Question 41 (Textile Engineering & Fibre Science)
Higher value of stitch cam setting in a weft knitting machine would
| (A) | Increase the loop length and decrease the fabric areal density |
| (B) | Increase the loop length and increase the fabric areal density |
| (C) | Decrease the loop length and decrease the fabric areal density |
| (D) | Decrease the loop length and increase the fabric areal density |
[Show Answer]
Option A
Frequently Asked Questions | FAQs
What is the function of the stitch cam?
A stitch cam is a mechanical component that plays a crucial role in the formation of stitches during the knitting process. The function of the stitch cam is to control the vertical movement of the needles, which determines the stitch length or loop height in the knitted fabric. The stitch cam is an essential part of the cam system in a circular knitting machine, which also includes other cams such as the cylinder cam and the sinker cam.
The main function of the stitch cam is to guide the needles up and down in a predetermined pattern to create the desired stitch length or loop height. The stitch cam has a profile or shape that is designed based on the desired stitch pattern, and it rotates along with the cylinder or needle bed of the circular knitting machine. As the needles pass over the stitch cam, the cam profile engages with the needles, lifting them up to form the stitches.
The shape or profile of the stitch cam determines the stitch length or loop height in the knitted fabric. A higher stitch cam profile will result in longer stitches or taller loops, while a lower stitch cam profile will produce shorter stitches or smaller loops. By changing the shape or profile of the stitch cam, different stitch patterns and fabric structures can be achieved, allowing for a wide range of knitted fabric designs.
In addition to controlling stitch length, the stitch cam also influences other knitting parameters, such as the stitch density, fabric stretch, and fabric appearance. Proper selection and adjustment of the stitch cam are crucial in achieving the desired fabric characteristics and overall knitting performance.
Overall, the function of the stitch cam in textile machinery is to control the vertical movement of the needles, determine the stitch length or loop height, and ultimately create the desired stitch pattern in the knitted fabric during the knitting process.