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Rapier Loom
MD SOHEL KHAN
Department of Textile Engineering
Port City International University
Loom
 1.What is loom?
 Loom is a mechanical device which is used
to produce woven fabric by the insertion of
warp and weft yarn. In weaving technology
; loom is the principle mechanical device
for weaving. Various types of loom are
used for doing the weaving task. Various
types of designed fabric are produced by
changing the machine setting.
Types of Modern Loom
 Rapier Loom
 Projectile Loom
 Air Jet Loom
 Water Jet Loom
 Multiphase Loom

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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 air jet looms, and calculations for fabric and yarn production.

multi-phase loomprojectile loomrapier loom
Multiphase weaving
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Multiphase weaving

The document discusses multiphase weaving machines. It describes two principles of multiphase weaving: the filling direction shed wave principle and the warp direction shed wave principle. The filling direction principle involves forming multiple sheds in the filling direction to allow simultaneous insertion of multiple wefts. The warp direction principle involves opening multiple sheds simultaneously across the warp width. It then focuses on the M8300 multiphase weaving machine, which uses the warp direction principle to insert 4 picks simultaneously at speeds over 5000 m/min, significantly faster than single phase machines.

Roving
RovingRoving
Roving

The document discusses the roving frame machine, which comes after the draw frame in the spinning process. The roving frame drafts sliver from draw frame cans into a thin roving strand and applies a light twist. It operates by drafting the sliver, guiding it through the flyer to apply twist, and winding the roved strand onto bobbins. While complicated, the roving frame produces packages of roving suitable for input to the ring frame. Efforts to eliminate this step have not succeeded due to the high drafts required in ring frames.

Rapier Loom
Rapier loom is a
shuttleless weaving
loom in which the
filling yarn is carried
through the shed of
warp yarns to the
other side of the
loom by finger like
carriers called
rapiers.
continued
 A rapier loom uses a rapier to pull the weft yarn across the
loom.
 It can be a single rapier or double rapier.
 For a single rapier, a long rapier device is required to extend
across the full width of warp.
 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
Rapier loom
Single Rigid rapier
 The rigid rapier is a metal or composite bar usually with a circular cross
section
 The rapier enters the shed from one side, picks up the tip of the weft yarn
on the other side and passes it across the weaving machine whileretracting
 Single rapier carries the yarn in one way only and half of the rapier
movement is wasted
 Rapier length is equal to the width of the weavingmachine
 Requires high mass and rigidity of the rapier - to ensure
straight movement of the rapier head
 Single rapier machines are not popular

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Describes about the picking mechanism in weaving machine and types of picking in shuttle and projectile loom

pickingshuttle pickingweaving
Shuttle less weaving
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This document discusses drawbacks of conventional shuttle looms and advantages of shuttleless looms. Some key drawbacks of conventional looms include large shuttle mass wasting energy, unguided shuttle flight causing damage, and varying shuttle mass affecting weft tension. Shuttleless looms overcome these issues by separating weft storage from transport, allowing for smaller, lighterweight carriers and higher loom speeds with wider reeds for improved productivity and fabric quality. Functional principles of commercially successful shuttleless systems include using partially guided solid carriers or pressurized fluid jets to transport weft across the shed in a controlled manner.

gate peparation
Single Rigid rapier
Continued….
 Advantage
• Problem of weft transfer does not arise and
normal range of fabric can be woven.
 Disadvantage
• One movement of rapier is wasted.
• Loom speed is very slow.
• The maximum weft insertion rate is 400
m/min
Single Rigid rapier
Double Rigid Rapier
 Two rapiers enter the shed from the opposite sides and meet at thecenter.
 The double rapier weaving machines are subdividedinto:
• One-sided weft insertion. One rapier is the transmitting rapier the other
is the taker rapier.
• Double-sided weft insertion. Each rapier acts alternately as the giver
and the taker.
 The giver picks up the yarn from the accumulator at one side, brings it
to the center of the shed, transfers it to the second rapier(taker).
 As the taker retracts, carries the yarn to the otherside.
 In a twin-rapier system, two rapiers move together from the same driving
source, as is necessary in face-to-face (i.e., double-plush) weaving

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This presentation summarizes the Jacquard shedding mechanism. It introduces the four presenters and provides background on the Jacquard loom, which can produce complex woven designs through individual control of warp threads. The presentation then covers the scope of Jacquard shedding, including its ability to control thousands of yarns and produce intricate designs. It also classifies different types of Jacquard looms based on their lifting capacity, design capacity, shed formation, and other features. Key aspects of the single lift Jacquard mechanism are explained. Advantages and disadvantages of the Jacquard loom conclude the presentation.

technologyteachingengineering
Picking and its classification
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This document discusses different types of picking and picking mechanisms used in weaving. It begins with an introduction to picking, which is the process of passing the weft yarn through the warp shed during weaving. It then describes various picking mechanisms including overpicking, underpicking, and cone overpick and underpick mechanisms. The document provides details on how these different mechanisms work to insert the weft yarn through the shed. It concludes with advantages and disadvantages of different weft insertion methods like projectile, rapier, air jet, and water jet looms.

fabric manufacturing processyarn picking processwoven fabric
Double Rigid Rapier
Mechanism of Rapier loom
 A rapier is a rod or steel tape which carries the weft
yarn. In the other end, the rapier connected to the
control system.
 The rapier moves through the warp yarn by carrying
weft yarn from one end to other.
 There are two types of rapier loom. One types of rapier
loom consist a rapier in one end.
 The rapier is then retracted, leaving the new filling in the
place.
 Other types of rapier also available, in which the rapier
carries the weft yarn to the centre and the other rapier
from the opposite side carries the weft yarn from the
centre.
Continued….
 There are two types of rapier loom. One is flexible
and other is rigid rapier loom. The rigid loom takes
more space than rigid loom.
 Flexible rapier can be coiled, if it is too flexible
than it will buckle. The double rapier is used more
frequently than single rapier.
 A rapier machines can be operate at speeds up to
1300 meters of weft per minute. This type of rapier
is efficient. The noise level is high because it
speeds about 200 to 260 ppm.
Structure of rapier loom

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Double lift double cylinder jacquard
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This document discusses a double lift double cylinder jacquard, which uses two cylinders that move in opposite directions to control two hooks connected to each warp yarn. It operates at 180 picks per minute, with each cylinder controlling half the picks. The system forms a semi-open shed and allows for higher speeds, longer sets of cords, and less vibration than single cylinder systems. However, its main disadvantage is that if one cylinder gets out of sync with the other, it can weave the wrong design.

Main parts
 12.Crank shaft.
 3.Bottom shaft.
 4. Grippers tapes.
 5. Rapier Loom Sensors.
 6. Rapier Loom Cutters.
 7. Rapier Loom Driving Wheel
 8. Rapier Loom Tapes
 .Motor.
Features
 High on quality
 Low cost
 Stable weft insertion
 PLC Base control
panel
 Rigid design
Continued….
Specification of rapier weaving machine is given below –
Specifications Name Specifications Value
Product Category Weaving
Machine Category Loom rapier weaving machine
Product Name Rapier Loom Machine
Product Model According to Manufacturer
Product Class New
Origin China/India/Others
Brand/Manufacturer Name of Manufacturer
Agent In Bangladesh No/Yes
Power 1.5~2.2kw
Specification
Temperature Normal
Certification SGS/Others
Production Capacity 100 Set/Sets per Month
Fidder 6/8
Droppers 10000pcs
Work Width 2300 (mm)
Warp Beam Diameter 600mm
Drum Diameter 300mm
Maximum Speed 280rpm
Weft Insertion 160-180m/min
Color Selection 6 color

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The parallel winding of warp ends from many winding packages (cone, cheese) on to a common package (warp beam) is called warping.

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The document provides information about take up motion in weaving looms. It discusses the objectives and classification of take up motion. It describes the mechanisms of 7-wheel and 5-wheel take up motions. The 7-wheel take up motion uses 7 gears to continuously wind fabric onto the cloth roller, while the 5-wheel uses 5 gears for an intermittent winding motion. Calculations are provided for determining picks per inch using the gear ratios and dimensions of each take up type.

take up mechanism in weavingweaving take up
Continued….
Color Selection 6 color
Spindle Number 392
Heald Frame 14
Motor Power 1.5 /2.0 Kw
Dimension 4450*2300*3100mm
Weight 3600kg
Description
The rapier transfer box build
with the most helix gears is
stable and dependable. Rear
beam tension structure is used
to balance tension of warp for
high density fabrics
Advantage
 Less floor space requirement , spatial
productivity is higher.
 Flexible rapier band are wound on
wheels placed in semi-circular channels
when they are withdrawn outside the
shad, and the result is wide working
widths up to 5m.
Disadvantages
 The warp threads should not be damages by
the ribbed guides .
 Guiding system may lid the ink breakage due
to not failure .
 Using fancy yarn in warp direction is almost
impossible.
 Wasted movement.
End Product
 Very light fabrics with 20 GSM
to heavy fabrics with around
850 GSM.
 Rapier machines are widely
used for household textiles
and industrial fabrics.
 Rapier machines are
designed for universal uses
like – Weave classic Wool,
Cotton, Man-made fibres, fine
Silk and Fancy yarns.

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Beat-up Mechanism of Fabric
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The beating-up mechanism is used in weaving to push the newly inserted weft pick to the fell of the cloth. It consists of a reed fixed to a sley that is given a quick motion towards the fell by cranks connected to a crankshaft. The main parts include the crankshaft, crank, connecting arm, reed cap, reed, sley race, sley, and sleysword. The sley receives a reciprocating motion from the rotating crankshaft via the crank and connecting arm, which pushes the reed and new weft pick to the fell. Some looms use a double beating-up mechanism with two arms to give two blows per

fabricbeat-up mechanismmachines
Rapier loom
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The document describes Abdullah Al Mahfuj's profile and a presentation on a rapier loom. It defines a rapier loom as using a rapier device to insert the weft yarn across the loom. There are two main types - single and double rapier looms. The presentation discusses the features, advantages and disadvantages of rapier looms, noting they can produce fancy fabrics but at a higher cost than other looms.

Conclusion
Rapier machines weave more rapidly
than most shuttle machines but more
slowly than most other projectile
machines. An important advantage of
rapier machines is their flexibility, which
permits the laying of picks of different
colours. They also weave yarns of any
type of fibre and can weave fabrics up to
110 inches in width without modification.
THANK YOU

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Rapier loom

  • 2. MD SOHEL KHAN Department of Textile Engineering Port City International University
  • 3. Loom  1.What is loom?  Loom is a mechanical device which is used to produce woven fabric by the insertion of warp and weft yarn. In weaving technology ; loom is the principle mechanical device for weaving. Various types of loom are used for doing the weaving task. Various types of designed fabric are produced by changing the machine setting.
  • 4. Types of Modern Loom  Rapier Loom  Projectile Loom  Air Jet Loom  Water Jet Loom  Multiphase Loom
  • 5. Rapier Loom Rapier loom is a shuttleless weaving loom in which the filling yarn is carried through the shed of warp yarns to the other side of the loom by finger like carriers called rapiers.
  • 6. continued  A rapier loom uses a rapier to pull the weft yarn across the loom.  It can be a single rapier or double rapier.  For a single rapier, a long rapier device is required to extend across the full width of warp.  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
  • 8. Single Rigid rapier  The rigid rapier is a metal or composite bar usually with a circular cross section  The rapier enters the shed from one side, picks up the tip of the weft yarn on the other side and passes it across the weaving machine whileretracting  Single rapier carries the yarn in one way only and half of the rapier movement is wasted  Rapier length is equal to the width of the weavingmachine  Requires high mass and rigidity of the rapier - to ensure straight movement of the rapier head  Single rapier machines are not popular
  • 10. Continued….  Advantage • Problem of weft transfer does not arise and normal range of fabric can be woven.  Disadvantage • One movement of rapier is wasted. • Loom speed is very slow. • The maximum weft insertion rate is 400 m/min
  • 12. Double Rigid Rapier  Two rapiers enter the shed from the opposite sides and meet at thecenter.  The double rapier weaving machines are subdividedinto: • One-sided weft insertion. One rapier is the transmitting rapier the other is the taker rapier. • Double-sided weft insertion. Each rapier acts alternately as the giver and the taker.  The giver picks up the yarn from the accumulator at one side, brings it to the center of the shed, transfers it to the second rapier(taker).  As the taker retracts, carries the yarn to the otherside.  In a twin-rapier system, two rapiers move together from the same driving source, as is necessary in face-to-face (i.e., double-plush) weaving
  • 14. Mechanism of Rapier loom  A rapier is a rod or steel tape which carries the weft yarn. In the other end, the rapier connected to the control system.  The rapier moves through the warp yarn by carrying weft yarn from one end to other.  There are two types of rapier loom. One types of rapier loom consist a rapier in one end.  The rapier is then retracted, leaving the new filling in the place.  Other types of rapier also available, in which the rapier carries the weft yarn to the centre and the other rapier from the opposite side carries the weft yarn from the centre.
  • 15. Continued….  There are two types of rapier loom. One is flexible and other is rigid rapier loom. The rigid loom takes more space than rigid loom.  Flexible rapier can be coiled, if it is too flexible than it will buckle. The double rapier is used more frequently than single rapier.  A rapier machines can be operate at speeds up to 1300 meters of weft per minute. This type of rapier is efficient. The noise level is high because it speeds about 200 to 260 ppm.
  • 17. Main parts  12.Crank shaft.  3.Bottom shaft.  4. Grippers tapes.  5. Rapier Loom Sensors.  6. Rapier Loom Cutters.  7. Rapier Loom Driving Wheel  8. Rapier Loom Tapes  .Motor.
  • 18. Features  High on quality  Low cost  Stable weft insertion  PLC Base control panel  Rigid design
  • 19. Continued…. Specification of rapier weaving machine is given below – Specifications Name Specifications Value Product Category Weaving Machine Category Loom rapier weaving machine Product Name Rapier Loom Machine Product Model According to Manufacturer Product Class New Origin China/India/Others Brand/Manufacturer Name of Manufacturer Agent In Bangladesh No/Yes Power 1.5~2.2kw
  • 20. Specification Temperature Normal Certification SGS/Others Production Capacity 100 Set/Sets per Month Fidder 6/8 Droppers 10000pcs Work Width 2300 (mm) Warp Beam Diameter 600mm Drum Diameter 300mm Maximum Speed 280rpm Weft Insertion 160-180m/min Color Selection 6 color
  • 21. Continued…. Color Selection 6 color Spindle Number 392 Heald Frame 14 Motor Power 1.5 /2.0 Kw Dimension 4450*2300*3100mm Weight 3600kg Description The rapier transfer box build with the most helix gears is stable and dependable. Rear beam tension structure is used to balance tension of warp for high density fabrics
  • 22. Advantage  Less floor space requirement , spatial productivity is higher.  Flexible rapier band are wound on wheels placed in semi-circular channels when they are withdrawn outside the shad, and the result is wide working widths up to 5m.
  • 23. Disadvantages  The warp threads should not be damages by the ribbed guides .  Guiding system may lid the ink breakage due to not failure .  Using fancy yarn in warp direction is almost impossible.  Wasted movement.
  • 24. End Product  Very light fabrics with 20 GSM to heavy fabrics with around 850 GSM.  Rapier machines are widely used for household textiles and industrial fabrics.  Rapier machines are designed for universal uses like – Weave classic Wool, Cotton, Man-made fibres, fine Silk and Fancy yarns.
  • 25. Conclusion Rapier machines weave more rapidly than most shuttle machines but more slowly than most other projectile machines. An important advantage of rapier machines is their flexibility, which permits the laying of picks of different colours. They also weave yarns of any type of fibre and can weave fabrics up to 110 inches in width without modification.