RU2462349C1 - Method of making decorative lumber from logs - Google Patents

Abstract

FIELD: process engineering. ^ SUBSTANCE: two parallel saw cuts are made at equal distance from central axis of round lumber 1 to produce two-edges cant 2 and two segments 3. The latter are cut along two parallel planes to make three-edged variable cross-section lumber and strips. Finished products are quality- and geometry-graded. Two-edged cant is cut in two planes extending at equal distance from cant curvilinear generating surfaces at top and but ends to produce three-edged decorative lumber. Parallel surfaces of said lumber feature equal height. Three-edged cant is cut in plane extending at equal distance from cant curvilinear generating surfaces at top and but ends to produce three-edged decorative lumber. Said curved generating surface is barked, machined and processed to make fire-and-bio-protection coating. Thrust ledges and location slots are made on opposite parallel surfaces. Produced decorative lumber articles are bonded to base by face opposite to curvilinear generating surface. Warmth-keeping jacket is laid between butt parallel surfaces. ^ EFFECT: higher quality and increased yield. ^ 3 cl, 12 dwg

Description

The invention relates to the forest industry and can be used in the production of building and decorative materials from wood used in housing construction.

Known beam-breakup method of cutting logs and production of lumber, when using which on the first pass receive a two-edged timber and unedged lumber, and on the second pass from a two-edged timber receive edged lumber [1].

The disadvantages of this method of cutting are a high percentage of waste, a narrow range and reduced quality of the resulting output due to the non-use of peripheral zones of sawing logs.

A known method for the production of decorative lumber from fine logs, the essence of which is to cylinder the log, followed by milling a groove of one radius equal to the radius of the logs along its entire length. Then the log is cut to obtain two segments and one disk with a decorative look [2].

The disadvantages of the method are the reduced quality and useful volume of the resulting product due to separation during cylindering into the waste of the most valuable - high-quality peripheral parts of the log.

There is also a method of cutting sawn logs and lumber, including a breakup method of cutting and obtaining edged lumber of a trapezoidal profile in cross section by processing one of the surfaces along the generatrix of timber in order to achieve maximum useful yield; sorting the resulting lumber according to geometric and quality characteristics and the formation of the final product by attaching lumber to the boards [3].

This method is adopted as a prototype. The disadvantage of this method is that the method is not effective for cutting thin logs. The method is characterized by a reduced percentage yield and quality of the resulting product due to the separation of the most valuable - high-quality peripheral parts of logs, which limits the use of the final product as building and decorative and decorative materials from wood used in house building.

The present invention allows to solve the problem of increasing the volumetric yield and quality of decorative lumber obtained through the full use of the highest quality - the peripheral parts of the logs.

This is achieved by the fact that the cutting of a two-edged beam is carried out along two planes passing at an equal distance from the curved generatrix surfaces of the beam at the vertex and butt ends to obtain three-edged decorative lumber, for example, beams with a surface in the form of a log section, while the parallel surfaces of decorative lumber are equal between by height. Three-edged sawn timber of variable cross-section are cut in a plane that is equidistant from the curved forming surface at the vertex and butt ends, with three-edged decorative sawn timber, for example, beams with a surface in the form of a log section, while the parallel surfaces of the decorative sawn timber are equal in height. The curvilinear forming surface of decorative lumber is painted, mechanically processed, for example by grinding, fire-protection of the surface is made, on the opposite parallel surfaces of decorative lumber, support protrusions and installation grooves are made, the decorative lumber obtained is attached to the base with a plate opposite to the curvilinear forming surface, while between the butt parallel parallel surfaces of decorative insulation lumber is laid, for example based on natural fiber.

Figure 1 shows a log sawing, sawn into segments, and two-edged beam; figure 2 is a section aa of figure 1 and the plane of the division of the log; figure 3 shows a two-edged beam and cutting planes with obtaining three-edged decorative lumber, for example, beams with a surface in the form of a section of a log; figure 4 is a section bB of figure 3; figure 5 shows a segment of a log of variable cross section and parallel to the plane of division of the segment to obtain three-edged lumber of variable cross section; figure 6 is a section bb In figure 5; in Fig.7 shows three-edged lumber of variable cross-section and the plane of division with obtaining three-edged decorative lumber, for example a beam with a surface in the form of a section of a log; on Fig - section GG of Fig.7; figure 9 shows a three-edged decorative lumber with special support ledges and mounting grooves on parallel surfaces, respectively; figure 10 is a section DD of figure 9; figure 11 shows a method of fastening three-edged decorative lumber, for example beams with a surface in the form of a section of a log; on Fig - section EE of Fig.9.

A method for the production of decorative lumber from logs is as follows. Initially, two parallel cuts are made at the same distance from the central axis of the log 1 to obtain a two-edged beam 2 and two segments of variable section 3. The cutting of the two-edged beam 2 is carried out along two planes passing at an equal distance from the curved generatrix surfaces of the beam at the vertex and butt ends, with obtaining three-edged decorative lumber 4, for example, beams in the form of a section of a log, while the parallel surfaces of the lumber are equal in height. Segments of variable cross section 3 are cut in two parallel planes to obtain three-edged lumber of variable cross section 5 and rails. Three-edged lumber of variable cross section 5 is cut in a plane that is equidistant from the curved forming surface at the vertex and butt ends, with three-edged decorative lumber 4, for example, beams in the form of a section of a log, while the parallel surfaces of the lumber are equal in height.

It is possible to manufacture special support ledges and installation grooves on the parallel surfaces of three-edged decorative lumber 6 with the aim of joining them together in a single wall finishing material.

The curved forming surface of the decorative lumber 4 is painted, mechanically processed, for example by grinding, the fire protection of the surface is made, on the opposite parallel surfaces of the decorative lumber, support protrusions and installation grooves are made, the decorative lumber 4 is attached to the base with a plate opposite the curved forming surface, while between the parallel parallel insulation 7 is laid on the surfaces of decorative lumber, for example measures based on natural fiber.

Thus, the use of the proposed method for the production of decorative lumber from logs allows to increase the volumetric yield and quality of decorative lumber obtained through the full use of the highest quality - peripheral parts of the logs.

Information sources

1. Aksenov P.P. Technology of lumber [Text]: textbook. for universities / P.P. Aksenov, N.S. Makarova, I.K. Prokhorov et al. - M.: Timber industry, 1976. - 480 p.

2. RF patent No. 2110400, B27B 1/00, 1998.

3. DE 3018985 A, B27B 1/00, Eranciosi Giovanni; anmeldetag 05/17/1980; offenlegungstag 12/11/1980.

Claims (3)

1. A method for the production of decorative sawn timber from logs, including the implementation of two parallel cuts at the same distance from the central axis of the round timber to obtain a two-edged timber and two segments, cut on two parallel planes with three-edged sawn timber of variable cross-section and rails, as well as sorting the final product by qualitative and geometric characteristics, characterized in that the cutting of a two-edged beam is carried out on two planes, passing on equal away from the curved generatrix surfaces of the beam at the vertex and butt ends to obtain three-edged decorative lumber, for example, bars with a surface in the form of a section of a log, while the parallel surfaces of decorative lumber are equal in height. 2. A method for the production of decorative sawn timber from logs according to claim 1, characterized in that three-edged sawn timber of variable cross section is cut in a plane passing at an equal distance from the curved generatrix surface at the vertex and butt ends to obtain three-edged decorative sawn timber, for example, beams with a surface in the form section of the log, while the parallel surfaces of decorative lumber are equal in height. 3. A method for the production of decorative lumber from logs according to claim 1 or 2, characterized in that the curved forming surface of the decorative lumber is barked, machined, for example, by grinding, fireproofing of the surface is made, on the opposite parallel surfaces of the decorative sawn timber, supporting protrusions and installation grooves are obtained decorative lumber is fixed to the base with a plate opposite the curved forming surface, while between the butt parallel insulation surfaces, for example, based on natural fiber, are laid on the surfaces of decorative lumber.

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