US 2003/0110739 A1Published application

Method and apparatus for detecting product defects during the production of mailing products, hygiene products, or folded paper products

AssigneeWinkler + Duennebier AG

InventorDirk Saas

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Abstract

To detect product defects during the production of mailing products, hygiene products or folded paper products, optical imaging sensors or capacitive sensors monitor at least one characteristic parameter or feature of the products successively moving through the production machine, to detect an actual value of each characteristic parameter or feature of each product. The detected actual value is compared with a stored nominal value for the respective characteristic parameter or feature. The result of the comparison is used to initiate or control a further measure, such as ejecting a defective product from the production line, marking a defective product so that it can be visually recognized and manually removed from the production line, or initiating corrective measures to correct the cause of the defect. The characteristic parameters or features relate to the dimensions, the position, and/or the form of the product or parts of the product.

Claims13

Dependent claims

A method for detecting product defects of products selected from mailing products, hygiene products, and folded paper products, during producing or packaging of said products, comprising the steps:

a) producing or packaging said products in a machine including plural machine components;
b) storing a respective nominal value respectively for each one of at least one characteristic parameter or characteristic feature of said products, with respect to at least one of a dimension, a form, and a position of said products or respective parts of said products;
c) during said producing or packaging of said products, detecting a respective actual value of each said characteristic parameter or characteristic feature of said products, respectively for each individual one of said products;
d) respectively comparing each said actual value with said nominal value for each said respective characteristic parameter or characteristic feature, to provide a respective comparison result indicative of how said actual value compares to said nominal value, for each said individual one of said products;
and
e) in response to and dependent on said comparison result, carrying out a further measure with respect to any defective product among said products for which said comparison result indicates that a defect exists.

3 more elements

Dependencies are inferred from the claim text.