(PRWEB) July 04, 2012
Wooden engraving is usually used in die-boards, wood models, wood joint boards, engraving clothes rack, wood photo frame and others. Wood plates are classified into plywood, solid wood, MDF and the plywood is the widest application. Usually, plywood includes three specifications: 3mm, 5mm and 7mm. all these materials can be cut by laser cutting machine. The normal speed to breakdown 3mm plywood is 1.2 meters per minute and some solid wood can be cut to 10mm. Details are determined by actual situation. 63.5mm focusing lens is better for cutting of 6mm die-board and the speed is 0.2-0.4 meter per minute, the optical density 75-80%. Addition with strong air pump or air compressor, the effect will be better. Usually, the thickness of wood model is below 3mm and the speed is 0.5-1.2 meters per minute. Wood joint boards are usually cut with double focus mirrors and choice of RF laser diode is advised for customers of high requirements for its exquisite beam spot and incision. Small area engraver is advised for clothes rack engraving. The speed is determined by the size of the wood plate to be engraved and the effect to be achieved. For dark engraving effect, defocus engraving can be employed. The power of the air pump will influence the degree of burning.
Cutting and engraving of hot production drilling template: hot production drilling template are various and the common materials include: hot drilling paper, Engraving (density board) or acrylics. 50mm focusing lens is usually adopted for cutting of hot production drilling template. Turn on the air blow machine and exhaust fan to absorb the template evenly on the honeycomb and there is no specific requirements to the cutting parameters and processing technologies. Since the graphics at the cutting position is not too big, the speed is usually 0.5-3.5 meters per minute and the optical density 18-40. Enhance the air blow as much as possible to decrease the color change of the incision. The speed of engraving hot production drilling template is 10 meters per minute and the optical density is 35%, resolution over 600 dpi. The actual parameters should be determined by the size of the hot drill. The bigger the drill, the greater the thickness and the deeper the engraving are.
Laser machine can be adopted for rubber plate engraving. Generally, the 50mm focusing lens and PLT and BMP format are chosen. PLT is mainly used for edge engraving. Each format has its own advantages and it should be analyzed according to the actual case. If the height of the character to be engraved is over 10mm or the width of the line is over 1.5mm, the edge engraving method can be chosen. Take the first 7mm single layer common rubber plate for example, when edge engraving, wet newspaper should be laid on its surface and leaking air ejector should be used. Strong air blow that can uplift the newspaper should be avoided. In this way, the line engraved will be more exquisite. The speed for such circumstance is usually 0.5-0.8 meters per minute and the higher the speed, the bigger the saw tooth is. The optical density should be between 20%-50%. It should be adjusted according to the depth. If it’s deeper, the optical density can be adjusted to 60%-70%. And for double layer rubber plates: the optical density depth should reach 1.5mm for 4mm double layer rubber plate and the speed should be adjusted to 0.5 meters per minute with optical density of 45%. It should be determined by actual conditions. If the height of character to be engraved is lower than 10mm, the method of engraving can be adopted and the speed is generally 10-15 meters per minute, the optical density is generally adjusted to 18%-28% of the total depth and the optical density depth is generally 55%-75%, the gradient is between 0.8-1.5, and the resolution is 500-600dpi. The denser or the smaller the characters, the smaller the optical density and the gradient will be set.