I think you should be able to understand the parts drawing of a single piece, but what you can’t understand is the mold assembly drawing. You can look at this together with the parts drawing and assembly drawing. Look at which part the cross-section diagram on the assembly drawing represents, and check the parts one by one. Of course, you must first have an overall understanding of the entire mold set, know which part should be in which position, and what this part is. How to express it on three views. Compared with machine tool assembly drawings, mold assembly drawings are relatively simple. Generally, they are punches, ejector pins, punches, dies, cores, cavities, fixing plates, unloading plates, pins, screws, etc. The main thing is to practice more and practice more. I believe you will be able to master this technology.