Method and apparatus for reducing lateral powder waste of a powder bed advancing on a moving conveyor surface
A technology of mobile conveying and powder layer, applied in the direction of supply device, press machine, pressing roller, etc., can solve the problem of restoring powder and so on
Active Publication Date: 2018-06-05
SACMI COOP MECCANICI IMOLA SOC COOP A R L
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Problems solved by technology
[0012] The devices and methods shown are all effective for the most suitable thickness of the powder layer, i.e. for layer thicknesses designed to produce slabs up to 6-8 mm; for larger layer thicknesses there are known devices and methods Has some drawbacks that stem from the excess powder to be reconstituted and recycled
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[0031] In the illustrated embodiment, the cross-section of the layer ( figure 2 ) comprises a central region 11 of constant thickness, through which lateral regions of triangular section, or descending edges 12 , are formed on both sides, the width L of which triangular region is a function of the powder friction angle.
[0032] If a lateral area 2 is divided by an ideal plane 3 perpendicular to the conveying plane 1 and located at an intermediate point of the width L of each lateral area or edge 12 of the belt 2, each area 12 is subdivided such that two Sections 121 and 122 (see figure 2 ) have roughly the same cross-section.
[0033] The lateral edge or region 12 may not have an exact triangular cross-section, since its cross-section depends not only on the angle of powder friction, but also on unpredictable factors.
[0034] In any case, the lateral edge or region can be divided by a vertical plane into two parts of substantially the same cross-section.
[0035] Look a...
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Method for reducing transverse powder waste of a layer of powder material advancing on the surface of a moving conveyor, the belt of powder material having a transverse section of reduced thickness also reduced according to the friction angle of the powder exhibiting the shape of an isosceles trapezoid section, and two containment walls for the powder layer are provided, perpendicular to the sliding surface, and parallel to its advancing direction, the method comprises the following actions: placing the containment walls in each powder having a reduced thickness The inside of the belt, so as to divide each belt into two parts of approximately equal cross-section, and to convey the powder into the space provided between the walls in the vicinity of the walls during the advancement of said belts. The device for reducing the lateral waste of powder consists of two lateral containment walls 6 for powder, which have adjustable dimensions, and for conveying powder outside the walls during the advancement of the belt to the nearby, in the space between the walls (5, 7).
Description
technical field [0001] The present invention relates to a device and a method for processing strips or layers of powdered material, mainly for forming tiles or slabs. In particular, the present invention relates to a device and a method as described in document WO 2013050845, which relates to a device for depositing powder on a belt, and to a device for compacting the powder layer formed on the belt. Background technique [0002] The device includes, inter alia, a sliding conveyor surface capable of supporting and advancing a layer of powder material in belt form; and a compacting station capable of compacting the layer of powder material while advancing on the conveyor surface. Tighten the powder material layer. [0003] The cross-section of the powder belt or layer placed on the belt may be an isosceles trapezoid whose sides are inclined at an angle depending on the powder friction angle. [0004] In this way, two descending edges or lateral regions are defined in the st...
Claims
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IPC IPC(8): B28B13/02B30B5/06
CPCB28B3/123B28B13/0295
Inventor 西尔瓦诺·瓦利艾伦·巴比尼
Owner SACMI COOP MECCANICI IMOLA SOC COOP A R L