摘要:
A worksheet supporting bed for a laser cutter comprises a series of thin bands arranged parallel to one another in a common plane to form an even support surface. The bands take the form of endless strips each of which being tensioned between two braces. One of the braces is fixedly secured to an end frame portion of the bed and the other brace is secured via a tensioning screw to an opposite end frame portion. By turning the screw, the tension in the associated endless band is adjusted, and by removal of the screw, the associated endless band may be removed and another one substituted for it. The bands define elongated slots which may be penetrated by an optional mechanism which engages a worksheet supported on the bed and transports it to or from the bed. The upper edges of the bands may be smooth so that fabric sheets may slide along it easily without snagging. Also, the bed is gas-permeable.
摘要:
A method of cutting a multilayer pile of sheet material with a beam of laser radiation is disclosed. A laser beam having a low order mode intensity distribution is focused onto the pile and during cutting a stream of liquid coolant is directed into the material vaporization region to absorb energy from the outer region of the mode distribution which could otherwise result in adhesion of adjacent layers, globularization, singeing or other undesired effect.
摘要:
A cloth cutting system wherein cloth is carried in a single layer into a cutting area wherein a laser beam is focused on the cloth and is directed by computer commands to travel within the cutting area so as to cut a plurality of patterns through the cloth rapidly and accurately.
摘要:
A cloth cutting system wherein cloth is carried in a single layer into a cutting area wherein a laser beam is focused on the cloth and is directed by computer commands to travel within the cutting area so as to cut a plurality of patterns through the cloth rapidly and accurately.
摘要:
A LIGHT ABSORBING THERMOPLASTIC SHEET MAY BE CONVERTING INTO A NONWOVEN TEXTURED FABRIC BY DIRECTING A PULSED LASER BEAM ONTO EACH AREA OF A PREDETERMINED PATTERN OF MINUTE CLOSELY-SPACED AREAS OVER THE SURFACE OF THE SHEET WITH SUFFICIENT INTENSITY TO CAUSE THE SHEET TO MELT AND BE PERFORATED IN EACH SUCH AREA. WHILE THE AREA IS MOLTEN, A STREAM OF AIR OR OTHER GAS MAY BE DIRECTED INTO THE AREA WITH SUFFICIENT FORCE AND DURATION TO FIBRILLATE OR OTHERWISE FORM THE MOLTEN MATERIAL THEREIN.
摘要:
A method and apparatus is disclosed for forming lines of weakness in an automotive trim piece so as to enable formation of an airbag deployment opening in the trim piece. A cutting beam, such as a laser is directed at the trim piece surface to be scored and a sensor emits a sensing beam, and a beam combining device receives both the sensor beam and the laser beam and causes downstream beam segments to be collinear with each other as they impinge the trim piece surface. The scoring is thereby able to be carried out in a single pass, and is precise, repeatable and independent of cutting depth, angle of cutting, scoring patterns, material inconsistency, material color, and surface grain variability.
摘要:
A method of ablating or cutting tissue with a laser depending upon whether the tissue is hard or soft, including the steps of aiming a laser favoring emission of light radiation at a wavelength of 1.34 .mu.m at the tissue, ablating the tissue with the laser when the tissue is hard tissue, and cutting the tissue with the laser when the tissue is soft tissue.
摘要:
A process for preweakening the inside of an automotive trim piece cover layer of various constructions by use of a laser beam so as to enable formation of an air bag deployment opening in the trim piece formed at the time the air bag deploys. The laser beam impinges the inside surface of the cover to form a groove scoring or spaced perforations to form a preweakening pattern. A robot arm may be used to move a laser generator so as to form the preweakening pattern. The laser beam can be controlled in accordance with sensed conditions to achieve accurate preweakening, and may also be used to trim substrate panels and to perform other cutting operations.
摘要:
A leather layer is burned, preferably under a protective gas blanket, with a laser beam to increase the water vapor permeability for use of the leather in automotive vehicle seats.
摘要:
The current invention involves a process for microstructuring surfaces of oriented polymeric substrates using laser radiation having an intensity which is spatially modulated in a predetermined periodic manner. The process is especially useful for microstructuring the surfaces of textile products and films.