Welcome To My Presentation

Presented By:-

Name: Md. Yousuf Hossain.

Id No. : 120103063

4/23/2015 1

Weft Knitting Machine (Single Jersey,

Rib & Interlock)

Presentation on

4/23/2015 2

Weaving-

Weaving is a process of manufacturing a fabric by the interlacement of ‘Warp’ and ‘Weft’ yarns.

Knitting-

Knitting is a process of manufacturing a fabric by the intermeshing of loops of yarns.

Knitting Weaving 4/23/2015 3

Types of Knitting Technology-

There are two main forms of

knitting technology-

1. Weft knitting

2. Warp knitting

1. Weft Knitting

2. Warp Knitting 4/23/2015 4

Classification of weft knitting machine

According to the frame design

& needle bed arrangement.

1. Circular knitting machine.

2. Flat knitting machine Circular Knitting

Machine

Flat Knitting Machine 4/23/2015 5

Classification of weft knitting machine

According to the no. of

needle bed.

1. Single jersey circular

knitting machine.

2. Double jersey

circular knitting

machine.

Single jersey Circular Knitting Machine

Double jersey circular

knitting machine 4/23/2015 6

Classification of weft knitting machine

According to the end product of the weft

knitting machine.

1. Fabric machine.

2. Garments machine.

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Features of single jersey circular knitting machine-

• Single jersey circular knitting machine

has normally rotating (clockwise)

cylindrical one set of needle bed.

• Generally latch needles are used.

• Generally machine gauge is 24. It can be

10 to 36.

Single jersey circular

knitting machine 4/23/2015 8

Features of rib circular knitting machine-

• In rib circular knitting machine,

there are two set of needle.

• One set of needles are mounted on

a vertical cylinder & other set of

needles are mounted on horizontal

dial.

• The dial needles are midway

between the cylinder needles.

• Generally needle gauge is 18.

Rib circular knitting

machine 4/23/2015 9

Features of interlock circular knitting machine-

• In interlock circular knitting

machine, there are two needle bed.

• One set of needles are mounted on a

vertical cylinder & other set of

needles are mounted on horizontal

dial.

• The dial needles are face to face

between the cylinder needles.

• Generally needle gauge is 20.

Interlock circular knitting

machine 4/23/2015 10

Needle:

Needle is a tiny hocked elements

used for loop formation.

Needle used for knitting are three

types

Functions:

• To feed the yarn.

• Loop formation.

• To hold the old loop.

Fig: Needle

Main parts of knitting machine & their functions-

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Cam (knit, tuck, miss)

– Each needle action is

obtained by means of cams

acting on the needle butt.

– There are three types of cam.

(knit, tuck, miss)

Functions:

– Help to produce knit, tuck &

miss loop.

Main parts of knitting machine & their functions-

Fig: Cam

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Sinker:

– Sinker is a thin metal plate which is

placed at right angle between the

adjoining needles.

– Sinker is used in single jersey

circular knitting machine.

Functions:

• Loop formation.

• Holding down.

Main parts of knitting machine & their functions-

4/23/2015 13

Main parts of knitting machine & their functions-

Dial

– Dial is a upper steel needle bed used in double

knit machine.

– Dial is used in double jersey (rib or interlock)

circular knitting machine

Fig: Dial 4/23/2015 14

Main parts of knitting machine & their functions-

VDQ (Variable diameter for quality) pulley

–To control the GSM.

– It gives motion to the positive feeder

Fig: VDQ Pulley

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Main parts of knitting machine & their functions-

Toothed belt

– To transfer the motion from

VDQ pulley to positive

feeder

Motor

– To produce the motion to the

machine.

Sensor

– To identify the breakage of

yarn.

Fig: Toothed belt

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Thanks everyone for watching this presentation

4/23/2015 17