老款科凯克电容点焊机3000F，型号K7。电路板是裸露的，使用期间很怕碰到电器元件导致损坏，就想设计一个上壳保护内部电路，看到科凯克旗舰店新款有可选的上壳但是不适用老款点焊机，按照新款外壳的思路设计的这个上壳（图中白色部分），随便制作的还挺严丝合缝的，勉强可以用，很牢固。

The old Kokek capacitor spot welding machine 3000F, model K7. The circuit board is exposed and during use, it is very afraid of touching electrical components and causing damage. Therefore, I wanted to design an upper shell to protect the internal circuit. I saw that the new flagship store of Kekek has an optional upper shell, but it is not suitable for the old spot welding machine. I designed this upper shell according to the idea of the new shell (the white part in the picture), which is made casually and is quite tightly sewn, barely usable, and very sturdy.