Grinding machine for all kinds of material, e.g. waste or wood

B - Operations – Transporting – 02 – C

Patent

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Details

B02C 18/14 (2006.01) B02C 18/18 (2006.01)

Patent

CA 2501376

The invention relates to a grinding machine for all kinds of material, said machine comprising: a receiving element for the material (5); at least one shaft (2) positioned in the housing (1) and provided with grinding tools (3); rigid cutting tools (4) which are arranged in the housing (1) and against which the grinding tools (3) operate, grinding the material (5) with specifically low forces. To this end, the grinding tools (3) comprise cutting regions (3.1, 3.2) within which an inner cutting region (3.1) can take a large amount of material (5) to be ground and grind the same, thus comprising a small lever arm, and an outer cutting region (3.2) can take a smaller amount of material (5) to be ground and grind the same, thus comprising a large lever arm. According to the invention, the rigid cutting tools (4) are provided with teeth (4.2) having profiles (4.3) which co-operate with one of the cutting regions (3.1, 3.2), a first transversal edge (3.4) of the grinding tools (3) being oriented towards a second transversal edge (4.4) of a tooth (4.2) of the rigid cutting tools (4) in such a way that it cuts past the same.

La présente invention concerne une machine pour fragmenter des matières de tous types, comprenant: un élément de réception destiné à la matière (5); au moins un arbre (2) disposé dans le boîtier (1) et comprenant des outils de fragmentation (3); des outils de coupe rigides (4) disposés dans le boîtier (1), contre lesquels les outils de fragmentation (3) agissent pour fragmenter la matière (5) par application de forces spécifiquement limitées. A cet effet, les outils de fragmentation (3) présentent des zones de coupe (3.1, 3.2) parmi lesquelles une zone de coupe intérieure (3.1) est capable de prendre en charge et de fragmenter une quantité supérieure de matière à fragmenter (5) et possède pour cela un bras de levier de petite taille, et une zone de coupe extérieure (3.2) est capable de prendre en charge et de fragmenter une quantité inférieure de matière à fragmenter (5) et possède pour cela un bras de levier de grande taille. Selon l'invention, les outils de coupe rigides (4) présentent des dents (4.2) dont les parties latérales (4.3) coopèrent avec l'une des zones de coupe (3.1, 3.2), un premier tranchant transversal (3.4) des outils de fragmentation (3) étant dirigé vers un second tranchant transversal (4.4) d'une dent (4.2) des outils de coupe rigides (4) pour avoir une action coupante à leur passage à proximité l'un de l'autre.

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