JP3690838B2 - Method and apparatus for processing outer surface of round bamboo for raw material - Google Patents

Description

[0001]
[Industrial application fields]
In order to produce a plate material as a raw material from raw bamboo, it goes through the following four basic processes.
(1) Outer surface processing that smoothes off the outer nodes and shells of the raw material bamboo.
(2) Inner surface processing by smoothing the partition wall and inner surface of the node part of the inner surface of the raw bamboo.
(3) Hot bath equipment for degreasing.
(4) Unfolding process by pressing the raw material bamboo into a flat shape while passing through a heating furnace.
[0002]
The present invention relates to part (1) of the process described in [0001] above. When producing a flat plate by effectively deploying the raw material bamboo, the outer surface of the raw material round bamboo, which is a process, and the node portion protruding at an interval are used as a whole. The present invention relates to a method and apparatus for obtaining a smooth outer surface by cutting and removing continuously in the longitudinal direction.
[Prior art]
[0003]
With the improvement of living standards, the amount of materials consumed by humans has increased dramatically. In particular, wood has come in handy as an indispensable raw material, and now the world is worried about its depletion. As we all know, timber cannot be obtained without a great deal of time and effort in reproduction, and timber exporting countries have come to put a strict hold on deforestation to export raw wood.
[0004]
Such a phenomenon means that Japan, which imports a large amount of timber, breaks down the stable supply route of raw wood, and it is extremely important to develop various alternatives and secure absolute quantities. As one of the alternatives, bamboo is taken up as a raw material that has a short growth period and high strength and can be easily obtained in and out of the country, and various studies have been conducted on its use.
[0005]
There are various forms of use, but the so-called bamboo board that expands the cylindrical material into a flat plate shape is used to increase the added value by making the most effective use of the raw material bamboo, and to produce in large quantities. Is commercialization. The following applications are related to the prior art related to the commercialization of bamboo board. JP-B-36-794, JP-A-59-48103, JP-A-62-90202, JP-A-1-294003, JP-A-4-67902, JP-A-6-182712, JP-A-6-182713, JP-A-6-320504, etc. In each application, the gist is as follows.
[0006]
In Japanese Patent Publication No. 36-794, the raw material round bamboo obtained by cutting the middle section of the raw material round bamboo into a vertical oil layer is heated in a constant temperature oil layer, one end is fixed and the other end is pressed and developed with a roller. In Japanese Patent Laid-Open No. 59-48103, a technique for forming a plate is a technique in which a large number of cuts are made in the circumferential direction of the inner surface of a hollow cylinder of raw material bamboo and then cut into a vertical direction to be developed into an insulator. However, in Japanese Patent Laid-Open No. Sho 62-90202, a raw material bamboo that has been cut vertically is placed in a heating bath, and the cut portion is gradually developed with a wedge-shaped spreading jig to form a plate shape. Is disclosed.
[0007]
In JP-A-1-294003, a technique for regulating both ends so that the inside of the half-moon-shaped raw material bamboo is not stretched when the half-moon-shaped raw material-made bamboo is pressed from both sides to form a plate shape is disclosed in JP-A-4-294003. In 67902, there is a technology in which raw material bamboo divided into half or more is continuously made into a plate shape with a rolling feed roll while passing through a cassette type high-frequency heating furnace in addition to removal of nodes and inner and outer skins. JP-A-6-182712 discloses a technique of a batch-type electric furnace in which a large number of half-bamboo bamboo materials are arranged in the longitudinal direction by pressure forming and formed into a plate shape by cassette electrodes.
[0008]
Further, in Japanese Patent Laid-Open No. 6-182713, a technique for preventing the occurrence of warping or a return bending phenomenon due to a change in a state such as drying of a plate on which raw material bamboo is unfolded is a prior application of the present applicant. 6-320504 removes the inner and outer nodes and skins with a round spade instead of halving the raw material bamboo, then cuts it in the vertical direction and pressurizes it from the inside and outside in order to develop it into a plate shape. The technology to do is disclosed.
[0009]
[Problems to be solved by the invention]
Among the above-mentioned prior applications, there are two prior arts specifically disclosed for the outer processing, one of which is Japanese Patent Laid-Open No. 4-67902, which is a halved raw material round bamboo with a hollow portion of the main shaft. This is a method of removing the knot and the outer shell with a blade attached to the outside of the rotating spindle, and the other is described in JP-A-6-320504. This is a method of removing nodes and outer skins with a cutting blade which is arranged on the outside of a round bamboo and can be expanded and contracted in the circumferential direction.
[0010]
Certainly, the shape of the raw bamboo is close to a circle in the cross section and close to a straight line in the longitudinal direction, and it is processed by the method disclosed in the prior art. Although it is possible, as shown in FIG. 1, the general shape of the round bamboo for raw materials is hollow and the cross-sectional shape is often uneven at the root portion, and is often distorted and elliptical with deformation. In most cases, however, it is slightly bent and accompanied by a reduction in the outer diameter, and it is impossible to perform a long process with effective sampling of the plate thickness due to the limitation of the outer surface shape even as a half-cut material.
[0011]
In wood that has been thinned and pruned sufficiently, the cross-section of the raw wood is close to a circle and has good linearity in the longitudinal direction, and many raw woods are similar in shape, so the raw wood is fixed and the cutter is rotated. The outer processing can be easily performed by a method of moving while moving or fixing the blade and moving the log while rotating. However, using such equipment to process the outer side of the raw material bamboo with a blade, even if the raw material's raw material is corrected, it cuts off the outer shell more than necessary, depending on the cross-sectional shape of the raw material material. It is difficult to collect good plate materials.
[0012]
[Means for Solving the Problems]
In the present invention, in the process of growth of bamboo, except for raw round bamboo that cannot be processed abnormally or warped, in order to improve the straightness in the longitudinal direction before processing at a later date, Including raw material bamboo with some warping that is subject to heating and correction, after collecting branches and summing the length after cutting, get it in a dry state without leaving the sun or water sealing There is provided a method and apparatus for external surface processing that forms a smooth surface by continuously removing the outer surface nodes and the outer skin in the form of a ridge without processing the raw material round bamboo into half.
[0013]
The present invention is directed to a raw material bamboo having a maximum length of 4 m, preferably a length of 2 m and an outer diameter of 60 to 160 mm. The cross-sectional shape of the raw round bamboo is the total length from the end corresponding to the base side to the tip in the longitudinal direction, and the maximum / minimum difference in average diameter is -5 to- 15% range, warp measured at the central part in the longitudinal direction is in the range of 4-6% with respect to 2m length without correction, and more than that, it can be handled by correcting the range that can be handled It is intended for.
[0014]
In the aspect of the present invention, the outer surface processing apparatus is composed of a supply facility, a processing facility, and a discharge facility, and the front and rear facilities of the processing facility have substantially the same structure except that they have a symmetrical positional relationship. Yes. On each of the three parts of the frame, there are provided rollers for supporting the raw material bamboo from at least one place from the lower side. The support roller is used as a unit except for processing equipment, and the diameter of the support roller is in the range of 140 to 160 mm, preferably 150 mm. The distance between the axes of the supporting rollers in a set unit is preferably 10 mm in the range of the roller diameter +5 to 15 mm.
[0015]
The support roller in the processing equipment is not located at the position corresponding to the cutting strip side to process the surface of the raw material bamboo, and it is installed only on the outer part and also serves to prevent the raw material bamboo from escaping during processing. Have both. The support rollers for the raw material round bamboo are all rotatably supported by a rotary shaft of a two-bearing bearing having a turning shaft, and at least one of the supporting rollers in each of the supply / processing / discharge facilities has a rotational speed. Is moved in the range of 18-180 rpm. As a drive system, a timing belt is provided between a driven pulley provided for each of the support rollers and a drive pulley provided on a drive shaft arranged to communicate with the driven pulley on a drive shaft arranged in communication under the frame of each facility. Etc. are driven by a power source with a reduction gear.
[0016]
The raw material round bamboo placed on the support roller of each facility needs to move while rotating sequentially. However, although the surface is driven and rotated by the support roller, the support roller does not move forward with the rod arranged so as to be orthogonal to the longitudinal direction of the raw material bamboo. Therefore, when the support roller is swung around the swivel axis in the range of 3 to 10 degrees, preferably 5 to 8 degrees, the raw material round bamboo obtains a propulsive force in the direction to travel, and the propulsion speed is 0. The movement is started in the range of 5 to 2.0 m / min. The selection of the swivel angle is made manually or automatically, for example, based on the dimensions and surface condition of the raw material bamboo on the support roller, based on whether or not there is a node.
[0017]
The swivel angle can be easily obtained by using a gear train in which a spur gear is attached to each swivel shaft of a set of support rollers and an idle gear is inserted in the middle, and one of the swivel gears is rotated. The support rollers can rotate simultaneously in the same direction. Therefore, such a gear train may be installed on one set or all of the support rollers, and a turning mechanism for interlocking each drive side gear of the gear train may be provided. The turning mechanism operates independently of a mechanism that simultaneously turns all of the rotation shafts of the support rollers.
[0018]
Each pair of support rollers located in the supply facility and the discharge facility corresponds to the intersection of isosceles triangles that sandwich the raw material bamboo, with the distance corresponding to the pair of rotating shafts as one side. In addition, a pressing roller supported rotatably on a bearing that rotates at the tip of the cylinder piston is arranged, and the pressing roller is pressurized and vertically moved by a cylinder fixed on a column attached to the frame of each part. At the center of the processing equipment, it is supported by a single support roller, a pressing roller supported by a bearing that rotates at the tip of the cylinder piston, and a cutting band of the processing equipment.
[0019]
Both the support roller and the pressing roller are contact surfaces with the raw material bamboo, and a material that is elastic but has a small amount of deformation is used to reliably maintain contact without slipping. Therefore, the raw material bamboo is pressed and supported by three rollers, and even if the raw material bamboo is deformed, it smoothly rotates and moves to the next part. You can touch. Since the supporting part of the pressing roller is rotatable, it does not hinder the movement of the raw material bamboo in the longitudinal direction.
[0020]
At this time, the support roller arranged in the first half of the supply facility without the press roll and the second half of the discharge facility and the outer surface of the raw material bamboo are not always in contact with each other depending on the shape of the raw material circular bamboo. There is a state in which any or all of the rollers do not contact at all during one rotation of the raw material bamboo, and not all three-point support devices always support the raw material bamboo. However, since it always supports at two points and restricts the meandering of the raw round bamboo, the influence on the cutting process is minimized.
[0021]
To alleviate the influence of non-uniform contact pressure on the cutting surface of the raw round bamboo when the cutting strip contacts the raw round bamboo for processing. Since the buffer spring is used in the machining head frame incorporating the cutting band, the machining head frame can slide back and forth with respect to the raw material round bamboo in response to fluctuations in machining pressure. The effect of meandering due to the shape of the round bamboo for raw material on the cutting work is eliminated, and there is no problem.
[0022]
The raw material bamboo taken out from the supply equipment enters the processing equipment and the knot and the skin part are deleted, but if the cutting tool fixed for the deletion is used, If the cutting tool does not always move back and forth flexibly according to the surface of the raw material round bamboo, it will not be possible to obtain a bamboo plate with an effective thickness due to excessive cutting, and in addition to bamboo with thick fiber bundles, In the present invention, it is difficult to obtain a smooth processed surface due to the complicated balance between the shape of the cutting tool and the rotation speed of the raw material bamboo, etc. A cutting strip is used.
[0023]
The flat belt-shaped cutting strip is used by passing between two driven and non-driven pulleys that are in contact with the outer surface of the raw material round bamboo and are perpendicular to the longitudinal direction. The processing head incorporating a set of pulleys is provided with fine adjustment means for moving in a horizontal direction so as to be able to approach or disengage at right angles to the raw material round bamboo to be processed. In order for the processing head to approach the surface of the raw material round bamboo, the position is detected by a contact-type position sensor with a search roller installed around the processing head, and the processing head is fed out. The sensor may be a non-contact type, but the contact type is simple and reliable.
[0024]
The raw material round bamboo is cut by touching the cutting surface while rotating. The cutting band is somewhat elastic even though it is tensioned, so it corresponds well to the non-uniform cross-sectional shape of raw material bamboo, and it cuts without excessive biting and has a smooth outer surface Finish. At this time, the rotation and movement directions at the portion where the raw material bamboo and the cutting strip are in contact with each other are both from the top to the bottom in order to prevent jumping during processing of the raw material bamboo. When the round bamboo is sufficiently fixed, the rotation direction may be reversed.
[0025]
The rotation direction of the raw material bamboo is the same as that of the cutting band, and the rotation speed is high when the cross-sectional shape is nearly uniform, and slow when not so as to eliminate cutting unevenness and reverse. Since the amount of cutting can be increased by rotating, it is desirable that the drive roller can be rotated forward and backward. Further, it is necessary to select the position of the drive pulley so that the machining side of the cutting band is always in tension when the cutting band rotates. The reason is that if the machining side is always in a relaxed state, the cutting band has poor elasticity and the surface pressure of the machined surface tends to fluctuate. Therefore, it is desirable that either of the two pulleys can be arbitrarily switched and driven.
[0026]
The cutting band of the processing head used in the processing equipment according to the present invention has a rotational speed in the range of 15 to 35 m / min, preferably 20 to 30 m / min, and in the range of 120 to 250 mm in the width direction, preferably 150 to 200 mm. The grain size of the abrasive grains is in the range of 30 to 80 mesh, and preferably 40 to 60 mesh is selected and used. The processing capacity of the processing equipment including the supply equipment, the processing equipment, and the discharge equipment described below is in the range of 60 to 160 mm in average diameter in consideration of the degree of deformation such as the cross-sectional shape of the raw round bamboo.
[0027]
The tip of the round bamboo for raw materials is sequentially fed from the supply equipment to the processing equipment, and the outer surface processed material that has finished cutting of the nodes and the skin is moved to the discharge equipment in sequence. Since the cutting process from the latter half of the bamboo to the end of the bamboo plays a role in supporting the outer surface processed material that has already been cut in order to proceed smoothly, the supply equipment, structure and arrangement of the first half are symmetrical in shape. The contents are substantially the same except for the relationship.
[0028]
The support roller for supporting and moving the raw material bamboo or the partially finished outer surface processing material from the lower surface is such that the outer diameter of the raw material circular bamboo material or the outer surface processed material at each portion is slightly smaller in the longitudinal direction or When the raw material round bamboo including the outer surface finished part crosses over multiple support rollers, the rotation of the support rollers is all uniform and partially slips. The surface of the work material or the surface of the support roller is damaged, so that a mechanism that directly incorporates in the support roller or absorbs excessive rotational force in the form of slip or the like in the drive part of each of the support rollers is provided. It is good to include it.
[0029]
The second aspect of the inner surface machining apparatus according to the present invention is a means for driving and turning the support roller in the apparatus, wherein the rotation shafts of the support rollers are sequentially connected and connected by a universal joint, and the rotational power is supplied from one end to the other end. It is structured to convey to. However, a considerable part of the power transmission mechanism is present on the frame, and the upper structure becomes complicated, for example, a separate cover is required from the aspect of safety and the like. As shown in FIG.
[0030]
The third aspect of the processing equipment according to the present invention is that, as the driving method of the supporting roller in the apparatus, a large capacity is not necessary for the driving force of the supporting roller. A small independent power source is installed and driven. In this means, it is necessary to perform synchronous operation with each of the supporting rollers, and the control part is inevitably complicated. However, since the connected drive shaft and the like are not used, the mechanism part of the apparatus is simplified and maintenance work is performed. Becomes easier.
[0031]
In the embodiments shown in the present invention, the description of the common parts is omitted as much as possible, so please refer to the embodiments with the lower numbers. Of course, the structure of each part shown in each embodiment can be used in combination with each other.
[0032]
[Action]
In the present invention, a raw material bamboo is introduced into an outer surface processing apparatus composed of a supply facility, a processing facility, and a discharge facility, and the lower side and the upper side of the raw material bamboo are respectively composed of a support roller and a pressing roller. By positioning by three-point support and rotating and rotating the support roller slightly in the previous period, the raw material bamboo is rotated and simultaneously moved in the desired direction, and the belt-shaped rotating belt is rotated and rotated. The surface of the raw material bamboo is processed without excessive cutting by the synergistic effect of the elasticity of the cutting band and the elasticity of the buffer spring provided in the processing head frame. With this method, the outer surface of the raw bamboo having a non-uniform cross section and a warp in the longitudinal direction can be processed smoothly.
[0033]
[Example 1]
FIG. 2 is a front view of the outer surface processing apparatus 2 according to the present invention, and FIG. 3 is a top view thereof. The outer surface processing apparatus 2 includes a supply facility 3, a processing facility 4, and a discharge facility 5, and a processing head 6 is attached to the processing facility 4. The frames 7, 8, and 9 of the portions 3, 4, and 5 have a uniform height and are connected in the longitudinal direction. However, the width direction dimension of the frame 8 is greatly cut inward to allow the machining head 6 to move in the direction of the arrow with respect to the frame 8. A control panel 10 is incorporated on the side surface of the frame 9 of the discharge facility.
[0034]
On the connected frames 7, 8, and 9, at least one pair of supporting rollers 11 having a diameter of 150 mm are arranged at a center interval of 160 mm on each frame to support the raw material bamboo. Above, the support roller 11 is used alone. As shown in FIGS. 4 and 5, the support roller 11 is provided with a hard rubber or synthetic resin lining 13 on the outer periphery of the foil 12, and transmits the rotational force of the support roller 11 to the raw material bamboo 1. Therefore, the raw material bamboo 1 is driven by the contact between the surface of the lining 13 and the surface of the raw material bamboo 1 to alleviate the problem of uneven circumferential speed due to the non-uniform cross-sectional shape.
[0035]
The support roller 11 has a rotating shaft 14 so as to protrude from both ends of the foil 12, and is supported rotatably by a bearing member 15 mounted on the bearing 16. A driven pulley 17 is mounted on the rotary shaft 14 extending outward from the bearing material 16. A bifurcated shaft 18 is attached to the bottom portion of the bearing 16 and is inserted together with a retaining member so as to be rotatable around a bearing 19 provided on the frames 7, 8, 9. The support roller 11 needs to give the raw material round bamboo 1 rotational force and propulsive force in the direction of the arrow, and the drive shaft 22 supported by the bearing 21 on the inner surface of the frame 7 also communicates with the inside of the frames 8 and 9. A drive pulley 23 is provided on the drive shaft 22 at a position corresponding to 17, and the driven pulley 17 is rotated via a timing belt 24.
[0036]
A range of 18 to 180 rpm is used for the number of rotations of the support roller 11 disposed on the frames 7, 8, and 9 of the outer surface processing apparatus 2. However, since the outer diameter in the longitudinal direction of the raw material bamboo 1 gradually decreases or slightly increases and the outer peripheral length varies depending on the position in contact with the longitudinal direction, when all the support rollers 11 are rotated at the same speed, Since the circumferential speed of the round bamboo 1 varies depending on the position, a slip phenomenon is likely to occur at the contact surface between the support roller 11 and the raw circular bamboo 1, and particularly when the surface finish of the raw circular bamboo 1 is important. It is desirable to place a slip absorbing mechanism (not shown) such as a friction plate in the driven pulley 17 or the driving pulley 23 so that a partly excessive torque is not applied to the raw material bamboo 1.
[0037]
If the support roller 11 rotates only in contact with the longitudinal direction of the raw material bamboo, the raw material bamboo cannot be moved. Therefore, in order for the rotational force of the support roller 11 to generate a propulsive force for moving the raw material round bamboo, the pivot shaft 18 of the support roller 11 is placed on the frames 7, 8, 9 as shown in FIG. When the support roller 11 turns slightly to the right around the provided bearing 19, the support roller 11 obtains a propulsive force as a component of the rotational force. The turning angle is preferably in the range of 5 to 8 degrees, and the propulsion speed at this time is in the range of 0.5 to 2.0 m / min.
[0038]
The above-mentioned swivel angle is inserted into the swivel shaft 18 at the bottom of the bifurcated bearing 16, and a flat tooth is engraved on a part of the circumference attached to the bottom of the bifurcated bearing 16 and a screw is engraved on a part of the opposite circumference. The worm foil 25 formed in the above is arranged so as to mesh with the worm 26. In the same manner, a gear 27 in which only flat teeth are engraved is attached to the adjacent support roller 11 constituting one set, and a small flat supported by a bearing 28 in order to turn the pair of support rollers 11 in the same direction in the middle. A gear 29 is inserted. The worm 26 is sequentially connected to a shaft 31 supported by a bearing 30. When the handle 32 attached on the frame end rotates, all the support rollers 11 simultaneously turn at the same angle.
[0039]
As shown in FIGS. 2, 3, and 6, the support rollers 11 installed in the supply facility 3, the processing facility 4, and the discharge facility 5 are provided to hold the raw material bamboo 1 from above at least one place. A pressing roller 36 with a rubber lining is supported on a rotating shaft 40 of a bifurcated bearing 39 attached to the tip of a cylinder 38 fixed on a support column 37 extending from the frames 7, 8, and 9. It is installed so that it can rotate freely. As a result, the raw material bamboo 1 having a warp and a non-uniform cross-sectional shape is pressed by the pressing roller 36 by the thrust of the cylinder 38 to prevent the raw material bamboo 1 from being rebounded (bounced up) during rotation and processing. Make smooth processing.
[0040]
When the raw material bamboo passed through the supply facility 3 enters the processing equipment 4 and reaches the processing head 6, the surface of the raw material bamboo 1 is cut. As shown in FIG. 6, the machining head 6 has an endless cutting belt made of 40-60 mesh abrasive grains between a driven flat pulley 42 and a driving flat pulley 43 that are endless and have a flat belt shape with a width of 150 mm. 44 is supported by a bearing of the machining head frame 45, and the drive flat pulley 43 is connected to a variable speed drive source 47 via a belt 46 and rotates within a range of a peripheral speed of 20 to 30 m / min. The setting of the peripheral speed is determined by the state of the raw round bamboo 1 and the processing conditions.
[0041]
The cutting band 44 hung between the pulleys 42 and 43 moves from top to bottom, and similarly, the raw material round bamboo 1 also rotates in the same direction (inward rotation) as the moving direction of the cutting band 44. This is because the raw material round bamboo 1 does not jump up due to rotation and the like, and the surface is cut in a stable state. However, when the raw material bamboo 1 is sufficiently fixed, the cutting band 44 may be opposite to the rotation direction, and the rotation direction of the raw material circle bamboo 1 may be opposite to the rotation direction. Good.
[0042]
It is preferable to select the rotation direction of the driving flat pulley 43 so that the cutting surface 44 is always in a tension state on the contact surface side with the raw material round bamboo 1. The reason for this is that when the processed surface of the raw round bamboo 1 is not uniform in cross-sectional shape and where there is a nodule, the cutting band 44 is naturally different in the manner of contact with the cutting band 44, and the processing amount is also different. If there is elasticity on the contact surface side of the cutting strip 44 at this time, a preferable processing surface is given without excessively cutting the processing surface by adjusting the moving speed of the raw bamboo 1 for raw material. On the contrary, if the contact surface side of the cutting strip 44 with the raw material round bamboo 1 is always on the relaxed side, the elasticity of the contact surface side of the cutting strip 44 is lost, which is undesirable due to the influence of the elongation of the cutting strip 44, The machining head 6 is provided with a mechanism 48 (see FIGS. 2 and 3, not shown in detail) that can absorb the elongation of the cutting band 44.
[0043]
As shown in FIG. 6, the machining head frame 45 constituting the machining head 6 includes a buffer spring 49 so as to follow a change in pressure received by the cutting band 44. The machining head frame 45 is placed on the slide base 50 at a right angle to the frame 8 of the processing equipment 4, and the slide base 50 is opened on the slide base 50 so that it can be moved in the direction of the arrow on the bed 51. The screw hole 52 and the adjustment screw 54 rotatably attached to the bearing 53 on the side surface of the bed 51 are screwed together and moved by the rotation of the handle 55. This moving operation may be performed manually, but may be automatically performed by a combination of a control circuit using a cutting gauge output and a power source.
[0044]
As shown in FIG. 7, when the rotating raw material bamboo 1 approaches the cutting band 44, the positional relationship between the processing surface of the raw material circular bamboo 1 and the cutting band 44 is on the inlet side of the processing head 6. Detection is performed with a cutting gauge 56 installed so as to be in contact with the outer surface of the round bamboo 1. The cutting gauge 56 indicates that the lever 58 having the exploration roller 57 at the tip is rotatable around the pin 59 and indicates its movement on the support board 60. In addition, there are electric / electronic single or synthetic means. Further, if a cutting gauge 56 is installed on the exit side of the machining head 6, the situation before and after machining can be confirmed, and the machining amount, finishing degree, etc. can be known.
[0045]
The outer surface processed portion of the raw material round bamboo 1 that has been cut by the processing equipment is moved by the rotation of the support roller 11 and sequentially sent to the discharge equipment 5, but the shape of the discharge equipment 5 is symmetrical with the supply equipment 3. Except for the positional relationship, the functional and structural features are substantially the same, and the description thereof will be omitted. The main drive system of the processing apparatus 2 is roughly divided into a rotation and movement drive system for the raw material round bamboo 1 and a rotation drive system for the cutting strip 44, which are used independently and perform inverter control. The shifting range is wide.
[0046]
[Example 2]
FIG. 8 shows another aspect of the driving means of the support roller 61. The support roller 61 is rotatably supported by a rotating shaft 63 on a bearing material of a bearing 62, and a rotating shaft 65 on the lower surface is supported by a bearing 66. The end of the rotating shaft 63 is sequentially connected by a universal joint 64 to transmit the rotational force to drive the whole. Also in this means, it is preferable that an excessive torque absorbing mechanism is built in the support roller 61, and in this driving means, the universal joint 64 is exposed and dangerous, so it is necessary to cover it with a cover or the like for safety.
[0047]
In FIG. 9, a link mechanism is provided as a turning means for applying a propulsive force to the support roller 61. The turning shaft 65 on the lower surface of the bearing 62 is supported by the bearing 66 in the same manner as in the first embodiment, but the tip of the turning shaft 65 has a slight angle with respect to the rotating shaft 64 of the support roller 61. The lever 67 is fixed, and the links 70 and 71 are slidably stopped by a reamer bolt 69 passed through the tip hole 68, and the inclination angle is uniformly transmitted to all the support rollers 61 positioned vertically and horizontally. Accordingly, the adjusting screw 74 with the handle 75 screwed with the retaining nut 73 mounted on the lever 72 can be rotated and moved in the direction of the arrow to be set easily.
[0048]
[Example 3]
FIG. 10 shows still another aspect of the driving means of the support roller 61. A small geared motor 76 having a variable speed is directly attached to the rotating shaft of the support roller 61 and driven. This means is most simplified and preferable in terms of structure, but the number of drive sources becomes large and the control circuit becomes somewhat complicated.
[0049]
【The invention's effect】
The following effects were obtained by using the external surface processing equipment according to the present invention.
{Circle around (1)} The cross-sectional shape that was pruned to a certain length was not uniform, and the outer diameter gradually decreased over the entire length, so that it was possible to process a raw material round bamboo with its warp.
{Circle around (2)} The portions of the nodes and the outer skin protruding at intervals on the outer periphery of the raw material round bamboo were continuously cut in the longitudinal direction.
(3) By using the cutting band, the surface of the raw round bamboo with a non-uniform cross-sectional shape could be smoothed along the cross-sectional shape without excessive processing.
(4) Raw bamboo for raw materials can be arbitrarily combined with the processing speed including the rotational direction of the belt-shaped cutting band, the cutting grain size, the processing surface speed including the rotational direction of the raw circular bamboo, and the moving speed. The outer surface of can be finished in various processing states.
(5) Eliminates the hassle of cutting and splitting.
(6) The processing speed of raw bamboo was increased.
(7) The processing surface speed of the round bamboo for raw materials was made uniform.
[Brief description of the drawings]
FIG. 1 is a bird's-eye view showing the shape of a raw round bamboo for processing.
2 is a front view of the outer surface processing apparatus according to the present invention shown in Embodiment 1. FIG.
3 is a top view of the outer surface processing apparatus of FIG. 2. FIG.
4 is a side view including a partial cross-section of the turning and driving mechanism of the support roller of FIG. 2;
5 is a cross-sectional view of the support roller and the drive mechanism along the AA cross section of FIG. 4; FIG.
6 is a side view of a machining head equipped with the cutting band of FIG. 2. FIG.
FIG. 7 is a side view of a cutting gauge.
FIG. 8 is a side view of a drive mechanism using a universal joint according to a second embodiment.
9 is a layout view of a link turning mechanism as viewed in the direction of arrow C in FIG.
FIG. 10 is a side view of a support roller with an independent drive source according to a third embodiment.
[Explanation of symbols]
2 External surface processing equipment
3, 4, 5 Supply equipment. Processing facilities. Discharge equipment
6 Processing head
7, 8, 9 supply. processing. Each frame of discharge
11, 61 Support roller
25, 26 worm foil, worm
27, 29 Gears. Small gear
36 Pressing roller
42, 43, 44 Driving flat pulley, driven flat pulley, cutting band
56 Cutting gauge

Claims (11)

The raw bamboo (1) is processed during the following steps (A) to (E), and the outer surface of the raw bamboo (1) is cut and smoothed to finish the surface. The outer surface processing method of the round bamboo for raw materials.
(A). The raw round bamboo (1) moves on the supply equipment (3) while rotating on at least one driven support roller (11, 61).
(B). The raw material round bamboo (1) advances while rotating and reaches a three-point support base consisting of a pair of support rollers (11, 61) and a pressure roller (36) that moves up and down by a cylinder (38). Positioned so as not to move during processing.
(C). When the raw material bamboo (1) approaches the cutting band (44) of the processing equipment (4), the sensor detects the position of the processed surface of the raw material circular bamboo (1) and is provided in the processing head (6). The horizontal moving means moves the cutting band (44) to the machining position.
(D). The surface of the raw round bamboo (1) advances while rotating and comes into contact with the cutting strip (44) to be cut.
(E). Raw material round bamboo (1), the supply system (3) and to move sequentially through the discharge equipment (5) of the same configuration, and is discharged to the outside of the process when the processing of the outer surface longitudinal direction is completed. The outer surface processing device (2) of the raw bamboo for raw material (1) combines the following equipment (A), (B) and (C), and the raw circular bamboo for raw material (1) is converted from (A) to ( C) An outer surface processing apparatus for raw material bamboo, wherein the outer surface of the raw material bamboo (1) is moved and moved to cut and smooth the outer nodes and skins.
(A). On the frame (7) of the supply facility (3), a set of support rollers (11, 61) is arranged at least one place in the direction of travel of the raw material bamboo (1), and at least one of them The set is combined with a roller (36) that is pressed by a cylinder (38) and moves up and down to form a three-point support.
(B). The processing head (6) is arranged so as to face each other in a direction perpendicular to the longitudinal direction of the frame (8) of the processing equipment (4), and is provided with fine movement adjusting means for moving forward and backward, and pulleys ( 42, 43), which is composed of a machining head frame (45) having a built-in cutting band (44), a slide base (50), and a bed (51), and a support roller (11) on the frame (8). , 61) as a single or a set, at least one or more places are arranged in the direction of travel of the raw material bamboo (1), and in the place facing the cutting band (44) therein, the support roller (11, 61) Is combined with a roller (36) which is pressed by a cylinder (38) and moves up and down as a single unit to constitute a two-point support.
(C). On the frame (9) of the discharge facility (5), the support rollers (11, 61) are paired and at least one place is arranged in the traveling direction of the raw material bamboo (1), and at least one of them is arranged. The set constitutes a three-point support in combination with a roller (36) that is pressed by a cylinder (38) and moves up and down. At least one or one or more sets of support rollers (11, 61) installed in the supply facility (3), processing facility (4), and discharge facility (5) are driven and rotated to contact the raw material bamboo (1). Rotation is transmitted from the support roller (11, 61) by surface driving , and the support roller (11, 61) is turned around the turning axis and tilted with respect to the longitudinal direction of the raw material round bamboo (1), whereby the raw material round The apparatus for processing an outer surface of a round bamboo for raw material according to claim 2, wherein the bamboo (1) is moved. The drive mechanism of the support roller (11, 61) installed in the supply facility (3), processing facility (4), and discharge facility (5) is between the support roller (11, 61) and the raw material bamboo (1). The outer surface processing apparatus for raw bamboo for raw materials according to claim 2 or 3, wherein the structure absorbs the difference in peripheral speed. The swiveling means of the support roller (11) meshes a worm wheel (25) and a worm (26), each of which has a flat tooth on a part of the circumference and a screw on a part of the circumference on the opposite side. Similarly, a gear (27) is also attached to adjacent support rollers constituting a set, and a gear train is formed by sandwiching a small gear (29), and a plurality of worms for the support rollers are sequentially connected by a shaft (31). 5. The outer surface processing apparatus for a raw material round bamboo according to claim 3 , wherein all of the support rollers are simultaneously rotated at the same angle by rotating in the same manner. The turning means of the support roller (61) pins the lever (67) fitted to the tip of the support shaft (65) and the links (70, 71) so as to be slidable, and turns the small lever (72). 5. The apparatus for processing the outer surface of the raw round bamboo for raw materials according to claim 3 or 4, wherein all the support rollers are simultaneously turned at the same angle.   The support roller (11, 61) has an outer diameter in the range of 140 to 160 mm, and the distance between the axes of the pair of support rollers (11, 61) is in the range of the outer diameter + 5 to 15 mm. The outer surface processing apparatus of the raw bamboo for raw materials in any one of 2-6. The outer surface processing apparatus for raw bamboo for raw materials according to any one of claims 3 to 7, wherein a turning angle of the support roller (11, 61) is in a range of 5 to 8 degrees.   An endless flat belt-shaped cutting band (44) configured between the pulley (42) and the pulley (43), which is configured in the machining head (6), is attached to the longitudinal axis of the raw round bamboo (1). The apparatus for processing the outer surface of the raw round bamboo for raw materials according to claim 2, characterized in that it is placed so as to be in contact with a right angle, the contact surface corresponds to the tension side of the cutting band (44), and the moving direction is downward. A buffering spring (49) for swinging the processing head frame (45) back and forth with respect to the contact surface of the raw material round bamboo (1) inside the processing head frame (45) containing the cutting band (44). The apparatus for processing the outer surface of a round bamboo for raw material according to claim 2 or 9, characterized in that is incorporated. The cutting band (44) is configured in a range of 140 to 160 mm in width, in a range of 40 to 60 mesh of abrasive grains, and used in a range of peripheral speed of 20 to 30 m / min . The outer surface processing apparatus of the round bamboo for raw materials of 10.

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