Method and apparatus for steering casting belts of continuous me

Details Method and apparatus for steering casting belts of continuous me Method and apparatus for steering casting belts of continuous me

1989-05-09

1990-07-10

Seidel, Richard K.

Metal founding

Process

With measuring, testing, inspecting, or condition determination

164432, 164429, 164154, 164481, B22D 1106

Patent

active

049400762

ABSTRACT:
A method and system is used for achieving increased precision of steering of the flexible, metallic endless belts of continuous metal-casting machines. Such belts usually have the imperfections inherent in the parent strip metal from which the belt is made. For example, in low-carbon steel, there is generally a "camber," a curvature of the edges in the plane of the strip material. Belts, revolving in the machine, are normally steered through sensing the lateral position of one edge. If the edge is not true, due to camber, the servo steering system of the prior art will continually "hunt" caused by variations in lateral position of the cambered edge. The present invention provides a steering method and system responsive to a single signal source, fixed on a belt edge. This single signal source is achieved by notching or otherwise cuing a belt at one place along an edge so that the steering sensor senses this cue notch as the belt revolves. A first electrical circuit senses this cue notch and activates or initiates, i.e. cues the commencement of a sensing control operation. The sensing control operation, in response to sensing of a tracking error of a predetermined control place or region on the belt following the "cue", then governs the steering mechanism and thereby eliminates or substantially reduces the prior art continual "hunting" steering problems in twin-belt metal casting machines.

REFERENCES:
patent: 3123874 (1964-03-01), Hazelett

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