JP6059852B1 - Bamboo fiber manufacturing equipment - Google Patents

Abstract

The bamboo fiber manufacturing apparatus 1 includes a rotating roller 20 that rotates a bamboo trunk 101 around an axis, a rotary blade 10 that cuts an outer peripheral surface of the trunk rotated by the rotating roller 20, and a rotating trunk. A moving carriage 40 that reciprocates relative to the rotary blade 10 in the axial direction of the trunk 101 and an inner end of the trunk 101 that reciprocates while being rotated by the rotating roller 20 and the moving carriage 40. A pair of abutting portions 31 and 31 are provided that regulate the amount of displacement in the direction intersecting the axial direction of the trunk material 101 by abutting each of the peripheral edges.

Description

  The present invention relates to a bamboo fiber manufacturing apparatus for manufacturing bamboo fiber by cutting an outer peripheral surface of a bamboo trunk.

  Patent Document 1 discloses a bamboo fiber reinforcing material manufacturing apparatus that manufactures bamboo fiber by cutting the outer peripheral surface of bamboo, which is a workpiece, with a rotary blade. This bamboo fiber reinforced material manufacturing apparatus is provided with a guide portion at a position shifted at a predetermined distance in the left-right symmetrical position of the rotary shaft portion of the rotary blade and shifted downward by a predetermined dimension, and the outer periphery of the bamboo rotating around the axis The surface is applied to the guide part and scraped off while pressing.

JP 2010-137361 A

  By the way, in general, a bamboo trunk does not extend straight, and its cross-sectional shape is not a perfect circle. Furthermore, bamboo has a tapered shape whose diameter decreases toward the tip. Therefore, even if the outer peripheral surface of the bamboo is pressed against the guide portion as in the conventional bamboo fiber reinforcing material manufacturing apparatus described above, the bamboo easily deviates from the guide portion, and cutting cannot be continued. In order to prevent the bamboo from deviating from the guide portion in this way, if the bamboo is pressed strongly and cut, the bamboo may be cracked.

  In order to increase the cutting efficiency, it is desirable to continuously cut the outer peripheral surface of the bamboo by reciprocating the bamboo in the axial direction with respect to the rotary blade. The problem of deviating from the guide becomes even more apparent.

  The present invention has been made in view of such circumstances, and a main object of the present invention is a bamboo fiber capable of stably cutting the outer peripheral surface of a bamboo trunk that reciprocates in the axial direction while rotating around the axis. It is to provide a manufacturing apparatus.

  In order to solve the above-described problem, a bamboo fiber manufacturing apparatus according to an aspect of the present invention includes a rotating unit that rotates a bamboo trunk around an axis, and an outer peripheral surface of the trunk that is rotated by the rotating unit. The cutting portion to be cut, the reciprocating movement portion for reciprocating the rotating stem material relative to the cutting portion in the axial direction of the stem material, and the rotating portion and the reciprocating movement portion rotate. A pair of abutting portions that regulate the amount of displacement in the direction intersecting the axial direction of the trunk material by abutting on the inner peripheral edges of both ends of the trunk material reciprocating while being reciprocated.

  In this aspect, the contact portion may be configured to be displaceable by following a predetermined amount of displacement in a direction intersecting the axial direction of the trunk material.

In the above aspect, the abutting portion is configured by a rod-shaped portion that is inserted into a cavity at an end portion of the trunk material and is provided so as to be able to swing by the predetermined amount in the intersecting direction, and the outer surface of the rod-shaped portion May contact the inner peripheral edges of both ends of the trunk.

  The said aspect WHEREIN: You may further provide the support part which supports the said rod-shaped part loosely and swingably.

  The said aspect WHEREIN: The said rod-shaped part may comprise the column shape.

  In the above aspect, the pair of contact portions may be configured such that a distance between them can be adjusted.

  According to the present invention, it is possible to stably cut the outer peripheral surface of a bamboo trunk that reciprocates in the axial direction while rotating around the axis.

The front view which shows the structure of the bamboo fiber manufacturing apparatus which concerns on embodiment. The side view which shows the structure of the bamboo fiber manufacturing apparatus which concerns on embodiment. The perspective view which shows the structure of a support part. Sectional drawing for demonstrating the state by which the trunk material of bamboo is supported by a pair of support part.

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

  FIG. 1 is a front view showing a configuration of a bamboo fiber manufacturing apparatus according to the present embodiment. FIG. 2 is a side view showing the configuration. In the following description, the top, bottom, left, and right in FIG. 1 are defined as the top, bottom, left, and right, and the front side (left side in FIG. 2) in FIG.

  As shown in FIG. 1, the bamboo fiber manufacturing apparatus 1 includes a rotary blade 10 that cuts the outer peripheral surface of a bamboo trunk 101 cut to an appropriate length, and a rotary roller 20 that rotates the trunk 101 around an axis. A support portion 30 that supports both ends of the trunk 101, a movable carriage 40 on which the rotating roller 20 and the support portion 30 are placed, and a support frame 50 that supports each of the above-described mechanisms.

  The support frame 50 includes a lower frame 51 and an upper frame 52 provided on the lower frame 51. The lower frame 51 includes a rectangular substrate 51a and four leg portions 51b provided on the bottom surface of the substrate 51a. The upper frame 52 includes two support columns 52a and 52a projecting upward from the lower frame 51, an upper connecting plate 52b for connecting the upper ends of the two support columns 52a and 52a in the horizontal direction, and a midway thereof. A lower connecting plate 52c that connects the parts in the horizontal direction, and two rails 52d and 52d extending between the upper connecting plate 52b and the lower connecting plate 52c and extending in the vertical direction are provided.

  The rotary blade 10 includes a plurality of thin disc-shaped cutting blades 10a provided side by side in the axial direction. On the outer periphery of each cutting blade 10a, a plurality of cutting claws 10b are provided at a predetermined pitch. The rotary blade 10 is connected to an electric motor 11 via a timing belt 13 and is rotated around its central axis by the electric motor 11. Thereby, the outer peripheral surface of the trunk material 101 is cut by the cutting claws 10b of the cutting blades 10a.

  The rotary blade 10 and the electric motor 11 are supported by a guide plate 12. An opening having a predetermined shape is provided on the front side of the guide plate 12. The rotary blade 10 penetrates the opening and is supported by the guide plate 12, and a part of the rotary blade 10 projects below the guide plate 12. This protrusion amount can be adjusted, and is determined according to a desired cutting depth of the outer peripheral surface of the bamboo trunk 101.

  The guide plate 12 is formed with two through-holes spaced slightly in the left-right direction slightly behind the opening. Two rails 52d and 52d of the upper frame 52 are fitted into these two through holes, respectively. The guide plate 12 can be moved up and down between the upper connecting plate 52b and the lower connecting plate 52c by sliding on the rails 52d and 52d. As the guide plate 12 moves, the rotary blade 10 is also displaced in the vertical direction. Thereby, the position of the rotary blade 10 in the vertical direction is adjusted.

  The pressing force of the rotary blade 10 applied to the outer peripheral surface of the trunk material 101 is adjusted by the position of the rotary blade 10 in the vertical direction. This adjustment is performed by the cutting pressure adjusting unit 60. The cutting pressure adjusting unit 60 includes a pantograph-type screw jack 61, an operation handle 62 for operating the screw jack 61, pulleys 63 and 64 provided in the front-rear direction, and these pulleys 63. , 64 is provided with a rope 65 spanned. The screw-type jack 61 and the pulleys 63 and 64 are attached on the upper connecting plate 52b.

  The screw type jack 61 is connected to the guide plate 12. The screw-type jack 61 expands and contracts by the operation of the operation handle 62, and accordingly, the guide plate 12 is displaced in the vertical direction.

  One end of the rope 65 is fixed to the guide plate 12, and the other end is connected to a counter weight portion 66 provided on the support column 52a. Thus, the guide plate 12 is supported by being suspended by the rope 65 via the pulleys 63 and 64 by being balanced by the counterweight portion 66.

  The position of the rotary blade 10 is determined by displacing the guide plate 12 to an appropriate position in the vertical direction by the screw type jack 61. At this time, the position of the rotary blade 10 in the vertical direction is such that the cutting edge of the rotary blade 10 comes into contact with the outer peripheral surface when cutting the portion of the bamboo trunk material 101 that is the workpiece to have the minimum outer diameter. Is adjusted. In this case, when the portion having a larger outer diameter than the portion having the minimum outer diameter comes into contact with the cutting edge of the rotary blade 10 due to the relative movement of the trunk material 101 with respect to the rotary blade 10, the rotary blade 10 is lifted upward. Will be. Thereafter, similarly, when a portion having an outer diameter smaller than that portion contacts the cutting edge of the rotary blade 10, the rotary blade 10 moves downward. In this way, when the position of the rotary blade 10 in the vertical direction is displaced, the applied pressure of the rotary blade 10 applied to the outer peripheral surface of the trunk material 101 is adjusted. Thereby, it becomes possible to cut stably the outer peripheral surface of the site | part of various outer diameters in the trunk material 101. FIG.

  Below the rotary blade 10, two pairs of rotary rollers 20 and 20 that are spaced apart in the front-rear direction are arranged side by side in the left-right direction. Each rotating roller 20 includes a plurality of elongated plate-like bodies 20a, 20a,... And two annular belt-like bodies 20b, 20b. The bottom surfaces of both end portions of each plate-like body 20a arranged at a predetermined pitch are connected to the outer peripheral surfaces of the annular belt-like bodies 20b and 20b. Thereby, the plate-like bodies 20a, 20a,... Are connected to each other.

  The pair of rotating rollers 20 and 20 are provided such that the distance between them in the front-rear direction can be adjusted. When the outer diameter of the bamboo trunk 101 is large, the interval is set wide, and when it is small, the interval is set narrow. Thereby, the height of the outer peripheral surface of the trunk material 101 can be made substantially constant, and stable cutting can be realized. In many cases, the trunk material 101 has a tapered shape in which the diameter decreases toward the front. In that case, the interval between the pair of rotating rollers 20 and 20 positioned on the front side is narrowed, and the interval between the pair of rotating rollers 20 and 20 positioned on the rear side is increased. Thereby, even if the trunk 101 has a tapered shape, the height of the outer peripheral surface thereof can be made substantially constant.

  The two rotating rollers 20, 20 arranged in the front-rear direction share a rotating shaft 21 and rotate around the rotating shaft 21. This rotation is performed by the electric motor 22. Specifically, the rotating motion of the electric motor 22 is transmitted to the rotating shaft 21 via the timing belt 23 and the pulley, whereby each rotating roller 20 rotates. Along with this, the bamboo trunk 101 placed on the rotating roller 20 also rotates.

  Between the pair of rotating rollers 20 and 20 described above, a support portion 30 is provided for supporting both ends of the bamboo trunk material 101 placed on the rotating rollers 20 and 20. Details of the support 30 will be described later.

  The movable carriage 40 includes a mounting table 40a, and the support unit 30 is disposed on the mounting table 40a. Further, the movable carriage 40 is connected to each rotating roller 20 and the electric motor 22. Therefore, with the movement of the movable carriage 40, the support portion 30, the rotating roller 20, and the electric motor 22 also move.

  The movable carriage 40 reciprocates linearly in the left-right direction using a so-called rack and pinion mechanism. Specifically, the configuration is as follows.

  On the front side surface of the movable carriage 40, a linear rack 40b in which a plurality of teeth are continuously formed along the left-right direction is provided. On the other hand, an electric motor 70 is fixedly attached to the front side surface of the substrate 51 a of the lower frame 51. The electric motor 70 rotates the pinion 71 that meshes with the teeth formed on the rack 40b.

  On the board 51a, two rails 72, 72 are provided so as to extend in parallel with the rack 40b. These rails 72, 72 are slidably fitted to a slider (not shown) attached to the movable carriage 40, and support the load of the movable carriage 40 via this slider.

  When the pinion 71 is rotated by the electric motor 70, the movable carriage 40 is linearly moved in the left-right direction while being guided by the rails 72, 72. When the electric motor 70 rotates forward and backward at predetermined time intervals, the movable carriage 40 can linearly reciprocate in the left-right direction. As a result, the trunk material 101 and the support portion 30 placed on the rotating roller 20 are also linearly reciprocated.

  Next, the detail of the support part 30 is demonstrated. The support portion 30 is configured by a pair of contact portions 31 and 31 that are spaced apart in the left-right direction. FIG. 3 is a perspective view showing the configuration of the contact portion 31. As shown in FIG. 3, the contact portion 31 includes a cylindrical contact rod 311 and a rod support portion 312 that supports the contact rod 311. As will be described later, the support member 30 supports the trunk material 101 by bringing the inner peripheral edges of both ends of the bamboo trunk material 101 into contact with the outer peripheral surface of the contact bar 311.

  The rod support portion 312 is a bottomed cylindrical body that opens upward and has a cylindrical hollow portion, and the diameter of the hollow portion is slightly larger than the outer diameter of the contact rod 311. The lower half of the contact bar 311 is loosely fitted in the hollow part of the bar support 312.

  The rod support portion 312 is inclined and fixed on the movable pedestal 313 at a predetermined angle from the vertical direction. The movable pedestal 313 is slidably provided in a guide hole 315 formed in the long plate-like base 314 along the longitudinal direction thereof. The base 314 is attached to the mounting table 40a of the movable carriage 40 so that the longitudinal direction thereof is in the left-right direction. Thereby, since the movable base 313 can be displaced in the left-right direction with respect to the base 314, the bar support portion 312 can be similarly displaced accordingly. The movable pedestal 313 is fixed to the base 314 by a locking tool 316 after the position in the left-right direction is adjusted by sliding on the base 314.

  As shown in FIG. 1, the rod support portion 312 of the contact portion 31 located on the left side is inclined upward on the right side, and the rod support portion 312 of the contact portion 31 located on the right side is inclined upward on the left side. As described above, each movable base 313 is provided on each base 314. The respective contact rods 311 are loosely fitted in the hollow portions of the respective bar support portions 312 thus provided, so that the contact rods 311 and 311 are inclined so as to face each other.

  As described above, since the diameter of the hollow portion of the rod support portion 312 is larger than the outer diameter of the contact rod 311, when a force is applied to the upper half of the contact rod 311 from the lower side or the like, Following this, the connecting rod 311 swings in the opposite direction. This swing range is determined by the difference between the outer diameter of the contact bar 311 and the diameter of the cylindrical hollow portion of the bar support portion 312. When this difference is large, the contact bar 311 swings greatly, and when it is small, the swing is also small. As will be described later, the amount of displacement in the direction intersecting the axial direction of the bamboo trunk 101 is limited by the swing range of the contact bar 311.

  FIG. 4 is a cross-sectional view for explaining a state in which the bamboo trunk 101 is supported by the pair of contact portions 31. When cutting the trunk material 101, the user sufficiently widens the distance between the contact rods 311 and 311 by sliding the movable base 313 of each contact portion 31 on the base 314, The trunk material 101 is placed on the rotating roller 20. Thereafter, the user similarly slides the movable pedestal 313 with respect to the base 314 so that each contact portion 3 is inserted into the cavity at the end of the trunk member 101 as shown in FIG. Thus, the inner peripheral edges 102 at both ends of the trunk material 101 are in contact with the outer peripheral surface of the upper half of the contact bar 311 provided in each contact portion 3. For convenience of explanation, the rotating roller 20 is not shown in FIG.

  The contact portion 3 is not moved until the contact rod 311 contacts the inner peripheral edge 102, and a slight gap is provided between the outer peripheral surface of the upper half portion of the contact rod 311 and the inner peripheral edge 102. Also good. Even in this case, as the trunk material 101 rotates around the axis and reciprocates in the axial direction, a state in which the inner peripheral edge 102 abuts on the outer peripheral surface of the upper half portion of the abutting bar 311 can occur.

  Next, the user adjusts the position of the rotary blade 10 in the vertical direction, and then operates each electric motor 11, 22, 70 to start the operation of the bamboo fiber manufacturing apparatus 1. As the electric motor 11 rotates, the cutting blade 10a of the rotary blade 10 rotates. In addition, the two pairs of rotating rollers 20 and 20 are rotated by the rotational drive of the electric motor 22, and the trunk material 101 placed thereon is also rotated around the axis. Further, the movable carriage 40 linearly reciprocates in the left-right direction (axial direction of the trunk material 101) while being guided by the rails 72, 72. Thus, the rotary blade 10 cuts the outer peripheral surface of the trunk material 101 in a state where the trunk material 101 reciprocates in the axial direction while rotating around the axis. As a result, bamboo fiber is continuously produced.

  Usually, the bamboo trunk 101 is bent, and its cross section is not a perfect circle, and has a tapered shape that becomes narrower toward the front. Therefore, when the trunk material 101 reciprocates in the axial direction while rotating around the axis as described above, the trunk material 101 tends to be displaced in a direction intersecting the axial direction. Here, since the lower portion of the trunk material 101 is placed on the rotating roller 20, the trunk material 101 is not displaced downward in the case of the present embodiment. Therefore, in the case of the present embodiment, the trunk material 101 is displaced in the upward direction and the left-right direction. In this case, the contact bar 311 that is in contact with the inner peripheral edge 102 at the end of the trunk 101 is pushed by the inner peripheral edge 102 and swings in the direction opposite to the pressed direction. At this time, the contact bar 311 swings until the outer peripheral surface of the contact bar 311 reaches the inner peripheral edge of the bar support portion 312 and does not swing further in the opposite direction after reaching. Thus, the contact bar 311 is displaced by following a predetermined amount of displacement in the direction intersecting the axial direction of the trunk material 101, and is not displaced in that direction any more. As a result, the amount of displacement of the trunk material 101 in the intersecting direction is limited to a predetermined amount, and it is possible to avoid the occurrence of such a situation that the trunk material 101 is greatly displaced and deviates from the rotating roller 20. It becomes possible.

  As described above, the amount of displacement in the direction intersecting the axial direction of the trunk material 101 is not zero, and can be displaced by a predetermined amount. Therefore, for example, even when a sudden force is applied to the trunk material 101 due to a change in the force received from the cutting blade 10a of the rotary blade 10, the trunk material 101 is displaced by a predetermined amount. A sudden force applied to the core material 101 is released, and cracking of the trunk material 101 is prevented.

  The appropriate range of swinging by the contact bar 311 varies depending on the shape of the bamboo trunk 101 and the inclination angle of the contact bar 311, but the displacement in the direction intersecting the axial direction of the trunk 101 is 20 mm. It is preferable to define it to be within. With this amount of displacement, the cutting operation can be continued stably without causing the trunk 101 to deviate from the rotating roller 20.

  In addition, since each contact part 31 supports the inner periphery of the both ends of the trunk material 101 like this Embodiment, the trunk material 101 will be clamped in the left-right direction, ie, an axial direction. It is possible to prevent a large displacement in the axial direction. Even when the trunk 101 is slightly displaced in the axial direction, the amount of displacement is limited by the swinging of the contact bar 311, so that a stable cutting operation can be realized.

  Further, by making it possible to adjust the distance between the pair of contact portions 31, 31 as in the present embodiment, not only can the trunk material 101 of various lengths be cut, but also the trunk. The amount of displacement of the material 101 can be adjusted. For example, before starting the operation of the bamboo fiber manufacturing apparatus 1, by adjusting the distance between the contact portions 31, 31, the contact at the both contact portions 31, 31 is made to the inner peripheral edge 102 at both ends of the trunk material 101. Various initial states such as a state in which both rods 311 and 311 are in contact, a state in which only one of them is in contact, or a state in which both are not in contact but a distance to the inner peripheral edge 102 is provided. Can be set. The displacement amount of the trunk material 101 differs depending on each of these states. The initial state can be appropriately set by adjusting the distance between the pair of contact portions 31 and 31 according to the allowable displacement amount of the trunk material 101 and the like.

(Other embodiments)
In the above embodiment, the contact rod 311 of the contact portion 31 is configured to be swingable and is displaced by a predetermined amount following the displacement of the trunk material 101. However, the contact rod 311 is rocked. You may be comprised so that it cannot move. Even in this case, by adjusting the distance between the pair of contact rods 311, 311, it is possible to limit the amount of displacement of the trunk material 101 in the axial direction and the direction intersecting the axial direction to a predetermined amount. Become. Depending on the shape of the trunk 101, even if the trunk 101 is supported using the support portion 31 so that the amount of displacement in the axial direction and the direction crossing the axial direction is substantially zero, the rotating roller 20 Deviation from the above and cracking of the trunk material 101 may not occur. In such a case, even if the contact rod 311 configured so as not to swing is used, no particular problem occurs.

  In the above-described embodiment, the member that contacts the inner peripheral edge 102 of the end portion of the bamboo trunk 101 is a rod shape, but is not limited to this shape, and can contact the inner peripheral edge 102. Any other shape may be used.

  In the above embodiment, the contact bar 311 has a columnar shape, but other shapes may be employed, for example, a prismatic shape. However, in order to realize swinging in various directions, it is preferable that the contact bar 311 has a cylindrical shape.

  In the above embodiment, the bamboo trunk 101 is reciprocated in the left-right direction with respect to the rotary blade 10, but the rotary blade 10 is reciprocated in the left-right direction with respect to the trunk 101. It doesn't matter if you do.

  The bamboo fiber manufacturing apparatus of the present invention is useful as a bamboo fiber manufacturing apparatus for manufacturing bamboo fiber by cutting the outer peripheral surface of a bamboo trunk.

DESCRIPTION OF SYMBOLS 1 Bamboo fiber manufacturing apparatus 10 Rotating blade 10a Cutting blade 10b Cutting claw 11 Electric motor 12 Guide plate 13 Timing belt 20 Rotating roller 20a Plate body 20b Ring-shaped body 21 Rotating shaft 22 Electric motor 23 Timing belt 30 Support part 31 Contact 311 Contact bar 312 Rod support 313 Movable base 314 Base 315 Guide hole 316 Locking tool 40 Moving carriage 40a Mounting table 40b Rack 50 Support frame 51 Lower frame 51a Substrate 51b Leg 52 Upper frame 52a Post 52b Upper connecting plate 52c Lower connecting plate 52d Rail 60 Cutting pressure adjusting part 61 Screw jack 62 Operation handle 63, 64 Pulley 65 Rope 66 Counterweight part 70 Electric motor 71 Pinion 72 Rail 101 Trunk material 102 Inner edge

Claims (6)

A rotating part that rotates the trunk of the bamboo around its axis;
A cutting portion for cutting the outer peripheral surface of the trunk material rotated by the rotating portion;
A reciprocating movement part for reciprocating the rotating trunk material relative to the cutting part in the axial direction of the trunk material;
A pair that regulates the amount of displacement in the direction intersecting the axial direction of the trunk material by abutting the inner peripheral edges of both ends of the trunk material that is reciprocating while rotating by the rotating portion and the reciprocating movement portion. A bamboo fiber manufacturing apparatus comprising: The contact portion is configured to be displaceable by following a predetermined amount of displacement in a direction intersecting the axial direction of the trunk material .
The bamboo fiber manufacturing apparatus according to claim 1 . The contact portion is inserted into a cavity at an end portion of the trunk material, and is configured by a rod-shaped portion provided so as to be swingable by the predetermined amount in the intersecting direction.
The outer surface of the rod-shaped part abuts against the inner peripheral edges of both ends of the trunk material,
The bamboo fiber manufacturing apparatus according to claim 2. A support portion for loosely supporting the rod-like portion and swingably supporting the rod-like portion;
The bamboo fiber manufacturing apparatus according to claim 3. The rod-shaped part has a cylindrical shape,
The bamboo fiber manufacturing apparatus according to claim 2 or 3. The pair of contact portions are configured such that the distance between them can be adjusted.
The bamboo fiber manufacturing apparatus according to any one of claims 1 to 5.

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