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Industrial sewing machine stitches, mechanism, Repair and maintenance.
Oct 28, 2021

★Overview of Industrial sewing machine

(1)Three stitches of sewing machine

a. Lock stitch (upper and lower feeding)

b. Chain stitch (high elasticity), such as overlock sewing machine

c. Bonding stitch (seamless stitch)

(2) Machine needle

Sewing needle models: at present, there are thousands of sewing needle models produced all over the world, so I won't go into details. Here, I briefly introduce the function of the needle long slot of dbx1 machine used on flat sewing machine.

a. The suture can move freely during work.

b. Intense friction between the needle and the sewing material will cause the needle to heat up. The surface temperature can reach more than 200 ℃, the yarn may be fused. The heating of the needle can be reduced during high-speed sewing.


a.Flat sewing machine: vertical rotary shuttle (360 °)

b.BARTACKER: Swing shuttle (180 °)

c.Double-needle machine: horizontal (360 °)

d.Round lock hole: curved needle

Industrial sewing machine

★Six mechanisms of sewing machine

(1)Upper pin

(2) Upper axle take-up bar mechanism

(3) Lower Shaft Shuttle Mechanism

(4) Clamping mechanism

(5) Delivery mechanism

(6) Foot pressing mechanism

★Repair and maintenance of Industrial sewing machine 

(1)The maintenance of a computerized sewing machine must pay attention to a few points:

computer sewing machine

a. Cleaning feed dog

Remove the screw between the needle plate and the feed dog

, clean the cloth and dust, and add a small amount of sewing oil.

b. Cleaning of shuttle bed

Shuttle bed is the core of sewing machine work and the most vulnerable area to failure. Therefore, it is necessary to remove dirt and add a small amount of sewing oil frequently.

c. Cleaning of other parts

The surface of the sewing machine and all parts of the panel should be cleaned frequently.


a. After the work is finished, insert the machine needle into the pinhole plate, lift the pin, and cover the machine head with the machine lid to prevent dust debris from intruding.

b. When starting work, check the main parts first, how about the weight of step-up, whether there is any special sound, whether the machine needle is normal, etc. If an abnormal phenomenon is found, it should be repaired in time.

(3) After the machine has been in use for quite a long time, it is necessary to carry out an overhaul. If heavily worn parts are found, they should be replaced by new ones.

If you are looking for an Industrial sewing machine, please contact:

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