SU745684A1 - Apparatus for moulding articles from loose materials - Google Patents

Description

(54) DEVICE FOR FORMING PRODUCTS FROM BULK MATERIALS

The invention relates to the field of pressing of various plate products from bulk materials and can be used in all areas of the national economy for the pressing of products from bulk materials and powders.

A multi-roll press is known for continuous pressing, for example, concrete and reinforced concrete slab products, consisting of a number of identical rolls that move reciprocally above a horizontal, open, top 1 form.

A rotary-roller press is also known for pressing concrete and reinforced concrete pipes, including a shape and a roller head in the form of a cylindrical overturned cup, on the bottom of which circumferentially rollers are mounted on a number of vertical axes. The glass is fixed on the end of the shaft rotating around a vertical axis, which also has the ability to move vertically along the axis of the rollers located on the glass concentrically relative to the axis of the shaft.

The axis of the rollers attached console to the bottom of the glass. Rollers mounted on axles

With the possibility of free rotation around the axes 2.

The known rotary-roller press is not suitable for use in the manufacture of plate products in horizontal 5 forms with one open surface.

In addition, the thickness of the walls of the products (tubes) is limited by this roller press and is dependent on the length and diameter of the roller, and with increasing length of the rollers the power increases dramatically.

10 spent on pressing.

The aim of the invention is the expansion of technological capabilities that provide continuous pressing of plate products with one open surface, 5 a significant increase in the thickness of the product being worked out, an increase in press productivity compared to presses for the same purpose.

This goal is achieved by the fact that the device for molding articles from bulk materials, including the rotor, the mold and the device for feeding bulk materials, is provided with a casing for the bulk material that is open in the direction of the form being moved relative to the rotor, in which

at least one rotor of the drum type, while the working surface of the rotor can be made in the form of rollers freely rotating around its axis but located around the circumference of the rotor drum.

FIG. 1 shows the proposed device, front view (casing-bunker conventionally not shown); in fig. 2 shows section A-A in FIG. one.

The device for feeding materials contains a frame 1 with support bearings 2, in which the ends of horizontal shafts 3 of rotors 3 are mounted. On the shaft of each rotor there are mounted crossings-disks 5 in which the ends of axes 6 of horizontal cylindrical rollers 7 are fixed, freely turning around these axes. The rotors 4 are enclosed in a casing 8 mounted on a fixed frame 1 and having side and end walls.

The rotors 4 with the rollers 7 are set above the horizontal mold 9 at such a distance that the rollers 7, when the rotor rotates, touch one of their cylindrical surfaces with the upper surface of the molded product (otherwise, the upper open surface of the mold) 10. Both rotors 4 are rotated, for example, from actuators 11 mounted on frame 12 through couplings 13. Form 9 moves under the rotors 4 with its drive, for example a chain pusher 14.

The molding mixture is fed into the casing 8 by any known feeding device, for example a belt feeder 15.

The device works as follows.

The mold 9 at the start of the process is installed below the rotors 4, as shown in FIG. 3 so that the rotors 4 are over the edge of the form.

The rotors are driven into rotation, for example towards each other, as indicated by arrows A and B in FIG. 2, the molding mixture is fed continuously or periodically into the shell-bin, between the rotors, the belt feeder 15, but so that under the rollers above their shape, the surface of the mold is a layer of molding sand all over the width of the shell 8, equal to the width of the mold.

At first, the molding mixture through the lower opening 16 of the casing freely spills out into the edge of the mold, forming a hill 17 of the mixture 17 with the angle of the natural angle to the unfilled portion of the mold 9 along the entire width of the mold under the rotors.

As soon as the slope of the hill rises above the level of the upper surface 10 of the mold 9, the rollers 7 will begin to roll onto this mixture, lowering it under itself into the mold. The mixture, pressed by the rollers below, moves

745684

predominantly downwards and a gradual consolidation of the mixture under the rollers to the bottom 18 of mold 9 occurs, and the compaction zone gradually (as the mixture enters the rollers) spreads from top to bottom.

bottom of the form due to the continuous pressing by the rollers of the mixture continuously flowing under them in a limited amount of previously loose mixture enclosed in the space between the bottom of the form, its face 19 and part of the longitudinal sides

0 and rotors 4.

After the container is sealed under the rotors to “failure,” which is characterized by active extrusion of the mixture layer along the entire width of the mold towards the unfilled part and raising the level of the mixture along the entire length of the right rotor (before it, as shown in Fig. 2) above the level the upper plane of the molded article (above the form level); the actuator moves the mold along the arrow B, for example the chain pusher 14,

And the speed of this movement of the form. support visually or automatically within such limits that the dimensions of the roll 17, extruded from under the rotor at the beginning of the process (see Fig. 2) with a fixed form 9 are equal to or larger than the original size, i.e. the speed of movement of the form under the rotors arrow B depends on the rate of extrusion of the mixture from under the rotors and during the process must be maintained equal to or less than the speed

the extrusion observed in the most slowly extruded portion of the layer () along the width of the form.

Claims (2)

1. An apparatus for forming articles from bulk materials, including a rotor, a shape and a device for feeding loose materials, characterized in that, with In order to expand technological capabilities, the device is equipped with a casing for bulk material, open in the direction of a form that is movable relative to the rotor, in which at least one drum-type rotor is placed. 2. The device according to claim 1, characterized in that the rotor is made in the form of rollers freely rotated around its axis, located around the circumference of the drum. Information sources, taken into account in the examination 1. Brochure VNIIEMS. Referential information. Ser. Precast concrete industry, vol. II, M., 1971, p. 4-7, fig. I. 2. USSR author's certificate number 294741, cl. B 23 B 21/24, 1968. / J 2 }. eleven M I I II - ...-: o: -: ci .- ..;, ... O .. p.- .. .o- /four H fe. l-O; .. V - °.-O-.