Automatic screening device for pearls

Abstract

The invention relates to an automatic screening device for pearls. Firstly, pearls to be screened are guided into the device through a feed hopper, conveyed to a vibration plate through a dischargingshaft, and evenly scattered and conveyed to a sample plate after vibration; through holes with the diameter being 3 mm are machined in the surface of the sampling plate, and the pearls are clamped inthe holes separately; each pearl is divided into an upper surface and a lower surface through the sampling plate, and images of the upper surface and the lower surface of each pearl are obtained through CCD industrial robots at the upper end and the lower end correspondingly; and all the pearls are numbered for grading after image processing and computational analysis, then the pearls are sucked out of the through holes of the sampling plate by rubber suckers, and by moving crossed sliding blocks in the X-Y plane, the pearls are put in corresponding partitions of a distribution box.

Description

technical field [0001] The invention relates to the technical field of pearl processing, in particular to an automatic pearl screening device. Background technique [0002] In addition to being widely used in decorations, natural pearls and artificially cultivated pearls also have important medical value. In the pearl processing process, the screening of pearls is one of the most important processes. Pearls with different roundness, diameter, and color have different market values. Since pearls have large individual differences, and it is difficult to distinguish between color and shape, the screening process will consume a lot of resources for large-scale production and processing enterprises. A lot of time and labor costs. In the prior art, the diameter, size and shape of pearls are generally screened manually or by ordinary screening machines. The manual method is suitable for small batch processing. Most of the ordinary screening machines use round or oval holes of ...

AI Technical Summary

Problems solved by technology

The screening accuracy of the above devices depends on the diameter of the through-holes processed on the vibrating plate. For pearls with large diameter differences, it is difficult to subdivide each pearl due to the limited number of through-holes on the vibrating plate. big limitations

At the same time, when the ordinary screening machine screens through the multi-stage vibrating plate, it will often cause a certain degree of damage to the surface.

In addition, the current ordinary pearl screening machine lacks the identification function of the luster of pearls, and enterprises still rely on a large amount of manpower to distinguish the grades of pearls through human eye identification. This process increases the labor cost of the enterprise and reduces the processing efficiency.

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