JP4909598B2 - Method of making plate material from bent material, sawmill equipment used for it - Google Patents

Description

The present invention relates to a method of making a plate member from bending material, but about the timber equipment to be used therewith.
More specifically, conventionally, a method that can be many of by effectively utilizing the bending member including thinned wood which has been left in forest land, making a suitable plate material as uniform wooden pallet material thickness, device related to.

  Globally, timber consumption is increasing year by year, which has led to a decrease in forest area. On the other hand, the current situation in Japan is the opposite, and due to the recent decline in timber prices and the stagnation of forestry production activities due to the decline in the population of forestry workers, the management of forests has been fulfilled on the other hand. And resources are not fully utilized.

Forests have become an important position as a source of CO ₂ absorption in global warming countermeasures. In order to make full use of the functionality of this forest, it is necessary to maintain a healthy forest. For this purpose, it is essential to actively use low-level use materials such as bending materials and discoloration materials among thinned wood.
However, as described above, forestry production activities are stagnant as described above, and thinning and reforestation are not sufficiently performed, making it difficult to maintain a healthy forest.

Under these circumstances, thinning with subsidies from the national and prefectural governments is being promoted as forest maintenance, but the above-mentioned low-level use materials resulting from thinning are unsuitable for high-demand housing components, and even if they are put on the log market. Low demand and low price. Moreover, even if the lumber is produced, the yield is poor and it is not profitable.
For this reason, many of them are left in the forest, causing the devastation of the forest. In addition, abandoned materials also have a risk of inducing forest disasters such as landslides, and in order to reduce the neglect of thinned wood, it is required to develop new uses for low-level materials such as bending materials and discoloration materials. ing.

Conventionally, various lumbering apparatuses have been proposed that can reduce the cost so as not to be wasted as much as possible when a bent material is processed into a constituent material such as a plate material or a square material (see, for example, Patent Document 1).
The lumber device described in Patent Document 1 recognizes the surface shape of a Thai material obtained from a bent material by a sensor, and based on this recognition, controls a target lumber trajectory suitable for maximizing the yield rate of the square material. The feed posture is controlled so that the axis of the Tyco wood that passes the intermediate average position of the target sawing locus passes straight through the center position of the sawing machine, and each of the pair of band saws mounted on the sawing machine is the target sawing locus As shown in Fig. 5, a curved square member is obtained by controlling the movement and rotation of the saw machine in a direction transverse to the feeding direction of the Thai material.

Moreover, in order to effectively use thinned wood such as cedar as in the present invention, a wooden pallet has been proposed in which all the components are made of wood (see Patent Document 2).
The wooden pallet described in Patent Document 2 is made by dowel joining using wooden dowels and adhesive without using nails for joining the plate materials, and even if the wood fibers are made of rough cedar, it is sufficient Strength is obtained. In addition, for example, when disposing of a wooden pallet that is subject to disposal after its useful life has elapsed or broken, there is an advantage that it is not necessary to separate wood (plate material) and metal (nail), and labor can be reduced. .

Japanese Patent Application No. 2002-265437

Japanese Patent Application No. 2003-391208

  The wooden pallet described in Patent Document 2 mainly uses a plate material made of bent material such as thinned wood as a constituent material. When the bending material is cut, a sawing device represented by the one described in Patent Document 1 is used. In this lumbering apparatus, the bending material can be cut and processed with a predetermined thickness while being long, for example, about 2 to 3 m. However, the lumbering apparatus is increased in size, the control mechanism is complicated, and the apparatus is expensive. It is.

In addition, if a component material such as a plate material or a square material obtained by cutting a bent material is used as it is, the influence of the degree of bending is large, and it is difficult to use, and there are few applications. In order to solve this problem, if a material is processed into a direct material, a large amount of waste occurs.
As described above, there are many obstacles in recycling the forest resources by effectively using the bending materials including the thinned wood, which is a forest resource, and the construction of the system has been difficult.

(Object of the present invention)
An object of the present invention, conventionally, many by effectively utilizing the bending member including thinned wood which has been left in forest, with less waste suitable plate material as a material of uniform thickness wooden pallets It is to provide a method that can be created.

  Another object of the present invention is to provide a sawing apparatus capable of sawing a bent material with a uniform thickness with a simple structure.

(Delete)

Means taken by the present invention to solve the above problems are as follows.
A belt conveyor, a saw passed through the belt upper surface of the belt conveyor at a required distance, and a raised member disposed on the lower side of the belt of the belt conveyor, wherein the raised member feeds the belt Use a sawing device provided on the upper side than the tooth portion of the saw in the direction ,
The process of cutting bent materials into short pieces to make short pieces,
A step of placing the short material on a belt conveyor and sending it to the raised member side;
A method of producing a plate material from a bent material, the method comprising a step of cutting the short material into a certain thickness with a saw.

  The present invention is a lumber apparatus having a belt conveyor for sending a bending material, a saw passed through a belt upper surface of the belt conveyor at a predetermined interval, and a pressing means for pressing the bending material against the belt upper surface, A raised member is arranged on the lower side of the belt of the belt conveyor, and the raised member is a sawing device provided in the vicinity of the saw.

  In the sawing apparatus, the position of the raised member is more preferably set on the upper side of the saw tooth portion in the belt feeding direction.

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(Function)
The operation of the present invention will be described. Note that, here, each constituent element of the present invention is given and described in correspondence with the reference numerals given to the respective parts in the embodiments described later, but this provision of reference numerals is only for easy understanding of the explanation. However, it does not mean that the constituent elements are limited to the above-described parts.

According to the method for producing a plate material from a bent material according to the present invention, for example, a bent material including a thinned material is cut into short pieces according to the size of the material (60) constituting the wooden pallet (6), and each short piece is cut. Since the degree of bending of the entire length of the material (5) is eased, waste is less likely to occur when cutting and efficient use is possible.

Further, according to the above method and the lumber apparatus (A) according to the present invention, by arranging the raised member (2) on the lower side of the belt (11) of the belt conveyor (1), the upper surface of the belt (11) Since the distance from the band saw (33) is constant, the height of the belt (11) is fixed and does not change, and the short material (5) can be cut with a preset almost accurate thickness. . Note that a substantially accurate thickness or an essentially constant thickness means that some dimensional deviation is included.
Using this way a substantially accurate sheet material thickness made as the material (60) of wooden pallets (6), the strength and quality of the wooden pallet (6) is stabilized.

  When the position of the raised member (2) is set to the upper side of the tooth portion (330) of the band saw (33) in the feeding direction of the belt (11), the short material (5) is sent and the band saw (33 ), The height is already determined and stable, so that more accurate and stable cutting can be performed.

  Bending material including thinned wood, which is a forest resource, is cut into short pieces to make short pieces (5), and the short pieces (5) are placed on the belt conveyor (1) and sent to the raised member (2) side. The above-mentioned short material (5) is cut to an essentially constant thickness with a saw (33), and the components are joined to a wooden dowel (63) using an essentially constant thickness material. And dowel bonding with adhesives to make a wooden pallet (6) that is easy to recycle, all made of wood and for which a large demand is expected, and recycling the wooden pallet (6) that is subject to disposal Forest resource recycling system can be established.

  The present invention has the above-described configuration and has the following effects.

(A) According from bending member according to the present invention a method of making a plate material, the bending member, for example by cutting the short according to the size of the material forming the wooden pallets degree bend in the entire length of each short member By mitigating this, waste is less likely to occur when cutting and efficient use is possible.

According the bending member according to (b) the present invention to a method and timber apparatus for making a plate material, by placing a raised member on the lower side of the belt conveyor belt, so that the distance between the belt upper surface and the saw constant The height of the belt is fixed, and the short material can be cut and processed with an accurate thickness set in advance.
The thus thickness made by accurate plate material, for example be used as the material of the wooden pallet, the strength and quality of the wooden pallets is stabilized.

(C) In the sawing apparatus in which the position of the raised member is set on the upper side of the tooth portion of the saw in the belt feeding direction, when the short material is fed and hits the tooth portion of the band saw, the height is already determined and stable. Therefore, the workpiece can be cut more accurately and stably.

(Delete)

  The present invention will be described in detail based on the embodiments shown in the drawings.

FIG. 1 is a schematic side view showing an embodiment of a sawing apparatus according to the present invention,
FIG. 2 is a schematic front view of the lumber apparatus,
FIG. 3 is an explanatory view showing a lower raised member by partially cutting a belt of a belt conveyor of the lumber apparatus.

  The sawmill device A includes a belt conveyor 1, a raised member 2, a band saw device 3, and a pressing device 4. Before and after the lumber apparatus A, a plurality of belt conveyors (not shown) having a straight conveyance path are arranged in a loop. Thereby, the sawing apparatus A can process the material to be cut into constituent materials (a deck member 60 and a digit member 61 described later) by repeatedly passing the material to be cut through the band saw device 3.

(Belt conveyor 1)
The belt conveyor 1 includes a horizontal and flat base plate 10 having a required length. An endless belt 11 is wound between the front and rear end portions of the base plate 10, and the belt 11 is configured to rotate and move so as to slide on the upper surface of the base plate 10.

(Band saw device 3)
A band saw device 3 is provided at an intermediate portion of the feeding method of the belt conveyor 1. The band saw device 3 has a casing 30, and a passage gate 31 is provided at the center lower part thereof.
Inside the casing 30, rotary wheels 32 and 32a are provided on both sides, and an endless band saw 33 is wound around the rotary wheels 32 and 32a.

  The band saw 33 is passed so that the surface thereof is parallel to the upper surface of the belt 11 of the belt conveyor 1 at a predetermined interval and orthogonal to the moving direction of the belt 11. The direction of the band saw 33 is not limited to the above direction, and may be slightly inclined if there is no problem in the quality of the cutting work and the processed material obtained by cutting. The distance between the band saw 33 and the upper surface of the belt 11 is the cut thickness when the workpiece is cut, and this distance can be appropriately set by adjusting the height of the band saw 33.

(Raised member 2)
A raised member 2 formed in a rectangular plate shape in a plan view is provided at a required position on the upper surface of the base plate 10 in a portion of the belt conveyor 1 that passes through the band saw device 3, that is, below the belt 11. The raised member 2 is provided so as to be orthogonal to the moving direction of the belt 11 and substantially the same length as the width of the base plate 10, and both sides thereof are connected to the base plate 10 by a countersunk screw 21 that does not protrude from the upper surface of the raised member 2. It is fixed (see FIG. 3). In addition, the direction of the protruding member 2 is not limited to the above, but may be slightly inclined, may not necessarily be linear, and may be slightly bent.

  The raised member 2 is provided on the side closer to the belt 11 in the moving direction of the belt 11 than the position of the band saw 33. Specifically, the distance (distance) in plan view between the upper edge 20 of the raised member 2 and the tooth 330 of the band saw 33 is set to 10 mm. This interval is not limited to 10 mm and can be set as appropriate. In addition, the protruding member 2 is not limited to the upper side than the position of the band saw 33 as described above, and may be disposed directly below (same position) or on the lower side.

  In addition, although the thickness of the protruding member 2 is 1.5 mm and width 12 mm, it is not limited to this dimension. Further, the shape of the raised member 2 is not limited to a rectangular plate shape. For example, the belt 11 can be raised from the bottom at the same height over the required width, such as a rectangular bar shape or a semi-cylindrical shape. For example, various shapes can be used.

(Presser device 4)
The pressing device 4 presses the material to be cut that is sent on the belt 11 from above and presses it against the upper surface of the belt 11. In the moving direction of the belt 11 (arrow a: shown in FIGS. 1 and 3), It is provided on the upper side than the band saw device 3.

  The holding device 4 has an arm 40 that pivots up and down with a base end pivotally supported. The arm 40 is biased by an air spring 41 downward (in the clockwise direction in FIG. 1). The angle of the arm 40 can be adjusted by rotating the arm 40 up and down by the angle adjusting device 42.

  In addition, a pressing belt device 43 configured by turning a rotating belt between rollers is provided at the tip of the arm 40. The pressing belt device 43 can press and fix the workpiece to be cut against the upper surface of the belt 11 while pressing the upper portion of the workpiece to be sent on the belt 11 without obstructing its movement while rotating. .

(Function)
FIG. 4 is an explanatory view showing a state of a cutting portion when a short material is cut by a sawing apparatus.
With reference to FIG. 1 thru | or FIG. 4, the effect | action of the lumber apparatus A which concerns on this Embodiment is demonstrated.

On the belt 11 of the belt conveyor 1 of the lumber apparatus A, the short material 5 which is a workpiece to be cut is placed. The belt 11 is rotated to feed the short material 5 to the band saw device 3.
In addition, the short material 5 here is, for example, a cedar thinning material, which is a bending material having a length of 2 to 3 m, is cut in a short length according to the size of the plate material constituting the wooden pallet, and is bent at each individual length. The degree is relaxed. In the present embodiment, the length of the short material 5 is set to 1100 mm.

  The short material 5 sent to the vicinity of the band saw device 3 is pressed from above by the pressing belt device 43 of the pressing device 4 and pressed against the upper surface of the belt 11. The short material 5 is further fed by the belt 11 in this state. Then, it is raised by the raised member 2 at a position where the raised member 2 is provided, and is horizontally cut by the band saw 33 by the feed force of the belt 11 (see FIG. 4).

  At this time, the belt 11 raised to the bottom by the raised member 2 and guided slightly higher makes strong contact with the upper surface of the raised member 2 due to the weight of the short material 5. Thereby, the height of the upper surface of the belt 11 moving on the raised member 2 is continuously stable, and the distance from the band saw 33, that is, the cutting thickness is accurately maintained.

FIG. 5 shows the relationship between the number of times of sawing and the accuracy of the thickness of the original mouth when the raised member is used and not used in the sawing device, (a) when the raised member is used, and (b) when the raised member is not used. Graph when used,
FIG. 6 shows the relationship between the number of sawing operations and the accuracy of the central thickness when the raised member is used and not used in the sawing apparatus, (a) when the raised member is used, and (b) when the raised member is not used. Time chart,
FIG. 7 shows the relationship between the number of sawing operations and the accuracy of the thickness of the end when the raised member is used and not used in the sawing apparatus, (a) when the raised member is used, and (b) when the raised member is not used. It is a graph at the time of use.

  In addition, the setting conditions when taking the data of each graph are the tension of the band saw 33 (7 kg), the thickness of the raised member 2 (1.5 mm: the set value of the above embodiment), the position of the raised member 2 ( The upper side of the band saw 33 was 10 mm: the set value of the above embodiment), and the cutting thickness (20 mm).

FIG. 5 shows the relationship between the number of times the short material 5 has been cut and the accuracy of the thickness of the original opening of the resulting plate material.
As shown in FIG. 5 (a), in the case where the raised member 2 is used, there are some exceptions on the former mouth side of the plate material, but most of them are within a set value of ± 0.5 mm of 20 mm. Therefore, it was possible to cut almost accurately.
On the other hand, when the raised member 2 was not used, as shown in FIG. 5B, all exceeded the set value of 20 mm and showed a value that was not stable as a whole. And the thickest ones exceeded 24 mm, and the accuracy of the cutting process was poor.

FIG. 6 shows the relationship between the number of times that the short material 5 has been cut and the accuracy of the thickness at the center in the longitudinal direction of the resulting plate material.
As shown in FIG. 6 (a), in the case where the raised member 2 is used, there are some exceptions in the center of the plate material, but most of them are set values of 20 mm ± as in the case of the original mouth side. It was within 0.5 mm, and an almost accurate cutting process could be performed.
On the other hand, when the raised member 2 is not used, as shown in FIG. 6 (b), the overall value is not stable between a thickness of less than 18 mm and a thickness of more than 24 mm. Like the mouth side, the cutting accuracy was poor.

FIG. 7 shows the relationship between the number of times that the short material 5 has been cut and the accuracy of the thickness of the end of the finished plate.
As shown in FIG. 7 (a), when the raised member 2 is used, there are some exceptions on the end side of the plate material, but most of them are set values as in the case of the front side and the center. It was within ± 0.5 mm of 20 mm, and an almost accurate cutting process could be performed.
On the other hand, when the raised member 2 was not used, as shown in FIG.7 (b), most of them concentrated between 21-22 mm. Most of the things that did not enter there showed an unstable value between 20 mm and a thickness of less than 17 mm, and the accuracy of the cutting process was poor as in the front port side and the center.

  From the data shown in FIG. 5 to FIG. 7, by using the raised member 2, the accuracy of the thickness when the plate material is made from the short material 5 which is the material to be cut is determined from the original opening, the center, and the end opening. It was found that each part improved.

Further, the plate material thus produced has a length of 1100 mm, and when the degree of bending is too large, a straight plate having a required width is produced by cutting both sides in the width direction in parallel.
The part to be cut at this time is obviously made less than the case of cutting a long and large bend, since this plate material is made from a short material that has once been shortened to reduce the bend degree, Waste can be reduced.

  The reason why the accuracy of the machining dimension is improved by using the raised member 2 is not certain, but it is related to the fact that the wood left below is slightly warped when the wood is cut as described above. It seems that That is, when the short material 5 placed on the belt 11 is warped, it is easy to swing on the belt 11 like a swing chair. For this reason, when the short material 5 is sent without using the raised member 2, even if the pressing device 4 can be fixed to some extent, the cutting starts with the tip floating from the upper surface of the belt 11, and the shaking motion is sufficiently suppressed. Therefore, the thickness of the cut component is particularly large, and the dimension is not stable (see FIG. 6B).

  On the other hand, by placing the raised member 2 on the lower side of the belt 11 and raising the bottom, the back surface of the belt 11 comes into strong contact with the end portion 20 and the upper surface of the raised member 2, and the short material is warped upward. The front end portion of the belt 5 is guided and cut obliquely upward so as to ride on the belt 11 with a raised portion without forming a gap. As a result, the cut thickness at the end of the short material 5 is first accurate, and the swaying movement of the short material 5 is suppressed by the fixing action of the cutting part and the pressing device 4, so that the short material 5 has an almost accurate thickness over the entire length. It will be possible to cut it. In addition, even if the mechanism is different from the above reason, there is no change in the scope of the present invention.

FIG. 8 is a perspective view of a wooden pallet,
FIG. 9 is a plan view explanatory diagram of a wooden pallet,
FIG. 10 is a cross-sectional view of a principal part showing a fixing structure of the deck member and the digit member.

  Here, the structure of the wooden pallet 6 produced using the board | plate material (deck member) produced with the sawing apparatus A is demonstrated.

The wooden pallet 6 includes a plurality of deck members 60, three digit members 61 that are connecting members, and a dowel 63. Each deck member 60 and each digit member 61 are made of cedar thinning as a material as described above. Each digit member 61 is arranged in parallel at equal intervals at both ends and the center of the deck member 60. Five deck members 60 are bonded (fixed or fixed) to the upper and lower surfaces 611 and 612 of each digit member 61.
Each deck member 60 is provided in a direction orthogonal to the digit member 61, and a gap 64 having a required width is provided between the deck members 60.

Between each digit member 61, the insertion part 65 for inserting and passing the fork of a forklift truck, a hanging string, etc. in two places is provided in two places.
The structure of the joint portion between the deck member 60 and each digit member 61 will be described with reference to FIG. Although FIG. 10 shows the structure of the joint portion between the deck member 60 and the central digit member 61, the structure of the joint portion between the deck member 60 and the digit member 61 at both ends is the same.

  At the intersections of the deck members 60 and the digit members 61, there are three joint portions. The structure of the joint is a dowel joint. That is, dowel holes 602 are provided in the joint surfaces 601 of the deck members 60. The bottom of the dowel hole 602 is located in the middle part of the thickness of the deck member 60 and does not penetrate to the outer surface 603 side. In addition, dowel holes 613 are provided in the upper and lower surfaces 611 and 612 that are the joining surfaces of the digit members 61.

  Each deck member 60 and each digit member 61 first insert or apply an appropriate amount of adhesive into one of the dowel holes of each deck member 60 or each digit member 61, and then insert the dowel 63, and then the other dowel hole. An appropriate amount of an adhesive is injected or applied to the bonding surface 601 and the upper and lower surfaces 611 and 612 so as to be fitted to the protruding side of the inserted dowel 63 and assembled. Further, it is optional to attach an adhesive to the dowel 63 in advance. In this embodiment, a water-based vinyl adhesive is used as the adhesive. It should be noted that other adhesives such as an aqueous urethane adhesive and an aqueous polymer isocyanate adhesive can be used.

  The dowel 63 uses beech as a material. The dowel 63 has a structure in which a large number of spiral grooves (or strips) are provided on the outer peripheral surface. The diameter of the dowel 63 is formed to be slightly smaller than the inner diameters of the dowel holes 602 and 613 provided in the deck member 60 and the digit member 61 by being compressed. In this embodiment, the diameter of the dowel 63 is formed to be 0.2 mm smaller than the inner diameter of the dowel holes 602 and 613, and manual feeding is possible with almost no resistance. In addition, since the adhesive overflows from the dowel holes 602 and 613 when the adhesive is put into the dowel holes 602 and 613 and the dowel 63 is inserted, the joint surface between the deck member 60 and the digit member 61 is widely bonded with the overflow adhesive. Can improve the strength and quality of the whole pallet.

  When the dowel 63 is inserted into the dowel holes 602 and 613, the adhesive adheres to the dowel 63 and absorbs the component (liquid component) of the adhesive to expand. Each deck member 60 and each digit member 61 are more firmly fixed due to the combination of the adhesive force by the adhesive and the force with which the dowel 63 expands. Thereby, joining of the deck member 60 and the digit member 61 is performed reliably, and the intensity | strength as the whole wooden pallet improves. The diameter of the dowel 63 is not limited to a diameter smaller than that of the dowel holes 602 and 613 as described above, but is formed to have the same diameter or slightly larger diameter, driven into the dowel hole, and assembled by applying pressure to the joint portion. You may do it.

  The size of the wooden pallet 6 of this embodiment is 1100 mm in length, 1100 mm in width, 148 mm in thickness, and 1100 mm in length in the deck member 60, 120 mm in width, 24 mm in thickness, and a digit member 61. The size is 1100 mm in length, 50 mm in width, and 100 mm in thickness, but is not limited thereto. The size of the dowel 63 is 40 mm long and 11.8 mm in diameter, but is not limited to this.

(Work)
The operation of the wooden pallet 6 will be described with reference to FIGS.
Since the wooden pallet 6 is bonded to the dowel holes 602 and 613 with an adhesive, the wooden pallet 6 is nail even when thinned cedar with soft wood is used as the material of the deck member 60, the digit member 61 or the dowel 63. Therefore, there is no substantial difference in the strength of the joint portion compared to the conventional one.

  In addition, since the deck member 60 made of the plate material cut and processed by the lumber apparatus A has a predetermined thickness as described above, the strength and quality of the entire pallet are stabilized. Therefore, a cedar thinning material or the like can be used as a material for each member without any problem.

  Since the wooden deck member 60 and the digit member 61 are joined to the wooden dowel 63 by an adhesive, the nail is removed even when recycled, unlike the conventional one using a nail. It does not require time and effort, and can be cut into pieces by chipping. Therefore, the wooden pallet 6 can be easily and efficiently recycled after being discarded, by converting the waste material into chips and processing them into chipboard, or using them as pulp materials.

  In the conventional pallet using nails, rust is generated due to oxidation of the nail, and when the article is placed on the pallet, the rust adheres and may reduce the commercial value. Then, such a problem does not arise.

  Further, the dowel hole 602 is provided so as not to penetrate the outer surface 603 side of the deck member 60 in the thickness direction, and the outer surface 603 of the deck member 60 is not opened, so the appearance is not unsightly. In addition, since an adhesive such as a bond is put in the dowel holes 602 and 613 and the dowel 63 is inserted, the adhesive overflows from the dowel holes 602 and 613, so that the bonding at the joining surface of the deck member 60 and the digit member 61 is ensured. The strength of the entire pallet is improved.

  The diameter of the dowel 63 is smaller than the inner diameter of the dowel holes 602 and 613 by compression, and the deck member 60 and the digit member 61 cause the dowel 63 inserted into the dowel holes 602 and 613 to absorb the adhesive component. Inflated and bonded. As a result, the adhesive force of the adhesive and the force with which the dowel 63 expands inside the dowel holes 602 and 613 are combined, and the dowel 63 and the dowel holes 602 and 613 are more firmly fixed. Bonding is ensured and the strength of the whole wooden pallet is improved.

  At the time of assembly (manufacturing), the operation of inserting the dowel 63 into the dowel holes 602 and 613 can be performed manually, and the assembly can be facilitated and automation (mechanization) can be facilitated as compared with the case where the dowel 63 is driven.

FIG. 11 is an explanatory view of the forest resource recycling system.
Referring to FIGS. 1 to 11, it will be described forest resources recycling system.

(1) Collect bentwood, including thinned wood, which is a local forest resource.
(2) The bending material is cut into short pieces in accordance with the size of the material constituting the wooden pallet 6 by the above-described method, and the bending degree of the individual short pieces 5 is relaxed.
(3) The short material 5 is processed into a plate having an essentially constant thickness by the sawing apparatus A as described above.

(4) The above-described wooden pallet 6 is made by using a plate-shaped material as the deck member 60.
(5) Recycle by a known processing means such as using the wooden pallet 6 which has been subject to disposal after its useful life has passed or broken.
(6) Forest resources, on the other hand, are used to produce buildings by producing good quality timber, and these are eventually recycled as well.

  In this way, most of the bentwood, including thinned wood that has been abandoned in the forest, is effectively used, and a wooden pallet 6 that can be easily recycled and made of a large amount of wood is expected to be disposed of. By recycling the wooden pallet 6, an excellent forest resource recycling system can be constructed.

  Note that the terms and expressions used in the present specification are merely explanatory and not restrictive, and do not exclude terms and expressions equivalent to the above terms and expressions. The present invention is not limited to the illustrated embodiment, and various modifications can be made within the scope of the technical idea.

The schematic side view which shows embodiment of the sawing apparatus which concerns on this invention. The schematic front view of a lumber apparatus. Explanatory drawing which expressed the lower protruding member by notching a part of the belt of the belt conveyor of a lumber apparatus. Explanatory drawing which shows the state of a cutting part when cutting a short material with a lumber apparatus. The relation between the number of times of sawing and the accuracy of the thickness of the original opening when the raised member is used and when not used in the sawing apparatus is shown, (a) when the raised member is used, (b) when the raised member is not used Graph. The relationship between the number of sawing operations and the accuracy of the center thickness when a raised member is used and when not used in a sawing apparatus is shown, (a) is a graph when the raised member is used, and (b) is a graph when the raised member is not used. . The relationship between the number of sawing operations and the accuracy of the thickness of the end opening when the raised member is used and when not used in the sawing device is shown, (a) when the raised member is used, and (b) when the raised member is not used. Graph. The perspective view of a wooden pallet. Plan view explanatory drawing of a wooden pallet. The principal part sectional drawing which shows the fixation structure of a deck member and a digit member. Explanatory drawing of a forest resource recycling system.

A Sawmill 1 Belt conveyor 10 Base plate 11 Belt 2 Raised member 20 Edge 21 Countersunk screw 3 Band saw device 30 Casing 31 Passing gate 32, 32a Rotating wheel 33 Band saw 330 Tooth part 4 Holding device 40 Arm 41 Air spring 42 Angle adjustment Device 43 Belt device 5 Short material 6 Wooden pallet 60 Deck member 601 Joint surface 602 Dowel hole 603 External surface 61 Digit member 611,612 surface 613 Dowel hole 63 Dowel 64 Gap 65 Insertion part

Claims (2)

A belt conveyor (1), a saw (33) passed through the upper surface of the belt (11) of the belt conveyor (1) at a predetermined interval, and a lower side of the belt (11) of the belt conveyor (1). A sawing device provided with a raised member (2) arranged on the upper side of the tooth portion (330) of the saw (33) in the feeding direction of the belt (11). Use
The process of making a short material (5) by cutting the bent material into short pieces,
Sending the short material (5) onto the belt conveyor (1) and feeding it to the raised member (2) side;
Cutting the short material (5) to a constant thickness with a saw (33),
including,
A method of making plate material from bent material. A belt conveyor (1) for sending the bent material (5)
A saw (33) passed through the belt (11) upper surface of the belt conveyor (1) at a required interval;
Holding means (4) for pressing the bending material (5) against the upper surface of the belt (11),
A sawing device comprising:
A raised member (2) is disposed below the belt (11) of the belt conveyor (1), and the raised member (2) is a tooth portion of the saw (33) in the feeding direction of the belt (11) ( 330)
Sawmill equipment.

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