JP4445902B2 - Wood board splitting device - Google Patents

Description

  The present invention relates to a wood-based board material dividing apparatus used to divide wood-based board materials such as veneer veneer (hereinafter simply referred to as veneer), MDF (medium fiber board), and ground board into two in the thickness direction. It is about.

Recently, for example, to obtain a veneer whose surface is smoother than that of a normal veneer, or to obtain an ultrathin MDF that cannot be obtained by a conventional method, and further, for example, from sawed wood without producing sawdust. For the purpose of obtaining a thin plate or the like, a technique for dividing these various wood-based plate materials in the thickness direction has been put into practical use. As a practical dividing device, Patent Document 1 previously developed by the present applicant is used. A conveying member having an engaging portion that engages with the thick plate at predetermined intervals in the direction orthogonal to the traveling direction of the thick plate, on at least one side of the passage of the thick plate. A restricting member having a restricting surface for restricting the passage of the thick plate to be equal to or less than or equal to the thickness of the thick plate on both sides of the passage of the thick plate, at least on the side where the conveying member exists, Provided with an intricately regulated surface, and further appropriately shaped cutting edge The cutting edge with the cutting edge directed in the direction opposite to the direction of travel of the wood-based plate material is provided at a position desired to be distributed at the exit of the passage of the wood-based plate material, and the thick plate conveyed by the conveying member is divided. The thing of the structure divided | segmented into two in a thickness direction with a blade exists.
Japanese Patent No. 3025999

  In the dividing apparatus, the significance of providing a regulating member having a regulating surface on both sides of the path of the thick plate is to divide the divided thin plate by regulating the tip crack of the thick plate that is likely to occur immediately before the cutting edge of the dividing blade. It is to prevent the deterioration of the surface (rough skin, etc.), but when the dividing device with such a configuration is used for dividing various wooden boards, the total drag when dividing the wooden boards is divided. Generated on the regulating surface of the regulating member in addition to the split resistance force generated at the cutting edge of the blade (the resistance force combining the splitting resistance force applied to the blade edge and the frictional resistance force generated on both the front and back surfaces of the blade immediately after the blade edge) Therefore, it is necessary to apply a conveying force that exceeds the total drag that is added to the wooden board by the conveying member.

  Thus, when the wooden board material to be divided is extremely soft, since the division resistance is small, the absolute value of the total drag is relatively small, and the necessary conveying force is relatively small. Friction (friction force) between the transport member used for transporting the base plate and the wooden base plate may be utilized, and there is little risk of problems caused by the engagement between the transport member and the wooden base plate. If it is hard, the absolute value of the total drag force becomes excessive, so that it is essential to strengthen the engagement of the conveying member with the wooden board so that a strong conveying force can be applied. Therefore, for example, as exemplified in the majority of examples of the above-mentioned publication, it is necessary to adopt a form in which a large number of piercing bodies are provided on the peripheral surface of the conveying member and the piercing body is pierced and conveyed on a wooden board material. While it has an advantage that a sufficient conveying force can be stably applied, there is a problem that a puncture wound of the piercing body remains on the divided thin plate material.

  If the conveying force sufficient to divide the hard wooden board material is obtained simply by utilizing the friction between the conveying member and the wooden board material, it is preferable because the occurrence of the above problem can be prevented. This method was difficult to realize. That is, for example, by covering the outer peripheral portion of the conveying member with rubber, the friction coefficient between the conveying member and the wooden board can be temporarily increased, but the practicality is low in terms of the durability of the rubber. Therefore, it is realistic to use a pair of all-metal rolls as a transport member having excellent durability, but the friction coefficient between the metal roll and the wooden board is not so large. ) = Μ (friction coefficient) · P (pressing force) In view of the formula, a large pressing force is required to apply a sufficiently large friction force.

  Thus, as a roll having rigidity suitable for the application of a large pressing force, it is usual to use a large diameter roll having a large value of the second moment of section, but a pair of large diameter rolls are used to form a wooden board. With the transport structure, the cutting edge of the split blade can be positioned only slightly away from the closest point of the pair of large-diameter rolls due to the geometric positional relationship between the members. Since it is indispensable to provide restricting members with restricting surfaces on both sides of the path of the wood-based plate material in order to restrict the cracking of the wood-based plate material that is likely to occur immediately before the blade edge, the total drag force is the result. It is inevitable that the absolute value of will be excessive, and the pressing force sufficient to generate the conveying force against excessive total drag will also be excessive, so for example, a wooden board cannot be restored by a pair of large diameter rolls Crushed to , Or, for example split device such as extremely huge, another problem is newly caused.

  The present invention has been developed to solve the problems of the known dividing device, and specifically, a pair of small-diameter rolls are provided on both sides of the passage with the passage of the wood-based board material therebetween. Along with each of the small diameter rolls, a large diameter roll that restricts at least the deflection of the small diameter roll with respect to the vertical direction of the passage, and a movement regulating member that restricts the movement of the small diameter roll in the forward and backward directions with respect to the traveling direction of the wooden board material, Further, at least one of the large-diameter roll and the small-diameter roll located on at least one side of the passage is disposed by engaging a driving member that rotates in a predetermined direction with a desired roll. A wood-based board material, characterized in that a cutting edge having a blade edge portion having a shape oriented in the direction opposite to the traveling direction of the wood-based board material is provided at a position desired to be distributed at the exit of the passage of the wood-based board material of The wood-based board material according to claim 1, wherein the splitting device (Claim 1) and at least each small-diameter roll are long rolls having a length equal to or greater than the width in the direction perpendicular to the traveling direction of the wood-based board material. In the dividing device (Claim 2) and at least each small-diameter roll, a plurality of short rolls divided at appropriate lengths in the axial direction have a length equal to or greater than the width in the direction perpendicular to the traveling direction of the wooden board. The wood-based board material splitting device according to claim 1, wherein the wood-based board material dividing device (Claim 3) is provided, and a small-diameter roll having a smooth peripheral surface in contact with the wood-based board material. A wood-based board dividing apparatus according to claim 2 or claim 3 (Claim 4) and a small-diameter roll in which a suitably shaped fine groove is formed on at least a part of a peripheral surface in contact with the wood-based board. The woody board according to claim 1 or claim 2 or claim 3 6. A splitting device according to claim 5 (Claim 5) and a single large-sized large-diameter roll having a length equivalent to the total length of the small-diameter roll are attached to each small-diameter roll. The wood-based plate material splitting device according to any one of claims (Claim 6) has a length equivalent to the total length of the small-diameter roll, and is a long length serving as a movement restriction member that also functions as a movement restriction member. A wood-based board material splitting device (claim 7) according to any one of claims 1 to 5, wherein a plurality of large-diameter rolls are provided side by side with each small-diameter roll.

  According to the configuration of the invention according to claim 1, since a pair of small-diameter rolls are used as members that engage with the wooden board in order to impart a conveying force to the wooden board, the cutting edges of the split blades are paired with each other. It is possible to position the small-diameter roll at a position close to the closest point, and accordingly, the pair of small-diameter rolls have a function similar to the function of the regulating member in the known dividing device, and the regulating member However, it becomes possible to omit the arrangement of the restricting member, so that the total drag force when dividing the wooden board is reduced as compared with the prior art. In addition, the conveying force against the total drag can also be reduced compared to the conventional case. Therefore, for example, a small-diameter roll is made of durable all-metal, and using the frictional force based on the clamping force that does not damage the wooden board, the thickness direction while stably transporting the wooden board Therefore, it is possible to eliminate the occurrence of the difficulty that the piercing wound of the piercing body remains on the divided thin plate material.

  Moreover, according to the structure of the invention which concerns on Claim 2, while forming a small diameter roll is easy, it is convenient when driving a small diameter roll directly. Furthermore, according to the configuration of the invention according to claim 3, it is convenient to form a narrow groove on the outer peripheral surface of the small-diameter roll so that a tooth pattern applied to the helical gear is formed. According to the configuration of the invention, it is easy to form a small-diameter roll and there is no possibility that any indentation remains on the divided thin plate material. Furthermore, according to the structure of the invention which concerns on Claim 5, it becomes possible to increase the frictional force of a small diameter roll and a wooden board | plate material, and to perform more stable conveyance. Furthermore, according to the configuration of the invention according to claim 6, since the individual members can be formed in a relatively simple form, the structure of the device itself can be relatively simplified. Furthermore, according to the structure of the invention which concerns on Claim 7, arrangement | positioning of a movement control member can be abbreviate | omitted as needed.

  Hereinafter, although this invention is further explained in full detail based on the example of implementation illustrated on drawing, MDF was mentioned as a representative example for the wooden board | plate material to divide | segment, for convenience. Therefore, there is no particular limitation on the conveying direction of the wooden board, but when the wooden board is a single plate or a ground board, from the ease of division due to mechanical anisotropy, It is preferable to convey in a direction orthogonal to the fiber direction or generally in a direction orthogonal.

  FIG. 1 is a schematic side view of a wood-based board material splitting device according to the present invention, and FIG. 2 is a side partial enlarged explanatory view of a main part of the split device illustrated in FIG. In the figure, reference numerals 1 and 1 denote a pair of all-metal small-diameter rolls arranged on both sides of the wood-based board material with the passage of the wood-based board material in the traveling direction of the wood-based board material 6 (MDF in the illustrated example). The wood board 6 is rotated in the direction of the arrow shown in the figure through a large-diameter roll 2 which is driven by drive members 4 and 4 which will be described later. To the wooden board 6 in the vicinity of the cutting edge 5a of the divided blade, which will be described later (the closest approach point of the small-diameter rolls 1 and 1). Depending on the relative positional relationship of the split blade with the cutting edge 5a, a corresponding clamping force may also act on the divided thin plate materials 6a and 6b as a secondary), and wood that is likely to occur immediately before the cutting edge 5a of the split blade The tip crack of the system board material 6 is suppressed.

  2 and 2 are large-diameter rolls pivotally attached to a pivot member (not shown) so as to be positioned behind each of the small-diameter rolls 1 and 1 (opposite to the path of the wood-based plate material). The length of each of the small-diameter rolls 1.1 is approximately the same as the total length of the small-diameter rolls 1.1, and restricts the bending of the small-diameter rolls 1.1 with respect to the vertical direction of the path of the wood-based plate material. The driving force is transmitted to the small-diameter rolls 1.1.

  3a and 3b are the front side and the rear side of each of the small-diameter rolls 1 and 1 (front and rear with respect to the traveling direction of the wooden board 6 and the upper side in the traveling direction is referred to as the front side, and the lower side in the traveling direction is referred to as the rear side). It is a separate front and rear type movement restricting member fixed to a support member (not shown) so as to be positioned, and restricts the movement of the small-diameter rolls 1 and 1 with respect to the traveling direction of the wooden board 6.

  Reference numerals 4 and 4 are drive members which are composed of an electric motor with a reduction gear, a servo motor, and the like, and are fixed to a support member (not shown). The small diameter rolls 1 and 1 are moved in the direction of the arrow through the large diameter rolls 2 and 2. Drive to rotate.

  5 is a large-sized split blade having a cutting edge portion of an appropriate shape (single-blade type in the illustrated example), and the cutting edge 5a directed in the direction opposite to the traveling direction of the wooden board 6 is at the exit of the path of the wooden board It is fixed to a support member (not shown) so as to be located at a desired position in the distribution form, and the wooden board 6 is divided into two in the thickness direction to form two thin boards 6a and 6b.

  The wood-based board material splitting device according to the present invention is configured as described above, for example, and the small-diameter rolls 1 and 1 are illustrated by the arrows of the small-diameter rolls 1 and 2 through the large-diameter rolls 2 and 2 by driving the drive members 4 and 4. When the wood board 6 is inserted into the entrance of the passage of the wood board formed between the small diameter rolls 1 and 1, the wood board 6 sandwiched between the small diameter rolls 1 and 1 is shown in the figure. In the process of being conveyed in the direction of the arrow, the blade is divided into two in the thickness direction by the blade edge 5a of the divided blade located at the exit of the passage of the wood-based plate material, and is carried out as two thin plate materials 6a and 6b. However, the small-diameter rolls 1 and 2 are bent by the large-diameter rolls 2 and 2 with respect to the vertical direction of the path of the wooden board, and the small-diameter rolls 1 with respect to the moving direction of the wooden board 6 by the movement restriction members 3a and 3b.・ Restricting movement before and after 1 Since it has, the location of the small-diameter rolls 1, 1 is always guaranteed to the predetermined position.

  As described above, when the wooden board 6 is divided into two in the thickness direction, the state in which the small diameter rolls 1 and 1 sandwich the wooden board 6 is maintained in the vicinity of the cutting edge 5a of the split blade. Further, it is possible to suppress the cracking of the wood-based plate material 6 that is likely to occur immediately before the cutting edge 5a of the dividing blade, and it is possible to omit the arrangement of the regulating member in a known dividing apparatus. The total drag force when dividing the wooden board 6 can be reduced compared to the conventional case, and the conveying force against the total drag can also be reduced compared to the conventional case. Therefore, for example, the small-diameter rolls 1 and 1 are made of durable all-metal, and the wooden board 6 is stably conveyed by using a frictional force based on a clamping force that does not damage the wooden board 6. However, it is possible to divide into two in the thickness direction, and it is possible to eliminate the difficulty of the known dividing device, that is, the difficulty that the piercing wound of the piercing body remains on the divided thin plate members 6a and 6b.

  FIG. 3 is an explanatory schematic side view of another embodiment of the wood-based board material splitting device according to the present invention. The long large-diameter roll 2 in the embodiment illustrated in FIGS. In place of 2, a plurality of grooves 7a continuous in the circumferential direction are formed at appropriate intervals in the axial direction, and four long grooves are provided for arranging the grooves 7a alternately. The large-diameter rolls 7, 7, 7 and 7 are pivotally attached to a pivotal support member (not shown). The basic operation and effect of the apparatus itself are shown in FIGS. The function and effect of the embodiment illustrated in Fig. 2 are the same, but the function of regulating the bending of each small-diameter roll with respect to the vertical direction of the path of the wooden board and the movement of the small-diameter roll before and after the traveling direction of the wooden board The function to regulate can be combined with a long grooved large-diameter roll, so movement regulation is not necessarily required There is no need to prepare a separate material, and the illustration is omitted, but each small diameter roll is placed at both ends so that each small diameter roll does not fall or float (if the device is installed horizontally) and stays in the desired position. However, the design may be changed to a lightly supported form.

  FIG. 4 is a schematic side view of still another embodiment of the wood-based board material dividing apparatus according to the present invention, and is a long large-diameter roll 2 in the embodiment illustrated in FIGS. -Instead of 2, a long grooved large-diameter roll 12 formed by forming a plurality of grooves 12a continuous in the circumferential direction at appropriate intervals in the axial direction can be pivoted to a pivot member or the like (not shown). In addition to the front and rear separate movement restriction members 3a and 3b, separable assembly-type movement restriction members 13a and 13b are inserted into the grooves 12a of the long grooved large-diameter roll 12 from the front side. It is provided with being fixed to a support member (not shown) by intervening, and instead of the large single-edged split blade 5, a small double-edged split blade 15 having a blade edge 15 a is used as a blade support member 14 and a cutter presser 14 a. And is attached to the predetermined position in a replaceable manner, and the device itself The basic actions and effects are the same as those of the embodiment illustrated in FIGS. 1 and 2, but the movement restricting members 13a and 13b are replaced with the grooves 12a of the long grooved large-diameter roll 12. In this configuration, a space is created on the rear side, and the replacement of the split blade 15 is facilitated.

  In addition, as shown in each of the illustrated embodiments, a small-diameter roll can be easily formed as a small-diameter roll provided with a long roll having a length equal to or greater than the width in the direction perpendicular to the traveling direction of the wooden board. In addition, it is convenient when driving directly as described later. However, if necessary, a plurality of short rolls divided into appropriate lengths in the axial direction can be divided into widths in the direction perpendicular to the traveling direction of the wooden board. (Adjacent rolls need to be provided close enough that they do not hinder the cracking of the wood-based plate material). With such a division type, as will be described later, it is convenient to form a narrow groove on the outer peripheral portion so that a tooth shape applied to a helical gear is formed.

  In addition, as shown in each of the illustrated embodiments, if a small diameter roll having a smooth peripheral surface in contact with the wooden board is used, the small diameter roll can be easily formed. As illustrated in FIG. 6, an appropriate shape (for example, the cross section in the direction perpendicular to the axis is substantially semicircular, substantially triangular, substantially semi-elliptical, substantially semi-oval, etc.) is provided on at least a part of the peripheral surface that abuts the wooden board. The small diameter rolls 10 and 11 having the narrow grooves 8 or 9) can be used. If configured in this manner, the frictional force between the small diameter roll and the wood-based plate material can be increased, and the more stable. It becomes possible to carry.

  Although not shown in the drawing, if necessary, if the narrow groove is formed so that the remaining portion of the narrow groove has the same shape as the tooth shape of the appropriately shaped gear, in other words, the outer peripheral portion If a narrow groove is formed in at least a part of the groove so as to form an appropriately shaped gear tooth shape continuous in the circumferential direction, not only the frictional force between the small-diameter roll and the wooden board is increased, but also the small-diameter roll It is effective because the rotation of the small-diameter roll can be performed more reliably by providing a large-diameter roll with a tooth mold that engages with the tooth mold on the outer periphery, and in particular, it is divided into appropriate lengths in the axial direction. When three or more short-sized small-diameter rolls are provided, it is convenient to rotationally drive the small-diameter rolls located at portions other than both end portions. As the shape of the tooth shape, a tooth shape applied to a helical gear is preferable from the viewpoint of smooth rotation. In this case, the thrust action can be offset, which is beneficial. However, the present invention is not necessarily limited, and even a tooth shape applied to a spur gear may be practically used.

  In addition, as shown in the illustrated embodiments, as the large-diameter roll, a long roll having a length equivalent to the entire length of the small-diameter roll is used, and the small-diameter roll is rotationally driven through the long large-diameter roll. This is advantageous because it facilitates the arrangement of the drive member, and as described above, by appropriately forming the gear tooth shapes of the gears on both outer peripheral portions and engaging them, the rotation drive can be ensured. However, if necessary, an appropriate number of short large-diameter rolls divided into appropriate lengths in the axial direction are arranged in series over a length substantially equal to the length of the small-diameter rolls. Unlike the case where a plurality of short small-diameter rolls are arranged in series, there is no need to provide adjacent rolls in close proximity to each other, and there is no hindrance to regulation of the deflection of the small-diameter roll. If the range is large During the roll, no problem be adopted a configuration provided with a gap sufficient to interpose the bearing member or the like. Of course, there is no problem with the configuration in which the small-diameter roll is directly driven, or the configuration in which both the large-diameter roll and the small-diameter roll are driven, particularly when the width of the wood-based plate material in the direction perpendicular to the traveling direction is relatively narrow. Even if the small-diameter roll is directly driven, there is little risk of problems associated with twisting of the small-diameter roll, and it is convenient because the small-diameter roll can be driven more accurately. In any case, it is desirable that both of the pair of small-diameter rolls are rotationally driven in view of the accuracy of conveyance.

  Next, to describe the relative position between the pair of small diameter rolls and the cutting edge of the split blade, in order to prevent a tip crack that is likely to occur immediately before the cutting edge of the split blade, when pressing the wood-based plate material near the cutting edge with a small diameter roll, In order to reduce the amount of compression of the wooden board material by the small-diameter roll as much as possible and prevent excessive frictional resistance from being generated on both the front and back surfaces of the blade immediately after the blade edge, as illustrated in FIGS. , Each of the small-diameter rolls 5 with respect to a line Y connecting the central axes of the pair of small-diameter rolls 1 and 1 is provided with the division blade 5 having the cutting edge angle α at a position desired to be equally distributed at the exit of the passage of the wooden board. A pair of a pair of blades such that the angle β at which the line Y1 connecting the central axis of 1 · 1 and the blade edge 5a of the divided blade intersects and the blade edge angle α of the divided blade satisfy α / 2> β> α / 4. It is preferable to determine the relative position between the small diameter roll and the cutting edge of the split blade. Since the quality plate material is a material having elasticity to some extent, the relational expression α / 2> β> α / 4 does not necessarily indicate a strict limit value, and a slight error is allowed as an allowable range. .

  Thus, the specific diameter dimension (thickness) of the small-diameter roll is described. The function of stably transporting the wooden board material, including the most advanced insertion, and the regulation in the known dividing device In order to combine the functions of the members, it is inappropriate to use too thin or too thick, and depending on the nature of the wood-based board material to be processed, the appropriate thickness is slightly different, but as a rough guide Is preferably in the range of 25 mm to 10 mm, more preferably in the range of 19 mm to 13 mm.

  In addition, as shown in the embodiment of FIG. 3, if the configuration includes a plurality of grooved large-diameter rolls arranged in a staggered manner, the arrangement of the movement restricting member can be omitted, but the minimum required The number is sufficient and the structure can be simplified, but the large-diameter roll to be used is not limited to the grooved large-diameter roll and is not shown in the figure, but for example, it has sufficient rigidity to restrict the deflection of the small-diameter roll. The inner large-diameter roll (medium-diameter roll) directly engaging with the small-diameter roll and the thicker outer large-diameter roll engaging with the inner large-diameter roll in two stages. According to the structure provided in piles, it is not always necessary to use a grooved large-diameter roll.

  In addition, the form of the movement restricting member is not particularly limited, and in short, any form that restricts the movement of the small-diameter roll in the forward and backward directions with respect to the traveling direction of the wooden board material is sufficient, particularly as in the embodiment of FIG. If it is configured to have a large-diameter roll that also serves as a movement restricting member, a support member that intervenes through a sliding bearing (not shown) that engages both ends of each small-diameter roll or in a groove portion of a grooved large-diameter roll It is also possible to omit the arrangement of the movement restricting member simply by lightly supporting each small-diameter roll via (not shown) or the like.

  1, 2, and 3 exemplify a mode of using a large single-blade type split blade suitable for re-polishing, but the split blade is omitted from illustration, but is large 4 or a small replaceable blade shape suitable for disposable use (preferably a double-blade type) as illustrated in the embodiment of FIG. Further, the cutting edge angle α may be a cutting edge angle (17 ° to 23 °) comparable to that of a cutting blade used in a single plate cutting machine such as a rotary lace or a slicer. In this case, since there are no super-hard parts such as knots and solidified fat existing in the single plate or the ground plate material, the edge angle α is much smaller than the usual minimum angle of 17 ° (−2 ° to -3 °) It was confirmed that there was little risk of blade spilling even when set. Of course, in order to ensure the durability of the cutting edge portion, a technique for performing a finish polishing of the fine portion of the cutting edge portion at a somewhat wide angle may be adopted as necessary.

  Further, as in the embodiment of FIGS. 1, 2, and 4, by attaching a single (or substantially single) large-diameter roll 2, 2, 12, 12 to each small-diameter roll 1, 1, When restricting the bending of the small-diameter rolls 1 and 1 with respect to the vertical direction of the passage of the wood-based board material, the central axes of the small-diameter rolls 1 and 1 are connected as the arrangement positions of the large-diameter rolls 2 and 12 and 12 and 12. The line Y is not limited to the position where the central axis of the large-diameter rolls 2, 2, 12, 12 is positioned on the extended line of the line Y, but is a line slightly inclined with respect to the line Y for the reason described below. A configuration in which the central axes of the large-diameter rolls 2 and 12 and 12 and 12 are positioned on the extended line of Y2 may be positively adopted.

  That is, since the regulation of movement of each small-diameter roll 1.1 during rotation depends solely on the front-side movement regulating members 3a and 13a from the rotation direction of each small-diameter roll 1.1. A frictional resistance is inevitably generated between the small-diameter rolls 1 and 1 and the front movement restricting members 3a and 13a. However, in order to reduce the frictional resistance, it is effective to positively adopt the above configuration. Further, for example, when each of the small diameter rolls 1 and 1 is provided with the blade edge 5a of the divided blade positioned at a position where the thin plate materials 6a and 6b divided together with the wooden board 6 are also pressed, 1 is slightly bent in the vertical direction of the blade surface 5b or the blade back surface 5c of the split blade 5 (name in the case of a single-blade type). It is effective to actively adopt

  However, if the central axes of the large-diameter rolls 2, 2, 12, 12 are positioned on the extended line of the line excessively inclined with respect to the line Y connecting the central axes of the small-diameter rolls 1, 1, the wood system Since there is a possibility that the bending of the small diameter rolls 1 and 1 with respect to the vertical direction of the passage of the plate material cannot be properly controlled, the line Y2 (substantially connects the central axis of the small diameter roll and the central axis of the large diameter roll). It is preferable that the inclination angle δ of the line) with respect to the line Y is not excessively wide. As a rough guide based on experiments, assuming that the friction coefficient between the small-diameter roll and the large-diameter roll is μ, the inclination that satisfies the relationship of sin δ≈μ Although the angle is appropriate, the angle sin δ≈μ does not limit the absolute relationship because the angle β itself is not constant, and a corresponding difference is included in the allowable range.

  In each of the above embodiments, each small-diameter roll, each large-diameter roll, a movement restricting member, and the like are configured to be fixed. Naturally, it is possible to adopt a structure that can be displaced and fixed at a desired position in a timely manner so that it can cope with the case where the plate thickness itself changes). A structure that allows fine movement in the vertical direction of the path of the system board material or a direction that follows the vertical direction and that uses a pressing member such as a splaying / fluid cylinder, etc., to simultaneously press the members against the wooden board material is adopted. Thus, an error in the thickness of the wooden board material may be allowed. Further, as exemplified in the respective embodiments, if the form of each small diameter roll, each large diameter roll, the movement regulating member, etc. is symmetrical with respect to the path of the wood-based board material, the replacement when each member is consumed is possible. Although convenient, the symmetry of the form is not an essential condition, and even if the form of each member is asymmetric with respect to the passage of the wood-based board material, there is no particular problem in terms of functionality.

  Since the puncture wound of the piercing body does not remain in the divided thin plate material, the utility value of the divided thin plate material is improved compared to the conventional one, and the divided thin plate material can be diverted to applications that were not suitable in the past. The use of is expanded.

It is a schematic side view of the wood-based board material dividing apparatus according to the present invention. FIG. 3 is an enlarged side view of a main part of the main part of the dividing apparatus illustrated in FIG. 1. It is a schematic side explanatory drawing of the other Example of the division | segmentation apparatus of the wood type board | plate material which concerns on this invention. It is a schematic side explanatory drawing of another Example of the division | segmentation apparatus of the wood type board | plate material which concerns on this invention. It is front explanatory drawing of the small diameter roll used for the division | segmentation apparatus of the wood type board | plate material which concerns on this invention. It is front explanatory drawing of the small diameter roll used for the division | segmentation apparatus of the wood type board | plate material which concerns on this invention.

Explanation of symbols

1.10.11: Small diameter roll 2. Large diameter rolls 3a, 3b: Front and rear separate type movement regulating member 4. Drive member 5. Large split blade 6. Wood-based plate materials 6a, 6b. Divided thin plate materials 7.12. : Grooved large-diameter rolls 7a and 12a: Grooves 8 and 9: Fine grooves 13a and 13b: Assembly-type movement restricting member 14: Blade support member 14a: Tool holder

Claims (7)

  A pair of small-diameter rolls are provided on both sides of the passage, separated from each other by a path of the wooden board, and at least a large-diameter roll that restricts the deflection of the small-diameter roll with respect to the vertical direction of the path, and the traveling direction of the wooden board A movement restricting member that restricts the movement of the small-diameter roll before and after is attached to each small-diameter roll, and at least one of the large-diameter roll or the small-diameter roll located on at least one side of the passage is in a predetermined direction. A drive member that is driven to rotate is arranged in engagement with a desired roll, and the cutting edge having a blade edge portion with an appropriate shape is directed to the direction opposite to the traveling direction of the wooden board material. A wood-based board material dividing device, characterized in that it is provided at a desired position in the form of a distribution at the exit of the passage.   The wood-based board material dividing device according to claim 1, wherein at least each small-diameter roll is a long roll having a length equal to or greater than the width in the direction orthogonal to the traveling direction of the wood-based board material.   At least for each small-diameter roll, a plurality of short rolls divided for each appropriate length in the axial direction are arranged in series over a length equal to or greater than the width in the direction perpendicular to the traveling direction of the wooden board. 2. The wood-based board material splitting apparatus according to claim 1.   4. The wood-based board material dividing apparatus according to claim 1, 2 or 3, wherein a small-diameter roll having a smooth peripheral surface in contact with the wood-based board material is used.   4. The wood-based board material dividing apparatus according to claim 1, 2 or 3, wherein a small-diameter roll having a suitably shaped narrow groove formed on at least a part of a peripheral surface in contact with the wood-based board material.   The wood-based board material according to any one of claims 1 to 5, wherein a single large long-diameter roll having a length equivalent to the entire length of the small-diameter roll is attached to each small-diameter roll. Splitting device.   A plurality of long large-diameter rolls having a length equivalent to the entire length of the small-diameter roll and also serving as a movement-regulating member are attached to each small-diameter roll. The wood-based board | plate material division | segmentation apparatus as described in any one of Claims 5.

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