Introduction to Cams for Circular Knitting Machines: Functions and Types
Cams play a crucial role in the operation of circular knitting machines, revolutionizing the textile industry. These mechanical components determine the intricate patterns and designs produced by these machines. In this article, we will explore the functions and types of cams used in circular knitting machines. Functions of Cams: Cams are responsible for controlling the movement of the knitting ne
Functions of Cams:
Cams are responsible for controlling the movement of the knitting needles in circular knitting machines. They determine the stitching technique and pattern formation. The primary functions of cams include:
1. Stitch Formation: Cams guide the knitting needles to form different types of stitches, such as knit, purl, tuck, and miss stitches. By controlling the position and movement of the needles, cams enable the creation of diverse fabric textures.
2. Fabric Structure: Different cam profiles and arrangements influence the fabric structure. Cams control the loop size, yarn tension, and stitch density, allowing the production of fabrics with varying stretch, drape, and thickness.
3. Color and Design: Cams determine the color patterns and designs in knitted fabrics. Multi-feed cams enable the use of multiple yarns, resulting in intricate designs, stripes, and jacquard patterns.
Types of Cams:
Circular knitting machines employ various types of cams to achieve different knitting techniques. Some common types include:
1. Single Jersey Cams: These cams produce basic single jersey fabrics with a smooth surface. They create a simple interlocking stitch pattern, commonly used in t-shirts, sportswear, and underwear.
2. Rib Cams: Rib cams form ribbed fabrics with vertical wales. They alternate the knitting needles between knit and purl stitches, creating a raised ribbed texture. Rib fabrics are widely used in cuffs, collars, and waistbands.
3. Jacquard Cams: Jacquard cams enable the creation of complex designs and patterns by controlling multiple yarn feeds. These cams allow for the incorporation of different colors and intricate motifs, expanding the creative possibilities in textile production.
4. Intarsia Cams: Intarsia cams facilitate the production of intarsia fabrics, where separate colored yarns are knitted independently. This technique is commonly used to create large-scale motifs or pictures on knitted garments.
In conclusion, cams are indispensable components in circular knitting machines, driving the production of a wide range of knitted fabrics. Understanding the functions and types of cams enhances our appreciation for the intricacies of textile machinery. Whether it's the formation of stitches, fabric structures, or intricate designs, cams play a vital role in meeting the demands of the modern textile industry.