RU2438862C1 - Method of producing edge-sawn timber from slabs and machine tool to this end - Google Patents

Abstract

FIELD: process engineering. ^ SUBSTANCE: proposed method comprises sawing of slab 3 whereat one of rotary disks 3 is rigidly positioned on edging machine. Width of required blank is set between rotary disks by displacing second disk. Width is continuously controlled by laser unit to optimise cutting along lines 13 from laser indicator. Slab is arranged on machine at the distance from moving disk that allows cutting minimum-length waney 11 off and smooth rejection of said waney. Said waney is rejected on moving saw disk side. Said waney is displaced on stationary saw disk by means of push rod 2 parallel with slab feed. Proposed device comprises work table 1, push rods 2, disks 3, 4, pneumatic clamps 5, draw-off plow 6, divider disk 7, riving knife 8, and laser unit 9. One of rotary disks 3 is rigidly secured on worktable while another disk 4 may displace horizontally relative to the first one. Draw-off plow 6 is arranged at the point of rotation of second disk. Push rod may displace waney 11 on the side of fixed disk. Laser unit is arranged above worktable, in slab feed zone, to optimise cutting, that incorporates sawn notch indicator to control produced blank. ^ EFFECT: expanded range of sawn slabs and higher yield of finished products. ^ 3 cl, 2 dwg

Description

The present invention relates to the woodworking industry and can be used in the processing of croaker sawmills and, in particular, to obtain additional products from the processing of croaker.

Today, the market offers different methods for processing wood, especially tree trunks, one of the main tasks of which is the maximum use of the trunk of the log. For this, various devices are also offered - machines that process both the entire trunk of the log and its parts.

Known methods of processing slab using a woodworking machine, for example, according to the patent of the Russian Federation No. 2313446 and US patent No. 4270423.

Known RF patent No. 2313446, published on December 27, 2007, (B27B 1/00 (2006.01, IPC) for an invention entitled "A method for producing edged lumber from slabs and a machine for its implementation (options)", intended for processing barked or unbarked rags for for producing edged sawn timber. This method includes longitudinal milling of the outer surface of the slab with the formation of a figured profile and sawing in one pass of the slab. This profile has the form of a stepped pyramid with rectangular ledges, inscribed as much as possible the contour of the cross section of the slab, with the creation of the basic edged surfaces for sawing, and longitudinal sawing is carried out by horizontal saws.The method is implemented using a trimming machine, which includes a bed, a mechanism for the longitudinal feed of the slab, an upper milling head with a horizontal spindle, forming a shaped profile of the processed slab, At least one milling head has the ability to form a shaped profile in the form of a stepped pyramid with rectangular ledges and base surfaces, as inscribed as possible in the contour of the cross section of the slab, while the machine is equipped with fixed longitudinal and rotating guide elements located on opposite sides of the saw device, interacting with the base surfaces. According to the second variant, the machine is equipped with two vertical milling heads with a vertical arrangement of spindles.

Its significant drawbacks are the complexity of the implementation, which provides for the processing of slabs by figure milling, as well as the structural complexity of the machine on which this method is implemented, which, mainly, is associated with the presence of milling heads.

US Pat. No. 4,270,423, published June 2, 1981 (B27B 7/02, B27B 1/00 (2006.01, IPC), describes a method for producing edged lumber and bulk lump from unbarked croaker. This method involves sawing a croaker at least , a pair of rotating disks mounted on a cutting machine, while between the rotating disks, the distance is preliminarily set to the size of the required workpiece obtained from the slab, the edged parts of the slab are deflected to the side from the cutting line with the help of discharge plows, which together with the distance setting I between the rotating disks mounted on the machine in one of the cross-sections of cut slab, the slab is fed uniformly to the said rotating disk via the corresponding pusher.

In the same patent, the working part of the edger is disclosed, which implements the aforementioned method. This part contains a working table having at least a pair of disks rotating in the vertical plane, mounted with the possibility of synchronous movement relative to each other, while on the side of each of these disks there are mounted plows made with the possibility of deflecting the inspection rail, and pushers, installed in the range of rotating disks and made in the form of a closed long chain, covering the entire length of the desktop.

The described method for producing edged lumber and bulk lump from unbarked croaker according to US patent No. 4270423 and the working part of the edging machine disclosed in the same patent are accepted as prototypes, since they contain the largest number of essential features that match the essential features of the claimed invention.

The disadvantages of this method, as well as the device that implements it, are: low productivity, the formation of a large volume of waste, unsuitable for further processing, the need to sort the croaker according to the distance between the rotating disks, which lengthens the processing of croaker.

The disadvantages of the working part of the edging machine according to the patent US No. 4270423 are the structural complexity of its execution, a limited range of sizes along the width of the processed rags.

The objective of the present invention is to provide a method for producing edged lumber from slabs and devices implementing it, ensuring the achievement of the following technical results:

1. Expanding the range of sizes of processed croakers (versatility).

2. Improving the accuracy and efficiency of sawing.

3. The increase in the yield of finished products.

The task to create a new method for producing edged lumber from slabs is solved as follows.

In the known method for producing edged lumber and bulk lump waste from an unbarked croaker, including sawing a croaker with at least a pair of rotary disks mounted on a cropping machine, between which the width of the required workpiece obtained from the croaker is preliminarily set, and one cropped part of the croaker they deviate to the side from the sawing line with the help of a discharge plow installed with a predetermined distance between the rotating disks on the machine in one of the slots for cutting the croaker, while The dust is fed evenly to said rotating disks using a suitable pusher, ACCORDING to the present invention, first one of the rotating disks is set to a rigid position on the edger, the width of the required workpiece is set between the rotating disks by moving the second disk, and the size of this width is constantly monitored using a laser optimization unit cutting, pre-equipped on the machine, after which the slab is laid on the machine, placing it relative to the movable disk at a distance ue providing sawing waney slats minimum width ensuring retraction of the flexible rack, which is carried by the movable blade, and a detachable waney rail side fixed plate on the machine is moved with the pusher parallel to the slab feeding.

The proposed method is implemented using the working part of the edging machine, which contains a working table on which a pair of disks rotating in the vertical plane is mounted, between which a distance can be changed, while a diverting plow is installed on the side of one of these disks, capable of deflecting the sighting rail, and in the alignment of at least one rotating disk, a pusher is placed, ACCORDING to the present invention, one of the rotating disks is mounted rigidly on the desktop, and the second, if possible Strongly horizontal movement relative to the first, and in its rotational alignment is set discharge plow, while the part of the fixed disk pusher is arranged to move the respective waney slats.

There is an option for the development of the proposed device, according to which a laser unit is equipped over the work table in the slab feed zone to optimize cutting with a cut indicator with the ability to control the resulting workpiece.

Such a new technical solution, with its entire set of essential features, allows you to increase the size range of the processed croaker, to increase the yield of finished products.

The applicant has conducted a patent information search on this topic and the claimed combination of essential features has not been identified. Therefore, the present invention can be recognized as new.

This invention meets the patentability criterion of "inventive step", since it logically does not follow from the prior art for a specialist of average qualification. So, for example, in the prototype and similar practical methods for processing a slab, the two rotating disks are moved relative to each other on the machines. So they set the cut of the croaker in its central part. In the present invention, only one rotating disk is moved, and with it, the minimum width of the oblique rail is set, and from it the slab is already cut to the required width of the workpiece.

The essence of the proposed method and the proposed device is illustrated by the following example of a specific application and drawings.

Figure 1. - Scheme of the working part of the machine that implements the proposed method (top view).

Figure 2. - Scheme of the working part of the machine that implements the proposed method (side view).

The proposed method is carried out in the following sequence.

The croaker is obtained in the process of sawing wood (not shown) on the machines of the first row (disk, timber). Then the slab, which has a natural shape and any width, is fed to the edger without preliminary sorting. On a cutting machine, one of the rotating disks is pre-set to a rigid position, and the width of the required workpiece is set between the rotating disks by moving the second disk, and the size of this width is constantly monitored using a laser cutting optimization unit pre-equipped on the machine. The slab is laid on the machine, positioning it relative to the movable disk to a distance that ensures sawing of the oblique rails of the smallest width with the flexible removal of this rake, which is carried out from the side of the movable saw blade, and the detachable oblique rail from the side of the stationary disk is moved along the machine with a pusher parallel to the feed croaker.

The implementation of the proposed method, as well as the operation of the corresponding working part of the edging machine, is presented below.

The proposed device (Fig.1-2) contains: a desktop with a chain feed 1, pushers 2, a fixed rotating disk 3, a movable rotating disk 4, pneumatic clamps of the workpiece 5, an exhaust plow 6 of the inspection rail 11, a saw blade of the dividing unit 7, propping knife 8, laser cutting optimization unit 9, lines from the laser cutting optimization unit 13. Devices and mechanisms for driving the working part of the edger are not the subject of this invention and are not shown in the drawings.

The device operates as follows.

When working with the crochet 10, first one of the rotating disks 3 is set to a rigid position on the edging machine, the width of the required workpiece 10 is set between the rotating disks 3, 4 by moving the second disk 4, and the size of this width is constantly monitored using a laser cutting optimization unit 9 by lines 13 from the laser pointer. Then the slab 10 is manually stacked on the work table 1 and set so as to ensure sawing of the oblique rail 11 of the minimum width with the flexible removal of this rail. The movement of the slab 10 is carried out by pushers 2, one of which pushes the slab, and the other - the inspection rail 11 from the side of the fixed disk 3, which can be sent for further processing. The deflected sighting rail 12 from the side of the movable disk 4 is diverted to the side by means of a discharge plow 6, and then it does not participate in horizontal sawing. The slab after removal of the inspection rails is moved to the saw blade 7 and the wedging knife 8 for horizontal sawing.

When working with an unedged board, the saw blade 7 of the dividing unit is first removed and the drive 7 is not started.

An example implementation of the method using the proposed device.

As a slab, boards were taken with a width of 350 mm. On the working part of the edging machine, the width of the required workpieces between the rotating disks 3 and 4 was set, and the size of this width was constantly monitored using a laser unit 9 for cutting optimization. The process of sawing the croaker was carried out in accordance with the previously disclosed method. As a result, the following edged sawn timber with dimensions was obtained from each board: 25 × 150; 25 × 100 and a bar measuring 25 × 50.

Thus, the technical result of the claimed invention is achieved, which consists in increasing the size range of the processed slabs and increasing the yield of finished products.

At the same time, similar experimental processing of slabs was carried out on machines of the type indicated in the prototype. The results indicated in the example above were not obtained, since to work with the machine disclosed in the prototype, it is necessary to adjust it to a pre-sorted croaker. In addition, inspection rails cannot be used for further processing to produce finished products.

Claims (3)

1. A method of obtaining edged sawn timber from slab, including sawing slab, at least a pair of rotating disks mounted on a cutting machine, between which pre-set the size of the width of the required workpiece obtained from the slab, and one edged part of the slab deviate to the side of the line sawing with the help of a discharge plow installed with a predetermined distance between the rotating disks on the machine into one of the slots for cutting the croaker, while the croaker is fed evenly to the said rotating disks using the appropriate pusher, characterized in that at first one of the rotating disks is set to a rigid position on the edging machine, the width of the required workpiece is set between the rotating disks by moving the second disk, and the size of this width is constantly monitored using a laser cutting optimization unit, pre-equipped on the machine, after which the slab is laid on the machine, placing it relative to the movable disk at a distance that ensures sawing of the oblique rail of the minimum width they are provided with the flexible removal of this rail, which is carried out from the side of the movable saw blade, and the detachable inspection rail from the side of the fixed disk is moved along the machine with the help of a pusher parallel to the feed of the slab. 2. A device for producing edged sawn timber from slab, containing a working table on which a pair of disks rotating in the vertical plane is mounted, between which a distance can be changed, while a discharge plow is installed on the side of one of these disks, capable of deflecting the sighting rail, and in the alignment of at least one rotating disk there is a pusher, characterized in that one of the rotating disks is mounted rigidly on the desktop, and the second with the possibility of horizontal movement tions relative to the first, and in its rotational alignment is set discharge plow, while the part of the fixed disk pusher is arranged to move the respective waney slats. 3. The device for producing edged sawn timber from slab according to claim 2, characterized in that a laser unit is equipped above the work table in the slab feed zone to optimize cutting with a cut indicator with the ability to control the resulting workpiece.

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