JP3025662B2 - Wood chip production equipment for wood chip mixed cement board - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manufacturing apparatus for manufacturing wood chips used for wood chip mixed cement boards, also referred to as wood wool cement boards, etc. The present invention relates to an apparatus for manufacturing wood chips for a wood chip mixed cement board which is cut in a direction orthogonal to the wood chips.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for producing wood chips for a wood chip mixed cement board, for example, as shown in FIGS. 6 and 7, a wood chip is provided on a base (not shown) so as to be reciprocally movable. A support 1 for supporting a raw material M of wood cut with a length of the raw material M so that the fiber direction of the raw material M is along the reciprocating movement direction R, and the raw material M is provided on the support 1 and reciprocates the support 1.
A cutter part 2 for cutting a string to form a string-shaped wood chip Sa;
A raw material restraining section 3 is provided on the base to restrain the raw material M supported by the support 1 to the base. The raw material restraining portion 3 includes a pair of pressing members 3a and 3b having a vertical surface perpendicular to the reciprocating movement direction R of the support base 1 and facing each other.

As shown in FIG. 7, a cutter portion 2 is attached to the support base 1 with a slit 4 formed on a support surface of the support base 1 and a cutting edge protruding from the slit 4, and the cutter base 2 moves forward and backward. A saw blade-like groove blade 5 for cutting the raw material M in the fiber direction, and a cutting edge protruding from the slit 4 opposed to the groove blade 5 to be attached to the support base 1 and to move the raw material M when the support base 1 is returned. Flat blade 6 for cutting M in the fiber direction
It is comprised including. When the support table 1 is reciprocated by a driving unit (not shown), the groove blade 5 cuts the raw material M in the fiber direction at the time of forward movement, discharges the string-shaped wood chip Sa from the slit 4, and returns. At times, the flat blade 6 cuts a portion of the raw material M, which was not cut by the groove blade, in the fiber direction and discharges the string-shaped wood chip Sa from the slit 4 to produce so-called wood wool. The wood wool made of the wood chip Sa is then formed into a wood chip mixed cement board in which wood wool and cement are mixed through a well-known manufacturing process.

Conventionally, as shown in FIGS. 8 and 9, for example, as shown in FIGS. 8 and 9, a raw material M of wood is supported so that the fiber direction thereof is along a direction orthogonal to the reciprocating movement direction R of the support table 1, and a cutter is provided. A flat blade 5 is formed from a plurality of slits 4 formed on the support surface of the support base 1 in a direction orthogonal to the reciprocating movement direction R.
There is also known a manufacturing apparatus in which the raw material M is cut in a direction orthogonal to the fiber direction when the support table 1 moves forward and the wood chip is discharged from the slit 4 (for example, Japanese Patent Publication No. Hei 3-10481 published).

[0005]

In this conventional apparatus for producing wood chips for a wood chip mixed cement board, a wood chip Sa manufactured by the former manufacturing apparatus as shown in FIGS. 6 and 7 is used. Is a string-shaped and relatively long, and because it is easy to cut, the length in the fiber direction is not uniform,
When using this to produce wood chip mixed cement board,
Although the wood chip Sa is easily entangled and compressed by a known manufacturing method, the entangled portion is easily swelled, so that there is a problem that it is difficult to make the thickness uniform.
In addition, since the wood chips Sa are easily entangled, it is difficult to make the density of the wood chips Sa uniform, and there is a problem in that the strength of each part varies. In order to solve this, wood chip Sa
Can also be cut by secondary processing, but the number of steps increases, and the manufacturing efficiency deteriorates. In addition, in this conventional wood chip manufacturing apparatus, as shown in FIG. 6, the support table 1 is reciprocated between the support table 1 and the holding members 3a, 3b of the raw material restraining section 3. The gap e is open to prevent the resistance, so that when the raw material M is cut and becomes thinner and thinner, it becomes wood chips K and jumps out of the gap e. There was a problem that the waste was remarkable when it was a tree.

On the other hand, in the latter latter manufacturing apparatus as shown in FIGS. 8 and 9, since a single flat blade 5 cuts a raw material M of wood in a direction perpendicular to the fiber direction, the wood is cut. The length of the piece in the fiber direction can be made uniform.
If the length setting is long, the wood chips become longer in the fiber direction, causing the problem of entanglement as described above. In addition, if the length of the flat blade 5 is set to be somewhat short, the raw material M must be shortened accordingly, so that the manufacturing efficiency per one stroke is deteriorated, and the productivity is inferior.
Since the raw material M must be finely cut, the number of steps increases accordingly, and there is a problem that the manufacturing efficiency is also low in this respect. Therefore, as shown in FIG.
Are arranged in the reciprocating direction R, but the raw material M
Cannot be eliminated, and the length of the support 1 for supporting the raw material M must be lengthened, resulting in an increase in the size of the apparatus.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and is intended to manufacture wood chips having a uniform length in the fiber direction and less entanglement, and to manufacture a large amount of wood chips. An object of the present invention is to provide an apparatus for manufacturing wood chips for a wood chip mixed cement board with improved efficiency.

[0008]

The technical means of the present invention for solving such a problem is to provide a base and a base which is provided so as to be reciprocally movable and which is cut to a required length in a fiber direction. A support for supporting the raw material of the wood so that the fiber direction of the raw material is along a direction perpendicular to the reciprocating movement direction, and a raw material provided on the base and supported by the support and restrained to the base. Production of a wood chip for wood chip mixed cement board, comprising: a raw material restraining portion to be kept; and a cutter portion provided on the support table and cutting the raw material by the reciprocating movement of the support table to form a wood chip. In the apparatus, a slit formed on the support surface of the support base and having a length corresponding to the length of the raw material in a direction perpendicular to the reciprocating movement direction of the support base; When it is attached to the support base by protruding Further, at the time of forward movement of the support base, a forward movement canna blade for cutting the raw material in a direction perpendicular to the fiber direction and discharging wood chips from the slit, and a cutting edge from the slit opposed to the forward movement canna blade. And a return canner blade configured to protrude and be attached to the support table and to cut the raw material in a direction perpendicular to the fiber direction and discharge wood chips from the slit when the support table moves backward, the forward movement canna blade, and arrayed a plurality of flat blade-like part edge having a cutting edge length of a predetermined length obtained by equally dividing the entire length, and a non-cutting portion of a predetermined length obtained by equally dividing the entire length into alternating And the above-mentioned returning canna blade,
It has a flat blade-like full blade having a length extending over the entire length of the forward movement canna blade.

Thus, at the time of forward movement of the support table, the forward canner blade of the cutter portion cuts the raw material in a direction orthogonal to the fiber direction. In this cutting, the forward canna blade is
Since the plurality of partial blades and the non-blade portions are alternately provided, the raw material is cut by a predetermined length of the partial blades with the partial blades. Therefore, a number of wood chips having a constant width in the fiber direction are cut and discharged from the slit. In the backward movement, the backward canner blade of the cutter portion cuts the raw material in a direction perpendicular to the fiber direction. In this cutting, the raw material is partially cut by the partial blade of the forward canna blade,
Since the portion corresponding to the non-blade portion is protruded and remains without being cut, the non-cut portion is cut by all the blades of the reciprocating canner blade. Since the portion corresponding to the non-blade portion has a predetermined length, a large number of wood chips having a constant width in the fiber direction are cut and discharged from the slit.

[0010] If necessary, the number of the plurality of partial blades and the non-blade portion of the forward canna blade are made the same, the partial blades are provided on one left and right end sides, and the non-blade portions are positioned on the other right and left end sides. It has a configuration. In addition, if necessary, the predetermined length of the partial blade and the non-blade portion of the forward canna blade is set to 5 cm to 15 cm. If it is less than 5 cm, the wood chips are too short,
There is a problem that the strength of the wood chip mixed cement board becomes weak . 1
If it is more than 5 cm, the length is too long and entangled parts are generated, and the entangled portion is easily swelled, so that the thickness of the sheet becomes unbalanced. In this case, it is effective to set the predetermined lengths of the partial blades and the non-blade portions of the forward canna blades to 9 cm to 11 cm. With this length, the wood chip length is moderate, handling is easy, the strength of the manufactured wood chip mixed cement board is as high as possible, and entanglement of the wood chip is reliably prevented. The plate thickness becomes uniform.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for producing wood chips for a wood chip mixed cement board according to an embodiment of the present invention will be described below with reference to the accompanying drawings. As shown in FIGS. 1 to 5, in the wood chip manufacturing apparatus for wood chip mixed cement board according to the embodiment, reference numeral 10 denotes a base, 11 denotes a support, and
And supports the raw material M of the wood cut at a required length in the fiber direction so that the fiber direction of the raw material M is along the direction orthogonal to the reciprocating direction R. As shown in FIG. 2, a pair of right and left support stands 11 are provided, and are reciprocated by a drive mechanism 12.

Reference numeral 13 denotes a raw material restraining portion that is provided on the base 10 and restrains the raw material M supported by the support 11 to the base 10. The raw material restraining portion 13 includes a pair of pressing members 13a and 13b having a vertical surface orthogonal to the reciprocating movement direction R of the support base 11 and facing each other. One of the holding members 13a and 13b is capable of moving back and forth in a reciprocating direction R, and is moved back and forth by an air cylinder 14 as shown in FIG. Is pressed against the other pressing member 13b to press it. As shown in FIG. 5, the support base 11 and the holding members 13 a of the raw material restraining portion 13,
A gap e is provided between the support base 13b and the support base 13b so as not to give resistance to the reciprocating movement of the support base 11. In the raw material restraining portion 13, reference numerals 15 denote regulating plates which have vertical surfaces along the reciprocating movement direction R of the support base 11 and face each other to restrict the movement of the raw material M in the fiber direction. The regulating plate 15 is located between the pair of holding members 13a and 13b and
Is provided on the base 10 on the side of the base. The holding members 13a and 13b of the raw material restraining portion 13 and the regulating plate 15 form a storage space 16 in which the raw material M is stored.
Also, as shown in FIG. 2, 17 is a hydraulic cylinder device 18
This is a pressing plate which is moved up and down by the above to press and press the raw material M on the support base 11 from above.

Reference numeral 20 denotes a cutter unit provided on the support table 11 for cutting the raw material M to form a wood chip S by reciprocating the support table 11. As shown in FIGS. 1, 3 to 5, the cutter portion 20 is formed on the support surface of the support base 11 and has a length corresponding to the length of the raw material M in a direction perpendicular to the reciprocating movement direction R of the support base 11. The support 21 is mounted on the support 21 with the cutting edge protruding from the slit 21 and the raw material M is cut in a direction perpendicular to the fiber direction when the support 11 moves forward, and wood is cut from the slit 21. A forward-moving canner blade 22 for discharging the piece S, and a cutting edge protruding from the slit 21 opposing the forward-moving canner blade 22 is attached to the support base 11.
Is cut in a direction perpendicular to the fiber direction to form a slit 21.
And a reciprocating canner blade 23 that discharges the wood chip S from the tool.

The forward canna blade 22 has a total length of the slit 21.
Overall the same as the overall length is formed in a rectangular flat plate shape, the total length, etc.
Dividing a plurality of flat blade-like part edge 24, 24 having a cutting edge length of the predetermined length L (4 divides in the embodiment), a non-blade portion 25, 25 of predetermined length obtained by equally dividing the total length Are alternately arranged in a row. The number of the plurality of partial blades 24 and the non-blade portion 25 of the forward canna blade 22 is set to the same number (the number is set to two in the embodiment), and the partial blades 24
(A) is provided, and the non-blade portion 25 (B) is positioned at the other end on the left and right sides. Partial blade 24 and non-blade portion 2 of forward canna blade 22
The predetermined length L of 5 is set to L = 5 cm to 15 cm. If it is 5 cm or less, the wood chip S is too short, and there is a problem that the strength of the wood chip mixed cement board is weakened . If it is more than 15 cm, the length is too long, and entangled parts appear, and the entangled portion is likely to swell, resulting in an imbalance in plate thickness. Preferably, the predetermined length L is L = 9 cm to 11 c
m, the length of the wood chip S is moderate, the handling is easy, and the strength of the manufactured wood chip mixed cement board is as high as possible. Entanglement is prevented, the plate thickness becomes uniform, and the length is optimal.

The reciprocating canner blade 23 is formed in the shape of a rectangular flat plate as a whole, and has a flat blade-like full blade 26 having a length extending over the entire length of the forward moving canna blade 22. Each canna blade 22,
23, the canner blades 22, 2 from the end opposite to the blade edge.
Several notches 27 for attaching 3 to the support base 11 are formed. On the other hand, the support blade 11 has a canna blade 22,
An inclined seat surface 30 is formed for mounting the blade 23 so that the blade edge protrudes from the slit 21.
0 has a female thread portion 32 into which a bolt 31 to be inserted into the cut 27 of the canner blades 22 and 23 is screwed. The screwing of the bolt 31 fixes the respective canner blades 22 and 23 to the support base 11. Is done. Then, by changing the relative position with respect to the bolt 31, the protrusion dimensions of the blade edges of the canner blades 22 and 23 are adjusted, and thereby the thickness of the wood chip S is determined. The thickness of the wood chip S is set to, for example, about 0.1 mm to 2 mm.

Therefore, when the wood chip S is manufactured by the wood chip mixed cement board manufacturing apparatus according to this embodiment, the wood is previously made to correspond to the entire length of the canner blades 22 and 23. The raw material M is prepared by cutting into a predetermined size. Then, as shown in FIGS. 2, 4 and 5, the raw material M is placed on the support base 11 so that the fiber direction of the raw material M is along the direction orthogonal to the reciprocating direction R of the base 10. The raw material M is stored in an appropriate number in the storage space 16 of the raw material restraining portion 13. Then, one pressing member 13a of the raw material restraining portion 13 is advanced by the air cylinder 14, and the raw material M on the support base 11 is moved to the other pressing member 13b.
And press it down, and the hydraulic cylinder device 1
8, the pressing plate 17 is lowered, and the raw material M on the support base 11 is pressed and pressed from above.

In this state, the support mechanism 11 is reciprocated by operating the drive mechanism 12. Thereby, as shown in FIG. 4, at the time of forward movement, the forward movement canner blade 22 of the cutter part 20 cuts the raw material M in a direction orthogonal to the fiber direction. In this cutting, the forward moving canner blade 22 is formed by the method shown in FIGS.
As shown in FIG. 2, the plurality of partial blades 24, 24 and the non-blade portion 25,
25, the partial blades 24, 24
Thus, the raw material M is cut by a predetermined length L of the partial blades 24, 24. Thereby, as shown in FIG. 4, the wood chip S having a constant width in the fiber direction is cut and discharged from the slit 21. Further, as shown in FIG. 4, at the time of the backward movement, the backward movement canner blade 23 of the cutter section 20 cuts the raw material M in a direction orthogonal to the fiber direction. In this cutting, the raw material M is partially cut by the partial blades 24, 24 of the forward canna blade 22, and the portions corresponding to the non-blade portions 25, 25 are protruded without being cut. The portion that is not cut is cut by all the blades 26 of the reciprocating canner blade 23. Since the portion corresponding to the non-blade portions 25 has a predetermined length L, as shown in FIG. 4, a wood piece S having a constant width in the fiber direction is cut, and the slit 21 is cut.
Is discharged from

That is, the wood chip S has a predetermined length L in the fiber direction. The length H in the direction perpendicular to the fiber direction is random because the thickness and the cutting position of the raw material M are different. Further, since the wood chips S are easily separated along the fibers, the wood chips S may have a suitable width, generally a predetermined length L in the fiber direction, due to agitation during the transportation process or the production of the wood chip mixed cement board. Naturally divided into small widths. In the above-described cutting, a plurality of wood chips S are cut during the forward movement, and a plurality of wood chips S are also cut during the backward movement. Since it is cut, a large number of wood chips S can be manufactured at one time, so that the manufacturing efficiency is extremely high. In this case, the number of the plurality of partial blades 24, 24 of the forward canna blade 22 and the number of the non-blade portions 25, 25 are the same. Therefore, the cutting force can be made equal by reciprocating motion and can be equalized. In addition, since the amount of the wood chips S cut in the forward movement and the backward movement is the same, there is no unevenness in the discharge portion, so that the machine is well-balanced and the machine is hardly overloaded.

When one raw material M is cut and lost, it becomes thin and tends to be discharged from the gap e between the support base 11 and the pressing members 13a and 13b of the raw material restraining portion 13. The thinned raw material M has a gap e
Has a length approximately equal to the width of the surface, and because of the unevenness of the wood, it is difficult to get out of the gap e by being caught easily.
Therefore, most are cut by the canner blade, and only a small amount of wood chips is discharged from the gap e. In addition, even if the raw material M sandwiched between different raw materials M is thinned by cutting, the movement is suppressed by the adjacent raw material M, so that almost all of the raw material M is cut. Therefore, the amount of wood chips discharged from the gap e is extremely small, and waste is reduced. In particular, waste of small-diameter trees is eliminated, and the production efficiency is extremely improved.

When the wood chip mixed cement board is manufactured using the wood chip S thus manufactured, cement and the wood chip S are appropriately mixed by a known means, and a predetermined amount is mixed. It is made into a plate, compressed by a press and solidified to obtain a product. In this case, the wood chip S has a predetermined length L in the fiber direction.
Since it is cut into pieces, the length is uniform, and compared to a case where a string-like and relatively long one is mixed as in the past, it is suppressed that the wood chips S are entangled with each other. Because it is homogeneous, it does not swell,
For this reason, the thickness can be made uniform, and the density of the wood chips S can also be made uniform, thereby preventing a situation in which the parts vary in terms of strength and improving the quality.
Further, since the length of the wood chips S is uniform, the appearance quality of the wood chip mixed cement board is also improved.

In the above embodiment, the numbers and lengths of the partial blades 24, 24 and the non-blade portions 25, 25 of the forward canna blade 22 are not limited to those described above, but may be determined appropriately. good.

[0022]

As described above, according to the apparatus for producing wood chips for a wood chip mixed cement board of the present invention, a plurality of partial blades of the forward canna blade are present at equal intervals. When moving, the partial cutting edge is used for cutting, and when moving backward, all the blades of the reversing canner blade cut the passing portion of the non-edged portion that is not cut by the partial cutting edge. A large number of pieces can be cut at a time, so that the production efficiency can be greatly improved as compared with the related art. Also, even if one raw material is cut and thinned, since the raw material is in the direction orthogonal to the reciprocating direction of the support base,
It has approximately the same length as the width of the gap, and because of the unevenness of the wood, it is difficult to get out of the gap easily by being caught in the gap between the support base and the holding member of the raw material restraining part, In the case of raw materials sandwiched between raw materials, the movement is suppressed by adjacent raw materials even if they become thin,
As a result, most are cut by the canner blades, and only a small amount of wood chips is discharged from the gap. As a result, the amount of wood chips discharged from the gaps is extremely small, and waste is reduced. In particular, there is no waste of small-diameter trees. In this respect, there is an effect that manufacturing efficiency can be improved.

Further, since the wood chip can be cut to a predetermined length in the fiber direction, a wood chip mixed cement board using this wood chip may be a string-shaped and relatively long as in the prior art. Compared to the case of mixing, since the length of the wood chips in the fiber direction becomes uniform, it is possible to suppress the wood chips from becoming entangled with each other. In addition to being able to be uniform, the density of wood chips is also uniform, and it is possible to prevent the occurrence of variations in each part in terms of strength, and it is possible to significantly improve the quality of wood chip mixed cement boards. . Furthermore, since the length of the wood chip is uniform, the appearance quality of the wood chip mixed cement board can be improved.

In the case where the number of the plurality of partial blades and the non-blade portion of the forward canna blade is the same, the partial blades are provided on the left and right ends, and the non-blade portions are located on the left and right other ends, Since the same size wood chips are cut by the reciprocating movement, the resistance can be made equal by the reciprocating movement, and the resistance can be equalized. Further, since the amount of wood chips cut in the forward movement and the backward movement is the same, there is no unevenness in the discharge portion, so that the balance is good, and in this regard, it is possible to prevent the machine from being overloaded. . Also, when the predetermined length of the partial blade and the non-blade portion of the forward canna blade is set to 5 cm to 15 cm, the wood chip does not become too short or too long, and the wood chip mixed cement board is not used. It is possible to prevent a situation in which the strength is weakened, to prevent entanglement, to prevent a situation in which the sheet thickness becomes unbalanced, and to further improve the quality of the wood chip mixed cement board. In particular, the predetermined lengths of the partial blade and the non-blade portion of the forward canna blade are set to 9
When set to cm to 11 cm, the length is moderate, the handling of wood chips is easy, the strength of the manufactured wood chip mixed cement board is as high as possible, and the entanglement of wood chips is prevented. Thus, the thickness can be made uniform and a high quality wood chip mixed cement board can be provided.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a cutter unit of an apparatus for manufacturing wood chip for a wood chip mixed cement board according to an embodiment of the present invention.

FIG. 2 is a front view showing the entire apparatus for manufacturing wood chips for a wood chip mixed cement board according to an embodiment of the present invention.

FIG. 3 is a plan view showing a configuration of a forward canna blade and a backward canna blade of a cutter unit in the apparatus for manufacturing wood chip for a wood chip mixed cement board according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a state in which a forward canner blade and a backward canner blade of a cutter unit are mounted and a tree cut by the cutter unit in the apparatus for manufacturing a wood chip for a wood chip mixed cement board according to an embodiment of the present invention; It is a cross-sectional view shown with a chip.

FIG. 5 is a perspective view showing a main part of the apparatus for manufacturing wood chips for a wood chip mixed cement board according to an embodiment of the present invention, in a state in which raw materials are accommodated.

FIG. 6 is a perspective view of an essential part showing an example of a conventional wood chip production apparatus for wood chip mixed cement boards in a state in which raw materials are accommodated.

FIG. 7 is a perspective view showing a cutter unit according to an example of a conventional wood chip production apparatus for wood chip mixed cement boards.

FIG. 8 is a cross-sectional view of a main part showing another example of a conventional wood chip production apparatus for wood chip mixed cement boards in a state in which raw materials are accommodated.

FIG. 9 is a perspective view showing a cutter unit according to another example of a conventional wood chip production device for wood chip mixed cement boards.

[Explanation of symbols]

 M Raw material S Wood chipping R Reciprocating direction 10 Base 11 Support 12 Drive mechanism 13 Raw material restraint 13a, 13b Pressing member e Gap 14 Air cylinder 15 Restriction plate 16 Housing space 17 Press plate 18 Hydraulic cylinder device 20 Cutter 21 Slit 22 Forward-moving canner blade 23 Backward-moving canner blade 24 Partial blade 25 Non-blade portion 26 Full blade 27 Notch 30 Seat surface 31 Bolt 32 Female screw portion

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-48-2397 (JP, A) JP-A-48-68895 (JP, U) JP-B 3-10481 (JP, B2) JP-B 5-5-2 25843 (JP, Y2) Jikken 63-29522 (JP, Y2) Jikken 50-2639 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) B27L 11/02 B27L 11 / 00

Claims (4)

(57) [Claims] 1. A base, and a raw material of wood which is provided on the base so as to be reciprocally movable and which is cut at a required length in a fiber direction, extends along a direction in which the fiber direction of the raw material is orthogonal to the reciprocating direction. And a raw material restraining portion provided on the base and restraining the raw material supported by the support on the base, and a reciprocating movement of the support provided on the support. A wood chip mixed cement board wood chip manufacturing apparatus having a cutter section for cutting a raw material to form a wood chip, wherein the cutter section is formed on a support surface of the support table. A slit formed in a direction perpendicular to the reciprocating direction and having a length corresponding to the length of the raw material, a cutting edge protruding from the slit is attached to the support table, and the raw material is moved when the support table moves forward. Cutting in the direction perpendicular to the fiber direction A forward canna blade for discharging wood chips from the slit, and a cutting edge protruding from the slit facing the forward canna blade and attached to the support table, and at the time of return of the support table, the raw material is oriented in the fiber direction. And a reciprocating canner blade for cutting wood chips from the slit by cutting in a direction perpendicular to the direction, wherein the forward moving canna blade has a plurality of blades having a predetermined length equal to the entire length. A flat blade-shaped partial blade and a non-blade portion having a predetermined length obtained by equally dividing the entire length are alternately arranged in a row, and the reciprocating canna blade has a length extending over the entire length of the reciprocating canna blade. An apparatus for manufacturing wood chips for a wood chip mixed cement board, characterized by having a flat blade-like full blade. 2. The method according to claim 1, wherein the number of the plurality of partial blades and the non-blade portion of the forward canna blade is the same, the partial blades are provided on one left and right end sides, and the non-blade portions are located on the left and right other end sides. The apparatus for producing wood chips for a wood chip mixed cement board according to claim 1. 3. The wood chip for a wood chip mixed cement board according to claim 1, wherein the predetermined length of the partial blade and the non-blade portion of the forward canna blade is set to 5 cm to 15 cm. Manufacturing equipment. 4. The wood chip for a wood chip mixed cement board according to claim 1, wherein the predetermined lengths of the partial blade and the non-blade portion of the forward canna blade are set to 9 cm to 11 cm. Manufacturing equipment.