1. Maintenance and maintenance of concave and convex molds When disassembling and disassembling concave and convex molds, attention should be paid to the original condition of grinding, welding and cutting tools, which is convenient for easy restoration when installing molds afterwards. and keep records. When dismantling and replacing the mold base, it is necessary to test whether the pouring block is inserted, whether the cavity is smooth, and whether the gap between the insert and the cavity is symmetrical, and whether the gap between the insert and the punching needle is symmetrical when the cavity is replaced. For the reduction of the mold seat after sharpening the mold seat, the sealing gasket must be raised to achieve the necessary length, and it should be checked whether the reasonable length of the mold seat is sufficient. When replacing the broken punch, it is necessary to find out the reason. In addition, it is necessary to check whether the corresponding cavity is chipped or not, and whether the knife edge must be ground. When assembling the mold base, it is necessary to check whether there is sufficient space between the mold base and the fixed block or fixed block, and if there is a pressing block, it is necessary to check whether the theme activity capacity is reserved. The assembled cavity should be embedded horizontally, and then replaced with a flat steel block, such as the surface of the cavity, and tapped with a copper rod in time. Do not place it obliquely and knock it out with super strength. After installation, check whether the die surface is level with the die face. After the mold seat cavity and its mold core are assembled, it is necessary to check the care belt, whether each position is reversed or installed, check whether the cavity and the protective layer cushion block of the cavity are reversed, and whether the blanking hole is blocked. , Whether the new parts must be stolen, whether the material must be stolen is sufficient, and whether the abrasive tool must be clamped tightly. Pay attention to the clamping of the stripper plate screws. When clamping, it needs to be clamped from the inside to the outside, evenly and cross-clamping. It is not allowed to clamp one screw first and then another screw, so as to prevent the stripper plate from tilting and causing mold. The seat is broken, the stainless steel fittings are broken, the steel rigging is cracked or the precision of the abrasive tool is reduced.