Burger king has had fully automated burger cookers for about as long as I've been alive. They're mechanically interesting and I got to study one on a school tour. It turns out the needs for sanitation and cleanliness are the driving design factor and even a "simple" flame-throwin' grill is bumping up against the economic limits at this time. Dealing with bread and refrigerated vegetables would result in the cleaning, sanitization, and QA costs exceeding the cost of simply doing it by hand.
Also simplicity of troubleshooting is critical, in an industry where all non-customer facing labor has converted completely over to illegal aliens. A "paper jam" in the sandwich wrapper, or similar, cannot be allowed to completely shut down the facility. Also employee turnover is an issue, monkey-see monkey-do works pretty well for repetitive manual labor, not so well for obscure robotic troubleshooting procedures.
In summary we have numerous robotic / automated appliances but the majority of labor in a kitchen is best done by hand for numerous design and financial constraints.
Also simplicity of troubleshooting is critical, in an industry where all non-customer facing labor has converted completely over to illegal aliens. A "paper jam" in the sandwich wrapper, or similar, cannot be allowed to completely shut down the facility. Also employee turnover is an issue, monkey-see monkey-do works pretty well for repetitive manual labor, not so well for obscure robotic troubleshooting procedures.
In summary we have numerous robotic / automated appliances but the majority of labor in a kitchen is best done by hand for numerous design and financial constraints.