Picking | Objectives of Picking | Types of Picking | Classification of Picking

Pick: Pick is a single weft yarn in woven fabric.

Picking: It is the process of weft yarn insertion in the warp shed. Picking is the second primary motion in the weaving.

Objectives of Picking :

• To throw the Shuttle at a pre-determined speed.

• It delivers the shuttle from one shuttle box to the other.

• To insert the weft yarn through the shed.

Types of Picking:

1. Shuttle Picking

2. Projectile Picking

3. Rapier Picking

4. Water Jet Picking

5. Air Jet Picking

Classification of Shuttle Picking:

• Negative Picking

1. Over Picking

2. Under Picking

• Semi Positive Picking

• Positive Picking

1.Over Pick Mechanism – Cone Over Pick Mechanism

2. Under Pick Mechanism

A) Side – level Under Pick Mechanism

B) Side – Shaft Under Pick Mechanism

C) Cone Under Pick Mechanism.

Over Pick : In this case the picking arm position is situated above the shuttle box.

Under Pick : In this case the picking arm position is situated below the shuttle box.

Difference between over pick and under pick :