Flexible printed circuit board stack type laser welding device and method
A flexible circuit board, laser welding technology, applied in laser welding equipment, welding equipment, welding equipment and other directions, can solve the problem of small heat-affected zone, and achieve the effect of small heat-affected zone, accelerated infiltration speed, and improved work efficiency
Active Publication Date: 2014-12-10
武汉荣科激光自动化设备有限公司
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Problems solved by technology
[0005] The invention provides a non-contact, small heat-affected zone, and full-area field effect stack-type laser welding device and method for flexible circuit boards, which can quickly and high-quality solve the problem of non-destructive welding of flexible circuit boards
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[0031] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.
[0032] Please refer to figure 1 According to the stacked laser welding method for flexible circuit boards of the present invention, the flexible circuit boards are welded by using a vertical stack laser 1 combined with a mask plate.
[0033] The vertical stack laser 1 (also called a stack laser) can be regarded as a laser matrix formed by countless laser beams. Instead of a thin laser beam, it is a laser energy spot in the entire rectangular area, which will bring the radiation heat field effect of the entire rectangular area to the receptor.
[0034] When the vertical stack laser 1 is used for soldering the flexible circuit board, generally the huge rectangular thermal field cannot be used. Therefore, the present invention sets a mask plate between the vertical stack laser 1 and the flexible circuit b...
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The invention relates to a flexible printed circuit board stack type laser welding device. The flexible printed circuit board stack type laser welding device comprises a vertical folded array laser, a film covering plate placed below the vertical folded array laser, a first driving mechanism which drives the vertical folded array laser to make two-dimensional motion in a plane and to make up-down movement in the vertical direction, and a second driving mechanism which drives the film covering plate to make ascending and descending movement. A groove corresponding to the welding area on a flexible printed circuit board is formed in the film covering plate, and laser emitted by the vertical folded array laser penetrates through the welding area on the flexible printed circuit board to be welded. The invention further provides a flexible printed circuit board stack type laser welding method. The vertical folded array laser is used for welding the flexible printed circuit board, instant simultaneous welding of a whole area within a short time can be achieved, and the welding work efficiency is improved. A heat affected zone to a reactor of the flexible printed circuit board stack type laser welding device is very small, harm is avoided both to a substrate and a copper clad of the flexible printed circuit board is avoided, meanwhile, the infiltration speed of soldering tin is improved, and the welding quality can be improved.
Description
technical field [0001] The invention relates to the technical field of electronic circuit board welding, in particular to a flexible circuit board stacked laser welding device and method. Background technique [0002] The flexible circuit board is composed of copper foil attached to the flexible plastic substrate. In order to maintain a certain softness, the plastic substrate and copper foil are generally made very thin. They are mainly used for signal transmission of the print head in the printer, mobile phones and other Digital terminals (such as landline phones, MP4, calculators), various home appliances (such as washing machines, microwave ovens, refrigerators, range hoods, smart rice cookers, smart sweepers), various medical instruments, household physiotherapy equipment, various industrial controls Screen (money counting machine, access control machine) motherboard and display signal transmission, etc. [0003] For the welding of flexible circuit boards, the tradition...
Claims
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Login to View More IPC IPC(8): B23K26/21B23K1/005B23K101/36
CPCB23K1/005B23K26/20B23K2101/36
Inventor 韩小平林卿王锋
Owner 武汉荣科激光自动化设备有限公司