SANDING MACHINE OF CLOSED SURFACES (Machine-translation by Google Translate, not legally binding)

Sanding machine for closed surfaces, for concave pieces (5) with a continuous surface comprising a generating line, comprising a continuous band (1) of rough material, or sandpaper, movable between at least two rollers (2, 3 , 4), at least one of them being a motor roller (2), characterized in that: the rollers (2, 3, 4) are arranged vertically and comprise at least one mold roll (4), whose surface forms the negative of the generatrix line of the part (5); and that is located next to a horizontal support table (9) of the piece (5) where a stop (6) is arranged movable against each mold roll (4), on the rough side of the continuous band (1), which has a vertical axis perimeter rolling element. (Machine-translation by Google Translate, not legally binding) 1. Máquina de lijado de superficies cerradas, para piezas (5) cóncavas con una superficie continua que comprende una línea generatriz, que comprende una banda continua (1) de material rugoso, o lija, móvil entre al menos dos rodillos (2, 3, 4), al menos uno de ellos siendo un rodillo motor (2), caracterizada porque: los rodillos (2, 3, 4) están dispuestos en posición vertical y comprenden al menos un rodillo de molde (4), cuya superficie forma el negativo de la línea generatriz de la pieza (5); y que está situado próximo a una mesa (9) horizontal de apoyo de la pieza (5) donde se dispone un tope (6) móvil contra cada rodillo de molde (4), por el lado rugoso de la banda continua (1), que posee un elemento de rodadura perimetral de eje vertical.