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How to ensure the speed and accuracy of FPC laser cutting machine?
Laser cutting machines are highly integrated equipment that integrates light, machinery, and electricity. They have a high technological content.
Compared with traditional cutting processes, laser cutting machines have higher processing precision and flexibility, which is beneficial to improving material utilization and reducing product costs.
It has become one of the indispensable equipment for the manufacturing industry to reduce costs and reduce the burden on workers. Cutting accuracy and speed are important factors in judging the quality of laser cutting machines.
So how to ensure the speed and accuracy of laser cutting machines?
In fact, FPC laser cutting machines are just like cars.
They need to be tested and debugged before leaving the factory, and they need to be maintained during use to keep the equipment in a relatively good operating condition.
Laser cutting machines have many components, and the maintenance period of some parts is relatively short.
For example, protective lenses need to be updated frequently according to the frequency of cutting and working hours.
Adjust the machine assembly to improve the machine cutting effect.
Guide rails: When installing the guide rails, they must be parallel. If the guide rails are not parallel, there will be resistance when the machine runs, and the cut workpiece will have jagged edges, so the Y-axis guide rails must be parallel.
Cross beams and couplings: During the installation process of the machine's cross beams and couplings, if the screws are not locked, or if they are locked at an angle or are loose, it will affect the cutting effect of the laser cutting machine.
Therefore, the installation quality and accuracy of parts must be ensured.
Adjust the parameters of the laser machine to improve the cutting speed of the machine.
Machine parameters need to be gradually adjusted during the cutting process.
Generally, if the machine parameters are not adjusted properly, the cutting speed and effect will be affected to a certain extent.
Generally, you should pay attention to the following points when setting parameters:
Initial speed: As the name suggests, this setting is the speed at which the machine starts. The initial speed is not as fast as possible. In fact, if the speed is too fast, the machine may shake very badly at the beginning.
Acceleration: Acceleration is an acceleration process from the initial speed to normal cutting when the machine is producing. Similarly, there will also be a deceleration process when preparing to end cutting. If the acceleration is too low, it will cause The machine cutting speed slows down.
Laser cutting machine precision debugging method.
When the spot of the focal laser is adjusted to a small size, point shooting is performed to establish the initial effect.
The focal length is determined by the size of the spot effect.
As long as we recognize that the laser spot is small, this position is the best processing focal length, and then we can start processing.
In the front part of the laser cutting machine debugging, we can use some debugging paper and workpiece waste to point shooting to determine the accuracy of the focal length position.
Move the height of the laser head up and down, and the size of the laser spot will change in different sizes when it is point shot.
Make adjustments to different positions many times to find a small spot position to determine the focal length and the good position of the laser head.
The above is how to ensure the accuracy and speed of the laser cutting machine.
At present, the application of laser cutting machines is very wide, covering many industries.
The advantages of laser cutting machines are becoming more and more obvious, and the proportion of their position is becoming more and more important.
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What are the precautions for operating a laser marking machine?
1. It is strictly prohibited to start the laser power supply and Q-switching power supply when there is no water or the water circulation is abnormal.
2. The Q power supply is not allowed to operate without load (i.e., the output terminal of the Q power supply should be left floating).
3. In case of any abnormal phenomenon, first turn off the galvanometer switch and the key switch, and then conduct a check.
4. It is not allowed to start other components before the krypton lamp is lit to prevent high voltage from entering and damaging the components.
5. Pay attention to leaving the output terminal (anode) of the laser power supply suspended to prevent sparking and breakdown with other electrical appliances.
6. Keep the internal circulating water clean. Regularly clean the water tank and replace it with clean deionized water or pure water.
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What should we do when laser intensity decreases and the marking is not clear enough?
1. Turn off the machine and check if the laser resonant cavity has changed; Fine-tune the resonant cavity lens. Make the output light spot the best;
2. The acousto-optic crystal is offset or the output energy of the acousto-optic power supply is too low;
Adjust the position of the audio-visual crystal or increase the working current of the audio-visual power supply;
3. The laser entering the galvanometer deviates from the center: Adjust the laser;
4. If the current is adjusted to around 20A but the light sensitivity is still insufficient: the krypton lamp is aging. Replace it with a new one.
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How to maintain a UV laser cutting machine?
1. It is required to carry out regular cleaning every day, remove debris from the countertop, limiters and guide rails, and spray lubricating oil on the guide rails
2. The waste materials in the collection box should be cleared regularly to prevent excessive waste from blocking the exhaust port.
3. Clean the chiller once every 15 days, drain all the internal water, and then fill it with fresh pure water.
4. The reflector and focusing lens should be wiped with a special cleaning solution every 6 to 8 hours.
When wiping, use a cotton swab or cotton swab dipped in the cleaning solution to wipe from the center to the edge of the focusing lens in a counterclockwise direction.
At the same time, be careful not to scratch the lens.
5. The indoor environment can affect the lifespan of the machine, especially in damp and dusty conditions.
A damp environment is prone to causing rust on the reflective lenses and also easily leading to short circuits, discharge and sparking of the velvet laser.
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What accidents might be caused by the laser emission when using a laser cutting machine?
(1) A fire was caused by the laser coming into contact with flammable materials.
Everyone knows that the power of laser generators is very high, especially when it comes to high-power laser cutting machines, the temperature of the emitted laser is extremely high. The possibility of a fire being caused when a laser beam comes into contact with flammable objects is very high.
(2) Harmful gases may be produced when the machine is in operation.
For instance, when cutting with oxygen, it undergoes a chemical reaction with the cutting material, generating unknown chemical substances or fine particles and other impurities. After being absorbed by the human body, it may cause allergic reactions or discomfort in the lungs and other respiratory tracts. Protective measures should be taken when conducting work.
(3) Direct laser exposure to the human body can be harmful.
The damage caused by lasers to the human body mainly includes damage to the eyes and skin. Among the harms caused by lasers, the damage to the eyes is the most severe. Moreover, damage to the eyes is permanent. So when doing homework, you must pay attention to protecting your eyes.
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What is the focused spot diameter of nanosecond, picosecond and femtosecond laser?
Nanosecond: The light spot is 0.5-1mm.
Picosecond: The focused spot is around 0.02mm.
Femtosecond: Under the action of a laser beam with a high repetition rate of 100-200KHz and a very short pulse width of 10ps,
the focused spot diameter is as small as 0.003mm.
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What are the main applications of UV laser cutting machine?
The UV laser cutting machine can be used for cutting and depaneling PCB.
It can precisely cut and shape various types of PCB circuit boards with V-CUT and stamp holes, and open Windows and covers.
It can also be used for separating packaged circuit boards and ordinary smooth boards.
It is suitable for cutting various types of PCB substrates, such as ceramic substrates, rigid-flex boards, FR4, PCBs, FPCs, fingerprint recognition modules, cover films, composite materials, copper substrates, aluminum substrates, etc.
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Precautions for laser cutting machines to process various metal materials?
Copper and brass:
Both materials have high reflectivity and excellent thermal conductivity.
Brass with a thickness of less than 1mm can be processed by nitrogen laser cutting.
Copper with a thickness of less than 2mm can be cut. The gas used for laser cutting processing must be oxygen.
Copper and brass can only be cut when a "reflective absorption" device is installed on the system. Otherwise, reflection will damage the optical components.
Synthetic materials:
Processable synthetic materials include: thermoplastics, thermosetting materials and artificial rubber.
Aluminum:
Despite its high reflectivity and thermal conductivity, aluminum materials with a thickness of less than 6mm can be cut, depending on the type of alloy and the capacity of the laser.
When cutting with oxygen, the cutting surface is rough and hard.
When nitrogen is used, the cutting surface is smooth.
Pure aluminum is extremely difficult to cut due to its high purity.
Only when a "reflection and absorption" device is installed on the fiber laser cutting machine system can aluminum materials be cut.
Otherwise, reflection will damage the optical components
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What should be paid attention to when laser cutting stainless steel?
Laser cutting processing of stainless steel requires the use of oxygen, under the condition that edge oxidation is not a concern.
If nitrogen is used to achieve an edge free of oxidation and burrs, no further processing is required.
Coating an oil film on the surface of the sheet will achieve a better perforation effect without reducing the processing quality.