RU193354U1 - Plywood panel - Google Patents

Abstract

The utility model relates to the woodworking industry, in particular to the production of building products from wood materials. The plywood panel is formed from bottom to top by sequential laying: dry longitudinal sheet of peeled veneer; a transverse sheet of peeled veneer with adhesive applied on both sides; lattice structure of the inner layer of rails from formatted plywood trim; a transverse sheet of peeled veneer with adhesive applied on both sides; dry longitudinal sheet of peeled veneer. The lattice structure of the inner layer of the plywood panel is formed by perpendicular joining of two vertically arranged rows installed on the edge of the rails from the formatted plywood trim. Rectangular rails of the upper row are installed in pairs in the grooves of the shaped rails of the lower row by the indentation method. The grooves in the rails are pre-cut to a depth equal to half the height of the rail. The width of the groove is equal to twice the thickness of the rails from the format cut of plywood. The grooves are formed along the entire length of the rails with the same pitch, determined by the size of the mesh lattice structure. To facilitate the assembly of the lattice structure, the interface of the upper plane of the rails 3 with the vertical planes of their grooves can be made in a circular arc. A lattice made of shaped and rectangular rails, according to calculations, reduces the weight of the lattice structure by 10%. has increased strength characteristics compared to the prototype, since the pairwise placement of the upper battens in the grooves of the lower battens increases the bonding area of the lattice structure with the upper nym veneer layer. At the same time, due to the increase in the total volume of cavities of the lattice structure, the heat and sound insulation indicators of the plywood panel are improved.

Description

The utility model relates to the woodworking industry, in particular to the production of building products from wood materials.

Known laminated wood material made in the form of glued outer and inner layers of veneer, each inner layer is made of parallel-spaced veneer strips and is the basis for the next layer, the strips of which are placed at an angle to the strips of the previous one, starting from the third inner layer , the strip is located relative to the strips of the first inner layer with an offset [Patent RU 2252865. Laminated wood material / V.G. Savenko, A.A. Lukash, No. 2003135692/03; Declared: 12/08/2003. - 4 p.)].

The disadvantage of this laminated wood material is the need to use high-quality veneer in its manufacture, a large consumption of glue, which significantly increases the cost of production and the cost of the finished product.

Known cellular wall panel made of wood materials, containing the outer and inner layers made of parallel placed bars with intervals between them, forming internal cavities filled with insulating material [Utility Model Patent RU 143493. Cellular wall panel made of wood materials / A.A. Lukash, A.S. Shitikova, M.S. Cherenkov. No. 2013103112/13. declared 03/18/2014. - 3s.].

The disadvantage of this material is the need to use wood raw materials in the form of lumber in its manufacture, a large consumption of glue, which significantly increases the cost of production and the cost of the finished product, as well as insufficient bending strength in the transverse direction.

Known plywood panel, including the outer layers of sheets of peeled veneer sheets and an inner layer made of a lattice structure obtained by connecting the racks of format cut plywood, with intervals between them and the formation of internal cavities, the perimeter of which are the planes of the rails in the inner layer mounted on the edge and interconnected in a lattice structure by installing in adjacent grooves (Ugryumov SA, Mitrofanov V.E. Plywood panel. Utility model RU No. 178646, publ. 16. 04. 2018. Bull. No. 11) - prototype.

The disadvantages of the prototype are significant losses of material of the format cut plywood during the formation of grooves in the slats of the lattice structure, the significant weight of the lattice structure and the complexity of its installation.

The technical result of the utility model is to reduce the loss of material of plywood formatted trim by reducing the number of grooves when they are formed in the slats of the lattice structure, reducing the weight of the lattice structure and simplifying its installation while increasing the strength and heat and sound insulation properties of the plywood panel, increasing the volume of the final product .

The technical result is achieved by the fact that in the plywood panel, including the outer layers of sheets of formatted peeled veneer and an inner layer made of a lattice structure obtained by connecting the strips of formatted cut plywood, with the intervals between them, forming internal cavities installed on the edge and connected between a lattice structure by installing in adjacent grooves, according to a utility model, the rails of the lattice structure of the inner layer are stacked vertically in two rows, each of which consists of of the opposite slats of formatted plywood trim, while the shaped rails of the lower row have grooves open at the top with a depth equal to half their height and a width equal to twice the thickness of the plywood, and the rectangular rails of the upper row, the height of which is equal to the depth of the grooves of the lower row rails, are mounted in pairs on the edge in the grooves of the rails of the lower row. The conjugation of the upper plane of the lower rails with the vertical planes of their grooves can be performed along an arc of a circle.

The utility model has the following differences from the prototype:

- slats of the lattice structure of the inner layer are stacked vertically in two rows, each of which consists of opposite slats of formatted plywood trim;

- shaped rails of the lower row have grooves open from above with a depth equal to half their height and a width equal to twice the thickness of plywood;

- rectangular rails of the upper row, the height of which is equal to the depth of the grooves of the rails of the lower row, are mounted in pairs on the edge in the grooves of the rails of the lower row;

- pairing the upper plane of the lower rails with the vertical planes of their grooves can be performed along an arc of a circle.

This will reduce the loss of material in the formatted plywood trim by reducing the number of grooves during their formation in the slats of the lattice structure, reduce the weight of the lattice structure and simplify its installation while increasing the strength and heat and sound insulation properties of the plywood panel, and increase the volume of the final product.

A comparative analysis of the claimed utility model and prototype reveals the distinctive features of the claimed utility model in comparison with the closest analogue, which allows us to conclude that the proposed technical solution meets the criterion of "novelty."

In the scanned patent information fund, no technical solutions with the indicated differences were found, as well as technical solutions with the indicated set of distinctive features.

The proposed technical solution is applicable and will be used to create a new facing and supporting material of the panel type.

The essence of the proposed technical solution is illustrated by the illustration, which shows the structure of the plywood panel.

According to the illustration, the plywood panel is formed from bottom to top by sequential laying: dry longitudinal sheet of peeled veneer 1; a transverse sheet of peeled veneer 2 with adhesive applied on both sides; the lattice structure of the inner layer of rails 3 and 4 from the format cut of plywood; a transverse sheet of peeled veneer 5 with adhesive applied on both sides; dry longitudinal sheet of peeled veneer 6.

The lattice structure of the inner layer is formed by perpendicularly joining two vertically arranged rows of rails installed on the edge from the formatted plywood trim. Rectangular rails 4 of the upper row are installed in pairs in the grooves of the shaped rails 3 of the lower row by the indentation method. The grooves in the rails 3 are pre-cut to a depth equal to half the height of the rails. The width of the groove is equal to twice the thickness of the rails from the format cut of plywood. The grooves are formed along the entire length of the rails with the same pitch, determined by the size of the mesh lattice structure. To facilitate the assembly of the lattice structure, the conjugation of the upper plane of the rails 3 with the vertical planes of their grooves can be made along an arc of a circle.

Opposite plywood trim strips are produced by installing a circular saw on one side of the plywood blade and two circular saws on the other side of the plywood blade. The width of the "left" rails is equal to the total width of the two "right" rails. The need to cut or cut out grooves only on the "right" rails reduces the amount of waste and reduces the total cost of production.

The lattice structure made of shaped and rectangular battens, according to calculations, reduces the weight of the lattice structure by 10%. This is a positive feature of the proposed utility model, and also indicates the possibility of manufacturing a larger number of units of the final product from the same amount of waste format cut plywood compared to the prototype.

The plywood panel with the new lattice structure has increased strength characteristics compared to the prototype, since the pairwise placement of the upper battens in the grooves of the lower battens increases the bonding area of the trellised construction with the upper outer veneer layer. At the same time, due to the increase in the total volume of the cavities of the lattice structure, the heat and sound insulation indicators of the plywood panel are improved, since the air has a priori lower density than wood materials.

Claims (2)

1. Plywood panel, including the outer layers of sheets of peeled veneer sheets and an inner layer made of a lattice structure obtained by connecting the strips of format cut plywood, with the intervals between them, forming internal cavities mounted on the edge and interconnected in the lattice structure by installation in adjacent grooves, characterized in that the slats of the lattice structure of the inner layer are stacked vertically in two rows, each of which consists of opposite slats of formatted plywood trim, This shaped slats of the lower row have open top grooves with depth equal to half their height, and a width equal to twice the thickness of veneer, a rectangular slats of the upper row, the height of which equals the depth of the grooves strips of the lower row, pairwise mounted on the edge strips in the grooves of the lower row. 2. Plywood panel according to claim 1, characterized in that the conjugation of the upper plane of the lower rails with the vertical planes of their grooves can be made along an arc of a circle.

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