SU116658A1 - Press for forming large ceramic hollow wall blocks - Google Patents

Description

Known presses for molding large ceramic wall blocks, the forming body of which is made of four. Tented conveyors, forming in their junction in assembled form a four-sided box (shape) corresponding to the cross-section of the moldable block. It is also known to use cantilevered inserts to form voids.

However, during the molding of hollow blocks in such forms, the pressing pressure is not evenly distributed over the entire surface of the block, as a result of which the blocks molded in this way: the blocks do not have the necessary qualities.

The described press is deprived of this disadvantage. This is achieved by the fact that the inserts forming the voids in the block are made of paired endless conveyor belts synchronously moving in the same direction with the movement of the main tapes forming the shape. Due to the use of such liners in the formation of the block, the pressing mass is internally pressed, ensuring uniform pressure distribution over the entire surface of the block.

The drawing shows a general view of the press.

The press consists of a frame 1, in which four belt conveyors 2, 3, 4 and 5 are mounted, forming a tetrahedral box (form) with moving walls, which corresponds to the cross-section of the molded block, when assembled.

To form the njCTor, inserts 6 are inserted into the mold cavity, which are made of paired infinite quadrilateral transport / porter tapes synchronously moving in the same direction with the movement of the main tapes forming the shape.

Inserts act as propulsion cores and are designed in conjunction with external conveyors to pre-press the product from the inside and form voids in the blocks.

Co. 116658-2 -

Due to the cantilever arrangement in the mold cavity of the insert liners, they do not resist the movement of the formable mass (which occurs when using known fixed core-cores to form voids), but, on the contrary, contribute to the mass movement and create this movement together with external conveyors.

Thanks to such a press device, it uses complex and simultaneous use of: the gravitational principle of pushing the forming mass from top to bottom on the cores, due to the vertical position of the press using its own weight; vibration (shaking) of the clay mass in the bunker 7, due to internal action vibrators S mounted on all four sides of the bunker, which facilitates the flow and creep of the mass onto the conveyor belts and its compaction.

The required press pressure of the blocks is formed by the appropriate length of the press bands, the constriction of the outlet opening and the constriction in the mouthpiece.

The press outlet opening was narrowed by converging conveyor belts of two external conveyors 2 and 3 and inserts conveyors 6. To do this, in these conveyors the front drums (to the exit outlet of the press) are made of a larger diameter than the rear ones.

The press is driven by an electric motor 9 through a gearbox 10 and a system of gear bevel gears 11. In this case, all conveyor belts are driven simultaneously and synchronously with the same linear speed.

The pressed mass is fed to the conveyor belts through the receiving bin 7 monolithically and evenly. Large ceramic hollow wall blocks coming out of the forming part of the press are loaded onto the table 12. The table and the carriage with the moldable block are balanced by weights 13 by means of cables 14 thrown over the pulleys with the belt brakes 15. The table with the carriage located on it can freely mix on the right 16 up and down. By the beginning of the molding, the table with the trolley rises up under the action of the load and the extrusion of the beam begins. Under pressure, his cart with the table is gradually and evenly lowered down. Coming down to the spring stop 17, the press is turned off by a tape brake or electrical block contacts 18.

The finished large ceramic hollow wall block is cut off with a radiation knife 19. Then the cart from the table with the block on it is rolled away. An empty cart is rolled into the table and the cycle of the block form is repeated.

Subject invention

A press for forming large ceramic hollow wall blocks, the forming body of which is made of four belt conveyors forming the assembled four-sided box (shape) corresponding to the cross section of the block being molded and using a cantilever insert into the mold to form the voids characterized by that, in order to ensure, during the molding of the blocks, an internal prepressing-and and uniform pressure distribution over their entire surface, the inserts are made of paired infinite trans orternyh belts moving synchronously in the same direction as the movement of the major bands forming shape.