Method and plant for forming ceramic slabs or tiles
A technology of ceramic tiles and equipment, applied in the direction of ceramic molding machines, presses, rollers, etc., can solve the problems of broken, unable to ensure the mechanical properties of condensed objects, cracks, etc.
Active Publication Date: 2010-05-26
SACMI COOP MECCANICI IMOLA S C R L
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Problems solved by technology
[0004] The height adjustment of the compacting device ensures the flatness of the agglomerates, and a constant compaction ratio in the transverse direction, but does not ensure the mechanical properties of the agglomerated bodies, which are determined by the action of the compacting device on the powder Maximum Pressure Guaranteed
[0005] In this regard, for aesthetic reasons or due to loading defects, the thickness of the powder ribbon deposited on the flexible belt may vary in the transverse and longitudinal directions, or the particle size distribution of the powder in the transverse direction or other physical Be inconsistent and therefore compacted to varying degrees in the transverse direction
[0006] All of this means that the mechanical properties of the compacted object may vary both laterally and longitudinally until reaching values where the mechanical cohesion of the object is no longer ensured, which in turn leads to cracking and crumbling, rendering it unusable
Method used
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Embodiment Construction
[0030] Said figures show a plant 1 comprising an underside motorized conveyor belt 2 on which a continuous powder belt 100 is deposited by means of conventional means of a known type and is therefore not shown again.
[0031] The conveyor belt passes through a compacting station 3, the purpose of which is to compact the powder in the powder belt 100 in order to obtain an object formed of agglomerated material substantially in the form of a parallelepiped.
[0032] Depending on the degree of compaction to which the powder located on the conveyor belt is subjected, said objects can form finished bricks, or a pre-compacted slab which must subsequently be subjected to a secondary compaction.
[0033] The object can be decorated as required and thus divided into blanks of appropriate size according to the desired finished product, size. The pressing station 3 comprises a first powder compaction zone 30 downstream of which is a second zone 31 in which the objects formed are decompre...
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Method for forming ceramic tiles comprising the following operative steps: depositing on a conveyor belt a continuous layer of powders, means being associated with the belt for their lateral retention; pressing said powders to obtain a coherent article of compacted powders by advancing said belt through a pressing station of continuous type; controlling the force exerted on the powders during pressing. The method is implemented by a plant for forming ceramic tiles comprising a conveyor belt on which a continuous strip of material in powder form is created and which is arranged to advance saidstrip through a continuous pressing station provided with means for controlling the force exerted on said powders and enabling the powder strip on said belt to be compacted to obtain a coherent article of compacted powders, means being associated with said pressing station to laterally retain the material on said belt.
Description
technical field [0001] The present invention relates generally to a method for manufacturing ceramic plates or ceramic tiles, and in particular to a method for shaping said ceramic plates and associated apparatus for carrying out the method. Background technique [0002] Known methods of forming ceramic tiles involve depositing a continuous layer of powder on a flexible belt with side walls cooperating with said flexible belt to retain said powder laterally. The flexible belt on which the powder layer is formed is then advanced through a continuous type pressing station which compacts the powder located on the flexible belt to obtain a compacted powder A coherent article formed. At the end of the compaction operation, the agglomerated body is divided into blanks and possibly subjected to a secondary compaction. This method is described in detail in the patent application No. RE2002A000035 of the same applicant, in order to obtain more complete information, it is necessary ...
Claims
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IPC IPC(8): B28B5/04B28B3/12
CPCB28B3/123B30B5/06
Inventor P·里沃拉A·科奎奥
Owner SACMI COOP MECCANICI IMOLA S C R L