JP4619018B2 - Wood chip orientation laminating apparatus and orientation laminating method - Google Patents

Description

The present invention relates to an orientation laminating apparatus and an orientation laminating method for wood chips when a high-strength wood-based composite material is obtained by press-molding an elongated wood chip together with a binder.

The wood chip mixed with the binder is used in the fiber direction of the wood chip (high strength direction of anisotropic material).
Aligned in the same direction, that is, oriented to form a wood-based mat, which is fixed through a pressurizing or heating process, etc., and the molded plate has a mechanical strength and a physical strength in the fiber direction. Are known to improve dramatically, and there are materials that can be used as structural materials such as LSL (Laminated Strand Lumber) and PSL (Parallel Strand Lumber).

As a wood chip orientation device, various devices have been devised in which a wood piece is naturally dropped and passed between orientation plates. For example, a device that orients a wooden chip by arranging a plurality of disks on the same axis at regular intervals and passing the wooden chips between the disks while rotating the disks, or a plurality of plates arranged in parallel And the wood chips are oriented by passing between the plates that reciprocate 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 the vertical direction is difficult to be oriented due to natural fall.

As a device that reduces the number of wooden chips that are not oriented due to natural fall, for example, the board with side walls attached to both sides from the supply position of the wood chips toward the lower conveyor has an arbitrary inclination angle The lower cross section is formed in a concavo-convex shape continuous in the width direction orthogonal to the tilt direction of the substrate, the concavo-convex shape extends in parallel with the tilt direction of the substrate, and vibration is applied to the substrate. An orientation laminating device for wood chips to be applied has been proposed (see, for example, Patent Document 1).

In the above apparatus, the dropped wood chips (corresponding to wood chips in the present invention) are:
In the hollow position immediately after being dropped, it is in an omnidirectional state, but it is dispersed and dropped in the concave and convex portions and receives vibration of the substrate. The orientation action on is started.

In this state, if the tip of the wood chip is omnidirectional and falls to a concave-convex recess, that is, a wave-shaped curved surface or a triangular inclined surface, the length direction of the wood chip is When vibration is applied to the convex part, the length direction of the wood chip is an acute angle with respect to the prevention angle, that is, the convex part. You will receive a moment to rotate in the parallel direction. Therefore, the length direction of the wood chip subjected to the moment to rotate is vibrated and oriented in the tilt direction of the substrate while being regulated by another adjacent wood chip.

JP 59-48324 A (pages 1 to 7)

However, in the recess near the center, there are other recesses on both sides. Therefore, a part of the wood chip that falls into the concave portions on both sides of the concave portion in the vicinity of the central portion is mixed. However, in the recesses existing near both ends of the apparatus, the adjacent recesses are only on one side, so that the amount of wood chips falling into the recesses is less than the recesses near the center. .

That is, in the entire recess, there are few wood chips at both ends of the device, and there are many near the center, so if this is pressed to a uniform thickness, the pressed product will have different densities at both ends and the center. There is a problem that the product quality such as strength becomes non-uniform.

The present invention provides an oriented laminating apparatus and an oriented laminating method that solves the above-mentioned problems of the prior art and makes the amount of laminated wood chips uniform in the width direction when the oriented wood chips are laminated. It was made for the purpose.

In order to solve the above problems, the wood chip orientation laminating device according to claim 1 of the present invention (hereinafter referred to as “the orientation laminating device according to claim 1”) is supplied from the supply means in a state of being leveled in the width direction. After aligning the longitudinal direction of the wooden chip in the conveying direction of the conveying device with the orientation device, the elongated wooden chip mixed with the binder to be continuously supplied is dropped on the conveying device, and the above-mentioned on the conveying device. An orientation laminating device for wood chips, in which wood chips are oriented and laminated,
Of the wood chips received on the transport device, the wood chips are removed from the both sides of the transport device to a certain width portion, and the wood chips are excluded from the transport device.

According to a second aspect of the present invention, there is provided an orientation laminating apparatus for wood chips according to claim 2 (hereinafter referred to as "the orientation laminating apparatus according to claim 2"). It has a plurality of orientation parts, and the wood chip exclusion means excludes the wood chips supplied on the conveying device through two or more orientation parts on both sides of the orientation apparatus.

According to a third aspect of the present invention, there is provided an orientation laminating apparatus for wood chips according to claim 3 (hereinafter referred to as “orientation laminating apparatus according to claim 3”). A hook-shaped portion provided with a plurality of alignment grooves arranged in parallel with each other and an oscillating means for vibrating the hook-shaped portion; And a plurality of alignment plates provided at the position of the upper end.

According to a fourth aspect of the present invention, there is provided an orientation laminating apparatus for wood chips according to claim 4 (hereinafter referred to as "orientation laminating apparatus according to claim 4"). The means is characterized by a pair of side guides for guiding the elongated wooden chips mixed with the binder dropped onto the conveying device so as to be removed from the side end of the conveying device to the outside of the conveying device.

According to the fifth aspect of the present invention, the wood chip orientation laminating apparatus (hereinafter referred to as “the orientation laminating apparatus according to claim 5”) is a binder that is continuously supplied from the supply means in a state of being leveled in the width direction. The longitudinal wooden chip is oriented in the transporting direction of the transporting device with the orientation device after the long wooden chip mixed with is dropped on the transporting device, and the wooden chips are oriented and laminated on the transporting device. An oriented laminating device for wood chips,
The aligning device is characterized by comprising guide means for guiding the wood chips supplied from the supplying means to the constant width portions on both sides in the width direction of the aligning device to the outside of the conveying device.

According to the sixth aspect of the present invention, there is provided the orientation stacking apparatus for wood chips according to claim 6 (hereinafter referred to as "the orientation stacking apparatus of claim 6"). An elongated wooden chip having a plurality of parallel orientation plates and mixed with a binder supplied from the supply means falls toward the transport device while being oriented through a gap formed between the orientation plates. An 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, vibration applying means for applying vibration to at least the orientation part, and a gap between the discharge part below And a slider-shaped guide means for receiving the wood chip passing through the gap of the discharge portion and guiding it to the outside of the conveying device.

According to a seventh aspect of the present invention, there is provided an orientation laminating device for wood chips (hereinafter referred to as "the orientation laminating device according to claim 7"), wherein the frame-shaped discharge portion is an orientation portion. It is characterized in that two or more are provided side by side.

According to an eighth aspect of the present invention, there is provided an orientation laminating apparatus for wood chips according to claim 8 (hereinafter referred to as "orientation laminating apparatus according to claim 8"). An elongated wooden chip having a plurality of parallel orientation plates and mixed with a binder supplied from the supply means falls toward the transport device while being oriented through a gap formed between the orientation plates. A main body composed of an orientation portion, a groove-like portion having a bottom inclined in a conveying direction for receiving a wood chip that is disposed on both sides of the orientation portion from below, and vibration applying means for vibrating the main body, It is characterized by comprising a slider-shaped guide means that receives the wood chip that is conveyed to the downstream side of the groove-like portion by vibration and falls from the downstream end of the groove-like portion and guides it out of the conveying device.

According to the ninth aspect of the present invention, the wood chip orientation laminating device (hereinafter referred to as "the orientation laminating device according to claim 9") is characterized in that in the orientation laminating device according to claim 8, the groove portions are formed on both sides of the orientation portion. Two or more are arranged in parallel.

According to the tenth aspect of the present invention, there is provided a method of orienting and laminating a wood chip (hereinafter referred to as “orientation and laminating method according to claim 10”), wherein the binder is continuously supplied from the supply means in a state of being leveled in the width direction. The longitudinal wooden chip is oriented in the transporting direction of the transporting device with the orientation device after the long wooden chip mixed with is dropped on the transporting device, and the wooden chips are oriented and laminated on the transporting device. A wood chip orientation stacking method, wherein, out of the wood chips received on the transport device, the wood chips dropped from the both sides of the transport device to a constant width portion are excluded from the transport device, and the removed wood chips are excluded. Is recovered, and is again fed into the alignment device via the supply device.

According to the eleventh aspect of the present invention, there is provided a method for orienting and laminating wood chips (hereinafter referred to as “orientation and laminating method according to claim 11”). The longitudinal wooden chip is oriented in the transporting direction of the transporting device with the orientation device after the long wooden chip mixed with is dropped on the transporting device, and the wooden chips are oriented and laminated on the transporting device. A method of aligning and stacking wooden chips, wherein the wooden chips supplied to the constant width portions on both sides in the width direction of the aligning device from the supplying means are guided to the outside of the conveying device so as not to fall on the conveying device. It is characterized in that the collected wood chips are collected and again fed into the orientation device via the supply device.

The present invention is described in detail below.
In the present invention, the cross-sectional shape of the alignment groove is not particularly limited, and examples thereof include a substantially V shape, a substantially U shape, and a substantially bowl shape, and converge in a downward direction 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 intended to prevent the disturbance of orientation when transferring the wood chip from the bowl-shaped part to the conveyor, and preferably has a friction coefficient as small as possible and a lightweight one. Examples include plastics.
In addition, there is a more preferable relationship between the thickness of the wood chip and the width between the orientation plates to obtain a high-strength wood-based composite material. For example, when the thickness of the wood chip is 1 mm to 11 mm, The width is preferably 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 orientation plates is too narrow, the wood chips will not fall smoothly between the orientation plates, and if the width between the orientation plates is too wide, the orientation of the wood chips will be insufficient and the orientation direction of the resulting wood-based composite material There is a risk that the required strength will be lost.
The drop distance of the wood chip between the alignment plates is preferably 200 mm or less when the alignment plates are not vibrated. That is, if the fall distance, that is, the distance that the wood chips pass between the orientation plates is too long, the wood tips may be clogged between the orientation plates.

In addition, the receiving part of the wood chip in the conveying device is placed on a conveyor, a plate placed on the conveyor,
Or although it is a wood chip received by the belt conveyor previously, the one where the drop to these receiving parts from the orientation plate lower end is as small as possible is preferable. That is, if the drop is too large, the wood chip that falls later may pierce the mat-like laminate previously laminated, and may not be well oriented horizontally. Incidentally, in the case of a wood chip shorter than 15 cm, 0
It is preferable to set a head of ˜30 mm. As the laminated wood chip conveying device, a belt conveyor, a roller conveyor, a call board 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 portion of the transport device connected to the orientation groove, and the wooden chips stacked on the upper end side of the transport device are excluded from the transport device. However, the minimum dimension between the side guides is set so that the amount of the stacked wood chips is uniform in the width direction, and the overall dimension in the width direction of each orientation groove is usually between the pair of side guides. It is set so that it is preferably 10 mm to 150 mm wider than the minimum dimension.
The height of the side guide depends on the stacking height of the wood chip layer to some extent, but a height of 10 to 50 mm is usually set as the stack height of the wood chip layer. The side guides may be fixed to the orientation plate, or may be fixed by an unshaped stand.

Tree species of wood chips that are oriented and laminated using the orientation laminating apparatus of the present invention are mainly conifers such as cedar, cypress, spruce, fur, radiata pine, birch, apiton, chamelere, Sengonlaut, aspen, etc. Although broad-leaved trees are mentioned, not only plant materials produced from these forests but also plant materials produced outside the forests such as bamboo and cuolian can be included.
Forms that can be used as raw materials are not particularly limited, but include, for example, the above logs of logs, raw materials such as thinned wood, scraps generated at factories and residential construction sites, waste pallet materials discarded after transportation of materials, and construction Examples include demolition waste materials generated during dismantling.

The processing method for converting the raw material into a wood chip is not particularly limited. For example, a method in which a veneer processed by a rotary cutter is cut into a chopsticks shape to form a stick, and a log is cut by a rotary blade of a flaker. And a method of crushing wood by rotating a roll with a blade on the surface of a uniaxial crusher.
And if the wood chips crushed as described above are uneven in thickness, they are classified into wood chips with a certain range of thickness as necessary. Although it will not specifically limit if it can classify by, For example, the method of classifying using classifiers, such as a wave roller system, is mentioned. The wave roller type classifier is a device that performs continuous classification based on the thickness of the chip.

In addition, the wood chips obtained in this way are mixed with a binder by usual application before lamination, and as binder, wood used for plywood or particle board, such as phenol resin, urea resin, isocyanate, etc. Industrial adhesives can be mentioned, and these binders may be used alone or in combination of several kinds.
The binder may be liquid or powdery, but in the case of liquid, it is generally supplied to the orientation laminating apparatus in a state where it is sprayed on a piece of wood material or stirred and mixed with a wood chip and supported on the wood chip in advance. In the case of powder, it is generally supplied to the orientation laminating apparatus in a state of being uniformly mixed with the wood chip.

Further, the wood chip preferably has a constant moisture content. By making the moisture content constant, the quality variation of the wood-based composite material during production is eliminated. A preferable water content is 10% by weight or less, and may be substantially 0% by weight.
As a method for keeping the moisture content constant, for example, there is a method of leaving a piece of wood material for a certain time in a temperature-controlled oven. 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 device, and the laminated mats are conveyed to a press device by a belt conveyor. Then, the wood-based composite material having a desired thickness is formed by heat compression molding with a press device.
The heating method is not particularly limited, and examples thereof include a method of transferring heat from the surface of the wood chip to the inside by a heat transfer like a hot plate, and a method of directly heating the inside such as steam injection or high frequency heating. It is done.

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

The method of collecting and stacking wood chips according to claim 10 and claim 11 is not particularly limited as a method of collecting the wood chips and returning them again to the feeder upstream of the orientation device. For example, the wood chips removed by the wood chip removing means Alternatively, the wooden chips, which are prevented from being supplied onto the conveying device by the wooden chip supply preventing means, are received once in containers provided on both sides of the conveying device,
A method of returning from the container to the upstream side of the oriented laminating apparatus using air transportation, a conveyor, or the like in order or as necessary is raised.

In the laminating apparatus according to claim 1 and the laminating method according to claim 10 of the present invention, as described above, the wooden chips at both ends in the width direction of the wooden chips stacked on the transfer device are excluded from the wooden chips such as side guides. Since it is removed by the means, only the portion where the wood chips of the central portion are uniformly laminated remains on the conveying device. Accordingly, by pressing the remaining laminated mat on the transport device, a woody composite material having a uniform density in the width direction is provided without being different between the center and the end as in the prior art. Can do.

Further, according to the lamination method of the tenth aspect, the wood chips at both ends are collected and returned to the supply device, so that the wood chips are used with high material efficiency.

In the laminating apparatus according to claim 5 and the laminating method according to claim 11 of the present invention, as described above, the aligning apparatus transports the wooden chips supplied from the supply means to the constant width portions on both sides in the width direction of the aligning apparatus. Since the guide means for guiding the outside is provided, it is possible to supply only the wood chips in a state of being oriented by the central orientation portion where the wood chips are uniformly supplied. Therefore, it is possible to laminate the wood chips with a uniform thickness over the entire width on the conveying device, and by pressing this laminated mat, the center and the end are not different as in the prior art, and in the width direction as well. A wood-based composite material having a uniform density can be provided.

According to the laminating method of claim 11, the wood chips removed by the wood chip supply preventing means are collected and returned to the supply device, so that the wood chips are used with high material efficiency.

Embodiments of the present invention will be described below with reference to the drawings.
1 to 3 show a first embodiment of an orientation stacking apparatus for wood chips according to the present invention.

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

The bowl-shaped portion 21 has a cross-sectional waveform in which alignment grooves 21a having a substantially V-shaped cross section are arranged 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 chip 4 with a binder from falling out.
The alignment plate 22 is provided in parallel to the boundary line between the alignment groove 21a and the alignment groove 21a.

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

The two aligning devices 2 are arranged in parallel at a predetermined pitch in the conveying direction of the belt conveyor (the direction of the arrow X in FIG. 1), and the distance (clearance) between the lower end of the aligning device 2 and the belt conveyor 3 is As the layer thickness increases from the upstream orientation device 2 toward the downstream orientation product device 2, it is set larger.
Further, a wood chip 4 with a binder, which will be described in detail later, is provided at the upper end of the bowl-shaped portion 21 of each orientation device 2.
The supply device 5 is arranged.

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 movement of the wood chip orientation laminating apparatus will be described in detail.

That is, first, crushed wood chips obtained by pulverizing or cutting waste wood with a pulverizer or a cutting machine are classified by a wave roller type classifier, and the thickness is 1 to 11 mm, and the length is 1 to 15 cm.
Get the classified wood chips.
Next, the wood chips are placed in a constant temperature and humidity chamber maintained in an atmosphere at 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 a wood chip having a moisture content adjusted. The binder is sprayed on the wood chips in the drum blender, and the binder is supported on the wood chips in the drum blender to obtain the wood chip 4 with the binder shown in FIGS.

Then, the wood chip 4 with the binder is placed on the belt conveyor 51 of the supply device 5, and the thickness of the wood chip 4 with the binder on the belt conveyor 51 is leveled by the leveling roller 52 so that the thickness becomes substantially constant. It supplies continuously to the bowl-shaped part 21 of the orientation lamination | stacking apparatus 2. FIG.
In each orientation device 2, the bowl-shaped portion 21 is vibrated by the vibration applying means 23, and the wood chip 4 with the binder enters the orientation groove 21 a by this vibration, and is oriented toward the downstream direction of the orientation groove by the orientation groove 21 a. It is conveyed toward the discharge port 24.

Then, the wood chip 4 with the binder discharged from the discharge port 24 falls while maintaining the alignment state through the alignment plates 22 arranged at intervals of a predetermined width, or directly on the upper surface of the belt conveyor 3 or The laminated mats 40 are received one after another on the wood chip 4 previously placed on the belt conveyor 3 so as to form a laminated mat 40 having a predetermined thickness, and the laminated mat 40 is pressed by the belt conveyor 3 (not shown). It is conveyed toward.

The pair of side guides 26 as the wood chip removing means provided at the upper end portion of the belt conveyor 3 connected to the orientation groove has a function of removing the wood chips stacked on the upper end side of the transport device from the transport device. . The side guides 26 shown in FIGS. 2 and 3 are fixed to the second end plate of the orientation plate 22, and the wood chip 4 with the binder at the end portion is dropped and collected in the collecting device 6. As shown in FIG. 1, the recovery device is temporarily stored in the container 61, returned to the supply device 5 upstream of the transport laminating device 1 through the air transport pipe 62.

Finally, the laminated mat 40 sent by the pressing device is continuously press-formed until a desired thickness is obtained, so that a wood-based composite material is continuously obtained.

As described above, if this oriented laminating apparatus 1a is used, the wood chips at both ends are removed, and the oriented laminated mat has a uniform thickness. In this way, the center and the end are not different, and the width is uniform. Further, the wood chips 4 at both ends are collected and again put into the apparatus from the upstream side of the orientation groove, so that the wood chips can be used efficiently.

FIG. 4 shows a second embodiment of the orientation stacking apparatus for wood chips according to the present invention.
As shown in FIG. 4, this alignment layering apparatus 1b is the same as the alignment layering apparatus 1a except that the alignment apparatus 7a has the following configuration.

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

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

The vibration motor mounting jacket 74 has a rectangular frame shape, and receives the main body 70 from below, and four corners of the vibration motor mounting jacket 74 are received by the pillars 76 via the anti-vibration springs 75.
The vibration motor 73 is fixed to the side wall surface of the vibration motor mounting jacket 74, vibrates the hook-shaped portion 71 via the vibration motor mounting jacket 74, and is supplied to the hook-shaped portion 71. 4 is conveyed to the downstream side while being oriented in the axial direction of the orientation groove 71b by the orientation groove 71b.

The slider 77 is provided along the 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 in an upper opening having a gradient descending from the center of the vibration motor mounting jacket 74 toward both sides in the width direction. It is formed in a shape.
In other words, the wood chip 4 with the binder discharged from the discharge port 72c of the groove 72 is received by the slider 77 and slid down along the gradient of the slider 77, and placed in a container 61 provided outside the belt conveyor 3. The wood chip 4 with the binder collected and supplied to the orientation groove 71 a is prevented from being supplied onto the belt conveyor 3.

Further, the wood chip 4 with the binder collected in the container 61 is not shown, but is returned to the supply device 5 again through the air transport pipe as in the case of the orientation laminating apparatus 1a. .

The oriented laminating apparatus 1b is configured as described above. As shown in FIG. 4, the elongated wood chip 4 in which the binder is mixed is wider than the width of the orientation part 71 and substantially the same as or slightly narrower than the width of the main body 70. When supplied to the upstream side of the main body 70 from the supply device 5 after being equalized in width, the wood chip 4 with the binder that has entered the groove-like portions 72 at both ends of the main body 70 falls onto the slider 77 from the discharge port 72c. Then, it 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 4 with the binder that has entered the gap 71b of the orientation portion 71 is received on the belt conveyor 3 or the wood chip 4 previously placed on the belt conveyor 3 and has a predetermined thickness. The laminated mats 40 are laminated one after another.

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 the density. However, it is uniform in the width direction without being different between the center and the end as in the prior art. Moreover, since the wood chip 4 with the binder collected in the container 61 is returned to the supply device 5 and supplied to the orientation device 7a, the wood chip 4 can be used efficiently.
Further, in the case of this orientation laminating apparatus 1b, the thickness can be more reliably made uniform even when a plurality of orientation apparatuses 7a are provided in the conveying direction of the belt conveyor 3 as shown in FIG.

FIG. 5 shows a third embodiment of the orientation stacking apparatus for wood chips according to the present invention.
As shown in FIG. 5, in this orientation laminating apparatus 1 c, the orientation device 7 b includes orientation portions 71 formed in the same manner as the orientation device 7 a and two rows of discharge portions 78 on both sides in the width direction of the orientation portion 71. A main body 70 'having the same.

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

The discharge portion 78 is received by the wood chip 4 passing through the gap 78b by the slider 79 attached below the both sides of the vibration motor mounting jacket 74 with a downward slope toward the outside of the vibration motor mounting jacket 74. Except for the above, it is the same as the above-described oriented laminating apparatus 1b.
That is, in this orientation laminating apparatus 1c, the wood chip 4 that has entered the gap 71b of the orientation portion 71 falls while being oriented in the gap 71b, is oriented and laminated on the belt conveyor 3, and enters the two gaps 78b on both sides. The wood chip 4 enters a container 61 provided on both sides of the orientation device 7b via a slider 79.

The oriented laminating apparatus 1c is as described above. As shown in FIG. 5, the elongated wood chip 4 mixed with the binder is wider than the orientation part 71 and substantially the same as or slightly the same as the width of the main body 70 '. When the narrowed width is supplied to the upstream side of the main body 70 ′ from the supply device 5, the wood chip 4 with the binder that has entered the discharge portions 78 at both ends of the main body 70 ′ passes through the gap 78 b of the discharge portion 78. As a result, it falls onto the slider 77 and is guided by the container 61, and is not supplied onto the belt conveyor 3. That is, only the substantially uniform amount of the wood chip 4 with the binder that has entered the gap 71b of the orientation portion 71,
It is received one after another on the belt conveyor 3 or the wood chip 4 previously placed on the belt conveyor 3 and laminated one after another 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 the density. However, it is uniform in the width direction without being different between the center and the end as in the prior art. Moreover, since the wood chip 4 with the binder collected in the container 61 is returned to the supply device 5 and supplied to the orientation device 7b, the wood chip 4 can be used efficiently.
Further, in the case of this orientation laminating apparatus 1c, the thickness can be more reliably made uniform even when a plurality of orientation apparatuses 7b are provided in the conveying 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 on both sides, but it may be inclined on one side.
Moreover, you may make it further provide the hook-like part similar to the orientation lamination | stacking apparatus 1a between the orientation apparatus 7a, 7b of the said orientation lamination | stacking apparatus 1b, 1c, and the supply apparatus 5. FIG.

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

Example 1
An alignment laminate as shown in FIG. 4 having 40 alignment grooves 71b (overall width of 1000 mm) having a width of 25 mm in the central portion and four alignment grooves 71a (overall width of 100 mm) having four widths on each side. The wood chip 4 with a binder with a feeding width of 1200 mm is supplied from the feeding device 5 to the bowl-shaped portion 71 of the device 1b to obtain a laminated mat with a thickness of 150 mm and a width of 1000 mm, and then press-molded and further surface-cut to obtain a thickness. A wood composite material sample I of the present invention having a specific gravity of 0.75 having an effective area of 38 mm and a width of 1000 mm was obtained.

(Comparative Example 1)
A wood composite material sample II of the conventional manufacturing method was obtained in the same manner as the wood composite material sample I except that the wood chip 4 with a binder was supplied only from the feeding device 5 to the bowl-shaped portion 7a with an input width of 1000 mm.
The obtained wood composite material sample I and wood composite material sample II were cut into a 1000 mm square plate material, and then the whole plate material was further cut into a 50 mm square grid shape to obtain 40
Measure the specific gravity of each of the 0 pieces, examine the distribution of the average specific gravity in the width direction of the sample,
The results are shown in FIG.

As shown in FIG. 6, in the case of the wood composite material sample I of Example 1 where the variation rate is 2% as a boundary value, the width up to 900 mm is an effective width, whereas the wood composite material sample II of Comparative Example 1 In this case, there is only an effective width up to a width of 800 mm. From this, it can be seen that if the oriented laminating apparatus of the present invention is used, the wood chips can be used without waste, and the quality of the obtained wood composite material is stable in the width direction.

The wood composite material obtained by using the wood chip orientation laminating apparatus and orientation laminating method of the present invention is useful as a structural material such as a pillar or a beam used in a house, a furniture material, or the like.

It is a side view showing 1st Embodiment of the orientation lamination | stacking apparatus based on this 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 apparatus part of 2nd Embodiment of the orientation lamination apparatus which concerns on this invention. It is a perspective view showing the orientation apparatus part of 3rd Embodiment of the orientation lamination apparatus which concerns on this invention. 2 is a specific gravity distribution diagram of samples obtained in Example 1 and Comparative Example 1. FIG.

Explanation of symbols

1a, 1b, 1c Alignment laminating device 2, 7a, 7b Alignment device 21 ridge 21a Alignment groove 22 Alignment plate 23 Vibration applying means 24 Discharge port 26 Side guide (pair)
29 Horizontal bar 3 Belt conveyor (conveyance device)
4 Wood Chip with Binder 5 Supply Device 6 Wood Chip Recovery Device 61 Container 70, 70 ′ Body 71 Orientation Part 71a Orientation Plate 71b Gap 72 Groove 72a Gap 72b Bottom 72c Discharge Port 73 Vibration Motor 74 Vibration Motor Mounting Jacket 75 Prevention Swing spring 76 Posts 77, 79 Slider (wood chip supply prevention means)
78 Discharge portion 78a Side wall 78b Clearance

Claims (11)

An elongated wooden chip mixed with a binder continuously supplied from a supply means in a state of being uniformed in the width direction is oriented in the longitudinal direction of the wooden chip in the conveying direction of the conveying device by an aligning device, and then the conveying device A wood chip orientation laminating apparatus that drops and drops the wood chips onto the transport device.
Of the wood chips received on the transport device, the wood chip orientation characterized by comprising a wood chip exclusion means for removing the wood chips dropped from both sides of the transport device to a constant width portion outside the transport device Laminating equipment. The aligning device has a plurality of aligning portions arranged in parallel in the width direction, and the wood chip removing means excludes the wood chips supplied on the transfer device through two or more aligning portions on both sides of the aligning device. Item 1
2. An orientation laminating device for wood chips according to 1. An alignment device includes a hook-shaped portion provided with an inclined alignment groove serving as a plurality of alignment portions arranged in parallel in the width direction, vibration means for vibrating the hook-shaped portion, and a downstream side of the hook-shaped portion The wood chip orientation laminating device according to claim 1, further comprising a plurality of orientation plates provided at a position of an upper end portion of the transport device. The wood chip removing means is a pair of side guides for guiding the narrow wooden chip mixed with the binder dropped on the conveying device so as to be removed from the side end of the conveying device to the outside of the conveying device. Item 4. An apparatus for aligning and stacking wood chips according to any one of Items 3 to 4. An elongated wooden chip mixed with a binder continuously supplied from a supply means in a state of being uniformed in the width direction is oriented in the longitudinal direction of the wooden chip in the conveying direction of the conveying device by an aligning device, and then the conveying device A wood chip orientation laminating apparatus that drops and drops the wood chips onto the transport device.
An orientation laminating device for wood chips, characterized in that the orientation device includes guide means for guiding the wood chips supplied to the constant width portions on both sides in the width direction of the orientation device from the supply means 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 the elongated wooden chips mixed with the binder supplied from the supply means are oriented through the gap formed between the orientation plates. An orientation unit that is adapted to drop toward the transport device, a frame-shaped discharge unit having a gap between the upper and lower openings arranged on both sides in the width direction of the orientation unit, and vibration that imparts vibration to at least the orientation unit 6. The wood chip according to claim 5, further comprising: an applying unit; and a slider-like guide unit that receives the clearance of the discharge unit from below and receives the wooden chip passing through the clearance of the discharge unit and guides it out of the transport device. Oriented lamination equipment. The orientation stacking apparatus for a wood chip according to claim 6, wherein two or more discharge parts having a frame shape are arranged in parallel on both sides of the orientation part. The orientation device has a plurality of orientation plates parallel to the transport direction of the transport device, and the elongated wooden chips mixed with the binder supplied from the supply means are oriented through the gap formed between the orientation plates. A main body composed of an orientation portion that is adapted to drop toward the transport device, and a groove-shaped portion having a bottom that is inclined in the transport direction to receive a wooden chip that is disposed on both sides of the orientation portion and enters the gap from below; Vibration imparting means for vibrating the main body, and slider-like guide means that receives the wood chip that is conveyed to the downstream side of the groove-like portion by vibration and falls from the downstream end of the groove-like portion and guides it out of the conveying device. The orientation stacking apparatus for wood chips according to claim 5. 9. The wood chip orientation laminating device according to claim 8, wherein two or more groove-like portions are arranged in parallel on both sides of the orientation portion. An elongated wooden chip mixed with a binder continuously supplied from a supply means in a state of being uniformed in the width direction is oriented in the longitudinal direction of the wooden chip in the conveying direction of the conveying device by an aligning device, and then the conveying device A wooden chip orientation laminating method in which the wood chips are oriented and laminated on a transport device by dropping the wood chips,
Of the wood chips received on the transport device, the wood chips that have fallen to a certain width from both sides of the transport device are removed from the transport device, and the removed wood chips are collected and oriented through the supply device again. A method for orientation stacking of wood chips, which is put into an apparatus. An elongated wooden chip mixed with a binder continuously supplied from a supply means in a state of being uniformed in the width direction is oriented in the longitudinal direction of the wooden chip in the conveying direction of the conveying device by an aligning device, and then the conveying device A wooden chip orientation laminating method in which the wood chips are oriented and laminated on a transport device by dropping the wood chips,
The wooden chips supplied from the supply means to the constant width parts on both sides in the width direction of the orientation device are guided to the outside of the conveying device so as not to fall on the conveying device, and the guided wooden chips are collected,
A method of aligning and stacking wood chips, which is again put into an aligning device through a supply device.

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