The utility model discloses a circuit board
coating curing oven which comprises a curing oven body, a
processing device is arranged in the curing oven body and comprises a flowing bin, a spraying head, a filter plate and a storage bin, the filter plate is arranged below the curing oven body, the storage bin is installed at the bottom end of the filter plate, the spraying head is installed in the curing oven body, and the top end of the curing oven body is connected with a connecting device. The connecting device comprises a conveying
pipe, a movable block, a clamping mechanism, an inserting
pipe, a sealing
gasket, a clamping groove, a
rubber ring, a rotating frame, a sliding rod, a spring, a sliding block, a positioning groove, a sliding groove, a rotating sleeve and a limiting plate, the movable block is arranged on one side of the rotating sleeve, the sealing
gasket is installed in the inserting
pipe, the
rubber ring is matched with the clamping groove, and the rotating frame is arranged on the outer side of the rotating frame. The sliding rod is installed on the inner side of the rotating frame, the spring is installed in the rotating sleeve, one end of the sliding block is connected with the spring, the positioning grooves are formed in the two ends of the sliding groove, the limiting plates are arranged on the two sides of the rotating frame, and the sealing device is arranged on one side of the curing oven.