What is the principle of the ultrasonic mask machine?

Ultrasonic plastic welding machine (English note: Ultrasonic plastic welding machine) is a welding equipment developed and designed by ultrasonic plastic welding equipment in the field of plastic welding, which is referred to as ultrasonic plastic welding machine in the industry. Ultrasonic welding equipment is a high-tech technology for welding cooked plastic products, all kinds of cooked plastic parts can be treated by ultrasonic welding, when welding plastic products, neither add any adhesive, filler or solvent, nor consume a large number of heat sources, with the advantages of easy operation, fast welding speed, high welding strength and high production efficiency. How it works:

When the ultrasonic wave acts on the contact surface of the thermoplastic plastic, it will produce tens of thousands of high-frequency vibrations per second, and the high-frequency vibration that reaches a certain amplitude will transmit the ultrasonic energy to the welding area through the upper weldment, and the welding area is the intersection of the two welds with large acoustic resistance, so it will produce local high temperature. Due to the poor thermal conductivity of plastics, they can not be dissipated in time for a while, and they gather in the welding area, causing the contact surface of the two plastics to melt rapidly, and after adding a certain pressure, they are fused into one. When the ultrasonic wave stops working, let the pressure continue for a few seconds to solidify and form, so that a strong molecular chain is formed, and the welding strength can be close to the strength of the raw material.

The quality of ultrasonic plastic welding depends on the amplitude of the transducer welding head, the pressure applied and the welding time, the welding time and the pressure of the sonotrode can be adjusted, and the amplitude is determined by the transducer and the amplitude rod. There is a suitable value for the interaction of these three quantities, and when the energy exceeds the appropriate value, the melting amount of the plastic is large, and the weld is easy to deform; If the energy is small, it is not easy to weld, and the pressure applied should not be too large. This optimal pressure is the product of the side length of the welded part and the optimal pressure per 1mm of the edge.

Ultrasonic frequency debugging of mask machine.

List the faults that will occur in the process of commissioning or in the use of the mask machine equipment.

1. The welding is uneven, and the workpiece is distorted and deformed.

Solution: 1. Check whether the size of the workpiece is different.

2. Check whether the operating conditions cause deformation of the workpiece.

3. Adjust the buffer speed or pressure.

Fault. Second, the base support is not stable.

Solution: 1. Improve the support point where necessary.

2. The base is redesigned.

3. Replace it with a hard base.

4. If a large area of bakelite board is tilted, it needs to be reinforced.

Fault. 3. The contact surface of the welding head, base and workpiece is uneven.

Solution: 1. Redesign the energy guard point to make the height uniform.

2. Adjust the horizontal screws.

3. Check whether the conditions are true.

4. Check the shape and size of the workpiece.

5. The side is bent, and the workpiece is ribbed.

6. Modify the smelting tool to avoid the workpiece from bending outward.

Fault. Fourth, the workpiece error is too large.

Solution: 1. Tighten the tolerance of the workpiece.

2. Re-modify the size of the workpiece.

3. Check the operating conditions (pressure, delay timing, welding timing, curing timing, etc.).

Fault. Fifth, the welding is uneven, and the alignment of the workpiece is improper.

Solution: 1. Check whether the workpiece is offset during welding.

2. Check whether the workpiece is aligned when combining.

3. Check the parallelism of the welding head, workpiece and smelting tool.

Fault. 6. Lack of close contact between the joint surfaces.

Solution: 1. Check the size of the workpiece.

2.Check the tolerances of the workpiece.

3. Check the position of the thimble on the joint surface.

4. Check the alignment of the workpiece combination.

5. Check whether the workpiece is dented.

6. Check the fit between the workpiece and the sonotrode.

7. Check whether the support of the smelting tool is appropriate.

Fault. 7. The ultrasonic welding results are inconsistent.

1) The proportion of additives is too high.

Solution: 1. Reduce the additive.

2. Check the operating conditions.

3. Change the type of filling, that is, change the ** cone to a long line cone.

2) The addition is unevenly distributed.

Solution: 1. Check the operating conditions.

2. Check the mold design.

3) The quality of the material is poor.

Check the operating conditions.

4) Poor fit of the workpiece.

Solution: 1. Check the size of the workpiece.

2. Check the tolerance of the workpiece.

3. Check the operating conditions.

1. Turn on the power switch of the mask machine, the ultrasonic power indicator of the mask machine is not lit, and there is no action. Reason: a

The power cord of the mask machine is in poor contact with the power socket; b.The power fuse of the mask machine burns out. 2. Turn on the power switch of the mask machine, the power indicator light is on, but there is no action, press the ultrasonic test button of the mask machine to have an ultrasonic output.

Reason: aThe five-core wire connected to the base of the mask machine and the rack is open; b.

Machine program circuit board failure. 3. Turn on the power switch of the mask machine, the power indicator of the mask machine is on, but there is no action, and there is no ultrasonic output when you press the ultrasonic test button of the mask machine. Reason:

a. Check whether the emergency stop switch of the mask machine is pressed; b.The 110V or 24V power supply of the ultrasonic power transformer of the mask machine is abnormal; c.Machine program circuit board failure.

4. The mask machine has action, but there is no ultrasonic output when the ultrasonic test button and the working button of the mask machine are pressed. Reason: a

The 110V power supply of the ultrasonic power transformer of the mask machine is abnormal; b.The 110V power cord of the ultrasonic circuit motherboard of the mask machine fell off. 5. Press the test button The mask function works normally, but the machine does not move when the mask machine is pressed the working button.

Reason: A mask machine working switch is damaged; b.The five-core wire connected to the base of the mask machine and the rack is open;

6. When pressing the ultrasonic test button of the mask machine, the indicated value of the power load meter is greater than 20% and cannot be adjusted down by the tuner. Reason: A hood machine ultrasonic transducer system malfunction:

b.The power pipe of the machine was burned and destroyed. 7. The ultrasonic overload indicator of the mask machine is on during welding.

Reason: aThe stand-alone ultrasonic transducer system is faulty.

8. The welding effect of the mask weldment is not ideal, but the overload indicator light is not lit when the welding fluid is sold, and the ultrasonic output of the mask machine is weak. Reason: a

The 24V power supply of the ultrasonic power transformer of the mask machine is abnormal, the relay does not operate, and the three-terminal voltage regulator LM7824 on the ultrasonic program board of the mask machine is damaged. 9. The welding effect of the weldment is not ideal, and the whistling sound is heard by pressing the ultrasonic ultrasonic test button of the mask machine. Reason:

There is a problem with the assembly of the ultrasonic transducer system of the mask machine. 10. Turn on the power switch of the mask machine and hear a faint whistling sound. Lead Reed Cause:

1-2 power tubes on the ultrasonic circuit board of the mask machine are burned out.

Summary. Is it normal for the ultrasonic oscillator of the mask machine to be electrified.

Hello dear,!<

When the sound wave is stopped, the pressure continues, and there is a slight pressure holding moment, so that it condenses and forms, so that a strong molecular chain is formed to achieve the purpose of welding. Hope it helps! <>

Is it normal for the ultrasonic oscillator of the mask machine to be electrified.

Is it normal for the ultrasonic oscillator of the mask machine to be electrified, hello dear,!<

When the sound wave is stopped, the pressure continues, and some pressure retention is relieved at the moment, so that it condenses and forms all over the world, so as to form a solid molecular chain of sleft limbs to achieve the purpose of welding. Hope it helps! <>

Is it normal for <> to 60v to ground?

Why some are not electrified and some are electrified.

Hello dear,!<

When the sound wave is suspended, the pressure continues, and some wax taps are slowly engraved when the pressure is maintained, so that it condenses and forms, so as to form a strong molecular chain and achieve the purpose of welding. Hope can help you! <>

When the sound wave is suspended, the pressure continues, and there is a slight pressure holding moment, so that it can be condensed and formed, so that it will form a solid molecular chain and reach the purpose of welding. Hope it helps! If my answer is helpful to you, please give a thumbs up (comment in the lower left corner), look forward to your praise, your efforts are very important to me, and your support is also the driving force for my progress.

Finally, I wish you good health and a good mood!