SU1000365A1 - Apparatus for monitoring material edge position - Google Patents

Description

one

The invention relates to the textile industry, more specifically to devices for controlling the position of the edge of the fabric.

A device for monitoring the position of a material edge is known, comprising two edge position sensors installed with the possibility of relative movement in a direction perpendicular to the direction of movement of the material, each of which contains a photodetector symmetrically located between two radiation sources and the optical axis of which is perpendicular to the plane of movement of the material, and the optical axes of the photodetector and radiation sources of each edge position sensor are located in the same plane 1).

The main drawback of the device is the low accuracy in controlling the position of the edge of the material.

The purpose of the invention is to improve the accuracy of control.

This goal is achieved due to the fact that in a device containing two edge position sensors installed with the possibility of relative movement in the direction perpendicular to the direction of movement of the material, each of which contains a photodetector symmetrically located between the two radiation sources and the optical axis

5 which is perpendicular to the plane of motion of the material, and the optical axes of the photodetector and radiation sources of each edge position sensor are located in one plane, according to the invention, the angle between the optical axes of the radiation sources of each edge position sensor is 10-30 °, the distance between the planes the position of the optical axes of the photodetector and the radiation sources of the edge position sensors are not

15 is less than the distance from the receiving part of the photodetectors to the plane of motion of the material, and the distance between the optical axis of the photodetector and the middle of the output parts of the radiation sources of each edge position sensor is half the distance from the receiving part of the photodetector to the plane of motion of the material.

FIG. 1 shows the device, front view; in fig. 2 shows section A-A in FIG. one

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Claims (1)

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