FI81747B - Method and machine for continuous manufacture of kindling - Google Patents

Description

81 747

Method and machine for continuous fabrication of logs

The invention relates to a method and a machine for the continuous production of logs from trunk wood, in which method the wood 5 is pruned and a piece of trunk sawn to a certain size is fed to a flap making machine. The splitting method of almost all woodworking machines is based on hydraulically operated wedges or blades. In these methods, the work cycle includes stops and return movement, which significantly slows down the actual work.

It is an object of the present invention to provide a method and an apparatus for the continuous and efficient manufacture of logs. The characteristic features of the method according to the invention are set out in the appended claim 1 and the characteristic features of the corresponding wood burning machine 15 are set out in claim 3. According to the main principle of the invention high efficiency is achieved when the process is based on continuous progress. In addition, the quality of the product can be improved 20 because the cutting and splitting surfaces are smooth.

The splitting by sawing is most preferably performed so that after the first splitting the halves are separated and their splitting is performed on two lines. Another alternative is to press the split pieces 25 against each other, for example by means of rollers, and the resulting halves further into two parts 90e with respect to the first splitting. If the diameter of the wood is more than 15 cm, in the second stage, sawing the drying groove on both sides of the through-sawing is preferably used. In the following, the invention will be described with reference to the accompanying figures, which show an example of the invention.

Figure 1 shows a side view of the valve manufacturing line

Figure 2 shows the line of Figure 1 seen from above

35 Figure 3 shows a section from A to A in Figure 2

Figure 4 shows a section from B to B in Figure 2

Figure 5 shows a section from C to C in Figure 2

The valve making machine comprises a feed line leading to the first stage splitting-40 for the circular saw 5 and is divided into two

Claims (7)

A method for the continuous production of logs from 5 timber, in which method the wood is pruned and a sawn length (1) of a log sawed to a log making machine, characterized in that the log (1) is first cut, then the halves (1 ') are cut at least once. the tree trunk is cut into pieces of log (1 ") length at some stage in the 10 splitting process. Il 3 81 747 A method according to claim 1, characterized in that the diameter of the tree trunk to be split is identified and, according to a certain criterion, drying grooves are sawn in the fourth part 5 on the outer surfaces of the split or split logs. 2,81747 feed lines for second stage splitting circuits 12. The machine also includes a cutting and pruning device, which, however, is not shown in Figures 1 and 2. In this case, cutting is performed before splitting into log lengths (approx. 25-30 cm). The body pieces 1 cut from the cut-off 5 are pushed by the feed rollers 3 along the trough 2 in the vicinity of the splitting circle 5. At this point, they are placed under the pressure rollers 4, which push them through the circular saw 5. Figure 3 shows wedges 7 on both sides of the splitting circle 5, which turn the split halves into troughs 6, 10 leading to the second stage splitting circles 12. The split halves are initially conveyed by the feed rollers 8 below the trough until hal-15 reeds 12 before. The drying groove 11 and the second stage splitting saw 12 include height adjustment devices with which they can be lowered below the chute 6 when they are not in use. The machine also includes a sensor member for measuring the thickness of the body to be split, on the basis of which the drying groove-20 circular saw 11 and the second stage splitting saw 12 are controlled. Thin bodies are split only once, while body pieces thicker than a certain value are treated with a drying groove 11, which provides further drying grooves 25 in the split quarters, which otherwise improve the combustion properties of large logs. The split body halves 1 'are passed through a drying groove and a circular saw 12 by means of pressure rollers 9, after which the finished logs (1,1 ") are moved out of the machine by means of feed rollers 10. Patented suction A logging machine for carrying out the method according to claim 1, comprising wood frame feeders (3,4) and a cutting device for cutting the frame into pieces (1) of length 10 (1 "), characterized in that the logging machine comprises a first splitting saw (5) and an associated a wedge (7) for separating the body halves on two different feed lines and these feed lines include a second stage splitting circular saw (12). Logging machine according to Claim 3, characterized in that the axis of the first stage splitting saw (5) is arranged below the feed line and the feed line comprises lower feed rollers (3) and upper pressure rollers (4) for conveying substantially log-length body sections (1) to the splitting saw (12). through and divided into two different feed lines, from which the split body halves are guided at least partially along the trough (6) to the second stage splitting circular saw (12). 25 Wood burning machine according to claim 4, characterized in that the machine comprises a body diameter sensing member and an adjusting device, by means of which, in the case of bodies larger than a certain limit value, drying stage saw blades (11) are arranged in the vicinity of the second stage cutting grooves (11). on both sides of the through-cutting point. Woodworking machine according to claim 4 or 5, characterized in that said troughs (6) comprise grooves 35 through which the second stage splitting circular saws (12) and the drying grooving saw (11) are placed on the feed lines of the split body halves. 4,81747 Log machine according to Claim 4, 5 or 6, characterized in that the machine comprises pressure rollers (4, 9) placed above the feed chute (2,6), by means of which the body pieces are moved forward and through the circular saws (5, 11, 12).