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Current position:Home > News>Brief introduction of mould machinery

Brief introduction of mould machinery

Time:2021-12-31 Click Quantity:
The die has specific contour or inner cavity shape, and the contour shape with cutting edge can separate the blank according to the contour shape, that is, blanking. The shape of the cavity can make the blank get the corresponding three-dimensional shape. Mold is generally divided into two parts: dynamic and fixed die, or punch and die. They can be separated. Separate the fashion into billets or take out the parts, and make the parts and billets separate or form when closing. In punching, forming, punching, forging, cold heading, pressing and pressing, the force needed to separate or form is applied to billet by mould.
During extrusion, die casting and injection molding, external force is applied to billet by air pressure, plunger, punch and so on. The die bears the bulging force of the blank. In addition to the mold, the mold also needs the mould base, the mold frame, the guiding device and the ejection device. These parts are generally made into general type and are suitable for a certain range of different moulds. High precision and accurate size, the gap between punch and die of some blanking dies is close to 0; stamping speed is fast, punching dozens of times per minute to thousands of times; die life is long, and some silicon steel sheet blanking die life is more than a few million times.
In the stamping process, the blanks are formed by continuous stamping through multiple positions to the final position, which is called the progressive die, also known as the continuous die. The existing 20 level and 30 level progressive die, from coiling, leveling, stamping, until the production of parts and stacking, has been fully automated, the productivity has been greatly improved. It's a 6 position progressive die for motor stator and rotor silicon steel sheet blanking. First position punching guide pin hole, shaft hole, key slot each two, second position punching rotor shaft hole, 22 rotor slot holes, third position flush 24 stator slot, fourth position rotor blade, fifth position vacancy, Sixth Station stator sheet falling material, waste cut off.
The mold has many complicated forms, and the working conditions are bad. The red steel above 1000 degrees is deformed and washed in the mold cavity. The die should bear the high speed impact of the forging hammer or the pressure of heavy load. In the process of use, the die is often in the state of sudden cold, hot and cold and heat alternating. Mold materials should have high strength, toughness and wear resistance. When hot forging, they must have high temperature strength and hardness and undergo toughening and heat treatment.
The application of the mold is very wide. A large number of mechanical and electrical products, such as automobiles, bicycles, sewing machines, cameras, motors, electrical appliances, instruments and so on, as well as the manufacture of daily appliances have been used in a large number of moulds. The mold is basically a single piece of production, its shape is complex, the structure strength, stiffness, surface hardness, surface roughness and machining precision are very high requirements, so the mold production needs a very high technical level. The timely supply and quality of mould directly affect the quality and cost of products and the development of new products. The development level of mould production is one of the important signs of machinery manufacturing level.

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