Presentation Name : Comprehension Study on Rib circular Knitting Machine Submitted by : Abdullah Al Mukit Shoaib, student of northern university Bangladesh Submitted to : Farhana Afroz, Lecturer at Northern University Bangladesh

1. Presentation Name: A Comprehensive
Study on Rib Circular Knitting machine.
Submitted by: Abdullah All Mukit Shoaib
(ID: BTX140200344) and MD. Tarek Hasan
Ridoy (ID: BTX140200358)
Submitted to: Farhana Afroz, Lecturer at
Northern University Bangladesh
Submitt Date:

2. Features of rib fabric
1. Rib has a vertical cord appearance.
2. 1×1 rib has the appearance of technical face of plain
fabric
3. Relaxed 1×1 rib is theoretically twice as thick and 12 the
width of an equivalent plain fabric.
4. It is more expensive fabric to produce than plain fabric.
5. It can be unravel from the end knitted last by the free
loop head through to the back of each stitch. 6.It is a
heavier structure.
7. It has very little curling tendency.
8. Rib structures are elastic from fitting and retain warmth
better than plain structure.

3. Rib Fabric

4. Rib fabric

5. Rib fabric

6. Structures of different Rib Gating
1. Milano Rib

7. Stitch Pattern of Milano Rib
• Feed 1 : Knit on all dial and cylinder needles
• Feed 2 : Knit on all dial needles (only back
loops)
• Feed 3 : Knit only on all cylinder needles (only
face loop)

8. 2. Double Pique
Double Pique : Two varieties of double pique are
French pique and Swiss pique. Both these are
produced on a 4 feed cycle. Both the structure
are almost similar and there is a little difference
in knitting cycle. Both are heavy, stable structures
and they do not curl. These structures are also
termed as drap or sheet fabrics because of the
poor width wise extensibility.

9. French Pique

10. Stitch Pattern of French Pique
Feed 1 : Knit on all short and long needles in
cylinder and only on short needles in dial.
Feed 2 : Knit only on long needles in dial (no
knitting cylinder needle)
Feed 3 : Knit on all short and long needles in
only on long dial needles.
Feed 4 : Knit only on short needles in dial

11. Swiss pique

12. Swiss Pique: The fabric is produced with smaller
and finer loops than French double pique.
Stitch Pattern of Swiss Pique
• Feed 1 : Knit on all long and short needles in
cylinder and only on long needles in dial
• Feed 2 : Knit on all long dial needles only
• Feed 3 : Knit on all long and short needles in
cylinder and only on short needles in dial
• Feed 4 : Knit on all short dial needles only

13. 3. Pique Poplin
Pique Poplin : It is a six feed structure with knit and float stitch
combination. At feeds 2,3,5 and 6, there is no knitting with cylinder
needles.

14. Stitch Pattern of Pique Poplin
• Feed 1 : Knit all needles of cylinder and only
short needles of dial
• Feed 2 : Knit only long needles of dial
• Feed 3 : Knit only short needles of dial
• Feed 4 : Knit all needles of cylinder and only
long needles of dial
• Feed 5 : Knit only short needles of dial
• Feed 2 : Knit only loop needles of dial

15. 4. Evermonte

16. Evermonte: In this eight feed repeat structure,
four courses (1,2,5 and 6) use every other
needle on both needles beds. Course 1 and 2
tuck on dial and courses 5 and 6 tuck on
cylinder. These tuck stitches cause pearl effect
to the fabric.

17. • Feed 1 : Knit all short needles of cylinder and tuck
all long needles of dial
• Feed 2 : Knit all long cylinder needles and tuck all
short dial needles
• Feed 3 : Knit all dial needles only
• Feed 4 : Knit all cylinder needles only
• Feed 5 : Tuck all long cylinder needles and knit all
short dial needles
• Feed 6 : Tuck all short cylinder needles and knit
all long dial needles
• Feed 7 : Knit all cylinder needles only
• Feed 8 : Knit dial needles only

18. Rib circular knitting machine : The structure
in which the face and back loop occurs along to
the coarse successively but all the loops of a wale
is same is called rib structure. The circular knitting
machine which is used to produce the rib
structures is known as rib machine.

19. Feature of rib circular knitting machine :
01. In a dial cylinder rib machine there is one set of
needles on the circumference of the vertical cylinder and
another set of needles on a horizontal dial.
02. So two sets of needles remain at the right angle
with each other.
03. Here both the dial and cylinder rotates but the
cam systems with the feeders remain stationary.
04. The dial needles get its motion from its butt
which is placed on the cam truck.
05. cylinder needles moves vertically and dial
needles moves horizontally. Cylinder needles also get
its motion from it.

20. Fig : Yarn to fabric path diagram of Rib Circular Knitting Machine

21. Description of yarn fabric path diagram : Is
the circular knitting m/c ,yarn is supplied from
the set of packages which is placed in the creel.
When supplying the yarn from the packages
tensioner & anti snail device are placed over & in
contact with the yarn. The yarns is fed from the
feeder to the needles of the needles of the dial &
cylinder. In successively, the knitted fabric is
produced by the action of needles, cam & sinker.
The produced knitted fabric is passed over & in
contact with the fabric spreader & fabric
withdraw roller. Finally the fabric is wound in the
fabric winding roller

22. Yarn fabric path diagram flow chart
Creel
Feeder
Needles
fabric spreader
fabric withdraw roller
fabric winding roller

23. Functions of rib circular machine's different part
1.Creel:Creels are the knitting elements which carry
the yarn packages to feed the knitting zone.
2.Feeder:The feeders feed the yarn into the needles
hooks and control the needle latches in their position
while the needles attain their position.
3.Dial:Dial is the upper steel needle bed used in double
jersey knitting mc. Into the grooves of the dial ,the
needles are mounted horizontally and near allowed to
move radically in and out by their dial cam.
4. Guide: Guides control the yarn path which is very
necessary

24. Functions of rib circular machine's different part
5. Needle: It is the principal element of knitting m/c. The
function of the needle to retain old loop & to receive the
new loop.
6. Cam: The cams are the mechanical devices which
convert the rotary m/c drive into a suitable reciprocating
action for the needles.
7. Cylinder: The cylinder is a steel circular bed having
grooves on its outer periphery where the needles are
mounted.
8.Fabric Spreader: A simple fabric spreader is a solid
wooden plate, placed above the take down rollers & held
in position by the fabric tube.
9.Cloth roller: this mechanism withdraw the fabric from
the needles & winds them into cloth roller

25. Fig: Knitting action of rib circular knitting machine

26. Knitting action of the rib circular machine
1 .Rest position: The rest position for the cylinder and dial
needles. Needles are constant. Loops are present in their
hooks. Latches are close.
2. Tucking position for dial needle: The dial needle moves
forward. Loop is present on the latch. Latch is open.
Cylinder needle is in the rest position.
3. Tucking position for cylinder needle: The cylinder needle
moves forward. The cylinder loop is present on the latch.
Here dial needle holds down the fabric on the cylinder
needle. So that the latch of the cylinder needle is opened.
4. Clearing position of dial needle: The dial needle further
moves forward to clear the old loop from its latch. Here dial
latch is open.

27. Knitting action of the rib circular machine
5 .Clearing position of cylinder needle: The cylinder needle
will further move forward to clear the old loop from its
latch. Cylinder latch is open.
6 .Yarn presenting position: The cylinder and dial needles
are pulled back again and they move into their yarn
presenting position. The newly presented yarn is laid in the
open needle hooks of both the needles.
7. Cast on position: The cylinder and dial needles are
pulled further and move into their cast on position. Here
the loops lie over the closed needle head and the newly
presented yarn is held in the closed needle head.
8 .Knock-over position: The cylinder and dial needles are
pulled further .The new yarn is drawn through the loops of
the both needles. The loops are knocked-over as stitches
and new loops are formed out of the yarn presented.

28. Courtesy
• Knitting Technology by David J Spencer
• http://www.slideshare.com
• http://www.textilelearner.blogspot.com
• Lecture Sheet of University