This presentation discusses different types of weft knitting machines. It begins with an introduction to the presenter and defines the processes of weaving and knitting. It then describes the two main types of knitting technology as weft and warp knitting. Weft knitting machines are classified based on their frame design, number of needle beds, and the type of end product produced. Specific weft knitting machines - single jersey, rib, and interlock circular machines - are explained in detail, outlining their key features. Finally, the main parts of knitting machines such as needles, cams, sinkers, and dials are defined along with their functions in the knitting process.

1. Welcome To My
Presentation
Presented By:-
Name: Md. Yousuf Hossain.
Id No. : 120103063
4/23/2015 1

2. Weft Knitting Machine (Single Jersey,
Rib & Interlock)
Presentation on
4/23/2015 2

3. 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.
KnittingWeaving4/23/2015 3

4. 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

5. 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
Machine4/23/2015 5

6. 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 machine4/23/2015 6

7. Classification of weft knitting machine
According to the end product of the weft
knitting machine.
1. Fabric machine.
2. Garments machine.
4/23/2015 7

8. 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 machine4/23/2015 8

9. 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
machine4/23/2015 9

10. 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
machine4/23/2015 10

11. 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-
4/23/2015 11

12. 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
4/23/2015 12

13. 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

14. 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: Dial4/23/2015 14

15. 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
4/23/2015 15

16. 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
4/23/2015 16

17. Thanks everyone for
watching this
presentation
4/23/2015 17