A visual detection method for the position of the support in the mold of an automobile seat

Abstract

The invention discloses a method of visually detecting the position of a supporting piece in an automobile seat mold, which is applied to a system of visually detecting the position of the supporting piece in the automobile seat mold. A monitoring lens of a supporting piece image monitoring equipment is positioned above the supporting piece and is parallel to the bottom surface of an inner cavity of the mold; an included angle between linear laser beams emitted by a line laser and the bottom surface of the inner cavity of the mold is theta; the value of theta must ensure that all the linear laser beams are projected onto the bottom surface of the inner cavity of the mold, but the projection angle cannot be 90 degrees; the supporting piece image monitoring equipment is connected to a processor; the processor is used for receiving a supporting piece image obtained by the supporting piece image monitoring equipment and for judging whether the supporting piece deviates according to the pixel positions of laser bright spots on the supporting piece in the supporting piece image, wherein the laser bright spots on the supporting piece are generated by line laser beam projection. The method has the beneficial effects that the method has low requirement on contrast ratios of the mold and the supporting piece in the mold, the problems of environmental protection caused by spraying pigment and durability can be avoided, and the recognition rate can be remarkably increased.

Description

technical field [0001] The invention belongs to the technical field of machine vision, and relates to a position visual detection method, in particular to a line laser projection-based visual detection method for the position of a support in an automobile seat mold. Background technique [0002] When polyurethane foams, the inner cavity of the foam molding mold is generally equipped with inner supporting steel wires. The deviation of the position of the inner support wire directly affects the quality of the foamed product. On the foaming production line, the main reasons that directly lead to the unqualified and irreparable foam molding products include the lack of inner support wires and excessive positional deviation. In order to ensure the qualified rate of molded products, it is particularly important to monitor the position of the inner support wire during the foaming production process. [0003] At present, a main method for identifying the position of the support wi...

AI Technical Summary

Problems solved by technology

[0004] However, the above method has high requirements on the processing technology of the mold and the inner support wire, and the contrast between the mold and the inner support wire must be ensured

And due to the environmental protection and durability of spray paint, when the above recognition method is directly used in practice, the recognition rate is very low

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