| 摘要 |
<p>This invention relates to an apparatus for inspecting the quality of a ridge of an elastic body, such as a toner scraping blade of a copier and a wiper of a vehicle, in which the quality of the ridge of an edge part has a direct influence upon the function of the product. The inspection apparatus according to the present invention is provided with a table (1) on which an elastic body (B) to be inspected is fixed, a contact needle (4) supported via a piezo-electric acceleration detector (5) so that the contact needle (4) can contact a ridge (C) of an edge part of the elastic body (B), and a transfer unit (2) adapted to move the elastic body (B) together with the table (1) relative to the contact needle (4). The elastic body (B) is moved relative to the contact needle (4) brought into contact with the ridge (C) of the elastic body (B), so that the variation of the contact pressure of the contact needle (4) is converted into voltage signals through the detector (5). A converted voltage signal level is compared with a present reference voltage signal level, and is binary-coded depending upon whether the absolute value of the actual voltage signal level is larger than the reference voltage signal level. It can be decided on the basis of the binary-coded signals whether the ridge (C) of the edge part of the elastic body (B) has any defect.</p> |
