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I. Preparatory work before bonding of belt conveyors 1. Select a suitable location underground (with power supply, good ventilation, and favorable conditions), then unroll each roll of conveyor belt to the desired bonding position. 2. Inspection of vulcanization equipment and tools: The belt joint vulcanizers used underground in coal mines must be explosion-proof and meet the requirements for equipment intended for use in coal mines. Due to the need for cooling during operation, joint vulcanization equipment has its own specific characteristics; it differs from commonly used belt joint vulcanizers and requires specialized equipment. (2) Check whether the spare joint tools required for vulcanizing joints are complete. Treatment for peeling of layered fabric conveyor belts: 1. Determine a right angle; cut one end of the belt to create a straight edge, then secure the belt using a G-clamp. 2. Gently use a knife to cut from the edgeless rubber area toward the edge, making a light cut toward the torn area (make another light cut there as well; be careful not to cut through the first layer of fabric). Then, carefully slice open the surface rubber with the knife, and use pliers to peel off the damaged surface rubber. Use a knife to make a cut in the middle of the damaged area on the first layer of fabric; use a peel hook to pry open this layer. Then, make a gentle longitudinal cut to peel off both the surface rubber and the first layer of fabric. Use a knife to make gentle cuts at the designated locations to create openings. Follow this procedure to prepare all four surfaces. During the process of piercing and tearing the fabric, be careful not to damage the layer of fabric beneath it. 3. Lay the knife flat and scrape off the edge glue, so that it becomes almost flush with the four fabric layers. Draw a line on the back at the end of this connector and peel off the skin. Use a grinder to remove any remaining rubber on each layer of fabric, including the adhesive along the joints and any residual rubber on the reverse side. Be careful not to damage the fabric layers. Then, use a wire brush to thoroughly clean the bonding surfaces. 4. Remove all dust and debris from the surface of the sanded tape. II. Bonding and shaping of belt conveyors 1. Clean any debris from the vulcanization plate on the workbench, then overlap the wedge-shaped fingers at both ends of the belts. Recheck the centerlines at both ends and adjust them to form a straight line. Clean the head of the conveyor belt with a cleaner, then apply a coat of hot vulcanizing agent to the wedge-shaped fingers. Make sure the application is even. After it dries, align the belt body according to the pre-marked lines. Crosslap the wedge-shaped fingers and gently press them down with both hands. Check whether the underside of the joint is also smooth and flat. Apply 2–3 coats of hot vulcanizing agent to the surface of the joint, allowing it to fully penetrate into the connecting gaps within the wedge-shaped joint, thereby ensuring a tight bond. 4. Apply the RIT conveyor belt joint uncured core adhesive and RIT uncured surface adhesive to the top of the brushed joint. Make sure to apply them evenly, and use a wallpaper knife to make two cuts on the uncured surface adhesive in order to prevent bulging. III. Vulcanization of belt conveyors 1. After covering the upper and lower surfaces of the joint with vulcanization paper, install the joint vulcanizer in accordance with its installation and usage sequence. 2. After inspecting that the equipment installation is in good condition, perform pressure vulcanization. 3. After the curing time has been reached for the vulcanized joints of the conveyor belt, it is necessary to maintain pressure while cooling down the temperature to below 40°C; then, open the joint vulcanizing machine in the specified direction.