JPS588489Y2 - drum coverer - Google Patents

Description

[Detailed explanation of the invention] This invention relates to drum bar force, and more specifically, a rotary peeling tool (rotary cutter) with cutting blades formed on the circumferential surface is inserted and rotated into a rotating cylindrical body that rotationally transports wood. It concerns the force of the drum bar that forcibly strips the wood.

Conventional drum bar force is often used in which protruding blades are installed on the inner surface of the circular body, and when a log or the like is displaced with the rotation of the circular body, the bark comes into contact with the protruding blades and peels off the bark.

Therefore, structurally, the bark is peeled off only by the frictional effect caused by the contact between the wood inserted into the cylinder and the protruding blade, which is inefficient, and moreover, the protruding blade often breaks, making maintenance troublesome. There were drawbacks such as.

This invention aims to eliminate the above-mentioned drawbacks, and its feature is that at least two rotating bodies are arranged coaxially and rotatably with a slight gap between them. A conical rotary cutter is attached to a bearing whose one end is supported by vertical and horizontal pivots and the other end is elastically held, and the rotary cutter is inserted into the rotating body through the gap and moves inside the rotating body. This provides a drum bar force that allows the rotary cutter to peel off the skin using the swingable rotary cutter.

An embodiment of this invention shown in the drawings will be described in detail below.

Figure 1 shows the overall configuration of the drum bar force of this invention.
~1C is a plurality of cylindrical bodies, each of which has a base 2a~
2f is mounted on a roller 4 which is pivotally supported by a bearing 3 via a rolling wheel 5 attached to the outer periphery of the cylindrical body, and the wood fed into the cylindrical body from a wood input hopper 6 is transported in the direction of the arrow. As it rotates, it can be transferred to the discharge lower side.

Reference numeral 9 denotes a rotary cutter device, which is fixed to a fixed frame 9A. As shown in FIGS. 2 and 3, a rotary cutter 10 is inserted into each gap 8 provided in advance between the cylindrical bodies. A rotary cutter is pressed against the bark of the wood as it is rotated to peel off the bark.

Note that an unnecessary portion of the gap 8 is closed with a ring-shaped concealing body 8A.

The rotary cutter device 9 described above includes a rotary cutter 10.
, a bearing 11 and a bearing support mechanism 13, and a second
As shown in FIGS. 7 to 7, one end of the cylindrical bearing 11 is supported by the support frame 14 with vertical pivots 12a and 12b so that the other end of the bearing can swing in the left and right directions. The support frame is supported by pivots 15a and 15b so as to be able to swing vertically from the other end of the bearing to a U-shaped support frame 16, and furthermore, the other end of the large diameter is supported by a U-shaped support frame 16. 17 is a spring 1 that absorbs the vibration in the left and right direction.
Support rod 19a fixed to the support frame via 8a and 18b
, 19b and a cylindrical support tube 20a fixed to the bearing.
20B, it can be moved to a T-shaped support frame attached to allow slight left and right movement, and downward movement and weight can be moved to the support frame via springs 211 to 21C. T-shaped support rod 2 installed like this
They are each supported by two bearing support mechanisms 13.

The rotary cutter 10 is fixed to a conical cutter portion 23, has a rotating shaft 24 inserted through the bearing 11, and has a V-pulley 25 attached to the end thereof, which is connected to a power source for rotating the rotating shaft via a V-belt. The slack of the V-belt is absorbed by a tension spring 33 via a tension pulley 31.

Note that 26a and 26b are metal rings inserted between the cutter portion and the bearing, and between the bearing and the pulley.

As shown in FIGS. 2, 3, and 7, the rotary cutter device 9 described above has a cylindrical body 1a, 1b, and 1b, 1b.
The support frame 16.17 is tilted through the gap 8 provided between C so that the cutter part 23 is tilted at an angle of α° with respect to the perpendicular passing through the center of the circular body so that the tip of the cutter faces in the wood transport direction. As shown in the drawings and FIG. 5, it is attached to the base frame 27 so as to maintain the above state.

Furthermore, a V-pulley 25 and an electric motor 28 attached to the base frame
It is connected to the output pulley 29 by a V-belt 30 to rotate at high speed, and a tension adjustment mechanism 31 is added to this V-belt in consideration of slight movement of the pulley.

In other words, this mechanism 31 connects the tension roller 31A engaged with the V-belt 30 to the rotation arm 31B and the tension spring 31.
It is composed of C.

Reference numeral 32 in FIG. 3 is a stopper that prevents the wood inserted from the concealing body 8A from the gap 8 toward the center line of the cylinder from moving in the circumferential direction along the inner surface of the cylinder.

The drum bar force of this invention is constructed as described above, and the case where the bark of wood is peeled off by this drum bar force will be explained below.

When wood a is continuously fed into the cylinder 1C from the wood input hopper 6 shown in Fig. 1, the wood is lifted by the rotation of the cylinder water and then falls, giving it an agitating motion and gradually moving toward the discharge lower. However, the distribution of wood inside the cylindrical body is from cylindrical body 1C, where the input port is located, to cylindrical body 1A, where the discharge port is located.
The amount gradually decreases towards the sides.

Therefore, a cutter portion 23 with a length slightly shorter than the diameter of the circular cylinder, which rotates at high speed, is inserted into the circular cylinder from the gap 8 between the circular cylinders la and lb and lb and IC, and the wood that moves while stirring is inserted into the circular cylinder. The stopper 32 prevents the lifting amount, and the cutter part 23 peels off the bark of the temporarily stopped wood, and the peeling work progresses efficiently in cooperation with the peeling blades provided on the inner periphery of the circular bodies 1a to 1C. .

If an excessive load is applied to the rotary cutter device 9 due to a large amount of wood jamming between the cutter portion 23 and the inner circumferential surfaces of the circular bodies 1a to 1C, the cutter portion 23 is oscillated by the bearing mechanism 13 together with the bearing 11. Since it is movable, it can swing freely in the direction with less load.

In this way, the rotary cutter device 9 can avoid an excessive load, rotate smoothly and exhibit a peeling effect, and when the wood is no longer clogged, the three springs 21 are removed from the swinging state shown by the broken line.
a to 21 The state is restored to the state shown by the solid line, which is the balance point between C and the weight of the cutter section 23 and the bearing 11.

As mentioned above, this invention consists of at least two rotary bodies arranged coaxially and rotatably with a slight gap between them, one end supported by vertical and horizontal pivots, and the other end supported by an elastic body. A conical rotary cutter is attached to a bearing that is held in place, and the rotary cutter is inserted into the rotating body through the gap, and the wood moving inside the rotating body is stripped by the swingable rotary cutter. ,
The peeling capacity of the drum bar force increases significantly, and even if an excessive load is applied to the rotary cutter device due to wood blockage, the rotary cutter device can swing freely, resulting in damage to the bearings or breakage of the cutter. When the problem is resolved, it self-restores itself and has the effect of always allowing smooth peeling work.

[Brief explanation of the drawing]

The figures show one embodiment of this invention. Figure 1 is an overall configuration diagram of the drum bar force, and Figures 2 and 3 are a plan view and a side view showing the relationship between the circular body and the rotary cutter. , FIG. 4 is a front view of the rotary cutter device partially cut out due to the line A-A in FIG. 6, FIG. FIG. 7 is a side view partially cut away due to the C-C disconnection, and FIG. 7 is a plan view showing the state in which the rotary cutter device is installed. 1a to 1C... circular body, 8... gap,
9...Rotary cutter device, 10...
rotary cutter, 11... bearing, 12 a,
12 b, 15 a, 15 b-- Pivot, 13... Bearing support mechanism, 14, 16, 17
．． 22...Support frame, 18a, 18b...
... Spring, 21 a to 21 C ... Spring, 19a. 19b...branch, 20a, 20b...
...Support cylinder, 23...Cutter part.

Claims (1)

[Scope of utility model registration request] At least two rotating bodies are installed coaxially and rotatably with a slight gap between them, and one end is supported by vertical and horizontal pivots, and the other end is supported by a conical bearing elastically held. The drum bar force is characterized in that a rotary cutter is attached, the rotary cutter is inserted into the rotary body from the above-mentioned distance, and the wood moving inside the rotary body is stripped by the swingable rotary cutter.