JP2019147364A - Cutting and splitting device of wood - Google Patents

Abstract

To provide a cutting and splitting device of wood capable of cutting and splitting material wood in a round timber shape or in a square timber shape into multiple of thin plate shape effectively without going through vapor steaming process in high temperature and high pressure and without generating a tip splitting phenomenon as well.SOLUTION: To a configuration capable of driving in circulation an endless cutter belt B having a sharp knife edge as a band saw machine and cutting into material wood with small cutting resistance, during use of the cutter belt B, a pair of sharpener device S10, S10 having a rotation grinder for grinding the knife edge constantly and for preventing deterioration of sharpness of the cutter belt B due to entanglement of woody fiber etc is incorporated. A pair of sharpener device S10, S10 are arranged in an orientation for interposing the cutter belt B with the rotation grinder and the rotation grinder is rotated by friction force with the cutter belt B and grinds the knife edge part of the cutter belt B.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wood cutting device having an overall configuration similar to a band saw used for cutting a natural wood material wood into a plurality of thin plates having a predetermined thickness, and more specifically, a cutting blade for cutting. The present invention relates to a wood cutting device that can be operated while automatically regrinding the cutter belt.

  A band saw machine is usually used for cutting a plate from a natural wood log or square block. The blade used for the band saw machine is a so-called band saw formed by forming a saw blade on one side end surface of an endless belt-shaped or belt-shaped thin steel plate. The band saw is usually circulated and driven around a driving pulley and a driven pulley arranged vertically. The material wood to be processed is continuously pressed so as to press against the side end face of the band saw that forms the saw blade after securing a predetermined plate thickness determined in consideration of the cutting allowance lost by sawing. A plate material having a predetermined thickness can be obtained.

  The band saw machine is a highly efficient device having the ability to grind large trees in a short time. However, in the case of using a band saw for the purpose of cutting a large number of thin plates from material wood, the amount of material wood lost by sawing is too much compared to the material wood obtained as a plate material. There is a problem that the utilization rate becomes extremely bad. Moreover, since the cut surface by the band saw is too rough, there is a problem that the obtained plate material is forced to be finished by, for example, hooking.

  The above problem will be described in more detail in relation to the present invention. For example, when the thickness of the target thin plate material is 5 mm, the grinding allowance by a general mechanical scale band saw is about 2.5 mm. If the finishing allowance is 1 mm on both sides, 3.5 mm is lost in order to obtain a thin plate material with a thickness of 5 mm.

  Conventionally, this problem has been dealt with by using a slicing apparatus using a cutting mechanism similar to a manual scissors. In this slicing device, a cutter steel plate like a wide blade with one end formed into a sharp knife edge is translated from one small edge surface of the material wood to the other edge surface along the grain of the material wood. A thin plate material can be cut out from the material wood by a method of forcibly proceeding, but this method has the following problems.

  One of the problems in the slicing apparatus is a problem that greatly depends on the type of material wood and the dry state, but the range of applicable plate thickness is generally limited to a thin range of 3 mm or less. It is a problem. This involves the problem of the strength of the cutter steel plate used in the slicing apparatus. As described above, the cutting mechanism in the slicing apparatus is a so-called scissor cutting in which the cutter steel plate is forcibly pushed into the material wood, and a large frictional drag is generated between the cutter steel plate and the material wood. In order to cut out a plate having a thickness of more than 3 mm by such a method, a large mechanical rigidity is required to withstand a large frictional drag generated between the cutter steel plate and the material wood. As a result, it is necessary to increase the thickness of the cutter steel plate, and if the thickness of the cutter steel plate is increased, a vicious circle occurs in which a greater frictional drag is generated.

  If the only problem is frictional drag, the solution is not difficult. However, the cutting mechanism called tweezers is accompanied by a specific problem that is difficult to solve because of the occurrence of cracks. Tip cracking means that when a blade formed in a wedge shape is pushed into the wood structure, cracking occurs in the wood structure when the indentation amount exceeds a certain limit, and this crack progresses so that the cutting proceeds ahead of the blade. It is a phenomenon. When the tip crack occurs, the blade only proceeds to follow the tip after the tip crack has occurred, and no matter how sharply the cutting edge of the blade is polished, it has no use. As a result, the cut surface of the material wood when the cracking phenomenon occurs is a row cross section that is far from the cut surface, and the commercial value of the thin plate material intended for processing is lost.

  The tip cracking phenomenon is a phenomenon that occurs when a wedge-shaped cutting tool pushes open the wood structure beyond the deformation limit of the material wood, so two solutions can be considered. One solution is to limit the thickness of the blade to a very thin one. However, if the thickness of the target thin plate material is 5 mm, it is extremely difficult in terms of strength. Another solution is to temporarily soften the wood material. That is, if the material wood is flexibly bent according to the edge angle of the blade to be pushed in, the cracking phenomenon can be prevented.

  Currently, among the above solutions, the method of temporarily softening the material wood is unavoidably adopted. At this time, as a means for softening the material wood, a method of steaming the material wood for a predetermined time in a high-frequency and high-pressure steam atmosphere is employed.

  In the above conventional thin plate processing method using high-frequency steam, it is needless to point out again that enormous energy costs are required to soften the material wood, and this is passed on to the product price as it is. Also, a large amount of high temperature and high pressure steam used for steaming material wood cannot be generated without a corresponding environmental burden. Here, one thing that must be forgotten is that material wood that has been exposed to high-temperature and high-pressure steam does not completely return to its original quality when dried. This is none other than the use of steam for applications that require a high degree of wood quality.

  Furthermore, as a purely technical problem, in the case of tweezer cutting, the cutting edge of the cutter steel plate used for cutting, that is, the wood fiber adheres to the knife edge part in a resin-entangled state, and the sharpness decreases in a short time, As a result, there is a problem that the cutting resistance increases with time and the state of the cut surface is deteriorated. In addition, the problem that the sharpness of the cutter steel plate decreases in a short time is different from the case of cutting wood with a knife, for example, because the cutter steel plate is forcibly driven in a state of parallel movement in the wood fiber, to some extent. It can be said that this is an inevitable problem. In addition, it is considered that the wood fiber contains a large amount of moisture by steam treatment and is in a state where it is difficult to be cut. Whatever the cause, it was necessary to interrupt the work every time a certain working time passed and replace the cutter steel plate with a new one.

  The present invention aims to solve these problems, and for that purpose, it is premised on solving the following problems.

  As described above, there are two methods for cutting the material wood without causing the cracking phenomenon: a method of thinning the blade and a method of steaming the material wood with high-frequency steam. When trying to avoid it, there is no choice but to select a method of thinning the blade. As a result, it is a problem how a thin blade that cannot secure rigidity enough to be pushed into the material wood can be advanced in the woody structure of the material wood, and solving this problem is the first of the present invention. It becomes a problem.

  Further, the following problem is a problem that can be said to be the fate of a blade used by rubbing with the object to be cut. However, the sharpness of any blade decreases with the passage of time of use. The reduction in sharpness leads to an increase in cutting resistance and consequently makes it difficult to use a thin blade. Therefore, in order to use the thin blade stably, there is a problem of how to prevent the sharpness from being lowered during use. It is the second problem of the present invention to solve this problem. Then, by solving the first problem and the second problem, it is not necessary to use the conventional method of steaming the material wood with high-temperature and high-pressure steam, and many problems associated with the method can be eliminated. .

  Means adopted by the present invention in order to solve the above problems and achieve the object of the present invention are as follows.

(Solution 1)
The wood cutting device of the present invention has a sharp knife edge extending over the entire length of one side end surface, and is applied to an endless cutter belt that is circulated and driven between a driving pulley and a driven pulley. A wood cutting device having an overall configuration similar to a band saw used to cut a material wood into a thin plate having a predetermined thickness by pushing the material wood from the front of the knife edge of the cutter belt, The wood cutting device is equipped with a rotating grindstone at any part of the part of the cutter belt that travels from the driven pulley to the driving pulley, and the both sides of the cutter belt are inclined at an inclination corresponding to the knife edge angle of the cutter belt. The rotary grindstone in each of the pair of sharpener devices has a biasing means incorporated therein. It is installed so as to be able to advance and retract in the axial direction of the rotating grindstone via the retracting mechanism, and the rotating grindstone at this time is elastically pressed against the knife edge of the cutter belt in use via the advancing / retreating mechanism. It is characterized in that the knife edge of the cutter belt is constantly polished while being driven by the frictional force generated between the cutter belt and the cutter belt.

  The above solution 1 shows one basic configuration of the wood cutting device of the present invention. A major feature of the wood cutting device is that it has an overall configuration similar to a band saw machine. The difference from the band saw machine is that it does not have a band saw. Nevertheless, it can be said that it is similar to a band saw because it has an endless cutter belt similar in shape and usage to a band saw. This cutter belt corresponds to a band saw having a saw blade portion formed with a sharp knife edge, and is circulated and driven between a driving pulley and a driven pulley, similarly to the band saw. Similar to the band saw machine, the usage procedure is such that the material wood is cut into a thin plate by pushing the material wood from the front of the knife edge of the cutter belt.

  However, the cutting mechanism of the material wood in the wood cutting device is completely different from that of the band saw. The cutting by the band saw is cutting by sawing, but the cutting by the wood cutting device of the present invention is cutting by the knife edge of the cutter belt. Even in the same cutting, the difference between the two clearly differs depending on whether or not chips are generated.

  At this time, the fact that no chips are generated indicates that there is no loss of material wood due to the cutting operation. Then, it becomes a problem whether the cutter belt can be advanced into the wood fiber of the material wood without generating swarf, but the cutter belt in the wood cutting device of the present invention is driven to circulate. Compared with the conventional method in which this point is also pushed and cut so that the cutter steel plate having the knife edge is moved parallel to the material wood, the conventional cutting method is a so-called press cutting, The method of the present invention is a draw. Even with the same blade, it is well known from experience that many children have better sharpness and lower cutting resistance than pressing, and no proof is required. As a result, a small cutter belt can be used because the force applied to push the blade is small.

  However, even with a thin blade, a decrease in sharpness over time due to use is inevitable. In this regard, the wood cutting device of the present invention includes a pair of sharpener devices that always polish the knife edge of the cutter belt in use during use. The reason why a pair of sharpener devices is provided is to cope with knife edges formed on both blades. When the knife edge is a single blade, one sharpener device is omitted or not used.

  The pair of sharpener devices have the same structure, and are installed at arbitrary locations in the portion of the cutter belt that travels from the driven pulley toward the driving pulley. Since the cutter belt is belt-like, the cutter belt is loosened when driven in the direction pushed by the driving pulley, and is tensioned by tension when driven in the direction pulled by the driving pulley. That is, the pair of sharpener devices are installed at a place where the cutter belt is in a tensioned state.

  Each sharpener device includes a rotating grindstone. The rotating grindstone is a circular grindstone having a predetermined thickness as a matter of course from the usage mode. The rotating grindstone has a rotating shaft at the center, and is installed so as to be able to advance and retract in the axial direction of the rotating grindstone via an advancing / retracting mechanism incorporating an urging means. At this time, an inclination posture inclination corresponding to the angle of the knife edge of the cutter belt is set in each sharpener device. In general, the peripheral surface of the rotating grindstone is often used. However, in the present invention, the feature is that the side end surface of the rotating grindstone is used. Then, when the knife edge is a double-edged blade, the pair of sharpener devices are angled so that the side end surface of each rotating grindstone is parallel to the blade surface of the corresponding knife edge. Therefore, when the rotating grindstone is driven in the axial direction by the advancing / retreating mechanism of each sharpener device, the rotating grindstone can operate so that its side end surface approaches or moves away from the blade surface of the knife edge. Further, the urging means incorporated in the advance / retreat mechanism functions to elastically press the rotating grindstone against the knife edge, and can absorb vibrations generated in the cutter belt during the operation. The rotating grindstone pressed against the knife edge can be driven to rotate by friction with the cutter belt to polish the knife edge.

  It may be questioned whether the knife edge can be polished by the driven rotation of the rotating grindstone as described above, so this point will be described. In order for the rotating grindstone to exhibit a polishing action, it is necessary to have a relative motion with the knife edge. Here, the cutter belt is linearly moved, but the rotating grindstone is rotationally moved. Further, the rotating grindstone in the present invention uses not the peripheral surface but its side end surface, that is, a flat surface portion, and is in a surface contact state with the knife edge. When the rectilinear surface and the rotating surface are in contact with each other, the relative motion does not occur between them only in a very narrow range where the straight motion of the knife edge can be regarded as a tangent to a specific point of the rotating grindstone. In other words, the relative rotation with no shortage of polishing can be obtained by the driven rotation. In addition, when utilizing the surrounding surface of a general rotary grindstone, such relative motion cannot be obtained. This is the reason for using the side end face of the rotating grindstone in the present invention.

(Solution 2)
The wood cutting device of the present invention can also be configured to actively drive the rotating grindstone. The structure of the wood cutting device in this case has a sharp knife edge extending over the entire length of one side end surface, and is applied to an endless cutter belt that is circulated and driven between a driving pulley and a driven pulley. A wood cutting device having an overall configuration similar to a band saw machine used to cut a material wood into a thin plate having a predetermined thickness by an operation of pushing the material wood from the front of the knife edge of the cutter belt. This wood cutting device is provided with a rotating grindstone having a drive motor at any part of the portion of the cutter belt that travels from the driven pulley to the driving pulley, and has an inclined posture corresponding to the angle of the knife edge of the cutter belt. It has a pair of sharpener devices that are distributed on both sides of the cutter belt, and each pair of sharpener devices has a biasing means. It is installed so that it can be moved forward and backward in the axial direction of the rotating whetstone through the built-in advance and retract mechanism, and this rotating whetstone is actively driven by the drive motor while the side edge surface portion of the rotating whetstone is being used through the advance / retreat mechanism knife edge It is characterized in that the knife edge of the cutter belt is constantly polished by being elastically pressed onto the cutter belt.

  The above solution 2 shows the configuration of the wood cutting device of the present invention in which the rotary grindstone of the sharpener device is actively driven. Since this is the only difference from the apparatus shown in Solution 1, this point will be described. The reason why the rotating grindstone can be entrusted to the driven rotation is based on the premise that the reduction in sharpness of the cutter belt due to use and the restoration of sharpness due to polishing can be balanced. However, depending on the conditions such as the type of material wood to be cut and the state at the time of processing, the type of rotating grindstone, the type of steel plate for the cutter belt, the traveling speed of the cutter belt, the feed speed of the material wood, etc. In some cases, it may not be possible to balance sharpness recovery. An object of the present invention is to easily cope with such a situation by actively driving a rotating grindstone. However, even when the sharpener device is provided with a drive motor, it is possible to use the rotary grindstone while being driven to rotate together with the drive motor.

(Solution 3)
The wood cutting device of the present invention is based on the invention described in Solution 1 or Solution 2, and a pair of sharpener devices, which are constituent members of the basic invention, are mounted on an XY slide mechanism. It is characterized by that.

  The solution means 3 is intended to give various adjustment functions to the sharpener device. The advancing / retreating mechanism in the sharpener device has a function of elastically pressing the rotating grindstone against the knife edge as described in the solving means 1. In this case, when the rotating grindstone is worn due to use over time, the pressing pressure will decrease. By mounting the sharpener device on the XY slide mechanism, the X-axis direction or the Y-axis direction is reduced. Any reduction of the pressing pressure can be easily corrected by any one of the sliding operations. Even if the advance / retreat mechanism is activated, the contact position between the rotating grindstone and the knife edge does not change. That is, the same position of the rotating grindstone is used. As a result, a step occurs in the rotating grindstone due to long-term use. And this level | step difference will function so that the blade edge of a knife edge may be shaved off. In order to prevent this, it is necessary to change the use position of the rotating grindstone from time to time or constantly. Such a problem can be easily dealt with by changing the use position of the rotating grindstone by the XY slide mechanism.

(Solution 4)
The wood cutting device of the present invention is based on the invention described in the above solution means 3, and a pair of sharpener devices which are constituent members of the basic invention are mounted on an XY slide mechanism via a rotary base, respectively. It is characterized by being installed.

  The solving means 4 aims to eliminate the rigidity of the operation of the XY slide mechanism and to provide a multi-faceted adjustment function by the sharpener device. That is, the operation of the XY slide mechanism is a reciprocating linear motion in two orthogonal directions, and there are not many merits of the adjustment function. For example, it is impossible to change the installation angle of a rotating grindstone installed in an inclined posture along the edge angle of the knife edge. Therefore, in the present invention, the sharpener device is mounted on the XY slide mechanism with the rotary base interposed therebetween, thereby utilizing the stepless angle adjustment function of the rotary base and the two-way operation of the XY slide mechanism in combination. I was able to do it. Thereby, for example, adjustment such as changing the edge angle of the knife edge during use according to the state of the material wood and the like becomes possible.

(Solution 5)
The wood cutting device according to the present invention is based on the invention described in any one of Solution 1 to Solution 4, and the rotating grindstone that is a constituent member of the basic invention is a cup-shaped grindstone. Features.

  The solving means 5 will be described. The reason for adopting the cup-shaped grindstone for the rotating grindstone is very clear. The biggest reason is that the cup-shaped grindstone is a dedicated grindstone designed to use the side end face of the grindstone unlike a general grindstone. That is, a general rotary grindstone is provided with a shaft hole through which a rotation shaft such as a drive motor is inserted at the center position, and is driven by passing the rotation shaft through this shaft hole and screwing it through a dedicated large washer. The structure is fixed to a motor or the like. At this time, the rotating shaft of the drive motor or the like protrudes from the side end surface of the rotating grindstone. On the other hand, the cup-shaped grindstone is set to be thicker than a general rotating grindstone, and the central portion is seated in a large concave shape, and is fixed to a rotating shaft of a drive motor or the like inside the seated hole. By doing so, it can fix without making a rotating shaft protrude in a side end surface. In the present invention, since the side end face of the rotating grindstone is used, the feature of the cup-shaped grindstone that the rotating shaft does not protrude from the side end face functions very advantageously. For example, the entire side end surface of the rotating grindstone can be used without worrying about contact between the cutter belt and the rotating shaft, and the contact position between the cutter belt and the rotating grindstone is moved to the opposite side of the shaft, It can also be used in reverse.

  As described in the solution section, the present application includes two basic inventions related to a wood cutting device. The first basic invention has a beneficial configuration in which an endless cutter belt is circulated and driven like a band saw so that material wood can be cut with a small cutting resistance, while being pressed against the knife edge of the cutter belt and continuously rotated while being driven. It is characterized by a configuration that combines a sharpener device with a rotating grindstone that polishes the knife edge and prevents the sharpness of the knife edge from being lowered. By enabling the use of a belt, it is possible to clean the material wood without steaming the material wood with high-temperature and high-pressure steam as in the past. Therefore, it became possible to cut a large number of thin plates without waste.

  The second basic invention is characterized in that the rotating grindstone in the sharpener device is actively driven by a drive motor, whereby the sharpness recovery is insufficient only by the driven rotation of the rotating grindstone, The demand for changing the edge angle of the knife edge associated with the change of the wood type can be easily accommodated in a short time.

It is a front view of the wood cutting device of the present invention. It is a disassembled perspective view which shows the principal part of the said wood cutting device. It is a top view which shows the principal part of the said wood cutting device.

  Embodiments of a wood cutting device (hereinafter simply referred to as “cutting device”) according to the present invention will be described below with reference to the drawings.

  The slitting device M10 is formed by arranging required constituent members on a bowl-shaped C-shaped frame F (FIG. 1). The C-shaped frame F is integrally formed in a C-shape as a whole so as to secure a work space W therein. In this form, the through frame F1, the lower horizontal frame F2, the upper horizontal frame F3, The opening side lower frame F4 and the installation base frame F7 can be recognized.

  A driving pulley H1 is arranged on the lower horizontal frame F2, and a driving motor M2 is arranged on the side of the driving pulley H1 via a motor base F6. The driving pulley H1 is belt driven by a driving motor M2. At this time, the driving direction of the driving pulley H1 in the cutting apparatus M10 is the clockwise direction (the arrow direction in FIG. I). A driven pulley H2 having the same diameter as the driving pulley H1 is disposed on the upper upper horizontal frame F3 facing the lower horizontal frame F2. At the upper end of the opening-side lower frame F4 of the C-shaped frame F, a work table F5 is arranged so as to cross the work space W.

  The cutter belt B is made of a thin steel plate formed in an endless belt shape, and is wound around the driving pulley H1 and the driven pulley H2 through a slit provided in the work table F5. One edge in the width direction of the cutter belt B is ground as a sharp knife edge B1 instead of a saw blade (see FIG. 3). The cutter belt B is driven to circulate in a clockwise direction between the driving pulley H1 and the driven pulley H2. Note that a predetermined tension is applied to the cutter belt B by a tensioner device (not shown) attached to the driven pulley H2 side, and safety covers F8 and F8 for preventing contact accidents are attached to necessary portions of the cutter belt B. .

  A pair of sharpener devices S10 and S10 are installed on the side surface of the opening side lower frame F4 below the work table F5 via a dedicated installation base F7. The pair of sharpener devices S10 and S10 have the same structure and are symmetrically positioned so that the cutter belt B is sandwiched from the left and right by the cup-shaped grindstones G2 and G2 with the position shifted vertically. Arranged (FIGS. I and 3).

  Each sharpener device S10 is a device in which a rotating grindstone G is rotationally driven by a drive motor M3 via a bearing unit S1, and includes a cup-shaped grindstone G2 as the rotating grindstone G (FIG. 2). The bearing unit S1 has a double-shaft structure in which a main shaft S2 protrudes on both sides of a housing, and a rotating grindstone G is attached to one end of the main shaft S2, and a drive motor M3 is attached to the other end of the main shaft S2 via a clutch S3. Structure. In the bearing unit S1, no speed increase / decrease is performed. Then, what is the significance of the bearing unit S1 is that the rotary whetstone G can be actively driven by the drive motor M3, and the drive motor M3 is separated by the clutch S3, and the rotary whetstone G is used for free rotation. Is to be able to do that too.

  Each sharpener device S10 is provided with an XY slide mechanism XY and a rotary base R10 as base members for exhibiting various adjustment functions. The XY slide mechanism XY has a Y-axis slider P2 mounted on a base plate P1 used in a fixed manner via a Y-axis direction linear guide, and on the Y-axis slider P2 via an X-axis direction linear guide. The combined structure having the X-axis slider P3 mounted thereon.

  On the upper surface of the X-axis slider P3, a slide plate P4 that is further slidably mounted in the X-axis method with respect to the X-axis slider P3, and a plurality of compression springs D that elastically dampen the slide operation of the slide plate P4. The advancing / retreating mechanism K comprised of the combination is mounted. The compression spring D elastically positions the slide plate P4 to the forward limit, and the slide plate P4 can move elastically in the backward direction by an external force. Further, the slide plate P4 returns to the forward limit due to the disappearance of the external force.

  The rotary base R10 is mounted on the slide plate P4 of the advance / retreat mechanism K. The rotary base R10 includes a fixed ring R2 mounted on the fixed base R1 and a movable ring R3 rotatably assembled to the fixed ring R2. The movable ring R3 can be manually rotated at a required angle by attaching an operation handle R5 to an operation hole R4 provided on the side surface of the fixed ring R2 and operating the internal gear.

  The sharpener device S10 is mounted on the rotary base R10 with the main shaft S2 facing the X-axis direction. The operation handle R5 for operating the rotary base R10 is disposed at the corner of the bearing unit S1 of the mounted sharpener device S10, and the rotary base R10 can be operated from the bearing unit S1 with good operability. It is devised so that it can.

  The pair of sharpener devices S10, S10 is configured so that the cutter belt B is cup-shaped grindstones G2, G2 in an angle corresponding to the knife edge B1 of the cutter belt B in a plan view through the dedicated installation bases F7, F7 described above. It arrange | positions so that it may be pinched | interposed from both sides by the side part of (FIG. 3). At this time, the cup-shaped grindstones G2, G2 are elastically pressed against the knife edge B1 by the advance / retreat mechanism K, and the cup-shaped grindstone G2, even when the drive motor M3 is disconnected by the clutch S3. G2 is rotationally driven by the frictional force with the cutter belt B. Further, the advance / retreat mechanism K can prevent the pressure higher than the pressure set by the compression spring D from being applied to the cutter belt B.

  The rotational speed of the cup-shaped grindstones G2 and G2 during free rotation can be adjusted by the operation of the XY slide mechanism XY in the Y-axis direction. A small amount of wear of the cup-shaped grindstones G2 and G2 over time is automatically replenished by the operation of the advance / retreat mechanism K in the X-axis direction, and a large amount of wear is corrected by the operation of the XY slide mechanism XY in the X-axis direction. can do. Further, the edge angle of the knife edge B1 can be freely changed by the operation of the rotary base R10.

M10 Wood cutting device S10 Sharpener device R10 Rotary base XY XY slide mechanism B Cutter belt B1 Knife edge K Advance / retract mechanism H1 Driving pulley H2 Driven pulley G Rotating wheel G2 Cup-shaped grindstone

Claims (5)

From the front of the knife edge of the cutter belt to an endless cutter belt that has a sharp knife edge that extends over the entire length of one side end surface and is circulated and driven between a driving pulley and a driven pulley. A wood cutting device having an overall configuration similar to a band saw machine used to cut a material wood into a thin plate having a predetermined thickness by an operation of pushing the material wood,
The wood cutting device is provided with a rotating grindstone at any part of a portion of the cutter belt that travels from the driven pulley toward the driving pulley, and has an inclined posture corresponding to the angle of the knife edge of the cutter belt. It is equipped with a pair of sharpener devices that are distributed on both sides of the belt,
The rotating grindstone in the pair of sharpener devices is installed so as to freely advance and retreat in the axial direction of the rotating grindstone via an advancing and retracting mechanism each incorporating an urging means,
The rotating grindstone is elastically pressed against the knife edge of the cutter belt in use via the advancing / retracting mechanism, and the driven end of the rotating grindstone is driven by frictional force generated between the rotating grindstone and the cutter belt. A wood cutting device characterized by constantly polishing the knife edge of a cutter belt. From the front of the knife edge of the cutter belt to an endless cutter belt that has a sharp knife edge that extends over the entire length of one side end surface and is circulated and driven between a driving pulley and a driven pulley. A wood cutting device having an overall configuration similar to a band saw machine used to cut a material wood into a thin plate having a predetermined thickness by an operation of pushing the material wood,
The wood cutting device includes rotary grindstones each having a drive motor at an arbitrary portion of a portion of the cutter belt that travels from the driven pulley toward the driving pulley, and corresponds to the angle of the knife edge of the cutter belt. A pair of sharpener devices installed with being distributed on both sides of the cutter belt in an inclined posture inclination,
The rotating grindstone in the pair of sharpener devices is installed so as to freely advance and retreat in the axial direction of the rotating grindstone via an advancing and retracting mechanism each incorporating an urging means,
While the rotary whetstone is actively driven by the drive motor, the side end surface portion of the rotary whetstone is elastically pressed against the knife edge of the cutter belt in use via the advance / retreat mechanism, so that the knife edge of the cutter belt is always pressed. A wood cutting device characterized by polishing.   The wood cutting device according to claim 1 or 2, wherein the pair of sharpener devices are installed on an XY slide mechanism.   4. The wood cutting apparatus according to claim 3, wherein each of the pair of sharpener devices is mounted on the XY slide mechanism via a rotary base.   The wood cutting device according to any one of claims 1 to 4, wherein the rotating grindstone is a cup-shaped grindstone.

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