Automatic coating system for lost wax process

An automatic coating system for making a set-up by coating a wax pattern with a refractory material in lost wax process, comprising a set-up pickup device adapted for picking set-ups one by one from a set-up storage section, whereby said set-ups enter said system;

• a slurry dipping device adapted for receiving said set-ups and for dipping said set-ups in a slurry of a coating refractory material;
• a sanding device adapted for receiving said set-ups and for depositing sand on the surface of said set-ups;
• and a set-up taking-out device for taking said set-ups out of said system, said devices being disposed on a common circle, said automatic coating system further comprising a set-up transportation device disposed at the center of said circle and having means for causing vertical movement of the set-ups and rotary movement of the set-ups around said common circle from one device to the next respective device for transporting said set-ups from predetermined positions in respective devices to predetermined positions in respective next devices, wherein said set-up pickup device includes a main body having at least two vertical guide posts, an arm for holding said set-up and for removing said set-up from said set-up storage section, cylinder means adapted for moving said arm up and down in the longitudinal direction of said guide posts, cylinder means adapted to drive said arm back and forth in the direction perpendicular to the longitudinal direction of said guide posts, a sensor carried by said arm and adapted to detect a set-up positioned in said set-up storage section, and electric relays adapted to operate in response to a signal from said sensor, whereby said arm is moved up and down and back and forth by a cooperation of said electric relays, sensor and said cylinder means to remove set-ups one by one from said storage section.

An automatic coating system for making a set-up by coating a wax pattern with a refractory material in lost wax process, comprising a set-up pickup device adapted for picking set-ups one by one from a set-up storage section, whereby said set-ups enter said system;

• a slurry dipping device adapted for receiving said set-ups and for dipping said set-ups in a slurry of a coating refractory material;
• a sanding device adapted for receiving said set-ups and for depositing sand on the surface of said set-ups;
• and a set-up taking-out device for taking said set-ups out of said system, said devices being disposed on a common circle, said automatic coating system further comprising a set-up transportation device disposed at the center of said circle and having means for causing vertical movement of the set-ups and rotary movement of the set-ups around said common circle from one device to the next respective device for transporting said set-ups from predetermined positions in respective devices to predetermined positions in next respective devices, wherein said set-up taking-out device includes a main body having at least two vertical guide posts, an arm for holding a set-up and for transferring the set-up to a shelf of a set-up cart, cylinder means for driving said arm up and down in the longitudinal direction of said guide posts, cylinder means adapted for driving said arm back and forth in the direction perpendicular to said guide posts, a first sensor carried by said arm and adapted to detect whether a set-up shaft is positioned on a shelf on said set-up cart, a second sensor carried by said arm and adapted to detect the shelf of said set-up cart, and electric relays operative in response to the signals derived from said first and second sensors, whereby said arm is moved up and down and back and forth by a cooperation of said sensors, electric relays and cylinder means to transfer the set-up to a shelf of said set-up cart.