Method and plant for manufacturing articles in the form of...

B - Operations – Transporting – 29 – C

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Details

B29C 67/24 (2006.01) B28B 13/02 (2006.01) B01F 13/00 (2006.01) B29C 31/10 (2006.01)

Patent

CA 2614394

In order to manufacture articles in the form of sheets or blocks of conglomerate stone or stone-like material, single mixes are prepared in mixers (18a,b,c,) arranged in a line and at intervals along a conveyor belt (12), each mixer depositing on said conveyor belt a layer of single mix which is arranged on top of the mix deposited by the mixer immediately upstream, forming a multiple mix which is then fed in an axially offset position to a rotating support (24) provided with homogenizing means and then passes to the vacuum vibrocompression section, after a deaeration step. A crushing device (32) is inserted between each mixer and the underlying belt so as to control the size of the agglomerations in each mix. Means (34) are envisaged for cleaning the upper surface (12a) of the conveyor belt (12) and the crushing devices (32) between the cycles for preparation of the multiple mix.

Pour fabriquer des articles en forme de feuilles ou de blocs de pierre conglomératique ou de matériau du type pierre, des mélanges uniques sont préparés dans des mélangeurs (18a,b,c,) disposés en ligne à des intervalles le long d'un transporteur à courroie (12), chaque mélangeur déposant sur le transporteur à courroie une couche de mélange unique par-dessus le mélange déposé par le mélangeur immédiatement en amont, formant ainsi un mélange multiple qui est ensuite introduit dans une position axialement décalée sur un support rotatif (24) pourvu de moyens d'homogénéisation avant de passer à la section de vibrocompression sous vide, après une étape de désaérage. Un dispositif de broyage (32) est inséré entre chaque mélangeur et la courroie sous-jacente de façon à régler la taille des agglomérations de chaque mélange. Des moyens (34) sont prévus pour nettoyer la surface supérieure (12a) du transporteur à courroie (12) et les dispositifs de broyage (32) entre les cycles de préparation du mélange multiple.

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