JPS5847330B2 - wood stripping device - Google Patents

Description

[Detailed Description of the Invention] Conventionally, a peeling device that peels a log by relatively moving it in the longitudinal direction and the circumferential direction while pressing a peeling rotor having a large number of peeling blades against the circumferential surface of the log is called a peeling rotor. If the relative movement in the longitudinal direction between the log and the log stops or becomes extremely small in young cases, the peeling rotor will only move relative to the log in the circumferential direction at a substantially constant position on the log, and the peeling blade will scrape off the wood in that area, causing significant damage. There was a drawback.

The present invention prevents the peeling blade of the peeling rotor from biting into the woody part of the log even if the relative movement between the peeling rotor and the log (in the log length direction) stops and only the peeling rotor rotates around the log. The object of the present invention is to provide a wood peeling device in which a number of peeling blades protrudingly provided at intervals in the circumferential direction are pressed against the outer periphery of a log, and the peeling rotor is pressed against the outer periphery of a log. In a peeling device that peels the log while relatively moving it in the length direction and the circumferential direction, a circumferential protrusion is provided between the peeling blades of the peeling rotor to limit the biting depth of the peeling blade. It is characterized by this.

The embodiment shown in the drawings will be described below. Reference numeral 1 denotes a ring that is guided by a gate-shaped machine frame 1a, moves up and down together with a holding frame 1b, and rotates around a log inserted into a center hole, and has a peeling rotor at its tip. A plurality of swinging arms 4 are installed in a radial manner, and each peeling rotary body 2 is forcibly driven. Ori,
In front and behind the ring 1, there is provided a transfer device consisting of a chain conveyor 6 and rollers 7 that move up and down in opposite directions, similar to the conventional one.

As shown in FIGS. 3 and 4, the peeling rotary body 2 has a peeling blade 2b formed of protrusions on the outer periphery of the rotary body 2a.
The lead angle of the skinning blade 2b is appropriately selected between 0 and 45 degrees, but in this embodiment, the lead angle is 45 degrees. degree.

Further, a skinning blade 2b is provided on the feeding side side of the skinning rotary body 2.
Multiple arc-shaped protrusions 9 longer than the pinch of...
... and the concave portion between those protrusions 9...
. . . are provided, and the skin cutting pieces 8 shown in Fig. 5 are formed in the recesses .
..., inserting a bolt into the hole and screwing and tightening it into the screw hole of the peeling rotor 2, the skin cutting piece 8...
... is fixed to the peeling rotary body 2, and the locking piece protruding from the end of the skin cutting piece 8 engages with the outer circumferential surface and the inner circumferential surface of the protruding strip 9 to cut the skin. The projection piece 8 is prevented from rotating due to bark cutting resistance.

Furthermore, as shown in FIG. 3, the outer end of the skin cutting piece 8 is slightly lower than the skin peeling blade 2b in front view, and in side view, as shown in FIG. This protrusion cuts the bark connected to the unreached part.

Further, a donut-shaped disk 10 whose outer peripheral surface is lower than the skinning blade 2b by, for example, 2 to 10 mm (2 to 37n1rt in the illustrated example) is fixed to the outer peripheral side of the delivery side side of the skinning rotary body 2 by screws. There is.

FIG. 6 shows a peeling rotary body with a lead angle of 0. In this example, even if the disc 10 is attached to the feed side end face of the peeling rotary body 2 as shown, It may be provided on the sending side as in the example.

FIG. 7 shows rotating bodies 2a, 2a each having approximately 1/2 width of the peeling rotating body 2.
This figure shows a peeling rotary body 2 constructed by interposing a disk 10 whose outer periphery is 2 to 3 degrees lower than the peeling blade 2b in the same manner as in the above embodiment, and by tightening and fixing the three parts together with bolts. The lead directions of the left and right peeling blades 2b of the disk 10 are opposite.

Next, in the embodiment shown in Figs. 1 to 4, the log is sent into the center hole of the ring 1 by the transfer device, and the swinging arm 4 is swung by the air cylinder to form the peeling rotary body. 2 is pressed against the outer peripheral surface of the log, the log is transported at a constant speed, and the peeling rotary body 2 rotates on its axis and revolves around the log together with the ring 1 to peel the log.

At this time, since the fibers of the bark of cedar and cypress are strong, the peeled bark tries to wrap around the log and the bark stripping rotary body 2, but the bark cutting piece 8 cuts it short.

However, for logs whose bark is brittle and easily fragments, the bark cutting pieces 8 may be removed.

When the chain conveyor 6 and the rollers 7 slip and the logs are not transferred and stop, the peeling rotary body 2...
...... revolves around its axis while rotating at a fixed position.

In other words, the peeling rotary body 2--... tries to further peel the part where the peeling has been completed, but because the disk 10 comes into contact with the outer peripheral surface of the log, the peeling rotary body 2--... No scraping of woody parts.

In addition, if the wood part of the log is soft, it is easy to damage the wood part even if the transportation is normal.
Since the amount of b being blown into the tree is limited, only the bark can be removed accurately.

Next, another embodiment of the present invention will be described with reference to FIG. 8. Reference numeral 20 denotes a pair of front and rear wood grips, which penetrate into the end of the log and rotate.・ is the same as the previous embodiment, and is pivotally supported at the lower ends of a pair of left and right swinging arms suspended from the gate frame, and is forcibly driven to rotate by an appropriate transmission mechanism, and the circumferential surface of the log The log is in pressure contact with the log, and the log is held in the wooden grip 20 and rotated and moved in the length direction, or the log is rotated at a fixed position and the gate frame is moved in the length direction of the log. Peel off the skin.

In this embodiment as well, the disk 10 functions in exactly the same way as in the previous embodiment.

Incidentally, the purpose of the disk 10 can also be achieved by welding arc-shaped protrusions in the circumferential direction between the respective peeling blades 2b, 2b.

As described above, the present invention presses a peeling rotor having a large number of peeling blades projecting at intervals in the circumferential direction onto the outer periphery of a log, and the peeling rotor is attached in the longitudinal direction and the circumferential direction of the log. In the peeling device that peels the skin while moving relative to each other, the peeling blade of the peeling rotor is provided with a circumferential protrusion that limits the biting depth.
Even if the transportation of the log is stopped due to slipping of the transfer device and the skinning rotary body acts on the same location of the log many times, the biting of the skinning blade is limited by the ridges and the wood will not be scraped.

In addition, when debarking a log with a soft main body, the woody part is likely to be damaged even if the relative movement in the length direction between the log and the debarking rotor is normal, but the protrusions limit the biting of the debarking blade. Therefore, it is possible to perform smooth peeling while preventing damage to the woody parts.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which FIG. 1 is a front view of the skinning section of the ring barker, FIG. 2 is a side view of the transfer device, FIG. 3 is a front view of the skinning rotary body, and FIG. Figure 4 is a partially cutaway side view of the same as above, Figure 5 is a front view of the skin incision, and Figure 6 is a front view of the skin incision piece.
7 and 7 are side views of other embodiments of the peeling rotary body, and FIG.
The figure is a side view of another embodiment of the peeling device. 1... Ring, 2... Stripping rotating body, 2
b... skinning blade, 10... disc.

Claims (1)

[Claims] 1. A peeling rotary body having a number of peeling blades protruding at intervals in the circumferential direction is brought into pressure contact with the outer periphery of the log, and the peeling rotary body is peeled while relatively moving in the lengthwise direction and the circumferential direction of the log. 1. A wood stripping device, characterized in that a circumferential protrusion is provided between the stripping blades of the stripping rotary body to limit the biting depth of the peeling blades.