SU1209453A1 - Device for moulding articles from concrete mixes - Google Patents

Description

The invention relates to devices for the manufacture of building products from rigid concrete mixtures.

The purpose of the invention is to improve the quality of compaction and regulate the molding process.

FIG. 1 shows the device, a general view; in fig. 2 - the same, cross section; in fig. 3 shows the node I in FIG. 2; in fig. 4 — separation diaphragm with vertical movement mechanism, in axonometric view.

The device contains a spatial portal 1, in which roller guides 2 there is a horizontally-movable drive frame 3 with a hopper 4 fixed on it with outlet openings 5, between which rolling rollers 6 with a forced-turn mechanism 7 are placed. The movable frame 3 of the crank mechanism is connected with the drive 8. In front of the rolling rollers 6, a supporting frame 9 with a longitudinal groove is placed rigidly attached to the portal 1, in which there is a vertically movable driving diaphragm 10 with a pressure sensor 11 in the form of a mesdosa with a hydraulic converter of the type M 70/11.

The vertical movement of the diaphragm 10 is carried out by means of the gear guides 12 and gear 13, which are welded to it, from the drive 14. The concrete mixture is loaded into the hopper with a tape feeder 15. The mold 16 is moved along the roll table 17 by the drive 18.

The device works as follows.

In the molding process, the mold 16 is moved along the roll table 17. The concrete mixture, which continuously flows from the hopper 4 to the mold 16, is compacted by

lay-in indented rolling rollers 6 during their reciprocating movement. The separating diaphragm 10, the dimensions of which are determined by the dimensions of the molded article, is lowered to its lowest position by the time of the start of the molding. Shutting off the cross section of the form, it prevents the concrete mixture from moving from under the rolling rollers 6 to the side of the unfilled part of the form, thereby creating a kind of closed compacted volume. Due to this, additional pressure occurs in the compacted massif, which increases the degree of concrete compaction in the product.

Upon completion of the product sealing process in this form, the diaphragm 10 with the aid of the existing actuator 14 rises to the extreme upper position and then descends to the next form. The raising and lowering operations of the separation diaphragm 10 are automated by using a system of serial limit switches 19 and 20 that regulate the moments of the beginning of raising and lowering, as well as the limits of the diaphragm moving in height, determined by the thickness of the molded product.

The presence of a sensor 11 mounted in the separation diaphragm 10 allows the degree of compaction of the concrete mix under the working body to be measured by the measured pressure and the technological process is controlled by the necessary change in the mold displacement speed and the flow rate of the concrete mix from the belt feeder 15 to the distribution bunker 4.

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Claims (2)

1. DEVICE FOR FORM-. PRODUCTION FROM CONCRETE MIXTURES, containing a portal, in the roller guides of which a horizontally movable drive frame is mounted with a hopper fixed to it with outlet openings, between which rolling rollers are placed, characterized in that, in order to improve the quality of the seal, it is equipped with a front mounted on the portal with rolling rollers, a supporting frame with a longitudinal groove and located in the last vertically movable drive separation diaphragm. 2. The device according to π. 1, characterized in that, in order to regulate the molding process, the vertically movable separation diaphragm is equipped with a pressure sensor installed in its lower part. SU, 1209453 <rig. 1>