RU21549U1 - VIBROPRESS FOR FORMING CONCRETE PRODUCTS - Google Patents

Abstract

A vibrating press for molding concrete products containing a loading unit, a bed with columns, on which a matrix, a table, an upper slider with a punch, vibrators, power hydraulic cylinders, a feed hopper, a measuring box, characterized in that it is additionally equipped with a lower slider with mounted on it, are placed vibration support of the table, and on the upper slider is fixed through the elastic element of the punch, the upper and lower slide provided with stops with the possibility of interaction with each other, while the bed is equipped with limiters to move the lower On the slide, the matrix is equipped with vibrators and is mounted on the frame with the help of vibration mounts, and the measuring box is equipped with a grill installed in its lower plane.

Description

OPO1109862

 --- IffllllW

9 a

Vibropress for molding concrete products

The utility model relates to the production of building materials and can be used in the manufacture of products from concrete mixtures.

A device for molding products from concrete mixtures is known, including a vibro-stamp driven by a power cylinder, a vibrating table mounted on shock absorbers, and a matrix mounted on columns with the possibility of reciprocating movement using power cylinders mounted on a fixed crosshead. The columns are mounted on a bed. The matrix is made of composite of the frame and loose liner with stops / 1 /.

Closest to the proposed technical solution is a forming unit for the manufacture of concrete products by vibrocompression, containing a bed on which columns are mounted, a horizontal beam, connecting columns, a power hydraulic cylinder mounted on the beam and connected by a rod. with a punch, a vibrating table with a matrix.

B28B 3/04

mounted on a bed, power cylinders for moving the matrix and a control valve, a pressure line, which is connected to the rod cavity of the power cylinder and an additional valve and a device for removing the back-up of the power cylinder / 2 /.

A disadvantage of the known technical solutions is the thickness of the products during pressing due to

unregulated backfill of the matrix with concrete mixture, a long molding cycle, a long compaction of the concrete mixture due to insufficient full volumetric vibration exposure to the mixture during molding.

The technical result of the proposed technical solution is to improve the quality of the molding of concrete products, reducing the readjustment time when switching to the production of products of a different thickness.

The technical result is achieved in that in a vibrating press, including a bed with columns, on which the matrix, a table, an upper slider with a punch, power hydraulic cylinders, a feed hopper, a measuring box, characterized in that it is additionally equipped with a lower slider with a table mounted on it, a punch is fixed on the upper slider through the elastic element, the upper and lower slider being provided with stops with the possibility of interaction with each other, while the bed is equipped with limiters for moving the lower slider, the matrix with plunged

.

vibrators and is mounted on the bed using vibration mounts, and the measuring box is equipped with a grill installed in its lower plane.

In fig. 1 shows a view of a vibrating press.

The vibrating press for molding concrete products contains a frame 1, with movement limiters 2, columns 3 mounted on it and fixed to the upper slide 4, with stops 5, a punch 6 provided with an elastic element 7 and moved along the columns 3 by a hydraulic cylinder 8, the lower slide 9 s stops 10, table 11, with a pallet 12 located on the slider 9 on the vibration mounts 13 and moved along the columns 3 by the hydraulic cylinder 14. In addition, the vibrating press contains a matrix 15 with a molding liner 16 and vibrators 17 mounted on the frame 1 on the vibration mounts 18, p a similar hopper 19, the measuring box 20 with grating 21, the hydraulic cylinder 22. The mandrel 15 is provided with holes for the free passage of the columns 3 and 5 and the stops 10 ..

Press works as follows.

The concrete mixture flows from the feed hopper 19 into the measuring box 20 with the grill 21. At the same time, the table 11 with the pallet 12 is lifted by the hydraulic cylinder 14 until the slider 9 interacts with the travel limiter 2, while the pallet is pressed against the matrix 15 with a force determined by the compression ratio of the vibration support 12 After filling with concrete, the box 20 is moved to the matrix 15 with a forming insert 16 mounted on the frame 1 independently on the vibration mounts 18.

The volume of the measuring box 20 is not less than 30% more than the volume of molded products.

The grate 21 is freely placed in the lower part of the measuring box 20 and moves with the box 20 along the surface of the matrix 15, preventing the concrete mixture from contacting the surface of the press parts. Then include vibrators 17 mounted on the matrix 15. Concrete passes through the grate 21 and evenly fills the volume of the forming insert 16. The on-time of the vibrators 17 is set depending on the required amount of concrete mixture and its properties. After filling the volume of the forming liner 16 with concrete mixture, the vibrators 117 are turned off and the measuring box 21 is returned to the feed hopper 19. Then, the concrete mixture laid in the forming liner 16 is lowered using the hydraulic cylinder 8, the punch 6 fixed through the elastic element 7 on the upper slider 4 s placed on it stops 7 to the contact of the punch 6 with the surface of the concrete mixture in the forming insert. Then the vibrators 17 are turned on. The concrete mixture is pressed until the stops 5, the slide 4 with the stops 10 are closed, after which the vibrators 16 are turned off. The product is pressed out by jointly lowering the punch 6 and the table 11 with the pallet 12. Then the punch is returned to its original position. Products with a pallet 12 are pushed out of the press, and in its place serves a free pallet. Next, the table 11 with the pallet 12 is raised to contact with the matrix 15 and the cycle of the press is repeated.

The use of the proposed vibrating press for molding concrete products will reduce the time for readjustment when switching to another type of product to improve the quality of products, namely, to increase frost resistance and improve appearance due to the combination of distinctive features set forth in the claims, the rationale of which is as follows.

The autonomous installation of the matrix and the table on the vibration mounts with the placement of vibrators on the matrix creates a closed vibration system with a complex vibration structure as a result of different natural frequencies of the matrix and table vibrations, thereby providing a poly-frequency vibration effect on the mixture in the volume of the liner. This achieves a reduction in compaction time, an increase in the degree of compaction and product quality, increases the productivity of the press by reducing the molding cycle.

The presence of stops prevents the increase of efforts from the punch at the final moment of pressing, and at the same time, the stops provide the joint movement of the table and punch to save products from destruction when pressing out of the matrix. The installation of a lattice in a measuring box that allows the mixture to pass when vibrators are switched on on the matrix ensures uniform loading in the volume of the liner, eliminates the thickness of the product.

The proposed vibrating press is simple and reliable in operation, compact, industrially applicable and can be used when molding products from concrete mixtures without any restrictions and special conditions.

Sources of information accepted in the preparation of application materials.

1.A.S. No. 880738 MKI B 28 V 3/04 publ. Bul. No 42 on 11/15/81.

2.A.s. No. 1590381 MKI B 28 V 1/08 publ. Bul. No 33 on 09/07/90.

Claims (1)

A vibrating press for molding concrete products containing a loading unit, a bed with columns, on which a matrix, a table, an upper slider with a punch, vibrators, power hydraulic cylinders, a feed hopper, a measuring box, characterized in that it is additionally equipped with a lower slide with mounted on it, are placed vibration support of the table, and on the upper slider is fixed through the elastic element of the punch, the upper and lower slide provided with stops with the possibility of interaction with each other, while the bed is equipped with limiters to move the lower On the slide, the matrix is equipped with vibrators and is mounted on the frame with the help of vibration mounts, and the measuring box is equipped with a grill installed in its lower plane.