SK250092A3 - Processing method of thin slots for production of pasted blocks - Google Patents

Abstract

Process for processing thin cuts for glued production blocks using the convergence of the cutout where the cutout is divided by three longitudinal cuts into two equal segments with rounded sides removed with a saw or milling tool at an angle (β) which is in the range of 55 ° to 65 °, preferably 60 °. At the same time, the saw or milling tool copies the angle (a) given by the convergence of the cutout. After the application of the adhesive to the lateral surfaces, the panels are stacked side by side in blocks so that at each face of the block, the larger sub-bases alternate with the smaller ones, with the lateral surfaces aligned with each other.

Description

úplast techniky

The present invention relates to a method for processing thin slits for producing glued blocks using the convergence of the slits.

BACKGROUND OF THE INVENTION

The prior art sawing methods for sawing logs into lumber are based on longitudinal cutting or milling of sawmill logs, the cut of the saw tool being guided parallel to the axis of the log. All current longitudinal slitting technologies such as cut-through cut, cut-through cut, block cut-off etc. are based on this principle. The final product is a semifinished product - sawn timber and its shape from geometric smoothing represents a parallelepiped whose all edges and surfaces are parallel to the axis of the cut. The saw cut, which is created by the cross-section of the logs, is cut from the geometric surface of the ska by a leather cut. Thus, it has two circular cross-sectional bases of unequal diameter. The deflection of the surface from its axis indicates the convergence of the cut-out. By comparing the timber volume and the log volume, the timber yield is given. The size of the timber yield is dependent on the dimensional parameters of the logs, i. cutout diameters, convergence and length.

With decreasing diameters, increasing convergence and length of cut-outs, the yield significantly decreases. It is also known to process thin slits for the production of lumber according to the number. of the author's certificate no. 267077, which partially removes the previously mentioned shortcomings. The essence of this solution is that the cut-out is divided into two halves by longitudinal cut, each cut by longitudinal cuts into three identical elements, in which rounded parts are milled and subsequently milled parallel to the surface created by deflecting a rounded cutout truncated pyramids. However, this method of processing the slots is very laborious.

2 Summary of the Invention

The aforementioned drawbacks are substantially eliminated by the method of processing thin slits for the production of glued blocks, wherein the slits are divided by three longitudinal slices into two equal segments, which after drying to the desired moisture level on the surfaces to be cut, the essence is that They are removed by a saw and then straightened or removed only with a milling cutter at an angle in the range of 55 ° to 65 °, preferably 60 °, thereby forming trapezoidal cross-sectional parts where the larger base with the cut edge forms the angle. At the same time, the saw or milling cutter follows the angle given by the convergence of the cutout and is formed by the longitudinal axis of the segment base with the longitudinal edge of the segment base. alternate larger bases of parts with smaller ones, while lateral aligned parts of the parts fit together so that the course of the rings of adjacent parts of the block is contradictory ·

An advantage of the method of processing thin slits for the production of glued blocks according to the invention is that from the slots made of less valuable thin logs, it is possible to achieve higher lumber yield and to produce glued blocks of any width, with less labor.

Overview of the drawings

The attached drawing shows the principle of a method of processing thin slits for the production of glued blocks according to the invention, wherein in FIG. 1 shows a longitudinal section through two equal segments; FIG. 2 shows a comparison of the cut surfaces; FIG. 3 shows the formation of a trapezoidal part using the convergence of the cutout, and FIG. 4 shows the stacking of the individual parts side-by-side in gluing.

Exemplifying the invention

Thin saw diameter processing on thinner cut-out face diameter on thicker cut-out face length of cut-out convergence of cut-out cut-out volume of cut-out

Dimensions of the manufactured block:

width length thickness volume of glued cutout block of the following parameters:

d - 0.18 and D = 0.21 m L = 3.0 mz = 1 cm / m Vv = 0.0895 m ³ b = 0.285 m 1 = 3.0 mh = 0.065 m V ^ = 0.0556 represents 62.1% by volume

Claims (2)

PATSNTOVB P R O P O I A method of processing thin slits for producing glued blocks, wherein the slice is divided into three equal segments by two longitudinal cuts, which after drying for the desired humidity on the cut flats are characterized in that the round flanks of each segment are removed with a saw and then are aligned or removed only with a milling cutter at an angle / µl that is in the range of 55 ° to 65 °, preferably 60 °, to form trapezoidal cross-sectional parts where a larger cut edge forms this angle / fif, with a saw or milling cutter At the same time, the tool follows the angle [?] given by the convergence of the cutout and is formed by the longitudinal axis of the segment base with the longitudinal edge of the segment base, where the parts so formed after application of glue on the lateral flats fold together into blocks so that block is always alternating larger bases parts with smaller, while laterally aligned The planes of the workpieces must interlock, The course of the rings of the adjacent parts of the block is contradictory. 2. Method for processing thin slits according to claim 1, characterized in that the side surfaces of the workpieces are machined with a shaped tool to form a rugged surface.