Process and device for gluing dried fibres designated for the production of fibreboards

Process of gluing dried fibres which are designated for the production of fibreboards, characterized by the following steps:

• (a) The fibres (4) are supplied to a fibre roller (17) by a metering device (3) through a feed chute (10) which is subjected to negative pressure, which fibre roller is provided on its surface with a plurality of pins (18) and rotates in such a manner
• (b) that the fibres (14) are deflected by the pins (18), are directed along a chute section (22) which is defined by a partial section (20) of the periphery of the fibre roller (17) and an opposite-lying wall (21) and gluing means and that said fibres are accelerated to approximately the peripheral speed of the fibre roller (17) by means of the pins (18) and an air flow generated by said pins,
• (c) wherein the fibres (36) are removed from the fibre roller (17) by reason of the centrifugal force and lie against a section of the wall (21), without yet coming into contact with the pins (18), and wherein the fibres (36) at least once in the course of the wall (21) are brought into contact once again with the pins (18) by means of a metal baffle plate (42) which is inclined in a ramp-like manner in the direction of the pins (18) and the said fibres then lie against a further section of the wall (21) by reason of the centrifugal force,
• (d) the fibres (36) are glued in the region of one of the wall sections, between wall sections or adjacent to one end of the last wall section in the flow direction of the fibres (36),
• (e) and the fibres (36) exit at an outlet orifice (23) of the chute section (22).

Process of gluing dried fibres which are designated for the production of fibreboards, characterized by the following steps:

• (a) The fibres (4) are supplied to a fibre roller (17) by a metering device (3) through a feed chute (10), which fibre roller is provided on its surface with a plurality of pins (18) and rotates in such a manner
• (b) that the fibres (14) are deflected by the pins (18), are directed along a chute section (22) which is defined by a partial section (20) of the periphery of the fibre roller (17) and an opposite-lying wall (21) and said fibres are accelerated to approximately the peripheral speed of the fibre roller (17) by means of the pins (18) and an air flow generated by said pins,
• (c) the fibres (36) exit substantially in a horizontal movement direction at an outlet orifice (23) of the chute section (22),
• (d) the fibres (83) are drawn off by suction in a downward direction and are thereby deflected, and
• (e) the fibres (83) are glued in the deflection region by means of at least one spray nozzle (81, 82) which expels glue and air.

Process of gluing dried fibres which are designated for the production of fibreboards, characterized by the following steps:

• (a) The fibres (4) are supplied to a fibre roller (17) by a metering device (3) through a feed chute (10), which fibre roller is provided on its surface with a plurality of pins (18) and rotates in such a manner
• (b) that the fibres (14) are deflected by the pins (18), are directed along a chute section (22) which is defined by a partial section (20) of the periphery of the fibre roller (17) and an opposite-lying wall (21) and said fibres are accelerated to approximately the peripheral speed of the fibre roller (17) by means of the pins (18) and an air flow generated by said pins,
• (c) the fibres (36) exit substantially in a horizontal movement direction at an outlet orifice (23) of the chute section (22),
• (d) the fibres (83) are drawn off by suction in an upward direction and are thereby deflected, and
• (e) the fibres (83) are glued in the deflection region by means of at least one spray nozzle (81, 82) which expels glue and air.

Device for gluing dried fibres (4) which are designated for the production of fibreboards, characterized in that below an outlet (6) of a fibre-metering device (3) a feed chute (10) which can be subjected to negative pressure extends from the outlet (6) to a fibre roller (17) which comprises on its surface a plurality of pins (18) and can be rotated in such a manner

• that fibres (14) impinging upon the fibre roller (17) are deflected by means of the pins (18),
• are directed along a chute section (22) which is defined by a partial section (20) of the periphery of the fibre roller (17) and an opposite-lying wall (21) and which extends from an outlet orifice (16) of the feed chute (10) in the rotational direction (19) of the fibre roller (17) and is provided with an outlet orifice (23) for the fibres (36),
• and said fibres are accelerated to approximately the peripheral speed of the fibre roller (17) by means of the pins (18) and an air flow generated by said pins, wherein by reason of the centrifugal force the fibres (36) are removed from the fibre roller (17) and lie against a section of the wall, without yet coming into contact with the pins (18),
• and that the chute section (22) is also defined by virtue of means for gluing the fibres (36) which means are disposed in the region of the wall section or adjacent to one end of the wall section.

Device for gluing dried fibres (4) which are designated for the production of fibreboards, characterized in that below an outlet (6) of a fibre-metering device (3) a feed chute (10) which can be subjected to negative pressure extends from the outlet (6) to a fibre roller (17) which comprises on its surface a plurality of pins (18) and can be rotated in such a manner

• that fibres (14) impinging upon the fibre roller (17) are deflected by means of the pins (18),
• are directed along a chute section (22) which is defined by a partial section (20) of the periphery of the fibre roller (17) and an opposite-lying wall (21) and which extends from an outlet orifice (16) of the feed chute (10) in the rotational direction (19) of the fibre roller (17) and is provided with an outlet orifice (23) for the fibres (36),
• and said fibres are accelerated to approximately the peripheral speed of the fibre roller (17) by means of the pins (18) and an air flow generated by said pins, wherein by reason of the centrifugal force the fibres (36) are removed from the fibre roller (17) and lie against a section of the wall, without yet coming into contact with the pins (18),
• that in the chute section (22) there is disposed at least one metal baffle plate (42) which is inclined in a ramp-like manner and which brings the fibres (36) once again into contact with the pins (18), wherein the fibres (36) then lie against a further section of the wall (21) by reason of the centrifugal force,
• and that the chute section (22) is also defined by virtue of means for gluing the fibres (36) which means are disposed in the region of one of the wall sections (21a, 21b), between two wall sections (21a, 21b) or adjacent to one end of the last wall section in the flow direction of the fibres (36).

Device for gluing dried fibres (4) which are designated for the production of fibreboards, characterized in that below an outlet (6) of a fibre-metering device (3) a feed chute (10) which can be subjected to negative pressure extends from the outlet (6) to a fibre roller (17) which comprises on its surface a plurality of pins (18) and can be rotated in such a manner

• that fibres (14) impinging upon the fibre roller (17) are deflected by means of the pins (18),
• are directed along a chute section (22) which is defined by a partial section of the periphery of the fibre roller (17) and an opposite-lying wall (21) and which extends from an outlet orifice (16) of the feed chute (10) in the rotational direction (19) of the fibre roller (17) and is provided with an outlet orifice (23),
• and said fibres are accelerated to approximately the peripheral speed of the fibre roller (17) by means of the pins (18) and an air flow generated by said pins,
• that the fibres (36) are expelled through the outlet orifice (23) substantially in a horizontal movement direction,
• that disposed adjacent to the outlet orifice (23) of the chute section (22) is an inlet orifice of a pneumatic conveying device (13), into which the fibres (83) are deflected in a downward direction, and
• that in the deflection region spray nozzles (81, 82) are disposed which are provided for gluing the fibres (83) by expelling glue and air.

Device for gluing dried fibres (4) which are designated for the production of fibreboards, characterized in that below an outlet (6) of a fibre-metering device (3) a feed chute (10) which can be subjected to negative pressure extends from the outlet (6) to a fibre roller (17) which comprises on its surface a plurality of pins (18) and can be rotated in such a manner

• that fibres (14) impinging upon the fibre roller (17) are deflected by means of the pins (18),
• are directed along a chute section (22) which is defined by a partial section of the periphery of the fibre roller (17) and an opposite-lying wall (21) and which extends from an outlet orifice (16) of the feed chute (10) in the rotational direction (19) of the fibre roller (17) and is provided with an outlet orifice (23),
• and said fibres are accelerated to approximately the peripheral speed of the fibre roller (17) by means of the pins (18) and an air flow generated by said pins,
• that the fibres (36) are expelled through the outlet orifice (23) substantially in a horizontal movement direction,
• that disposed adjacent to the outlet orifice (23) of the chute section (22) is an inlet orifice of a pneumatic conveying device (13), into which the fibres (83) are deflected in an upward direction, and
• that in the deflection region, spray nozzles (81, 82) are disposed which are provided for gluing the fibres (83) by expelling glue and air.