| 摘要 |
<p>Apparatus for testing the resistance to cleavage of cardboard tubes which have previously been cut in the form of test pieces (21). The apparatus according to the invention is characterized in that it comprises a keying mandrel (2) which is mounted free to rotate, at least one sleeve (20) for each different outer diameter of the test pieces (21) and of which the inner diameter is close and at least equal to said outer diameter of the test pieces so that for each test piece corresponds at least one sleeve intended to house said test piece, the keying mandrel (2) being adapted to receive, by keying it, each test piece surrounded by a corresponding sleeve, while a drive belt (22) is provided to be tensioned between said sleeve (20) and a drive device in order to rotatingly drive the assembly comprised of the keying mandrel (2), a test piece (21) and a sleeve (20). The invention relates particularly to tests of cardboard tubes intended to be used as winding formers.</p> |
