Solder ball laser welding device based on multi-channel conveying and using method

Abstract

The invention discloses a solder ball laser welding device based on multi-channel conveying and a using method. The solder ball laser welding device comprises a support and a solder ball laser welding mechanism. The mounting frame is arranged at the top of the support, and a displacement mechanism is arranged on the mounting frame and used for multi-point accurate movement of the solder ball laser welding mechanism; the multi-channel conveying mechanism is arranged at the lower part of the solder ball laser welding mechanism and is used for feeding and conveying different types of solder balls; the multi-channel conveying mechanism comprises a backrest plate, an upper support is installed on the lower portion of the backrest plate, a plurality of solder ball feeding bins are arranged on the upper support and used for storing solder balls of different types, and the solder ball feeding bins are located on different loops on the top of the upper support respectively. According to the invention, through the arrangement of the multi-channel conveying mechanism, when the corresponding movable part is subjected to displacement change, different types of solder balls can be quickly switched to enter channels, so that the processing requirements of different processes can be conveniently met.

Description

technical field [0001] The invention relates to the technical field of tin ball laser welding, in particular to a tin ball laser welding device and a use method based on multi-channel conveying. Background technique [0002] Laser solder ball welding is divided into spray ball welding and ball mounting welding, which is a brand-new soldering and mounting process. The main advantage of this process is that it enables extremely small interconnects, with droplet sizes as small as tens of microns. The tin balls in the container can be transferred to the jet head through a special single tin bead distribution system. Through the high pulse energy of the laser, the tin balls placed on the jet head can be instantly melted, and then the melted tin material can be melted by inert gas pressure. , sprayed onto the surface of the solder joint to form interconnected solder joints, the existing solder ball laser welding device, in the process of using for different process environments, ...

AI Technical Summary

Problems solved by technology

The solder balls in the container can be transferred to the spray head through a special single tin ball distribution system, and the high pulse energy of the laser can instantly melt the solder balls placed on the spray head, and then use the inert gas pressure to dissipate the melted tin material , sprayed onto the surface of the solder joints to form interconnected solder joints, the existing tin ball laser welding device, in the process of using for different process environments, the amount of molten tin sprayed onto the surface of the corresponding solder joints is different, and the existing The solder ball laser welding device generally only has a single channel, which can only meet the entry of the same type of solder balls, and cannot adapt to a variety of different process environments

[0003] Although Chinese patent CN109551069B discloses an automatic laser multi-channel solder ball welding device, which includes a conveying component, a suction component, a soldering fixture and a solder ball box, it can simultaneously drop and place multiple solder balls, and perform multiple solder joints at a time. Welding can effectively improve the deficiencies of the existing technology, greatly improve production efficiency, and further improve the quality of processed products; although it discloses the technical concept of multi-channel simultaneous throwing of multiple solder balls, it does not perform different types of solder balls. The components that enter the channel switching and the precise control method of how to control the solder balls entering the laser welding point cannot accurately ensure the precise welding of different types of solder balls

[0004] Another example is the multi-channel feeding system for laser melting jet welding disclosed in Chinese patent application CN114160908A, which transports tin balls of different sizes by setting a number of feeding discs in a feeding mechanism, and the displacement mechanism drives the transmission shaft to perform linear reciprocating motion, so that the same Only one feeding plate rotates for conveying within a period of time. This device meets the needs of welding materials for different workpieces, but it cannot accurately identify whether the solder balls have entered the point to be soldered, and cannot accurately ensure the precise welding of different types of solder balls.

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