels along the width of the loom to carry the weft from one side to the The projectile loom uses a bullet-like shuttle called a projectile to insert the weft thread. On a shuttle-less loom, the weft is thrown through the shed by a projectile (a projectile loom), a rapier (a rapier loom), by air (on an air-jet loom), or by water (on a water-jet loom). The launching mechanism uses a torsion bar to accelerate the projectiles through the • Any design more than 8 shafts require dobby loom. Rapier looms use rigid or flexible rapiers to insert the weft in a linear motion. the projectile is pushed backward on the picking inside . - The projectile is propelled through the warp shed using stored energy from a twisted metal torsion bar, allowing very high insertion speeds. It describes the major components of shuttle looms like the warp beam, whip roll, lease rods, heddles, harness, shuttle, reed, temples and cloth roller. Among the different types of modern looms, projectile loom is one of Nov 5, 2024 · What is Projectile Loom? Projectile weaving machine or loom uses a projectile equipped with a gripper to insert the wept in the warp shed instead of a regular shuttle. Air jet looms use compressed air to propel the weft through movable nozzles. The method of insertion of weft into the warp shed; The method of moving the reed and the projectile track; Main Features of Projectile Loom: The picking are projectile receiving units are separated from 3. Different parts of loom with identification: Fig: Cross section of shuttle loom with identification TABLE OF CONTENTS Sr No Contents Page no. Oct 25, 2024 · The schematic diagram of a mechanical take-up mechanism used in an automatic shuttle loom is given in Figure 6 . They use small, bullet-like projectiles to insert weft threads at high speeds up to 1500 picks per minute. It describes the projectile technology with reference to the P 7350 model and provides guidelines for safety Mar 16, 2014 · As the projectile is passing through guides and there is no reed to projectile or projectile to yarn contact. 1, which shows the main units and mechanisms, where denoted: #1—the drive of mechanism for pushing of projectile weft from right receiving box; #2—the drive of mechanisms of right receiving box; #3—the drive of mechanism of of a simple shuttle loom are shown in Figure 11. 2 : Fully guided solid carrier; 3. Jul 8, 2015 · Projectile Weaving Machine. in Textile Engineering, Southeast University, Cell # 1723300700, Email- ferdus. This paper investigates the dynamics picking mechanism of Sulzer projectile loom during its discharge. Machine drive and power consumption; Module5. 7 Projectile loom with Jacquard system fitted. We feel proud to introduce ourselves as a reliable organization, engrossed in trading and supplying the broad assortment of Sulzer Projectile Loom that is mainly used in weaving or stitching of fabric in textile and jute industries. 1 Shedding. 8: Electromagnetic Projectile [10] Magnetic Timing Belt- in this method two pulleys and a belt is used where two permanent magnets are used which move along with magnetic projectile with a special kind of reed. The structural scheme of STB projectile loom [], shown in Fig. In the "Sulzer" projectile loom, the movement of the intermediate Feb 15, 2022 · In the “Sulzer” projectile loom, known torsion rod control enables projectile loom operation with improved energy consumption and reduced wear. 2: Shuttle Loom Supply package Sciossors Selvedge grippers Projectile feeder Gripper projectile Selvedge grippers 10 projectile loom is picking mechanism. Nov 18, 2020 · The document summarizes projectile weaving, which uses gripper projectiles to insert weft threads into warp threads. This rapid fire sequence can produce well over 1000 picks per minute, and that’s on a textile that’s often twice as wide. Nov 9, 2020 · Therefore, the weaving cost of a projectile loom is much lower than that of the shuttle loom. Sep 8, 2023 · In the modern weaving industry, shuttle less Loom has been introduced. It acknowledges experts who provided support in creating the manual. There are some kinds of weave pattern. shedding, picking and beat-up) take place in one loom cycle, thereby inserting one pick in a single phase. Jan 1, 2014 · Let’s consider the creation of a dynamic model of STB projectile loom based on structural scheme. j@gmail. weft band is closed ,tension lever take out any salkness in weft yarn . To determine a maximum of a weft thread tension force in a part of a weft thread between nearest to projectile thread conductor 8 and a projectile we need to take into account rounding angles in sum equal when a weft thread passes through thread conductors 5, 7, 8 in accordance with Fig. A single weft yarn, passed from one side of the loom to the other, is called one pick. It is specifically designed to accelerate projectile to speed of 25 m / s. 4–200 tex [4] . A projectile guide is needed to direct the projectiles without contacting the warp threads. This comprehensive article explores the evolution, mechanisms, and applications of projectile looms in weaving heavy fabrics. weft accumulator start the accumulating the weft supply for next pick. There I discuses the functions different parts of loom with figure. Aug 25, 2018 · d. . Projectile weaving is suitable for spun and filament yarns in the range of 6. Now a days it is modified to advanced electronic systems as well as of microprocessors for the supervision and the control of the various devices, this machine is characterized by a good productivity level (450 rpm and 1050 m/min of inserted weft) and by Oct 27, 2010 · Projectile loom technology for heavy fabrics has revolutionized textile production by merging advanced mechanical design with precision engineering. Every part has individual function. 5 bar right Feb 13, 2022 · Loom is also classified into two types depending on the shuttle: Shuttle Loom: Shuttle loom is that loom where weft yarn is inserting through the warp yarn by the means of shuttle. The precise shape of the loom and its mechanics may vary, but the basic function is the same. Multiple The document is a manual providing instructions for setting up and maintaining a Sulzer projectile weaving machine. Only one shed is formed At the point 9 is what is known as the ‘Cloth fell’. Since each warp yarn from the weaver’s beam passes through an eye of the heald shaft, when some of the heald shafts are lifted and lowered by a shedding mechanism, the corresponding warp ends are raised or lowered thus forming an opening. Productivity May 17, 2015 · The loom timing is presented by a diagram termed as “Loom Timing Diagram”. Source: Sulzer Textil. Fabric selvedge; Module7. The weight of the projectile is only 40g while the weight of the shuttle is 400g. Note that the width of a projectile loom is nearly 3–4 times than that of the shuttle loom. 3. Drive to sley; Module6. In the "Sulzer" projectile loom, the movement of the intermediate member results in the axial movement of the adjusting lever to change the position of the zero Oct 12, 2014 · When the projectile reaches the other side, it releases the yarn and drops down to a conveyor belt which then transports the projectile back while another projectile shoots across the loom. 4. Dec 15, 2020 · TexConnect is back with another video on Projectile Weaving. In this projectile loom, the filling of yarn is done by using a small metal device resembling a bullet in appearance with a clamp for gripping the yarn at one end, which is then propelled into and through the shed. It describes how these components work together to form fabric by interlacing the warp and weft threads. 5 bar right Aug 11, 2021 · - Projectile looms produce fabrics with good quality at high efficiency and low energy use. Figure 11. Finally, it discusses Projectile weaving machine is a shuttleless loom method for filling yarn insertion using a small metal device resembling a bullet in appearance with a clamp The document discusses different types of shuttleless looms used in modern weaving, including projectile, rapier, and jet (water jet and air jet) looms. Types of Rapier Loom: Rapier loom may have various types according to the weft insertion mechanism and number of pick such as insertion of double pick, insertion of single pick, two phase rapier etc. They can weave a wide variety of yarns from fine to coarse. - Textiles Committee Click on the picture below to see what a projectile loom is / how a projectile loom works. Figure 1 represents a Schematic diagram of a weaving loom (Long 2005). The basic purpose of any loom is to hold the warp threads under tension to facilitate the interweaving of the weft threads. e. On a shuttleless loom, the weft is thrown through the shed by a projectile (a projectile loom), a rapier (a rapier loom), by air (on an air-jet loom) or by water (on a water-jet loom). Fig. Aug 28, 2022 · In this type of loom, a shuttle, which carries the weft yarn wound on a quill, is transported from one side to the other and back. the weft feeder moves forward for griping the weft near to the selvedge . But mainly, two types of beating is considered in general based on the operating element. A loom contains different parts. Chiefly, it uses widely in fabric production. The passage of materials through a typical loom is also illustrated in a diagram. Jet looms use jets of For twist loss, the speed of the loom and relay nozzle pressures were varied in the range of (300–510 rpm loom speed, 2–4 bar left side relay nozzle air pressure (LSRNP) and 3–6. Shuttle loom is a conventional types of loom. The projectile has clamps at one end which will hold the The projectile weaving machine made its appearance in the market at the beginning of the 50’s and is today still used in the whole world.