Production Calculation of s/j circular knitting m/c.

1. Experiment No: 05 Date:16th
June 2014
Experiment Name: Production Calculation of s/j circular knitting m/c.
Some production related Equation:
Total Length of the Fabric,
𝐿 =
𝑀𝑎𝑐ℎ𝑖𝑛𝑒 𝑠𝑝𝑒𝑒𝑑 𝑖𝑛 𝑅.𝑃.𝑀 ×𝑁𝑜 𝑜𝑓 𝑓𝑒𝑒𝑑𝑒𝑟 ×𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦 ×60
𝑁𝑜 𝑜𝑓 𝑓𝑒𝑒𝑑 𝑠𝑦𝑠𝑡𝑒𝑚 𝑝𝑒𝑟 𝑐𝑜𝑢𝑟𝑠𝑒 ×𝑐𝑜𝑢𝑟𝑠𝑒 𝑝𝑒𝑟 𝑐𝑚 ×100
(m/hr)
Total width of the fabric,
𝑊𝐵 =
𝜋 × 𝐷𝑖𝑎 × 𝐺𝑎𝑢𝑔𝑒
𝑊𝑎𝑙𝑒𝑠 𝑝𝑒𝑟 𝑐𝑚 × 100
𝑚
Production Capacity,
𝑃 =
𝐿×𝑊𝐵×𝐺𝑆𝑀
1000
kg/hr
Parameter of our Lab circular knitting m/c:
1.Machine diameter = 23” 6.Course density = 17 course per cm
2.Machine gauge = 24 7.Wales density = 13 wales per cm
3.Machine speed = 35 R.P.M 8.Fabric weight = 160 gsm
4.No of feeder = 68 9.Fabric Construction = Plain Single Jersey
5.Efficiency = 75%

2. Calculation of total production capacity of our Lab s/j knitting m/c
Total Length of the Fabric,
𝐿 =
𝑀𝑎𝑐ℎ𝑖𝑛𝑒 𝑠𝑝𝑒𝑒𝑑 𝑖𝑛 𝑅.𝑃.𝑀 ×𝑁𝑜 𝑜𝑓 𝑓𝑒𝑒𝑑𝑒𝑟 ×𝐸𝑓𝑓𝑖𝑐𝑖𝑒𝑛𝑐𝑦 ×60
𝑁𝑜 𝑜𝑓 𝑓𝑒𝑒𝑑 𝑠𝑦𝑠𝑡𝑒𝑚 𝑝𝑒𝑟 𝑐𝑜𝑢𝑟𝑠𝑒 ×𝑐𝑜𝑢𝑟𝑠𝑒 𝑝𝑒𝑟 𝑐𝑚 ×100
(m/hr)
=
35 × 68 × 0.75 × 60
1 × 17 × 100
= 63 𝑚/ℎ𝑟
Total width of the fabric,
𝑊𝐵 =
𝜋 × 𝐷𝑖𝑎 × 𝐺𝑎𝑢𝑔𝑒
𝑊𝑎𝑙𝑒𝑠 𝑝𝑒𝑟 𝑐𝑚 × 100
𝑚
=
3.1416 × 23 × 24
13 × 100
= 1.33 𝑚
Production Capacity,
𝑃 =
𝐿×𝑊𝐵×𝐺𝑆𝑀
1000
kg/hr
=
63 × 1.33 × 160
1000
= 13.40 𝑘𝑔/ℎ𝑟
= 107.2 𝑘𝑔/𝑠ℎ𝑖𝑓𝑡
∴ 𝑇𝑜𝑡𝑎𝑙 𝑝𝑟𝑜𝑑𝑢𝑐𝑡𝑖𝑜𝑛 𝑐𝑎𝑝𝑎𝑐𝑖𝑡𝑦 𝑜𝑓 𝑡ℎ𝑖𝑠 𝑚𝑎𝑐ℎ𝑖𝑛𝑒 𝑖𝑠 107.2 𝑘𝑔 𝑝𝑒𝑟 𝑠ℎ𝑖𝑓𝑡.