When you need a specific machine, there are always three options.
The first option is that you investigate which machines are already on the market. Perhaps there is already a machine that does what you expect, possibly with a few adjustments. The second option is that you design and build the machine yourself. The last option is that you approach a specialized machine builder.
Because mechanical engineering is a profession in its own right and requires specific knowledge and expertise, the latter option is often the best choice.