Thread Path | Industrial Over Lock Machine | Study of Thread Path, Main Adjustment Points of Different Industrial Over Lock Machine and Production of Sample

Experiment name: Study of thread path, main adjustment points of different industrial over lock machine and production of sample.

Introduction:
There are many types of sewing machine. Some are used for special purposes such as bar tack machine, button hole making machine etc. This type of machines works in a cycle and so these are called simple automatic machine. Here we study on such a type of machine that is button attaching machine.
 industrial over lock machine
Industrial over lock machine
Objectives:
  1. To know about the machine parts.
  2. To know about the thread path.
Specification:
  • Name : Industrial overlock m/c.
  • Types : 3, 4 & 5 threads
  • Brand : JUKI
  • Model : MO-3614 (4 thread)
  • SPM : 6500-8500
  • TPI : 15-16 (3), 17-18 (4) & 21-22 (5)
  • Needle no : 1 needle, 2 loopers (3); 2 needles, 2 loopers (4) & 2 needles, 3 loopers (5)
  • Needle name : DCX1
  • Needle size : 9, 11, 14, 16, 18, 20 & 21
Main parts:
  1. Thread stand
  2. Thread package
  3. Thread guide
  4. Disc type tensioner
  5. Thread guides
  6. Needles
  7. Loopers
  8. Thread cutter
Description:
Mainly over edge machines are overlock machines. In this type of sewing machines there are one or two needles and edge-trimming knife is at the front of needle. To make over lock stitch 2-5 threads are used. Usually SPM of over lock machine is 6500. But SPM of 8500 machines are also found. In this machine there also stretching (stretching max 1: 0.6) and gathering (gathering max 1: 4) systems during feeding cloth. Stitch is done up to maximum 4 mm length and stitch length may also be changed by push button. This type of machines can be used for sewing for both woven and knitted cloths.

Conclusion:
This type of machine can not be used for normal purpose. But for making a complete garment their importance can not be denied. Special care and sufficient knowledge is necessary for proper working. Otherwise faulty sewing may be done. I would like to give special thanks to our teacher. I am also grateful to our instructors. I think this will be very helpful in my future life.

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