Visual inspection system for position of supporting piece in automobile seat die

Abstract

The invention discloses a visual inspection system for the position of a supporting piece in an automobile seat die. The visual inspection system comprises a supporting piece image monitoring device, a line laser and a processor. A monitoring camera of the supporting piece image monitoring device is located above the supporting piece and is parallel to the bottom face of an inner cavity of the die. The included angle between line laser beams transmitted by the line laser and the bottom face of the inner cavity of the die is theta. By means of the theta value, it is guaranteed that all the laser beams are projected to the bottom face of the inner cavity of the automobile seat die, but the projection angle cannot be 90 degrees. The supporting piece image monitoring device is connected with the processor. The processor is used for receiving a supporting piece image obtained by the supporting piece monitoring device, and whether the supporting piece deflects or not is judged according to the pixel positions of laser bright points on the supporting piece in the supporting piece image, wherein the laser bright points on the supporting piece are generated through projection of the line laser beams. The requirement for the contrast ratio of the die and the supporting piece in the die is not high, the problems of environment protection and durability caused by pigment spraying can be avoided, and the identification rate can be obviously increased.

Description

technical field [0001] The invention belongs to the technical field of machine vision, and relates to a position vision detection system, in particular to a line laser projection-based system for visual detection of 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...

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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