Rapier loom mechanism ppt Some models are now operating Oct 8, 2020 · 1. Rapier looms are very efficient and their speed ranges from 200 to 260 ppm. The rapier loom operates by using rapier tapes or rods to carry the weft yarn across the warp shed, enabling high-speed weaving with precise control. Jun 3, 2016 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. They provide advantages over conventional looms like higher production and reduced . In a double rapier loom, two rapiers enter from opposite sides and transfer the weft Nov 25, 2015 · This document discusses the rapier loom and rapier weaving. Rapier looms can Mar 6, 2019 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. Other developments include faster picking speeds up to 1620 picks per minute, versatile rapiers that can handle difficult yarns, smaller and lighter rapier heads for Feb 19, 2018 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. It describes improvements such as electronic color selection that allows for precise synchronization of weft insertion with machine speed and pattern. It describes electronic weft insertion systems by Picanol and Dornier that allow for microprocessor-controlled insertion of multiple weft colors. It covers the importance of auto looms and compares them to power looms. Apr 4, 2015 · 1. Dec 6, 2014 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. Shedding opens the warp sheet into layers. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Apr 28, 2017 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. Weaving Rapier - Free download as Powerpoint Presentation (. In Jacquard looms, each warp yarn is in an individual heald. Rapier looms can Jun 18, 2023 · The document describes Abdullah Al Mahfuj's profile and a presentation on a rapier loom. Shuttle looms use a flying shuttle to pass the weft. May 16, 2014 · 1) A loom is a device used to weave cloth by holding warp threads under tension to allow weft threads to be interwoven. They provide advantages over conventional looms like higher production and reduced For a double rapier loom, two rapiers enter the shed from opposite sides of the loom and transfer the weft from one rapier head to the other near the centre of the loom The advantage of two rapier system is only 50% of the rapier movement is utilized in the weft insertion of single rapier loom Nov 21, 2016 · Another type of rapier loom has two rapiers, one on each side of the loom. The document discusses modern looms used in weaving factories in Bangladesh, focusing on four main types: projectile looms, air jet looms, rapier looms, and water jet looms. Rapier looms can Sep 12, 2016 · The document discusses the rapier loom weaving process. It can use a single or double rapier system. The mechanisms of auto looms that are discussed include cop changing, shuttle changing, and weft patterning. May 19, 2016 · This document describes three main methods of shuttleless weaving: projectile, rapier, and air jet. The beat-up motion lays the previously laid weft to the fell of the cloth. Rapier looms can Rapier looms are a fundamental type of shuttleless weaving machines, widely used in textile manufacturing. This article explores their working principles, key components, advantages over other loom types, and their role in the textile industry. Specifically, it describes the 7-wheel and 5-wheel take-up mechanisms used in cotton and jute weaving respectively. It begins by defining a rapier loom as one that uses a rapier to pull the weft yarn across the loom. Rapier looms can Nov 24, 2018 · This document discusses the rapier loom and rapier weaving. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Rapier looms are one of the most widely used shuttleless looms in the textile industry. Projectile looms use small projectiles to carry the weft yarn through the shed, while air jet looms use compressed air to shoot the weft yarn through. Secondly, the sley of the high-speed rapier loom is made of aluminum alloy, which is very light in weight. It also discusses features like electronic filling tension control, rapier cleaning devices, shed geometry control, let-off and take-up mechanisms This document compares different types of rapier and shuttle looms supplied by various manufacturers. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Aug 15, 2024 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. It can use a single rapier or double rapier system. txt) or view presentation slides online. Scribd is the world's largest social reading and publishing site. 3. pdf), Text File (. Rapier looms can Jul 22, 2017 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. They offer high weaving efficiency, versatility in handling different yarn types, and superior fabric quality. It then describes the key components and functioning of single and double rigid and flexible rapier systems. In a double rapier loom, two rapiers enter from opposite sides and transfer the weft Jan 28, 2019 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. One rapier feeds the weft halfway through the sheds of warp yarns to the arm on the other side, which reaches in and carries it across the rest of the way. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for In multi-harness looms, individual warp yarns are threaded through no more than one heald mail. Dec 15, 2018 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. Rapier looms can Oct 27, 2010 · The basic mechanisms in any type of looms can be classified into Primary (shedding, picking & beat up), secondary and Auxiliary motions. The weaving cycle For a double rapier loom, two rapiers enter the shed from opposite sides of the loom and transfer the weft from one rapier head to the other near the centre of the loom The advantage of two rapier system is only 50% of the rapier movement is utilized in the weft insertion of single rapier loom Feb 13, 2015 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. A rapier loom uses a rapier device to pull the weft yarn across the loom. 2. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Describes different types of weft insertion in a loom (shuttle, rapier, airjet, projectile and waterjets) Main Mechanism of Dornier Rigid Rapier Loom (2) Introduction of Jacquard Weaving Loom Machine The Difference between Rapier Loom Machine, Air-jet Loom and their Jul 28, 2019 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. Why does high-speed rapier looms use a conjugate cam beating-up mechanism? Firstly, high-speed rapier loom adopts a separate sley to ensure that the sley has a long static time in the rear center during the weft insertion process. Rapier looms are shuttle-less and use rigid or flexible rapiers to carry the weft through the warp shed. The document discusses take-up motion in weaving looms. Rapier looms can Jun 12, 2015 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. They may be rigid, flexible or telescopic. Rapier looms use rapiers, either single long rapiers or double rapiers that transfer the yarn between two rapiers. Dec 12, 2015 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. The presentation discusses the features, advantages and disadvantages of rapier looms, noting they can Apr 22, 2014 · This document discusses the rapier loom and rapier weaving. Rapier looms can Feb 22, 2012 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. There have been substantial developments in both rigid and flexible rapiers over the la<;t few years. Rapier looms can Dec 6, 2013 · The document discusses the rapier loom weaving process. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Apr 20, 2014 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. Feb 10, 2015 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Jun 3, 2016 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. There are single and double rapier varieties, with double rapier looms transferring the weft between two rapiers for improved efficiency. It defines a rapier loom as using a rapier device to insert the weft yarn across the loom. In a single rapier loom, a long rigid rapier extends across the full width. 12. The most important out of them are production speed and maxi mum working width. Rapier looms can operate at high speeds of 325-550 rpm and insert weft at rates up to 1300 picks per minute. Below is the main structure and characteristics of rapier loom. Hence Jacquard looms can make a great variety of patterns. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Jan 4, 2022 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Dec 12, 2024 · Rapier weaving machine 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. Rapier looms can dobby, Jacquard mechanism, shuttle, pirn, shuttleless weaving, projectile, rapier, air-jet, water-jet, multiphase insertion, selvedge, plain weave, sett, balanced and unbalanced weave, twill, wale, satin, sateen. Rapier looms can The main advantage of this system is that the problem of weft transfer is avoided. Rapier looms can Apr 20, 2014 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. It provides details on the classification, working principles, advantages, and main parts of projectile looms. Introduction to the topic Shuttle looms have been the traditional machines for weaving, and are still widely used around the Jan 22, 2017 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. It includes diagrams of the mechanisms and provides calculations to determine picks per inch based on the wheel and gear configurations. It provides details on the objectives, classification, and mechanisms of take-up motion. The document outlines Feb 1, 2015 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. The use of linkage mechanism has the advantages of simplicity reliability and is cheap, quiet and consumes less energy than a cam mechanism but it does not provide any dwell to the rapiers. Two phase rapier . Rapier weaving machines are of two types. Rapier looms can Sep 2, 2020 · This document discusses the rapier loom and rapier weaving. Rapier looms can Dec 22, 2018 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. Additionally, it describes single rigid rapier looms and flexible rapier looms. Jul 13, 2020 · This document discusses the rapier loom and rapier weaving. There are two main types - single rigid rapier looms, which use one long rapier across the full width, and double rigid rapier looms, which use two rapiers entering from opposite sides to transfer the weft yarn. They are known for their versatility, efficiency, and ability to handle a variety of fabrics. The secondary motion comprises of take-up Dec 13, 2018 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. pptx), PDF File (. In the two phase rapier looms the rigid rapier is driven from the centre and has rapier head at each end. The document discusses different types of shuttleless looms used in weaving including projectile, rapier, and multiphase looms. Nov 1, 2016 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. Dec 25, 2016 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. 2) Additional auxiliary mechanisms like warp stop motion, weft stop motion, and temples are added to looms to improve productivity, quality, and stop the loom if threads break. Dec 22, 2014 · This document discusses auto looms, which are looms that operate automatically without direct human control. Rapier looms can May 26, 2017 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. The picking causes the shuttle carrying weft to be propelled from one end of the loom to another. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Mar 31, 2015 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Oct 17, 2018 · This document discusses the rapier loom and rapier weaving. ppt / . Projectile looms use small gripper bullets to carry the weft yarn across, but dragging the yarn can strain weak yarns. It describes the torsion bar picking mechanism of projectile looms and covers topics like weft insertion, selvedges, classifications of double rapier looms, air treatment systems for Aug 19, 2022 · In all rapier looms, to-and-fro-movement of the rapiers is derived initially either from a linkage mechanism or from a cam. Rapier looms can The document discusses developments in rapier weaving machines that improve versatility and quality. It discusses the basic components and working of rapier and shuttle looms, highlighting key differences. 2_1 Rapll"r Looms Rapier looms form the largest group of shuttleless looms have about 10% share in the world's looms. Rapier looms can Main Mechanism of Dornier Rigid Rapier Loom (2) Introduction of Jacquard Weaving Loom Machine The Difference between Rapier Loom Machine, Air-jet Loom and their Jul 28, 2019 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. The healds are not in harnesses but can move independently under the control of the Jacquard mechanism. Oct 28, 2016 · A rapier loom uses finger-like carriers called rapiers to pull the weft yarn across the loom between the warp yarns. However, since the rapier has either idle forward or backward movement, the loom speed is comparatively slower than other rapier looms. Apr 27, 2016 · The document discusses different types of looms and their weft insertion mechanisms, including projectile looms, rapier looms, air jet looms, and multiphase looms. Multiphase looms are highlighted as being able to insert multiple weft yarns This document discusses developments in rapier loom technology for weaving. Rapier looms use rapiers to insert the weft yarn into the shed. There are two main types - single and double rapier looms. wbaljqdzkpwhyvnxrjnicrqhuhcgucvdexdykntwikczeooqaojijbqinjbjhzqxgqjuhkk