| 摘要 |
Detector located in the packaging chain after the closure process. It detects and individually isolates those containers, made from metal or glass, whose closure is defective owing to the absence of a lid or a vacuum. The detector centres the container by means of two discs mounted on shafts; a direct reflection sensor will emit a beam, being reflected when a container interrupts it, producing a signal which, picked up by a transistor, will actuate an inductive sensor, actuating a dual-effect cylinder which will expel the container without a lid. Measurement of the vacuum. An inductive sensor emits a signal which is picked up by an electrovalve, activating a single-effect cylinder which will lower a mechanism of two discs with springs towards the lid. When the disc presses the lid, the sensor will emit a signal in accordance with the level of the vacuum. <IMAGE>
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