In order to be familiar with and master the operation method and process requirements of laser engraving machine, the processing technology of various industries is briefly summarized. Large-area laser engraving machine, the larger the engraving area, the worse the corresponding engraving effect. Because the longer the beam of the large-area engraving machine, the more serious the resonance (vibration) will be. Half-cut body is a relatively complex process. Commonly used industries include fabrics, mobile phone buttons, and reflective materials. The flatness of the bottom plate is also very high, and the domestic laser tube can also meet the flexibility requirements. The specific engraving speed and light intensity are different for different users, and the parameter combination is also different. Roughly:
- Carton packaging industry (rubber sheet)
Rubber sheets use a 50mm focal length lens in a format larger than PLT and BMP. The main application of PLT is to check edges. Both forms have their own advantages, and the specific situation is analyzed in detail. When the height of the engraved text is greater than 10mm or the pattern line is greater than 1.5mm, take the inspection as an example, a 7mm single ordinary rubber plate. During inspection, you can humidify the newspaper on the surface, equipped with a leaking jet cup, do not blow too much wind, and blow the wet newspaper to make the inspection lines more delicate. , complete) The general adjustment of the speed at this time is 0.5-0.8 m/min, the faster the speed, the larger the sawtooth. Brightness adjustment is 20%-50%. If the depth is different and needs to be deeper, it can reach 60%-70%. Double rubber sheet 4 mm double rubber sheet is strong to 1.5 mm deep, the speed is generally controlled at 0.5 m/min, and the brightness is controlled at 45%. Depends on the situation. Engraving is usually used when the letter height is less than 10mm, and the speed is usually adjusted to 10-15m/min. The brightness adjustment should be set at the top depth of 18%-28%, depth of 55%-75%, slope between 0.8-1.5, and the resolution is generally 500-600dpi. The denser or smaller the text, the smaller the brightness and the higher the slope. Small.
Summary of ten industry applications of laser engraving machine
- Cloth embroidery industry
Generally, 50mm focal lens is used for fabric cutting. The normal speed of single-layer cutting is 5 m/min and the brightness is 40%. The higher the brightness, the greater the heat radiation, the thinner and lighter, the gap may be created. At present, the biggest problem of cutting is the yellow phenomenon. Flatten the fabric on the honeycomb floor, turn on the blower, and extract the smoke and dust in time. Don’t let the smoke generated during cutting make the fabric yellow, turn on the air compressor, blow air, and blow away the impurities in the seam to volatilize. substances and fumes, it is better to use an inert gas such as nitrogen
Summary of ten industry applications of laser engraving machine
(1) The cutting of ordinary fabrics (non-woven fabrics, polyester, coulomb, silk, silk, twill, etc.) fabrics are thin materials, usually 50mm focus lenses are used to ensure the cutting effect. The flares are thin and the seams are small. Turn on the external equipment of the laser machine (inhalation, blowing), lay the cloth flat on the honeycomb floor, and use a high-power pump compressor when the wind blows. Velocity: Large shapes or smooth parts of the outer curve of a shape can use higher velocities. For example, taking 690 units as an example, it is generally 3-10 m/min. The small shape or the part with many internal curves or corners is low speed, generally 0.5-3m/min. Brightness: The matching principle of brightness is high speed with high brightness, low speed and small brightness, and the general adjustment time is 30-60. At low speed, it is 18-35%, and the difference in size and strength is generally around 5-15%. When the cutting line and curve decelerate, the size and strength can be matched.
(2) Process requirements for special fabric cutting (white surface, clean cloth, PC, plastic composition distribution, etc.): the white surface fabric will not be cut yellow, the clean cloth will not be discolored, and the incision will not be hard, and a 50mm focus should be used for these two types of fabrics. mirror. In order to ensure the quality and quality of the spot, it is best to import RF lasers. The conditions are that the exhaust air, the blower (air compressor is turned on when cutting the white cotton cloth), and nitrogen is used. Speed: 1.5-3m/min, brightness: 20-30% of the current equipment and technology, there are still certain difficulties in order to fully realize this technology. Especially with thick white cotton, the cut will be discolored, and the dust-free cloth will appear slightly stiff. (on the other hand).
(3) Cutting of double-layer fabric (undried adhesive) (the upper layer penetrates, the lower layer has no damage or slight damage).
This is the processing technology of the electronics industry, which has high requirements for the matching of laser light control accuracy, stability and light intensity speed. At present, we generally use domestic glass tubes, which can basically achieve the effect, but it is recommended to use imported RF lasers for large-scale processing. . Open the inhaler, lay the cloth flat on the honeycomb, and adjust the flatness of the four corners of the honeycomb floor. Set Velocity Strength: Specific parameters Depending on the material, both can get a good match. Generally, it is about 1.5-6 meters, and the brightness is about 18-35. There is no specific requirement for the light intensity speed of the next layer. You can drive as fast as you can while ensuring better cutout quality, and there is a difference in setting the brightness. This ensures that the depth of the cut remains consistent when decelerating. (Some materials cannot be windy)
(4) Cutting of trademark woven label (fabric, woven label, trademark)
Trademark cutting At present, we mainly use two working modes: automatic camera and semi-automatic manual cutting. The accuracy mainly depends on the accuracy of machine debugging and positioning. There are some differences in each position, and each employee cannot completely cut along the edge. (Albert Einstein, Northern Exposure (American TV series), the cutting requirements are similar to ordinary cloth, but the loom mark is much greater than the cloth in accuracy and hardness, and also has great brightness and speed Difference. Speed and brightness depend on the specific processed product, reference parameters: speed 1.2-5 m/min, brightness 20-55%.
- Acrylic engraving and cutting
There are many kinds of plexiglass materials, and the difference between imported and domestically produced plexiglass is very large. Imported plexiglass is cut very smoothly, and some domestically produced impurities may cause foam. Cutting of propylene generally uses low speed machines. This is because the power of the laser tube is not large, and the accuracy of thin materials is relatively high. Usually the speed does not exceed 3 m/min, and the straight track can form a tight pattern and make it smooth. There are currently 5 focal length lenses, separated by focal length (50mm\63.5mm\75mm\100mm) With the thickness of the material, the following are introduced:
Summary of ten industry applications of laser engraving machine
Cutting of thick materials (10-20mm)
The plexiglass above 10mm generally uses a 75mm concentrating mirror, and the plexiglass above 25mm uses a 100mm concentrating mirror, which can cut up to 32mm plexiglass. 10mm plexiglass cutting: the cutting speed is generally 0.08-0.12 m/min, and the luminosity is 60-70%. The lightness of 60% is the most stable time, and the leaking jet cup can adjust the size of the airflow to make the edge smoother. Because the bigger the blower is, the dissolved objects will be blown onto the plexiglass by the auxiliary high-pressure gas, forming a matte side. Minimize wind. Sometimes customers need to add paper or perform film cutting, and the wind should not be too small at this time. Otherwise it may catch fire. When cutting plexiglass, the speed and brightness must be matched. The slower the speed, the worse the smoothness. Plexiglass over 15mm is best to use imported high-power laser. When engraving plexiglass, use a leaking spray cup. Please don’t carve too deep. Carving too deep makes it hard to get to the flatness of the bottom. The larger the gas, the more impact the fragment edge effect is. Need to carve more delicate and clear. Can’t carve too deep, too stingy. Acrylic fragments pay attention to the resolution settings. When outputting BMP format, the resolution is usually above 600dpi and the speed is 8-18.
Thin material cutting (2-10mm)
The plexiglass below 5 mm uses a 50mm focal mirror, the cutting speed is generally 0.35-0.8m/min, the brightness is 45-65%, and the 5-10mm plexiglass generally uses a 63.5 mm focal mirror, and the cutting speed is 0.15-0.3m/min , the brightness is 50, so the width of the cut plexiglass model is 1 meter, just like the specific effect, it depends on what processing you want to do.
glass (or mirror) shards
In the case of some real glass pieces, some customers will engrave the effect of sand on the glass, but the sharp part will be broken, so the speed and brightness are high. The general speed is 10 m/min and the brightness is 35%. Mirror fragments are generally marked with metal, and the bottom is more delicate and smooth.
- Wood cutting and carving
The board pieces are mainly used for casting templates, board models, veneer patches, hanger pieces, wooden photo frames, etc. The wood board materials include plywood, solid wood board, and medium density fiberboard. At present, the most cutting is plywood. Generally, the splint can be divided into 3mm, 5mm and 7mm. The normal 3mm splint speed can be cut at 1.2m/min, and some solid plates can be cut by 10mm. The specifics depend on the material. When cutting 6mm die board, it is best to use a 63.5mm focus lens. The speed is 0.2-0.4 m/min, the brightness is 75-80%, plus the atmospheric pump or air compressor, the effect is better. The thickness of the board model cut is usually no more than 3 mm, and the general speed is 0.5-1.2 m/min. The veneer patch cutting is generally equipped with a bifocal mirror. For customers with higher requirements, please maximize the use of RF pipes. Because the flare of the RF tube is delicate, the needlework is small.
Summary of ten industry applications of laser engraving machine
Hanger Fragments – When engraving, a small engraver with a small area is recommended.
Plank fragments require effect according to the size of the shape, set the machine speed. Some customers need to engrave darker, and can choose pieces that are out of focus. The size of the gas pump affects the degree of combustion.
Cutting and engraving of hot drilling templates, various commercial materials of hot drilling molds, cutting: hot drilling paper, engraving (density board) or thin acrylic fiber, hot drilling paper cutting generally uses 50mm focusing mirror, heat machine and exhaust air, will The cardboard is placed flat on the honeycomb, and there are no special requirements for cutting parameters and processing technology. The engraving speed of the hot drill board is 10 m/min. It depends on the size of the hot drill. The larger the hot drill, the thicker the hot drill. to carve deeper
- Leather cutting and engraving
Leather is mainly used for shoe pieces, handbags, leather gloves, bags, etc. The production process includes small holes, surface inspection or cutting patterns. The process requirements are: the surface of the lattice line does not turn yellow, the background color of the engraving material, the cutting edge of the leather does not turn black, and the engraving should be clear. Materials include synthetic leather, PU leather, PVC artificial leather, genuine leather fabrics, semi-finished products, various leather fabrics, etc. The engraving speed depends on the size of the pattern, the line speed of small patterns is relatively slow, the speed is 0.8 m/min, the cutting speed of large patterns is 1.5 ~ 3 m/min, the brightness is 75%, and ordinary leather can be cut. The dermis cutting is a bit slow, the speed is 0.4-1.2 m/min, the brightness is 60-75%, it turns black in the dermis cutting, but the air cutting but the incision forms an oxide layer, and the dermis requires that the incision is not black at all, which is difficult to meet the requirements. need to be processed. For example, it can be cut and the edges blackened with rubber. And cut the smelly thing, so far there is no way to solve it. Using nitrogen cutting requires high-pressure nitrogen consumption, slow speed and high cost, but if cutting without oxide layer, the cutting effect will be better. Different leather materials use different cutting methods. For example, artificial leather can win the bid in wet water first, and the effect is better. Rubbing can be added to the cut surface of the leather to prevent the surface from turning yellow. The edges are blackened and require special handling.
- Two-color sample engraving and cutting
Drawing according to the color of the material, the effect of the same figure on the black and white two-color samples is diametrically opposite. The debris is generally a 50mm focal length lens, the resolution is usually 350-500dpi, the speed is usually 8-20 m/min, and the brightness is 20-30%. The size of the air pump affects the degree of debris burning. The stronger the wind, the blurrier the engraving will be, so don’t get windy and remove the jet cup. {If you carve without blowing, the air port will be blocked. The double swatches are cut to dissolve slightly, the edges are blackened, and the edges are scraped off with a blade. } Speed is 1m/min, brightness is 50%~60%, sometimes you can add film cutting, tear the film after cutting, the edge surface will be better. 7. Lighting sculpture and cutting
Lamp decoration material: basically PVC, with cloth on the surface, and paper. The production process includes perforation, engraving, pattern cutting, etc., some need to be marked, and some need to be cut, especially according to the size of the graphics, the general cutting speed is 1.5 m/min, and the brightness is 45%. The air compressor also doesn’t yellow the edges. The sculpture is generally 15 meters per minute, the brightness is 30%, the resolution is 200dpi, and the ground is flat.
- Marble carving
Ordinary marble sculptures are pure black material, no grocery store. In this way, the characters carved out by image processing are vivid. The sculpture speed is 8 m/min, the brightness is 40%, the resolution is 600dpi, and the cable is 45 lines/inch.
Summary of ten industry applications of laser engraving machine
- Paper cutting (paper cutting, cell phone key film, cards, etc.)
Paper-cuts generally use minicomputers and bifocal mirrors. Because the paper is thinner, the graphics are more delicate, the air pump is the most suitable, and it is more suitable for use as a radio frequency pipe. The mobile phone button film is also used by many customers, and it is generally used for samples. Usually small machine, 50mm focusing lens. The speed is 0.5-1 m/min, the brightness is within 35%, the graphic size is basically all customers change the pattern, and then add the cutting seam size after modification. However, the flatness requirements of the honeycomb floor are also very high.
- Knife template cutting
The knife seam of the knife type is mainly 0.45 mm and 0.7 mm, and the requirements for the knife seam are relatively strict, and the width of the seam should be basically the same as that of the upper and lower parts. The materials are the island plate and the 6mm rubber plate. These materials are relatively hard and can only be cut at a slow speed, so a pneumatic device must be provided. In the case of 0.45, it is 63.5 lenses, and the speed is usually between 0.2 and 0.4 meters, and in the case of 0.7 per minute, it is 50 lenses. The wire is cut to a thickness of about 0.3 mm, and the speed is usually between 0.3 and 0.5.