JP3025999B2 - Plate splitting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thick plate dividing apparatus.

[0002]

2. Description of the Related Art In general, veneer veneer (hereinafter simply referred to as veneer) is cut from a log by a veneer lathe or the like. At this time, if the log is cracked before the cutting edge of the cutting blade intervenes due to the unilateral bending of the veneer following the cutting edge shape of the cutting blade, proper cutting can be achieved. However, since the so-called rough surface such as eyelash occurs, the existing veneer cutting machine employs a configuration in which a pressing member such as a pressure bar is used to press the vicinity of the boundary between the log and veneer. However, as is clear from the fact that most veneers to be cut have back cracks, which are the remains of pre-cracks,
It is known that the preventive effect of the above configuration is not always perfect. By the way, the blade angle of the veneer race knife is
According to JIS standard B4708, 19-23 ゜ ± 1 ゜
Stipulated. Such roughening of the veneer causes inconvenience, for example, the necessity of excessive consumption of the adhesive at the time of bonding or the necessity of excessive removal of the veneer surface at the time of finishing the surface. For this reason, various countermeasures have been attempted in the past, but, for example, those that previously heat the raw wood to expand its flexibility and facilitate refraction of the veneer are the equipment costs and operation required for heating. It has the disadvantage that the cost etc. is expensive, and for example, the one that sharpens the cutting edge angle of the cutting blade and reduces the degree of refraction of the veneer is used when cutting hard parts such as nodes of raw wood. However, there is a disadvantage that the cutting edge of the cutting blade is easily damaged.For example, the log side of the cutting edge of the cutting blade is polished into a refraction surface shape, a part of which is destroyed in the raw wood, and the degree of refraction of the veneer is determined. The only thing that can be reduced is the use of cutting blades when cutting hard logs as a whole. There bent press the veneer side, such as the thickness of the veneer is irregular, were both advantages and disadvantages. Therefore, the applicant of the present invention has proposed a method for producing a veneer veneer having a smooth one side and an apparatus for producing the veneer veneer.
As disclosed in Japanese Unexamined Patent Publication (Kokai) No. 2-202401, a unique production method capable of producing a veneer with one side smoother than before has been developed. Specifically, a thick veneer cut from a log has been developed. By dividing into two in the thickness direction using a dividing blade,
In producing two veneers, each of the two veneers is divided in a state where it is refracted from the thick veneer following the cutting edge of the dividing blade. A method for making a simple veneer was proposed. According to such a unique preparation method, both of the two veneers to be prepared are divided while being refracted from the thick veneer in accordance with the cutting edge of the dividing blade. Even if the cutting edge angle of the split blade used is equal to the cutting edge angle of the cutting blade of the veneer, the degree of refraction of each veneer becomes smaller (for example, if two veneers are evenly refracted, Since a single-plate shaving machine is）), the generation of cracks is suppressed, and it is possible to obtain a veneer with a smoother one side than ever before. Since the texture (orientation of the fiber) is almost the same as a whole, as will be described later, especially when at least a part of the grain of each veneer is not straight, its use is expanded and the utility value is improved. I do. In other words, ordinary plywood has a configuration in which the thickness and the general fiber direction of a pair of veneers located symmetrically with respect to the center in the thickness direction are aligned for each pair, As long as the grain of each veneer is almost straight, the distortion of the plywood will not be a problem even if the grain of the veneer is not considered. For veneers that have been cut from raw wood where at least some of the fibers have been remarkably non-straight, the frequency of use has been increasing with the depletion of timber resources. Since at least a part of the non-through straight grain, such as the wavy grain, which is collectively referred to as the so-called mating grain, is present at least in part, if it is used in combination with another veneer at random, the plywood may be warped or wavy. This is a factor that causes distortion. More specifically, when a large amount of a solvent such as water contained in a thermosetting adhesive frequently used for plywood is released from the adhesive with hot pressure, the adhesive significantly shrinks and cures. Inevitably, a veneer is subject to compressive force,
As is well known, veneer is a unique material having remarkable strength anisotropy (relatively tough in the fiber direction, but extremely weak in the orthogonal direction). The veneer subjected to the compressive force contracts exclusively in the direction perpendicular to the fiber direction. In this case, if the grain of each veneer is almost entirely straight, the grain of the pair of veneers located symmetrically with respect to the center in the thickness direction of the plywood is almost entirely. In agreement, the contraction direction of each local part on both sides of the center is almost the same, so there is no possibility that distortion will be induced in the plywood, but at least a part of the veneer with the embedded grain is randomly When used in combination with another veneer, the grain does not match and the direction of local contraction differs on both sides of the center, resulting in distortion of the plywood become. Therefore, such veneers in which at least a part of the inner surface of the grain are present are conventionally referred to as low-quality veneers. Its use is limited, for example, or for use as a core board of relatively low-quality plywood, and its utility value is extremely low. Therefore, the present applicant has previously described "plywood with less distortion and a method for manufacturing the plywood."
(JP-A-2-185402), a configuration is adopted in which at least a pair of veneers at symmetric positions with respect to the center in the thickness direction of the plywood are aligned at substantially the same position. Developed and proposed an invention mainly based on plywood, with a corresponding effect in suppressing distortion, and succeeded in increasing the utility value of veneer that was conventionally low quality, but simply cut veneer from raw wood In the conventional well-known cutting method, the diameter of the raw wood from which a desired pair of veneers can be easily obtained is limited to an extremely narrow range, so that it is difficult to obtain a large number of desired pairs of veneers. On the other hand, according to the above-mentioned unique preparation method, as described in the characteristics thereof, it is very convenient because it can be easily obtained.

[0003]

SUMMARY OF THE INVENTION The present invention aims to provide an apparatus for dividing a thick plate capable of easily carrying out a method for producing a unique veneer having various advantages as described above. A conveying member having an engaging portion that engages with the thick plate at predetermined intervals in a direction orthogonal to the direction of travel of the thick plate on at least one side of the path of the thick plate; To, a regulating member having a regulating surface for regulating the passage of the thick plate to be equal to or less than the thickness of the thick plate, at least on the side where the conveying member is present, the engaging portion and the regulating surface are intertwined. Equipped, further divided blade having a suitably shaped blade edge,
The present invention proposes a splitting device for a thick plate, wherein a cutting edge directed in a direction opposite to a traveling direction of the thick plate is provided at a position facing the outlet of the passage of the thick plate in a distributed manner. In addition, a plurality of examples described below are proposed as more specific examples or more preferable examples of the dividing device. One of the actual examples is a regulating bar whose regulating surface is substantially non-displaceable, and a regulating bar whose regulating surface is elastically displaceable, as a regulating member, and a side opposite to one of the sides of the thick plate passage. At the same time, on either side of the two regulating bars, grooves of an appropriate width are provided at predetermined intervals in the direction perpendicular to the direction of travel of the thick plate, and further, at predetermined intervals in the axial direction. A puncture conveyance roll having a large number of piercing bodies arranged in the rotation direction and driven and rotated in the traveling direction of the thick plate via a drive source is used as a conveyance member, and the piercing body is a thick plate passage through the groove. This is a thick plate dividing device which is prepared for a position where the pressure reaches the maximum value. Another example is that, in the above-mentioned thick plate dividing device, a groove having an appropriate width is provided at a predetermined interval in a direction orthogonal to the traveling direction of the thick plate, on a restriction bar opposite to a restriction bar already having a groove. A new roll is provided, and a transport roll that has an engaging portion that engages with the thick plate at predetermined intervals in the axial direction, and is driven and rotated in the traveling direction of the thick plate via a drive source,
A thick plate dividing device separately provided at a position where the engaging portion reaches the path of the thick plate via the newly provided groove portion.
Still another example is a thick plate dividing device provided with regulating bars on both sides of the thick plate passage, wherein at least one of the thick plate passages has an outlet side slightly narrower than an inlet side. Is a thick plate dividing device in which the regulating surface of the regulating bar is slightly inclined with respect to the passage of the thick plate. Yet another example is
A regulating bar whose regulating surface is substantially non-displaceable is used as a regulating member, and provided on one side of the thick plate passage, and a large number of piercing bodies arranged in the rotation direction at predetermined intervals in the axial direction, And a ring-shaped elastic body, which is located at a position lower than the tip of the piercing body by a height less than the thickness of the piercing body, in the gap between the rows of piercing bodies, The puncture control roll driven and rotated in the traveling direction is used as a transfer member also serving as a control member, and on the side opposite to the control bar, the distance between the control surface of the control bar and the ring-shaped elastic body is equal to the thickness of the thick plate. This is a thick plate dividing device provided at a position below.
Still another example is a thick plate dividing device provided with the piercing regulating roll as a conveying member also serving as a regulating member, wherein a regulating bar has an appropriate width positioned at predetermined intervals in a direction orthogonal to the direction of travel of the thick plate. And a transport roll driven and rotated in the direction of travel of the thick plate via a drive source, and provided with an engaging portion which engages with the thick plate at predetermined intervals in the axial direction. The thick plate dividing device is provided separately at a position where the engaging portion reaches the passage of the thick plate. Still another example is a thick plate dividing device that employs a configuration including the transport roll separately.
This is a thick plate dividing device using as a transport roll a piercing transport roll provided with a large number of piercing bodies arranged in the rotation direction as engaging portions. Still another example is a thick plate dividing device that adopts each of the above-described configurations, in which the cutting edge angle of the dividing blade is set to a thick plate dividing device.
This is a thick plate dividing device formed so as to be sharper than the cutting edge angle of a cutting blade of a single plate grinding machine located at a position higher than the cutting edge.

[0004]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in further detail with reference to an embodiment illustrated in the drawings. 1 and 2, reference numeral 1 denotes a regulating bar whose regulating surface 2 is substantially non-displaceable, and a regulating surface 4 and a regulating surface 2 of a regulating bar 3 to be described later are larger than the thickness of the thick plate 9. It is supported by the support member 13 so as to face each other at a narrow interval, and while pressing the position of the thick plate 9 in a fixed manner, it presses the vicinity of the boundary between the thick plate 9 and the single plate 9a to divide it. The generation of cracks due to cracks is suppressed. 3
Is a restricting bar in which the restricting surface 4 is elastically displaceable, and the supporting member 14 is arranged so that the restricting surface 2 and the restricting surface 4 of the restricting member 1 face each other with a space slightly smaller than the thickness of the thick plate 9. The thickness of the thick plate 9 is controlled elastically so that the thickness error of the thick plate 9 is absorbed (allowed) by the elastic fine movement of the regulating surface 4 in the direction of the arrow in the figure. The vicinity of the boundary between the plate and the veneer 9b is pressed to suppress the occurrence of cracks due to the division. 5 is a groove portion of an appropriate width located at predetermined intervals in a direction orthogonal to the direction of travel of the thick plate of the regulating bar 3, and a piercing body 6a of a piercing transport roll 6 described later is
Provide room to intervene in the plank path. Reference numeral 6 denotes a piercing transport roll having a large number of piercing bodies 6a arranged in the rotation direction at predetermined intervals in the axial direction.
The piercing body 6a is provided to reach the path of the thick plate via the slab. The piercing body 6a is provided with a driving force (not shown) including a motor or the like in a direction indicated by an arrow in the drawing to apply a conveying force to the thick plate 9.
In detail, the piercing transport roll 6 has a circular saw-shaped engaging member 6b provided with a large number of piercing bodies 6a on its outer periphery and a ring-shaped spacer 6d alternately fitted on the shaft portion 6c, and a key. It is configured to be fixed at a predetermined position by a fixing means such as a stop and a nut, so that the engaging member 6b
Can be easily dealt with by abrasion of the piercing body 6a simply by replacing the piercing body 6a at any time, which is more rational than the case where the piercing body 6a is integrally formed with the shaft portion 6c. Reference numeral 10 denotes a double-edged split blade, which is provided with a cutting edge directed in a direction opposite to the traveling direction of the thick plate facing the outlet of the passage of the thick plate (in the example, a uniform sort shape). The passing thick plate 9 is divided into two in the thickness direction. The apparatus for dividing a thick plate according to the present invention is, for example, configured as described above. The thick plate 9 cut from a log by a veneer cutting machine is used to separate the thick plate 9 from the regulating surface 2 of the regulating bar 1 and the regulating bar 3.
If the thick plate 9 is carried into the passage of the thick plate formed by the regulating surface 4, a conveying force can be applied to the thick plate 9 by the piercing conveyance roll 6, and the thick plate 9 is divided in the process of being conveyed in the arrow direction shown in the figure. The two single plates 9a and 9b can be formed by dividing into two in the thickness direction by the blade 10, but as is clear from the figure, the cutting edge of the divided blade 10 is distributed to the outlet of the passage of the thick plate. The two veneers 9a and 9b
Are divided in a state where they are refracted following the cutting edge of the dividing blade 10. Therefore, even if the split blade 1
Even if the blade edge angle of 0 is equal to the blade edge angle of the cutting blade of the single-plate grinding machine, the degree of refraction of each of the single plates 9a and 9b becomes smaller than before, so that the occurrence of cracks is suppressed,
It is possible to obtain a veneer having a smoother one side than before, and if the divided one side of the veneer is directed to the bonding surface side of the plywood, excessive consumption of the adhesive is unnecessary, or the surface of the plywood can be obtained. If it turns to the side, it becomes very useful practically, for example, excessive removal of the surface layer becomes unnecessary. In addition, the device of the embodiment uses a regulating bar having a substantially non-displaceable regulating surface and a regulating bar having an elastically displaceable regulating surface as a regulating member to form a thick plate passage. Even if there is a slight error in the thickness of the thick plate, there is no particular problem in the division, and if the thick plate is cut from the raw wood with a single-plate shaving machine, the properties of the raw wood or single-plate shaving machine etc. Due to this, it is advantageous to have a function of allowing the thickness error of the thick plate, when illuminating the actual condition in which the thickness error easily occurs in the thick plate. Therefore, it is possible to reliably apply the conveying force necessary for the division to the thick plate, to perform the stable division, and it is an apparatus excellent in practicality. By the way,
As the dividing device according to the present invention, on both sides of the path of the thick plate,
It is also possible to adopt a configuration in which both regulating surfaces are substantially non-displaceable, and both regulating surfaces are opposed to each other at an interval substantially equal to the thickness of the thick plate. According to the above, when the thickness of the thick plate is larger than the interval between the passages by a certain limit or more, there is a risk that passage of the thick plate may be disabled, and conversely, when the thickness of the thick plate is smaller than the interval between the passages, Since the thickness of the two divided plates may be unequalized individually, it is desirable to keep the thickness error of the thick plate within a certain limit. On the contrary, on both sides of the path of the thick plate, a restricting bar whose both restricting surfaces are elastically displaceable is provided (preferably, the distance between the restricting surfaces is slightly smaller than the thickness of the thick plate). In this case, the function of allowing the thickness error of the thick plate is expanded, but the thick plate to be divided is not parallel to the surface. In the case of a thick plate having the shape of a fiber, the dividing line by the dividing blade is easily guided in the fiber direction of the fiber, and the thickness of the two divided plates may be dissimilar to each other. It is desirable to set the degree to which the regulating surface can be elastically displaced as small as possible within a range where the thickness error of the thick plate can be tolerated. On the other hand, instead of the piercing transport roll,
For example, a friction engagement type conveyance roll, or a plurality of endless piercing conveyance endless belts composed of a chain in which a large number of piercing bodies are implanted in the traveling direction can be used as the conveyance member. Means that even if the friction coefficient is increased as much as possible, there is a limit to the frictional force that can be exerted, and it is difficult to apply the transfer force to the thick plate stably, so that the thick plate meanders or stops during the transfer. The endless piercing and conveying belt has a width in the direction perpendicular to the running direction that is generally larger than the width of the piercing body in the piercing and conveying roll, and the required width of the groove of the regulating member is required. As the width is inevitably widened, the function of pressing the vicinity of the boundary between the thick plate and the two plates is somewhat impaired, and there is a problem that adverse effects such as rough skin are easily induced in the divided plates. Are less or less practical than piercing transport rolls. So not necessarily use the proactive conveying member Suitably, as described later in Examples, it is better to keep the use as secondary conveying member provided to the opposite side of the piercing transport roll. Next, the dividing device illustrated in FIGS. 3 and 4 includes a plurality of piercing bodies 7a arranged in the rotation direction at predetermined intervals in the axial direction, and a gap between rows of the piercing bodies 7a.
A stab restriction that has a ring-shaped elastic body 8 made of rubber or the like, which is located at a position lower than the tip of the piercing body 7a by a height less than the thickness of the thick plate 9, and is driven and rotated in the direction of the arrow shown in the figure. A roll 7 and a so-called double face bar-shaped regulating bar 11 having a substantially non-displaceable refracting surface-shaped regulating surface 12 at the end opposite to the end supported by the supporting member 13.
The gap between the regulation surface 12 of the regulation bar 11 and the ring-shaped elastic body 8 is opposed to a position where the gap is slightly smaller than the thickness of the thick plate 9. The piercing body 7a and the elastic body 8 in the piercing regulating roll 7 are attached by the piercing conveyance as described above. According to the example of the roll 6. With the dividing device configured as described above, it is also possible to smoothly divide the thick plate into two as desired, and the piercing regulating roll 7 is used as a conveying member also serving as a regulating member, and has a ring shape. The pressing action of the elastic body 8 on the dividing position and the absorbing action of the thickness error of the thick plate 9 are shown in FIG.
2 has the advantage that it can be exerted almost in the same manner as the regulating bar 3 in the dividing device illustrated in FIG. 2 and can also impart a conveying force to the thick plate 9 via the elastic body 8. Has a disadvantage that its durability is inferior to that of the regulating bar 3, so it is necessary to pay attention to the replacement time of the elastic body. Next, FIG. 5 and FIG.
Has a regulating surface 2 that is substantially non-displaceable, a plurality of divided regulating bars 1a to 1n supported by a support member 14, and a regulating surface that is each elastically displaceable. 4 and a plurality of divided regulating bars 3a to 3n supported by the support member 13 are separated from each other by a distance between the regulating surface 2 and the regulating surface 4 that is somewhat smaller than the thickness of the thick plate 9. At the same time, the single-blade split blade 20 is provided so as to face the exit of the passage of the thick plate so as to face the outlet of the thick plate. ~
At a predetermined interval in the direction perpendicular to the traveling direction of the 1n thick plate, grooves 5 having an appropriate width are provided, and a circular saw-shaped engaging member 16b / shaft 16c having a large number of piercing bodies 16a on the outer periphery and a spacer A piercing transport roll 16 made of 16d or the like is provided at a position where the piercing body 16a reaches the path of the thick plate via the groove 5, and the thick plate is substantially similar to the dividing device illustrated in FIGS. Can be split into two parts. However, since the piercing action of the piercing transport roll is backed up by a regulating bar having a regulating surface capable of elastic displacement, it is necessary to set an elastic coefficient suitable for the regulating bar. If the regulation bar having a regulation surface is divided into a plurality of sections, there is an advantage that conformability to a thick plate is improved, and each regulation bar including a regulation bar having a substantially non-displaceable regulation surface has an advantage. According to the form of dividing into a plurality of
There is also an advantage that manufacturing is easier than non-divided ones,
This is particularly advantageous when providing a groove. Next, the dividing device illustrated in FIG. 7 has the configuration of the dividing device illustrated in FIGS. 1 and 2, and the dividing device illustrated in FIG.
9 or FIG. 1 in addition to the configuration of the dividing device illustrated in FIG.
The splitting device illustrated in FIG. 0 has the same structure as the splitting device illustrated in FIGS. 5 and 6, and further includes a transport member (a piercing transport roll or a piercing regulating roll) at a position facing a thick plate passage. This is an example in which a configuration having a separate conveying member is added to the opposite side, and specifically, a configuration described later is added. That is, the dividing device of FIG. 7 is provided at every predetermined interval in the direction perpendicular to the direction of travel of the thick plate of the regulating bar 1 in the dividing device of FIGS. 1 and 2, and the dividing device of FIG. In the dividing device of No. 4, grooves 15 having an appropriate width are provided at predetermined intervals in the direction perpendicular to the direction of travel of the thick plate of the regulating bar 11, and a large number of punctures are arranged in the rotation direction at predetermined intervals in the axial direction. Body 26
The piercing and transporting roll 26 having the “a” as an engaging portion (substantially the same as the piercing and conveying roll 6 described above) is
5 is provided separately at a position where the piercing body 26a reaches the path of the thick plate via the piercing member 5. Further, the dividing device of FIG. 9 further includes restriction bars 3a to 3e in the dividing device of FIGS. 3
n (however, the thickness is appropriately reduced in consideration of the back-up action of the piercing and conveying roll 36 described later) at predetermined intervals in the direction perpendicular to the traveling direction of the thick plate. And a piercing and transporting roll 36 (substantially the same as the piercing and transporting roll 16 described above) having a plurality of piercing bodies 36a aligned in the rotation direction at predetermined intervals in the axial direction as an engaging portion. The piercing body 36a is separately provided at a position where the piercing body 36a reaches the path of the thick plate via the connector 15, and the structure is slightly complicated as compared with the basic device. This is effective because the transport force can be more stably applied to the thick plate together with the transport force of the piercing transport roll. On the other hand, the dividing device shown in FIG. 10 replaces the piercing transport roll 36 in the example shown in FIG. 9 with a friction member 18 made of rubber or the like (covering the round flange-shaped engaging member 17b) at predetermined intervals in the axial direction. ) As an engaging portion, and separately provided at a position where the friction body 18 reaches the path of the thick plate via the groove portion 15 of the regulating bar 3a to 3n.
The use of such a friction engagement type transport roll can also stabilize transport, and if necessary, the transport roll can be diverted to the splitting device shown in FIG. 7 or FIG. Is the friction member 18 as in the case of the piercing regulation roll described above.
It is necessary to pay attention to the replacement time of the friction body because the durability of the friction body is difficult. Incidentally, the piercing conveyance roll and the piercing control roll hardly change the conveyance force, the conveyance speed, and the like even when the piercing body is considerably worn, so that the setting of the mounting position, the driving speed, and the like are relatively simple. On the other hand, in the case of the friction engagement type transport roll, when the frictional body is coated to increase the frictional force as in the above-described example, the transporting force, the transport speed, and the like change with the wear of the frictional body. Therefore, it is necessary to slightly change the setting of the mounting position, the driving speed, and the like corresponding thereto. When two plates having the same thickness are made from a thick plate as in the illustrated example device, if the dividing blades are arranged so that the two plates are bent uniformly, the mutual refraction degree is the most. Although it is preferable because the number of refraction is reduced, if necessary, the refraction degree may be different for each.For example, although not shown, by changing the relative position of the dividing blade with respect to the regulating member, two sheets having different thicknesses are provided. A plate can also be made. In such a case, it is more effective to make the refraction degree of the thickly divided side smaller than the refraction degree of the thinly divided side. Any of the plates can be divided as long as the plate is refracted from the thick plate following the cutting edge of the divided blade. Of course, the double-edged blade and the single-edged blade can be replaced with each other. In addition, each of the two plates is split in a state where it is bent from the thick plate following the cutting edge of the split blade, so that the single plate is unidirectionally bent like a single plate shaving machine. Since the splitting resistance is smaller than the cutting resistance when cutting, even if the cutting edge angle of the split blade is equal to the cutting edge angle of the cutting blade of the single plate cutting machine, damage to the cutting edge is reduced. Because of this tendency, if necessary, the cutting edge angle of the split blade is made sharper than the cutting edge angle of the cutting tool of the single-plate grinding machine to further smooth the split surface and reduce the split resistance. It is also possible to finish or polish the minimum area of the cutting edge at an obtuse angle, together with or separately from it, in order to extend the life of the blade. Also, the shape of the regulating bar is not limited to the shape of each of the illustrated example devices, but may be variously changed if the shape regulates the passage of the thick plate to be equal to or less than the thickness of the thick plate. For example, if necessary, the non-divided restriction bar in the examples of FIGS. 1 to 4 may be changed to a divided restriction bar as in the examples of FIGS. 5 and 6 to facilitate manufacture. In any case, the regulating surface of the regulating bar is liable to wear due to sliding contact with the passing thick plate. It is preferable to improve the abrasion resistance by performing an embedding process, etc., and furthermore, when at least one of the regulating bars provided on both sides of the thick plate passage, a regulating bar whose regulating surface is elastically displaceable is used. Due to splitting due to elastic displacement of the regulating surface Although the illustration is omitted so that the pressing action to suppress is not excessively impaired, at least one of the regulating surfaces of the regulating bar is replaced with the thick plate so that the exit side of the thick plate passage is slightly narrower than the entrance side. It is effective to slightly incline the passage with respect to the passage and to relatively increase the pressing action of the regulation bar near the exit of the thick plate passage, and to set the shape and the mounting form of the regulation bar in this way. Is desirable. In addition, the shape of the piercing conveyance roll or the piercing regulating roll, specifically, the arrangement interval of the piercing body in the axial direction or the rotating direction, the height of the piercing body, or the thickness of the elastic body, etc. The design may be changed arbitrarily without being limited to the shapes of the illustrated examples, but as shown in FIGS. 3 and 4, as the spacing between the piercing members in the axial direction becomes narrower, or as shown in FIG. As shown in the example of FIG. 6, as the spacing between the piercing bodies with respect to the rotation direction becomes narrower, and furthermore, as the piercing depth of the piercing bodies becomes deeper, it is better to position the piercing bodies in the dispersed state as much as possible,
It is natural that the conveying force can be stably applied. Of course, even if the width of the piercing body is widened, the conveying force is increased. However, as the required width of the groove provided in the regulating member is inevitably widened, the pressing force for suppressing the front crack caused by the division is increased. The effect is impaired to some extent, and adverse effects such as rough skin are likely to be induced on the divided boards. It is desirable to make it correspond. In addition, although the wedge shape shown in the example is suitable for manufacturing, the shape of the piercing body may be changed as appropriate, for example, a pyramid shape, a conical shape, an elliptical pyramid shape, and the like. In any case, when treating a wet slab, the material of the piercing body is unlikely to react with moisture, salt, resin, etc. contained in the slab. It is desirable to use a material, for example, it is appropriate to apply a rust-preventive coating treatment such as plating to ordinary steel, spring steel, or the like, or to form it from stainless steel. Further, when two piercing transport rolls are opposed to each other, or when a piercing transport roll and a piercing regulating roll are opposed, and further when a piercing transport roll and a transport roll having an engaging portion are opposed to each other, Regarding the relative position of each piercing body in the axial direction or the relative position between the engaging portion and the piercing body, one of the piercing bodies is completely opposed to the other, and one of the piercing bodies is disposed in the axial center direction with respect to the other. It is possible to adopt a configuration in which the piercing body is shifted by an arbitrary distance to the piercing body. If necessary, the space in the axial direction of one piercing body and the space in the axial direction of the other piercing body or the engaging portion may be different. Although it is possible to adopt a form in which it is possible, in any case, it is important to synchronize the transport speeds with each other, and when installing the same type of roll, it is convenient to have the same turning radius. is there. On the other hand, a thick plate to be processed is obtained by subjecting a thick plate in a wet or semi-wet state cut by a single-plate shaving machine or a thick plate cut by a single-plate shaving machine to a softening treatment by heating. Various thick plates can be divided, including thick plates formed by drying a thick plate, and further, a thick plate cut by a single plate shaving machine. If a thickness error or rough surface remains on a thick plate when cutting from a log with a sheet cutting machine, it may cause a thickness error on the divided plate. It is desirable to cut a thick plate with as small a thickness error and a rough surface as possible. Also, there is a concave portion (blindness) on the front side of the wood and a corresponding portion on the back side of the wood. Due to the roughness of the exposed skin, the regulating bar is elastically displaceable on one side of the thick plate passage. Case, it is preferable to process the trees back side of the plank is positioned elastically displaceable regulating surface.

[0005]

As apparent from the above, according to the apparatus for dividing a thick plate according to the present invention, the method for producing a unique veneer described in the description of the prior art can be carried out without difficulty, and the method for producing a plywood can be used. Also has a positive effect on the transmission, and the practical effect of the present invention is great.

[Brief description of the drawings]

FIG. 1 is an explanatory side view of a thick plate dividing apparatus according to the present invention.

FIG. 2 is a partially cutaway front view of the thick plate dividing apparatus illustrated in FIG. 1;

FIG. 3 is an explanatory side view of the thick plate dividing apparatus according to the present invention.

FIG. 4 is a partially cutaway front view of the thick plate dividing device illustrated in FIG. 3;

FIG. 5 is an explanatory side view of the thick plate dividing apparatus according to the present invention.

6 is a partially cutaway front view of the thick plate dividing device illustrated in FIG. 5;

FIG. 7 is an explanatory side view of the thick plate dividing apparatus according to the present invention.

FIG. 8 is an explanatory side view of the thick plate dividing device according to the present invention.

FIG. 9 is an explanatory side view of the thick plate dividing apparatus according to the present invention.

FIG. 10 is an explanatory side view of the thick plate dividing apparatus according to the present invention.

[Explanation of symbols]

 1, 1a to 1n, 3, 3a to 3n, 11 ... regulation bar 2, 4, 12 ... regulation surface 5, 15 ... ······ Groove portions 6, 16, 26, 36 ·············· Puncture transport rolls 6a, 7a, 16a, 26a, 36a ····· Puncture body 7. ·············································································· ··················································································· ·························································· ..Friction bodies

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B27L 5/00 B27L 5/06

Claims (8)

(57) [Claims] At least one of the thick plate passages is provided.
To the side, with the plank at predetermined intervals in the direction perpendicular to the direction of travel of the plank
A conveying member having an engaging portion to be engaged, and a thick plate
On both sides of the passage of the
At least a regulatory member with a regulatory surface that regulates
Also, on the side where the conveying member exists, the engaging portion is restricted.
The surface is intricate, and it has an appropriately shaped cutting edge
The cutting edge that faces the split blade in the direction
Being prepared for a position facing the outlet of the board passage in a distributed manner
A dividing device for a thick plate . 2. A regulation bar whose displacement surface is substantially immovable.
And a restricting bar whose restricting surface is elastically displaceable
Used on either side of the plank passage and the opposite side
And one of the two regulating bars
At predetermined intervals in the direction orthogonal to the direction of travel of the thick plate.
Provide grooves with appropriate width and rotate at predetermined intervals in the axial direction
It has a large number of piercing objects lined up in the direction
A piercing transport roll driven and rotated in the traveling direction is transported by a transport member.
And the piercing body passes through a thick plate passage through the groove.
2. The dividing device according to claim 1, further comprising:
Place . 3. The apparatus for dividing a thick plate according to claim 2, wherein
The restriction bar on the opposite side of the restriction bar that already has a groove.
At predetermined intervals in the direction orthogonal to the direction of travel of the thick plate.
A new groove with an appropriate width is newly provided, and a predetermined distance in the axial direction
It has an engaging portion that engages with the thick plate at every interval, and
The transport roll, which is driven and rotated in the traveling direction of the plate,
Through the groove provided at the position where the engaging portion reaches the passage of the thick plate.
Separating device for thick plates separately prepared for installation . 4. An outlet side of a thick plate passage is smaller than an inlet side.
At least one of the regulation bars so that it becomes narrower
Control surface is slightly inclined with respect to the plank path
The thick plate dividing device according to claim 2 or 3 . 5. A regulating bar whose regulating surface is substantially immovable.
Is used as a regulating member, and either one of the thick plate passages is used.
Side, and in the rotation direction at predetermined intervals in the axial direction.
A large number of piercing bodies are lined up, and
Position lower than the tip of the body by less than the thickness of the slab
, Each having a ring-shaped elastic body,
Piercing control roll that is driven and rotated in the direction of travel of the thick plate
Is used as a conveying member also serving as a regulating member,
On the opposite side of the regulating bar and the ring-shaped elastic
Claims wherein the gap is provided at a position where it is equal to or less than the thickness of the plank
2. The apparatus for dividing a thick plate according to claim 1 . 6. A thick plate dividing apparatus according to claim 5, wherein
A predetermined distance in the direction perpendicular to the direction of travel of the thick plate
In addition to providing a groove of appropriate width that is located every
It has an engaging portion that engages with the thick plate at predetermined intervals, and
The transport roll, which is driven and rotated in the
Separately to the position where the engaging part reaches the path of the thick plate through the groove
A thick plate dividing device prepared for use . 7. A large number of piercing bodies arranged in the rotation direction are provided with an engaging portion.
Using the piercing transport roll provided as a transport roll
The thick plate dividing device according to claim 3 or 6, wherein: 8. The cutting edge angle of the dividing blade of the dividing device for a thick plate ,
The thick plate according to any one of claims 1 to 7, wherein the thick plate is formed so as to be sharper than a cutting edge angle of a cutting blade of a single-plate grinding machine positioned in front of the thick plate dividing device. Splitting device.