The concept
Pour sincere mold pictures under the action of external force and the blank into a certain shape and size of the workpiece tool. Widely used for punching, forging, cold forging, extrusion, powder metallurgy pressing, pressure casting, as well as engineering plastics, rubber, ceramics and other products of the compression molding or injection molding. Die with the contour or shape of the inner cavity of the specific application, with contour edge can make the blank shape according to the contour line separation (punching). The inner shape of the blank application can obtain corresponding stereo shape. Mold generally comprises a movable mould and the fixed mould (or convex and concave mold) of two parts, the two can be combined. Apart from the blank parts, folding into the mould cavity forming. The mold is a precision tool, complex shape, bearing blank expansion force, have higher requirements on the structure strength, stiffness, surface hardness, surface roughness and machining precision mold production, development level is an important sign of the level of manufacturing.
Species
Many types of mold, according to the processing object and process can be divided into: mold processing of metal. Mold the processing of nonmetal and powder metallurgy. Including plastic mold (such as injection molding, pressure molding and extrusion die etc.), rubber mold and powder metallurgy die etc.. According to the structural characteristics, the cavity die can be divided spatially flat blanking die and. Mold generally is a one-piece, small batch production.
Composition
In addition to its own mold, mold base, mold is needed, the guiding device and the workpiece ejecting device, these components are generally made of general type. Die enterprises need to become a fine, according to the market demand, and the technology, capital, equipment and other conditions, to determine the product positioning and market positioning, these practices are particularly worthy of small and medium-sized enterprises and learn from, concentrating to form their own technology advantages and product advantages gradually. Therefore, China's mold enterprises must actively learn from foreign the experience of advanced enterprises, so that the development of a better future
