Stamping die for needle-shaped electrode, plasma needle-shaped electrode and preparation method of plasma needle-shaped electrode

Abstract

The invention discloses a stamping die for a needle-shaped electrode, the plasma needle-shaped electrode and a preparation method of the plasma needle-shaped electrode. The stamping die comprises a female die and a male die, wherein a plurality of protruding units are arranged on the male die, grooves identical to the protruding units of the male die in shape are formed in the corresponding positions of the female die, and after the male die rotates by a certain angle or transversely moves by a certain distance, the overlapped portions of the positions of the protruding units and the positionsof the protruding units before the male die rotates or transversely moves are in needle tip shapes. The plasma needle-shaped electrode is prepared by using the stamping die, and the preparation method comprises the following steps: (1) stamping a metal material with a certain size by using a stamping machine and the stamping die to obtain a semi-finished electrode; and (2) stamping the semi-finished electrode again after moving the semi-finished electrode by a certain distance to obtain the plasma needle-shaped electrode. The stamping die and the method are high in production efficiency and low in production cost, the fineness, the distance and the height of needle tips of the needle-shaped electrode can be guaranteed, the production cost can be reduced, and the environment is protected.

Description

technical field [0001] The invention relates to the field of indoor air disinfection and indoor air purification, in particular to a stamping die for a needle electrode, a plasma needle electrode and a preparation method thereof. Background technique [0002] Plasma air sterilizers (purifiers) have been widely used in hospitals, food processing plants, schools, and are mainly composed of shells, fan components, plasma reactors, control circuits and filters. The fan assembly, plasma reactor, control circuit and filter screen are all installed in the casing, and the casing is designed with air inlet and outlet. Through the centrifugal force of the fan assembly, the air passes through the air inlet, and the dust, particles and other sundries are filtered out by the filter screen, and then the plasma reactor is used for sterilization and dedusting and purification. After treatment, the air is sent out through the air outlet. The above process is repeated many times to realize t...

AI Technical Summary

Problems solved by technology

Because the positive electrode in the equidistant needle tip state has high requirements on the fineness of the needle tip size, the existing laser cutting technology and disposable mold stamping forming technology cannot meet the processing requirements, and the laser cutting technology will melt the needle tip due to its high temperature characteristics. , so it cannot be applied; the one-time mold stamping forming technology cannot reach the required fineness due to the limitation of the precision of the mold

The existing wire cutting method is available, but because the positive electrode in the state of equidistant needle tip has high requirements on the fineness of the needle tip size, so only the wire cutting slow wire processing technology can be used. This technology has the following disadvantages: 1. The consumption The energy is large and the man-hours are long, so the processing cost is high and the production efficiency is low; 2. Because the high temperature generated during wire cutting has oxidation and carbonization on the cut surface of the processed metal material, the processed positive electrode cannot Directly used in the production and assembly of plasma, the oxidation and carbide on the positive electrode need to be removed by polishing process (the oxidation and carbide on the positive electrode are extremely difficult to discharge)

The polishing process generally adopts electrochemical methods, which results in increased production costs and pollution to the environment

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