jaquard presentation

8/13/2019 Jaquard Presentation

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Advance YarnFabric Manufacturing

Shedding Mechanism Of

Sulzer Projectile LoomHP7300

In this report we are presenting about thejacquard shedding mechanism of manufacturer

STAUBLI Model no. dx-100. It is synchronizedwith a projectile loom of manufaturer SULZER

model no. HP7300.

Danyal Rashid Khan TE-038

Tahreem Wazir TE-046

Farah Usmani TE-052

S.M. Waris TE-303

2/13/2014

Submitted To: Dr. Bilal Zahid


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CONTENTS

Basic Mechanisms Double Lift Double Cylinder Jaquard Main Components Of Staubli Dx100

o The Moduleo Control Box( JC6 Controller)o The Components Of The Jacquard Modules Are

CLI Card Cords Hooks Pulleys

o Comber Boardo Lubrication Systemo Selvedge

Synchronization Shedding Mechanism Of Jacquard Dx100 Specifications Advantages Limitations


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In this report we are presenting about the jacquard shedding mechanism of

manufacturer STAUBLI Model no. dx-100. It is synchronized with a projectileloom of manufaturer SULZER model no. HP7300.

MECHANISMS:

There are three principle

mechanism in a jacquard

shedding:

Drive mechanism(Cams)

Selection mechanism(Control Box)

Lifting mechanism(Modules)

DOUBLE LIFT DOUBLE CYLINDER JACQUARD:

There are two cylinders in this arrangement one for even numbered frames and one for odd

numbered frames. It has two needles and two hooks for each harness cord and each end in the

repeat. This system forms a semi open shed and runs at higher speeds.


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MAIN COMPONENTS OF STAUBLI Dx100:

Control box( JC6 Controller) :

It is configured prior to first operating the machine inorder to match it with the characteristics of the jacquard

machine that it will control. This operation is normally

performedonly once. Shutdowns occur has no effect on the

saved configuration.

It consists of:

A CPU microprocessor board to control alloperations through integrated software

A power supply An internal storage unit0.

A USB compatible port for reading or saving files. An input-output board and an adapter board

according to weaving machine.

The Module:

The module ensures the connection between the harness and the

lifting mechanism.The Module of DX100 is compact, wear

resistant and consumes very less energy.The module is equipped

with CLI card, two pulleys, number of hooks, electromagnets,cords.


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THE COMPONENTS OF THE JACQUARD MODULES ARE :

The CLI Card:

The CLI (Command Line Interface) card is an electronic chip, which controls the magnetizationand de- magnetization of the hooks.

The Cords:

One end of the cord is attach to the hook while the other end is attach to another hook (hook

which retains either when magnetize or demagnetize.

The hooks:

There are actually three hooks (two upper and one lower) working in a module. Both of them are

attached to the both ends of the cords. One hook is is used to hooked when magnetized or

demagnetized. While the other one is used to hooked to the wires (jaala) which contains headleand is then attach to the lingos.

The pulleys:

The pulleys or the ball bearing is used to lift the warp yarns.The pulleys moves up and down.

Comber board:

The comber board is the piece of hardboard, usually placed 1 to 2 meter below the bottom of thehooks. It is made and drilled to customer specifications. The number and order of holes depends

upon the number of hooks in jacquard head.

Lubrication System:

In jacquard (STAUBLI) the lubrication is required for cams, bevel gears, timing belts and forbearings which is done by dropping oil drops. The oil used is Delo shell 440.

Selvedge:

A 2/2 tuck-in type selvedge is done in jacquard (STAUBLI) shedding. 48 chords are provided for

this purpose.


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SYNCHRONIZATION:

Synchronized with the loom through the drive of cardan shaft and fully-enclosed spiralbevel gear box.

Driving mechanism is Timing belt drive which reduces noise. Timing belts use teeth that mesh with grooves in a pulley to drive the system. It brings

the cylinder against the board at desired time. There is no slippage which will causespeed variations, thus allowing drives to be timed very accurately.

Timing pulley then gives drive to crank shaft which converts linear energy into rotationalenergy and gives drive to cylinders.

The knives are mounted in the knife frame which reciprocates vertically once every pick. Knives are lifted by a rod operating according to the driving of the cylinder

SHEDDING MECHANISM OF JACQUARD Dx100:

The movable hooks move along the motion of theknives.

An electromagnet is used for the engagement anddisengagement of the hooks.

When the electromagnet is magnetized it allows themovable hook to enter and then it demagnetizes so the

hook is stuck with the retainable hook.

There are two sets of pulleys attached to each other asshown in the figure. The lower pulley has one of itsend fixed, this allows the cord to pull the yarn up

through the cord.


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Knife carries the hook when the magnet is magnetized and then it demagnetizes so thehook is stuck with the retaining hook and then the other knife takes the second hook and

attaches it with the other retaining hook through the same principle causing both the

hooks to attach.

Further motion causes the lower pulley to rise and thus causes the yarn to be pulled upaccording to the defined design fed into the machine.

SPECIFICATIONS:

Model DX100

Manufacturer Staubli

Modules 336 (present 176)

1 module 8 cords

No Of Cords 1408

No of frames 161 cord 4 warp ends

No of warp ends 5623 (4 x 1408)

No. of cords for selvedge 48

Software version JC6

ADVANTAGES:

Easy maintenance No point needing lubrication Few moving parts Modular construction and thus easy access Low vibration even at high speed Reduced setting time, as the machine is electronically controlled and therefore no paper is

needed.

LIMITATIONS:

Increasing the no. of module assembly is very complicated. It is very expensive.

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