Composite laser synchronous plastic welding method
A plastic welding and laser technology, which is applied in the direction of laser welding equipment, welding equipment, welding/welding/cutting items, etc., can solve problems such as gaps and dimensional deviations, improve welding efficiency, improve weld quality and product life, and eliminate Effect of Product Gap
Pending Publication Date: 2022-04-19
HANS LASER TECH IND GRP CO LTD
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[0003] Based on this, it is necessary to address the above problems and propose a composite laser synchronous plastic welding method to solve the problems of gaps and dimensional deviations in the prior art when plastic welding upper and lower products are formed
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[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0025] see figure 1 , which is a schematic flow chart of the compound laser synchronous plastic welding method in the embodiment of the present application, the method comprising:
[0026] Step 101, turn on the mid-infrared laser fiber in the semiconductor light source module, and the mid-infrared laser fiber irradiates a mid-infrared laser with a preset wavelength to preheat the plastic to be welded;
[0027] Step 102, turn on the infrared laser fiber in the semi...
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The embodiment of the invention discloses a composite laser synchronous plastic welding method which comprises the following steps: turning on a mid-infrared laser fiber in a semiconductor light source module, irradiating mid-infrared laser with a preset wavelength by the mid-infrared laser fiber, preheating to-be-welded plastic, turning on an infrared laser fiber in the semiconductor light source module, and irradiating the to-be-welded plastic by the mid-infrared laser with the preset wavelength. And the infrared laser optical fiber irradiates infrared laser with a preset wavelength to weld the plastic to be welded. The intermediate infrared laser and the infrared laser are used for conducting composite laser synchronous welding, the composite laser synchronous welding is beneficial to improving the welding efficiency, the intermediate infrared laser can further provide part of welding energy, product gaps can be eliminated through the composite laser synchronous welding, product air holes and incomplete fusion defects are reduced, and the product quality is improved. Meanwhile, product internal stress is reduced through softening, and welding quality and product life are improved.
Description
technical field [0001] The invention relates to the field of laser plastic welding, in particular to a composite laser synchronous plastic welding method. Background technique [0002] Laser plastic welding is an important plastic welding method. There is no debris and no vibration during the welding process. It is a clean, efficient and high-quality flexible plastic processing method. It has important applications in automobiles, medical care, electronics, etc. Due to the tolerance of plastic injection molded parts, for materials with better rigidity, there is usually a gap in the pressing position during the welding and pressing process. Conventional laser plastic welding will produce defects of poor bonding when there is a gap. At present, the common methods of plastic laser welding include contour welding, quasi-synchronous welding, mask welding, synchronous welding, etc. Synchronous welding means that the required welding position is covered with optical fibers, and the...
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IPC IPC(8): B23K26/21B23K26/70
CPCB23K26/21B23K26/702B23K2103/42
Inventor 黄裕佳肖华苏长鹏董畏刘谦陈文兴关欣晟张战役王瑾高云峰
Owner HANS LASER TECH IND GRP CO LTD