Abstract: A sublimation furnace has a first endless conveyor belt extending along a first axis through the furnace, with a chamber extending above and along that first conveyor belt. Vacuum trays placed on the first belt have products abutting sublimation images to be transferred to the product as the trays pass through the furnace. The furnace has a first sidewall with a slot extending along the sidewall and along the first conveyor belt. A second endless conveyor belt extends along but offset from the first axis. A plurality of vacuum pumps are connected to the second conveyor belt and move with that belt, with each pump connected by a hose passing through the slot during use of the furnace to a different vacuum tray on the first conveyor in order to evacuate the vacuum trays and press the images against the product for sublimation transfer.

Abstract: A sublimation furnace has a first endless conveyor belt extending along a first axis through the furnace, with a chamber extending above and along that first conveyor belt. Vacuum trays placed on the first belt have products abutting sublimation images to be transferred to the product as the trays pass through the furnace. The furnace has a first sidewall with a slot extending along the sidewall and along the first conveyor belt. A second endless conveyor belt extends along but offset from the first axis. A plurality of vacuum pumps are connected to the second conveyor belt and move with that belt, with each pump connected by a hose passing through the slot during use of the furnace to a different vacuum tray on the first conveyor in order to evacuate the vacuum trays and press the images against the product for sublimation transfer.

Abstract: A sublimation furnace has a cylindrical shape with a V-shaped access opening covered by a door having a curved cover and triangular top that rotate about a longitudinal furnace axis. Curtains on each side of the access opening reduce heat loss while loading or unloading workpieces from a rotating support. A plenum is formed between inner and outer walls of the furnace with a fan circulating heated air through the furnace and plenum and through holes in the rotating support. A furnace control panel is mounted on a multi-axis support fastened to the furnace or a movable support holding the furnace.