RU202154U1 - Glued joinery board - Google Patents

Abstract

The utility model relates to the woodworking industry, in particular to the production of building products from wood materials. The glued building board is formed from bottom to top in layers of densely and parallel laid bars. The arrangement of wood fibers in each layer is orthogonal, and the bars are laid in a layer, orienting the veneer layers in relation to each other. High-quality veneer sheets and flawed veneer sheets alternate in the bar. The glue is applied between the layers of the plate, gluing is carried out by piezo processing. The production of the bars is preliminarily carried out by gluing a package of alternating sheets of high-quality veneer and flawless veneer sheets and cutting such a package into bars by cutting along the fibers on guillotine shears. The design of the plate provides the material with increased bending strength. The use of flaw-like veneer in the design of the slab reduces its cost, and in general, increases the volume of finished products from raw materials entered into production.

Description

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

Known glued slabs with cross-layered layers made of sawn timber (GOST R 56706-2015. Glued lumber plates with cross-layered layers. Specifications. - M .: Standartinform, 2016).

The disadvantage of this material is the need to use wood raw materials in the form of lumber in its manufacture, which significantly increases the cost of production and the cost of finished products.

Known joiner's slabs, consisting of slatted panels, pasted over on both sides with veneer (GOST 13715-78. Joiner's slabs. Specifications. - M .: Gosstandart of Russia).

The disadvantage of this material is the need to use wood raw materials in the form of lumber and high-quality veneer in its manufacture, which increases the cost of production and the cost of finished products.

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, while starting from the third inner layer, the stripes are located relative to the stripes of the first inner layer with an offset (Patent RU 2252865. Laminated wood material / V.G. Savenko, A.A. Lukash, No. 2003135692/03; Appl. 08.12.2003. - 4 p.) - prototype ...

The disadvantages of the prototype are low bending strength, the need to use high-quality veneer in its manufacture, the laboriousness of preparing veneer sheets before assembling into a package, the complexity of forming veneer layers into a package, which significantly increases the cost of production and the cost of finished products.

The technical result of the utility model is a reduction in the consumption of high-quality veneer due to the involvement of flawed veneer in the production, simplification of the installation of the slab with a simultaneous increase in its strength properties, ease of assembly of slab layers, an increase in the volume of final products and a decrease in its cost.

The technical result is achieved by the fact that in a glued blockboard, including orthogonally glued layers, consisting of wooden blanks, wooden blanks of layers are made in the form of bars glued from peeled veneer plates with a parallel arrangement of wood fibers in the volume of a bar, while in the bar there are solid veneer plates alternate with flaw-like veneer plates, and the bars are placed in a layer with veneer faces to each other.

The utility model has the following differences from the prototype:

- wooden blanks of layers are made in the form of sticks glued from peeled veneer plates with a parallel arrangement of wood fibers in the volume of the bar;

- in a bar, solid veneer plates alternate with flawed veneer plates;

- the bars are placed in a layer with veneer faces to each other.

This makes it possible to reduce the consumption of high-quality veneer due to the involvement of flawed veneer in the production, simplify the installation of the slab while increasing its strength properties in bending, simplify the assembly of slab layers, increase the volume of the final product and reduce its cost.

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

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

The proposed technical solution is applicable and will be used to create a new facing and load-bearing slab material

The essence of the proposed technical solution is illustrated by an illustration showing the structure of a glued blockboard.

According to the illustration, the glued building board is formed from bottom to top in layers 1 of tightly and parallel laid bars 2. The arrangement of wood fibers in each layer is orthogonal, and the bars 2 are laid in a layer, orienting the veneer faces relative to each other. In a bar, high-quality sheets of 3 veneers and sheets of 4 veneer-flaws, glued together, alternate. Glue is applied between the layers of the board, gluing is carried out by piezo treatment.

The production of the bars 2 is preliminarily carried out by gluing a package of alternating sheets of high-quality veneer and flaw-like veneer sheets and cutting such a package into bars by cutting along the fibers on guillotine shears.

The bars installed in the slab layer "on the edge" provide the material with increased, relative to the prototype, bending strength.

The use of flaw-like veneer in the design of the slab reduces its cost, and in general, increases the volume of finished products from the raw materials entered into production.

The quality of the glued building board when using flaw veneer remains quite high, since “with a low probability of coincidence of holes from fallen knots and other defects of adjacent sheets in a package, they can appear on the plate only in the form of narrow slots or strips with a width of no more than the veneer thickness. During cold pre-pressing of the pack and during gluing, the cracks are partially tightened due to deformation of the veneer. This allows you to use lumpy veneer with raw edges, collecting it end-to-end or with an overlap ”[Tsymberov LK, Grigoriev OP. Chipboard and veneer parquet boards (overview). M., 1980. VNIPIElesprom.]

Note that when peeling veneer, up to 20% of flaw-like veneer is formed, and during jointing and edge gluing of strips of high-quality veneer into a sheet (which is a laborious and rather complicated operation necessary for the implementation of the technology for the production of prototype products), the waste is another 15% (Tokareva O .F. Technology of glued materials. Veneer production. Course of lectures [Text]. Textbook / OF Tokarev. - Tomsk: Publishing house of the Tomsk State Architectural and Construction University, 2015. - 247 p.)

Claims (1)

Glued blockboard, including orthogonally glued layers consisting of wooden blanks, characterized in that the wooden blanks of the layers are made in the form of bars glued from peeled veneer plates with a parallel arrangement of wood fibers in the volume of the bar, while in the bar solid veneer plates alternate with the plates veneer flaws, and the bars are placed in a layer with the veneer faces to each other.

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