Rib Circular Knitting Machine.

Experiment Name: - Study on the Rib circular knitting machine.

Introduction:

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.

Machine specification:

Machine model → cmoan

Manufacturer → Paolo Orizio

Made in → Italy

No of feeders’ → 40

Cylinder diameter →20”

Needle gauge → 18 / inch

Machine parts:

 Yarn career

 Break stop motion

 Yarn guides

 Dial

 Cylinder

 Dial cams

 Cylinder cams

 Dial needles

 Cylinder needles

 Oiling and air following devices

 Sensors

 Take up rollers

 Batch rollers

 Motor

 Belts

 Pulleys and gears

 Clutches

Description of the machine:

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. So two sets of needles remains at the right angle with each other. In dial cylinder machines the dial and cylinder rotates but the cam systems with the feeders remain stationary.

The dial needles get its motion from its butt who is placed on the cam truck. This cam truck is formed by different cam placed on a cam plate.

During the rotation of the cylinder, cylinder needles moves vertically and dial needles moves horizontally. Cylinder needles also get its motion from it. There is a cloth tale up roller which also rotates with unison to dial and cylinder and fabric is wound on it. 

Fig: Rib circular knitting machine.

In rib circular knitting m/c, Rib gaiting:

Knitting action:

The knitting action of a circular rib machine is shown in following Fig:

Fig: Knitting action of rib circular knitting machine.

1. Clearing: The cylinder and dial needles move out to clear the plain and rib loops formed in the previous cycle.

2. Yarn feeding: The needles are withdrawn into their tricks so that the old loops are covered by the open latches and the new yarn is fed into the open hooks.

3. Knocking Over: The needles are withdrawn into their tricks so that the old loops are cast off and new loops are drawn through them.  

  

Conclusion:

 
This experiment has significance in our study life. In this experiment we learn the knitting action of the machine; we know the different parts of this machine and also cam system. We point out the various specification of the machine. Special thanks to our teacher and his assistance for helping us, this will be very helpful to build our future.