Colour code deviation rectifying analogue photoelectric eye

Abstract

The color code deviation correcting photoelectric eye consists of casing, circuit board with two analog signal processing circuits, two photoelectronic emitting tubes and one photoelectronic receiving tube over the lens and connected to the circuit board. The two photoelectronic emitting tubes emit light alternately, the lens forms two adjacent light spots for tracking the color difference points, the reflected spot signals received by the photoelectronic receiving tube are amplified, the analog switch separates the signal from the amplifier circuit into two analog signals output to the color code deviation correcting controller, and the controller corrects the deviation based on the deviation direction and amount obtained from the two analog output signals. The present invention has the features of high deviation correcting precision, stable operation, etc. and may be used in packing industry to result in positive effect.

Description

【Technical Field】 [0001] The invention relates to a color mark correction device applied to packaging machinery, and specifically relates to a photoelectric eye for correcting and adjusting the position of the color mark. 【Background technique】 [0002] In the prior art, the photoelectric eye used to correct the position of the color mark on the packaging machine has various structures. Most photoelectric eyes are equipped with a photoelectric transmitting tube and a photoelectric receiving tube on the probe, and the matching circuit board is also provided One channel of analog analog signal output or switch signal output, the photoelectric receiving tube changes the output signal of the photoelectric eye according to the color depth of the color mark to realize correction control. Since this photoelectric eye only has one photoelectric emission tube, the photoelectric receiving tube also receives There is only one signal and no comparable value. Therefor...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, the photoelectric eye used to correct the position of the color mark on the packaging machine has a variety of structures. Most of the photoelectric eyes are equipped with a photoelectric emitting tube and a photoelectric receiving tube on the probe, and the matching circuit board is also equipped with One analog signal output or switch signal output, the photoelectric receiving tube changes the output signal of the photoelectric eye according to the color depth of the color code to realize the deviation correction control. There is only one signal, but no comparable value, so the photoelectric eye can only detect the change of the color scale but cannot detect the offset and direction of the color scale. When this kind of photoelectric eye is used for deviation correction control, it can only rely on human After setting the reference value of the target color in advance and comparing it with the output signal of the photoelectric eye, it dynamically searches for the color mark to correct the deviation. Because it relies on the dynamic search for the color mark to maintain the deviation correction, it has large vibration, high noise and high deviation correction accuracy during work. Inferior disadvantages

How to solve the problem of poor stability and accuracy of this photoelectric eye is a difficult problem that those skilled in the art have always wanted to solve

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