Horseshoe-shaped can multi-view X-ray foreign matter detection equipment

Abstract

The invention discloses multi-view X-ray foreign matter detection equipment for a horseshoe-shaped can. The equipment comprises a detection equipment main body, a control device main body, a conveying belt, a supporting arm, a driving motor, an auxiliary device, a detection box body, a first detector, a second detector, a first X-ray generator, a first collimator, a second X-ray generator and a second collimator. According to the invention, the FPGA and PLC technologies are integrated, so that the problems of detection speed and rejection precision are solved; The problems of insufficient penetrability and imaging precision are solved by using 120 KV / 3.0 mA high-power bulb tube and high-energy and high-precision detector with 0.2 mm acquisition resolution, through actual tests, penetration of thicker product can be realized by high energy, 38mm steel plate can be penetrated under 120 KV / 3.0 mA, and refined X image gray level can be obtained. According to the equipment, a channel with the size of 200mm * 160mm is constructed, and high-precision rapid online real-time detection can be carried out on to-be-detected products with large thicknesses, such as iron sheet cans and horseshoe-shaped cans with the diameters and the thicknesses larger than 12cm.

Description

technical field [0001] The invention relates to the related field of food foreign matter detection, in particular to a multi-view X-ray foreign matter detection device for horseshoe-shaped cans. Background technique [0002] In the prior art, in order to prevent defective products from being shipped due to foreign matter mixed into the product and damage to the product on the product production line, X-ray inspection devices are usually used to inspect the product (such as food boxes or food cans) for defective products , in the radiation detection device, X-rays are irradiated to the inspected object continuously conveyed on the conveying line, and the transmission state of the X-ray is detected by the X-ray light receiving part, so as to judge whether the inspected object is There is foreign matter mixed in. [0003] At present, common X-ray foreign body detection equipment is configured as: low-power bulb (80KV / 2.5mA), 0.4mm acquisition module, DSP control board. The dis...

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Problems solved by technology

[0003] At present, common X-ray foreign body detection equipment is configured as: low-power bulb (80KV / 2.5mA), 0.4mm acquisition module, DSP control board. The disadvantage is: the scintillator of the 0.4mm acquisition module is too thin to receive high-energy X-rays. In addition, due to the small pixel area of ​​the 0.4mm detector, a higher X-ray dose per unit time is required to increase the signal intensity, so the requirements for the X-ray tube current are very high, and there is no better way to improve the tube current. Due to the above reasons, the detector products based on 0.4mm cannot perform penetrating detection on products with high density and large thickness, which leads to insufficient gray scale of X image images of large thickness products, unclear images, slow detection speed, and high rejection accuracy. Insufficient; and before the tank enters the detection station for detection, it is necessary to manually clean up the impurities on its surface one by one to avoid the adhesion of impurities, resulting in poor detection results, but manual processing is more labor-intensive, resulting in reduced work efficiency. And the cleaning effect is poor

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