Combinational weigher with upstream X-ray weigher, and downstream X-ray inspection
AssigneeNichirei Foods Inc.
InventorsKenji Fukumoto, Takao Eto, Kazuro Ishiyama, Shinya Tsukamoto
Life of this patent
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Abstract
A combined weighing system 1 includes a first X-ray inspection device 20, a combined weighing device 40, a bag making and packaging device 50, a weight inspection device 60, a second X-ray inspection device 70, and a management device 90 that manages each device. The management device 90 revises a weight conversion table of the first X-ray inspection device 20 and a correction value of the combined weighing device 40 based on an average value of weights of products B, which is calculated from a result of inspection over a certain time period in the weight inspection device 60.
Claims6
A combined weighing system comprising:
- a first X-ray inspection device that irradiates articles with X-rays to acquire first X-ray images, detects weights of the articles based on the first X-ray images and a weight conversion table set in advance, and inspects whether or not an average value over a certain time period of unit weight values is in an allowable weight range, the unit weight value representing a weight of one article;
- a combined weighing device that performs combined weighing on the articles, which have been inspected by the first X-ray inspection device, so as to acquire a weight obtained by adding a correction value to a combination lower limit value, and supplies the articles on which the combined weighing has been performed;
- a packaging device that packages a plurality of the articles, which are combined by the combined weighing device, in a bag;
- a weight inspection device that inspects weights of packages in each of which the plurality of articles are packaged in the bag;
- a second X-ray inspection device that irradiates the packages, which have been inspected by the weight inspection device, with X-rays to acquire second X-ray images, and inspects the number of the plurality of articles in each of the packages based on the corresponding second X-ray image;
- and
- a management device that manages each device,
- wherein the management device revises the weight conversion table of the first X-ray inspection device and the correction value of the combined weighing device based on an average value of the weights of the packages, which is calculated from a result of the inspection over a certain time period in the weight inspection device.
A combined weighing method to be executed by a combined weighing system including a first X-ray inspection device that irradiates articles with X-rays to acquire first X-ray images, detects weights of the articles based on the first X-ray images and a weight conversion table set in advance, and inspects whether or not an average value over a certain time period of unit weight values is in an allowable weight range, the unit weight value representing a weight of one article,
- a combined weighing device that performs combined weighing on the articles, which have been inspected by the first X-ray inspection device, so as to acquire a weight obtained by adding a correction value to a combination lower limit value, and supplies the articles on which the combined weighing has been performed,
- a packaging device that packages a plurality of the articles, which are combined by the combined weighing device, in a bag,
- a weight inspection device that inspects weights of packages in each of which the plurality of articles are packaged in the bag,
- a second X-ray inspection device that irradiates the packages, which have been inspected by the weight inspection device, with X-rays to acquire second X-ray images, and inspects the number of the plurality of articles in each of the packages based on the corresponding second X-ray image, and
- a management device that manages each device,
- wherein the management device revises the weight conversion table of the first X-ray inspection device and the correction value of the combined weighing device based on an average value of the weights of the packages, which is calculated from a result of the inspection over a certain time period in the weight inspection device.
A combined weighing program that causes a computer of a management device to execute functions in a combined weighing system including a first X-ray inspection device that irradiates articles with X-rays to acquire first X-ray images, detects weights of the articles based on the first X-ray images and a weight conversion table set in advance, and inspects whether or not an average value over a certain time period of unit weight values is in an allowable weight range, the unit weight value representing a weight of one article,
- a combined weighing device that performs combined weighing on the articles, which have been inspected by the first X-ray inspection device, so as to acquire a weight obtained by adding a correction value to a combination lower limit value, and supplies the articles on which the combined weighing has been performed,
- a packaging device that packages a plurality of the articles, which are combined by the combined weighing device, in a bag,
- a weight inspection device that inspects weights of packages in each of which the plurality of articles are packaged in the bag,
- a second X-ray inspection device that irradiates the packages, which have been inspected by the weight inspection device, with X-rays to acquire second X-ray images, and inspects the number of the plurality of articles in each of the packages based on the corresponding second X-ray image, and
- the management device that manages each device,
- wherein the weight conversion table of the first X-ray inspection device and the correction value of the combined weighing device are revised based on an average value of the weights of the packages, which is calculated from a result of the inspection over a certain time period in the weight inspection device.
Dependencies are inferred from the claim text.