A welding method for air purifier honeycomb mesh

Abstract

The invention relates to a welding method for an air purifier honeycomb mesh. The welding method comprises the following steps: I, cleaning zinc coated sheets: removing impurities from the surfaces of the zinc coated sheets which are continuously bent positively and negatively in a trapezoidal way; II, performing screen printing of soldering paste: performing screen printing of soldering paste on the joint faces of the zinc coated sheets which are continuously bent positively and negatively in a trapezoidal way through a silk screen, wherein screen printing is performed at three positions on each joint face; III, assembling the honeycomb mesh: putting the zinc coated sheets which are screen-printed with the soldering paste into a honeycomb mesh welding fixture one by one and clamping, thereby constructing the air purifier honeycomb mesh with a plurality of hexagonal holes; IV, heating and welding: putting the air purifier honeycomb mesh and the honeycomb mesh welding fixture into a drying oven for heating till the soldering paste is molten, welding, discharging and performing air cooling to the room temperature; V, loosening the honeycomb mesh welding fixture, and taking the air purifier honeycomb mesh out to obtain a finished product. The production efficiency can be increased greatly, a clad layer close to a welding spot is protected from being damaged, the product quality is enhanced, and the manufacturing cost is lowered.

Description

technical field [0001] The invention relates to a welding process for parts of an air purifier, in particular to a welding method for a honeycomb mesh of an air purifier. Background technique [0002] The honeycomb net is an important part of the air purifier. It kills harmful bacteria in the air through the formed high-voltage electric field, and at the same time has the function of absorbing small particles of dust and impurities in the air. CN 201510936 U discloses an air purifier, comprising a housing and a purification device, the purification device is installed inside the housing; the purification device includes an electric field module, electrodes and a honeycomb net, the electrodes and the honeycomb The nets are respectively connected to the electric field modules and are located on one side of the electrodes. A high-voltage electric field is formed between the electrodes and the honeycomb nets. Small particles of dust and impurities in the air are absorbed when pa...

AI Technical Summary

Problems solved by technology

[0003] (1) Production efficiency is very low: a honeycomb net consists of dozens of galvanized sheets, and two people use resistance spot welding to fix and connect dozens of galvanized sheets. One shift can only complete about 50 pieces of small-sized honeycomb nets , the efficiency of producing larger specifications is lower, and the labor intensity of workers is greater

[0004] (2) Since the zinc layer near the solder joint is damaged by the resistance heat generated during welding, the zinc layer bursts and splashes, which not only destroys the integrity of the zinc layer, but also increases the chance of corrosion, and the splashed oxide pollutes the inside and outside of the product Therefore, remedial treatment is required after welding: anti-rust treatment of the damaged surface is required, and the inner and outer surfaces are cleaned, which increases the production cost

In addition, since the unshed part of the zinc layer near the solder joint will form a conductive tip, if it is not removed, it will cause product defects, which must be removed by grinding or other mechanical methods. While increasing manufacturing costs, there will also be Hidden danger of product defects

[0005] (3) When workers operate, they need to hold the parts and use eyes, hands, and feet to cooperate with welding to ensure that the edges of the bonding surfaces are aligned, which can easily cause fatigue of workers due to increased labor intensity and prolonged time, resulting in bonding Surface misalignment causes unqualified, resulting in product scrap

[0006] (4) Once the size of the hexagonal hole of the product is reduced (the diameter of the inscribed circle of the hexagonal hole of this product is 30mm), due to the limitation of the electrode strength of the spot welding machine, the electrode cannot extend into the inner cavity of the hexagonal hole, and spot welding cannot be used

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