RU209366U1 - Metal mold for the manufacture of concrete products with a figured profile - Google Patents

Abstract

The utility model relates to molds for the manufacture of stair assemblies, specifically to a metal mold for the manufacture of concrete products with an angular shaped profile. The metal mold contains a base 1 and a hinged cover 2, made with an L-shaped profile. The lower ends of the base 1 and the hinged lid 2 are hinged to each other and with the possibility of formation between their adjacent surfaces of the molding grooves 3 of figured shape. The upper free ends of the base 1 and the hinged cover 2 are equipped with locks 5 and an inlet 6 for pouring concrete. The utility model makes it possible to improve the quality of concrete products with an angular curly profile. 6 w.p. f-ly, 2 ill.

Description

Technical field

The utility model relates to molds for the manufacture of stair assemblies, specifically to a metal mold for the manufacture of concrete products with a figured profile. The metal mold is recommended for high-speed production of steps and cladding of stairs with an angular curly profile.

State of the art

Known metal mold (RU 2313643) for the manufacture of concrete products with an angular shaped profile, containing collapsible along the axis of the metal mold with an internal cavity corresponding to the size and shape of the facing coverings of the stairs. From the end sides, the form is equipped with removable plugs.

To form concrete products with a figured profile, the metal mold is installed in a vertical position on the lower end cap. Next, from the upper end side of the metal mold, the upper end cap is removed and the mold is poured with concrete. After pouring the metal mold with concrete, an upper end cap is installed on it. Next, the metal mold is transferred to a horizontal position and installed on a vibrating platform in the V-position for vibrocompression of the poured concrete.

The disadvantage of the known metal mold (RU 2313643) is the reduced productivity of the production of corner concrete profiles, associated with the increased laboriousness of tilting a massive metal mold filled with concrete mixture. Another disadvantage of this metal mold is the impossibility of adding a concrete mixture to the metal mold during its vibrocompression, which leads to the difficulty of producing corner concrete products of the same size.

It is desirable to create a metal mold that does not require its tilting in the production of steps and facing coverings from concrete with an angular figured profile.

Such metal molds have not been identified in the prior art.

Formulation of the problem

The objective of the utility model is to create a metal mold that does not require its tilting in the production of steps and facing coatings from concrete with an angular figured profile.

The technical result achieved by solving this problem is to improve the quality of concrete products with a figured profile.

The essence of the utility model

The solution of the problem and the achievement of the claimed technical result is ensured by the fact that the metal mold for the manufacture of concrete products with a figured profile contains a base and a hinged cover made with an L-shaped profile, connected to each other pivotally and with the possibility of forming between their adjacent surfaces of the molding grooves of a figured shape, moreover, the upper free ends of the base and the hinged cover are equipped with locks and an inlet for pouring the concrete mixture.

The implementation of the base and the hinged cover with an L-shaped profile, the free ends of which are pivotally connected to each other, and the upper ones are equipped with locks and an inlet for pouring the concrete mix, allows:

install the metal mold on the vibrating platform in one horizontal position without its vertical-horizontal and angular tilting;

to produce the release of the finished products from the metal mold by successively turning the hinged cover, and then the base around the common hinge.

The indicated technical advantages of the proposed metal mold make it possible to improve the quality of the production of concrete products, including steps and facing coverings with an angular figured profile for concrete and reinforced concrete stairs.

The essence of the utility model is illustrated by drawings and photographs shown in Fig. 1 and 2.

In FIG. 1 is a drawing illustrating the construction of a metal mold in the closed position. In FIG. 2A - a photo of a block of facing figured coatings for concrete and reinforced concrete stairs, produced on a prototype metal mold. In FIG. 2B - photo of the facing covering installed on the steps of a concrete staircase.

In FIG. 1 and 2 are marked:

1 - rotary base of the metal mold;

2 - hinged cover of the metal mold;

3 - groove (gap) between adjacent surfaces of base 1 and hinged cover 2;

4 - swivel;

5 - lock;

6 - mouth;

7 - polyurethane plug (concrete mixture side limiter).

Disclosure of utility model design

According to FIG. 1 and 2, a metal mold for the manufacture of concrete products with a figured profile contains a base 1 and a hinged lid 2, made with an L-shaped profile. The lower ends of the base 1 and the hinged cover 2 are hinged to each other and with the possibility of formation between their adjacent surfaces of the molding grooves 3 of figured shape. The upper free ends of the base 1 and the hinged cover 2 are equipped with locks 5 and an inlet 6 for pouring concrete.

Base 1 and hinged cover 2 are 0.6-3 m long, 0.1-0.7 m wide, 0.2-0.6 m high and 2-20 mm thick. They are made of solid metal or welded from individual metal plates with a concave-convex profile.

Swivel joints 4 of the base 1 and the hinged cover 2 are made in the form of door hinges, piano hinges or cylindrical hinges with the possibility of forming between the adjacent surfaces of the base 1 and the hinged cover 2 molding grooves (gaps) 3 with a figured profile. The molding grooves 3 are made with a gap size of 0.5-10 cm. The locks 5 are made in the form of lever, pin or bolt clamps installed on the side and/or upper sides of the free ends of the base 1 and the hinged cover 2. The mouth 6 for pouring the concrete mix is made in the form of internal longitudinal sections of the upper free ends of adjacent sides of the profiles or in the form of bends of these ends in opposite directions.

For the production of corner concrete profiles of various lengths, the metal mold is equipped with a set of reusable polyurethane side curly plugs 7 for installation transversely in the grooves 3 of the metal mold with the possibility of clamping them between adjacent planes of the base 1 and the hinged cover 2 and at distances from each other corresponding to the length of the curly concrete product being produced. For a strong clamping of plugs 5 between adjacent surfaces of profiles 1 and 2 and vertically to their surface, plugs 5 are made with a thickness of at least 0.5-10 cm and dimensions that exceed the height of the cross-section of the grooves 3 of the metal mold by 0.5-2 cm. The latter is necessary for so that the plug protrudes slightly above the level of the mouth 6, preventing the mixture from spilling on the sides.

The above range of sizes of the base 1, hinged cover 2 and grooves 3 is selected from the condition of the possibility of vibroforming thin-walled concrete products of figured shape of the required size range and required strength. For vibroforming thin-walled concrete products with a figured profile with a strength of 10-14 MPa for bending and 50-150 MPa for compression, heavy concrete with a specific density of 2500-2900 kg/m ³ is required. The increased density of heavy concrete, the loading of the concrete mixture into the metal form directly on the vibrating platform and without tilting the latter, as well as the manual unloading and transportation of finished products determine the upper allowable limits for the dimensions of the base 1, the hinged cover 2.

When using metal molds with dimensions less than the lower permissible limits, products of figured shape in section of insufficient thickness and/or length are obtained. Such a decrease leads to insufficient strength of the product under bending loads. When using metal molds with dimensions greater than the upper allowable limits, the weight of the metal mold sharply increases. An increase in the weight of the metal mold leads to an increased load on the vibrating platform and increases its inertia. In turn, an increase in the inertia of the metal mold leads to a decrease in the density of concrete mixture molding and an increase in energy consumption for vibrocompression of concrete products with an angular figured profile of the required strength.

The lower limits of the dimensions of the base 1 and the hinged cover 2 of the metal mold are selected from the condition of reducing the forming properties of the metal mold due to possible bends and 10% departure of its molding grooves 3 beyond the allowable limits of 0.5-10 cm.

The lower boundary of the molding grooves does not allow to obtain concrete products with an angular curly profile of the required strength under bending loads. The upper limit of the molding slots makes the products very heavy and it is more difficult to handle, transport and assemble such products.

The selected range of dimensions of the base 1, hinged cover 2 and grooves 3 provide a rational consumption of materials and weight of the metal mold, as well as the strength characteristics of the metal mold under bending loads, which are necessary to prevent the formation of microcracks on freshly formed concrete products.

In general, these technical advantages of the proposed design of the metal mold make it possible to produce concrete products with a figured profile of the same standard sizes and improved quality.

This utility model is not limited to the above example of its implementation. Within the framework of this design, other options for the execution of the metal mold are also possible, which do not go beyond the scope of the original application materials.

In particular, to ensure a uniform gap between adjacent sides of the profile, as well as to prevent leakage of the concrete mix during the formation of products with an angular profile between adjacent sides of the profiles, gap limiters can be welded in the form of metal plates or corners with the height of their ribs corresponding to the required gap between adjacent profile sides. To apply an anti-slip ornament to the front side of concrete products, an elastic substrate with an appropriate ornament can be placed inside the metal mold on base 1.

Mold work

Metal form for the manufacture of corner concrete profiles works as follows.

In the initial position, the metal mold is installed on the vibrating platform and is open. With an open metal mold, an elastic substrate is laid on base 1 (not shown in the figures) with an appropriate ornament and anti-skid relief. After laying the substrate, plugs 7 are installed on it. Plugs 7 are installed at a distance from each other by a value corresponding to the required length of the corner concrete product, for example, 2 m. Next, turn the hinged cover 2 and clamp the plugs 7 between the profile surface 2 and the elastic substrate. After clamping the plugs 7, the upper free ends of the base 1 and the hinged cover 2 are fixed until the corresponding gap 3 is formed between the profiles 1 and 2 and closed with locks 5. Then the vibration platform is turned on and through the mouth 6 into the specified gap 3, limited from the sides by the plugs 7, the concrete solution is poured . In the process of vibrocompression of the poured concrete, its level is periodically controlled through the open mouth 6 in the metal mold, and as its level decreases, the concrete mixture is topped up. After the specified 2-20 minutes of time, the vibration of the vibrating platform is automatically turned off and the metal mold is held in the closed position until the concrete product hardens for 3-6 hours or is transported to the storage warehouse. When the concrete product is ready, the locks 5 are opened. The cover 2 is turned on the hinge, thereby revealing the form. Then the base 1 is rotated on the specified hinge along with the concrete product towards the profile 2, and the finished product falls out from the elastic liner laid earlier on the bases 1 onto the inner corner surface of the cover 2. Then the finished concrete product is easily removed from the cover 2 and placed in the appropriate stacks. (Fig. 2) for drying and final curing.

Industrial Applicability

The utility model has been developed at the prototype level. Tests of a prototype metal mold for the manufacture of figured concrete profiles such as facing elements of stairs with dimensions (length 1200, 1600 mm, thickness 20 mm, 25 mm, width 40 mm, 60 mm, articulation angle 84 degrees) confirmed the possibility of improving the quality of production of concrete products with figured profile and the same size. At the same time, deviations in the dimensions of concrete products in the series did not exceed 2%.

Claims (7)

1. A metal mold for the manufacture of concrete products with a figured profile, characterized in that it contains a base and a hinged lid, made with an L-shaped profile, hinged to each other and with the possibility of forming between their adjacent surfaces of the molding grooves of a figured shape, and the upper free ends of the base and a hinged lid are equipped with locks and an inlet for pouring concrete. 2. The metal mold according to claim 1, characterized in that the base and the hinged lid are made of all-metal or welded from separate metal plates with a concave-convex profile. 3. Metal mold according to claim 2, characterized in that the base and the hinged lid are 0.6-3 m long, 0.1-0.7 m wide, 0.2-0.6 m high and 2-20 mm thick . 4. The metal mold according to claim 1, characterized in that the molding grooves between the adjacent surfaces of the base and the hinged lid are made with dimensions of 0.5-10 cm. 5. The metal mold according to claim 1, characterized in that the hinge joints are made in the form of door hinges, piano hinges or cylindrical hinges. 6. The metal mold according to claim 1, characterized in that the locks are made in the form of lever, pin or bolt clamps installed on the sides and / or on the upper side of the base. 7. The metal mold according to claim 1, characterized in that the mouth for pouring the concrete mixture is made in the form of internal longitudinal sections of the upper free ends of the adjacent sides of the profile plates or in the form of bends of the upper ends of these plates in opposite directions.

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