A pretty well done game for your first game jam, good job :)
The controls can sometimes be buggy but it is still playable. The controls can be pretty difficult to control. Maybe an alternative would be helpful. I also don't see a pattern in the output machines. For example in the iron/copper sorting level. I tried to sort them correctly by I could not really predict which one will be coming out. Sometimes two at the same time came out. Not sure if this was on purpose.
But overall, the art of the game looks really good, I especially like the background in the level select. It is also funny how exaggerated some things are, like fast bread was outputed or how fast the ventilator is.