Pressing die device for air inlet rings for centrifugal fans

Abstract

The invention relates to a pressing die device for air inlet rings for centrifugal fans. The pressing die device comprises a top transverse beam, a worktable, a fixed transverse beam, a movable transverse beam and a die. A first oil cylinder and a second oil cylinder are arranged on the top transverse beam, lifting shafts are arranged on the first oil cylinder and the second oil cylinder, a plurality of guide columns are arranged between the top transverse beam and the worktable, a plurality of connecting sleeves which fixedly sleeve the side walls of the fixed transverse beam are arranged between the top transverse beam and the worktable, a plurality of guide block groups are arranged on the side walls of the movable transverse beam, the die comprises an upper die set, a die core, a lower die set and a connecting guide column, the upper die set comprises an upper die plate and a lower die plate, first fixing bolts are arranged on first fixing blocks, the lower die set comprises a first lower die plate and a second lower die plate, second fixing bolts are arranged on second fixing blocks, and connecting nuts are arranged between the top of the fixed transverse beam and the bottom of the worktable. The pressing die device has the advantages that the inclination of bent flanges and cone cylinders of the air outlet rings can be formed by the aid of the die by means of stamping, and accordingly the pressing die device is favorable for improving the machining efficiency and the quality of workpieces.

Description

technical field [0001] The invention relates to a pressure molding device for an air inlet ring for a centrifugal fan, which belongs to the technical field of fan production. Background technique [0002] ​With the advancement of my country's industrialization process, the industrial sector is vigorously carrying out energy conservation and consumption reduction, industrial upgrading and integration and reorganization, and industrial infrastructure equipment needs a large number of updates. Centrifugal fan is a driven fluid machine, relying on the input mechanical energy to increase the gas pressure and discharge the gas. As an important supporting equipment in industry, it will be more used in electric power, cement, petrochemical, coal, mining and environmental protection, etc. In the new economic development situation, the centrifugal fan industry will continue to maintain rapid growth in the future. [0003] At present, the manufacture of the centrifugal fan inlet ring ...

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Problems solved by technology

[0003] At present, the manufacture of the centrifugal fan inlet ring is mainly through rolling and mold pressing. The single rolling forming process must use welding flanges, which indirectly increases the working hours. At the same time, due to the large number of centrifugal fan models and series, traditional mold Compression molding often requires a large number of molds, which greatly increases the time for mold replacement and repair, and has the disadvantages of low efficiency and difficult control of the quality of processed products

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