A continuous and high-efficiency welding process for the surface of high-precision aluminum substrate and flexible board

Abstract

The invention relates to a high-precision aluminum substrate and a flexible surface continuous high-efficiency welding process, including five steps of bearing positioning, surface pretreatment, welding work surface treatment, welding operation and cutting application. On the one hand, the present invention has a simple and standardized structure and production process, and has good versatility. The use of auxiliary materials such as solder and brazing filler metal is used. While improving the efficiency of welding operations, it also effectively reduces the welding cost and the defects of excessive differences in the resistivity of the circuit system, and also greatly reduces the circuit system after welding operations. The running resistance improves the stability of the circuit operation and reduces the energy consumption and calorific value of the circuit operation.

Description

technical field [0001] The invention relates to a continuous high-efficiency welding process on the surface of a high-precision aluminum base plate and a flexible board, belonging to the technical field of flexible circuit boards. Background technique [0002] With the cost reduction and progress of flexible circuit board production technology, it is widely used in electronic products, lighting equipment and other equipment, but in actual use, it is found that in the production and preparation of the currently used flexible circuit board, it is connected with the flexible circuit board. The lighting lamp beads, resistors and other electrical components need to be connected by welding operations. At present, when such welding operations are carried out, the traditional welding process is used, that is, the auxiliary welding tin, soldering and other auxiliary materials are first applied to the position to be welded. Then, the electrical components are connected to the flexible...

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Problems solved by technology

[0002] With the cost reduction and progress of flexible circuit board production technology, it is widely used in electronic products, lighting equipment and other equipment, but in actual use, it is found that the flexible circuit board currently used is connected to the flexible circuit board in the production and preparation of the flexible circuit board. Lighting lamp beads, resistors and other electrical components need to be connected by welding. At present, when this type of welding is performed, the traditional welding process is used, that is, firstly apply solder, solder and other auxiliary materials on the position to be welded. material, and then connect the electrical components to the flexible circuit board through auxiliary substances such as molten or liquid solder and brazing. Although this method can meet the needs of welding, on the one hand, there are solder, The accuracy of the coating of auxiliary substances such as solder is relatively poor, so it is very easy to cause overflow and flow of auxiliary substances such as solder and solder, which will affect the welding accuracy and quality and cause damage to the circuit board. At the same time, large-scale coating cannot be carried out cloth and coating the upper and lower surfaces of the flexible circuit board at the same time, resulting in relatively poor welding accuracy, efficiency and product quality. Auxiliary substances such as solder and solder often have a large resistivity and uneven distribution of resistivity, and in addition, the resistivity fluctuates greatly due to uneven thickness distribution during the coating of auxiliary substances such as solder and solder. , which seriously affects the energy consumption of the circuit equipment, and it is easy to cause the circuit to generate a large amount of heat and heat points, which are difficult to control and seriously affect the stability and reliability of the circuit system.

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