RU2524187C1 - Method of cutting logs - Google Patents

Abstract

FIELD: woodworking industry.

SUBSTANCE: method of cutting logs comprises longitudinal cutting, removal bark from the core parts along the rise, drying, turning and connecting. Longitudinal cutting of log is carried out in parallel with two opposite generants to obtain shortened timber from the log central zone. In core parts obtained as a result of longitudinal cutting of several logs the edges are sawed parallel to the longitudinal axis. After drying and additional processing the obtained semiproducts are turned relative to each other by 180° and connected in a beam. The core part of round timber obtained as a result of longitudinal cutting is turned by 90° and cut into timber of alternating rectangular cross-section. After drying and additional processing the timber of alternating rectangular cross-section is turned to each other by 180° and connected to the shield along the edge. In the uncut timber the bark is removed along the rise at an angle to the sawn wood faces, they are turned by 180° relative to each other and interconnected along the edge to the shield.

EFFECT: reduced amount of wood waste.

6 cl, 11 dwg

Description

The invention relates to the woodworking industry and can be used in the manufacture of lumber.

A known method of manufacturing radial lumber. The method includes sorting logs by diameters, debarking, forming a section of a log into a hexagon, sawing a hexagon into two parts of a quadrangular section, sorting and stacking parts into a stack, drying, processing parts of a quadrangular section along side edges, gluing parts into a block and sawing a block into lumber. When sawing a billet of a hexagonal cross section from a log, the planes of two opposite cuts are oriented parallel to the axis of the log, the remaining four cuts are oriented parallel to the run of the log, after which the hexagon is sawn into two identical parts, while the plane of the cut is oriented along the axis of the log and parallel to the planes of the first two cuts. Then, after drying, the side edges of the parts are milled along the run, after which the milled parts are glued together by the inclined surfaces of the edges, while the parts to be glued are laid in a block, alternately changing the vertex and butt end. The disadvantage of this method is the high labor costs [1].

A known method of producing glued lumber from the side boards of logs. The method includes drying the side boards symmetrically located in the log, trimming along the run and planing their edges, gluing along the edge after turning the plates and the ends of one of the boards 180 ° and trimming the resulting semi-finished product from two ends to give the product a rectangular shape. The edges of the side boards are milled along the run with a slope corresponding to the inclination of the edge surface, one of the boards is cut into two parts, directing the cut parallel to the longitudinal axis of symmetry of the board. The obtained three workpieces are glued along the inclined edges so that the sawn off parts of one board are after turning their ends and sheets 180 ° from two sides of the whole board [2].

This method is adopted as a prototype. The disadvantage of the prototype is the low volume and quality yield of sawn timber.

The present invention solves the problem of cutting with obtaining high quality sawn products with a minimum amount of wood waste.

The technical result of the invention is to ensure the rational use of wood when processing it for sawn timber.

The technical result is achieved by the fact that the method of cutting logs includes longitudinal cutting, removing bark from the core parts along the run, drying, turning and joining. According to the invention, the longitudinal cutting of the logs is carried out in parallel with two opposite generators to obtain shortened lumber from the central zone of the log, and for the core parts made of longitudinal logs of several logs, the edges are sawed parallel to the longitudinal axis, after drying and additional processing of the resulting blanks, they are turned relative to each other 180 ° and connected into a beam, the core part of round timber turned over as a result of longitudinal cutting t by 90 °, sawn into sawn timber of variable rectangular cross-section, which, after drying and additional processing, are turned 180 ° relative to each other and joined along the edge into a shield, for unedged sawn timber, the bark is removed along its run perpendicular to the layers, and rotated by 180 ° relative to each other and connecting each other along the edge of the shield, removing the bark along the run at an angle to the layers, removing the bark along the run with the simultaneous formation of a joiner's element, from lumber of large width after ud deeria of the cortex cut out one or several workpieces parallel to the longitudinal axis, then the obtained side blanks of variable cross-section are turned 180 ° relative to each other and connected along the edge into a shield.

Figure 1 shows a longitudinal cutting of a log, carried out in parallel with two opposite generators with obtaining unedged lumber 1, shortened lumber 2 from the Central zone of the log and the core parts 3; figure 2 - removal of the cortex from the core part 3 parallel to the longitudinal axis and obtaining the workpiece 4; figure 3 - workpiece 4 of the core parts connected to a bar; figure 4 - cutting of the core part 3 on the lumber of variable rectangular cross section 5; figure 5 - lumber 5 glued to the shield; figure 6 - removal of the bark from unedged lumber 1 along the run perpendicular to the layers to obtain blanks 6; Fig.7 - blank 6 glued to the shield; on Fig - removal of the bark from unedged lumber 1 along the run at an angle to the layers to obtain blanks 7; figure 9 - workpiece 7 glued to the shield; figure 10 - cutting unedged lumber 1 large width on the workpiece of rectangular cross section 8 and the side workpiece 9; figure 11 - side blanks 9 glued to the shield.

The method of cutting logs is as follows. The longitudinal cutting of the logs is carried out in parallel with two opposite generators with obtaining edged lumber 1, shortened lumber 2 from the central zone and the core parts 3. The core pieces 3 obtained from the cutting are removed from several logs from the bark parallel to the longitudinal axis to obtain blanks 4, after drying and additional processing workpieces 4 deploy them relative to each other by 180 ° and connect to the beam.

The core parts 3 obtained as a result of longitudinal cutting, if necessary, are turned 90 ° and sawn into sawn timber of variable rectangular cross section 5, which, after drying and additional processing, are turned 180 ° relative to each other and connected along the edge into a shield.

In order to increase the volume output of sawn products, the removal of bark from unedged lumber 1 is carried out along the run perpendicular to the layers to obtain blanks 6, which are turned 180 ° relative to each other and are interconnected along the edge into a shield. It is possible to remove the bark from unedged lumber 1 at an angle to the layers to obtain blanks 7, which are also rotated 180 ° relative to each other and are interconnected along the edge into a shield. And it is also possible to remove the bark from unedged lumber 1 with the simultaneous formation of the elements of the joinery.

In order to reduce warpage of glued boards from unedged lumber 1 of large width, after removing the bark, one or several blanks 8 of rectangular cross section are cut parallel to the longitudinal axis, then the obtained side blanks 9 of variable cross section are turned 180 ° relative to each other and connected along the edge into a shield.

The proposed method for the production of sawn timber from logs allows the rational use of wood.

Information sources

1. A method of manufacturing radial lumber: US Pat. 2310556 ROS. Federation: IPC В27В 1/00 / Rudenko V.Ya., Tupitsyn V.P., Isaev S.P., Begunkov O.I., Shkutko V.V., Rudenko Y.V .; applicants and patent holders: State educational institution of higher professional education "Pacific State University", LLC "Daltekhnodrev". - No. 2006112162/03; declared 04/12/2006; publ. 11/20/2007.

2. A method of obtaining glued lumber from the side boards of logs: US Pat. 2438861 Ros. Federation: IPC В27В 1/00 / Chervinsky V.A., Boldyrev B.C., Schepkin V.B., Kozhukhova I.G .; Applicants and patent holders: Voronezh State Forestry Academy State Educational Institution of Higher Professional Education. - No.2010113142 / 13; declared 04/05/2010; publ. 10/10/2011.

Claims (6)

1. A method of cutting logs, including longitudinal cutting, removing bark from the core parts along the run, drying, turning and joining, characterized in that the longitudinal cutting of the logs is carried out in parallel with two opposite generators to obtain shortened lumber from the central zone of the log, and the resulting longitudinal cutting of the core parts of several logs saw off the edges parallel to the longitudinal axis, after drying and additional processing of the resulting workpieces unfold them relative to each other CAA 180 ° and connected to timber. 2. The method according to claim 1, characterized in that the core part of the round timber obtained as a result of longitudinal cutting is turned 90 °, sawn into sawn timber of variable rectangular cross section, which, after drying and additional processing, is turned 180 ° relative to each other and joined along the edge to the shield. 3. The method according to claim 1, characterized in that for unedged lumber, the bark is removed by run perpendicular to the layers, rotated by 180 ° relative to each other and connected to each other along the edge of the shield. 4. The method according to claim 1, characterized in that in unedged lumber, the bark is removed by run at an angle to the layers. 5. The method according to claim 1, characterized in that in unedged lumber, bark removal is carried out along the run with the simultaneous formation of elements of the joinery. 6. The method according to claim 1, characterized in that one or several workpieces are cut out of large lumber after removing the bark parallel to the longitudinal axis, then the obtained side blanks of variable cross-section are turned 180 ° relative to each other and connected along the edge into a shield.

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