JP6676333B2 - Sawmill - Google Patents

Description

  The present invention relates to a lumber apparatus that can efficiently produce plate materials and square lumber from log lumber in accordance with a wood plan by providing an appropriate material feeding apparatus in front of the lumber apparatus.

  There is known a sawmill including a pair of left and right first cutting blades, a pair of second cutting blades vertically opposed to each other and arranged in parallel on the left and right, and a biaxial circular saw blade opposed to the left and right ( Patent Document 1).

  The first cutting blade forms the vertical plane by cutting the left and right of the log wood while chipping, and the second cutting blade performs the cutting while cutting the upper, lower, left and right sides of the wood chip, including the vertical plane and the horizontal plane. Are formed at the four corners to trim the wood, and the circular saw blade can grind the left and right sides of the wood. Therefore, for example, by sending the centered wood reciprocally through at least one 90 ° rotation through a sawmill, the wood can be sawn in accordance with an arbitrary wood plan.

Japanese Patent No. 5006658

  In the case of such a conventional technique, since the first and second cutting blades for cutting while cutting wood into chips and the circular saw blade are used, the overall configuration is complicated and the tendency to increase the size is inevitable. Also tended to be too large.

  Accordingly, an object of the present invention is to provide a lumber capable of simplifying the entire configuration and reducing the overall cost by combining the upper and lower left and right cutting blades and the left and right circular saw blades in view of the problem of the related art. It is to provide a device.

  The configuration of the present invention for achieving this object includes a pair of cutting blades vertically opposed to each other and arranged in parallel on the left and right of the material feeding path, and a biaxial circular saw blade opposed to the left and right of the material feeding path. Are arranged along the material feeding path, and the cutting blade shifts the upper side and the lower side in the front-rear direction of the material feeding path in opposite directions to each other in each of the left and right sets vertically opposed to each other. It is possible to collectively position in one side direction and up and down direction, and set up and down distances at the four corners of the cross section of the wood. Can be set at the same height so that they overlap on the left and right, and a horizontal flat reference plane can be formed on the top and bottom of the wood. The gist of the invention is that the positioning is performed collectively in one direction and in the vertical direction.

  As the cutting blade, a circular saw-shaped blade can be combined on one side of a cylindrical body having a plurality of cutting blades provided on the peripheral surface.

  In addition, the circular saw blade shifts the upper side and the lower side in the same direction in the front-rear direction of the material feeding path for each pair of left and right opposed to the left and right, so that the cutting edge of each outer periphery is up and down in the same vertical plane. May be arranged so as to overlap with each other, and the vertical axis distance may be changed for each of the left and right pairs facing each other.

  In addition, left and right guide rollers are provided before and after the cutting blade and circular saw blade to guide the wood on the material feeding path in the left-right direction, and support the wood on the material feeding path by holding it in the vertical direction. Rollers and holding rollers can be disposed before and after the circular saw blade.

  According to the configuration of the invention, the upper, lower, left, and right cutting blades can cut wood while cutting the wood into chips. Therefore, the upper left and right cutting blades and the lower left and right cutting blades are installed downward and upward, respectively, and are set at the same height in the vertical direction such that the cutting edges on the respective outer circumferences overlap left and right. In this way, horizontal reference planes can be formed above and below the wood, and by appropriately separating the cutting edges on the respective outer circumferences, vertical planes and cutouts including a horizontal plane are formed at the four corners of the cross section of the wood. You can trim the wood. However, the left and right cutting blades are positioned vertically in the upper and lower sides, respectively, and by setting the interval in the vertical direction arbitrarily, it is possible to trim either the left-right symmetric or the left-right asymmetric Is also feasible. Further, the left and right circular saw blades can grind the left and right sides of the wood, and can take the plate material from the wood after the trimming.

  The cutting blade shifts the upper and lower sides of each pair of left and right in opposite directions in the front-rear direction of the material feeding path to form horizontal reference planes on the top and bottom of the wood, and the four corners of the cross section of the wood When trimming the wood, it is possible to reduce the possibility that the cutting resistance becomes unbalanced unduly.

  Circular saw blades are arranged on the upper and lower axes so that the cutting edges on the outer periphery of each pair are vertically overlapped in the same vertical plane, so that the cutting depth of each circular saw blade is twice as large. A large cutting width close to the above can be easily realized. Further, if the distance between the upper and lower axes in the vertical direction can be changed, it is possible to easily cope with a change in the diameter of wood.

  By arranging left and right guide rollers before and after each of the cutting blade and circular saw blade, and by arranging the support roller and presser roller before and after the circular saw blade, a large material feeding mechanism like a material feeder is required. Instead, the entire configuration can be further compacted.

Schematic plan view of overall configuration (1) Schematic side view of overall configuration Schematic plan view of overall configuration (2) Operation explanation diagram (1) Operation explanation diagram (2) Operation explanation diagram (3) Principal part schematic explanatory view showing another embodiment.

  Hereinafter, embodiments of the invention will be described with reference to the drawings.

  The sawing machine is arranged along a series of feeding paths C extending from the input end A of the wood before sawing to the discharge end B of the wood after sawing, and the upper, lower, left and right cutting blades 11, 12,. In addition to the circular saw blades 21, 22, ... 24, left and right guide rollers 31, 31, ..., 32, 32 ..., upper and lower pressing rollers 41, 41, and support rollers 42, 42 are provided (Figs. 1 and 2). ). However, between the input end A and the discharge end B, each member is assembled in a straight line with a frame (not shown).

  The cutting blades 11, 12,..., 14 are vertically arranged in pairs on the left and right sides of the material feeding path C. Each of the cutting blades 11, 12,..., 14 is configured by combining a circular saw-shaped blade provided on one surface of a flat cylindrical body in a vertical direction and a plurality of cutting blades provided on a peripheral surface. The upper cutting blades 11 and 13 and the lower cutting blades 12 and 14 are arranged downward and upward, respectively. The upper and lower cutting blades 11 and 12 on the left side of the material feeding path C are shifted from each other in the front-rear direction of the material feeding path C, and the upper and lower cutting blades 13 and 14 on the right side are shifted in the opposite direction. .

  The cutting blades 11, 12... 14 are connected to independent vertical drive motors 11a, 12a. The upper and lower cutting blades 11 and 12 on the left side of the material feeding path C can be collectively positioned in the left direction and the vertical direction of the material feeding path C, and the vertical interval can be set. Similarly, the upper and lower cutting blades 13 and 14 on the right side of the material feeding path C can be collectively positioned in the right direction and the vertical direction of the material feeding path C, and the interval in the vertical direction can be set. The left and right front cutting blades 11, 14 are provided with covers 11b, 14b for preventing chips from scattering, respectively.

  The circular saw blades 21, 22,..., 24 are arranged on each of two axes facing the left and right sides of the material feeding path C. The lower circular saw blades 22 and 24 are shifted forward of the upper circular saw blades 21 and 23, respectively. The circular saw blades 21, 22,..., 24 are each directly connected to a single horizontal-shaft drive motor (not shown). The circular saw blades 21 and 22 on the left side of the material feeding path C can be collectively positioned in the left direction of the material feeding path C, and can be collectively positioned in the vertical direction. Similarly, the circular saw blades 23 and 24 on the right side of the material feeding path C can be collectively positioned in the right direction of the material feeding path C, and can be collectively positioned in the vertical direction. The upper and lower circular saw blades 21 and 22 on the left side and the upper and lower circular saw blades 23 and 24 on the right side are arranged such that the cutting edges on the outer periphery thereof are vertically overlapped in the same vertical plane.

  The right and left guide rollers 31, 31,..., 32, 32,... The guide rollers 31, 31, ..., 32, 32 ... are behind the cutting blades 11, 12, ... 14, between the cutting blades 11, 12, ... 14 and the circular saw blades 21, 22, ... 24, the circular saw blades 21, 22, .... In front of 24, two pairs of front and rear are respectively arranged. Each pair of guide rollers 31 and 32 is rotationally driven by a single vertical shaft drive motor (not shown), and is positioned symmetrically on the left and right sides of the material feeding path C via a common cylinder (not shown), and inward. The wood can be guided and guided by sandwiching the wood from the left and right while following irregularities on the surface of the wood.

  The upper and lower pressing rollers 41, 41 and the supporting rollers 42, 42 are respectively located between the cutting blades 11, 12,... 14 and the circular saw blades 21, 22,. A pair of upper and lower guide rollers 31, 31, 32, 32 is arranged in parallel in a horizontal direction between the pair of left and right guide rollers 31, 31, 32, 32. Each of the pressing roller 41 and the supporting roller 42 is rotationally driven by a single horizontal axis drive motor (not shown). Each support roller 42 is fixedly disposed in a frame (not shown) so as to be at a predetermined height position, and each press roller 41 is positioned vertically above the corresponding support roller 42. In addition, while being downwardly urged, the wood can be guided up and down while nipping the wood up and down while following irregularities on the surface of the wood.

  Such a lumber apparatus can lumber wood in accordance with an arbitrary tree harvesting plan by feeding the wood a plurality of times along the material feeding path C from the input end A of the wood to the discharge end B. However, the sawing device at this time uses, for example, a feeding device described in Japanese Patent Application Laid-Open No. 2010-52352, and keeps the log wood at a predetermined height position and a predetermined sawing posture from the input end A side. It is assumed that the material is transported to a position immediately close to the cutting blades 11, 12,. In addition, the cutting blades 11, 12,..., The circular saw blades 21, 22,... 24, the left and right guide rollers 31, 31,. It is set appropriately prior to the input of timber, based on a timber plan that conforms to the shape and dimension data of the timber.

  Therefore, consider the case where large and small plate materials W1, W1, W2, W2, and square W3 are produced from a log material W (FIG. 4A).

  In the first material feeding, first, the upper cutting blades 11 and 13 and the lower cutting blades 12 and 14 are set at the same height position in the vertical direction so that the outer peripheral cutting edges overlap right and left. (FIGS. 3 and 4A), horizontal reference planes Wa, Wa are formed above and below the wood W via the cutting blades 11, 12,..., And thereafter, via the circular saw blades 21, 22,. The left and right back plates Wb, Wb are ground (FIG. 4B). Subsequently, in the second material feeding, four corner notches Wc, Wc... Are formed through the cutting blades 11, 12,. (A)). Each notch Wc is formed in a right-angled triangle including a vertical plane and a horizontal plane. Then, the wood W can grind the left and right plate members W1, W1 through the circular saw blades 21, 22,... 24 (FIG. 5B). Next, in the third material feeding, cutouts Wd at four corners are formed via the cutting blades 11, 12,... 14 (FIG. 6A), and the circular saw blades 21, 22,. , The left and right plate members W2, W2 can be ground and a square bar W3 can be formed (FIG. 6B).

  In the above description, each of the left and right plate members W1, W2 of the square bar W3 can be increased to three or more by further increasing the number of times of feeding. The square bar W3 in FIG. 6B is rotated, for example, by 90 ° and further fed alone to cut both ends through the circular saw blades 21, 22,. Can be taken.

  When the feeding is repeated a plurality of times as described above, the lumbered wood W discharged from the discharge end B is separated from the backboards Wb, Wb, the plate materials W1, W1, etc. Only the material is returned to the loading end A, and the next material feeding is executed. However, at this time, the return path of the wood W may be such that the guide rollers 31, 31,..., 32, 32, the pressing rollers 41, 41, and the supporting rollers 42, 42 are reversed to reverse the inside of the sawmill. A dedicated return path (not shown) provided in the sawmill may be used. In the latter case, the retreat operation of the circular saw blades 21, 22,... 24, the cutting blades 11, 12,... 14 is not required, so that the cycle time is shortened and the sawing efficiency can be improved.

  In FIG. 4A, the wood W having the reference planes Wa and Wa formed thereon is returned to the input end A as it is, rotated by 90 °, and the cutting process of FIG. The wood W can be shaped into the shape shown in FIG. 4B without forming the back plates Wb and Wb. However, in the cutting process of FIG. 4A, the vertical intervals of the cutting blades 11, 12,.

Other embodiments

  The upper and lower circular saw blades 21 and 22 can change the vertical axis distances L1 and L2 (FIG. 7). However, since the same applies to the upper and lower circular saw blades 23 and 24, the circular saw blades 21 and 22 will be described below.

  Now, when the outer diameter D1 of the circular saw blades 21 and 22, the diameter d of the mounting portions 21a and 22a, and the cutting depth a1 = (D1 -d) / 2 (FIG. 7A), If the cutting edge is set to the vertical overlap margin .delta.1, the vertical center distance L1 = D1 -.delta.1, and the cutting width Y1 = L1 -d = D1 -d -.delta.1 = 2a1 -.delta.1. Therefore, if the outer diameters D2> D1 of the circular saw blades 21 and 22 and the cutting depth a2 = (D2−d) / 2> a1 (FIG. 7B), and the overlapping margin δ2 ≒ δ1, The distance L2 between the axes L2 = D2 -.delta.2> L1 and the cutting width Y2 = L2 -d = D2 -d -.delta.2 = 2a2 -.delta.2> Y1 can be realized. That is, the upper and lower circular saw blades 21 and 22 are configured so that one or both of the drive motors can be moved in the vertical direction and set, so that the circular saw blades 21 and 22 can be set according to the diameter of the lumber W to be sawn. , 22 can be set appropriately to realize the required cutting width Y. The same applies to the other circular saw blades 23 and 24.

  INDUSTRIAL APPLICABILITY The present invention can be particularly suitably applied to a lumber system as a relatively small-scale high-performance labor-saving facility.

W: Wood Wa: Reference surface C: Feeding path L1, L2: Distance between shafts 11, 12, 14: Cutting blade 21, 22, 24: Circular saw blade 31, 32: Guide roller 41: Holding roller 42: Supporting roller

Patent applicant Kyowa Kikai Co., Ltd.

Claims (5)

A pair of cutting blades that are vertically opposed to each other and are arranged side by side on the left and right of the material feeding path, and a biaxial circular saw blade that is opposed to the left and right of the material feeding path are arranged along the material feeding path, The cutting blade shifts the upper side and the lower side in opposite directions in the front-rear direction of the material feeding path in each of the left and right sets vertically opposed to each other , and positions them collectively in one direction of the material feeding path, in the vertical direction. At the same time, it is possible to set the vertical spacing and to trim the wood at the four corners of the cross section of the wood, and to set the upper and lower sets at the same height so that the cutting edges on the outer sides overlap each other on the left and right It is possible to form a horizontal flat reference surface on the upper and lower sides of the wood, and the circular saw blade is positioned collectively in one side direction of the material feeding path, in the up and down direction, for each of the left and right pairs facing each other. A sawmill device characterized by the above-mentioned. The cutting blade, each lumber apparatus according to claim 1, wherein Rukoto combining Marunokogata knives on one side of the cylinder to provide a blade for a plurality of cutting the peripheral surface.   The circular saw blade shifts the upper side and the lower side in the same direction in the front-rear direction of the material feeding path for each pair of left and right opposed to the left and right, and within the same vertical plane, the cutting edge of each outer periphery is vertically The sawmill according to claim 1 or 2, wherein the sawmill is arranged so as to overlap.   The sawing device according to claim 3, wherein the circular saw blade is capable of changing an axial distance in a vertical direction for each of left and right sets facing each other.   Left and right guide rollers are disposed before and after each of the cutting blade and the circular saw blade to guide the wood on the material feeding path by sandwiching the wood in the left-right direction, and support rollers that sandwich the wood on the material feeding path in the vertical direction to guide the wood. The sawing device according to any one of claims 1 to 4, wherein a press roller is disposed before and after the circular saw blade.

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