Method of producing wooden glued board and blank for its fabrication

FIELD: process engineering.

SUBSTANCE: method of producing glue board comprises sawing required number of glued boards of blank made by gluing strips together off said blank, glued boards being notable thinner than blank proper. Then, strips are made up of layer of strips by gluing at least two parts so that sides of annual rings of said parts are opposed in horizontal and/or vertical direction. Note here that layers of plates thus produced are glued in required amount one onto another. Direction of fibers of different parts in layer of strips and between layers arranged one above the other are selected so that annual rings of adjacent layers of almost all glued boards to be sawn off are located on opposite sides of glued board.

EFFECT: simple and fast method suitable for commercial production.

16 cl, 5 dwg

 

The invention relates to a method of manufacturing wooden laminated boards, presented in restrictive part of paragraph 1 of the claims and to the workpiece for its production, are presented in the restrictive part of paragraph 6 of the claims.

According to known technology wooden laminated boards, i.e. glued drivability, made, for example, by gluing the edges, i.e. the narrower sides of a suitable number of rails to obtain a sufficiently wide laminated boards. This path is suitable for production of single boards. In the industrial manufacture of laminated veneer boards, the thinner you need to make a Board, the more inefficient it turns out this way. In the industrial production of laminated boards can be made of the so-called "beam method", when first made sufficiently thick laminated wooden beams, which must be a preparation, for example, for a few bars with a cross section of 50100 mm, These strips will stick together along the longer sides or lateral edges, so that in the bars, which are placed one on another, each second has a wood rings, face down, and each has the following tree annual rings facing up. Thus, to prevent deformation in the adhesive joints. Then glued wooden products and adverting sign is first sawn timber, for example, band saw, into four parts as thin laminated boards. The problem in this way is such a fitting direction of the fibers in the planks, glued to one another, so that even in the most outer laminated sawn boards the direction of the fibers would be such that the outer laminated boards without bending. It is virtually impossible to implement. In this case, the necessary compromise on the grounds of cost, because when using raw material and limited time is not always possible to perform the correct adjustment of the direction of the fibers in the bars. As a result, in at least part of the material in the most outer laminated boards to be sawed, often bends due to tension wood. Figure 1 and 2 shows such a workpiece in the form of glued timber and sawed-off outer glued wooden boards. Detailed description figures 1 and 2 below.

The present invention is to eliminate the above disadvantages and to develop a simple, fast, and industrially applicable method of manufacture of wood glued boards and the glued boards. While preferably made of laminated Board all directions of the fibers in the layers are adjusted so that even the sawed-off from billet external boards almost do not buckle. The way in is accordance with the invention is characterized by signs, presented in the characterizing part of paragraph 1 of the claims. Accordingly, the workpiece for the manufacture of laminated boards in accordance with this invention is characterized by the features presented in the characterizing part of paragraph 6 of the claims. Other embodiments of the invention are characterized by the features presented in the other claims.

The advantage of the new structure of the preform, provided by the method according to this invention is, among other things, the fact that it is possible to effectively produce industrially using the so-called "beam-way" if possible, cheap and with good quality wooden laminated boards, which are largely small or almost no bending of laminated boards, sawed-off from the edges of the workpiece. In addition, in this case, the connecting direction of the fibers in the layers of glued boards, sawed-off from the edges of the workpiece, such that each successive layer of the annual ring is on the other side glued boards. An additional advantage is harmonious-looking final product, which can be removed for aesthetic errors. For example, the final Board product no knots in the lines.

Below the invention is described in more detail by means of example with reference to the drawings.

Figure 1 is rendered famous workpiece for the manufacture of laminated boards, end view;

figure 2 shows sawed-off from the famous blanks glued Board;

figure 3 shows a blank for the manufacture of laminated boards in accordance with the present invention, end view;

figure 4 shows a cut from billet outer laminated Board in accordance with the present invention;

figure 5 shows the preferred embodiment of blanks for the manufacture of laminated boards in accordance with the present invention, end view.

Shown in figure 1 is known glued wooden beams, is used as the workpiece 11 to be sawing off the glued boards, consists of several wooden slats 22A-22d, installed on one another on their long sides or side edges. The cross-section installed on one another slats has a size of, for example, 50100 mm, These straps are adjusted to each other with respect to the location of the wood fibers, so that the annual rings of each of the second strips 22a, 22c facing down, and the rings of each of the following strips 22b, 22d facing up. From preparation 11 sawed-off marked on figure 1 the lines 55 of the connector, for example, band saw, glued boards 33a-33d with a width equal to the width of the workpiece 11. As follows from figure 1, each of the second medium layer laminated boards 33b, 33c, i.e. sawed-off portion of each second strap 22a, 22c has the direction of the fibers, which then rings facing down, while in the cut side of each second strap 22b, 22d annual rings almost turned in the opposite direction, i.e. upwards. For this reason, the average glued boards 33b and 33c remain essentially straight and almost not bent. The direction of the fibers of the outer laminated boards 33a, 33d poor from the point of view of the bend. The direction of the grain of all layers laminated boards 33a such that the annual rings in the drawing is turned to the right, while the direction of the grain of all layers laminated boards 33d are such that the rings on the drawing facing left. Accordingly, the annual rings in the joint layers of the two outer boards 33a and 33d are all layers on the same side of the laminated Board.

As shown in figure 2, the direction 44 of fibers cut from the workpiece 11 and the outer laminated boards 33d is that all layers of the annual rings are on the same side of the laminated Board, i.e. on the side 55.

Figure 3 and 4 shows the structure in accordance with the present invention. In these figures shows a blank 1 for the manufacture of wooden laminated boards, which consists of several layers of wooden planks, glued on top of one another on their long side or lateral edges.

Each of these layers of slats assembled by gluing together at least two adjacent parts, at least one of these parts is 2a-2d is a broader, and at least one part 2aa-2dd is more narrow. All strips in the layer is made almost the same principle, even though mutual size and the mutual direction of the fibers of these parts may vary. Further detail will be described only the two outer-most layer of the bars. On the top layer of slats with at least one wider portion 2a to the left, in which the fiber direction is selected, for example, so that the annual rings facing down and almost to the center of the layer strips, and one narrower portion 2aa right, in which the annual rings are turned in the opposite direction in relation to the wider part 2A, i.e. the drawing up and out from the layer of planks. Part 2a and 2aa glued on the sides for the formation of the layer strips with a rectangular cross section.

Accordingly, in the second top layer strips with at least one narrower portion 2bb left, in which the fiber direction is selected, for example, so that the annual rings are directed upwards and outwards, and one wider portion 2b to the right, in which the annual rings on the drawing facing up and almost to the center layer of slats 1. Part 2bb and 2b also glued the sides to the formation of the layer strips with a rectangular cross-section. When the topmost layer of slats glued to the next layer of slats under it, a narrower part 2aa and 2bb layer the strips retain their position one relative to another, and, consequently, wider part 2a and 2b also retain his position one relative to the other on opposite sides of the vertical center line of the workpiece 1. To the lower surface of the second top layer strips glued next layer strips 2c, 2cc, almost matching layer strips 2a, 2aa, etc. so that each successive layer strips narrower part of the layers of strips and, consequently, the wider part of the layers of strips are against one another from opposite sides of the vertical center line of the workpiece 1. Complete preparation 1 cut shown in figure 3 the lines of section 6, for example, band saw, getting glued boards 3a-3d with a width equal to the width of the workpiece 1. The adhesive connection 7 between the wider part and a narrower part in the layer of slats can be on the cutting line, but can also be located in some other place, as seen in the cutting line on the left side.

As shown in figure 4, the direction of the fibers 4 in the sawed-off from the workpiece 1 outer laminated Board 3d is such that each second layer 5a, 5c has rings, looking at the drawing to the right, and each successive layer 5b, 5d has rings, looking at the drawing on the left. Thus, in this case, the rings of each of the second layer are on opposite sides from each other.

F. the D.3 illustrates two structurally slightly different type 2a, 2aa and 2b, 2bb layer of bars in which to form the workpiece 1 equal parts glued alternately one on top of another.

The same good result is achieved with only one type of layers of strips - for example, layers of strips of the type 2a, 2aa, every second of which the workpiece is flipped upside down. The workpiece 12 is formed such layers of slats shown in figure 5. Contrast to the workpiece figure 3 is only in the more narrow part 2bb and 2dd are upside down in relation to the corresponding parts of figure 2. It is essential that the outer sawed-off laminated boards 3a and 3d rings of each of the second layer located on the opposite side of the laminated Board, and in this case there is a significant manifestation of the bend.

Laminated Board in accordance with this invention is manufactured as follows: first, make the workpiece 1, 12 by forming essentially in the form of a rectangle layers of strips, which consist of at least one wider portion 2a-2d and at least one narrower portion 2aa-2dd. These wider and narrower parts glue with one another, choosing the mutual direction of the fibers of these parts so that the annual rings are either in vertical direction or in horizontal direction from opposite sides of the mentioned parts of the layer p is ANOC. Rings layer strips of the type 2a, 2aa located in the vertical direction from opposite sides of the mentioned parts 2a and 2aa layer, whereas rings layer strips of type 2b, 2bb look sideways or horizontal direction from opposite sides of the mentioned parts 2b, 2bb. Made so layers of strips are glued to each other on top of one another along their longer sides, so that each successive layer of slats rings wider part 2a-2d are on the opposite side from the adjacent layer of planks. In this case, the rings of each of the second wider part 2a-2d layer of slats converted, for example, up, and each other down. The direction of the fibers of the layers of strips are chosen so that when the finished workpiece 1 saw band saw for a few more narrow parts 3a-3d laminated boards, all adjacent direction of the fibers in the layers 5a-5d sawn laminated boards differ from each other and, therefore, placed in such a way that every second of the adjacent layers has rings on opposite sides.

As for the harmonious and aesthetic end result of layers of strips, collected from them laminated Board made of laths, sawn-off, for example, from different trees, so that all layers 5a-5d of the finished laminated boards made of various widodaren. In this case, the finished laminated Board has overall harmonious appearance and, for example, in lines no knots.

For professionals it is clear that the invention is not limited to the above examples but can be modified within the scope of the claims. Thus, for example, depending on the desired width of the laminated Board, the workpiece may have a different number of layers of strips than previously presented. This number can be, for example, any desired number between 2 and n, where n is an integer.

For professionals it is clear that the direction of the fibers can be selected as shown above. It is essential that the direction of the fibers of the layers of strips selected so that all sawn laminated boards each next layer had rings on the opposite side.

In addition, for professionals it is clear that the layers of strips may also have parts of different width in number than two.

For example, there may be three or four parts, or in some bars even only one.

For professionals, furthermore, it is clear that puff strap can have two parts of almost equal width, in which the annual rings are located on the other side of each of the following either in the horizontal or in the vertical direction.

1. A method of manufacturing glued wooden boards, which saw off from just the Cai, formed by gluing planks, the desired number of laminated boards, substantially thinner than the workpiece, wherein the strap is formed as a layer strips by gluing between the at least two parts, so that the sides of annual rings of these parts are located on opposite sides from each other in the horizontal and/or vertical direction, and the thus formed layers of strips glued in the desired amount on top of each other.

2. The method according to claim 1, characterized in that the direction of fibers of different parts of the layer strips inside layer of slats and between installed one on top of another layer of strips is chosen so that the annual rings of adjacent layers of almost all glued boards, be sawing off, are located on opposite sides glued boards.

3. The method according to any one of claims 1 or 2, characterized in that the layer of strips is formed by gluing together two pieces of various sizes.

4. The method according to any one of claims 1 or 2, characterized in that parts of different size layers of slats placed one on top of another, have mutually crosswise, and the direction of the fibers between spaced one above the other layers of strips are chosen so that at least in the wider parts of the rings the two layers of boards were located regarding some of the other on opposite sides of the layer of slats.

5. The method according to claim 3, characterized in that parts of different size layers of slats placed one on top of another, have mutually crosswise, and the direction of the fibers between spaced one above the other layers of strips are chosen so that at least in the wider parts of the rings the two layers of strips were placed against one another from opposite sides of the layer of slats.

6. The method according to any one of claims 1, 2 or 5, characterized in that all layers of the strips collected from two parts of different sizes so that they were practically identical, and all of the layers of strips are placed in the workpiece by the mutual bonding of one over the other, so that every other puff Planck directed top down.

7. The method according to claim 3, characterized in that all layers of the strips collected from two parts of different sizes so that they were practically identical, and all of the layers of strips are placed in the workpiece by the mutual bonding of one over the other, so that every other puff Planck directed top down.

8. The method according to claim 4, characterized in that all layers of the strips collected from two parts of different sizes so that they were practically identical, and all of the layers of strips are placed in the workpiece by the mutual bonding of one over the other, so that every other puff Planck directed top article the party down.

9. The workpiece for the manufacture of laminated boards, be sawing off from billet almost thinner than the workpiece, containing several strips, glued one on top of the other, and the workpiece is substantially thicker than the finished laminated boards, characterized in that at least part of the bars represents the layers of strips, which are formed from at least two parts, with part of annual rings of these parts are located on opposite sides from each other in the horizontal and/or vertical direction, and the direction of fibers of different parts in the layer of slats within a layer and between layers of slats mounted one above the other, chosen so that the annual rings of adjacent layers of almost all be sawing off the glued boards are located on opposite sides of the laminated Board.

10. The workpiece according to claim 9, characterized in that the stator blanks for the manufacture of glued boards are layers of slats.

11. The workpiece according to any one of p or 10, characterized in that the layers of strips formed of two parts of different size, which are glued to each other.

12. The workpiece according to any one of p or 10, characterized in that the portions of different sizes placed one on top of another layer of slats placed crosswise, and the direction of the fibers between the loc is defined on top of the other layers of the strips is chosen so at least in the wider parts of the rings the two placed one on top of another layer of strips was one relative to the other on opposite sides of the layer of slats.

13. Procurement claim 11, characterized in that the portions of different sizes placed one on top of another layer of slats placed crosswise, and the direction of the fibers between arranged one on top of another layer of strips is selected so that at least in the wider parts of the rings the two placed one on top of another layer of strips was one relative to the other on opposite sides of the layer of slats.

14. The workpiece according to any one of PP, 10 or 13, characterized in that all layers of slats assembled from two parts of different sizes so that they were practically identical, and all layers of slats placed in the workpiece by the mutual bonding of one over the other, so that the upper side of each of the other layer of the slats facing down.

15. Procurement claim 11, characterized in that all layers of slats assembled from two parts of different sizes so that they were practically identical, and all layers of slats placed in the workpiece by the mutual bonding of one over the other, so that the upper side of each of the other layer of the slats facing down.

16. Procurement item 12, characterized in that all layers PLANO is assembled from two parts of different sizes so that so they were almost identical, and all layers of slats placed in the workpiece by the mutual bonding of one over the other, so that the upper side of each of the other layer of the slats facing down.



 

Same patents:

FIELD: construction.

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EFFECT: expansion of method functional capabilities.

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3 cl, 4 dwg, 3 ex

FIELD: construction.

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6 cl, 3 dwg

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8 cl, 7 dwg, 2 ex

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FIELD: construction.

SUBSTANCE: wooden sleeper is made of pressed wood massif, with density of 800 kg/m3, moisture of 10-12%, and two end inserts also made of pressed wood with density of 900-1000 kg/m3, moisture of 10-12%, installed in areas of steel gasket fixation to sleeper and containing distillation residue of sterol rectification in amount of 15-17% from dry wood mass. Value of ultimate strength of inserts when chipped along wood fibres is at least 20 MPa, value of swelling forces across fibres is not more than 10 MPa, height of inserts is at least 30 mm. Forecasted service life of sleeper is 50 years.

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2 dwg, 1 tbl

FIELD: wood working industry.

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1 tbl, 6 dwg

FIELD: woodworking industry.

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EFFECT: invention provides design simplification and reliability improving of line.

2 dwg

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22 cl, 4 dwg

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11 cl, 10 dwg

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EFFECT: obtainment of construction beams of specified shape and strength properties.

1 dwg, 1 tbl

FIELD: construction.

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EFFECT: invention will allow receiving a material with high technological properties.

2 cl, 5 dwg

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