Adhesive coating device

An adhesive coating device, comprising two adhesive barrels connected side by side, wherein lower ends of the two adhesive barrels are both connected to an adhesive coating assembly, and the adhesive coating assembly comprises:

• an upper substrate having two mounting holes, lower ports of the two adhesive barrels passing through the two mounting holes respectively;
• a lower substrate detachably mounted at a lower side of the upper substrate, wherein an adhesive receiving space is formed between the upper substrate and the lower substrate, and an adhesive coating track is provided on the lower substrate at a position corresponding to the adhesive receiving space, the adhesive coating track is a slit extending through an upper side and a lower side of the lower substrate, and the shape and size of the adhesive coating track match with the shape and size of an adhesive coating track required by a product to be coated with adhesive;
• and wherein,
• the lower ports of the two adhesive barrels are both in communication with the adhesive receiving space.