FI122058B - Cutting System - Google Patents

Description

CUTTING EQUIPMENT

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Field of the Invention 5

The invention relates to an apparatus for cutting sawn pieces (saws).

BACKGROUND AND PRIOR ART 10 One of the most important aspects of lumbering is stalling. Buyers of lumber are placing even greater demands on, among other things. the length of the tracks. Breaking precision combined with high capacity sets high hardware requirements.

5 15 One of the available break solutions is the so called. a trimmer to perform a modular break of pieces.

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The trimmer is hardware that usually has a large number of trimming saws arranged in parallel. Modular sectioning means that the lumber pieces kat-20 are banded to constant lengths comprising a fixed multiple of a constant length, usually 300 mm, although multiples of another length are possible. The cutting is performed by an automated control with a specific cutting saw, which is placed on top of the piece of wood, which cuts it while it is being passed transversely.

EP-B1-1150812 discloses a hydraulic cylinder roller | - chamfered with cutting devices having a plurality of adjacent cutting saws, each of which is controlled to perform cutting according to the given control. Ko.

The patent states that the saw is lowered onto a piece of wood and raised to its upper position 30 by means of separate devices, thereby making the equipment multi-x curved and expensive.

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S In the prior art, the lowering and lifting speed (slowness) of the saw causes problems and limits the capacity of the plant, o o C \ J 00 j i | 2

SUMMARY OF THE INVENTION The object of the present invention is to eliminate the disadvantages of the prior art and to provide an entirely new type of trimmer.

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The invention is based on the blade arm being forcibly guided in the sawing step in the apparatus according to the invention, whereby it is forced to turn i down for sawing and then up to the upper position by mechanical force guiding apparatus as defined in the appended claims, especially claim 1.

This makes the equipment extremely reliable and fast, making it suitable for cutting even at higher transport speeds.

15 Brief Description of the Figures [·

In the following, the invention will be described in more detail by way of example with reference to the accompanying drawing, in which Fig. 1 is a simplified side view of the cutting apparatus according to the invention and Fig. 2 is a top view.

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DESCRIPTION OF THE PREFERRED EMBODIMENTS r

Fig. 1 is a side elevational view of a crank-driven, forced sawmill (saw) trimmer according to the invention with a plurality of 25 parallel cutting saws 10 for one saw and its actuator.

- The lumber is transported by means of a transverse conveyor 11 having conveyor chains and cavities 1 arranged therethrough, past the sawing device which then cuts 5 g of the desired position of the saw according to the instructions of the control system (not shown) x again.

tr O-S The module performs modular cutting, which means that

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g The beads 5 are cut to standard lengths, usually 300 mm, or individually adjusted to 35 special lengths. Thus, cutting is always performed with a particular cutting saw from parallel mounted cutting saws, which is thus lowered onto the piece of wood 3 and cuts it while the lumber is transported past the saw in the transverse direction.

The collider conveyor 11 is mechanically or electrically synchronized with a pak-5 co-steering apparatus having a disk 2 rotatably synchronous with the conveyor (perpendicular to axis 12) and having a crank 13 pivoted on its outer periphery. auxiliary arm 3 mounted on the main shaft 12 together with the actual blade arm 4.

10 The forced steering system 2 constantly moves the auxiliary arm 3 at the intervals between the recesses.

When the control system becomes aware that the trimmer blade 4 must be lowered and cut off. saw 5 (e.g., board), engages the blade arm at the upper palm of the palm with actuator 14 movable mechanical pin 6 or electrically, e.g., 15 magnet, attached to the auxiliary arm 3, which in the next rotation of the palm presses the trimmer blade down The next time the auxiliary arm is at the upper dead center position, remove the blade arm from the auxiliary arm and lock it with the same pin in the fixed position at the "" home seat "7 on the other side of the auxiliary arm to await the next sawing.

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Thus, in the apparatus, the crank drive coupled to the conveyor moves the auxiliary arm continuously and the blade arm is engaged in the movement of the auxiliary arm when a sawing motion is required. Otherwise, the blade arm is locked in its home position. The locking is done mechanically or electrically.

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It will be apparent to one skilled in the art that various embodiments of the invention are not limited solely to the above example, but may vary within the scope of the following claims. The steering apparatus may also be of a different type, for example, the blade arm may extend beyond the main shaft towards the ethylene 30, and so the thrust control may also be provided with the extension arm at the end x of the blade shaft. through.

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Claims (5)

Cutting apparatus for sawing pieces (saws 5) having adjacent rotatable saws (10) arranged on a common axis, wherein each cutting saw is connected to a sharp point (4) pivotally mounted on a common axis and a guide for each saw is provided -to guide the arm and the saw so that when transporting the lumber pieces by means of a transverse conveyor (11), it cuts the lumber-10 pieces (5) at the desired position by lowering the desired saw to the lumber and lowering the lumber accordingly the guiding device is a forced mechanical guiding device (2, 13) which can be connected sharply so that the blade arm, at least during the sawing step, runs a forced guided continuous path for lowering the saw for cutting and lifting the saw. afterwards, characterized in that the control apparatus coupled to the conveyor 20 is adapted to move the auxiliary arm continuously and the blade arm can be actuated during movement of the auxiliary arm, and otherwise the blade arm is locked in its basic position, preferably in its upper position. An apparatus according to claim 1, characterized in that the control apparatus is a crank apparatus. | δ Apparatus according to claim 1 or 2, characterized in that it comprises a disc (2) rotatable in synchronization with the conveyor CV (ε) and a crank (13) pivotally mounted on its outer periphery, which is further articulated on the auxiliary arm (3), which is mounted on the main shaft (12) together with the actual blade shaft (4). X £ Apparatus according to claim 1, 2 or 3, characterized in that in the control apparatus the blade shaft can continue to extend beyond the main shaft, and the control of the forced operation of the blade shaft can also be arranged in connection with the extension shaft at the end of the blade shaft. 5. Apparatus according to claim 1, 2 or 3, characterized in that, in addition to the crank drive, the control apparatus can also be controlled by means of a rotatable baffle with a groove. . ', CD 0 r ^ CC Q_ o> CD C \ J CD O) o o C \ J.