FI97530B - Firewood-producing machine - Google Patents

Description

, 97530

MACHINE FOR MAKING VALVES

The invention relates to a machine for making logs from pruned trees. The machine treats the timber as bundles of several individual trees. The machine feeds, cuts and splits trees as separate processes.

Most commonly, the wood is fed to the logger's cutting device manually. However, a device (FI 67 319) is known in which the feeding takes place on a hydraulically movable platform. A device is also known (e.g. US 4,478,263) in which the feeding takes place by means of a belt conveyor. A device (FI 801 052) is also known, in which the wood is fed by means of a roll with projections and a control member, a type of solution used in chippers.

A major disadvantage of most feeders is that they are intended to feed individual trees and, in addition, the timber must be "fed" or placed separately in the feeder.

Timber cutting is most commonly done on existing machines with a circular saw blade, which is moved or moved against which the wood is cut. However, devices are known in which the cutting is performed by a blade driven by a hydraulic cylinder ....: (e.g. FI 67 319) or a chain saw (e.g. US 4,478,263). Tree ·. : can also be cut by squeezing it between two blades

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... * (E.g. FI 797 98). In general, logging is not a problem with logging machines.

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Timber splitting is most often based on hydraulically operated wedges or blades (e.g. US 4,478,263), • · ·: tapered screw with thread (e.g. FI 22 245), splitting wheels (e.g. FI 82 407) or hoe-like blade (e.g. FI 797 98). The problem with all of these devices is that they are designed for splitting 2,97530 individual trees, so the only way to increase work efficiency is to increase the speed of the process. This is preferably only possible with continuous devices (FI 82 407). For such a device, however, the trees must be arranged in a queue.

With the technique currently in use and presented above, the only possibility to increase the efficiency of making logs is to increase the speed of feeding, cutting and splitting wood or to strive for continuous progressive movement, as in one method (FI 817 47) where splitting is performed by sawing. It is also possible to increase the number of units performing each process (e.g. US 4,869,303), which is an inexpensive method. Even with these solutions, power is only part of what can be achieved by handling multiple trees simultaneously.

The best-known device for handling trees in bundles is disclosed in FI 67 319, which, however, has the disadvantage that the feeding and cutting is done by means of hydraulics, which in this device requires a return movement. This results in low work efficiency. In addition, the device does not have a splitting mechanism.

Current woodworking technology requires a lot of human labor. In this case, work efficiency is low, work is heavy and work safety is poor.

• *, ·. : With the machine according to the invention, the disadvantages of the above • · * .1. * Can be remedied by machining the trees ψ · * ..! as bundles formed by several individual trees. Work * · ”becomes lighter, occupational safety is improved and efficiency is 5-20 times. The machine is a combination of some of the already known \ i .: feeding, cutting and splitting techniques. Valve length * i »; :; and the thickness of the wood to be split can be adjusted. In order to achieve these advantages, the machine according to the invention is characterized by what is stated in the claims.

3,97530

Figure 1 shows an overview of the wood chipper

Figure 2 shows the cutting device

Figure 3 shows the splitting device from the end

Figure 4 shows a combined cutting and splitting device

The logging machine comprises a conveyor-type feeder (1) for feeding wood to a cutting device (2), which in the embodiment shown in Fig. 1 is connected to a splitting device (3).

The cutting is performed by a device according to Fig. 2, which comprises a fixed blade (18) and a blade (17) rotating around a center point (16). Cutting is done by squeezing a bundle of wood between the blades. At point b, the blade (17) begins to compress the bundle of wood fed into the device above the center point (16). At c, more than half of the bundle is broken and at a, the entire bundle is broken and the feeding of a new bundle can be started. The curved shape of the blade allows the cutting to take place with a cutting movement, so that the required force is not as great as when cutting perpendicularly. Only at the very end are the last trees pressed directly against the fixed blade (18). In Fig. 2, a blade portion 19 is not drawn on the rotating blades to clarify the image. To reduce manufacturing costs, the rotating and fixed blades are exactly the same.

Since the cutting of the last trees takes place lower than the supply of the \: trees, this causes a force on the * «· end of the feeder, the force of which the end of the feeder must be flexible to receive, for example by means of springs. To prevent the last trees in the bundle from “tipping over”, a printing device can be mounted at the end of the feeder or the rotating blade (17) includes a stand on which the trees protrude. Owls f I »:; the length is adjusted by a movable counter-plate on which, when collided, the trees stop the movement of the feeder (1).

4 97530 Logs are split into logs by means of a device (Fig. 3) comprising a fixed outer drum (20) and a rotating inner drum (24). The outer drum has one or more slitting openings (21). The splitting opening is most preferably formed of a shaped splitting steel (22) and a guide (23). By changing the distance of the guide from the next steel, the size of the log is adjusted. The small owl goes completely out of the opening and the opening is cut off from the larger owl. The part of the owl remaining inside the drum exits the next opening or later from some opening. The actual splitting movement is performed by a rotating inner drum (24) with one or more feed openings (25) from which the log enters the splitting opening (21). The most preferably shaped edge of the feed opening, the log presser (26), presses against the wood splitting blade (22).

To ensure that the trees remain straight, the drum may have an adjustable rear wall, ridges (27) between the feed openings and / or, preferably, a second inner drum (28) which closes the feed openings (25) to prevent the trees from dripping into the split opening.

In the embodiment shown in Figures 1 and 4, the cutting device is connected to the splitting device so that the fixed blade (18) is attached to the fixed drum (20) and the rotating blade (17) to the rotating inner drum (24) without the need to move trees from the cutting device to the splitting device. Furthermore, the • 1 · • · · · 'application has an oil chamber mounted on the machine frame and a • · t • · ·' pump (7), the pressure generated by which drives the loader and the feeder. For the splitting device, the force • · · is most preferably transmitted mechanically. The machine also includes • · ·: T: a conveyor (6) into which the trees drop. transversely from the splitting device (3), which makes it possible to • · · preferably bundle or stack the logs tightly.

Claims (4)

A firewood producing machine comprising a feeding device (1), a cutting device (2) for cutting tree trunks into clamps and a splitting device (3) for splitting the clamps into sticks and in which the machine cutting device (2) consists of a the rotary cutter (17) formed by the feeding device (1) and a stationary counter cutter (18) and in which the splitting device comprises a fixed splitting blade (22) and a clamping press (26), characterized in that the splitting device comprises a rotating inner drum (24) and a stationary outer drum (20), the inner drum (24) having feed apertures (25) and the outer drum (20) having multiple splitting blades (22) and in which each feed opening edge (26) forms said clamping presses which press it cut off the clamp against the splitting blade (22) whose side forms a guide (23) which, together with the following blade, determines the largest dimension of the clamp passing through. Machine according to claim 1, characterized in that cams for directing the clamps in the feeding direction are provided between the feed drum (24) of the inner drum (24). Machine according to Claim 1, characterized in that a drum (28) is provided inside the inner drum (28) with which the 1 · feed openings (25) can be closed. • · · « Machine according to claim 1, characterized in that the cutting insert (18) of the cutting device (2) is arranged at the outer drum (20) and the rotating insert (17) at. the inner drum (24). • · ·