FI51459C - FOERFARANDE OCH ANORDNING FOER DOSERING AV SAOGAT TRAEVIRKE - Google Patents

Description

I5SFH [B] (11) ANNOUNCEMENT CI4CQ

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(51) Κν. ^,. / ΙΜ.Ο, .Ι B 65 G 4-7 / 08 FINLAND - FINLAND (21) Patent application - Patentansöknlng 750722 (22) Application date - Ansöknlngsdag 13.03.75 * '(23) Starting date - Glltighetsdag 15 »03 · 75 (41) Become public - Bllvlt offentllg ^ rjg

Patent and Registration Board ....

1 (44) Date of dispatch and date of issue. -

Patent * och registerstyrelsen Ansökan utlagd och utl.skriften publicerad 30.09.76 (32) (33) (31) Requested privilege— Begärd prlorltet (71) Ky Rysti & Co Kb, Hietalahdenkatu 8 A, 00l80 Helsinki 18, Finland-Finland (SF ) (72) Alpo Rysti, Frisansintie 22, 022 ^ 0 Frisans, Finland-Finland (SF) (7 ^ 0 Forssen & Salomaa Oy (5 * 0 Method and device for dosing sawn timber - Förfarande och anordning för dosering av sagat trävirke

The invention relates to a method for dispensing sawn timber transversely to individual conveyors, in which method the timber is conveyed by gravity and / or other similarly acting force to be dispensed as a mat and in which method the timber is used to stop, past and / or over which the timber is mainly lifted.

The invention also relates to a device for carrying out the method defined above.

As the capacity of sawn timber sorting machines increases, the dosing of sawn timber pieces, i.e. their individual feeding to the sorting machine at regular intervals, has become a limiting factor for the entire machinery. This disadvantage has also manifested itself in the timber mat to be dispensed.

Several different timber dispensing devices are already known, in which the timber is separated from the timber mat. With regard to the state of the art, reference is made to Finnish Patent No. 43,564 and Finnish Patent No. 325,299. Both devices according to these patents have a movable barrier which is lowered during dosing. Since in both of these devices the wood also moves in a mainly horizontal direction during dosing, this limits the speed of dosing. Finnish patent 48 * 369 discloses an efficient dispenser for pieces of timber of different widths, but this device is not well suited for planed timber, for example, because practice has shown that gripping members must be provided with spikes that break the planing surface.

When dosing icy, small or planed timber at high speed, the most efficient method of dosing has proven to be methods and equipment for dosing timber by lifting them from the dosing mat, as close successive lifting rows can be used otherwise peaceful.

A disadvantage of the known dosing method described above has been that the friction between the body to be dispensed and the body to be dispensed is so high that when the body is dispensed the next piece turns or otherwise moves out of position and causes dosing malfunction, which can interrupt the entire production line for a significant time.

Efforts have been made to avoid this disadvantage by placing abutments on the pieces of timber to be dispensed close to their upper surface, which in turn creates additional structures which in turn cause disturbances, especially with the wrong pieces of timber.

In order to avoid the above-mentioned drawbacks, the method of the invention is mainly characterized in that the stopper is moved in front of the synchronously dispensed piece of timber to release the lumber so that a gap or slack is created between the dispensed and the next piece of timber and the stopper is then returned to its starting position.

The device according to the invention, in turn, is mainly characterized in that the device comprises a power device, such as a cylinder, a stop arm or arms used back and forth by said power device, and that the device further comprises a carriage or the like in connection with which said power devices and stop arms are movable. according to the width of the pieces of timber to be dispensed into different positions.

3 51459

The invention will be described in detail with reference to an embodiment of the invention shown in the figures of the accompanying drawing, to which the invention is in no way limited.

Figure 1 shows a side view of a dispensing device according to the invention in an operating step in which the timber mat is fixedly against the stopper.

Fig. 2 shows a side view of a part of the device according to Fig. 1 in the second stage of operation in which the stopper is released.

According to Figure 1, the pieces of timber 11 to be fed for dispensing are on a surface inclined against the side by gravity. At the end of Finna 1 there are special stops according to the invention, the structure and operation of which are explained in more detail below. Near the end of the surface 1 there is a conveyor formed by at least two spaced apart flexible strips or chains 5, which are guided along a suitably shaped track by means of swivel wheels 17 and possibly sliding guides (not shown). Attached to the strips or chains 5 at intervals is a pivotable gripping arm a 7 »which are double-arm lever arms, the support point of which is a pivot point 14, where the gripping arms 7 are connected to conveyor belts 3» used synchronously with the sorting conveyor 9 or other conveyor 16. Grasping arm 7 The second lever arm performs the pick-up, support and delivery of the lumber pieces to be dispensed to the sorting conveyor 9 and the second lever arm controls the gripping arm 7 via the roller 15. There are, of course, at least two gripping arms 7 spaced apart for each piece of lumber. The rotating roller 13 or other similar device of the sorting conveyor 9 is conventional and the purpose is to dispense the pieces 11 one by one and at regular intervals between the grippers 12 of the sorting conveyor 9 for further transport. Above the roller track, no special lifting retainer is needed for reasons that will become clear later.

The conveyor belts or chains 3 according to Fig. 1 can be replaced by a drum, flanges or the like operated synchronously with the sorting conveyor 9, on the circumference of which pivot arms or other members performing a similar function are rotatably attached at points corresponding to the articulation points 14.

In the application of the invention, which will be described in more detail later, it is advantageous that the gripping arms 7a to be dispensed or at least their side facing the timber piece 11 to be met meet the timber conveyor body 11a substantially parallel to the lower surface of the body 11a, whereby the body 11a, 11b 7 support during dosing. In addition, under the action of the curved guides 8 and rollers, the gripper arms 7 are most preferably guided so that the gripper arms 7c leave the piece 11c on the sorting conveyor 9 parallel to its plane (Fig. 1). Thus, the pieces of sawn timber 11 need not be turned at all during dosing and the pieces 11 can be moved in the most advantageous position for further transport on the sorting conveyor 9,

The timber mat is fed on a downwardly extending surface 1, where, for example, rollers can be used to help slip. According to the invention, the stopper 20 is moved synchronously with the dispenser by a cylinder 22 connected to an angle lever 20,21, which in turn is articulated to a carriage 26 by a pin 23. The corresponding articulation pin of the cylinder 22 is indicated by the number 24. to the position determined by the width of the For this purpose, the carriage 26 is provided with rollers 27 which are connected to the guides 23. For said transfer of the carriage there is a screw-nut fit 28,29 ·

In Figure 1, the adjacent pieces of timber are fixedly against each other and the last against the stopper 20. In Figure 2, the stopper 20 is released or moved forward just before the arm 7a meets the body 11a from below. Thus, a gap h1 is formed between the body 11a to be dispensed and the body to be dispensed. A gap 4 can also be formed at the next boundary point, however, so that Δ 1> Δ ^ ... Thus, the basic idea of the invention is to take advantage of the phenomenon that mainly , due to the high speed of dispensing, a visible gap A?

Thus, the method of the invention is characterized by the steps of moving the stopper 20 just before the dispensing step of the piece of wood so that the body 11a to be dispensed disengages the stopper and the body to be dispensed moves forward, gaining a gap A return to its delivery before the next piece of timber has moved to or over the dosing station. As stated, the invention is based on the finding that when the timber mat is released, the mat as a whole does not move simultaneously.

Claims (4)

5 51459 to Taan, the first paragraph in it moves first. This phenomenon is clearly noticeable when fed from a roller track. Also, when fed with a smooth chain or the like, a play is created between the first and the next kappa, so that the invention is not limited solely to the supply of gravity to its non-timber goods. The method and device of the invention provide an obvious advantage, namely that said gap or "looseness" prevents the body following the dispensed body 11a from turning or otherwise adversely changing position due to lifting or moving of the dispensed body. In addition, said stopper 20 has time to return to its initial position before the next piece has moved to the dosing station. The invention is in no way narrowly limited to the application example described above, but its various details may vary quite widely within the scope of the following claims. A method for dispensing sawn timber transversely to individual conveyors (9), the method comprising transferring the timber by gravity and / or a similarly acting force to be dispensed as a mat and comprising using a timber stopper (20) past and / or over which the timber is mainly lifted, characterized in that the stopper (20) is moved synchronously in front of the timber piece (11a) to be dispensed to release the timber so that a gap (Δ1) or slack is created between the piece (11a) to be dispensed and the next piece of wood, and the stopper is then returned to its starting position. A method according to claim 1, characterized in that the stop (20) is rotated back and forth synchronously with the dosing in front of the timber mat about an axis (25) which is substantially parallel to the timber pieces to be dispensed. 6 51459 Device for carrying out the method according to claim 1 or 2, characterized in that the device comprises a power device, such as a cylinder (22), for stopping the arm or arms (20) reciprocated by said power device (22) and further comprising a carriage (26). ) or the like, in connection with which said power units (22) and stop arms (20) are placed and which can be moved to different positions according to the width of the pieces of timber to be dispensed. LED te according to claim 3, characterized in that the cylinder (22) acting as a power device and the stop arms (20, 21) are articulated (24, respectively 23) to said to one (26) arranged on the guides (25) of the rollers (27). ) on a screwdriver (28,29) or similar for transfer.