First, you need to determine first: what kind of mask to produce?
According to the different appearance, it can be divided into:
Flat mask? KN95 mask? N95 mask? KF94 mask? Bandage type mask?
Different welding methods can be divided into:
Inner ear mask machine production line, outer ear mask machine production line, strap mask machine production line, N95 mask machine production line
Second, the stability of the mask machine
Main inspection: Ultrasonic and welder (more on this later)
Third, the most important part of the mask machine: servo motor, also called servo motor, servo system
Our automatic mask machine generally has 9 servo motors to ensure the stability of the machine.
Fourth, the PLC operation interface of the mask machine
The face mask manufacturing machine in our factory, PLC operation interface adopts multi-language settings, which is more user-friendly, more flexible and simple to operate.
How to choose facial mask manufacturing machine？
Fusion splicer: cycle number and amplitude
①: Converter
②: Amplifier
③: Fusion joint
④: Products
⑤: Fixture
How to choose ultrasonic and fusion splicer
The most commonly used ultrasound for mask machines are: 15kHz and 20kHz
Features: Mask machine (including: flat automatic mask machine, kN95 automatic mask machine, N95 automatic mask machine, KF94 automatic mask machine, etc.). Ultrasound is one of the most prone to loss components, and the frequency of repairs is also the highest .
How should we choose?
Technical principle:
The higher the ultrasonic frequency, the better the welding accuracy, but the smaller the relative power, the smaller the amplitude.
15kHz ultrasonic welding machine power is divided into: 2600W, 3200W, 4200W.It is easier to make larger sizes and has a larger amplitude, which is suitable for welding larger and difficult-to-weld products;
20kHzz ultrasonic welding machine power: 1500W~2400W, or higher frequency.Suitable for precision, ultra-thin, and very fragile plastic parts (such as: SD card, crystal oscillator products)
Our factory’s mask machine (including: flat, KN95/N95, KF94 mask machine, selection: 15KHZ+20KHZ ultrasonic, can solve the welding thickness, edge size, noise and other details)
Common faults and solutions of mask machine ultrasonic
| Common faults and solutions of mask machine ultrasonic | ||
| Problem Description | Cause Analysis | Solution |
| The welding effect is not ideal, and the ultrasonic test button hears howling | Ultrasonic die assembly problems | Adjust the relative position of the die head installation, horizontal, gap, vertical |
| The ultrasonic power indicator does not light up and does not work | Poor contact of the power socket | Check, repair, replace |
| Power fuse blown | Check, repair, replace | |
| The overload indicator does not light up during ultrasonic welding, and the ultrasonic output is weak | The power supply is not normal | Check and adjust |
| Relay does not operate | Check, repair, replace | |
| The circuit board three-terminal regulator LM7824 is damaged | Check, repair, replace | |
| The power indicator is on and does not work, but the ultrasonic test button has ultrasonic output | The five-core wire connecting the base and the frame is open | Check, repair, replace |
| Machine program circuit board failure | Check, repair, replace | |
Common problems and solutions of mask machine
| Common problems and solutions of mask machine | ||
| Problem Description | Cause Analysis | Solution |
| Roll left and right deviation | Front feeding rack is unstable | The feed rack needs to be fixed, the roll support should be level, and the tensioning wheel should be adjusted to increase the load of the rotating roll. |
| Crimp shift | Cloth tape material entrance, gantry frame is uneven, shifted | Adjust the gantry frame and the feed frame to ensure that the direction of the cloth is the same as that of the crimping board |
| The pre-squeezed and crimped parts should be relatively horizontal and have the same interval | ||
| The long side of the mask is rolled and misaligned, not vertical | Shift at the entrance of the roll | Make the fabric in the same direction as the folding board |
| Reel shift | Adjust the relative folding position of the roll | |
| Width positioning plate shift of flanging | Adjust the position of the width positioning plate | |
| The relative position of the bell mouth | Correct the position and shape of the bell mouth | |
| Mask nose folds | The bridge of the nose is not cut off | Adjust the nose bridge cutter |
| Cloth roll shift | Adjust the cloth roll | |
| Before welding, the position of the baffle is shifted | Adjust the bezel of the curling edge | |
| L-shaped pressure plate is too loose, too tight, and shifted | Adjust L pressure plate, moderate | |
| The short side of the mask is crooked or oblique | The shaping wheel is too tight | Adjust the shaping wheel, parallel, moderate pressure |
| Plastic wheel uneven | ||
| Poor welding on the long side of the mask | Welding gear roller pressure is too small | Adjust roller pressure |
| Not enough ultrasonic energy | Check the ultrasound status | |
| Poor welding on the short side of the mask | Welding gear roller pressure is too small | Adjust roller pressure |
| Not enough ultrasonic energy | Check the ultrasound status | |
| Ultrasonic steel film and hobbing uneven | Adjust the height of the ultrasonic die head to be parallel to the roller | |
| The welding position and the position of the bridge of the nose are shifted | Adjust the position of the welding teeth of the roller | |
| The mask is sliced, cut continuously, even silk | The cutter is too high and skewed | Adjust the height and pressure of the cutter |
| Cutter position is off | Adjust the relative position of the cutter roller | |
| Ear cord length problem | Too short, too long | Adjust the relative position of the ear rope limit block |
| Insufficient welding force at one end of the ear rope | Welding transition, too light | Adjust the pressure, stroke and relative position of the welding head |
| The welding points of the ear ropes are not parallel | Die head, not parallel | Adjust the relative position of the upper and lower die |
| Poor position of ear rope scissors | The position of the scissors is shifted and the opening is insufficient | Adjust the relative position of the scissors, the opening is moderate |
| Mask piece, skewed | The welding machine slide is too wide and too narrow | Adjust the width of the slide |
