3c digital electronic laser welding _ optical fiber transmission laser welding machine, the technology products have been widely used in 3c digital electronic products internal structure of the welding. Optical fiber transmission laser welding machine is a kind of laser welding equipment which can couple high-energy laser beam into optical fiber, transmit it over a long distance, collimate it into parallel light through collimating mirror, and then focus on the workpiece for welding. Flexible transmission non-contact welding can be applied to parts that are difficult to be approached by welding to achieve greater flexibility. Optical fiber transmission laser welding machine laser beam can achieve the time and energy of the light, can be processed at the same time, for more sophisticated welding conditions.
Optical fiber transmission laser welding machine has the advantages of good beam quality, fine spot and flexible installation. What needs to be specially put forward is that the optical fiber transmitted laser welding machine is a key technology in 3C digital electronic products -- real-time negative energy feedback technology. The energy negative feedback technology is a method to compare the energy waveform of the laser that wants to be output with the actual output energy waveform in real time to determine the input energy of the pump lamp and then control the output energy. The laser output energy can be precisely controlled within 3% through the negative energy feedback control technology, and the following problems that lead to large range fluctuation of laser output energy can be solved:
(1) the fluctuation of power supply affects the fluctuation of laser output energy
(2) the influence of the difference of each discharge of xenon lamp on the laser output energy
(3) the aging of xenon lamp leads to the reduction of laser output energy
(4) the fluctuation of laser output energy is caused by the change of water flow, water temperature and other factors.
In order to maintain a stable and good processing state and reduce the product defect rate, laser energy and its waveform are required to have good repeatability, and the energy negative feedback control technology is an effective means to solve this problem. With the further development of laser technology, 3c digital electronic laser welding equipment will be more and more widely used, laser technology will drive the industry's integration, high precision production.