JP2004292168A - Orientation stacking device and orientation stacking method for wood chip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an orientation stacking device and an orientation stacking method capable of laterally uniformizing the amount of stacked wood chip when the oriented wood chip is stacked. <P>SOLUTION: This orientation stacking device for wood chip comprises an orientation device having a gutter-like part in which a plurality of orientation grooves positioned laterally parallel with each other are formed aslant and a vibration means for vibrating the gutter-like part and a carrying device arranged continuously with the orientation device. A plurality of orientation plates are disposed on the downstream side of the gutter-like part at the upper end part of the carrying device. After slender wood chip mixed with a binder charged into the upstream side of the gutter-like part is oriented in the longitudinal direction of the orientation grooves by the vibration of the gutter-like part by the vibration means, the wood chip is fallen on the carrying device through the orientation plates and stacked on the carrying device. The device also comprises a wood chip eliminating means eliminating both lateral end parts of the wood chip stacked on the carrying device from the carrying device for each specified width. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to an oriented laminating apparatus and an oriented laminating method for a wood chip when obtaining a high-strength wood-based composite material by pressing an elongated wood chip with a binder.

The wood chips mixed with the binder are mixed with the wood chips in the fiber direction (high strength direction of anisotropic material).
Aligned, that is, oriented in the same direction as the above, to form a wood mat, fix it through a pressing or heating step, etc., the molded plate, the mechanical strength in the fiber direction as well as the physical strength Is known to be dramatically improved, and there are materials that can be used as structural materials such as LSL (laminated strand lumbar) and PSL (parallel strand lumbar).

As a device for orienting a wood chip, various devices have been devised in which a wooden piece is naturally dropped and passed through an orienting plate to orient. For example, a device for orienting wood chips by arranging a plurality of disks coaxially at regular intervals and passing the wood chips between the disks while rotating the disks, or a plurality of plates arranged in parallel Are arranged, and the wood chips are oriented by passing the wood chips between the boards reciprocating in opposite directions.

However, in these devices, the wood chips are arranged in one direction in the same plane in the vertical and horizontal directions by the orientation plate, but are not easily oriented in the vertical direction due to natural fall.

As a device for reducing the wood chips that are not oriented by natural fall, for example, from a supply position of wood chips toward a conveyor provided at a lower portion, a substrate having side walls attached on both sides thereof has an arbitrary inclination angle. And the lower cross section is formed in a continuous uneven shape in the width direction orthogonal to the tilt direction of the substrate, and the uneven shape is extended in parallel with the tilt direction of the substrate, and vibration is further applied to the substrate. There has been proposed an orientation laminating apparatus for wood chips to be applied (for example, see Patent Document 1).

In the above apparatus, the wood chips (corresponding to the wood chips in the present invention) to be dropped are:
At the hollow position immediately after the drop, the omnidirectional state is in a non-directional state, but it is dispersed and dropped in each concave-convex concave portion and receives the vibration of the substrate. Is started.

In this state, when the tip of the wood chip falls into a concave-convex concave portion in a state in which the tip of the wood chip is omnidirectional, that is, a curved surface or a triangular inclined surface in a wave shape, the length direction of the wood chip becomes the substrate. Due to the vibration, it will be subjected to the action of following the surface of the concave portion in parallel, and if it impacts on the convex portion, the length direction of the wood chip will react in a direction at an acute angle to the impact angle, that is, with the convex portion. It will receive a moment to rotate in a parallel direction. Therefore, the length direction of the wood chip subjected to the moment to be rotated is vibrated and conveyed in the tilt direction of the substrate while being regulated by other adjacent wood chip, and is oriented.

JP-A-59-48324 (pages 1 to 7)

However, another concave portion exists on both sides of the concave portion near the central portion. Therefore, some of the wood chips falling into the concave portions on both sides are mixed into the concave portion near the central portion. However, in the concave portion near the both ends of the apparatus, there is a problem that the amount of the wood chips falling into the concave portion is smaller than the concave portion near the central portion because the adjacent concave portion is only on one side. .

That is, in the entire concave portion, the wood chips are small at both ends of the apparatus and large in the vicinity of the central portion. Therefore, when this is pressed to a uniform thickness, the density of the pressed product differs between the both ends and the central portion. And the product quality such as strength becomes non-uniform.

The present invention solves the above-mentioned problems of the conventional technology, and provides an orientation lamination apparatus and an orientation lamination method in which when laminated wood chips are oriented, the amount of the laminated wood chips is uniform in the width direction. It was done for the purpose of doing.

In order to solve the above-mentioned problem, an oriented laminating apparatus for wood chips according to claim 1 of the present invention (hereinafter referred to as “oriented laminating apparatus of claim 1”) is supplied from a supply unit in a state where it is leveled in a width direction. After orienting the lengthwise direction of the wood chips in the conveying direction of the conveying device with the orienting device, the elongated wood chips mixed with the continuously supplied binder are dropped on the conveying device, and the It is an orientation lamination device for wood chips in which the wood chips are oriented and laminated,
It is characterized in that it is provided with a wood chip removing means for removing, from the wood chips received on the transfer device, the wood chips that have fallen to the fixed width portion from both sides of the transfer device to the outside of the transfer device.

According to a second aspect of the present invention, a wood chip oriented laminating apparatus (hereinafter, referred to as “a second oriented laminating apparatus”) is the oriented laminating apparatus of the first aspect, wherein the orienting apparatuses are arranged in parallel in the width direction. It is characterized in that it has a plurality of orientation units, and the wood chip removing means eliminates the wood chips supplied to the transfer device through two or more orientation units on both sides of the orientation device.

According to a third aspect of the present invention, there is provided a wood chip oriented laminating apparatus (hereinafter referred to as “a third oriented laminating apparatus”). A gutter-like portion provided with a plurality of inclined alignment grooves serving as a plurality of orienting portions and vibration means for vibrating the gutter-like portion; and A plurality of alignment plates provided at the position of the upper end.

A wood chip oriented laminating apparatus according to claim 4 of the present invention (hereinafter, referred to as “oriented laminating apparatus of claim 4”) is the same as the oriented chip laminating apparatus according to any one of claims 1 to 3, except that the wood chip is eliminated. The means is a pair of side guides for guiding the elongated wood chips mixed with the binder dropped on the conveying device from the side end of the conveying device to the outside of the conveying device.

In the present invention, the woody chip oriented laminating apparatus according to claim 5 (hereinafter referred to as “oriented laminating apparatus of claim 5”) is a binder that is continuously supplied from a supply means in a state of being leveled in the width direction. After orienting the long and thin wood chips mixed with the orienting device in the conveying direction of the conveying device with the orienting device in the longitudinal direction of the wood chips, dropping the chips on the conveying device, and orienting and stacking the wood chips on the conveying device. Wood chip oriented lamination device,
The orienting device is characterized in that it comprises guide means for guiding the wood chips supplied from the supply means to the fixed width portions on both sides in the width direction of the orienting device to the outside of the transport device.

According to a sixth aspect of the present invention, there is provided an oriented laminating apparatus for wood chips according to the sixth aspect of the present invention. It has a plurality of parallel orientation plates, and the elongated wood chips mixed with the binder supplied from the supply means fall toward the transport device while being oriented through gaps formed between the orientation plates. Orientation part, a frame-shaped discharge part having a gap between upper and lower openings arranged on both sides in the width direction of the orientation part, a vibration applying means for applying vibration to at least the orientation part, and a lower part of the gap between the discharge part. And a slider-shaped guide means for receiving the wood chips passing through the gap of the discharge portion and guiding the wood chips to the outside of the transport device.

According to a seventh aspect of the present invention, there is provided an oriented laminating apparatus for wood chips according to the seventh aspect (hereinafter referred to as an "oriented laminating apparatus of the seventh aspect"). Are arranged side by side on two sides.

According to an eighth aspect of the present invention, there is provided an oriented laminating apparatus for wood chips according to claim 8 (hereinafter referred to as “oriented laminating apparatus of claim 8”). It has a plurality of parallel orientation plates, and the elongated wood chips mixed with the binder supplied from the supply means fall toward the transport device while being oriented through gaps formed between the orientation plates. Orientation part, and a body consisting of a groove-shaped part having a bottom inclined in the transport direction that receives the wood chips entering the gap arranged from both sides and disposed on both sides of the orientation part, and vibration applying means for vibrating the body, Slider-like guide means is provided, which is transported to the downstream side of the groove-shaped portion by vibration and receives the wood chips falling from the downstream end of the groove-shaped portion and guides the chip to the outside of the transport device.

According to the oriented laminating apparatus for wood chips described in claim 9 of the present invention (hereinafter referred to as “oriented laminating apparatus of claim 9”), in the oriented laminating apparatus of claim 8, the groove portions are provided on both sides of the oriented section. It is characterized by two or more juxtaposed.

The oriented lamination method of wood chips according to claim 10 of the present invention (hereinafter referred to as “oriented lamination method of claim 10”) is a method in which a binder is continuously supplied from a supply means in a state where it is leveled in a width direction. After orienting the long and thin wood chips mixed with the orienting device in the conveying direction of the conveying device with the orienting device in the longitudinal direction of the wood chips, dropping the chips on the conveying device, and orienting and stacking the wood chips on the conveying device. A method for orienting and laminating wood chips, wherein, among the wood chips received on the transfer device, the wood chips that have fallen to a fixed width portion from both sides of the transfer device are removed outside the transfer device, and the excluded wood chips are removed. Is collected and again supplied to the orientation device via the supply device.

The oriented lamination method of wood chips according to claim 11 of the present invention (hereinafter referred to as “oriented lamination method of claim 11”) is a method in which a binder is continuously supplied from a supply means in a state where it is leveled in a width direction. After orienting the long and thin wood chips mixed with the orienting device in the conveying direction of the conveying device with the orienting device in the longitudinal direction of the wood chips, dropping the chips on the conveying device, and orienting and stacking the wood chips on the conveying device. A method for orienting and laminating wood chips, wherein the wood chips supplied from the supply means to the fixed width portions on both sides in the width direction of the orientation device are guided outside the transfer device so as not to drop onto the transfer device, and are guided. It is characterized in that the wood chips collected are collected and fed into the orientation device again via the supply device.

Hereinafter, the present invention will be described in detail.
In the present invention, the cross-sectional shape of the alignment groove is not particularly limited, and examples thereof include those having a substantially V shape, a substantially U shape, a substantially U shape, and the like, and converging downward like a substantially V shape and a substantially U shape. The cross-sectional shape is preferable in consideration of the orientation.

The orientation plate is for preventing the orientation from being disturbed when the wood chips are transferred from the trough-shaped portion to the conveyor, and preferably has a friction coefficient as small as possible and a lightweight one. Plastics and the like.
In addition, the thickness of the wood chip and the width between the orientation plates have a more preferable relationship to obtain a high-strength wood-based composite material. For example, when the thickness of the wood chip is 1 mm to 11 mm, Preferably, the width is 20 mm to 40 mm, and the thickness of the wood chip is 3 mm to 5 m.
In the case of m, the width between the alignment plates is preferably 20 mm to 30 mm.

If the width between the alignment plates is too narrow, the wood chips do not fall smoothly between the alignment plates, and if the width between the alignment plates is too wide, the wood chips are not sufficiently oriented, and the orientation direction of the obtained wood-based composite material There is a risk that the required strength at the point will be lost.
The falling distance of the wood chips between the orientation plates is preferably 200 mm or less when the orientation plates are not vibrated. That is, if the falling distance, that is, the distance that the wood chips pass between the orientation plates is too long, the wood chips may be clogged between the orientation plates.

The receiving portion of the wood chips in the transport device is a conveyor, a plate placed on the conveyor,
Alternatively, the wood chips previously received by the belt conveyor are preferably as small as possible from the lower end of the alignment plate to these receiving portions. That is, if the drop is too large, the wood chips that fall later may pierce the mat-like laminate that has been laminated earlier, and may not be properly oriented horizontally. By the way, in the case of a short wood chip of less than 15 cm, 0
It is preferable to set the head to 30 mm. As the stacked wood chip transport device, a belt conveyor, a roller conveyor, a coal plate mounted on them, or the like is used.

4. The orientation laminating apparatus according to claim 3, wherein the pair of side guides are provided at an upper end of the transport device connected to the alignment groove, and remove the wood chips stacked on the upper end side of the transport device from the transport device. However, the minimum dimension between the side guides is set to a dimension in which the amount of the laminated wood chips is uniform in the width direction. Usually, the overall dimension in the width direction of each alignment groove is between a pair of side guides. Is set to be preferably 10 mm to 150 mm wider than the minimum dimension of
Although the height of the side guide depends somewhat on the stacking height of the wood chip layer, a height of 10 to 50 mm higher than the stacking height of the wood chip layer is usually set. The side guide may be fixed to the alignment plate, or may be fixed by a stand outside the shape.

The tree species of the wood chips to be oriented and laminated using the orientation lamination apparatus of the present invention are mainly cedar, cypress, spruce, fir, conifers such as radiata pine, birch, apiton, chamelere, sengonglaut, aspen and the like. Although hardwoods are mentioned, not only plant materials produced from these forests but also plant materials produced outside the forest, such as bamboo and koulyang, can be included.
Examples of the form that can be used for the raw material include, but are not particularly limited to, raw materials such as logs of the above tree species, thinned wood, scrap materials generated in factories and housing construction sites, waste pallet materials discarded after transporting members, and construction materials. Dismantling waste generated at the time of dismantling is exemplified.

The method of processing the raw material into wood chips is not particularly limited.For example, a method in which a veneer processed by a rotary cutter is cut into chopsticks into a stick, a log is cut by a rotating blade of a flaker, and a strand is cut. And a method of crushing wood by rotating a roll provided with a blade on the surface of a uniaxial crusher.
If the thickness of the wood chips crushed as described above is not uniform, the wood chips are classified into wood chips of a certain range as necessary. The classification is not particularly limited as long as the classification can be performed by using a classifier such as a wave roller system. The wave roller classifier is a device that classifies continuously based on the thickness of the chip.

The wood chips thus obtained are usually mixed with a binder by lamination or the like before lamination. Examples of the binder include phenol resin, urea resin, isocyanate, etc., wood used for plywood and particle board. Industrial adhesives may be mentioned, and these binders may be used alone or in combination of several kinds.
The binder may be in a liquid or powder form. In the case of a liquid, the binder is generally supplied to the orientation laminating apparatus in a state of being sprayed on a piece of wood material, or mixed and stirred with wood chips in advance and supported on the wood chips. In the case of powder, it is generally supplied to an orientation laminating apparatus in a state of being uniformly mixed with wood chips.

Further, it is preferable that the wood chips have a constant moisture content. By keeping the moisture content constant, the quality variation of the wood-based composite material during production is eliminated. The preferred water content is 10% by weight or less, and may be substantially 0% by weight.
As a method of making the water content constant, for example, a method of leaving a piece of wood material in a temperature-controlled oven for a certain period of time can be mentioned. Incidentally, when left in an oven at 50 ° C. for 24 hours, the water content is maintained at about 5%.

The wood chips are oriented using an orientation laminating apparatus, and the laminated mat is transported to a press apparatus by a belt conveyor. Then, the wood-based composite material having a desired thickness is formed by heating and compression molding by a press device.
The heating method is not particularly limited, and examples thereof include a method of transmitting heat to the inside by heat transfer from the surface of a wood chip like a hot plate, and a method of directly heating the inside such as steam injection or high-frequency heating. Can be

Furthermore, it is preferable that the wood-based composite material obtained from the laminated mat is subjected to annealing treatment, cutting, and sanding in order to improve dimensional accuracy and surface properties after press molding.

In the oriented lamination method according to claim 10 or claim 11, the method for collecting the wood chips and returning the collected wood chips to the feeder upstream of the orientation device is not particularly limited. For example, the wood chips removed by the wood chip removing means are included. Or, once the wood chips, which have been prevented from being supplied onto the transfer device by the wood chip supply prevention means, are once received in containers provided on both sides of the transfer device,
A method of returning the container from the container to the upstream side of the orientation laminating apparatus sequentially or, if necessary, using a pneumatic transport or a conveyor can be used.

In the laminating apparatus according to the first aspect of the present invention and the laminating method according to the tenth aspect, as described above, the wood chips stacked at the both ends in the width direction of the wood chips stacked on the transport device are excluded from the wood chips such as side guides. As a result, only the portion where the wood chips at the center are uniformly stacked remains on the transfer device. Accordingly, by pressing the remaining laminated mat on the transfer device, a wood-based composite material having a uniform density even in the width direction without being different at the center and the end as in the related art is provided. Can be.

According to the laminating method of the tenth aspect, the wood chips at both ends are collected and returned to the supply device again, so that the wood chips are used with good material efficiency.

According to the laminating apparatus of claim 5 and the laminating method of claim 11 of the present invention, as described above, the orienting device transports the wood chips supplied from the supply means to the fixed width portions on both sides in the width direction of the orienting device. Since the guide means for guiding the wood chips to the outside is provided, only the wood chips in a state where the wood chips are uniformly supplied and are oriented by the central orientation portion can be supplied to the transport device. Therefore, the wood chips can be laminated to a uniform thickness over the entire width of the conveying device, and the laminated mat is press-formed, so that the center and the end are not different from each other as in the related art, and even in the width direction. A wood-based composite material having a uniform density can be provided.

According to the laminating method of the eleventh aspect, the wood chips removed by the wood chip supply prevention means are collected and returned to the supply device, so that the wood chips are used with good material efficiency.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 3 show a first embodiment of a wood chip oriented laminating apparatus according to the present invention.

As shown in FIG. 1, the orientation laminating device 1a includes two orientation devices 2 and a belt conveyor 3 as a transport device, and also includes two end wood chip collecting devices 6.
As shown in FIG. 2, the orientation device 2 includes a gutter-like portion 21, a plurality of orientation plates 22, and vibration applying means 23.

The gutter-like portion 21 has a cross-sectional waveform in which alignment grooves 21a having a substantially V-shaped cross section are juxtaposed in the width direction, and has a downward slope from one (upper) to the other (lower) of the alignment grooves 21a. In addition, a discharge port 24 is provided on the downstream side, and rising walls 25 are provided on both sides in the width direction for preventing the wood chips 4 with a binder from falling off.
The alignment plate 22 is provided in parallel with the boundary between the alignment grooves 21a.

The vibration applying means 23 includes a horizontal bar 26 provided so as to straddle the two rising walls 25,
The vibrator 27 received by the horizontal bar 29, and the vibrator 27 is supported by a support (not shown).
And a spring 28 supported in a suspended state.
The transport direction of the belt conveyor 3 is parallel to the orientation plate 22.

The two orienting devices 2 are arranged side by side at a predetermined pitch in the conveying direction of the belt conveyor (the direction of arrow X in FIG. 1), and the distance (clearance) between the lower end of the orienting device 2 and the belt conveyor 3 is As the layer thickness increases from the upstream orienting device 2 toward the downstream orienting device 2, the setting is increased.
A wood chip 4 with a binder, which will be described in detail later, is provided at the upper end of the gutter-shaped portion 21 of each orienting device 2.
Are provided.

The supply device 5 includes a belt conveyor 51 and a leveling roller 52 provided with a plurality of ring-shaped grooves 53 parallel to the surface thereof.

  Next, the operation of the wood chip oriented laminating apparatus will be described in detail.

That is, first, crushed wood chips obtained by crushing or cutting waste wood with a crusher or a cutting machine are classified by a wave roller classifier, and have a thickness of 1 mm to 11 mm and a length of 1 cm to 15 cm.
Obtain classified wood chips.
Next, the wood chips are placed in a constant temperature and humidity chamber maintained at an atmosphere of a temperature of 40 ° C. to 90 ° C. and a relative humidity of 1% to 60%, and left for 12 hours or more to obtain wood chips having adjusted moisture content. Then, the binder is sprayed onto the wood chips in the drum blender, and the wood chips are loaded with the binder in the drum blender to obtain the wood chips 4 with the binder shown in FIGS.

Then, the wood chips 4 with the binder are placed on the belt conveyor 51 of the supply device 5 and are leveled by the leveling roller 52 so that the thickness of the wood chips 4 with the binder on the belt conveyor 51 is substantially constant. It is continuously supplied to the gutter-shaped portion 21 of the orientation laminating apparatus 2.
In each orienting device 2, the gutter-like portion 21 is vibrated by the vibration imparting means 23, and the vibration causes the wood chip 4 with a binder to enter the orienting groove 21a and be oriented toward the downstream direction of the orienting groove by the orienting groove 21a. It is conveyed toward the discharge port 24.

Then, the wood chips 4 with the binder discharged from the discharge port 24 fall while maintaining the alignment state between the alignment plates 22 arranged at intervals of a predetermined width, and fall directly on the upper surface of the belt conveyor 3 or The laminated mat 40 is received on the wood chips 4 previously placed on the belt conveyor 3 and is successively laminated so as to form a laminated mat 40 having a predetermined thickness, and the laminated mat 40 is pressed by the belt conveyor 3 with a pressing device (not shown). Conveyed toward.

A pair of side guides 26 as wood chip removing means provided at the upper end of the belt conveyor 3 connected to the alignment groove has a function of removing the wood chips stacked on the upper end side of the transfer device from the transfer device. . The side guides 26 shown in FIGS. 2 and 3 are fixed to the second sheets at both ends of the orientation plate 22, from which the wood chips 4 with the binder at the ends are dropped and collected by the collection device 6. The collecting device is temporarily stored in a container 61 as shown in FIG. 1 and is returned to the supply device 5 upstream of the transport stacking device 1 again through the pneumatic transport pipe 62.

Finally, the laminated mat 40 sent by the press device is continuously press-molded to a desired thickness to continuously obtain a wood-based composite material.

As described above, when the oriented laminating apparatus 1a is used, the wood chips at both ends are removed, and the oriented laminated mat has a uniform thickness. As shown in the above, it is not uniform between the center and the end, and is uniform in the width direction. In addition, since the wood chips 4 at both ends are collected and introduced into the apparatus again from the upstream side of the alignment groove, the wood chips can be used with good material efficiency.

FIG. 4 shows a second embodiment of a wood chip oriented laminating apparatus according to the present invention.
As shown in FIG. 4, the orientation lamination device 1b is the same as the orientation lamination device 1a except that the orientation device 7a is as follows.

That is, the orienting device 7a includes a main body 70 including an orienting portion 71 and a groove-shaped portion 72, a vibration motor 73, a vibration motor mounting jacket 74, four anti-vibration springs 75, four columns 76, And a slider 77 as guide means.

The orientation unit 71 is provided in parallel with the transport direction of the belt conveyor 3 so that a plurality of orientation plates 71a form a gap 71b having a predetermined width between the orientation plates 71a. The elongated wood chips 4 mixed with are dropped toward the belt conveyor 3 while being oriented through the gap 71b.
The groove-shaped portion 72 is provided in two rows on both sides of the orientation portion 71, and has a gap 72a having the same width as the gap 71b, and has a bottom inclined in the transport direction for receiving the wood chips 4 entering the gap 72a from below. A discharge port 72c provided on the downstream side is opened at a position substantially flush with a wall surface of a vibration motor mounting jacket 74 described later on the downstream side in the transport direction of the belt conveyor 3.

The vibration motor mounting jacket 74 has a rectangular frame shape, receives the main body 70 from below, and has its four corners received by the columns 76 via the vibration-proof springs 75.
The vibration motor 73 is fixed to the side wall surface of the vibration motor mounting jacket 74, applies vibration to the gutter 71 via the vibration motor mounting jacket 74, and supplies the wood chip with a binder supplied to the gutter 71. 4 is transported downstream while being oriented in the axial direction of the orientation groove 71b by the orientation groove 71b.

The slider 77 is provided along a wall surface of the vibration motor mounting jacket 74 on the downstream side in the transport direction of the belt conveyor 3, and has a groove of an upper opening having a slope descending from the center of the vibration motor mounting jacket 74 toward both sides in the width direction. It is formed in a shape.
That is, the slider 77 receives the wood chip 4 with the binder discharged from the discharge port 72c of the groove-shaped portion 72, slides down the slider 77 along the slope of the slider 77, and inserts the wood chip 4 into the container 61 provided outside the belt conveyor 3. The collected wood chips 4 with the binder supplied to the alignment grooves 71a are prevented from being supplied onto the belt conveyor 3.

Although not shown, the wood chips 4 with the binder collected in the container 61 are returned to the supply device 5 again through the pneumatic transportation pipe, similarly to the orientation laminating device 1a. .

This orientation laminating apparatus 1b is configured as described above. As shown in FIG. 4, the elongated wood chip 4 mixed with the binder is wider than the width of the orientation part 71 and substantially the same as or slightly smaller than the width of the main body 70. When supplied to the upstream side of the main body 70 from the supply device 5 in a uniform width, the wood chips 4 with the binder that have entered the groove portions 72 at both ends of the main body 70 drop onto the slider 77 from the discharge port 72c. Is guided by the container 61 and is not supplied onto the belt conveyor 3. That is, only a substantially uniform amount of the wood chips 4 with a binder that has entered the gaps 71b of the alignment portion 71 is received on the belt conveyor 3 or the wood chips 4 previously placed on the belt conveyor 3 and has a predetermined thickness. The laminated mats 40 are sequentially laminated.

Therefore, the laminated mat 40 obtained by orienting and laminating the wood chips 4 with the binder on the belt conveyor 3 has a uniform thickness, and the wood-based composite material obtained by press-molding the laminated mat 40 has a high density. Does not differ between the center and the end as in the prior art, and becomes uniform in the width direction. Further, the wood chips 4 with the binder collected in the container 61 are returned to the supply device 5 and supplied to the orientation device 7a, so that the wood chips 4 can be used with good material efficiency.
Further, in the case of the orientation laminating apparatus 1b, the thickness can be more reliably made uniform even when a plurality of orientation apparatuses 7a are provided in the transport direction of the belt conveyor 3, as shown in FIG.

FIG. 5 shows a third embodiment of a wood chip oriented laminating apparatus according to the present invention.
As shown in FIG. 5, in the orientation laminating apparatus 1c, the orientation apparatus 7b includes an orientation section 71 formed in the same manner as the orientation apparatus 7a, and two discharge sections 78 on both sides in the width direction of the orientation section 71. Having a main body 70 ′.

The discharge section 78 has a side wall 78a parallel to the orientation plate 71a of the orientation section 71, and has a frame shape of upper and lower openings having a gap 78b between the side walls 78a having the same width as the gap 71b between the orientation plates 71a.

The discharge portion 78 receives the wood chips 4 having passed through the gap 78b by a slider 79 which is mounted on the both sides of the vibration motor mounting jacket 74 with a downward slope toward the outside of the vibration motor mounting jacket 74. The configuration is the same as that of the above-described alignment laminating apparatus 1b, except that it is adapted to be used.
That is, in the orientation laminating apparatus 1c, the wood chips 4 entering the gap 71b of the orientation unit 71 fall while being oriented in the gap 71b, are oriented and laminated on the belt conveyor 3, and have entered the two gaps 78b on both sides. The wood chips 4 enter the containers 61 provided on both sides of the orientation device 7b via the slider 79.

The orientation laminating apparatus 1c is configured as described above, and as shown in FIG. 5, the elongated wood chip 4 mixed with the binder is wider than the width of the orientation portion 71 and substantially equal to or slightly smaller than the width of the main body 70 '. When supplied to the upstream side of the main body 70 ′ from the supply device 5 in a narrow width, the wood chips 4 with the binder that have entered the discharge portions 78 at both ends of the main body 70 ′ pass through the gap 78 b of the discharge portion 78. As a result, it falls on the slider 77, is guided by the container 61, and is not supplied onto the belt conveyor 3. That is, only a substantially uniform amount of the wood chip with a binder 4 that has entered the gap 71b of the alignment portion 71 is
They are received on the belt conveyor 3 or the wood chips 4 previously placed on the belt conveyor 3 and are successively laminated so as to form a laminated mat 40 having a predetermined thickness.

Therefore, the laminated mat 40 obtained by orienting and laminating the wood chips 4 with the binder on the belt conveyor 3 has a uniform thickness, and the wood-based composite material obtained by press-molding the laminated mat 40 has a high density. Does not differ between the center and the end as in the prior art, and becomes uniform in the width direction. Further, the wood chips 4 with the binder collected in the container 61 are returned to the supply device 5 and supplied to the orientation device 7b, so that the wood chips 4 can be used with good material efficiency.
Further, in the case of the orientation laminating apparatus 1c, the thickness can be more reliably made uniform even when a plurality of orientation apparatuses 7b are provided in the transport direction of the belt conveyor 3, as shown in FIG.

The present invention is not limited to the above embodiment. For example, in the orientation laminating apparatus 1b, the slider 77 is inclined to both sides, but may be inclined to one side.
Further, a gutter-shaped portion similar to that of the orientation laminating apparatus 1a may be further provided between the feeding apparatus 5 and the orientation apparatuses 7a and 7b of the orientation laminating apparatuses 1b and 1c.

In the orientation laminating apparatus 1a, the wood chips 4 oriented by the orientation grooves 21a on both sides in the width direction of the gutter-like portion 21 are removed from the belt conveyor 3 by the side guide 26. The wood chips 4 orientated by the two or more orientation grooves 21a on both sides in the width direction of the portion 21 may be removed from the belt conveyor 3 by the side guides 26.

(Example 1)
An alignment lamination as shown in FIG. 4 having 40 alignment grooves 71b of 25 mm width (total width of 1000 mm) at the center and four alignment grooves 71a of 25 mm width (total width of 100 mm) on both sides. The wood chip 4 with the binder is supplied from the supply device 5 to the gutter-shaped portion 71 of the device 1b at a charging width of 1200 mm, and a laminated mat having a thickness of 150 mm and a width of 1000 mm is obtained. A wood composite material sample I of the present invention was obtained in which the effective portion having a width of 38 mm and a width of 1000 mm had a specific gravity of 0.75.

(Comparative Example 1)
A wood composite material sample II of a conventional production method was obtained in the same manner as the above-mentioned wood composite material sample I, except that the wood chip 4 with the binder was supplied only from the supply device 5 to the gutter-shaped portion 7a with a charging width of 1000 mm.
After the obtained wood composite material sample I and wood composite material sample II were cut into a 1000 mm square plate, the entire plate was further cut into a 50 mm square grid, and the obtained 40 was obtained.
The specific gravity was measured for each of the 0 small pieces, and the distribution of the average specific gravity in the width direction of the sample was examined.
FIG. 6 shows the result.

As shown in FIG. 6, when the variation rate of 2% is defined as a boundary value, in the case of the wood composite material sample I of Example 1, the effective width is up to 900 mm, whereas the wood composite material sample II of Comparative Example 1 is effective. In the case of, there is an effective width only up to a width of 800 mm. This indicates that the use of the oriented laminating apparatus of the present invention enables the use of wood chips without waste, and also enables the obtained woody composite material to be stable in the width direction.

The wood composite material obtained by using the wood chip oriented laminating apparatus and the oriented laminating method of the present invention is useful as structural materials such as columns and beams used in houses, furniture materials, and the like.

It is a side view showing the 1st embodiment of the orientation lamination device concerning the present invention. It is a principal part expansion perspective view of FIG. FIG. 3 is a plan view of FIG. 2. It is a perspective view showing the orientation device part of the 2nd embodiment of the orientation lamination device concerning the present invention. It is a perspective view showing the orientation device part of a 3rd embodiment of the orientation lamination device concerning the present invention. FIG. 3 is a specific gravity distribution diagram of the samples obtained in Example 1 and Comparative Example 1.

Explanation of reference numerals

1a, 1b, 1c Orientation laminating device 2, 7a, 7b Orientation device 21 Gutter portion 21a Orientation groove 22 Orientation plate 23 Vibration applying means 24 Outlet 26 Side guide (pair)
29 Horizontal bar 3 Belt conveyor (transport device)
4 Wood chip with binder 5 Supply device 6 Wood chip recovery device 61 Container 70, 70 'Main body 71 Orientation part 71a Orientation plate 71b Gap 72 Groove part 72a Gap 72b Bottom 72c Discharge port 73 Vibration motor 74 Vibration motor mounting jacket 75 Vibration spring 76 Posts 77, 79 Slider (Wood chip supply prevention means)
78 Ejection part 78a Side wall 78b Clearance

Claims (11)

After orienting the elongated wood chips mixed with the binder continuously supplied from the feeding means in the state of being equalized in the width direction in the conveying direction of the conveying device with the orienting device, the conveying device It is an orientation lamination device of a wood chip that is dropped on the wood chip so that the wood chip is oriented and laminated on a transport device,
The wood chip orientation, wherein the wood chips received on the transfer device are provided with a wood chip removing means for removing the wood chips dropped from both sides of the transfer device to a fixed width portion outside the transfer device. Laminating equipment. The orienting device has a plurality of orienting portions arranged in parallel in the width direction, and the wood chip removing means eliminates the wood chips supplied to the transport device through two or more orienting portions on both sides of the orienting device. Item 1
A wood chip oriented laminating apparatus according to claim 1. An orienting device, a gutter-like portion provided with a plurality of inclined alignment grooves serving as a plurality of orienting portions arranged in the width direction, and vibration means for vibrating the gutter-like portion; and a downstream side of the gutter-like portion. The orientation stacking device for wood chips according to claim 1 or 2, further comprising a plurality of orientation plates provided at a position of an upper end of the transport device. The wood chip removing means is a pair of side guides for guiding the elongated wood chips mixed with the binder dropped on the transfer device from the side end of the transfer device to the outside of the transfer device. Item 4. An oriented laminating apparatus for wood chips according to any one of Items 3. After orienting the elongated wood chips mixed with the binder continuously supplied from the feeding means in the state of being equalized in the width direction in the conveying direction of the conveying device with the orienting device, the conveying device It is an orientation lamination device of a wood chip that is dropped on the wood chip so that the wood chip is oriented and laminated on a transport device,
An orientation stacking device for wood chips, wherein the orientation device includes guide means for guiding the wood chips supplied from the supply means to the fixed width portions on both sides in the width direction of the orientation device to the outside of the transport device. The orientation device has a plurality of orientation plates parallel to the transport direction of the transport device, and while the elongated wood chips mixed with the binder supplied from the supply unit are oriented through the gap formed between the orientation plates, An orienting portion that is configured to drop toward the transport device, a frame-shaped discharge portion having a gap between upper and lower openings disposed on both sides in the width direction of the orienting portion, and vibration that applies vibration to at least the orienting portion 6. The wood chip according to claim 5, further comprising: an application unit; and a slider-like guide unit that receives the wood chip passing through the gap of the discharge unit from below and receives the wood chip through the gap of the discharge unit and guides the wood chip to the outside of the transport device. Orientation lamination device. The orientation stacking device for wood chips according to claim 6, wherein two or more frame-shaped discharge units are provided on both sides of the orientation unit. The orientation device has a plurality of orientation plates parallel to the transport direction of the transport device, and while the elongated wood chips mixed with the binder supplied from the supply unit are oriented through the gap formed between the orientation plates, An orientation unit that is configured to drop toward the transport device, and a main body including a groove-shaped portion that is disposed on both sides of the orientation unit and has a bottom that is inclined in the transport direction and that receives the wood chips entering the gap from below, and Vibration imparting means for vibrating the main body, and slider-like guide means for receiving the wood chips which are conveyed by the vibration to the downstream side of the groove-shaped portion and fall from the downstream end of the groove-shaped portion and guide it to the outside of the conveying device are provided. The wood chip oriented laminating apparatus according to claim 5. 9. The apparatus according to claim 8, wherein two or more grooves are provided on both sides of the alignment part. After orienting the elongated wood chips mixed with the binder continuously supplied from the feeding means in the state of being equalized in the width direction in the conveying direction of the conveying device with the orienting device, the conveying device It is an oriented lamination method of wood chips in which the wood chips are dropped and stacked on a transfer device.
Of the wood chips received on the transfer device, the wood chips that have fallen to a fixed width portion from both sides of the transfer device are removed to the outside of the transfer device, the removed wood chips are collected, and then oriented again through the supply device. An oriented lamination method for wood chips, which is put into an apparatus. After orienting the elongated wood chips mixed with the binder continuously supplied from the feeding means in the state of being equalized in the width direction in the conveying direction of the conveying device with the orienting device, the conveying device It is an oriented lamination method of wood chips in which the wood chips are dropped and stacked on a transfer device.
Guide the wood chips supplied from the supply means to the fixed width portion on both sides in the width direction of the orientation device to the outside of the conveyance device so as not to fall on the conveyance device, collect the guided wood chips,
A wood chip oriented laminating method, wherein the wood chip is fed into the orientation device again via the supply device.

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