Width measuring apparatus
First Claim
1. A width measuring apparatus, comprising:
- a single light emitting element located on one side of a plurality of travelling elongated objects to be measured for projecting laser beams which expand in the width direction of the elongated objects to be measured so that the laser beams are projected to the entire width of at least two of the elongated objects traveling in parallel with each other;
a plurality of pairs of light receiving elements located on another side of the elongated objects to be measured in correspondence thereto for respectively receiving each of pairs of partial laser beams of the laser beam from the light emitting elements, the partial laser beams, passing by the elongated objects without being shaded by the elongated objects, and for detecting the light quantities of the received partial laser beams;
a measurement support table for fixing the plurality of pairs of light receiving elements disposed in parallel with each other in the width direction of the elongated objects to be measured; and
a calculating device for calculating the widths of the plurality of elongated objects to be measured from the respective light quantities received by the plurality of pairs of light receiving elements.
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Accused Products
Abstract
The width measuring apparatus according to this invention includes a light emitting element, a pair of light receiving elements, a measurement support table for fixing them and calculating device, where a pair of partial laser beams of the laser beam from the light emitting element which are not projected over a traveling elongated object to be measured are received by the light receiving elements, and a width of the elongated object calculated from the received light quantities of the pair of partial laser beams. The width measuring apparatus according to this invention further includes a single light emitting element, pairs of light receiving elements, a measurement support table for fixing and calculating devise, where pairs of partial laser beams of the laser beams from the light emitting element which are not projected over traveling elongated objects are received by the light receiving elements, and widths of the elongated objects are calculated from light quantities of the received partial laser beams. Based on the apparatus, it can continuously and optically measure the width of the object in a non-contact fashion with a less amount of measuring error, and measure the widths of the objects at a less expensive cost, securing a working space.
23 Citations
10 Claims
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1. A width measuring apparatus, comprising:
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a single light emitting element located on one side of a plurality of travelling elongated objects to be measured for projecting laser beams which expand in the width direction of the elongated objects to be measured so that the laser beams are projected to the entire width of at least two of the elongated objects traveling in parallel with each other;
a plurality of pairs of light receiving elements located on another side of the elongated objects to be measured in correspondence thereto for respectively receiving each of pairs of partial laser beams of the laser beam from the light emitting elements, the partial laser beams, passing by the elongated objects without being shaded by the elongated objects, and for detecting the light quantities of the received partial laser beams;
a measurement support table for fixing the plurality of pairs of light receiving elements disposed in parallel with each other in the width direction of the elongated objects to be measured; and
a calculating device for calculating the widths of the plurality of elongated objects to be measured from the respective light quantities received by the plurality of pairs of light receiving elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification