Advantages of laser welding plastics and welding methods for plastic welding INSHINE LIGHTING CO.,LTD , https://www.inshinelight.com
Laser welding plastic
1. Advantages of laser welding plastic
With the increasing use of high-power fiber laser plastic welding systems in the design and manufacture of parts for automobiles, medical equipment and electronics, plastics can fully meet the needs of fast, effective and clean plastics in the processing of plastic products, high-power fibers. The laser plastic welding system can fully meet the fast, effective and clean plastic welding method in the processing of plastic products.
At present, the plastic welding techniques commonly used in the domestic market mainly include vibration friction welding, hot plate plastic welding and ultrasonic welding. It is mainly used to connect sensitive plastic products (including circuit boards), plastic parts with complex geometries, and plastic products (medical equipment) with strict cleaning requirements. Fiber laser welding plastic technology has the following advantages:
(1) It can produce precision, firm and sealed (airtight and watertight) welding, with less resin degradation and less debris.
(2) It is easy to control, has good adaptability, and can weld workpieces with small size or complicated structure.
(3) The vibration stress and thermal stress of the product are greatly reduced.
(4) It is possible to weld many different kinds of materials together. Laser plastic welding technology has been applied in developed countries such as Europe and the United States, and China is still a blank in this regard.
2. Welding method for plastic laser welding
The basic principle of laser welding plastics is that two plastics are clamped together under low pressure. The laser passes through one product and is absorbed by another product. The product that absorbs laser energy converts light energy into heat energy. The surface melts to form a weld zone.
Commonly used welding methods are:
a. The laser beam is quickly scanned along the weld to achieve the purpose of welding.
b. The laser beam is shaped by the optical element while generating heat at the weld.
c. Irradiation mask welding, the laser beam only heats the part of the product that is not covered by the mask, and can quickly weld complex welds.
d. The laser beam is fixed and the plastic workpiece is placed on a multi-dimensional movable table controlled by the program.
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