Manufacturing method of spiral filter screen and its filter screen forming mechanism

Abstract

The invention provides a manufacturing method for a spiral filtering net and a filtering net forming mechanism of the manufacturing method. The manufacturing method includes the steps that notches are formed in a metal sheet through a notching device, the metal sheet is stretched through a stretching device and levelled through a levelling device to form a filtering net semi-finished product of a net-shaped structure; the two side edges of the filtering net semi-finished product of the net-shaped structure are turned up through a turning-up device, one side is turnup upwards, the other side is turnup downwards, and the filtering net semi-finished product enters a net rolling device; net rolling and edge sealing are carried out on the filtering net semi-finished product at the same time through the net rolling device and an edge sealing device to manufacture a spiral filtering net finished product. The spiral filtering net does not need welding, side crops do not exist, and a middle edge sealing strip plays a role in reinforcing the strength of the filtering net. The manufacturing technology is convenient and fast, the structure is simple, generality and reliability are high, and cost is low.

Description

technical field [0001] The invention relates to a filter screen for an air filter, in particular to a method for manufacturing the filter screen of an air filter and a filter screen forming mechanism thereof. Background technique [0002] The air filter is a filter device installed in the intake system of the internal combustion engine of the vehicle. It is used to provide clean air for the combustion in the engine cylinder, so as to prevent the internal combustion engine cylinder block and its parts from being abraded and damaged by the inhaled impurities and dust during work. . At present, the automobile air filter is composed of a shell, a filter element, an end cover, a filter screen (including an inner filter screen, an outer filter screen) and other components. Multiple pieces of filter screens are welded together, leaving welding points, cutting according to different specifications and discarding side materials, which is wasteful and has poor strength. Contents of...

AI Technical Summary

Problems solved by technology

At present, the automotive air filter is composed of a shell, a filter element, an end cover, a filter screen (including an inner filter screen and an outer filter screen), and the filter screen is an ordinary reel-shaped mesh structure, and the material is metal. Multiple pieces of filter screens are welded together, leaving welding points. According to different specifications, they are cut and discarded, which is wasteful and has poor strength.

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