FI59745C - SAETT OCH ANORDNING FOER IMPREGNERING OCH FOERBAETTRING AV IMPREGNERINGSBARHETEN AV SAOGVIRKE OCH KANTSKURET RENT TRAEVIRKE SAERSKILT AV SVAORIMPREGNERBARA TRAESLAG OCH AV DESSA TILLVERKADE KONSTRUKTIONSDELAR - Google Patents

Description

EJBrTl ΓΒΐ «« ANNOUNCEMENT ΓΟΠΑΓ ”UTLAGG NI NQSSKRl FT 5 ^ / 45 C («, K,., Ä'af 5/02 FINLAND —FINLAND (21) PM: * nttlh «k« mu «—P * t« ot »N» eknlng 2201/73 (22) Hilc * ml * cloud - AiMttkninpdaf 11.07 * 73 * * (23) AlkupUvi — Glltlgh «t * d» g 11.07 * 73 (41) Tullut lulklMlul - Bllvlt offtntllg 20.01.71 *

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Patent * OCh rt | lltarityralMn Anittktn utlkgd och utl.tkriften publictrad 30.o6.8l (32) (33) (31) Pyydatty »tuelkaua —8« gird prior «19.07 * 72

Federal Republic of Germany-FÖrbundsrepubliken

Tyskland (DE) P 2235276.7 (71) Desovag-Bayer Holzschutz GmbH, Ross-Strasse 76, 1 Dusseldorf 32, Federal Republic of Germany-Förbundsrepubliken Tyak. iand (T) k) (72) Wolfgang Metzner, Kre f el d-Bo ckum, Heinz Bellmann, Diisseldorf-Oberkassel,

Willi Spettmann, Alpen-Veen, Federal Republic of Germany-Förbundsrepubliken Tyskland (DE) (7l) Oy Borenius & C: o Ab (5U) their ky 1 las.Ieutävessen näräntaminen -Sätt och anordning för impregnering och förbättring av impregneringsbar-heten av sägvirke ock kantskuret rent trävirke, särskilt · av svarimpreg-nerbara träslag och av ties tillverkade kons trukt ions del ar

The invention relates to a method for impregnating and improving the saturability of sawn timber and edged, clean timber, in particular hard-to-impregnate wood species and components made therefrom, by using wood preservatives or preservatives or other impregnating liquids in parallel or approximately parallel directions. staggered incisions or injections using a piercing device. The invention also relates to a device suitable for carrying out this method.

It is known in the art of wood protection technology to use the following mechanical methods of pretreatment of wood surfaces: 1. rotating needles (DE patent publication 241,659) are used for piercing round trees, in particular column trees. These needles are placed in a compression beam which descends into the stationary wood, 2. fixed needles or knives (DE patents 281,793, 282,359 and 1,936,270) are used which, when located in the guide, act on the wood. These methods have been specially developed for the pretreatment of sleepers.

2,59745 An improvement of this method is described in U.S. Pat. No. 1,646,955, according to which a continuous mode of operation can be achieved by using compression rollers with knives (current "Incising" mode), which is also used for pretreatment of columns, cf. Forest Products Journal, 1_7_, 33, 1 967).

3. The use of drills is proposed in DE Utility Model Publication 608,514, as well as in DE Patent 1,642,164, instead of needles or knives.

4. Circular saws, i.e. band saws, are used to cut timber transversely to the direction of the fibers (DE patent 509,303) or parallel to the direction of the fibers (DE patent 928,850).

The above methods and devices have all been developed with the aim of pre-preparing especially hard-to-impregnate wood species, such as spruce, Douglas spruce, oak, etc., as beams or masts by applying a deep-acting (15 ... 40 mm) pressure vessel method. To avoid damaging the tools during deep piercing, the workpiece must be at rest. The exception is the above-mentioned slitting machines, which allow feed speeds of about 5 to 30 m / min. In this case, however, in addition to piercing, surface damage to the wood also occurs due to the fact that the knives tear off the chips. Another disadvantage of this continuous method is that the different knives are attached to separate fastening devices of the press rolls, and that these knives must in each case be ground separately after they have been worn. After a long period of use of the knives, this separate grinding inevitably leads to variations in the length of these knives and thus to different penetration depths, which, however, according to the aim set here, adversely affects the even saturation of the wood with wood preservatives.

The object of the invention is to mechanically prefabricate sawn timber and edged clean timber, also planed, especially wood species and components made of them that are difficult to impregnate, by means of a punching device without tearing the surface so that by hand 59745, officially, eg the amounts of wood preservatives and preservatives required by DIN 68.800. Furthermore, firstly, the penetration depths must be uniform in order to achieve an approximately even distribution of the preservative in the impregnated areas of the wood, and secondly it should be possible to vary the perforation pattern (number of injections per unit area and penetration depth).

The invention solves the problem by forming punching grooves in a wooden surface with spaced b-stitches of length d, each of which is arranged in two staggered steps relative to each other, the distance between these staggered stitching planes being equal to or approximately equal, and one punching groove the centers of the injections are staggered to the left and right of the adjacent injection grooves between e / 2 or approximately e / 2, where e is the distance between the centers of the two injections equal to or approximately equal to the distance b, and thereafter or simultaneously in a manner known per se applying wood preservatives or preservatives or other impregnating fluids to the surface of the wood. According to the invention, the injection length d is then not equal to e / 2. A punching diagram as shown in Fig. 3 is obtained, in which two puncture planes E 1 and E 2 are formed from parallel, adjacent punching grooves at the same height (thought line running perpendicular to the longitudinal edge of the sawn timber), where the distance between the planes E 1 and E 2 is e / 2.

According to a preferred embodiment, all the piercing grooves are arranged in such a way that the injections of two adjacent piercing grooves are not located in steps of distance e / 2. If e / 2 = 0, all the injections are located in one piercing plane E 1, whereby the gaps a, b and d remain unchanged as described above.

According to the invention, it has further been found that this method for impregnating and improving the impregnability of sawn timber and edged clean timber, in particular hard-to-impregnate wood species and components made therefrom, by making incisions parallel to or approximately parallel to the wood fibers direction 4 59745, preferably realized using a punching device consisting of one or more punching units (Fig. 2), and each punching unit (Fig. 2) has sawtooth-like brushed piercing teeth 2 1, wherein the thickness of the spacers 5 and / or the distance between the piercing discs within the piercing unit is suitably equal. By means of suitable pulling or pressing devices based on spring, hydraulic or compressed air elements, the punching unit is pulled or pressed against the timber to be treated with sufficient force. By using several punching units at the same time, suitably 2 ... 4 punching units, it is possible to punch the upper and lower sides in one work step in connection with the boards, and also two side surfaces in the case of edged clean timber. The wooden surfaces of workpieces fed through a punching machine with suitable feeders known per se can be perforated (Fig. 3) so that in the next impregnation step according to DIN 52.175, e.g. -ainemäärä. According to a special embodiment, the punching units are at the same time made as feed units.

Depending on the embodiment of the machine, the piercing discs 1 can have an arbitrary diameter, this diameter being in particular in the range 12 ... 30 cm. However, punching discs belonging to the same punching unit must always have the same diameter in order to develop a uniform punching pattern. This even grinding is achieved with commercially available sawing machines.

The thickness of the piercing discs can be freely selected, depending on the desired width of the injections, in which case the thickness in particular is in the range of 1.5 ...

2.5 mm. The teeth of the piercing discs 2 can be shaped according to all available sawtooth shapes, as long as the post-grinding can be performed by means of conventional sawing machines.

In this case, for example, tip, nail or hook teeth and their variants can be used. piercing of planed timber is used in particular rabbet-toothing 2, wherein the lävistyskiekot rotate in the arrow shown direction, in other words, with respect to the saw blade position is 59 745 l) lävistyskiekkojen teeth oriented in the opposite way.

The tooth division t and the tooth height h (Fig. 1) as well as the shape of the tooth backs are freely silent. The tooth noble then determines the distance between the stitches b of each of the grooves 9 in the groove 9 of the workpiece, which may suitably be 1 0. . . 3 f> mm. The height of the tooth must be selected to be greater than the desired injection depth, in which case a height of 2 to 4 times the injection depth is especially used. The shape of the back of the tooth as well as the depth of the injection determine the length of the injection on the surface of the wood (Fig. 3). This injection must further be made in such a way that it has a workpiece at the beginning and end of the workpiece to expose the barrier to the workpiece in the best possible way, and e.g. nail hammacts are preferably suitable for this purpose. In order to achieve uniform saturation, it is advantageous to brush the pi-discs li, unpa.j I vigorously s i I en, so that within the framework of the piercing lysurari '1 μ i s to; t. en s i vuporrust uk s i a r (Fig. 3).

The perforation pattern according to Fig. 3 arrives at 11 am and is assembled into a perforation unit (Fig. /) Several. Punch the locks over the four axles 6 to use! i.ri st yski Ekko and 7 and tension screws and 8 as well as intermediate spacers S. The distance a between the later grooves :: the grooves 9 is then determined between s Ijaitsevis La spacers ta b, the diameter of which is smaller than that of the piercing discs. 1 diameter, and which are a bogie of a suitably strong material, es im. Of steel, aluminum, ri s t ivaneri uta. The thickness of the intermediate discs depends on the type of wood to be treated and its saturation, the desired absorption of the preservative and the type of preservative chosen. The distances between the stysur i en are. suitably 5 ... 20 mm.

In order to maintain the desired punching pattern during the treatment of the wood, fastening brackets are used in connection with the punching discs. Suitable for this purpose are e.g. perforations The grooves in the bore 3 of the shaft of the eco, into which the corresponding wedge of the shaft fits. If then the groove 4a is located on the radius r1 passing between the two hemp tips of the piercing disc, and the second groove äh is located on the radius r ,, which leads directly to the tooth tipsMi, is obtained by alternately placing 1 äv is 1 cough t (r ^ - ry - r ^ - r ^) akse 1 i L J. e injections por rastetu i. ks i. nä 11 de * τι from the perforation groove to the perforation between e / 7 (Fig. 3). In this case, there is a single 59745

O

whether all the punching discs are provided with both grooves (located in the radii r ^ and r) or whether half of the number of punching discs have grooves according to the radius r ^ and grooves according to the radius for the other half.

The preformulation described above is suitable according to the invention for all types of wood, especially in the case of species which are difficult to impregnate, for example spruce, Douglas spruce, oak or wood surfaces are largely hardwood to impregnate.

After this pre-treatment, the wood is impregnated with oily, oil-like or water-soluble wood preservatives, which, either alone or in combination, contain fungicides and insecticides, flame retardants and anti-swelling components, which can be either colorless or colored.

All known impregnation methods are suitable for impregnation, especially also in DIN 5? 126 said manual impregnation method.

According to a specific example of use, the procedure was as follows: 9U mm of edged planed pine wood goods (mainly heartwood) had to be impregnated with oily wood preservative. 1’äätyp Irinat was sealed with synthetic resin varnish. The desired average preservative consumption was 150 g / m 2.

Punching discs with a diameter of 25 mm, a thickness of 1.5 mm with nail-toothing, a tooth pitch t - 14 mm, tooth height h = 8 mm were used. All four surfaces were pierced. The distance between the punching grooves was 8, 12 and 15 mm, and the feed speed was 13 m / min. Four punching units were used. The following results were obtained when the timber was once fed through a shower hour (type TPU, trade name Solvay, Paris). The product "Xylamon Holzbau" was used as a wood preservative.

The results are shown in the following table.

7 59745

Experience Puncture- Punching- Puncture- Experiment cabinet- Wood swamping inine no depth groove density linden Consumption g / m? (mm) between (number c., · ... ·. .. · ....... Interval i ii- Medium Lm ri,. 7 n. 1.1UII in __ (rnm) _itu ) _________ 11 Comparison, without piercing 10 40.0 (13.4 96.0 12 5 8 7333 10 204.0 334.0 404.0 13 5 12 5133 10 150.0 196.0 273.0 1 4 3 1 2 51 3 3 1 0 1 5 9, 0 1 6 8, U 177.0 15 3 15 3666 10 124.0 146.5 168.0

In another example, 45 mm thick, planed 85 mm wide planks of spruce wood (mainly heartwood) had to be protected, in which case an oily wood preservative -.- dissolved with an average consumption of 150 g / nn had to be used.

The same perforations were used as in Example 1, but only both 185 mm wide surfaces were perforated with two perforations. I ä. In this case, the following career aids were obtained: results for wood preservation I 1 a "Xyla-mon HoInhau".

Test Puncture- Punching- Puncture- Test specimen- Wood bog jausa no so depth groove density leaf consumption g / ur (mm) (number v.

.... ......, Low- Middle Ln Sand paternity rate / ..... .....

,, back to the Moor ___ (mm) _mj _) _________ 21 Comparison, without piercing 10 41.4 50.0 69.4 2 2 5 1 2 51 3 3 5 1 3 7, 8 1 56, 8 1 78.8 23 3 1 2 51 3 3 5 1 1 7, 0 1 31, 8 1 45.1

Claims (7)

59745 8 1. A method for impregnating and improving the impregnability of sawn timber and edged, clean timber, in particular hard-to-impregnate wood species and components made from them, by using wood preservatives or preservatives or other impregnating fluids in parallel or approximately parallel to the wood fibers incisions, or injections by means of a piercing device, characterized in that piercing grooves are formed in the wood surface by spaced b injections of length d, each of which is arranged in two steps staggered relative to each other, the distance between these staggered stitching planes being equal or approximately equal, and the injection centers of one piercing groove are staggered between e / 2 or approximately e / 2 with respect to the adjacent grooves on the left and right, where e is the center of the two injection grooves. at a distance equal to or approximately equal to the distance b, and thereafter or simultaneously, in a manner known per se, wood preservatives or preservatives or other impregnating liquids are applied to the surface of the wood. Method according to Claim 1, characterized in that the inserts of two adjacent grooves are staggered relative to one another by a distance which is greater than or less than e / 2. Device for carrying out the method according to Claim 1 or 2, characterized in that it consists of one or more piercing units, each piercing unit being provided with sawtooth-like perforated piercing teeth (2) and interposed spacers (5) on a common shaft (6). perforating discs (1) fastened by means of clamping discs (7) and clamping screws (8), the thickness of the spacers (5) and / or the distance between the perforating discs (1) within the perforating unit being suitably equal. Device according to Claim 3, characterized in that each piercing disc (1) is arranged stepwise with respect to the adjacent piercing disc in half of the piercing tooth pitch t (= e / 2), the piercing discs being fastened to the common shaft by means of fastening devices. Mi * v · ***** '1 59745 Device according to Claim M, characterized in that the fastening devices (Ha, b) are arranged on the radius (r 1) leading to the tip of the toothing tooth and / or on the radius leading to the center of the tooth division (r 1) and are formed by a groove and a wedge. Device according to one of Claims 3 to 5, characterized in that the height h of the piercing teeth (?) Of the expansion discs (1) is 1.5 to 5 times, suitably 2. . . 4 times the injection depth. Device according to one of Claims 3 to 6, characterized in that the piercing unit (Fig. 2) is at the same time designed as a feed device and is connected to an impregnation device, in particular a shower sensor. Pat entkrav