Working or preserving wood or similar material and nailing or stapling machines in general (B27)
B27 Working or preserving wood or similar material; nailing or stapling machines in general(13104)
FIELD: wood-working industry.SUBSTANCE: invention relates to woodworking, namely to production of particle boards from oriented chips. Particles are supplied to guide elements. Reciprocating movement elements is performed. Time of elements movement in forward direction is determined depending on height of particles drop, ratio of distance between adjacent guide elements and average length of wood particles, as well as from number of cycles particles turning.EFFECT: quality of orientation of particles is increased.1 cl, 1 dwg
FIELD: wood working industry.SUBSTANCE: group of inventions relates to woodwork, in particular, to devices for edging strip application on parts. Nozzle device comprises nozzle housing with air inlet channel, groups of air outlet holes and locking elements. Air intake channel is made with possibility of connection to hot air generator. To nozzle housing pressurized hot air can be supplied. Air outlet holes are made vertically spaced apart on nozzle housing surface side facing to edging strip. Holes are connected by flow with air inlet channel. Groups of air outlet holes are arranged in edging strip feeding direction at distance from each other. Number of locking elements corresponds to number of groups of air outlet holes. Locking elements are made so, that some of air outlet holes may be selectively opened and locked depending on fed edging strip width.EFFECT: increasing rate of edging strip application on parts.12 cl, 6 dwg
FIELD: technological processes.SUBSTANCE: invention relates to processing systems for workpiece processing. Processing system includes at least one processing machine, primarily crosscut saw, and at least one cutting device for processing machine. Processing machine comprises drive unit to generate drive torque transmitted to cutting device, at least one workpiece positioning unit (12a; 12b; 12c) used as workpiece support during processing of the latter, and at least one movable installed working tool guidance unit (14a; 14b; 14c), on which cutting device is located. Cutting device contains at least one flexible cutting element (18a; 18b; 18c) and at least one guiding assembly (20a, 20b, 20c) for direction of flexible cutting element (18a; 18b; 18c) movement. Working tool guiding assembly (14a; 14b; 14c) is installed with possibility of linear movement along at least one axis (156b, 156c) and/or with possibility to turn about at least one other axis. At that, working tool guiding assembly (14a; 14b; 14c) is installed with possibility to turn about at least one axis (50a; 50b; 50c), passing at least essentially perpendicular to workpiece positioning unit (12a; 12b; 12c) support surface (22a; 22b; 22c).EFFECT: technical result consists in obtaining accurate cuts in processed workpiece.7 cl, 10 dwg
FIELD: wood-working industry.SUBSTANCE: group of inventions relates to woodworking, particularly, a device for limiting depth of a cut for disk saws. Device comprises a body of a processing machine, cutting depth guide unit for mechanism for adjusting cutting depth and bearing unit. Bearing unit comprises a support which, in order to limit cutting depth, rests against support zone of body of processing machine. Support can move relative to guide unit for mechanism for adjusting cutting depth along path of guide unit. Guide unit for mechanism for adjusting cutting depth comprises a control element for guide unit for mechanism for adjusting cutting depth, which is installed movably relative to a rack guide of guide unit for mechanism for adjusting cutting depth. Support is installed on guide unit for mechanism for adjusting cutting depth. Cutting depth limiting device has a unit for providing mobility of support relative to guide unit for mechanism for adjusting cutting depth, configured for translational movement and/or rotation around axis of motion.EFFECT: simplified design.12 cl, 6 dwg
FIELD: pulp and paper industry.SUBSTANCE: invention relates to a method of producing protective coatings on cellulose materials and articles therefrom. Method involves forming on material a substrate layer and a main protective coating, wherein substrate applied onto surface is polyvinyl acetate (PVA) by dipping article in an aqueous emulsion with concentration of 20–40 %, article is dried to constant weight at 60–70 °C with subsequent application of two layers of varnish EP-5123 with viscosity of 12–16 with by pulverising for 8–12 s with continuous rotation, wherein each layer is dried to constant weight.EFFECT: technical result consists in production of protective coating on cellulose material, which at high temperatures enables to preserve its physical stability.1 cl, 1 tbl, 5 ex
FIELD: wood-working industry.SUBSTANCE: invention relates to wood-working industry, in particular to production of modified wood. Drying is performed, degassing and impregnation of wood blanks with a water composition. Water composition contains a phenol-alcohol, a 30 %-dispersion of silica sol and a 3 %-aqueous solution of carbon nanotubes.EFFECT: higher strength and biostability of wood, reduced content of free phenol and formaldehyde in articles.1 cl, 3 dwg, 2 tbl
FIELD: furniture.SUBSTANCE: invention relates to furniture production and can be used in production of furniture parts, such as doors, shutters, decorative pads, planks and other front parts, is aimed at development of such a process, which enables production of furniture parts with high moisture-and heat resistance with lower labour input. Method is carried out as follows: sawing a workpiece for base of required size from wood material from an array of wood or fine fraction (hereinafter MDF board), or particle board (hereinafter DSP), or laminated particle board (hereinafter lDSP), or laminated fine fraction (hereinafter LMDF), or aluminium composite material, or sheet material of polyvinyl chloride, or sheet of acrylic plastic, or sheet monolithic polycarbonate. Workpieces are sawn from sheet transparent or coloured in mass, or structured acrylic plastic, or monolithic polycarbonate with already applied decorative substrate and/or without decorative substrate, that is applied after cutting material. At ends on periphery is applied a fixing layer, which is an adhesive tape of acrylic, or silicone adhesive without substrate or substrate made from polyvinylchloride, or foamed polyethylene, or polyethylene terephthalate, or acrylic or silicone, coated on both sides with acrylic, or silicone adhesive.EFFECT: further method includes gluing on two opposite ends of base of workpiece made of sheet transparent or coloured in weight, or structured acrylic plastic or monolithic polycarbonate.1 cl, 1 dwg
FIELD: wood-working industry.SUBSTANCE: group of inventions relates to woodworking, particularly, to mechanised tool. Cutting device for processing machine comprises a flexible cutting element, including cutting elements connected to each other by means of connecting element. Connecting element ends even with outer surface of one of cutting elements and made integral with one of cutting elements. Connector is made in form of hooked longitudinal protrusion of one of two cutting elements or in form of a pin. Processing system includes a cutting device and portable process machine, comprising a fitting assembly for connection with geometrical and/or force closure with cutting device.EFFECT: higher efficiency and accuracy of processing a workpiece with a flexible cutting element.9 cl, 14 dwg
FIELD: wood working industry.SUBSTANCE: group of inventions relates to woodwork, in particular, to production of fiberboards. Environmentally safe plate is made of a biodegradable resin composition containing resin based on polylactic acid, a cross-linking agent and wood fibre. Biodegradable resin composition comprises 0.001 parts by weight to 10 parts by weight of the crosslinking agent and 50 parts by weight to 300 parts by weight of the wood fiber based on 100 parts by weight of the polylactic acid resin. Specific gravity of wood fibre is 700 kg/m3 or less. Performed is high-temperature moulding of the composition in the form of a board by heating the said composition and cross-linking the composition forming the board.EFFECT: improved water resistance and increased strength of plate bending is provided.9 cl, 1 tbl
FIELD: wood-working industry.SUBSTANCE: group of inventions relates to woodworking, particularly to cutting devices. Cutting device for a processing machine comprises a flexible cutting element and a guiding assembly. Maximum size of the flexible cutting element in a direction substantially perpendicular to the cutting plane of the flexible cutting element is less than 4 mm. Flexible cutting element and the guiding assembly both form a closed system. Portable processing machine comprises a fitting device intended for connection with a geometrical and/or a force closure with the cutting device. Processing system includes a cutting device for the processing machine and a portable processing machine.EFFECT: provided is reduced required drive power of the cutting device.10 cl, 4 dwg
FIELD: wood-working industry.SUBSTANCE: group of inventions relates to woodworking, particularly to production machines. Portable processing machine having spindle driven into oscillatory movement comprises clamping device for fixing a working tool. Clamping device comprises a clamping unit having a clamping element for clamping working tool in axial direction, extending parallel to axis of rotation and/or drive shaft rotational axis. On clamping element there is a clamping head for clamping working tool at free end of clamping unit. Clamping unit has a guide assembly which guides at least one movement of working tool along at least one direction of movement, different from axial direction. Clamping head has a clamping surface arranged asymmetrically relative to longitudinal axis of clamping element. System consists of at least one portable processing machine and working tool, clamped in clamping device of portable processing machine.EFFECT: simplified assembly and disassembly of working tool.7 cl, 5 dwg
FIELD: wood-working industry.SUBSTANCE: group of inventions relates to woodworking, particularly to cutting devices. Cutting device for a processing machine comprises a flexible cutting element and a guiding assembly both forming a closed system. Guiding assembly comprises the main flexible element and a holder of the flexible cutting element having at least two differently oriented guiding surfaces provided for directing the flexible cutting element in the assembled state. Main element of the guiding assembly is made T-shaped or the flexible cutting element holder contains at least two elements holding the flexible cutting element. Processing system includes a cutting device and a portable processing machine with a fitting assembly for connection with a geometrical and/or a force closure with the cutting device. Cutting device is separated from the element ensuring transmission of the torque, which is located in the guiding assembly.EFFECT: provided is higher strength of the guiding assembly of the cutting device.14 cl, 12 dwg
FIELD: wood-working industry.SUBSTANCE: invention relates to woodworking, particularly to fire-retardant processing of wood. Prior to application of a varnish or a paint with a fire retardant in the amount of 10-20 % of the weight of the coating material the surface of the protected wood is applied with a fire-retarding composition with the flow rate of not less than 300 g/m2.EFFECT: higher fire safety of wood.1 cl, 2 tbl, 2 ex
FIELD: chemistry.SUBSTANCE: invention is related to a composition containing specially oriented lignocellulose fibre, connected by means of polymer with an inorganic hydrate, such as gypsum. Fibre is a curable composition that contains lignocellulose fibre containing less than 15 wt% of free moisture connected with the help of polymer with an inorganic hydrate, that contains less than 5 wt% of free moisture, in the absence of additional amount of water.EFFECT: technical result consists in higher water resistance of the composition.19 cl
FIELD: wood working industry.SUBSTANCE: group of inventions relates to woodwork, in particular to production of boards from wood flour. Board contains resin based on cross-linked polylactic acid and wood flour. Wood flour is present in amount of 50 to 150 weight parts per 100 weight parts of resin based on cross-linked polylactic acid. Resin based on cross-linked polylactic acid is obtained by heat-initiated or radiation-initiated cross-linking. Board is produced by high-temperature molding of composition with subsequent treatment. Obtained board is used to form multilayer flooring material.EFFECT: higher water resistance of board.15 cl, 1 tbl
FIELD: wood-working industry.SUBSTANCE: invention relates to woodworking industry, in particular, to machines for lengthwise sawing of timber. Radial saw machine comprises a bed to support a thrust disc for a circular saw. Saw is limited against an axial displacement with aerostatic lateral guides. Saw is driven by compressed air jets flowing from an air duct. Thrust disc, the aerostatic lateral guides and the bed form a closed loop of rectangular cross-section. In the aerostatic lateral guides on the side of the saw blade there are curved grooves connecting outlets with the rear part of the saw teeth.EFFECT: higher efficiency of the machine operation, reduced air consumption.1 cl, 3 dwg
FIELD: wood-working industry.SUBSTANCE: group of inventions relates to woodworking, particularly to machining of asymmetric billets. Device includes two straight guides (1, 2) parallel to axis (3) of centers of the machine, and billet gripping devices (4a, 4c) having inner ring (7) arranged in outer casing (5). Inner casing is made with possibility of rotation around the axis of machine tool centers. External housing is connected with linear displacement drive by rod (6a, 6c) and is mounted on two straight-line guides with the possibility to move along the guides in longitudinal direction. Inner casing is equipped with side circular guides (8) and comprises drive supply unit (7a). Radial clamps (9) have clamping heads (10) that project inside the casing and configured to move in radial grips by means of hydraulic cylinder drive (9a). Pressure force of clamping heads on side surface of workpiece is controlled by sensors (11).EFFECT: higher efficiency.8 cl, 13 dwg
FIELD: wood working industry.SUBSTANCE: invention relates to woodworking, particularly to production of particle boards. Transport system sorting chips involves installation of sorting chips, pneumatic transport system, area of grinding and belt conveyors. Transport system comprises cyclone and pneumatic chamber with vibrating sieve and fan for dust removal, mounted in front of scraper conveyor. Bottom scraper conveyor frame with sieves are arranged to reciprocate by crank gears. Drives of crank gears have electric motors with frequency converters for adjustment of oscillation frequency. Cell sieves comply with those for internal chips and impose layers.EFFECT: higher quality and efficiency of chips sorting section.1 cl, 1 dwg
FIELD: wood-working industry.SUBSTANCE: invention relates to wood-working industry, namely to production of wood-fiber materials for producing boards. Wood-fiber material for boards contains a wood fibre and binder. Cellulose-containing raw material is used as a wood fibre, and oxidised tall oil from hardwood or hybrid rocks is used as a binder. Method of making boards from wood-fiber material by forming comprises preparing the composition of the wood fibre and binder, hot pressing and thermal treatment. Heat treatment of wood-fiber material for boards is performed at 165±5 °C for 3-4 hours, oxidised tall oil used as a binder is produced by single-stage heating of tall oil up to temperature of 190±5 °C with continuous air bubbling under pressure of up to 3 kgf/cm2 for 4-5 hours.EFFECT: higher environmental safety, improved physical and mechanical properties, hydrophobic properties, resistance to environment influence and durability, low cost.2 cl, 3 tbl
FIELD: wood-working industry.SUBSTANCE: invention relates to woodworking, particularly to installations for processing of logs. Installation consists of base (1) made of interconnected lengthwise (2) and transverse (3) channels. On the base there are longitudinal guides (4). On the longitudinal guides is installed truck (5). Track is a metal structure in the upper part of which there are installed front (6) and rear portals. On the front portal is installed a carriage (7). Log (33) is placed on jacks (32) along the axis of the body and fixed with front (22) and back(23) setworks. Cam plate is arranged in the form of two parallel longitudinal cam-guides (24) and (25), installed on the base. Cam is interconnected with profiled cutting elements by means of the additionally installed on the base and connected among themselves slides, lead screws, handle controls. Profiled cutting elements are installed on truck with a possibility of movement perpendicular to log axis, repeating the position of elements of master cam.EFFECT: quality of processed logs increase, wood losses decrease, power consumption and labor costs decrease.1 cl, 4 dwg
FIELD: wood working industry.SUBSTANCE: invention relates to woodworking, particularly to lines for ripping timber. Band headrig sawing conveyor line has a closed transport line with zones of loading timber and its unloading after sawing, a mechanism to feed timber from loading to unloading zone, from 2 to 100 bandsaw machines forming stages of ripping timber and arranged between its loading and unloading zones, bandsaw machines and timber feed mechanism control unit. Timber feed mechanism consists of trolleys and is able to move them along the closed transport line by means of a DC motor. Each of the bandsaw machines consists of two vertically arranged U-sections fixed in the upper part with a horizontal bar for vertical movement of sawing unit. Sawing unit comprises driving and driven pulleys with a saw band stretched between them, driving pulley drive motor, saw band tension adjustment mechanism.EFFECT: higher efficiency of finished material production is reached.4 cl, 3 dwg
FIELD: wood working industry.SUBSTANCE: invention relates to woodworking, particularly to production of biocomposite materials. Wood dust is mixed with lignosulphonate at the ratio of 1:1. Liquid glass is added in the amount of 3 % of total press-bulk. Mat formation using pre-pressing and hot pressing is performed at pressure 13.1 MPa and temperature of 179-181 °C for 5 minutes.EFFECT: shorter duration of making biological composite material.1 cl, 1 tbl
FIELD: woodworking industry.SUBSTANCE: group of inventions relates to woodworking, particularly to processing solid wood. Wood is impregnated with a solution containing citric acid and sodium silicate. Impregnated wood is held at the temperature of 150-220 °C. Ratio of citric acid and sodium silicate in the solution is 1:5-1:10.EFFECT: provided is higher strength and biological stability of the wood.10 cl, 5 tbl
FIELD: construction.SUBSTANCE: invention relates to production of decorative finishing materials and multilayer flexible element and method for production thereof. Method of producing flexible element for use as decorative and/or functional element for coatings in fashion industry, production of furniture and design, comprises connection by applying a layer of rigid material made from wood on a flexible substrate by means of adhesive to produce a multilayer element and cutting layer of rigid material to form a network of slots on layer of rigid material. Layer of flexible substrate used is fabric, to form a network of slots, method comprises design of texture in vector graphics, defining structure of grid lines, and its loading into memory device for forming and focusing laser beam of device of high capacity for subsequent laser engraving and/or cutting layer of rigid material by melting and high-temperature evaporation, caused by laser beam to create network of slots on layer of rigid material and imparting multilayer element flexibility.EFFECT: invention provides creation of universal technology of processing of rigid materials, aimed at using fabric-like or other flexible material.9 cl, 8 dwg
FIELD: tools.SUBSTANCE: invention relates to manual cutting tools, particularly, to tools for hunting and tourism. Machete-saw consists of a blade with single-sided sharpening and a handle attached to the blade. On the blade butt there are teeth for sawing timber. Blade has a straight shape with lenticular sharpening and rounded end of the blade. Saw teeth are spaced apart every other in opposite directions. Handle is made in the form of a movable console attached to the blade with the help of two bolts with nuts. Next to the handle the blade has a serration. In the handle there is a hole to fix a cord.EFFECT: provided is higher strength of the blade.3 cl, 1 dwg
FIELD: machine building.SUBSTANCE: invention relates to portable processing machines, primarily portable processing machines with spindle driven into oscillatory movement. Portable machine comprises at least one clamping device for fixation of working tool. Clamping device comprises at least one clamping assembly (12a, 12b) having at least one rod-like clamping element (14a, 14b) for clamping working tool (16a, 16b) in axial direction (18a, 18b), and at least one located on clamping element (14a, 14b) clamping head (20a, 20b), having at least two movable relative to each other sections (30a, 32a, 32b 30b). Clamping device also includes at least one unit (22a, 22b) for conversion of motion for movement depending on movement of clamping element (14a, 14b) made at least substantially in axial direction (18a, 18b), at least two moving relative to each other sections (30a, 30b, 32a, 32b) of clamping head (20a, 20b) at least in one direction, different from axial direction (18a, 18b). Unit (22a, 22b) for conversion of motion is made in form of a movable unit (92 a; 92b) for displacement of at least in one mode of operation of clamping unit (12a, 12b) at least two moving relative to each other sections (30a, 32a, 32b 30b) of clamping head (20a, 20b) relative to each other in opposite directions (34a, 34b, 36a, 36b). Sections (30a, 30b, 32a, 32b) of clamping head (20a, 20b) have clamp surface (72a, 74a) which upon pressing working tool (16a, 16b) in axial direction of clamping unit (12a, 12b) are spaced apart to fit at least to surface of working tool (16a, 16b), and effect on working tool (16a, 16b) in axial direction (18a, 18b) with clamping force.EFFECT: technical result consists in increasing service life of process machine.7 cl, 7 dwg
FIELD: instrument making.SUBSTANCE: clamping device contains at least one clamping unit to clamp working tool in axial direction, at least one control unit for clamping unit and at least one return motion damping unit provided at least for damping return motion of control unit. Return motion damping unit is provided in order to create in opposite directions of motion control unit friction moments different on magnitude.EFFECT: disclosed is a structure of a clamping device.9 cl, 7 dwg
FIELD: construction.SUBSTANCE: invention is related to construction finishing materials and method for manufacturing of the layer for production of construction panels. Layer is essentially uncured. Method includes application of powder mix including fibers and thermosetting binding component onto the carrier, forming a layer of powder mix, wherein the powdered mixture connected together so, that layer of powder mix, and in which a layer of powder mix is significantly uncured. Powder mix layer is separated from the carrier. Present invention is also related to such layer and the method for production of construction panels.EFFECT: invention ensures creation of the layer, which can be processed as a separate product, which is a semi-finished product, which simplifies and extends its use.25 cl, 15 dwg, 5 ex
FIELD: wood-working industry.SUBSTANCE: invention relates to wood-working industry, particularly, to wood impregnation. Plant for impregnation includes closed impregnating tank, filled with impregnation fluid, pumps, valves, and control equipment. Plant is equipped with hydrostatic thermo-hydraulic pressure generator, made in form of tight, elastic, heat-insulated shell, and filled with liquid heat-sensitive working medium. Within shell there are heat exchangers. Plant is equipped with check stop valve, installed in line which connects impregnation tank and shunting vessel. Shunting vessel is located above impregnation tank.EFFECT: higher operation efficiency of plant for wood impregnation.1 cl, 2 dwg
FIELD: wood working industry.SUBSTANCE: invention relates to woodworking, particularly, to impregnation of wood materials. Wood materials are impregnated with salt solutions. During impregnation of wood materials, said materials are dried by exposure to resonance electromagnetic oscillations. Exposure to resonance electromagnetic oscillations is carried out by a combination of waves in range from 2×10-1 Hz to 15×10-7 Hz.EFFECT: simplified process of impregnation of wood materials.1 cl
FIELD: wood working industry.SUBSTANCE: group of inventions relates to production of boards from wood fibre. Board contains resin based on cross-linked polylactic acid and fibre. Wood fibre is present in the amount of 50-150 weight parts per 100 weight parts of resin based on cross-linked polylactic acid. Resin based on cross-linked polylactic acid is obtained by means of cross-linking initiated by heating or radiation. Board is produced by high-temperature molding of composition with subsequent treatment. Obtained board is used to form multilayer flooring material.EFFECT: higher water resistance of the board.15 cl, 1 tbl
FIELD: wood working industry.
SUBSTANCE: group of inventions relates to woodworking, particularly, to production of composite wood products. Multiple substrates contact with binding composition and partial hardening of binding composition are made. One or several multifunctional aldehyde compounds may include two or more carbon atoms and two or more aldehyde functional groups, or two or more carbon atoms, at least one aldehyde functional group and at least one functional group, which represents an aldehyde functional group. Carbon atom of at least one aldehyde functional group has first communication with first tannin molecule and second connection, which is formed by first tannin molecule, second tannin molecule or oxygen atom of at least one aldehyde functional groups.
EFFECT: reduced emission of formaldehyde.
20 cl, 3 tbl
FIELD: wood working industry.
SUBSTANCE: invention relates to cutting of logs with core rot with output on one end. Longitudinal cutting of logs are conducted parallel to axis for two segments. Longitudinal cutting segments is conducted are parallel to generatrix of timber without rot core and combined central parts of variable cross section, containing core rot. Produced combined central parts are separated into high-quality and low-quality sections. Then in low-quality sections bark is removed and rot at rise to produce semi-products with alternating rectangular cross section, which after drying and further processing are turned relative to each other by 180° and connected into baffle boards or beam. In high-quality sections bark is removed parallel to longitudinal axis to produce lumber with alternating rectangular cross section, which after drying and further processing is turned relative to each other by 180° and connected in face into baffle boards or beams.
EFFECT: higher volume yield of sawn goods.
1 cl, 7 dwg
SUBSTANCE: tool is intended for machining, during movement by drive about rotational axis and includes cutters with cutting edges. Due to their rotation around axis of rotation, cutting edges define a cutting contour. Plane of rotation is provided, which includes a point of cutting edge and is located perpendicular to axis of rotation. Furthermore, plane of cross section of the cutter is provided, which includes point of cutting edge and is perpendicular to cutting edge. Cutting edge at said point and in plane of cross section forms a rear angle, a sharpening angle and a front angle of cutting. Cutting edge at said point is located at an angle of inclination of rear face to axis (1) of rotation, and cutting contour is located at angles to plane of rotation, in which edge forms effective rear angle, effective sharpening angle and effective face angle of cutting. Rear angle is ≤ 0°, and angle of inclination of rear face and mounting angle are coordinated with each other so that effective rear angle is ≥0°.
EFFECT: higher durability of cutting tool.
17 cl, 6 dwg
SUBSTANCE: group of inventions relates to extruded composite material, method for production and use thereof. Composite material contains wood fibre material and polymer. Wood fibre material is wood core material, in which content of knots or branches is at least 20 wt%, or birch bark, or wood material impregnated with an extract, obtained by extraction of knots, branches or bark. Polymer content is 5-25 % of weight of composite material. Wood core material is material derived from pine. Polymer is a polyalkylene or biopolymer. Solid composite material is obtained by mixing wood fibre material and polymer and extrusion of mixture. Composite material is used as construction, decorative, packing, transportation or furniture material.
EFFECT: higher hardness, low moisture absorption and swelling capacity.
5 cl, 5 tbl
FIELD: wood working industry.
SUBSTANCE: invention relates to production of sawn items from plank timber. Logs of diameter from 40 to 60 cm at top ends are sawn into two two-edged beams, and from unedged segments two three-edged half-beams are obtained, wherein thickness of two-edged beams and thickness of three-edged half-beams are equal to one fourth part of log top end diameter. Working range of two-edge beams thickness change and of three-edged half-beams thickness change when calculating and arranging mills is chosen within 0.2-0.3 of log top end diameter. Logs with top end diameter of 60 cm and more, are sawn into three two-edge beams, and from unedged segments three three-edged half-beams are obtained. At that, thickness of two-edged beams and thickness of three-edged half-beams are equal to 0.185 of log top end diameter. Working range of two-edge beams thickness change and three-edged half-beams thickness change is chosen within 0.16-0.21 of log top end diameter.
EFFECT: higher yield of edge-surface lumber from large- and great-dimension plank timber.
1 cl, 44 dwg, 6 tbl
FIELD: wood working industry.SUBSTANCE: group of inventions relates to woodworking, particularly to production of panels from wood fibres and binder. First layer from the first mixture based on powder containing wood fibres and heat-curing binder are applied onto core. Liquid substance is applied to first mixture on powder basis. First mixture on powder basis drying is performed. Core is turned over with dried first mixture on powder basis so that first mixture on powder basis is directed downward. Second layer is applied onto upper part of core. First and second layers are hardened by heat supply and pressure. First layer forms balancing and/or protective layer. Second layer forms decorative surface layer in construction panel. Separate and continuous balancing and/or protective layer contains powdered mixture of connected fibres and non-hardened heat-curing binder.EFFECT: higher strength and water-resistance of panels.24 cl, 12 dwg
FIELD: wood working industry.SUBSTANCE: invention relates to woodworking, particularly to transport handling devices. Above platform there is movable flat frame with handler table control cabin installed on four saddle-shaped rollers resting on triangular guide beams arranged along edges along whole length of platform. Between guides on longitudinal beams with flanges hydraulic handling cart is mounted on fork wheels, consisting of two fork frames welded of trough-shaped beams directed towards each other and with flanges directed to each other articulated with levers of equal length. Cart by two hinges is connected with movable frame and can move together with it along platform in one or other side with help of reverse single drum two rope hoist installed on separate frame attached from below to middle platform and connected by ropes, spanned through via blocks with movable frame. Frame stroke limiting is carried out by track switches arranged along platform edges.EFFECT: simplified loading and unloading of cargo.1 cl, 5 dwg
FIELD: machine building.SUBSTANCE: invention relates to wood industry, and more specifically to a device for chipless dividing of logs into sectors. Blade mechanism comprises radially arranged in circle longitudinally dividing disc blades.EFFECT: simultaneous increase of productivity of division of logs into sectors, high output, power saving, higher surface quality of cutting.1 cl, 1 dwg
FIELD: wood working industry.SUBSTANCE: invention relates to hand-held devices for crosswise sawing of timber. Miter box contains horizontal platform (1) and two side walls (2) with vertical slit-like cutouts for execution of sawing. To horizontal platform bottom additional plate (5) is mounted. Blanks pressing assembly is composed of two vertical rods (8) attached at bottom to protruding parts of additional plate, and above is to crossbar (9). On ledges of additional plate there are holes for screws (14) attaching blanks pressing assembly rods to plate. To additional plate bottom shock-absorbers (7) are attached. To additional plate bottom hollow metal box (13) is fixed by means of screws (15). Upper part of clamp bolt (12) has possibility of jointing with detachable switch (29). Height of shock-absorbers is by 2-3 mm greater than that of hollow metal box.EFFECT: simplified design of miter box.1 cl, 15 dwg
FIELD: machine building.SUBSTANCE: invention relates to design of portable technological machine. Portable machine, primarily hand-held machine, contains at least one spindle (12a; 12b; 12c; 12d; 12e; 12f; 12g; 12h; 12i; 12j; 12k) for installation and driving working tool (14a; 14b; 14k), at least one brake assembly (16a; 16b; 16k) for braking of at least in spindle braking mode (12a; 12b; 12c; 12d; 12e; 12f; 12g; 12h; 12i; 12j; 12k) and/or working tool (14a; 14b; 14k), at least one safety unit (18a; 18b; 18c; 18k) to prevent spontaneous separation of the working tool (14a; 14b; 14k) from spindle (12a; 12b; 12c; 12d; 12e; 12f; 12g; 12h; 12i; 12j; 12k) at least in braking mode and coding unit (20a; 20b; 20c; 20d; 20e; 20f; 20g; 20h; 20i; 20j) for encoding connector at least between spindle (12a; 12b; 12c; 12d; 12e; 12f; 12g; 12h; 12i; 12j; 12k) and safety unit (18a; 18b; 18c; 18k). Coding unit (20b) is made in form of an electronic, electric, optical, magnetic and/or electromagnetic coding unit (20b). Proposed system comprises portable processing machine (10a; 10b; 10k) and at least one replaceable module (40a, 40b; 40k), made in form of brake unit (16a; 16b; 16k).EFFECT: technical result consists in improvement of safety during operation of machine.6 cl, 20 dwg
FIELD: machine building.SUBSTANCE: invention relates to hand-held machine. Safety device of manual machine to prevent spontaneous separation of clamping element (12a; 12b; 12c) and/or working tool (14a, 14b, 14c) from spindle (16a; 16b; 16c) contains at least one transfer assembly (18a; 18b; 18c) and at least one cam mechanism (20a; 20b; 20 c), having at least one cam link (22a, 72a; 22b, 72b; 22c, 72c). Cam mechanism (20a; 20b; 20c) has at least one cam slot (24a, 74a; 24b, 74b; 24c, 74c), in which at least partially enters cam link (22a, 72a; 22b, 72b; 22c, 72c). Cam slot (24a, 74a; 24b, 74b; 24c, 74c) is made in the form of grooves.EFFECT: technical result consists in improvement of reliability of safety device and safety of manual machine.10 cl, 7 dwg
FIELD: machine building.SUBSTANCE: invention relates to design of clamping device of hand-held machine. Clamping device comprises at least one clamping unit (12a; 12b; 12c) for operating the tool holder (14a; 14b; 14c) on a spindle (16a; 16b; 16c) by clamping the working tool (14a; 14b; 14c) in the axial direction (28a; 28b; 28c) to the slip on flange (80a; 80c) and at least a safety assembly (18a; 18b; 18c) to prevent inadvertent separation of the clamping assembly (12a; 12b; 12c) and/or the working tool (14a; 14b; 14c) form the spindle (16a, 16b, 16c). Safety assembly (18a; 18b; 18c) has at least one motion changing unit (20a; 20b; 20c) for at least partial conversion in braking mode of the first relative motion between the at least two members of the clamping unit (12a; 12b; 12c) clamping elements (22a, 24a; 22b, 24b; 22c, 24c) representing a pivoting around axis (86a; 86c) of the spindle rotation, to the second relative movement, which is a movement in the axial direction (28a; 28b; 28c). First clamping element (22a; 22b; 22c) is mounted in the second clamping element (24a; 24b; 24c) adjustably in the circumferential direction (58; 58b; 58c) and axially (28a; 28b; 28c). Device is provided with at least one stop element (42a, 44a, 46a; 42b, 44b, 46b; 42c, 44c) for limiting at least one relative movement between the two clamping elements (22a, 24a; 22b, 24b; 22c, 24c). EFFECT: technical result is improved reliability and safety of hand-held machine.10 cl, 10 dwg
FIELD: machine building.SUBSTANCE: invention relates to hand-held machine. Clamping device of hand-held machine comprises at least one fastening assembly (12a; 12b; 12c) for locking the working tool (14a; 14b; 14c) on a spindle (18a; 18b; 18c) in the axial direction (16a; 16b; 16c) and at least one disconnecting assembly (20a; 20b; 20c) for removing at least one fastener (22a; 22b; 22c), which is part of the fastening assembly (12a; 12b; 12c), in the axial direction (16a; 16b; 16c ). Device is provided with a safety unit (26a; 26b; 26c) for preventing the fixing unit spontaneous compartment (12a; 12b; 12c) and/or the working tool (14a; 14b; 14c) of the spindle (18a; 18b; 18c) in the braking mode. Safety assembly (26a; 26b; 26c) in made to provide for at least partially converting the first relative motion between the at least two members of the fixing assembly (12a; 12b; 12c), fixing elements (22a, 28a; 22b, 28b; 22c, 28c), which is the pivoting around the axis (68a; 68b; 68c) of rotation of the spindle, the second relative movement, which is a movement in the axial direction (16a; 16b; 16c). EFFECT: technical result is prevention of disengagement of the fastening assembly and/or working tool from spindle in braking mode.11 cl, 9 dwg
FIELD: machine building.SUBSTANCE: invention relates to hand-held machine components. Safety device to prevent inadvertent separation of the clamping element (12a) and/or the working tool (14a) of the spindle (16a) in the braking mode comprises at least one transmission unit (18a; 18b), comprising a first transmission element (26a, 26b), second transmission element (72a, 72b), movable relative to the first transmission element (26a, 26b), and a node (84a, 84b) change the motion for converting a mode of braking the first relative movement between the first transmission element (26a, 26b) and the second transmission element (72a, 72b) to the second relative movement. Safety device comprises the component compensating unbalance (20a; 20b) in order to reduce the transmission (18a; 18b) unbalance during manual operation of the machine. Unbalance compensating component (20a, 20b) includes at least one unbalance compensating element (22a, 22b; 24a, 24b) movably installed in the transmission element (26a, 26b) being a part of the transmission assembly (18a, 18b). EFFECT: technical result consists in reduction of unbalance of the transmitting element during the hand-held machine operation.9 cl, 7 dwg
FIELD: metallurgy.SUBSTANCE: invention relates to methods and devices for affecting processing characteristics of individual regions of sheet materials. Method includes fixing on work bench sheet material, or pre-compacted material or material in form of a fibrous mass. Placing at least one applicator on upper and/or lower sides of material. Applicator is moved from upper and/or lower side of material and improving medium is fed under pressure into separate areas of materials. Compression performed on pre-compacted material or material in form of a pulp sheet to form a predetermined thickness.EFFECT: ensuring efficiency of action on separate areas of materials by providing a sealing system.40 cl, 7 dwg
FIELD: machine building.SUBSTANCE: hand machine has a housing, a drive unit, a transmission mechanism provided to convert the rotary motion generated by the drive unit in an oscillating motion and having an output shaft, and a tool holder for fixing at least one removable tool and driven into an oscillating motion of the output shaft of the transmission mechanism. Planting machine has a neck extending at least partially in the circumferential direction around the output shaft, and formed cylindrical having a profiled axial side surface provided for fixing the fastening device by snap-locking in the axial direction.EFFECT: achieved the expansion of technological capabilities and improving the ease of use of the machine.9 cl, 6 dwg
FIELD: chemical industry.SUBSTANCE: invention relates to plastic article made in middle part in form of hollow tubular element. Each of two ends of hollow tubular element is closed with a solid body, at first end of tubular hollow element there is a displacing body, which is in section of transition from hollow element to first solid body, and at second end of hollow tubular element is a cavity, which passes between tubular hollow element and second solid body. Invention also relates to process plant.EFFECT: use of present invention provides a plastic article, which has low weight, high stability of shape and high accuracy of compliance with preset sizes.20 cl, 17 dwg
FIELD: woodworking industry.SUBSTANCE: invention relates to woodworking, particularly to devices for lubrication of saw chains. Device contains a vessel for grease and means to feed grease through a system of tubes in saw chain. Means for feeding grease contains hydraulic circuit and is designed to drive hydraulic system of saw. Hydraulic device comprises a piston housing, valve body and a dispenser, which is connected to valve body. Piston and valve body are connected to a grease lubricant. When hydraulic pressure of saw increases, piston housing is adapted to move grease from grease tank, shifting at same time valve body from a first position to a second position so that lubricant is fed into dispenser. When hydraulic pressure drops, valve body is adapted to return to another position in which dispenser is adapted to open, allowing grease to pass through tubes into chain saw.EFFECT: simple design, reduced loss of lubricating material.7 cl, 1 dwg
FIELD: chemistry.SUBSTANCE: invention relates to production of lignocellulose polymer composite materials and articles based thereon. Method comprises drying components, preparation and mixing thereof, forming products by heating a thermoplastic polymer. Matrix used is a thermoplastic polymer in amount of 80-20 wt%. Filler is buckwheat husks in air-dry state in amount of 20-80 wt%. Additionally, process additives are added in amount of 8-10 % of weight of mixture. Additive used is an antioxidant and/or UV stabiliser and/or UV-absorber and/or lubricant and/or mineral filler and/or dye and/or fireproof component and/or heat stabiliser and/or foaming agent. Thermoplastic polymer used is thermoplastic waste or used products processed products thereof.EFFECT: improved physical-mechanical and operational properties and environmental friendliness of ready product.3 cl, 2 tbl