JPS6118968Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a pre-treatment device for a rotary drum coverr, and more specifically, to an improvement of a rotary drum coverr equipped with a treatment device.

In conventional general drum barkers, a large number of protruding blades are attached to the inner surface of the can body, and when the log placed in the can body changes its position as the can body rotates, it touches the protruding blades and breaks the bark. It is configured to be peeled off. Therefore, structurally, the bark is peeled off only by the frictional effect caused by the contact between the raw wood put into the can and the protruding blades, and it can be used to peel off the bark from small diameter trees, frozen trees, etc.
When peeling hard trees such as walnuts and oaks, the protruding blades frequently break and the peeling efficiency is poor.

In order to eliminate these drawbacks, a system has been put into practical use in which a gap is formed between two rotating can bodies, and a rotary ivy is inserted between the two to forcibly peel off the bark. Although a considerable effect can be expected in this case, the debarking efficiency is still low in the case of hard trees such as frozen trees, walnuts and oaks as described above.

The purpose of this invention is to eliminate such drawbacks, by providing a fixed can between the raw wood input section and the rotating can, which communicates with these, and at the bottom of the fixed can in the longitudinal direction. A large number of holes are arranged in a row, rotary cutters are provided that protrude into the can body from each hole, and these cutters are arranged alternately as a first plurality of cutters and a second plurality of cutters, and the A first (or second) multi-piece set of cutters is installed on the spring support side of a base plate that swings by a spring, and the second (or first) multi-piece set of cutters is rotatably supported by the base plate. The present invention provides a preprocessing device for a rotary drum coverr, which is characterized in that both sets of cutters are installed on the side of the cutter and rotated independently.

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

Figure 1 is a side view of the drum coverr with a pre-treatment device of this invention. In the figure, 1 is a fixed foundation plate made of concrete, and on this fixed platen 1 are a wood removal section 2, a drum coverr 3, A pretreatment device 4 and a charging section 5 are arranged in series.

The wood removal section 2 and the drum cover 3 have a well-known structure, and in the figure, 31 is a rotating can body, 32a and 32b are rails attached to the outer periphery of the can body, and 33 is a rotating force (not shown) of this can body. The pulleys 34a and 34b connected to each other by a belt are each a pair of can support roller sets.

A can body 41 having a diameter slightly smaller than that of the rotary can body 31 constituting the pretreatment device 4 is fixed on the fixed base plate 1 with support members 42a to 42c, as shown in FIGS. 1 and 2. As will be described later, in the bottom of the can body 41, a plurality of cutter insertion holes 44 are regularly drilled in the length direction of the can for the three-piece and two-piece rotary cutters 431a to 431e to enter into the can body. There is.

The rotary cutter unit 43 is shown in FIGS.
There are teeth (notches) 432 on the outer periphery as shown in Figures a to c.
Bearing members 434a to 43 in which rotary cutters 431a to 431e formed with
4e with shafts 435a to 435e, and gears 436 are respectively mounted on the shafts 435a to 435e.
a to 436e are attached, and the rotary cutters 431a and 431b are equipped with a motor 437a fixed on the base plate 433 and chains 438a and 438b,
The rotary cutters 431c to 431e are mounted on the base plate 433.
Motor 437b and chain 438c fixed above
- 438e are configured to rotate independently in the rotational directions indicated by arrows, and one end of this base plate 433 is pivotally connected to a support base 11 attached to a fixed base plate 1 by a shaft 12, and the base plate 433 is A spring 13 for imparting elasticity is attached between the other end and the fixed base plate 1. That is, the first plurality of cutters 431
a and 431b are installed on the spring support side of the base plate 433 that swings by the spring 13, and
The second plurality of cutters 431c to 431e are installed on the rotation support side of the base plate. Furthermore, rotary cutter 4
31, as shown in FIGS. 4 and 5 a to c, teeth (notches) 432 having a rectangular spirally curved or straight cross section are provided on the outer periphery of the disk body at the same pitch or at irregular pitches. , the teeth can be selected depending on the hardness and condition of the log.

The rotary drum barker pretreatment device of this invention is constructed as described above, and the operation for peeling the bark of logs will be described below.

First, the rotary drum coverr and rotary cutter unit 43 are connected to the second
Rotate as shown by the arrow in the figure.

Next, when the log a is thrown into the input section 5 using a transport means such as a hawk lift, the log a falls from one end of the fixed can 41 into the fixed can. The log a that has fallen into the can is first cut into two sets of rotary cutters 431a, 431b and 431c to 431 of the rotary cutter unit 43 located directly below the input port.
The bark is scraped and stirred by the rotation of e, and it is lifted up along the can wall with the teeth of the rotary cutter.
It is lifted up to a certain height and is sent little by little to the other side of the can body 41 by the feed of the teeth (notches) 432 of the rotary cutters 431a to 431e. During this time, the base plate 433 is placed in a part where the elasticity is small and the elasticity is reduced. Small two-piece cutter 431a, 431
b is a set of three cutters 431c to 4 installed in a part where the base plate has a large elasticity and has a strong contact with the raw wood.
31e has a weak effect on raw wood. Further, in the next rotary cutter unit 43, the skin is subjected to the same scraping, stirring and feeding action as described above, and after being forced to shed the skin in sequence, it enters the rotary drum cover 3, and as is well known, the skin inside the rotary can body 31 is removed. The remaining peeled bark is completely peeled off by the peeling action of the numerous notches, and the log from which the bark has been peeled is discharged from the wood removal section 2. The bark peeled off by the pretreatment device 4 is discharged from the can through the hole 44.

As mentioned above, this invention has a fixed can body 4 which is connected between the raw wood input section 5 and the rotating can body 31.
1, a large number of holes 44 are arranged in a row in the length direction at the bottom of the fixed can body, and rotary cutters 431 are provided that protrude into the can body from each hole.
a base plate which is arranged alternately between the plurality of cutters 431a, 431b and the second plurality of cutters 431c to 431e, and which swings the first (or second) plurality of cutters by a spring 13; 433
is installed on the spring support side of the spring, and the second
(or the first set of cutters) was installed on the rotary support side of the base plate, and both sets of cutters were made to rotate independently, so the log was subjected to the complicated peeling action as described above, and the small diameter It has the effect of being able to efficiently peel off the bark of trees, frozen trees, trees whose bark is hard and difficult to remove, such as walnuts and oaks.

[Brief explanation of the drawing]

The figures all show one embodiment of this invention. Figure 1 is a side view of the entire device in communication with the rotary drum coverr, Figure 2 is a longitudinal sectional view, and Figure 3 is A of Figure 2. 4 is a perspective view of the rotary cutter, and FIGS. 5a to 5c are side views showing modified examples of the teeth of the rotary cutter. DESCRIPTION OF SYMBOLS 1... Fixed base plate, 2... Wood removal section, 3... Drum coverer, 4... Pretreatment device, 5... Input section, 31
...Rotating can body, 33...Pulley, 41...Can body,
431a-431e...Rotary cutter, 44...
...Cut insertion hole, 431...Cut unit, 4
32...notch, 433...base plate, 434a~4
34e...Bearing member, 435a-435e...
Axis, 436a to 436e...Gear, 437a...
Motor, a... Log.

Claims (1)

[Scope of utility model registration request] A fixed can body 41 is provided between the raw wood input section 5 and the rotary can body 31 and communicates therewith, and a large number of holes 44 are arranged in a row in the length direction at the bottom of the fixed can body. Protruding rotary cutters 431 are provided, and these cutters are connected to a first plurality of cutters 431a,
431b and second plural-piece cutters 431c to 43
1e, and the first (or second) multi-piece cutters are installed on the spring support side of the base plate 433 that is swung by the spring 13, and the second (or first) 1. A pretreatment device for a rotary drum bar cover, characterized in that a plurality of sets of cutters are installed on the rotary support side of the base plate, and both sets of cutters are independently rotated.