JPS6268702A - Cleavage roll mechanism - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a splitting roll mechanism, and more specifically, it is used to split thinned wood and other leftover materials produced during sawing into long fibers in the longitudinal direction. The present invention relates to a roll that is preferably used.

Background of the invention To obtain straight timber suitable for architectural columns.

Logs are sawn into lumber at sawmills, and the large amount of scraps (residues) that are produced during this process are often incinerated.
It is not being utilized effectively. Furthermore, when planting and growing trees in mountain forests, bent books and other miscellaneous trees that cannot be used for construction or furniture manufacturing are currently cut down in the seventh season and left as thinning wood. Large needle scraps and thinned wood that cannot be used for these building materials, etc. (hereinafter referred to as "both")
In order to reuse thinned wood (hereinafter referred to as "thinned wood"), a chipper is used to turn the thinned wood into small pieces of chips, and these chips are glued and pressurized to manufacture chip integrated boards. There is.

This type of chip-integrated board, which has been known in the past, is intended to make effective use of the thinned wood mentioned above, but since the individual chips that make up the board are short pieces,
The problem is that the board as a whole lacks strength. In addition, in order to cut thinned wood into many chips using a chipper,
Disadvantages have also been pointed out, such as requiring large-scale equipment and increasing the amount of power consumed by the drive source.

Therefore, as an alternative to the conventional chip integrated board, thinned wood is split vertically into long fiber bundles to obtain long fiber bundles, these fiber bundles are glued and stacked, and then pressurized to form a fiber integrated board of the required thickness. The technology for manufacturing is proposed by the applicant,
It has now reached the stage of practical application. To briefly explain an example of the manufacturing process of this fiber integrated board, thinned wood such as a log is cut into predetermined lengths, and then cut vertically into, for example, eight pieces using a splitter. , obtain a vertically divided member having a sector shape in cross section. Next, the material with a low moisture content in this vertically split material is steamed in a steamer to adjust the moisture content, and the vertically split material is split vertically into thin pieces to loosen into long fibrous bundles, and then dried. and then adjust the moisture again.
These long fiber bundles are glued and laminated in large numbers in a superimposed manner.

The direction (orientation) of the fiber bundles during this lamination may be alternately changed or may be in the same direction. A bundle of fiber materials laminated in the required number of layers is heated and pressurized using a hot press machine to form a board of the required thickness.
Dimensional cuts are then made.

The fiber integrated board thus obtained has sufficient strength because the fiber bundles constituting it are long. Furthermore, compared to using a chipper, there are advantages such as requiring smaller scale equipment and less power. It also has the same advantages as conventional chipboard, such as effective use of thinned wood and high yields regardless of tree species.

By the way, in order to fully bring out the above-mentioned features of the fiber laminated board, it is important to roughly split the thinned wood vertically (for example, into 8 pieces) and then split the wood into thin long fibers in good condition. It is. This is because if the fibers are split in the middle during this splitting process, the board after molding will not have sufficient strength.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a split roll that can satisfactorily produce long fiber bundles that are used as raw materials for forming fiber laminated boards.

Means for Solving the Problems In order to achieve the above-mentioned object, the splitting roll mechanism according to the present invention splits a material obtained by coarsely splitting thinned wood or the like in the longitudinal direction, and further splits it into thinner pieces in the longitudinal direction to form long fiber bundles. This roll mechanism is characterized in that a large number of upper and lower pairs of rolls are arranged at required intervals in the horizontal direction, and a required pattern is formed on the surface of each opposing roll. In this case, one roll may be configured to be movable up and down relative to the other roll.

EXAMPLES Next, a number of preferred embodiments of the splitting roll mechanism according to the present invention will be described below with reference to the accompanying drawings.

FIG. 1 shows a longitudinal section as an example of a split roll mechanism, in which a pair of upper and lower rolls 10 and 12 are
A large number of them are arranged at predetermined intervals in the horizontal direction. The lower rolls 12 are rotatably arranged horizontally at fixed positions at required intervals, and are actively driven by a motor 14 in a direction to send out the vertically split material to be processed downstream. . Further, the upper rolls 10 facing each of the lower rolls 12 are arranged to be able to move up and down with respect to the lower rolls 12 so that the roll interval can be adjusted, and are actively driven by another motor. The vertically split material sandwiched between them is sent out in the downstream direction. Furthermore, upper roll 10
Various modifications can be proposed as the mechanism for raising and lowering the group, such as a mechanism that biases each upper roll 10 downward by applying a pneumatic cylinder or a hydraulic cylinder, or a mechanism that applies elasticity such as a compression spring or synthetic rubber. It may also be configured to use repulsive force from the member. Moreover, it is preferable that the interval between the upper and lower rolls 10.12 facing each other in this splitting roll is configured such that the interval gradually narrows from the upstream entrance to the downstream exit.

This is because the supplied material consisting of vertically split material is gradually split into thinner pieces as it is sent downstream, and its thickness decreases.

The shapes of the upper and lower rolls 10.12 shown in FIGS. 3 to 8 are preferably used. That is, in the roll shown in FIG. 3, the surfaces of the upper and lower opposing rolls are formed into chevron-shaped grooves, and the peaks and valleys of the chevron-shaped grooves of one roll are
The grooves are directed toward the valleys and peaks of the chevron-shaped grooves on the other roll. Note that the gap between both rolls is slightly narrower so that it is smaller than the thickness of the vertically split material to be supplied.

In the rolls shown in Fig. 4, the surface of each roll is formed with a relatively gentle waveform in the longitudinal direction, and the waveform peaks and valleys of one roll are the same as the waveform valleys of the other roll. The mountain is facing each other.

In the roll shown in Fig. 5, thread grooves are formed spirally on the roll surface at a predetermined pitch, and the thread pitch of the upper roll and lower roll is the same, and the circumferential direction of these thread grooves is opposite. It is set like this. For example, top roll 1
0 has a right-hand thread, and the lower roll 12 has a left-hand thread. Further, in the roll shown in FIG. 6, thread grooves are formed on the surfaces of the upper and lower rolls at the same pitch and in the same direction. In this case as well, a required spacing is required between the threads of both opposing rolls.

In the rolls shown in FIG. 7, thread grooves are similarly formed on the surfaces of the upper and lower opposed rolls. The circumferential directions of the thread grooves of the upper and lower rolls are the same, but the thread pitch is changed.

The roll shown in FIG. 8 has spikes 18 planted on each surface of the upper and lower rolls at predetermined intervals,
8 is configured to split the vertically split material and send it to the downstream side without contacting and interfering with each other during rotation.

As shown in Figure 1, these split rolls are arranged in large numbers at predetermined intervals in the horizontal direction, but the roll mechanism as a whole is divided into three zones from the upstream side to the downstream side. That is, the first four upstream roll groups constitute a splitting zone where the splitting of the material is substantially performed;
The intermediate four roll groups constitute a separation zone that separates and unfolds the split long fiber bundle group and sends it downstream.

The final two roll groups constitute a rolling zone that rolls the separated and expanded long fiber bundle group into a flat and dense shape. Therefore, the upper and lower rolls 10.12 shown in FIGS. 3 to 8 are used in an appropriate arrangement in the splitting zone and separation zone, and the rolling zone has a normal smooth roll surface. A pair of rolling rolls is used.

According to the present invention, when thinning material is coarsely divided longitudinally by a splitter and the vertically split material is clamped by the upper and lower rolls 10°12 and sent downstream, the chevron grooves, corrugated surfaces, etc. are formed on the surface of each roll. Due to the presence of the thread groove, the fibers are forcibly split in the longitudinal direction, forming long fibers that are continuously sent to the separation zone.

In this splitting zone, by appropriately changing the roll arrangement, the longitudinally splitting material is fed in a meandering manner and is formed into a uniform, unbroken long fiber bundle. In the separating zone, the long fiber bundles are separated into flat strips, which are then compressed in the next rolling zone and sent to the next stage.

As described above, with the splitting roll mechanism according to the present invention, thin long fiber bundles from thinned wood can be split extremely easily, and a large amount of good long fibers that are not split midway can be produced. be.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of the split roll mechanism according to the present invention, and FIG.
The figure is a cross-sectional view taken along the line nn of FIG. 1, and FIGS. 3 to 8 are explanatory diagrams showing examples of split rolls used in the present invention. =11- FIG, 1 □” F[G, 2 FIG, 3 FIG, 4 FIG, 5 n FIG, 6 FIG, 7 FIG, 8

Claims (7)

[Claims] (1) A roll mechanism for obtaining long fiber bundles by vertically coarsely splitting thinned wood, etc. into thinner pieces in the vertical direction, and requires a pair of upper and lower rolls in the horizontal direction. A split roll mechanism characterized in that a large number of split rolls are arranged at intervals so that a required pattern is formed on the surface of each opposing roll. (2) A chevron-shaped groove is formed on the surface of each vertically opposing roll, and the peaks and valleys of the chevron-shaped groove on one roll are
The splitting roll mechanism according to claim 1, wherein the splitting roll mechanism is configured to be directed toward the troughs and peaks of the chevron-shaped groove in the other roll. (3) A relatively gentle waveform is formed in the longitudinal direction on the surface of each vertically opposing roll, and the peaks and valleys of the waveform of one roll are the same as the valleys of the waveform of the other roll. The split roll mechanism according to claim 1, wherein the split roll mechanism is configured such that the peak portions face each other. (4) A spiral thread groove is formed on the surface of each vertically opposing roll, and the thread pitch of the upper roll and lower roll is the same, and the circumferential direction of these thread grooves is opposite. The splitting roll mechanism according to claim 1, wherein the splitting roll mechanism is set so as to be. (5) A spiral thread groove is formed on the surface of each vertically opposing roll, and the thread pitch of the upper roll and the lower roll is the same, and the circumferential direction of these thread grooves is the same. The splitting roll mechanism according to claim 1, wherein the splitting roll mechanism is set so as to be. (6) A spiral thread groove is formed on the surface of each roll that faces each other vertically, and the direction of rotation of the thread groove on the upper roll and the lower roll is the same, but the thread pitch is different. The splitting roll mechanism according to claim 1, which is configured to do so. (7) Spikes are planted on the surfaces of the vertically opposing rolls at predetermined intervals, and the spikes of each roll are configured so as not to contact and interfere with each other during rotation. Splitting roll mechanism described in section.