Auxiliary tool for fixing electronic component to PCB to be welded

Abstract

The invention discloses an auxiliary tool for fixing an electronic component to a PCB to be welded. The auxiliary tool is an electronic component locating block. An electronic component inserting through hole cooperating with the electronic component to be welded to a designated tin paste contact point of the PCB is at least arranged at the top of the electronic component locating block. During use, the electronic component locating block is put on the front face of the PCB to be located, and it is guaranteed that the electronic component locating block is located stably and does not deviate;the designated electronic component inserting through hole is aligned to the tin paste contact point of the PCB, then the electronic component needing to be welded is inserted from the electronic component inserting through hole, and a pin of the electronic component is aligned and is in contact with the tin paste contact point of the PCB. According to the auxiliary tool, the welding quality of the electronic component is greatly improved, the welding production efficiency is obviously improved, the pin of the electronic component and the tin paste are connected solidly after welding, and thepin of the electronic component is welded in the middle; and the production cost is greatly reduced.

Description

technical field [0001] The invention relates to an auxiliary fixing tool for electronic components, in particular to an auxiliary tool for fixing electronic components on a PCB circuit board for welding. Background technique [0002] 1. At present, most of the circuit boards produced in small quantities use manual welding with electric welding pens to weld electronic components to PCB circuit boards, especially three-dimensional electronic components (such as capacitors and electronic transformers), which are light in weight and cannot be used. Fixed on the surface of the PCB circuit board, you can only hold it with one hand or fix it with tweezers, and weld it to the PCB circuit board with a soldering pen in the other hand, which has high labor costs and low production efficiency; in addition, manual welding Some electronic components that have requirements for positive and negative electrodes will cause reverse welding of positive and negative electrodes, and the product q...

AI Technical Summary

Problems solved by technology

[0002] 1. At present, most of the circuit boards produced in small quantities use manual welding with electric welding pens to weld electronic components to PCB circuit boards, especially three-dimensional electronic components (such as capacitors and electronic transformers), which are light in weight and cannot be used. Fixed on the surface of the PCB circuit board, you can only hold it with one hand or fix it with tweezers, and weld it to the PCB circuit board with a soldering pen in the other hand, which has high labor costs and low production efficiency; in addition, manual welding Some electronic components that have requirements for positive and negative poles will cause reverse welding of positive and negative poles, and the product qualification rate is difficult to guarantee

2. At present, the large-scale and mass-produced circuit boards basically use the placement machine to glue the electronic components to the tin contacts at the designated positions, and then heat the solder paste to reach the melting point and combine with the electronic components. The feet of the device are welded together, and then the temperature is lowered to solidify the solder paste to complete the welding of the electronic components and the PCB circuit board. However, the pressure caused by the difference in the amount of solder on the contacts of the PCB circuit board will cause some electronic components to break. (Damaged), the welding quality cannot be seen intuitively, for example: solder paste has bubbles, is not melted, electronic components have offset contacts, etc.; the cost of using a chip mounter to paste special chip electronic components is high

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