How To Deal With Noise In Sewing Machine

Abnormal friction, impact and loosening occurred during high-speed operation.

The abnormal noise of the sewing machine can identify where the machine fault occurs and how to deal with the noise.

Noise:

1. bevel gears have different tooth surfaces, causing noise at high speeds.

Loosening the fastening screws of the bevel gears with different tooth surfaces.

Release the fastening screws of the axle sleeve which are in contact with the bevel gear shaft, use the knocking rod to strike the high and low position of the tooth surface, then tighten the fastening screws of the bevel gear and the axle sleeve respectively.

2. due to the axial loosening of the upper shaft, vertical shaft and lower shaft, the sound is generated.

Release the two fastening screws of the gear, re adjust the axial clearance of the vertical shaft and the upper and lower shafts.

3. the bevel gear tooth surface meshing clearance is too large or too small, causing noise.

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By tapping the sleeve to correct, the meshing clearance of a pair of gear gears is usually between 0.20~0.40.

4. gear quality is not good.

Add a small amount of grinding paste on the two pairs of meshing teeth, rotate the upper wheel with the right hand and put it on for about 10~15 minutes.

Clean the dirt with kerosene, slightly add lubricating oil, and then adjust the gap as required.

5. the clearance between the rotary shuttle and the positioning hook is too large.

The clearance between adjusting shuttle and positioning hook is in the range of 0.45~0.65mm.

6. the oil system fault caused the oil shortage in the moving parts.

The market is the first. Big market and big boss, from the perspective of long-term development strategy, enterprises should take the initiative to open up the "horse drawn carriage" with multiple driving markets at home and abroad.

At present, the market structure of some shoe enterprises in Wenzhou is relatively simple, checking or regulating the fuel supply of the oil circuit system.

7. rack or head installation is unstable.

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The technicians in the workshop choose and use the old machines and waste steel, especially the oil hole felt at the track.

If the shuttle is worn too large, the new rotary shuttle should be replaced. If the oil stain is still small, remove the lower shaft copper oil plug and check whether the filter element is blocked. A lean machine is made, and the machine is adjusted repeatedly through the repeated tests and modifications.