About The Causes And Solutions Of Common Failures Of Ultrasonic Welding Machines

About the causes and solutions of common failures of ultrasonic welding machines

About the causes and solutions of common failures of ultrasonic welding machines

Excessive welding

Reason: input plastic parts too much energy

Solution:

1. Reduce the air pressure

2. Reduce welding time

3. Reduce the number of amplitude segments

4. Replace the low-magnification secondary rod

Inconsistent welding effect

the reason:

1. Injection mold changes

2. Use hose material or inferior material

3. Changes in the proportion of filling materials

Solution:

1. Check whether the injection mold is worn

2. Improve the materials used

3. Fixed ingredients

Plastic parts cracked and broken

the reason:

1. The ultrasonic amplitude is too large

2. The plastic parts are not strong enough

Solution:

1. Choose a low-power secondary pole

2. Reduce the output amplitude

3. Plastic reinforced or thickened

Non-welded surface damage

the reason:

1. The welding head does not match the plastic contact surface

2. Ultrasonic concentrated damage

Solution:

1. Repair the welding head and the bottom mold to make them fit the plastic parts

2. Repair the welding head to avoid the air at the relevant position

Insufficient welding

Reason: Too little energy to input plastic parts

Solution:

1. Increase the air pressure

2. Lengthen the welding time

3. Increase the number of amplitude segments

4. Replace the high-power secondary rod

5. Use higher power models

Plastic parts surface perforation

 the reason:

1. The ultrasonic amplitude is not enough, caused by long time welding

2. Ultrasonic concentrated damage

Solution:

1. Increase the output amplitude, reduce the welding time, and replace the models with higher power when necessary

2. Avoid the corresponding position of the welding head

3. Reinforce the thickness of plastic parts or add reinforcement