FI99098C - Equipment for transporting heart goods and separating side boards - Google Patents

Description

99098

EQUIPMENT FOR THE CARRIAGE OF HEART GOODS AND THE SEPARATION OF SIDE BOARDS

The present invention relates to an apparatus according to the preamble 5 of claim 1 for transporting core goods and separating side boards in a sawmill.

After sawing the side boards, the core material is moved by chain conveyors. To separate the sideboards from the core goods 10, elongate, straight separation plates (i.e., separation knives) are now used, which are placed on each side of the core goods so that the core goods pass in question. between the baffles and the sideboards on the outside of the baffles.

15 Logs are often not straight but curved. When it is desired to maximize the yield of the core product, the core product is sawn in an arc. Especially in arc sawing, the core goods are easily stuck in the current equipment due to their curved shape. between the straight separating plates 20, causing the conveyor to stop working and possibly to break the separating equipment. The side boards can also be caught between the knife and the heart item. Another disadvantage of the current separation equipment is that the adjusting the separator plates for different cardiac widths-25 is very cumbersome. This is particularly troublesome in the variable-set case, where the width of the heart goods changes even at successive widths of the heart goods.

The object of the present invention is to obviate the drawbacks of the prior art 30 and to provide an apparatus capable of effortlessly transporting curved and variable-width core goods and separating side boards from the core goods without interruptions of use and the additional costs involved.

Characteristic features of the apparatus according to the invention are set out in the appended claims.

With the solution according to the invention, it is possible to decisively improve the transport of curved core goods in particular and the separation of the side boards from them. Once the edges of the transport base have been chamfered in accordance with the invention in order to separate the side boards, there is no longer a risk of the core material getting stuck. In addition, thanks to the width adjustment of the transport base, it is easy to take into account the variation of the width of the core goods, thanks to the one-to-10 times width adjustment of the width of the base. The width-like elasticity of the upper roller results in an even more gentle handling of the core material. In addition, the sloping edge of the transport platform makes it easier to separate the boards in the case of icy timber. The solution according to the invention achieves efficient and economical operation, in particular because the apparatus operates continuously, since no lever arm or the like needs to be moved at a single piece of core material.

In the following, the invention will be described in more detail by means of an exemplary example with reference to the accompanying drawings, in which

Figure 1 shows an apparatus according to the invention.

Figure 2 shows the conveyor in cross section.

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Figure 3 shows a cross section of the cola.

Figure 1 shows how only the core goods 2 and the side boards 3 are sawn with a circular saw 1, which, after sawing 30, are separated from the core goods according to the invention. After sawing, the core material 2 is supported from the side by support rollers 4 and transported by a conveyor.

The conveyor has frame beams 5 and 6 both above and below 3 99098. Transverse cavities 7 run along the lower frame beams 6, on which the core goods 2 are transported. The core material 2 is supported from above by upper support rollers 8, which are fastened to the upper beam 5 by forks 5. The side boards 3 are transported away by a roller conveyor 10.

As shown above, the conveyor has transverse recesses 7 (Fig. 2), which are metal tubes with a rectangular cross-section of 10. The ends 11 of the pockets 7 are chamfered downwards, and the core goods 2 pass over the flat horizontal upper edge 12 of the pockets 7 on a welded or otherwise attached upper edge-wide wear piece 21, which thus forms the base for transporting the core goods. The wear piece 21 15 is a strip a few mm high, which is considerably more wear-resistant than other parts of the cola, such as wear steel or spring steel. In this way, wear on the horizontal part of the cavity 7 can be prevented. As a result of the wear, the width of the horizontal part of the cavity could increase, which worsens the separation of the board, since some of the side boards can then remain on the conveyor.

The conveyor has a chain drive with two adjacent chains 13, 13 '. Due to the variation in the width 25 of the core article 2, the width of the transport base formed by the collar 7 can be adjusted. The edge of the core article 2 thus always runs at the edge of the straight part 12, whereby the side boards 3 get on the sloping part 11 and then fall onto the side guide roller conveyor 10.

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The platform width adjustment is performed as follows. Each chain always carries every other cavity 7, 7 '(7' is shown in broken lines). The edge between the straight part 12 and the oblique part 11 of the second strip is adjusted to run flush with the right edge of the core article 99098 4 and every other left. The adjustment takes place by means of a reaction rod 14, 14 'fastened to each chain drive via the fastening part 15, 15', which can be moved in the transverse direction of the conveyor. At the same time, the position of the cola in the transverse direction of the conveyor and at the same time the width of the conveyor base can be adjusted to correspond to the width of the core goods. The reaction rods 14, 14 'are moved simultaneously, for example by means of a common drive shaft, so that the base widens or narrows at both edges to correspond to the desired width 10. The length of the flat edge of the cola must then be smaller than the width of the core article 2, as shown in Figure 2.

For suspension above the core article 2, a support roller 8 (top sectioned in the figure) 15 is arranged on the fork 9, which rotates on a shaft 16. A sleeve 17 is placed at both ends of the shaft and a compression spring 18 is placed on it, so that the support roller can spring laterally. The support roll 8 has the shape of a truncated cone in the cross-section of the roll surface, whereby pieces of core goods of different widths can be conveyed supported by the support roll when contact points occur at different points in the cone depending on the width of the core goods. Due to the lateral elasticity, the support roll also supports the core goods 2 sawn into a curved shape. The support roll 20 can also be without a conical shape.

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The front edge 19 of the cavity is also chamfered to widen downwards according to Fig. 3, whereby the rear edge of the core piece does not stick to the front of the cavity and interrupts the operation of the conveyor.

It will be apparent to those skilled in the art that the various embodiments of the invention are not limited to the example set forth above, but may vary within the scope of the claims set forth below.

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Claims (7)

Device for transporting core timber (2) and separating side boards (3) in a sawmill for side boards, comprising a shaver (7.7 ') conveyor for transporting the core timber, which shavings (7.7') ) is provided with a substantially horizontal straight upper edge (12), characterized in that the end (11) of the shaving (7,7 ') which corresponds to the edge (11) of the core (2) is beveled down to allow separation of the side boards (3) from the core , that the width of the transport substrate can be adjusted to at least substantially correspond to the width of the core (2) by adjusting the position or length of the shavings (7.7 ') in the transverse direction of the conveyor, and that a wear bit (21) is attached to the upper edge (12). ) of substantially tougher material than the other material of the shaving which is at the width at most as wide as the upper edge (12), and which forms the transport base of the core. 2. Device according to claim 1, characterized in that the transport substrate consists of successive shavers, one part (7) of which forms one edge of the transport substrate and one part (7 ') of it, and that the width of the transport substrate is adjusted with control elements ( 14, 14 ') which are connected to each of the edges of the edge and adjust their position in the transverse direction of the conveyor. 30 Device according to claim 2, characterized in that the even upper edge (12) of the shavings (7,7 ') is shorter than the width of the core. 99098 8 4. Apparatus according to claim 1, characterized in that it comprises suspended support rollers (8,19) suspended in a suspension part (9), of which at least part has a conical cross-section for beams or logs of different widths. 5 Device according to claim 4, characterized in that the lateral support rollers are elastically suspended in the suspension part (9). Device according to Claim 1, characterized in that the leading edge (19) of the shavings (7,7 ') is bevelled so that it is widened down-tight. 1 UM ill I> I 41